/* roulang page: index */
:root {
  --bg-base: #0B1017;
  --bg-panel: #141C26;
  --bg-panel-2: #1B2532;
  --accent: #F5A524;
  --accent-dim: #D18F1F;
  --text-main: #E9EEF4;
  --text-sub: #9AA8B9;
  --text-quiet: #5F6C7D;
  --line: #263140;
  --success: #35C48B;
  --danger: #E45B5B;
  --radius-card: 14px;
  --radius-btn: 10px;
  --shadow-card: 0 8px 28px rgba(0,0,0,.28);
  --shadow-hover: 0 14px 40px rgba(0,0,0,.4);
  --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono: ui-monospace,SFMono-Regular,"Cascadia Code",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-base);
  color:var(--text-main);
  font-family:var(--font-sans);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px}
.container-site{max-width:1320px;margin:0 auto;padding:0 32px}
@media(max-width:576px){.container-site{padding:0 16px}}
.section-pad{padding:100px 0}
@media(max-width:768px){.section-pad{padding:64px 0}}
.section-head{margin-bottom:48px;max-width:720px}
.section-head .tag{display:inline-block;font-family:var(--font-mono);font-size:13px;color:var(--accent);background:rgba(245,165,36,.08);border:1px solid rgba(245,165,36,.25);padding:4px 14px;border-radius:999px;margin-bottom:16px}
.section-head h2{font-size:32px;font-weight:800;line-height:1.35;margin-bottom:14px;letter-spacing:-.5px}
@media(max-width:768px){.section-head h2{font-size:26px}}
.section-head p{color:var(--text-sub);font-size:16px;line-height:1.9}
/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(11,16,23,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-size:26px;font-weight:800;letter-spacing:.5px;display:flex;align-items:center;gap:8px}
.logo .logo-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--accent);color:#0B1017;border-radius:10px;font-size:18px}
.logo .logo-text{color:var(--text-main)}
.logo .logo-text em{color:var(--accent);font-style:normal}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:#0B1017;font-weight:700;font-size:15px;padding:9px 22px;border-radius:var(--radius-btn);border:1px solid transparent;transition:background .2s,transform .2s,box-shadow .2s}
.header-cta:hover{background:#ffbe4d;transform:translateY(-2px);box-shadow:0 6px 20px rgba(245,165,36,.25);color:#0B1017}
.header-cta:active{transform:translateY(0);box-shadow:0 2px 8px rgba(245,165,36,.15)}
.header-cta:focus-visible{outline:3px solid rgba(245,165,36,.3)}
.hamburger{width:44px;height:44px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:var(--bg-panel);border:1px solid var(--line);border-radius:10px;transition:border-color .2s,background .2s}
.hamburger span{width:20px;height:2px;background:var(--text-main);border-radius:2px;transition:all .3s ease}
.hamburger:hover{border-color:var(--accent)}
.hamburger:focus-visible{outline:3px solid rgba(245,165,36,.3)}
/* Drawer */
.drawer-overlay{position:fixed;inset:0;background:rgba(5,8,12,.72);z-index:1100;opacity:0;pointer-events:none;transition:opacity .3s ease}
.drawer-overlay.open{opacity:1;pointer-events:auto}
.nav-drawer{position:fixed;top:0;right:0;width:min(430px,100%);height:100vh;background:var(--bg-panel);z-index:1200;transform:translateX(100%);transition:transform .3s ease-out;display:flex;flex-direction:column;border-left:1px solid var(--line);overflow-y:auto}
.nav-drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:20px 28px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;background:var(--bg-base);border:1px solid var(--line);border-radius:10px;color:var(--text-sub);font-size:20px;transition:all .2s}
.drawer-close:hover{color:var(--accent);border-color:var(--accent)}
.drawer-nav{flex:1;padding:32px 28px}
.drawer-nav ul{list-style:none;display:flex;flex-direction:column;gap:4px}
.drawer-nav .nav-link-drawer{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-radius:12px;font-size:24px;font-weight:700;color:var(--text-main);transition:background .2s,color .2s,transform .2s}
.drawer-nav .nav-link-drawer i{font-size:18px;color:var(--text-quiet);transition:color .2s,transform .2s}
.drawer-nav .nav-link-drawer:hover{background:var(--bg-base);color:var(--accent)}
.drawer-nav .nav-link-drawer:hover i{color:var(--accent);transform:translateX(4px)}
.drawer-nav .nav-link-drawer.active{color:var(--accent)}
.drawer-nav .nav-link-drawer.active i{color:var(--accent)}
.drawer-bottom{padding:24px 28px 32px;border-top:1px solid var(--line)}
.drawer-bottom .drawer-cta{display:block;width:100%;text-align:center;background:var(--accent);color:#0B1017;font-weight:700;font-size:16px;padding:14px 20px;border-radius:12px;border:none;transition:background .2s,transform .2s}
