/* roulang page: index */
:root{
  --bg:#F3F8FB;
  --bg-soft:#EAF3F8;
  --surface:#FFFFFF;
  --surface-2:#F7FBFD;
  --ink:#0E1F33;
  --ink-2:#4B6379;
  --ink-3:#8397A8;
  --line:#DCE8F0;
  --line-strong:#C2D6E3;
  --brand:#0FB79C;
  --brand-bright:#1BCDBC;
  --brand-deep:#0A8E7C;
  --brand-tint:rgba(15,183,156,.10);
  --accent:#FF7A45;
  --accent-tint:rgba(255,122,69,.12);
  --blue:#2FA8FF;
  --dark:#0B1B2C;
  --dark-2:#122A42;
  --r-lg:22px;
  --r:16px;
  --r-sm:10px;
  --sh-1:0 1px 2px rgba(14,31,51,.06);
  --sh-2:0 12px 32px -14px rgba(14,31,51,.20);
  --sh-3:0 26px 64px -30px rgba(14,31,51,.32);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-deep);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;}
a:hover{color:var(--brand);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:.01em;}
button{font-family:inherit;cursor:pointer;}
.grid-container{max-width:var(--maxw);margin:0 auto;padding-left:32px;padding-right:32px;}
.button{border-radius:var(--r-sm);}
.button:focus{outline:2px solid var(--brand);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.logo{display:inline-flex;align-items:center;gap:11px;font-weight:700;font-size:19px;color:var(--ink);letter-spacing:.01em;}
.logo:hover{color:var(--ink);}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(140deg,var(--brand-bright),var(--blue));display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:3px;padding:7px;box-shadow:0 6px 16px -8px rgba(15,183,156,.8);}
.logo-mark i{display:block;border-radius:50%;background:rgba(255,255,255,.92);}
.logo-mark i:nth-child(5){background:var(--accent);}
.nav-desktop{display:flex;align-items:center;gap:6px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 16px;border-radius:10px;font-size:15px;color:var(--ink-2);font-weight:500;}
.nav-link::after{content:"";position:absolute;left:16px;right:16px;bottom:8px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--blue));transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;}
.nav-link:hover{color:var(--ink);background:var(--surface-2);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-deep);background:var(--brand-tint);}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;transition:all .18s ease-out;min-height:44px;}
.btn-primary{background:linear-gradient(120deg,var(--brand-bright),var(--brand-deep));color:#052B26;box-shadow:0 10px 24px -12px rgba(15,183,156,.85);}
.btn-primary:hover{color:#052B26;transform:translateY(-2px);box-shadow:0 16px 30px -12px rgba(15,183,156,.95);filter:brightness(1.06);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink);}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--brand);color:var(--ink);transform:translateY(-2px);}
.btn-pill{border-radius:999px;padding:13px 24px;}
.btn-block{width:100%;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-deep);}
.text-link i{transition:transform .18s ease-out;}
.text-link:hover i{transform:translateX(4px);}
.nav-toggle{display:none;width:46px;height:46px;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);font-size:18px;align-items:center;justify-content:center;}
.nav-toggle:hover{background:var(--surface-2);}

/* mobile drawer */
.mobile-drawer{position:fixed;inset:0;z-index:80;visibility:hidden;opacity:0;transition:opacity .2s ease-out,visibility .2s;}
body.drawer-open .mobile-drawer{visibility:visible;opacity:1;}
.drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(86vw,360px);background:var(--surface);border-left:1px solid var(--line);box-shadow:var(--sh-3);padding:22px 22px 28px;display:flex;flex-direction:column;gap:8px;transform:translateX(100%);transition:transform .24s ease-out;overflow-y:auto;}
body.drawer-open .drawer-panel{transform:translateX(0);}
.drawer-scrim{position:absolute;inset:0;background:rgba(11,27,44,.45);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface-2);font-size:18px;color:var(--ink);}
.drawer-nav a{display:block;padding:14px 12px;border-radius:12px;font-size:17px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--brand-tint);color:var(--brand-deep);}
.drawer-foot{margin-top:auto;padding-top:18px;display:grid;gap:12px;}
.drawer-note{font-size:13px;color:var(--ink-3);line-height:1.7;}

/* ---------- hero ---------- */
.hero{position:relative;padding:72px 0 84px;overflow:hidden;background:
  radial-gradient(900px 420px at 88% -10%,rgba(47,168,255,.16),transparent 68%),
  radial-gradient(700px 400px at 6% 0%,rgba(15,183,156,.14),transparent 66%),
  var(--bg);}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(14,31,51,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(14,31,51,.045) 1px,transparent 1px);background-size:46px 46px;mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 82%);pointer-events:none;}
.hero-inner{position:relative;z-index:1;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:13px;letter-spacing:.06em;color:var(--brand-deep);font-weight:600;box-shadow:var(--sh-1);}
.eyebrow i{color:var(--accent);}
.hero h1{margin:20px 0 18px;font-size:44px;line-height:1.24;font-weight:700;letter-spacing:.005em;}
.hero h1 .hl{color:var(--brand-deep);}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px;}
.hero-note{font-size:13px;color:var(--ink-3);letter-spacing:.03em;line-height:1.8;}
.hero-note i{color:var(--brand);margin-right:6px;}
.hero-visual{position:relative;}
.hero-figure{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-3);background:var(--dark);}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,27,44,.06),rgba(11,27,44,.42));pointer-events:none;}
.data-card{position:absolute;left:-24px;bottom:-28px;width:min(320px,86%);background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh-3);padding:18px;display:grid;gap:12px;}
.data-card .dc-top{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);letter-spacing:.05em;}
.data-card .dc-top i{color:var(--brand);}
.data-row{display:flex;align-items:baseline;justify-content:space-between;gap:10px;padding-top:10px;border-top:1px solid var(--line);}
.data-row:first-of-type{border-top:0;padding-top:0;}
.data-num{font-size:24px;font-weight:700;color:var(--brand-deep);letter-spacing:.01em;}
.data-num.accent{color:var(--accent);}
.data-label{font-size:13px;color:var(--ink-2);text-align:right;}

/* ---------- trust bar ---------- */
.trust-bar{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{padding:30px 24px;border-left:1px solid var(--line);}
.trust-item:first-child{border-left:0;}
.trust-item .t-num{font-size:28px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.trust-item .t-num span{font-size:15px;font-weight:600;color:var(--brand-deep);margin-left:4px;}
.trust-item .t-txt{font-size:13px;color:var(--ink-3);line-height:1.7;margin-top:4px;}

