/* roulang page: index */
:root{
  --bg-0:#070B14;
  --bg-1:#0B1220;
  --panel:#101A2E;
  --panel-2:#16223A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(34,224,161,.32);
  --txt-1:#EAF2FF;
  --txt-2:#A9B8D0;
  --txt-3:#6E7E99;
  --brand:#22E0A1;
  --brand-2:#12B98A;
  --accent:#FF6A3D;
  --info:#4CC9F0;
  --ok:#3DDC97;
  --warn:#FFB020;
  --err:#FF5A5F;
  --r-card:16px;
  --r-btn:10px;
  --shadow-1:0 2px 8px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(34,224,161,.35), 0 8px 28px rgba(34,224,161,.28);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--txt-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 12% -8%, rgba(34,224,161,.10), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(76,201,240,.09), transparent 60%),
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,fixed,fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:3px solid rgba(34,224,161,.55);outline-offset:2px;border-radius:6px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* 容器 */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1320px;}}

/* 顶部赛道斜纹 */
.race-line{height:3px;width:100%;background:repeating-linear-gradient(115deg,var(--brand) 0 14px,transparent 14px 26px,rgba(255,106,61,.75) 26px 36px,transparent 36px 48px);opacity:.55;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-size:15px;font-weight:600;letter-spacing:.01em;padding:14px 28px;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease,filter .18s ease;min-height:46px;text-align:center;}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#04231A;box-shadow:var(--glow);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,224,161,.45),0 14px 34px rgba(34,224,161,.34);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--brand);}
.btn-ghost:hover{background:rgba(34,224,161,.10);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14px;position:relative;}
.btn-text::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:100%;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
.btn-text:hover::after{transform:scaleX(1);}
.btn-text span{transition:transform .22s ease;display:inline-block;}
.btn-text:hover span{transform:translateX(4px);}
.btn-sm{padding:10px 20px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;filter:saturate(.4);cursor:not-allowed;transform:none;box-shadow:none;}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;letter-spacing:.04em;padding:4px 12px;border-radius:999px;background:rgba(34,224,161,.12);color:var(--brand);border:1px solid rgba(34,224,161,.22);}
.badge-muted{background:rgba(255,255,255,.05);color:var(--txt-3);border-color:var(--line);}
.badge-warn{background:rgba(255,176,32,.12);color:var(--warn);border-color:rgba(255,176,32,.24);}

/* 卡片 */
.glass-card{background:rgba(22,34,58,.62);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.10);border-radius:var(--r-card);box-shadow:var(--shadow-2);position:relative;overflow:hidden;transition:transform .2s ease,border-color .2s ease;}
.glass-card::before{content:"";position:absolute;inset:0 0 auto 0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.42),transparent);}
.glass-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}
.panel-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);position:relative;transition:transform .2s ease,border-color .2s ease,background .2s ease;}
.panel-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}

/* 头部 */
.site-header{position:sticky;top:0;z-index:60;background:transparent;transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;border-bottom:1px solid transparent;}
.site-header.is-scrolled{background:rgba(7,11,20,.78);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom-color:var(--line);box-shadow:0 12px 32px rgba(0,0,0,.42);}
.nav-brand-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:16px;padding-bottom:16px;}
.nav-brand{display:inline-flex;align-items:center;gap:12px;font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.brand-mark{width:34px;height:34px;border-radius:11px;background:linear-gradient(140deg,var(--brand),var(--brand-2) 55%,#0E8F6C);box-shadow:var(--glow);position:relative;flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;inset:11px 9px;border-left:3px solid rgba(4,35,26,.85);border-bottom:3px solid rgba(4,35,26,.85);}
.brand-text b{font-weight:800;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-search{display:flex;align-items:center;gap:8px;background:var(--bg-1);border:1px solid var(--line);border-radius:999px;padding:0 14px;height:42px;transition:border-color .2s ease,box-shadow .2s ease;}
.nav-search:focus-within{border-color:var(--line-strong);box-shadow:0 0 0 3px rgba(34,224,161,.16);}
.nav-search input{background:transparent;border:0;outline:none;color:var(--txt-1);font-size:14px;width:170px;height:100%;}
.nav-search input::placeholder{color:var(--txt-3);}
.nav-help{font-size:14px;color:var(--txt-2);transition:color .2s ease;}
.nav-help:hover{color:var(--brand);}
.nav-channels-row{border-top:1px solid var(--line);}
.nav-channels{display:flex;align-items:center;gap:10px;padding-top:12px;padding-bottom:12px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;scroll-snap-type:x proximity;}
.nav-channels::-webkit-scrollbar{display:none;}
.channel-chip{flex:0 0 auto;scroll-snap-align:start;padding:8px 18px;border-radius:999px;font-size:14px;font-weight:600;color:var(--txt-2);border:1px solid var(--line);background:transparent;transition:color .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;}
.channel-chip:hover{color:var(--txt-1);border-color:rgba(255,255,255,.18);background:rgba(255,255,255,.04);}
.channel-chip.is-active{background:linear-gradient(135deg,rgba(34,224,161,.92),rgba(18,185,138,.92));color:#04231A;border-color:transparent;box-shadow:var(--glow);}
.nav-cta{white-space:nowrap;}

