/* roulang page: index */
:root{
  --bg-0:#050A12;
  --bg-1:#0A1420;
  --bg-2:#0E1B2A;
  --primary:#2FD8BE;
  --primary-soft:rgba(47,216,190,.14);
  --accent:#F0B15C;
  --text-1:#E9F2FA;
  --text-2:#A6B7C9;
  --text-3:#6E8299;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 22px 46px -24px rgba(0,0,0,.65);
  --font-sans:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  background:var(--bg-0);
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
  padding:0;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(circle at 18% 12%, rgba(47,216,190,.10), transparent 42%),
    radial-gradient(circle at 84% 4%, rgba(240,177,92,.06), transparent 38%);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:var(--primary)}
button{font-family:inherit}
h1,h2,h3,p,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}
.container{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{padding:96px 0;border-top:1px solid var(--line)}
.section--alt{background:var(--bg-1)}
.eyebrow{
  font-size:13px;letter-spacing:.06em;color:var(--text-3);
  display:inline-flex;align-items:center;gap:10px;text-transform:none;
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--primary);display:inline-block}
h1{font-size:44px;line-height:1.18;font-weight:700;letter-spacing:-.01em;color:var(--text-1)}
h2{font-size:30px;line-height:1.3;font-weight:600;color:var(--text-1)}
h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--text-1)}
.lead{font-size:16px;color:var(--text-2)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.muted{color:var(--text-3);font-size:13px;letter-spacing:.06em}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg-0);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--text-1);font-weight:600;letter-spacing:.02em;font-size:16px}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border:1px solid var(--line-strong);border-radius:8px;
  display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);
  gap:2px;padding:5px;background:var(--bg-2);
}
.brand-mark i{background:var(--line-strong);border-radius:1px;display:block}
.brand-mark i.on{background:var(--primary)}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--text-2);
  padding:6px 0;transition:color .18s ease-out;
}
.nav-link:hover{color:var(--text-1)}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;
}
.nav-link.is-active{color:var(--text-1)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:20px}
.nav-ghost{font-size:14px;color:var(--text-2);transition:color .18s ease-out}
.nav-ghost:hover{color:var(--primary)}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:transparent;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:6px;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--text-1)}
.burger:hover{border-color:var(--line-strong)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  border:1px solid transparent;transition:all .18s ease-out;white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:#04140F;
  box-shadow:0 0 24px rgba(47,216,190,.32);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#04140F}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(47,216,190,.18)}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.btn-outline:hover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px);color:var(--text-1)}
.btn-outline:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.ghost-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14px;font-weight:600;transition:color .18s ease-out;
}
.ghost-link span{transition:transform .18s ease-out;display:inline-block}
.ghost-link:hover span{transform:translateX(4px)}
.btn:focus-visible,.nav-link:focus-visible,.ghost-link:focus-visible,.burger:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;
}

/* Hero */
.hero{padding:88px 0 84px;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 70%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 70%);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero h1{margin:18px 0 0}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:520px}
.hero-micro{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px}
.hero-micro span{font-size:13px;letter-spacing:.06em;color:var(--text-3);display:inline-flex;align-items:center;gap:8px}
.hero-micro span::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--primary);display:inline-block}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:34px;align-items:center}
.hero-visual{position:relative;padding-bottom:38px}
.hero-visual-main{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.hero-visual-main img{width:100%;height:360px;object-fit:cover}
.hero-visual-main::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 70% 20%,rgba(5,10,18,.25),rgba(5,10,18,.85) 78%);
}
.hero-visual-main .grid-overlay{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:40px 40px;
}
.hero-visual-card{
  position:absolute;right:-6px;bottom:0;width:44%;
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);background:var(--bg-2);
}
.hero-visual-card img{width:100%;height:150px;object-fit:cover}
.hero-visual-card .cap{
  padding:10px 14px;font-size:12px;letter-spacing:.06em;color:var(--text-3);
  border-top:1px solid var(--line);background:var(--bg-2);
}

/* 问题拆解 */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:44px}
.pain-card{
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;background:var(--bg-0);
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.pain-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.pain-card b{display:block;font-size:16px;font-weight:600;color:var(--text-1);line-height:1.5}
.pain-card p{margin-top:10px;font-size:13px;line-height:1.75;color:var(--text-3)}
.pain-num{
  font-family:var(--font-mono);font-size:12px;color:var(--primary);
  letter-spacing:.08em;margin-bottom:14px;display:block;
}

/* 方案卡 */
.solution-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px}
.solution-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;margin-top:48px}
.sol-card{
  grid-column:span 2;
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px 26px;position:relative;overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.sol-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
  transition:background .18s ease-out;
}
.sol-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.sol-card:hover::before{background:linear-gradient(90deg,transparent,rgba(47,216,190,.55),transparent)}
.sol-card.span-3{grid-column:span 3}
.sol-card:nth-child(4){margin-top:26px}
.sol-card:nth-child(5){margin-top:26px}
.sol-icon{
  width:40px;height:40px;border:1px solid var(--line-strong);border-radius:10px;
  display:flex;align-items:center;justify-content:center;color:var(--primary);
  background:var(--primary-soft);margin-bottom:20px;
}
.sol-card h3{font-size:19px}
.sol-card p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2)}
.sol-card .ghost-link{margin-top:20px}

/* 数据区 */
.stats-head{max-width:640px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}
.stat{
  border-left:1px solid var(--line);padding-left:22px;
}
.stat .num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:38px;line-height:1.1;font-weight:600;color:var(--primary);
  letter-spacing:-.02em;
}
.stat .num.accent{color:var(--accent)}
.stat .label{margin-top:12px;font-size:13px;letter-spacing:.06em;color:var(--text-3)}
.stats-foot{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  font-size:14px;color:var(--text-2);display:flex;flex-wrap:wrap;gap:12px;align-items:center;
}
.stats-foot::before{content:"";width:22px;height:1px;background:var(--primary);display:inline-block}

/* 资讯列表 */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.news-card{
  display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-2);overflow:hidden;position:relative;
  transition:border-color .18s ease-out,transform .18s ease-out;
}
.news-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
  z-index:2;transition:background .18s ease-out;
}
.news-card:hover{border-color:var(--line-strong);transform:translateY(-2px);color:var(--text-2)}
.news-card:hover::before{background:linear-gradient(90deg,transparent,rgba(47,216,190,.5),transparent)}
.news-thumb{position:relative;width:100%;aspect-ratio:16/10;background:var(--bg-2);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-thumb .ph{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  border-bottom:1px solid var(--line);color:var(--primary);opacity:.7;
}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary);font-size:12px;letter-spacing:.04em;
  align-self:flex-start;
}
.news-body h3{
  font-size:17px;line-height:1.45;margin-top:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:48px;
}
.news-body p{
  margin-top:10px;font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;gap:12px;
  font-size:12px;letter-spacing:.06em;color:var(--text-3);
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
}
.news-meta .arrow{margin-left:auto;color:var(--primary);font-family:var(--font-sans)}
.news-empty{
  margin-top:44px;border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  padding:64px 24px;text-align:center;background:var(--bg-0);
}
.news-empty .ico{
  width:56px;height:56px;margin:0 auto 20px;border:1px solid var(--line-strong);border-radius:14px;
  display:flex;align-items:center;justify-content:center;color:var(--primary);background:var(--bg-2);
}
.news-empty p{font-size:14px;color:var(--text-2);margin-bottom:18px}