/* ---------- section base ---------- */
section{position:relative;}
.section{padding:88px 0;}
.section.alt{background:var(--surface);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px;}
.section-head .sh-left{max-width:640px;}
.section-tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.1em;color:var(--ink-3);font-weight:600;margin-bottom:12px;}
.section-tag b{font-size:13px;color:var(--brand-deep);letter-spacing:.08em;}
.section-tag::after{content:"";width:36px;height:1px;background:linear-gradient(90deg,var(--line-strong),transparent);}
.section-head h2{font-size:32px;line-height:1.3;}
.section-head p{margin:12px 0 0;color:var(--ink-2);font-size:16px;}

/* ---------- pain ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.pain-card{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r);padding:24px 22px;transition:border-color .18s ease-out,transform .18s ease-out;}
.pain-card:hover{border-color:var(--brand);transform:translateY(-3px);}
.pain-icon{width:44px;height:44px;border-radius:12px;background:var(--surface);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--brand-deep);font-size:17px;margin-bottom:16px;}
.pain-card h3{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:8px;}
.pain-card p{font-size:13.5px;color:var(--ink-3);margin:0;line-height:1.7;}

/* ---------- solutions ---------- */
.sol-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;height:100%;display:flex;flex-direction:column;}
.sol-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.sol-card .sol-media{border-radius:12px;overflow:hidden;border:1px solid var(--line);margin-bottom:20px;}
.sol-card .sol-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease-out;}
.sol-card:hover .sol-media img{transform:scale(1.03);}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.06em;font-weight:600;padding:5px 10px;border-radius:8px;background:var(--brand-tint);color:var(--brand-deep);}
.badge.warm{background:var(--accent-tint);color:#C4491B;}
.sol-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.sol-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.sol-card p{color:var(--ink-2);font-size:15px;margin-bottom:14px;}
.sol-list{display:grid;gap:10px;margin:0 0 20px;}
.sol-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.sol-list li i{color:var(--brand);margin-top:5px;font-size:12px;}
.sol-card .sol-foot{margin-top:auto;padding-top:6px;}

/* ---------- stats ---------- */
.stats{background:linear-gradient(160deg,var(--dark),var(--dark-2));color:#DDEAF5;padding:76px 0;position:relative;overflow:hidden;}
.stats::before{content:"";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:44px 44px;pointer-events:none;}
.stats .grid-container{position:relative;z-index:1;}
.stats-head{max-width:620px;margin-bottom:44px;}
.stats-head h2{color:#FFFFFF;font-size:32px;}
.stats-head p{color:#9FB6C9;margin:12px 0 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:8px 24px;border-left:1px solid rgba(255,255,255,.14);}
.stat:first-child{border-left:0;padding-left:0;}
.stat .s-num{font-size:46px;font-weight:700;line-height:1.1;color:#3EE0C4;letter-spacing:.01em;}
.stat .s-num.warm{color:#FF9A6E;}
.stat .s-unit{font-size:15px;color:#9FB6C9;margin-left:6px;font-weight:600;}
.stat .s-txt{font-size:13px;color:#8AA3B8;margin-top:8px;line-height:1.7;}

/* ---------- news ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.filter-chip{font-size:13px;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);}
.filter-chip.is-on{background:var(--brand-tint);border-color:transparent;color:var(--brand-deep);font-weight:600;}
.news-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;height:100%;box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.news-thumb{display:block;overflow:hidden;border-bottom:1px solid var(--line);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:18px;font-weight:600;line-height:1.5;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a{color:var(--ink);}
.news-body h3 a:hover{color:var(--brand-deep);}
.news-body p{font-size:14.5px;color:var(--ink-2);margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);letter-spacing:.03em;}
.news-meta .nm-left{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.news-empty{text-align:center;padding:56px 24px;border:1px dashed var(--line-strong);border-radius:var(--r);background:var(--surface-2);}
.news-empty i{font-size:26px;color:var(--ink-3);}
.news-empty p{color:var(--ink-3);margin:14px 0 18px;}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;align-items:start;}
details.faq{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:4px 20px;box-shadow:var(--sh-1);transition:border-color .18s ease-out;}
details.faq[open]{border-color:var(--brand);background:var(--surface-2);}
details.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:17px;font-weight:600;color:var(--ink);min-height:44px;}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary .faq-ico{width:26px;height:26px;flex:0 0 26px;border-radius:8px;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;color:var(--brand-deep);font-size:12px;transition:transform .18s ease-out;}
details.faq[open] summary .faq-ico{transform:rotate(180deg);background:var(--brand-tint);border-color:transparent;}
details.faq .faq-body{padding:0 0 20px 14px;border-left:2px solid var(--brand);margin-left:2px;}
details.faq .faq-body p{font-size:15px;color:var(--ink-2);line-height:1.85;margin:0;}

/* ---------- cta band ---------- */
.cta-band{background:linear-gradient(120deg,#0FB79C,#1FA9E0);border-radius:var(--r-lg);padding:44px 46px;display:flex;align-items:center;justify-content:space-between;gap:32px;box-shadow:var(--sh-2);}
.cta-band h2{color:#04211D;font-size:28px;line-height:1.35;margin-bottom:8px;}
.cta-band p{color:rgba(4,33,29,.78);margin:0;font-size:15.5px;max-width:620px;}
.cta-band .btn{background:var(--surface);color:var(--ink);border-color:transparent;box-shadow:0 12px 28px -14px rgba(4,33,29,.6);white-space:nowrap;}
.cta-band .btn:hover{background:#04211D;color:#EAFFF9;transform:translateY(-2px);}
.cta-privacy{font-size:13px;color:rgba(4,33,29,.7);margin-top:26px;text-align:center;}
.cta-privacy a{color:#04211D;text-decoration:underline;}

