/* roulang page: index */
:root{
  --bg-0:#070B14;
  --bg-1:#0B1220;
  --bg-2:#111A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --brand:#2BE3C0;
  --brand-hi:#7DF3DD;
  --brand-deep:#0E7C6B;
  --accent:#FFB020;
  --t0:#EAF2F8;
  --t1:#A7B6C8;
  --t2:#6B7C90;
  --r-card:16px;
  --r-price:20px;
  --r-btn:12px;
  --r-input:12px;
  --r-pill:999px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.08), 0 24px 48px -28px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(43,227,192,.4), 0 0 32px -12px rgba(43,227,192,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{text-decoration:underline;text-underline-offset:4px;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container-x{width:100%;max-width:var(--container);margin:0 auto;padding-left:32px;padding-right:32px;}
.section{padding-top:96px;padding-bottom:96px;}
.section-alt{background:var(--bg-1);}
.mono{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- 通用标题 ---------- */
.sec-title{
  color:var(--t0);
  font-size:30px;
  font-weight:650;
  line-height:1.3;
  letter-spacing:-.01em;
  display:flex;
  align-items:center;
}
.sec-title::before{
  content:"";
  flex:0 0 auto;
  width:4px;height:20px;
  background:var(--brand);
  border-radius:2px;
  margin-right:14px;
}
.sec-sub{color:var(--t2);font-size:15px;margin-top:12px;}
.sec-head{margin-bottom:40px;max-width:820px;}
.card-title{color:var(--t0);font-size:20px;font-weight:600;line-height:1.45;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:all 180ms var(--ease);
  text-decoration:none;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-glow{
  background:var(--brand);
  color:var(--bg-0);
  box-shadow:0 8px 30px -10px rgba(43,227,192,.6);
}
.btn-glow:hover{
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 14px 40px -10px rgba(43,227,192,.75);
  color:var(--bg-0);
}
.btn-glow:active{transform:translateY(0);background:var(--brand-deep);color:var(--t0);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--t0);
}
.btn-ghost:hover{
  border-color:rgba(43,227,192,.6);
  box-shadow:inset 0 0 24px -12px rgba(43,227,192,.8);
  transform:translateY(-2px);
  color:var(--t0);
}
.btn-ghost:active{transform:translateY(0);background:var(--bg-1);}
.btn[disabled],.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.link-more svg{transition:transform 180ms var(--ease);}
.link-more:hover svg{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  border:1px solid rgba(43,227,192,.35);
  background:rgba(43,227,192,.12);
  color:var(--brand-hi);
  font-size:13px;line-height:1.6;
  white-space:nowrap;
}
.badge-amber{
  border-color:rgba(255,176,32,.4);
  background:rgba(255,176,32,.12);
  color:var(--accent);
}
.badge-neutral{
  border-color:var(--line-strong);
  background:rgba(255,255,255,.04);
  color:var(--t1);
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  height:72px;
  display:flex;align-items:center;gap:20px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  color:var(--t0);font-size:18px;font-weight:700;letter-spacing:-.01em;
  flex:0 0 auto;
}
.logo:hover{text-decoration:none;color:var(--t0);}
.logo-mark{
  width:34px;height:34px;flex:0 0 auto;
  border-radius:10px;
  background:linear-gradient(135deg,rgba(43,227,192,.9),rgba(43,227,192,.25));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 22px -8px rgba(43,227,192,.9);
}
.logo-mark svg{width:19px;height:19px;}
.header-search{
  position:relative;
  flex:1 1 auto;
  max-width:460px;
  margin:0 auto;
}
.header-search svg{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;color:var(--t2);pointer-events:none;
}
.header-search input{
  width:100%;
  height:42px;
  padding:0 18px 0 44px;
  border-radius:var(--r-pill);
  background:var(--bg-1);
  border:1px solid var(--line);
  color:var(--t0);
  font-size:14px;
  transition:all 180ms var(--ease);
}
.header-search input::placeholder{color:var(--t2);}
.header-search input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(43,227,192,.16), 0 0 26px -10px rgba(43,227,192,.8);
  background:var(--bg-2);
}
.nav-links{display:flex;align-items:center;gap:4px;flex:0 0 auto;}
.nav-links a{
  display:inline-block;
  padding:8px 12px;
  border-radius:var(--r-pill);
  color:var(--t1);
  font-size:14px;font-weight:500;
  transition:all 180ms var(--ease);
}
.nav-links a:hover{color:var(--t0);background:rgba(255,255,255,.05);text-decoration:none;}
.nav-links a.active{color:var(--brand-hi);background:rgba(43,227,192,.12);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.header-actions .btn{padding:10px 20px;font-size:14px;}
.icon-btn{
  display:none;
  width:40px;height:40px;align-items:center;justify-content:center;
  border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line);
  color:var(--t1);cursor:pointer;
  transition:all 180ms var(--ease);
}
.icon-btn:hover{border-color:rgba(43,227,192,.6);color:var(--brand-hi);}
.icon-btn svg{width:18px;height:18px;}
.mobile-search-row{display:none;}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(7,11,20,.97);
  padding:12px 24px 24px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:block;
  padding:14px 4px;
  color:var(--t0);
  font-size:15px;
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:hover{text-decoration:none;color:var(--brand-hi);}
.mobile-drawer a.active{color:var(--brand-hi);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding-top:80px;
  padding-bottom:72px;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";
  position:absolute;
  top:-180px;right:-160px;
  width:620px;height:620px;
  background:radial-gradient(circle at 60% 40%,rgba(43,227,192,.12),rgba(43,227,192,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  color:var(--t0);
  font-size:40px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
  margin-top:20px;
}
.hero-lead{
  margin-top:20px;
  font-size:16px;
  line-height:1.85;
  color:var(--t1);
  max-width:560px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:36px;
  margin-top:40px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.hero-stat-num{
  color:var(--accent);
  font-size:28px;font-weight:700;line-height:1.2;
}
.hero-stat-label{color:var(--t2);font-size:13px;margin-top:4px;}
.hero-visual{
  position:relative;
  border-radius:var(--r-price);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
  background:linear-gradient(140deg,rgba(43,227,192,.14),rgba(11,18,32,.9));
  aspect-ratio:16/11;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";
  position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(180deg,rgba(7,11,20,0),rgba(7,11,20,.92));
}
.hero-visual-tag{
  position:absolute;
  left:20px;bottom:20px;right:20px;
  z-index:2;
  display:flex;flex-wrap:wrap;gap:8px;
}
.glass-card{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);
}
.hero-databar{
  margin-top:48px;
  padding:24px 28px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.hero-databar .item{border-left:1px solid var(--line);padding-left:20px;}
.hero-databar .item:first-child{border-left:none;padding-left:0;}
.hero-databar .k{color:var(--t0);font-size:18px;font-weight:650;}
.hero-databar .v{color:var(--t2);font-size:13px;margin-top:4px;}

/* ---------- 价值主张 ---------- */
.value-grid{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:56px;
  align-items:start;
}
.value-list li{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:16px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.value-list li:first-child{padding-top:0;}
.value-num{
  color:var(--accent);
  font-size:22px;font-weight:700;
  line-height:1.4;
}
.value-list h3{font-size:17px;font-weight:600;color:var(--t0);}
.value-list p{color:var(--t1);font-size:15px;margin-top:6px;}

