/* roulang page: index */
:root{
  --bg:#060A14;
  --bg-2:#0A1020;
  --bg-3:#040711;
  --cyan:#2FD3FF;
  --amber:#FFB454;
  --success:#5BE0A8;
  --danger:#FF6B7A;
  --text:#F4F7FF;
  --muted:#9AA7BD;
  --line:rgba(160,190,255,.14);
  --line-strong:rgba(47,211,255,.42);
  --glass:rgba(13,21,38,.72);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-hover:0 16px 44px rgba(47,211,255,.18);
  --grad:linear-gradient(135deg,#2FD3FF 0%,#5B7CFF 55%,#7A5BFF 100%);
  --container:1320px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 620px at 10% -10%, rgba(47,211,255,.15), transparent 62%),
    radial-gradient(760px 540px at 94% 2%, rgba(122,91,255,.14), transparent 64%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease, opacity .25s ease;}
a:hover{color:var(--cyan);}
button{font-family:inherit;}
ul{list-style:none;margin:0;padding:0;}
::selection{background:rgba(47,211,255,.3);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#070C17;}
::-webkit-scrollbar-thumb{background:rgba(47,211,255,.24);border-radius:999px;border:2px solid #070C17;}
::-webkit-scrollbar-thumb:hover{background:rgba(47,211,255,.42);}

.container{max-width:var(--container);padding-left:24px;padding-right:24px;position:relative;z-index:1;}
.section{padding:88px 0;position:relative;z-index:1;}
.section-sm{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:38px;}
.section-head .eyebrow{margin-bottom:10px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;letter-spacing:.14em;
  color:var(--cyan);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,transparent,var(--cyan));}
h1,h2,h3,h4{font-weight:700;letter-spacing:.2px;line-height:1.28;margin:0;}
h1{font-size:clamp(2.25rem,5vw,4rem);font-weight:800;}
h2{font-size:clamp(1.5rem,2.6vw,2.25rem);}
h3{font-size:1.125rem;}
p{margin:0;}
.lead{color:var(--muted);font-size:17px;line-height:1.85;}
.text-muted-soft{color:var(--muted);}
.small-note{font-size:13px;color:var(--muted);}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border-radius:999px;font-size:15px;font-weight:600;
  padding:13px 28px;border:1px solid transparent;cursor:pointer;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease, filter .25s ease;
  white-space:nowrap;
}
.btn-main{
  background:var(--grad);
  color:#04101F;
  box-shadow:0 8px 26px rgba(47,211,255,.32);
}
.btn-main:hover{color:#04101F;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 14px 36px rgba(47,211,255,.46);}
.btn-main:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.btn-ghost{
  background:rgba(13,21,38,.55);
  color:var(--text);
  border-color:var(--line);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{color:#fff;border-color:var(--line-strong);transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-ghost:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.btn-text{padding:8px 0;color:var(--cyan);font-weight:600;background:none;border:none;}
.btn-text i{transition:transform .25s ease;}
.btn-text:hover{color:#7FE5FF;}
.btn-text:hover i{transform:translateX(4px);}
.btn-sm{padding:9px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 徽章与标签 ============ */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:5px 12px;border-radius:999px;
  background:rgba(47,211,255,.12);
  color:#8FE7FF;
  border:1px solid rgba(47,211,255,.24);
}
.badge-amber{background:rgba(255,180,84,.13);color:var(--amber);border-color:rgba(255,180,84,.28);}
.badge-green{background:rgba(91,224,168,.13);color:var(--success);border-color:rgba(91,224,168,.28);}
.badge-gray{background:rgba(154,167,189,.12);color:var(--muted);border-color:rgba(154,167,189,.22);}
.tag{
  display:inline-block;font-size:13px;color:var(--muted);
  padding:4px 10px;border-radius:8px;background:rgba(160,190,255,.07);
  border:1px solid var(--line);
}
.dot-live{
  width:7px;height:7px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 0 0 rgba(47,211,255,.55);
  animation:pulse 2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(47,211,255,.5);}
  70%{box-shadow:0 0 0 10px rgba(47,211,255,0);}
  100%{box-shadow:0 0 0 0 rgba(47,211,255,0);}
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  border-bottom:1px solid transparent;
  transition:background .3s ease, border-color .3s ease, box-shadow .3s ease, backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.84);
  backdrop-filter:blur(18px);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px rgba(0,0,0,.42);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:78px;}
.brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:800;letter-spacing:.2px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--grad);
  display:grid;place-items:center;
  color:#04101F;font-size:15px;font-weight:800;
  box-shadow:0 0 20px rgba(47,211,255,.45);
}
.brand-text small{display:block;font-size:11px;font-weight:400;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;line-height:1.2;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;
  padding:10px 15px;
  font-size:15px;
  color:var(--muted);
  border-radius:999px;
  transition:color .25s ease, background .25s ease;
}
.nav-links a:hover{color:var(--text);background:rgba(160,190,255,.06);}
.nav-links a.active{color:#fff;}
.nav-links a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),#7A5BFF);
  box-shadow:0 0 12px rgba(47,211,255,.7);
}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(13,21,38,.6);
  color:var(--text);place-items:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--cyan);}
.nav-drawer-cta{display:none;}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(4,7,17,.66);
  backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:opacity .3s ease, visibility .3s ease;z-index:1035;
}
.nav-backdrop.show{opacity:1;visibility:visible;}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:78vh;
  display:flex;align-items:center;
  padding:86px 0 70px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center right;
  z-index:0;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(680px 480px at 78% 26%, rgba(47,211,255,.18), transparent 62%),
    linear-gradient(100deg, rgba(6,10,20,.97) 0%, rgba(6,10,20,.88) 44%, rgba(6,10,20,.54) 100%);
}
.hero .container{position:relative;z-index:2;}
.hero-copy{max-width:640px;}
.hero h1{margin:18px 0 20px;}
.hero h1 .accent{
  background:linear-gradient(120deg,#2FD3FF,#8FE7FF 45%,#9E8BFF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;color:#C3CDE0;line-height:1.85;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-status{
  display:flex;flex-wrap:wrap;gap:14px 34px;
  margin-top:44px;padding-top:24px;
  border-top:1px solid var(--line);
}
.status-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);}
.status-item strong{color:var(--text);font-weight:600;font-size:15px;}
.hero-visual{position:relative;padding-left:18px;}
.hero-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(16px);
  box-shadow:var(--shadow);
}
.hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-card-overlay{
  position:absolute;left:18px;right:18px;bottom:18px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 18px;border-radius:var(--radius-md);
  background:rgba(6,10,20,.78);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
}
.hero-card-overlay .t{font-size:15px;font-weight:600;}
.hero-float{
  position:absolute;right:-6px;top:-18px;
  padding:12px 18px;border-radius:var(--radius-md);
  background:rgba(13,21,38,.88);
  border:1px solid rgba(47,211,255,.3);
  box-shadow:0 14px 40px rgba(47,211,255,.2);
  font-size:13px;color:var(--muted);
  backdrop-filter:blur(14px);
}
.hero-float strong{display:block;font-size:22px;color:var(--text);line-height:1.3;font-weight:800;}

/* ============ 横滑片库 ============ */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 24px;
  scrollbar-width:none;-ms-overflow-style:none;
  scroll-behavior:smooth;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{flex:0 0 306px;scroll-snap-align:start;}
.rail-nav{display:flex;gap:10px;}
.rail-arrow{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:rgba(13,21,38,.65);
  color:var(--muted);cursor:pointer;display:grid;place-items:center;
  transition:all .25s ease;
}
.rail-arrow:hover{color:#04101F;background:var(--cyan);border-color:var(--cyan);box-shadow:0 8px 24px rgba(47,211,255,.4);}
.rail-arrow:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.rail-fade{
  position:absolute;top:0;bottom:24px;width:90px;pointer-events:none;z-index:3;
}
.rail-fade.left{left:-24px;background:linear-gradient(90deg,rgba(6,10,20,.95),transparent);}
.rail-fade.right{right:-24px;background:linear-gradient(270deg,rgba(6,10,20,.95),transparent);}

.entry-card{
  position:relative;height:100%;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
  transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  display:flex;flex-direction:column;
}
.entry-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover);}
.entry-card__cover{position:relative;aspect-ratio:16/9;overflow:hidden;}
.entry-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease;}
.entry-card:hover .entry-card__cover img{transform:scale(1.04);}
.entry-card__cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.12) 0%,rgba(6,10,20,.72) 100%);
}
.entry-card__badge{position:absolute;left:12px;top:12px;z-index:2;}
.entry-card__meta{
  position:absolute;right:12px;bottom:12px;z-index:2;
  font-size:12px;color:#D7E2F5;
  padding:3px 10px;border-radius:999px;
  background:rgba(6,10,20,.72);border:1px solid var(--line);
}
.entry-card__body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.entry-card__body h3{font-size:17px;}
.entry-card__body p{font-size:14px;color:var(--muted);line-height:1.75;flex:1;}

/* ============ 排名卡 ============ */
.rank-item{
  display:flex;gap:22px;align-items:flex-start;
  padding:22px;border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(13,21,38,.72),rgba(10,16,32,.46));
  transition:transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  height:100%;
}
.rank-item:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-hover);}
.rank-num{
  font-size:clamp(38px,4.4vw,58px);
  font-weight:800;line-height:.95;
  color:transparent;
  -webkit-text-stroke:1.5px rgba(47,211,255,.55);
  flex:0 0 auto;letter-spacing:-.02em;
}
.rank-body{flex:1;min-width:0;}
.rank-body h3{font-size:18px;margin-bottom:8px;}
.rank-body p{font-size:14px;color:var(--muted);line-height:1.78;margin-bottom:12px;}
.rank-tags{display:flex;flex-wrap:wrap;gap:8px;}
.rank-thumb{
  width:112px;height:72px;border-radius:var(--radius-sm);overflow:hidden;flex:0 0 auto;
  border:1px solid var(--line);
}
.rank-thumb img{width:100%;height:100%;object-fit:cover;}