/* ---------- form / reveal ---------- */
.reveal-overlay{background:rgba(11,27,44,.62);}
.reveal{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-3);padding:30px;}
.reveal .modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:20px;}
.reveal h3{font-size:22px;}
.reveal .modal-sub{font-size:14px;color:var(--ink-3);margin:8px 0 0;}
.reveal .close-button{color:var(--ink-3);font-size:22px;line-height:1;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:8px;}
.field label .req{color:var(--accent);margin-left:4px;}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface-2);color:var(--ink);font-size:15px;font-family:inherit;transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3);}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,183,156,.18);}
.field textarea{min-height:104px;resize:vertical;}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-2);line-height:1.7;margin:6px 0 18px;}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand);}
.check-row a{color:var(--brand-deep);text-decoration:underline;}
.form-note{font-size:13px;color:var(--ink-3);line-height:1.75;margin:16px 0 0;}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#A9C0D3;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-brand .logo{color:#FFFFFF;}
.footer-brand .logo:hover{color:#FFFFFF;}
.footer-brand p{font-size:14px;color:#8CA5B9;line-height:1.8;margin:16px 0 0;max-width:340px;}
.footer-col h4{color:#FFFFFF;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{color:#A9C0D3;font-size:14px;}
.footer-col a:hover{color:#3EE0C4;}
.footer-col li span{font-size:14px;color:#8CA5B9;display:block;line-height:1.7;}
.footer-bottom{padding:22px 0 30px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;color:#748DA2;}
.footer-bottom a{color:#A9C0D3;}
.footer-bottom a:hover{color:#3EE0C4;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-header{display:none;}
  .hero{padding:52px 0 68px;}
  .hero h1{font-size:34px;}
  .hero-visual{margin-top:44px;}
  .data-card{position:static;width:100%;margin-top:16px;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .trust-item:nth-child(3){border-left:0;}
  .trust-item{border-top:1px solid var(--line);}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-top:0;}
  .pain-grid{grid-template-columns:repeat(2,1fr);}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px;}
}
@media (max-width:639px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .section{padding:56px 0;}
  .hero h1{font-size:29px;}
  .hero-sub{font-size:16px;}
  .hero-cta .btn{width:100%;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .section-head h2{font-size:25px;}
  .pain-grid{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
  .trust-item{border-left:0;padding:22px 18px;}
  .trust-item:nth-child(2){border-top:1px solid var(--line);}
  .stats-head h2{font-size:25px;}
  .stats-grid{grid-template-columns:1fr;gap:26px;}
  .stat{border-left:0;padding:0;}
  .stat .s-num{font-size:38px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .reveal{padding:22px;}
  .reveal-overlay .reveal{top:auto;bottom:0;left:0;right:0;transform:none;width:100%;max-width:100%;margin:0;border-radius:20px 20px 0 0;max-height:88vh;overflow-y:auto;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A12;
  --bg-1:#0A101C;
  --bg-2:#101A2B;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#17E1C4;
  --brand-2:#2FA8FF;
  --accent:#FF7A45;
  --text:#E9F0F8;
  --text-2:#93A3B8;
  --text-3:#5F6E82;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(0,0,0,.45);
  --shadow-2:0 16px 40px -16px rgba(0,0,0,.7);
  --edge:0 0 0 1px rgba(23,225,196,.14);
  --ease:180ms ease-out;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:visited{color:var(--brand);}
a:hover{color:#4df0d8;}
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:.01em;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.grid-container{
  max-width:1200px;
  padding-left:32px;
  padding-right:32px;
  margin-left:auto;
  margin-right:auto;
}
.grid-container.full{padding-left:0;padding-right:0;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,16,28,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.site-header.scrolled{
  background:rgba(10,16,28,.96);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px -22px rgba(0,0,0,.95);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-size:19px;
  font-weight:700;
  letter-spacing:.02em;
  flex:0 0 auto;
}
.logo:visited,.logo:hover{color:var(--text);}
.logo-mark{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:2px;
  width:20px;
  height:20px;
}
.logo-mark i{
  display:block;
  border-radius:2px;
  background:var(--brand);
  opacity:.9;
}
.logo-mark i:nth-child(5){background:var(--accent);}
.nav-desktop{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:20px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
  border-radius:8px;
  transition:color var(--ease),background var(--ease);
}
.nav-link:visited{color:var(--text-2);}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--ease);
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-toggle{
  display:none;
  width:46px;
  height:46px;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--text);
  font-size:18px;
  cursor:pointer;
  transition:background var(--ease),border-color var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.06);border-color:rgba(23,225,196,.4);}

/* ---------- Mobile drawer ---------- */
.mobile-nav{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(6,10,18,.94);
  backdrop-filter:blur(8px);
  display:flex;
  flex-direction:column;
  padding:22px 20px 28px;
  transform:translateX(100%);
  opacity:0;
  visibility:hidden;
  transition:transform 240ms ease-out,opacity 240ms ease-out,visibility 240ms;
}
.mobile-nav.open{transform:translateX(0);opacity:1;visibility:visible;}
.mobile-nav-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
}
.mobile-nav-close{
  width:46px;height:46px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--text);
  font-size:18px;
  cursor:pointer;
}
.mobile-nav-links{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:22px 0;
}
.mobile-nav-links a{
  display:block;
  padding:15px 4px;
  font-size:19px;
  font-weight:600;
  color:var(--text);
  border-bottom:1px solid var(--line);
}
.mobile-nav-links a.active{color:var(--brand);}
.mobile-nav-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;}
.mobile-nav-foot .btn{width:100%;}
.mobile-nav-foot small{color:var(--text-3);font-size:13px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  text-align:center;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),filter var(--ease);
}
.btn:visited{color:inherit;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121A;
  box-shadow:0 0 0 1px rgba(23,225,196,.35),0 8px 24px -8px rgba(23,225,196,.6);
}
.btn-primary:visited{color:#04121A;}
.btn-primary:hover{
  color:#04121A;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(23,225,196,.5),0 14px 34px -10px rgba(23,225,196,.72);
}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:visited{color:var(--text);}
.btn-ghost:hover{
  background:rgba(255,255,255,.06);
  border-color:rgba(23,225,196,.4);
  color:var(--text);
  transform:translateY(-2px);
}
.btn-pill{border-radius:999px;}
.btn-header{padding:11px 20px;font-size:14px;}
.btn-sm{padding:10px 18px;font-size:14px;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-weight:600;
  font-size:15px;
}
.link-arrow i{transition:transform var(--ease);}
.link-arrow:hover{color:#4df0d8;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- Badges & tags ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  border-radius:6px;
  background:rgba(23,225,196,.12);
  color:var(--brand);
}
.badge-accent{
  background:rgba(255,122,69,.14);
  color:var(--accent);
}
.badge-mute{
  background:rgba(255,255,255,.06);
  color:var(--text-2);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- Section basics ---------- */
.section{
  padding:84px 0;
  border-top:1px solid var(--line);
}
.section:first-of-type{border-top:0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:38px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-2);
  margin-bottom:12px;
}
.eyebrow b{
  font-weight:700;
  color:var(--brand);
  font-size:13px;
  letter-spacing:.1em;
}
.eyebrow::after{
  content:"";
  width:46px;
  height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.35),rgba(255,255,255,0));
}
.section-title{font-size:32px;line-height:1.28;max-width:760px;}
.section-desc{color:var(--text-2);font-size:16px;max-width:720px;margin:12px 0 0;}

