/* roulang page: index */
:root{
  --bg:#0A101E;
  --bg-alt:#0D1526;
  --bg-alt2:#111A2E;
  --footer-bg:#090F1B;
  --brand:#14CFBE;
  --brand-deep:#0FA79A;
  --brand-light:#6BE6DA;
  --amber:#FFB454;
  --text:#E9F1FA;
  --text-2:#A7B6CC;
  --text-3:#6E8099;
  --ok:#38D39F;
  --warn:#FF8A5B;
  --err:#FF5F6D;
  --glass:rgba(255,255,255,.045);
  --glass-border:rgba(120,190,255,.14);
  --glass-top:rgba(255,255,255,.06);
  --track:rgba(255,255,255,.06);
  --r-btn:10px;
  --r-card:16px;
  --r-panel:20px;
  --shadow-card:0 8px 32px rgba(0,0,0,.35);
  --shadow-glow:0 8px 24px rgba(20,207,190,.35);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
}
*,*::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:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -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(120,190,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,190,255,.045) 1px, transparent 1px);
  background-size:32px 32px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:.01em}
p{margin:0}
svg{display:block}
::selection{background:rgba(20,207,190,.35);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A101E}
::-webkit-scrollbar-thumb{background:rgba(20,207,190,.28);border-radius:999px;border:2px solid #0A101E}
::-webkit-scrollbar-thumb:hover{background:rgba(20,207,190,.5)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;position:relative}
.site-header,main,.site-footer{position:relative;z-index:1}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  padding:12px 0;
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.scrolled{
  background:rgba(9,15,27,.85);
  border-bottom-color:var(--glass-border);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.nav-card{
  display:flex;align-items:center;gap:14px;
  min-height:56px;
  padding:8px 20px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 8px 32px rgba(0,0,0,.28), inset 0 1px 0 var(--glass-top);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:grid;place-items:center;
  border:1.5px solid var(--brand);
  background:rgba(20,207,190,.08);
  color:var(--brand);
  box-shadow:0 0 0 3px rgba(20,207,190,.06);
}
.brand-text{font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 15px;border-radius:10px;
  font-size:14px;color:var(--text-3);
  border:1px solid transparent;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-link:hover{background:rgba(20,207,190,.10);color:var(--brand)}
.nav-link.active{color:var(--brand);border-color:rgba(20,207,190,.45);background:rgba(20,207,190,.08)}
.nav-cta{margin-left:8px;flex-shrink:0}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:10px;
  background:rgba(20,207,190,.08);border:1px solid var(--glass-border);
  cursor:pointer;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ Drawer ============ */
.drawer{position:fixed;inset:0;z-index:120;display:none}
.drawer.open{display:block}
.drawer-backdrop{position:absolute;inset:0;background:rgba(5,9,18,.72);backdrop-filter:blur(6px);animation:fadeIn .25s var(--ease)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(420px,88vw);
  background:rgba(13,21,38,.94);
  border-left:1px solid var(--glass-border);
  backdrop-filter:blur(18px);
  padding:22px;
  display:flex;flex-direction:column;
  animation:slideIn .25s var(--ease);
  overflow-y:auto;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideIn{from{transform:translateX(24px);opacity:0}to{transform:translateX(0);opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--glass-border);
  background:transparent;color:var(--text-2);font-size:22px;line-height:1;cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.drawer-close:hover{color:var(--brand);border-color:rgba(20,207,190,.5)}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.drawer-link{
  display:flex;align-items:center;justify-content:center;
  min-height:64px;padding:10px;border-radius:12px;
  background:var(--glass);border:1px solid var(--glass-border);
  font-size:14px;color:var(--text-2);text-align:center;
  transition:all .2s var(--ease);
}
.drawer-link:hover{color:var(--brand);border-color:rgba(20,207,190,.5)}
.drawer-link.active{color:var(--brand);border-color:rgba(20,207,190,.55);background:rgba(20,207,190,.10)}
.drawer-cta{margin-top:20px;width:100%}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#04161A;box-shadow:var(--shadow-glow);border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-light);transform:translateY(-2px);box-shadow:0 12px 30px rgba(20,207,190,.42)}
.btn-primary:active{transform:scale(.98);background:var(--brand-deep)}
.btn-outline{background:transparent;color:var(--brand);border-color:rgba(20,207,190,.4)}
.btn-outline:hover{background:rgba(20,207,190,.10);border-color:var(--brand);transform:translateY(-2px)}
.btn-outline:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--text-2);padding:0 4px;height:auto}
.btn-ghost:hover{color:var(--brand)}
.btn-ghost .arrow{transition:transform .2s var(--ease)}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;
}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}

/* ============ Badges / tags ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:999px;
  font-size:12.5px;line-height:1.7;font-weight:500;
}
.badge-brand{background:rgba(20,207,190,.12);color:var(--brand-light)}
.badge-amber{background:rgba(255,180,84,.12);color:var(--amber)}
.badge-muted{background:rgba(120,190,255,.08);color:var(--text-3)}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;font-size:13px;
  background:var(--glass);border:1px solid var(--glass-border);color:var(--text-2);
  transition:all .2s var(--ease);
}
.tag:hover{color:var(--brand);border-color:rgba(20,207,190,.45)}

/* ============ Section basics ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-alt2{background:var(--bg-alt2)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:44px;flex-wrap:wrap;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand);letter-spacing:.06em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand);display:block}
.section-title{
  position:relative;
  font-size:clamp(24px,2.6vw,34px);
  font-weight:600;padding-left:16px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
}
.section-desc{color:var(--text-2);font-size:15.5px;max-width:640px;margin-top:14px;line-height:1.85}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14.5px;font-weight:500;
  transition:color .2s var(--ease);
}
.text-link .arrow{transition:transform .2s var(--ease)}
.text-link:hover{color:var(--brand-light)}
.text-link:hover .arrow{transform:translateX(4px)}

/* ============ Hero ============ */
.hero{position:relative;padding:88px 0 104px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;
  opacity:.3;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(720px 460px at 76% 26%, rgba(20,207,190,.16), transparent 68%),
    linear-gradient(180deg, rgba(10,16,30,.55) 0%, rgba(10,16,30,.94) 78%, var(--bg) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{
  font-size:clamp(30px,4.1vw,52px);
  line-height:1.2;font-weight:700;margin:20px 0 18px;
  background:linear-gradient(120deg,#FFFFFF 0%,#D9E9F7 45%,#6BE6DA 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:var(--text-2);font-size:17px;line-height:1.9;max-width:560px}
.hero-actions{display:flex;align-items:center;gap:14px;margin:30px 0 32px;flex-wrap:wrap}
.hero-points{display:flex;flex-direction:column;gap:12px}
.hero-points li{display:flex;align-items:flex-start;gap:10px;color:var(--text-2);font-size:15px}
.hero-points .dot{
  flex-shrink:0;width:18px;height:18px;margin-top:5px;border-radius:50%;
  background:rgba(20,207,190,.14);display:grid;place-items:center;color:var(--brand);font-size:11px;font-weight:700;
}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-panel);
  border:1px solid var(--glass-border);
  box-shadow:0 24px 60px rgba(0,0,0,.5);
  background:linear-gradient(135deg,#111A2E,#0D1526);
}
.glass-panel{
  background:rgba(255,255,255,.045);
  border:1px solid var(--glass-border);
  border-radius:var(--r-panel);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 8px 32px rgba(0,0,0,.35), inset 0 1px 0 var(--glass-top);
}
.hero-metrics{
  position:absolute;left:-24px;bottom:-26px;
  display:flex;gap:26px;padding:18px 24px;
}
.hero-metric{min-width:104px}
.hero-metric b{
  display:block;font-size:26px;font-weight:700;color:var(--brand-light);
  font-variant-numeric:tabular-nums;line-height:1.3;
}
.hero-metric span{font-size:12.5px;color:var(--text-3)}

/* ============ Metrics board ============ */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{
  position:relative;overflow:hidden;
  padding:26px 24px 24px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.metric-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--brand),rgba(20,207,190,0));
}
.metric-card:hover{transform:translateY(-4px);border-color:rgba(20,207,190,.3);box-shadow:var(--shadow-card)}
.metric-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.metric-icon{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:rgba(20,207,190,.10);color:var(--brand);border:1px solid rgba(20,207,190,.22);
}
.metric-value{
  display:flex;align-items:baseline;gap:5px;
  font-size:44px;font-weight:700;line-height:1.1;color:var(--text);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.metric-value em{font-style:normal;font-size:17px;color:var(--text-3);font-weight:500}
.metric-name{margin-top:10px;font-size:14px;color:var(--text-2)}

/* ============ Service matrix ============ */
.service-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  grid-auto-rows:minmax(0,auto);
  gap:24px;
}
.card{
  position:relative;display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  padding:26px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(20,207,190,.3);box-shadow:var(--shadow-card)}
.card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.card p{color:var(--text-2);font-size:14.5px;line-height:1.85}
.card-cover{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;
  margin-bottom:20px;border:1px solid var(--glass-border);
  background:linear-gradient(135deg,#111A2E,#0D1526);
}
.service-main{grid-column:span 2;grid-row:span 2;padding:32px}
.service-main .card-cover{aspect-ratio:21/9}
.service-main h3{font-size:24px}
.service-side{padding:24px}
.feature-list{display:flex;flex-direction:column;gap:10px;margin:16px 0 20px}
.feature-list li{display:flex;align-items:flex-start;gap:9px;font-size:14.5px;color:var(--text-2)}
.feature-list .tick{color:var(--brand);flex-shrink:0;margin-top:6px}
.card-foot{margin-top:auto;padding-top:16px}