/* 场景对比条 */
.scene-list{margin-top:44px;border-top:1px solid var(--line)}
.scene-row{
  display:grid;grid-template-columns:240px 1fr;gap:32px;align-items:start;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:background .18s ease-out;
}
.scene-row:hover{background:rgba(255,255,255,.02)}
.scene-row dt{font-size:15px;font-weight:600;color:var(--text-1);letter-spacing:.02em}
.scene-row dd{font-size:15px;line-height:1.8;color:var(--text-2)}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.faq-side p{margin-top:16px;font-size:15px;color:var(--text-3);max-width:280px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:transparent;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;min-height:52px;
  font-size:16px;font-weight:600;color:var(--text-1);line-height:1.5;
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--primary)}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.faq-sign{
  flex:0 0 22px;width:22px;height:22px;position:relative;color:var(--primary);
  transition:transform .2s ease-out;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:currentColor;border-radius:1px;
}
.faq-sign::before{left:0;right:0;top:10px;height:1.5px}
.faq-sign::after{top:0;bottom:0;left:10px;width:1.5px}
.faq-item.open .faq-sign{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .2s ease-out;
}
.faq-a p{padding:0 40px 22px 0;font-size:15px;line-height:1.85;color:var(--text-2)}

/* CTA */
.cta-band{
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:52px 48px;background:var(--bg-2);position:relative;overflow:hidden;
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 12% 10%,rgba(47,216,190,.10),transparent 46%);
}
.cta-band h2{position:relative;z-index:1}
.cta-band p{margin-top:16px;position:relative;z-index:1;font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.privacy-line{
  display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-3);letter-spacing:.02em;
}
.privacy-line svg{flex:0 0 12px}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:var(--bg-0);padding:72px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:4fr 2fr 3fr 3fr;gap:40px}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:260px}
.footer-contact{margin-top:20px;font-size:13px;color:var(--text-3);line-height:2}
.footer-contact b{color:var(--text-1);font-weight:600;font-family:var(--font-mono);letter-spacing:.02em}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);letter-spacing:.06em;margin:0 0 18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:14px;color:var(--text-2);transition:color .18s ease-out}
.footer-col ul li a:hover{color:var(--primary)}
.footer-col ul li span{font-size:14px;color:var(--text-3)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:24px 0;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--primary)}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(5,10,18,.78);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;z-index:91;
  background:var(--bg-1);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .22s ease-out;
  padding:26px 24px;display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:transparent;
  color:var(--text-1);cursor:pointer;font-size:18px;line-height:1;
}
.drawer-close:hover{border-color:var(--line-strong);color:var(--primary)}
.drawer-nav{margin-top:12px}
.drawer-nav a{
  display:flex;align-items:center;gap:10px;padding:16px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--text-2);
}
.drawer-nav a::before{content:"";width:6px;height:6px;border-radius:50%;background:transparent;display:inline-block}
.drawer-nav a.is-active{color:var(--text-1)}
.drawer-nav a.is-active::before{background:var(--primary)}
.drawer-nav a:hover{color:var(--primary)}
.drawer-foot{margin-top:auto;padding-top:24px}
.drawer-foot .btn{width:100%}

/* 弹层 */
.modal-mask{
  position:fixed;inset:0;background:rgba(5,10,18,.78);z-index:100;
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
}
.modal-mask.open{opacity:1;visibility:visible}
.modal-card{
  width:480px;max-width:100%;max-height:90vh;overflow:auto;
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;position:relative;
  box-shadow:0 30px 70px -30px rgba(0,0,0,.9);
  transform:translateY(10px);transition:transform .2s ease-out;
}
.modal-mask.open .modal-card{transform:translateY(0)}
.modal-card h3{font-size:21px}
.modal-card .modal-sub{margin-top:10px;font-size:14px;color:var(--text-3)}
.modal-close{
  position:absolute;top:18px;right:18px;width:36px;height:36px;border-radius:10px;
  border:1px solid var(--line);background:transparent;color:var(--text-2);cursor:pointer;font-size:16px;
}
.modal-close:hover{border-color:var(--line-strong);color:var(--primary)}
.form-field{margin-top:20px}
.form-field label{display:block;font-size:13px;letter-spacing:.06em;color:var(--text-3);margin-bottom:8px}
.form-field input[type="text"],
.form-field input[type="tel"],
.form-field textarea,
.form-field select{
  width:100%;background:rgba(10,20,32,.7);border:1px solid var(--line);
  border-radius:var(--radius-btn);color:var(--text-1);font-size:15px;
  padding:0 14px;height:46px;outline:none;transition:border-color .18s ease-out,box-shadow .18s ease-out;
  font-family:inherit;
}
.form-field textarea{height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{
  border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,216,190,.12);
}
.form-field.error input,.form-field.error textarea{border-color:var(--accent)}
.form-field .err-msg{display:none;margin-top:8px;font-size:14px;color:var(--accent)}
.form-field.error .err-msg{display:block}
.chip-group{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);font-size:14px;color:var(--text-2);cursor:pointer;
  transition:all .18s ease-out;background:transparent;
}
.chip:hover{border-color:var(--line-strong);color:var(--text-1)}
.chip.is-on{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}
.modal-submit{margin-top:26px}
.modal-submit .btn{width:100%}
.modal-privacy{margin-top:14px}

/* 响应式 */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual-main img{height:300px}
  h1{font-size:36px}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .solution-grid{grid-template-columns:repeat(4,1fr)}
  .sol-card{grid-column:span 2}
  .sol-card.span-3{grid-column:span 2}
  .sol-card:nth-child(4),.sol-card:nth-child(5){margin-top:0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:36px}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:40px 32px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}
}
@media (max-width:768px){
  .nav-links,.nav-actions .nav-ghost,.nav-actions .btn{display:none}
  .burger{display:flex}
  .nav-inner{height:60px}
  h1{font-size:30px}
  h2{font-size:23px}
  h3{font-size:18px}
  .section{padding:52px 0}
  .hero{padding:52px 0}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-visual-card{position:relative;right:0;width:100%;margin-top:16px}
  .hero-visual{padding-bottom:0}
  .pain-grid{grid-template-columns:1fr;gap:16px}
  .solution-grid{grid-template-columns:1fr}
  .sol-card,.sol-card.span-3{grid-column:span 1;padding:24px 22px}
  .stats-grid{grid-template-columns:1fr;gap:24px}
  .stat{border-left:1px solid var(--line)}
  .news-grid{grid-template-columns:1fr}
  .scene-row{grid-template-columns:1fr;gap:10px;padding:22px 0}
  .cta-band{padding:32px 22px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .modal-mask{padding:0;align-items:flex-end}
  .modal-card{width:100%;border-radius:14px 14px 0 0;max-height:92vh;padding:28px 22px}
  .faq-a p{padding-right:20px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .brand span.brand-name{font-size:15px}
  .stat .num{font-size:32px}
  .eyebrow{font-size:12px}
}

