/* roulang page: index */
:root{
  --brand-a:#FF6A3D;--brand-b:#E42E6B;--brand-c:#7B3FF2;
  --grad-main:linear-gradient(100deg,#FF6A3D 0%,#E42E6B 52%,#7B3FF2 100%);
  --ch-1:#FF6A3D;--ch-2:#12BFA5;--ch-3:#FFB020;--ch-4:#7B3FF2;--ch-5:#2CA8E0;--ch-6:#E42E6B;
  --bg:#FFF6F1;--surface:#FFFFFF;--dark:#191021;--ink:#231626;--ink-2:#5C4B5E;--line:rgba(35,22,38,.10);
  --sh-1:0 6px 18px rgba(35,22,38,.07);--sh-2:0 18px 44px rgba(35,22,38,.13);
  --bs-primary:#FF6A3D;--bs-body-bg:#FFF6F1;--bs-body-color:#231626;
  --bs-border-radius:14px;--bs-card-border-radius:20px;
  --bs-link-color:#E42E6B;--bs-link-hover-color:#FF6A3D;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{margin:0;font-family:var(--bs-body-font-family);background:var(--bg);color:var(--ink);font-size:.95rem;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand-b);text-decoration:none;transition:color .2s}
a:hover{color:var(--brand-a)}
h1,h2,h3,h4{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-a);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
.num{font-variant-numeric:tabular-nums;font-family:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace}

/* header */
.site-header{position:sticky;top:12px;z-index:1030;padding:0 20px;margin-top:18px}
.nav-pill{position:relative;max-width:1240px;margin:0 auto;min-height:64px;display:flex;align-items:center;gap:16px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--line);box-shadow:var(--sh-1)}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:1.02rem;white-space:nowrap}
.logo-mark{width:36px;height:36px;flex:none;border-radius:11px;background:var(--grad-main);color:#fff;display:grid;place-items:center;font-size:1.05rem;font-weight:800}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{display:block;padding:9px 14px;border-radius:999px;color:var(--ink-2);font-size:.9rem;font-weight:600;white-space:nowrap}
.nav-links a:hover{background:rgba(255,106,61,.10);color:var(--ink)}
.nav-links a.active{background:var(--grad-main);color:#fff}
.btn-grad{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border:0;border-radius:999px;background:var(--grad-main);background-size:106% 100%;color:#fff;font-weight:700;font-size:.9rem;cursor:pointer;transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s,filter .28s,background-position .28s}
.btn-grad:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.04);background-position:6% 0;box-shadow:0 10px 24px rgba(228,46,107,.28)}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 22px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);font-weight:700;font-size:.9rem;transition:background .28s,border-color .28s,transform .28s}
.btn-ghost:hover{background:rgba(255,106,61,.10);border-color:rgba(255,106,61,.35);color:var(--ink);transform:translateY(-1px)}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:1.05rem;line-height:1;cursor:pointer;place-items:center}
.nav-panel{display:none;position:absolute;left:0;right:0;top:74px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--sh-2);padding:8px}
.nav-panel a{display:flex;align-items:center;min-height:44px;padding:0 16px;border-radius:14px;color:var(--ink);font-weight:600;font-size:.94rem}
.nav-panel a:hover{background:rgba(255,106,61,.10)}
body.nav-open .nav-panel{display:block}

/* sections */
.sec{padding:clamp(48px,6vw,88px) 0}
.sec-head{margin-bottom:32px}
.sec-title{position:relative;padding-left:16px;font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:750;line-height:1.3;margin-bottom:10px}
.sec-title::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:28px;border-radius:2px;background:var(--grad-main)}
.sec-sub{margin:0;color:var(--ink-2);max-width:780px;font-size:.93rem}