/* ============ 专题 ============ */
.feature-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);min-height:320px;
  display:flex;align-items:flex-end;
}
.feature-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.feature-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(6,10,20,.28) 0%,rgba(6,10,20,.9) 78%);
}
.feature-card__body{position:relative;z-index:2;padding:26px;}
.feature-card__body h3{font-size:22px;margin:12px 0 10px;}
.feature-card__body p{font-size:14px;color:#B9C5D9;line-height:1.78;max-width:420px;}

.mini-list{display:flex;flex-direction:column;gap:14px;height:100%;}
.mini-item{
  display:flex;gap:16px;align-items:center;
  padding:16px;border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:rgba(13,21,38,.5);
  transition:all .28s ease;
}
.mini-item:hover{border-color:var(--line-strong);background:rgba(13,21,38,.85);transform:translateX(4px);}
.mini-item__thumb{width:76px;height:56px;border-radius:10px;overflow:hidden;flex:0 0 auto;}
.mini-item__thumb img{width:100%;height:100%;object-fit:cover;}
.mini-item h3{font-size:16px;margin-bottom:4px;}
.mini-item p{font-size:13px;color:var(--muted);line-height:1.6;}

.topic-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;}
.topic-card{
  padding:22px;border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:rgba(10,16,32,.6);
  transition:all .28s ease;
}
.topic-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.topic-card i{font-size:20px;color:var(--cyan);margin-bottom:14px;display:block;}
.topic-card h3{font-size:16px;margin-bottom:8px;}
.topic-card p{font-size:14px;color:var(--muted);line-height:1.72;}

/* ============ 资讯列表 ============ */
.news-card{
  height:100%;
  padding:24px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(13,21,38,.7),rgba(9,14,28,.5));
  display:flex;flex-direction:column;gap:12px;
  transition:all .3s ease;
}
.news-card:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.news-card__top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.news-card__time{font-size:13px;color:var(--muted);}
.news-card__title{font-size:17px;line-height:1.6;}
.news-card__title a:hover{color:var(--cyan);}
.news-card__desc{font-size:14px;color:var(--muted);line-height:1.78;flex:1;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--cyan);}
.link-arrow i{transition:transform .25s ease;}
.link-arrow:hover i{transform:translateX(4px);}
.empty-state{
  text-align:center;padding:56px 24px;
  border:1px dashed var(--line);border-radius:var(--radius-lg);
  background:rgba(10,16,32,.45);
}
.empty-state i{font-size:30px;color:var(--muted);opacity:.7;margin-bottom:14px;display:block;}
.empty-state p{color:var(--muted);margin-bottom:18px;}

/* ============ 保障条 ============ */
.assure-panel{
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:rgba(10,16,32,.55);
  padding:12px;
}
.assure-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.assure-item{padding:22px 24px;border-right:1px solid var(--line);}
.assure-item:last-child{border-right:none;}
.assure-item i{color:var(--cyan);font-size:18px;margin-bottom:12px;display:block;}
.assure-item h3{font-size:16px;margin-bottom:8px;}
.assure-item p{font-size:13px;color:var(--muted);line-height:1.7;}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-accordion .accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line);
}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text);
  font-size:16px;font-weight:600;
  padding:22px 46px 22px 0;
  box-shadow:none;border-radius:0;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--cyan);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-accordion .accordion-button::after{
  background-image:none;
  content:"\f078";
  font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;font-size:13px;color:var(--muted);
  transition:transform .3s ease, color .3s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(180deg);color:var(--cyan);}
.faq-accordion .accordion-body{
  padding:0 40px 24px 0;
  font-size:15px;line-height:1.85;color:var(--muted);
}

/* ============ 登录 CTA ============ */
.login-section{
  position:relative;overflow:hidden;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:#070C18;
  padding:92px 0;
}
.login-section .bg-img{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.24;
}
.login-section::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(6,10,20,.96) 0%,rgba(6,10,20,.82) 50%,rgba(6,10,20,.94) 100%);
}
.login-section .container{position:relative;z-index:2;}
.cta-copy h2{margin:16px 0 18px;}
.cta-copy p{color:#BEC9DC;max-width:520px;}
.cta-points{margin-top:28px;display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#C6D1E4;}
.cta-points i{color:var(--success);margin-top:5px;font-size:14px;}
.login-panel{
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:rgba(11,18,34,.82);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  padding:34px 32px 30px;
}
.login-panel h3{font-size:20px;margin-bottom:6px;}
.login-panel .sub{font-size:13px;color:var(--muted);margin-bottom:24px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;font-weight:500;}
.field input{
  width:100%;height:50px;padding:0 16px;
  border-radius:var(--radius-sm);
  background:rgba(6,10,20,.8);
  border:1px solid var(--line);
  color:var(--text);font-size:15px;
  transition:border-color .25s ease, box-shadow .25s ease, background .25s ease;
}
.field input::placeholder{color:rgba(154,167,189,.65);}
.field input:focus{
  outline:none;border-color:var(--cyan);
  box-shadow:0 0 0 4px rgba(47,211,255,.14);
  background:rgba(6,10,20,.95);
}
.field-row{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:24px;}
.check{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);cursor:pointer;}
.check input{width:16px;height:16px;accent-color:#2FD3FF;cursor:pointer;}
.login-panel .tip{margin-top:18px;font-size:13px;color:var(--muted);text-align:center;}
.login-panel .tip a{color:var(--cyan);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-3);
  border-top:1px solid var(--line);
  padding:70px 0 0;
  position:relative;z-index:1;
}
.footer-brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:800;margin-bottom:18px;}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.85;max-width:340px;}
.footer-social{display:flex;gap:12px;margin-top:24px;}
.footer-social a{
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);display:grid;place-items:center;
  color:var(--muted);font-size:15px;
  transition:all .25s ease;
}
.footer-social a:hover{color:#04101F;background:var(--cyan);border-color:var(--cyan);transform:translateY(-2px);}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:56px;padding:24px 0;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:20px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .rail-card{flex:0 0 288px;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .hero{padding:64px 0 52px;min-height:auto;}
  .hero-visual{padding-left:0;margin-top:44px;}
  .assure-grid{grid-template-columns:repeat(2,1fr);}
  .assure-item:nth-child(2){border-right:none;}
  .assure-item:nth-child(1),.assure-item:nth-child(2){border-bottom:1px solid var(--line);}
  .nav-toggle{display:grid;}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;
    width:min(330px,86vw);
    flex-direction:column;align-items:flex-start;gap:6px;
    padding:100px 28px 40px;
    background:rgba(7,12,24,.97);
    backdrop-filter:blur(20px);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .35s cubic-bezier(.4,0,.2,1);
    z-index:1050;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links a{
    width:100%;font-size:19px;padding:13px 0;
    border-bottom:1px solid rgba(160,190,255,.08);
    border-radius:0;
  }
  .nav-links a:hover{background:transparent;color:var(--cyan);}
  .nav-links a.active::after{left:0;right:auto;width:30px;bottom:6px;}
  .nav-links .nav-drawer-cta{
    display:inline-flex;margin-top:22px;width:100%;
    border-bottom:none;justify-content:center;
  }
  .nav-right .nav-cta{display:none;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .rail-fade{display:none;}
}
@media (max-width:767px){
  .container{padding-left:18px;padding-right:18px;}
  .section{padding:56px 0;}
  .hero h1{font-size:clamp(1.9rem,7vw,2.5rem);}
  .hero-sub{font-size:16px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{flex:1;justify-content:center;min-width:150px;}
  .hero-float{right:8px;top:-12px;padding:10px 14px;}
  .hero-status{gap:12px 22px;}
  .rank-item{flex-direction:row;gap:16px;padding:18px;}
  .rank-thumb{display:none;}
  .login-panel{padding:26px 22px;margin-top:32px;}
  .login-section{padding:64px 0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .rail-card{flex:0 0 79%;}
  .entry-card__body{padding:16px;}
  .assure-grid{grid-template-columns:1fr;}
  .assure-item{border-right:none;border-bottom:1px solid var(--line);}
  .assure-item:last-child{border-bottom:none;}
  .topic-grid{grid-template-columns:1fr;}
  .hero-card-overlay{left:12px;right:12px;bottom:12px;padding:12px 14px;}
  .hero-card-overlay .t{font-size:14px;}
}

/* roulang page: article */
:root{
  --bg-0:#040711;
  --bg-1:#060A14;
  --bg-2:#0A1020;
  --cyan:#2FD3FF;
  --cyan-soft:rgba(47,211,255,.14);
  --amber:#FFB454;
  --green:#5BE0A8;
  --danger:#FF6B7A;
  --text:#F4F7FF;
  --muted:#9AA7BD;
  --line:rgba(160,190,255,.14);
  --line-strong:rgba(160,190,255,.26);
  --glass:rgba(13,21,38,.72);
  --glass-soft:rgba(13,21,38,.48);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-1:0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 16px 44px rgba(47,211,255,.18);
  --grad:linear-gradient(135deg,#2FD3FF 0%,#5B7CFF 55%,#8B5CF6 100%);
  --grad-soft:linear-gradient(135deg,rgba(47,211,255,.18) 0%,rgba(139,92,246,.14) 100%);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  color:var(--text);
  background:
    radial-gradient(1100px 620px at 82% -12%,rgba(47,211,255,.13),transparent 62%),
    radial-gradient(880px 520px at 6% 4%,rgba(139,92,246,.12),transparent 60%),
    var(--bg-1);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--cyan);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{font-weight:700;letter-spacing:-.01em;color:var(--text);}
p{margin:0 0 1em;}
ul,ol{padding-left:1.2em;}
::selection{background:rgba(47,211,255,.28);color:#fff;}