/* ============ Flow ============ */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.flow-item{position:relative;padding-top:26px}
.flow-item::before{
  content:"";position:absolute;top:7px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(20,207,190,.55),rgba(120,190,255,.10));
}
.flow-item::after{
  content:"";position:absolute;top:2px;left:0;width:11px;height:11px;border-radius:50%;
  background:var(--bg);border:2px solid var(--brand);box-shadow:0 0 0 4px rgba(20,207,190,.10);
}
.flow-num{
  font-size:13px;color:var(--amber);font-variant-numeric:tabular-nums;letter-spacing:.08em;margin-bottom:8px;
}
.flow-item h3{font-size:17px;margin-bottom:8px}
.flow-item p{color:var(--text-2);font-size:14.5px}

/* ============ Compare ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{padding:30px}
.compare-col h3{font-size:20px;margin:16px 0 24px}
.bar-list{display:flex;flex-direction:column;gap:20px}
.bar-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:8px;font-size:14px;color:var(--text-2)}
.bar-head b{color:var(--text);font-variant-numeric:tabular-nums;font-weight:600}
.bar{height:8px;border-radius:999px;background:var(--track);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-deep),var(--brand));transition:width .8s var(--ease)}
.compare-before .bar i{background:linear-gradient(90deg,#3C4A61,#5B6E8C)}
.compare-before .bar-head b{color:var(--text-2)}
.compare-after{border-color:rgba(20,207,190,.32);box-shadow:0 8px 32px rgba(20,207,190,.10)}
.compare-note{margin-top:22px;font-size:13.5px;color:var(--text-3);line-height:1.8}

/* ============ News ============ */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  padding:24px 22px;
  backdrop-filter:blur(14px);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(20,207,190,.32);box-shadow:var(--shadow-card)}
.news-title{
  font-size:16.5px;font-weight:600;line-height:1.6;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:1;line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.news-excerpt{
  color:var(--text-2);font-size:14px;line-height:1.8;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:50px;
}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid rgba(120,190,255,.10);
  display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);
}
.news-meta .arrow{margin-left:auto;color:var(--brand);transition:transform .2s var(--ease)}
.news-card:hover .news-meta .arrow{transform:translateX(4px)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;padding:64px 24px;text-align:center;
  background:var(--glass);border:1px dashed var(--glass-border);border-radius:var(--r-panel);
  min-height:220px;
}
.empty-state svg{color:var(--text-3)}
.empty-state strong{font-size:17px;font-weight:600;color:var(--text-2)}
.empty-state span{font-size:14px;color:var(--text-3)}
.skeleton{
  height:180px;border-radius:var(--r-card);
  background:linear-gradient(100deg,rgba(255,255,255,.04) 30%,rgba(20,207,190,.12) 50%,rgba(255,255,255,.04) 70%);
  background-size:220% 100%;
  animation:shine 1.6s linear infinite;
  border:1px solid var(--glass-border);
}
@keyframes shine{from{background-position:180% 0}to{background-position:-40% 0}}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{
  background:var(--glass);border:1px solid var(--glass-border);
  border-radius:var(--r-card);overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item.open{border-color:rgba(20,207,190,.35);background:rgba(20,207,190,.045)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;
  color:var(--text);font-size:16px;font-weight:500;
}
.faq-num{
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
  flex-shrink:0;width:26px;
}
.faq-item.open .faq-num{color:var(--brand)}
.faq-text{flex:1;position:relative;padding-left:14px}
.faq-text::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:2px;
  background:transparent;transition:background .2s var(--ease);
}
.faq-item.open .faq-text::before{background:var(--brand)}
.faq-icon{
  flex-shrink:0;width:22px;height:22px;display:grid;place-items:center;
  color:var(--text-3);transition:transform .25s var(--ease),color .25s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(180deg);color:var(--brand)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease)}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a>div{overflow:hidden}
.faq-a p{padding:0 22px 22px 76px;color:var(--text-2);font-size:14.5px;line-height:1.85}

/* ============ Contact ============ */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.contact-copy h2{margin-bottom:16px}
.contact-copy p{color:var(--text-2);font-size:15.5px}
.contact-points{display:flex;flex-direction:column;gap:16px;margin-top:28px}
.contact-points li{display:flex;gap:12px;align-items:flex-start}
.contact-points .ico{
  flex-shrink:0;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:rgba(20,207,190,.10);color:var(--brand);border:1px solid rgba(20,207,190,.22);
}
.contact-points b{display:block;font-size:14.5px;font-weight:600;margin-bottom:2px}
.contact-points span{font-size:13.5px;color:var(--text-3)}
.form-card{padding:32px}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px}
.form-row label .req{color:var(--amber)}
.field{
  width:100%;height:44px;padding:0 14px;
  background:rgba(10,16,30,.72);
  border:1px solid var(--glass-border);
  border-radius:var(--r-btn);
  color:var(--text);font-size:14.5px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
textarea.field{height:auto;min-height:112px;padding:12px 14px;line-height:1.75;resize:vertical}
.field::placeholder{color:var(--text-3)}
.field:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(20,207,190,.18)}
.field.error{border-color:var(--err);box-shadow:0 0 0 3px rgba(255,95,109,.14)}
.field-msg{display:none;margin-top:6px;font-size:12.5px;color:var(--err)}
.field-msg.show{display:block}
.form-foot{display:flex;align-items:center;gap:16px;margin-top:22px;flex-wrap:wrap}
.form-tip{font-size:12.5px;color:var(--text-3);margin-top:14px;line-height:1.75}
.form-status{display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-btn);font-size:14px}
.form-status.ok{display:block;background:rgba(56,211,159,.10);border:1px solid rgba(56,211,159,.35);color:var(--ok)}
.form-status.err{display:block;background:rgba(255,95,109,.10);border:1px solid rgba(255,95,109,.35);color:var(--err)}
.spinner{
  width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(4,22,26,.35);border-top-color:#04161A;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ Footer ============ */
.site-footer{
  background:var(--footer-bg);
  border-top:1px solid var(--glass-border);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{color:var(--text-3);font-size:13.5px;line-height:1.85;max-width:320px}
.footer-col h4{font-size:14.5px;font-weight:600;color:var(--text);margin-bottom:18px}
.footer-col li{margin-bottom:11px}
.footer-col a,.footer-col span{font-size:13.5px;color:var(--text-3);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(3px)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(120,190,255,.10);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}

/* ============ Responsive ============ */
@media (max-width:1280px){
  .container{padding:0 28px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:80px 0}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:grid}
  .hero{padding:64px 0 80px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-metrics{position:static;margin-top:20px;left:auto;bottom:auto}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .service-main{grid-column:span 2;grid-row:auto}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:64px 0}
  .nav-card{padding:8px 14px;min-height:60px}
  .brand-text{font-size:15px}
  .site-header{padding:8px 0}
  .section-head{margin-bottom:32px}
  .hero{padding:48px 0 64px}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto}
  .metric-grid{grid-template-columns:1fr}
  .service-grid{grid-template-columns:1fr}
  .service-main{grid-column:span 1}
  .news-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr}
  .faq-a p{padding:0 18px 20px 18px}
  .faq-q{padding:16px;font-size:15px}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .compare-col{padding:24px}
}
@media (max-width:480px){
  .hero h1{font-size:28px}
  .hero-metrics{flex-direction:column;gap:16px;padding:16px 18px}
  .metric-value{font-size:38px}
  .form-foot .btn{width:100%}
  .drawer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* roulang page: article */
:root{
  --bg:#0A101E;
  --bg-alt:#0D1526;
  --bg-alt2:#111A2E;
  --head:#090F1B;
  --primary:#14CFBE;
  --primary-deep:#0FA79A;
  --primary-light:#6BE6DA;
  --amber:#FFB454;
  --text:#E9F1FA;
  --text-2:#A7B6CC;
  --text-3:#6E8099;
  --success:#38D39F;
  --danger:#FF5F6D;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(120,190,255,.14);
  --line-strong:rgba(120,190,255,.3);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-card:0 8px 32px rgba(0,0,0,.35);
  --sh-card-hover:0 16px 42px rgba(0,0,0,.48);
  --sh-glow:0 8px 24px rgba(20,207,190,.35);
  --ease:200ms ease-out;
  --maxw:1200px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.02em;
  min-height:100vh;
  overflow-x:hidden;
  text-align:left;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,190,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,255,.05) 1px,transparent 1px);
  background-size:32px 32px;
}
body::after{
  content:"";position:fixed;top:-240px;left:50%;transform:translateX(-50%);
  width:900px;height:620px;z-index:0;pointer-events:none;
  background:radial-gradient(circle,rgba(20,207,190,.13),rgba(20,207,190,0) 70%);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:rgba(20,207,190,.32);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070C16}
::-webkit-scrollbar-thumb{background:rgba(20,207,190,.3);border-radius:999px;border:2px solid #070C16}
::-webkit-scrollbar-thumb:hover{background:rgba(20,207,190,.5)}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;position:relative;z-index:1}
@media(max-width:1024px){.container{padding:0 24px}}
@media(max-width:768px){.container{padding:0 16px}}