/* Hero */
.hero{position:relative;overflow:hidden;padding:72px 0 96px;border-bottom:1px solid var(--line);}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.28;filter:saturate(.85);}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,20,.72) 0%,rgba(7,11,20,.88) 58%,var(--bg-0) 100%);}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:48px;align-items:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;padding:6px 14px;border-radius:999px;border:1px solid rgba(34,224,161,.26);background:rgba(34,224,161,.08);}
.hero h1{font-size:clamp(30px,5vw,52px);line-height:1.18;font-weight:800;letter-spacing:-.01em;margin:20px 0 18px;}
.hero-sub{font-size:17px;line-height:1.8;color:var(--txt-2);max-width:620px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:40px;}
.stat-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:18px;transition:border-color .2s ease,transform .2s ease;}
.stat-card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.stat-num{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:30px;font-weight:800;color:var(--brand);line-height:1.1;}
.stat-num .unit{font-size:15px;margin-left:2px;color:var(--txt-2);}
.stat-label{display:block;margin-top:8px;font-size:13px;color:var(--txt-3);letter-spacing:.02em;}

/* Hero 数据卡 */
.hero-card{padding:26px;}
.hc-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.hc-title{font-size:15px;font-weight:700;}
.hc-live{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;color:var(--ok);}
.hc-live i{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(61,220,151,.18);animation:breathe 1.6s ease-in-out infinite;}
@keyframes breathe{0%,100%{opacity:1;}50%{opacity:.45;}}
.hc-list{margin:6px 0 0;}
.hc-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:52px;border-bottom:1px solid var(--line);font-size:14px;}
.hc-list li:last-child{border-bottom:0;}
.hc-k{color:var(--txt-2);}
.hc-v{font-weight:600;font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.hc-v.ok{color:var(--ok);}
.hc-v.warn{color:var(--warn);}
.hc-progress{padding:18px 0 20px;border-top:1px solid var(--line);margin-top:6px;}
.hc-progress-head{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--txt-2);margin-bottom:10px;}
.hc-progress-head .num{color:var(--brand);font-weight:700;font-size:15px;}
.hc-bar{height:8px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;}
.hc-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-2),var(--brand));box-shadow:0 0 14px rgba(34,224,161,.5);}

/* 板块 */
.section{padding:96px 0;position:relative;}
.section-alt{background:linear-gradient(180deg,rgba(11,18,32,.7),rgba(7,11,20,0));}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-title{font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.section-desc{margin-top:12px;color:var(--txt-2);font-size:15px;max-width:640px;}

/* 卖点：1 大 + 2 小 */
.feature-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);grid-template-rows:auto auto;gap:20px;}
.feature-lg{grid-row:1 / span 2;padding:0;overflow:hidden;display:flex;flex-direction:column;}
.feature-lg .fl-media{aspect-ratio:16/10;background:#0C1526;overflow:hidden;position:relative;}
.feature-lg .fl-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.feature-lg:hover .fl-media img{transform:scale(1.04);}
.feature-lg .fl-body{padding:28px;display:flex;flex-direction:column;gap:12px;flex:1;}
.feature-sm{padding:26px;display:flex;gap:18px;align-items:flex-start;}
.icon-tile{flex:0 0 auto;width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:rgba(34,224,161,.12);border:1px solid rgba(34,224,161,.24);color:var(--brand);font-family:var(--font-num);font-weight:800;font-size:16px;}
.icon-tile.alt{background:rgba(76,201,240,.12);border-color:rgba(76,201,240,.24);color:var(--info);}
.card-title{font-size:20px;font-weight:700;line-height:1.4;}
.feature-lg .card-title{font-size:24px;}
.card-text{color:var(--txt-2);font-size:15px;line-height:1.8;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px;}