/* ---------- Category hero ---------- */
.category-hero{
  position:relative;
  overflow:hidden;
  padding:60px 0 66px;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.category-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.88) 0%,rgba(10,16,28,.95) 62%,var(--bg-1) 100%);
}
.category-hero::after{
  content:"";
  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:44px 44px;
  opacity:.5;
  pointer-events:none;
}
.category-hero .grid-container{position:relative;z-index:2;}
.crumb{
  margin-bottom:26px;
  font-size:13px;
  color:var(--text-2);
  letter-spacing:.04em;
}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:var(--text-3);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--text);}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(23,225,196,.32);
  background:rgba(23,225,196,.08);
  color:var(--brand);
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:20px;
}
.category-hero h1{
  font-size:44px;
  line-height:1.24;
  max-width:840px;
}
.hero-lead{
  margin-top:18px;
  max-width:740px;
  color:var(--text-2);
  font-size:17px;
  line-height:1.8;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:42px;
  border-top:1px solid var(--line);
  padding-top:26px;
}
.hero-stat{
  flex:1 1 180px;
  padding-right:26px;
  margin-right:26px;
  border-right:1px solid var(--line);
}
.hero-stat:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-stat b{
  display:block;
  font-size:28px;
  font-weight:700;
  color:var(--brand);
  line-height:1.2;
  letter-spacing:.02em;
}
.hero-stat.is-accent b{color:var(--accent);}
.hero-stat span{
  display:block;
  margin-top:6px;
  font-size:13px;
  color:var(--text-2);
  line-height:1.6;
}

/* ---------- Intro ---------- */
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start;}
.intro-copy p{color:var(--text-2);font-size:16.5px;line-height:1.85;}
.intro-copy p:last-child{margin-bottom:0;}
.intro-copy strong{color:var(--text);font-weight:600;}
.intro-aside{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow-1);
  position:relative;
  overflow:hidden;
}
.intro-aside::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.5),rgba(255,255,255,0));
}
.intro-aside h3{font-size:19px;margin-bottom:14px;}
.intro-aside ul{display:flex;flex-direction:column;gap:12px;}
.intro-aside li{
  display:flex;
  gap:10px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.7;
}
.intro-aside li i{color:var(--brand);margin-top:4px;font-size:13px;}

/* ---------- Steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--shadow-1);
  transition:transform var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:10px;
  background:rgba(23,225,196,.12);
  color:var(--brand);
  font-weight:700;
  font-size:14px;
  margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{color:var(--text-2);font-size:15px;margin:0;line-height:1.78;}

/* ---------- Game list ---------- */
.game-list{display:flex;flex-direction:column;gap:22px;}
.game-card{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.game-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-2);
}
.game-card .grid-x{align-items:stretch;}
.game-card .grid-x,
.game-card .cell{padding:0;}
.row-media{padding:0;}
.media-frame{
  position:relative;
  width:100%;
  height:100%;
  min-height:220px;
  overflow:hidden;
  border-radius:0;
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 280ms ease-out;
}
.game-card:hover .media-frame img{transform:scale(1.03);}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  box-shadow:inset 0 0 0 1px var(--line);
  pointer-events:none;
}
.row-body{
  padding:26px 28px;
  display:flex;
  flex-direction:column;
  gap:12px;
  height:100%;
}
.row-topline{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.row-body h3{font-size:21px;line-height:1.35;}
.row-body p{color:var(--text-2);font-size:15.5px;line-height:1.8;margin:0;}
.row-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 20px;
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.04em;
}
.row-meta span{display:inline-flex;align-items:center;gap:7px;}
.row-meta i{color:var(--brand);font-size:12px;}
.row-foot{
  margin-top:auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-top:6px;
}

/* ---------- FAQ ---------- */
.faq-wrap{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}
.faq-item{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:0;
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{
  background:rgba(6,10,18,.72);
  border-color:var(--line-strong);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 22px;
  cursor:pointer;
  list-style:none;
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .faq-icon{
  flex:0 0 auto;
  width:24px;height:24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:6px;
  background:rgba(23,225,196,.12);
  color:var(--brand);
  font-size:12px;
  transition:transform var(--ease);
}
.faq-item[open] summary .faq-icon{transform:rotate(45deg);}
.faq-body{
  padding:0 22px 22px 22px;
  border-top:1px solid var(--line);
  margin-top:0;
}
.faq-body p{
  position:relative;
  margin:16px 0 0;
  padding-left:14px;
  color:var(--text-2);
  font-size:15.5px;
  line-height:1.8;
}
.faq-body p::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:2px;
  border-radius:2px;
  background:var(--brand);
}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:18px;
  border:1px solid var(--line);
  background:
    radial-gradient(120% 140% at 12% 0%,rgba(23,225,196,.14),rgba(23,225,196,0) 55%),
    linear-gradient(150deg,var(--bg-2),var(--bg-0));
  padding:44px 40px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  box-shadow:var(--shadow-2);
}
.cta-band::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(23,225,196,.6),rgba(255,255,255,0));
}
.cta-copy{max-width:620px;}
.cta-copy h2{font-size:28px;line-height:1.32;}
.cta-copy p{color:var(--text-2);font-size:16px;margin:12px 0 0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.privacy-note{
  margin-top:20px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
}
.privacy-note a{color:var(--text-2);text-decoration:underline;text-decoration-color:rgba(147,163,184,.4);}
.privacy-note a:hover{color:var(--brand);}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:60px 0 26px;
  margin-top:0;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.16),rgba(255,255,255,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:34px;
  padding-bottom:40px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.85;
  margin:0;
  max-width:340px;
}
.footer-col h4{
  font-size:15px;
  margin-bottom:16px;
  color:var(--text);
  letter-spacing:.04em;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14.5px;color:var(--text-2);line-height:1.7;}
.footer-col a{color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:20px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.04em;
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- Responsive ---------- */
@media screen and (max-width:1023px){
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .grid-container{padding-left:22px;padding-right:22px;}
  .category-hero h1{font-size:34px;}
  .section{padding:64px 0;}
  .section-title{font-size:27px;}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .faq-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px;}
  .cta-band{padding:34px 26px;}
}
@media screen and (max-width:639px){
  body{font-size:15.5px;}
  .grid-container{padding-left:18px;padding-right:18px;}
  .header-inner{min-height:64px;gap:12px;}
  .logo{font-size:17px;}
  .btn-header{display:none;}
  .category-hero{padding:38px 0 46px;}
  .category-hero h1{font-size:28px;}
  .hero-lead{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{padding-top:20px;margin-top:30px;}
  .hero-stat{
    flex:1 1 46%;
    padding-right:14px;
    margin-right:14px;
    margin-bottom:18px;
    border-right:0;
    border-bottom:1px solid var(--line);
    padding-bottom:14px;
  }
  .hero-stat:nth-child(2n){padding-right:0;margin-right:0;}
  .hero-stat:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0;}
  .hero-stat b{font-size:24px;}
  .section{padding:48px 0;}
  .section-title{font-size:23px;}
  .section-desc{font-size:15px;}
  .steps{grid-template-columns:1fr;}
  .game-card .grid-x{margin-left:0;margin-right:0;}
  .game-card .cell{margin-left:0;margin-right:0;width:100%;}
  .media-frame{min-height:0;aspect-ratio:16/9;}
  .row-body{padding:20px 18px;}
  .row-body h3{font-size:19px;}
  .row-foot .btn{width:100%;}
  .faq-item summary{font-size:16px;padding:17px 18px;}
  .faq-body{padding:0 18px 20px;}
  .cta-copy h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media screen and (min-width:640px) and (max-width:1023px){
  .game-card .cell.small-12{margin-bottom:0;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
}