/* ============ HEADER / NAV ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;padding:12px 0;
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
}
.site-header.scrolled{background:rgba(9,15,27,.86);backdrop-filter:blur(16px);border-bottom-color:var(--line)}
.nav-card{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  height:68px;padding:0 20px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 10px 30px rgba(0,0,0,.28);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:12px;
  color:var(--primary);background:rgba(20,207,190,.1);border:1px solid rgba(20,207,190,.32);
  box-shadow:0 0 18px rgba(20,207,190,.18);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center}
.nav-link{
  display:inline-flex;align-items:center;height:44px;padding:0 14px;border-radius:12px;
  font-size:14px;color:var(--text-2);border:1px solid transparent;transition:all var(--ease);
  white-space:nowrap;
}
.nav-link:hover{background:rgba(20,207,190,.1);color:var(--primary)}
.nav-link.active{color:var(--primary);border-color:rgba(20,207,190,.42);background:rgba(20,207,190,.08)}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  position:relative;flex:0 0 auto;background:rgba(255,255,255,.03);
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:var(--text-2);border-radius:2px;
  transform:translateX(-50%);transition:all var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px;left:0;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-sm);
  font-size:14px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  transition:transform var(--ease),background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
  border:1px solid transparent;
}
.btn-primary{background:var(--primary);color:#04211E;border-color:var(--primary);box-shadow:var(--sh-glow)}
.btn-primary:hover{background:var(--primary-light);transform:translateY(-2px)}
.btn-primary:active{transform:scale(.98)}
.btn-primary:disabled{opacity:.4;box-shadow:none;transform:none;cursor:not-allowed}
.btn-ghost{background:transparent;border-color:rgba(20,207,190,.4);color:var(--primary)}
.btn-ghost:hover{background:rgba(20,207,190,.1);transform:translateY(-2px)}
.btn-line{background:var(--glass);border-color:var(--line);color:var(--text-2)}
.btn-line:hover{color:var(--text);border-color:var(--line-strong);transform:translateY(-2px)}
.btn-text{height:auto;padding:0;color:var(--primary);font-weight:600;border:0}
.btn-text .arrow{transition:transform var(--ease)}
.btn-text:hover .arrow{transform:translateX(4px)}
@media(max-width:768px){.btn{height:48px}}

/* ============ BADGE / TAG ============ */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(20,207,190,.12);color:var(--primary-light);border:1px solid rgba(20,207,190,.24);
}
.badge-amber{background:rgba(255,180,84,.12);color:var(--amber);border-color:rgba(255,180,84,.26)}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);background:var(--glass);border:1px solid var(--line);
  transition:all var(--ease);
}
.tag:hover{color:var(--primary);border-color:rgba(20,207,190,.35);transform:translateY(-2px)}

/* ============ MAIN SHELL ============ */
main{padding-top:112px;position:relative;z-index:1}
.section{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.section-title{position:relative;font-size:30px;font-weight:600;line-height:1.32;padding-left:16px;color:var(--text)}
.section-title::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:4px;border-radius:2px;background:var(--primary)}
.section-sub{color:var(--text-2);font-size:15px;margin-top:10px;padding-left:16px;max-width:760px}
@media(max-width:768px){.section-title{font-size:24px}.section{padding:48px 0}}

/* ============ BREADCRUMB ============ */
.breadcrumb{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13.5px;color:var(--text-3);margin-bottom:20px}
.breadcrumb a{color:var(--text-2);transition:color var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(110,128,153,.6)}
.breadcrumb em{font-style:normal;color:var(--text);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(max-width:768px){.breadcrumb em{max-width:100%;white-space:normal}}

/* ============ ARTICLE HEAD ============ */
.article-head{max-width:900px;margin-bottom:32px}
.article-title{
  font-size:38px;line-height:1.28;font-weight:700;color:var(--text);
  margin:16px 0 18px;max-width:900px;overflow-wrap:break-word;
}
.article-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13.5px;color:var(--text-3);padding-bottom:22px;border-bottom:1px solid var(--line)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
@media(max-width:1024px){.article-title{font-size:32px}}
@media(max-width:768px){.article-title{font-size:26px;line-height:1.35}}

/* ============ ARTICLE LAYOUT ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,760px);justify-content:center;gap:40px;align-items:start}
.article-cover{margin:0 0 32px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:rgba(255,255,255,.03);position:relative;box-shadow:var(--sh-card)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.92}
.article-cover figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:32px 20px 14px;font-size:12.5px;color:var(--text-2);
  background:linear-gradient(to top,rgba(9,15,27,.92),rgba(9,15,27,0));
}
.article-aside{display:none}
.toc{position:sticky;top:104px;padding:20px 18px;border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);box-shadow:var(--sh-card)}
.toc h3{font-size:13px;letter-spacing:.06em;color:var(--text-3);font-weight:600;margin-bottom:12px}
.toc-link{display:block;padding:7px 10px;border-left:2px solid rgba(120,190,255,.16);font-size:13.5px;color:var(--text-2);line-height:1.5;transition:all var(--ease)}
.toc-link:hover{color:var(--primary);border-left-color:rgba(20,207,190,.6);background:rgba(20,207,190,.07)}
.toc-link.current{color:var(--primary);border-left-color:var(--primary);background:rgba(20,207,190,.1)}
@media(min-width:1280px){.article-layout{grid-template-columns:220px minmax(0,760px)}.article-aside{display:block}}

/* ============ ARTICLE BODY ============ */
.article-body{font-size:16.5px;line-height:1.9;color:var(--text-2);overflow-wrap:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;font-size:26px;line-height:1.4;font-weight:600;color:var(--text);
  margin:44px 0 16px;padding-left:16px;scroll-margin-top:110px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--primary)}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--text);margin:30px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:22px 0 10px}
.article-body strong{color:var(--text);font-weight:600}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(20,207,190,.4);transition:all var(--ease)}
.article-body a:hover{color:var(--primary-light);border-bottom-color:var(--primary-light)}
.article-body ul{margin:0 0 22px;padding-left:0}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:4px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(20,207,190,.6)}
.article-body ol{margin:0 0 22px;counter-reset:item}
.article-body ol li{position:relative;padding-left:40px;margin-bottom:12px;counter-increment:item}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);position:absolute;left:0;top:1px;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;font-weight:700;
  color:var(--primary);font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:26px 0;padding:20px 22px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);border-left:4px solid var(--amber);
  color:var(--text);line-height:1.8;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:24px auto;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.article-body figure{margin:26px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:14.5px;border-radius:var(--r-sm);overflow:hidden}
.article-body thead th{background:rgba(20,207,190,.1);color:var(--text);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid rgba(120,190,255,.1)}
.article-body tbody tr:nth-child(odd){background:rgba(255,255,255,.028)}
.article-body tbody tr:hover{background:rgba(20,207,190,.06)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;background:rgba(20,207,190,.1);color:var(--primary-light);padding:2px 7px;border-radius:6px}

/* ============ ARTICLE FOOT / TAGS ============ */
.article-tags{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:40px 0 0;padding-top:26px;border-top:1px solid var(--line)}
.article-tags .tag-label{font-size:13px;color:var(--text-3)}

/* ============ NAV CARDS (prev / next) ============ */
.next-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px}
.next-card{padding:22px;border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);box-shadow:var(--sh-card);transition:all var(--ease);display:block}
.next-card:hover{transform:translateY(-4px);border-color:rgba(20,207,190,.3);box-shadow:var(--sh-card-hover)}
.next-card .k{font-size:12.5px;color:var(--text-3);display:block;margin-bottom:8px}
.next-card .t{font-size:17px;font-weight:600;color:var(--text);line-height:1.5}
@media(max-width:768px){.next-grid{grid-template-columns:1fr}}

/* ============ RELATED / CONTENT CARDS ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.content-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--sh-card);
  backdrop-filter:blur(14px);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.content-card:hover{transform:translateY(-4px);border-color:rgba(20,207,190,.3);box-shadow:var(--sh-card-hover)}
.content-card .thumb{position:relative;overflow:hidden;background:rgba(255,255,255,.03)}
.content-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms ease-out}
.content-card:hover .thumb img{transform:scale(1.04)}
.content-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.content-card h3{font-size:18px;font-weight:600;color:var(--text);line-height:1.5}
.content-card p{font-size:14px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;font-size:13px;color:var(--text-3)}
@media(max-width:1024px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:768px){.card-grid{grid-template-columns:1fr}}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);overflow:hidden;transition:border-color var(--ease),background var(--ease)}
.faq-item.open{border-color:rgba(20,207,190,.32);background:rgba(20,207,190,.05)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;padding:20px 22px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);transition:color var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;color:var(--text-3);font-variant-numeric:tabular-nums}
.faq-item.open .faq-num{color:var(--primary)}
.faq-q .chev{margin-left:auto;flex:0 0 auto;color:var(--text-3);transition:transform var(--ease),color var(--ease)}
.faq-item.open .chev{transform:rotate(180deg);color:var(--primary)}
.faq-a{display:none;padding:0 22px 22px 62px;color:var(--text-2);font-size:15px;line-height:1.85}
.faq-item.open .faq-a{display:block;border-left:3px solid var(--primary);margin-left:22px;padding-left:24px}
@media(max-width:768px){.faq-a{padding-left:22px}.faq-item.open .faq-a{margin-left:14px}}

/* ============ CTA ============ */
.cta-panel{
  margin-top:24px;padding:44px;border-radius:var(--r-lg);position:relative;overflow:hidden;
  background:linear-gradient(120deg,rgba(20,207,190,.12),rgba(255,255,255,.035) 55%);
  border:1px solid rgba(20,207,190,.28);box-shadow:var(--sh-card);
}
.cta-panel::after{content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(20,207,190,.22),transparent 70%)}
.cta-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;position:relative;z-index:1}
.cta-panel h2{font-size:28px;font-weight:600;line-height:1.35;color:var(--text);margin-bottom:14px}
.cta-panel p{color:var(--text-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}
.cta-list{display:flex;flex-direction:column;gap:12px}
.cta-list li{display:flex;align-items:center;gap:12px;font-size:14.5px;color:var(--text-2);padding:14px 16px;border-radius:var(--r-sm);background:rgba(9,15,27,.45);border:1px solid var(--line)}
.cta-list li strong{color:var(--text);font-weight:600}
@media(max-width:1024px){.cta-grid{grid-template-columns:1fr}.cta-panel{padding:32px}}
@media(max-width:768px){.cta-panel{padding:26px 20px}.cta-panel h2{font-size:22px}}