/* roulang page: article */
:root{
  --bg-0:#050A12;
  --bg-1:#0A1420;
  --bg-2:#0E1B2A;
  --primary:#2FD8BE;
  --primary-soft:rgba(47,216,190,.14);
  --accent:#F0B15C;
  --text-1:#E9F2FA;
  --text-2:#A6B7C9;
  --text-3:#6E8299;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --radius-card:14px;
  --radius-btn:10px;
  --shadow:0 22px 46px -24px rgba(0,0,0,.65);
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 10% -10%, rgba(47,216,190,.10), transparent 62%),
    radial-gradient(760px 520px at 96% 8%, rgba(47,216,190,.06), transparent 60%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-attachment:fixed,fixed,scroll,scroll;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
h1,h2,h3,h4{margin:0;color:var(--text-1);}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg-0);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1200px;margin:0 auto;height:72px;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;}
.brand-mark{
  width:27px;height:27px;flex:none;
  display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);
  gap:2px;padding:4px;
  border:1px solid var(--line-strong);border-radius:7px;
  background:var(--primary-soft);
}
.brand-mark i{display:block;border-radius:1px;background:rgba(255,255,255,.12);}
.brand-mark i.on{background:var(--primary);}
.brand-name{font-size:16px;font-weight:600;color:var(--text-1);letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;font-size:15px;letter-spacing:.02em;
  color:var(--text-2);padding:6px 0;transition:color .18s ease;
}
.nav-link:hover{color:var(--text-1);}
.nav-link.is-active{color:var(--text-1);}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:16px;}
.nav-ghost{font-size:14px;color:var(--text-2);}
.nav-ghost:hover{color:var(--primary);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,filter .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#04120F;box-shadow:0 0 24px rgba(47,216,190,.32);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#04120F;}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(47,216,190,.2);}
.btn-secondary{background:transparent;border-color:var(--line-strong);color:var(--text-1);}
.btn-secondary:hover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px);color:var(--text-1);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;
  background:none;border:none;padding:0;height:auto;
  color:var(--primary);font-size:15px;font-weight:600;cursor:pointer;
}
.btn-ghost .arrow{transition:transform .18s ease;}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.burger{
  display:none;width:44px;height:44px;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:6px;
  background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--text-1);border-radius:2px;}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:80;visibility:hidden;pointer-events:none;}
.drawer.open{visibility:visible;pointer-events:auto;}
.drawer-mask{position:absolute;inset:0;background:rgba(5,10,18,.78);opacity:0;transition:opacity .22s ease;}
.drawer.open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(320px,84vw);
  background:var(--bg-1);border-left:1px solid var(--line);
  padding:78px 24px 24px;transform:translateX(100%);transition:transform .24s ease;
  display:flex;flex-direction:column;gap:4px;
}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-panel a{
  display:flex;align-items:center;gap:10px;
  min-height:52px;font-size:16px;color:var(--text-1);
  border-bottom:1px solid var(--line);
}
.drawer-panel a:hover{color:var(--primary);}
.drawer-dot{width:6px;height:6px;border-radius:50%;background:transparent;flex:none;}
.drawer-panel a.is-active .drawer-dot{background:var(--primary);}
.drawer-close{
  position:absolute;top:18px;right:18px;width:40px;height:40px;
  background:transparent;border:1px solid var(--line);border-radius:10px;
  color:var(--text-1);font-size:20px;line-height:1;cursor:pointer;
}

/* ---------- 主体 ---------- */
.page-main{padding:36px 0 0;}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.05em;color:var(--text-3);
  white-space:nowrap;overflow:hidden;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--text-2);overflow:hidden;text-overflow:ellipsis;}
.article-head{padding:30px 0 46px;border-bottom:1px solid var(--line);}
.cat-chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--primary-soft);color:var(--primary);
  font-size:12px;letter-spacing:.06em;
}
.article-title{
  font-size:44px;line-height:1.18;font-weight:700;letter-spacing:-.01em;
  color:var(--text-1);margin:18px 0 0;max-width:920px;
  word-break:break-word;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  margin-top:20px;font-size:13px;color:var(--text-3);letter-spacing:.04em;
}
.meta-row .num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--text-2);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--primary);flex:none;}

.article-wrap{padding:52px 0 72px;}
.article-inner{max-width:760px;}
.lead{
  border-left:3px solid var(--primary);
  padding:2px 0 2px 18px;
  font-size:17px;line-height:1.9;color:var(--text-2);
  margin:0 0 44px;
}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--text-1);word-break:break-word;}
.article-body p{margin:0 0 1em;color:var(--text-1);}
.article-body h1,
.article-body h2{
  position:relative;
  font-size:26px;line-height:1.4;font-weight:600;
  color:var(--text-1);margin:44px 0 16px;padding-left:18px;
}
.article-body h1::before,
.article-body h2::before{
  content:"";position:absolute;left:0;top:.55em;
  width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.article-body h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--text-1);margin:32px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-1);margin:24px 0 10px;}
.article-body ul,.article-body ol{padding-left:20px;margin:0 0 1.1em;}
.article-body li{margin-bottom:8px;color:var(--text-2);}
.article-body li::marker{color:var(--primary);}
.article-body strong{color:var(--text-1);}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(47,216,190,.35);}
.article-body a:hover{border-bottom-color:var(--primary);}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--bg-2);border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{width:100%;height:auto;border-radius:12px;margin:26px auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;letter-spacing:.04em;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border-radius:12px;overflow:hidden;
}
.article-body th{
  background:var(--bg-2);color:var(--text-1);text-align:left;
  padding:12px 14px;border-bottom:1px solid var(--line-strong);font-weight:600;
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--text-2);}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}
.article-body code{
  font-family:var(--mono);font-size:14px;background:var(--bg-2);
  padding:2px 6px;border-radius:6px;color:var(--primary);
}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px solid var(--line);background:var(--bg-2);border-radius:var(--radius-card);
  padding:56px 28px;text-align:center;box-shadow:var(--shadow);
}
.empty-state .icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:14px;
  border:1px solid var(--line-strong);background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center;
}
.empty-state .icon svg{width:26px;height:26px;stroke:var(--primary);fill:none;stroke-width:1.5;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:24px;}

/* ---------- 标签 ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:52px;padding-top:28px;border-top:1px solid var(--line);
}
.tag-label{font-size:13px;color:var(--text-3);letter-spacing:.06em;margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:var(--bg-2);
  color:var(--text-2);font-size:13px;
}

/* ---------- 相关推荐 ---------- */
.related{padding:76px 0;border-top:1px solid var(--line);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{font-size:30px;line-height:1.3;font-weight:600;}
.section-head p{font-size:14px;color:var(--text-3);margin:8px 0 0;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  position:relative;display:block;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.post-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;z-index:2;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
  opacity:.45;transition:opacity .2s ease;
}
.post-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow);}
.post-card:hover::before{opacity:1;}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-1);}
.post-thumb img{width:100%;height:100%;object-fit:cover;}
.post-body{padding:18px 20px 20px;}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12px;color:var(--text-3);font-family:var(--mono);font-variant-numeric:tabular-nums;
}
.post-title{
  font-size:17px;line-height:1.45;font-weight:600;color:var(--text-1);margin:10px 0 0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-desc{
  font-size:14px;line-height:1.75;color:var(--text-2);margin:10px 0 0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.back-row{margin-top:44px;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- CTA ---------- */
.cta-band{border-top:1px solid var(--line);padding:64px 0;}
.cta-box{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-1);padding:34px 36px;box-shadow:var(--shadow);
}
.cta-box h3{font-size:22px;line-height:1.4;}
.cta-box p{font-size:14px;color:var(--text-2);margin:8px 0 0;}
.cta-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 48px;
}
.footer-brand .brand{display:inline-flex;align-items:center;gap:10px;}
.footer-brand p{margin:16px 0 0;font-size:14px;line-height:1.8;color:var(--text-2);max-width:280px;}
.footer-contact{
  margin-top:16px;font-size:13px;line-height:2;color:var(--text-3);
  font-family:var(--mono);font-variant-numeric:tabular-nums;
}
.footer-contact b{color:var(--primary);font-weight:600;}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-1);margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  padding:20px 0;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom .num{font-family:var(--mono);}