/* roulang page: article */
:root{
  --bg-0:#060A12;
  --bg-1:#0A101C;
  --bg-2:#101A2B;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#17E1C4;
  --brand-2:#2FA8FF;
  --accent:#FF7A45;
  --text:#E9F0F8;
  --text-2:#93A3B8;
  --text-3:#5F6E82;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(0,0,0,.45);
  --shadow-2:0 16px 40px -16px rgba(0,0,0,.7);
  --edge:0 0 0 1px rgba(23,225,196,.14);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:visited{color:var(--brand)}
a:hover{color:#4DF0DA}
h1,h2,h3,h4,h5,h6{font-family:inherit;color:var(--text);font-weight:700;margin:0;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.grid-container{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}
.grid-container.full-bleed{padding-left:0;padding-right:0}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,16,28,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .18s ease-out,border-color .18s ease-out;
}
.site-header.is-scrolled{background:var(--bg-1);border-bottom-color:var(--line)}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:74px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:11px;
  color:var(--text);
  font-size:19px;
  font-weight:700;
  letter-spacing:.02em;
  flex:0 0 auto;
}
.logo:visited{color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{
  display:grid;
  grid-template-columns:repeat(3,4px);
  grid-template-rows:repeat(3,4px);
  gap:3px;
  flex:0 0 auto;
}
.logo-mark i{display:block;width:4px;height:4px;border-radius:1px;background:var(--brand);opacity:.32}
.logo-mark i:nth-child(1),
.logo-mark i:nth-child(5),
.logo-mark i:nth-child(9){opacity:1}
.nav-desktop{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 0;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
  transition:color .18s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease-out;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,
.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--text);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.04);
  color:var(--text);
  font-size:17px;
  transition:background .18s ease-out,border-color .18s ease-out;
}
.nav-toggle:hover{background:rgba(255,255,255,.08);border-color:rgba(23,225,196,.4)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  min-height:44px;
  line-height:1;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease-out,filter .18s ease-out,background .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121A;
  box-shadow:0 0 0 1px rgba(23,225,196,.35),0 8px 24px -8px rgba(23,225,196,.6);
}
.btn-primary:visited{color:#04121A}
.btn-primary:hover{
  color:#04121A;
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(23,225,196,.5),0 14px 32px -10px rgba(23,225,196,.7);
}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:visited{color:var(--text)}
.btn-ghost:hover{
  color:var(--text);
  background:rgba(255,255,255,.06);
  border-color:rgba(23,225,196,.4);
  transform:translateY(-2px);
}
.btn-pill{border-radius:999px}
.btn-header{padding:11px 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--brand);
  font-size:15px;
  font-weight:600;
}
.link-arrow i{transition:transform .18s ease-out}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 通用徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:6px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  background:rgba(23,225,196,.12);
  color:var(--brand);
  white-space:nowrap;
}
.badge-accent{background:rgba(255,122,69,.14);color:var(--accent)}
.badge-muted{background:rgba(255,255,255,.06);color:var(--text-2)}

/* ---------- 移动端抽屉 ---------- */
.mobile-panel{
  position:fixed;
  inset:0;
  z-index:70;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:88px 28px 36px;
  background:rgba(6,10,18,.97);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  opacity:0;
  visibility:hidden;
  transform:translateY(-14px);
  transition:opacity .2s ease-out,transform .2s ease-out,visibility .2s ease-out;
}
.mobile-panel.open{opacity:1;visibility:visible;transform:none}
.mobile-link{
  display:block;
  padding:16px 2px;
  border-bottom:1px solid var(--line);
  color:var(--text);
  font-size:21px;
  font-weight:600;
}
.mobile-link.active{color:var(--brand)}
.mobile-panel .btn{margin-top:30px}
.mobile-note{margin-top:20px;font-size:13px;line-height:1.75;color:var(--text-3)}
body.nav-open{overflow:hidden}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:36px 0 40px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(6,10,18,.9),rgba(10,16,28,.97)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:46px 46px;
  opacity:.4;
  pointer-events:none;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 88%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 88%);
}
.article-hero .grid-container{position:relative;z-index:1}
.crumb{margin-bottom:22px}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);letter-spacing:.02em}
.crumb li{display:inline-flex;align-items:center;gap:8px;max-width:100%}
.crumb li + li::before{content:"/";color:var(--text-3)}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .crumb-current{
  color:var(--text-3);
  max-width:340px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  display:inline-block;
  vertical-align:bottom;
}
.article-hero h1{
  max-width:860px;
  font-size:42px;
  font-weight:700;
  line-height:1.25;
  letter-spacing:.01em;
  margin:14px 0 20px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--text-2);
  letter-spacing:.04em;
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta .meta-item i{color:var(--brand);font-size:12px}
.meta-dot{color:var(--text-3)}

/* ---------- 正文布局 ---------- */
.article-main{padding:48px 0 0}
.read-col{max-width:820px}
.article-cover{
  margin:0 0 34px;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  aspect-ratio:16/9;
  position:relative;
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-cover figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:26px 18px 12px;
  font-size:13px;
  color:rgba(233,240,248,.78);
  background:linear-gradient(180deg,transparent,rgba(6,10,18,.82));
}
.article-body{
  font-size:17px;
  line-height:1.85;
  color:#D8E3F0;
  max-width:820px;
  word-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 18px}
.article-body h2{
  font-size:30px;
  font-weight:700;
  line-height:1.35;
  margin:40px 0 16px;
  padding-left:16px;
  position:relative;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.28em;bottom:.28em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.article-body h3{font-size:21px;font-weight:600;margin:28px 0 12px}
.article-body h4{font-size:18px;font-weight:600;margin:22px 0 10px}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(23,225,196,.35)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body strong{color:#FFFFFF;font-weight:600}
.article-body ul,
.article-body ol{margin:0 0 18px;padding-left:20px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:8px}
.article-body ul li::marker,
.article-body ol li::marker{color:var(--brand)}
.article-body blockquote{
  margin:26px 0;
  padding:16px 22px;
  border-left:3px solid var(--brand);
  background:rgba(255,255,255,.035);
  border-radius:0 10px 10px 0;
  color:var(--text-2);
  font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  max-width:100%;
  height:auto;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  margin:24px auto;
}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-2);text-align:center;margin-top:10px}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:10px;
  overflow:hidden;
}
.article-body thead th{background:rgba(23,225,196,.08);color:var(--text)}
.article-body th,
.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.article-body pre{
  margin:24px 0;
  padding:18px 20px;
  background:var(--bg-0);
  border:1px solid var(--line);
  border-radius:10px;
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em;color:var(--brand)}
.article-body hr{border:0;height:1px;background:var(--line);margin:34px 0}
.article-body .table-scroll{overflow-x:auto;margin:26px 0}
.article-body .table-scroll table{margin:0}