/* ============ EMPTY / SKELETON ============ */
.empty-state{
  text-align:center;padding:74px 24px;border-radius:var(--r-lg);
  background:var(--glass);border:1px dashed rgba(120,190,255,.24);
}
.empty-state .ico{width:64px;height:64px;margin:0 auto 20px;border-radius:20px;display:flex;align-items:center;justify-content:center;background:rgba(20,207,190,.1);border:1px solid rgba(20,207,190,.26);color:var(--primary)}
.empty-state h2{font-size:22px;font-weight:600;color:var(--text);margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;max-width:520px;margin:0 auto 24px}
.skeleton{position:relative;overflow:hidden;background:rgba(255,255,255,.05);border-radius:var(--r-sm)}
.skeleton::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,transparent,rgba(20,207,190,.18),transparent);animation:sk 1.4s infinite}
@keyframes sk{from{transform:translateX(-100%)}to{transform:translateX(100%)}}

/* ============ FOOTER ============ */
.site-footer{position:relative;z-index:1;margin-top:48px;background:var(--head);border-top:1px solid var(--line);padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{color:var(--text-2);font-size:14px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:14.5px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text-3);line-height:1.6}
.footer-col a{color:var(--text-2);transition:color var(--ease),transform var(--ease);display:inline-block}
.footer-col a:hover{color:var(--primary);transform:translateX(3px)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
@media(max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:28px}.site-footer{padding:40px 0 22px}}

/* ============ RESPONSIVE NAV ============ */
@media(max-width:1024px){
  .nav-card{height:60px;padding:0 14px}
  .nav-links{
    position:fixed;top:84px;left:16px;right:16px;flex-direction:column;align-items:stretch;
    gap:8px;padding:16px;border-radius:var(--r-md);
    background:rgba(9,15,27,.96);border:1px solid var(--line);backdrop-filter:blur(18px);
    box-shadow:0 20px 50px rgba(0,0,0,.5);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
    max-height:calc(100vh - 110px);overflow-y:auto;
  }
  .nav-links.open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-link{height:48px;font-size:15px;background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:12px}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  main{padding-top:96px}
}
@media(max-width:480px){
  .brand-text{font-size:15.5px}
  .article-title{font-size:23px}
}

/* roulang page: category1 */
:root{
  --bg:#0A101E;
  --bg-alt:#0D1526;
  --bg-alt2:#111A2E;
  --header-bg:#090F1B;
  --primary:#14CFBE;
  --primary-deep:#0FA79A;
  --primary-light:#6BE6DA;
  --amber:#FFB454;
  --success:#38D39F;
  --warning:#FF8A5B;
  --danger:#FF5F6D;
  --text:#E9F1FA;
  --text-2:#A7B6CC;
  --text-3:#6E8099;
  --glass:rgba(255,255,255,0.045);
  --glass-strong:rgba(255,255,255,0.075);
  --line:rgba(120,190,255,0.14);
  --line-soft:rgba(120,190,255,0.08);
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:20px;
  --radius-pill:999px;
  --shadow-card:0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover:0 16px 44px rgba(0,0,0,0.48);
  --glow:0 8px 24px rgba(20,207,190,0.35);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --ease:200ms ease-out;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0.02em;
  -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(120,190,255,0.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,255,0.05) 1px,transparent 1px);
  background-size:32px 32px;
  opacity:.55;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;color:var(--text)}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:0.02em;
  white-space:nowrap;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
  color:#04211F;
  border:1px solid rgba(20,207,190,0.9);
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(20,207,190,0.45)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{
  background:transparent;
  color:var(--primary-light);
  border:1px solid rgba(20,207,190,0.4);
}
.btn-ghost:hover{background:rgba(20,207,190,0.1);transform:translateY(-2px);border-color:rgba(20,207,190,0.7)}
.btn-ghost:active{transform:scale(.98)}
.btn-text{
  height:auto;padding:0;color:var(--primary-light);font-weight:600;
}
.btn-text i{transition:transform var(--ease)}
.btn-text:hover{color:var(--primary)}
.btn-text:hover i{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:0.02em;
  line-height:1.6;
}
.badge-primary{background:rgba(20,207,190,0.12);color:var(--primary-light);border:1px solid rgba(20,207,190,0.25)}
.badge-amber{background:rgba(255,180,84,0.12);color:var(--amber);border:1px solid rgba(255,180,84,0.25)}

.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
}

section{position:relative;padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-alt2{background:var(--bg-alt2)}

.section-head{margin-bottom:48px;max-width:760px}
.section-title{
  font-size:32px;
  font-weight:600;
  padding-left:16px;
  border-left:4px solid var(--primary);
  margin-bottom:14px;
}
.section-sub{color:var(--text-2);font-size:16px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary-light);font-size:13px;font-weight:600;
  letter-spacing:0.08em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--primary);border-radius:2px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding:12px 0;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(9,15,27,0.85);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.nav-card{
  display:flex;
  align-items:center;
  gap:16px;
  height:68px;
  padding:0 20px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  color:var(--primary);
  background:rgba(20,207,190,0.1);
  border:1px solid rgba(20,207,190,0.35);
  box-shadow:0 0 18px rgba(20,207,190,0.22);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:0.02em;color:var(--text)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  display:inline-flex;align-items:center;
  height:44px;padding:0 16px;
  border-radius:12px;
  font-size:15px;
  color:var(--text-2);
  border:1px solid transparent;
  white-space:nowrap;
}
.nav-link:hover{background:rgba(20,207,190,0.1);color:var(--primary-light)}
.nav-link.active{
  color:var(--primary-light);
  background:rgba(20,207,190,0.08);
  border-color:rgba(20,207,190,0.45);
}
.nav-cta{margin-left:8px;flex-shrink:0}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:12px;width:20px;height:2px;border-radius:2px;background:var(--text);
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px;left:0}
.nav-toggle span::after{top:6px;left:0}

.nav-overlay{
  position:fixed;inset:0;z-index:88;
  background:rgba(5,9,18,0.6);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
}
.nav-overlay.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;inset:0;z-index:90;
  padding:24px 20px;
  background:rgba(9,15,27,0.94);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transform:translateY(-10px);
  opacity:0;visibility:hidden;
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--glass);
  color:var(--text);font-size:18px;
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}
.drawer-card{
  display:block;
  padding:18px 14px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  font-size:15px;
  font-weight:600;
  color:var(--text-2);
}
.drawer-card i{display:block;color:var(--primary);font-size:16px;margin-bottom:8px}
.drawer-card.active{color:var(--primary-light);border-color:rgba(20,207,190,0.45);background:rgba(20,207,190,0.08)}
.drawer-cta{width:100%}

/* ============ 页面首屏 ============ */
.page-hero{
  position:relative;
  padding:64px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line-soft);
}
.hero-media{
  position:absolute;inset:0;
  z-index:0;
}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
  opacity:.32;
  filter:saturate(.85);
}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(10,16,30,0.55) 0%,rgba(10,16,30,0.9) 65%,var(--bg) 100%),
    radial-gradient(600px 320px at 18% 30%,rgba(20,207,190,0.14),transparent 70%);
}
.hero-inner{position:relative;z-index:2;max-width:820px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13.5px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb .current{color:var(--text-2);font-weight:600}
.page-hero h1{
  font-size:44px;
  font-weight:700;
  line-height:1.22;
  margin:16px 0 18px;
  letter-spacing:0.01em;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--primary-light);
}
.hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:680px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}

/* ============ 规格双栏 ============ */
.split-grid{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:32px;
  align-items:start;
}
.article-block h2{
  font-size:26px;
  margin-bottom:18px;
  padding-left:14px;
  border-left:4px solid var(--primary);
}
.article-block p{color:var(--text-2)}
.article-figure{
  margin-top:26px;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  position:relative;
}
.article-figure img{width:100%;height:280px;object-fit:cover}
.article-figure figcaption{
  padding:12px 16px;
  font-size:13.5px;
  color:var(--text-3);
  background:var(--bg-alt2);
  border-top:1px solid var(--line-soft);
}
.key-points{margin-top:26px;display:grid;gap:14px}
.key-point{
  display:flex;gap:14px;
  padding:16px 18px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
}
.key-point i{
  color:var(--primary);
  font-size:16px;
  margin-top:5px;
  flex-shrink:0;
}
.key-point strong{display:block;font-size:15.5px;margin-bottom:4px}
.key-point span{color:var(--text-2);font-size:14.5px;line-height:1.75}

.spec-panel{padding:0;overflow:hidden}
.spec-panel-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 22px;
  border-bottom:1px solid var(--line);
  background:rgba(20,207,190,0.06);
}
.spec-panel-head h3{font-size:18px}
.spec-panel-head i{color:var(--primary);margin-right:8px}
.spec-list{padding:6px 22px 18px}
.spec-row{
  display:grid;
  grid-template-columns:118px 1fr;
  gap:16px;
  padding:14px 0;
  border-bottom:1px solid var(--line-soft);
}
.spec-row:last-child{border-bottom:0}
.spec-row dt{color:var(--text-3);font-size:14px;font-weight:500}
.spec-row dd{
  margin:0;
  font-size:14.5px;
  color:var(--text);
  font-variant-numeric:tabular-nums;
}
.spec-note{
  padding:14px 22px 20px;
  font-size:13px;
  color:var(--text-3);
  border-top:1px solid var(--line-soft);
}

/* ============ 规格小卡 ============ */
.spec-cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:48px;
}
.spec-card{
  padding:24px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
  position:relative;
  overflow:hidden;
}
.spec-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--primary),rgba(20,207,190,0));
}
.spec-card:hover{transform:translateY(-4px);border-color:rgba(20,207,190,0.3);box-shadow:var(--shadow-hover)}
.spec-card i{color:var(--primary);font-size:20px;margin-bottom:14px;display:block}
.spec-card .spec-num{
  font-size:34px;font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;
  color:var(--text);
}
.spec-card .spec-unit{font-size:14px;color:var(--text-3);margin-left:6px}
.spec-card h3{font-size:18px;margin:12px 0 8px}
.spec-card p{color:var(--text-2);font-size:14.5px;margin:0}

