/* roulang page: index */
:root{
  --bg-0:#06131C;
  --bg-1:#0A1D27;
  --surface:#0F2630;
  --surface-2:#12313D;
  --glass:rgba(18,48,60,0.55);
  --primary:#34E3C4;
  --primary-strong:#7DFFE8;
  --secondary:#FF8A5C;
  --signal:#FFD166;
  --text:#EAF6F4;
  --muted:#8FAEB4;
  --line:rgba(143,174,180,0.18);
  --line-strong:rgba(52,227,196,0.42);
  --danger:#FF7A6B;
  --success:#4BE3A4;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:12px;
  --sh-card:0 18px 48px rgba(0,0,0,0.28);
  --sh-float:0 24px 64px rgba(0,0,0,0.38);
  --sh-glow:0 0 0 1px rgba(52,227,196,0.55),0 0 28px rgba(52,227,196,0.35),0 10px 24px rgba(0,0,0,0.35);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(143,174,180,0.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(143,174,180,0.055) 1px,transparent 1px),
    radial-gradient(720px 520px at 78% 6%,rgba(52,227,196,0.13),transparent 62%),
    radial-gradient(620px 480px at 8% 42%,rgba(255,138,92,0.07),transparent 66%);
  background-size:64px 64px,64px 64px,100% 100%,100% 100%;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.container{width:min(1240px,calc(100% - 48px));margin-inline:auto;position:relative;z-index:1}
.section{padding-block:88px}
.section--tight{padding-block:64px}
.section-head{max-width:760px;margin-bottom:32px}
.section-head h2{
  font-size:clamp(1.75rem,3vw,2.5rem);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-0.005em;
  margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:1.0625rem;line-height:1.8}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;letter-spacing:.12em;color:var(--primary);
  text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--primary);border-radius:2px}
.muted{color:var(--muted)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;
  font-size:.9375rem;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,background-color .22s ease,box-shadow .22s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#04231F;box-shadow:var(--sh-glow)}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(125,255,232,0.75),0 0 36px rgba(52,227,196,0.48),0 12px 26px rgba(0,0,0,0.36)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{background:rgba(52,227,196,0.12);border-color:var(--primary);color:var(--primary-strong);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-sm{min-height:40px;padding:0 18px;font-size:.875rem}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:.9375rem;font-weight:600;transition:color .2s ease}
.link-arrow svg{transition:transform .2s ease}
.link-arrow:hover{color:var(--primary-strong)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,19,28,0.62);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px) saturate(130%);
  transition:background-color .3s ease,border-color .3s ease;
}
.site-header.is-scrolled{background:rgba(6,19,28,0.9);border-bottom-color:var(--line)}
.nav-wrap{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;
  min-height:72px;
}
.nav-side{display:flex;align-items:center;gap:6px}
.nav-side--right{justify-content:flex-end}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;
  color:#C7DEDD;font-size:.9375rem;font-weight:500;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--primary);background:rgba(52,227,196,0.08)}
.nav-link.is-active{color:var(--primary-strong)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--primary);border-radius:2px;
  box-shadow:0 0 10px rgba(52,227,196,0.85);
}
.brand{display:inline-flex;align-items:center;gap:10px;padding:6px 10px;border-radius:14px;transition:background-color .2s ease}
.brand:hover{background:rgba(52,227,196,0.08)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(52,227,196,0.95),rgba(52,227,196,0.35));
  color:#04231F;font-family:var(--font-num);font-weight:700;font-size:.9rem;
  box-shadow:0 0 18px rgba(52,227,196,0.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:1.0625rem;font-weight:800;letter-spacing:.01em;color:var(--text)}
.brand-text span{font-size:.6875rem;color:var(--muted);letter-spacing:.16em}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(18,48,60,0.7);border:1px solid var(--line);
  color:var(--text);place-items:center;cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px}
.mobile-drawer{
  display:none;position:fixed;inset:0;z-index:80;
  background:rgba(4,14,20,0.72);backdrop-filter:blur(6px);
}
.mobile-drawer.is-open{display:block}
.drawer-panel{
  background:linear-gradient(180deg,rgba(15,38,48,0.98),rgba(8,25,33,0.99));
  border-bottom:1px solid var(--line-strong);
  padding:18px 20px 24px;
  animation:slideDown .28s ease both;
}
@keyframes slideDown{from{transform:translateY(-16px);opacity:0}to{transform:translateY(0);opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:44px;height:44px;border-radius:12px;background:transparent;border:1px solid var(--line);color:var(--text);cursor:pointer;display:grid;place-items:center}
.drawer-links{display:grid;gap:6px;margin-bottom:18px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 12px;border-radius:12px;font-size:1.0625rem;font-weight:600;
  color:var(--text);border:1px solid transparent;
}
.drawer-links a:hover,.drawer-links a:focus-visible{background:rgba(52,227,196,0.1);border-color:var(--line-strong);color:var(--primary-strong)}
.drawer-links a small{font-size:.75rem;color:var(--muted);font-weight:400}
.drawer-cta{width:100%}

/* ============ Hero ============ */
.hero{position:relative;padding-block:64px 76px;overflow:hidden}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(52,227,196,0.16),transparent 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px;border-radius:999px;
  background:rgba(52,227,196,0.1);
  border:1px solid rgba(52,227,196,0.3);
  color:var(--primary-strong);
  font-size:.8125rem;letter-spacing:.04em;
  margin-bottom:22px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);display:inline-block}
.hero h1{
  font-size:clamp(2.5rem,5vw,4rem);
  font-weight:800;line-height:1.12;letter-spacing:-0.01em;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{
  color:#BBD3D3;font-size:1.125rem;line-height:1.85;max-width:36ch;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;padding-top:22px;border-top:1px solid var(--line)}
.hero-fact strong{display:block;font-family:var(--font-num);font-size:1.5rem;font-weight:700;color:var(--primary);line-height:1.2}
.hero-fact span{font-size:.8125rem;color:var(--muted)}

.hero-media{position:relative;display:flex;justify-content:center}
.media-frame{
  position:relative;width:min(340px,100%);aspect-ratio:9/16;max-height:min(70vh,560px);
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(52,227,196,0.35);
  box-shadow:0 0 0 1px rgba(52,227,196,0.08),0 28px 70px rgba(0,0,0,0.55),0 0 60px rgba(52,227,196,0.16);
  background:linear-gradient(180deg,#0B2530,#06161E);
}
.media-frame img{width:100%;height:100%;object-fit:cover;opacity:.86}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,19,28,0.15) 0%,rgba(6,19,28,0.05) 40%,rgba(6,19,28,0.92) 100%);
}
.media-scan{
  position:absolute;left:0;right:0;height:120px;top:-120px;
  background:linear-gradient(180deg,transparent,rgba(52,227,196,0.16),transparent);
  animation:scanMove 6s linear infinite;z-index:2;pointer-events:none;
}
@keyframes scanMove{0%{top:-120px}100%{top:100%}}
.play-btn{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:72px;height:72px;border-radius:50%;z-index:3;cursor:pointer;
  background:rgba(52,227,196,0.9);border:none;color:#04231F;
  display:grid;place-items:center;
  box-shadow:0 0 0 8px rgba(52,227,196,0.16),0 0 34px rgba(52,227,196,0.55);
  transition:transform .22s ease,background-color .22s ease;
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);background:var(--primary-strong)}
.play-btn svg{width:26px;height:26px;margin-left:3px}
.media-meta{position:absolute;left:0;right:0;bottom:0;padding:18px;z-index:3}
.progress{height:4px;border-radius:4px;background:rgba(234,246,244,0.22);overflow:hidden;margin-bottom:12px}
.progress span{display:block;height:100%;width:42%;border-radius:4px;background:linear-gradient(90deg,var(--primary),var(--primary-strong))}
.media-stats{display:flex;flex-wrap:wrap;gap:10px;font-size:.75rem;color:#D5EAE8}
.media-stats span{
  padding:4px 10px;border-radius:999px;
  background:var(--glass);border:1px solid rgba(52,227,196,0.18);
  backdrop-filter:blur(18px) saturate(140%);
}
.media-chip{
  position:absolute;right:-6px;top:26px;z-index:4;
  padding:9px 15px;border-radius:14px;font-size:.75rem;color:var(--primary-strong);
  background:var(--glass);border:1px solid rgba(52,227,196,0.28);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-float);
}

/* ============ 横向片段卡 ============ */
.clip-track{
  display:flex;gap:20px;overflow-x:auto;padding-bottom:14px;
  scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.clip-track::-webkit-scrollbar{height:6px}
.clip-track::-webkit-scrollbar-thumb{background:rgba(52,227,196,0.35);border-radius:6px}
.clip-card{
  position:relative;flex:0 0 auto;width:clamp(220px,26vw,300px);
  aspect-ratio:9/16;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);scroll-snap-align:start;
  background:var(--surface);box-shadow:var(--sh-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.clip-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 24px 58px rgba(0,0,0,0.42)}
.clip-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.clip-card:hover img{transform:scale(1.03)}
.clip-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,19,28,0.05) 30%,rgba(6,19,28,0.9) 100%);
}
.clip-dur{
  position:absolute;top:14px;right:14px;z-index:3;
  padding:3px 9px;border-radius:999px;font-size:.6875rem;font-family:var(--font-num);
  background:rgba(6,19,28,0.72);border:1px solid rgba(52,227,196,0.25);color:var(--primary-strong);
}
.clip-body{position:absolute;left:0;right:0;bottom:0;padding:16px;z-index:3}
.clip-tag{
  display:inline-block;margin-bottom:8px;padding:2px 9px;border-radius:999px;
  font-size:.6875rem;color:var(--secondary);background:rgba(255,138,92,0.12);
  border:1px solid rgba(255,138,92,0.32);
}
.clip-body h3{
  font-size:1rem;font-weight:700;line-height:1.4;color:#fff;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:6px;
}
.clip-body p{
  font-size:.8125rem;color:#B9D2D0;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.clip-meta{display:flex;align-items:center;gap:10px;margin-top:10px;font-size:.6875rem;color:var(--muted)}

/* ============ 种草清单 ============ */
.picks{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start}
.picks-aside{position:sticky;top:104px}
.picks-aside h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;line-height:1.2;margin-bottom:16px}
.picks-aside p{color:var(--muted);line-height:1.85;margin-bottom:24px}
.picks-list{border-top:1px solid var(--line)}
.pick-item{
  display:grid;grid-template-columns:auto 84px 1fr auto;gap:18px;align-items:center;
  padding:22px 8px;border-bottom:1px solid var(--line);
  transition:background-color .22s ease,padding-left .22s ease;
}
.pick-item:hover{background:rgba(52,227,196,0.05);padding-left:14px}
.pick-num{font-family:var(--font-num);font-size:1.125rem;font-weight:700;color:rgba(52,227,196,0.55);letter-spacing:.04em}
.pick-thumb{width:84px;height:64px;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--surface-2)}
.pick-thumb img{width:100%;height:100%;object-fit:cover}
.pick-main h3{font-size:1.0625rem;font-weight:700;margin-bottom:4px;line-height:1.4}
.pick-main p{font-size:.875rem;color:var(--muted);line-height:1.65}
.pick-tags{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.tag{
  display:inline-block;padding:2px 10px;border-radius:999px;
  font-size:.6875rem;color:#A9C7C6;background:rgba(143,174,180,0.1);
  border:1px solid var(--line);
}
.pick-arrow{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--primary);
  transition:background-color .22s ease,border-color .22s ease,transform .22s ease;
}
.pick-item:hover .pick-arrow{background:rgba(52,227,196,0.14);border-color:var(--line-strong);transform:translateX(3px)}

/* ============ 最新信息 CMS ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.news-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:24px;box-shadow:var(--sh-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;gap:10px;
}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 24px 58px rgba(0,0,0,0.42)}
.news-card.is-lead{
  grid-column:1/-1;display:grid;grid-template-columns:300px 1fr;gap:26px;align-items:center;padding:24px;
}
.news-cover{border-radius:16px;overflow:hidden;aspect-ratio:16/10;border:1px solid var(--line)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-badge{
  align-self:flex-start;padding:2px 10px;border-radius:999px;
  font-size:.6875rem;color:var(--primary-strong);
  background:rgba(52,227,196,0.12);border:1px solid rgba(52,227,196,0.3);
}
.news-card h3{font-size:1.0625rem;font-weight:700;line-height:1.5;color:var(--text);transition:color .2s ease}
.news-card:hover h3{color:var(--primary-strong)}
.news-card p{font-size:.875rem;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:.75rem;color:var(--muted)}
.news-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:52px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-md);
  background:rgba(15,38,48,0.4);color:var(--muted);text-align:center;
}
.news-empty svg{width:34px;height:34px;color:rgba(52,227,196,0.6)}

/* ============ 口碑 ============ */
.voice-track{display:flex;gap:18px;overflow-x:auto;padding-bottom:14px;scroll-snap-type:x proximity}
.voice-track::-webkit-scrollbar{height:6px}
.voice-track::-webkit-scrollbar-thumb{background:rgba(52,227,196,0.3);border-radius:6px}
.voice-card{
  flex:0 0 auto;width:min(320px,80vw);scroll-snap-align:start;
  padding:22px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid rgba(52,227,196,0.18);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-card);
}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  font-weight:700;font-size:.9375rem;color:#04231F;
  background:linear-gradient(145deg,var(--primary),rgba(52,227,196,0.5));
}
.avatar.v2{background:linear-gradient(145deg,var(--secondary),rgba(255,138,92,0.5))}
.avatar.v3{background:linear-gradient(145deg,var(--signal),rgba(255,209,102,0.5))}
.voice-top strong{display:block;font-size:.9375rem}
.voice-top small{font-size:.75rem;color:var(--muted)}
.voice-card p{font-size:.9375rem;line-height:1.75;color:#D6E9E8;margin-bottom:14px}
.stars{color:var(--signal);font-size:.8125rem;letter-spacing:.14em}

