/* roulang page: index */
:root{
  --primary:#0A3FD6;
  --primary-light:#176BFF;
  --accent:#34E2FF;
  --success:#2EE59E;
  --bg:#060B14;
  --bg-alt:#0A1322;
  --glass:rgba(15,23,42,.62);
  --line:rgba(151,176,220,.20);
  --line-strong:rgba(151,176,220,.36);
  --line-hover:rgba(120,180,255,.45);
  --text-main:#EDF3FF;
  --text-body:#C3CFE3;
  --text-sub:#B7C7E1;
  --text-mute:#7E93B6;
  --error:#E58A8A;
  --font:"PingFang SC","HarmonicOS Sans SC","Microsoft YaHei UI","Source Han Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
  --radius-card:12px;
  --radius-image:16px;
  --radius-btn:8px;
  --radius-tag:4px;
  --shadow-card:0 12px 34px rgba(0,0,0,.28);
  --shadow-float:0 20px 50px rgba(0,0,0,.42);
  --container:1200px;
  --section-space:96px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text-main);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:0;background:none;cursor:pointer;font-size:16px}
input,select,textarea{font-family:inherit;font-size:16px}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:var(--section-space) 0}
.section.soft{background:rgba(10,19,34,.5);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:46px;display:flex;flex-direction:column;gap:10px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--accent);font-size:13px;letter-spacing:1px;text-transform:uppercase}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent)}
.section-title{font-size:28px;font-weight:650;line-height:1.35;letter-spacing:.8px;color:var(--text-main)}
.section-desc{color:var(--text-sub);max-width:720px;font-size:15.5px}
.grid-x{display:flex;flex-wrap:wrap}
.grid-margin-x{margin-left:-.625rem;margin-right:-.625rem}
.grid-margin-x>.cell{padding-left:.625rem;padding-right:.625rem;margin-bottom:1rem}
.cell{flex:0 0 auto;min-height:0;width:100%}
.small-12{width:100%}
@media(min-width:640px){.medium-6{width:50%}}
@media(min-width:1024px){.large-5{width:41.66667%}.large-6{width:50%}.large-7{width:58.33333%}.large-4{width:33.33333%}}

/* navigation */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  height:72px;
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.nav-bar{max-width:var(--container);height:72px;margin:0 auto;padding-left:24px;padding-right:24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:8px;font-size:23px;font-weight:700;color:var(--text-main);letter-spacing:.5px;white-space:nowrap}
.brand::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 14px rgba(52,226,255,.72)}
.site-nav{display:flex;align-items:center;gap:34px}
.nav-link{position:relative;display:block;padding:10px 2px;font-size:15px;color:var(--text-sub);transition:color .22s ease,opacity .22s ease}
.nav-link:hover{color:var(--text-main)}
.nav-link.active{color:var(--text-main);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:24px;height:4px;border-radius:4px;background:var(--accent)}
.nav-link.active::after{width:min(48px,80%);border-radius:4px;left:0;transform:none}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);border-radius:var(--radius-btn);background:rgba(15,23,42,.5)}
.nav-toggle span{width:22px;height:2px;background:var(--text-main);transition:transform .24s,opacity .24s}
.nav-toggle.is-active span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 28px;border-radius:var(--radius-btn);font-size:15.5px;font-weight:600;letter-spacing:.4px;transition:box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;text-align:center;line-height:1.2}
.btn-primary{background:var(--primary);color:#fff;border:1px solid rgba(102,170,255,.35);box-shadow:0 0 24px rgba(23,107,255,.45)}
.btn-primary:hover{background:var(--primary-light);box-shadow:0 0 32px rgba(23,107,255,.6);transform:translateY(-1px)}
.btn-line{color:var(--text-main);border:1px solid rgba(255,255,255,.34);background:rgba(15,23,42,.35);backdrop-filter:blur(6px)}
.btn-line:hover{border-color:rgba(255,255,255,.6);background:rgba(23,107,255,.14)}
.btn-lg{min-height:52px;padding:0 36px}
.btn svg{width:15px;height:15px;flex:none}

/* hero */
.hero{position:relative;overflow:hidden;padding:84px 0 70px;background:radial-gradient(800px 300px at 80% -10%,rgba(23,107,255,.18),transparent 70%),var(--bg)}
.hero-copy{z-index:2;padding-right:12px}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:2px;color:var(--accent);border:1px solid rgba(52,226,255,.3);padding:8px 14px;border-radius:40px;background:rgba(52,226,255,.06)}
.hero h1{font-size:40px;line-height:1.3;font-weight:700;letter-spacing:1.4px;margin:26px 0 22px;color:var(--text-main)}
.hero .lead{font-size:16.5px;line-height:1.95;color:var(--text-body);max-width:520px;margin-bottom:32px}
.hero-btns{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:30px}
.hero-note{color:var(--text-mute);font-size:13.5px;display:flex;align-items:center;gap:8px}
.hero-note::before{content:"●";color:var(--success);font-size:11px}
.hero-visual{position:relative;border-radius:var(--radius-image);overflow:hidden;border:1px solid rgba(151,176,220,.18);box-shadow:var(--shadow-float);min-height:420px}
.hero-visual img{width:100%;height:460px;object-fit:cover}
.hero-glass{position:absolute;right:20px;left:20px;bottom:20px;background:rgba(15,23,42,.74);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.16);border-radius:16px;padding:20px 24px}
.hero-glass h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--text-main);margin-bottom:6px}
.hero-glass p{font-size:13.5px;color:var(--text-sub);line-height:1.8}
.hero-glass .hero-glass-date{display:flex;align-items:center;gap:10px;color:var(--accent);font-size:14px;margin-bottom:8px;font-variant-numeric:tabular-nums}

/* info strip */
.info-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(10,19,34,.36)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);margin:0}
.stat{padding:30px 34px;text-align:left;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat .stat-num{font-size:30px;font-weight:650;color:var(--text-main);font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:.5px}
.stat .stat-num i{font-style:normal;color:var(--accent);font-size:24px;margin-left:3px}
.stat .stat-label{margin-top:8px;font-size:14px;color:var(--text-mute);letter-spacing:.4px}

/* timeline */
.timeline-wrap{position:relative;padding:16px 0 8px}
.timeline-wrap::before{content:"";position:absolute;left:calc(50% - 1px);top:0;bottom:0;width:2px;background:linear-gradient(to bottom,rgba(52,226,255,.2),rgba(52,226,255,.55),rgba(52,226,255,.2))}
.tl-row{position:relative;width:50%;padding-right:56px;margin-bottom:38px}
.tl-row:nth-child(even){margin-left:50%;padding-right:0;padding-left:56px}
.tl-row:last-child{margin-bottom:0}
.tl-row::after{content:"";position:absolute;top:18px;right:-6px;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(52,226,255,.15),0 0 18px rgba(52,226,255,.8)}
.tl-row:nth-child(even)::after{right:auto;left:-6px}
.tl-time{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:13px;font-variant-numeric:tabular-nums;background:rgba(52,226,255,.06);border:1px solid rgba(52,226,255,.2);padding:4px 12px;border-radius:40px;margin-bottom:14px}
.tl-card{padding:0 0 0 24px;border-left:2px solid rgba(52,226,255,.55)}
.tl-card h3{font-size:20px;font-weight:650;line-height:1.45;color:var(--text-main);margin-bottom:8px}
.tl-card p{font-size:14px;color:var(--text-body);line-height:1.85;max-width:430px}
.tl-loc{display:inline-flex;align-items:center;gap:8px;color:var(--text-mute);font-size:13px;margin-top:12px}
.tl-loc::before{content:"";width:8px;height:8px;border-radius:50%;border:1px solid var(--text-mute)}

/* speakers section */
.speakers-col .section-small-title{font-size:14px;color:var(--accent);letter-spacing:1px;margin-bottom:22px}
.speaker-list{display:flex;flex-direction:column;gap:14px}
.speaker-card{display:flex;align-items:center;gap:18px;background:rgba(15,23,42,.56);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px 22px;transition:border-color .25s,background .25s}
.speaker-card:hover{border-color:var(--line-hover);background:rgba(23,42,74,.46)}
.speaker-avatar{width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;color:var(--accent);background:linear-gradient(140deg,#102a5b,#143b6e);border:1px solid rgba(120,180,255,.36);flex:none}
.speaker-meta strong{display:block;font-size:17px;font-weight:650;color:var(--text-main);line-height:1.4}
.speaker-meta span{display:block;margin-top:4px;font-size:13.5px;color:var(--text-mute);line-height:1.5}
.highlight-panel{background:rgba(15,23,42,.48);border:1px solid var(--line);border-radius:var(--radius-image);padding:30px 30px 8px;height:100%}
.highlight-panel .eyebrow{margin-bottom:18px}
.highlight-list{padding-top:4px}
.highlight-item{display:grid;grid-template-columns:32px 1fr;gap:14px;padding:18px 0;border-bottom:1px solid rgba(151,176,220,.14)}
.highlight-item:last-child{border-bottom:0}
.hm-icon{width:28px;height:28px;color:var(--accent)}
.highlight-item h4{font-size:16px;font-weight:650;color:var(--text-main);line-height:1.5;margin-bottom:4px}
.highlight-item p{font-size:13.5px;color:var(--text-body);line-height:1.75}

/* media scene */
.media-scene{gap:24px}
.media-card{position:relative;border-radius:var(--radius-image);overflow:hidden;border:1px solid var(--line);background:var(--bg-alt);box-shadow:var(--shadow-card)}
.media-card img{width:100%;height:318px;object-fit:cover;transition:transform .5s ease}
.media-card:hover img{transform:scale(1.02)}
.media-caption{display:flex;align-items:center;gap:12px;padding:18px 22px;border-top:1px solid var(--line);background:rgba(15,23,42,.62)}
.media-caption i{color:var(--accent);font-size:16px}
.media-caption span{font-size:14.5px;color:var(--text-sub);line-height:1.5}