/* ============ 时效对比 ============ */
.lane-list{display:grid;gap:22px;margin-top:8px}
.lane-row{
  padding:22px 24px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease);
}
.lane-row:hover{border-color:rgba(20,207,190,0.3);transform:translateY(-2px)}
.lane-meta{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:12px}
.lane-name{font-size:16px;font-weight:600}
.lane-value{
  font-size:20px;font-weight:700;
  color:var(--primary-light);
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.lane-bar{
  height:8px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,0.06);
  overflow:hidden;
}
.lane-bar span{
  display:block;height:100%;
  border-radius:var(--radius-pill);
  background:linear-gradient(90deg,var(--primary-deep),var(--primary-light));
}
.lane-row.amber .lane-bar span{background:linear-gradient(90deg,#D98F2F,var(--amber))}
.lane-row.amber .lane-value{color:var(--amber)}
.lane-note{margin:12px 0 0;font-size:14px;color:var(--text-3);line-height:1.7}

/* ============ 服务保障非对称 ============ */
.guarantee-grid{
  display:grid;
  grid-template-columns:1.45fr 1fr;
  grid-template-rows:auto auto;
  gap:24px;
}
.g-card{
  padding:28px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.g-card:hover{transform:translateY(-4px);border-color:rgba(20,207,190,0.3);box-shadow:var(--shadow-hover)}
.g-main{grid-row:span 2;display:flex;flex-direction:column}
.g-main .g-img{
  border-radius:var(--radius-sm);
  overflow:hidden;
  margin-bottom:22px;
  border:1px solid var(--line-soft);
}
.g-main .g-img img{width:100%;height:230px;object-fit:cover}
.g-card h3{font-size:19px;margin-bottom:12px}
.g-card p{color:var(--text-2);font-size:15px;margin-bottom:14px}
.g-icon{
  width:42px;height:42px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(20,207,190,0.1);
  border:1px solid rgba(20,207,190,0.3);
  color:var(--primary);
  font-size:17px;
  margin-bottom:16px;
}
.g-list{margin-top:auto;display:grid;gap:10px}
.g-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--text-2);
}
.g-list li i{color:var(--primary);margin-top:6px;font-size:12px;flex-shrink:0}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--glass);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--ease);
}
.faq-item.is-open{border-color:rgba(20,207,190,0.35)}
.faq-q{
  display:flex;align-items:center;gap:16px;
  width:100%;
  padding:20px 22px;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--text);
}
.faq-index{
  font-variant-numeric:tabular-nums;
  color:var(--text-3);
  font-size:14px;
  font-weight:600;
  flex-shrink:0;
  width:28px;
}
.faq-item.is-open .faq-index{color:var(--primary)}
.faq-q span.q-text{flex:1}
.faq-arrow{
  color:var(--text-3);
  transition:transform var(--ease),color var(--ease);
  flex-shrink:0;
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--primary)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 300ms ease-out;
  border-left:3px solid transparent;
}
.faq-item.is-open .faq-a{border-left-color:var(--primary)}
.faq-a p{
  padding:0 22px 22px 66px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
  margin:0;
}

/* ============ CTA 表单 ============ */
.cta-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:32px;
  align-items:start;
}
.cta-copy h2{font-size:30px;margin-bottom:16px}
.cta-copy p{color:var(--text-2)}
.cta-stats{display:grid;gap:16px;margin-top:28px}
.cta-stat{
  display:flex;align-items:baseline;gap:10px;
  padding:16px 18px;
  border-radius:var(--radius);
  background:var(--glass);
  border:1px solid var(--line);
}
.cta-stat b{
  font-size:26px;
  color:var(--primary-light);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.cta-stat span{color:var(--text-3);font-size:14px}

.form-card{padding:30px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;color:var(--text-2);font-weight:500}
.field input,
.field select,
.field textarea{
  width:100%;
  height:44px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  background:rgba(10,16,30,0.7);
  border:1px solid var(--line);
  color:var(--text);
  font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
  appearance:none;
}
.field textarea{height:auto;padding:12px 14px;min-height:110px;resize:vertical;line-height:1.7}
.field select{background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input::placeholder,
.field textarea::placeholder{color:var(--text-3)}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(20,207,190,0.18);
  background:rgba(10,16,30,0.95);
}
.field .err{font-size:12.5px;color:var(--danger);display:none}
.field.has-error input,
.field.has-error select,
.field.has-error textarea{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,95,109,0.16)}
.field.has-error .err{display:block}
.form-foot{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  margin-top:22px;
}
.form-tip{font-size:13px;color:var(--text-3);line-height:1.7;flex:1;min-width:220px}
.form-success{
  display:none;
  margin-top:16px;
  padding:12px 16px;
  border-radius:var(--radius-sm);
  background:rgba(56,211,159,0.1);
  border:1px solid rgba(56,211,159,0.35);
  color:var(--success);
  font-size:14px;
}
.form-success.is-visible{display:block}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--header-bg);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{color:var(--text-3);font-size:14px;line-height:1.85;margin:0}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px;color:var(--text-3)}
.footer-col a{color:var(--text-3);display:inline-block}
.footer-col a:hover{color:var(--primary-light);transform:translateX(4px)}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .nav-link{padding:0 13px;font-size:14.5px}
}

@media (max-width:1024px){
  .container{padding:0 24px}
  section{padding:72px 0}
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .page-hero h1{font-size:36px}
  .split-grid{grid-template-columns:1fr}
  .spec-cards{grid-template-columns:1fr 1fr}
  .guarantee-grid{grid-template-columns:1fr;grid-template-rows:auto}
  .g-main{grid-row:auto}
  .cta-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:768px){
  .container{padding:0 16px}
  section{padding:56px 0}
  .nav-card{height:60px;padding:0 14px}
  .brand-text{font-size:16px}
  .page-hero{padding:44px 0 52px}
  .page-hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .section-title{font-size:24px}
  .section-head{margin-bottom:32px}
  .spec-cards{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
  .faq-a p{padding:0 18px 20px 18px}
  .faq-q{padding:16px;font-size:15.5px;gap:10px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .cta-copy h2{font-size:24px}
  .article-block h2{font-size:22px}
}

@media (max-width:520px){
  .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .lane-meta{flex-direction:column;align-items:flex-start;gap:6px}
  .spec-row{grid-template-columns:1fr;gap:4px}
  .drawer-grid{grid-template-columns:1fr}
}