.drawer-bottom .drawer-cta:hover{background:#ffbe4d;transform:translateY(-2px)}
.drawer-bottom .drawer-copy{margin-top:16px;text-align:center;font-size:13px;color:var(--text-quiet)}
/* Hero */
.hero{position:relative;padding:180px 0 100px;background:linear-gradient(120deg,rgba(11,16,23,.97) 0%,rgba(11,16,23,.88) 45%,rgba(11,16,23,.55) 100%),url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;border-bottom:1px solid var(--line)}
@media(max-width:768px){.hero{padding:140px 0 64px}}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
@media(max-width:992px){.hero-grid{grid-template-columns:1fr;gap:40px}}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:13px;color:var(--accent);background:rgba(245,165,36,.08);border:1px solid rgba(245,165,36,.25);padding:6px 16px;border-radius:999px;margin-bottom:24px}
.hero-badge i{font-size:14px}
.hero h1{font-size:52px;font-weight:800;line-height:1.25;letter-spacing:-1px;margin-bottom:20px;color:var(--text-main)}
@media(max-width:768px){.hero h1{font-size:34px}}
.hero h1 .hl{color:var(--accent);position:relative}
.hero-sub{font-size:18px;color:var(--text-sub);line-height:2;max-width:520px;margin-bottom:32px}
@media(max-width:768px){.hero-sub{font-size:16px}}
.hero-join-row{display:flex;align-items:center;gap:14px;margin-bottom:28px;padding:14px 20px;background:rgba(20,28,38,.85);border:1px solid var(--line);border-radius:12px;max-width:440px}
.hero-join-row .join-avatars{display:flex;flex-direction:row}
.hero-join-row .join-avatars .avatar{width:36px;height:36px;border-radius:50%;border:2px solid var(--bg-panel);margin-left:-10px;display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#0B1017}
.hero-join-row .join-avatars .avatar:first-child{margin-left:0}
.hero-join-row .join-text{font-size:14px;color:var(--text-sub);line-height:1.5}
.hero-join-row .join-text strong{color:var(--accent);font-family:var(--font-mono);font-size:16px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:32px}
.btn-accent{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#0B1017;font-weight:700;font-size:16px;padding:13px 32px;border-radius:var(--radius-btn);border:none;transition:all .2s}
.btn-accent:hover{background:#ffbe4d;transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,165,36,.3);color:#0B1017}
.btn-accent:active{transform:translateY(0);box-shadow:0 2px 8px rgba(245,165,36,.15)}
.btn-accent:focus-visible{outline:3px solid rgba(245,165,36,.3)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--text-main);font-weight:600;font-size:16px;padding:13px 28px;border-radius:var(--radius-btn);border:1px solid var(--line);transition:all .2s}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(245,165,36,.04)}
.btn-ghost:focus-visible{outline:3px solid rgba(245,165,36,.3)}
.hero-trust{display:flex;flex-wrap:wrap;gap:20px;font-size:13px;color:var(--text-quiet)}
.hero-trust span{display:inline-flex;align-items:center;gap:6px}
.hero-trust i{color:var(--accent);font-size:14px}
.hero-card{background:var(--bg-panel);border:1px solid var(--line);border-radius:18px;padding:36px 32px;box-shadow:var(--shadow-card);position:relative;overflow:hidden}
@media(max-width:768px){.hero-card{padding:28px 20px}}
.hero-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),transparent)}
.hero-card .card-label{font-family:var(--font-mono);font-size:12px;color:var(--text-quiet);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.hero-card .group-num{font-family:var(--font-mono);font-size:48px;font-weight:700;color:var(--accent);line-height:1.1}
.hero-card .group-num small{font-size:16px;color:var(--text-sub);font-weight:400}
.hero-card .group-status{display:flex;justify-content:space-between;align-items:center;margin:18px 0 8px;font-size:14px;color:var(--text-sub)}
.hero-card .progress{height:8px;background:var(--bg-base);border-radius:999px;overflow:hidden;margin-bottom:24px}
.hero-card .progress-bar{background:linear-gradient(90deg,var(--accent-dim),var(--accent));border-radius:999px;transition:width .8s ease}
.hero-card .group-ctas{display:flex;flex-direction:column;gap:12px}
.hero-card .group-ctas .btn-accent,.hero-card .group-ctas .btn-ghost{justify-content:center}
.hero-card .group-note{text-align:center;font-size:12px;color:var(--text-quiet);margin-top:16px}
.hero-card .card-perks{display:flex;justify-content:space-between;margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