.container{max-width:1320px;width:100%;padding-left:24px;padding-right:24px;margin:0 auto;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(6,10,20,.55);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(6,10,20,.9);
  border-bottom-color:var(--line);
  box-shadow:0 8px 30px rgba(0,0,0,.45);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:76px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  background:var(--grad);
  color:#04101c;font-family:var(--font-num);font-weight:800;font-size:19px;
  box-shadow:0 8px 24px rgba(47,211,255,.35);
}
.brand-text{
  display:flex;flex-direction:column;line-height:1.15;
  font-size:17px;font-weight:700;color:var(--text);letter-spacing:.2px;
}
.brand-text small{
  font-size:11px;font-weight:400;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);
}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links > a{
  position:relative;font-size:15px;color:#C8D3E6;padding:8px 0;
  white-space:nowrap;
}
.nav-links > a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  border-radius:2px;background:var(--grad);
  transform:scaleX(0);transform-origin:left;transition:transform .28s ease;
}
.nav-links > a:hover{color:#fff;}
.nav-links > a:hover::after{transform:scaleX(1);}
.nav-links > a.active{color:#fff;}
.nav-links > a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--glass-soft);
  color:var(--text);font-size:17px;align-items:center;justify-content:center;
  transition:border-color .25s ease,color .25s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}

.btn-main{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 26px;border-radius:999px;border:none;
  background:var(--grad);color:#03121d;
  font-size:15px;font-weight:700;letter-spacing:.2px;
  box-shadow:0 10px 26px rgba(47,211,255,.3);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.btn-main:hover{color:#03121d;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 16px 40px rgba(47,211,255,.44);}
.btn-main:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.btn-main.btn-sm{padding:10px 20px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 24px;border-radius:999px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.03);
  color:var(--text);font-size:15px;font-weight:600;
  transition:border-color .22s ease,background .22s ease,transform .22s ease;
}
.btn-ghost:hover{border-color:var(--cyan);color:#fff;background:rgba(47,211,255,.08);transform:translateY(-1px);}
.btn-ghost:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--cyan);
}
.btn-text i{transition:transform .22s ease;}
.btn-text:hover{color:#fff;}
.btn-text:hover i{transform:translateX(4px);}
.nav-drawer-cta{display:none;}

/* ============ 内页 Banner ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 54px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center 30%;
  opacity:.34;z-index:0;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(6,10,20,.72) 0%,rgba(6,10,20,.9) 62%,var(--bg-1) 100%);
}
.page-hero .container{position:relative;z-index:2;}

.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:20px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--cyan);}
.crumb .sep{opacity:.5;}
.crumb .current{color:#D5DEEC;}
.page-title{
  font-size:clamp(1.65rem,3.4vw,2.6rem);
  line-height:1.35;margin:0 0 18px;font-weight:800;
  max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--cyan-soft);color:var(--cyan);
  border:1px solid rgba(47,211,255,.24);
}
.badge.amber{background:rgba(255,180,84,.14);color:var(--amber);border-color:rgba(255,180,84,.26);}
.badge.green{background:rgba(91,224,168,.13);color:var(--green);border-color:rgba(91,224,168,.24);}
.meta-item{display:inline-flex;align-items:center;gap:6px;}

/* ============ 正文布局 ============ */
.article-section{padding:56px 0 24px;}
.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:48px;align-items:start;}

.article-hero-figure{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);margin-bottom:34px;
  position:relative;
}
.article-hero-figure img{
  width:100%;aspect-ratio:16/7;object-fit:cover;
  transition:transform .5s ease;
}
.article-hero-figure:hover img{transform:scale(1.03);}
.article-hero-figure figcaption{
  position:absolute;left:16px;bottom:14px;
  font-size:12.5px;color:#DCE5F2;
  background:rgba(6,10,20,.72);
  border:1px solid var(--line);
  padding:5px 12px;border-radius:999px;
  backdrop-filter:blur(6px);
}

.article-body{
  max-width:860px;
  font-size:16.5px;line-height:1.9;color:#DDE5F1;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.5em;}
.article-body h2{
  position:relative;
  font-size:clamp(1.3rem,2.2vw,1.6rem);
  margin:2.2em 0 .9em;padding-left:15px;font-weight:750;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:3px;
  border-radius:3px;background:var(--grad);
}
.article-body h3{
  font-size:1.18rem;margin:1.8em 0 .7em;padding-left:12px;
  position:relative;font-weight:700;
}
.article-body h3::before{
  content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;
  border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(47,211,255,.7);
}
.article-body a{color:var(--cyan);border-bottom:1px dashed rgba(47,211,255,.5);}
.article-body a:hover{color:#fff;border-bottom-color:#fff;}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:1.35em;}
.article-body li{margin-bottom:.65em;}
.article-body li::marker{color:var(--cyan);}
.article-body img{border-radius:var(--radius-sm);margin:1.6em 0;box-shadow:var(--shadow-1);}
.article-body blockquote{
  margin:1.8em 0;padding:20px 24px;
  border-left:3px solid var(--amber);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  background:var(--glass-soft);
  color:#E7EEF9;font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 15px;border-bottom:1px solid var(--line);text-align:left;
}
.article-body th{background:rgba(47,211,255,.09);color:#fff;font-weight:650;}
.article-body tr:last-child td{border-bottom:none;}
.article-body code{
  font-family:var(--font-num);font-size:14px;
  background:rgba(47,211,255,.12);color:#8FE3FF;
  padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:18px 20px;overflow:auto;margin:1.8em 0;
}
.article-body pre code{background:none;padding:0;color:#CFE6FF;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0;}
.article-body strong{color:#fff;font-weight:700;}

.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius-lg);
  background:var(--glass-soft);padding:52px 28px;text-align:center;
}
.empty-state i{font-size:34px;color:var(--cyan);margin-bottom:16px;display:block;}
.empty-state h2{font-size:1.25rem;margin:0 0 10px;}
.empty-state p{color:var(--muted);margin:0 0 22px;}

/* 标签 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:38px 0 0;padding-top:26px;border-top:1px solid var(--line);}
.tag{
  padding:6px 14px;border-radius:999px;font-size:13px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:#BFCBDF;
  transition:border-color .22s ease,color .22s ease,background .22s ease;
}
.tag:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(47,211,255,.08);}

/* 侧栏 */
.side-stack{display:flex;flex-direction:column;gap:22px;position:sticky;top:100px;}
.side-card{
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--glass);backdrop-filter:blur(12px);
  padding:24px;
  box-shadow:var(--shadow-1);
}
.side-card h3{
  font-size:1.02rem;margin:0 0 16px;display:flex;align-items:center;gap:9px;
}
.side-card h3 i{color:var(--cyan);font-size:14px;}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{margin-bottom:12px;}
.side-list li:last-child{margin-bottom:0;}
.side-list a{
  display:flex;align-items:center;gap:10px;
  font-size:14.5px;color:#C6D2E5;padding:8px 10px;border-radius:var(--radius-sm);
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.side-list a:hover{background:rgba(47,211,255,.09);color:#fff;transform:translateX(3px);}
.side-list a i{color:var(--cyan);font-size:12px;}
.side-info{list-style:none;margin:0;padding:0;font-size:14px;color:var(--muted);}
.side-info li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line);}
.side-info li:last-child{border-bottom:none;}
.side-info b{color:#DCE5F2;font-weight:600;}

/* ============ 相关推荐 ============ */
.section{padding:72px 0;}
.section-head{margin-bottom:34px;max-width:720px;}
.section-head .eyebrow{
  font-family:var(--font-num);font-size:12.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--cyan);margin-bottom:12px;display:block;
}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin:0 0 12px;}
.section-head p{color:var(--muted);margin:0;font-size:15px;}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--glass-soft);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(47,211,255,.4);box-shadow:var(--shadow-2);}
.post-thumb{position:relative;overflow:hidden;}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease;}
.post-card:hover .post-thumb img{transform:scale(1.05);}
.post-thumb .badge{position:absolute;left:12px;top:12px;backdrop-filter:blur(6px);}
.post-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.post-body h3{font-size:1.04rem;line-height:1.5;margin:0 0 10px;}
.post-body p{font-size:14px;color:var(--muted);margin:0 0 18px;flex:1;}
.post-foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-wrap{max-width:930px;margin:0 auto;}
.accordion-item{
  background:transparent !important;border:none !important;
  border-bottom:1px solid var(--line) !important;
}
.accordion-button{
  background:transparent !important;color:var(--text) !important;
  font-size:16px;font-weight:650;padding:22px 44px 22px 0;
  box-shadow:none !important;border-radius:0 !important;
}
.accordion-button:not(.collapsed){color:var(--cyan) !important;}
.accordion-button::after{
  background-image:none;content:"\2b";
  font-family:"Font Awesome 6 Free";font-weight:900;
  width:26px;height:26px;line-height:26px;text-align:center;
  border-radius:50%;border:1px solid var(--line-strong);
  position:absolute;right:0;font-size:12px;color:var(--cyan);
  transition:transform .3s ease,border-color .3s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(135deg);border-color:var(--cyan);}
.accordion-button:focus{box-shadow:none !important;}
.accordion-body{
  padding:0 0 24px;color:var(--muted);font-size:15px;line-height:1.85;
}

