/* roulang page: index */
:root{
  --bg-base:#070C12;
  --bg-deep:#0A121A;
  --surface:#0E1A22;
  --surface-glass:rgba(18,34,42,.58);
  --surface-solid:rgba(14,26,34,.92);
  --line:rgba(120,205,190,.14);
  --line-hover:rgba(120,205,190,.28);
  --brand:#1FD8A4;
  --brand-deep:#0EBA8A;
  --accent:#FF7A32;
  --text-1:#E8F2F0;
  --text-2:#9DB1B7;
  --text-3:#687E86;
  --ok:#2ED47A;
  --warn:#FFB020;
  --err:#FF5C5C;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-card:0 10px 30px -18px rgba(0,0,0,.9);
  --shadow-glow:0 0 0 1px rgba(31,216,164,.35),0 10px 34px -14px rgba(31,216,164,.65);
  --ease:180ms cubic-bezier(.4,0,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-num:"Inter","SF Mono",ui-monospace,monospace;
  --gap-section:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.ag-body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.88;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.ag-body::before{
  content:"";
  position:fixed;
  inset:0 0 auto 0;
  height:640px;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 320px at 8% -6%,rgba(31,216,164,.12),transparent 70%),
    radial-gradient(620px 300px at 92% -4%,rgba(255,122,50,.10),transparent 72%);
}
img{max-width:100%;display:block;height:auto;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease),opacity var(--ease);}
a:hover{color:#4BE8BC;}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;font-weight:600;line-height:1.24;color:var(--text-1);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(31,216,164,.28);color:#03120D;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.container--wide{max-width:1320px;}
.num{font-family:var(--font-num);font-weight:600;font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(9,17,23,.78);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:var(--radius-btn);
  display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(31,216,164,.20),rgba(255,122,50,.14));
  border:1px solid rgba(31,216,164,.34);
  box-shadow:0 0 22px -8px rgba(31,216,164,.6);
}
.brand-mark svg{width:19px;height:19px;fill:var(--brand);}
.brand-text{display:flex;flex-direction:column;line-height:1.16;}
.brand-text strong{font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--text-3);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px;flex:1 1 auto;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:20px 12px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);border-radius:2px;
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 10px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:rgba(9,20,27,.72);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.command-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,216,164,.16);}
.command-search svg{width:15px;height:15px;fill:var(--text-3);flex:0 0 auto;}
.command-search input{
  width:158px;border:0;background:transparent;color:var(--text-1);
  font-size:13.5px;font-family:var(--font-cn);padding:0;
}
.command-search input::placeholder{color:var(--text-3);}
.command-search kbd{
  font-family:var(--font-num);font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 5px;background:rgba(255,255,255,.02);
}
.icon-btn{
  width:38px;height:38px;border-radius:var(--radius-btn);
  display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(9,20,27,.6);
}
.icon-btn svg{width:16px;height:16px;fill:var(--text-2);}
.icon-btn:hover{border-color:var(--line-hover);background:rgba(31,216,164,.08);}
.icon-btn:hover svg{fill:var(--brand);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:rgba(9,20,27,.6);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text-1);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:17px;height:2px;background:var(--text-1);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-drawer{display:none;border-top:1px solid var(--line);background:rgba(8,16,22,.97);padding:16px 20px 22px;}
.nav-drawer.is-open{display:block;}
.nav-drawer .drawer-link{display:block;padding:13px 2px;font-size:15.5px;color:var(--text-2);border-bottom:1px solid var(--line);}
.nav-drawer .drawer-link.is-active{color:var(--brand);}
.nav-drawer .command-search{width:100%;margin-top:14px;}
.nav-drawer .command-search input{width:100%;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{background:var(--brand);color:#06110D;box-shadow:var(--shadow-glow);}
.btn-primary:hover{background:#3AE6B6;color:#06110D;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,216,164,.5),0 14px 38px -12px rgba(31,216,164,.8);}
.btn-ghost{background:transparent;color:var(--text-1);border-color:rgba(31,216,164,.4);}
.btn-ghost:hover{background:rgba(31,216,164,.10);color:var(--text-1);transform:translateY(-2px);}
.btn-plain{background:transparent;color:var(--text-2);padding:0 6px;height:auto;}
.btn-plain:hover{color:var(--brand);}
.btn-plain .arrow{transition:transform var(--ease);}
.btn-plain:hover .arrow{transform:translateX(4px);}
.btn-lg{height:48px;padding:0 26px;font-size:15.5px;}
.btn-sm{height:34px;padding:0 15px;font-size:13.5px;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;line-height:1.6;letter-spacing:.02em;
}
.badge-brand{background:rgba(31,216,164,.12);color:var(--brand);border:1px solid rgba(31,216,164,.26);}
.badge-accent{background:rgba(255,122,50,.13);color:#FFA06A;border:1px solid rgba(255,122,50,.26);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(31,216,164,.16);}

/* ---------- hero ---------- */
.hero{padding:76px 0 26px;position:relative;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;}
.hero-copy{max-width:660px;}
.hero h1{
  font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:700;
  margin:18px 0 16px;
}
.hero h1 .hl{
  background:linear-gradient(100deg,var(--brand),#7FF0CD 60%,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:16.5px;color:var(--text-2);max-width:520px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.hero-meta{
  margin-top:22px;font-size:13px;color:var(--text-3);
  display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;
}
.hero-meta .sep{color:rgba(120,205,190,.4);}
.hero-visual{position:relative;}
.hero-frame{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 24px 60px -30px rgba(0,0,0,.95),0 0 0 1px rgba(255,255,255,.03) inset;
  background:var(--surface);
}
.hero-frame img{width:100%;aspect-ratio:16/11;object-fit:cover;opacity:.92;}
.hero-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg,rgba(31,216,164,.16),transparent 42%,rgba(255,122,50,.16));
  pointer-events:none;
}
.hero-overlay{
  position:absolute;left:16px;right:16px;bottom:16px;
  display:flex;gap:10px;flex-wrap:wrap;
}
.hero-chip{
  background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:9px 12px;font-size:12.5px;color:var(--text-2);
  display:flex;align-items:center;gap:7px;
}
.hero-chip strong{color:var(--text-1);font-size:13px;}

/* ---------- sections ---------- */
.section{padding:var(--gap-section) 0 0;}
.section-head{max-width:720px;margin-bottom:38px;}
.section-head .kicker{
  font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--accent);font-family:var(--font-num);font-weight:600;
}
.section-head h2{font-size:clamp(24px,3vw,32px);margin:12px 0 12px;}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0;}