/* ---------- 弹层 ---------- */
.modal{position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center;padding:20px;}
.modal.open{display:flex;}
.modal-mask{position:absolute;inset:0;background:rgba(5,10,18,.78);}
.modal-panel{
  position:relative;width:480px;max-width:100%;max-height:90vh;overflow:auto;
  padding:28px;border-radius:14px;border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02)),var(--bg-1);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow);
  animation:pop .2s ease-out;
}
@keyframes pop{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.modal-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;
  background:transparent;border:1px solid var(--line);border-radius:10px;
  color:var(--text-2);font-size:18px;line-height:1;cursor:pointer;
}
.modal-close:hover{color:var(--primary);border-color:var(--primary);}
.modal-panel h3{font-size:20px;line-height:1.4;}
.modal-sub{font-size:13px;color:var(--text-3);margin:8px 0 22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.04em;}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;font-size:15px;font-family:inherit;
  color:var(--text-1);background:rgba(255,255,255,.03);
  border:1px solid var(--line);border-radius:10px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:88px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,216,190,.12);
}
.field .err{display:none;font-size:13px;color:var(--accent);margin-top:6px;}
.field.error input,.field.error select{border-color:var(--accent);}
.field.error .err{display:block;}
.privacy-note{
  display:flex;align-items:center;gap:8px;
  margin-top:14px;font-size:12px;color:var(--text-3);
}
.privacy-note svg{width:14px;height:14px;stroke:var(--text-3);fill:none;stroke-width:1.5;flex:none;}
.form-ok{display:none;font-size:14px;color:var(--primary);margin-top:14px;}
.form-ok.show{display:block;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links{gap:22px;}
  .nav-link{font-size:14px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-links,.nav-ghost{display:none;}
  .burger{display:flex;}
  .nav-inner{height:60px;}
  .article-title{font-size:34px;}
  .section-head h2{font-size:24px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .nav-inner{padding:0 20px;}
  .page-main{padding:26px 0 0;}
  .article-head{padding:22px 0 34px;}
  .article-title{font-size:30px;line-height:1.25;}
  .meta-row{gap:12px;font-size:12px;}
  .article-wrap{padding:36px 0 52px;}
  .lead{font-size:16px;margin-bottom:32px;}
  .article-body{font-size:17px;line-height:1.9;}
  .article-body h1,.article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .related{padding:56px 0;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{padding:48px 0;}
  .cta-box{padding:26px 22px;}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 36px;gap:28px;}
  .footer-bottom{font-size:12px;}
  .modal{padding:0;align-items:flex-end;}
  .modal-panel{width:100%;max-height:92vh;border-radius:14px 14px 0 0;animation:slideUp .24s ease-out;}
  @keyframes slideUp{from{transform:translateY(100%);}to{transform:translateY(0);}}
}
@media (max-width:520px){
  .article-title{font-size:26px;}
  .brand-name{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .cta-actions{width:100%;}
  .drawer-panel a{font-size:15px;}
}

/* roulang page: category1 */
:root{
  --bg-0:#050A12;
  --bg-1:#0A1420;
  --bg-2:#0E1B2A;
  --primary:#2FD8BE;
  --primary-soft:rgba(47,216,190,.14);
  --accent:#F0B15C;
  --text-1:#E9F2FA;
  --text-2:#A6B7C9;
  --text-3:#6E8299;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --radius-card:14px;
  --radius-btn:10px;
  --shadow:0 22px 46px -24px rgba(0,0,0,.65);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(760px 440px at 10% -8%, rgba(47,216,190,.10), transparent 70%),
    radial-gradient(620px 400px at 94% 4%, rgba(240,177,92,.055), transparent 72%),
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:#5BE7D3;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:600;letter-spacing:-.01em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,18,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(6px);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:32px;
}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--text-1);flex-shrink:0;}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:34px;height:34px;flex-shrink:0;
  display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);
  gap:2px;padding:5px;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line-strong);border-radius:9px;
}
.brand-mark i{background:rgba(255,255,255,.10);border-radius:1px;}
.brand-mark i.on{background:var(--primary);box-shadow:0 0 6px rgba(47,216,190,.55);}
.brand-name{font-size:16px;font-weight:600;letter-spacing:.02em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:8px;flex:1;}
.nav-link{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--text-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link:hover{color:var(--text-1);}
.nav-link.is-active{color:var(--text-1);}
.nav-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-14px;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:18px;margin-left:auto;}
.nav-ghost{font-size:14px;color:var(--text-2);white-space:nowrap;}
.nav-ghost:hover{color:var(--primary);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;
  border:1px solid transparent;transition:all .18s ease-out;white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(180deg,rgba(255,255,255,.18),rgba(255,255,255,0) 55%),var(--primary);
  color:#04211C;
  box-shadow:0 0 24px rgba(47,216,190,.32);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#04211C;}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(47,216,190,.22);}
.btn-ghostline{background:transparent;border:1px solid var(--line-strong);color:var(--text-1);}
.btn-ghostline:hover{border-color:var(--primary);background:var(--primary-soft);color:var(--text-1);transform:translateY(-1px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:6px;height:auto;padding:0;
  background:none;border:none;color:var(--primary);font-size:14px;font-weight:600;cursor:pointer;
}
.btn-ghost .arw{transition:transform .18s ease-out;}
.btn-ghost:hover .arw{transform:translateX(4px);}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--text-1);border-radius:2px;transition:transform .2s ease-out;}
.burger.is-open span:first-child{transform:translateY(3.25px) rotate(45deg);}
.burger.is-open span:last-child{transform:translateY(-3.25px) rotate(-45deg);}

/* drawer */
.drawer-scrim{
  position:fixed;inset:0;background:rgba(5,10,18,.7);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s;
}
.drawer-scrim.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;z-index:90;
  background:var(--bg-1);border-left:1px solid var(--line);
  padding:24px 22px;transform:translateX(100%);transition:transform .24s ease-out;
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-title{font-size:13px;letter-spacing:.06em;color:var(--text-3);margin-bottom:10px;}
.drawer a{
  display:flex;align-items:center;gap:10px;min-height:52px;padding:0 4px;
  color:var(--text-2);font-size:16px;border-bottom:1px solid var(--line);
}
.drawer a:hover{color:var(--text-1);}
.drawer a.is-active{color:var(--primary);}
.drawer a.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);}
.drawer-cta{margin-top:18px;display:grid;gap:10px;}
.drawer-cta .btn{width:100%;}

/* ---------- page hero ---------- */
.page-hero{padding:72px 0 88px;border-bottom:1px solid var(--line);position:relative;}
.crumb{font-size:13px;letter-spacing:.04em;color:var(--text-3);margin-bottom:30px;display:flex;gap:8px;align-items:center;flex-wrap:wrap;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:rgba(255,255,255,.2);}
.crumb .cur{color:var(--text-2);}
.hero-grid{display:grid;grid-template-columns:1fr 400px;gap:56px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;
  color:var(--primary);background:var(--primary-soft);border:1px solid rgba(47,216,190,.28);
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
}
.hero-grid h1{font-size:44px;line-height:1.18;font-weight:700;margin-bottom:18px;}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--text-3);margin-bottom:32px;}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--primary);}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-card);pointer-events:none;
  background:linear-gradient(180deg,rgba(5,10,18,0) 55%,rgba(5,10,18,.55) 100%);
}

/* ---------- sections ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line);}
.section-alt{background:var(--bg-1);}
.sec-head{max-width:720px;margin-bottom:52px;}
.sec-head .kicker{font-size:13px;letter-spacing:.06em;color:var(--text-3);display:block;margin-bottom:14px;}
.sec-head h2{font-size:30px;line-height:1.3;margin-bottom:14px;}
.sec-head p{color:var(--text-2);}
.sec-head.split{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;max-width:none;}

/* ---------- numbered list ---------- */
.num-list{border-top:1px solid var(--line);}
.num-row{
  display:grid;grid-template-columns:96px 1fr;gap:24px;
  padding:30px 20px 30px 8px;border-bottom:1px solid var(--line);
  transition:background .18s ease-out;
}
.num-row:hover{background:rgba(255,255,255,.028);}
.num{
  font-family:var(--mono);font-size:24px;line-height:1.4;color:var(--primary);
  font-variant-numeric:tabular-nums;padding-top:2px;
}
.num-row h3{font-size:20px;line-height:1.4;margin-bottom:8px;}
.num-row p{font-size:15px;color:var(--text-2);margin-bottom:6px;max-width:800px;}
.num-row p:last-child{margin-bottom:0;color:var(--text-3);font-size:14px;}