/* ---------- 功能分组 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.tab{
  padding:9px 20px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--t1);
  font-size:14px;cursor:pointer;
  transition:all 180ms var(--ease);
}
.tab:hover{border-color:rgba(43,227,192,.6);color:var(--t0);}
.tab.active{background:var(--brand);border-color:var(--brand);color:var(--bg-0);font-weight:600;}
.tab-panel{display:none;}
.tab-panel.active{display:block;}
.mix-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.solid-card{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  transition:all 200ms var(--ease);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.solid-card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),rgba(43,227,192,0));
  opacity:0;transition:opacity 200ms var(--ease);
}
.solid-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(43,227,192,.3);}
.solid-card:hover::before{opacity:1;}
.solid-card:hover .card-title{color:var(--brand-hi);}
.span-2{grid-column:span 2;}
.card-icon{
  width:42px;height:42px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(43,227,192,.1);
  border:1px solid rgba(43,227,192,.28);
  color:var(--brand);
  margin-bottom:18px;
}
.card-icon svg{width:20px;height:20px;}
.card-body{color:var(--t1);font-size:15px;margin-top:10px;}
.card-params{
  margin-top:18px;
  display:flex;flex-wrap:wrap;gap:8px;
}
.param{
  font-size:13px;
  color:var(--t2);
  padding:3px 10px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.card-media{
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  margin-bottom:20px;
  background:linear-gradient(135deg,rgba(43,227,192,.16),rgba(11,18,32,.95));
}
.card-media img{width:100%;height:100%;object-fit:cover;}

/* ---------- 使用场景卡带 ---------- */
.scene-track{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.scene-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  display:flex;flex-direction:column;
  transition:all 200ms var(--ease);
}
.scene-card:hover{transform:translateY(-3px);border-color:rgba(43,227,192,.3);box-shadow:var(--shadow-hover);}
.scene-card h3{font-size:17px;font-weight:600;color:var(--t0);margin-top:14px;}
.scene-card .who{color:var(--t2);font-size:13px;margin-top:8px;}
.scene-card .gain{color:var(--t1);font-size:15px;margin-top:12px;flex:1;}
.scene-card .link-more{margin-top:18px;}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.case-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:all 200ms var(--ease);
}
.case-card:hover{border-color:rgba(43,227,192,.3);box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.case-card .card-media{border-radius:0;border:none;border-bottom:1px solid var(--line);margin-bottom:0;aspect-ratio:16/9;}
.case-inner{padding:26px;}
.case-metric{
  color:var(--accent);
  font-size:30px;font-weight:700;line-height:1.2;
  margin-top:16px;
}
.case-metric span{font-size:14px;color:var(--t2);font-weight:500;margin-left:8px;}
.quote-band{
  margin-top:24px;
  padding:28px 32px;
  border-left:3px solid var(--brand);
  background:var(--bg-1);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--t1);
  font-size:16px;
}
.quote-band cite{display:block;margin-top:12px;color:var(--t2);font-size:13px;font-style:normal;}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:stretch;}
.price-card{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-price);
  padding:30px 28px;
  display:flex;flex-direction:column;
  transition:all 200ms var(--ease);
}
.price-card:hover{transform:translateY(-3px);border-color:rgba(43,227,192,.3);}
.price-card.featured{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-color:rgba(43,227,192,.55);
  box-shadow:0 0 0 1px rgba(43,227,192,.35), 0 0 40px -14px rgba(43,227,192,.5);
}
.price-tag{
  position:absolute;top:-13px;left:28px;
  padding:3px 12px;border-radius:var(--r-pill);
  background:var(--brand);color:var(--bg-0);
  font-size:12px;font-weight:700;
}
.price-name{color:var(--t0);font-size:19px;font-weight:650;}
.price-desc{color:var(--t2);font-size:13px;margin-top:8px;min-height:42px;}
.price-amount{
  color:var(--t0);font-size:34px;font-weight:700;line-height:1.2;
  margin-top:18px;
}
.price-amount .cur{font-size:18px;margin-right:2px;color:var(--t1);}
.price-amount .unit{font-size:13px;color:var(--t2);font-weight:500;margin-left:6px;}
.price-features{margin:24px 0;padding-top:20px;border-top:1px solid var(--line);flex:1;}
.price-features li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--t1);
  padding:7px 0;
}
.price-features svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;}
.price-features .ok{color:var(--brand);}
.price-features .no{color:var(--t2);}
.price-features li.off{color:var(--t2);}
.price-foot{margin-top:14px;text-align:center;font-size:13px;}
.price-note{
  margin-top:28px;
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  padding:18px 24px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-1);
  font-size:14px;color:var(--t2);
}