/* ---------- value ---------- */
.value-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.value-lead h3{font-size:clamp(21px,2.4vw,26px);line-height:1.4;margin-bottom:16px;}
.value-lead p{color:var(--text-2);font-size:15.5px;}
.value-stats{display:flex;gap:28px;margin-top:26px;flex-wrap:wrap;}
.value-stats div{display:flex;flex-direction:column;}
.value-stats b{font-family:var(--font-num);font-size:26px;font-weight:600;color:var(--brand);}
.value-stats span{font-size:12.5px;color:var(--text-3);}
.feature-blocks{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.feature-block{
  background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:border-color var(--ease),transform var(--ease);
}
.feature-block:hover{border-color:var(--line-hover);transform:translateY(-3px);}
.feature-block .idx{font-family:var(--font-num);font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.08em;}
.feature-block h4{font-size:17.5px;margin:10px 0 8px;}
.feature-block p{margin:0;font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* ---------- carousel ---------- */
.shots{position:relative;}
.shot-track{
  display:flex;gap:22px;overflow-x:auto;padding:6px 2px 22px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-card{
  flex:0 0 66%;scroll-snap-align:start;
  background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:border-color var(--ease),transform var(--ease);
}
.shot-card:hover{border-color:var(--line-hover);transform:translateY(-3px);}
.shot-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--surface);}
.shot-card img{width:100%;height:100%;object-fit:cover;opacity:.9;}
.shot-body{padding:20px 22px 22px;}
.shot-body h3{font-size:18px;margin-bottom:8px;}
.shot-body p{margin:0;font-size:14.5px;color:var(--text-2);}
.shot-nav{display:flex;gap:10px;align-items:center;margin-top:6px;}
.shot-arrow{
  width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid rgba(31,216,164,.4);background:transparent;
  display:grid;place-items:center;cursor:pointer;
  transition:background-color var(--ease),box-shadow var(--ease);
}
.shot-arrow svg{width:16px;height:16px;fill:var(--brand);}
.shot-arrow:hover{background:rgba(31,216,164,.1);box-shadow:0 0 0 1px rgba(31,216,164,.4),0 10px 26px -16px rgba(31,216,164,.8);}
.shot-dots{display:flex;gap:7px;margin-left:8px;}
.shot-dots i{width:7px;height:7px;border-radius:50%;background:rgba(120,205,190,.24);transition:background-color var(--ease),width var(--ease);}
.shot-dots i.on{background:var(--brand);width:20px;border-radius:var(--radius-pill);}

/* ---------- specs ---------- */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.spec-card{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(18,34,42,.66),rgba(12,22,29,.66));
  padding:24px 26px;box-shadow:var(--shadow-card);
  transition:border-color var(--ease);
}
.spec-card:hover{border-color:var(--line-hover);}
.spec-card h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.spec-row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px dashed rgba(120,205,190,.12);}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{font-size:14px;color:var(--text-3);}
.spec-row dd{margin:0;font-size:14px;color:var(--text-2);font-family:var(--font-num);font-weight:600;text-align:right;}
.spec-note{margin-top:20px;font-size:13px;color:var(--text-3);}

/* ---------- reviews ---------- */
.reviews{position:relative;}
.reviews::before{
  content:"";position:absolute;inset:-40px 0 auto 0;height:340px;pointer-events:none;
  background:radial-gradient(560px 260px at 70% 0%,rgba(31,216,164,.08),transparent 70%);
}
.review-wall{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.review-card{
  background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-card);
  transition:border-color var(--ease),transform var(--ease);
}
.review-card:hover{border-color:var(--line-hover);transform:translateY(-3px);}
.review-card:nth-child(even){margin-top:34px;}
.review-card .quote{font-size:34px;line-height:1;color:rgba(255,122,50,.5);font-family:Georgia,serif;}
.review-card p{font-size:15px;color:var(--text-2);margin:12px 0 18px;}
.review-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.review-user{display:flex;align-items:center;gap:10px;}
.avatar{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  background:rgba(31,216,164,.14);border:1px solid rgba(31,216,164,.26);
  color:var(--brand);font-size:13.5px;font-weight:600;
}
.review-user b{display:block;font-size:14px;font-weight:600;color:var(--text-1);}
.review-user span{font-size:12.5px;color:var(--text-3);}
.stars{color:var(--accent);font-size:14px;letter-spacing:2px;}

/* ---------- news / cms ---------- */
.news-section{padding:var(--gap-section) 0 0;}
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px;flex-wrap:wrap;}
.news-head h2{font-size:clamp(24px,3vw,32px);margin-top:11px;}
.news-head .kicker{font-size:12.5px;letter-spacing:.18em;color:var(--accent);font-family:var(--font-num);font-weight:600;}
.cms-list{display:grid;gap:18px;}
.cms-card{
  display:block;color:inherit;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:22px 24px;box-shadow:var(--shadow-card);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.cms-card:hover{border-color:var(--line-hover);transform:translateY(-3px);color:inherit;}
.cms-card-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px;}
.cms-card h3{font-size:18px;line-height:1.5;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-card .cms-excerpt{
  margin:10px 0 14px;font-size:14.5px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-card-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.cms-time{font-family:var(--font-num);font-size:13px;font-weight:600;color:var(--text-3);}
.cms-more{font-size:13.5px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.cms-card--lead{
  display:grid;grid-template-columns:5fr 7fr;gap:0;overflow:hidden;padding:0;
}
.cms-card--lead figure{margin:0;height:100%;min-height:220px;overflow:hidden;background:var(--surface);}
.cms-card--lead figure img{width:100%;height:100%;object-fit:cover;opacity:.9;}
.cms-card--lead .cms-lead-body{padding:24px 26px;}
.cms-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  background:rgba(12,22,29,.5);padding:52px 26px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:12px;min-height:260px;justify-content:center;
}
.cms-empty svg{width:34px;height:34px;fill:rgba(120,205,190,.4);}
.cms-empty p{margin:0;color:var(--text-2);font-size:15px;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:880px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;transition:border-color var(--ease);
}
.faq-item:hover{border-color:var(--line-hover);}
.faq-q{
  width:100%;text-align:left;background:transparent;border:0;cursor:pointer;
  padding:20px 22px;color:var(--text-1);font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-left:3px solid transparent;transition:border-color var(--ease),color var(--ease);
}
.faq-item.is-open .faq-q{border-left-color:var(--brand);color:var(--brand);}
.faq-q .plus{width:20px;height:20px;flex:0 0 auto;position:relative;}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--text-3);border-radius:2px;transition:transform var(--ease),background-color var(--ease);
}
.faq-q .plus::before{left:0;top:9px;width:20px;height:2px;}
.faq-q .plus::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .plus::before{background:var(--brand);}
.faq-item.is-open .plus::after{transform:scaleY(0);background:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms cubic-bezier(.4,0,.2,1);}
.faq-a p{margin:0;padding:0 22px 22px;font-size:15px;color:var(--text-2);}

/* ---------- download ---------- */
.download-panel{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:20px;
  background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:44px 40px;box-shadow:var(--shadow-card);
  text-align:center;
}
.download-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(140deg,rgba(255,122,50,.10),transparent 46%,rgba(31,216,164,.12));
}
.download-panel h2{font-size:clamp(23px,2.8vw,30px);margin-bottom:12px;position:relative;z-index:1;}
.download-panel p{color:var(--text-2);max-width:560px;margin:0 auto 26px;position:relative;z-index:1;}
.download-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:1;}
.download-checks{
  margin-top:24px;font-size:13px;color:var(--text-3);
  display:flex;gap:8px 16px;justify-content:center;flex-wrap:wrap;position:relative;z-index:1;
}