.hero-card .card-perks .perk{text-align:center;flex:1}
.hero-card .card-perks .perk i{font-size:20px;color:var(--accent);display:block;margin-bottom:6px}
.hero-card .card-perks .perk span{font-size:12px;color:var(--text-sub)}
/* Resource Track */
.resource-track{background:var(--bg-base);position:relative}
.track-scroll{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin}
@media(max-width:992px){.track-scroll{grid-template-columns:repeat(3,1fr)}}
@media(max-width:576px){.track-scroll{grid-template-columns:repeat(2,1fr)}}
.track-card{background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px 24px;transition:transform .25s,border-color .25s,box-shadow .25s;display:flex;flex-direction:column;min-height:220px}
.track-card:hover{transform:translateY(-6px);border-color:var(--accent);box-shadow:var(--shadow-hover)}
.track-card .t-icon{width:52px;height:52px;border-radius:14px;background:rgba(245,165,36,.08);border:1px solid rgba(245,165,36,.25);display:inline-flex;align-items:center;justify-content:center;font-size:24px;color:var(--accent);margin-bottom:18px}
.track-card h3{font-size:18px;font-weight:700;margin-bottom:10px;line-height:1.5}
.track-card p{font-size:14px;color:var(--text-sub);line-height:1.8;flex:1}
.track-card .t-link{display:inline-flex;align-items:center;gap:4px;font-size:14px;font-weight:600;color:var(--accent);margin-top:16px;transition:gap .2s}
.track-card .t-link:hover{gap:8px}
/* Stats */
.stats-band{background:var(--bg-panel-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:70px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
@media(max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr);row-gap:40px}}
@media(max-width:576px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
.stat-item{text-align:center;padding:0 16px;position:relative}
.stat-item:not(:last-child)::after{content:'';position:absolute;right:0;top:50%;transform:translateY(-50%);width:1px;height:52px;background:var(--line)}
@media(max-width:768px){.stat-item:nth-child(2)::after{display:none}}
.stat-item .num{font-family:var(--font-mono);font-size:48px;font-weight:700;color:var(--accent);line-height:1.1;letter-spacing:-1px}
@media(max-width:576px){.stat-item .num{font-size:36px}}
.stat-item .label{font-size:13px;color:var(--text-sub);margin-top:8px}
/* Hot Recommend */
.hot-section{background:var(--bg-base)}
.hot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
@media(max-width:768px){.hot-grid{grid-template-columns:1fr}}
.hot-card{background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s;display:flex;flex-direction:column}
.hot-card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:var(--shadow-hover)}
.hot-card .hot-cover{position:relative;overflow:hidden;aspect-ratio:16/9}
.hot-card .hot-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.hot-card:hover .hot-cover img{transform:scale(1.04)}
.hot-card .hot-tag{position:absolute;top:14px;left:14px;background:rgba(11,16,23,.85);color:var(--accent);font-size:12px;font-weight:600;padding:4px 14px;border-radius:999px;border:1px solid rgba(245,165,36,.3)}
.hot-card .hot-body{padding:24px 24px 20px;flex:1;display:flex;flex-direction:column}
.hot-card .hot-body h3{font-size:20px;font-weight:700;line-height:1.5;margin-bottom:10px}
.hot-card .hot-body p{font-size:14px;color:var(--text-sub);line-height:1.8;flex:1}
.hot-card .hot-meta{display:flex;gap:16px;font-size:13px;color:var(--text-quiet);margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.hot-card .hot-meta span{display:inline-flex;align-items:center;gap:4px}
.hot-card .hot-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);margin-top:12px}
.hot-card .hot-link:hover{gap:10px}
.hot-card.featured{border-color:rgba(245,165,36,.4);position:relative}
.hot-card.featured::before{content:'精选';position:absolute;top:14px;right:14px;z-index:2;background:var(--accent);color:#0B1017;font-size:12px;font-weight:700;padding:4px 14px;border-radius:999px}
@media(max-width:768px){.hot-card.featured::before{top:14px;right:14px}}
/* Category Zone */
.cat-section{background:var(--bg-base);border-top:1px solid var(--line)}
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:992px){.cat-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:768px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:576px){.cat-grid{grid-template-columns:repeat(2,1fr);gap:12px}}