/* ---------- 最新信息 ---------- */
.cms-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.cms-lead{
  grid-column:span 2;
  grid-row:span 2;
  display:flex;flex-direction:column;
}
.cms-lead .card-media{aspect-ratio:16/9;}
.cms-lead .excerpt{}
.cms-item{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  display:flex;flex-direction:column;
  transition:all 200ms var(--ease);
  overflow:hidden;
  position:relative;
}
.cms-item:hover{border-color:rgba(43,227,192,.3);box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.cms-item:hover .card-title{color:var(--brand-hi);}
.cms-title{
  font-size:18px;font-weight:600;color:var(--t0);line-height:1.5;
  margin-top:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-lead .cms-title{font-size:22px;-webkit-line-clamp:3;}
.cms-excerpt{
  color:var(--t1);font-size:15px;line-height:1.8;margin-top:12px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  flex:1;
}
.cms-meta{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  color:var(--t2);font-size:13px;
}
.cms-meta .link-more{margin-left:auto;font-size:13px;}
.empty-state{
  margin-top:8px;
  padding:48px 24px;
  text-align:center;
  border:1px dashed rgba(43,227,192,.5);
  border-radius:var(--r-card);
  background:rgba(43,227,192,.04);
}
.empty-state p{color:var(--t1);font-size:15px;}
.empty-state .link-more{margin-top:14px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  border-radius:var(--r-card);
  padding:0 24px;
  overflow:hidden;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;gap:16px;
  padding:20px 0;
  color:var(--t0);
  font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .qmark{
  color:var(--brand);
  font-size:15px;font-weight:700;
  flex:0 0 auto;
}
.faq-item summary .arrow{
  margin-left:auto;
  width:20px;height:20px;flex:0 0 auto;
  color:var(--t2);
  transition:transform 200ms var(--ease),color 200ms var(--ease);
}
.faq-item[open] summary .arrow{transform:rotate(45deg);color:var(--brand);}
.faq-answer{
  padding:0 0 22px 34px;
  color:var(--t1);
  font-size:15px;
  line-height:1.9;
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  padding:48px;
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:40px;
  align-items:center;
  border-radius:var(--r-price);
}
.cta-band h2{color:var(--t0);font-size:28px;font-weight:650;line-height:1.35;}
.cta-band p{color:var(--t1);font-size:15px;margin-top:14px;}
.cta-form{display:grid;gap:14px;}
.field{display:grid;gap:8px;}
.field label{font-size:13px;color:var(--t1);}
.field input,.field select{
  width:100%;
  height:44px;
  padding:0 14px;
  border-radius:var(--r-input);
  background:var(--bg-1);
  border:1px solid var(--line);
  color:var(--t0);
  font-size:14px;
  transition:all 180ms var(--ease);
}
.field input::placeholder{color:var(--t2);}
.field input:focus,.field select:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(43,227,192,.16);
}
.form-hint{font-size:12px;color:var(--t2);}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{color:var(--t2);font-size:14px;line-height:1.85;max-width:340px;}
.footer-col h3{color:var(--t0);font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a{color:var(--t1);font-size:14px;}
.footer-col ul a:hover{color:var(--brand-hi);text-decoration:none;}
.footer-col p{color:var(--t2);font-size:14px;line-height:1.9;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  color:var(--t2);font-size:13px;
}
.footer-bottom a{color:var(--t2);}
.footer-bottom a:hover{color:var(--brand-hi);text-decoration:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .scene-track{grid-template-columns:repeat(2,1fr);}
  .cms-grid{grid-template-columns:repeat(2,1fr);}
  .cms-lead{grid-column:span 2;grid-row:auto;}
}
@media (max-width:1023px){
  .container-x{padding-left:24px;padding-right:24px;}
  .section{padding-top:72px;padding-bottom:72px;}
  .sec-title{font-size:24px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:32px;}
  .hero-databar{grid-template-columns:repeat(2,1fr);gap:20px;}
  .hero-databar .item:nth-child(3){border-left:none;padding-left:0;}
  .value-grid{grid-template-columns:1fr;gap:36px;}
  .mix-grid{grid-template-columns:repeat(2,1fr);}
  .span-2{grid-column:span 2;}
  .price-grid{grid-template-columns:1fr;gap:24px;}
  .case-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:28px;}
  .cta-band h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-links{display:none;}
  .header-search{display:none;}
  .icon-btn{display:inline-flex;}
  .header-actions .btn{display:none;}
  .mobile-search-row{
    display:block;
    padding:10px 24px 14px;
    border-top:1px solid var(--line);
    background:rgba(7,11,20,.97);
  }
  .mobile-search-row.hidden{display:none;}
  .mobile-search-row .header-search{display:block;max-width:none;margin:0;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .container-x{padding-left:20px;padding-right:20px;}
  .section{padding-top:48px;padding-bottom:48px;}
  .sec-title{font-size:21px;}
  .sec-head{margin-bottom:28px;}
  .header-inner{height:60px;gap:10px;}
  .logo{font-size:16px;}
  .logo-mark{width:30px;height:30px;border-radius:9px;}
  .hero{padding-top:48px;padding-bottom:48px;}
  .hero h1{font-size:26px;}
  .hero-lead{font-size:15px;}
  .hero-cta .btn{width:100%;}
  .hero-stats{gap:24px;}
  .hero-stat-num{font-size:24px;}
  .hero-databar{grid-template-columns:1fr;padding:20px;}
  .hero-databar .item{border-left:none;padding-left:0;border-top:1px solid var(--line);padding-top:14px;}
  .hero-databar .item:first-child{border-top:none;padding-top:0;}
  .mix-grid{grid-template-columns:1fr;}
  .span-2{grid-column:span 1;}
  .scene-track{
    display:flex;
    overflow-x:auto;
    gap:16px;
    padding-bottom:12px;
    scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;
  }
  .scene-track::-webkit-scrollbar{height:4px;}
  .scene-track::-webkit-scrollbar-thumb{background:rgba(43,227,192,.4);border-radius:999px;}
  .scene-card{min-width:278px;scroll-snap-align:start;}
  .cms-grid{grid-template-columns:1fr;}
  .cms-lead{grid-column:span 1;}
  .case-metric{font-size:26px;}
  .quote-band{padding:22px 20px;}
  .price-amount{font-size:30px;}
  .cta-band{padding:26px;border-radius:16px;}
  .faq-item{padding:0 18px;}
  .faq-answer{padding-left:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section-alt{padding-top:48px;padding-bottom:48px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B14;--bg-1:#0B1220;--bg-2:#111A2B;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.14);
  --brand:#2BE3C0;--brand-hi:#7DF3DD;--brand-deep:#0E7C6B;
  --accent:#FFB020;
  --t0:#EAF2F8;--t1:#A7B6C8;--t2:#6B7C90;
  --r-card:16px;--r-price:20px;--r-btn:12px;--r-pill:999px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.06),0 24px 48px -28px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(43,227,192,.4),0 0 32px -12px rgba(43,227,192,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:Inter,system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body.site-body{
  margin:0;background:var(--bg-0);color:var(--t1);font-family:var(--font-cn);
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;background-color:transparent}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
button{cursor:pointer;background:none;border:1px solid transparent}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
table{border-collapse:collapse;width:100%}
::selection{background:rgba(43,227,192,.28);color:#EAF2F8}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 容器与节奏 ---------- */
.container-x{max-width:1240px;margin:0 auto;padding:0 32px;width:100%}
@media (max-width:1024px){.container-x{padding:0 24px}}
@media (max-width:768px){.container-x{padding:0 20px}}
.section{padding:96px 0}
@media (max-width:1024px){.section{padding:72px 0}}
@media (max-width:768px){.section{padding:48px 0}}
.sec-title{
  position:relative;padding-left:18px;font-size:30px;font-weight:650;color:var(--t0);
  line-height:1.3;letter-spacing:-.01em;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;background:var(--brand);
  box-shadow:0 0 12px rgba(43,227,192,.7);
}
@media (max-width:1024px){.sec-title{font-size:24px}}
@media (max-width:768px){.sec-title{font-size:21px}}
.sec-lead{margin-top:16px;font-size:16px;color:var(--t1);max-width:760px;line-height:1.85}
.eyebrow{font-family:var(--font-num);font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--t2)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,20,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--t0);letter-spacing:.01em;flex:none}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand),#0FA98F);
  box-shadow:0 8px 20px -10px rgba(43,227,192,.85);
}
.logo-mark svg{width:20px;height:20px;display:block}
.logo:hover .logo-mark{background:linear-gradient(140deg,var(--brand-hi),var(--brand))}
.header-search{position:relative;flex:1 1 320px;max-width:480px;min-width:200px}
.header-search .search-icon{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;stroke:var(--t2);fill:none;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round;pointer-events:none;transition:stroke 180ms var(--ease);
}
.header-search input{
  width:100%;height:42px;border-radius:var(--r-pill);
  background:var(--bg-1);border:1px solid var(--line);
  padding:0 18px 0 42px;color:var(--t0);outline:none;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.header-search input::placeholder{color:var(--t2)}
.header-search input:hover{border-color:var(--line-strong)}
.header-search input:focus{
  background:#0E1626;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(43,227,192,.12),0 0 26px -8px rgba(43,227,192,.6);
}
.header-search input:focus + .search-icon,.header-search:focus-within .search-icon{stroke:var(--brand)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  padding:8px 14px;border-radius:var(--r-pill);font-size:15px;color:var(--t1);
  white-space:nowrap;transition:color 180ms var(--ease),background 180ms var(--ease),box-shadow 180ms var(--ease);
}
.nav-links a:hover{color:var(--t0);background:rgba(255,255,255,.06)}
.nav-links a:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.nav-links a.active{
  color:var(--brand);background:rgba(43,227,192,.12);
  box-shadow:inset 0 0 0 1px rgba(43,227,192,.3);
}
.header-cta{flex:none;display:flex;align-items:center;gap:10px}
.header-icon-btn{
  display:none;width:40px;height:40px;border-radius:12px;
  align-items:center;justify-content:center;border:1px solid var(--line);
  background:var(--bg-1);color:var(--t1);
}
.header-icon-btn svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.header-icon-btn:hover{color:var(--brand);border-color:rgba(43,227,192,.4)}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:rgba(7,11,20,.96);
  padding:8px 0 16px;
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:block;padding:12px 4px;font-size:15px;color:var(--t1);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.active{color:var(--brand)}
@media (max-width:1023px){
  .nav-links{display:none}
  .header-icon-btn{display:inline-flex}
  .header-cta .btn-glow{display:none}
  .header-inner{gap:12px}
}
@media (max-width:767px){
  .header-inner{height:60px;gap:10px}
  .logo{font-size:16px}
  .header-search{display:none;flex:1 1 100%;max-width:none}
  .site-header.search-open .header-search{display:block}
  .site-header.search-open .header-inner{padding-bottom:14px;height:auto}
}