/* ============ CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:26px;border:1px solid var(--line);
  padding:62px 48px;text-align:center;
  background:var(--glass);
  box-shadow:var(--shadow-1);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.26;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(6,10,20,.86) 0%,rgba(10,16,32,.8) 55%,rgba(47,211,255,.12) 100%);
}
.cta-panel > *{position:relative;z-index:2;}
.cta-panel h2{font-size:clamp(1.5rem,2.8vw,2.15rem);margin:0 0 14px;}
.cta-panel p{color:#B9C6DA;max-width:640px;margin:0 auto 30px;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:68px 0 0;margin-top:20px;
}
.footer-brand{
  display:flex;align-items:center;gap:12px;
  font-size:18px;font-weight:700;margin-bottom:18px;
}
.footer-desc{color:var(--muted);font-size:14.5px;line-height:1.85;max-width:400px;}
.footer-social{display:flex;gap:12px;margin-top:22px;}
.footer-social a{
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--muted);
  transition:border-color .25s ease,color .25s ease,transform .25s ease;
}
.footer-social a:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px);}
.footer-col h4{font-size:15px;margin:0 0 18px;font-weight:650;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:11px;font-size:14px;color:var(--muted);}
.footer-col a{color:var(--muted);font-size:14px;}
.footer-col a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:56px;padding:24px 0;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-shell{grid-template-columns:minmax(0,1fr) 300px;gap:34px;}
}
@media (max-width:991px){
  .article-shell{grid-template-columns:minmax(0,1fr);}
  .side-stack{position:static;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:56px 0;}
}
@media (max-width:860px){
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);
    flex-direction:column;align-items:flex-start;gap:8px;
    padding:96px 26px 32px;
    background:rgba(7,11,22,.97);
    border-left:1px solid var(--line);
    backdrop-filter:blur(18px);
    transform:translateX(102%);
    transition:transform .34s cubic-bezier(.4,0,.2,1);
    z-index:1050;overflow-y:auto;
  }
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-links > a{font-size:17px;width:100%;padding:14px 0;border-bottom:1px solid var(--line);}
  .nav-links > a::after{display:none;}
  .nav-links > a.active{color:var(--cyan);}
  .nav-drawer-cta{
    display:inline-flex;margin-top:24px;width:100%;justify-content:center;
  }
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .page-hero{padding:48px 0 40px;}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .cta-panel{padding:44px 22px;border-radius:20px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .article-body{font-size:16px;}
  .page-title{font-size:1.5rem;}
  .btn-main,.btn-ghost{padding:12px 20px;font-size:14px;}
  .side-card{padding:20px;}
}

/* roulang page: category1 */
:root{
  --bg:#060A14;
  --bg-2:#0A1020;
  --bg-deep:#040711;
  --panel:rgba(13,21,38,.72);
  --cyan:#2FD3FF;
  --cyan-deep:#1B9FD6;
  --violet:#6C6BFF;
  --amber:#FFB454;
  --green:#5BE0A8;
  --danger:#FF6B7A;
  --text:#F4F7FF;
  --muted:#9AA7BD;
  --line:rgba(160,190,255,.14);
  --line-strong:rgba(160,190,255,.28);
  --radius-xl:24px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-hover:0 16px 44px rgba(47,211,255,.18);
  --grad-main:linear-gradient(135deg,#2FD3FF 0%,#4E8CFF 55%,#6C6BFF 100%);
  --container:1320px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 520px at 12% -8%,rgba(47,211,255,.12),transparent 62%),
    radial-gradient(700px 460px at 92% 4%,rgba(108,107,255,.12),transparent 60%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--cyan);}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.2px;line-height:1.25;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}

.container,
.container-fluid,
.container-lg,
.container-xl{
  max-width:var(--container);
  padding-left:24px;
  padding-right:24px;
  position:relative;
  z-index:1;
}

/* ---------- Buttons ---------- */
.btn-main{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 28px;
  border:none;
  border-radius:999px;
  background:var(--grad-main);
  color:#04121C;
  font-size:15px;
  font-weight:700;
  letter-spacing:.4px;
  box-shadow:0 10px 26px rgba(47,211,255,.28);
  transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;
  cursor:pointer;
  white-space:nowrap;
}
.btn-main:hover{
  color:#04121C;
  transform:translateY(-1px);
  filter:brightness(1.08);
  box-shadow:0 16px 40px rgba(47,211,255,.42);
}
.btn-main:active{transform:translateY(0);}
.btn-sm{padding:10px 20px;font-size:13.5px;}

.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 28px;
  border-radius:999px;
  background:rgba(13,21,38,.6);
  border:1px solid var(--line-strong);
  color:var(--text);
  font-size:15px;
  font-weight:600;
  transition:transform .25s ease,border-color .25s ease,background .25s ease,color .25s ease;
  cursor:pointer;
}
.btn-ghost:hover{
  color:var(--cyan);
  border-color:rgba(47,211,255,.55);
  background:rgba(13,32,54,.75);
  transform:translateY(-1px);
}
.btn-ghost.btn-sm{padding:10px 20px;font-size:13.5px;}

.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--cyan);
  font-size:14px;
  font-weight:600;
}
.btn-text i{transition:transform .25s ease;}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(6,10,20,.58);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(7,12,24,.9);
  border-bottom-color:var(--line);
  box-shadow:0 12px 34px rgba(0,0,0,.42);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:78px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--grad-main);
  color:#04121C;
  font-weight:800;
  font-size:19px;
  font-family:Inter,system-ui,sans-serif;
  box-shadow:0 8px 22px rgba(47,211,255,.32);
}
.brand-text{
  display:flex;
  flex-direction:column;
  font-size:17px;
  font-weight:700;
  line-height:1.15;
  letter-spacing:.3px;
}
.brand-text small{
  font-family:Inter,system-ui,sans-serif;
  font-size:10.5px;
  font-weight:400;
  letter-spacing:1.6px;
  text-transform:uppercase;
  color:var(--muted);
  margin-top:3px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-links > a{
  position:relative;
  padding:9px 14px;
  font-size:14.5px;
  font-weight:500;
  color:var(--muted);
  border-radius:999px;
  white-space:nowrap;
}
.nav-links > a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--grad-main);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .28s ease;
}
.nav-links > a:hover{color:var(--text);}
.nav-links > a:hover::after{transform:scaleX(1);}
.nav-links > a.active{color:var(--text);font-weight:600;}
.nav-links > a.active::after{transform:scaleX(1);}
.nav-links > a.btn-main::after{display:none;}
.nav-links > a.btn-main{color:#04121C;margin-left:10px;}
.nav-links > a.btn-main:hover{color:#04121C;}
.nav-drawer-cta{display:none;}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(13,21,38,.7);
  color:var(--text);
  font-size:17px;
  cursor:pointer;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:78vh;
  display:flex;
  align-items:center;
  padding:90px 0 76px;
  overflow:hidden;
  isolation:isolate;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  z-index:-2;
  transform:scale(1.02);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:
    linear-gradient(100deg,rgba(6,10,20,.95) 0%,rgba(6,10,20,.84) 42%,rgba(6,10,20,.5) 72%,rgba(6,10,20,.86) 100%),
    radial-gradient(620px 420px at 82% 22%,rgba(47,211,255,.2),transparent 68%);
}
.hero-inner{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 16px;
  border-radius:999px;
  border:1px solid rgba(47,211,255,.3);
  background:rgba(47,211,255,.08);
  color:var(--cyan);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:1.2px;
  margin-bottom:22px;
}
.eyebrow .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 4px rgba(91,224,168,.18);
}
.hero h1{
  font-size:clamp(2.15rem,4.6vw,3.7rem);
  font-weight:800;
  letter-spacing:-.5px;
  line-height:1.18;
  margin-bottom:20px;
}
.hero h1 em{
  font-style:normal;
  background:var(--grad-main);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  color:var(--muted);
  max-width:560px;
  line-height:1.9;
  margin-bottom:34px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.status-bar{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.status-item{
  display:flex;
  align-items:center;
  gap:9px;
  padding:10px 18px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:var(--panel);
  font-size:13px;
  color:var(--muted);
}
.status-item b{color:var(--text);font-weight:600;font-size:13.5px;}
.status-item i{color:var(--cyan);font-size:12px;}

.hero-visual{position:relative;}
.visual-card{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:0 26px 60px rgba(0,0,0,.55);
  background:var(--panel);
}
.visual-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  opacity:.92;
}
.visual-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.05) 30%,rgba(6,10,20,.88) 100%);
}
.visual-caption{
  position:absolute;
  left:22px;right:22px;bottom:20px;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}
.visual-caption .vc-title{font-size:15px;font-weight:700;}
.visual-caption .vc-sub{font-size:12.5px;color:var(--muted);}
.float-chip{
  position:absolute;
  top:-16px;
  right:-10px;
  padding:11px 18px;
  border-radius:14px;
  background:rgba(10,16,32,.92);
  border:1px solid rgba(47,211,255,.36);
  box-shadow:0 14px 34px rgba(0,0,0,.5);
  font-size:12.5px;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:9px;
}
.float-chip i{color:var(--amber);}
.float-chip b{color:var(--text);}

/* ---------- Section base ---------- */
.section{padding:88px 0;position:relative;}
.section-tight{padding:64px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:40px;
}
.section-head .sh-left{max-width:660px;}
.section-label{
  display:inline-block;
  font-family:Inter,system-ui,sans-serif;
  font-size:11.5px;
  letter-spacing:2.4px;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:12px;
  font-weight:600;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.15rem);
  font-weight:800;
  letter-spacing:-.3px;
  margin-bottom:10px;
}
.section-head p{color:var(--muted);font-size:15px;}
.section-line{
  height:1px;
  background:linear-gradient(90deg,var(--line-strong),transparent);
  margin-bottom:44px;
}