.cat-card{display:block;background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:all .25s;aspect-ratio:4/3;position:relative}
.cat-card img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.cat-card .cat-mask{position:absolute;inset:0;background:linear-gradient(to top,rgba(11,16,23,.92) 0%,rgba(11,16,23,.35) 60%,transparent 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:18px}
.cat-card .cat-name{font-size:16px;font-weight:700;color:var(--text-main);margin-bottom:2px}
.cat-card .cat-count{font-size:12px;color:var(--text-sub)}
.cat-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.cat-card:hover img{transform:scale(1.06)}
/* News */
.news-section{background:var(--bg-base);border-top:1px solid var(--line)}
.news-layout{display:grid;grid-template-columns:1fr 340px;gap:44px}
@media(max-width:992px){.news-layout{grid-template-columns:1fr}}
.news-list{display:flex;flex-direction:column}
.news-item{display:flex;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);transition:background .2s}
.news-item:first-child{padding-top:0}
.news-item:last-child{border-bottom:none}
.news-item .news-date{flex-shrink:0;width:64px;text-align:center;padding-top:4px}
.news-item .news-date .d{font-family:var(--font-mono);font-size:24px;font-weight:700;color:var(--accent);line-height:1}
.news-item .news-date .m{font-size:12px;color:var(--text-quiet);margin-top:4px}
.news-item .news-content h3{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:6px}
.news-item .news-content h3 a{transition:color .2s}
.news-item .news-content h3 a:hover{color:var(--accent)}
.news-item .news-content p{font-size:14px;color:var(--text-sub);line-height:1.75}
.news-sidebar{display:flex;flex-direction:column;gap:32px}
.side-widget{background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px}
.side-widget h4{font-size:16px;font-weight:700;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px}
.side-widget h4 i{color:var(--accent)}
.side-top-list{list-style:none;display:flex;flex-direction:column}
.side-top-list li{padding:10px 0;border-bottom:1px solid rgba(38,49,64,.5)}
.side-top-list li:last-child{border-bottom:none}
.side-top-list li a{display:flex;align-items:baseline;gap:12px;font-size:14px;color:var(--text-sub);transition:color .2s}
.side-top-list li a:hover{color:var(--accent)}
.side-top-list .rank{font-family:var(--font-mono);font-size:18px;font-weight:700;color:var(--accent);flex-shrink:0}
.side-tags{display:flex;flex-wrap:wrap;gap:8px}
.side-tags a{display:inline-block;font-size:13px;color:var(--text-sub);background:var(--bg-base);border:1px solid var(--line);padding:5px 14px;border-radius:999px;transition:all .2s}
.side-tags a:hover{color:var(--accent);border-color:var(--accent);background:rgba(245,165,36,.04)}
/* FAQ */
.faq-section{background:var(--bg-base);border-top:1px solid var(--line)}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-accordion{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--bg-panel);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .25s}
.faq-item:hover{border-color:rgba(245,165,36,.35)}
.faq-item.active{border-color:rgba(245,165,36,.5)}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;cursor:pointer;font-size:17px;font-weight:700;color:var(--text-main);transition:color .2s}
.faq-q .faq-icon{position:relative;width:24px;height:24px;flex-shrink:0;margin-left:16px}
.faq-q .faq-icon::before,.faq-q .faq-icon::after{content:'';position:absolute;background:var(--accent);border-radius:2px;transition:all .3s ease}
.faq-q .faq-icon::before{top:11px;left:2px;width:20px;height:2px}
.faq-q .faq-icon::after{top:2px;left:11px;width:2px;height:20px}
.faq-item.active .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease;padding:0 24px;color:var(--text-sub);font-size:15px;line-height:1.9}
.faq-item.active .faq-a{max-height:500px;padding:0 24px 20px}
/* Contact */
.contact-section{background:var(--bg-panel-2);border-top:1px solid var(--line);position:relative}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px}
@media(max-width:992px){.contact-grid{grid-template-columns:1fr}}
.contact-info h2{font-size:32px;font-weight:800;margin-bottom:16px}
@media(max-width:768px){.contact-info h2{font-size:26px}}
.contact-info .desc{color:var(--text-sub);font-size:15px;line-height:1.9;margin-bottom:28px}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:18px;margin-bottom:28px}
.contact-list li{display:flex;align-items:center;gap:14px;font-size:15px;color:var(--text-sub)}
