/* roulang page: index */
:root{
  --primary:#00E08A;
  --accent:#FF6A2B;
  --volt:#7B61FF;
  --lime:#C9F227;
  --cyan:#22D3EE;
  --bg:#0A0E13;
  --panel:#111823;
  --surface:#151E29;
  --field:#0F1620;
  --edge:#1E2A36;
  --edge-soft:rgba(255,255,255,.08);
  --text:#E9F1F6;
  --text-2:#9AAAB8;
  --text-3:#64748B;
  --r-card:14px;
  --r-btn:10px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.05), 0 20px 44px -28px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(0,224,138,.35), 0 0 26px -8px rgba(0,224,138,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
::selection{background:rgba(0,224,138,.3);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A0E13}
::-webkit-scrollbar-thumb{background:#1E2A36;border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:#2b3b4c}

.wrap{max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;width:100%}
@media(min-width:768px){.wrap{padding-left:32px;padding-right:32px}}
.section{padding-top:64px;padding-bottom:64px}
@media(min-width:768px){.section{padding-top:96px;padding-bottom:96px}}
.tnum{font-variant-numeric:tabular-nums;letter-spacing:.03em}

/* 网格纹理与斜切光带 */
.grid-texture{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 30% 20%,#000 10%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 30% 20%,#000 10%,transparent 72%);
  opacity:.6;
}
.slash-band{position:absolute;top:-10%;left:38%;width:220px;height:130%;pointer-events:none;
  background:linear-gradient(180deg,rgba(0,224,138,.14),rgba(0,224,138,0));
  transform:rotate(18deg);filter:blur(2px);opacity:.55;
}
@media(max-width:768px){.slash-band{display:none}}

/* 顶部导航 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;height:64px;
  background:rgba(10,14,19,.85);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:box-shadow .2s ease-out,background-color .2s ease-out;}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.85),rgba(0,224,138,.15) 45%,rgba(0,224,138,0) 100%);}
.site-header.is-scrolled{background:rgba(10,14,19,.94);box-shadow:0 14px 34px -26px rgba(0,0,0,1)}

.nav-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}
@media(min-width:768px){.site-header,.nav-inner{height:72px}}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:9px;
  background:linear-gradient(150deg,rgba(0,224,138,.22),rgba(0,224,138,.04));
  border:1px solid rgba(0,224,138,.45);color:var(--primary);
  box-shadow:0 0 18px -8px rgba(0,224,138,.7);}
.brand-mark svg{width:18px;height:18px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.02em;color:var(--text)}
.brand-sub{font-size:10px;letter-spacing:.22em;color:var(--text-3);text-transform:uppercase}
.brand:hover .brand-name{color:var(--primary)}

.nav-links{display:none;align-items:center;gap:26px}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 2px;transition:color .18s var(--ease);min-height:44px;display:inline-flex;align-items:center}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);text-shadow:0 0 14px rgba(0,224,138,.55)}
.nav-link.active::after{transform:scaleX(1)}

.nav-right{display:flex;align-items:center;gap:12px}
.burger{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--edge);border-radius:10px;color:var(--text-2);transition:border-color .18s,color .18s}
.burger:hover{border-color:rgba(0,224,138,.55);color:var(--primary)}
@media(min-width:1024px){.burger{display:none}}

.drawer{position:fixed;inset:0;z-index:90;background:rgba(10,14,19,.98);
  transform:translateY(-102%);transition:transform .26s var(--ease);
  padding:84px 20px 40px;overflow-y:auto;}
.drawer.open{transform:translateY(0)}
.drawer-close{position:absolute;top:16px;right:20px;width:44px;height:44px;border:1px solid var(--edge);border-radius:10px;color:var(--text-2);display:grid;place-items:center}
.drawer-close:hover{color:var(--primary);border-color:rgba(0,224,138,.5)}
.drawer-brand{font-size:16px;font-weight:800;color:var(--primary);letter-spacing:.06em;margin-bottom:22px}
.drawer a{display:block;font-size:18px;padding:15px 4px;color:var(--text-2);border-bottom:1px solid rgba(255,255,255,.07);transition:color .18s,padding-left .18s}
.drawer a:hover{color:var(--text)}
.drawer a.active{color:var(--primary);padding-left:14px;border-left:3px solid var(--primary);background:rgba(0,224,138,.07);box-shadow:inset 14px 0 24px -22px rgba(0,224,138,.9)}
.drawer-cta{margin-top:26px;display:inline-flex;width:100%;justify-content:center}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  border-radius:var(--r-btn);padding:12px 24px;font-size:15px;font-weight:600;
  min-height:44px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);}
.btn svg{width:16px;height:16px;flex:0 0 auto}
.btn-primary{background:var(--primary);color:#06121A}
.btn-primary:hover{background:#2CEF9E;transform:translateY(-1px);box-shadow:var(--glow)}
.btn-outline{border-color:rgba(0,224,138,.6);color:var(--primary);background:transparent}
.btn-outline:hover{background:rgba(0,224,138,.1);transform:translateY(-1px);box-shadow:0 0 22px -12px rgba(0,224,138,.9)}
.btn-ghost{color:var(--text-2);padding:12px 8px}
.btn-ghost svg{transition:transform .18s var(--ease)}
.btn-ghost:hover{color:var(--primary)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn:active{transform:translateY(0) scale(.988)}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* chip */
.chip{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;
  padding:6px 13px;border-radius:999px;border:1px solid rgba(0,224,138,.35);
  background:rgba(0,224,138,.08);color:var(--primary);
  transition:background-color .18s var(--ease),color .18s var(--ease);}
.chip::before{content:"";width:2px;height:12px;border-radius:2px;background:currentColor;flex:0 0 auto}
.chip:hover{background:var(--primary);color:#06121A}
.chip-plain{border-color:var(--edge);background:transparent;color:var(--text-3)}
.chip-plain::before{display:none}
.chip-plain:hover{background:rgba(255,255,255,.05);color:var(--text-2)}
.chip-accent{border-color:rgba(255,106,43,.45);background:rgba(255,106,43,.1);color:var(--accent)}
.chip-volt{border-color:rgba(123,97,255,.45);background:rgba(123,97,255,.1);color:var(--volt)}
.chip-cyan{border-color:rgba(34,211,238,.42);background:rgba(34,211,238,.1);color:var(--cyan)}
.chip-lime{border-color:rgba(201,242,39,.42);background:rgba(201,242,39,.1);color:var(--lime)}

/* Hero */
.hero{position:relative;padding-top:104px;padding-bottom:48px;overflow:hidden}
@media(min-width:768px){.hero{padding-top:132px;padding-bottom:72px}}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;z-index:0}
.hero-mask{position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(10,14,19,.97) 0%,rgba(10,14,19,.9) 34%,rgba(10,14,19,.5) 68%,rgba(10,14,19,.22) 100%),
             linear-gradient(180deg,rgba(10,14,19,.72) 0%,rgba(10,14,19,.1) 40%,rgba(10,14,19,.96) 100%);}
.hero-inner{position:relative;z-index:3}
.hero-title{font-size:clamp(28px,4.2vw,52px);font-weight:800;line-height:1.15;letter-spacing:-.01em;max-width:20em}
.hero-title .accent{color:var(--primary)}
.hero-sub{margin-top:18px;font-size:16px;line-height:1.9;color:var(--text-2);max-width:42em}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.metric-bar{margin-top:44px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  border-top:1px solid var(--edge);border-bottom:1px solid var(--edge);
  background:rgba(17,24,35,.55);backdrop-filter:blur(4px);border-radius:0}
@media(min-width:768px){.metric-bar{grid-template-columns:repeat(4,minmax(0,1fr))}}
.metric{padding:18px 20px;border-right:1px solid var(--edge)}
.metric:last-child{border-right:0}
@media(max-width:767px){.metric:nth-child(2n){border-right:0}.metric:nth-child(n+3){border-top:1px solid var(--edge)}}
.metric-num{font-size:26px;font-weight:800;color:var(--primary);line-height:1.2}
.metric-label{margin-top:6px;font-size:12px;letter-spacing:.08em;color:var(--text-3)}

/* 板块头 */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.sec-title{position:relative;padding-left:16px;font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.005em}
.sec-title::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(0,224,138,.15));box-shadow:0 0 18px -4px rgba(0,224,138,.8)}
.sec-desc{margin-top:12px;color:var(--text-2);font-size:15px;max-width:44em}
.link-more{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:14px;font-weight:600;min-height:44px}
.link-more svg{width:16px;height:16px;transition:transform .18s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}

/* 目录行卡 */
.cat-list{display:flex;flex-direction:column;gap:14px}
.cat-row{position:relative;display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center;
  padding:20px 22px;border:1px solid var(--edge);border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(21,30,41,.92),rgba(17,24,35,.92));
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);}
.cat-row::before{content:"";position:absolute;left:-1px;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transition:opacity .18s var(--ease);box-shadow:0 0 16px rgba(0,224,138,.7)}
.cat-row:hover{transform:translateY(-2px);border-color:rgba(0,224,138,.45);background:var(--surface)}
.cat-row:hover::before{opacity:1}
.cat-num{font-size:24px;font-weight:800;color:var(--text-3);transition:color .18s var(--ease),text-shadow .18s var(--ease)}
@media(min-width:768px){.cat-num{font-size:30px}}
.cat-row:hover .cat-num{color:var(--primary);text-shadow:0 0 18px rgba(0,224,138,.7)}
.cat-name{font-size:18px;font-weight:700;color:var(--text)}
@media(min-width:768px){.cat-name{font-size:20px}}
.cat-note{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.75;max-width:52em}
.cat-meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:12px;color:var(--text-3);letter-spacing:.05em}
.cat-arrow{display:none}
@media(min-width:768px){
  .cat-row{grid-template-columns:auto 1fr auto}
  .cat-arrow{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;
    border:1px solid var(--edge);color:var(--text-3);transition:all .18s var(--ease)}
  .cat-row:hover .cat-arrow{border-color:var(--primary);color:var(--primary);box-shadow:var(--glow)}
}
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.filter-btn{font-size:13px;padding:8px 16px;border-radius:999px;border:1px solid var(--edge);
  color:var(--text-2);min-height:40px;transition:all .18s var(--ease)}
.filter-btn:hover{color:var(--primary);border-color:rgba(0,224,138,.5)}
.filter-btn.is-active{background:rgba(0,224,138,.12);border-color:rgba(0,224,138,.55);color:var(--primary);box-shadow:0 0 18px -10px rgba(0,224,138,.9)}

/* 精选大卡 */
.feature-card{position:relative;display:block;border:1px solid var(--edge);border-radius:var(--r-card);
  overflow:hidden;background:var(--surface);box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease),border-color .18s var(--ease)}
.feature-card:hover{transform:translateY(-2px);border-color:rgba(0,224,138,.5)}
.feature-media{position:relative;aspect-ratio:21/9;overflow:hidden;background:var(--panel)}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.feature-card:hover .feature-media img{transform:scale(1.03)}
.feature-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,14,19,0) 40%,rgba(10,14,19,.85) 100%)}
.feature-body{padding:22px}
.feature-title{font-size:22px;font-weight:700;line-height:1.45}
@media(min-width:768px){.feature-title{font-size:26px}}
.feature-text{margin-top:12px;color:var(--text-2);font-size:15px;line-height:1.85}
.card-foot{margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--text-3);letter-spacing:.04em}

/* 精选小行卡 */
.mini-row{display:grid;grid-template-columns:88px 1fr;gap:16px;align-items:center;padding:14px;
  border:1px solid var(--edge);border-radius:var(--r-card);background:var(--panel);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
.mini-row:hover{transform:translateY(-2px);border-color:rgba(0,224,138,.45);background:var(--surface)}
.mini-thumb{aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:var(--surface);border:1px solid var(--edge)}
.mini-thumb img{width:100%;height:100%;object-fit:cover}
.mini-title{font-size:16px;font-weight:600;line-height:1.5;transition:color .18s var(--ease)}
.mini-row:hover .mini-title{color:var(--primary)}
.mini-meta{margin-top:8px;font-size:12px;color:var(--text-3);letter-spacing:.05em;display:flex;gap:10px;flex-wrap:wrap}

/* 资讯列表行卡 */
.news-list{display:flex;flex-direction:column;gap:14px}
.news-row{display:grid;grid-template-columns:1fr;gap:16px;padding:16px;
  border:1px solid var(--edge);border-radius:var(--r-card);background:var(--panel);
  box-shadow:var(--shadow-card);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
@media(min-width:640px){.news-row{grid-template-columns:150px 1fr;gap:20px;padding:18px}}
.news-row:hover{transform:translateY(-2px);border-color:rgba(0,224,138,.45);background:var(--surface)}
.news-thumb{aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:#111823;border:1px solid var(--edge)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.thumb-ph{aspect-ratio:4/3;border-radius:12px;background:var(--panel);
  border:1px dashed rgba(0,224,138,.35);display:grid;place-items:center;color:var(--primary)}
.thumb-ph svg{width:26px;height:26px;opacity:.75}
.news-title{font-size:17px;font-weight:600;line-height:1.55;transition:color .18s var(--ease)}
.news-row:hover .news-title{color:var(--primary)}
.news-excerpt{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:12px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12px;color:var(--text-3);letter-spacing:.05em}
.empty-state{border:1px dashed var(--edge);border-radius:var(--r-card);background:var(--panel);
  padding:44px 24px;text-align:center;color:var(--text-2)}
.empty-state svg{width:34px;height:34px;color:var(--primary);margin:0 auto 14px;opacity:.85}