/* 空态 */
.article-empty{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:56px 28px;
  text-align:center;
  max-width:820px;
}
.article-empty i{font-size:34px;color:var(--brand)}
.article-empty h2{font-size:24px;margin:18px 0 10px}
.article-empty p{color:var(--text-2);font-size:15px;margin-bottom:24px}

/* 标签与分享 */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:40px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:13px;color:var(--text-3);letter-spacing:.06em;margin-right:4px}
.share-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  margin-top:20px;
  font-size:14px;
  color:var(--text-2);
}
.share-btn{
  width:42px;height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  font-size:15px;
  transition:transform .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.share-btn:hover{color:var(--brand);border-color:rgba(23,225,196,.4);transform:translateY(-2px)}
.share-btn.copied{color:var(--accent);border-color:rgba(255,122,69,.45)}
.share-hint{font-size:13px;color:var(--text-3)}

/* 继续浏览 */
.next-block{margin-top:48px}
.block-title{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:20px;
}
.block-title .idx{
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--brand);
}
.block-title h2{font-size:20px;font-weight:700}
.next-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.next-card{
  display:flex;
  gap:16px;
  align-items:center;
  padding:16px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.next-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.next-card .thumb{
  flex:0 0 96px;
  width:96px;height:72px;
  border-radius:10px;
  overflow:hidden;
  border:1px solid var(--line);
}
.next-card .thumb img{width:100%;height:100%;object-fit:cover}
.next-card h3{font-size:16px;font-weight:600;margin-bottom:6px;color:var(--text)}
.next-card p{font-size:13px;color:var(--text-2);line-height:1.65}
.next-card .tagline{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--brand);margin-top:8px}

/* 返回入口 */
.back-row{margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}

/* ---------- 侧栏 ---------- */
.sidebar-inner{position:sticky;top:96px}
.side-card{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  margin-bottom:20px;
  position:relative;
  overflow:hidden;
}
.side-card::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.35),rgba(255,255,255,0));
}
.side-card h3{
  font-size:16px;
  font-weight:700;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:9px;
}
.side-card h3 i{color:var(--brand);font-size:14px}
.toc-list li{
  position:relative;
  padding:9px 0 9px 18px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.65;
  border-bottom:1px dashed rgba(255,255,255,.07);
}
.toc-list li:last-child{border-bottom:0;padding-bottom:0}
.toc-list li::before{
  content:"";
  position:absolute;
  left:0;top:17px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand);
  opacity:.7;
}
.side-note{margin-top:14px;font-size:12.5px;color:var(--text-3);line-height:1.7}
.hot-list li + li{margin-top:14px}
.hot-item{display:flex;gap:12px;align-items:center}
.hot-item .thumb{
  flex:0 0 68px;
  width:68px;height:52px;
  border-radius:9px;
  overflow:hidden;
  border:1px solid var(--line);
}
.hot-item .thumb img{width:100%;height:100%;object-fit:cover}
.hot-item strong{display:block;font-size:14px;font-weight:600;color:var(--text);line-height:1.5;transition:color .18s ease-out}
.hot-item:hover strong{color:var(--brand)}
.hot-item span{display:block;font-size:12px;color:var(--text-3);margin-top:3px}
.cta-card{
  background:linear-gradient(160deg,rgba(23,225,196,.12),rgba(47,168,255,.06));
  border:1px solid rgba(23,225,196,.24);
}
.cta-card h3{color:var(--text)}
.cta-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:18px}
.cta-card .privacy-mini{margin-top:14px;font-size:12px;color:var(--text-3);line-height:1.65}
.cta-card .privacy-mini a{border-bottom:1px solid rgba(23,225,196,.35)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding-top:64px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,225,196,.5),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.5fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:320px}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:12px;font-size:14px;color:var(--text-2);line-height:1.7}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.02em;
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-hero h1{font-size:38px}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px}
}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{min-height:68px;gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .sidebar-inner{position:static;margin-top:44px}
  .article-hero h1{font-size:34px}
  .article-body h2{font-size:26px}
  .article-body h3{font-size:20px}
}
@media (min-width:1024px){
  .mobile-panel{display:none}
}
@media (max-width:768px){
  .article-hero{padding:26px 0 32px}
  .article-hero h1{font-size:31px;margin:12px 0 16px}
  .article-main{padding-top:36px}
  .article-cover{border-radius:10px}
  .next-grid{grid-template-columns:1fr}
  .crumb .crumb-current{max-width:200px}
}
@media (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px}
  body{font-size:15.5px}
  .article-hero h1{font-size:28px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:23px;margin:34px 0 14px}
  .article-body h3{font-size:19px;margin:24px 0 10px}
  .article-empty{padding:40px 20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (max-width:420px){
  .btn-header{padding:10px 14px;font-size:13px}
  .logo{font-size:17px}
  .next-card{flex-direction:column;align-items:flex-start}
  .next-card .thumb{width:100%;flex:0 0 auto;height:150px}
}

/* roulang page: category2 */
:root{
  --bg:#F5F8FB;
  --surface:#FFFFFF;
  --surface-2:#EDF4F9;
  --ink:#0F1B2B;
  --ink-2:#54657C;
  --ink-3:#8B9AAE;
  --brand:#0FB5A0;
  --brand-deep:#0A8C7B;
  --brand-soft:rgba(15,181,160,.10);
  --accent:#FF7A45;
  --accent-soft:rgba(255,122,69,.12);
  --line:rgba(15,27,43,.09);
  --line-2:rgba(15,27,43,.16);
  --r-lg:22px;
  --r:16px;
  --r-sm:12px;
  --shadow-s:0 1px 2px rgba(15,27,43,.06);
  --shadow-m:0 16px 38px -20px rgba(15,27,43,.32);
  --shadow-l:0 30px 70px -34px rgba(15,27,43,.42);
  --ease:180ms ease-out;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,figure,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand-deep);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand);}
button{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