/* 场景三步 */
.step-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;padding:36px 0;border-top:1px solid var(--line);}
.step-row:first-of-type{border-top:0;padding-top:0;}
.step-row.is-reverse .step-media{order:2;}
.step-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:linear-gradient(140deg,rgba(34,224,161,.08),rgba(12,21,38,.9));position:relative;}
.step-media .frame{aspect-ratio:16/10;overflow:hidden;}
.step-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;}
.step-media:hover img{transform:scale(1.03);}
.step-caption{position:absolute;left:12px;right:12px;bottom:12px;background:rgba(7,11,20,.78);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:12px;padding:10px 14px;font-size:13px;color:var(--txt-2);}
.step-no{display:inline-flex;align-items:center;font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--brand);padding-bottom:14px;}
.step-no::after{content:"";display:inline-block;width:44px;height:1px;background:var(--line-strong);margin-left:12px;}
.step-copy h3{font-size:22px;font-weight:700;line-height:1.45;margin-bottom:12px;}
.step-copy p{color:var(--txt-2);font-size:15px;}
.step-points{margin-top:18px;display:grid;gap:10px;}
.step-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--txt-2);line-height:1.7;}
.step-points li::before{content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;background:var(--brand);transform:rotate(45deg);border-radius:1px;}

/* 最新信息列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{display:flex;flex-direction:column;gap:14px;padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);transition:transform .2s ease,border-color .2s ease,background .2s ease;min-height:230px;}
.news-card:hover{transform:translateY(-2px);border-color:var(--line-strong);background:var(--panel-2);}
.news-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.news-time{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--txt-3);}
.news-title{font-size:18px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;}
.news-card:hover .news-title{color:var(--brand);}
.news-excerpt{font-size:14px;color:var(--txt-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;}
.news-empty{grid-column:1 / -1;border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 24px;text-align:center;color:var(--txt-3);font-size:15px;background:rgba(16,26,46,.5);}
.news-empty .ne-icon{display:block;width:44px;height:44px;margin:0 auto 14px;border-radius:12px;background:rgba(34,224,161,.10);border:1px solid rgba(34,224,161,.22);position:relative;}
.news-empty .ne-icon::after{content:"";position:absolute;inset:14px 12px;border-left:2px solid var(--brand);border-bottom:2px solid var(--brand);opacity:.8;}

/* 数据条 & 评价 */
.evidence-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-bottom:40px;}
.evidence-item{padding:22px;border:1px solid var(--line);border-radius:var(--r-card);background:rgba(16,26,46,.75);}
.evidence-item .num{display:block;font-size:28px;font-weight:800;color:var(--txt-1);}
.evidence-item .lbl{display:block;margin-top:8px;font-size:13px;color:var(--txt-3);}
.quote-rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;scrollbar-width:none;}
.quote-rail::-webkit-scrollbar{display:none;}
.quote-card{flex:0 0 calc((100% - 40px)/3);scroll-snap-align:start;padding:26px;}
.quote-card .q-mark{font-family:var(--font-num);font-size:34px;line-height:1;color:var(--brand);opacity:.65;}
.quote-card blockquote{margin:12px 0 18px;font-size:15px;color:var(--txt-1);line-height:1.85;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.quote-sign{font-size:13px;color:var(--txt-3);display:flex;align-items:center;gap:10px;}
.quote-sign::before{content:"";width:20px;height:1px;background:var(--line-strong);}
.media-note{margin-top:32px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px 32px;font-size:13px;color:var(--txt-3);}
.media-note span{display:inline-flex;align-items:center;gap:8px;}
.media-note span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.7;}