/* ---------- Rail (horizontal library) ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;
  gap:22px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 18px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 330px;
  scroll-snap-align:start;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--panel);
  padding:14px;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.rail-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,211,255,.45);
  box-shadow:var(--shadow-hover);
}
.card-media{
  position:relative;
  border-radius:var(--radius-md);
  overflow:hidden;
  aspect-ratio:16/9;
  background:#0A1020;
}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.rail-card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,0) 42%,rgba(6,10,20,.72) 100%);
}
.media-badge{
  position:absolute;
  left:12px;top:12px;
  z-index:2;
  padding:5px 12px;
  border-radius:999px;
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.4px;
  background:rgba(6,10,20,.78);
  border:1px solid rgba(47,211,255,.42);
  color:var(--cyan);
  backdrop-filter:blur(6px);
}
.media-badge.is-amber{color:var(--amber);border-color:rgba(255,180,84,.45);}
.media-badge.is-green{color:var(--green);border-color:rgba(91,224,168,.42);}
.media-time{
  position:absolute;
  right:12px;bottom:12px;
  z-index:2;
  font-family:Inter,system-ui,sans-serif;
  font-size:11.5px;
  color:var(--text);
  background:rgba(6,10,20,.72);
  padding:4px 10px;
  border-radius:8px;
  letter-spacing:.5px;
}
.rail-card h3{
  font-size:17px;
  font-weight:700;
  margin:16px 4px 8px;
}
.rail-card p{
  font-size:13.5px;
  color:var(--muted);
  line-height:1.75;
  margin:0 4px 14px;
}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:0 4px 4px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:999px;
  font-size:11.5px;
  color:var(--muted);
  background:rgba(160,190,255,.08);
  border:1px solid var(--line);
}
.card-foot .btn-text{font-size:13px;}

.rail-nav{display:flex;gap:10px;}
.rail-btn{
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:rgba(13,21,38,.7);
  color:var(--text);
  cursor:pointer;
  transition:border-color .25s ease,color .25s ease,transform .25s ease;
}
.rail-btn:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-1px);}

/* ---------- Two column points ---------- */
.point-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.point-card{
  border-radius:var(--radius-xl);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(13,21,38,.86),rgba(9,15,30,.7));
  padding:34px 32px;
  transition:border-color .3s ease,box-shadow .3s ease,transform .3s ease;
}
.point-card:hover{
  border-color:rgba(47,211,255,.36);
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.point-icon{
  width:46px;height:46px;
  border-radius:14px;
  display:grid;place-items:center;
  background:rgba(47,211,255,.12);
  border:1px solid rgba(47,211,255,.3);
  color:var(--cyan);
  font-size:18px;
  margin-bottom:20px;
}
.point-card h3{font-size:20px;margin-bottom:10px;}
.point-card > p{color:var(--muted);font-size:14.5px;margin-bottom:22px;}
.point-list li{
  display:flex;
  gap:12px;
  padding:13px 0;
  border-top:1px solid var(--line);
  font-size:14.5px;
  color:var(--muted);
}
.point-list li:first-child{border-top:none;padding-top:0;}
.point-list li i{color:var(--cyan);font-size:13px;margin-top:7px;flex-shrink:0;}
.point-list li b{color:var(--text);font-weight:600;}

/* ---------- Steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.step-card{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--panel);
  padding:32px 28px;
  transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;
}
.step-card:hover{border-color:rgba(47,211,255,.36);transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.step-num{
  font-family:Inter,system-ui,sans-serif;
  font-size:44px;
  font-weight:800;
  line-height:1;
  letter-spacing:-2px;
  color:transparent;
  -webkit-text-stroke:1.4px rgba(47,211,255,.7);
  margin-bottom:18px;
}
.step-card h3{font-size:18px;margin-bottom:10px;}
.step-card p{font-size:14px;color:var(--muted);line-height:1.8;}

/* ---------- Status / news board ---------- */
.board{
  border-radius:var(--radius-xl);
  border:1px solid var(--line);
  background:linear-gradient(140deg,rgba(13,21,38,.9),rgba(8,13,26,.68));
  padding:14px 32px;
}
.board-row{
  display:flex;
  align-items:center;
  gap:22px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.board-row:last-child{border-bottom:none;}
.board-dot{
  width:9px;height:9px;border-radius:50%;flex-shrink:0;
  background:var(--green);
  box-shadow:0 0 0 5px rgba(91,224,168,.15);
}
.board-dot.is-amber{background:var(--amber);box-shadow:0 0 0 5px rgba(255,180,84,.15);}
.board-dot.is-cyan{background:var(--cyan);box-shadow:0 0 0 5px rgba(47,211,255,.15);}
.board-main{flex:1;min-width:0;}
.board-main h3{font-size:15.5px;font-weight:600;margin-bottom:4px;}
.board-main p{font-size:13.5px;color:var(--muted);}
.board-tag{
  flex-shrink:0;
  font-size:12px;
  color:var(--muted);
  border:1px solid var(--line);
  background:rgba(160,190,255,.06);
  border-radius:999px;
  padding:5px 13px;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:960px;margin:0 auto;}
.accordion-item{
  background:transparent;
  border:none;
  border-bottom:1px solid var(--line);
}
.accordion-item:first-of-type{border-top:1px solid var(--line);}
.accordion-button{
  background:transparent;
  color:var(--text);
  font-size:16px;
  font-weight:700;
  padding:24px 4px;
  box-shadow:none;
  border-radius:0 !important;
}
.accordion-button:not(.collapsed){
  background:transparent;
  color:var(--cyan);
  box-shadow:none;
}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  background-image:none;
  content:"\2b";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  font-size:14px;
  color:var(--cyan);
  width:auto;height:auto;
  display:grid;place-items:center;
  transition:transform .3s ease;
  transform:none;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{
  padding:0 4px 26px;
  color:var(--muted);
  font-size:15px;
  line-height:1.9;
  max-width:800px;
}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  border:1px solid rgba(47,211,255,.28);
  padding:72px 60px;
  text-align:center;
  isolation:isolate;
}
.cta-panel .cta-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  z-index:-2;
}
.cta-panel::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:
    linear-gradient(135deg,rgba(6,10,20,.94),rgba(10,22,42,.86)),
    radial-gradient(600px 320px at 50% 0%,rgba(47,211,255,.22),transparent 70%);
}
.cta-panel h2{
  font-size:clamp(1.6rem,3vw,2.4rem);
  font-weight:800;
  margin-bottom:16px;
}
.cta-panel p{
  color:var(--muted);
  font-size:16px;
  max-width:620px;
  margin:0 auto 34px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:76px 0 32px;
  position:relative;
  z-index:1;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:18px;
  font-weight:700;
  margin-bottom:18px;
}
.footer-desc{
  color:var(--muted);
  font-size:14px;
  line-height:1.85;
  max-width:380px;
  margin-bottom:24px;
}
.footer-social{display:flex;gap:12px;}
.footer-social a{
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(13,21,38,.6);
  display:grid;place-items:center;
  color:var(--muted);
  font-size:15px;
  transition:color .25s ease,border-color .25s ease,transform .25s ease;
}
.footer-social a:hover{color:var(--cyan);border-color:rgba(47,211,255,.5);transform:translateY(-2px);}
.footer-col h4{
  font-size:14.5px;
  font-weight:700;
  margin-bottom:18px;
  letter-spacing:.4px;
}
.footer-col ul li{margin-bottom:12px;font-size:13.8px;color:var(--muted);}
.footer-col ul li a{color:var(--muted);}
.footer-col ul li a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:56px;
  padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:space-between;
  align-items:center;
  color:var(--muted);
  font-size:13px;
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:22px;}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero-visual{max-width:620px;}
  .nav-links > a{padding:9px 11px;font-size:13.8px;}
}
@media (max-width:991.98px){
  .container{padding-left:20px;padding-right:20px;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-cta{display:none;}
  .nav-links{
    position:fixed;
    top:0;right:0;
    width:min(340px,86vw);
    height:100dvh;
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
    padding:100px 26px 40px;
    background:rgba(7,12,24,.98);
    border-left:1px solid var(--line);
    backdrop-filter:blur(18px);
    transform:translateX(100%);
    transition:transform .34s cubic-bezier(.4,0,.2,1);
    overflow-y:auto;
    z-index:1040;
    margin-left:0;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links > a{
    width:100%;
    font-size:17px;
    font-weight:600;
    padding:14px 0;
    border-radius:0;
    border-bottom:1px solid var(--line);
    color:var(--text);
  }
  .nav-links > a::after{display:none;}
  .nav-links > a.active{color:var(--cyan);}
  .nav-drawer-cta{
    display:inline-flex;
    justify-content:center;
    margin-top:26px;
    width:100%;
    border-bottom:none;
    font-size:15px;
  }
  .section{padding:66px 0;}
  .point-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .cta-panel{padding:56px 28px;}
  .board{padding:8px 22px;}
  .board-row{flex-wrap:wrap;gap:12px;}
}
@media (max-width:767.98px){
  .hero{min-height:auto;padding:64px 0 56px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn-main,
  .hero-actions .btn-ghost{width:100%;justify-content:center;}
  .rail-card{flex:0 0 272px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .section-head .rail-nav{display:none;}
  .point-card{padding:28px 24px;}
  .step-card{padding:28px 24px;}
  .accordion-button{font-size:15px;padding:20px 2px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .brand-text small{font-size:9.5px;letter-spacing:1.2px;}
  .rail-card{flex:0 0 84%;}
  .cta-panel{padding:46px 20px;}
  .board{padding:6px 16px;}
  .status-item{padding:9px 14px;font-size:12.5px;}
}