/* ---------- 按钮 ---------- */
.btn-glow,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-weight:600;font-size:15px;
  transition:transform 180ms var(--ease),background 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.btn-glow{background:var(--brand);color:#04120F;box-shadow:0 8px 30px -10px rgba(43,227,192,.6)}
.btn-glow:hover{background:var(--brand-hi);transform:translateY(-2px);box-shadow:0 16px 40px -10px rgba(43,227,192,.7)}
.btn-glow:active{background:var(--brand-deep);color:#EAF2F8;transform:translateY(0);box-shadow:0 6px 18px -10px rgba(43,227,192,.5)}
.btn-glow:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-glow[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--t0)}
.btn-ghost:hover{border-color:rgba(43,227,192,.6);color:var(--brand-hi);transform:translateY(-2px);box-shadow:inset 0 0 22px -12px rgba(43,227,192,.9)}
.btn-ghost:active{transform:translateY(0);border-color:var(--brand-deep)}
.btn-ghost:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px}
.link-text{color:var(--brand);font-size:14px;transition:color 180ms var(--ease)}
.link-text:hover{color:var(--brand-hi);text-decoration:underline;text-underline-offset:4px}
.link-text:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

/* ---------- 徽章 / 标签 ---------- */
.pill-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);font-size:13px;
  color:var(--brand);background:rgba(43,227,192,.1);
  border:1px solid rgba(43,227,192,.28);
}
.pill-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(43,227,192,.9)}

/* ---------- 卡片 ---------- */
.solid-card{
  position:relative;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease);
}
.solid-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
  opacity:0;transition:opacity 200ms var(--ease);
}
.solid-card:hover{border-color:rgba(43,227,192,.4);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.solid-card:hover::before{opacity:1}
.glass-card{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border:1px solid var(--line-strong);border-radius:var(--r-card);
  box-shadow:0 24px 48px -28px rgba(0,0,0,.9);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t2);margin-bottom:18px}
.breadcrumb a{color:var(--t2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span[aria-current]{color:var(--t1)}

/* ---------- 分类页 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  padding:44px 0 52px;
  background:
    linear-gradient(180deg,rgba(7,11,20,.9),rgba(7,11,20,.97)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-180px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(43,227,192,.12),transparent 62%);
  pointer-events:none;
}
.page-hero .container-x{position:relative;z-index:2}
.page-hero h1{
  font-size:40px;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--t0);
  margin:14px 0 14px;max-width:900px;
}
.hero-sub{font-size:16px;color:var(--t1);max-width:720px}
.hero-search{position:relative;margin-top:28px;max-width:100%}
.hero-search .search-icon{
  position:absolute;left:18px;top:50%;transform:translateY(-50%);
  width:20px;height:20px;stroke:var(--t2);fill:none;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round;pointer-events:none;
}
.hero-search input{
  width:100%;height:54px;border-radius:var(--r-pill);background:rgba(11,18,32,.9);
  border:1px solid var(--line);padding:0 22px 0 52px;color:var(--t0);outline:none;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.hero-search input::placeholder{color:var(--t2)}
.hero-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(43,227,192,.12),0 0 30px -10px rgba(43,227,192,.6)}
.hero-search:focus-within .search-icon{stroke:var(--brand)}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.hero-meta span{
  font-size:13px;color:var(--t1);padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-family:var(--font-num);letter-spacing:.02em;
}
@media (max-width:1024px){.page-hero h1{font-size:32px}}
@media (max-width:767px){.page-hero{padding:32px 0 40px}.page-hero h1{font-size:26px}.hero-search input{height:48px}}

/* ---------- 两栏布局 ---------- */
.layout-grid{
  display:grid;grid-template-columns:266px minmax(0,1fr);
  gap:48px;align-items:start;padding-top:56px;padding-bottom:72px;
}
@media (max-width:1023px){
  .layout-grid{grid-template-columns:1fr;gap:32px;padding-top:36px;padding-bottom:48px}
}
.toc-side{position:sticky;top:96px}
@media (max-width:1023px){.toc-side{position:static}}
.toc-card{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);padding:20px}
.toc-title{font-size:13px;letter-spacing:.12em;color:var(--t2);text-transform:uppercase;font-family:var(--font-num);margin-bottom:12px}
.toc-list{display:grid;gap:2px}
.toc-list a{
  display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--t1);
  border-left:2px solid transparent;transition:color 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease);
}
.toc-list a:hover{color:var(--t0);background:rgba(255,255,255,.05)}
.toc-list a.active{color:var(--brand);background:rgba(43,227,192,.1);border-left-color:var(--brand)}
.toc-list a:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
@media (max-width:1023px){
  .toc-list{display:flex;flex-wrap:wrap;gap:8px}
  .toc-list a{border-left:0;border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 14px;font-size:13px}
  .toc-list a.active{border-color:rgba(43,227,192,.5);background:rgba(43,227,192,.12)}
}
.side-cta{margin-top:18px;padding:22px}
.side-cta h3{font-size:17px;font-weight:600;color:var(--t0);margin-bottom:10px}
.side-cta p{font-size:14px;color:var(--t1);line-height:1.8;margin-bottom:16px}

/* ---------- 分组区块 ---------- */
.group-block{padding:36px 0;border-top:1px solid var(--line)}
.group-block:first-child{border-top:0;padding-top:0}
.group-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.group-index{
  font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--accent);padding:3px 11px;border-radius:var(--r-pill);
  border:1px solid rgba(255,176,32,.35);background:rgba(255,176,32,.08);
}
.group-desc{margin:14px 0 4px;font-size:15px;color:var(--t1);max-width:820px}
.entry-feature{
  display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.15fr);
  gap:24px;padding:24px;margin:22px 0 26px;position:relative;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.entry-feature::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
  opacity:0;transition:opacity 200ms var(--ease);
}
.entry-feature:hover{border-color:rgba(43,227,192,.4);box-shadow:var(--shadow-hover)}
.entry-feature:hover::before{opacity:1}
.entry-feature img{
  border-radius:12px;border:1px solid var(--line);
  width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;
  background:linear-gradient(135deg,#16263C,#0B1220);
}
.entry-feature h3{font-size:20px;font-weight:600;color:var(--t0);margin-bottom:10px}
.entry-feature p{font-size:15px;color:var(--t1);line-height:1.85}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.feature-tags span{
  font-family:var(--font-num);font-size:12.5px;letter-spacing:.02em;color:var(--t1);
  padding:5px 11px;border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(255,255,255,.03);
}
@media (max-width:768px){
  .entry-feature{grid-template-columns:1fr;padding:20px;gap:18px}
}
.entry-list{border-top:1px solid var(--line);margin-top:22px}
.entry-row{
  display:flex;align-items:flex-start;gap:20px;
  padding:20px 12px;border-bottom:1px solid var(--line);
  transition:background 180ms var(--ease);
}
.entry-row:hover{background:rgba(255,255,255,.03)}
.entry-main{min-width:0}
.entry-row h3{font-size:18px;font-weight:600;color:var(--t0);margin-bottom:6px;transition:color 180ms var(--ease)}
.entry-row:hover h3{color:var(--brand-hi)}
.entry-sum{font-size:15px;color:var(--t1);line-height:1.8;margin-bottom:8px}
.param-line{
  font-family:var(--font-num);font-size:13px;letter-spacing:.02em;color:var(--t2);
}
.entry-link{
  margin-left:auto;flex:none;align-self:center;font-size:14px;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
}
.entry-link svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform 180ms var(--ease)}
.entry-link:hover{color:var(--brand-hi);text-decoration:underline;text-underline-offset:4px}
.entry-link:hover svg{transform:translateX(3px)}
.entry-link:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
@media (max-width:767px){
  .entry-row{flex-direction:column;gap:10px;padding:18px 8px}
  .entry-link{margin-left:0}
}
.compare-bar{
  display:flex;align-items:flex-start;gap:12px;margin-top:20px;
  padding:14px 18px;border-radius:12px;
  background:var(--bg-1);border:1px solid var(--line);border-left:3px solid var(--brand);
  font-size:14px;color:var(--t1);line-height:1.8;
}
.compare-bar b{color:var(--t0);font-weight:600}
@media (max-width:767px){.compare-bar{padding:12px 14px;font-size:13.5px}}