/* ============ FAQ ============ */
.faq{display:grid;grid-template-columns:.75fr 1.25fr;gap:56px;align-items:start}
.faq-aside h2{font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;line-height:1.2;margin-bottom:16px}
.faq-aside p{color:var(--muted);line-height:1.85;margin-bottom:22px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  min-height:56px;padding:16px 6px;background:transparent;border:0;cursor:pointer;
  color:var(--text);font-size:1.0625rem;font-weight:600;text-align:left;
  transition:background-color .2s ease,color .2s ease;
}
.faq-q:hover{background:rgba(52,227,196,0.06);color:var(--primary-strong)}
.faq-q .idx{font-family:var(--font-num);font-size:.875rem;color:var(--primary);flex:0 0 auto}
.faq-q .txt{flex:1}
.faq-q .plus{
  width:26px;height:26px;flex:0 0 auto;position:relative;
  transition:transform .3s ease;
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .plus::before{width:14px;height:2px}
.faq-q .plus::after{width:2px;height:14px}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg)}
.faq-item.is-open .faq-q{color:var(--primary-strong)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease}
.faq-a p{padding:0 6px 20px 42px;color:var(--muted);font-size:.9375rem;line-height:1.85}

/* ============ CTA 面板 ============ */
.cta-panel{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center;
  padding:48px;border-radius:var(--r-lg);
  background:
    radial-gradient(560px 320px at 12% 10%,rgba(52,227,196,0.2),transparent 66%),
    linear-gradient(150deg,var(--surface-2),#0A1F29 72%);
  border:1px solid var(--line-strong);
  box-shadow:var(--sh-float);
}
.cta-panel h2{font-size:clamp(1.6rem,2.6vw,2.25rem);font-weight:700;line-height:1.25;margin-bottom:14px}
.cta-panel p{color:#BBD3D3;line-height:1.85;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;margin-top:24px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,29,39,0.6),rgba(5,17,24,0.95));
  padding-block:64px 28px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1.2fr;gap:40px}
.footer-brand .brand{margin-bottom:14px;padding-left:0}
.footer-brand p{color:var(--muted);font-size:.875rem;line-height:1.8;max-width:30ch}
.footer-col h4{font-size:.9375rem;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--muted);font-size:.875rem;transition:color .2s ease}
.footer-col a:hover{color:var(--primary)}
.subscribe-form{display:grid;gap:10px;margin-top:14px}
.field-label{font-size:.8125rem;color:var(--muted);margin-bottom:6px;display:block}
.input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  background:#0A1E27;border:1px solid var(--line);color:var(--text);
  font-size:.9375rem;transition:border-color .2s ease,box-shadow .2s ease;
}
.input::placeholder{color:var(--muted)}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(52,227,196,0.16)}
.input.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,122,107,0.14)}
.form-tip{font-size:.75rem;color:var(--muted);line-height:1.6}
.form-tip.is-error{color:var(--danger)}
.form-tip.is-success{color:var(--success)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:.8125rem;color:var(--muted);
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--primary)}

/* ============ 移动底栏 ============ */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  min-height:64px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,19,28,0.94);border-top:1px solid var(--line-strong);
  backdrop-filter:blur(14px);
  align-items:center;gap:12px;
}
.mobile-bar .btn{flex:1}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{width:min(1080px,calc(100% - 40px))}
  .hero-grid{gap:40px}
  .picks,.faq{gap:36px}
  .footer-grid{grid-template-columns:1.3fr .9fr .9fr;gap:32px}
  .footer-col--form{grid-column:1/-1}
}
@media (max-width:991px){
  .section{padding-block:64px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-sub{max-width:none}
  .hero-media{order:2}
  .picks,.faq{grid-template-columns:1fr}
  .picks-aside,.faq-aside{position:static}
  .news-grid{grid-template-columns:1fr}
  .news-card.is-lead{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;padding:36px}
  .cta-actions{justify-content:flex-start}
  .nav-side .nav-link{padding:10px 10px;font-size:.875rem}
  .nav-cta{display:none}
}
@media (max-width:768px){
  .container{width:calc(100% - 32px)}
  .section{padding-block:56px}
  .nav-wrap{min-height:64px;grid-template-columns:auto 1fr auto;gap:8px}
  .nav-side{display:none}
  .nav-toggle{display:grid}
  .brand{justify-self:center}
  .hero{padding-block:40px 56px}
  .hero h1{font-size:clamp(2rem,7vw,2.5rem)}
  .media-frame{width:min(78vw,320px);max-height:70vh}
  .media-chip{right:-4px;top:14px}
  .news-head{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .footer-brand{grid-column:1/-1}
  .mobile-bar{display:flex}
  body{padding-bottom:88px}
  .faq-a p{padding-left:6px}
  .pick-item{grid-template-columns:auto 68px 1fr;gap:14px}
  .pick-thumb{width:68px;height:54px}
  .pick-arrow{display:none}
}
@media (max-width:560px){
  .hero-actions .btn{width:100%}
  .hero-facts{gap:18px}
  .news-card{padding:18px}
  .cta-panel{padding:26px}
  .footer-grid{grid-template-columns:1fr}
  .clip-card{width:min(72vw,260px)}
}
@media (max-width:480px){
  .container{width:calc(100% - 32px)}
  .hero h1{font-size:2rem}
  .brand-text strong{font-size:.9375rem}
  .brand-text span{font-size:.625rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#06131C;
  --bg-1:#0A1D27;
  --surface:#0F2630;
  --surface-2:#12313D;
  --glass:rgba(18,48,60,0.55);
  --primary:#34E3C4;
  --primary-strong:#7DFFE8;
  --secondary:#FF8A5C;
  --signal:#FFD166;
  --text:#EAF6F4;
  --muted:#8FAEB4;
  --line:rgba(143,174,180,0.18);
  --line-strong:rgba(52,227,196,0.42);
  --danger:#FF7A6B;
  --success:#4BE3A4;
  --radius-lg:28px;
  --radius:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow:0 18px 48px rgba(0,0,0,0.28);
  --shadow-float:0 24px 64px rgba(0,0,0,0.38);
  --glow:0 0 0 1px rgba(52,227,196,0.55),0 0 28px rgba(52,227,196,0.35),0 10px 24px rgba(0,0,0,0.35);
  --container:1240px;
  --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 12% -12%,rgba(52,227,196,0.12),transparent 62%),
    radial-gradient(720px 520px at 92% -4%,rgba(255,138,92,0.08),transparent 60%),
    radial-gradient(680px 480px at 50% 108%,rgba(52,227,196,0.06),transparent 65%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(143,174,180,0.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(143,174,180,0.05) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 72%);
          mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 72%);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding-left:1.15rem}
svg{display:block}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(6,19,28,0.74);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,19,28,0.94);
  box-shadow:0 14px 34px rgba(0,0,0,0.36);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  height:72px;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(18,48,60,0.6);
  color:var(--text);
  cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(52,227,196,0.1)}
.nav-toggle svg{width:22px;height:22px}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-side--left{grid-column:1;justify-self:start}
.nav-side--right{grid-column:3;justify-self:end}
.nav-link{
  position:relative;
  padding:6px 2px;
  font-size:.95rem;
  font-weight:500;
  color:var(--text);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--primary-strong)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary-strong)}
.brand{
  grid-column:2;
  justify-self:center;
  display:flex;
  align-items:center;
  gap:10px;
}
.brand-mark{
  width:42px;height:42px;
  border-radius:14px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-weight:800;
  font-size:.95rem;
  letter-spacing:.02em;
  color:#04171A;
  background:linear-gradient(140deg,var(--primary),var(--primary-strong));
  box-shadow:0 0 18px rgba(52,227,196,0.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-text strong{font-size:1.02rem;font-weight:800;letter-spacing:-0.01em}
.brand-text span{font-size:.72rem;color:var(--muted);letter-spacing:.08em}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 26px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:.95rem;
  font-weight:700;
  cursor:pointer;
  transition:transform .18s ease,filter .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn svg{width:16px;height:16px;transition:transform .2s ease}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-strong));
  color:#04211E;
  box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--primary-strong);
}
.btn-ghost:hover{background:rgba(52,227,196,0.12);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-sm{padding:9px 18px;min-height:40px;font-size:.875rem}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary-strong);
  font-weight:600;font-size:.9rem;
}
.btn-text svg{width:15px;height:15px;transition:transform .2s ease}
.btn-text:hover svg{transform:translateX(3px)}
/* ---------- common ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(52,227,196,0.28);
  background:rgba(52,227,196,0.08);
  color:var(--primary-strong);
  font-size:.78rem;
  letter-spacing:.06em;
}
.dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary)}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(143,174,180,0.08);
  color:var(--muted);
  font-size:.75rem;
  letter-spacing:.04em;
  white-space:nowrap;
}
.tag--primary{color:var(--primary-strong);border-color:rgba(52,227,196,0.3);background:rgba(52,227,196,0.1)}
.tag--warn{color:var(--secondary);border-color:rgba(255,138,92,0.32);background:rgba(255,138,92,0.1)}
.section{padding:88px 0}
.section-head{max-width:720px;margin-bottom:36px}
.section-head h2{
  font-size:clamp(1.75rem,3vw,2.5rem);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-0.01em;
  margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:1rem;line-height:1.8}
/* ---------- breadcrumb ---------- */
.crumb-bar{padding:26px 0 0}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:.82rem;color:var(--muted);
}
.crumb a{color:var(--muted);transition:color .2s ease}
.crumb a:hover{color:var(--primary-strong)}
.crumb .sep{color:rgba(143,174,180,0.45)}
.crumb-current{
  color:var(--text);
  max-width:min(56vw,520px);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
/* ---------- article head ---------- */
.article-head{padding:28px 0 0}
.article-head-inner{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:
    radial-gradient(700px 320px at 88% -20%,rgba(52,227,196,0.14),transparent 60%),
    linear-gradient(160deg,var(--surface),var(--bg-1));
  box-shadow:var(--shadow);
  padding:38px clamp(20px,3vw,44px) 34px;
  position:relative;
  overflow:hidden;
}
.article-head-inner::after{
  content:"";
  position:absolute;
  right:-90px;top:-90px;
  width:260px;height:260px;
  border-radius:50%;
  border:1px solid rgba(52,227,196,0.16);
  pointer-events:none;
}
.article-head h1{
  font-size:clamp(1.75rem,3.6vw,2.9rem);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-0.01em;
  margin:16px 0 18px;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:.82rem;
  color:var(--muted);
  padding-top:6px;
  border-top:1px solid var(--line);
  margin-top:18px;
  padding-top:18px;
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{width:14px;height:14px;stroke:var(--muted)}
.article-cover{
  margin-top:26px;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  position:relative;
}
.article-cover img{
  width:100%;
  aspect-ratio:16/8;
  object-fit:cover;
}
.article-cover figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:26px 20px 14px;
  font-size:.78rem;
  color:rgba(234,246,244,0.82);
  background:linear-gradient(180deg,transparent,rgba(6,19,28,0.88));
}
/* ---------- layout ---------- */
.article-section{padding:56px 0 88px}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  align-items:start;
}
.article-main{max-width:820px}
/* ---------- notice ---------- */
.notice-card{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:16px;
  padding:20px 22px;
  border-radius:var(--radius);
  border:1px solid rgba(52,227,196,0.24);
  background:linear-gradient(140deg,rgba(52,227,196,0.09),rgba(15,38,48,0.9));
  margin-bottom:34px;
}
.notice-icon{
  width:38px;height:38px;
  border-radius:12px;
  display:grid;place-items:center;
  color:var(--primary-strong);
  background:rgba(52,227,196,0.14);
  border:1px solid rgba(52,227,196,0.26);
}
.notice-icon svg{width:19px;height:19px}
.notice-card h3{font-size:.98rem;font-weight:700;margin-bottom:6px}
.notice-card p{font-size:.88rem;color:var(--muted);line-height:1.75}
/* ---------- prose ---------- */
.prose{font-size:1.0625rem;line-height:1.9;color:var(--text);word-break:break-word}
.prose>*:first-child{margin-top:0}
.prose h2{
  position:relative;
  font-size:clamp(1.4rem,2.2vw,1.85rem);
  font-weight:700;
  line-height:1.3;
  margin:44px 0 16px;
  padding-left:16px;
  scroll-margin-top:96px;
}
.prose h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;bottom:.28em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(52,227,196,0.2));
}
.prose h3{
  font-size:1.2rem;
  font-weight:700;
  line-height:1.45;
  margin:30px 0 12px;
  color:var(--primary-strong);
  scroll-margin-top:96px;
}
.prose h4{font-size:1.05rem;font-weight:700;margin:22px 0 10px}
.prose p{margin:0 0 18px}
.prose ul,.prose ol{margin:0 0 20px;padding-left:8px;list-style:none}
.prose ul li,.prose ol li{position:relative;padding-left:22px;margin-bottom:10px}
.prose ul li::before{
  content:"";
  position:absolute;left:2px;top:.72em;
  width:7px;height:7px;
  border-radius:2px;
  transform:rotate(45deg);
  background:var(--primary);
  box-shadow:0 0 10px rgba(52,227,196,0.5);
}
.prose ol{counter-reset:prose-list}
.prose ol li{counter-increment:prose-list}
.prose ol li::before{
  content:counter(prose-list);
  position:absolute;left:0;top:.16em;
  width:20px;height:20px;
  display:grid;place-items:center;
  font-family:var(--font-num);
  font-size:.72rem;
  font-weight:700;
  color:#04211E;
  border-radius:6px;
  background:linear-gradient(140deg,var(--primary),var(--primary-strong));
}
.prose blockquote{
  margin:24px 0;
  padding:16px 20px;
  border-left:3px solid var(--primary);
  border-radius:0 14px 14px 0;
  background:rgba(52,227,196,0.07);
  color:var(--text);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose a{color:var(--primary-strong);text-decoration:underline;text-underline-offset:3px;transition:color .2s ease}
.prose a:hover{color:var(--primary)}
.prose img{border-radius:16px;margin:22px 0;border:1px solid var(--line)}
.prose figure{margin:22px 0}
.prose figcaption{font-size:.8rem;color:var(--muted);text-align:center;margin-top:8px}
.prose table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:.92rem;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.prose th,.prose td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left}
.prose th{background:rgba(52,227,196,0.1);color:var(--primary-strong);font-weight:700}
.prose tbody tr:nth-child(even) td{background:rgba(143,174,180,0.05)}
.prose tbody tr:last-child td{border-bottom:0}
.prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;
  padding:2px 6px;
  border-radius:6px;
  background:#0A1E27;
  color:var(--primary-strong);
  border:1px solid var(--line);
}
.prose pre{
  margin:22px 0;
  padding:16px 18px;
  border-radius:14px;
  background:#08161F;
  border:1px solid var(--line);
  overflow:auto;
}
.prose pre code{background:none;border:0;padding:0;color:var(--text)}
.prose hr{border:0;height:1px;background:var(--line);margin:34px 0}
/* ---------- empty state ---------- */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  padding:56px 24px;
  text-align:center;
  border:1px dashed rgba(143,174,180,0.34);
  border-radius:var(--radius);
  background:rgba(15,38,48,0.5);
}
.empty-state svg{width:38px;height:38px;color:var(--muted)}
.empty-state p{color:var(--muted);font-size:.95rem}
/* ---------- aside / toc ---------- */
.article-aside{position:sticky;top:96px}
.toc-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow);
  padding:18px 20px;
}
.toc-summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  font-size:.9rem;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--text);
  cursor:default;
  list-style:none;
}
.toc-summary::-webkit-details-marker{display:none}
.toc-summary::after{
  content:"";
  width:8px;height:8px;
  border-right:2px solid var(--muted);
  border-bottom:2px solid var(--muted);
  transform:rotate(45deg);
  transition:transform .25s ease;
  opacity:0;
}
.toc-list{
  list-style:none;
  padding:0;
  margin:14px 0 0;
  display:flex;
  flex-direction:column;
  gap:2px;
  max-height:58vh;
  overflow:auto;
}
.toc-list::-webkit-scrollbar{width:4px}
.toc-list::-webkit-scrollbar-thumb{background:rgba(143,174,180,0.34);border-radius:4px}
.toc-item a{
  display:block;
  padding:7px 10px;
  border-radius:10px;
  font-size:.85rem;
  line-height:1.55;
  color:var(--muted);
  border-left:2px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.toc-item a:hover{color:var(--primary-strong);background:rgba(52,227,196,0.08)}
.toc-item.is-active a{color:var(--primary-strong);border-left-color:var(--primary);background:rgba(52,227,196,0.1)}
.toc-level-h3 a{padding-left:22px;font-size:.8rem}
.toc-empty{font-size:.82rem;color:var(--muted);padding:6px 2px}
.toc-tip{
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:.78rem;
  color:var(--muted);
  line-height:1.7;
}
/* ---------- related ---------- */
.related-block{margin-top:56px}
.related-block h2{
  font-size:clamp(1.35rem,2.2vw,1.75rem);
  font-weight:700;
  margin-bottom:20px;
}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;
  flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--surface);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.related-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-float)}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.related-card:hover img{transform:scale(1.03)}
.related-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px}
.related-body h3{font-size:1.02rem;font-weight:700;line-height:1.5}
.related-body p{font-size:.85rem;color:var(--muted);line-height:1.7}
.related-body .btn-text{margin-top:6px}
/* ---------- back links ---------- */
.back-links{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:44px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:48px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:14px;
  min-height:56px;
  padding:14px 0;
  background:none;
  border:0;
  color:var(--text);
  font-size:1rem;
  font-weight:700;
  text-align:left;
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary-strong)}
.faq-num{font-family:var(--font-num);font-size:.82rem;color:var(--primary);letter-spacing:.06em}
.faq-icon{
  margin-left:auto;
  position:relative;
  width:20px;height:20px;
  flex:0 0 20px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  transition:transform .3s ease,border-color .3s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--primary-strong);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:9px;height:1.6px}
.faq-icon::after{width:1.6px;height:9px}
.faq-item.is-open .faq-icon{transform:rotate(135deg);border-color:var(--primary)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a p{padding:0 34px 18px 46px;font-size:.92rem;color:var(--muted);line-height:1.85}
/* ---------- cta ---------- */
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid rgba(52,227,196,0.26);
  background:
    radial-gradient(620px 320px at 8% 0%,rgba(52,227,196,0.18),transparent 62%),
    radial-gradient(520px 300px at 96% 100%,rgba(255,138,92,0.14),transparent 60%),
    linear-gradient(150deg,var(--surface-2),var(--bg-1));
  box-shadow:var(--shadow-float);
  padding:clamp(28px,4vw,52px);
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:28px;
  align-items:center;
}
.cta-panel h2{font-size:clamp(1.5rem,2.6vw,2.15rem);font-weight:800;line-height:1.25;margin-bottom:12px}
.cta-panel p{color:var(--muted);font-size:.98rem;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,29,39,0.86),rgba(6,19,28,0.98));
  padding:64px 0 26px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.35fr .8fr .8fr 1.15fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-col h4{font-size:.9rem;font-weight:700;letter-spacing:.06em;margin-bottom:16px;color:var(--text)}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:.875rem;color:var(--muted);transition:color .2s ease}
.footer-col ul a:hover{color:var(--primary-strong)}
.footer-brand p{font-size:.85rem;color:var(--muted);margin-top:16px;line-height:1.75;max-width:32ch}
.footer-brand .brand{justify-self:start;grid-column:auto}
.footer-col--form .form-tip{font-size:.78rem;color:var(--muted);line-height:1.7;margin-bottom:12px}
.subscribe-form{display:flex;flex-direction:column;gap:10px}
.field-label{display:block;font-size:.78rem;color:var(--muted);margin-bottom:6px;letter-spacing:.04em}
.input{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:#0A1E27;
  color:var(--text);
  font-size:.9rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.input::placeholder{color:var(--muted)}
.input:hover{border-color:rgba(143,174,180,0.32)}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(52,227,196,0.18)}
.input.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,122,107,0.16)}
.form-tip[data-state="error"]{color:var(--danger)}
.form-tip[data-state="success"]{color:var(--success)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding-top:22px;
  font-size:.78rem;
  color:var(--muted);
}
/* ---------- mobile bar ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  height:64px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,19,28,0.95);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  align-items:center;
  gap:10px;
}
.mobile-bar .btn{flex:1;min-height:44px}
/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{max-width:1080px;padding:0 20px}
  .article-layout{gap:36px;grid-template-columns:minmax(0,1fr) 268px}
  .faq-wrap{gap:32px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-aside{position:static;order:-1;margin-bottom:8px}
  .article-main{max-width:none}
  .toc-card{padding:14px 16px}
  .toc-summary{cursor:pointer}
  .toc-summary::after{opacity:1}
  .toc-card[open] .toc-summary::after{transform:rotate(225deg)}
  .toc-card:not([open]) .toc-list{display:none}
  .toc-card:not([open]) .toc-tip{display:none}
  .toc-list{max-height:none}
  .faq-wrap{grid-template-columns:minmax(0,1fr);gap:24px}
  .cta-panel{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .nav-wrap{grid-template-columns:44px 1fr 44px;height:64px;gap:10px}
  .nav-toggle{display:inline-flex;grid-column:1;grid-row:1}
  .brand{grid-column:2;grid-row:1}
  .brand-mark{width:36px;height:36px;border-radius:12px;font-size:.82rem}
  .brand-text strong{font-size:.9rem}
  .brand-text span{display:none}
  .nav-side{
    grid-column:1 / -1;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    margin-top:12px;
    padding:10px 0 14px;
    border-top:1px solid var(--line);
  }
  .nav-side--left{grid-row:2}
  .nav-side--right{grid-row:3;border-top:0;margin-top:0}
  .site-header.nav-open .nav-side{display:flex}
  .nav-link{padding:12px 8px;border-radius:12px;font-size:1rem}
  .nav-link::after{display:none}
  .nav-link:hover,.nav-link.is-active{background:rgba(52,227,196,0.1)}
  .nav-side--right .nav-cta{width:100%;margin-top:8px}
  .crumb-bar{padding-top:18px}
  .crumb-current{max-width:62vw}
  .article-head-inner{padding:26px 20px 24px;border-radius:22px}
  .article-cover img{aspect-ratio:16/10}
  .article-section{padding:36px 0 56px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .back-links .btn{flex:1}
  .cta-actions .btn{flex:1}
  .mobile-bar{display:flex}
  body{padding-bottom:84px}
  .site-footer{margin-top:56px;padding:48px 0 24px}
  .footer-grid{padding-bottom:32px;gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:560px){
  .article-head h1{font-size:1.55rem}
  .prose{font-size:1rem}
  .prose h2{font-size:1.32rem}
  .prose h3{font-size:1.08rem}
  .prose ul li,.prose ol li{padding-left:20px}
  .faq-q{font-size:.95rem}
  .faq-a p{padding:0 8px 16px 40px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-col--form .subscribe-form{gap:12px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .article-meta{font-size:.78rem;gap:8px 14px}
  .section-head h2{font-size:1.5rem}
  .mobile-bar{height:64px}
}