/* ---------- 容器 ---------- */
.grid-container{
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:20px;
  padding-right:20px;
}
@media screen and (min-width:64em){
  .grid-container{padding-left:32px;padding-right:32px;}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.97);
  border-bottom-color:var(--line);
  box-shadow:0 8px 26px -22px rgba(15,27,43,.55);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--ink);
  white-space:nowrap;
}
.logo:hover{color:var(--ink);}
.logo-mark{
  display:inline-grid;
  grid-template-columns:repeat(3,4px);
  grid-template-rows:repeat(3,4px);
  gap:2px;
  flex:none;
}
.logo-mark i{display:block;width:4px;height:4px;border-radius:1px;background:var(--brand);}
.logo-mark i:nth-child(1),
.logo-mark i:nth-child(3),
.logo-mark i:nth-child(7),
.logo-mark i:nth-child(9){opacity:.42;}
.logo-mark i:nth-child(5){background:var(--accent);}

.nav-desktop{display:none;align-items:center;gap:4px;margin-left:10px;}
@media screen and (min-width:64em){.nav-desktop{display:flex;}}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
  transition:color var(--ease),background var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:6px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),rgba(15,181,160,0));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--ink);background:var(--surface-2);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-deep);background:var(--brand-soft);}
.nav-link.active::after{transform:scaleX(1);}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:10px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  line-height:1;
  text-align:center;
  cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease),filter var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#17C9B0 0%,#2FA8FF 100%);
  color:#04161C;
  box-shadow:0 12px 26px -14px rgba(15,181,160,.85);
}
.btn-primary:hover{
  color:#04161C;
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 18px 34px -16px rgba(15,181,160,.95);
}
.btn-secondary{
  background:transparent;
  border-color:var(--line-2);
  color:var(--ink);
}
.btn-secondary:hover{
  background:var(--surface-2);
  border-color:rgba(15,181,160,.45);
  color:var(--ink);
  transform:translateY(-2px);
}
.btn-pill{border-radius:999px;}
.btn-header{padding:11px 20px;font-size:14.5px;}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 0;
  font-size:14.5px;
  font-weight:700;
  color:var(--brand-deep);
}
.btn-text i{transition:transform var(--ease);}
.btn-text:hover{color:var(--brand);}
.btn-text:hover i{transform:translateX(4px);}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line-2);
  background:var(--surface);
  color:var(--ink);
  font-size:17px;
  cursor:pointer;
  transition:background var(--ease),border-color var(--ease);
}
.nav-toggle:hover{background:var(--surface-2);border-color:rgba(15,181,160,.4);}
@media screen and (min-width:64em){.nav-toggle{display:none;}}

/* ---------- 移动端抽屉 ---------- */
.nav-mask{
  position:fixed;
  inset:0;
  z-index:70;
  background:rgba(9,17,28,.52);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s ease-out,visibility .24s ease-out;
}
.nav-mask.is-open{opacity:1;visibility:visible;}
.mobile-nav{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  z-index:80;
  width:min(84vw,340px);
  padding:26px 20px 30px;
  display:flex;
  flex-direction:column;
  gap:6px;
  background:var(--surface);
  box-shadow:-26px 0 60px -34px rgba(15,27,43,.6);
  transform:translateX(102%);
  transition:transform .26s ease-out;
  overflow-y:auto;
}
.mobile-nav.is-open{transform:translateX(0);}
.mobile-nav .m-title{font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--ink-3);padding:0 12px 10px;}
.mobile-nav a.m-link{
  padding:14px 12px;
  border-radius:12px;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
}
.mobile-nav a.m-link.active{background:var(--brand-soft);color:var(--brand-deep);}
.mobile-nav .m-cta{margin-top:16px;width:100%;}
.mobile-nav .m-note{
  margin-top:auto;
  padding:20px 12px 0;
  font-size:13px;
  line-height:1.8;
  color:var(--ink-3);
}
.mobile-nav .m-note a{color:var(--brand-deep);}

/* ---------- 分类页头 ---------- */
.page-hero{
  position:relative;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:44px 0 48px;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:6px;
  background:linear-gradient(180deg,var(--brand) 0%,#2FA8FF 52%,var(--accent) 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(620px 260px at 88% -12%,rgba(15,181,160,.16),transparent 70%),
    radial-gradient(520px 240px at 6% 118%,rgba(255,122,69,.12),transparent 72%);
}
@media screen and (min-width:64em){
  .page-hero{padding:64px 0 68px;}
}
.breadcrumb{position:relative;z-index:1;font-size:13px;color:var(--ink-3);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li + li::before{content:"/";color:var(--ink-3);opacity:.65;}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand-deep);}
.page-hero h1{
  position:relative;
  z-index:1;
  margin-top:18px;
  font-size:29px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:.01em;
  max-width:900px;
}
@media screen and (min-width:64em){
  .page-hero h1{font-size:42px;line-height:1.24;}
}
.hero-sub{
  position:relative;
  z-index:1;
  margin-top:16px;
  max-width:760px;
  font-size:16.5px;
  line-height:1.86;
  color:var(--ink-2);
}
.hero-tags{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.04em;
  background:var(--brand-soft);
  color:var(--brand-deep);
  white-space:nowrap;
}
.tag-accent{background:var(--accent-soft);color:#C0471A;}
.tag-plain{background:var(--surface-2);color:var(--ink-2);}
.tag-sm{padding:4px 10px;font-size:12px;}

/* ---------- 板块 ---------- */
.section{padding:52px 0;}
@media screen and (min-width:64em){.section{padding:84px 0;}}
.section-alt{
  background:var(--surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{margin-bottom:26px;}
@media screen and (min-width:64em){.section-head{margin-bottom:38px;}}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--brand-deep);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}
h2.section-title{
  margin-top:12px;
  font-size:23px;
  font-weight:800;
  line-height:1.36;
}
@media screen and (min-width:64em){h2.section-title{font-size:32px;}}
.section-desc{
  margin-top:12px;
  max-width:760px;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
}

/* ---------- 分类说明 ---------- */
.intro-text{
  max-width:860px;
  font-size:16.5px;
  line-height:1.88;
  color:var(--ink-2);
}
.intro-text p + p{margin-top:16px;}
.intro-text strong{color:var(--ink);font-weight:700;}

/* ---------- 主栏 + 侧栏 ---------- */
.page-layout{margin-top:0;}
.page-layout > .cell{padding-left:0;padding-right:0;}
@media screen and (min-width:64em){
  .page-layout > .cell.main-col{padding-right:26px;}
  .page-layout > .cell.side-col{padding-left:6px;}
}