/* ---------- FAQ ---------- */
.faq-panel{padding:12px 28px;margin-top:28px}
@media (max-width:767px){.faq-panel{padding:8px 18px}}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--t0);
  transition:color 180ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-hi)}
.faq-item summary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.faq-item .faq-icon{
  margin-left:auto;flex:none;width:22px;height:22px;position:relative;
  transition:transform 220ms var(--ease);
}
.faq-item .faq-icon::before,.faq-item .faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item .faq-icon::before{width:12px;height:2px}
.faq-item .faq-icon::after{width:2px;height:12px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{padding:0 0 22px;font-size:15px;color:var(--t1);line-height:1.9;max-width:820px}

/* ---------- CTA ---------- */
.cta-bar{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:32px;align-items:center;padding:36px 40px;
}
@media (max-width:1023px){.cta-bar{grid-template-columns:1fr;padding:30px 26px;gap:24px}}
@media (max-width:767px){.cta-bar{padding:24px 20px}}
.cta-bar h2{font-size:28px;font-weight:650;color:var(--t0);line-height:1.35;margin-bottom:12px;letter-spacing:-.01em}
@media (max-width:1024px){.cta-bar h2{font-size:23px}}
@media (max-width:767px){.cta-bar h2{font-size:21px}}
.cta-bar p{font-size:15px;color:var(--t1);max-width:520px}
.cta-form{display:grid;gap:14px}
.field{display:grid;gap:6px}
.field label{font-size:13px;color:var(--t1);letter-spacing:.02em}
.field input{
  height:46px;border-radius:var(--r-btn);background:var(--bg-1);
  border:1px solid var(--line);padding:0 16px;color:var(--t0);outline:none;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.field input::placeholder{color:var(--t2)}
.field input:hover{border-color:var(--line-strong)}
.field input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(43,227,192,.12)}
.field.error input{border-color:#FF6B6B;box-shadow:0 0 0 4px rgba(255,107,107,.12)}
.field .field-hint{font-size:12.5px;color:var(--t2)}
.field.error .field-hint{color:#FF6B6B}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
@media (max-width:520px){
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;border-top:1px solid var(--line);background:var(--bg-1);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:32px;padding-bottom:48px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr;gap:24px}}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--t2);line-height:1.9;max-width:360px}
.footer-col h3{font-size:15px;font-weight:600;color:var(--t0);margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--t1);transition:color 180ms var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-col a:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}
.footer-col p{font-size:14px;color:var(--t1);line-height:1.9;margin-bottom:8px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  padding:20px 0;border-top:1px solid var(--line);font-size:13px;color:var(--t2);
}
.footer-bottom a{color:var(--t2)}
.footer-bottom a:hover{color:var(--brand)}
@media (max-width:640px){.site-footer{padding-top:44px}}

/* roulang page: article */
:root{
  --bg-0:#070B14;--bg-1:#0B1220;--bg-2:#111A2B;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.14);
  --brand:#2BE3C0;--brand-hi:#7DF3DD;--brand-deep:#0E7C6B;--accent:#FFB020;
  --t0:#EAF2F8;--t1:#A7B6C8;--t2:#6B7C90;
  --r-card:16px;--r-price:20px;--r-btn:12px;--r-input:12px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.08),0 24px 48px -28px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(43,227,192,.4),0 0 32px -12px rgba(43,227,192,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(43,227,192,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container-x{max-width:1240px;margin:0 auto;padding:0 32px;position:relative}
.section{padding:96px 0}
.eyebrow{color:var(--brand);font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:600}
.h2-block{display:flex;align-items:flex-start;gap:14px;margin-bottom:24px}
.h2-block::before{content:"";flex:0 0 4px;width:4px;height:22px;background:var(--brand);border-radius:2px;margin-top:8px}
.h2-block h2{font-size:30px;line-height:1.3;font-weight:650;color:var(--t0);letter-spacing:-.01em}
.h2-block p{margin-top:8px;font-size:15px;color:var(--t2)}
.muted{color:var(--t2);font-size:13px;line-height:1.6}

/* ---------- Buttons ---------- */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:all 180ms var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand);color:var(--bg-0);box-shadow:0 8px 30px -10px rgba(43,227,192,.6)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 12px 38px -10px rgba(43,227,192,.75);color:var(--bg-0)}
.btn-primary:active{transform:translateY(0);background:var(--brand-deep);color:#EAF2F8}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--t0)}
.btn-ghost:hover{border-color:rgba(43,227,192,.6);box-shadow:0 0 24px -12px rgba(43,227,192,.6) inset;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);border-color:var(--brand-deep)}
.btn-primary[disabled],.btn-ghost[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-text{color:var(--brand);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px;color:var(--brand-hi)}

.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  border:1px solid rgba(43,227,192,.35);background:rgba(43,227,192,.12);color:var(--brand-hi);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge-plain{border-color:var(--line-strong);background:rgba(255,255,255,.04);color:var(--t1)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--t0);font-size:18px;letter-spacing:-.01em;flex:0 0 auto}
.logo-mark{width:32px;height:32px;border-radius:10px;background:linear-gradient(140deg,var(--brand),#0E7C6B);display:inline-flex;align-items:center;justify-content:center;box-shadow:0 6px 18px -8px rgba(43,227,192,.8)}
.logo-mark svg{width:18px;height:18px}
.nav-search{
  position:relative;display:flex;align-items:center;gap:8px;
  flex:1 1 auto;max-width:480px;min-width:240px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:999px;padding:0 16px;height:44px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 1px rgba(43,227,192,.35),0 0 26px -10px rgba(43,227,192,.55)}
.nav-search svg{width:18px;height:18px;flex:0 0 auto;stroke:var(--t2)}
.nav-search input{flex:1 1 auto;background:transparent;border:0;outline:none;font-size:14px;color:var(--t0);min-width:0}
.nav-search input::placeholder{color:var(--t2)}
.nav-links{display:flex;align-items:center;gap:22px;flex:0 0 auto}
.nav-links a{font-size:14.5px;color:var(--t1);padding:6px 2px;border-bottom:2px solid transparent;transition:color 180ms var(--ease),border-color 180ms var(--ease)}
.nav-links a:hover{color:var(--t0)}
.nav-links a.active{color:var(--brand);border-bottom-color:var(--brand)}
.header-cta{flex:0 0 auto;padding:10px 20px;font-size:14px}
.search-toggle,.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  background:var(--bg-1);border:1px solid var(--line);align-items:center;justify-content:center;cursor:pointer;
  transition:border-color 180ms var(--ease),background 180ms var(--ease);
}
.search-toggle svg,.nav-toggle svg{width:18px;height:18px;stroke:var(--t0)}
.search-toggle:hover,.nav-toggle:hover{border-color:rgba(43,227,192,.6)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:rgba(11,18,32,.98);padding:14px 20px 22px}
.mobile-drawer a{display:block;padding:12px 4px;font-size:15px;color:var(--t1);border-bottom:1px solid var(--line)}
.mobile-drawer a:hover{color:var(--brand)}
.mobile-drawer .btn-primary{width:100%;margin-top:16px}