/* 推荐小卡 */
.reco-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:640px){.reco-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.reco-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.reco-card{display:block;padding:16px;border:1px solid var(--edge);border-radius:var(--r-card);
  background:var(--panel);min-height:112px;transition:transform .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
.reco-card:hover{transform:translateY(-2px);border-color:rgba(0,224,138,.45);background:var(--surface)}
.reco-title{font-size:15px;font-weight:600;line-height:1.6;transition:color .18s var(--ease)}
.reco-card:hover .reco-title{color:var(--primary)}
.reco-meta{margin-top:12px;display:flex;justify-content:space-between;gap:10px;font-size:12px;color:var(--text-3);letter-spacing:.05em}

/* CTA 面板 */
.cta-panel{position:relative;border:1px solid var(--edge);border-radius:18px;overflow:hidden;
  background:linear-gradient(120deg,rgba(0,224,138,.1),rgba(17,24,35,.95) 42%,rgba(21,30,41,.98));
  box-shadow:var(--shadow-card);padding:32px 24px}
@media(min-width:768px){.cta-panel{padding:44px}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media(min-width:1024px){.cta-grid{grid-template-columns:1.1fr .9fr;gap:40px}}
.cta-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35}
.cta-text{margin-top:12px;color:var(--text-2);font-size:15px;max-width:36em}
.cta-actions{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px}
.form-field{margin-bottom:14px}
.form-label{display:block;font-size:13px;letter-spacing:.05em;color:var(--text-2);margin-bottom:8px}
.form-input{width:100%;background:var(--field);border:1px solid var(--edge);border-radius:12px;
  padding:12px 14px;font-size:15px;color:var(--text);min-height:46px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.form-input::placeholder{color:#546479}
.form-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,224,138,.18)}
.form-input.is-error{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,106,43,.16)}
.form-hint{margin-top:8px;font-size:12px;color:var(--text-3)}
.form-error{margin-top:8px;font-size:12px;color:var(--accent);display:none}
.form-error.show{display:block}
.toast{position:absolute;right:20px;bottom:20px;padding:10px 18px;border-radius:999px;
  background:rgba(0,224,138,.15);border:1px solid rgba(0,224,138,.5);color:var(--primary);
  font-size:13px;opacity:0;transform:translateY(8px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease)}
.toast.show{opacity:1;transform:translateY(0)}

/* FAQ */
.faq-panel{border:1px solid var(--edge);border-radius:18px;background:var(--panel);overflow:hidden;box-shadow:var(--shadow-card)}
.faq-item{border-bottom:1px solid var(--edge)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{position:relative;list-style:none;cursor:pointer;padding:18px 56px 18px 20px;
  font-size:16px;font-weight:600;line-height:1.6;color:var(--text);min-height:56px;
  transition:color .18s var(--ease),background-color .18s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transition:opacity .18s var(--ease);box-shadow:0 0 16px rgba(0,224,138,.75)}
.faq-item summary::after{content:"";position:absolute;right:22px;top:50%;width:12px;height:12px;margin-top:-6px;
  border-right:1.6px solid var(--text-3);border-bottom:1.6px solid var(--text-3);
  transform:rotate(45deg);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.faq-item summary:hover{color:var(--primary);background:rgba(255,255,255,.025)}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::before{opacity:1}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--primary)}
.faq-body{padding:0 20px 22px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:52em}

/* 页脚 */
.site-footer{position:relative;background:#080B0F;border-top:1px solid var(--edge);margin-top:8px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.8),rgba(0,224,138,.12) 50%,rgba(0,224,138,0))}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-top:56px;padding-bottom:40px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:40px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
.footer-title{font-size:14px;font-weight:700;color:var(--primary);letter-spacing:.08em;margin-bottom:16px}
.footer-text{font-size:14px;line-height:1.9;color:var(--text-3);max-width:30em}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-links a{font-size:14px;color:var(--text-2);padding:8px 0;min-height:40px;display:flex;align-items:center;
  transition:color .18s var(--ease),padding-left .18s var(--ease)}
.footer-links a:hover{color:var(--primary);padding-left:6px}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-2)}
.footer-contact span{color:var(--text-3);font-size:12px;letter-spacing:.06em;display:block;margin-bottom:2px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding-top:20px;padding-bottom:28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg:#0A0E13;
  --panel:#111823;
  --card:#151E29;
  --line:#1E2A36;
  --line-soft:rgba(255,255,255,.08);
  --primary:#00E08A;
  --accent:#FF6A2B;
  --violet:#7B61FF;
  --cyan:#22D3EE;
  --lime:#C9F227;
  --t1:#E9F1F6;
  --t2:#9AAAB8;
  --t3:#64748B;
  --r-card:14px;
  --r-btn:10px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.05), 0 20px 44px -28px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(0,224,138,.35), 0 0 26px -8px rgba(0,224,138,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:72px 72px;
  opacity:.9;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(0,224,138,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A0E13}
::-webkit-scrollbar-thumb{background:#1E2A36;border-radius:999px;border:2px solid #0A0E13}
::-webkit-scrollbar-thumb:hover{background:rgba(0,224,138,.55)}

.num{font-variant-numeric:tabular-nums;letter-spacing:.04em}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;position:relative;z-index:1}
@media (min-width:768px){.wrap{padding-left:32px;padding-right:32px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,14,19,.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg, rgba(0,224,138,.75), rgba(0,224,138,.12) 45%, transparent 80%);
  pointer-events:none;
}
.site-header.is-scrolled{box-shadow:0 18px 40px -30px rgba(0,0,0,.95)}
.header-inner{display:flex;align-items:center;gap:16px;height:64px}
@media (min-width:768px){.header-inner{height:72px;gap:24px}}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  color:var(--primary);background:rgba(0,224,138,.08);border:1px solid rgba(0,224,138,.35);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.brand-mark svg{width:19px;height:19px;display:block}
.brand-name{display:block;font-size:16px;font-weight:700;line-height:1.15;letter-spacing:.02em}
.brand-sub{display:block;font-size:10px;line-height:1.4;color:var(--t3);letter-spacing:.2em;text-transform:uppercase}

.nav-links{display:none;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:8px 12px;font-size:14px;color:var(--t2);border-radius:8px;
  transition:color .18s var(--ease), background .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(0,224,138,0));
  transform:scaleX(0);transform-origin:left center;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.045)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{
  color:#fff;background:rgba(0,224,138,.09);
  text-shadow:0 0 14px rgba(0,224,138,.55);
}
.nav-link.active::after{transform:scaleX(1)}
.nav-cta{display:none}
@media (min-width:768px){.nav-cta{display:inline-flex;margin-left:8px}}

.nav-toggle{
  margin-left:auto;width:44px;height:44px;display:grid;place-items:center;
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:10px;color:var(--t1);
  cursor:pointer;transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);background:rgba(0,224,138,.08)}
.nav-toggle svg{width:20px;height:20px}
@media (min-width:1024px){
  .nav-links{display:flex}
  .nav-toggle{display:none}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:64px;bottom:0;
    flex-direction:column;align-items:stretch;gap:4px;
    margin-left:0;padding:20px;
    background:rgba(10,14,19,.98);
    border-top:1px solid rgba(0,224,138,.28);
    transform:translateY(-8px);opacity:0;visibility:hidden;
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
    overflow-y:auto;
  }
  .nav-links.open{display:flex;transform:translateY(0);opacity:1;visibility:visible}
  .nav-link{
    font-size:18px;padding:14px 16px;border-left:3px solid transparent;border-radius:0 8px 8px 0;
    border-bottom:1px solid var(--line-soft);
  }
  .nav-link::after{display:none}
  .nav-link.active{
    border-left-color:var(--primary);
    box-shadow:inset 3px 0 18px -8px rgba(0,224,138,.85);
  }
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#06121A;box-shadow:inset 0 1px 0 rgba(255,255,255,.35)}
.btn-primary:hover{background:#3BFFA8;transform:translateY(-1px);box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(0);background:#00C579}
.btn-ghost{border-color:rgba(0,224,138,.45);color:var(--primary);background:transparent}
.btn-ghost:hover{background:rgba(0,224,138,.12);border-color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-line{border-color:var(--line);color:var(--t2);background:rgba(255,255,255,.03)}
.btn-line:hover{border-color:var(--primary);color:var(--primary);background:rgba(0,224,138,.08)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.btn-text{padding:8px 0;min-height:auto;color:var(--primary);font-weight:600;gap:6px}
.btn-text svg{transition:transform .18s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;overflow:hidden;
  background-color:#0A0E13;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg, rgba(10,14,19,.97) 0%, rgba(10,14,19,.92) 42%, rgba(10,14,19,.55) 72%, rgba(10,14,19,.35) 100%);
}
.article-hero::after{
  content:"";position:absolute;top:-40%;left:38%;width:52%;height:180%;
  background:linear-gradient(105deg, rgba(0,224,138,.16), transparent 62%);
  transform:rotate(-8deg);pointer-events:none;
}
.article-hero .wrap{position:relative;z-index:2;padding-top:40px;padding-bottom:44px}
@media (min-width:768px){.article-hero .wrap{padding-top:56px;padding-bottom:64px}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:22px}
.breadcrumb a{color:var(--t2);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.45}
.breadcrumb .current{color:var(--primary);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border-radius:999px;font-size:12px;letter-spacing:.08em;
  color:var(--primary);background:rgba(0,224,138,.10);
  border:1px solid rgba(0,224,138,.35);
}
.chip::before{content:"";width:2px;height:12px;border-radius:2px;background:var(--primary);display:block}
.chip-accent{color:var(--accent);background:rgba(255,106,43,.10);border-color:rgba(255,106,43,.35)}
.chip-accent::before{background:var(--accent)}
.article-title{
  margin:18px 0 0;max-width:26em;
  font-size:clamp(28px,4.2vw,52px);font-weight:800;line-height:1.15;letter-spacing:.01em;color:#fff;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:22px;font-size:13px;color:var(--t2);
}
.meta-row .dot{width:4px;height:4px;border-radius:999px;background:var(--line);display:inline-block}
.meta-chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
  border:1px solid var(--line);font-size:12px;color:var(--t2);letter-spacing:.04em;
}

/* ============ 文章主体 ============ */
.article-shell{padding:48px 0 72px}
@media (min-width:768px){.article-shell{padding:64px 0 96px}}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;justify-content:center}
@media (min-width:1024px){
  .article-grid{grid-template-columns:minmax(0,760px) 250px;gap:56px}
}
.article-body{max-width:780px;font-size:16px;line-height:1.9;color:#D8E4EC}
.article-body > * + *{margin-top:1.2em}
.article-body p{color:#D8E4EC;max-width:42em}
.article-body h2{
  position:relative;margin:2.2em 0 .7em;padding-left:16px;
  font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;color:#fff;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;width:3px;height:1.05em;border-radius:2px;
  background:var(--primary);box-shadow:0 0 18px -4px rgba(0,224,138,.85);
}
.article-body h3{margin:1.8em 0 .5em;font-size:19px;font-weight:600;color:#F2F8FB;line-height:1.45}
.article-body h4{margin:1.5em 0 .4em;font-size:17px;font-weight:600;color:#E9F1F6}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(0,224,138,.35);transition:border-color .18s var(--ease),color .18s var(--ease)}
.article-body a:hover{border-bottom-color:var(--primary);color:#5BFFB8}
.article-body strong{color:#fff;font-weight:700}
.article-body ul,.article-body ol{padding-left:0;list-style:none}
.article-body ul li{position:relative;padding-left:22px;margin:.5em 0;max-width:42em}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px -2px rgba(0,224,138,.9);
}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:30px;margin:.5em 0;counter-increment:li;max-width:42em}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;
  font-size:13px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;background:var(--panel);
  border-left:3px solid var(--primary);border-radius:0 12px 12px 0;color:var(--t2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
}
.article-body blockquote p{color:var(--t2);max-width:42em}
.article-body img{border-radius:12px;margin:1.6em 0 .6em;width:100%;height:auto;background:var(--panel)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--t3);margin-top:2px}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body thead th{background:var(--panel);color:#fff;font-weight:600;font-size:14px;letter-spacing:.03em}
.article-body tbody tr:nth-child(odd){background:var(--panel)}
.article-body tbody tr:hover{background:#18232F}
.article-body hr{border:none;height:1px;background:var(--line);margin:2.4em 0}

.empty-state{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);
  padding:56px 24px;text-align:center;box-shadow:var(--shadow-card);
}
.empty-state .mark{
  width:56px;height:56px;margin:0 auto 18px;border-radius:14px;display:grid;place-items:center;
  border:1px dashed rgba(0,224,138,.45);color:var(--primary);
}
.empty-state h2{font-size:20px;font-weight:700;color:#fff;margin-bottom:8px}
.empty-state p{color:var(--t2);font-size:15px;margin-bottom:22px}

/* ============ 侧栏 ============ */
.article-rail{display:none}
@media (min-width:1024px){
  .article-rail{display:block;position:sticky;top:100px;align-self:start}
}
.rail-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);
  padding:20px;box-shadow:var(--shadow-card);
}
.rail-title{font-size:14px;font-weight:700;color:var(--primary);letter-spacing:.06em;margin-bottom:14px}
.rail-nav{display:flex;flex-direction:column;gap:2px}
.rail-nav a{
  display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:8px;
  font-size:14px;color:var(--t2);border-left:3px solid transparent;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.rail-nav a:hover{background:var(--card);color:var(--t1);border-left-color:var(--primary)}
.rail-actions{display:flex;flex-direction:column;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.rail-meta{font-size:12px;color:var(--t3);line-height:1.8;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}