/* ---------- flow axis ---------- */
.flow{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:32px;padding-top:46px;}
.flow::before{
  content:"";position:absolute;top:5px;left:5px;right:5px;height:1px;background:var(--line-strong);
}
.flow-node{position:relative;padding-top:6px;}
.flow-node::before{
  content:"";position:absolute;top:-46px;left:0;width:10px;height:10px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 12px rgba(47,216,190,.55);
}
.flow-node .idx{font-family:var(--mono);font-size:13px;color:var(--text-3);letter-spacing:.06em;display:block;margin-bottom:8px;}
.flow-node h3{font-size:20px;margin-bottom:8px;}
.flow-node p{font-size:15px;color:var(--text-2);}

/* ---------- metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric{
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 22px;
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.metric::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
}
.metric b{
  display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:36px;line-height:1.1;color:var(--accent);margin-bottom:10px;font-weight:600;
}
.metric b span{font-size:16px;margin-left:4px;color:var(--text-2);font-family:inherit;}
.metric small{display:block;font-size:13px;color:var(--text-3);letter-spacing:.04em;}
.metric-note{margin-top:32px;padding-top:24px;border-top:1px solid var(--line);font-size:15px;color:var(--text-2);max-width:760px;}

/* ---------- deliverables two-column ---------- */
.deliver{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;margin-top:12px;}
.deliver-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 28px;box-shadow:var(--shadow);
}
.deliver-card h3{font-size:20px;margin-bottom:18px;}
.deliver-card ul{display:grid;gap:0;}
.deliver-card li{
  display:flex;gap:12px;align-items:flex-start;padding:14px 0;
  border-bottom:1px solid var(--line);font-size:15px;color:var(--text-2);
}
.deliver-card li:last-child{border-bottom:none;}
.deliver-card li::before{
  content:"";flex-shrink:0;width:6px;height:6px;border-radius:50%;background:var(--primary);margin-top:9px;
}
.note-block{
  border-left:3px solid var(--accent);background:rgba(240,177,92,.06);
  padding:18px 20px;border-radius:0 var(--radius-card) var(--radius-card) 0;font-size:14px;color:var(--text-2);
}
.note-block b{color:var(--accent);font-weight:600;}

/* ---------- CTA band ---------- */
.cta-band{padding:80px 0;}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;
  background:var(--bg-2);border:1px solid var(--line-strong);border-radius:var(--radius-card);
  padding:48px 44px;position:relative;overflow:hidden;box-shadow:var(--shadow);
}
.cta-inner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(520px 220px at 8% 0%, rgba(47,216,190,.10), transparent 70%);
}
.cta-copy{position:relative;max-width:620px;}
.cta-copy h2{font-size:26px;line-height:1.35;margin-bottom:12px;}
.cta-copy p{font-size:15px;color:var(--text-2);margin:0;}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-0);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;}
.footer-brand p{font-size:14px;color:var(--text-2);margin:16px 0 18px;max-width:280px;}
.footer-contact{font-size:14px;color:var(--text-2);line-height:2;}
.footer-contact b{color:var(--primary);font-family:var(--mono);}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text-1);}
.footer-col ul{display:grid;gap:12px;}
.footer-col li a,.footer-col li span{font-size:14px;color:var(--text-2);}
.footer-col li a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:13px;color:var(--text-3);
}

/* ---------- modal ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:120;background:rgba(5,10,18,.78);
  display:flex;align-items:center;justify-content:center;padding:24px;
}
.modal-mask[hidden]{display:none;}
.modal{
  width:100%;max-width:480px;border-radius:var(--radius-card);padding:30px 28px;
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02)),var(--bg-2);
  border:1px solid var(--line);backdrop-filter:blur(14px) saturate(120%);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.8);position:relative;max-height:88vh;overflow-y:auto;
}
.modal::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.modal h3{font-size:20px;margin-bottom:8px;}
.modal .modal-sub{font-size:14px;color:var(--text-3);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.02em;}
.field input,.field textarea{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text-1);transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,216,190,.12);
}
.field.has-error input,.field.has-error textarea{border-color:var(--accent);}
.field .err{display:none;font-size:14px;color:var(--accent);margin-top:6px;}
.field.has-error .err{display:block;}
.chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-2);
  font-size:14px;cursor:pointer;transition:all .18s ease-out;
}
.chip input{position:absolute;opacity:0;pointer-events:none;}
.chip:hover{border-color:var(--line-strong);color:var(--text-1);}
.chip.is-checked{border-color:var(--primary);background:var(--primary-soft);color:var(--primary);}
.privacy{
  display:flex;gap:8px;align-items:flex-start;font-size:12px;color:var(--text-3);
  margin-top:14px;line-height:1.7;
}
.privacy svg{flex-shrink:0;margin-top:2px;}
.modal-close{
  position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:9px;
  border:1px solid var(--line);background:transparent;color:var(--text-2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
}
.modal-close:hover{color:var(--text-1);border-color:var(--line-strong);}
.form-ok{display:none;font-size:14px;color:var(--primary);margin-top:12px;}
.form-ok.show{display:block;}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .nav-links{gap:24px;}
  .hero-grid{grid-template-columns:1fr 340px;gap:40px;}
}
@media (max-width:1024px){
  .section{padding:72px 0;}
  .page-hero{padding:56px 0 68px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-visual{max-width:560px;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .deliver{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-inner{padding:40px 34px;}
}
@media (max-width:900px){
  .nav-links{display:none;}
  .nav-ghost{display:none;}
  .burger{display:flex;}
  .nav-inner{height:60px;gap:16px;}
}
@media (max-width:768px){
  .hero-grid h1{font-size:30px;}
  .sec-head h2{font-size:23px;}
  .sec-head{margin-bottom:38px;}
  .num-row{grid-template-columns:56px 1fr;gap:16px;padding:24px 12px 24px 4px;}
  .num{font-size:20px;}
  .flow{grid-template-columns:1fr;gap:34px;padding-top:0;}
  .flow::before{display:none;}
  .flow-node{padding-top:0;padding-left:22px;}
  .flow-node::before{top:6px;left:0;}
  .cta-copy h2{font-size:22px;}
}
@media (max-width:640px){
  .container{padding:0 20px;}
  .nav-inner{padding:0 20px;}
  .section{padding:52px 0;}
  .page-hero{padding:40px 0 52px;}
  .hero-meta{gap:8px;font-size:13px;}
  .metrics{grid-template-columns:1fr;}
  .metric b{font-size:32px;}
  .btn{width:100%;}
  .hero-btns .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-inner{padding:30px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .site-footer{padding:52px 0 0;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal{max-width:100%;border-radius:14px 14px 0 0;padding:26px 20px 30px;}
}

/* roulang page: category3 */
:root{
  --bg-0:#050A12;
  --bg-1:#0A1420;
  --bg-2:#0E1B2A;
  --primary:#2FD8BE;
  --primary-soft:rgba(47,216,190,.14);
  --accent:#F0B15C;
  --text-1:#E9F2FA;
  --text-2:#A6B7C9;
  --text-3:#6E8299;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --radius-card:14px;
  --radius-btn:10px;
  --shadow:0 22px 46px -24px rgba(0,0,0,.65);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(620px 420px at 78% -6%,rgba(47,216,190,.10),transparent 62%),
    radial-gradient(520px 380px at 6% 26%,rgba(240,177,92,.06),transparent 66%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:var(--text-1);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--primary)}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,18,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;height:72px;
  display:flex;align-items:center;gap:32px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--text-1);flex:none}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:30px;height:30px;flex:none;
  display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);
  gap:2px;padding:4px;border:1px solid var(--line-strong);border-radius:8px;
  background:var(--bg-2);
}
.brand-mark i{background:rgba(255,255,255,.10);border-radius:1.5px;display:block}
.brand-mark i.on{background:var(--primary);box-shadow:0 0 8px rgba(47,216,190,.6)}
.brand-name{font-size:17px;font-weight:600;letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--text-2);
  padding:6px 0;
}
.nav-link::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--primary);opacity:0;
  transition:opacity .18s ease-out;
}
.nav-link:hover{color:var(--text-1)}
.nav-link.is-active{color:var(--text-1);font-weight:600}
.nav-link.is-active::before{opacity:1}
.nav-actions{display:flex;align-items:center;gap:18px;margin-left:auto}
.nav-ghost{font-size:14px;color:var(--text-2);letter-spacing:.02em}
.nav-ghost:hover{color:var(--primary)}
.burger{
  display:none;width:44px;height:44px;background:transparent;border:1px solid var(--line);
  border-radius:var(--radius-btn);align-items:center;justify-content:center;flex-direction:column;gap:6px;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--text-1);transition:transform .2s ease-out}
.burger[aria-expanded="true"] span:first-child{transform:translateY(3.75px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-3.75px) rotate(-45deg)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;
  transition:transform .18s ease-out,background .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,color .18s ease-out;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{
  background:var(--primary);color:#04140F;
  box-shadow:0 0 24px rgba(47,216,190,.32);
}
.btn-primary:hover{color:#04140F;filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(47,216,190,.18)}
.btn-ghost{
  background:transparent;border-color:var(--line-strong);color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--primary);background:var(--primary-soft);color:var(--text-1);transform:translateY(-1px)}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--primary);
  font-size:15px;font-weight:600;background:none;border:0;padding:0;height:auto;
}
.btn-link span{transition:transform .18s ease-out}
.btn-link:hover span{transform:translateX(4px)}