/* pricing */
.ticket-section{background:radial-gradient(600px 220px at 50% 0%,rgba(23,107,255,.10),transparent 70%),var(--bg)}
.ticket-card{height:100%;display:flex;flex-direction:column;background:rgba(15,23,42,.54);border:1px solid var(--line);border-radius:20px;padding:34px 30px 30px;transition:border-color .25s,transform .25s,box-shadow .25s;position:relative}
.ticket-card:hover{border-color:var(--line-hover);transform:translateY(-4px);box-shadow:var(--shadow-card)}
.ticket-card.is-featured{border-color:rgba(52,226,255,.7);background:rgba(16,31,56,.82);box-shadow:0 0 0 1px rgba(52,226,255,.4),0 22px 56px rgba(52,226,255,.15)}
.ticket-badge{display:inline-block;background:rgba(52,226,255,.14);color:var(--accent);font-size:12.5px;padding:4px 14px;border-radius:40px;border:1px solid rgba(52,226,255,.3);letter-spacing:.8px;width:max-content;margin-bottom:16px}
.ticket-name{font-size:18px;color:var(--text-sub);font-weight:600}
.ticket-price{display:flex;align-items:flex-end;gap:6px;margin:14px 0 22px}
.ticket-price .symbol{font-size:18px;color:var(--accent);padding-bottom:8px}
.ticket-price .amount{font-size:48px;font-weight:700;line-height:1;color:var(--text-main);letter-spacing:-1px;font-variant-numeric:tabular-nums}
.ticket-price .unit{font-size:14px;color:var(--text-mute);padding-bottom:10px}
.ticket-list{flex:1;margin:0 0 26px;display:flex;flex-direction:column;gap:12px}
.ticket-list li{position:relative;padding-left:0;color:var(--text-body);font-size:14.5px;line-height:1.75;display:flex;gap:12px}
.ticket-list li::before{content:"✓";flex:none;color:var(--accent);font-weight:700;font-size:14px}
.ticket-card .btn{width:100%;margin-top:auto}

/* news */
.news-grid{margin-top:8px}
.news-cell{margin-bottom:20px}
.news-card{border:1px solid var(--line);border-radius:var(--radius-card);background:rgba(15,23,42,.52);padding:26px 28px;height:100%;display:flex;flex-direction:column;transition:border-color .25s,background .25s,box-shadow .25s}
.news-card:hover{border-color:var(--line-hover);background:rgba(20,34,62,.55);box-shadow:var(--shadow-card)}
.news-meta{display:flex;align-items:center;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.tag{display:inline-block;background:rgba(23,107,255,.12);color:var(--text-sub);border:1px solid rgba(23,107,255,.3);border-radius:var(--radius-tag);font-size:12px;padding:4px 10px;letter-spacing:.5px}
.news-date{color:var(--text-mute);font-size:13px;font-variant-numeric:tabular-nums}
.news-title{font-size:19px;font-weight:650;color:var(--text-main);line-height:1.5;margin-bottom:8px}
.news-summary{font-size:14.5px;color:var(--text-body);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:20px;-webkit-box-pack:end}
.news-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:14px;margin-top:auto;transition:gap .2s}
.news-link:hover{gap:13px}
.news-empty{text-align:center;padding:80px 20px;color:var(--text-mute);border:1px dashed rgba(151,176,220,.18);border-radius:var(--radius-image);background:transparent}
.empty-icon{width:66px;height:66px;border-radius:50%;border:1px solid rgba(151,176,220,.22);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;color:var(--accent);font-size:26px;background:rgba(15,23,42,.35)}
.news-empty p{color:var(--text-body);font-size:15px}
.news-empty .muted{font-size:13px;color:var(--text-mute);margin-top:6px}

/* FAQ */
.faq-list{border-top:1px solid var(--line);max-width:880px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:24px 0;text-align:left;font-size:17px;font-weight:600;color:var(--text-main);line-height:1.6;transition:color .2s}
.faq-q:hover{color:var(--accent)}
.faq-q::after{content:"+";flex:none;color:var(--accent);font-size:26px;font-weight:300;line-height:24px;transition:transform .25s}
.faq-item.open .faq-q{color:var(--accent)}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 0 22px;color:var(--text-body);font-size:15px;line-height:1.95;max-width:760px}
.faq-more{margin-top:32px;font-size:14px;color:var(--text-mute)}
.faq-more a{color:var(--accent);border-bottom:1px solid transparent}
.faq-more a:hover{border-bottom-color:var(--accent)}

/* CTA */
.cta-section{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:110px 0;position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(52,226,255,.18) 1px,transparent 1px);background-size:28px 28px;background-position:center top;opacity:.7}
.cta-grid{position:relative;z-index:1}
.cta-title{font-size:30px;font-weight:700;line-height:1.35;letter-spacing:1px;color:var(--text-main)}
.cta-title span{color:var(--accent)}
.cta-desc{font-size:16px;line-height:1.95;color:var(--text-body);margin:18px 0 0;max-width:560px}
.apply-wrap{position:relative;z-index:1;margin-top:48px;padding:34px;border-radius:var(--radius-image);border:1px solid var(--line);background:rgba(15,23,42,.6);backdrop-filter:blur(8px)}
.form-row{display:grid;grid-template-columns:1fr 1fr 1.2fr auto;gap:14px;align-items:end}
.field{width:100%;min-height:48px;border:1px solid var(--line);background:rgba(6,11,20,.62);color:var(--text-main);border-radius:var(--radius-btn);padding:0 16px;outline:none;transition:border-color .2s,box-shadow .2s;appearance:none;-webkit-appearance:none}
select.field{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237E93B6' d='M6 8L0 0h12L6 8z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px;cursor:pointer}
.field:focus{border-color:#6AAFFF;box-shadow:0 0 0 4px rgba(23,107,255,.18)}
.field::placeholder{color:var(--text-mute);opacity:1}
.field option{background:var(--bg-alt);color:var(--text-main)}
.form-note{margin-top:18px;font-size:13.5px;color:var(--text-mute)}
.form-alert{margin-top:20px;padding:16px 20px;background:rgba(46,229,158,.08);border:1px solid rgba(46,229,158,.35);border-radius:var(--radius-btn);color:#B7F5D9;font-size:14.5px;display:none}
.form-alert.show{display:block;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* footer */
.site-footer{border-top:1px solid var(--line);background:rgba(10,19,34,.3);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:50px;padding-bottom:56px}
.footer-brand{font-size:23px;font-weight:700;color:var(--text-main);letter-spacing:.4px}
.footer-brand::before{content:"";display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--accent);margin-right:9px;box-shadow:0 0 12px rgba(52,226,255,.6)}
.footer-desc{margin-top:18px;color:var(--text-mute);font-size:13.5px;line-height:1.95;max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-main);letter-spacing:.6px;margin-bottom:18px}
.footer-col a{display:block;color:var(--text-mute);font-size:13.5px;line-height:1.5;padding:6px 0;transition:color .2s}
.footer-col a:hover{color:var(--text-main)}
.footer-contact p{display:flex;align-items:center;gap:10px;color:var(--text-mute);font-size:13.5px;padding:5px 0}
.footer-contact i{width:18px;color:var(--accent);font-size:15px;text-align:center}
.footer-bottom{border-top:1px solid var(--line);padding:24px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--text-mute);font-size:13px}
.footer-bottom span{font-variant-numeric:tabular-nums}

/* responsiveness */
@media (max-width:1024px){
  .form-row{grid-template-columns:1fr 1fr}
  .cta-title{font-size:27px}
}
@media(max-width:768px){
  :root{--section-space:72px}
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:72px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 18px;background:rgba(6,11,20,.96);border-bottom:1px solid var(--line)}
  .site-nav.is-open{display:flex}
  .nav-link{display:block;line-height:48px;padding:0 6px;border-bottom:1px solid rgba(151,176,220,.08)}
  .nav-link.active::after{display:none}
  .nav-link.active,.nav-link:hover{color:var(--accent)}
  .hero{padding:60px 0 56px}
  .hero h1{font-size:32px}
  .hero-visual{margin-top:32px;min-height:320px}
  .hero-visual img{height:360px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .section-title{font-size:25px}
  .timeline-wrap::before{left:9px}
  .tl-row,.tl-row:nth-child(even){width:100%;padding:0 0 0 36px;margin:0 0 30px}
  .tl-row::after,.tl-row:nth-child(even)::after{left:5px;right:auto;width:9px;height:9px}
  .tl-card h3{font-size:18px}
  .speakers-col + .speakers-col{margin-top:36px}
  .highlight-panel{margin-top:12px}
  .ticket-card{margin-bottom:20px}
  .cta-section{padding:72px 0}
}
@media(max-width:640px){
  .form-row{grid-template-columns:1fr}
  .form-row .btn,.form-row .field{width:100%}
  .form-row .btn{margin-top:4px}
}
@media(max-width:520px){
  .container{padding-left:18px;padding-right:18px}
  .hero h1{font-size:28px;letter-spacing:1px}
  .hero-btns{flex-direction:column;align-items:stretch}
  .hero-btns .btn{width:100%}
  .section{padding:60px 0}
  .stats{grid-template-columns:1fr}
  .stat,.stat:nth-child(2){border-right:0;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-bottom{flex-direction:column}
  .btn.btn-lg{font-size:15px}
  .apply-wrap{padding:24px 20px}
}

/* roulang page: article */
:root{
    --color-bg:#060B14;
    --color-surface:#0A1322;
    --color-glass:rgba(15,23,42,0.62);
    --color-glass-strong:rgba(13,20,35,0.86);
    --color-border:rgba(151,176,220,0.20);
    --color-border-strong:rgba(120,180,255,0.45);
    --color-primary:#0A3FD6;
    --color-primary-high:#176BFF;
    --color-cyan:#34E2FF;
    --color-success:#2EE59E;
    --color-text:#EDF3FF;
    --color-body:#C3CFE3;
    --color-sub:#B7C7E1;
    --color-weak:#7E93B6;
    --radius-lg:16px;
    --radius-md:12px;
    --radius-sm:8px;
    --radius-tag:4px;
    --max-width:1200px;
    --font-main:"PingFang SC","HarmonicOS Sans SC","Microsoft YaHei UI","Source Han Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    background:var(--color-bg);
    color:var(--color-body);
    font-family:var(--font-main);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--color-primary-high);text-decoration:none;transition:color .25s ease}
a:hover{color:#6AAFFF}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--color-cyan);outline-offset:3px;border-radius:4px}
ul,ol{list-style:none}
button{font-family:inherit}
.container,.grid-container{max-width:var(--max-width);margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;width:100%}