/* FAQ */
.faq-list{display:grid;gap:14px;max-width:920px;}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);overflow:hidden;transition:border-color .2s ease,background .2s ease;}
.faq-item[open]{border-color:var(--line-strong);background:var(--panel-2);position:relative;}
.faq-item[open]::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);box-shadow:0 0 12px rgba(34,224,161,.65);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:16px;font-weight:600;color:var(--txt-1);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"";flex:0 0 auto;width:9px;height:9px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(45deg);transition:transform .2s ease;margin-right:4px;}
.faq-item[open] summary::after{transform:rotate(-135deg);}
.faq-answer{padding:0 24px 22px;color:var(--txt-2);font-size:15px;line-height:1.85;max-width:78ch;}

/* CTA 带 */
.cta-band{position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line-strong);padding:64px 40px;text-align:center;}
.cta-band .cta-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.26;}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(7,11,20,.86),rgba(11,18,32,.94));}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto;}
.cta-inner h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.3;}
.cta-inner p{margin-top:16px;color:var(--txt-2);font-size:15px;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:32px;}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(11,18,32,.6),rgba(7,11,20,.95));padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:inline-flex;align-items:center;gap:12px;font-size:18px;font-weight:700;margin-bottom:16px;}
.footer-text{color:var(--txt-2);font-size:14px;line-height:1.85;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.05em;color:var(--txt-1);margin-bottom:18px;}
.footer-list{display:grid;gap:12px;}
.footer-list a,.footer-list span{font-size:14px;color:var(--txt-2);transition:color .2s ease;}
.footer-list a:hover{color:var(--brand);}
.footer-bottom{margin-top:56px;border-top:1px solid var(--line);padding:24px 0 32px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.footer-copy{font-size:13px;color:var(--txt-3);}
.footer-copy .num{color:var(--txt-2);}
.to-top{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--txt-2);border:1px solid var(--line);border-radius:999px;padding:9px 18px;background:transparent;cursor:pointer;transition:color .2s ease,border-color .2s ease,transform .2s ease;}
.to-top:hover{color:var(--brand);border-color:var(--line-strong);transform:translateY(-2px);}

/* 底部转化条 */
.conversion-bar{position:fixed;right:24px;bottom:24px;z-index:70;display:flex;align-items:center;gap:14px;padding:14px 16px 14px 20px;background:rgba(16,26,46,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.12);border-radius:16px;box-shadow:var(--shadow-2);opacity:0;transform:translateY(18px);pointer-events:none;transition:opacity .28s ease,transform .28s ease;}
.conversion-bar.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.cb-text{font-size:14px;color:var(--txt-2);white-space:nowrap;}
.cb-close{width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--txt-3);font-size:16px;line-height:1;cursor:pointer;transition:color .2s ease,border-color .2s ease;}
.cb-close:hover{color:var(--txt-1);border-color:rgba(255,255,255,.22);}