/* ---------- Article head ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--bg-0),var(--bg-1));
  border-bottom:1px solid var(--line);padding:40px 0 48px;
}
.article-hero::before{
  content:"";position:absolute;right:-140px;top:-180px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,227,192,.12),transparent 62%);pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t2);margin-bottom:22px}
.breadcrumb a{color:var(--t2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{color:#2B3A4C}
.breadcrumb .current{color:var(--t1)}
.article-hero h1{font-size:40px;line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--t0);max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px;font-size:13px;color:var(--t2)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#2B3A4C}
.hero-divider{height:1px;background:var(--line);margin-top:28px}

/* ---------- Layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:44px;
  padding:56px 0 72px;align-items:start;
}
.article-body{max-width:768px;font-size:16px;line-height:1.9;color:var(--t1);overflow-wrap:break-word}
.article-body p{margin:0 0 18px}
.article-body h2{
  font-size:24px;line-height:1.4;font-weight:650;color:var(--t0);margin:40px 0 16px;
  display:flex;align-items:flex-start;gap:12px;scroll-margin-top:96px;
}
.article-body h2::before{content:"";flex:0 0 4px;width:4px;height:20px;background:var(--brand);border-radius:2px;margin-top:8px}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--t0);margin:32px 0 12px}
.article-body h4{font-size:16px;font-weight:600;color:var(--t0);margin:24px 0 10px}
.article-body a{color:var(--brand)}
.article-body a:hover{text-decoration:underline;text-underline-offset:4px}
.article-body strong{color:var(--t0);font-weight:600}
.article-body img{border-radius:12px;border:1px solid var(--line);margin:26px auto;height:auto}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--t2);text-align:center;margin-top:10px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px;line-height:1.9}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:26px 0;padding:16px 22px;border-left:3px solid var(--brand);
  background:var(--bg-1);border-radius:0 12px 12px 0;color:var(--t1);
}
.article-body code{background:var(--bg-2);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-hi)}
.article-body pre{background:var(--bg-1);border:1px solid var(--line);border-radius:12px;padding:18px;overflow-x:auto;margin:24px 0}
.article-body pre code{background:none;border:0;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body thead th{background:var(--bg-1);color:var(--t0);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.empty-state{
  border:1px dashed rgba(43,227,192,.5);border-radius:var(--r-card);
  padding:40px 28px;text-align:center;background:var(--bg-1);
}
.empty-state h2{font-size:22px;color:var(--t0);margin-bottom:10px}
.empty-state p{margin-bottom:22px;color:var(--t2);font-size:15px}

/* ---------- Tags & post nav ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:44px 0 0;padding-top:26px;border-top:1px solid var(--line)}
.tag-row .label{font-size:13px;color:var(--t2)}
.tag{display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;border:1px solid var(--line-strong);background:var(--bg-1);font-size:12.5px;color:var(--t1);transition:all 180ms var(--ease)}
.tag:hover{border-color:rgba(43,227,192,.6);color:var(--brand-hi)}

.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.post-nav-card{
  display:flex;flex-direction:column;gap:8px;padding:22px 24px;border-radius:var(--r-card);
  background:var(--bg-2);box-shadow:var(--shadow-card);transition:all 180ms var(--ease);
}
.post-nav-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.post-nav-label{font-size:12px;color:var(--t2);letter-spacing:.08em}
.post-nav-title{font-size:16px;font-weight:600;color:var(--t0)}
.post-nav-card.right{text-align:right;align-items:flex-end}
.back-link{margin-top:26px;display:inline-flex}

/* ---------- Sidebar ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.solid-card{
  background:var(--bg-2);border-radius:var(--r-card);box-shadow:var(--shadow-card);
  padding:24px;transition:box-shadow 180ms var(--ease)
}
.solid-card:hover{box-shadow:var(--shadow-hover)}
.side-title{font-size:13px;letter-spacing:.1em;color:var(--t2);font-weight:600;margin-bottom:16px}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);padding-left:0}
.toc-list a{display:block;font-size:14px;color:var(--t1);padding:8px 12px;border-left:2px solid transparent;margin-left:-1px;transition:all 180ms var(--ease)}
.toc-list a:hover{color:var(--brand-hi);border-left-color:rgba(43,227,192,.5);background:rgba(255,255,255,.03)}
.glass-card{
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line-strong);border-radius:var(--r-card);padding:24px;
}
.glass-card h3{font-size:17px;color:var(--t0);font-weight:650;margin-bottom:10px}
.glass-card p{font-size:14px;color:var(--t1);line-height:1.8;margin-bottom:18px}
.glass-card .btn-primary{width:100%}
.glass-card ul{margin-bottom:18px}
.glass-card li{font-size:13.5px;color:var(--t1);display:flex;gap:8px;margin-bottom:8px}
.glass-card li::before{content:"";flex:0 0 6px;width:6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px}

/* ---------- Related ---------- */
.related-block{padding:0 0 88px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:28px}
.card{
  background:var(--bg-2);border-radius:var(--r-card);box-shadow:var(--shadow-card);
  overflow:hidden;position:relative;transition:all 180ms var(--ease);display:flex;flex-direction:column;
}
.card::after{content:"";position:absolute;left:0;top:0;height:2px;width:100%;background:linear-gradient(90deg,var(--brand),transparent);opacity:0;transition:opacity 180ms var(--ease)}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.card:hover::after{opacity:1}
.card-media{aspect-ratio:16/10;width:100%;object-fit:cover;background:linear-gradient(140deg,#132033,#0A1220);border-bottom:1px solid var(--line)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;font-weight:650;color:var(--t0);line-height:1.45}
.card:hover .card-body h3{color:var(--brand-hi)}
.card-body p{font-size:14px;color:var(--t1);line-height:1.8}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:10px;font-size:13px;color:var(--t2)}