.site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(6,11,20,0.78);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid rgba(151,176,220,0.14);
}
.nav-bar{
    max-width:var(--max-width);
    height:72px;
    margin:0 auto;
    padding:0 24px;
    display:flex;
    align-items:center;
    justify-content:space-between;
}
.brand{
    font-size:21px;
    font-weight:700;
    color:var(--color-text);
    letter-spacing:.6px;
    line-height:1;
}
.brand:hover{color:#fff}
.site-nav{
    display:flex;
    align-items:center;
    gap:42px;
    margin-left:auto;
}
.nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    font-size:15px;
    color:var(--color-sub);
    background:transparent;
    padding:6px 2px;
    line-height:1.4;
}
.nav-link:hover{color:var(--color-primary-high);background:transparent;text-decoration:none}
.nav-link.active{
    color:var(--color-text);
    font-weight:600;
}
.nav-link.active::after{
    content:"";
    position:absolute;
    left:50%;
    bottom:-4px;
    width:32px;
    height:4px;
    border-radius:3px;
    transform:translateX(-50%);
    background:var(--color-cyan);
}
.nav-toggle{
    display:none;
    background:transparent;
    border:1px solid var(--color-border);
    border-radius:10px;
    width:44px;
    height:44px;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:5px;
    cursor:pointer;
    padding:0;
}
.nav-toggle span{
    display:block;
    width:20px;
    height:2px;
    background:var(--color-text);
    border-radius:2px;
    transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle:hover{background:rgba(23,107,255,.12)}

.template-article-page{min-height:60vh}
.breadcrumb-bar{
    padding:24px 0;
    border-bottom:1px solid rgba(151,176,220,0.12);
    background:rgba(10,19,34,.35);
    font-size:14px;
    color:var(--color-weak);
}
.breadcrumb-bar .container{display:flex;align-items:center;flex-wrap:wrap;gap:6px}
.breadcrumb-bar a{color:var(--color-sub);transition:color .2s}
.breadcrumb-bar a:hover{color:var(--color-primary-high)}
.crumb-separator{opacity:.4;margin:0 2px;color:var(--color-weak)}
.crumb-current{
    max-width:360px;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
}

.article-hero{
    position:relative;
    padding:84px 0 56px;
    background:
        linear-gradient(135deg,rgba(6,11,20,.90) 0%,rgba(8,15,30,.72) 54%,rgba(10,19,34,.55) 100%),
        url("/assets/images/coverpic/cover-1.webp") center 30% / cover no-repeat;
    border-bottom:1px solid rgba(151,176,220,.14);
}
.article-hero .grid-container{position:relative;z-index:2}
.article-hero::before{
    content:"";
    position:absolute;
    left:0;
    right:0;
    top:0;
    bottom:0;
    background:linear-gradient(180deg,transparent 0%,rgba(6,11,20,.24) 100%);
    pointer-events:none;
}
.article-kicker{
    display:inline-flex;
    align-items:center;
    gap:10px;
    padding:8px 14px;
    background:rgba(13,23,40,.72);
    border:1px solid var(--color-border);
    border-radius:999px;
    color:var(--color-cyan);
    font-size:13px;
    font-weight:600;
    letter-spacing:.4px;
    margin-bottom:26px;
}
.article-title{
    font-size:40px;
    line-height:1.26;
    font-weight:700;
    color:var(--color-text);
    max-width:920px;
    letter-spacing:.2px;
    margin-bottom:26px;
}
.article-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:16px 26px;
    color:var(--color-sub);
    font-size:14px;
    padding-top:4px;
}
.meta-item{
    display:inline-flex;
    align-items:center;
    gap:8px;
}
.meta-item i{color:var(--color-cyan);opacity:.8;font-size:15px}
.meta-item time,.meta-item span{font-variant-numeric:tabular-nums}
.article-meta .meta-cat a{
    color:var(--color-primary-high);
    border-bottom:1px solid transparent;
}
.article-meta .meta-cat a:hover{border-bottom-color:currentColor}

.article-main-section{padding:72px 0}
.article-body-layout .cell{max-width:780px}
.article-typography{
    font-size:16px;
    line-height:1.9;
    color:var(--color-body);
    word-break:break-word;
}
.article-typography > *{margin-bottom:1.5em}
.article-typography h2{
    font-size:27px;
    color:var(--color-text);
    font-weight:650;
    line-height:1.4;
    margin-top:2em;
    padding-bottom:10px;
    border-bottom:1px solid rgba(151,176,220,.14);
}
.article-typography h3{
    font-size:21px;
    font-weight:600;
    color:var(--color-text);
    margin-top:2em;
    line-height:1.5;
}
.article-typography h4{
    font-size:18px;
    font-weight:600;
    color:var(--color-text);
    margin-top:1.8em;
}
.article-typography p{
    margin-bottom:1.5em;
    text-wrap:pretty;
}
.article-typography strong{color:var(--color-text);font-weight:600}
.article-typography a{
    color:var(--color-primary-high);
    text-decoration:underline;
    text-decoration-color:rgba(23,107,255,.45);
    text-underline-offset:5px;
    text-decoration-thickness:1px;
}
.article-typography a:hover{color:#9DC6FF}
.article-typography blockquote{
    margin:1.8em 0;
    padding:22px 26px;
    background:rgba(15,23,42,.45);
    border-left:4px solid var(--color-cyan);
    border-radius:0 14px 14px 0;
    color:var(--color-sub);
    font-size:15.5px;
}
.article-typography ul{
    list-style:none;
    margin:0 0 1.8em;
    padding:0;
}
.article-typography ul li{
    position:relative;
    padding-left:22px;
    margin-bottom:10px;
}
.article-typography ul li::before{
    content:"";
    position:absolute;
    left:2px;
    top:.76em;
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--color-cyan);
    box-shadow:0 0 8px rgba(52,226,255,.5);
}
.article-typography ol{
    list-style:none;
    counter-reset:pg-ol;
    margin:0 0 1.8em;
    padding:0;
}
.article-typography ol li{
    position:relative;
    padding-left:36px;
    counter-increment:pg-ol;
    margin-bottom:12px;
}
.article-typography ol li::before{
    content:counter(pg-ol);
    position:absolute;
    left:0;
    top:.2em;
    width:24px;
    height:24px;
    display:flex;
    align-items:center;
    justify-content:center;
    border:1px solid var(--color-border);
    border-radius:50%;
    color:var(--color-cyan);
    font-size:12px;
    font-weight:700;
    font-variant-numeric:tabular-nums;
}
.article-typography img{
    border-radius:var(--radius-lg);
    margin:2.2em 0;
    box-shadow:0 18px 40px rgba(0,0,0,.35);
    border:1px solid var(--color-border);
}
.article-typography hr{
    border:0;
    height:1px;
    background:var(--color-border);
    margin:2.6em 0;
}
.article-tags{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:12px;
    margin-top:18px;
}
.article-tags a{
    font-size:13px;
    color:var(--color-sub);
    background:rgba(15,23,42,.5);
    border:1px solid var(--color-border);
    border-radius:var(--radius-tag);
    padding:5px 12px;
    transition:border-color .2s,color .2s,background .2s;
}
.article-tags a:hover{
    color:var(--color-cyan);
    border-color:var(--color-border-strong);
    background:rgba(23,107,255,.12);
}
.article-return{
    margin-top:48px;
    padding-top:26px;
    border-top:1px solid var(--color-border);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    flex-wrap:wrap;
}

.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 24px;
    border-radius:var(--radius-sm);
    font-size:15px;
    font-weight:600;
    line-height:1;
    border:1px solid transparent;
    cursor:pointer;
    transition:all .25s ease;
    white-space:nowrap;
}
.btn-primary{
    background:var(--color-primary);
    color:#fff;
    box-shadow:0 0 24px rgba(23,107,255,.45);
}
.btn-primary:hover{
    background:var(--color-primary-high);
    color:#fff;
    box-shadow:0 0 34px rgba(23,107,255,.65);
    transform:translateY(-1px);
}
.btn-secondary{
    background:rgba(15,23,42,.45);
    border-color:rgba(151,176,220,.28);
    color:var(--color-text);
    box-shadow:inset 0 0 0 rgba(0,0,0,0);
}
.btn-secondary:hover{
    border-color:rgba(151,176,220,.62);
    color:#fff;
    background:rgba(30,44,72,.45);
    transform:translateY(-1px);
}

.not-found-wrap{
    min-height:50vh;
    padding:120px 24px;
    display:flex;
    align-items:center;
    justify-content:center;
}
.not-found-card{
    max-width:520px;
    width:100%;
    text-align:center;
    background:var(--color-glass);
    border:1px solid var(--color-border);
    border-radius:var(--radius-lg);
    padding:48px 36px;
    box-shadow:0 22px 50px rgba(0,0,0,.32);
}
.not-found-icon{
    width:70px;
    height:70px;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    margin:0 auto 22px;
    background:rgba(52,226,255,.10);
    border:1px solid rgba(52,226,255,.35);
    color:var(--color-cyan);
    font-size:24px;
    box-shadow:0 0 24px rgba(52,226,255,.16);
}
.not-found-card h1{
    font-size:24px;
    color:var(--color-text);
    font-weight:650;
    margin-bottom:12px;
}
.not-found-card p{color:var(--color-sub);font-size:15px;margin-bottom:26px}
.btn-back-home{
    height:48px;
}