/* ---------- footer ---------- */
.site-footer{margin-top:var(--gap-section);border-top:1px solid var(--line);background:var(--bg-deep);position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:34px;padding:56px 0 40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:320px;margin:0 0 14px;}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em;}
.footer-col a,.footer-col li{display:block;font-size:14px;color:var(--text-2);padding:6px 0;}
.footer-col a:hover{color:var(--brand);}
.footer-contact div{font-size:14px;color:var(--text-2);padding:6px 0;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 34px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:16px;flex-wrap:wrap;}
.footer-bottom .links a{color:var(--text-3);}
.footer-bottom .links a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  :root{--gap-section:76px;}
  .hero-grid{grid-template-columns:6fr 6fr;gap:30px;}
  .value-grid{grid-template-columns:1fr;gap:32px;}
  .cms-card--lead{grid-template-columns:1fr;}
  .cms-card--lead figure{min-height:190px;}
  .review-card:nth-child(even){margin-top:0;}
  .main-nav{display:none;}
  .nav-tools .command-search,.nav-tools .icon-btn{display:none;}
  .nav-toggle{display:flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  body.ag-body{font-size:16px;}
  .hero{padding:52px 0 10px;}
  .feature-blocks{grid-template-columns:1fr;}
  .spec-grid{grid-template-columns:1fr;}
  .review-wall{grid-template-columns:1fr;}
  .shot-card{flex:0 0 86%;}
  .shot-nav{display:none;}
  .download-panel{padding:32px 20px;}
  .download-actions{flex-direction:column;}
  .download-actions .btn{width:100%;height:48px;justify-content:center;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .hero h1{font-size:clamp(27px,7.6vw,34px);}
  .hero-actions{width:100%;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:44px 0 30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .value-stats{gap:20px;}
  .nav-cta{display:none;}
}

/* roulang page: article */
:root{
  --bg-base:#070C12;
  --bg-deep:#0A121A;
  --surface:#0E1A22;
  --surface-glass:rgba(18,34,42,.58);
  --line:rgba(120,205,190,.14);
  --line-strong:rgba(120,205,190,.28);
  --brand:#1FD8A4;
  --brand-deep:#0EBA8A;
  --accent:#FF7A32;
  --text-1:#E8F2F0;
  --text-2:#9DB1B7;
  --text-3:#687E86;
  --success:#2ED47A;
  --warn:#FFB020;
  --error:#FF5C5C;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-badge:999px;
  --shadow-card:0 10px 30px -18px rgba(0,0,0,.9);
  --shadow-brand:0 0 0 1px rgba(31,216,164,.35),0 10px 34px -14px rgba(31,216,164,.65);
  --ease:cubic-bezier(.4,0,.2,1);
  --t:180ms cubic-bezier(.4,0,.2,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 12% -4%,rgba(31,216,164,.11),transparent 68%),
    radial-gradient(620px 380px at 92% 2%,rgba(255,122,50,.09),transparent 66%);
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--t);}
a:hover{color:#5FF0C4;}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;font-weight:600;color:var(--text-1);}
p{margin:0 0 1.2em;}
ul,ol{margin:0 0 1.2em;}
button,input{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:rgba(31,216,164,.28);}
.num{font-family:var(--mono);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--surface-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1);}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(31,216,164,.22),rgba(255,122,50,.14));
  border:1px solid var(--line-strong);
}
.brand-mark svg{width:19px;height:19px;fill:var(--brand);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:64px;
  padding:0 12px;
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 10px 0 12px;
  min-width:210px;
  background:rgba(9,20,26,.72);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:border-color var(--t),box-shadow var(--t);
}
.command-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,216,164,.14);}
.command-search i{color:var(--text-3);font-size:13px;}
.command-search input{
  flex:1 1 auto;min-width:0;
  background:transparent;border:0;padding:0;
  color:var(--text-1);font-size:13.5px;
}
.command-search input::placeholder{color:var(--text-3);}
.command-search input:focus{outline:none;}
.kbd{
  font-family:var(--mono);font-size:11px;color:var(--text-3);
  border:1px solid var(--line);border-radius:6px;
  padding:1px 5px;background:rgba(255,255,255,.03);
}
.icon-btn{
  width:38px;height:38px;border-radius:var(--radius-btn);
  display:grid;place-items:center;
  border:1px solid var(--line);
  background:rgba(9,20,26,.5);
  color:var(--text-2);
  transition:border-color var(--t),color var(--t),background var(--t);
}
.icon-btn:hover{border-color:var(--line-strong);color:var(--brand);background:rgba(31,216,164,.08);}
.menu-toggle{
  display:none;
  width:40px;height:40px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:rgba(9,20,26,.5);
  color:var(--text-1);cursor:pointer;
}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;
  font-size:14.5px;font-weight:600;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
  white-space:nowrap;
}
.btn-lg{height:48px;padding:0 24px;font-size:15.5px;}
.btn-sm{height:34px;padding:0 14px;font-size:13.5px;}
.btn-primary{
  background:var(--brand);color:#06110D;border-color:rgba(31,216,164,.5);
  box-shadow:var(--shadow-brand);
}
.btn-primary:hover{background:#37E7B6;color:#06110D;transform:translateY(-2px);}
.btn-ghost{
  background:transparent;color:var(--text-1);
  border-color:rgba(31,216,164,.4);
}
.btn-ghost:hover{background:rgba(31,216,164,.10);border-color:var(--brand);color:var(--text-1);transform:translateY(-2px);}
.btn-weak{
  background:transparent;border-color:transparent;color:var(--brand);padding:0 6px;
}
.btn-weak i{transition:transform var(--t);}
.btn-weak:hover i{transform:translateX(4px);}
.btn-block{width:100%;}

/* Mobile drawer */
.mobile-drawer{
  display:none;
  border-bottom:1px solid var(--line);
  background:rgba(10,18,26,.96);
  backdrop-filter:blur(14px);
  padding:16px 0 20px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .command-search{width:100%;min-width:0;margin-bottom:12px;}
.drawer-link{
  display:block;padding:11px 2px;
  color:var(--text-2);font-size:15px;
  border-bottom:1px solid var(--line);
}
.drawer-link:hover{color:var(--brand);}

/* ============ Breadcrumb ============ */
.page-shell{padding:36px 0 0;}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:26px;
}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--text-3);font-size:11px;}
.crumbs .current{color:var(--text-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ Article header ============ */
.article-header{
  position:relative;
  padding:32px 32px 34px;
  border:1px solid var(--line);
  border-radius:20px;
  background:var(--surface-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.article-header::after{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.14;
  mask-image:linear-gradient(105deg,rgba(0,0,0,.9),transparent 72%);
  -webkit-mask-image:linear-gradient(105deg,rgba(0,0,0,.9),transparent 72%);
  pointer-events:none;
}
.article-header > *{position:relative;z-index:1;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;
  padding:5px 12px;
  border-radius:var(--radius-badge);
  background:rgba(255,122,50,.14);
  border:1px solid rgba(255,122,50,.3);
  color:#FFA06B;
  margin-bottom:18px;
}
.article-header h1{
  font-size:clamp(28px,3.6vw,40px);
  line-height:1.28;
  font-weight:700;
  max-width:22ch;
  margin-bottom:18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;
  font-size:13.5px;color:var(--text-3);
}
.article-meta .m{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{font-size:12px;color:var(--text-3);}