/* ============ 标签 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;
  font-size:13px;color:var(--t2);border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.tag:hover{background:rgba(0,224,138,.12);border-color:var(--primary);color:var(--primary)}
.tag-spark:hover{background:rgba(123,97,255,.14);border-color:var(--spark);color:#B9A9FF}

/* 相邻导航 */
.neighbor{display:grid;grid-template-columns:1fr;gap:14px;margin-top:36px}
@media (min-width:640px){.neighbor{grid-template-columns:1fr 1fr}}
.neighbor-card{
  display:flex;align-items:center;gap:14px;padding:18px 20px;
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.neighbor-card:hover{border-color:rgba(0,224,138,.5);background:var(--card);transform:translateY(-2px)}
.neighbor-card .arrow{color:var(--primary);flex-shrink:0;font-size:18px;line-height:1}
.neighbor-card small{display:block;font-size:12px;color:var(--t3);letter-spacing:.08em;margin-bottom:2px}
.neighbor-card span.t{font-size:15px;font-weight:600;color:var(--t1)}
.neighbor-card.next{justify-content:flex-end;text-align:right}

/* ============ 相关推荐 ============ */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:76px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.h2{position:relative;font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.25;color:#fff;padding-left:16px}
.h2::before{content:"";position:absolute;left:0;top:.2em;width:3px;height:1.05em;border-radius:2px;background:var(--primary);box-shadow:0 0 18px -4px rgba(0,224,138,.85)}
.section-desc{margin-top:10px;font-size:15px;color:var(--t2);max-width:42em}
.rec-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:640px){.rec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.rec-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.rec-card{
  display:flex;flex-direction:column;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.rec-card:hover{transform:translateY(-2px);border-color:rgba(0,224,138,.55);box-shadow:var(--glow)}
.rec-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--panel)}
.rec-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rec-card:hover .rec-cover img{transform:scale(1.03)}
.rec-badge{
  position:absolute;left:12px;bottom:12px;
  padding:4px 10px;border-radius:999px;font-size:12px;letter-spacing:.06em;
  color:#06121A;background:var(--primary);font-weight:600;
}
.rec-body{padding:18px 20px 20px}
.rec-body h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--t1);margin-bottom:8px}
.rec-card:hover .rec-body h3{color:#fff}
.rec-body p{font-size:14px;line-height:1.75;color:var(--t2)}
.rec-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:12px;color:var(--t3)}

/* ============ CTA 面板 ============ */
.cta-panel{
  position:relative;overflow:hidden;
  border:1px solid rgba(0,224,138,.3);border-radius:18px;
  background:linear-gradient(120deg, rgba(0,224,138,.10), rgba(17,24,35,.96) 46%, rgba(123,97,255,.10));
  padding:34px 26px;box-shadow:var(--shadow-card);
}
@media (min-width:768px){.cta-panel{padding:44px 44px}}
.cta-panel::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:999px;
  background:radial-gradient(circle, rgba(0,224,138,.20), transparent 68%);pointer-events:none;
}
.cta-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:24px;align-items:center}
@media (min-width:1024px){.cta-grid{grid-template-columns:minmax(0,1fr) auto}}
.cta-panel h2{font-size:clamp(20px,2.3vw,28px);font-weight:700;color:#fff;line-height:1.35}
.cta-panel p{margin-top:10px;font-size:15px;color:var(--t2);max-width:46em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.toast{
  position:fixed;right:20px;bottom:24px;z-index:120;
  padding:12px 18px;border-radius:10px;font-size:14px;
  color:#06121A;background:var(--primary);box-shadow:var(--glow);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.toast.show{opacity:1;transform:translateY(0)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:#080B0F;border-top:1px solid var(--line);
  padding:56px 0 28px;margin-top:16px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg, transparent, rgba(0,224,138,.7), transparent);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
.footer-title{font-size:14px;font-weight:600;color:var(--primary);letter-spacing:.06em;margin-bottom:16px}
.footer-text{font-size:14px;color:var(--t2);line-height:1.85;max-width:34em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--t2);transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--t2)}
.footer-contact span{display:inline-block;min-width:66px;color:var(--t3);font-size:13px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t3);
}
.footer-bottom a{color:var(--t2);transition:color .18s var(--ease)}
.footer-bottom a:hover{color:var(--primary)}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .rec-card:hover,.neighbor-card:hover,.btn-primary:hover,.btn-ghost:hover{transform:none}
  .rec-card:hover .rec-cover img{transform:none}
}

/* roulang page: category1 */
:root{
  --primary:#00E08A;
  --primary-soft:rgba(0,224,138,.12);
  --primary-line:rgba(0,224,138,.35);
  --accent:#FF6A2B;
  --violet:#7B61FF;
  --lemon:#C9F227;
  --cyan:#22D3EE;
  --bg:#0A0E13;
  --panel:#111823;
  --card:#151E29;
  --line:#1E2A36;
  --line-soft:rgba(255,255,255,.08);
  --text:#E9F1F6;
  --muted:#9AAAB8;
  --dim:#64748B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.05), 0 20px 44px -28px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(0,224,138,.35), 0 0 26px -8px rgba(0,224,138,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:104px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(0,224,138,.3);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A0E13}
::-webkit-scrollbar-thumb{background:#1E2A36;border-radius:8px;border:2px solid #0A0E13}
::-webkit-scrollbar-thumb:hover{background:#2A3A4A}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.wrap{padding-left:32px;padding-right:32px}}

.num{font-variant-numeric:tabular-nums;letter-spacing:.04em}

/* ============ 顶栏 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(10,14,19,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(10,14,19,.94);
  box-shadow:0 20px 42px -32px rgba(0,0,0,1),0 1px 0 rgba(255,255,255,.04);
}
.neon-line{
  height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.85),rgba(0,224,138,.16) 44%,transparent 80%);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
@media (min-width:768px){.header-inner{height:72px}}

.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;display:grid;place-items:center;border-radius:10px;
  color:var(--primary);
  background:linear-gradient(150deg,rgba(0,224,138,.2),rgba(0,224,138,.02));
  border:1px solid var(--primary-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-name{font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-sub{font-size:9.5px;letter-spacing:.26em;color:var(--dim);text-transform:uppercase;font-variant-numeric:tabular-nums}

.nav-links{display:none;align-items:center;gap:0}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 12px;font-size:14.5px;color:var(--muted);white-space:nowrap;
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);box-shadow:0 0 12px rgba(0,224,138,.65);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text);text-shadow:0 0 14px rgba(0,224,138,.45)}
.nav-link.active::after{transform:scaleX(1)}

.header-actions{display:flex;align-items:center;gap:10px}
.header-cta{display:none}
@media (min-width:768px){.header-cta{display:inline-flex}}

.menu-toggle{
  width:44px;height:44px;display:grid;place-content:center;gap:5px;
  border:1px solid var(--line-soft);border-radius:10px;background:rgba(255,255,255,.02);
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.menu-toggle:hover{border-color:var(--primary-line);background:rgba(0,224,138,.07)}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media (min-width:1024px){.menu-toggle{display:none}}

.mobile-drawer{
  position:fixed;top:65px;left:0;right:0;bottom:0;z-index:55;
  background:rgba(10,14,19,.97);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:20px 20px 44px;display:flex;flex-direction:column;gap:4px;
  overflow-y:auto;animation:drawerIn .22s ease-out;
}
@media (min-width:768px){.mobile-drawer{top:73px;padding-left:32px;padding-right:32px}}
.mobile-drawer[hidden]{display:none!important}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.drawer-link{
  display:block;font-size:18px;color:var(--muted);padding:13px 16px;border-radius:0 10px 10px 0;
  border-left:3px solid transparent;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.drawer-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.drawer-link.is-active{
  color:var(--text);border-left-color:var(--primary);
  background:linear-gradient(90deg,rgba(0,224,138,.16),transparent);
  text-shadow:0 0 16px rgba(0,224,138,.4);
}
.drawer-divider{height:1px;background:linear-gradient(90deg,rgba(0,224,138,.55),transparent);margin:16px 0 14px}
.drawer-cta{width:100%;margin-top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;line-height:1.2;
  transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#06121A;box-shadow:inset 0 1px 0 rgba(255,255,255,.28)}
.btn-primary:hover{background:#17F59B;transform:translateY(-1px);box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(0);background:#00C97C}
.btn-ghost{
  border:1px solid var(--primary-line);color:var(--text);background:rgba(0,224,138,.05);
}
.btn-ghost:hover{background:rgba(0,224,138,.14);border-color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0);background:rgba(0,224,138,.2)}
.btn-sm{min-height:44px;padding:10px 18px;font-size:14px}

/* ============ 通用区块 ============ */
.section{padding:64px 0}
@media (min-width:768px){.section{padding:96px 0}}
.section-tight{padding:48px 0}
@media (min-width:768px){.section-tight{padding:64px 0}}

.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 13px;border-radius:999px;font-size:12px;letter-spacing:.08em;
  color:var(--primary);background:var(--primary-soft);
  border:1px solid var(--primary-line);
}
.chip::before{content:"";width:2px;height:12px;border-radius:2px;background:currentColor}
.chip-plain{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;color:var(--muted);border:1px solid var(--line);
  font-variant-numeric:tabular-nums;
}
.chip-accent{color:var(--accent);background:rgba(255,106,43,.1);border-color:rgba(255,106,43,.35)}
.chip-violet{color:var(--violet);background:rgba(123,97,255,.1);border-color:rgba(123,97,255,.35)}

.sec-head{max-width:52rem;margin-bottom:40px}
.sec-head h2{
  font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.35;
  padding-left:16px;position:relative;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 18px rgba(0,224,138,.6);
}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.9;max-width:42em}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding-top:108px;padding-bottom:52px}
@media (min-width:768px){.hero{padding-top:142px;padding-bottom:80px}}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.6;transform:scale(1.02);
}
.hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(10,14,19,.97) 0%,rgba(10,14,19,.9) 34%,rgba(10,14,19,.5) 70%,rgba(10,14,19,.28) 100%),
    linear-gradient(180deg,rgba(10,14,19,.92) 0%,rgba(10,14,19,.3) 42%,rgba(10,14,19,.98) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:78px 78px;
  -webkit-mask-image:radial-gradient(120% 85% at 12% 18%,#000 0%,transparent 68%);
  mask-image:radial-gradient(120% 85% at 12% 18%,#000 0%,transparent 68%);
}
.hero-beam{
  position:absolute;top:-25%;left:-12%;width:58%;height:150%;pointer-events:none;
  background:linear-gradient(100deg,rgba(0,224,138,.16),rgba(0,224,138,0) 62%);
  transform:skewX(-14deg);
}
.hero-inner{position:relative;z-index:2;display:grid;gap:40px}
@media (min-width:1024px){
  .hero-inner{grid-template-columns:minmax(0,7fr) minmax(0,5fr);align-items:center;gap:52px}
}
.hero-copy h1{
  margin-top:20px;
  font-size:clamp(28px,4.2vw,52px);font-weight:800;line-height:1.15;letter-spacing:-.01em;
  text-wrap:balance;
}
.hero-sub{margin-top:18px;color:var(--muted);font-size:16.5px;line-height:1.95;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-stats{
  display:flex;flex-wrap:wrap;margin-top:34px;padding-top:22px;
  border-top:1px solid var(--line-soft);
}
.stat{display:flex;flex-direction:column;gap:3px;padding:0 22px;border-left:1px solid var(--line)}
.stat:first-child{padding-left:0;border-left:0}
.stat-num{
  font-size:clamp(20px,2.4vw,27px);font-weight:800;color:var(--primary);line-height:1.2;
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.stat-label{font-size:12.5px;color:var(--dim);letter-spacing:.06em;white-space:nowrap}
@media (max-width:639px){
  .stat{padding:0 14px}
  .stat-num{font-size:19px}
  .stat-label{font-size:11.5px}
}
.hero-figure{margin:0}
.hero-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:16px;
  border:1px solid var(--line-soft);box-shadow:var(--shadow-card);
}
.hero-figure figcaption{margin-top:12px;font-size:13px;color:var(--dim);letter-spacing:.02em}

/* ============ 总览 + 锚点目录 ============ */
.overview-grid{display:grid;gap:34px}
@media (min-width:1024px){
  .overview-grid{grid-template-columns:262px minmax(0,1fr);gap:60px;align-items:start}
}
.anchor-panel{position:relative}
@media (min-width:1024px){.anchor-panel{position:sticky;top:104px}}
.anchor-label{
  font-size:12px;letter-spacing:.14em;color:var(--dim);margin-bottom:14px;text-transform:uppercase;
  font-variant-numeric:tabular-nums;
}
.anchor-nav{display:flex;flex-direction:column;gap:2px}
.anchor-link{
  display:flex;align-items:center;gap:10px;padding:11px 14px;
  font-size:14.5px;color:var(--muted);border-left:3px solid transparent;border-radius:0 8px 8px 0;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.anchor-link:hover{color:var(--text);background:rgba(255,255,255,.035)}
.anchor-link.is-active{
  color:var(--text);border-left-color:var(--primary);
  background:linear-gradient(90deg,rgba(0,224,138,.14),transparent);
}
.anchor-link.is-active .anchor-idx{color:var(--primary);text-shadow:0 0 12px rgba(0,224,138,.5)}
.anchor-idx{font-size:12px;color:var(--dim);font-variant-numeric:tabular-nums;letter-spacing:.06em}