.recommend-section{
    padding:0 0 88px;
}
.section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:20px;
    margin-bottom:42px;
}
.section-label{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    font-weight:600;
    color:var(--color-cyan);
    letter-spacing:1px;
    margin-bottom:10px;
}
.section-label::before{
    content:"";
    width:20px;
    height:1px;
    background:var(--color-cyan);
    opacity:.7;
}
.section-title{
    font-size:28px;
    font-weight:650;
    color:var(--color-text);
    line-height:1.35;
}
.section-sub{
    font-size:14px;
    color:var(--color-weak);
    max-width:340px;
    margin-left:auto;
}
.related-card{
    display:flex;
    flex-direction:column;
    height:100%;
    padding:22px;
    background:rgba(12,20,36,.54);
    border:1px solid var(--color-border);
    border-radius:var(--radius-md);
    transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.related-card:hover{
    border-color:var(--color-border-strong);
    transform:translateY(-4px);
    box-shadow:0 12px 30px rgba(0,0,0,.35);
}
.related-card .card-thumb{
    flex:0 0 auto;
    overflow:hidden;
    border-radius:10px;
    margin-bottom:16px;
    border:1px solid rgba(151,176,220,.15);
    aspect-ratio:16/9;
    background:#0f1522;
}
.related-card .card-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .45s ease;
}
.related-card:hover .card-thumb img{transform:scale(1.03)}
.related-card h3{
    font-size:17px;
    line-height:1.55;
    color:var(--color-text);
    font-weight:600;
    margin-bottom:8px;
}
.related-card h3 a{color:inherit}
.related-card h3 a:hover{color:var(--color-cyan)}
.related-card .card-meta{
    margin-top:auto;
    display:flex;
    align-items:center;
    gap:12px;
    color:var(--color-weak);
    font-size:13px;
}
.related-card .card-meta i{color:var(--color-cyan);opacity:.8;font-size:14px}

.faq-section{
    padding:86px 0 96px;
    background:rgba(10,19,34,.48);
    border-top:1px solid rgba(151,176,220,.12);
    border-bottom:1px solid rgba(151,176,220,.12);
}
.faq-wrap{max-width:860px;margin:12px auto 0}
.custom-accordion{
    border:0;
    background:transparent;
}
.custom-accordion .accordion-item{
    border:0;
    border-bottom:1px solid var(--color-border);
    background:transparent;
    margin:0;
}
.custom-accordion .accordion-item:last-child{border-bottom:0}
.custom-accordion .accordion-title{
    position:relative;
    background:transparent;
    color:var(--color-body);
    font-size:16px;
    font-weight:600;
    line-height:1.6;
    padding:20px 64px 20px 0;
    border:0;
    font-family:var(--font-main);
    transition:color .2s;
}
.custom-accordion .accordion-title:hover{
    background:transparent;
    color:var(--color-cyan);
}
.custom-accordion .accordion-title::after{
    content:"" !important;
    position:absolute;
    right:4px;
    top:50%;
    width:18px;
    height:18px;
    background:transparent !important;
    border:0 !important;
    transform:translateY(-50%);
}
.custom-accordion .accordion-title::before{
    content:"+";
    position:absolute;
    right:6px;
    top:50%;
    transform:translateY(-50%);
    width:28px;
    height:28px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:8px;
    background:rgba(52,226,255,.08);
    border:1px solid rgba(52,226,255,.28);
    color:var(--color-cyan);
    font-size:18px;
    font-weight:400;
    transition:all .2s ease;
}
.custom-accordion .accordion-item.is-active > .accordion-title{
    color:var(--color-cyan);
}
.custom-accordion .accordion-item.is-active > .accordion-title::before{
    content:"−";
    background:rgba(23,107,255,.24);
    border-color:rgba(52,226,255,.5);
    box-shadow:0 0 18px rgba(23,107,255,.25);
}
.custom-accordion .accordion-content{
    background:transparent;
    border:0;
    padding:2px 0 24px;
    color:var(--color-sub);
    font-size:15px;
    line-height:1.85;
}
.faq-note{
    max-width:760px;
    margin:24px auto 0;
    text-align:center;
    font-size:14px;
    color:var(--color-weak);
}
.faq-note a{color:var(--color-primary-high);border-bottom:1px dashed rgba(23,107,255,.6)}
.faq-note a:hover{border-bottom-style:solid}

.article-cta{
    padding:80px 0;
    background:var(--color-bg);
}
.cta-panel{
    position:relative;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:40px;
    padding:48px 54px;
    border-radius:var(--radius-lg);
    overflow:hidden;
    background:
        radial-gradient(circle at 12% 30%,rgba(52,226,255,.10) 0,transparent 22%),
        radial-gradient(circle at 82% 65%,rgba(23,107,255,.20) 0,transparent 26%),
        rgba(10,19,34,.82);
    border:1px solid var(--color-border);
}
.cta-panel::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(52,226,255,.12) 1px,transparent 1px);
    background-size:42px 42px;
    background-position:center;
    pointer-events:none;
    opacity:.24;
}
.cta-copy{position:relative}
.cta-copy h2{
    font-size:28px;
    color:var(--color-text);
    font-weight:650;
    letter-spacing:.2px;
    margin-bottom:12px;
}
.cta-copy p{
    font-size:15px;
    color:var(--color-sub);
    max-width:560px;
}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0}

.site-footer{
    padding-top:72px;
    border-top:1px solid rgba(151,176,220,.14);
    background:var(--color-surface);
}
.footer-grid{
    display:grid;
    grid-template-columns:2fr 1fr 1fr 1.2fr;
    gap:44px;
    padding-bottom:48px;
}
.footer-brand{
    font-size:22px;
    font-weight:700;
    color:var(--color-text);
    margin-bottom:14px;
    letter-spacing:.6px;
}
.footer-desc{
    font-size:14px;
    color:var(--color-weak);
    line-height:1.9;
    max-width:340px;
}
.footer-col h4{
    font-size:15px;
    font-weight:600;
    color:var(--color-text);
    margin-bottom:18px;
    padding-bottom:10px;
    border-bottom:1px solid rgba(151,176,220,.14);
}
.footer-col a,
.footer-col p{
    display:block;
    color:var(--color-sub);
    font-size:14px;
    line-height:1.9;
    margin-bottom:8px;
}
.footer-col a:hover{color:var(--color-cyan)}
.footer-contact p{display:flex;align-items:center;gap:9px;color:var(--color-weak);margin-bottom:10px}
.footer-contact i{color:var(--color-cyan);width:18px;text-align:center;opacity:.9}
.footer-bottom{
    display:flex;
    flex-direction:column;
    gap:6px;
    padding:22px 0;
    border-top:1px solid rgba(151,176,220,.12);
    color:var(--color-weak);
    font-size:13px;
    line-height:1.6;
}

@media (max-width:1024px){
    .article-title{font-size:35px}
    .section-title{font-size:26px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
    .site-nav{display:none}
    .nav-toggle{display:inline-flex}
    .site-nav.is-open{
        display:flex;
        flex-direction:column;
        gap:0;
        position:absolute;
        top:72px;
        left:0;
        right:0;
        background:rgba(6,11,20,0.97);
        padding:12px 24px;
        border-bottom:1px solid var(--color-border);
        backdrop-filter:none;
        max-height:480px;
    }
    .site-nav.is-open .nav-link{
        width:100%;
        padding:15px 6px;
        font-size:16px;
        border-bottom:1px solid rgba(151,176,220,.12);
    }
    .site-nav.is-open .nav-link:last-child{border-bottom:0}
    .site-nav.is-open .nav-link.active::after{display:none}
    .site-nav.is-open .nav-link.active{color:var(--color-cyan)}
}
@media (max-width:768px){
    .article-hero{padding:56px 0 42px}
    .article-title{font-size:30px}
    .article-meta{flex-wrap:wrap;gap:10px 16px}
    .section-head{flex-direction:column;align-items:flex-start;gap:10px}
    .section-sub{margin-left:0;max-width:100%}
    .article-cta .cta-panel{flex-direction:column;align-items:flex-start;padding:36px 24px}
    .cta-actions{width:100%}
    .cta-actions .btn{flex:1;height:52px}
}
@media (max-width:520px){
    .container,.grid-container,.nav-bar{padding-left:16px;padding-right:16px}
    .brand{font-size:19px}
    .article-title{font-size:27px;line-height:1.35}
    .breadcrumb-bar .crumb-current{max-width:220px}
    .article-main-section{padding:56px 0}
    .recommend-section{padding-bottom:56px}
    .article-typography h2{font-size:23px}
    .article-typography h3{font-size:19px}
    .article-return{flex-direction:column;align-items:flex-start}
    .article-return .btn{width:100%}
    .btn{height:50px}
    .footer-grid{
        grid-template-columns:1fr;
        gap:28px;
        padding-bottom:28px;
    }
    .footer-bottom{font-size:12px}
    .not-found-card{padding:36px 20px}
    .cta-panel{padding:30px 20px}
    .cta-copy h2{font-size:24px}
    .custom-accordion .accordion-title{padding-right:58px;font-size:15px}
}

/* roulang page: category1 */
:root{
  --color-bg:#060B14;
  --color-bg-soft:#0A1322;
  --color-panel:rgba(15,23,42,.62);
  --color-brand:#0A3FD6;
  --color-brand-high:#176BFF;
  --color-cyan:#34E2FF;
  --color-ok:#2EE59E;
  --color-text:#EDF3FF;
  --color-body:#C3CFE3;
  --color-muted:#7E93B6;
  --color-border:rgba(151,176,220,.20);
  --color-border-hover:rgba(120,180,255,.45);
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:8px;
  --radius-xs:4px;
  --font-main:"PingFang SC","HarmonicOS Sans SC","Microsoft YaHei UI","Source Han Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
  --section-space:104px;
  --shadow-primary:0 0 24px rgba(23,107,255,.45);
}