@media (max-width:375px){
  .brand-text{font-size:15px}
  .page-hero h1{font-size:25px}
  .spec-card{padding:20px}
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root{
  --bg:#0A101E;
  --bg-alt:#0D1526;
  --bg-alt2:#111A2E;
  --header-bg:#090F1B;
  --brand:#14CFBE;
  --brand-dark:#0FA79A;
  --brand-light:#6BE6DA;
  --amber:#FFB454;
  --text:#E9F1FA;
  --text-2:#A7B6CC;
  --text-3:#6E8099;
  --success:#38D39F;
  --warn:#FF8A5B;
  --danger:#FF5F6D;
  --glass:rgba(255,255,255,0.045);
  --glass-strong:rgba(255,255,255,0.07);
  --border:rgba(120,190,255,0.14);
  --border-brand:rgba(20,207,190,0.30);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --shadow:0 8px 32px rgba(0,0,0,0.35);
  --shadow-deep:0 16px 44px rgba(0,0,0,0.45);
  --glow:0 8px 24px rgba(20,207,190,0.35);
  --ease:200ms ease-out;
}
/* ===== reset ===== */
*,*::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:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0.01em;
  -webkit-font-smoothing:antialiased;
  padding-top:68px;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,0.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,0.035) 1px,transparent 1px);
  background-size:32px 32px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
::selection{background:rgba(20,207,190,0.28)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-alt)}
::-webkit-scrollbar-thumb{background:rgba(20,207,190,0.30);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(20,207,190,0.55)}
/* ===== 布局容器 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;position:relative;z-index:1}
.section{padding:96px 0;position:relative;z-index:1}
.section--alt{background:var(--bg-alt)}
.section--deep{background:var(--bg-alt2)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{
  font-size:32px;font-weight:600;line-height:1.35;letter-spacing:0.01em;
  padding-left:16px;border-left:4px solid var(--brand);
}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:0.08em;color:var(--brand);
  background:rgba(20,207,190,0.10);border:1px solid rgba(20,207,190,0.28);
  padding:4px 12px;border-radius:999px;margin-bottom:18px;
}
/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:0.01em;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04201D;box-shadow:var(--glow);border:1px solid var(--brand)}
.btn-primary:hover{background:var(--brand-light);transform:translateY(-2px);box-shadow:0 12px 28px rgba(20,207,190,0.45)}
.btn-ghost{border:1px solid rgba(20,207,190,0.40);color:var(--brand-light);background:transparent}
.btn-ghost:hover{background:rgba(20,207,190,0.10);border-color:var(--brand);transform:translateY(-2px)}
.btn-text{color:var(--brand);padding:0;min-height:auto;font-weight:600}
.btn-text svg{transition:transform var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}
.btn:active{transform:scale(0.98)}
.btn:focus-visible{outline:none;box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--brand)}
.btn:disabled{opacity:0.4;box-shadow:none;cursor:not-allowed;transform:none}
/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  padding:8px 0;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{background:rgba(9,15,27,0.85);backdrop-filter:blur(16px);border-bottom-color:var(--border)}
.nav-card{
  display:flex;align-items:center;gap:14px;
  min-height:52px;padding:0 8px 0 16px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--border);
  backdrop-filter:blur(16px);
  box-shadow:0 1px 0 rgba(255,255,255,0.06) inset;
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:0.01em;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;color:var(--brand);
  border:1px solid rgba(20,207,190,0.45);
  background:rgba(20,207,190,0.10);
}
.brand-text{color:var(--text)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;margin-right:auto}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--r-sm);
  font-size:14px;color:var(--text-2);border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.nav-link:hover{background:rgba(20,207,190,0.10);color:var(--brand)}
.nav-link.active{color:var(--brand);border-color:rgba(20,207,190,0.45);background:rgba(20,207,190,0.08)}
.nav-link:focus-visible{outline:none;box-shadow:0 0 0 2px var(--brand)}
.nav-cta{min-height:36px;font-size:14px;padding:0 16px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:var(--glass);position:relative;flex-shrink:0;
}
.nav-toggle span,.nav-toggle::before,.nav-toggle::after{
  content:"";position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--text-2);
  transition:transform var(--ease),opacity var(--ease),background var(--ease);
}
.nav-toggle::before{top:13px}
.nav-toggle span{top:19px}
.nav-toggle::after{top:25px}
.site-header.menu-open .nav-toggle::before{transform:translateY(6px) rotate(45deg);background:var(--brand)}
.site-header.menu-open .nav-toggle span{opacity:0}
.site-header.menu-open .nav-toggle::after{transform:translateY(-6px) rotate(-45deg);background:var(--brand)}
/* ===== 内页 Hero ===== */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--border)}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:0.30;
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,16,30,0.94) 0%,rgba(10,16,30,0.72) 55%,rgba(10,16,30,0.55) 100%);
}
.page-hero__inner{position:relative;z-index:2;padding:72px 0 64px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:22px}
.crumbs a{color:var(--text-3);transition:color var(--ease)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:rgba(110,128,153,0.7)}
.crumbs .current{color:var(--text);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60vw}
.page-hero h1{
  font-size:46px;font-weight:700;line-height:1.22;letter-spacing:0.01em;max-width:820px;
}
.page-hero .lead{
  margin-top:20px;max-width:680px;color:var(--text-2);font-size:17px;line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.fact-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;font-size:13.5px;color:var(--text-2);
  background:var(--glass);border:1px solid var(--border);
}
.fact-chip b{color:var(--brand);font-variant-numeric:tabular-nums;font-size:15px}
/* ===== 能力矩阵 ===== */
.matrix-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.matrix-cell{
  position:relative;padding:26px 22px 24px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--border);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease),background var(--ease);
  overflow:hidden;
}
.matrix-cell::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),rgba(20,207,190,0));
}
.matrix-cell:hover{transform:translateY(-4px);border-color:var(--border-brand);box-shadow:var(--shadow-deep);background:var(--glass-strong)}
.matrix-cell .ic{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  color:var(--brand);background:rgba(20,207,190,0.10);border:1px solid rgba(20,207,190,0.28);margin-bottom:16px;
}
.matrix-cell h3{font-size:18px;font-weight:600;line-height:1.5}
.matrix-cell p{margin-top:8px;color:var(--text-2);font-size:14.5px;line-height:1.8}
/* ===== 对比表 ===== */
.table-wrap{
  border-radius:var(--r-md);border:1px solid var(--border);background:var(--glass);
  overflow-x:auto;box-shadow:var(--shadow);
}
table.matrix-table{width:100%;min-width:760px;border-collapse:collapse;font-size:14.5px}
table.matrix-table th{
  text-align:left;font-weight:600;font-size:15px;color:var(--brand-light);
  background:rgba(20,207,190,0.10);
  padding:16px 20px;border-bottom:1px solid var(--border);white-space:nowrap;
}
table.matrix-table td{
  padding:16px 20px;color:var(--text-2);border-bottom:1px solid rgba(120,190,255,0.08);
  vertical-align:top;line-height:1.75;
}
table.matrix-table tbody tr:nth-child(even) td{background:rgba(255,255,255,0.028)}
table.matrix-table tbody tr:hover td{background:rgba(20,207,190,0.06)}
table.matrix-table td:first-child{color:var(--text);font-weight:600}
table.matrix-table tbody tr:last-child td{border-bottom:0}
/* ===== 卡点卡片 ===== */
.risk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.risk-card{
  border-radius:var(--r-md);overflow:hidden;background:var(--glass);
  border:1px solid var(--border);display:flex;flex-direction:column;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.risk-card:hover{transform:translateY(-4px);border-color:var(--border-brand);box-shadow:var(--shadow-deep)}
.risk-card figure{margin:0;position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt2)}
.risk-card figure img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease-out}
.risk-card:hover figure img{transform:scale(1.05)}
.risk-card__body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:3px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(20,207,190,0.12);color:var(--brand);border:1px solid rgba(20,207,190,0.24);
}
.badge--amber{background:rgba(255,180,84,0.12);color:var(--amber);border-color:rgba(255,180,84,0.26)}
.risk-card h3{font-size:19px;font-weight:600;line-height:1.5}
.risk-card p{color:var(--text-2);font-size:14.5px;line-height:1.8}
/* ===== 场景标签 + 节奏 ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.tag{
  padding:9px 18px;border-radius:999px;font-size:14px;color:var(--text-2);
  background:var(--glass);border:1px solid var(--border);
  transition:color var(--ease),border-color var(--ease),background var(--ease),transform var(--ease);
}
.tag:hover{color:var(--brand);border-color:var(--border-brand);background:rgba(20,207,190,0.08);transform:translateY(-2px)}
.steps{display:flex;flex-direction:column;gap:14px}
.step{
  display:flex;gap:16px;padding:18px 20px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--border);
  transition:border-color var(--ease),background var(--ease),transform var(--ease);
}
.step:hover{border-color:var(--border-brand);background:var(--glass-strong);transform:translateY(-2px)}
.step-num{
  flex-shrink:0;font-size:15px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;min-width:32px;
}
.step h4{font-size:16px;font-weight:600}
.step p{color:var(--text-2);font-size:14px;line-height:1.75;margin-top:4px}
/* ===== 数据条 ===== */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}
.stat{
  padding:24px;border-radius:var(--r-md);background:var(--glass);border:1px solid var(--border);
  border-top:2px solid transparent;
  background-image:linear-gradient(var(--glass),var(--glass)),linear-gradient(90deg,var(--brand),rgba(20,207,190,0));
  background-origin:border-box;background-clip:padding-box,border-box;
  transition:transform var(--ease),box-shadow var(--ease);
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--shadow-deep)}
.stat .num{font-size:44px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:0.01em}
.stat .num span{font-size:17px;color:var(--text-3);margin-left:4px;font-weight:500}
.stat .label{margin-top:8px;color:var(--text-2);font-size:14px}
/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  border-radius:var(--r-md);background:var(--glass);border:1px solid var(--border);
  overflow:hidden;transition:border-color var(--ease),background var(--ease);
}
.faq-item.open{border-color:var(--border-brand);background:var(--glass-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;padding:20px 22px;text-align:left;
  border-left:3px solid transparent;transition:border-color var(--ease);
}
.faq-item.open .faq-q{border-left-color:var(--brand)}
.faq-num{font-size:14px;font-weight:700;color:var(--text-3);font-variant-numeric:tabular-nums}
.faq-item.open .faq-num{color:var(--brand)}
.faq-q .q-text{flex:1;font-size:16.5px;font-weight:600;line-height:1.6}
.faq-arrow{flex-shrink:0;color:var(--text-3);transition:transform var(--ease),color var(--ease)}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms ease-out}
.faq-a p{padding:0 22px 22px 59px;color:var(--text-2);font-size:15px;line-height:1.85}
.faq-q:focus-visible{outline:none;box-shadow:0 0 0 2px var(--brand) inset}
/* ===== CTA ===== */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:64px 48px;text-align:center;
  background:linear-gradient(140deg,rgba(20,207,190,0.10),rgba(255,255,255,0.035));
  border:1px solid var(--border-brand);box-shadow:var(--shadow);
}
.cta-panel::after{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  right:-160px;top:-200px;background:radial-gradient(circle,rgba(20,207,190,0.16),transparent 68%);
  pointer-events:none;
}
.cta-panel h2{font-size:32px;font-weight:600;line-height:1.35}
.cta-panel p{margin:18px auto 0;max-width:620px;color:var(--text-2);font-size:16px}
.cta-panel .btn{margin-top:32px}
.cta-note{margin-top:16px;font-size:13px;color:var(--text-3)}
/* ===== 页脚 ===== */
.site-footer{background:var(--header-bg);border-top:1px solid var(--border);padding:64px 0 28px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;margin-bottom:16px}
.footer-desc{color:var(--text-2);font-size:14px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text-2);line-height:1.7}
.footer-col a{color:var(--text-2);font-size:14px;transition:color var(--ease),transform var(--ease);display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(3px)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
/* ===== 断点 ===== */
@media (max-width:1280px){
  .matrix-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:80px 0}
  .matrix-grid{grid-template-columns:repeat(2,1fr)}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:40px}
  .page-hero h1{font-size:38px}
  .nav-links{
    position:fixed;inset:0;z-index:66;margin:0;
    display:grid;grid-template-columns:repeat(2,1fr);align-content:start;gap:12px;
    padding:96px 24px 120px;
    background:rgba(9,15,27,0.94);backdrop-filter:blur(18px);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
    overflow-y:auto;
  }
  .nav-links.open{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .nav-link{
    height:auto;min-height:64px;justify-content:flex-start;font-size:15px;padding:16px;
    background:var(--glass);border:1px solid var(--border);border-radius:var(--r-md);
  }
  .nav-toggle{display:block;position:relative;z-index:70;margin-left:auto}
  .nav-cta{display:none}
  .site-header.menu-open .nav-cta{
    display:inline-flex;position:fixed;left:24px;right:24px;bottom:28px;z-index:70;
    min-height:48px;justify-content:center;
  }
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  body{padding-top:60px;font-size:15.5px}
  .container{padding:0 16px}
  .section{padding:60px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:26px}
  .page-hero__inner{padding:48px 0 48px}
  .page-hero h1{font-size:30px;line-height:1.28}
  .page-hero .lead{font-size:15.5px;margin-top:16px}
  .matrix-grid{grid-template-columns:1fr;gap:16px}
  .risk-grid{grid-template-columns:1fr;gap:16px}
  .stat-row{grid-template-columns:1fr;gap:16px;margin-top:32px}
  .cta-panel{padding:44px 22px}
  .cta-panel h2{font-size:24px}
  .faq-a p{padding:0 20px 20px 20px}
  .faq-q{padding:18px;gap:12px}
  .faq-q .q-text{font-size:15.5px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-desc{max-width:100%}
  .footer-bottom{flex-direction:column;gap:8px;font-size:12.5px}
  .nav-links{grid-template-columns:1fr;padding:88px 16px 120px}
  .site-header.menu-open .nav-cta{left:16px;right:16px}
  .hero-actions .btn{width:100%}
}
@media (max-width:480px){
  .page-hero h1{font-size:26px}
  .brand{font-size:15px}
  .brand-mark{width:28px;height:28px}
  .stat .num{font-size:36px}
  .hero-facts{flex-direction:column;align-items:flex-start}
}
@media (max-width:375px){
  .page-hero h1{font-size:23px}
  .section-head h2{font-size:22px}
  .cta-panel h2{font-size:21px}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --bg:#0A101E;
  --bg-alt:#0D1526;
  --bg-alt-2:#111A2E;
  --foot-bg:#090F1B;
  --brand:#14CFBE;
  --brand-deep:#0FA79A;
  --brand-light:#6BE6DA;
  --amber:#FFB454;
  --success:#38D39F;
  --warning:#FF8A5B;
  --error:#FF5F6D;
  --text:#E9F1FA;
  --text-2:#A7B6CC;
  --text-3:#6E8099;
  --glass:rgba(255,255,255,0.045);
  --glass-strong:rgba(255,255,255,0.07);
  --glass-border:rgba(120,190,255,0.14);
  --glass-border-hot:rgba(20,207,190,0.30);
  --radius-xs:8px;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:20px;
  --shadow-card:0 8px 32px rgba(0,0,0,0.35);
  --shadow-card-hover:0 16px 44px rgba(0,0,0,0.48);
  --shadow-glow:0 8px 24px rgba(20,207,190,0.35);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
  --ease:cubic-bezier(0.22,0.61,0.36,1);
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(120,190,255,0.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,190,255,0.045) 1px,transparent 1px);
  background-size:32px 32px,32px 32px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
img{max-width:100%;display:block;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
strong{font-weight:600;color:var(--text);}
::selection{background:rgba(20,207,190,0.28);color:#fff;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#080D18;}
::-webkit-scrollbar-thumb{background:rgba(20,207,190,0.32);border-radius:999px;border:2px solid #080D18;}
::-webkit-scrollbar-thumb:hover{background:rgba(20,207,190,0.55);}