/* 响应式 */
@media (max-width:1023px){
  .hero{padding:56px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-lg{grid-row:auto;}
  .step-row{grid-template-columns:1fr;gap:24px;padding:28px 0;}
  .step-row.is-reverse .step-media{order:0;}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .evidence-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .quote-card{flex:0 0 calc((100% - 20px)/2);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .section{padding:72px 0;}
  .nav-search{display:none;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .nav-actions .nav-help{display:none;}
  .nav-brand{font-size:17px;}
  .hero-stats{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .evidence-strip{grid-template-columns:1fr;}
  .quote-card{flex:0 0 82%;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .cta-band{padding:48px 22px;}
  .hero-cta .btn{width:100%;}
  .conversion-bar{left:0;right:0;bottom:0;border-radius:16px 16px 0 0;padding:12px 16px calc(12px + env(safe-area-inset-bottom));gap:10px;flex-wrap:wrap;}
  .cb-text{display:none;}
  .cb-main{flex:1 1 auto;min-height:52px;}
  .cb-sub{display:none;}
  .site-footer{margin-top:64px;padding-top:56px;}
}
@media (max-width:479px){
  .hero h1{font-size:28px;}
  .section-title{font-size:22px;}
  .card-title{font-size:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-0:#070B14;
  --bg-1:#0B1220;
  --panel:#101A2E;
  --panel-2:#16223A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(34,224,161,.32);
  --txt-1:#EAF2FF;
  --txt-2:#A9B8D0;
  --txt-3:#6E7E99;
  --brand:#22E0A1;
  --brand-2:#12B98A;
  --accent:#FF6A3D;
  --info:#4CC9F0;
  --ok:#3DDC97;
  --warn:#FFB020;
  --err:#FF5A5F;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(34,224,161,.35), 0 8px 28px rgba(34,224,161,.28);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--txt-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.45;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
.site-header,
main,
.site-footer{position:relative;z-index:1}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.9);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.nav-brand-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:68px;
}
.nav-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--txt-1);
  white-space:nowrap;
}
.nav-brand b{color:var(--brand)}
.brand-mark{
  width:26px;
  height:26px;
  border-radius:8px;
  background:linear-gradient(140deg,var(--brand),var(--brand-2));
  box-shadow:var(--glow);
  position:relative;
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:7px 6px 7px 6px;
  border-radius:2px;
  background:rgba(7,11,20,.85);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:14px;
}
.nav-search input{
  width:212px;
  height:38px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg-1);
  color:var(--txt-1);
  outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search input::placeholder{color:var(--txt-3)}
.nav-search input:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(34,224,161,.25);
}
.nav-help{
  font-size:14px;
  color:var(--txt-2);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.nav-help:hover{color:var(--brand);border-bottom-color:var(--brand)}
.nav-channels-row{
  border-top:1px solid var(--line);
}
.nav-channels{
  display:flex;
  align-items:center;
  gap:10px;
  padding-top:10px;
  padding-bottom:10px;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-channels::-webkit-scrollbar{display:none}
.channel-chip{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--txt-2);
  font-size:14px;
  white-space:nowrap;
  transition:all .2s ease;
}
.channel-chip:hover{
  color:var(--txt-1);
  border-color:var(--line-strong);
  background:rgba(34,224,161,.06);
}
.channel-chip.is-active{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  border-color:transparent;
  color:#05221A;
  font-weight:600;
  box-shadow:var(--glow);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{min-height:38px;padding:8px 18px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#05221A;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--brand);
}
.btn-ghost:hover{background:rgba(34,224,161,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-text{
  padding:0;
  min-height:auto;
  color:var(--brand);
  border:none;
  background:none;
  font-weight:600;
}
.btn-text span{transition:transform .2s ease;display:inline-block}
.btn-text:hover span{transform:translateX(4px)}
.btn:focus-visible,
.channel-chip:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(34,224,161,.45);
}
.btn[disabled],
.btn.is-disabled{
  filter:saturate(.4);
  opacity:.4;
  cursor:not-allowed;
  transform:none;
}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,26,46,.55),rgba(7,11,20,0));
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  padding:16px 0;
  font-size:13px;
  color:var(--txt-3);
}
.breadcrumb a{color:var(--txt-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--txt-3);opacity:.6}
.breadcrumb .current{color:var(--txt-1);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章布局 ---------- */
.article-section{padding:48px 0 72px}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  align-items:start;
}
.article-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:36px 40px 40px;
  box-shadow:var(--shadow-2);
}
.article-head{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:32px}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
}
.badge-brand{background:rgba(34,224,161,.12);color:var(--brand)}
.badge-muted{background:rgba(255,255,255,.05);color:var(--txt-3)}
.article-title{
  margin:16px 0 18px;
  font-size:clamp(26px,3.6vw,38px);
  line-height:1.3;
  font-weight:800;
  color:var(--txt-1);
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:14px;
  color:var(--txt-3);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--txt-3);opacity:.6}
.article-meta .num{color:var(--txt-2)}

.article-lead{
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  background:linear-gradient(180deg,rgba(34,224,161,.06),rgba(16,26,46,0));
  border-radius:12px;
  padding:18px 22px;
  margin-bottom:32px;
}
.article-lead h3{font-size:15px;color:var(--brand);margin-bottom:8px;letter-spacing:.02em}
.article-lead p{font-size:15px;color:var(--txt-2);line-height:1.85}

.article-figure{
  margin:0 0 32px;
  border-radius:16px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel-2);
}
.article-figure .fig-box{aspect-ratio:16 / 9;overflow:hidden}
.article-figure img{width:100%;height:100%;object-fit:cover}
.article-figure figcaption{
  padding:12px 18px;
  font-size:13px;
  color:var(--txt-3);
  border-top:1px solid var(--line);
}