.contact-list li i{width:42px;height:42px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;background:var(--bg-panel);border:1px solid var(--line);border-radius:10px;color:var(--accent);font-size:17px}
.contact-list li strong{color:var(--text-main);font-weight:600;display:block;font-size:14px}
.contact-form-card{background:var(--bg-panel);border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:var(--shadow-card)}
@media(max-width:576px){.contact-form-card{padding:24px 20px}}
.form-label{font-size:14px;font-weight:600;color:var(--text-main);margin-bottom:6px;display:block}
.form-control-custom{width:100%;background:var(--bg-base);border:1px solid var(--line);border-radius:var(--radius-btn);padding:12px 16px;color:var(--text-main);font-size:15px;transition:border-color .2s,box-shadow .2s}
.form-control-custom:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(245,165,36,.12)}
.form-control-custom::placeholder{color:var(--text-quiet)}
select.form-control-custom{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239AA8B9' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px}
.form-control-custom.error{border-color:var(--danger)}
.form-error-msg{color:var(--danger);font-size:13px;margin-top:4px;display:none}
.form-success{display:none;background:rgba(53,196,139,.1);border:1px solid rgba(53,196,139,.35);color:var(--success);border-radius:10px;padding:14px 18px;font-size:14px;margin-top:16px}
.form-success.show{display:block}
/* Footer */
.site-footer{background:#070A0F;border-top:1px solid var(--line);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
@media(max-width:992px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:576px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-sub);line-height:1.9;max-width:280px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--text-main)}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:14px;color:var(--text-sub);transition:color .2s,padding-left .2s}
.footer-col ul a:hover{color:var(--accent);padding-left:4px}
.footer-contact-list{display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--text-sub)}
.footer-contact-list li{display:flex;align-items:center;gap:10px}
.footer-contact-list i{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--line);padding:24px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--text-quiet)}
.footer-bottom a{color:var(--text-sub)}
.footer-bottom a:hover{color:var(--accent)}
/* Focus accessibility */
a:focus-visible{outline:3px solid rgba(245,165,36,.3);outline-offset:2px}
/* Utility */
.text-accent{color:var(--accent)!important}
.bg-panel{background:var(--bg-panel)!important}
.mb-0{margin-bottom:0!important}

/* roulang page: category1 */
:root{
--bg-base:#0B1017;--bg-panel:#141C26;--bg-panel-2:#1B2532;--accent:#F5A524;--accent-dim:#D18F1F;
--text-main:#E9EEF4;--text-sub:#9AA8B9;--text-quiet:#5F6C7D;--line:#263140;
--success:#35C48B;--danger:#E45B5B;--radius-card:14px;--radius-btn:10px;
--shadow-card:0 8px 28px rgba(0,0,0,.28);--shadow-hover:0 14px 40px rgba(0,0,0,.4);
--font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
--font-mono:ui-monospace,SFMono-Regular,"Cascadia Code",Menlo,monospace;
}
html{scroll-behavior:smooth}
body{background:var(--bg-base);color:var(--text-main);font-family:var(--font-sans);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
*{box-sizing:border-box;margin:0;padding:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px}
.container-site{max-width:1320px;margin:0 auto;padding:0 32px}
.section-pad{padding:100px 0}
.section-head{margin-bottom:48px;max-width:720px}
.section-head .tag{display:inline-block;font-family:var(--font-mono);font-size:13px;color:var(--accent);background:rgba(245,165,36,.08);border:1px solid rgba(245,165,36,.25);padding:4px 14px;border-radius:999px;margin-bottom:16px}
.section-head h2{font-size:32px;font-weight:800;line-height:1.35;margin-bottom:14px;letter-spacing:-.5px;color:var(--text-main)}
.section-head p{color:var(--text-sub);font-size:16px;line-height:1.9}
/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(11,16,23,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-size:26px;font-weight:800;letter-spacing:.5px;display:flex;align-items:center;gap:8px}
.logo .logo-mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--accent);color:#0B1017;border-radius:10px;font-size:18px}
.logo .logo-text{color:var(--text-main)}