*{
  box-sizing:border-box;
}
html{
  scroll-behavior:smooth;
}
body{
  margin:0;
  background:var(--color-bg);
  color:var(--color-body);
  font-family:var(--font-main);
  font-size:16px;
  line-height:1.8;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
body.foundation-page{
  font-family:var(--font-main);
  line-height:1.8;
}
img{
  max-width:100%;
  display:block;
}
a{
  color:var(--color-body);
  text-decoration:none;
  transition:color .25s ease,border-color .25s ease,background-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
a:hover{
  color:var(--color-text);
}
button{
  font-family:var(--font-main);
}
p{
  margin:0 0 18px;
  line-height:1.8;
}
h1,h2,h3,h4{
  margin:0;
  color:var(--color-text);
  line-height:1.35;
  font-weight:650;
}
ul,ol{
  padding-left:22px;
  color:var(--color-body);
  line-height:1.8;
}
.grid-container{
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
}
.grid-container.full{
  max-width:100%;
  padding-left:0;
  padding-right:0;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:46px;
  padding:10px 24px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  cursor:pointer;
  transition:all .28s ease;
}
.btn svg{
  width:16px;
  height:16px;
  flex:0 0 auto;
}
.btn-primary{
  background:var(--color-brand);
  color:#fff;
  border-color:var(--color-brand);
  box-shadow:var(--shadow-primary);
}
.btn-primary:hover{
  background:var(--color-brand-high);
  border-color:var(--color-brand-high);
  color:#fff;
  box-shadow:0 0 32px rgba(23,107,255,.65);
  transform:translateY(-1px);
}
.btn-ghost{
  background:rgba(15,23,42,.56);
  color:var(--color-text);
  border-color:rgba(151,176,220,.30);
  backdrop-filter:blur(6px);
}
.btn-ghost:hover{
  border-color:var(--color-border-hover);
  background:rgba(21,34,58,.75);
  color:#fff;
}
.btn-arrow svg{
  transition:transform .28s ease;
}
.btn-arrow:hover svg{
  transform:translateX(4px);
}

/* header */
.site-header{
  position:sticky;
  top:0;
  z-index:40;
  background:rgba(6,11,20,.86);
  border-bottom:1px solid rgba(151,176,220,.16);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.nav-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
}
.brand{
  color:var(--color-text);
  font-size:22px;
  font-weight:750;
  letter-spacing:.4px;
  white-space:nowrap;
  line-height:1;
}
.brand:hover{
  color:#fff;
}
.site-nav{
  display:flex;
  align-items:center;
  gap:38px;
}
.site-nav .nav-link{
  position:relative;
  color:#C3CFE3;
  font-size:15px;
  font-weight:500;
  padding:24px 0 22px;
  letter-spacing:.3px;
  display:inline-flex;
  align-items:center;
}
.site-nav .nav-link:hover{
  color:#fff;
}
.site-nav .nav-link.active{
  color:var(--color-text);
  font-weight:600;
}
.site-nav .nav-link.active::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:28px;
  height:3px;
  border-radius:99px;
  background:var(--color-cyan);
  opacity:.9;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  padding:0;
  margin:0;
  border:0;
  background:transparent;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:22px;
  height:2px;
  background:var(--color-text);
  border-radius:99px;
  transition:all .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2){
  opacity:0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}

/* hero */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:80px 0 64px;
  border-bottom:1px solid rgba(151,176,220,.14);
  background:
    linear-gradient(180deg,rgba(6,11,20,.50) 0%,rgba(6,11,20,.92) 100%),
    url("/assets/images/backpic/back-1.webp") center 30% / cover no-repeat;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:28px;
  padding:0;
  color:var(--color-muted);
  font-size:14px;
}
.breadcrumb a{
  color:var(--color-muted);
  transition:color .25s ease;
}
.breadcrumb a:hover{
  color:var(--color-cyan);
}
.breadcrumb .crumb-current{
  color:#C3CFE3;
}
.hero-content{
  position:relative;
  z-index:2;
  max-width:900px;
  padding:18px 0 22px;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  margin-bottom:20px;
  border:1px solid rgba(52,226,255,.28);
  border-radius:var(--radius-xs);
  background:rgba(52,226,255,.06);
  color:var(--color-cyan);
  font-size:13px;
  letter-spacing:2px;
}
.hero-tag i{
  font-size:10px;
}
.hero-content h1{
  font-size:42px;
  font-weight:750;
  letter-spacing:.4px;
  margin-bottom:20px;
}
.hero-lead{
  max-width:760px;
  color:#D7E2F5;
  font-size:17px;
  line-height:1.9;
  margin-bottom:32px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
}

/* meta strip */
.meta-strip{
  border-bottom:1px solid rgba(151,176,220,.14);
  background:rgba(10,19,34,.40);
  padding:22px 0;
}
.meta-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.meta-grid .meta-cell{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding-right:18px;
}
.meta-grid .meta-icon{
  width:34px;
  height:34px;
  flex:0 0 auto;
  display:flex;
  align-items:center;
  justify-content:center;
  border:1px solid rgba(52,226,255,.26);
  border-radius:var(--radius-sm);
  color:var(--color-cyan);
  background:rgba(52,226,255,.05);
  font-size:14px;
}
.meta-grid .meta-text strong{
  display:block;
  color:var(--color-text);
  font-size:15px;
  font-weight:600;
  margin-bottom:4px;
}
.meta-grid .meta-text span{
  display:block;
  font-size:14px;
  color:var(--color-muted);
  line-height:1.7;
}

/* base section */
.section{
  padding-top:var(--section-space);
  padding-bottom:var(--section-space);
}
.section-soft{
  background:rgba(10,19,34,.44);
}
.section-line-top{
  border-top:1px solid rgba(151,176,220,.14);
}
.section-head{
  max-width:860px;
  margin-bottom:48px;
}
.section-head.center{
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}
.section-kicker{
  display:inline-block;
  font-size:13px;
  letter-spacing:2px;
  color:var(--color-cyan);
  font-weight:600;
  margin-bottom:14px;
}
.section-head h2{
  font-size:32px;
  font-weight:700;
  margin-bottom:14px;
  letter-spacing:.2px;
}
.section-head p{
  color:var(--color-body);
  font-size:16px;
  line-height:1.85;
  margin:0;
}

/* visual */
.visual-frame{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid rgba(151,176,220,.22);
  overflow:hidden;
  background:var(--color-bg-soft);
}
.visual-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:4/3;
  transition:transform .5s ease;
}
.visual-frame:hover img{
  transform:scale(1.018);
}
.visual-frame .frame-caption{
  position:absolute;
  left:12px;
  bottom:12px;
  max-width:calc(100% - 24px);
  padding:6px 12px;
  border-radius:var(--radius-xs);
  background:rgba(6,11,20,.72);
  color:#DCE6F7;
  font-size:13px;
  backdrop-filter:blur(6px);
  border:1px solid rgba(151,176,220,.18);
}

/* about intro */
.about-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.about-copy h3{
  font-size:25px;
  font-weight:650;
  margin-bottom:18px;
}
.about-copy p{
  color:var(--color-body);
  line-height:1.9;
  margin-bottom:20px;
}
.feature-list{
  list-style:none;
  padding:0;
  margin:24px 0 0;
}
.feature-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:12px;
  color:#C3CFE3;
}
.feature-list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:11px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--color-cyan);
  box-shadow:0 0 8px rgba(52,226,255,.45);
}

/* topics */
.topic-list{
  margin-top:20px;
}
.topic-item{
  display:grid;
  grid-template-columns:88px 1fr auto;
  align-items:start;
  gap:20px;
  padding:30px 8px 30px 0;
  border-bottom:1px solid rgba(151,176,220,.16);
}
.topic-item:first-child{
  border-top:1px solid rgba(151,176,220,.16);
}
.topic-item .topic-no{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  font-variant-numeric:tabular-nums;
  font-size:17px;
  color:var(--color-cyan);
  font-weight:600;
  letter-spacing:.4px;
  padding-top:5px;
}
.topic-item .topic-body h3{
  font-size:20px;
  font-weight:620;
  color:var(--color-text);
  margin-bottom:8px;
}
.topic-item .topic-body p{
  color:var(--color-body);
  line-height:1.8;
  margin:0;
}
.topic-item .topic-badge{
  padding:4px 10px;
  border:1px solid rgba(151,176,220,.24);
  border-radius:var(--radius-xs);
  background:rgba(15,23,42,.50);
  color:#B7C7E1;
  font-size:13px;
  white-space:nowrap;
}
.topic-item:hover .topic-body h3{
  color:#fff;
}
.topic-item:hover .topic-no{
  color:#fff;
}

/* materials */
.material-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}
.material-copy h3{
  font-size:25px;
  font-weight:650;
  margin-bottom:18px;
}
.material-copy p{
  color:var(--color-body);
  line-height:1.9;
  margin-bottom:24px;
}
.material-list{
  list-style:none;
  padding:0;
  margin:0;
}
.material-list li{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:16px 0;
  border-bottom:1px solid rgba(151,176,220,.14);
  color:#D4E0F1;
  font-size:15px;
}
.material-list li:last-child{
  border-bottom:0;
}
.material-list li i{
  width:22px;
  height:22px;
  flex:0 0 auto;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid rgba(46,229,158,.32);
  color:var(--color-ok);
  font-size:11px;
  margin-top:4px;
}

/* faq */
.faq-wrap{
  max-width:900px;
  margin:0 auto;
}
.faq-accordion{
  background:transparent;
  margin:0;
  border:0;
}
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid rgba(151,176,220,.18);
}
.faq-accordion .accordion-title{
  position:relative;
  display:block;
  padding:22px 44px 22px 0;
  background:transparent;
  border:0;
  color:var(--color-text);
  font-size:17px;
  font-weight:550;
  line-height:1.6;
  transition:color .25s ease;
}
.faq-accordion .accordion-title:hover{
  background:transparent;
  color:var(--color-cyan);
}
.faq-accordion .accordion-title::after{
  content:"+";
  position:absolute;
  right:6px;
  top:50%;
  transform:translateY(-50%);
  width:26px;
  height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:rgba(183,199,225,.6);
  font-size:24px;
  font-weight:300;
  transition:all .25s ease;
}
.faq-accordion .accordion-item.is-active .accordion-title{
  color:var(--color-cyan);
}
.faq-accordion .accordion-item.is-active .accordion-title::after{
  content:"−";
  color:var(--color-cyan);
}
.faq-accordion .accordion-content{
  background:transparent;
  padding:2px 58px 26px 2px;
  color:var(--color-body);
  font-size:15px;
  line-height:1.85;
}
.faq-note{
  text-align:center;
  margin-top:32px;
  color:var(--color-muted);
  font-size:14px;
}