.overview-body{
  padding:26px;border:1px solid var(--line-soft);border-radius:var(--radius-card);
  background:var(--panel);box-shadow:var(--shadow-card);
}
@media (min-width:768px){.overview-body{padding:36px 38px}}
.overview-body h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;line-height:1.4}
.overview-body p{margin-top:16px;color:var(--muted);font-size:15.5px;line-height:1.95;max-width:42em}
.overview-body p strong{color:var(--text);font-weight:600}
.family-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px;padding-top:22px;border-top:1px solid var(--line-soft)}

/* ============ 图文条目流 ============ */
.entry-list{display:flex;flex-direction:column;gap:24px}
@media (min-width:768px){.entry-list{gap:28px}}
.entry{
  display:grid;gap:26px;padding:24px;
  border:1px solid var(--line-soft);border-radius:var(--radius-card);
  background:var(--panel);box-shadow:var(--shadow-card);
  transition:border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.entry:hover{border-color:rgba(0,224,138,.35);transform:translateY(-2px)}
@media (min-width:1024px){
  .entry{grid-template-columns:minmax(0,7fr) minmax(0,5fr);align-items:center;gap:40px;padding:30px 32px}
  .entry:nth-child(even){grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
  .entry:nth-child(even) .entry-media{grid-column:2;grid-row:1}
  .entry:nth-child(even) .entry-body{grid-column:1;grid-row:1;order:-1}
}
.entry-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;
  border:1px solid var(--line-soft);
}
.entry-body h3{font-size:clamp(18px,1.7vw,22px);font-weight:700;line-height:1.45}
.entry-body p{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.95;max-width:42em}
.entry-facts{
  display:grid;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line-soft);
}
@media (min-width:640px){.entry-facts{grid-template-columns:repeat(3,minmax(0,1fr))}}
.fact{display:flex;flex-direction:column;gap:2px}
.fact-k{font-size:11.5px;letter-spacing:.1em;color:var(--dim)}
.fact-v{font-size:14.5px;color:var(--text);font-variant-numeric:tabular-nums;font-weight:600}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;font-size:12px;
  color:var(--muted);border:1px solid var(--line);letter-spacing:.04em;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.tag:hover{color:var(--primary);border-color:var(--primary-line);background:var(--primary-soft)}
.entry-idx{
  font-size:12px;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:.16em;
  display:block;margin-bottom:10px;
}

/* ============ 延伸阅读行卡 ============ */
.read-list{display:flex;flex-direction:column;gap:12px}
.read-row{
  position:relative;display:flex;align-items:center;gap:18px;
  padding:20px 22px;border:1px solid var(--line-soft);border-radius:var(--radius-card);
  background:var(--panel);overflow:hidden;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.read-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);
  transform:scaleY(0);transform-origin:top;transition:transform .2s var(--ease);
  box-shadow:0 0 16px rgba(0,224,138,.7);
}
.read-row:hover{background:var(--card);border-color:rgba(0,224,138,.3);transform:translateY(-2px)}
.read-row:hover::before{transform:scaleY(1)}
.read-num{
  font-size:22px;font-weight:800;color:var(--primary);line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:.06em;flex-shrink:0;
  transition:text-shadow .2s var(--ease);
}
.read-row:hover .read-num{text-shadow:0 0 18px rgba(0,224,138,.7)}
.read-main{flex:1;min-width:0}
.read-main h3{font-size:17px;font-weight:600;line-height:1.5}
.read-main p{margin-top:6px;color:var(--muted);font-size:14px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.read-meta{
  display:none;flex-shrink:0;color:var(--dim);font-size:12.5px;letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
}
@media (min-width:768px){.read-meta{display:block}}
.read-arrow{
  flex-shrink:0;color:var(--dim);font-size:18px;line-height:1;
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.read-row:hover .read-arrow{color:var(--primary);transform:translateX(4px)}

/* ============ CTA ============ */
.cta-panel{
  display:grid;gap:26px;padding:30px 26px;border-radius:20px;
  border:1px solid rgba(0,224,138,.3);
  background:
    radial-gradient(120% 150% at 0% 0%,rgba(0,224,138,.15),rgba(17,24,35,.94) 58%),
    var(--panel);
  box-shadow:var(--shadow-card);
}
@media (min-width:1024px){
  .cta-panel{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:40px 44px;gap:40px}
}
.cta-panel h2{font-size:clamp(20px,2.3vw,28px);font-weight:700;line-height:1.4}
.cta-panel p{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.9;max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:#080B10;border-top:1px solid rgba(0,224,138,.22);
  padding-top:56px;
}
.footer-grid{display:grid;gap:36px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}}
.footer-title{font-size:14px;font-weight:600;color:var(--primary);margin-bottom:14px;letter-spacing:.08em}
.footer-text{color:var(--muted);font-size:14px;line-height:1.85;max-width:38ch}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--muted);font-size:14.5px;transition:color .18s var(--ease),transform .18s var(--ease);width:fit-content}
.footer-links a:hover{color:var(--primary);transform:translateX(3px)}
.footer-contact{display:flex;flex-direction:column;gap:10px}
.footer-contact div{display:flex;gap:10px;color:var(--muted);font-size:14px;line-height:1.7}
.footer-contact span{color:var(--dim);flex-shrink:0;min-width:60px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:46px;padding:20px 0 30px;border-top:1px solid var(--line-soft);
  color:var(--dim);font-size:13.5px;font-variant-numeric:tabular-nums;
}
.footer-bottom a{color:var(--dim);transition:color .18s var(--ease)}
.footer-bottom a:hover{color:var(--primary)}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .entry:hover,.read-row:hover,.btn:hover{transform:none!important}
}

/* roulang page: category2 */
:root{
    --c-primary:#00E08A;
    --c-primary-soft:rgba(0,224,138,.10);
    --c-accent:#FF6A2B;
    --c-violet:#7B61FF;
    --c-cyan:#22D3EE;
    --c-lemon:#C9F227;
    --bg-base:#0A0E13;
    --bg-panel:#111823;
    --bg-card:#151E29;
    --bg-input:#0F1620;
    --line:#1E2A36;
    --line-soft:rgba(255,255,255,.08);
    --tx:#E9F1F6;
    --tx-2:#9AAAB8;
    --tx-3:#64748B;
    --r-card:14px;
    --r-btn:10px;
    --shadow-card: inset 0 1px 0 rgba(255,255,255,.05), 0 20px 44px -28px rgba(0,0,0,.9);
    --glow: 0 0 0 1px rgba(0,224,138,.35), 0 0 26px -8px rgba(0,224,138,.5);
    --ease: cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg-base);
    color:var(--tx);
    font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
                     linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
    background-size:64px 64px;
    opacity:.6;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  ul{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  h1{font-size:clamp(28px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:.01em;}
  h2{font-size:clamp(22px,2.6vw,34px);line-height:1.3;font-weight:700;}
  h3{font-size:18px;line-height:1.5;font-weight:600;}
  p{max-width:42em;}
  ::selection{background:rgba(0,224,138,.28);color:#fff;}

  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:#0A0E13;}
  ::-webkit-scrollbar-thumb{background:#233040;border-radius:8px;border:2px solid #0A0E13;}
  ::-webkit-scrollbar-thumb:hover{background:#2f4256;}

  :focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

  .wrap{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;position:relative;z-index:1;}
  @media (min-width:768px){ .wrap{padding-left:32px;padding-right:32px;} }

  .section{padding:64px 0;position:relative;z-index:1;}
  @media (min-width:768px){ .section{padding:96px 0;} }
  .section-tight{padding:48px 0;}
  @media (min-width:768px){ .section-tight{padding:64px 0;} }

  .sec-head{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-end;justify-content:space-between;margin-bottom:34px;}
  .sec-head-main{max-width:640px;}
  .h2-line{border-left:3px solid var(--c-primary);padding-left:14px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.08em;text-transform:uppercase;
    color:var(--c-primary);font-variant-numeric:tabular-nums;margin-bottom:12px;
  }
  .eyebrow::before{content:"";width:18px;height:1px;background:var(--c-primary);display:inline-block;opacity:.7;}
  .sec-desc{color:var(--tx-2);font-size:15px;line-height:1.85;margin-top:12px;}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);
    font-size:14px;font-weight:600;min-height:44px;transition:gap .18s var(--ease),color .18s var(--ease);
  }
  .text-link:hover{gap:12px;color:#5CF2BB;}
  .text-link .arw{transition:transform .18s var(--ease);}
  .text-link:hover .arw{transform:translateX(3px);}

  /* ---------- 导航 ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:80;
    height:64px;
    background:rgba(10,14,19,.85);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    transition:box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .site-header::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
    background:linear-gradient(90deg, rgba(0,224,138,.9), rgba(0,224,138,.15) 42%, rgba(0,224,138,0) 78%);
  }
  .site-header.scrolled{background:rgba(8,11,15,.94);box-shadow:0 18px 40px -30px rgba(0,0,0,.95);}
  @media (min-width:768px){ .site-header{height:72px;} }

  .nav-wrap{max-width:1240px;margin:0 auto;height:100%;display:flex;align-items:center;gap:20px;padding:0 20px;}
  @media (min-width:768px){ .nav-wrap{padding:0 32px;} }

  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;
    border-radius:10px;border:1px solid rgba(0,224,138,.4);background:var(--c-primary-soft);
    color:var(--c-primary);transition:box-shadow .2s var(--ease);
  }
  .brand:hover .brand-mark{box-shadow:var(--glow);}
  .brand-mark svg{width:18px;height:18px;}
  .brand-name{display:block;font-size:16px;font-weight:700;letter-spacing:.02em;line-height:1.3;color:var(--tx);}
  .brand-sub{display:block;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--tx-3);line-height:1.4;}

  .nav-links{display:none;align-items:center;gap:2px;margin-left:auto;}
  @media (min-width:1024px){ .nav-links{display:flex;} }
  .nav-link{
    position:relative;display:inline-flex;align-items:center;min-height:44px;
    padding:10px 12px;font-size:14.5px;color:var(--tx-2);border-radius:8px;
    transition:color .18s var(--ease),background .18s var(--ease);white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;border-radius:2px;
    background:var(--c-primary);transform:scaleX(0);transform-origin:left;
    transition:transform .2s var(--ease);
  }
  .nav-link:hover{color:var(--tx);background:rgba(255,255,255,.03);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:#fff;text-shadow:0 0 12px rgba(0,224,138,.6);}
  .nav-link.active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(0,224,138,.85);}

  .nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
  @media (min-width:1024px){ .nav-actions{margin-left:16px;} }

  .burger{
    display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
    width:44px;height:44px;padding:0 11px;border-radius:10px;
    border:1px solid var(--line);background:rgba(21,30,41,.7);cursor:pointer;
    transition:border-color .18s var(--ease),background .18s var(--ease);
  }
  .burger span{display:block;height:2px;border-radius:2px;background:var(--tx-2);transition:transform .2s var(--ease),background .2s var(--ease);}
  .burger:hover{border-color:rgba(0,224,138,.5);}
  .burger:hover span{background:var(--c-primary);}
  .burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);background:var(--c-primary);}
  .burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);background:var(--c-primary);}
  @media (min-width:1024px){ .burger{display:none;} }

  .drawer{
    position:fixed;inset:0;z-index:75;padding:92px 22px 40px;
    background:rgba(8,11,15,.98);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    visibility:hidden;opacity:0;transform:translateY(-14px);pointer-events:none;
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s linear;
    overflow-y:auto;
  }
  .drawer.open{visibility:visible;opacity:1;transform:none;pointer-events:auto;}
  .drawer-link{
    position:relative;display:flex;align-items:center;min-height:56px;
    font-size:18px;color:var(--tx-2);border-bottom:1px solid var(--line);padding-left:16px;
    transition:color .18s var(--ease),background .18s var(--ease);
  }
  .drawer-link::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
    background:var(--c-primary);opacity:0;transition:opacity .2s var(--ease);
  }
  .drawer-link:hover{color:var(--tx);background:rgba(255,255,255,.03);}
  .drawer-link.active{color:#fff;}
  .drawer-link.active::before{opacity:1;box-shadow:0 0 12px var(--c-primary);}
  .drawer-cta{margin-top:26px;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:12px 24px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease);
  }
  .btn-sm{min-height:40px;padding:9px 18px;font-size:14px;}
  .btn-primary{background:var(--c-primary);color:#06121A;}
  .btn-primary:hover{background:#25F0A1;transform:translateY(-1px);box-shadow:var(--glow);}
  .btn-primary:active{transform:translateY(0);box-shadow:none;}
  .btn-ghost{background:transparent;border-color:rgba(0,224,138,.45);color:#8CF0C6;}
  .btn-ghost:hover{background:var(--c-primary-soft);border-color:var(--c-primary);transform:translateY(-1px);}
  .btn-quiet{background:rgba(255,255,255,.04);border-color:var(--line);color:var(--tx);}
  .btn-quiet:hover{border-color:rgba(0,224,138,.45);color:#8CF0C6;}
  .btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