/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 通用文本 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--brand-light);
  background:rgba(20,207,190,0.12);
  border:1px solid rgba(20,207,190,0.24);
  border-radius:999px;padding:4px 14px;
}
.section{padding:96px 0;position:relative;}
.section--alt{background:var(--bg-alt);}
.section--alt2{background:var(--bg-alt-2);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{
  position:relative;
  padding-left:16px;
  font-size:clamp(24px,2.6vw,34px);
  font-weight:600;
  line-height:1.35;
  letter-spacing:.01em;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;
  width:4px;height:1em;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
}
.section-head p{margin-top:16px;color:var(--text-2);font-size:16px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
.btn:active{transform:scale(.98);}
.btn:disabled,.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-primary{background:var(--brand);color:#04211F;box-shadow:var(--shadow-glow);border-color:var(--brand);}
.btn-primary:hover{background:var(--brand-light);border-color:var(--brand-light);transform:translateY(-2px);box-shadow:0 12px 30px rgba(20,207,190,.45);}
.btn-ghost{background:transparent;color:var(--brand-light);border-color:rgba(20,207,190,0.4);}
.btn-ghost:hover{background:rgba(20,207,190,0.10);transform:translateY(-2px);border-color:rgba(20,207,190,0.7);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-light);font-weight:600;font-size:15px;padding:0;
  transition:color .2s var(--ease);
}
.btn-link .arrow{transition:transform .2s var(--ease);display:inline-block;}
.btn-link:hover{color:var(--brand);}
.btn-link:hover .arrow{transform:translateX(4px);}
.btn.is-loading{pointer-events:none;opacity:.75;}
.spinner{
  width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(4,33,31,0.35);border-top-color:#04211F;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  padding:12px 0;
  background:transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(9,15,27,0.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:rgba(120,190,255,0.14);
}
.nav-card{
  display:flex;align-items:center;gap:20px;
  min-height:68px;
  padding:0 20px;
  border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 8px 32px rgba(0,0,0,0.35),inset 0 1px 0 rgba(255,255,255,0.06);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);
  background:rgba(20,207,190,0.10);
  border:1px solid rgba(20,207,190,0.38);
  box-shadow:0 0 18px rgba(20,207,190,0.22);
  flex-shrink:0;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text);}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:88px;height:44px;padding:0 14px;
  border-radius:10px;
  font-size:14px;font-weight:500;color:var(--text-2);
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-link:hover{background:rgba(20,207,190,0.10);color:var(--brand-light);}
.nav-link.active{
  color:var(--brand);
  border-color:rgba(20,207,190,0.45);
  background:rgba(20,207,190,0.08);
}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:10px;
  border:1px solid var(--glass-border);
  background:var(--glass);
  position:relative;flex-shrink:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--text);transform:translateX(-50%);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0;background:var(--brand);}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0;background:var(--brand);}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(9,15,27,0.96);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:80px 20px 40px;
  opacity:0;visibility:hidden;
  transform:translateY(-12px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  overflow-y:auto;
}
.nav-drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-close{
  position:absolute;top:20px;right:20px;
  width:44px;height:44px;border-radius:10px;
  border:1px solid var(--glass-border);background:var(--glass);
  color:var(--text);font-size:20px;line-height:1;
}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px;}
.drawer-item{
  display:flex;align-items:center;gap:8px;
  min-height:56px;padding:12px 14px;
  border-radius:12px;
  border:1px solid var(--glass-border);
  background:var(--glass);
  font-size:15px;color:var(--text-2);
}
.drawer-item.active{color:var(--brand);border-color:rgba(20,207,190,0.45);background:rgba(20,207,190,0.08);}
.drawer-cta{width:100%;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:150px 0 72px;
  overflow:hidden;
  border-bottom:1px solid rgba(120,190,255,0.10);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.30;
}
.hero-overlay{
  position:absolute;inset:0;
  background:
    radial-gradient(760px 420px at 18% 12%,rgba(20,207,190,0.16),transparent 62%),
    linear-gradient(180deg,rgba(10,16,30,0.72) 0%,rgba(10,16,30,0.90) 62%,var(--bg) 100%);
}
.hero-inner{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.breadcrumb a:hover{color:var(--brand-light);}
.breadcrumb .sep{color:rgba(110,128,153,0.6);}
.breadcrumb .current{color:var(--text);font-weight:600;}
.hero-brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--brand-light);
  margin-bottom:16px;
}
.hero-brand::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 12px var(--brand);
}
.hero h1{
  font-size:clamp(28px,4.6vw,52px);
  font-weight:700;line-height:1.2;letter-spacing:.01em;
  max-width:820px;
}
.hero h1 em{font-style:normal;color:var(--brand-light);}
.hero-sub{
  margin-top:20px;max-width:680px;
  font-size:17px;color:var(--text-2);line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:32px;}
.hero-points li{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--text-2);
}
.hero-points li::before{
  content:"";width:6px;height:6px;border-radius:2px;
  background:var(--brand);flex-shrink:0;
  transform:rotate(45deg);
}

/* ============ 流程布局 ============ */
.process-layout{
  display:grid;
  grid-template-columns:236px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.anchor-nav{position:sticky;top:104px;}
.anchor-nav h3{
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--text-3);margin-bottom:14px;
}
.anchor-list{display:flex;flex-direction:column;gap:6px;}
.anchor-list a{
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:10px;
  font-size:14px;color:var(--text-2);
  border:1px solid transparent;
  border-left:3px solid transparent;
  transition:all .2s var(--ease);
}
.anchor-list a .num{
  font-variant-numeric:tabular-nums;
  font-size:12px;color:var(--text-3);
}
.anchor-list a:hover{background:rgba(20,207,190,0.08);color:var(--brand-light);}
.anchor-list a.active{
  background:rgba(20,207,190,0.10);
  color:var(--brand);
  border-left-color:var(--brand);
}
.anchor-list a.active .num{color:var(--brand);}
.anchor-hint{
  margin-top:20px;padding:16px;border-radius:12px;
  background:var(--glass);border:1px solid var(--glass-border);
  font-size:13px;color:var(--text-3);line-height:1.75;
}