/* roulang page: category2 */
:root{
  --bg:#060A14;
  --bg-2:#0A1020;
  --bg-3:#040711;
  --cyan:#2FD3FF;
  --cyan-deep:#0E7FA8;
  --amber:#FFB454;
  --ok:#5BE0A8;
  --danger:#FF6B7A;
  --text:#F4F7FF;
  --muted:#9AA7BD;
  --line:rgba(160,190,255,.14);
  --line-strong:rgba(160,190,255,.26);
  --glass:rgba(13,21,38,.72);
  --glass-soft:rgba(16,25,45,.55);
  --grad:linear-gradient(135deg,#2FD3FF 0%,#3E7BFF 55%,#6A5BE8 100%);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-1:0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 16px 44px rgba(47,211,255,.18);
  --sec-pad:88px;
  --container:1320px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--cyan);}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
button{border:0;background:none;cursor:pointer;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:.2px;line-height:1.3;}

.container{
  max-width:var(--container);
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}
.section{padding:var(--sec-pad) 0;position:relative;}
.section-tight{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--cyan);font-weight:500;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);opacity:.9;}
.sec-head{margin-bottom:40px;}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);margin-bottom:12px;}
.sec-head p{color:var(--muted);max-width:740px;margin:0;font-size:15px;}
.divider-line{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--grad);
  color:#04121C !important;
  font-weight:700;
  border-radius:999px;
  padding:13px 28px;
  border:1px solid transparent;
  box-shadow:0 8px 26px rgba(47,211,255,.28);
  transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;
  white-space:nowrap;
}
.btn-main:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 14px 36px rgba(47,211,255,.4);color:#04121C !important;}
.btn-main:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.btn-sm{padding:9px 20px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:rgba(47,211,255,.06);
  color:var(--text) !important;
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:13px 26px;
  font-weight:600;
  backdrop-filter:blur(8px);
  transition:border-color .25s ease,background .25s ease,transform .25s ease;
  white-space:nowrap;
}
.btn-ghost:hover{border-color:var(--cyan);background:rgba(47,211,255,.12);transform:translateY(-1px);}
.btn-ghost:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--cyan) !important;font-weight:600;}
.btn-text i{transition:transform .25s ease;}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(47,211,255,.12);color:var(--cyan);border:1px solid rgba(47,211,255,.24);
}
.badge-amber{background:rgba(255,180,84,.12);color:var(--amber);border-color:rgba(255,180,84,.28);}
.badge-ok{background:rgba(91,224,168,.12);color:var(--ok);border-color:rgba(91,224,168,.26);}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px var(--ok);display:inline-block;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  padding:16px 0;
  background:linear-gradient(180deg,rgba(6,10,20,.92),rgba(6,10,20,.45) 70%,transparent);
  transition:background .3s ease,padding .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  padding:10px 0;
  background:var(--glass);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--grad);
  color:#04121C;font-weight:800;font-size:19px;
  box-shadow:0 8px 22px rgba(47,211,255,.32);
  font-family:Inter,system-ui,sans-serif;
}
.brand-text{display:flex;flex-direction:column;font-size:17px;font-weight:700;line-height:1.2;color:var(--text);}
.brand-text small{font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--muted);font-weight:400;margin-top:2px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links > a:not(.btn-main){
  position:relative;
  padding:9px 14px;
  font-size:14.5px;
  color:var(--muted);
  border-radius:8px;
  transition:color .25s ease,background .25s ease;
}
.nav-links > a:not(.btn-main)::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--cyan);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .3s ease;
}
.nav-links > a:not(.btn-main):hover{color:var(--text);background:rgba(160,190,255,.06);}
.nav-links > a:not(.btn-main):hover::after{transform:scaleX(1);}
.nav-links > a.active:not(.btn-main){color:var(--text);}
.nav-links > a.active:not(.btn-main)::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);
  background:rgba(13,21,38,.6);font-size:17px;
  align-items:center;justify-content:center;
}
.nav-drawer-cta{display:none;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:112px 0 0;}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);flex-wrap:wrap;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--cyan);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--text);}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  margin-top:26px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:#080D1A;
  min-height:440px;
  display:flex;align-items:flex-end;
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.cat-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,10,20,.96) 8%,rgba(6,10,20,.78) 46%,rgba(6,10,20,.42) 100%);
}
.cat-hero-glow{
  position:absolute;width:520px;height:520px;right:-120px;top:-180px;
  background:radial-gradient(circle,rgba(47,211,255,.28),transparent 66%);
  filter:blur(10px);pointer-events:none;
}
.cat-hero-inner{position:relative;z-index:2;padding:56px 48px 44px;width:100%;}
.cat-hero h1{
  font-size:clamp(2rem,4.2vw,3.35rem);
  font-weight:800;
  margin-bottom:16px;
  letter-spacing:-.4px;
}
.cat-hero h1 span{
  background:linear-gradient(135deg,#2FD3FF,#8FB6FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-hero p.lead-line{color:#CBD6EA;font-size:16px;max-width:660px;margin-bottom:28px;line-height:1.85;}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:36px;
  padding-top:24px;border-top:1px solid var(--line);
}
.hero-stats .item strong{display:block;font-size:22px;font-family:Inter,system-ui,sans-serif;font-weight:700;color:var(--cyan);}
.hero-stats .item span{font-size:12.5px;color:var(--muted);letter-spacing:.03em;}

/* ---------- 简介区：左目录 + 右内容 ---------- */
.layout-split{display:grid;grid-template-columns:300px minmax(0,1fr);gap:32px;align-items:start;}
.side-panel{
  position:sticky;top:96px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px 20px;
  backdrop-filter:blur(12px);
  box-shadow:var(--shadow-1);
}
.side-panel h3{font-size:15px;margin-bottom:6px;}
.side-panel .side-sub{font-size:12.5px;color:var(--muted);margin-bottom:16px;}
.side-nav{display:flex;flex-direction:column;gap:2px;}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:10px;font-size:14px;color:var(--muted);
  border:1px solid transparent;
  transition:all .25s ease;
}
.side-nav a i{font-size:11px;opacity:.6;transition:transform .25s ease;}
.side-nav a:hover{background:rgba(160,190,255,.06);color:var(--text);border-color:var(--line);}
.side-nav a.current{background:rgba(47,211,255,.1);color:var(--cyan);border-color:rgba(47,211,255,.28);}
.side-nav a.current i{opacity:1;}
.side-note{
  margin-top:18px;padding:14px;border-radius:var(--radius-sm);
  background:rgba(255,180,84,.07);border:1px solid rgba(255,180,84,.2);
  font-size:12.5px;color:#E4C79A;line-height:1.75;
}
.intro-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:34px;
  box-shadow:var(--shadow-1);
}
.intro-card h2{font-size:clamp(1.35rem,2.2vw,1.85rem);margin-bottom:16px;}
.intro-card p{color:#C4CFE2;font-size:15.5px;margin-bottom:16px;}
.intro-card p:last-child{margin-bottom:0;}
.intro-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:26px;}
.intro-point{
  display:flex;gap:14px;padding:18px;border-radius:var(--radius-md);
  background:rgba(10,16,32,.7);border:1px solid var(--line);
  transition:border-color .25s ease,transform .25s ease;
}
.intro-point:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.intro-point i{color:var(--cyan);font-size:17px;margin-top:4px;}
.intro-point h4{font-size:15px;margin-bottom:6px;}
.intro-point p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.75;}

/* ---------- 筛选 + 网格 ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.filter-chip{
  padding:8px 18px;border-radius:999px;font-size:13.5px;
  color:var(--muted);border:1px solid var(--line);background:rgba(13,21,38,.55);
  transition:all .25s ease;
}
.filter-chip:hover{color:var(--text);border-color:var(--line-strong);}
.filter-chip.active{color:#04121C;background:var(--grad);border-color:transparent;font-weight:700;}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.sec-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.sec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(47,211,255,.4);}
.sec-card-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.sec-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.sec-card:hover .sec-card-media img{transform:scale(1.05);}
.sec-card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,.05),rgba(6,10,20,.8));}
.sec-card-media .tag-float{position:absolute;top:14px;left:14px;z-index:2;}
.sec-card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.sec-card-body h3{font-size:18px;}
.sec-card-body p{font-size:14px;color:var(--muted);margin:0;line-height:1.78;}
.sec-card-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;}
.sec-card-foot span.mini{font-size:12.5px;color:var(--muted);}

/* ---------- 对比表 ---------- */
.table-shell{
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);
}
.table-wrap{overflow-x:auto;}
table.cmp{width:100%;border-collapse:collapse;min-width:760px;}
table.cmp thead th{
  text-align:left;font-size:13px;letter-spacing:.06em;
  color:var(--muted);font-weight:600;
  padding:18px 22px;background:rgba(10,16,32,.85);
  border-bottom:1px solid var(--line);white-space:nowrap;
}
table.cmp tbody td{
  padding:18px 22px;font-size:14px;color:#CBD6EA;
  border-bottom:1px solid var(--line);vertical-align:top;
}
table.cmp tbody tr:last-child td{border-bottom:0;}
table.cmp tbody tr:hover{background:rgba(47,211,255,.045);}
table.cmp td:first-child{color:var(--text);font-weight:600;white-space:nowrap;}
.lvl{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;}
.lvl.high{color:var(--ok);}
.lvl.mid{color:var(--amber);}
.lvl.low{color:var(--danger);}
.spec-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:28px;}
.spec-item{
  background:rgba(10,16,32,.72);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:20px;
}
.spec-item h4{font-size:14.5px;margin-bottom:8px;display:flex;align-items:center;gap:8px;}
.spec-item h4 i{color:var(--cyan);font-size:14px;}
.spec-item p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.75;}