/* roulang page: category1 */
:root{
  --bg-0:#06131C;
  --bg-1:#0A1D27;
  --surface:#0F2630;
  --surface-2:#12313D;
  --glass:rgba(18,48,60,.55);
  --primary:#34E3C4;
  --primary-strong:#7DFFE8;
  --secondary:#FF8A5C;
  --signal:#FFD166;
  --text:#EAF6F4;
  --muted:#8FAEB4;
  --line:rgba(143,174,180,.18);
  --line-strong:rgba(52,227,196,.42);
  --danger:#FF7A6B;
  --success:#4BE3A4;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-card:0 18px 48px rgba(0,0,0,.28);
  --sh-float:0 24px 64px rgba(0,0,0,.38);
  --sh-glow:0 0 0 1px rgba(52,227,196,.55),0 0 28px rgba(52,227,196,.35),0 10px 24px rgba(0,0,0,.35);
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",system-ui,sans-serif;
  --container:1240px;
  --sec-y:88px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  overflow-x:hidden;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 78% -8%, rgba(52,227,196,.14), transparent 62%),
    radial-gradient(720px 460px at 4% 10%, rgba(255,138,92,.08), transparent 60%),
    linear-gradient(180deg,#06131C 0%,#071821 46%,#06131C 100%);
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(143,174,180,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143,174,180,.055) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 18%, #000 28%, transparent 76%);
  mask-image:radial-gradient(circle at 50% 18%, #000 28%, transparent 76%);
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{line-height:1.25;letter-spacing:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(6,19,28,.74);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(6,19,28,.94);
  border-bottom-color:rgba(52,227,196,.2);
  box-shadow:0 12px 30px rgba(0,0,0,.36);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:18px;
  height:72px;
}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-side--left{justify-content:flex-end}
.nav-side--right{justify-content:flex-start}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 2px;
  font-size:15px;
  color:#CFE5E3;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-3px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(52,227,196,.85);
  transform:translateX(-50%);
  transition:width .25s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--primary-strong)}
.nav-link:hover::after,.nav-link:focus-visible::after{width:70%}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:70%}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  transition:transform .25s ease;
}
.brand:hover{transform:translateY(-1px)}
.brand-mark{
  width:38px;
  height:38px;
  flex:none;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-family:var(--font-num);
  font-size:15px;
  font-weight:800;
  letter-spacing:.04em;
  color:#04211E;
  background:linear-gradient(135deg,var(--primary-strong),var(--primary));
  box-shadow:0 0 18px rgba(52,227,196,.42);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:800}
.brand-text span{font-size:11px;letter-spacing:.14em;color:var(--muted)}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:rgba(52,227,196,.08);
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--primary-strong);
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(52,227,196,.16);border-color:var(--line-strong)}
.nav-toggle svg{width:22px;height:22px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  text-align:center;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  color:#04211E;
  background:linear-gradient(135deg,var(--primary-strong),var(--primary));
  box-shadow:var(--sh-glow);
}
.btn-primary:hover{
  transform:translateY(-1px);
  background:linear-gradient(135deg,#9BFFED,#4DF0D2);
  box-shadow:0 0 0 1px rgba(52,227,196,.7),0 0 36px rgba(52,227,196,.45),0 12px 26px rgba(0,0,0,.4);
}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{
  color:var(--primary-strong);
  background:transparent;
  border-color:rgba(52,227,196,.5);
}
.btn-ghost:hover{
  transform:translateY(-1px);
  background:rgba(52,227,196,.12);
  border-color:var(--primary);
}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- badges / tags ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(52,227,196,.34);
  background:rgba(52,227,196,.1);
  color:var(--primary-strong);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.06em;
}
.badge::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(52,227,196,.9);
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--r-pill);
  background:rgba(143,174,180,.12);
  border:1px solid var(--line);
  color:var(--muted);
  font-size:12.5px;
  letter-spacing:.04em;
}
.eyebrow{
  display:inline-block;
  font-family:var(--font-num);
  font-size:12.5px;
  letter-spacing:.22em;
  color:var(--primary);
  text-transform:none;
  margin-bottom:12px;
}