/* ============ Article body ============ */
.article-wrap{padding:44px 0 0;}
.article-body{
  max-width:800px;
  margin:0 auto;
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
}
.article-body > p:first-of-type{font-size:17.5px;color:var(--text-1);}
.article-body h2{
  position:relative;
  padding-left:16px;
  margin:48px 0 18px;
  font-size:clamp(22px,2.4vw,28px);
  font-weight:600;
  color:var(--text-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:2px;background:var(--brand);
  box-shadow:0 0 14px rgba(31,216,164,.55);
}
.article-body h3{
  margin:32px 0 12px;
  font-size:22px;font-weight:600;color:var(--text-1);
}
.article-body strong{color:var(--text-1);font-weight:600;}
.article-body a{
  color:var(--brand);
  border-bottom:1px dashed rgba(31,216,164,.55);
}
.article-body a:hover{border-bottom-style:solid;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.6em;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.74em;width:6px;height:6px;
  border-radius:50%;background:var(--brand);
}
.article-body ol{list-style:none;padding-left:0;counter-reset:ol;}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:.6em;counter-increment:ol;}
.article-body ol li::before{
  content:counter(ol,decimal-leading-zero);
  position:absolute;left:0;top:.05em;
  font-family:var(--mono);font-size:14px;font-weight:600;color:var(--accent);
}
.article-body blockquote{
  margin:28px 0;
  padding:20px 24px;
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  background:var(--surface-glass);
  color:var(--text-1);
  font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px 0 10px;}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;color:var(--text-3);text-align:center;
}
.article-body hr{
  border:0;border-top:1px solid var(--line);margin:40px 0;
}
.article-body pre{
  background:#060B10;
  border:1px solid var(--line);
  border-radius:12px;
  padding:18px 20px;
  overflow-x:auto;
  font-family:var(--mono);
  font-size:14px;
  line-height:1.7;
  color:#B7E8DA;
}
.article-body code{
  font-family:var(--mono);
  font-size:.92em;
  background:rgba(31,216,164,.10);
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
  color:#8FF0CE;
}
.article-body pre code{background:none;border:0;padding:0;color:inherit;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15.5px;}
.article-body th,.article-body td{
  padding:12px 14px;text-align:left;
  border-bottom:1px solid var(--line);
}
.article-body th{color:var(--text-1);font-weight:600;background:rgba(31,216,164,.05);}

/* Empty state */
.article-empty{
  max-width:800px;margin:0 auto;text-align:center;
  padding:56px 28px;
  border:1px solid var(--line);
  border-radius:20px;
  background:var(--surface-glass);
  box-shadow:var(--shadow-card);
}
.article-empty .ico{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  display:grid;place-items:center;
  background:rgba(31,216,164,.1);border:1px solid var(--line-strong);
  color:var(--brand);font-size:22px;
}
.article-empty h2{font-size:24px;margin-bottom:10px;}
.article-empty p{color:var(--text-2);margin-bottom:22px;}

/* ============ Article footer ============ */
.article-footer{
  max-width:800px;margin:48px auto 0;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;padding:5px 12px;
  border-radius:var(--radius-badge);
  background:rgba(255,122,50,.12);
  border:1px solid rgba(255,122,50,.26);
  color:#FFA06B;
}
.tag.brand{
  background:rgba(31,216,164,.12);
  border-color:rgba(31,216,164,.28);
  color:#6FEBC5;
}
.back-row{
  display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;
}

/* ============ Related ============ */
.related{padding:76px 0 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;
}
.section-head h2{font-size:clamp(24px,2.6vw,30px);}
.section-head p{margin:6px 0 0;color:var(--text-2);font-size:15px;}
.mini-card{
  display:block;height:100%;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  color:var(--text-1);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.mini-card:hover{border-color:var(--line-strong);transform:translateY(-4px);color:var(--text-1);}
.mini-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--surface);}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.mini-card:hover .thumb img{transform:scale(1.05);}
.mini-card .body{padding:22px 24px 24px;}
.mini-card h3{font-size:18px;line-height:1.5;margin-bottom:10px;}
.mini-card .desc{
  font-size:14.5px;color:var(--text-2);line-height:1.75;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-card .foot{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}
.mini-card .foot .arrow{color:var(--brand);transition:transform var(--t);}
.mini-card:hover .foot .arrow{transform:translateX(4px);}
.grid-3{display:grid;gap:22px;grid-template-columns:repeat(3,minmax(0,1fr));}

/* ============ CTA panel ============ */
.cta-wrap{padding:88px 0 96px;}
.cta-panel{
  position:relative;
  padding:44px 40px;
  border:1px solid var(--line);
  border-radius:20px;
  background:var(--surface-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.cta-panel::after{
  content:"";
  position:absolute;inset:-40% -10% -40% 40%;
  background:linear-gradient(120deg,rgba(255,122,50,.16),rgba(31,216,164,.16));
  filter:blur(30px);
  pointer-events:none;
}
.cta-panel > *{position:relative;z-index:1;}
.cta-panel h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:10px;}
.cta-panel p{color:var(--text-2);max-width:60ch;margin-bottom:24px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-meta{
  margin-top:22px;font-family:var(--mono);font-size:13px;color:var(--text-3);
  display:flex;flex-wrap:wrap;gap:10px;
}
.cta-meta span{white-space:nowrap;}

/* ============ Footer ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-deep);
  padding:64px 0 0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  gap:34px;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  padding-bottom:44px;
}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin:16px 0 16px;max-width:34ch;}
.badge-brand{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;padding:5px 12px;
  border-radius:var(--radius-badge);
  background:rgba(31,216,164,.12);
  border:1px solid rgba(31,216,164,.28);
  color:#6FEBC5;
}
.badge-brand .dot{
  width:7px;height:7px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px rgba(31,216,164,.9);
}
.footer-col h4{
  font-size:15px;margin-bottom:16px;color:var(--text-1);
}
.footer-col a{
  display:block;font-size:14.5px;color:var(--text-2);
  padding:6px 0;
}
.footer-col a:hover{color:var(--brand);}
.footer-contact div{color:var(--text-2);font-size:14px;margin-bottom:10px;line-height:1.75;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-bottom .links a{color:var(--text-3);}
.footer-bottom .links a:hover{color:var(--brand);}

/* ============ Responsive ============ */
@media (max-width:1100px){
  .command-search{min-width:170px;}
}
@media (max-width:1024px){
  .main-nav{display:none;}
  .command-search{display:none;}
  .menu-toggle{display:grid;place-items:center;}
  .article-header{padding:28px 24px 30px;}
  .article-header h1{max-width:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  body{font-size:16.5px;line-height:1.88;}
  .page-shell{padding-top:26px;}
  .article-header{border-radius:16px;}
  .article-body{max-width:none;font-size:16.5px;}
  .article-footer{max-width:none;}
  .related{padding-top:56px;}
  .grid-3{grid-template-columns:1fr;}
  .cta-panel{padding:32px 22px;border-radius:16px;}
  .cta-actions .btn{width:100%;}
  .cta-wrap{padding:60px 0 68px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .header-inner{gap:12px;}
  .brand-text em{letter-spacing:.1em;}
  .crumbs .current{max-width:28ch;}
  .article-header h1{font-size:26px;}
  .back-row .btn{width:100%;}
  .article-body h2{margin-top:38px;font-size:22px;}
}