/* ---------- CTA ---------- */
.cta-strip{
  border-radius:var(--r-price);padding:40px;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line-strong);box-shadow:0 0 0 1px rgba(43,227,192,.16),0 30px 60px -40px rgba(43,227,192,.5);
}
.cta-strip h2{font-size:26px;font-weight:650;color:var(--t0);line-height:1.35;margin-bottom:12px}
.cta-strip p{font-size:15px;color:var(--t1)}
.cta-form{display:grid;gap:14px}
.field label{display:block;font-size:13px;color:var(--t1);margin-bottom:6px}
.field input{
  width:100%;height:46px;padding:0 16px;border-radius:var(--r-input);
  background:var(--bg-1);border:1px solid var(--line);color:var(--t0);outline:none;font-size:15px;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.field input::placeholder{color:var(--t2)}
.field input:focus{border-color:var(--brand);box-shadow:0 0 0 1px rgba(43,227,192,.3)}
.field.invalid input{border-color:#FF6B6B;box-shadow:0 0 0 1px rgba(255,107,107,.3)}
.field .err{display:none;font-size:12.5px;color:#FF6B6B;margin-top:6px}
.field.invalid .err{display:block}
.form-note{font-size:12.5px;color:var(--t2)}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--t2);line-height:1.85;max-width:340px}
.footer-col h3{font-size:14px;color:var(--t0);font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li,.footer-col p{font-size:14px;color:var(--t2);line-height:1.8}
.footer-col a{color:var(--t2);transition:color 180ms var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;font-size:13px;color:var(--t2);
}
.footer-bottom a{color:var(--t2)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .container-x{padding:0 24px}
  .section{padding:72px 0}
  .h2-block h2{font-size:24px}
  .article-hero h1{font-size:32px}
  .article-layout{grid-template-columns:1fr;gap:36px;padding:44px 0 60px}
  .article-side{position:static}
  .article-body{max-width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-strip{grid-template-columns:1fr;padding:32px}
}
@media (max-width:767px){
  .container-x{padding:0 20px}
  .section{padding:48px 0}
  .header-inner{height:60px;gap:12px}
  .nav-links,.header-cta{display:none}
  .search-toggle,.nav-toggle{display:inline-flex}
  .nav-search{
    position:absolute;left:0;right:0;top:100%;max-width:none;min-width:0;height:56px;
    border-radius:0;border-left:0;border-right:0;padding:0 20px;display:none;
    background:rgba(7,11,20,.97);
  }
  .site-header.search-open .nav-search{display:flex}
  .site-header.menu-open .mobile-drawer{display:block}
  .article-hero{padding:28px 0 34px}
  .article-hero h1{font-size:26px}
  .article-meta{gap:10px;font-size:12.5px}
  .article-body{font-size:15px;line-height:1.88}
  .article-body h2{font-size:20px;margin-top:32px}
  .article-body h3{font-size:17px}
  .article-body th,.article-body td{padding:8px 10px;font-size:13.5px}
  .post-nav{grid-template-columns:1fr}
  .post-nav-card.right{text-align:left;align-items:flex-start}
  .related-grid{grid-template-columns:1fr}
  .cta-strip{padding:24px}
  .cta-strip h2{font-size:21px}
  .btn-primary,.btn-ghost{width:100%}
  .header-cta,.btn-text,.tag{width:auto}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --bg-0:#070B14;--bg-1:#0B1220;--bg-2:#111A2B;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.14);
  --brand:#2BE3C0;--brand-hi:#7DF3DD;--brand-deep:#0E7C6B;
  --accent:#FFB020;
  --t0:#EAF2F8;--t1:#A7B6C8;--t2:#6B7C90;
  --r-card:16px;--r-price:20px;--r-btn:12px;--r-input:12px;--r-pill:999px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.08),0 24px 48px -28px rgba(0,0,0,.9);
  --shadow-hover:0 0 0 1px rgba(43,227,192,.4),0 0 32px -12px rgba(43,227,192,.35);
  --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-0);color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,sans-serif;
  font-size:16px;line-height:1.85;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{text-decoration:underline;text-underline-offset:4px}
h1,h2,h3,h4{margin:0;color:var(--t0);letter-spacing:-.01em}
h1{font-size:40px;font-weight:700;line-height:1.25}
h2{font-size:30px;font-weight:650;line-height:1.3;position:relative;padding-left:16px}
h2::before{content:"";position:absolute;left:0;top:.35em;width:4px;height:20px;border-radius:2px;background:var(--brand)}
h3{font-size:20px;font-weight:600;line-height:1.45}
.num,.mono{font-variant-numeric:tabular-nums;letter-spacing:.02em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* 容器与区块 */
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-alt{background:var(--bg-1)}
.section-head{margin-bottom:40px;max-width:760px}
.section-head p{margin-top:16px;font-size:16px;color:var(--t1);line-height:1.85}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand);letter-spacing:.06em;margin-bottom:14px}

/* 徽章 / 标签 */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);font-size:12.5px;line-height:1.6;border:1px solid rgba(43,227,192,.35);background:rgba(43,227,192,.12);color:var(--brand-hi)}
.badge-amber{border-color:rgba(255,176,32,.35);background:rgba(255,176,32,.12);color:var(--accent)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.4;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:all 180ms var(--ease)}
.btn:hover{text-decoration:none}
.btn-glow{background:var(--brand);color:var(--bg-0);box-shadow:0 8px 30px -10px rgba(43,227,192,.6)}
.btn-glow:hover{background:var(--brand-hi);transform:translateY(-2px);box-shadow:0 12px 38px -10px rgba(43,227,192,.75);filter:brightness(1.08)}
.btn-glow:active{background:var(--brand-deep);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--t0)}
.btn-ghost:hover{border-color:rgba(43,227,192,.6);box-shadow:inset 0 0 22px -10px rgba(43,227,192,.55);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);background:rgba(255,255,255,.04)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(7,11,20,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{position:relative;display:flex;align-items:center;gap:20px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--t0);font-size:17px;font-weight:700;letter-spacing:.01em}
.logo:hover{color:var(--brand-hi);text-decoration:none}
.logo-mark{width:30px;height:30px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(145deg,var(--brand),var(--brand-deep));box-shadow:0 0 18px -4px rgba(43,227,192,.55)}
.logo-mark svg{width:18px;height:18px}
.search-box{position:relative}
.search-box svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:18px;height:18px;fill:none;stroke:var(--t2);stroke-width:1.8;stroke-linecap:round;pointer-events:none;transition:stroke 180ms var(--ease)}
.search-box input{width:100%;height:42px;border-radius:var(--r-pill);padding:0 18px 0 42px;font-size:14px;font-family:inherit;color:var(--t0);background:rgba(255,255,255,.04);border:1px solid var(--line);transition:all 180ms var(--ease)}
.search-box input::placeholder{color:var(--t2)}
.search-box input:hover{border-color:var(--line-strong)}
.search-box input:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.06);box-shadow:0 0 0 3px rgba(43,227,192,.15),0 0 26px -10px rgba(43,227,192,.7)}
.nav-search{flex:1 1 auto;max-width:480px;min-width:180px}
.nav-links{display:flex;align-items:center;gap:22px;flex:0 0 auto;margin-left:auto}
.nav-links a{position:relative;font-size:15px;color:var(--t1);padding:6px 2px}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform 180ms var(--ease)}
.nav-links a:hover{color:var(--t0);text-decoration:none}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand)}
.nav-cta{flex:0 0 auto;padding:10px 20px;font-size:14px}
.header-actions{display:none;margin-left:auto;gap:8px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line-strong);background:transparent;color:var(--t0);cursor:pointer;transition:all 180ms var(--ease)}
.icon-btn:hover{border-color:rgba(43,227,192,.6);color:var(--brand)}
.icon-btn:active{background:rgba(255,255,255,.05)}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}