/* ---------- CMS 正文排版 ---------- */
.article-content{font-size:17px;line-height:1.9;color:var(--txt-2);word-break:break-word}
.article-content > * + *{margin-top:18px}
.article-content p{margin:18px 0 0}
.article-content h2{
  position:relative;
  margin:48px 0 18px;
  padding-left:18px;
  font-size:clamp(20px,2.4vw,26px);
  line-height:1.45;
  color:var(--txt-1);
}
.article-content h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.22em;
  bottom:.22em;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  box-shadow:0 0 12px rgba(34,224,161,.55);
}
.article-content h3{
  position:relative;
  margin:34px 0 12px;
  padding-left:16px;
  font-size:20px;
  line-height:1.5;
  color:var(--txt-1);
}
.article-content h3::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--brand);
}
.article-content ul,
.article-content ol{margin:16px 0 0;padding-left:4px}
.article-content li{
  position:relative;
  padding-left:20px;
  margin:10px 0;
}
.article-content ul > li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.72em;
  width:7px;
  height:7px;
  background:var(--brand);
  opacity:.75;
  transform:rotate(45deg);
  border-radius:1px;
}
.article-content ol{counter-reset:item}
.article-content ol > li{counter-increment:item}
.article-content ol > li::before{
  content:counter(item);
  position:absolute;
  left:0;
  top:.1em;
  font-family:var(--mono);
  font-size:13px;
  color:var(--brand);
  font-weight:700;
}
.article-content blockquote{
  margin:26px 0;
  padding:16px 22px;
  border-left:3px solid var(--brand);
  background:rgba(34,224,161,.06);
  border-radius:0 12px 12px 0;
  color:var(--txt-1);
}
.article-content strong{color:var(--txt-1)}
.article-content a{color:var(--brand);border-bottom:1px solid rgba(34,224,161,.4)}
.article-content a:hover{color:#7CF3CB}
.article-content img{
  width:100%;
  border-radius:12px;
  border:1px solid var(--line);
  margin:24px 0;
}
.article-content figure{margin:24px 0}
.article-content figcaption{
  font-size:13px;
  color:var(--txt-3);
  text-align:center;
  margin-top:10px;
}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-content thead th{
  background:rgba(34,224,161,.08);
  color:var(--txt-1);
  font-weight:600;
  text-align:left;
}
.article-content th,
.article-content td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.article-content tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-content tbody tr:last-child td{border-bottom:none}
.article-content code{
  font-family:var(--mono);
  font-size:.92em;
  background:rgba(255,255,255,.06);
  padding:2px 6px;
  border-radius:6px;
  color:var(--brand);
}

/* ---------- 空状态 ---------- */
.empty-state{
  text-align:center;
  padding:56px 24px;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:rgba(16,26,46,.5);
}
.empty-icon{
  width:52px;
  height:52px;
  margin:0 auto 18px;
  border-radius:14px;
  background:rgba(34,224,161,.1);
  border:1px solid var(--line-strong);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand);
  font-size:22px;
}
.empty-state p{color:var(--txt-2);font-size:15px}
.empty-state .btn{margin-top:22px}

/* ---------- 文末 ---------- */
.article-foot{border-top:1px solid var(--line);margin-top:48px;padding-top:28px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .tag-label{font-size:13px;color:var(--txt-3);margin-right:4px}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  font-size:13px;
  color:var(--txt-2);
  transition:all .2s ease;
}
.tag:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(34,224,161,.08)}

.pager{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  margin-top:28px;
}
.pager-card{
  display:block;
  padding:18px 20px;
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--panel-2);
  transition:all .2s ease;
}
.pager-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.pager-card .pager-label{font-size:12px;color:var(--txt-3);letter-spacing:.06em}
.pager-card .pager-title{
  margin-top:8px;
  font-size:15px;
  font-weight:600;
  color:var(--txt-1);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.pager-card.next{text-align:right}