/* roulang page: category1 */
:root{
  --bg-base:#070C12;
  --bg-deep:#0A121A;
  --surface:#0E1A22;
  --surface-glass:rgba(18,34,42,.58);
  --line:rgba(120,205,190,.14);
  --line-hover:rgba(120,205,190,.28);
  --brand:#1FD8A4;
  --brand-deep:#0EBA8A;
  --accent:#FF7A32;
  --text-1:#E8F2F0;
  --text-2:#9DB1B7;
  --text-3:#687E86;
  --ok:#2ED47A;
  --warn:#FFB020;
  --err:#FF5C5C;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-card:0 10px 30px -18px rgba(0,0,0,.9);
  --shadow-brand:0 0 0 1px rgba(31,216,164,.35),0 10px 34px -14px rgba(31,216,164,.65);
  --ease:180ms cubic-bezier(.4,0,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SF Mono","Roboto Mono",ui-monospace,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.88;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),border-color var(--ease);}
a:hover{color:#5cf0c4;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:.01em;line-height:1.25;font-weight:600;color:var(--text-1);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus{outline:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(31,216,164,.28);color:#fff;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:1024px){
  .container{padding:0 32px;}
}

/* ============ 顶部氛围光 ============ */
.page-glow{
  position:fixed;
  inset:0 0 auto 0;
  height:620px;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 320px at 12% 0%,rgba(31,216,164,.12),transparent 68%),
    radial-gradient(620px 300px at 92% 4%,rgba(255,122,50,.09),transparent 70%);
}
.page-grid-lines{
  position:fixed;
  inset:0 0 auto 0;
  height:620px;
  pointer-events:none;
  z-index:0;
  opacity:.35;
  background-image:
    linear-gradient(rgba(120,205,190,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,205,190,.045) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,12,18,.78);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:64px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text-1);
}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(140deg,rgba(31,216,164,.24),rgba(14,26,34,.9));
  border:1px solid var(--line-hover);
  box-shadow:0 0 24px -10px rgba(31,216,164,.8);
}
.brand-mark svg{width:20px;height:20px;fill:var(--brand);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--text-3);letter-spacing:.16em;}

.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:12px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(31,216,164,.06);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);}
.nav-link.is-active::after{transform:scaleX(1);}

.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.command-search{
  position:relative;
  display:flex;
  align-items:center;
  width:220px;
  height:38px;
  padding:0 10px 0 34px;
  border-radius:var(--radius-btn);
  background:rgba(14,26,34,.72);
  border:1px solid var(--line);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.command-search:focus-within{
  border-color:rgba(31,216,164,.6);
  box-shadow:0 0 0 4px rgba(31,216,164,.12);
}
.command-search svg{
  position:absolute;left:11px;top:50%;transform:translateY(-50%);
  width:15px;height:15px;fill:var(--text-3);
}
.command-search input{
  width:100%;height:100%;
  border:0;background:transparent;
  color:var(--text-1);
  font-size:13.5px;
  margin:0;
}
.command-search input::placeholder{color:var(--text-3);}
.kbd{
  flex:0 0 auto;
  margin-left:6px;
  padding:2px 6px;
  font-family:var(--font-num);
  font-size:11px;
  color:var(--text-3);
  border:1px solid var(--line);
  border-radius:6px;
  background:rgba(255,255,255,.02);
}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:rgba(14,26,34,.6);
  color:var(--text-2);
  cursor:pointer;
  transition:border-color var(--ease),color var(--ease),transform var(--ease);
}
.icon-btn svg{width:17px;height:17px;fill:currentColor;}
.icon-btn:hover{border-color:var(--line-hover);color:var(--brand);transform:translateY(-1px);}

.hamburger{display:none;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:40px;
  padding:0 18px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:14.5px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn svg{width:16px;height:16px;fill:currentColor;}
.btn-lg{height:48px;padding:0 24px;font-size:15.5px;}
.btn-sm{height:32px;padding:0 14px;font-size:13px;}
.btn-primary{
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  color:#06110D;
  box-shadow:var(--shadow-brand);
}
.btn-primary:hover{
  color:#06110D;
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(31,216,164,.55),0 16px 40px -14px rgba(31,216,164,.85);
}
.btn-ghost{
  background:rgba(31,216,164,.04);
  border-color:rgba(31,216,164,.4);
  color:var(--brand);
}
.btn-ghost:hover{
  background:rgba(31,216,164,.10);
  color:var(--brand);
  transform:translateY(-2px);
}
.btn-quiet{
  background:transparent;
  color:var(--text-2);
  padding:0 6px;
}
.btn-quiet span{transition:transform var(--ease);display:inline-flex;}
.btn-quiet:hover{color:var(--brand);}
.btn-quiet:hover span{transform:translateX(4px);}

/* 徽章 */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 11px;
  border-radius:var(--radius-pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
}
.badge-brand{background:rgba(31,216,164,.12);color:var(--brand);border:1px solid rgba(31,216,164,.24);}
.badge-accent{background:rgba(255,122,50,.12);color:var(--accent);border:1px solid rgba(255,122,50,.24);}
.badge-soft{background:rgba(157,177,183,.10);color:var(--text-2);border:1px solid var(--line);}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 10px currentColor;}

/* 移动抽屉 */
.drawer{display:none;}
.drawer-panel{
  display:grid;
  gap:8px;
  padding:14px 0 20px;
}
.drawer-panel .nav-link{height:44px;font-size:15px;justify-content:flex-start;}
.drawer .command-search{width:100%;}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:26px 0 0;
  font-size:13px;
  color:var(--text-3);
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--text-3);opacity:.6;}
.crumb .current{color:var(--text-2);}

/* ============ 页面头部 ============ */
.cat-hero{
  position:relative;
  z-index:1;
  padding:34px 0 0;
}
.cat-hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:44px;
  align-items:center;
  padding:36px 0 8px;
}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,46px);
  line-height:1.15;
  font-weight:700;
  margin:18px 0 14px;
}
.cat-hero .lede{
  font-size:16.5px;
  color:var(--text-2);
  max-width:38ch;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  margin-top:26px;
  font-family:var(--font-num);
  font-size:13px;
  font-weight:600;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.hero-meta b{color:var(--brand);font-weight:600;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

.hero-visual{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line-hover);
  box-shadow:0 30px 70px -40px rgba(0,0,0,1),0 0 0 1px rgba(31,216,164,.08);
}
.hero-visual img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-visual::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,18,.05),rgba(7,12,18,.72));
}
.hero-caption{
  position:absolute;
  left:18px;right:18px;bottom:16px;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 16px;
  border-radius:12px;
  background:var(--surface-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
}
.hero-caption strong{color:var(--text-1);font-weight:600;}
.hero-caption .num{font-family:var(--font-num);font-weight:600;color:var(--brand);font-variant-numeric:tabular-nums;}

/* ============ 通用板块 ============ */
.section{
  position:relative;
  z-index:1;
  padding:88px 0;
}
.section-tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  font-weight:600;
  margin-bottom:12px;
}
.section-head p{color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-num);
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:14px;
}