/* ---------- crumbs ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:24px 0 4px;
  font-size:13px;
  color:var(--muted);
  position:relative;
  z-index:1;
}
.crumbs a{color:var(--muted);transition:color .2s ease}
.crumbs a:hover{color:var(--primary)}
.crumbs span[aria-current]{color:#C3D9D7}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  margin-top:16px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(18,49,61,.92),rgba(7,24,33,.94));
  box-shadow:var(--sh-card);
  z-index:1;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.24;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(6,19,28,.95) 24%,rgba(6,19,28,.66) 62%,rgba(6,19,28,.3) 100%);
}
.page-hero-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.5fr .8fr;
  gap:40px;
  align-items:center;
  padding:46px 44px 42px;
}
.hero-copy h1{
  margin:16px 0 14px;
  font-size:clamp(2rem,3.6vw,3rem);
  font-weight:800;
  line-height:1.16;
}
.hero-sub{
  max-width:34em;
  color:#C3D9D7;
  font-size:1.0625rem;
  line-height:1.85;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:30px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-facts li{display:flex;flex-direction:column;gap:2px}
.hero-facts strong{
  font-family:var(--font-num);
  font-size:26px;
  font-weight:800;
  color:var(--primary-strong);
  line-height:1.1;
}
.hero-facts span{font-size:12.5px;color:var(--muted);letter-spacing:.06em}
.hero-thumb{
  position:relative;
  border-radius:24px;
  overflow:hidden;
  border:1px solid rgba(52,227,196,.32);
  box-shadow:0 0 0 1px rgba(52,227,196,.1),0 22px 50px rgba(0,0,0,.45);
  aspect-ratio:4/4.6;
  background:linear-gradient(160deg,#12313D,#0A1D27);
}
.hero-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.94;
}
.hero-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,19,28,0) 46%,rgba(6,19,28,.72) 100%);
}

/* ---------- sections ---------- */
main{position:relative;z-index:1}
.section{padding-top:var(--sec-y)}
.section-head{max-width:720px;margin-bottom:34px}
.section-head h2{
  font-size:clamp(1.6rem,2.7vw,2.3rem);
  font-weight:700;
  line-height:1.22;
}
.section-desc{
  margin-top:12px;
  color:var(--muted);
  font-size:1rem;
  line-height:1.85;
}

/* ---------- timeline ---------- */
.timeline{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:27px;
  top:16px;
  bottom:16px;
  width:2px;
  background:linear-gradient(180deg,rgba(52,227,196,.72),rgba(52,227,196,.06));
}
.step{
  position:relative;
  display:grid;
  grid-template-columns:56px 1fr;
  gap:20px;
  align-items:start;
}
.step-num{
  width:56px;
  height:56px;
  border-radius:18px;
  display:grid;
  place-items:center;
  background:var(--surface);
  border:1px solid var(--line-strong);
  color:var(--primary-strong);
  font-family:var(--font-num);
  font-size:19px;
  font-weight:800;
  box-shadow:0 0 22px rgba(52,227,196,.18);
  z-index:1;
}
.step-body{
  padding:22px 26px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--surface);
  box-shadow:var(--sh-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.step-body:hover{
  transform:translateY(-3px);
  border-color:var(--line-strong);
  box-shadow:var(--sh-float);
}
.step-body h3{
  font-size:1.18rem;
  font-weight:700;
  margin-bottom:8px;
}
.step-body p{color:#C3D9D7;font-size:.98rem}
.step-body .tag{margin-top:14px}

/* ---------- info grid ---------- */
.info-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.info-card{
  position:relative;
  padding:26px 26px 24px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--surface);
  box-shadow:var(--sh-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  overflow:hidden;
}
.info-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,rgba(52,227,196,.85),rgba(52,227,196,0));
}
.info-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--sh-float);
}
.info-card h3{
  font-size:1.1rem;
  font-weight:700;
  margin-bottom:10px;
}
.info-card p{color:#C3D9D7;font-size:.96rem;line-height:1.85}
.info-card .tag{margin-top:16px}

/* ---------- notice ---------- */
.notice-panel{
  border:1px solid rgba(255,138,92,.34);
  border-radius:var(--r-md);
  background:linear-gradient(120deg,rgba(255,138,92,.14),rgba(255,209,102,.05) 60%,rgba(15,38,48,.9));
  padding:26px 28px;
  box-shadow:var(--sh-card);
}
.notice-head{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding-bottom:18px;
  border-bottom:1px dashed rgba(255,138,92,.3);
}
.notice-head svg{
  width:24px;height:24px;
  flex:none;
  color:var(--secondary);
  margin-top:3px;
}
.notice-head p{color:#F3DCCF;font-size:1rem;line-height:1.8}
.notice-list{display:flex;flex-direction:column;gap:16px;margin-top:18px}
.notice-list li{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:16px;
  align-items:start;
}
.notice-list strong{
  color:var(--secondary);
  font-size:.95rem;
  font-weight:700;
}
.notice-list span{color:#C3D9D7;font-size:.96rem;line-height:1.85}

/* ---------- faq ---------- */
.faq-wrap{
  display:grid;
  grid-template-columns:.85fr 1.6fr;
  gap:48px;
  align-items:start;
}
.faq-side h2{
  font-size:clamp(1.6rem,2.6vw,2.2rem);
  font-weight:700;
}
.faq-side p{margin-top:12px;color:var(--muted);font-size:.96rem}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 6px;
  background:none;
  border:0;
  color:var(--text);
  font-size:1.05rem;
  font-weight:700;
  text-align:left;
  cursor:pointer;
  transition:background .2s ease,color .2s ease;
  border-radius:10px;
}
.faq-q:hover{background:rgba(52,227,196,.06);color:var(--primary-strong)}
.faq-q .idx{
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:.08em;
  color:var(--primary);
  flex:none;
}
.faq-q .sign{
  position:relative;
  margin-left:auto;
  width:20px;height:20px;
  flex:none;
  transition:transform .3s ease;
}
.faq-q .sign::before,
.faq-q .sign::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
}
.faq-q .sign::before{left:50%;top:0;width:2px;height:100%;transform:translateX(-50%)}
.faq-q .sign::after{top:50%;left:0;height:2px;width:100%;transform:translateY(-50%)}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-item.is-open .faq-a{max-height:400px}
.faq-a p{
  padding:0 6px 22px 36px;
  color:#C3D9D7;
  font-size:.96rem;
  line-height:1.9;
}

/* ---------- cta panel ---------- */
.cta-panel{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:1.45fr auto;
  gap:32px;
  align-items:center;
  padding:40px 44px;
  border-radius:var(--r-lg);
  border:1px solid rgba(52,227,196,.28);
  background:linear-gradient(115deg,rgba(18,49,61,.96),rgba(9,28,38,.96));
  box-shadow:var(--sh-float);
}
.cta-panel::before{
  content:"";
  position:absolute;
  width:420px;height:420px;
  right:-120px;top:-160px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(52,227,196,.26),transparent 68%);
  pointer-events:none;
}
.cta-panel h2{
  position:relative;
  font-size:clamp(1.5rem,2.5vw,2.05rem);
  font-weight:700;
  line-height:1.25;
}
.cta-panel p{
  position:relative;
  margin-top:12px;
  color:#C3D9D7;
  font-size:.98rem;
  max-width:46em;
}
.cta-actions{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  min-width:190px;
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:96px;
  padding-top:64px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,29,39,.92),#04101A);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.45fr 1fr 1fr 1.25fr;
  gap:40px;
}
.footer-brand p{
  margin-top:16px;
  max-width:300px;
  color:var(--muted);
  font-size:14px;
  line-height:1.85;
}
.footer-col h4{
  margin-bottom:16px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--primary-strong);
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  color:var(--muted);
  font-size:14.5px;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--primary)}
.footer-col--form .form-tip{margin-top:2px}
.subscribe-form{display:flex;flex-direction:column;gap:12px;margin-top:14px}
.field-label{
  display:block;
  margin-bottom:6px;
  font-size:13px;
  color:var(--muted);
}
.input{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#0A1E27;
  color:var(--text);
  font-size:15px;
  font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.input::placeholder{color:var(--muted)}
.input:hover{border-color:rgba(143,174,180,.32)}
.input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(52,227,196,.16);
}
.input.is-error{
  border-color:var(--secondary);
  box-shadow:0 0 0 3px rgba(255,138,92,.14);
}
.form-tip{font-size:12.5px;color:var(--muted);line-height:1.7}
.form-tip.is-error{color:var(--secondary)}
.form-tip.is-success{color:var(--success)}
.footer-bottom{
  margin-top:48px;
  padding:22px 0 28px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:var(--muted);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--container:1080px;--sec-y:76px}
  .container{padding:0 20px}
  .nav-side{gap:20px}
  .cta-panel{padding:36px 34px}
}

@media (max-width:991px){
  :root{--sec-y:64px}
  .nav-wrap{
    grid-template-columns:44px 1fr 44px;
    grid-template-areas:
      "toggle brand spacer"
      "left left left"
      "right right right";
    align-items:center;
    column-gap:10px;
    row-gap:0;
    height:auto;
    min-height:64px;
    padding:8px 16px;
  }
  .nav-toggle{display:flex;grid-area:toggle}
  .brand{grid-area:brand;justify-self:center}
  .brand-text span{display:none}
  .brand-text strong{font-size:15px;white-space:nowrap}
  .brand-mark{width:34px;height:34px;font-size:13px;border-radius:10px}
  .nav-side{
    grid-area:span;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    max-height:0;
    opacity:0;
    overflow:hidden;
    padding:0;
    transition:max-height .32s ease,opacity .25s ease,padding .32s ease;
  }
  .nav-side--left{grid-area:left}
  .nav-side--right{grid-area:right}
  body.nav-open .nav-side--left{max-height:220px;opacity:1;padding:6px 0 0}
  body.nav-open .nav-side--right{max-height:280px;opacity:1;padding:4px 0 12px}
  .nav-link{
    padding:13px 8px;
    font-size:16px;
    border-radius:12px;
  }
  .nav-link::after{display:none}
  .nav-link:hover,.nav-link:focus-visible{background:rgba(52,227,196,.1)}
  .nav-link.is-active{background:rgba(52,227,196,.12)}
  .nav-cta{width:100%;margin-top:8px}

  .page-hero-inner{
    grid-template-columns:1fr;
    gap:28px;
    padding:34px 26px 30px;
  }
  .hero-thumb{
    max-width:340px;
    aspect-ratio:4/3.4;
    justify-self:start;
  }
  .info-grid{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:26px}
  .cta-panel{grid-template-columns:1fr;gap:24px;padding:32px 28px}
  .cta-actions{flex-direction:row;flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .notice-list li{grid-template-columns:1fr;gap:4px}
}

@media (max-width:768px){
  :root{--sec-y:56px}
  body{font-size:16px}
  .section-head{margin-bottom:26px}
  .hero-copy h1{font-size:clamp(1.72rem,5.4vw,2.15rem)}
  .hero-facts{gap:22px}
  .step{grid-template-columns:46px 1fr;gap:16px}
  .step-num{width:46px;height:46px;border-radius:14px;font-size:16px}
  .timeline::before{left:22px}
  .step-body{padding:18px 20px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

@media (max-width:560px){
  .container{padding:0 16px}
  .page-hero-inner{padding:26px 18px 24px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:18px}
  .hero-facts strong{font-size:22px}
  .info-card{padding:20px 20px 18px}
  .notice-panel{padding:20px 20px}
  .faq-q{font-size:1rem;padding:16px 4px}
  .faq-a p{padding-left:26px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-panel{padding:26px 20px}
}

/* roulang page: category2 */
:root{
  --bg-0:#06131C;
  --bg-1:#0A1D27;
  --surface:#0F2630;
  --surface-2:#12313D;
  --glass:rgba(18,48,60,0.55);
  --primary:#34E3C4;
  --primary-strong:#7DFFE8;
  --secondary:#FF8A5C;
  --signal:#FFD166;
  --text:#EAF6F4;
  --muted:#8FAEB4;
  --line:rgba(143,174,180,0.18);
  --line-strong:rgba(52,227,196,0.42);
  --danger:#FF7A6B;
  --success:#4BE3A4;
  --radius-lg:28px;
  --radius:20px;
  --radius-sm:12px;
  --shadow:0 18px 48px rgba(0,0,0,0.28);
  --shadow-lg:0 24px 64px rgba(0,0,0,0.38);
  --glow:0 0 0 1px rgba(52,227,196,0.55),0 0 28px rgba(52,227,196,0.35),0 10px 24px rgba(0,0,0,0.35);
  --container:1240px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg-0);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 600px at 10% -12%,rgba(52,227,196,0.11),transparent 62%),
    radial-gradient(760px 520px at 92% 4%,rgba(255,138,92,0.07),transparent 64%),
    linear-gradient(180deg,#06131C 0%,#08171F 42%,#06131C 100%);
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:0.5;
  background-image:
    linear-gradient(rgba(143,174,180,0.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(143,174,180,0.055) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(1100px 700px at 50% 0%,#000 0%,transparent 78%);
  mask-image:radial-gradient(1100px 700px at 50% 0%,#000 0%,transparent 78%);
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(6,19,28,0.62);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{
  background:rgba(6,19,28,0.92);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px rgba(0,0,0,0.36);
}

.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:72px;
}

.nav-side{
  display:flex;
  align-items:center;
  gap:26px;
}
.nav-side--left{justify-self:start;}
.nav-side--right{justify-self:end;gap:20px;}

.nav-link{
  position:relative;
  font-size:.9375rem;
  font-weight:600;
  color:rgba(234,246,244,0.78);
  padding:6px 2px;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-2px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(52,227,196,0.9);
  transform:translateX(-50%);
  transition:width .24s ease;
}
.nav-link:hover{color:var(--primary-strong);}
.nav-link:hover::after{width:18px;}
.nav-link.is-active{color:var(--primary-strong);}
.nav-link.is-active::after{width:22px;}