/* link entries */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.entry-card{
  position:relative;
  display:block;
  padding:28px 30px;
  min-height:180px;
  border:1px solid rgba(151,176,220,.20);
  border-radius:var(--radius-md);
  background:rgba(15,23,42,.62);
  overflow:hidden;
  transition:all .28s ease;
}
.entry-card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:3px;
  height:100%;
  background:var(--color-cyan);
  opacity:.5;
}
.entry-card:hover{
  border-color:var(--color-border-hover);
  box-shadow:0 14px 34px rgba(0,0,0,.28);
  transform:translateY(-2px);
}
.entry-card .entry-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border:1px solid rgba(52,226,255,.28);
  border-radius:var(--radius-sm);
  background:rgba(52,226,255,.05);
  color:var(--color-cyan);
  font-size:17px;
  margin-bottom:18px;
}
.entry-card h3{
  font-size:19px;
  font-weight:620;
  margin-bottom:8px;
  color:var(--color-text);
}
.entry-card p{
  color:var(--color-muted);
  font-size:15px;
  line-height:1.75;
  margin-bottom:18px;
}
.entry-card .entry-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--color-cyan);
  font-size:14px;
  font-weight:600;
}
.entry-card .entry-link svg{
  width:15px;
  height:15px;
}

/* CTA */
.cta-band{
  padding:74px 0;
  background:var(--color-bg-soft);
  border-top:1px solid rgba(151,176,220,.14);
  border-bottom:1px solid rgba(151,176,220,.14);
  position:relative;
  overflow:hidden;
}
.cta-inner{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:34px 40px;
  border:1px solid rgba(151,176,220,.22);
  border-radius:var(--radius-lg);
  background:rgba(15,23,42,.54);
}
.cta-inner h2{
  font-size:28px;
  font-weight:700;
  margin-bottom:8px;
}
.cta-inner p{
  color:var(--color-body);
  margin:0;
  max-width:620px;
}
.cta-inner .cta-btn-group{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.cta-spot{
  position:absolute;
  width:180px;
  height:180px;
  left:-60px;
  bottom:-90px;
  opacity:.10;
  background:radial-gradient(circle,rgba(52,226,255,.4) 0%,transparent 68%);
  pointer-events:none;
}

/* footer */
.site-footer{
  background:rgba(8,16,35,.90);
  padding-top:60px;
  padding-bottom:28px;
  border-top:1px solid rgba(151,176,220,.14);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr .9fr .9fr 1.1fr;
  gap:48px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(151,176,220,.14);
}
.footer-brand{
  font-size:22px;
  color:var(--color-text);
  font-weight:750;
  margin-bottom:10px;
}
.footer-desc{
  color:var(--color-muted);
  font-size:14px;
  line-height:1.85;
  max-width:400px;
  margin:0;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#D5E1F4;
  margin-bottom:18px;
  letter-spacing:.4px;
}
.footer-col a{
  display:block;
  color:var(--color-muted);
  font-size:14px;
  line-height:1.8;
  margin-bottom:9px;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-col a:hover{
  color:var(--color-cyan);
  padding-left:3px;
}
.footer-col p{
  color:var(--color-muted);
  font-size:14px;
  margin-bottom:10px;
  display:flex;
  gap:8px;
  align-items:center;
}
.footer-col p i{
  color:#7E93B6;
  font-size:13px;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  padding-top:24px;
  color:rgba(126,147,182,.78);
  font-size:13px;
}

/* responsive */
@media screen and (max-width:1024px){
  :root{
    --section-space:84px;
  }
  .grid-container{
    padding-left:28px;
    padding-right:28px;
  }
  .about-block,
  .material-wrap{
    grid-template-columns:1fr;
    gap:36px;
  }
  .about-visual,
  .material-visual{
    order:-1;
  }
  .hero-content h1{
    font-size:36px;
  }
  .site-nav{
    gap:26px;
  }
}

@media screen and (max-width:768px){
  .nav-bar{
    height:66px;
  }
  .site-nav{
    display:none;
    position:absolute;
    top:66px;
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:10px 24px 16px;
    background:rgba(6,11,20,.97);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border-bottom:1px solid rgba(151,176,220,.20);
  }
  .site-nav.open{
    display:flex;
  }
  .site-nav .nav-link{
    padding:13px 0;
    border-bottom:1px solid rgba(151,176,220,.12);
  }
  .site-nav .nav-link:last-child{
    border-bottom:0;
  }
  .site-nav .nav-link.active::after{
    left:0;
    top:auto;
    bottom:4px;
  }
  .nav-toggle{
    display:flex;
  }
  .page-hero{
    padding:56px 0 48px;
  }
  .hero-content{
    padding:10px 0 10px;
  }
  .hero-content h1{
    font-size:30px;
  }
  .hero-lead{
    font-size:16px;
  }
  .meta-grid{
    grid-template-columns:1fr;
    gap:12px;
  }
  .meta-grid .meta-cell{
    padding:14px 0;
    border-bottom:1px solid rgba(151,176,220,.12);
  }
  .meta-grid .meta-cell:last-child{
    border-bottom:0;
  }
  .section-head h2{
    font-size:27px;
  }
  .topic-item{
    grid-template-columns:1fr;
    gap:6px;
    padding:24px 0;
  }
  .topic-item .topic-badge{
    width:max-content;
    margin-top:14px;
  }
  .entry-grid{
    grid-template-columns:1fr;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:32px;
  }
  .cta-inner{
    padding:28px;
    flex-direction:column;
    align-items:flex-start;
  }
}

@media screen and (max-width:520px){
  .grid-container{
    padding-left:20px;
    padding-right:20px;
  }
  .section{
    padding-top:70px;
    padding-bottom:70px;
  }
  .hero-content h1{
    font-size:27px;
    line-height:1.4;
  }
  .hero-tag{
    font-size:12px;
  }
  .cta-inner h2{
    font-size:23px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:28px;
  }
  .footer-bottom{
    flex-direction:column;
  }
  .btn{
    width:100%;
  }
  .hero-actions .btn,
  .cta-btn-group .btn{
    width:100%;
  }
}

/* roulang page: category2 */
/* ===== Root & Reset ===== */
:root{
  --primary:#0A3FD6;
  --primary-hover:#176BFF;
  --cyan:#34E2FF;
  --green:#2EE59E;
  --bg-root:#060B14;
  --bg-section:#0A1322;
  --glass:rgba(15,23,42,0.62);
  --border:rgba(151,176,220,0.20);
  --border-hover:rgba(120,180,255,0.45);
  --text-main:#EDF3FF;
  --text-body:#C3CFE3;
  --text-muted:#7E93B6;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-btn:8px;
  --radius-sm:4px;
  --transition:all 0.25s cubic-bezier(0.4,0,0.2,1);
  --shadow-card:0 8px 24px rgba(0,0,0,0.25);
  --shadow-hover:0 12px 40px rgba(0,0,0,0.45);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","HarmonicOS Sans SC","Microsoft YaHei UI","Source Han Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
  background:var(--bg-root);
  color:var(--text-body);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border:0;}
a{color:var(--text-body);text-decoration:none;transition:var(--transition);cursor:pointer;}
a:hover,a:focus-visible{color:var(--primary-hover);text-decoration:underline;text-underline-offset:4px;}
button{background:none;border:none;cursor:pointer;font-family:inherit;}
ul,ol{list-style:none;}
.container{max-width:1200px;margin:0 auto;padding:0 28px;}
.section{padding:110px 0;position:relative;}
section[id],div[id]{scroll-margin-top:86px;}

/* ===== Typography ===== */
h1,h2,h3,h4,h5{font-weight:700;color:var(--text-main);line-height:1.3;letter-spacing:0.01em;}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;letter-spacing:0.16em;
  color:var(--cyan);text-transform:uppercase;margin-bottom:16px;
}
.section-eyebrow::before{
  content:'';display:block;width:24px;height:1px;
  background:linear-gradient(90deg,rgba(52,226,255,0),rgba(52,226,255,0.7));
}
.section-title{font-size:32px;font-weight:650;margin-bottom:14px;letter-spacing:0.01em;color:var(--text-main);}
.section-sub{max-width:680px;color:var(--text-muted);font-size:16px;line-height:1.75;}
h2.sec-title{font-size:30px;font-weight:700;}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:0 28px;font-weight:600;font-size:15px;line-height:1.2;
  height:50px;border-radius:var(--radius-btn);
  letter-spacing:0.02em;transition:var(--transition);
  text-decoration:none;appearance:none;white-space:nowrap;
  gap:8px;font-family:inherit;
}
.btn svg{width:16px;height:16px;stroke:currentColor;stroke-width:2;fill:none;}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 0 24px rgba(23,107,255,0.45);
  border:1px solid rgba(23,107,255,0.6);
}
.btn-primary:hover{
  background:var(--primary-hover);color:#fff;
  box-shadow:0 0 32px rgba(23,107,255,0.72);
  transform:translateY(-1px);
}
.btn-secondary{
  background:rgba(255,255,255,0.04);color:var(--text-main);
  border:1px solid rgba(255,255,255,0.14);
  backdrop-filter:blur(6px);
}
.btn-secondary:hover{
  background:rgba(255,255,255,0.08);color:var(--text-main);
  border-color:rgba(255,255,255,0.38);
  transform:translateY(-1px);
  text-decoration:none;
}
.btn-large{height:54px;padding:0 36px;font-size:16px;}