/* ============ 双栏：锚点目录 + 内容 ============ */
.cat-layout{
  display:grid;
  grid-template-columns:262px minmax(0,1fr);
  gap:52px;
  align-items:start;
}
.anchor-nav{
  position:sticky;
  top:88px;
  padding:24px;
  border-radius:var(--radius-card);
  background:var(--surface-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),0 0 0 1px var(--line);
}
.anchor-nav h2{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--text-3);
  font-weight:600;
  margin-bottom:14px;
}
.anchor-nav a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  border-left:2px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.anchor-nav a .idx{
  font-family:var(--font-num);
  font-size:11.5px;
  font-weight:600;
  color:var(--text-3);
}
.anchor-nav a:hover{
  background:rgba(31,216,164,.07);
  color:var(--text-1);
  border-left-color:var(--accent);
}
.anchor-nav a:hover .idx{color:var(--accent);}

.content-panel{
  padding:30px 32px;
  border-radius:var(--radius-card);
  background:rgba(14,26,34,.55);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),0 0 0 1px var(--line);
}
.content-block + .content-block{margin-top:44px;}
.content-block h2{
  position:relative;
  font-size:23px;
  font-weight:600;
  padding-left:16px;
  margin-bottom:16px;
  scroll-margin-top:96px;
}
.content-block h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
}
.content-block h3{
  font-size:18px;
  font-weight:600;
  margin:26px 0 10px;
}
.content-block p{color:var(--text-2);font-size:16.5px;line-height:1.9;}
.content-block p + p{margin-top:14px;}
.content-block strong{color:var(--text-1);font-weight:600;}

.figure{
  margin:24px 0 0;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-deep);
}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.figure figcaption{
  padding:12px 18px;
  font-size:13px;
  color:var(--text-3);
  border-top:1px solid var(--line);
}

.spec-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:22px;}
.spec-item{
  padding:18px 20px;
  border-radius:12px;
  background:rgba(10,18,26,.72);
  border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease);
}
.spec-item:hover{border-color:var(--line-hover);transform:translateY(-2px);}
.spec-item .k{font-size:13px;color:var(--text-3);margin-bottom:8px;}
.spec-item .v{
  font-family:var(--font-num);
  font-size:15px;
  font-weight:600;
  color:var(--text-1);
  font-variant-numeric:tabular-nums;
}
.spec-item .v small{font-family:var(--font-cn);font-size:13px;font-weight:400;color:var(--text-2);}

.step-list{display:grid;gap:14px;margin-top:22px;}
.step{
  display:grid;
  grid-template-columns:44px minmax(0,1fr);
  gap:16px;
  padding:20px 22px;
  border-radius:14px;
  background:rgba(10,18,26,.6);
  border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.step:hover{border-color:var(--line-hover);transform:translateY(-2px);background:rgba(14,26,34,.75);}
.step-num{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:12px;
  font-family:var(--font-num);
  font-size:15px;
  font-weight:600;
  color:var(--accent);
  background:rgba(255,122,50,.10);
  border:1px solid rgba(255,122,50,.22);
}
.step h3{font-size:17px;margin:0 0 6px;}
.step p{font-size:15px;color:var(--text-2);line-height:1.85;margin:0;}

.check-list{display:grid;gap:12px;margin-top:20px;}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:15.5px;
  color:var(--text-2);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:6px;top:.72em;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 12px rgba(31,216,164,.9);
}
.check-list li b{color:var(--text-1);font-weight:600;}

/* ============ 中部 CTA 玻璃条 ============ */
.cta-bar{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  margin:52px 0;
  padding:30px 32px;
  border-radius:var(--radius-card);
  background:var(--surface-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line-hover);
  box-shadow:var(--shadow-card),0 0 0 1px rgba(31,216,164,.12);
}
.cta-bar::after{
  content:"";
  position:absolute;
  inset:auto -20% -80% -20%;
  height:180px;
  background:linear-gradient(90deg,rgba(255,122,50,.14),rgba(31,216,164,.14));
  filter:blur(46px);
  transform:rotate(-6deg);
  pointer-events:none;
}
.cta-bar-text{position:relative;z-index:2;max-width:56ch;}
.cta-bar-text h2{font-size:21px;margin-bottom:8px;}
.cta-bar-text p{font-size:14.5px;color:var(--text-2);}
.cta-bar-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;display:grid;gap:14px;}
.faq-item{
  border-radius:14px;
  background:rgba(14,26,34,.6);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
.faq-item.is-open{border-color:var(--line-hover);background:rgba(18,34,42,.72);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  background:transparent;
  border:0;
  border-left:3px solid transparent;
  color:var(--text-1);
  font-size:16.5px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:border-color var(--ease),color var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-item.is-open .faq-q{border-left-color:var(--brand);color:var(--brand);}
.faq-icon{
  flex:0 0 auto;
  width:22px;height:22px;
  position:relative;
  border-radius:50%;
  border:1px solid var(--line-hover);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:currentColor;
  transform:translate(-50%,-50%);
  transition:transform var(--ease),opacity var(--ease);
}
.faq-icon::before{width:10px;height:1.5px;}
.faq-icon::after{width:1.5px;height:10px;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 280ms cubic-bezier(.4,0,.2,1);
}
.faq-a-inner{
  padding:0 24px 22px;
  color:var(--text-2);
  font-size:15.5px;
  line-height:1.9;
}

/* ============ 底部下载面板 ============ */
.download-panel{
  position:relative;
  overflow:hidden;
  padding:44px 40px;
  border-radius:var(--radius-card);
  background:var(--surface-glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line-hover);
  box-shadow:var(--shadow-card),0 0 0 1px rgba(31,216,164,.1);
  text-align:center;
}
.download-panel::after{
  content:"";
  position:absolute;
  inset:auto -30% -60% -30%;
  height:220px;
  background:linear-gradient(90deg,rgba(255,122,50,.16),rgba(31,216,164,.16));
  filter:blur(58px);
  transform:rotate(-5deg);
  pointer-events:none;
}
.download-panel > *{position:relative;z-index:2;}
.download-panel h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:12px;}
.download-panel p{color:var(--text-2);max-width:60ch;margin:0 auto 26px;font-size:16px;}
.download-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.checksum{
  margin-top:22px;
  font-family:var(--font-num);
  font-size:13px;
  font-weight:600;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.checksum b{color:var(--brand);font-weight:600;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:96px;
  padding:64px 0 28px;
  background:linear-gradient(180deg,rgba(10,18,26,0),rgba(10,18,26,.9));
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;
  gap:40px;
}
.footer-brand p{
  margin:16px 0 18px;
  color:var(--text-2);
  font-size:14.5px;
  max-width:34ch;
  line-height:1.85;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text-1);
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-col a{
  display:block;
  padding:6px 0;
  font-size:14.5px;
  color:var(--text-2);
}
.footer-col a:hover{color:var(--brand);transform:translateX(3px);}
.footer-contact div{
  font-size:14px;
  color:var(--text-2);
  line-height:1.9;
  margin-bottom:8px;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom .links a{color:var(--text-3);}
.footer-bottom .links a:hover{color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .command-search{width:176px;}
  .nav-link{padding:0 10px;font-size:14px;}
}
@media (max-width:1024px){
  .section{padding:72px 0;}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero .lede{max-width:none;}
  .cat-layout{grid-template-columns:1fr;gap:32px;}
  .anchor-nav{position:static;}
  .anchor-nav a{border-left:0;border-bottom:1px solid var(--line);border-radius:0;}
  .anchor-nav a:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .main-nav{margin-left:6px;}
}
@media (max-width:900px){
  .main-nav{display:none;}
  .command-search{display:none;}
  .icon-btn{display:none;}
  .hamburger{display:grid;}
  .drawer{display:none;}
  .drawer.is-open{
    display:block;
    border-top:1px solid var(--line);
    background:rgba(7,12,18,.96);
    padding:8px 0 20px;
  }
  .header-inner{flex-wrap:wrap;}
}
@media (max-width:640px){
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .content-panel{padding:22px 20px;}
  .spec-list{grid-template-columns:1fr;}
  .step{grid-template-columns:38px minmax(0,1fr);padding:18px;}
  .step-num{width:38px;height:38px;font-size:14px;}
  .cta-bar{padding:24px 22px;}
  .cta-bar-actions,.download-actions{width:100%;flex-direction:column;}
  .cta-bar-actions .btn,.download-actions .btn{width:100%;height:48px;}
  .download-panel{padding:32px 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
  .hero-caption{flex-direction:column;align-items:flex-start;gap:6px;}
  .brand-text strong{font-size:15.5px;}
}
@media (min-width:1440px){
  .container{max-width:1320px;}
}