  /* ---------- 标签 ---------- */
  .chip{
    display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;
    font-size:12px;letter-spacing:.08em;font-variant-numeric:tabular-nums;
    border:1px solid rgba(0,224,138,.38);background:var(--c-primary-soft);color:#8CF0C6;
    transition:background .18s var(--ease),color .18s var(--ease);
  }
  .chip::before{content:"";width:2px;height:12px;border-radius:2px;background:var(--c-primary);}
  .chip:hover{background:var(--c-primary);color:#06121A;}
  .chip:hover::before{background:#06121A;}
  .chip-plain{
    display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
    border:1px solid var(--line);color:var(--tx-3);font-size:12px;letter-spacing:.06em;
    font-variant-numeric:tabular-nums;
  }
  .chip-accent{border-color:rgba(255,106,43,.42);background:rgba(255,106,43,.12);color:#FFB08A;}
  .chip-accent::before{background:var(--c-accent);}
  .chip-violet{border-color:rgba(123,97,255,.42);background:rgba(123,97,255,.12);color:#BEB2FF;}
  .chip-violet::before{background:var(--c-violet);}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;padding-top:118px;padding-bottom:64px;overflow:hidden;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
  }
  @media (min-width:768px){ .hero{padding-top:156px;padding-bottom:92px;} }
  .hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(100deg, rgba(6,9,13,.96) 0%, rgba(7,11,16,.9) 44%, rgba(7,11,16,.34) 100%);
  }
  .hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(180deg, rgba(10,14,19,.5) 0%, rgba(10,14,19,0) 30%, rgba(10,14,19,.92) 100%);
  }
  .hero-band{
    position:absolute;top:-10%;right:-6%;width:44%;height:130%;pointer-events:none;
    background:linear-gradient(180deg, rgba(0,224,138,.16), rgba(0,224,138,0) 70%);
    transform:skewX(-14deg);opacity:.5;
  }
  .hero-inner{position:relative;z-index:3;}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:22px;}
  .crumb a{color:var(--tx-2);transition:color .18s var(--ease);}
  .crumb a:hover{color:var(--c-primary);}
  .crumb .sep{opacity:.5;}
  .crumb .now{color:var(--c-primary);}
  .hero h1{max-width:16em;margin:18px 0 16px;}
  .hero-sub{color:var(--tx-2);font-size:16px;line-height:1.85;max-width:36em;}
  @media (min-width:768px){ .hero-sub{font-size:17.5px;} }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
  .hero-stats{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;
    margin-top:40px;border-top:1px solid var(--line-soft);padding-top:22px;
  }
  @media (min-width:768px){ .hero-stats{grid-template-columns:repeat(4,minmax(0,1fr));} }
  .hero-stat{padding:6px 18px 6px 0;}
  .hero-stat + .hero-stat{border-left:1px solid var(--line-soft);padding-left:18px;}
  @media (max-width:767px){
    .hero-stat:nth-child(3){border-left:none;padding-left:0;}
    .hero-stat:nth-child(n+3){border-top:1px solid var(--line-soft);margin-top:12px;padding-top:14px;}
  }
  .hero-stat b{
    display:block;font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--c-primary);
    font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.2;
  }
  .hero-stat span{display:block;font-size:13px;color:var(--tx-3);margin-top:4px;}

  /* ---------- 阶段推进条 ---------- */
  .track{display:grid;grid-template-columns:1fr;gap:14px;}
  @media (min-width:768px){ .track{grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;} }
  .track-node{
    position:relative;padding:20px 16px;border:1px solid var(--line);border-radius:var(--r-card);
    background:var(--bg-panel);box-shadow:var(--shadow-card);
    transition:border-color .18s var(--ease),transform .18s var(--ease);
  }
  .track-node:hover{border-color:rgba(0,224,138,.4);transform:translateY(-2px);}
  @media (min-width:768px){
    .track-node::after{
      content:"";position:absolute;left:-12px;top:37px;width:12px;height:1px;background:var(--line);
    }
    .track-node:first-child::after{display:none;}
  }
  .track-dot{
    display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;
    border-radius:50%;border:1px solid rgba(0,224,138,.4);background:var(--c-primary-soft);
    color:var(--c-primary);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
    letter-spacing:.04em;margin-bottom:14px;
  }
  .track-node h3{font-size:16.5px;margin-bottom:6px;}
  .track-meta{font-size:12.5px;color:var(--c-cyan);font-variant-numeric:tabular-nums;letter-spacing:.04em;margin-bottom:8px;}
  .track-node p.track-desc{font-size:13.5px;line-height:1.75;color:var(--tx-3);max-width:none;}
  .track-node.is-current{border-color:rgba(0,224,138,.5);box-shadow:var(--glow);}
  .track-node.is-current .track-dot{background:var(--c-primary);color:#06121A;box-shadow:0 0 18px -2px rgba(0,224,138,.85);}
  .track-node.is-current::before{
    content:"当前阶段";position:absolute;top:-11px;left:16px;padding:2px 10px;border-radius:999px;
    background:#06121A;border:1px solid rgba(0,224,138,.5);color:var(--c-primary);
    font-size:11px;letter-spacing:.08em;line-height:1.7;
  }

  /* ---------- 阶段卡 ---------- */
  .stage-list{display:flex;flex-direction:column;gap:16px;}
  .stage-card{
    display:grid;grid-template-columns:1fr;gap:18px;padding:22px;
    border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-card);
    box-shadow:var(--shadow-card);
    transition:border-color .18s var(--ease),transform .18s var(--ease),background .18s var(--ease);
  }
  .stage-card:hover{border-color:rgba(0,224,138,.4);transform:translateY(-2px);background:#18232F;}
  @media (min-width:1000px){ .stage-card{grid-template-columns:76px minmax(0,1fr) 264px;gap:24px;align-items:start;} }
  .stage-num{
    font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--c-primary);
    font-variant-numeric:tabular-nums;letter-spacing:.04em;line-height:1;
  }
  .stage-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:10px;}
  .stage-top h3{font-size:20px;}
  .stage-body > p{color:var(--tx-2);font-size:15px;line-height:1.85;}
  .point-list{margin:16px 0 0;display:flex;flex-direction:column;gap:9px;}
  .point-list li{
    position:relative;padding-left:18px;font-size:14.5px;color:var(--tx-2);line-height:1.8;
  }
  .point-list li::before{
    content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--c-primary);
  }
  .check-line{
    display:flex;flex-wrap:wrap;gap:8px;align-items:baseline;
    margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:14px;color:var(--tx-2);
  }
  .check-line b{color:var(--c-lemon);font-weight:600;font-size:12.5px;letter-spacing:.08em;}
  .stage-media{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg-panel);}
  .stage-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease);}
  .stage-card:hover .stage-media img{transform:scale(1.03);}
  .stage-media figcaption{padding:10px 12px;font-size:12.5px;color:var(--tx-3);border-top:1px solid var(--line);}

  /* ---------- 指标 ---------- */
  .metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
  @media (min-width:900px){ .metric-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;} }
  .metric-card{
    padding:22px 20px;border:1px solid var(--line);border-radius:var(--r-card);
    background:var(--bg-card);box-shadow:var(--shadow-card);
    transition:border-color .18s var(--ease),transform .18s var(--ease);
  }
  .metric-card:hover{border-color:rgba(0,224,138,.42);transform:translateY(-2px);}
  .metric-value{
    font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--c-primary);
    font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.15;
  }
  .metric-label{font-size:14.5px;color:var(--tx);margin-top:8px;font-weight:600;}
  .metric-note{font-size:13px;color:var(--tx-3);line-height:1.75;margin-top:6px;}

  .load-rows{margin-top:22px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg-panel);}
  .load-row{
    display:grid;grid-template-columns:1fr;gap:6px;padding:16px 18px;border-bottom:1px solid var(--line);
    transition:background .18s var(--ease);
  }
  .load-row:last-child{border-bottom:none;}
  .load-row:hover{background:var(--bg-card);}
  @media (min-width:860px){ .load-row{grid-template-columns:210px 150px 160px minmax(0,1fr);align-items:center;gap:16px;} }
  .load-row .lb{font-size:15px;font-weight:600;color:var(--tx);}
  .load-row .num{font-size:13.5px;color:var(--c-cyan);font-variant-numeric:tabular-nums;letter-spacing:.03em;}
  .load-row .desc{font-size:13.5px;color:var(--tx-3);line-height:1.75;}

  /* ---------- FAQ ---------- */
  .faq-panel{
    padding:14px;border:1px solid var(--line);border-radius:18px;background:var(--bg-panel);
    box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:10px;
  }
  @media (min-width:768px){ .faq-panel{padding:20px;gap:12px;} }
  .faq-item{
    border:1px solid var(--line);border-radius:var(--r-card);background:rgba(10,14,19,.55);
    overflow:hidden;transition:border-color .18s var(--ease),background .18s var(--ease);
  }
  .faq-item:hover{border-color:rgba(0,224,138,.32);}
  .faq-item[open]{border-color:rgba(0,224,138,.42);background:rgba(21,30,41,.8);}
  .faq-item summary{
    list-style:none;cursor:pointer;position:relative;display:flex;align-items:center;gap:14px;
    min-height:56px;padding:14px 52px 14px 18px;font-size:15.5px;font-weight:600;color:var(--tx);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::before{
    content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;
    background:var(--c-primary);opacity:0;transition:opacity .2s var(--ease);box-shadow:0 0 12px var(--c-primary);
  }
  .faq-item[open] summary::before{opacity:1;}
  .faq-item summary::after{
    content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
    font-size:20px;line-height:1;color:var(--tx-3);transition:transform .22s var(--ease),color .22s var(--ease);
  }
  .faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);color:var(--c-primary);}
  .faq-body{padding:0 18px 18px;color:var(--tx-2);font-size:15px;line-height:1.85;max-width:70em;}

  /* ---------- 相关栏目 ---------- */
  .more-grid{display:grid;grid-template-columns:1fr;gap:14px;}
  @media (min-width:640px){ .more-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (min-width:1100px){ .more-grid{grid-template-columns:repeat(4,minmax(0,1fr));} }
  .more-card{
    display:flex;flex-direction:column;gap:10px;padding:20px;border:1px solid var(--line);
    border-radius:var(--r-card);background:var(--bg-card);box-shadow:var(--shadow-card);
    transition:border-color .18s var(--ease),transform .18s var(--ease);
  }
  .more-card:hover{border-color:rgba(0,224,138,.45);transform:translateY(-2px);}
  .more-card h3{font-size:16.5px;}
  .more-card p{font-size:13.5px;color:var(--tx-3);line-height:1.8;}
  .more-card .arrow{margin-top:auto;color:var(--c-primary);font-size:13.5px;display:inline-flex;align-items:center;gap:6px;}
  .more-card:hover .arrow{gap:11px;}

  /* ---------- CTA ---------- */
  .cta-panel{
    display:grid;grid-template-columns:1fr;gap:26px;padding:28px;
    border:1px solid rgba(0,224,138,.28);border-radius:18px;
    background:
      radial-gradient(120% 140% at 0% 0%, rgba(0,224,138,.12) 0%, rgba(0,224,138,0) 55%),
      var(--bg-panel);
    box-shadow:var(--shadow-card);
  }
  @media (min-width:768px){ .cta-panel{padding:38px;gap:34px;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:center;} }
  .cta-panel h2{font-size:clamp(21px,2.4vw,30px);}
  .cta-panel .cta-desc{color:var(--tx-2);font-size:15px;line-height:1.85;margin-top:12px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px;}
  .field{display:block;}
  .field-label{display:block;font-size:13px;color:var(--tx-2);margin-bottom:7px;letter-spacing:.02em;}
  .field input{
    width:100%;min-height:46px;padding:12px 14px;border-radius:12px;
    background:var(--bg-input);border:1px solid var(--line);color:var(--tx);font-size:15px;
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .field input::placeholder{color:#4C5967;}
  .field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(0,224,138,.18);}
  .field.is-error input{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(255,106,43,.16);}
  .err-msg{display:none;margin-top:7px;font-size:13px;color:#FF9C6B;}
  .field.is-error .err-msg{display:block;}
  .form-row{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;}
  .form-row .field{flex:1 1 240px;}
  .form-note{font-size:12.5px;color:var(--tx-3);margin-top:12px;line-height:1.7;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;background:#080B0F;border-top:1px solid var(--line);
    padding:56px 0 26px;margin-top:24px;z-index:1;
  }
  .site-footer::before{
    content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
    background:linear-gradient(90deg, rgba(0,224,138,.85), rgba(0,224,138,.12) 46%, rgba(0,224,138,0) 82%);
  }
  .site-footer .wrap{position:relative;z-index:2;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;} }
  .footer-title{font-size:14px;color:var(--c-primary);letter-spacing:.06em;margin:0 0 14px;font-weight:600;}
  .footer-text{color:var(--tx-2);font-size:14px;line-height:1.85;max-width:34em;}
  .footer-links{display:flex;flex-direction:column;gap:8px;}
  .footer-links a{
    color:var(--tx-2);font-size:14px;min-height:28px;display:inline-flex;align-items:center;
    transition:color .18s var(--ease),transform .18s var(--ease);
  }
  .footer-links a:hover{color:var(--c-primary);transform:translateX(3px);}
  .footer-contact div{font-size:14px;color:var(--tx-2);margin-bottom:10px;line-height:1.7;}
  .footer-contact span{display:inline-block;min-width:72px;color:var(--tx-3);margin-right:8px;}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;align-items:center;
    border-top:1px solid var(--line);margin-top:38px;padding-top:20px;font-size:13px;color:var(--tx-3);
  }
  .footer-bottom p{margin:0;}
  .footer-bottom a{color:var(--tx-3);transition:color .18s var(--ease);}
  .footer-bottom a:hover{color:var(--c-primary);}