/* ===== Header ===== */
.site-header{
  height:72px;
  background:rgba(6,11,20,0.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(151,176,220,0.12);
  position:sticky;top:0;z-index:1000;
}
.nav-bar{
  max-width:1200px;margin:0 auto;height:100%;
  padding:0 28px;display:flex;align-items:center;
  justify-content:space-between;gap:24px;
}
.brand{
  font-size:22px;font-weight:700;color:var(--text-main);
  font-family:inherit;letter-spacing:0.02em;white-space:nowrap;
}
.brand:hover{color:var(--cyan);text-decoration:none;}
.site-header-nav{display:flex;gap:0;margin:0;align-items:center;}
.site-header-nav .nav-link{
  font-size:14.5px;color:var(--text-body);padding:10px 0;
  font-weight:500;letter-spacing:0.02em;
  position:relative;text-decoration:none;margin-left:38px;
  line-height:1.4;
}
.site-header-nav .nav-link::after{
  content:'';position:absolute;left:50%;bottom:-4px;transform:translateX(-50%);
  width:0;height:4px;border-radius:999px;
  background:var(--cyan);transition:width 0.28s ease;
}
.site-header-nav .nav-link:hover{color:var(--text-main);}
.site-header-nav .nav-link:hover::after{width:26px;}
.site-header-nav .nav-link.active{color:var(--text-main);}
.site-header-nav .nav-link.active::after{width:28px;}
.nav-toggle{
  display:none;width:44px;height:44px;
  background:rgba(255,255,255,0.03);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:8px;
  flex-direction:column;justify-content:center;
  align-items:center;gap:5px;overflow:hidden;
}
.nav-toggle span{width:18px;height:1.6px;background:var(--text-body);display:block;border-radius:2px;}
/* mobile nav overlay */
.site-header-nav ul{padding:0;margin:0;list-style:none;}

@media screen and (max-width:768px){
  .site-header-nav{
    position:fixed;top:72px;left:0;right:0;background:rgba(10,19,34,0.98);
    backdrop-filter:blur(12px);border-bottom:1px solid rgba(151,176,220,0.14);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:12px 24px 28px;display:none;
    z-index:999;max-height:calc(100vh - 80px);overflow-y:auto;
    gap:0;
  }
  .site-header-nav.open{display:flex;align-items:stretch;}
  .site-header-nav .nav-link{
    margin:0;display:block;padding:14px 6px;
    border-bottom:1px solid rgba(151,176,220,0.08);
    font-size:15px;
  }
  .site-header-nav .nav-link.active{color:var(--cyan);}
  .site-header-nav .nav-link.active::after{display:none;}
  .site-header-nav .nav-link::after{display:none;}
  .nav-toggle{display:flex;}
}

/* ===== Page Hero ===== */
.page-hero{
  padding:120px 0 92px;
  background:linear-gradient(180deg,rgba(10,19,34,0.25) 0%,rgba(6,11,20,0.82) 100%),url('/assets/images/backpic/back-2.png') no-repeat center 35%;
  background-size:cover;
  border-bottom:1px solid rgba(151,176,220,0.08);
}
.page-hero .container{position:relative;z-index:2;}
.page-hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(52,226,255,0.08);
  border:1px solid rgba(52,226,255,0.28);
  color:var(--cyan);padding:5px 14px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:0.12em;
  margin-bottom:28px;
}
.page-hero-badge i{font-size:12px;}
.page-hero h1{
  font-size:45px;font-weight:700;color:#fff;
  margin-bottom:20px;letter-spacing:0.01em;max-width:820px;
  line-height:1.24;
}
.page-hero .hero-sub{
  font-size:17px;color:var(--text-main);max-width:680px;
  margin-bottom:38px;line-height:1.9;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:62px;}
.meta-item{
  padding:10px 18px;
  background:rgba(10,19,34,0.55);backdrop-filter:blur(8px);
  border-left:2px solid var(--cyan);
  font-size:13.5px;color:var(--text-body);
  display:inline-flex;align-items:center;gap:8px;
}
.meta-item i{color:var(--cyan);font-size:14px;width:16px;text-align:center;}

/* ===== Section Divider ===== */
.sec-leading-badge{
  display:flex;align-items:center;justify-content:flex-start;
  gap:12px;margin-bottom:14px;
}
.sec-leading-badge .badge-line{width:38px;height:1.5px;background:var(--cyan);opacity:0.85;}
.sec-leading-badge span{font-size:12.5px;font-weight:600;letter-spacing:0.16em;color:var(--cyan);text-transform:uppercase;}
.section-title-light{font-size:32px;font-weight:700;color:var(--text-main);margin-bottom:15px;}
.section-desc{font-size:15px;color:var(--text-muted);max-width:650px;}

/* ===== Data / apply Notice ===== */
.data-band{
  background:rgba(10,19,34,0.62);
  border-top:1px solid rgba(151,176,220,0.10);
  border-bottom:1px solid rgba(151,176,220,0.10);
  padding:42px 0;
}
.data-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px 32px;
}
.data-grid .d-item{display:flex;gap:14px;align-items:flex-start;padding-right:20px;position:relative;}
.data-grid .d-item+.d-item::before{
  content:'';position:absolute;left:-16px;top:12%;height:76%;
  width:1px;background:rgba(151,176,220,0.22);
}
.data-grid .d-num{
  font-family:inherit;font-size:30px;font-weight:700;
  color:var(--cyan);font-variant-numeric:tabular-nums;
  line-height:1.2;white-space:nowrap;
}
.data-grid .d-desc{font-size:13px;color:var(--text-muted);line-height:1.65;margin-top:4px;}

/* ===== 图文铺陈区块 ===== */
.split-block{padding:110px 0;}
.split-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:86px;
  align-items:center;
}
.split-media{
  border-radius:var(--radius-lg);
  overflow:hidden;border:1px solid rgba(151,176,220,0.18);
  background:rgba(15,23,42,0.5);box-shadow:0 24px 56px rgba(0,0,0,0.32);
}
.split-media img{width:100%;min-height:270px;object-fit:cover;}
.split-media.media-order-1{order:1;}
.split-media.media-order-2{order:2;}
.split-content .eyebrow-line{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;color:var(--cyan);font-weight:600;
  letter-spacing:0.14em;margin-bottom:12px;text-transform:none;
}
.split-content .eyebrow-line::before{
  content:'';width:18px;height:1px;background:rgba(52,226,255,0.5);
}
.split-content h2{
  font-size:29px;font-weight:680;margin-bottom:20px;
  line-height:1.44;color:var(--text-main);
}
.split-content p{font-size:15px;color:var(--text-body);line-height:1.9;margin-bottom:18px;}
.check-list{margin-top:8px;margin-bottom:30px;display:flex;flex-direction:column;gap:0;}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:10px 0;border-bottom:1px dashed rgba(151,176,220,0.12);
  font-size:14px;line-height:1.75;color:var(--text-body);
}
.check-list li:last-child{border-bottom:none;}
.check-list i{
  color:var(--green);font-size:13px;margin-top:6px;width:22px;
  height:22px;flex:0 0 22px;
  border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(46,229,158,0.08);
  border:1px solid rgba(46,229,158,0.18);
}
.check-list.gap-based li{flex-wrap:wrap;}
.check-list li .lead-item{color:var(--text-main);font-weight:600;margin-right:6px;}

/* ===== Steps Timeline ===== */
.timeline-block{
  background:var(--bg-section);
  border-top:1px solid rgba(151,176,220,0.07);
  border-bottom:1px solid rgba(151,176,220,0.07);
}
.reg-steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:64px;
  position:relative;
  counter-reset:step-counter;
}
.reg-step{
  position:relative;padding:26px 22px;
  background:rgba(10,19,34,0.35);
  border:1px solid transparent;
  border-radius:8px;
  transition:var(--transition);
}
.reg-step + .reg-step{margin-left:-1px;}
.reg-step::before{
  counter-increment:step-counter;
  content:counter(step-counter,decimal-leading-zero);
  display:block;font-size:13px;font-weight:600;letter-spacing:0.08em;
  color:rgba(52,226,255,0.6);margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.reg-step:hover{
  border-color:rgba(120,180,255,0.28);
  background:rgba(15,23,42,0.65);
  transform:translateY(-3px);
}
.reg-step h3{font-size:17px;color:var(--text-main);margin-bottom:10px;font-weight:600;}
.reg-step p{font-size:13px;color:var(--text-muted);line-height:1.7;}

/* ===== Ticket 卡片 ===== */
.ticket-section{background:var(--bg-root);}
.ticket-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:28px;margin-top:52px;align-items:stretch;
}
.ticket-card{
  background:var(--glass);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px 30px;box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;
  position:relative;transition:var(--transition);
}
.ticket-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--border-hover);}
.ticket-card .rec-badge{
  display:inline-flex;align-items:center;
  position:absolute;top:-13px;left:30px;
  background:var(--cyan);color:#062033;
  font-size:12px;font-weight:700;line-height:1;
  padding:7px 16px;border-radius:999px;letter-spacing:0.06em;
  box-shadow:0 0 20px rgba(52,226,255,0.35);
}
.ticket-card.dark-highlight{
  background:rgba(10,19,34,0.85);
  border-color:rgba(52,226,255,0.28);
  box-shadow:0 0 30px rgba(52,226,255,0.07);
}
.ticket-card.dark-highlight:hover{border-color:rgba(52,226,255,0.6);box-shadow:0 0 40px rgba(52,226,255,0.12);}
.tk-name{font-size:14px;font-weight:600;color:var(--text-muted);letter-spacing:0.08em;margin-bottom:4px;text-transform:uppercase;}
.tk-name span{color:var(--cyan);}
.tk-price{
  font-size:38px;font-weight:750;color:var(--text-main);
  line-height:1.15;margin:16px 0 2px;font-variant-numeric:tabular-nums;
}
.tk-price small{font-size:13px;color:var(--text-muted);font-weight:400;}
.tk-price-note{font-size:12px;color:var(--text-muted);margin-bottom:24px;}
.tk-line{width:100%;height:1px;background:rgba(151,176,220,0.14);margin:20px 0;}
.tk-list{
  display:flex;flex-direction:column;gap:12px;
  margin-bottom:28px;flex:1;
}
.tk-list li{
  display:flex;gap:9px;align-items:flex-start;
  font-size:13.5px;color:var(--text-body);
}
.tk-list li .check{
  width:17px;height:17px;flex:0 0 17px;border-radius:4px;
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:4px;
}
.tk-list li .check svg{width:10px;height:10px;stroke:var(--green);stroke-width:3;fill:none;}
.tk-footer{margin-top:auto;padding-top:16px;}