.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  justify-self:center;
  transition:transform .24s ease;
}
.brand:hover{transform:translateY(-1px);}

.brand-mark{
  width:42px;
  height:42px;
  border-radius:13px;
  display:grid;
  place-items:center;
  font-family:var(--font-num);
  font-size:.9rem;
  font-weight:800;
  letter-spacing:.04em;
  color:#04202A;
  background:linear-gradient(160deg,#7DFFE8,#2BD3B6 70%,#1FBFA4);
  box-shadow:0 0 0 1px rgba(125,255,232,0.4),0 8px 22px rgba(52,227,196,0.28);
}

.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:1rem;font-weight:800;letter-spacing:.01em;color:var(--text);}
.brand-text span{font-size:.6875rem;color:var(--muted);letter-spacing:.08em;}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(15,38,48,0.7);
  color:var(--text);
  cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(18,49,61,0.9);}
.nav-toggle svg{width:22px;height:22px;}

.nav-entry-icon{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid rgba(52,227,196,0.36);
  background:rgba(52,227,196,0.1);
  color:var(--primary-strong);
}
.nav-entry-icon svg{width:20px;height:20px;}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:.9375rem;
  font-weight:700;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .24s ease,background .24s ease,border-color .24s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(180deg,#4BF0D2,#2BD3B6);
  color:#04202A;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  background:linear-gradient(180deg,#64FFE4,#37E0C2);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(125,255,232,0.65),0 0 34px rgba(52,227,196,0.45),0 12px 26px rgba(0,0,0,0.38);
}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-ghost{
  background:transparent;
  border-color:rgba(52,227,196,0.4);
  color:#BFF6EC;
}
.btn-ghost:hover{
  background:rgba(52,227,196,0.12);
  border-color:rgba(125,255,232,0.7);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0) scale(.99);}
.btn-sm{padding:9px 17px;font-size:.875rem;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{
  opacity:.45;
  box-shadow:none;
  cursor:not-allowed;
  transform:none;
}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.9375rem;
  font-weight:700;
  color:var(--primary);
  transition:color .2s ease;
}
.btn-text .arrow{transition:transform .22s ease;}
.btn-text:hover{color:var(--primary-strong);}
.btn-text:hover .arrow{transform:translateX(3px);}

/* ===== Breadcrumb ===== */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  color:var(--muted);
  margin-bottom:18px;
}
.crumbs a{color:var(--muted);transition:color .2s ease;}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{opacity:.55;}
.crumbs .current{color:rgba(234,246,244,0.82);}

/* ===== Category Hero ===== */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.28;
  filter:saturate(120%);
}
.cat-hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(115deg,rgba(6,19,28,0.96) 12%,rgba(6,19,28,0.74) 52%,rgba(6,19,28,0.92) 100%),
    radial-gradient(600px 380px at 78% 20%,rgba(52,227,196,0.16),transparent 70%);
}
.cat-hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:52px;
  align-items:center;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:.8125rem;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--primary-strong);
  background:rgba(52,227,196,0.1);
  border:1px solid rgba(52,227,196,0.32);
  margin-bottom:20px;
}
.eyebrow::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(52,227,196,0.95);
}

.cat-hero h1{
  font-size:clamp(2rem,4vw,3.1rem);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-0.01em;
  margin-bottom:18px;
}
.cat-hero h1 .hl{
  color:var(--primary-strong);
  text-shadow:0 0 26px rgba(52,227,196,0.4);
}
.cat-hero .lede{
  font-size:1.0625rem;
  line-height:1.85;
  color:rgba(234,246,244,0.78);
  max-width:34em;
  margin-bottom:28px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:34px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-facts li{
  display:flex;
  align-items:baseline;
  gap:9px;
  padding:10px 18px;
  border-radius:14px;
  background:rgba(15,38,48,0.72);
  border:1px solid var(--line);
}
.hero-facts strong{
  font-family:var(--font-num);
  font-size:1.375rem;
  font-weight:800;
  color:var(--primary-strong);
  line-height:1;
}
.hero-facts span{font-size:.8125rem;color:var(--muted);}

.cat-hero-media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(52,227,196,0.34);
  box-shadow:var(--shadow-lg),0 0 42px rgba(52,227,196,0.16);
  aspect-ratio:4/3;
}
.cat-hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.cat-hero-media:hover img{transform:scale(1.04);}
.cat-hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,19,28,0.05) 40%,rgba(6,19,28,0.82) 100%);
}
.media-tag{
  position:absolute;
  left:18px;
  bottom:16px;
  z-index:2;
  padding:6px 14px;
  border-radius:999px;
  font-size:.8125rem;
  font-weight:700;
  color:#04202A;
  background:rgba(125,255,232,0.92);
  box-shadow:0 8px 22px rgba(0,0,0,0.32);
}

/* ===== Sections ===== */
.section{padding:88px 0;position:relative;}
.section--tight{padding:72px 0;}

.section-head{
  max-width:760px;
  margin-bottom:40px;
}
.section-head h2{
  font-size:clamp(1.75rem,3vw,2.5rem);
  font-weight:700;
  line-height:1.22;
  margin-bottom:14px;
}
.section-head p{
  font-size:1.0625rem;
  color:rgba(234,246,244,0.74);
  line-height:1.85;
}
.section-head .kicker{
  display:inline-block;
  font-size:.8125rem;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--primary);
  margin-bottom:12px;
}

/* ===== Feature modules ===== */
.feature-list{display:flex;flex-direction:column;gap:20px;}

.feature-item{
  display:grid;
  grid-template-columns:.78fr 1.42fr;
  gap:40px;
  padding:32px;
  border-radius:var(--radius);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.feature-item:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 24px 56px rgba(0,0,0,0.4),0 0 0 1px rgba(52,227,196,0.14);
}

.feature-item:nth-child(even) .feature-left{order:2;}
.feature-item:nth-child(even) .feature-right{order:1;}

.feature-left{display:flex;flex-direction:column;gap:12px;}
.feature-num{
  font-family:var(--font-num);
  font-size:.875rem;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--primary);
}
.feature-left h3{
  font-size:1.25rem;
  font-weight:700;
  line-height:1.4;
}
.feature-loc{
  display:inline-flex;
  align-items:flex-start;
  gap:8px;
  font-size:.875rem;
  line-height:1.7;
  color:var(--muted);
}
.feature-loc svg{
  width:16px;
  height:16px;
  flex:0 0 16px;
  margin-top:4px;
  color:var(--primary);
}

.feature-right p{
  font-size:1rem;
  line-height:1.85;
  color:rgba(234,246,244,0.8);
  margin-bottom:16px;
}
.feature-points{
  display:grid;
  gap:10px;
}
.feature-points li{
  position:relative;
  padding-left:22px;
  font-size:.9375rem;
  line-height:1.75;
  color:rgba(234,246,244,0.76);
}
.feature-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(52,227,196,0.6);
  transform:rotate(45deg);
}
.feature-note{
  margin-top:18px;
  padding:12px 16px;
  border-radius:12px;
  border-left:3px solid var(--signal);
  background:rgba(255,209,102,0.07);
  font-size:.875rem;
  line-height:1.75;
  color:rgba(255,209,102,0.92);
}

/* ===== Clip rail ===== */
.clip-rail{
  display:flex;
  gap:18px;
  overflow-x:auto;
  padding:4px 4px 22px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  scrollbar-color:rgba(52,227,196,0.4) transparent;
}
.clip-rail::-webkit-scrollbar{height:6px;}
.clip-rail::-webkit-scrollbar-thumb{background:rgba(52,227,196,0.35);border-radius:999px;}
.clip-rail::-webkit-scrollbar-track{background:rgba(143,174,180,0.09);border-radius:999px;}

.clip-card{
  position:relative;
  flex:0 0 clamp(200px,22vw,258px);
  scroll-snap-align:start;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.clip-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 24px 56px rgba(0,0,0,0.42);
}
.clip-thumb{
  position:relative;
  aspect-ratio:4/5;
  overflow:hidden;
}
.clip-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .55s ease;
}
.clip-card:hover .clip-thumb img{transform:scale(1.05);}
.clip-thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,19,28,0.1) 30%,rgba(6,19,28,0.9) 100%);
}
.clip-play{
  position:absolute;
  top:14px;
  left:14px;
  z-index:2;
  width:34px;
  height:34px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:rgba(6,19,28,0.6);
  border:1px solid rgba(125,255,232,0.55);
  color:var(--primary-strong);
  backdrop-filter:blur(8px);
}
.clip-play svg{width:14px;height:14px;}
.clip-duration{
  position:absolute;
  right:12px;
  top:16px;
  z-index:2;
  font-family:var(--font-num);
  font-size:.75rem;
  font-weight:700;
  color:var(--text);
  background:rgba(6,19,28,0.66);
  border-radius:999px;
  padding:3px 10px;
  border:1px solid rgba(143,174,180,0.24);
}
.clip-body{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  padding:16px;
}
.clip-body h3{
  font-size:1rem;
  font-weight:700;
  line-height:1.45;
  margin-bottom:6px;
}
.clip-body p{
  font-size:.8125rem;
  color:rgba(234,246,244,0.7);
  line-height:1.6;
}

/* ===== Parameter table ===== */
.table-wrap{
  overflow-x:auto;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow);
}
table{
  width:100%;
  min-width:720px;
  border-collapse:collapse;
  font-size:.9375rem;
}
thead th{
  text-align:left;
  padding:15px 20px;
  font-size:.8125rem;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--primary-strong);
  background:var(--surface-2);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
tbody td{
  padding:15px 20px;
  border-bottom:1px solid var(--line);
  color:rgba(234,246,244,0.84);
  vertical-align:top;
  line-height:1.7;
}
tbody tr:nth-child(even){background:rgba(255,255,255,0.022);}
tbody tr:hover{background:rgba(52,227,196,0.06);}
tbody tr:last-child td{border-bottom:none;}
tbody td:first-child{font-weight:700;color:var(--text);}

.pill{
  display:inline-block;
  padding:2px 11px;
  border-radius:999px;
  font-size:.75rem;
  font-weight:700;
  line-height:1.8;
}
.pill-yes{color:#04202A;background:rgba(125,255,232,0.9);}
.pill-no{color:rgba(234,246,244,0.8);background:rgba(143,174,180,0.16);}
.pill-hot{color:#3A1B08;background:rgba(255,209,102,0.9);}

/* ===== FAQ ===== */
.faq-layout{
  display:grid;
  grid-template-columns:.72fr 1.28fr;
  gap:56px;
  align-items:start;
}
.faq-side .kicker{
  display:inline-block;
  font-size:.8125rem;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--primary);
  margin-bottom:12px;
}
.faq-side h2{
  font-size:clamp(1.75rem,3vw,2.35rem);
  line-height:1.24;
  font-weight:700;
  margin-bottom:16px;
}
.faq-side p{
  font-size:1rem;
  line-height:1.85;
  color:rgba(234,246,244,0.74);
  margin-bottom:24px;
}
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  min-height:62px;
  padding:14px 4px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:1rem;
  font-weight:700;
  text-align:left;
  cursor:pointer;
  transition:color .2s ease,background .2s ease;
}
.faq-q:hover{color:var(--primary-strong);background:rgba(52,227,196,0.05);}
.faq-q .idx{
  font-family:var(--font-num);
  font-size:.8125rem;
  font-weight:800;
  color:var(--primary);
  letter-spacing:.08em;
  flex:0 0 auto;
}
.faq-q .q-text{flex:1;}
.faq-q .plus{
  flex:0 0 auto;
  width:26px;
  height:26px;
  border-radius:50%;
  border:1px solid rgba(52,227,196,0.4);
  display:grid;
  place-items:center;
  color:var(--primary);
  transition:transform .3s ease,background .24s ease;
}
.faq-q .plus svg{width:13px;height:13px;}
.faq-item.is-open .faq-q .plus{
  transform:rotate(45deg);
  background:rgba(52,227,196,0.16);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .36s ease;
}
.faq-a p{
  padding:0 4px 22px 42px;
  font-size:.9375rem;
  line-height:1.9;
  color:rgba(234,246,244,0.76);
}

/* ===== CTA ===== */
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid rgba(52,227,196,0.3);
  background:
    radial-gradient(680px 340px at 12% 10%,rgba(52,227,196,0.16),transparent 70%),
    linear-gradient(150deg,#10303C,#0C222C 62%,#0A1D27);
  box-shadow:var(--shadow-lg);
  padding:52px 48px;
  display:grid;
  grid-template-columns:1.4fr .6fr;
  gap:36px;
  align-items:center;
}
.cta-panel h2{
  font-size:clamp(1.5rem,2.6vw,2.15rem);
  line-height:1.26;
  font-weight:700;
  margin-bottom:14px;
}
.cta-panel p{
  font-size:1rem;
  line-height:1.85;
  color:rgba(234,246,244,0.76);
  max-width:38em;
}
.cta-actions{
  display:flex;
  flex-direction:column;
  gap:12px;
}

/* ===== Footer ===== */
.site-footer{
  position:relative;
  z-index:1;
  border-top:1px solid var(--line);
  background:rgba(6,19,28,0.86);
  padding:64px 0 28px;
  margin-top:40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.35fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-col h4{
  font-size:.9375rem;
  font-weight:700;
  margin-bottom:16px;
  color:var(--text);
}
.footer-brand p{
  margin-top:16px;
  font-size:.9375rem;
  line-height:1.8;
  color:var(--muted);
  max-width:26em;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{
  font-size:.9375rem;
  color:var(--muted);
  transition:color .2s ease;
}
.footer-col ul a:hover{color:var(--primary);}