  .reveal{opacity:0;transform:translateY(14px);animation:rise .6s var(--ease) forwards;}
  @keyframes rise{to{opacity:1;transform:none;}}
  .d1{animation-delay:.05s;} .d2{animation-delay:.14s;} .d3{animation-delay:.22s;}

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *,*::before,*::after{
      animation-duration:.001ms !important;animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
    }
    .reveal{opacity:1;transform:none;}
    .stage-card:hover,.track-node:hover,.metric-card:hover,.more-card:hover,.btn:hover{transform:none;}
    .stage-card:hover .stage-media img{transform:none;}
  }

/* roulang page: category3 */
:root{
  --bg:#0A0E13;
  --panel:#111823;
  --surface:#151E29;
  --line:#1E2A36;
  --line-soft:rgba(255,255,255,.08);
  --primary:#00E08A;
  --accent:#FF6A2B;
  --lemon:#C9F227;
  --purple:#7B61FF;
  --cyan:#22D3EE;
  --txt:#E9F1F6;
  --txt-2:#9AAAB8;
  --txt-3:#64748B;
  --r-card:14px;
  --r-btn:10px;
  --shadow-card: inset 0 1px 0 rgba(255,255,255,.05), 0 20px 44px -28px rgba(0,0,0,.9);
  --glow: 0 0 0 1px rgba(0,224,138,.35), 0 0 26px -8px rgba(0,224,138,.5);
  --ease: cubic-bezier(.22,.61,.36,1);
}

html{scroll-behavior:smooth;}
html body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
*{box-sizing:border-box;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:8px;}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#0A0E13;}
::-webkit-scrollbar-thumb{background:#22303D;border-radius:8px;border:2px solid #0A0E13;}
::-webkit-scrollbar-thumb:hover{background:#2E4050;}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){ .wrap{padding:0 32px;} }

.num{font-variant-numeric:tabular-nums;letter-spacing:.04em;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(10,14,19,.85);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.9),rgba(0,224,138,0) 62%);
  pointer-events:none;
}
.site-header.scrolled{box-shadow:0 18px 40px -30px rgba(0,0,0,.95);background:rgba(10,14,19,.94);}
.header-inner{height:64px;display:flex;align-items:center;gap:16px;}
@media (min-width:768px){ .header-inner{height:72px;gap:22px;} }

.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--primary);
  background:linear-gradient(150deg,rgba(0,224,138,.18),rgba(0,224,138,.02));
  border:1px solid rgba(0,224,138,.35);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--txt);}
.brand-sub{font-size:10px;letter-spacing:.22em;color:var(--txt-3);text-transform:uppercase;}

.nav-links{display:none;}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
}
.nav-link{
  position:relative;font-size:15px;color:var(--txt-2);padding:6px 0;min-height:44px;
  display:inline-flex;align-items:center;transition:color .18s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:8px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-link:hover{color:var(--txt);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--primary);text-shadow:0 0 12px rgba(0,224,138,.55);}
.nav-link.active::after{transform:scaleX(1);}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
@media (min-width:1024px){ .header-actions{margin-left:24px;} }
.header-cta{display:none;}
@media (min-width:768px){ .header-cta{display:inline-flex;} }

.menu-toggle{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:var(--panel);color:var(--txt);display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.menu-toggle:hover{border-color:rgba(0,224,138,.5);color:var(--primary);}
.menu-toggle svg{width:20px;height:20px;}
@media (min-width:1024px){ .menu-toggle{display:none;} }

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line-soft);
  background:rgba(8,11,15,.98);
  padding:14px 20px 26px;
}
.mobile-drawer.open{display:block;}
.drawer-link{
  display:block;position:relative;font-size:18px;color:var(--txt-2);
  padding:14px 0 14px 16px;border-bottom:1px solid var(--line-soft);min-height:44px;
  transition:color .18s var(--ease);
}
.drawer-link::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transition:opacity .18s var(--ease);
}
.drawer-link.active{color:var(--primary);text-shadow:0 0 14px rgba(0,224,138,.5);}
.drawer-link.active::before{opacity:1;box-shadow:0 0 16px rgba(0,224,138,.7);}
.drawer-link:hover{color:var(--txt);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  cursor:pointer;text-align:center;
}
.btn-primary{background:var(--primary);color:#06121A;}
.btn-primary:hover{background:#25EF9F;transform:translateY(-1px);box-shadow:var(--glow);}
.btn-primary:active{background:#00C97C;transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:rgba(0,224,138,.5);color:var(--primary);}
.btn-ghost:hover{background:rgba(0,224,138,.1);transform:translateY(-1px);box-shadow:var(--glow);}
.btn-ghost:active{background:rgba(0,224,138,.18);transform:translateY(0);}
.btn-text{background:none;color:var(--txt-2);padding:10px 0;min-height:44px;}
.btn-text:hover{color:var(--primary);}
.btn-text .arrow{transition:transform .18s var(--ease);}
.btn-text:hover .arrow{transform:translateX(4px);}
.btn-sm{padding:10px 18px;font-size:14px;min-height:44px;}
.btn[disabled],.btn.disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- chip / 徽章 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;
  padding:6px 12px;border-radius:999px;border:1px solid rgba(0,224,138,.4);
  background:rgba(0,224,138,.1);color:var(--primary);white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.chip::before{content:"";width:2px;height:12px;border-radius:2px;background:var(--primary);}
.chip:hover{background:var(--primary);color:#06121A;}
.chip:hover::before{background:#06121A;}
.chip-plain{border-color:var(--line);background:transparent;color:var(--txt-2);}
.chip-plain::before{display:none;}
.chip-orange{border-color:rgba(255,106,43,.45);background:rgba(255,106,43,.12);color:#FF8B58;}
.chip-orange::before{background:var(--accent);}
.chip-purple{border-color:rgba(123,97,255,.45);background:rgba(123,97,255,.12);color:#A79BFF;}
.chip-purple::before{background:var(--purple);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:112px 0 64px;
  background-color:#080B0F;
  background-image:
    linear-gradient(90deg,rgba(10,14,19,.95) 0%,rgba(10,14,19,.78) 44%,rgba(10,14,19,.28) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center right;
  overflow:hidden;
}
@media (min-width:768px){ .hero{padding:140px 0 84px;} }
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:68px 68px;
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.95),transparent 70%);
  mask-image:linear-gradient(90deg,rgba(0,0,0,.95),transparent 70%);
  opacity:.55;
}
.hero::after{
  content:"";position:absolute;top:-20%;right:6%;width:220px;height:150%;
  background:linear-gradient(180deg,rgba(0,224,138,.16),rgba(0,224,138,0));
  transform:rotate(16deg);pointer-events:none;filter:blur(1px);
}
.hero-inner{position:relative;z-index:2;max-width:780px;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:22px;flex-wrap:wrap;}
.crumbs a{color:var(--txt-2);transition:color .18s var(--ease);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{opacity:.5;}
.crumbs .current{color:var(--primary);}

.hero h1{
  margin:16px 0 0;font-size:clamp(28px,4.2vw,52px);font-weight:800;line-height:1.15;
  letter-spacing:-.01em;color:#F4FAFD;
}
.hero h1 .accent{color:var(--primary);text-shadow:0 0 24px rgba(0,224,138,.4);}
.hero-lead{margin:18px 0 0;font-size:clamp(15px,1.5vw,17px);line-height:1.85;color:var(--txt-2);max-width:42em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

.hero-stats{
  display:grid;grid-template-columns:repeat(2,1fr);
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
}
.hero-stat{padding:0 16px;border-left:1px solid var(--line-soft);}
.hero-stat:first-child{border-left:0;padding-left:0;}
.hero-stat:nth-child(odd){border-left:0;padding-left:0;}
.hero-stat:nth-child(n+3){margin-top:18px;padding-top:18px;border-top:1px solid var(--line-soft);}
.hero-stat .val{display:block;font-size:26px;font-weight:800;color:var(--primary);line-height:1.25;}
.hero-stat .lbl{display:block;font-size:12.5px;color:var(--txt-3);letter-spacing:.06em;margin-top:4px;}
@media (min-width:768px){
  .hero-stats{grid-template-columns:repeat(4,1fr);}
  .hero-stat:nth-child(n+3){margin-top:0;padding-top:0;border-top:0;}
  .hero-stat:nth-child(odd){border-left:1px solid var(--line-soft);padding-left:16px;}
  .hero-stat:first-child{border-left:0;padding-left:0;}
  .hero-stat .val{font-size:30px;}
}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0;}
@media (min-width:768px){ .section{padding:88px 0;} }
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:32px;}
.section-head h2{
  position:relative;margin:0;padding-left:16px;
  font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.005em;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;
  background:var(--primary);box-shadow:0 0 18px rgba(0,224,138,.55);
}
.section-desc{margin:10px 0 0;color:var(--txt-2);font-size:15px;max-width:42em;}
.band{background:var(--panel);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}

/* ---------- 指标卡组 ---------- */
.metric-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){ .metric-grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .metric-grid{grid-template-columns:repeat(4,1fr);} }
.metric-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px 24px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  overflow:hidden;
}
.metric-card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--primary),rgba(0,224,138,0));
  opacity:.75;
}
.metric-card:hover{transform:translateY(-2px);border-color:rgba(0,224,138,.45);box-shadow:var(--glow);}
.metric-card .m-val{font-size:34px;font-weight:800;line-height:1.1;color:var(--primary);}
.metric-card .m-unit{font-size:13px;color:var(--txt-3);margin-left:6px;letter-spacing:.06em;}
.metric-card h3{margin:14px 0 8px;font-size:18px;font-weight:600;color:var(--txt);}
.metric-card p{margin:0;font-size:14px;line-height:1.8;color:var(--txt-2);}
.metric-card .m-tag{
  display:inline-block;margin-top:16px;font-size:12px;letter-spacing:.08em;color:var(--txt-3);
  border-top:1px dashed var(--line);padding-top:12px;width:100%;
}

/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){ .split{grid-template-columns:7fr 5fr;gap:32px;} }
.media-frame{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  background:var(--panel);aspect-ratio:16/9;
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.media-frame:hover img{transform:scale(1.03);}
.media-frame .media-chip{position:absolute;left:14px;bottom:14px;}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(10,14,19,0) 45%,rgba(10,14,19,.72) 100%);
}

/* ---------- 对比行卡 ---------- */
.cmp-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.cmp-head{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:16px 24px;background:rgba(21,30,41,.9);border-bottom:1px solid var(--line-soft);
  font-size:13px;letter-spacing:.08em;color:var(--txt-3);
}
.cmp-row{
  display:grid;grid-template-columns:1fr;gap:10px;
  padding:22px 24px;border-top:1px solid var(--line-soft);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);position:relative;
}
.cmp-row:first-of-type{border-top:0;}
.cmp-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);
  opacity:0;transition:opacity .2s var(--ease);
}
.cmp-row:hover{background:var(--surface);}
.cmp-row:hover::before{opacity:1;box-shadow:0 0 18px rgba(0,224,138,.6);}
@media (min-width:768px){ .cmp-row{grid-template-columns:236px 1fr;gap:28px;align-items:start;} }
.cmp-label h3{margin:0 0 8px;font-size:18px;font-weight:600;color:var(--txt);}
.cmp-label .chip{font-size:11.5px;}
.cmp-body p{margin:0 0 10px;font-size:15px;line-height:1.85;color:var(--txt-2);}
.cmp-body p:last-child{margin-bottom:0;}
.cmp-body strong{color:var(--txt);font-weight:600;}
.cmp-body .kv{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:12px;}
.cmp-body .kv span{font-size:13px;color:var(--txt-3);}
.cmp-body .kv b{color:var(--cyan);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:.04em;}

/* ---------- 选型建议列表 ---------- */
.advice-list{border-top:1px solid var(--line);}
.advice-row{
  display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;
  padding:24px 4px;border-bottom:1px solid var(--line-soft);
  transition:background .2s var(--ease),padding-left .2s var(--ease);
}
.advice-row:hover{background:var(--panel);padding-left:16px;}
.advice-no{
  font-size:24px;font-weight:800;line-height:1.2;color:var(--primary);
  min-width:44px;opacity:.9;
}
.advice-row:hover .advice-no{text-shadow:0 0 18px rgba(0,224,138,.55);}
.advice-row h3{margin:0 0 6px;font-size:18px;font-weight:600;color:var(--txt);}
.advice-row p{margin:0;font-size:15px;line-height:1.85;color:var(--txt-2);max-width:46em;}
@media (min-width:768px){ .advice-row{grid-template-columns:auto 1fr;gap:26px;padding:28px 4px;} .advice-no{font-size:28px;} }