/* ============ 时间轴 ============ */
.timeline{position:relative;}
.timeline::before{
  content:"";position:absolute;left:19px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,rgba(20,207,190,0.55),rgba(20,207,190,0.12));
  border-radius:2px;
}
.step{position:relative;padding-left:64px;margin-bottom:28px;}
.step:last-child{margin-bottom:0;}
.step-dot{
  position:absolute;left:8px;top:26px;
  width:24px;height:24px;border-radius:50%;
  background:var(--bg);
  border:2px solid var(--brand);
  box-shadow:0 0 0 4px rgba(20,207,190,0.10);
  display:flex;align-items:center;justify-content:center;
}
.step-dot::after{
  content:"";width:8px;height:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px var(--brand);
}
.step-card{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  display:grid;
  grid-template-columns:minmax(0,1fr) 210px;
  gap:0;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.step-card:hover{
  transform:translateY(-4px);
  border-color:var(--glass-border-hot);
  box-shadow:var(--shadow-card-hover);
}
.step-body{padding:24px 26px;}
.step-num{
  display:inline-block;
  font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--amber);
  background:rgba(255,180,84,0.12);
  border:1px solid rgba(255,180,84,0.22);
  border-radius:999px;
  padding:2px 12px;
  margin-bottom:12px;
}
.step-body h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.step-body p{font-size:15px;color:var(--text-2);line-height:1.8;}
.step-meta{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;
}
.tag{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:999px;
  font-size:12.5px;font-weight:500;
  color:var(--brand-light);
  background:rgba(20,207,190,0.12);
  border:1px solid rgba(20,207,190,0.18);
}
.tag--amber{color:var(--amber);background:rgba(255,180,84,0.12);border-color:rgba(255,180,84,0.20);}
.tag--plain{color:var(--text-2);background:rgba(255,255,255,0.05);border-color:var(--glass-border);}
.step-figure{
  position:relative;
  background:linear-gradient(160deg,rgba(20,207,190,0.12),rgba(10,16,30,0.2));
  border-left:1px solid var(--glass-border);
  overflow:hidden;
}
.step-figure img{width:100%;height:100%;object-fit:cover;min-height:150px;opacity:.9;}

/* ============ 场景标签云 ============ */
.scene-panel{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  padding:36px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.scene-cloud{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.scene-chip{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;
  border-radius:999px;
  font-size:14px;color:var(--text-2);
  background:rgba(255,255,255,0.05);
  border:1px solid var(--glass-border);
  transition:all .2s var(--ease);
}
.scene-chip::before{
  content:"";width:5px;height:5px;border-radius:50%;
  background:var(--text-3);transition:background .2s var(--ease);
}
.scene-chip:hover{
  color:var(--brand-light);
  border-color:var(--glass-border-hot);
  background:rgba(20,207,190,0.10);
  transform:translateY(-2px);
}
.scene-chip:hover::before{background:var(--brand);}

/* ============ 数据条 ============ */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.metric{
  position:relative;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-md);
  padding:26px 22px 22px;
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.metric::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
}
.metric:hover{transform:translateY(-4px);border-color:var(--glass-border-hot);}
.metric-value{
  font-size:clamp(34px,3.4vw,48px);
  font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;
  color:var(--text);
}
.metric-value .unit{
  font-size:40%;color:var(--text-3);font-weight:500;margin-left:4px;
}
.metric-name{margin-top:8px;font-size:14px;color:var(--text-2);}
.metric-badge{
  display:inline-flex;align-items:center;
  margin-top:14px;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;
  color:var(--amber);background:rgba(255,180,84,0.12);
  font-variant-numeric:tabular-nums;
}

/* ============ FAQ ============ */
.faq-list{
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  background:var(--glass);
  overflow:hidden;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.faq-item{border-bottom:1px solid rgba(120,190,255,0.10);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  display:flex;align-items:center;gap:18px;
  width:100%;padding:22px 26px;
  text-align:left;
  transition:background .2s var(--ease);
}
.faq-q:hover{background:rgba(20,207,190,0.05);}
.faq-index{
  font-variant-numeric:tabular-nums;
  font-size:13px;color:var(--text-3);font-weight:600;
  flex-shrink:0;padding-left:0;
  border-left:3px solid transparent;
  transition:all .2s var(--ease);
  line-height:1.4;
}
.faq-q[aria-expanded="true"] .faq-index{
  color:var(--brand);
  border-left-color:var(--brand);
  padding-left:10px;
}
.faq-text{flex:1;font-size:16px;font-weight:600;color:var(--text);line-height:1.6;}
.faq-icon{
  flex-shrink:0;width:22px;height:22px;color:var(--text-3);
  transition:transform .25s var(--ease),color .2s var(--ease);
}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(180deg);color:var(--brand);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a-inner{
  padding:0 26px 24px 78px;
  font-size:15px;color:var(--text-2);line-height:1.85;
}

/* ============ CTA / 表单 ============ */
.cta-section{
  position:relative;
  background:var(--bg-alt-2);
  overflow:hidden;
  border-top:1px solid rgba(120,190,255,0.10);
  border-bottom:1px solid rgba(120,190,255,0.10);
}
.cta-glow{
  position:absolute;top:-160px;right:-120px;
  width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,207,190,0.14),transparent 66%);
  pointer-events:none;
}
.cta-layout{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.cta-copy h2{
  position:relative;padding-left:16px;
  font-size:clamp(24px,2.6vw,34px);font-weight:600;line-height:1.35;
}
.cta-copy h2::before{
  content:"";position:absolute;left:0;top:.28em;
  width:4px;height:1em;border-radius:2px;background:var(--brand);
}
.cta-copy p{margin-top:18px;color:var(--text-2);font-size:16px;}
.cta-list{margin-top:28px;display:flex;flex-direction:column;gap:12px;}
.cta-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--text-2);
}
.cta-list li::before{
  content:"";margin-top:10px;width:6px;height:6px;flex-shrink:0;
  background:var(--brand);border-radius:2px;transform:rotate(45deg);
}
.form-card{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:13.5px;color:var(--text-2);font-weight:500;}
.field input,
.field select,
.field textarea{
  height:44px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  background:rgba(9,15,27,0.65);
  border:1px solid var(--glass-border);
  color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  width:100%;
}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 18px) 19px,calc(100% - 13px) 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field input::placeholder,.field textarea::placeholder{color:rgba(110,128,153,0.75);}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(20,207,190,0.18);
  background:rgba(9,15,27,0.9);
}
.field.error input,
.field.error select,
.field.error textarea{border-color:var(--error);box-shadow:0 0 0 3px rgba(255,95,109,0.16);}
.field-msg{font-size:12.5px;color:var(--error);min-height:16px;line-height:1.4;}
.chip-group{display:flex;flex-wrap:wrap;gap:10px;}
.chip-radio{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 16px;border-radius:999px;
  font-size:13.5px;color:var(--text-2);
  background:rgba(255,255,255,0.05);
  border:1px solid var(--glass-border);
  cursor:pointer;
  transition:all .2s var(--ease);
}
.chip-radio input{position:absolute;opacity:0;pointer-events:none;}
.chip-radio:hover{border-color:var(--glass-border-hot);color:var(--brand-light);}
.chip-radio:has(input:checked){
  color:var(--brand);
  border-color:rgba(20,207,190,0.5);
  background:rgba(20,207,190,0.12);
}
.form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.form-note{grid-column:1 / -1;font-size:12.5px;color:var(--text-3);line-height:1.7;}
.form-note a{color:var(--brand-light);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--foot-bg);
  border-top:1px solid rgba(120,190,255,0.12);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:17px;font-weight:700;}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14px;color:var(--text-3);}
.footer-col a{color:var(--text-2);font-size:14px;display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--brand);transform:translateX(3px);}
.footer-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(120,190,255,0.10);
  display:flex;flex-wrap:wrap;gap:10px 24px;
  justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 28px;}
  .process-layout{grid-template-columns:210px minmax(0,1fr);gap:36px;}
}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-cta{display:none;}
  .nav-card{min-height:60px;}
  .section{padding:72px 0;}
  .hero{padding:132px 0 60px;}
  .process-layout{grid-template-columns:1fr;gap:28px;}
  .anchor-nav{position:static;top:auto;}
  .anchor-list{
    flex-direction:row;overflow-x:auto;gap:8px;
    padding-bottom:6px;
    -webkit-overflow-scrolling:touch;
  }
  .anchor-list a{
    flex:0 0 auto;white-space:nowrap;
    border-left:1px solid transparent;
    border-bottom:3px solid transparent;
    padding:10px 16px;
  }
  .anchor-list a.active{border-left-color:transparent;border-bottom-color:var(--brand);}
  .anchor-hint{display:none;}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-layout{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .timeline::before{left:13px;}
  .step{padding-left:52px;}
  .step-dot{left:2px;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .hero{padding:118px 0 48px;}
  .hero h1{font-size:clamp(26px,7vw,34px);}
  .hero-sub{font-size:15.5px;margin-top:16px;}
  .hero-actions{margin-top:24px;}
  .hero-points{margin-top:24px;gap:10px 20px;}
  .step-card{grid-template-columns:1fr;}
  .step-figure{border-left:0;border-top:1px solid var(--glass-border);}
  .step-figure img{min-height:170px;}
  .step-body{padding:20px;}
  .metrics{grid-template-columns:1fr;gap:16px;}
  .scene-panel{padding:24px;}
  .form-card{padding:22px;}
  .form-grid{grid-template-columns:1fr;}
  .faq-q{padding:18px 18px;gap:12px;}
  .faq-a-inner{padding:0 18px 20px 18px;}
  .faq-text{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{margin-top:32px;justify-content:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .nav-card{padding:0 12px;gap:12px;border-radius:14px;}
  .brand-text{font-size:15px;}
  .brand-mark{width:32px;height:32px;}
  .btn{height:48px;width:100%;}
  .btn.btn-inline{width:auto;}
  .hero-actions{gap:10px;}
  .drawer-grid{grid-template-columns:1fr;}
  .step{padding-left:44px;}
  .timeline::before{left:11px;}
  .step-dot{left:0;width:22px;height:22px;}
  .step-body h3{font-size:17px;}
  .scene-chip{height:36px;padding:0 14px;font-size:13px;}
  .metric-value{font-size:34px;}
}
@media (max-width:375px){
  .hero{padding:112px 0 40px;}
  .hero h1{font-size:24px;}
  .brand-text{font-size:14px;}
  .section-head h2{font-size:22px;}
}