/* Hero */
.hero-cat{position:relative;overflow:hidden;padding:60px 0 64px;border-bottom:1px solid var(--line)}
.hero-cat::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center right;opacity:.16}
.hero-cat::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,.6),var(--bg-0) 88%)}
.hero-inner{position:relative;z-index:2;max-width:860px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t2);margin-bottom:18px}
.breadcrumb a{color:var(--t2)}
.breadcrumb a:hover{color:var(--brand);text-decoration:none}
.breadcrumb .sep{opacity:.5}
.hero-inner h1{margin-bottom:16px}
.hero-sub{font-size:16px;color:var(--t1);max-width:640px}
.hero-search{max-width:560px;margin-top:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.hero-meta div{min-width:120px}
.hero-meta .kpi{display:block;font-size:26px;font-weight:700;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.hero-meta .kpi-label{font-size:13px;color:var(--t2)}

/* 筛选条 */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 34px}
.filter-pill{padding:8px 18px;border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(255,255,255,.02);color:var(--t1);font-size:14px;line-height:1.6;cursor:pointer;transition:all 180ms var(--ease)}
.filter-pill:hover{border-color:rgba(43,227,192,.5);color:var(--t0)}
.filter-pill.is-active{background:var(--brand);border-color:var(--brand);color:var(--bg-0);font-weight:600;box-shadow:0 8px 24px -14px rgba(43,227,192,.8)}

/* 卡片 */
.solid-card{position:relative;overflow:hidden;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:0 24px 48px -30px rgba(0,0,0,.9);transition:all 200ms var(--ease)}
.solid-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--brand),transparent);opacity:0;transition:opacity 200ms var(--ease)}
.solid-card:hover{transform:translateY(-3px);border-color:transparent;box-shadow:var(--shadow-hover)}
.solid-card:hover::before{opacity:1}
.solid-card:hover h3{color:var(--brand-hi)}
.card-media{margin:20px 20px 0;aspect-ratio:16/10;border-radius:12px;overflow:hidden;background:linear-gradient(135deg,#152238,#0B1220)}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:18px 20px 22px}
.card-body h3{margin:12px 0 8px;font-size:18px}
.card-desc{font-size:14px;line-height:1.8;color:var(--t1)}
.point-list{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 18px}
.point-list li{font-size:12.5px;color:var(--t1);border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 12px;background:rgba(255,255,255,.02)}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.card-link svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;transition:transform 180ms var(--ease)}
.card-link:hover{color:var(--brand-hi);text-decoration:none}
.card-link:hover svg{transform:translateX(3px)}

/* 参数对照表 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-2);box-shadow:0 24px 48px -32px rgba(0,0,0,.9)}
table.params{width:100%;min-width:820px;border-collapse:collapse;font-size:14px}
.params caption{caption-side:top;text-align:left;padding:18px 20px 0;font-size:13px;color:var(--t2)}
.params thead th{background:var(--bg-1);color:var(--t0);font-weight:600;text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap;font-size:14px}
.params tbody td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--t1);vertical-align:top}
.params tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.params tbody tr:hover{background:rgba(43,227,192,.05)}
.params tbody tr:last-child td{border-bottom:none}
.params td.strong{color:var(--t0);font-weight:600}
.table-note{margin-top:16px;font-size:13px;color:var(--t2)}

/* 编号清单 */
.flow-list{border-top:1px solid var(--line)}
.flow-row{display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px;padding:24px 0;border-bottom:1px solid var(--line);transition:background 180ms var(--ease)}
.flow-row:hover{background:rgba(255,255,255,.02)}
.flow-index{font-size:15px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.06em;padding-top:2px}
.flow-row h3{font-size:17px;margin-bottom:8px}
.flow-row p{font-size:14.5px;line-height:1.85;color:var(--t1);max-width:680px}

/* 时间轴 */
.timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;position:relative}
.timeline::before{content:"";position:absolute;top:20px;left:20px;right:20px;height:1px;background:var(--line-strong);z-index:0}
.step{position:relative;z-index:1}
.step-num{width:40px;height:40px;border-radius:var(--r-pill);display:flex;align-items:center;justify-content:center;background:var(--bg-1);border:1px solid rgba(43,227,192,.35);color:var(--accent);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;margin-bottom:18px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;line-height:1.8;color:var(--t1)}

/* 玻璃卡 / CTA */
.glass-card{background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--line-strong);border-radius:var(--r-price);box-shadow:inset 0 0 0 1px rgba(255,255,255,.05),0 24px 48px -28px rgba(0,0,0,.9)}
.cta-band{padding:40px 36px}
.cta-band h2{font-size:26px}
.cta-band h2::before{height:18px;top:.28em}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:13px;font-weight:600;color:var(--t1)}
.field input,.field select,.field textarea{width:100%;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-input);padding:12px 14px;color:var(--t0);font-size:15px;font-family:inherit;transition:all 180ms var(--ease)}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--t2)}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--line-strong)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,227,192,.15)}
.form-note{font-size:12.5px;color:var(--t2);margin-top:10px}
.form-msg{margin-top:14px;font-size:13.5px;color:var(--brand);display:none}
.form-msg.show{display:block}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;margin-top:36px}
.faq-item{background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--line-strong);border-radius:var(--r-card);overflow:hidden;transition:border-color 180ms var(--ease)}
.faq-item:hover{border-color:rgba(43,227,192,.4)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;cursor:pointer;list-style:none;color:var(--t0);font-size:16px;font-weight:600;line-height:1.6}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform 200ms var(--ease)}
.faq-icon svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.8;stroke-linecap:round}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--t1);max-width:900px}

/* 页脚 */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:48px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:var(--t2);max-width:360px}
.footer-col h3{padding:0;margin:0 0 16px;font-size:15px;font-weight:600;color:var(--t0)}
.footer-col h3::before{display:none}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--t1)}
.footer-col a:hover{color:var(--brand);text-decoration:none}
.footer-col p{font-size:14px;color:var(--t2);margin-bottom:8px;line-height:1.85}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:20px 0 28px;border-top:1px solid var(--line);font-size:13px;color:var(--t2)}
.footer-bottom a{color:var(--t2)}
.footer-bottom a:hover{color:var(--brand);text-decoration:none}

/* 响应式 */
@media (max-width:1024px){
  h1{font-size:32px}
  h2{font-size:24px}
  h3{font-size:18px}
  .section{padding:72px 0}
  .container-x{padding:0 24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px}
  .timeline::before{display:none}
}
@media (max-width:1023px){
  .header-inner{height:60px;gap:12px}
  .nav-search{position:absolute;left:20px;right:20px;top:calc(100% + 8px);max-width:none;display:none;z-index:70}
  .site-header.search-open .nav-search{display:block}
  .nav-links{display:none;position:fixed;left:0;right:0;top:60px;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:10px 20px 20px;background:var(--bg-1);border-bottom:1px solid var(--line);z-index:65}
  .site-header.menu-open .nav-links{display:flex}
  .nav-links a{padding:14px 2px;border-bottom:1px solid var(--line);font-size:15px}
  .nav-links a:last-child{border-bottom:none}
  .nav-links a::after{display:none}
  .nav-cta{display:none}
  .header-actions{display:flex}
}
@media (max-width:768px){
  .cta-band{padding:28px 22px}
  .hero-meta{gap:20px}
  .hero-meta .kpi{font-size:22px}
}
@media (max-width:640px){
  body{font-size:15px}
  h1{font-size:26px}
  h2{font-size:21px}
  h3{font-size:17px}
  .section{padding:48px 0}
  .container-x{padding:0 20px}
  .hero-cat{padding:40px 0 48px}
  .footer-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .flow-row{grid-template-columns:40px minmax(0,1fr);gap:14px}
  .btn{width:100%}
  .btn-ghost{width:100%}
  .card-media{margin:16px 16px 0}
  .card-body{padding:16px}
}