/* ---------- 侧栏提示卡 ---------- */
.note-card{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--lemon);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-card);
}
.note-card h3{margin:0 0 12px;font-size:17px;font-weight:600;color:var(--txt);}
.note-card ul{margin:0;padding:0;list-style:none;}
.note-card li{position:relative;padding-left:18px;margin-bottom:12px;font-size:14.5px;line-height:1.8;color:var(--txt-2);}
.note-card li:last-child{margin-bottom:0;}
.note-card li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--primary);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  position:relative;background:var(--panel);border:1px solid var(--line);border-radius:12px;
  overflow:hidden;transition:border-color .2s var(--ease);
}
.faq-item:hover{border-color:rgba(0,224,138,.4);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:56px;padding:16px 20px;font-size:16px;font-weight:600;color:var(--txt);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:24px;line-height:1;color:var(--primary);
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item[open]::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);
  box-shadow:0 0 18px rgba(0,224,138,.6);
}
.faq-body{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--txt-2);}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:18px;border:1px solid rgba(0,224,138,.28);
  background:linear-gradient(125deg,rgba(0,224,138,.13) 0%,rgba(17,24,35,.95) 52%,rgba(17,24,35,.98) 100%);
  padding:34px 24px;box-shadow:var(--shadow-card);
}
@media (min-width:768px){ .cta-panel{padding:48px 44px;} }
.cta-grid{display:grid;grid-template-columns:1fr;gap:30px;}
@media (min-width:1024px){ .cta-grid{grid-template-columns:1fr 1fr;gap:48px;align-items:start;} }
.cta-panel h2{margin:0 0 14px;font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;}
.cta-panel p{margin:0;color:var(--txt-2);font-size:15.5px;line-height:1.85;max-width:40em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
.field label{font-size:13px;color:var(--txt-2);letter-spacing:.02em;}
.field input,.field textarea{
  width:100%;background:#0F1620;border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;color:var(--txt);font-size:15px;min-height:44px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  font-family:inherit;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.8;}
.field input::placeholder,.field textarea::placeholder{color:#556373;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,224,138,.18);}
.field .hint{font-size:12.5px;color:var(--txt-3);}

.toast{
  position:fixed;right:20px;bottom:24px;z-index:120;
  display:inline-flex;align-items:center;gap:10px;
  background:#0F1620;border:1px solid rgba(0,224,138,.45);color:var(--txt);
  padding:12px 18px;border-radius:12px;font-size:14px;
  box-shadow:0 20px 40px -24px rgba(0,0,0,.95);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.toast.show{opacity:1;transform:translateY(0);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#080B0F;border-top:1px solid var(--line-soft);position:relative;padding:56px 0 24px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.9),rgba(0,224,138,0) 62%);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;} }
.footer-text{margin:0;font-size:14px;line-height:1.85;color:var(--txt-3);max-width:34em;}
.footer-title{margin:0 0 16px;font-size:14px;font-weight:600;color:var(--primary);letter-spacing:.06em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--txt-2);transition:color .18s var(--ease);min-height:32px;display:inline-flex;align-items:center;}
.footer-links a:hover{color:var(--primary);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--txt-2);}
.footer-contact div{display:flex;gap:10px;flex-wrap:wrap;}
.footer-contact span{color:var(--txt-3);min-width:64px;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--txt-3);
}
.footer-bottom p{margin:0;}
.footer-bottom a{color:var(--txt-2);transition:color .18s var(--ease);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    transition-duration:.001ms !important;
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
  }
  .metric-card:hover,.cmp-row:hover,.advice-row:hover,.media-frame:hover img,
  .btn:hover{transform:none !important;}
}

/* roulang page: category4 */
:root{
  --primary:#00E08A;
  --accent:#FF6A2B;
  --violet:#7B61FF;
  --lemon:#C9F227;
  --cyan:#22D3EE;
  --bg:#0A0E13;
  --panel:#111823;
  --surface:#151E29;
  --line:#1E2A36;
  --line-soft:rgba(255,255,255,.08);
  --text:#E9F1F6;
  --text-2:#9AAAB8;
  --text-3:#64748B;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card: inset 0 1px 0 rgba(255,255,255,.05), 0 20px 44px -28px rgba(0,0,0,.9);
  --glow: 0 0 0 1px rgba(0,224,138,.35), 0 0 26px -8px rgba(0,224,138,.5);
  --ease: cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  padding-top:64px;
  overflow-x:hidden;
}
@media(min-width:768px){body{padding-top:72px}}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

.wrap{max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.wrap{padding-left:32px;padding-right:32px}}

/* ---------- 顶栏 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(10,14,19,.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.65),rgba(0,224,138,.12) 38%,transparent 70%);
  pointer-events:none;
}
.site-header.scrolled{box-shadow:0 14px 34px -22px rgba(0,0,0,.95);background:rgba(10,14,19,.94)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
@media(min-width:768px){.header-inner{height:72px}}

.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  color:#06121A;background:linear-gradient(150deg,#00E08A,#22D3EE);
  box-shadow:0 0 0 1px rgba(0,224,138,.35),0 0 22px -10px rgba(0,224,138,.9);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.01em}
.brand-sub{font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--text-3)}

.nav-links{display:none}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:2px}
}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 12px;font-size:15px;color:var(--text-2);
  border-radius:8px;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);text-shadow:0 0 18px rgba(0,224,138,.55)}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(0,224,138,.8)}

.header-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;gap:4px;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.menu-toggle:hover{border-color:rgba(0,224,138,.5);background:rgba(0,224,138,.08)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px}
@media(min-width:1024px){.menu-toggle{display:none}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#06121A}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--glow);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-outline{border-color:rgba(0,224,138,.55);color:var(--primary);background:transparent}
.btn-outline:hover{background:rgba(0,224,138,.1);transform:translateY(-1px)}
.btn-text{color:var(--text-2);padding:8px 4px;min-height:auto;font-weight:600}
.btn-text:hover{color:var(--primary)}
.btn-text .arrow{transition:transform .18s var(--ease)}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:#0A0E13;
  transform:translateX(100%);transition:transform .24s var(--ease);
  display:flex;flex-direction:column;padding:20px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:20px;color:var(--text-2);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.drawer-close:hover{border-color:rgba(0,224,138,.5);color:var(--primary)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-link{
  position:relative;display:flex;align-items:center;
  padding:15px 16px;font-size:18px;border-radius:10px;color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.drawer-link:hover{background:var(--surface);color:var(--text)}
.drawer-link.active{color:var(--primary);background:rgba(0,224,138,.07)}
.drawer-link.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 12px rgba(0,224,138,.85);
}
.drawer-cta{margin-top:24px;width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-color:#0A0E13;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,14,19,.96) 0%,rgba(10,14,19,.88) 42%,rgba(10,14,19,.42) 78%,rgba(10,14,19,.28) 100%);
}
.hero-grid{
  position:absolute;inset:0;opacity:.12;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,transparent,#000 35%,transparent);
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 35%,transparent);
}
.hero-beam{
  position:absolute;top:-20%;right:-8%;width:52%;height:150%;
  background:linear-gradient(120deg,rgba(0,224,138,.16),rgba(0,224,138,0) 62%);
  transform:skewX(-14deg);pointer-events:none;
}
.hero-inner{position:relative;padding:56px 0 36px}
@media(min-width:768px){.hero-inner{padding:84px 0 52px}}
.hero-title{
  font-size:clamp(28px,4.2vw,52px);font-weight:800;line-height:1.15;
  letter-spacing:-.01em;margin:18px 0 0;max-width:16em;
}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:38em}
@media(min-width:768px){.hero-sub{font-size:17px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0;margin-top:36px;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:rgba(17,24,35,.72);backdrop-filter:blur(6px);
  overflow:hidden;
}
@media(min-width:768px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat{padding:16px 18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat-value{font-size:24px;font-weight:800;color:var(--primary);line-height:1.2}
.stat-label{font-size:13px;color:var(--text-3);margin-top:4px}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:96px 0}}
.section-panel{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
@media(min-width:768px){.section-head{margin-bottom:40px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(0,224,138,.8)}
.h2{
  position:relative;font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.3;
  padding-left:16px;margin-top:10px;
}
.h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 14px rgba(0,224,138,.7);
}
.section-desc{margin-top:12px;color:var(--text-2);font-size:15px;max-width:42em}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding-top:20px}
.crumbs a{color:var(--text-3);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{opacity:.45}
.crumbs .current{color:var(--primary);font-weight:600}

/* ---------- chip / 标签 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.08em;
  border:1px solid rgba(0,224,138,.4);background:rgba(0,224,138,.1);color:var(--primary);
}
.chip::before{content:"";width:2px;height:12px;border-radius:2px;background:currentColor}
.chip-plain{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;color:var(--text-3);border:1px solid var(--line);
}
.chip-cat{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12px;letter-spacing:.12em;
  border:1px solid rgba(0,224,138,.45);background:rgba(0,224,138,.12);color:var(--primary);
  text-transform:uppercase;
}

.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  --tag:#00E08A;
  position:relative;
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:8px 18px 8px 16px;border-radius:999px;
  font-size:14px;color:var(--text-2);
  border:1px solid var(--line);background:var(--surface);
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.tag::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:18px;border-radius:3px;background:var(--tag)}
.tag:hover{color:#06121A;background:var(--tag);border-color:var(--tag);transform:translateY(-2px)}
.tag:hover::before{background:#06121A}
.tag .count{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
.tag:hover .count{color:rgba(6,18,26,.7)}
.tag.c1{--tag:#00E08A}
.tag.c2{--tag:#FF6A2B}
.tag.c3{--tag:#22D3EE}

/* ---------- 瀑布流卡片 ---------- */
.masonry{column-count:1;column-gap:24px}
@media(min-width:768px){.masonry{column-count:2}}
@media(min-width:1024px){.masonry{column-count:3}}
.m-card{
  break-inside:avoid;-webkit-column-break-inside:avoid;
  margin-bottom:24px;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.m-card:hover{transform:translateY(-2px);border-color:rgba(0,224,138,.55);box-shadow:var(--glow)}
.m-cover{position:relative;overflow:hidden;background:#111823}
.m-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.m-card:hover .m-cover img{transform:scale(1.03)}
.m-cover.r16x9{aspect-ratio:16/9}
.m-cover.r4x3{aspect-ratio:4/3}
.m-cover.r1x1{aspect-ratio:1/1}
.m-cover.r3x4{aspect-ratio:3/4}
.m-body{padding:18px}
.m-title{font-size:18px;font-weight:600;line-height:1.5}
.m-desc{margin-top:8px;font-size:14px;line-height:1.75;color:var(--text-2)}
.m-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.m-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.m-foot .more{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.m-card:hover .m-foot .more .arrow{transform:translateX(3px)}
.m-foot .more .arrow{transition:transform .18s var(--ease)}

/* ---------- 推荐列表行卡 ---------- */
.rec-list{display:grid;gap:12px}
@media(min-width:1024px){.rec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px}}
.rec-item{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;min-height:64px;
  border:1px solid var(--line);border-radius:12px;background:var(--panel);
  transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.rec-item:hover{background:var(--surface);border-color:rgba(0,224,138,.5);transform:translateY(-2px)}
.rec-left{display:flex;align-items:center;gap:14px;min-width:0}
.rec-index{font-size:14px;font-weight:700;color:var(--primary);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.rec-title{font-size:15px;font-weight:600;line-height:1.5;transition:color .18s var(--ease)}
.rec-item:hover .rec-title{color:var(--primary)}
.rec-meta{font-size:12px;color:var(--text-3);margin-top:4px}
.rec-arrow{color:var(--text-3);flex-shrink:0;transition:transform .18s var(--ease),color .18s var(--ease)}
.rec-item:hover .rec-arrow{color:var(--primary);transform:translateX(3px)}

/* ---------- FAQ ---------- */
.faq-panel{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--panel);overflow:hidden;box-shadow:var(--shadow-card);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 20px 14px 22px;
  font-size:16px;font-weight:600;color:var(--text);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transition:opacity .18s var(--ease);
  box-shadow:0 0 12px rgba(0,224,138,.85);
}
.faq-item summary:hover{background:var(--surface)}
.faq-item[open] summary{color:var(--primary);background:rgba(0,224,138,.05)}
.faq-item[open] summary::before{opacity:1}
.faq-sign{
  flex-shrink:0;width:22px;height:22px;display:grid;place-items:center;
  color:var(--primary);font-size:18px;line-height:1;
  transition:transform .2s var(--ease);
}
.faq-item[open] .faq-sign{transform:rotate(45deg)}
.faq-answer{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:linear-gradient(120deg,#111823 0%,#0E1620 58%,#101C1A 100%);
  padding:28px 22px;box-shadow:var(--shadow-card);
}
@media(min-width:768px){.cta-panel{padding:40px}}
.cta-panel::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,224,138,.22),transparent 68%);pointer-events:none;
}
.cta-inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px}
.cta-title{font-size:clamp(20px,2.2vw,28px);font-weight:700;line-height:1.35}
.cta-desc{margin-top:10px;color:var(--text-2);font-size:15px;max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- toast ---------- */
.toast{
  position:fixed;right:20px;bottom:24px;z-index:90;
  padding:12px 20px;border-radius:12px;font-size:14px;
  background:var(--surface);border:1px solid rgba(0,224,138,.45);color:var(--primary);
  box-shadow:var(--glow);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.toast.show{opacity:1;transform:translateY(0)}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:#0A0E13;
  position:relative;
  padding:48px 0 24px;
  margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.6),rgba(0,224,138,.1) 40%,transparent 75%);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 40px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr}}
.footer-text{font-size:14px;line-height:1.8;color:var(--text-2);max-width:30em}
.footer-title{font-size:14px;font-weight:700;color:var(--primary);letter-spacing:.06em;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-2)}
.footer-contact span{display:inline-block;min-width:72px;color:var(--text-3);font-size:13px}
.footer-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);transition:color .18s var(--ease)}
.footer-bottom a:hover{color:var(--primary)}

.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:12px;top:12px;z-index:120;background:var(--primary);color:#06121A;padding:10px 16px;border-radius:8px}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .m-card:hover,.rec-item:hover,.tag:hover,.btn:hover{transform:none !important}
  .m-card:hover .m-cover img{transform:none !important}
}