.logo .logo-text em{color:var(--accent);font-style:normal}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:#0B1017;font-weight:700;font-size:15px;padding:9px 22px;border-radius:var(--radius-btn);border:1px solid transparent;transition:background .2s,transform .2s,box-shadow .2s}
.header-cta:hover{background:#ffbe4d;transform:translateY(-2px);box-shadow:0 6px 20px rgba(245,165,36,.25);color:#0B1017}
.header-cta:active{transform:translateY(0);box-shadow:0 2px 8px rgba(245,165,36,.15)}
.header-cta:focus-visible{outline:3px solid rgba(245,165,36,.3)}
.hamburger{width:44px;height:44px;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:var(--bg-panel);border:1px solid var(--line);border-radius:10px;transition:border-color .2s,background .2s}
.hamburger span{width:20px;height:2px;background:var(--text-main);border-radius:2px;transition:all .3s ease}
.hamburger:hover{border-color:var(--accent)}
.hamburger:focus-visible{outline:3px solid rgba(245,165,36,.3)}
/* Drawer */
.drawer-overlay{position:fixed;inset:0;background:rgba(5,8,12,.72);z-index:1100;opacity:0;pointer-events:none;transition:opacity .3s ease}
.drawer-overlay.open{opacity:1;pointer-events:auto}
.nav-drawer{position:fixed;top:0;right:0;width:min(430px,100%);height:100vh;background:var(--bg-panel);z-index:1200;transform:translateX(100%);transition:transform .3s ease-out;display:flex;flex-direction:column;border-left:1px solid var(--line);overflow-y:auto}
.nav-drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:20px 28px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;background:var(--bg-base);border:1px solid var(--line);border-radius:10px;color:var(--text-sub);font-size:20px;transition:all .2s}
.drawer-close:hover{color:var(--accent);border-color:var(--accent)}
.drawer-nav{flex:1;padding:32px 28px}
.drawer-nav ul{display:flex;flex-direction:column;gap:4px}
.drawer-nav .nav-link-drawer{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-radius:12px;font-size:24px;font-weight:700;color:var(--text-main);transition:background .2s,color .2s,transform .2s}
.drawer-nav .nav-link-drawer i{font-size:18px;color:var(--text-quiet);transition:color .2s,transform .2s}
.drawer-nav .nav-link-drawer:hover{background:var(--bg-base);color:var(--accent)}
.drawer-nav .nav-link-drawer:hover i{color:var(--accent);transform:translateX(4px)}
.drawer-nav .nav-link-drawer.active{color:var(--accent)}
.drawer-nav .nav-link-drawer.active i{color:var(--accent)}
.drawer-bottom{padding:24px 28px 32px;border-top:1px solid var(--line)}
.drawer-bottom .drawer-cta{display:block;width:100%;text-align:center;background:var(--accent);color:#0B1017;font-weight:700;font-size:16px;padding:14px 20px;border-radius:12px;border:none;transition:background .2s,transform .2s}
.drawer-bottom .drawer-cta:hover{background:#ffbe4d;transform:translateY(-2px)}
.drawer-bottom .drawer-copy{margin-top:16px;text-align:center;font-size:13px;color:var(--text-quiet)}
/* Buttons */
.btn-accent{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#0B1017;font-weight:700;font-size:16px;padding:13px 30px;border-radius:var(--radius-btn);border:1px solid transparent;transition:background .2s,transform .2s,box-shadow .2s}
.btn-accent:hover{background:#ffbe4d;transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,165,36,.3);color:#0B1017}
.btn-accent:active{transform:translateY(0)}
.btn-accent:focus-visible{outline:3px solid rgba(245,165,36,.4)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;background:var(--bg-panel);color:var(--text-main);font-weight:600;font-size:15px;padding:12px 26px;border-radius:var(--radius-btn);border:1px solid var(--line);transition:all .2s}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-ghost:focus-visible{outline:3px solid rgba(245,165,36,.3)}
/* Category Banner */
.category-banner{position:relative;padding:160px 0 70px;background:linear-gradient(90deg,rgba(11,16,23,.97) 0%,rgba(11,16,23,.85) 50%,rgba(11,16,23,.5) 100%),url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;border-bottom:1px solid var(--line)}
.banner-wrap{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;position:relative;z-index:2}
.breadcrumb-custom{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-sub);margin-bottom:18px}
.breadcrumb-custom a{color:var(--text-sub);transition:color .2s}
.breadcrumb-custom a:hover{color:var(--accent)}
.breadcrumb-custom i{font-size:12px;color:var(--text-quiet)}
.breadcrumb-custom span{color:var(--text-main)}
.banner-left h1{font-size:46px;font-weight:800;line-height:1.25;letter-spacing:-1px;color:var(--text-main);margin-bottom:16px}