.form-tip{
  font-size:.8125rem;
  line-height:1.7;
  color:var(--muted);
  margin-bottom:12px;
}
.subscribe-form{display:grid;gap:12px;}
.field-label{
  display:block;
  font-size:.8125rem;
  font-weight:600;
  color:rgba(234,246,244,0.8);
  margin-bottom:7px;
}
.input{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#0A1E27;
  color:var(--text);
  font-family:inherit;
  font-size:.9375rem;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.input::placeholder{color:var(--muted);}
.input:hover{border-color:rgba(143,174,180,0.34);}
.input:focus{
  outline:none;
  border-color:var(--primary);
  background:#0B222C;
  box-shadow:0 0 0 3px rgba(52,227,196,0.16);
}
.input.is-error{
  border-color:var(--danger);
  box-shadow:0 0 0 3px rgba(255,122,107,0.16);
}
.field-msg{
  font-size:.8125rem;
  line-height:1.6;
  margin:0;
  color:var(--muted);
}
.field-msg.is-error{color:var(--danger);}
.field-msg.is-success{color:var(--success);}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:.8125rem;
  color:var(--muted);
}

/* ===== Mobile drawer ===== */
.drawer{
  position:fixed;
  inset:0;
  z-index:200;
  display:none;
}
.drawer.is-open{display:block;}
.drawer-mask{
  position:absolute;
  inset:0;
  background:rgba(3,10,15,0.68);
  backdrop-filter:blur(3px);
  opacity:0;
  transition:opacity .26s ease;
}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;
  top:0;
  left:0;
  right:0;
  background:rgba(10,24,32,0.96);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(52,227,196,0.24);
  border-radius:0 0 24px 24px;
  padding:18px 20px 26px;
  transform:translateY(-14px);
  opacity:0;
  transition:transform .3s ease,opacity .3s ease;
}
.drawer.is-open .drawer-panel{transform:translateY(0);opacity:1;}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
  margin-bottom:14px;
}
.drawer-title{font-size:.875rem;font-weight:700;letter-spacing:.14em;color:var(--primary);}
.drawer-close{
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(15,38,48,0.8);
  color:var(--text);
  font-size:1.25rem;
  line-height:1;
  cursor:pointer;
}
.drawer-nav{display:grid;gap:4px;margin-bottom:18px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 12px;
  border-radius:12px;
  font-size:1.0625rem;
  font-weight:700;
  color:rgba(234,246,244,0.86);
  transition:background .2s ease,color .2s ease;
}
.drawer-nav a:hover,.drawer-nav a.is-active{
  background:rgba(52,227,196,0.12);
  color:var(--primary-strong);
}
.drawer-cta{width:100%;}

body.no-scroll{overflow:hidden;}

/* ===== States ===== */
.empty-box{
  display:grid;
  place-items:center;
  gap:10px;
  padding:42px 24px;
  border:1px dashed rgba(143,174,180,0.34);
  border-radius:var(--radius);
  color:var(--muted);
  font-size:.875rem;
  text-align:center;
}
.empty-box svg{width:28px;height:28px;color:rgba(143,174,180,0.6);}

.skeleton{
  border-radius:8px;
  background:linear-gradient(90deg,#102F3A 25%,#173F4B 37%,#102F3A 63%);
  background-size:400% 100%;
  animation:skeletonLoad 1.4s ease infinite;
}
@keyframes skeletonLoad{
  0%{background-position:100% 0;}
  100%{background-position:0 0;}
}

/* ===== Responsive ===== */
@media (max-width:1200px){
  .container{max-width:1080px;padding:0 20px;}
  .nav-wrap{gap:18px;}
  .nav-side{gap:20px;}
  .cat-hero-inner{gap:38px;}
  .faq-layout{gap:40px;}
}

@media (max-width:991px){
  .section{padding:64px 0;}
  .cat-hero{padding:44px 0 52px;}
  .cat-hero-inner{grid-template-columns:1fr;gap:32px;}
  .cat-hero-media{max-width:520px;aspect-ratio:16/10;}
  .feature-item{grid-template-columns:1fr;gap:22px;padding:26px;}
  .feature-item:nth-child(even) .feature-left{order:0;}
  .feature-item:nth-child(even) .feature-right{order:0;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .cta-panel{grid-template-columns:1fr;padding:40px 32px;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}

@media (max-width:768px){
  .nav-wrap{grid-template-columns:44px 1fr 44px;height:64px;gap:8px;}
  .nav-side{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-entry-icon{display:inline-flex;justify-self:end;}
  .brand{gap:8px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:.75rem;}
  .brand-text strong{font-size:.875rem;line-height:1.2;}
  .brand-text span{display:none;}

  .section{padding:56px 0;}
  .cat-hero h1{font-size:clamp(1.75rem,5.6vw,2.4rem);}
  .cat-hero .lede{font-size:1rem;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-facts li{flex:1 1 30%;justify-content:center;}
  .section-head{margin-bottom:28px;}
  .section-head p{font-size:1rem;}
  .faq-a p{padding-left:4px;}
  .cta-panel{padding:32px 24px;}
  .cta-actions{flex-direction:column;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-col--form{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;}
}

@media (max-width:560px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .cat-hero{padding:36px 0 44px;}
  .hero-facts{gap:10px;}
  .hero-facts li{padding:9px 12px;flex:1 1 46%;}
  .hero-facts strong{font-size:1.15rem;}
  .hero-facts span{font-size:.75rem;}
  .clip-card{flex:0 0 74vw;}
  .feature-note{font-size:.8125rem;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .btn{padding:12px 20px;font-size:.9375rem;}
}

@media (max-width:480px){
  body{font-size:16px;}
  .cat-hero h1{font-size:1.9rem;}
  .cat-hero .lede{font-size:.9375rem;}
  .feature-item{padding:22px 18px;}
  .feature-left h3{font-size:1.125rem;}
  .faq-q{font-size:.9375rem;}
  .cta-panel{padding:28px 18px;}
  .media-tag{font-size:.75rem;left:14px;bottom:12px;}
}

/* roulang page: category3 */
:root{
  --bg-0:#06131C;
  --bg-1:#0A1D27;
  --surface:#0F2630;
  --surface-2:#12313D;
  --glass:rgba(18,48,60,.55);
  --primary:#34E3C4;
  --primary-strong:#7DFFE8;
  --secondary:#FF8A5C;
  --signal:#FFD166;
  --text:#EAF6F4;
  --muted:#8FAEB4;
  --line:rgba(143,174,180,.18);
  --line-strong:rgba(52,227,196,.42);
  --danger:#FF7A6B;
  --success:#4BE3A4;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-card:0 18px 48px rgba(0,0,0,.28);
  --shadow-float:0 24px 64px rgba(0,0,0,.38);
  --glow:0 0 0 1px rgba(52,227,196,.55),0 0 28px rgba(52,227,196,.35),0 10px 24px rgba(0,0,0,.35);
  --section:88px;
  --font-base:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-base);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(143,174,180,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(143,174,180,.05) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
  -webkit-mask-image:radial-gradient(circle at 50% 12%,#000 0%,rgba(0,0,0,.35) 55%,transparent 82%);
  mask-image:radial-gradient(circle at 50% 12%,#000 0%,rgba(0,0,0,.35) 55%,transparent 82%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(680px 420px at 82% -6%,rgba(52,227,196,.13),transparent 70%),
    radial-gradient(520px 360px at 6% 24%,rgba(255,138,92,.07),transparent 72%);
  pointer-events:none;
  z-index:0;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit;color:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
::selection{background:rgba(52,227,196,.3);color:#fff}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:.9375rem;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn svg{width:16px;height:16px;transition:transform .2s ease}
.btn-primary{background:var(--primary);color:#04222A;box-shadow:var(--glow)}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0) scale(.99);box-shadow:0 0 0 1px rgba(52,227,196,.5),0 0 14px rgba(52,227,196,.28)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--primary-strong)}
.btn-ghost:hover{background:rgba(52,227,196,.1);border-color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-sm{padding:10px 18px;font-size:.875rem}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:700;font-size:.9375rem;padding:4px 0}
.btn-text svg{width:15px;height:15px;transition:transform .2s ease}
.btn-text:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(6,19,28,.74);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,19,28,.93);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px rgba(0,0,0,.36);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.nav-side{display:flex;align-items:center;gap:22px}
.nav-side--left{justify-self:start}
.nav-side--right{justify-self:end;gap:16px}
.nav-link{
  position:relative;
  font-size:.9375rem;
  font-weight:600;
  color:rgba(234,246,244,.84);
  padding:6px 2px;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-4px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .22s ease;
  box-shadow:0 0 10px rgba(52,227,196,.7);
}
.nav-link:hover{color:var(--primary-strong)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary-strong)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{
  content:"";
  position:absolute;
  left:50%;
  top:-9px;
  width:5px;
  height:5px;
  margin-left:-2.5px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(52,227,196,.9);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  justify-self:center;
  padding:6px 10px;
  border-radius:14px;
  transition:background .2s ease;
}
.brand:hover{background:rgba(52,227,196,.07)}
.brand-mark{
  width:42px;
  height:42px;
  flex:0 0 auto;
  display:grid;
  place-items:center;
  border-radius:14px;
  font-family:var(--font-num);
  font-size:.9375rem;
  font-weight:700;
  letter-spacing:.04em;
  color:#04222A;
  background:linear-gradient(150deg,var(--primary-strong),var(--primary));
  box-shadow:0 0 0 1px rgba(52,227,196,.5),0 0 22px rgba(52,227,196,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:1.0625rem;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.brand-text span{font-size:.75rem;color:var(--muted);letter-spacing:.12em}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  align-items:center;
  justify-content:center;
  color:var(--text);
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(52,227,196,.1);border-color:var(--line-strong)}
.nav-toggle svg{width:22px;height:22px}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;
  padding:40px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(180deg,rgba(6,19,28,.62),rgba(6,19,28,.96)),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.9;
  z-index:0;
}
.page-hero::after{
  content:"";
  position:absolute;
  left:50%;
  top:-120px;
  width:760px;
  height:460px;
  transform:translateX(-50%);
  background:radial-gradient(closest-side,rgba(52,227,196,.16),transparent 72%);
  pointer-events:none;
  z-index:0;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:48px;
  align-items:center;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  color:var(--muted);
  margin-bottom:22px;
}
.crumbs a{color:var(--muted);transition:color .2s ease}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{opacity:.55}
.crumbs .now{color:var(--primary-strong)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(52,227,196,.08);
  font-size:.8125rem;
  font-weight:600;
  color:var(--primary-strong);
  letter-spacing:.04em;
  margin-bottom:20px;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(52,227,196,.9);
}
h1{
  font-size:clamp(2.5rem,5vw,4rem);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.01em;
}
h1 .accent{color:var(--primary)}
.hero-sub{
  margin-top:20px;
  max-width:600px;
  font-size:1.0625rem;
  line-height:1.85;
  color:rgba(234,246,244,.82);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.stat{
  flex:1 1 150px;
  min-width:140px;
  padding:14px 18px;
  border-radius:16px;
  background:var(--surface);
  border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.stat:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.stat b{
  display:block;
  font-family:var(--font-num);
  font-size:1.375rem;
  font-weight:700;
  color:var(--primary-strong);
  letter-spacing:.02em;
}
.stat span{font-size:.8125rem;color:var(--muted)}

.hero-visual{position:relative}
.visual-frame{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(52,227,196,.35);
  box-shadow:var(--shadow-float),0 0 34px rgba(52,227,196,.14);
  aspect-ratio:4/3;
}
.visual-frame img{width:100%;height:100%;object-fit:cover}
.visual-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,19,28,.05) 30%,rgba(6,19,28,.78));
}
.visual-tag{
  position:absolute;
  left:18px;
  top:18px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 12px;
  border-radius:var(--r-pill);
  background:rgba(6,19,28,.68);
  border:1px solid rgba(52,227,196,.4);
  font-size:.75rem;
  color:var(--primary-strong);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.visual-caption{
  position:absolute;
  left:18px;
  right:18px;
  bottom:18px;
  z-index:2;
  font-size:.8125rem;
  color:rgba(234,246,244,.86);
  line-height:1.6;
}
.float-card{
  position:absolute;
  right:-14px;
  bottom:-22px;
  z-index:3;
  display:flex;
  gap:16px;
  padding:14px 18px;
  border-radius:18px;
  background:var(--glass);
  border:1px solid rgba(52,227,196,.22);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-float);
}
.float-card div{display:flex;flex-direction:column;line-height:1.3}
.float-card b{font-family:var(--font-num);font-size:1.125rem;color:var(--primary-strong)}
.float-card small{font-size:.6875rem;color:var(--muted)}

/* ============ 通用区块 ============ */
.section{padding:var(--section) 0;position:relative;z-index:1}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{
  font-size:clamp(1.75rem,3vw,2.5rem);
  font-weight:700;
  line-height:1.24;
  letter-spacing:-.005em;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:1rem;line-height:1.85}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:var(--r-pill);
  font-size:.75rem;
  font-weight:600;
  border:1px solid var(--line);
  color:var(--muted);
  background:rgba(143,174,180,.06);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag--primary{color:var(--primary-strong);border-color:rgba(52,227,196,.36);background:rgba(52,227,196,.09)}
.tag--warn{color:#FFC0A3;border-color:rgba(255,138,92,.36);background:rgba(255,138,92,.1)}
.tag--signal{color:#FFE3A3;border-color:rgba(255,209,102,.36);background:rgba(255,209,102,.1)}

/* ============ 警示条 ============ */
.alert-band{
  position:relative;
  z-index:1;
  display:flex;
  gap:18px;
  align-items:flex-start;
  padding:22px 24px;
  border-radius:var(--r-md);
  border:1px solid rgba(255,138,92,.32);
  border-left:4px solid var(--secondary);
  background:linear-gradient(90deg,rgba(255,138,92,.1),rgba(15,38,48,.5));
  box-shadow:var(--shadow-card);
}
.alert-icon{
  flex:0 0 auto;
  width:42px;
  height:42px;
  display:grid;
  place-items:center;
  border-radius:12px;
  color:var(--secondary);
  background:rgba(255,138,92,.14);
  border:1px solid rgba(255,138,92,.28);
}
.alert-icon svg{width:22px;height:22px}
.alert-band h3{font-size:1.0625rem;font-weight:700;margin-bottom:6px;color:#FFD3BE}
.alert-band p{font-size:.9375rem;color:rgba(234,246,244,.82);line-height:1.8;max-width:920px}