/* ---------- 礼包卡片 ---------- */
.gift-grid{
  display:grid;
  gap:22px;
  grid-template-columns:1fr;
}
@media screen and (min-width:640px){
  .gift-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
.gift-card{
  position:relative;
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  overflow:hidden;
  box-shadow:var(--shadow-s);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.gift-card:hover{
  transform:translateY(-4px);
  border-color:rgba(15,181,160,.38);
  box-shadow:var(--shadow-m);
}
.gift-card .thumb{
  position:relative;
  aspect-ratio:16 / 9;
  overflow:hidden;
  background:var(--surface-2);
}
.gift-card .thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease-out;
}
.gift-card:hover .thumb img{transform:scale(1.04);}
.gift-card .thumb::after{
  content:"";
  position:absolute;
  inset:0;
  box-shadow:inset 0 0 0 1px var(--line);
  border-radius:0;
  pointer-events:none;
}
.gift-card .card-body{
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
  padding:20px 20px 22px;
}
.gift-card h3{
  font-size:18px;
  font-weight:700;
  line-height:1.45;
}
.gift-card p{
  font-size:14.5px;
  line-height:1.78;
  color:var(--ink-2);
}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;}
.card-meta{
  margin-top:auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding-top:12px;
  border-top:1px solid var(--line);
}
.card-meta .meta-note{font-size:12.5px;letter-spacing:.03em;color:var(--ink-3);}
.gift-card.is-text::before{
  content:"";
  display:block;
  height:3px;
  background:linear-gradient(90deg,var(--brand),rgba(15,181,160,0));
}
.gift-card.is-text .card-body{padding-top:24px;}
.gift-card.is-text:hover::before{background:linear-gradient(90deg,var(--accent),rgba(255,122,69,0));}

/* ---------- 侧栏 ---------- */
.side-col .side-stack{display:flex;flex-direction:column;gap:20px;}
@media screen and (min-width:64em){
  .side-col .side-stack{position:sticky;top:96px;}
}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:22px;
  box-shadow:var(--shadow-s);
}
.side-card h3{
  font-size:16px;
  font-weight:800;
  margin-bottom:14px;
  letter-spacing:.02em;
}
.side-list li + li{margin-top:8px;}
.side-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 14px;
  border-radius:12px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink-2);
  background:var(--surface-2);
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.side-list a:hover{
  background:var(--brand-soft);
  color:var(--brand-deep);
  transform:translateX(2px);
}
.side-list a i{font-size:12px;opacity:.7;}
.side-card .side-note{
  font-size:13.5px;
  line-height:1.82;
  color:var(--ink-2);
}
.side-card .side-note a{color:var(--brand-deep);font-weight:600;}
.side-cta{
  background:linear-gradient(158deg,#0F1F30 0%,#123A4A 100%);
  border-color:transparent;
  color:#DCEAF2;
}
.side-cta h3{color:#FFFFFF;}
.side-cta .side-note{color:#A3BCCE;}
.side-cta .btn{width:100%;margin-top:18px;}
.side-cta .fine{margin-top:12px;font-size:12.5px;line-height:1.7;color:#7E9BB0;}

/* ---------- 领取流程 ---------- */
.steps{
  display:grid;
  gap:18px;
  grid-template-columns:1fr;
}
@media screen and (min-width:640px){.steps{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media screen and (min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr));}}
.step{
  position:relative;
  padding:24px 20px 24px 22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow-s);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(15,181,160,.35);box-shadow:var(--shadow-m);}
.step .num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:10px;
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:14px;
  font-weight:800;
  letter-spacing:.04em;
}
.step:nth-child(3) .num{background:var(--accent-soft);color:#C0471A;}
.step h3{margin-top:14px;font-size:17px;font-weight:700;}
.step p{margin-top:10px;font-size:14.5px;line-height:1.78;color:var(--ink-2);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;}
@media screen and (min-width:1024px){
  .faq-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:start;}
}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:rgba(15,181,160,.4);box-shadow:var(--shadow-s);}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:18px 56px 18px 22px;
  font-size:16.5px;
  font-weight:700;
  line-height:1.55;
  color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::-moz-list-bullet{list-style:none;}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:22px;
  top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:500;
  line-height:1;
  color:var(--brand-deep);
  transition:transform var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-body{padding:0 24px 22px;}
.faq-body p{
  border-left:2px solid var(--brand);
  padding-left:14px;
  font-size:15.5px;
  line-height:1.86;
  color:var(--ink-2);
}
.faq-body p + p{margin-top:10px;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  padding:38px 24px;
  background:linear-gradient(135deg,#0B1B2B 0%,#113548 56%,#0D4744 100%);
  color:#EAF3F8;
  box-shadow:var(--shadow-l);
}
@media screen and (min-width:64em){.cta-band{padding:56px;}
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.45;
}
.cta-band h2{position:relative;z-index:1;font-size:23px;font-weight:800;line-height:1.36;}
@media screen and (min-width:64em){.cta-band h2{font-size:30px;}}
.cta-band p{
  position:relative;
  z-index:1;
  margin-top:14px;
  max-width:660px;
  font-size:15.5px;
  line-height:1.85;
  color:#A9C2D4;
}
.cta-actions{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:26px;
}
.cta-actions .btn-secondary{
  border-color:rgba(255,255,255,.26);
  color:#EAF3F8;
}
.cta-actions .btn-secondary:hover{
  background:rgba(255,255,255,.08);
  border-color:rgba(23,201,176,.6);
  color:#FFFFFF;
}
.cta-band .privacy-line{
  position:relative;
  z-index:1;
  margin-top:20px;
  font-size:13px;
  line-height:1.78;
  color:#8FA9BE;
}
.cta-band .privacy-line a{color:#7FE6D6;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0B1626;
  color:#A9BED0;
  padding:52px 0 26px;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{
  display:grid;
  gap:30px;
  grid-template-columns:1fr;
}
@media screen and (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media screen and (min-width:1024px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
}
.site-footer .logo{color:#FFFFFF;}
.site-footer .logo:hover{color:#FFFFFF;}
.footer-brand p{
  margin-top:16px;
  max-width:340px;
  font-size:14.5px;
  line-height:1.86;
  color:#8FA5BA;
}
.footer-col h4{
  font-size:15px;
  font-weight:800;
  color:#FFFFFF;
  margin-bottom:14px;
  letter-spacing:.02em;
}
.footer-col ul li + li{margin-top:10px;}
.footer-col a,
.footer-col span{
  display:inline-block;
  font-size:14.5px;
  line-height:1.7;
  color:#8FA5BA;
  transition:color var(--ease);
}
.footer-col a:hover{color:#17C9B0;}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:#6E869C;
}
.footer-bottom a{color:#8FA5BA;}
.footer-bottom a:hover{color:#17C9B0;}

/* ---------- 通用工具 ---------- */
.mt-0{margin-top:0;}
.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;
}