.banner-left h1 .hl{color:var(--accent)}
.banner-left p{color:var(--text-sub);font-size:17px;max-width:640px;line-height:1.9}
.banner-right{flex-shrink:0}
/* List Section */
.main-listing{padding:70px 0 0}
.resource-item{display:flex;gap:20px;background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:16px;margin-bottom:16px;transition:border-color .25s,box-shadow .25s,transform .25s;align-items:center}
.resource-item:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.resource-item .thumb{width:160px;height:120px;flex-shrink:0;border-radius:10px;overflow:hidden}
.resource-item .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.resource-item:hover .thumb img{transform:scale(1.04)}
.resource-item .info{flex:1;min-width:0}
.resource-item .title-row{display:flex;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap}
.resource-item .title-row h3{font-size:19px;font-weight:700;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge-cat{display:inline-block;font-size:12px;color:var(--accent);background:rgba(245,165,36,.1);border:1px solid rgba(245,165,36,.25);padding:2px 12px;border-radius:999px;font-weight:600}
.resource-item .desc{color:var(--text-sub);font-size:14px;line-height:1.7;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.resource-item .meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.resource-item .meta span{font-size:13px;color:var(--text-quiet);display:inline-flex;align-items:center;gap:5px}
.resource-item .meta i{font-size:14px}
.resource-item .meta .download-num{color:var(--accent)}
.resource-action .btn-sm-accent{display:inline-flex;align-items:center;gap:6px;background:rgba(245,165,36,.12);border:1px solid rgba(245,165,36,.35);color:var(--accent);font-size:14px;font-weight:600;padding:7px 18px;border-radius:999px;transition:all .2s}
.resource-action .btn-sm-accent:hover{background:var(--accent);color:#0B1017}
/* Pagination */
.pagination-custom{display:flex;justify-content:center;gap:8px;margin-top:40px}
.pagination-custom a,.pagination-custom span{display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:42px;padding:0 10px;background:var(--bg-panel);border:1px solid var(--line);border-radius:8px;color:var(--text-sub);font-size:15px;font-weight:600;transition:all .2s}
.pagination-custom a:hover{border-color:var(--accent);color:var(--accent)}
.pagination-custom .current{background:var(--accent);color:#0B1017;border-color:var(--accent);font-weight:700}
/* Sidebar */
.sidebar-panel{background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;margin-bottom:24px}
.sidebar-title{font-size:18px;font-weight:700;color:var(--text-main);margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px}
.sidebar-title i{color:var(--accent)}
.rank-item{display:flex;gap:14px;align-items:flex-start;padding:13px 0;border-bottom:1px solid rgba(38,49,64,.5)}
.rank-item:last-child{border-bottom:none}
.rank-num{font-family:var(--font-mono);font-size:24px;font-weight:700;color:var(--accent);line-height:1.2;min-width:32px}
.rank-content a{color:var(--text-main);font-size:15px;font-weight:600;line-height:1.6;transition:color .2s;display:block}
.rank-content a:hover{color:var(--accent)}
.rank-content .rank-meta{font-size:13px;color:var(--text-quiet);margin-top:4px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{display:inline-block;padding:6px 16px;border-radius:999px;background:var(--bg-base);border:1px solid var(--line);color:var(--text-sub);font-size:14px;transition:all .2s}
.tag-cloud a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
/* Feature */
.feature-section{background:var(--bg-panel-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:32px 26px;transition:border-color .25s,transform .25s,box-shadow .25s;height:100%}
.feature-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-card .feature-icon{width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:rgba(245,165,36,.1);border:1px solid rgba(245,165,36,.3);border-radius:14px;color:var(--accent);font-size:24px;margin-bottom:18px}
.feature-card h3{font-size:18px;font-weight:700;color:var(--text-main);margin-bottom:10px}
.feature-card p{color:var(--text-sub);font-size:14px;line-height:1.8}
/* Process */
.process-section{padding:100px 0}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;counter-reset:step}
.process-step{position:relative;padding:30px 24px;background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-card);text-align:center;transition:border-color .25s,transform .25s}