/* drawer */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;z-index:90;
  background:var(--bg-1);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .26s ease-out;
  padding:24px 22px;display:flex;flex-direction:column;gap:6px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:10px}
.drawer-head b{font-size:15px;color:var(--text-1)}
.drawer-close{width:40px;height:40px;background:transparent;border:1px solid var(--line);border-radius:10px;color:var(--text-1);font-size:18px;line-height:1}
.drawer a{
  padding:15px 4px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:10px;min-height:52px;
}
.drawer a.is-active{color:var(--text-1);font-weight:600}
.drawer a.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
.drawer .btn{width:100%;margin-top:18px}
.overlay{
  position:fixed;inset:0;background:rgba(5,10,18,.72);z-index:80;opacity:0;visibility:hidden;
  transition:opacity .24s ease-out,visibility .24s ease-out;
}
.overlay.is-open{opacity:1;visibility:visible}

/* page head */
.page-head{padding:88px 0 72px;border-bottom:1px solid var(--line);position:relative}
.page-head-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center}
.crumb{display:flex;gap:10px;align-items:center;font-size:13px;color:var(--text-3);letter-spacing:.06em;margin-bottom:20px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb i{font-style:normal;color:var(--text-3);opacity:.6}
.page-head h1{
  font-size:44px;line-height:1.18;font-weight:700;letter-spacing:-.01em;margin-bottom:18px;
}
.page-head .lead{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;letter-spacing:.02em;color:var(--primary);
  background:var(--primary-soft);border:1px solid rgba(47,216,190,.22);
}
.tag.amber{color:var(--accent);background:rgba(240,177,92,.10);border-color:rgba(240,177,92,.26)}
.page-head-figure{position:relative}
.page-head-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.page-head-figure::after{
  content:"";position:absolute;inset:0;border-radius:14px;pointer-events:none;
  background:linear-gradient(180deg,transparent 58%,rgba(5,10,18,.42));
}

/* section base */
.section{padding:96px 0;border-bottom:1px solid var(--line);position:relative}
.section.alt{background:var(--bg-1)}
.sec-head{margin-bottom:48px;max-width:720px}
.sec-kicker{font-size:13px;letter-spacing:.06em;color:var(--text-3);margin-bottom:12px}
.sec-head h2{font-size:30px;line-height:1.3}
.sec-head p{margin-top:14px;color:var(--text-2)}

/* timeline */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.timeline::before{
  content:"";position:absolute;top:9px;left:6%;right:6%;height:1px;background:var(--line-strong);
}
.tl-step{position:relative;padding-top:38px}
.tl-dot{
  position:absolute;top:0;left:0;width:20px;height:20px;border-radius:50%;
  background:var(--bg-0);border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
}
.tl-dot::after{content:"";width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px rgba(47,216,190,.55)}
.tl-step h3{font-size:18px;margin-bottom:8px}
.tl-step p{font-size:14px;color:var(--text-2);margin:0}
.tl-num{font-family:var(--mono);font-size:12px;color:var(--text-3);letter-spacing:.08em;display:block;margin-bottom:6px}

/* checklist */
.check-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:8px}
.check-card{
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;
  position:relative;transition:border-color .18s ease-out,transform .18s ease-out;
}
.check-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:14px 14px 0 0;
  background:linear-gradient(90deg,transparent,rgba(47,216,190,.55),transparent);
  opacity:.55;
}
.check-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.check-card h3{font-size:17px;margin-bottom:8px}
.check-card p{font-size:14px;color:var(--text-2);margin:0}
.check-card .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);display:inline-block;margin-right:8px;vertical-align:middle}

/* faq */
.faq-layout{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:56px;align-items:start}
.faq-side h2{font-size:30px;line-height:1.3;margin-bottom:14px}
.faq-side p{color:var(--text-2);font-size:15px}
.faq-side .side-card{
  margin-top:26px;padding:20px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-2);
}
.faq-side .side-card b{color:var(--text-1);font-family:var(--mono);font-size:20px;display:block;margin-bottom:4px}
.faq-side .side-card span{font-size:13px;color:var(--text-3)}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;padding:20px 0;
  min-height:52px;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex:none;width:22px;height:22px;position:relative;margin-top:2px;
  transition:transform .2s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:1px;
}
.faq-icon::before{left:0;right:0;top:10px;height:1.6px}
.faq-icon::after{top:0;bottom:0;left:10px;width:1.6px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .22s ease-out;
}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text-2);padding:0 0 20px;margin:0;max-width:640px}

/* contact card */
.support-wrap{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:40px;align-items:start}
.support-list{display:grid;gap:0;border-top:1px solid var(--line)}
.support-row{
  display:grid;grid-template-columns:160px minmax(0,1fr);gap:24px;padding:22px 6px;
  border-bottom:1px solid var(--line);transition:background .18s ease-out;
}
.support-row:hover{background:rgba(255,255,255,.02)}
.support-row dt{font-size:13px;letter-spacing:.06em;color:var(--text-3)}
.support-row dd{margin:0;color:var(--text-1);font-size:15px}
.contact-card{
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;
  position:relative;box-shadow:var(--shadow);
}
.contact-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.contact-card h3{font-size:20px;margin-bottom:10px}
.contact-card p{font-size:14px;color:var(--text-2)}
.contact-card .stat{display:flex;gap:14px;margin:20px 0 24px}
.contact-card .stat div{
  flex:1;background:var(--bg-2);border:1px solid var(--line);border-radius:10px;padding:14px;
}
.contact-card .stat b{display:block;font-family:var(--mono);font-size:20px;color:var(--accent);line-height:1.3}
.contact-card .stat span{font-size:12px;color:var(--text-3);letter-spacing:.04em}
.contact-card .btn{width:100%}
.contact-card .btn + .btn{margin-top:10px}

/* alert block */
.alert{
  border-left:3px solid var(--accent);background:rgba(240,177,92,.07);
  border-radius:0 10px 10px 0;padding:16px 20px;font-size:14px;color:var(--text-2);
  margin-top:32px;
}
.alert b{color:var(--accent)}

/* cta */
.cta-band{
  border:1px solid var(--line-strong);border-radius:var(--radius-card);
  background:var(--bg-2);padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,216,190,.16),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:26px;line-height:1.35;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);margin:0;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:none;position:relative;z-index:1}

/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--bg-0);padding:72px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-brand .brand{gap:10px;margin-bottom:14px}
.footer-brand .brand-name{font-size:16px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:280px}
.footer-contact{margin-top:18px;font-size:13px;color:var(--text-3);line-height:1.9}
.footer-contact b{color:var(--text-1);font-family:var(--mono)}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-1);margin-bottom:18px;font-weight:600}
.footer-col li{margin-bottom:12px;font-size:14px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--primary)}
.footer-col span{color:var(--text-3);font-size:13px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}