/* hero */
.hero{padding:clamp(36px,5vw,68px) 0 clamp(20px,3vw,36px)}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:40px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid rgba(255,106,61,.3);background:rgba(255,106,61,.08);color:#C22B5C;font-size:.78rem;font-weight:700;letter-spacing:.02em}
.hero-h1{font-size:clamp(2.1rem,4.4vw,3.5rem);font-weight:800;line-height:1.16;letter-spacing:-.01em;margin:16px 0 12px}
.h1-grad{background:var(--grad-main);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:1.05rem;font-weight:700;margin:0 0 10px}
.hero-p{color:var(--ink-2);margin:0 0 22px;max-width:46ch}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px}
.progress-label{display:flex;justify-content:space-between;font-size:.8rem;color:var(--ink-2);letter-spacing:.02em;margin-bottom:8px}
.progress-track{height:10px;border-radius:999px;background:rgba(35,22,38,.08);overflow:hidden}
.progress-fill{height:100%;width:85%;border-radius:999px;background:var(--grad-main)}
.hero-media{position:relative;border-radius:24px;overflow:hidden;box-shadow:var(--sh-2)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-badge{position:absolute;left:16px;bottom:16px;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.93);backdrop-filter:blur(6px);font-size:.78rem;font-weight:700;box-shadow:var(--sh-1)}
.hero-badge b{font-family:"DIN Alternate",ui-monospace,monospace;font-size:1rem;background:var(--grad-main);-webkit-background-clip:text;background-clip:text;color:transparent}

/* stats */
.stat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.stat-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px 18px 18px;box-shadow:var(--sh-1);overflow:hidden}
.stat-card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--ch-1)}
.stat-card:nth-child(2)::before{background:var(--ch-2)}
.stat-card:nth-child(3)::before{background:var(--ch-3)}
.stat-card:nth-child(4)::before{background:var(--ch-4)}
.stat-card:nth-child(5)::before{background:var(--ch-5)}
.stat-num{display:flex;align-items:baseline;gap:4px;font-size:clamp(1.8rem,2.4vw,2.3rem);font-weight:800;line-height:1.1}
.stat-unit{font-size:.76rem;font-weight:600;color:var(--ink-2)}
.stat-label{margin:10px 0 0;font-size:.82rem;color:var(--ink-2);line-height:1.55}

/* grids & cards */
.grid{display:grid;gap:20px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.vcard{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--sh-1);transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s}
.vcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.thumb{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:16/9;background:#F3E7E1}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .28s cubic-bezier(.2,.7,.3,1)}
.vcard:hover .thumb img{transform:scale(1.04)}
.badge-q{position:absolute;top:10px;left:10px;padding:2px 10px;border-radius:999px;background:var(--grad-main);color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.02em}
.badge-time{position:absolute;right:10px;bottom:10px;padding:2px 8px;border-radius:8px;background:rgba(25,16,33,.74);color:#fff;font-size:.72rem;font-weight:600}
.vcard h3{font-size:.98rem;font-weight:650;margin:12px 0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.meta{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:.78rem;color:var(--ink-2)}
.tag{padding:2px 9px;border-radius:999px;border:1px solid rgba(123,63,242,.25);background:rgba(123,63,242,.07);color:#6A31DA;font-weight:600;font-size:.74rem}
.pv{font-variant-numeric:tabular-nums;font-family:"DIN Alternate",ui-monospace,monospace}

/* channels */
.ch-list{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.ch-card{position:relative;display:flex;flex-direction:column;min-height:186px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px 18px 18px;box-shadow:var(--sh-1);overflow:hidden;transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s}
.ch-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.ch-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--ch-2)}
.ch-card:nth-child(1)::before{height:6px;background:var(--grad-main)}
.ch-card:nth-child(2)::before{background:var(--ch-2)}
.ch-card:nth-child(3)::before{background:var(--ch-3)}
.ch-card:nth-child(4)::before{background:var(--ch-4)}
.ch-card:nth-child(5)::before{background:var(--ch-5)}
.ch-card:nth-child(1){background:linear-gradient(180deg,rgba(255,106,61,.11),#fff 62%)}
.ch-name{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.ch-desc{margin:0 0 16px;font-size:.84rem;color:var(--ink-2);line-height:1.68}
.ch-count{margin-top:auto;align-self:flex-start;padding:3px 12px;border-radius:999px;background:rgba(35,22,38,.06);font-size:.75rem;font-weight:700;color:var(--ink)}

/* new list */
.new-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.ncard{display:grid;grid-template-columns:40% 1fr;gap:14px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--sh-1);transition:transform .28s,box-shadow .28s}
.ncard:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.nthumb{border-radius:12px;overflow:hidden;aspect-ratio:4/3}
.nthumb img{width:100%;height:100%;object-fit:cover}
.nbody h3{font-size:.95rem;font-weight:650;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nbody p{margin:0;font-size:.78rem;color:var(--ink-2)}