.process-step:hover{border-color:var(--accent);transform:translateY(-4px)}
.process-step .step-num{font-family:var(--font-mono);font-size:30px;font-weight:700;color:var(--accent);margin-bottom:12px;display:block}
.process-step h3{font-size:17px;font-weight:700;color:var(--text-main);margin-bottom:8px}
.process-step p{color:var(--text-sub);font-size:14px;line-height:1.7}
/* FAQ */
.faq-section{padding:100px 0;background:var(--bg-base);border-top:1px solid var(--line)}
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-custom .accordion-item{background:var(--bg-panel);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;box-shadow:none}
.accordion-custom .accordion-button{background:var(--bg-panel);color:var(--text-main);font-weight:700;font-size:17px;padding:20px 24px;border:none;box-shadow:none;transition:color .2s}
.accordion-custom .accordion-button:not(.collapsed){color:var(--accent);background:var(--bg-panel-2)}
.accordion-custom .accordion-button:focus{box-shadow:none;outline:2px solid rgba(245,165,36,.3);outline-offset:-1px}
.accordion-custom .accordion-button::after{background-image:none;font-family:"bootstrap-icons";content:"\F4FE";font-size:20px;color:var(--accent);transition:transform .3s;width:auto;height:auto}
.accordion-custom .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-custom .accordion-body{background:var(--bg-panel);color:var(--text-sub);font-size:15px;line-height:1.95;padding:0 24px 22px}
/* CTA Strip */
.cta-section{padding:80px 0 100px}
.cta-strip{background:var(--bg-panel-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:56px;display:flex;align-items:center;justify-content:space-between;gap:40px;position:relative;overflow:hidden}
.cta-strip::before{content:"";position:absolute;top:0;right:0;width:280px;height:280px;background:radial-gradient(circle,rgba(245,165,36,.12) 0%,transparent 65%);border-radius:50%}
.cta-strip .cta-text{position:relative;z-index:2}
.cta-strip h2{font-size:26px;font-weight:800;color:var(--text-main);margin-bottom:8px}
.cta-strip p{color:var(--text-sub);font-size:15px}
.cta-strip .btn-accent{position:relative;z-index:2;flex-shrink:0}
/* Footer */
.site-footer{background:#070A0F;border-top:1px solid var(--line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{font-size:24px;margin-bottom:12px}
.footer-brand p{color:var(--text-sub);font-size:14px;line-height:1.8;margin-top:14px;max-width:280px}
.footer-col h4{color:var(--text-main);font-size:16px;font-weight:700;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--text-sub);font-size:14px;transition:color .2s}
.footer-col ul a:hover{color:var(--accent)}
.footer-contact-list li{color:var(--text-sub);font-size:14px;display:flex;align-items:center;gap:8px}
.footer-contact-list i{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;flex-wrap:wrap;color:var(--text-quiet);font-size:13px}
.footer-bottom a{color:var(--text-sub);transition:color .2s}
.footer-bottom a:hover{color:var(--accent)}
/* Responsive */
@media(max-width:1200px){
.feature-grid{grid-template-columns:repeat(2,1fr)}
.process-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:992px){
.container-site{padding:0 24px}
.section-pad{padding:70px 0}
.banner-wrap{flex-direction:column;align-items:flex-start}
.banner-left h1{font-size:36px}
.footer-grid{grid-template-columns:1fr 1fr}
.resource-item{flex-direction:row}
.main-listing .content-side,.main-listing .sidebar-side{margin-bottom:40px}
}
@media(max-width:768px){
.resource-item{flex-direction:column;align-items:flex-start}
.resource-item .thumb{width:100%;height:180px}
.resource-item .action-wrap{width:100%;display:flex;justify-content:flex-end}
.banner-left h1{font-size:30px}
.feature-grid{grid-template-columns:1fr}
.process-grid{grid-template-columns:1fr}
.cta-strip{flex-direction:column;padding:36px 24px;text-align:center}
.cta-strip p{margin-bottom:8px}
.banner-right{width:100%}
.banner-right .btn-accent{width:100%;justify-content:center}
.pagination-custom{flex-wrap:wrap}
}
@media(max-width:576px){
.container-site{padding:0 16px}
.section-head h2{font-size:26px}
.header-cta{display:none}
.footer-grid{grid-template-columns:1fr}
.footer-bottom{flex-direction:column;gap:8px;text-align:center}
.category-banner{padding:140px 0 50px}
.banner-left h1{font-size:27px}
.banner-left p{font-size:15px}
.resource-item .thumb{height:160px}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}