/* modal */
.modal-mask{
  position:fixed;inset:0;background:rgba(5,10,18,.78);z-index:120;
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s ease-out;
}
.modal-mask.is-open{opacity:1;visibility:visible}
.modal{
  width:100%;max-width:480px;border-radius:14px;padding:30px;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);position:relative;
  transform:translateY(12px);transition:transform .22s ease-out;
}
.modal-mask.is-open .modal{transform:translateY(0)}
.modal h3{font-size:21px;margin-bottom:8px}
.modal .hint{font-size:13px;color:var(--text-3);margin-bottom:22px}
.modal-close{
  position:absolute;top:14px;right:14px;width:38px;height:38px;border-radius:10px;
  background:transparent;border:1px solid var(--line);color:var(--text-2);font-size:18px;line-height:1;
}
.modal-close:hover{border-color:var(--primary);color:var(--primary)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px;letter-spacing:.04em}
.field input,.field textarea,.field select{
  width:100%;height:46px;padding:0 14px;border-radius:10px;
  background:rgba(5,10,18,.55);border:1px solid var(--line-strong);color:var(--text-1);
  font-size:15px;outline:none;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,216,190,.12);
}
.field.has-error input,.field.has-error textarea{border-color:var(--accent)}
.field .err{display:none;font-size:13px;color:var(--accent);margin-top:6px}
.field.has-error .err{display:block}
.pill-group{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  height:38px;padding:0 16px;border-radius:999px;border:1px solid var(--line-strong);
  background:transparent;color:var(--text-2);font-size:14px;transition:all .18s ease-out;
}
.pill:hover{border-color:var(--primary);color:var(--text-1)}
.pill.is-on{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}
.privacy{
  display:flex;align-items:flex-start;gap:8px;margin-top:14px;font-size:12px;color:var(--text-3);line-height:1.7;
}
.privacy svg{flex:none;margin-top:2px}
.form-ok{display:none;font-size:14px;color:var(--primary);margin-top:12px}
.form-ok.is-on{display:block}

/* responsive */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-ghost{display:none}
  .burger{display:flex}
  .nav-actions{margin-left:auto}
  .page-head{padding:72px 0 60px}
  .page-head-grid{grid-template-columns:1fr;gap:36px}
  .page-head h1{font-size:36px}
  .section{padding:72px 0}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .timeline::before{display:none}
  .faq-layout{grid-template-columns:1fr;gap:36px}
  .support-wrap{grid-template-columns:1fr;gap:32px}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px}
}
@media (max-width:768px){
  .nav-inner{height:60px;padding:0 20px;gap:16px}
  .container{padding:0 20px}
  .brand-name{font-size:15px}
  .page-head h1{font-size:30px}
  .sec-head h2,.faq-side h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:52px 0}
  .page-head{padding:52px 0 46px}
  .timeline{grid-template-columns:1fr;gap:26px}
  .check-grid{grid-template-columns:1fr}
  .support-row{grid-template-columns:1fr;gap:6px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .modal-mask{padding:0;align-items:flex-end}
  .modal{max-width:100%;border-radius:14px 14px 0 0;max-height:92vh;overflow:auto}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1;min-width:140px}
  .contact-card .stat{flex-direction:column;gap:10px}
}

/* roulang page: category2 */
:root{
  --bg-0:#050A12;
  --bg-1:#0A1420;
  --bg-2:#0E1B2A;
  --primary:#2FD8BE;
  --primary-soft:rgba(47,216,190,.14);
  --accent:#F0B15C;
  --text-1:#E9F2FA;
  --text-2:#A6B7C9;
  --text-3:#6E8299;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 22px 46px -24px rgba(0,0,0,.65);
  --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(620px 420px at 10% 4%, rgba(47,216,190,.085), transparent 68%),
    radial-gradient(720px 520px at 92% 12%, rgba(47,216,190,.055), transparent 72%);
  background-repeat:no-repeat;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(circle at 50% 8%, rgba(0,0,0,.85), transparent 72%);
  mask-image:radial-gradient(circle at 50% 8%, rgba(0,0,0,.85), transparent 72%);
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s ease-out,opacity .18s ease-out}
a:hover{color:#5BE7D2}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.3;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.container{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,18,.96);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;gap:32px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:600;font-size:17px;letter-spacing:.02em}
.brand:hover{color:var(--text-1)}
.brand-mark{
  display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);
  gap:2px;width:28px;height:28px;padding:3px;
  border:1px solid var(--line-strong);border-radius:8px;background:var(--bg-2);flex:none;
}
.brand-mark i{display:block;background:rgba(255,255,255,.10);border-radius:1px}
.brand-mark i.on{background:var(--primary);box-shadow:0 0 6px rgba(47,216,190,.55)}
.brand-name{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--text-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);opacity:0;transform:scaleX(.4);transition:opacity .18s ease-out,transform .18s ease-out;
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{opacity:.4;transform:scaleX(1)}
.nav-link.is-active{color:var(--text-1)}
.nav-link.is-active::after{opacity:1;transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:18px}
.nav-ghost{font-size:14px;color:var(--text-2)}
.nav-ghost:hover{color:var(--primary)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,filter .18s ease-out,color .18s ease-out;
}
.btn-primary{background:var(--primary);color:#04211C;box-shadow:0 0 24px rgba(47,216,190,.32)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#04211C}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(47,216,190,.20)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px);color:var(--text-1)}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.ghost-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--primary);letter-spacing:.02em;
}
.ghost-link .arw{transition:transform .18s ease-out}
.ghost-link:hover .arw{transform:translateX(4px)}

.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:9px;
  background:transparent;cursor:pointer;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--text-1);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
.burger.is-open span:first-child{transform:translateY(3.25px) rotate(45deg)}
.burger.is-open span:last-child{transform:translateY(-3.25px) rotate(-45deg)}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(5,10,18,.78);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s ease-out;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:80;
  background:var(--bg-1);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .26s ease-out;
  padding:22px 22px 32px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:9px;background:transparent;color:var(--text-1);font-size:20px;line-height:1;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  position:relative;display:block;padding:15px 0 15px 16px;
  color:var(--text-2);font-size:15px;border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--text-1)}
.drawer-nav a.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.drawer-cta{margin-top:auto}

/* ---------- page hero ---------- */
.page-hero{padding:88px 0 72px;border-bottom:1px solid var(--line);position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px;align-items:start}
.crumb{font-size:13px;letter-spacing:.06em;color:var(--text-3);display:flex;gap:8px;align-items:center;margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:var(--line-strong)}
.page-hero h1{font-size:44px;line-height:1.18;font-weight:700;letter-spacing:-.01em;margin-bottom:20px}
.hero-lead{font-size:17px;color:var(--text-2);max-width:640px}
.micro-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:26px;font-size:13px;color:var(--text-3);letter-spacing:.06em}
.micro-row i{width:4px;height:4px;border-radius:50%;background:var(--primary);display:block;flex:none}

.anchor-nav{
  position:sticky;top:100px;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  padding:8px 6px;box-shadow:var(--shadow);
}
.anchor-nav::before{
  content:"";position:absolute;top:0;left:14px;right:14px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
}
.anchor-title{font-size:12px;letter-spacing:.14em;color:var(--text-3);padding:14px 16px 8px}
.anchor-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 16px;border-radius:9px;font-size:14px;color:var(--text-2);
  transition:background-color .18s ease-out,color .18s ease-out;
}
.anchor-nav a span:last-child{font-family:var(--mono);font-size:12px;color:var(--text-3)}
.anchor-nav a:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.anchor-nav a.is-active{background:var(--primary-soft);color:var(--primary)}
.anchor-nav a.is-active span:last-child{color:var(--primary)}