/* ---------- 步骤 + 提示 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.step{
  position:relative;padding:26px 22px;border-radius:var(--radius-lg);
  background:linear-gradient(180deg,rgba(16,25,45,.8),rgba(10,16,32,.6));
  border:1px solid var(--line);
  transition:transform .3s ease,border-color .3s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(47,211,255,.38);}
.step .num{
  font-family:Inter,system-ui,sans-serif;font-size:30px;font-weight:800;
  color:transparent;-webkit-text-stroke:1.4px rgba(47,211,255,.55);
  display:block;line-height:1;margin-bottom:16px;
}
.step h3{font-size:16px;margin-bottom:8px;}
.step p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.78;}
.notice{
  display:flex;gap:18px;padding:24px 26px;border-radius:var(--radius-lg);
  background:rgba(255,180,84,.07);border:1px solid rgba(255,180,84,.24);
  margin-top:30px;
}
.notice i{color:var(--amber);font-size:20px;margin-top:3px;}
.notice h4{font-size:15.5px;color:#F6D6A8;margin-bottom:8px;}
.notice p{font-size:14px;color:#D9C39E;margin:0;line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion-item{
  background:transparent !important;
  border:0 !important;
  border-bottom:1px solid var(--line) !important;
}
.accordion-button{
  background:transparent !important;
  color:var(--text) !important;
  font-size:16px;font-weight:700;
  padding:22px 48px 22px 0;
  box-shadow:none !important;
  border-radius:0 !important;
}
.accordion-button:not(.collapsed){color:var(--cyan) !important;}
.accordion-button::after{
  background-image:none !important;
  content:"\f078";
  font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--muted);
  width:auto;height:auto;
  transition:transform .3s ease,color .3s ease;
  margin-left:auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--cyan);}
.accordion-button:hover{color:var(--cyan) !important;}
.accordion-body{padding:0 0 24px;font-size:15px;color:#B9C5DA;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:26px;
  padding:64px 56px;
  background:linear-gradient(135deg,rgba(47,211,255,.16),rgba(106,91,232,.14) 60%,rgba(10,16,32,.9));
  border:1px solid rgba(47,211,255,.28);
  text-align:center;
}
.cta-panel::before{
  content:"";position:absolute;width:640px;height:640px;left:50%;top:-360px;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(47,211,255,.22),transparent 64%);
  pointer-events:none;
}
.cta-panel h2{font-size:clamp(1.6rem,2.8vw,2.3rem);margin-bottom:14px;position:relative;}
.cta-panel p{color:#C6D2E6;max-width:660px;margin:0 auto 30px;font-size:15.5px;position:relative;}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-3);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:20px;
}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:19px;font-weight:700;margin-bottom:16px;}
.footer-desc{font-size:14px;color:var(--muted);line-height:1.85;max-width:360px;}
.footer-social{display:flex;gap:10px;margin-top:22px;}
.footer-social a{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--muted);font-size:15px;
  background:rgba(13,21,38,.6);
  transition:all .25s ease;
}
.footer-social a:hover{color:var(--cyan);border-color:rgba(47,211,255,.45);transform:translateY(-3px);}
.footer-col h4{font-size:14.5px;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul li a,.footer-col ul li span{font-size:13.5px;color:var(--muted);line-height:1.7;}
.footer-col ul li a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:56px;padding:22px 0;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--muted);
}
.footer-bottom .links{display:flex;gap:22px;flex-wrap:wrap;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-pad:76px;}
  .layout-split{grid-template-columns:260px minmax(0,1fr);gap:26px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991px){
  :root{--sec-pad:64px;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    background:rgba(7,12,24,.98);
    backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:96px 24px 32px;
    transform:translateX(105%);
    transition:transform .38s cubic-bezier(.4,0,.2,1);
    z-index:1040;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links > a:not(.btn-main){
    font-size:16px;padding:14px 12px;border-radius:12px;color:var(--text);
  }
  .nav-links > a:not(.btn-main)::after{display:none;}
  .nav-links > a.active:not(.btn-main){background:rgba(47,211,255,.1);color:var(--cyan);}
  .nav-drawer-cta{display:inline-flex;margin-top:20px;}
  .crumb-bar{padding-top:100px;}
  .layout-split{grid-template-columns:minmax(0,1fr);}
  .side-panel{position:static;}
  .side-nav{flex-direction:row;flex-wrap:wrap;}
  .side-nav a{flex:1 1 auto;justify-content:center;}
  .side-nav a i{display:none;}
  .intro-points{grid-template-columns:minmax(0,1fr);}
  .spec-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-panel{padding:52px 32px;}
}
@media (max-width:767px){
  :root{--sec-pad:56px;}
  .container{padding-left:16px;padding-right:16px;}
  .cat-hero-inner{padding:40px 24px 32px;}
  .cat-hero{min-height:0;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .intro-card{padding:24px;}
  .hero-stats{gap:24px;}
  .hero-stats .item strong{font-size:19px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .steps{grid-template-columns:minmax(0,1fr);}
  .spec-list{grid-template-columns:minmax(0,1fr);}
  .brand-text{font-size:15px;}
  .brand-text small{letter-spacing:.16em;}
  .btn-main,.btn-ghost{width:100%;}
  .hero-btns .btn-main,.hero-btns .btn-ghost{width:100%;}
  .cta-panel{padding:40px 20px;border-radius:20px;}
  .notice{flex-direction:column;gap:10px;}
}

/* roulang page: category3 */
:root{
  --bg:#060A14;
  --bg-2:#0A1020;
  --bg-footer:#040711;
  --primary:#2FD3FF;
  --accent:#FFB454;
  --success:#5BE0A8;
  --danger:#FF6B7A;
  --text:#F4F7FF;
  --muted:#9AA7BD;
  --line:rgba(160,190,255,.14);
  --glass:rgba(13,21,38,.72);
  --grad:linear-gradient(135deg,#2FD3FF 0%,#5B7BFF 55%,#8B6BFF 100%);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-hover:0 16px 44px rgba(47,211,255,.18);
  --space-section:88px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.2px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:1320px;padding-left:24px;padding-right:24px;margin:0 auto;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  padding:18px 0;
  background:rgba(6,10,20,.28);
  backdrop-filter:blur(0px);
  border-bottom:1px solid transparent;
  transition:background .3s ease,padding .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  padding:10px 0;
  background:var(--glass);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.05rem;letter-spacing:.4px;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--grad);
  color:#04121c;
  font-weight:800;
  font-size:1.1rem;
  box-shadow:0 6px 20px rgba(47,211,255,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text small{font-size:.62rem;font-weight:400;color:var(--muted);letter-spacing:1.4px;text-transform:uppercase;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links > a{
  position:relative;
  padding:8px 14px;
  font-size:.94rem;
  color:var(--muted);
  border-radius:999px;
  transition:color .25s ease,background .25s ease;
}
.nav-links > a:hover{color:var(--text);background:rgba(47,211,255,.08);}
.nav-links > a.active{color:var(--text);}
.nav-links > a.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(47,211,255,.7);
}
.nav-right{display:flex;align-items:center;gap:12px;}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;
  border:0;
  border-radius:999px;
  background:var(--grad);
  color:#04121c;
  font-weight:700;
  font-size:.95rem;
  letter-spacing:.3px;
  box-shadow:0 8px 26px rgba(47,211,255,.28);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
  cursor:pointer;
}
.btn-main:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 14px 34px rgba(47,211,255,.4);color:#04121c;}
.btn-main.btn-sm{padding:9px 18px;font-size:.88rem;}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(13,21,38,.55);
  color:var(--text);
  font-weight:600;
  font-size:.95rem;
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.btn-ghost:hover{transform:translateY(-1px);border-color:rgba(47,211,255,.55);background:rgba(47,211,255,.1);color:var(--text);}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary);
  font-weight:600;
  font-size:.92rem;
}
.btn-text i{transition:transform .22s ease;}
.btn-text:hover i{transform:translateX(4px);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(13,21,38,.6);
  color:var(--text);
  font-size:1.05rem;
  cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(47,211,255,.5);color:var(--primary);}
.nav-drawer-cta{display:none;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:180px 0 96px;
  overflow:hidden;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  isolation:isolate;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(900px 480px at 12% 8%,rgba(47,211,255,.22),transparent 62%),
    radial-gradient(760px 420px at 88% 30%,rgba(139,107,255,.18),transparent 66%),
    linear-gradient(180deg,rgba(6,10,20,.72) 0%,rgba(6,10,20,.9) 62%,var(--bg) 100%);
  z-index:-1;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.82rem;color:var(--muted);margin-bottom:20px;}
.crumbs a:hover{color:var(--primary);}
.crumbs span.dot{opacity:.5;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(47,211,255,.35);
  background:rgba(47,211,255,.08);
  color:var(--primary);
  font-size:.78rem;
  letter-spacing:1.6px;
  margin-bottom:22px;
}
.hero-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent);}
.page-hero h1{
  font-size:clamp(2.25rem,5vw,4rem);
  font-weight:800;
  letter-spacing:1px;
  margin-bottom:20px;
}
.page-hero h1 em{
  font-style:normal;
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{max-width:620px;color:#CBD5EA;font-size:1.06rem;line-height:1.9;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px;
}
.stat-pill{
  display:flex;align-items:center;gap:12px;
  padding:12px 18px;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:rgba(13,21,38,.6);
  backdrop-filter:blur(10px);
}
.stat-pill strong{font-family:Inter,system-ui,sans-serif;font-size:1.15rem;color:var(--primary);}
.stat-pill span{font-size:.82rem;color:var(--muted);}