/* roulang page: category2 */
:root{
  --bg-base:#070C12;
  --bg-deep:#0A121A;
  --surface:#0E1A22;
  --surface-glass:rgba(18,34,42,.58);
  --line:rgba(120,205,190,.14);
  --line-strong:rgba(120,205,190,.28);
  --brand:#1FD8A4;
  --brand-deep:#0EBA8A;
  --accent:#FF7A32;
  --text-1:#E8F2F0;
  --text-2:#9DB1B7;
  --text-3:#687E86;
  --ok:#2ED47A;
  --warn:#FFB020;
  --err:#FF5C5C;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-card:0 10px 30px -18px rgba(0,0,0,.9);
  --shadow-glow:0 0 0 1px rgba(31,216,164,.35),0 10px 34px -14px rgba(31,216,164,.65);
  --ease:cubic-bezier(.4,0,.2,1);
  --t:180ms var(--ease);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-mono:"Inter","SF Mono",ui-monospace,"Menlo","Consolas",monospace;
}

/* ---------- reset / base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(760px 420px at 10% -8%,rgba(31,216,164,.12),transparent 62%),
    radial-gradient(680px 400px at 92% -12%,rgba(255,122,50,.10),transparent 60%);
  background-repeat:no-repeat;
  background-position:top center;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--t),border-color var(--t)}
a:hover{color:#3BEBBE}
h1,h2,h3,h4{margin:0 0 14px;color:var(--text-1);font-weight:600;letter-spacing:.01em;line-height:1.3}
h1{font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:700}
h2{font-size:clamp(24px,2.7vw,32px)}
h3{font-size:20px}
p{margin:0 0 1.2em;color:var(--text-2)}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer}
input,button,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:16px;top:-60px;z-index:200;padding:10px 18px;border-radius:var(--radius-btn);background:var(--brand);color:#06110D;font-weight:600;transition:top var(--t)}
.skip-link:focus{top:12px;color:#06110D}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}
.section{padding:88px 0}
.section-tight{padding:52px 0}
@media (min-width:641px) and (max-width:1024px){.section{padding:72px 0}}
@media (max-width:640px){.section{padding:56px 0}.section-tight{padding:40px 0}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 22px;border:1px solid transparent;border-radius:var(--radius-btn);font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;cursor:pointer;transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),color var(--t)}
.btn-lg{height:48px;padding:0 28px;font-size:16px}
.btn-md{height:40px}
.btn-sm{height:32px;padding:0 16px;font-size:13px}
.btn-primary{background:var(--brand);color:#06110D;box-shadow:var(--shadow-glow)}
.btn-primary:hover,.btn-primary:focus{background:#33E6B4;color:#06110D;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,216,164,.5),0 16px 40px -14px rgba(31,216,164,.8)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(31,216,164,.4);color:var(--text-1)}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(31,216,164,.10);border-color:var(--brand);color:var(--text-1);transform:translateY(-2px)}
.btn-weak{height:auto;padding:0;background:transparent;color:var(--brand);font-weight:600;gap:6px}
.btn-weak span{transition:transform var(--t)}
.btn-weak:hover span{transform:translateX(4px)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border:1px solid transparent;border-radius:var(--radius-pill);font-size:12px;font-weight:600;letter-spacing:.02em}
.badge-brand{background:rgba(31,216,164,.12);color:var(--brand);border-color:rgba(31,216,164,.28)}
.badge-accent{background:rgba(255,122,50,.12);color:var(--accent);border-color:rgba(255,122,50,.28)}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(31,216,164,.18)}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:90;background:rgba(7,12,18,.86);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1)}
.brand:hover{color:var(--text-1)}
.brand-mark{width:34px;height:34px;flex:0 0 auto;display:grid;place-items:center;border-radius:10px;border:1px solid rgba(31,216,164,.28);background:linear-gradient(160deg,rgba(31,216,164,.22),rgba(255,122,50,.14))}
.brand-mark svg{width:20px;height:20px;fill:var(--brand)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.16em;color:var(--text-3)}
.header-inner .main-nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{position:relative;display:inline-block;padding:20px 12px;font-size:14px;color:var(--text-2);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:12px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.command-search{position:relative;display:flex;align-items:center;height:40px;padding:0 10px 0 34px;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface-glass);transition:border-color var(--t),box-shadow var(--t)}
.command-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(31,216,164,.14)}
.command-search .search-icon{position:absolute;left:11px;width:15px;height:15px;fill:var(--text-3)}
.command-search input[type=text]{width:176px;height:36px;margin:0;padding:0;border:0;background:transparent;color:var(--text-1);font-size:13px;box-shadow:none}
.command-search input[type=text]:focus{background:transparent;box-shadow:none;border:0}
.command-search input::placeholder{color:var(--text-3)}
.kbd{flex:0 0 auto;margin-left:6px;padding:2px 6px;border:1px solid var(--line);border-radius:6px;font-family:var(--font-mono);font-size:11px;color:var(--text-3)}
.icon-btn{width:40px;height:40px;flex:0 0 auto;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface-glass);color:var(--text-2);transition:var(--t)}
.icon-btn:hover{color:var(--brand);border-color:var(--line-strong)}
.icon-btn svg{width:18px;height:18px;fill:currentColor}
.nav-toggle{display:none;width:44px;height:44px;flex:0 0 auto;place-items:center;border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--surface-glass);color:var(--text-1)}
.nav-toggle svg{width:20px;height:20px;fill:currentColor}
.drawer{display:none;border-top:1px solid var(--line);background:rgba(10,18,26,.98)}
.drawer.is-open{display:block}
.drawer-inner{display:grid;gap:16px;padding:18px 0 26px}
.drawer .main-nav{display:grid;gap:0;margin:0}
.drawer .nav-link{padding:13px 2px;border-bottom:1px solid var(--line);font-size:15px}
.drawer .nav-link::after{display:none}
.drawer .command-search{display:flex;width:100%}
.drawer .command-search input[type=text]{width:100%}