/* ===== Benefits Info ===== */
.benefit-block{
  background:linear-gradient(0deg,rgba(6,11,20,0.35) 0%,rgba(10,19,34,0.55) 100%);
}

/* ===== Flow + Guide ===== */
.guide-grid{
  display:grid;grid-template-columns:1fr 1fr 1fr;
  gap:28px;margin-top:44px;
}
.guide-card{
  padding:32px 28px;border-radius:12px;
  background:rgba(232,238,250,0.025);
  border-top:2px solid rgba(52,226,255,0.24);
  border-left:1px solid rgba(151,176,220,0.1);
  border-right:1px solid rgba(151,176,220,0.1);
  border-bottom:1px solid rgba(151,176,220,0.1);
}
.guide-card strong{display:block;font-size:16px;font-weight:700;color:var(--text-main);margin-bottom:10px;}
.guide-card p{font-size:13.5px;color:var(--text-body);line-height:1.75;margin-bottom:0;}
.guide-card i{font-size:1.4em;color:var(--cyan);margin-bottom:15px;opacity:0.85;}
.guide-card:hover{background:rgba(15,23,42,0.72);border-left-color:rgba(120,180,255,0.3);}

/* ===== Accordion / FAQ ===== */
.faq-block{
  background:var(--bg-section);
  border-top:1px solid rgba(151,176,220,0.08);
  border-bottom:1px solid rgba(151,176,220,0.08);
}
.faq-wrap{max-width:900px;margin:0 auto;margin-top:34px;}
.faq-item{
  border-bottom:1px solid rgba(151,176,220,0.14);
  padding:0;
}
.faq-item:first-child{border-top:1px solid rgba(151,176,220,0.14);}
.faq-question{
  padding:24px 0;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;cursor:pointer;color:var(--text-main);
  font-size:16px;font-weight:600;
  transition:var(--transition);text-align:left;line-height:1.5;
  background:transparent;width:100%;
}
.faq-question:hover{color:var(--cyan);}
.faq-question .q-mark{
  background:rgba(52,226,255,0.06);color:var(--cyan);
  border:1px solid rgba(52,226,255,0.2);flex:0 0 38px;
  width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:13px;
  transition:var(--transition);
}
.faq-question .faq-q-text{flex:1;}
.faq-question .arrow{
  width:14px;height:14px;flex:0 0 14px;position:relative;
  transition:var(--transition);opacity:0.8;
}
.faq-question .arrow::before,.faq-question .arrow::after{
  content:'';position:absolute;background:currentColor;border-radius:2px;
}
.faq-question .arrow::before{width:14px;height:1.5px;left:0;top:6px;}
.faq-question .arrow::after{width:1.5px;height:14px;left:6px;top:0;transition:var(--transition);transform-origin:center;}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height 0.4s cubic-bezier(0.4,0,0.2,1);
}
.faq-answer .ans-inner{
  padding-bottom:26px;padding-left:52px;
  color:var(--text-body);font-size:14.5px;line-height:1.8;max-width:790px;
}
.faq-question.open .arrow::after{height:0;transform:rotate(90deg);opacity:0;}
.faq-question.open .q-mark{
  background:rgba(52,226,255,0.12);
  border-color:rgba(52,226,255,0.35);
}
.faq-question.open{color:var(--cyan);}

/* ===== Case 图文 B ===== */
.info-panel-grid{
  display:grid;grid-template-columns:1fr 1.2fr;gap:44px;
  align-items:center;margin-top:0;
}
.info-panel{background:rgba(10,19,34,0.5);border-radius:12px;padding:30px;height:100%;border-left:2px solid rgba(52,226,255,0.3);}
.info-panel h3{color:var(--text-main);font-size:17px;border-bottom:1px solid rgba(151,176,220,0.12);margin-bottom:14px;padding-bottom:12px;}
.info-panel ul li{padding:10px 0;line-height:1.75;font-size:14px;display:flex;gap:12px;border-bottom:1px dashed rgba(151,176,220,0.10);}
.info-panel ul li::before{content:'✓';color:var(--cyan);flex:0 0 20px;font-weight:700;text-align:center;margin-top:1px;}

/* ===== Notice bar / Contact ===== */
.contact-block{padding:110px 0 90px;border-bottom:1px solid rgba(151,176,220,0.05);}
.contact-card{
  max-width:1050px;margin:0 auto;
  padding:64px 40px;
  background:
    radial-gradient(circle at 25% 60%,rgba(52,226,255,0.08) 0%,transparent 38%),
    radial-gradient(circle at 80% 30%,rgba(23,107,255,0.13) 0%,transparent 48%),
    var(--glass);
  border:1px solid rgba(151,176,220,0.2);
  border-radius:20px;
  text-align:center;
  position:relative;
  overflow:hidden;
  backdrop-filter:blur(6px);
}
.contact-card::before{
  content:'';position:absolute;inset:0;
  background-image:radial-gradient(rgba(52,226,255,0.28) 1px,transparent 1px);
  background-size:28px 28px;
  opacity:0.16;pointer-events:none;
}
.contact-card h2{position:relative;font-size:32px;color:var(--text-main);margin-bottom:16px;}
.contact-card p{position:relative;max-width:620px;margin:0 auto 36px;color:var(--text-body);}
.btn-wrap{position:relative;}
.btn-wrap .btn{min-width:150px;}
.contact-note{
  font-size:12px;color:var(--text-muted);margin-top:20px;
  letter-spacing:0;
}

/* ===== Footer ===== */
.site-footer{
  padding:70px 0 38px;
  background:var(--bg-root);
  border-top:1px solid rgba(151,176,220,0.14);
}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:46px;margin-bottom:50px;
}
.site-footer .footer-brand{font-size:24px;font-weight:750;color:#fff;margin-bottom:10px;}
.footer-brand a{color:#fff;}
.site-footer .footer-brand-sub{
  color:var(--text-muted);font-size:13px;line-height:1.7;
}

.site-footer h4{
  font-size:14px;color:var(--text-body);margin-bottom:18px;font-weight:600;
  letter-spacing:0.03em;color:var(--text-main);
}
.site-footer h4::after{
  content:'';display:block;width:18px;height:2px;margin-top:8px;
  background:rgba(52,226,255,0.3);border-radius:3px;
}
.site-footer a{
  display:block;padding:6px 0;font-size:14px;color:var(--text-muted);
  text-decoration:none;transition:var(--transition);
}
.site-footer a:hover{color:var(--cyan);text-decoration:none;}
.contact-info p{display:flex;align-items:flex-start;gap:8px;color:var(--text-muted);font-size:13px;}
.contact-info p i{margin-top:5px;color:var(--cyan);width:18px;flex:0 0 18px;text-align:center;}

.footer-bottom{
  border-top:1px solid rgba(151,176,220,0.12);;
  padding-top:28px;
  display:flex;justify-content:space-between;flex-wrap:wrap;
  gap:12px;font-size:13px;color:var(--text-muted);
}

/* ===== ===== Responsive ===== */

@media(max-width:1024px){
  .page-hero h1{font-size:38px;max-width:700px;}
  .split-grid{gap:52px;}
  .ticket-grid{grid-template-columns:repeat(2,1fr);gap:22px;}
  .ticket-card{max-width:100%;}
  .reg-steps{grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(151,176,220,0.09);}
  .reg-step{background:var(--bg-root);}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:24px 40px;}
  .data-grid .d-item+.d-item::before{display:none;}
  .footer-top{grid-template-columns:1fr 1fr;gap:40px;}
}
@media(max-width:768px){
  .site-header{height:64px;padding:0;}
  .nav-bar{height:64px;padding:0 22px;}
  .page-hero{padding:80px 0 60px;}
  .page-hero h1{font-size:30px;}
  .page-hero .hero-sub{font-size:15px;line-height:1.8;}
  .split-grid{grid-template-columns:1fr;gap:38px;}
  .split-media{order:0 !important;}
  .split-media img{min-height:250px;max-height:360px;width:100%;object-fit:cover;}
  .section{padding:86px 0;}
  .split-block{padding:90px 0;}
  .container{padding:0 24px;}
  .section-title-light,.section-title{font-size:27px;}
  .split-content h2{font-size:24px;}
  .split-content p{font-size:14.5px;}
  .reg-steps{grid-template-columns:1fr 1fr;margin-top:30px;gap:0;}
  .reg-step{padding:14px 14px 20px;}
  .reg-step::before{margin-bottom:6px;font-size:12px;}
  .reg-step p{font-size:12px;line-height:1.6;}
  .reg-step h3{font-size:14px;margin-bottom:6px;}
  .ticket-grid{grid-template-columns:1fr;margin-top:44px;}
  .ticket-card{padding:30px 26px;}
  .guide-grid{grid-template-columns:1fr!important;gap:20px;}
  .guide-card p{font-size:13px}
  .info-panel-grid{grid-template-columns:1fr;}
  .hero-actions .btn{flex:1 1 auto;}
  .faq-question{font-size:14.5px;}
  .contact-card{padding:46px 24px;}
  .contact-card h2{font-size:25px;}
  .footer-bottom{flex-direction:column;justify-content:flex-start;gap:10px;}
}
@media(max-width:520px){
  .container{padding:0 20px;}
  .section{padding:68px 0;}
  .page-hero{padding:62px 0 40px;}
  .page-hero h1{font-size:25px;margin-bottom:14px;}
  .meta-item{width:100%;padding:9px 14px;}
  .data-grid{grid-template-columns:1fr;gap:20px;}
  .data-grid .d-item + .d-item::before{display:none;}
  .section-title-light,.section-title{font-size:23px;}
  .hero-actions{flex-direction:column;width:100%;}
  .hero-actions .btn{width:100%;max-width:none;}
  .btn{padding:0 22px;}
  .split-media img{max-height:250px;}
  .split-block{padding:80px 0;}
  .reg-steps{grid-template-columns:1fr;}
  .split-content p{font-size:13.5px;}
  .reg-steps{margin-top:26px;}
  .guide-grid{grid-template-columns:1fr;}
  .tk-price{font-size:30px;}
  .footer-top{grid-template-columns:1fr;gap:26px;}
  .contact-card h2{font-size:21px;}
}