/* compare */
.cmp-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.cmp-table{width:100%;min-width:660px;border-collapse:separate;border-spacing:0;background:var(--surface);border:1px solid var(--line);border-radius:20px;overflow:hidden}
.cmp-table th,.cmp-table td{padding:16px 18px;text-align:center;border-bottom:1px solid var(--line);font-size:.9rem}
.cmp-table thead th{background:rgba(255,106,61,.07);font-weight:700}
.cmp-table tbody th{text-align:left;font-weight:600;color:var(--ink-2)}
.cmp-table tr:last-child th,.cmp-table tr:last-child td{border-bottom:0}
.cmp-mid{box-shadow:inset 2px 0 0 var(--brand-b),inset -2px 0 0 var(--brand-b)}
.yes{background:var(--grad-main);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800;font-size:1.05rem}
.no{color:#B9AEBE;font-weight:700}

/* rank */
.rank-sec{background:var(--dark);color:#fff}
.rank-sec .sec-title{color:#fff}
.rank-sec .sec-sub{color:rgba(255,255,255,.66)}
.rank-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 44px}
.rank-item{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;min-height:60px;padding:0 10px;border-bottom:1px dashed rgba(255,255,255,.14);transition:background .25s,transform .25s}
.rank-item:hover{background:rgba(255,255,255,.07);transform:translateX(2px);border-radius:12px}
.rank-no{width:30px;height:30px;border-radius:999px;display:grid;place-items:center;font-size:.78rem;font-weight:800;border:1px solid rgba(255,255,255,.28);color:rgba(255,255,255,.82)}
.rank-no.top{background:var(--grad-main);border-color:transparent;color:#fff}
.rank-main{min-width:0}
.rank-title{font-size:.94rem;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-cat{font-size:.74rem;color:rgba(255,255,255,.5);margin-top:2px}
.rank-pv{font-size:.85rem;font-variant-numeric:tabular-nums;font-family:"DIN Alternate",ui-monospace,monospace;color:rgba(255,255,255,.85)}

/* milestones */
.ms-row{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.ms-row::before{content:"";position:absolute;left:0;right:0;top:9px;height:2px;background:linear-gradient(90deg,var(--brand-a),var(--brand-b),var(--brand-c),transparent)}
.ms-item{position:relative;padding-top:34px}
.ms-dot{position:absolute;left:0;top:0;width:20px;height:20px;border-radius:999px;background:#fff;border:3px solid var(--brand-b)}
.ms-year{display:block;font-family:"DIN Alternate",ui-monospace,monospace;font-weight:800;font-size:1.05rem;background:var(--grad-main);-webkit-background-clip:text;background-clip:text;color:transparent}
.ms-text{margin:4px 0 0;font-size:.85rem;color:var(--ink-2);line-height:1.6}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--sh-1);transition:transform .28s,box-shadow .28s}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-thumb{aspect-ratio:4/3;overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .28s}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:16px 18px 18px}
.news-body h3{font-size:.95rem;font-weight:650;line-height:1.55;margin-bottom:8px}
.news-date{font-size:.78rem;color:var(--ink-2);font-family:"DIN Alternate",ui-monospace,monospace;letter-spacing:.02em}

/* trust */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-card{background:rgba(255,255,255,.72);border-radius:18px;padding:20px 18px}
.trust-icon{display:grid;place-items:center;width:24px;height:24px;margin-bottom:12px;color:var(--ch-1)}
.trust-icon svg{width:24px;height:24px}
.trust-card:nth-child(2) .trust-icon{color:var(--ch-2)}
.trust-card:nth-child(3) .trust-icon{color:var(--ch-4)}
.trust-card:nth-child(4) .trust-icon{color:var(--ch-5)}
.trust-card h3{font-size:.95rem;font-weight:700;margin-bottom:6px}
.trust-card p{margin:0;font-size:.83rem;color:var(--ink-2);line-height:1.65}

/* quick */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quick-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px 20px 20px}
.quick-card::before{content:"?";position:absolute;left:18px;top:-14px;width:28px;height:28px;border-radius:999px;background:var(--grad-main);color:#fff;font-weight:800;display:grid;place-items:center;font-size:.9rem}
.quick-q{font-size:.96rem;font-weight:700;margin-bottom:8px}
.quick-a{margin:0;font-size:.85rem;color:var(--ink-2);line-height:1.7}