/* ============ 核对清单 ============ */
.check-grid{
  display:grid;
  grid-template-columns:.78fr 1.22fr;
  gap:56px;
  align-items:start;
}
.check-intro{position:sticky;top:104px}
.check-intro h2{
  font-size:clamp(1.75rem,3vw,2.4rem);
  line-height:1.26;
  font-weight:700;
}
.check-intro p{margin-top:16px;color:var(--muted);line-height:1.9}
.check-intro .btn{margin-top:26px}
.check-list{border-top:1px solid var(--line)}
.check-item{
  display:grid;
  grid-template-columns:52px 1fr;
  gap:16px;
  padding:24px 6px;
  border-bottom:1px solid var(--line);
  transition:background .2s ease,padding-left .2s ease;
}
.check-item:hover{background:rgba(52,227,196,.045);padding-left:12px}
.check-no{
  font-family:var(--font-num);
  font-size:1.0625rem;
  font-weight:700;
  color:var(--primary);
  letter-spacing:.08em;
  padding-top:2px;
}
.check-body h3{font-size:1.125rem;font-weight:700;line-height:1.5}
.check-body p{margin-top:8px;font-size:.9375rem;color:var(--muted);line-height:1.85}
.check-body .tag{margin-top:12px}

/* ============ FAQ ============ */
.faq-section{background:linear-gradient(180deg,rgba(10,29,39,.72),rgba(6,19,28,0))}
.faq-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside h2{font-size:clamp(1.75rem,3vw,2.4rem);line-height:1.26;font-weight:700}
.faq-aside p{margin-top:16px;color:var(--muted);line-height:1.9}
.aside-note{
  margin-top:26px;
  padding:18px 20px;
  border-radius:16px;
  background:var(--surface);
  border:1px solid var(--line);
}
.aside-note h3{font-size:.9375rem;color:var(--primary-strong);margin-bottom:8px}
.aside-note p{font-size:.875rem;color:var(--muted);line-height:1.8;margin:0}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-h{margin:0}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  min-height:56px;
  padding:18px 6px;
  text-align:left;
  transition:background .2s ease;
}
.faq-q:hover{background:rgba(52,227,196,.05)}
.faq-no{
  flex:0 0 auto;
  font-family:var(--font-num);
  font-size:.875rem;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--primary);
}
.faq-title{flex:1;font-size:1.0625rem;font-weight:700;line-height:1.55}
.faq-plus{
  position:relative;
  flex:0 0 auto;
  width:22px;
  height:22px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  transition:border-color .2s ease,background .2s ease;
}
.faq-plus::before,.faq-plus::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--primary);
  transform:translate(-50%,-50%);
  transition:transform .26s ease,opacity .26s ease;
}
.faq-plus::before{width:10px;height:1.5px}
.faq-plus::after{width:1.5px;height:10px}
.faq-q:hover .faq-plus{background:rgba(52,227,196,.12);border-color:var(--primary)}
.faq-q[aria-expanded="true"] .faq-plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s ease;
}
.faq-a p{
  padding:0 6px 22px 40px;
  font-size:.9375rem;
  line-height:1.9;
  color:var(--muted);
}

/* ============ 处理路径 ============ */
.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.path-card{
  position:relative;
  padding:26px 24px 28px;
  border-radius:var(--r-md);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.path-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 24px 56px rgba(0,0,0,.34)}
.path-step{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-num);
  font-size:.8125rem;
  letter-spacing:.1em;
  color:var(--primary);
  margin-bottom:16px;
}
.path-card h3{font-size:1.125rem;font-weight:700;line-height:1.5}
.path-card p{margin-top:10px;font-size:.9375rem;color:var(--muted);line-height:1.85}
.path-card::after{
  content:"";
  position:absolute;
  right:20px;
  top:24px;
  width:34px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--line-strong));
}

/* ============ 反馈与核对卡片 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.panel{
  padding:30px;
  border-radius:var(--r-lg);
  background:var(--surface-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:border-color .22s ease,transform .22s ease;
}
.panel:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.panel h3{font-size:1.25rem;font-weight:700;margin-bottom:10px}
.panel > p{color:var(--muted);font-size:.9375rem;line-height:1.85}
.panel-list{margin-top:20px;display:grid;gap:12px}
.panel-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:.9375rem;
  color:rgba(234,246,244,.86);
  line-height:1.8;
}
.panel-list li svg{flex:0 0 auto;width:18px;height:18px;margin-top:5px;color:var(--primary)}
.panel-actions{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px}
.panel-media{
  margin-top:22px;
  border-radius:18px;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/9;
}
.panel-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.panel:hover .panel-media img{transform:scale(1.03)}
.link-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.link-chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:9px 15px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  font-size:.875rem;
  color:rgba(234,246,244,.86);
  background:rgba(143,174,180,.05);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.link-chip:hover{border-color:var(--line-strong);color:var(--primary-strong);background:rgba(52,227,196,.1);transform:translateY(-1px)}
.link-chip svg{width:14px;height:14px}

/* ============ CTA ============ */
.cta-panel{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:32px;
  align-items:center;
  padding:44px 44px;
  border-radius:var(--r-lg);
  border:1px solid rgba(52,227,196,.3);
  background:
    radial-gradient(560px 320px at 88% 0%,rgba(52,227,196,.18),transparent 70%),
    linear-gradient(140deg,#0C2731,#0A1D27 62%);
  box-shadow:var(--shadow-float);
}
.cta-panel h2{font-size:clamp(1.5rem,2.6vw,2.125rem);line-height:1.3;font-weight:700}
.cta-panel p{margin-top:12px;color:var(--muted);font-size:.9688rem;line-height:1.85;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:0;
  padding:64px 0 26px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,29,39,.6),rgba(6,19,28,.95));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-col h4{font-size:.9375rem;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:11px}
.footer-col ul a{font-size:.9375rem;color:var(--muted);transition:color .2s ease}
.footer-col ul a:hover{color:var(--primary)}
.footer-brand .brand{justify-self:start;padding-left:0;margin-bottom:16px}
.footer-brand p{font-size:.875rem;color:var(--muted);line-height:1.85;max-width:280px}
.form-tip{font-size:.8125rem;color:var(--muted);line-height:1.7;margin:8px 0 0}
.field-label{display:block;font-size:.8125rem;color:var(--muted);margin-bottom:8px}
.input{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:var(--r-sm);
  background:#0A1E27;
  border:1px solid var(--line);
  color:var(--text);
  font-size:.9375rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.input::placeholder{color:rgba(143,174,180,.8)}
.input:hover{border-color:rgba(143,174,180,.34)}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(52,227,196,.16)}
.input.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,122,107,.14)}
.subscribe-form{display:grid;gap:12px;margin-top:4px}
.subscribe-form .btn{width:100%}
.form-tip.is-error{color:var(--danger)}
.form-tip.is-success{color:var(--success)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding-top:22px;
  font-size:.8125rem;
  color:rgba(143,174,180,.86);
}

/* ============ 状态样式 ============ */
.skeleton{
  background:linear-gradient(90deg,#102F3A,#173F4B,#102F3A);
  background-size:200% 100%;
  animation:sk 1.4s ease-in-out infinite;
  border-radius:12px;
}
@keyframes sk{0%{background-position:0 0}100%{background-position:-200% 0}}
.empty-state{
  display:grid;
  place-items:center;
  gap:10px;
  padding:36px 20px;
  border:1px dashed var(--line);
  border-radius:var(--r-md);
  color:var(--muted);
  font-size:.875rem;
  text-align:center;
}
.empty-state svg{width:26px;height:26px;color:var(--line-strong)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{max-width:1080px;padding:0 20px}
  :root{--section:76px}
  .hero-grid{gap:36px}
  .check-grid,.faq-grid{gap:40px}
}
@media (max-width:991px){
  :root{--section:64px}
  .nav-wrap{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:0 8px;
    min-height:64px;
    padding-top:8px;
    padding-bottom:8px;
  }
  .nav-toggle{display:inline-flex;order:1;flex:0 0 auto}
  .brand{order:2;margin:0 auto 0 6px;padding:4px 8px}
  .brand-text strong{font-size:.9375rem}
  .brand-text span{display:none}
  .nav-side{gap:0}
  .nav-side--left{order:4;display:none;width:100%;flex-direction:column;align-items:stretch}
  .nav-side--right{order:3;display:flex;align-items:center;gap:8px}
  .nav-side--right .nav-link{display:none}
  .nav-side--right .nav-cta{font-size:.8125rem;padding:8px 14px}
  .site-header.nav-open .nav-side--left{
    display:flex;
    padding:12px 0 4px;
    margin-top:12px;
    border-top:1px solid var(--line);
  }
  .site-header.nav-open .nav-side--right{
    order:5;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding-bottom:10px;
  }
  .site-header.nav-open .nav-side--right .nav-link{display:block}
  .site-header.nav-open .nav-side--right .nav-cta{margin-top:8px;justify-content:center;padding:12px 18px;font-size:.875rem}
  .site-header.nav-open .nav-link{padding:12px 6px;border-bottom:1px solid rgba(143,174,180,.12)}
  .site-header.nav-open .nav-link::after{display:none}
  .site-header.nav-open .nav-link.is-active::before{display:none}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .page-hero{padding:28px 0 56px}
  .hero-visual{max-width:520px}
  .float-card{right:8px;bottom:-18px}
  .check-grid,.faq-grid{grid-template-columns:1fr;gap:32px}
  .check-intro,.faq-aside{position:static}
  .path-grid{grid-template-columns:1fr;gap:16px}
  .contact-grid{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;padding:34px 28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  :root{--section:56px}
  h1{font-size:clamp(2rem,7.4vw,2.5rem)}
  .hero-sub{font-size:1rem}
  .hero-stats{gap:10px}
  .stat{flex:1 1 44%;min-width:0;padding:12px 14px}
  .alert-band{flex-direction:column;gap:12px;padding:20px}
  .faq-a p{padding-left:6px}
  .panel{padding:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col--form{grid-column:1/-1}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .hero-actions .btn{flex:1 1 100%}
  .stat{flex:1 1 100%}
  .cta-panel{padding:28px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
  .brand-mark{width:38px;height:38px;border-radius:12px}
  .check-item{grid-template-columns:38px 1fr;gap:12px}
  .panel-actions .btn{flex:1 1 100%}
}
@media (max-width:420px){
  h1{font-size:1.875rem}
  .faq-title{font-size:1rem}
  .check-body h3{font-size:1.0625rem}
}