/* ---------- sections ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line);position:relative;z-index:1}
.section-head{max-width:720px;margin-bottom:48px}
.eyebrow{font-size:13px;letter-spacing:.14em;color:var(--text-3);margin-bottom:14px}
.section-head h2{font-size:30px;line-height:1.3;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--text-2)}
.dot-h2{display:flex;align-items:center;gap:12px}
.dot-h2::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);flex:none}

/* asymmetric spec cards */
.spec-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:24px;align-items:start}
.spec-col{display:grid;gap:24px}
.value-card{
  position:relative;padding:28px;border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.065),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow);
}
.value-card::before,.panel-card::before{
  content:"";position:absolute;top:0;left:16px;right:16px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.34),transparent);
}
.value-label{font-size:13px;letter-spacing:.06em;color:var(--text-3);margin-bottom:12px}
.value-main{font-size:24px;color:var(--text-1);font-weight:600;line-height:1.4}
.value-note{font-size:13px;color:var(--text-3);margin-top:12px;line-height:1.8}
.value-num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--accent);font-size:34px;font-weight:600;line-height:1.2}

.panel-card{
  position:relative;padding:30px 32px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow);
}
.panel-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.panel-head h3{font-size:20px}
.panel-head span{font-size:12px;letter-spacing:.1em;color:var(--text-3);font-family:var(--mono)}
.param-row{display:grid;grid-template-columns:200px minmax(0,1fr);gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}
.param-row:last-child{border-bottom:0;padding-bottom:0}
.param-name{font-size:15px;color:var(--text-1);font-weight:600}
.param-val{font-size:15px;color:var(--text-2)}
.param-val b{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--primary);font-weight:600}

/* compare bars */
.bars{display:grid;gap:6px}
.bar-row{
  display:grid;grid-template-columns:220px minmax(0,1fr) 90px;gap:22px;align-items:center;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.bar-row:last-child{border-bottom:0}
.bar-name{font-size:15px;color:var(--text-1)}
.bar-name small{display:block;font-size:12px;color:var(--text-3);letter-spacing:.04em;font-weight:400;margin-top:4px}
.bar-track{height:8px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden;border:1px solid rgba(255,255,255,.05)}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,rgba(47,216,190,.42),var(--primary))}
.bar-fill.amber{background:linear-gradient(90deg,rgba(240,177,92,.35),var(--accent))}
.bar-num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:16px;color:var(--text-1);text-align:right}

/* spec table rows */
.spec-rows{border-top:1px solid var(--line)}
.spec-row{
  display:grid;grid-template-columns:230px minmax(0,1fr) 170px;gap:24px;align-items:baseline;
  padding:22px 14px;border-bottom:1px solid var(--line);
  transition:background-color .18s ease-out;
}
.spec-row:hover{background:rgba(255,255,255,.028)}
.spec-row .s-name{font-size:16px;color:var(--text-1);font-weight:600}
.spec-row .s-desc{font-size:14px;color:var(--text-2);line-height:1.8}
.spec-row .s-val{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:13px;color:var(--primary);text-align:right}

/* note + image */
.note-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center}
.note{
  border-left:3px solid var(--accent);background:var(--bg-1);
  padding:20px 24px;border-radius:0 12px 12px 0;font-size:14px;color:var(--text-2);line-height:1.9;
}
.note b{color:var(--accent);font-weight:600}
.shot{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);position:relative;aspect-ratio:16/10;background:var(--bg-2)}
.shot img{width:100%;height:100%;object-fit:cover}
.shot::after{content:"";position:absolute;inset:auto 0 0 0;height:38%;background:linear-gradient(180deg,transparent,rgba(5,10,18,.55))}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start}
.faq-intro h2{font-size:30px;line-height:1.3;margin-bottom:14px}
.faq-intro p{font-size:15px;color:var(--text-3)}
.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;justify-content:space-between;gap:20px;
  padding:20px 4px;min-height:52px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6;
}
.faq-q:hover{color:var(--primary)}
.faq-i{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:16px;line-height:1;transition:transform .2s ease-out,border-color .2s ease-out;
}
.faq-item.is-open .faq-i{transform:rotate(45deg);border-color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text-2);padding:0 4px 20px;max-width:720px}

/* CTA */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:38px 40px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(47,216,190,.10),rgba(255,255,255,.02) 55%,rgba(240,177,92,.06));
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:26px;line-height:1.35;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--bg-0);padding:72px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{color:var(--text-1)}
.footer-brand p{font-size:14px;color:var(--text-2);margin-top:18px;max-width:280px}
.footer-contact{margin-top:18px;font-size:13px;color:var(--text-3);line-height:2}
.footer-contact b{font-family:var(--mono);color:var(--accent);font-weight:600}
.footer-col h4{font-size:14px;color:var(--text-1);letter-spacing:.04em;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* modal */
.modal-mask{
  position:fixed;inset:0;z-index:90;background:rgba(5,10,18,.78);
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s ease-out;
}
.modal-mask.is-open{opacity:1;visibility:visible}
.modal-card{
  position:relative;width:480px;max-width:100%;border-radius:var(--radius);
  border:1px solid var(--line);padding:30px;
  background:linear-gradient(180deg,rgba(20,34,50,.96),rgba(10,20,32,.96));
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow);
  transform:translateY(10px);transition:transform .22s ease-out;
}
.modal-mask.is-open .modal-card{transform:translateY(0)}
.modal-card::before{
  content:"";position:absolute;top:0;left:20px;right:20px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
.modal-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:9px;
  border:1px solid var(--line);background:transparent;color:var(--text-2);cursor:pointer;font-size:18px;line-height:1;
}
.modal-close:hover{color:var(--text-1);border-color:var(--line-strong)}
.modal-card h3{font-size:21px;margin-bottom:8px}
.modal-sub{font-size:13px;color:var(--text-3);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-3);letter-spacing:.04em;margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text-1);font-size:15px;font-family:inherit;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,216,190,.12);
}
.field.has-error input{border-color:var(--accent);box-shadow:0 0 0 4px rgba(240,177,92,.12)}
.field .err{font-size:14px;color:var(--accent);margin-top:6px;display:none}
.field.has-error .err{display:block}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--text-2);font-size:14px;cursor:pointer;
  transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;
}
.chip:hover{border-color:var(--line-strong);color:var(--text-1)}
.chip.is-on{border-color:var(--primary);background:var(--primary-soft);color:var(--primary)}
.privacy{
  display:flex;align-items:flex-start;gap:8px;font-size:12px;color:var(--text-3);
  line-height:1.7;margin-top:14px;
}
.privacy svg{flex:none;margin-top:2px;stroke:var(--text-3)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-ghost{display:none}
  .burger{display:flex}
  .page-hero h1{font-size:34px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .anchor-nav{display:none}
  .spec-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .note-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .section{padding:72px 0}
  .page-hero{padding:64px 0 56px}
}
@media (max-width:768px){
  .section-head h2,.faq-intro h2{font-size:23px}
  .cta-band{padding:28px 24px}
  .cta-band h2{font-size:22px}
  .spec-row{grid-template-columns:1fr;gap:8px;padding:20px 6px}
  .spec-row .s-val{text-align:left}
  .bar-row{grid-template-columns:1fr;gap:10px;padding:18px 0}
  .bar-num{text-align:left}
  .param-row{grid-template-columns:1fr;gap:6px}
  .panel-card{padding:24px 20px}
  .value-card{padding:22px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .nav-inner{padding:0 20px;height:60px}
  .brand{font-size:15px}
  .brand-mark{width:24px;height:24px}
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:15px}
  .btn-sm{height:44px;padding:0 16px}
  .btn{width:100%}
  .nav-actions .btn{width:auto}
  .cta-actions{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .modal-mask{align-items:flex-end;padding:0}
  .modal-card{width:100%;border-radius:14px 14px 0 0;padding:26px 20px 30px}
}