/* ---------- sections ---------- */
.section{padding:var(--space-section) 0;}
.section-alt{background:var(--bg-2);}
.section-head{margin-bottom:44px;max-width:760px;}
.section-tag{
  display:inline-block;
  padding:5px 13px;
  border-radius:999px;
  background:rgba(47,211,255,.1);
  border:1px solid rgba(47,211,255,.28);
  color:var(--primary);
  font-size:.74rem;
  letter-spacing:1.8px;
  margin-bottom:16px;
}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:.98rem;line-height:1.9;}

/* ---------- featured ---------- */
.featured-card{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:0;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow);
  transition:box-shadow .3s ease,border-color .3s ease;
}
.featured-card:hover{box-shadow:var(--shadow-hover);border-color:rgba(47,211,255,.32);}
.featured-media{position:relative;min-height:420px;}
.featured-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .5s ease;}
.featured-card:hover .featured-media img{transform:scale(1.04);}
.featured-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(6,10,20,.15) 0%,rgba(6,10,20,.62) 100%);
}
.badge-live{
  position:absolute;left:20px;top:20px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,180,84,.14);
  border:1px solid rgba(255,180,84,.45);
  color:var(--accent);
  font-size:.76rem;
  letter-spacing:.6px;
}
.badge-live i{font-size:.5rem;}
.featured-body{padding:44px 40px;display:flex;flex-direction:column;justify-content:center;}
.featured-body h3{font-size:1.45rem;margin-bottom:16px;}
.featured-body p{color:var(--muted);font-size:.95rem;line-height:1.9;}
.featured-list{margin:22px 0 28px;display:grid;gap:12px;}
.featured-list li{display:flex;gap:12px;font-size:.92rem;color:#C7D2E8;}
.featured-list i{color:var(--primary);margin-top:7px;font-size:.72rem;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;}
.tag{
  padding:4px 12px;
  border-radius:999px;
  background:rgba(160,190,255,.08);
  border:1px solid var(--line);
  color:var(--muted);
  font-size:.76rem;
}
.tag.tag-cyan{background:rgba(47,211,255,.12);border-color:rgba(47,211,255,.32);color:var(--primary);}
.tag.tag-green{background:rgba(91,224,168,.1);border-color:rgba(91,224,168,.32);color:var(--success);}

/* ---------- dual cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.info-card{
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  display:flex;flex-direction:column;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(47,211,255,.32);}
.info-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.info-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.info-card:hover .thumb img{transform:scale(1.05);}
.info-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,0) 40%,rgba(6,10,20,.78) 100%);}
.info-card .thumb .badge-flat{
  position:absolute;left:16px;top:16px;z-index:2;
  padding:5px 12px;border-radius:999px;
  background:rgba(6,10,20,.68);
  border:1px solid var(--line);
  font-size:.74rem;color:var(--text);
  backdrop-filter:blur(8px);
}
.info-card .body{padding:26px 26px 28px;}
.info-card h3{font-size:1.12rem;margin-bottom:12px;}
.info-card p{color:var(--muted);font-size:.92rem;line-height:1.85;}
.info-card .meta{margin-top:18px;display:flex;gap:16px;flex-wrap:wrap;font-size:.78rem;color:var(--muted);}
.info-card .meta i{color:var(--primary);margin-right:6px;}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:12px;padding-left:8px;}
.timeline::before{
  content:"";position:absolute;left:23px;top:12px;bottom:12px;width:1px;
  background:linear-gradient(180deg,rgba(47,211,255,.6),rgba(160,190,255,.06));
}
.tl-item{position:relative;display:grid;grid-template-columns:48px 1fr;gap:22px;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-num{
  width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(13,21,38,.9);
  border:1px solid rgba(47,211,255,.4);
  color:var(--primary);
  font-family:Inter,system-ui,sans-serif;
  font-weight:700;
  box-shadow:0 0 0 6px rgba(6,10,20,.9);
  position:relative;z-index:1;
}
.tl-body h3{font-size:1.08rem;margin-bottom:10px;}
.tl-body p{color:var(--muted);font-size:.93rem;line-height:1.88;}
.tl-body .tag-row{margin:14px 0 0;}

/* ---------- notice ---------- */
.notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.notice-item{
  padding:26px 24px;
  border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:rgba(13,21,38,.5);
  transition:border-color .3s ease,background .3s ease,transform .3s ease;
}
.notice-item:hover{border-color:rgba(255,180,84,.36);background:rgba(255,180,84,.05);transform:translateY(-3px);}
.notice-item i{font-size:1.25rem;color:var(--accent);margin-bottom:14px;display:block;}
.notice-item h3{font-size:1rem;margin-bottom:10px;}
.notice-item p{color:var(--muted);font-size:.9rem;line-height:1.85;}

/* ---------- faq ---------- */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  background:none;border:0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:24px 4px;
  color:var(--text);
  font-size:1rem;
  font-weight:700;
  text-align:left;
  cursor:pointer;
  transition:color .25s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-q i{color:var(--primary);font-size:.85rem;transition:transform .3s ease;flex:0 0 auto;}
.faq-q[aria-expanded="true"] i{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .35s ease,padding .35s ease;
}
.faq-a.open{max-height:420px;padding-bottom:24px;}
.faq-a p{color:var(--muted);font-size:.94rem;line-height:1.9;padding-right:32px;}

/* ---------- login form ---------- */
.login-panel{
  display:grid;grid-template-columns:1.05fr 1fr;gap:0;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow);
}
.login-copy{padding:48px 44px;}
.login-copy h2{font-size:clamp(1.5rem,2.4vw,2rem);margin-bottom:16px;}
.login-copy p{color:var(--muted);font-size:.95rem;line-height:1.9;}
.login-copy .mini-list{margin-top:24px;display:grid;gap:12px;}
.login-copy .mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;color:#C7D2E8;}
.login-copy .mini-list i{color:var(--success);margin-top:6px;font-size:.75rem;}
.login-form{padding:44px;background:rgba(4,7,17,.55);border-left:1px solid var(--line);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:8px;letter-spacing:.4px;}
.field input{
  width:100%;
  padding:13px 16px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:rgba(6,10,20,.85);
  color:var(--text);
  font-size:.95rem;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.field input::placeholder{color:#5D6A80;}
.field input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(47,211,255,.14);
}
.form-hint{font-size:.78rem;color:var(--muted);margin-top:16px;line-height:1.7;}
.form-hint i{color:var(--primary);margin-right:6px;}

/* ---------- cta strip ---------- */
.cta-strip{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:60px 48px;
  text-align:center;
}
.cta-strip::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(6,10,20,.9) 0%,rgba(10,16,32,.86) 50%,rgba(47,211,255,.16) 100%);
}
.cta-strip > *{position:relative;z-index:1;}
.cta-strip h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:14px;}
.cta-strip p{color:#C7D2E8;max-width:640px;margin:0 auto 28px;font-size:.96rem;}
.cta-strip .hero-actions{justify-content:center;margin-bottom:0;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-footer);
  border-top:1px solid var(--line);
  padding:72px 0 28px;
  margin-top:0;
}
.footer-brand{display:flex;align-items:center;gap:12px;font-size:1.08rem;font-weight:800;margin-bottom:16px;}
.footer-desc{color:var(--muted);font-size:.9rem;line-height:1.9;max-width:360px;}
.footer-social{display:flex;gap:10px;margin-top:22px;}
.footer-social a{
  width:40px;height:40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  color:var(--muted);
  transition:all .25s ease;
}
.footer-social a:hover{color:var(--primary);border-color:rgba(47,211,255,.5);background:rgba(47,211,255,.08);transform:translateY(-2px);}
.footer-col h4{font-size:.95rem;margin-bottom:18px;letter-spacing:.5px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a,.footer-col span{color:var(--muted);font-size:.88rem;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  color:#6C7A91;font-size:.8rem;
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{max-width:100%;}
  .featured-card{grid-template-columns:1fr;}
  .featured-media{min-height:320px;}
}
@media (max-width:991px){
  :root{--space-section:72px;}
  .nav-links{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(320px,86vw);
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:96px 24px 120px;
    background:rgba(8,13,26,.97);
    backdrop-filter:blur(20px);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .34s cubic-bezier(.4,0,.2,1);
    overflow-y:auto;
    z-index:1100;
  }
  .nav-links.open{transform:translateX(0);}
  .nav-links > a{
    padding:14px 12px;
    font-size:1.05rem;
    border-radius:12px;
    color:var(--text);
    border-bottom:1px solid var(--line);
  }
  .nav-links > a.active::after{display:none;}
  .nav-links > a.active{color:var(--primary);}
  .nav-drawer-cta{
    display:inline-flex;
    justify-content:center;
    margin-top:26px;
    width:100%;
  }
  .nav-cta{display:none;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .card-grid{grid-template-columns:1fr;}
  .notice-grid{grid-template-columns:1fr;}
  .login-panel{grid-template-columns:1fr;}
  .login-form{border-left:0;border-top:1px solid var(--line);}
  .page-hero{padding:150px 0 76px;}
}
@media (max-width:767px){
  :root{--space-section:60px;}
  .container{padding-left:16px;padding-right:16px;}
  .brand-text{font-size:.98rem;}
  .hero-sub{font-size:.98rem;}
  .featured-body{padding:32px 24px;}
  .login-copy,.login-form{padding:32px 22px;}
  .cta-strip{padding:44px 22px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;justify-content:center;}
}
@media (max-width:520px){
  .page-hero h1{font-size:2.1rem;letter-spacing:.4px;}
  .stat-pill{padding:10px 14px;}
  .info-card .body{padding:22px 20px 24px;}
  .tl-item{grid-template-columns:40px 1fr;gap:16px;}
  .tl-num{width:40px;height:40px;font-size:.9rem;}
  .timeline::before{left:19px;}
}