/* roulang page: category5 */
:root{
  --primary:#00E08A;
  --primary-soft:rgba(0,224,138,.1);
  --accent:#FF6A2B;
  --violet:#7B61FF;
  --lemon:#C9F227;
  --cyan:#22D3EE;
  --bg:#0A0E13;
  --panel:#111823;
  --surface:#151E29;
  --line:#1E2A36;
  --line-soft:rgba(255,255,255,.08);
  --text:#E9F1F6;
  --text-2:#9AAAB8;
  --text-3:#64748B;
  --r-card:14px;
  --r-btn:10px;
  --r-input:12px;
  --shadow-card:inset 0 1px 0 rgba(255,255,255,.05), 0 20px 44px -28px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(0,224,138,.35), 0 0 26px -8px rgba(0,224,138,.5);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:rgba(0,224,138,.3);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A0E13}
::-webkit-scrollbar-thumb{background:#1E2A36;border-radius:8px;border:2px solid #0A0E13}
::-webkit-scrollbar-thumb:hover{background:#2A3A4A}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
@media (min-width:768px){.wrap{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(10,14,19,.85);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
  border-bottom:1px solid transparent;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.9),rgba(0,224,138,0) 62%);
}
.site-header.is-scrolled{box-shadow:0 16px 36px -26px rgba(0,0,0,.98);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
@media (min-width:768px){.header-inner{height:72px}}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  color:var(--primary);background:var(--primary-soft);
  border:1px solid rgba(0,224,138,.35);box-shadow:var(--glow);flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.02em;color:#fff}
.brand-sub{font-size:11px;letter-spacing:.18em;color:var(--text-3);text-transform:uppercase}
.nav-links{display:none}
@media (min-width:1024px){.nav-links{display:flex;align-items:center;gap:4px}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;
  font-size:15px;color:var(--text-2);border-radius:var(--r-btn);
  transition:color .18s ease-out,background-color .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  background:var(--primary);border-radius:2px;box-shadow:0 0 12px rgba(0,224,138,.7);
  transform:scaleX(0);transform-origin:center;transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:#fff;text-shadow:0 0 14px rgba(0,224,138,.6)}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:inline-grid;place-items:center;width:44px;height:44px;border-radius:var(--r-btn);
  background:var(--surface);border:1px solid var(--line);color:var(--text);cursor:pointer;
  transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;
}
.nav-toggle:hover{border-color:rgba(0,224,138,.5);color:#fff}
.nav-toggle:active{background:rgba(0,224,138,.12)}
@media (min-width:1024px){.nav-toggle{display:none}}
.drawer{
  position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;
  padding:88px 22px 32px;gap:4px;
  background:rgba(10,14,19,.98);
  opacity:0;transform:translateY(-10px);pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out;
}
.drawer.is-open{opacity:1;transform:none;pointer-events:auto}
.drawer-link{
  display:flex;align-items:center;min-height:56px;padding:0 14px;
  font-size:18px;font-weight:600;color:var(--text-2);
  border-left:3px solid transparent;border-bottom:1px solid var(--line-soft);
  transition:color .18s ease-out,background-color .18s ease-out;
}
.drawer-link:hover{color:#fff;background:rgba(255,255,255,.03)}
.drawer-link.active{
  color:#fff;border-left-color:var(--primary);
  box-shadow:inset 22px 0 34px -26px rgba(0,224,138,.95);
}
.drawer-cta{margin-top:18px}

/* ---------- buttons / chips ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--primary);color:#06121A}
.btn-primary:hover{background:#3BF0AC;transform:translateY(-1px);box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 3px 10px rgba(0,0,0,.25)}
.btn-outline{background:transparent;border-color:rgba(0,224,138,.45);color:#CFFBEA}
.btn-outline:hover{background:var(--primary-soft);color:#fff;transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-quiet{background:transparent;border-color:var(--line);color:var(--text-2)}
.btn-quiet:hover{border-color:rgba(0,224,138,.45);color:#fff}
.btn-text{background:none;border:0;padding:0;min-height:auto;color:var(--primary);font-weight:600}
.btn-text .arrow{transition:transform .18s ease-out}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;line-height:1.6;
  background:var(--primary-soft);border:1px solid rgba(0,224,138,.35);color:#8AF3C6;
}
.chip::before{content:"";width:2px;height:12px;border-radius:2px;background:var(--primary)}
.chip-plain{
  display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;color:var(--text-2);border:1px solid var(--line);
}
.chip-violet{background:rgba(123,97,255,.12);border-color:rgba(123,97,255,.45);color:#C3B8FF}
.chip-violet::before{background:var(--violet)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:104px 0 52px;background:var(--bg)}
@media (min-width:768px){.hero{padding:148px 0 76px}}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.52;
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,14,19,.97) 0%,rgba(10,14,19,.9) 44%,rgba(10,14,19,.32) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:68px 68px;
  -webkit-mask-image:linear-gradient(90deg,#000,transparent 78%);
  mask-image:linear-gradient(90deg,#000,transparent 78%);
}
.hero-beam{
  position:absolute;top:-25%;left:-12%;width:520px;height:150%;
  background:linear-gradient(90deg,rgba(0,224,138,0),rgba(0,224,138,.13),rgba(0,224,138,0));
  transform:rotate(14deg);filter:blur(7px);
}
.hero-inner{position:relative;z-index:2;max-width:900px}
.hero h1{
  margin:20px 0 0;
  font-size:clamp(28px,4.2vw,52px);
  font-weight:800;line-height:1.15;letter-spacing:.01em;
}
.hero-sub{
  margin-top:18px;max-width:42em;font-size:16px;line-height:1.9;color:var(--text-2);
}
@media (min-width:768px){.hero-sub{font-size:17px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;margin-top:38px;padding-top:22px;border-top:1px solid var(--line);
}
@media (min-width:768px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat{padding-left:14px}
@media (min-width:768px){.hero-stats .stat+.stat{border-left:1px solid var(--line)}}
.stat b{
  display:block;font-size:26px;font-weight:800;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.3;
}
.stat span{display:block;font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:88px 0}}
.section-alt{background:linear-gradient(180deg,rgba(17,24,35,.85),rgba(10,14,19,0))}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.sec-title{
  position:relative;padding-left:16px;
  font-size:clamp(22px,2.6vw,34px);font-weight:700;line-height:1.3;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 18px rgba(0,224,138,.55);
}
.sec-desc{margin-top:12px;max-width:44em;font-size:15px;line-height:1.85;color:var(--text-2)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:6px 0 20px;font-size:13px;color:var(--text-3)}
.crumbs a{transition:color .18s ease-out}
.crumbs a:hover{color:var(--primary)}
.crumbs .current{color:var(--primary)}
.crumbs .sep{opacity:.45}

/* ---------- split layout ---------- */
.split{display:grid;gap:26px;grid-template-columns:1fr}
@media (min-width:1024px){.split{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:34px;align-items:start}}
.lead-copy p{font-size:16px;line-height:1.9;color:var(--text-2);max-width:42em}
.lead-copy p+p{margin-top:14px}
.path-list{display:flex;flex-direction:column;gap:12px;margin-top:26px}
.path-row{
  display:flex;gap:16px;align-items:flex-start;padding:16px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;
}
.path-row:hover{transform:translateY(-2px);background:var(--surface);border-color:rgba(0,224,138,.45)}
.path-row .num{
  font-size:20px;font-weight:800;color:var(--primary);line-height:1.25;
  font-variant-numeric:tabular-nums;letter-spacing:.06em;flex:0 0 auto;
}
.path-row h3{font-size:17px;font-weight:600;color:#fff;line-height:1.5}
.path-row p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--text-2)}
.anchor-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.anchor-chip{
  display:inline-flex;align-items:center;min-height:38px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:var(--panel);
  transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
}
.anchor-chip:hover{color:#fff;border-color:rgba(0,224,138,.5);background:rgba(0,224,138,.1)}
.side-figure{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:var(--panel);box-shadow:var(--shadow-card);
}
.side-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.side-figure figcaption{padding:14px 16px;font-size:13px;line-height:1.7;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-groups{display:flex;flex-direction:column;gap:30px}
.faq-group-title{
  display:flex;align-items:center;gap:12px;
  font-size:18px;font-weight:600;color:#fff;
}
.faq-group-title::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,var(--line),transparent)}
.faq-panel{
  margin-top:14px;padding:8px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);
}
.faq-item{border-bottom:1px solid var(--line-soft)}
.faq-item:last-child{border-bottom:0}
.faq-item>summary{
  position:relative;display:flex;align-items:center;gap:14px;
  min-height:56px;padding:12px 18px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
  transition:background-color .18s ease-out,color .18s ease-out;
}
.faq-item>summary::-webkit-details-marker{display:none}
.faq-item>summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 16px rgba(0,224,138,.7);
  opacity:0;transition:opacity .18s ease-out;
}
.faq-item>summary:hover{background:var(--surface)}
.faq-item[open]>summary{color:#fff}
.faq-item[open]>summary::before{opacity:1}
.faq-index{
  flex:0 0 auto;font-size:12px;letter-spacing:.1em;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.faq-icon{position:relative;margin-left:auto;width:22px;height:22px;flex:0 0 auto;transition:transform .2s ease-out}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary);border-radius:2px}
.faq-icon::before{left:50%;top:4px;width:2px;height:14px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:4px;height:2px;width:14px;transform:translateY(-50%)}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-body{padding:2px 18px 20px 62px;font-size:15px;line-height:1.85;color:var(--text-2)}
.faq-body strong{color:#fff;font-weight:600}
.faq-note{
  margin-top:18px;padding:16px 18px;border:1px dashed var(--line);border-radius:var(--r-card);
  font-size:14px;line-height:1.8;color:var(--text-2);background:rgba(17,24,35,.6);
}

/* ---------- topic cards ---------- */
.topic-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:768px){.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.topic-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.topic-card:hover{transform:translateY(-2px);border-color:rgba(0,224,138,.45)}
.topic-media{position:relative;aspect-ratio:16/9;background:var(--surface);border-bottom:1px solid var(--line)}
.topic-media::before{
  content:"";position:absolute;left:50%;top:50%;width:32px;height:32px;
  transform:translate(-50%,-50%) rotate(45deg);
  border:2px solid rgba(0,224,138,.45);border-radius:8px;
}
.topic-media img{
  position:relative;z-index:1;width:100%;height:100%;object-fit:cover;
  transition:transform .3s ease-out;
}
.topic-card:hover .topic-media img{transform:scale(1.03)}
.topic-media .chip{position:absolute;z-index:2;left:12px;bottom:12px}
.topic-body{padding:20px;display:flex;flex-direction:column;gap:10px}
.topic-body h3{font-size:19px;font-weight:600;color:#fff;line-height:1.45}
.topic-body p{font-size:14px;line-height:1.8;color:var(--text-2)}
.topic-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.topic-meta .go{color:var(--primary);display:inline-flex;align-items:center;gap:6px;font-weight:600}
.topic-card:hover .topic-meta .go .arrow{transform:translateX(4px)}
.topic-meta .go .arrow{transition:transform .18s ease-out}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,rgba(0,224,138,.09),rgba(10,14,19,0) 55%),var(--panel);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card);
  padding:28px;
}
@media (min-width:768px){.cta-panel{padding:40px}}
.cta-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.8),rgba(0,224,138,0) 70%);
}
.cta-grid{display:grid;gap:28px;grid-template-columns:1fr}
@media (min-width:1024px){.cta-grid{grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:40px;align-items:start}}
.cta-grid h2{font-size:clamp(21px,2.3vw,30px);font-weight:700;line-height:1.35;color:#fff}
.cta-grid .cta-copy{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.ask-form{display:grid;gap:16px}
.field{display:block}
.field label{display:block;margin-bottom:8px;font-size:13px;color:var(--text-2);letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;background:#0F1620;border:1px solid var(--line);border-radius:var(--r-input);
  color:var(--text);transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field input,.field select{height:46px;padding:0 14px}
.field textarea{min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#4B5B6B}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,224,138,.18);
}
.field.is-error input,.field.is-error select{border-color:var(--accent)}
.field .err{display:none;margin-top:6px;font-size:12px;line-height:1.6;color:var(--accent)}
.field.is-error .err{display:block}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.form-hint{font-size:12px;line-height:1.7;color:var(--text-3)}
.toast{
  position:fixed;right:20px;bottom:24px;z-index:90;max-width:320px;
  padding:12px 18px;border-radius:var(--r-input);
  background:var(--panel);border:1px solid rgba(0,224,138,.45);color:var(--text);
  font-size:14px;box-shadow:var(--glow);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .2s ease-out,transform .2s ease-out;
}
.toast.is-show{opacity:1;transform:none}

/* ---------- footer ---------- */
.site-footer{position:relative;background:#080B0F;border-top:1px solid var(--line);padding:56px 0 0;margin-top:20px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(0,224,138,.85),rgba(0,224,138,0) 65%);
}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
.footer-title{font-size:14px;font-weight:600;color:var(--primary);letter-spacing:.06em;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .18s ease-out,padding-left .18s ease-out}
.footer-links a:hover{color:var(--primary);padding-left:4px}
.footer-text{margin:0;max-width:34em;font-size:14px;line-height:1.85;color:var(--text-2)}
.footer-contact div{margin-bottom:10px;font-size:14px;color:var(--text-2)}
.footer-contact span{display:inline-block;min-width:74px;color:var(--text-3)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  margin-top:40px;padding:20px 0 28px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);transition:color .18s ease-out}
.footer-bottom a:hover{color:var(--primary)}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .topic-card:hover,.path-row:hover,.btn:hover{transform:none !important}
}