/* ---------- breadcrumb ---------- */
.breadcrumb{margin-bottom:24px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--text-3)}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb [aria-current=page]{color:var(--text-1)}

/* ---------- hero ---------- */
.page-hero{padding:52px 0 0}
.hero-copy{max-width:820px}
.hero-copy h1{margin:20px 0 16px}
.lead{max-width:680px;font-size:17px;color:var(--text-2)}
.meta-line{margin:18px 0 0;font-family:var(--font-mono);font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.hero-banner{position:relative;margin:40px 0 0;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 26px 60px -30px rgba(0,0,0,.95)}
.hero-banner img{width:100%;height:clamp(230px,34vw,420px);object-fit:cover;filter:saturate(.9) brightness(.72)}
.hero-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,18,.2),rgba(7,12,18,.88))}
.banner-chips{position:absolute;left:0;right:0;bottom:0;z-index:2;display:flex;flex-wrap:wrap;gap:12px;padding:24px 26px;margin:0}
.chip{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border:1px solid var(--line);border-radius:var(--radius-pill);background:rgba(10,18,26,.72);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);font-size:13px;color:var(--text-1)}
.chip b{font-family:var(--font-mono);font-weight:600;color:var(--brand);font-variant-numeric:tabular-nums}

/* ---------- section head ---------- */
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{margin:0 0 12px;font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--brand)}
.section-head h2{margin:0 0 14px}
.section-desc{margin:0;font-size:16px;color:var(--text-2)}

/* ---------- media cards (2 columns) ---------- */
.media-grid{row-gap:24px}
.media-card{display:flex;flex-direction:column;height:100%;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.media-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 22px 50px -26px rgba(0,0,0,.95),0 0 0 1px rgba(31,216,164,.28)}
.media-figure{position:relative;aspect-ratio:16/9;overflow:hidden}
.media-figure img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) brightness(.86);transition:transform 420ms var(--ease)}
.media-card:hover .media-figure img{transform:scale(1.04)}
.media-body{display:flex;flex-direction:column;flex:1;gap:10px;padding:24px 26px 28px}
.media-body h3{margin:2px 0 0;font-size:21px}
.media-body p{margin:0;font-size:15px;color:var(--text-2)}
.mini-list{display:grid;gap:8px;margin-top:auto;padding-top:16px;border-top:1px dashed var(--line)}
.mini-list li{position:relative;padding-left:16px;font-size:13px;color:var(--text-3)}
.mini-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ---------- secure split ---------- */
.secure-split{display:grid;gap:36px}
@media (min-width:1025px){.secure-split{grid-template-columns:.86fr 1.14fr;gap:64px;align-items:start}}
.secure-intro h2{margin:0 0 16px}
.secure-intro p{font-size:16px}
.secure-intro .btn-weak{margin-top:8px}
.step-list{display:grid;gap:14px}
.step-list li{display:flex;gap:18px;padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);transition:transform var(--t),border-color var(--t)}
.step-list li:hover{transform:translateY(-2px);border-color:var(--line-strong)}
.step-no{flex:0 0 auto;padding-top:2px;font-family:var(--font-mono);font-size:15px;font-weight:600;letter-spacing:.06em;color:var(--accent)}
.step-list h3{margin:0 0 6px;font-size:18px}
.step-list p{margin:0;font-size:14px;color:var(--text-2)}

/* ---------- metrics ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
@media (min-width:1025px){.metric-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.metric{padding:24px 26px;border:1px solid var(--line);border-radius:var(--radius-card);background:linear-gradient(180deg,rgba(31,216,164,.09),rgba(14,26,34,.62))}
.metric-num{display:block;font-family:var(--font-mono);font-size:32px;font-weight:600;line-height:1.1;color:var(--text-1);font-variant-numeric:tabular-nums}
.metric-label{display:block;margin-top:8px;font-size:13px;color:var(--text-3)}

/* ---------- update notes ---------- */
.note-list{border-top:1px solid var(--line)}
.note-list li{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--line);transition:padding-left var(--t)}
.note-list li:hover{padding-left:6px}
.note-date{flex:0 0 auto;font-family:var(--font-mono);font-size:13px;color:var(--accent);font-variant-numeric:tabular-nums}
.note-text{margin:0;font-size:15px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq .accordion{margin:0;background:transparent;border:0}
.faq .accordion .accordion-item{margin-bottom:14px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);overflow:hidden;transition:border-color var(--t),box-shadow var(--t)}
.faq .accordion .accordion-item.is-active{border-color:var(--line-strong);box-shadow:var(--shadow-card)}
.faq .accordion .accordion-title{display:block;padding:20px 56px 20px 26px;border:0;border-left:3px solid var(--brand);background:transparent;color:var(--text-1);font-size:16px;font-weight:600;line-height:1.6}
.faq .accordion .accordion-title:hover,.faq .accordion .accordion-title:focus{background:rgba(31,216,164,.06);color:var(--brand)}
.faq .accordion .accordion-title::before{display:none}
.faq .accordion .accordion-title::after{content:"+";position:absolute;top:50%;right:24px;transform:translateY(-50%);font-family:var(--font-mono);font-size:18px;color:var(--brand)}
.faq .accordion .accordion-item.is-active .accordion-title::after{content:"–"}
.faq .accordion .accordion-content{padding:0 26px 24px 26px;border:0;border-left:3px solid var(--brand);background:transparent;color:var(--text-2);font-size:15px}
.faq .accordion .accordion-content p{margin:0;font-size:15px;color:var(--text-2)}

/* ---------- CTA panel ---------- */
.cta-panel{position:relative;display:grid;gap:26px;padding:40px 32px;border:1px solid var(--line);border-radius:20px;background:var(--surface-glass);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card);overflow:hidden}
.cta-panel::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(255,122,50,.14),rgba(31,216,164,.12) 58%,transparent);pointer-events:none}
.cta-panel>*{position:relative;z-index:1}
@media (min-width:1025px){.cta-panel{grid-template-columns:1.25fr .75fr;align-items:center;padding:52px 56px}}
.cta-panel h2{margin:0 0 12px}
.cta-panel p{margin:0 0 6px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-meta{margin:16px 0 0;font-family:var(--font-mono);font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- footer ---------- */
.site-footer{margin-top:96px;padding:64px 0 28px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,18,26,.7),rgba(7,12,18,1))}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1025px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:44px}}
.footer-brand p{margin:16px 0;font-size:14px;color:var(--text-2)}
.footer-col h4{margin:0 0 16px;font-size:14px;letter-spacing:.08em;color:var(--text-1)}
.footer-col a{display:block;margin-bottom:10px;font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--brand)}
.footer-contact div{margin-bottom:10px;font-size:14px;line-height:1.7;color:var(--text-2)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;margin-top:44px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .header-inner .main-nav{display:none}
  .header-actions .command-search{display:none}
  .header-actions .icon-btn{display:none}
  .nav-toggle{display:grid}
  .header-inner{gap:14px}
}
@media (max-width:640px){
  .hero-copy h1{font-size:clamp(26px,7.4vw,34px)}
  .btn-row .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .banner-chips{padding:16px}
  .chip{font-size:12px;padding:7px 12px}
  .cta-panel{padding:32px 22px}
  .media-body{padding:20px 20px 24px}
}