/* faq */
.acc .accordion-item{border:1px solid var(--line);border-radius:18px;background:#fff;margin-bottom:14px;overflow:hidden;box-shadow:var(--sh-1)}
.acc .accordion-button{width:100%;min-height:60px;display:flex;align-items:center;padding:0 22px;font-size:1rem;font-weight:650;color:var(--ink);background:#fff;border:0;box-shadow:none}
.acc .accordion-button:not(.collapsed){color:var(--brand-b);background:linear-gradient(90deg,rgba(228,46,107,.08),rgba(255,255,255,0) 46%);box-shadow:inset 3px 0 0 0 var(--brand-b)}
.acc .accordion-button::after{content:"+";width:auto;height:auto;margin-left:auto;background:none;font-size:1.3rem;font-weight:700;line-height:1;color:var(--ink-2);transform:none}
.acc .accordion-button:not(.collapsed)::after{content:"−";color:var(--brand-b);transform:none}
.acc .accordion-button:focus{outline:none;box-shadow:inset 3px 0 0 0 var(--brand-b)}
.acc .accordion-body{padding:2px 22px 20px;color:var(--ink-2);font-size:.89rem;line-height:1.8}

/* subscribe */
.sub-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:clamp(24px,3vw,40px);box-shadow:var(--sh-1)}
.sub-form{display:grid;grid-template-columns:1fr 1.2fr auto;gap:12px}
.sub-form select,.sub-form input[type="email"]{height:48px;width:100%;border-radius:14px;border:1px solid var(--line);background:#fff;padding:0 16px;font-size:.9rem;color:var(--ink);font-family:inherit}
.sub-form select:focus,.sub-form input[type="email"]:focus{outline:none;border-color:rgba(255,106,61,.55);box-shadow:0 0 0 3px rgba(255,106,61,.12)}
.sub-form button{height:48px}
.sub-note{margin:14px 0 10px;font-size:.8rem;color:var(--ink-2)}
.sub-check{display:flex;align-items:flex-start;gap:8px;font-size:.8rem;color:var(--ink-2);line-height:1.6}
.sub-check input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand-b);flex:none}
.sub-msg{margin:10px 0 0;font-size:.82rem;color:var(--brand-b);font-weight:600;min-height:1.2em}
.sub-art{border-radius:18px;overflow:hidden;aspect-ratio:16/10}
.sub-art img{width:100%;height:100%;object-fit:cover}

/* footer */
.site-footer{position:relative;background:var(--dark);color:rgba(255,255,255,.72);padding-top:clamp(44px,5vw,72px)}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-main)}
.f-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.f-brand .logo{color:#fff}
.f-about{margin:14px 0 0;max-width:34ch;font-size:.85rem;line-height:1.75;color:rgba(255,255,255,.6)}
.f-col h4{font-size:.92rem;font-weight:700;color:#fff;margin-bottom:14px}
.f-col li{margin-bottom:10px}
.f-col a{display:inline-block;min-height:24px;color:rgba(255,255,255,.66);font-size:.86rem}
.f-col a:hover{color:#fff}
.f-col p{margin:0 0 10px;font-size:.84rem;color:rgba(255,255,255,.6)}
.f-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:18px 0 26px;border-top:1px solid rgba(255,255,255,.12);font-size:.8rem;color:rgba(255,255,255,.5)}

@media (max-width:1024px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .nav-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .stat-grid{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(3,1fr)}
  .ch-list{grid-template-columns:repeat(3,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .rank-grid{grid-template-columns:1fr;gap:0}
  .ms-row{grid-template-columns:1fr;gap:0}
  .ms-row::before{left:9px;right:auto;top:0;bottom:0;width:2px;height:auto;background:linear-gradient(180deg,var(--brand-a),var(--brand-b),var(--brand-c),transparent)}
  .ms-item{padding:0 0 26px 34px}
  .ms-dot{left:0;top:4px}
  .sub-wrap{grid-template-columns:1fr}
  .sub-form{grid-template-columns:1fr 1fr}
  .sub-form button{grid-column:1 / -1}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .sec{padding:44px 0}
  .hero-h1{font-size:2.1rem}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .ch-list{grid-template-columns:repeat(2,1fr)}
  .new-list{grid-template-columns:1fr}
  .quick-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .sub-form{grid-template-columns:1fr}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px}
  .grid-4{grid-template-columns:1fr}
  .ch-list{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr}
  .vcard{padding:12px}
  .hero-media{border-radius:18px}
  .hero-actions .btn-grad,.hero-actions .btn-ghost{flex:1 1 100%}
}

/* 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}