/* roulang page: category4 */
:root{
  --bg-0:#06131C;
  --bg-1:#0A1D27;
  --surface:#0F2630;
  --surface-2:#12313D;
  --glass:rgba(18,48,60,.55);
  --primary:#34E3C4;
  --primary-strong:#7DFFE8;
  --secondary:#FF8A5C;
  --signal:#FFD166;
  --text:#EAF6F4;
  --muted:#8FAEB4;
  --line:rgba(143,174,180,.18);
  --line-strong:rgba(52,227,196,.42);
  --danger:#FF7A6B;
  --success:#4BE3A4;
  --radius-lg:28px;
  --radius-md:20px;
  --radius-sm:12px;
  --shadow-card:0 18px 48px rgba(0,0,0,.28);
  --shadow-float:0 24px 64px rgba(0,0,0,.38);
  --shadow-glow:0 0 0 1px rgba(52,227,196,.55),0 0 28px rgba(52,227,196,.35),0 10px 24px rgba(0,0,0,.35);
  --container:1240px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bahnschrift",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:1rem;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 80% -10%,rgba(52,227,196,.13),transparent 62%),
    radial-gradient(700px 430px at 4% 16%,rgba(255,138,92,.07),transparent 60%),
    var(--bg-0);
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(143,174,180,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(143,174,180,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:visited{color:inherit;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.22;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(6,19,28,.62);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(6,19,28,.92);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px rgba(0,0,0,.34);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.nav-side{display:flex;align-items:center;gap:24px;}
.nav-side--left{justify-self:start;}
.nav-side--right{justify-self:end;}
.nav-link{
  position:relative;
  font-size:.9375rem;
  font-weight:500;
  color:var(--text);
  padding:6px 2px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .26s ease,box-shadow .26s ease;
}
.nav-link:hover{color:var(--primary-strong);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--primary-strong);}
.nav-link.is-active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(52,227,196,.75);}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  justify-self:center;
  min-width:0;
}
.brand-mark{
  width:38px;height:38px;
  flex:0 0 38px;
  display:grid;
  place-items:center;
  border-radius:12px;
  font-family:var(--font-num);
  font-size:.9375rem;
  font-weight:700;
  color:#04211C;
  background:linear-gradient(150deg,var(--primary-strong),var(--primary));
  box-shadow:0 0 18px rgba(52,227,196,.4);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{
  font-size:1.0625rem;
  font-weight:800;
  letter-spacing:0;
  color:var(--text);
  white-space:nowrap;
}
.brand-text span{
  font-size:.75rem;
  color:var(--muted);
  letter-spacing:.04em;
  white-space:nowrap;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(15,38,48,.8);
  color:var(--text);
  transition:border-color .22s ease,background .22s ease;
}
.nav-toggle svg{width:22px;height:22px;}
.nav-toggle:hover{border-color:var(--line-strong);background:var(--surface-2);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:.9375rem;
  font-weight:700;
  letter-spacing:.01em;
  line-height:1;
  transition:transform .2s ease,background .22s ease,box-shadow .26s ease,border-color .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-sm{min-height:40px;padding:0 18px;font-size:.875rem;}
.btn-primary{
  background:linear-gradient(150deg,var(--primary-strong),var(--primary));
  color:#04211C;
  box-shadow:0 0 0 1px rgba(52,227,196,.55),0 0 28px rgba(52,227,196,.32),0 10px 24px rgba(0,0,0,.35);
}
.btn-primary:hover{
  background:linear-gradient(150deg,#9BFFEC,#4DEDD1);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(125,255,232,.75),0 0 34px rgba(52,227,196,.5),0 14px 30px rgba(0,0,0,.4);
}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-ghost{
  background:transparent;
  border-color:rgba(52,227,196,.45);
  color:var(--primary-strong);
}
.btn-ghost:hover{
  background:rgba(52,227,196,.12);
  border-color:var(--primary);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0) scale(.99);}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.875rem;
  font-weight:600;
  color:var(--primary);
}
.link-arrow svg{width:16px;height:16px;transition:transform .22s ease;}
.link-arrow:hover{color:var(--primary-strong);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:.8125rem;
  color:var(--muted);
  padding:22px 0 0;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:var(--text);}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  padding-bottom:16px;
}
.page-hero__bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center right;
  opacity:.24;
  filter:saturate(120%);
  z-index:0;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(105deg,rgba(6,19,28,.96) 8%,rgba(6,19,28,.72) 52%,rgba(6,19,28,.46) 100%);
  z-index:0;
}
.page-hero__inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:48px;
  align-items:center;
  padding:34px 0 60px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(52,227,196,.35);
  background:rgba(52,227,196,.1);
  color:var(--primary-strong);
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.02em;
}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary);}
.hero-title{
  font-size:clamp(2.1rem,3.6vw,3.1rem);
  font-weight:800;
  line-height:1.16;
  margin:20px 0 16px;
}
.hero-title .accent{
  color:var(--primary-strong);
  display:block;
}
.hero-sub{
  font-size:1.0625rem;
  color:var(--muted);
  max-width:44ch;
  line-height:1.85;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  margin-top:26px;
  font-size:.8125rem;
  color:var(--muted);
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{
  width:6px;height:6px;border-radius:50%;
  background:var(--signal);display:inline-block;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.page-hero__media{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid rgba(52,227,196,.35);
  box-shadow:var(--shadow-float);
  aspect-ratio:16/11;
  background:var(--surface);
}
.page-hero__media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .7s ease;
}
.page-hero__media:hover img{transform:scale(1.04);}
.page-hero__media .media-tag{
  position:absolute;
  left:16px;bottom:16px;
  padding:7px 14px;
  border-radius:999px;
  font-size:.75rem;
  font-weight:600;
  color:var(--text);
  background:rgba(6,19,28,.72);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.page-hero__media .media-line{
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(6,19,28,.7) 100%);
  pointer-events:none;
}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:.8125rem;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--primary);
  text-transform:none;
}
.eyebrow::before{
  content:"";
  width:26px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.sec-title{
  font-size:clamp(1.6rem,2.6vw,2.2rem);
  font-weight:700;
  line-height:1.24;
  margin:14px 0 12px;
}
.sec-desc{color:var(--muted);font-size:1rem;max-width:64ch;}

/* ============ 概览数据 ============ */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
.stat-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:22px 22px 20px;
  box-shadow:var(--shadow-card);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.stat-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 24px 56px rgba(0,0,0,.4);
}
.stat-label{font-size:.8125rem;color:var(--muted);letter-spacing:.02em;}
.stat-value{
  font-family:var(--font-num);
  font-size:1.9rem;
  font-weight:700;
  line-height:1.2;
  margin-top:8px;
  color:var(--primary-strong);
  letter-spacing:.01em;
}
.stat-value small{font-size:.8125rem;font-family:var(--font-cn);color:var(--muted);margin-left:6px;font-weight:500;}
.stat-note{font-size:.8125rem;color:var(--muted);margin-top:6px;}

/* ============ 版本时间线 ============ */
.timeline{margin-top:8px;}
.tl-item{
  display:grid;
  grid-template-columns:110px 24px minmax(0,1fr);
  column-gap:18px;
}
.tl-date{
  font-family:var(--font-num);
  font-size:.875rem;
  color:var(--muted);
  padding-top:10px;
  letter-spacing:.02em;
  white-space:nowrap;
}
.tl-rail{position:relative;display:flex;justify-content:center;}
.tl-rail::before{
  content:"";
  position:absolute;
  top:18px;bottom:-10px;
  width:2px;
  background:linear-gradient(180deg,rgba(52,227,196,.5),rgba(143,174,180,.08));
}
.tl-item:last-child .tl-rail::before{display:none;}
.tl-dot{
  position:relative;
  z-index:1;
  width:12px;height:12px;
  margin-top:14px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 0 4px rgba(52,227,196,.14),0 0 16px rgba(52,227,196,.5);
}
.tl-item.is-new .tl-dot{background:var(--signal);box-shadow:0 0 0 4px rgba(255,209,102,.16),0 0 16px rgba(255,209,102,.5);}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:22px 24px;
  margin-bottom:22px;
  box-shadow:var(--shadow-card);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.tl-card:hover{
  transform:translateY(-3px);
  border-color:var(--line-strong);
  box-shadow:0 22px 52px rgba(0,0,0,.4);
}
.tl-card h3{font-size:1.1875rem;line-height:1.4;margin-bottom:8px;}
.tl-card p{color:var(--muted);font-size:.9375rem;line-height:1.85;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 11px;
  border-radius:999px;
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--primary-strong);
  background:rgba(52,227,196,.1);
  border:1px solid rgba(52,227,196,.28);
}
.tag--orange{color:var(--secondary);background:rgba(255,138,92,.1);border-color:rgba(255,138,92,.32);}
.tag--yellow{color:var(--signal);background:rgba(255,209,102,.1);border-color:rgba(255,209,102,.3);}
.tl-card .link-arrow{margin-top:14px;}

/* ============ 更新类型说明 ============ */
.type-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:24px;
  align-items:start;
}
.type-main{
  background:linear-gradient(160deg,var(--surface-2),var(--surface));
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:32px;
  box-shadow:var(--shadow-float);
}
.type-main h3{font-size:1.375rem;margin-bottom:14px;}
.type-main p{color:var(--muted);font-size:.9688rem;line-height:1.9;}
.type-main .type-points{margin-top:22px;display:grid;gap:14px;}
.type-points li{
  display:flex;
  gap:12px;
  font-size:.9375rem;
  color:var(--text);
}
.type-points li::before{
  content:"";
  flex:0 0 8px;
  height:8px;
  margin-top:9px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(52,227,196,.6);
}
.type-side{display:grid;gap:18px;}
.type-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:22px 24px;
  box-shadow:var(--shadow-card);
  transition:transform .26s ease,border-color .26s ease;
}
.type-card:hover{transform:translateY(-3px);border-color:var(--line-strong);}
.type-card h3{font-size:1.0625rem;margin-bottom:8px;}
.type-card p{color:var(--muted);font-size:.9063rem;line-height:1.85;}

/* ============ 核对清单 ============ */
.checklist{display:grid;gap:14px;max-width:900px;}
.check-item{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:18px;
  align-items:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid rgba(52,227,196,.5);
  border-radius:var(--radius-sm);
  padding:18px 22px;
  transition:border-color .24s ease,background .24s ease,transform .24s ease;
}
.check-item:hover{
  background:var(--surface-2);
  border-left-color:var(--primary);
  transform:translateX(3px);
}
.check-num{
  font-family:var(--font-num);
  font-size:1.0625rem;
  font-weight:700;
  color:var(--primary);
  line-height:1.6;
}
.check-item h3{font-size:1rem;margin-bottom:4px;}
.check-item p{color:var(--muted);font-size:.9063rem;line-height:1.8;}

/* ============ FAQ ============ */
.faq-wrap{
  display:grid;
  grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);
  gap:48px;
  align-items:start;
}
.faq-intro p{color:var(--muted);font-size:.9688rem;line-height:1.9;margin-top:14px;}
.faq-intro .link-arrow{margin-top:20px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:14px;
  min-height:56px;
  padding:16px 6px;
  background:transparent;
  border:0;
  color:var(--text);
  text-align:left;
  font-size:1rem;
  font-weight:600;
  transition:color .22s ease,background .22s ease;
}
.faq-q:hover{color:var(--primary-strong);background:rgba(52,227,196,.05);}
.faq-num{
  font-family:var(--font-num);
  font-size:.8125rem;
  color:var(--primary);
  letter-spacing:.06em;
}
.faq-sign{
  position:relative;
  width:16px;height:16px;
  flex:0 0 16px;
  transition:transform .3s ease;
}
.faq-sign::before,.faq-sign::after{
  content:"";
  position:absolute;
  background:var(--primary);
  border-radius:2px;
}
.faq-sign::before{left:0;right:0;top:7px;height:2px;}
.faq-sign::after{top:0;bottom:0;left:7px;width:2px;transition:opacity .3s ease;}
.faq-item.is-open .faq-sign{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .36s ease;
}
.faq-a p{
  padding:0 6px 20px 44px;
  color:var(--muted);
  font-size:.9375rem;
  line-height:1.9;
}

/* ============ 底部 CTA ============ */
.cta-band{padding:0 0 88px;}
.cta-inner{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:32px;
  align-items:center;
  padding:44px 46px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(600px 260px at 88% 0%,rgba(52,227,196,.18),transparent 66%),
    linear-gradient(150deg,var(--surface-2),var(--bg-1));
  box-shadow:var(--shadow-float);
}
.cta-inner h2{font-size:clamp(1.4rem,2.2vw,1.9rem);margin-bottom:10px;}
.cta-inner p{color:var(--muted);font-size:.9688rem;max-width:60ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,29,39,.7),rgba(6,19,28,.98));
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .8fr .9fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;justify-self:start;}
.footer-brand p{color:var(--muted);font-size:.875rem;line-height:1.85;max-width:30ch;}
.footer-col h4{
  font-size:.9375rem;
  font-weight:700;
  margin-bottom:16px;
  color:var(--text);
  letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{
  color:var(--muted);
  font-size:.875rem;
  line-height:1.7;
}
.footer-col ul a:hover{color:var(--primary);}
.form-tip{color:var(--muted);font-size:.8125rem;line-height:1.8;margin-bottom:14px;}
.subscribe-form{display:grid;gap:10px;}
.field-label{
  display:block;
  font-size:.8125rem;
  color:var(--muted);
  margin-bottom:6px;
}
.input{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:#0A1E27;
  color:var(--text);
  font-family:inherit;
  font-size:.9063rem;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.input::placeholder{color:var(--muted);opacity:.85;}
.input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(52,227,196,.16);
}
.input.is-error{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,122,107,.14);}
.input.is-success{border-color:var(--success);box-shadow:0 0 0 3px rgba(75,227,164,.14);}
.form-state{font-size:.8125rem;color:var(--muted);}
.form-state.is-error{color:var(--danger);}
.form-state.is-success{color:var(--success);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  padding-top:22px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:.8125rem;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{max-width:1080px;}
  .nav-side{gap:18px;}
  .footer-grid{gap:32px;}
}
@media (max-width:991px){
  .page-hero__inner{grid-template-columns:1fr;gap:32px;padding-bottom:48px;}
  .page-hero__media{max-width:560px;aspect-ratio:16/9;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .type-grid{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
  .cta-band{padding-bottom:64px;}
  .cta-inner{grid-template-columns:1fr;padding:34px 28px;}
}
@media (max-width:768px){
  .nav-wrap{
    grid-template-columns:44px minmax(0,1fr) 44px;
    gap:12px;
    min-height:64px;
    align-items:center;
  }
  .nav-toggle{display:inline-flex;justify-self:start;}
  .brand{justify-self:center;}
  .brand-text strong{font-size:.9688rem;}
  .brand-text span{display:none;}
  .nav-side{
    display:none;
    grid-column:1 / -1;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 0 14px;
    border-top:1px solid var(--line);
  }
  .nav-side--left,.nav-side--right{justify-self:stretch;}
  .site-header.is-open .nav-wrap{grid-template-columns:44px minmax(0,1fr) 44px;}
  .site-header.is-open .nav-side{display:flex;}
  .site-header.is-open{background:rgba(6,19,28,.97);border-bottom-color:var(--line);}
  .nav-link{
    padding:14px 4px;
    font-size:1rem;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--primary-strong);}
  .nav-cta{
    margin-top:14px;
    width:100%;
    min-height:48px;
    font-size:.9375rem;
  }
  body.nav-open{overflow:hidden;}
  .hero-title{font-size:clamp(1.85rem,6vw,2.4rem);}
  .hero-sub{font-size:1rem;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .tl-item{grid-template-columns:1fr;row-gap:0;}
  .tl-rail{display:none;}
  .tl-date{padding:0 0 8px;font-size:.8125rem;}
  .tl-card{padding:20px;margin-bottom:18px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:560px){
  .container{padding:0 16px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:12px;}
  .stat-card{padding:18px 16px;}
  .stat-value{font-size:1.5rem;}
  .hero-actions .btn{width:100%;}
  .faq-q{font-size:.9375rem;gap:10px;}
  .faq-a p{padding-left:0;}
  .type-main{padding:24px 20px;}
  .cta-inner{padding:28px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:480px){
  .hero-title{font-size:1.75rem;}
  .brand-mark{width:34px;height:34px;flex-basis:34px;font-size:.875rem;border-radius:10px;}
  .brand-text strong{font-size:.9063rem;white-space:normal;line-height:1.25;}
  .page-hero__media{aspect-ratio:4/3;}
  .sec-title{font-size:1.45rem;}
  .check-item{padding:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}