/* ---------- 侧栏 ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px;
}
.side-card h3{
  font-size:14px;
  letter-spacing:.06em;
  color:var(--txt-1);
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(34,224,161,.7);
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow:auto}
.toc-list a{
  position:relative;
  display:block;
  padding:9px 0 9px 14px;
  font-size:14px;
  color:var(--txt-2);
  border-left:2px solid transparent;
  line-height:1.5;
}
.toc-list a:hover{color:var(--txt-1);background:rgba(255,255,255,.03)}
.toc-list a.is-current{
  color:var(--brand);
  border-left-color:var(--brand);
  box-shadow:inset 3px 0 10px -6px rgba(34,224,161,.9);
}
.status-list{display:flex;flex-direction:column;gap:12px}
.status-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:14px;
  color:var(--txt-2);
}
.status-row .num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--txt-1)}
.status-ok{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--ok);
}
.status-ok::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 10px rgba(61,220,151,.8);
}
.side-links{display:flex;flex-direction:column}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  min-height:48px;
  padding:6px 0;
  font-size:14px;
  color:var(--txt-2);
  border-bottom:1px solid var(--line);
}
.side-links a:last-child{border-bottom:none}
.side-links a:hover{color:var(--brand);background:rgba(255,255,255,.03)}
.side-links a span.arrow{color:var(--txt-3);transition:transform .2s ease}
.side-links a:hover span.arrow{transform:translateX(4px);color:var(--brand)}

/* ---------- 相关推荐 ---------- */
.section{padding:72px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(22px,2.8vw,30px);
  color:var(--txt-1);
}
.section-head p{margin-top:8px;font-size:15px;color:var(--txt-3)}
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.news-card:hover{
  transform:translateY(-3px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-2);
}
.news-card .thumb{aspect-ratio:16 / 10;overflow:hidden;background:var(--panel-2)}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.news-title{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--txt-1);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .2s ease;
}
.news-card:hover .news-title{color:var(--brand)}
.news-desc{
  margin-top:12px;
  font-size:14px;
  line-height:1.8;
  color:var(--txt-2);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-more{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--brand);
  display:flex;
  align-items:center;
  gap:6px;
}
.news-more span{transition:transform .2s ease}
.news-card:hover .news-more span{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:16px 24px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--panel);
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{border-color:var(--line-strong);background:rgba(16,26,46,.92)}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:18px 52px 18px 22px;
  font-size:15.5px;
  font-weight:600;
  color:var(--txt-1);
  line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:24px;
  top:50%;
  width:8px;
  height:8px;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;
  top:14px;
  bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-item[open] summary::before{opacity:1;box-shadow:0 0 14px rgba(34,224,161,.6)}
.faq-item .faq-answer{
  padding:0 22px 20px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--txt-2);
}

/* ---------- CTA ---------- */
.cta-band{
  border:1px solid var(--line);
  border-radius:20px;
  padding:44px 40px;
  background:
    linear-gradient(135deg,rgba(34,224,161,.12),rgba(11,18,32,0) 58%),
    var(--panel);
  box-shadow:var(--shadow-2);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);color:var(--txt-1)}
.cta-band p{margin-top:10px;font-size:15px;color:var(--txt-2);max-width:56ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 底部固定转化条 ---------- */
.sticky-cta{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:70;
  display:flex;
  align-items:center;
  gap:16px;
  padding:14px 16px 14px 22px;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(16,26,46,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.sticky-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.sticky-cta .sticky-text{font-size:14px;color:var(--txt-2);max-width:30ch;line-height:1.6}
.sticky-close{
  width:28px;
  height:28px;
  border-radius:8px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--txt-3);
  cursor:pointer;
  line-height:1;
  transition:all .2s ease;
}
.sticky-close:hover{color:var(--txt-1);border-color:var(--line-strong)}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(11,18,32,.6),var(--bg-0));
  padding:64px 0 28px;
  margin-top:24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px 32px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:600;
  color:var(--txt-1);
}
.footer-brand b{color:var(--brand)}
.footer-text{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:var(--txt-3);
  max-width:38ch;
}
.footer-col h4{
  font-size:14px;
  color:var(--txt-1);
  letter-spacing:.04em;
  margin-bottom:16px;
}
.footer-list{display:flex;flex-direction:column;gap:11px}
.footer-list li{font-size:14px;color:var(--txt-3)}
.footer-list a{color:var(--txt-3)}
.footer-list a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
}
.footer-copy{font-size:13px;color:var(--txt-3)}
.footer-copy .num{color:var(--txt-2)}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:38px;
  padding:6px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--txt-2);
  font-size:13px;
  cursor:pointer;
  transition:all .2s ease;
}
.to-top:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(34,224,161,.06)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side-col{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 300px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:1023px){
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-grid{grid-template-columns:minmax(0,1fr)}
  .article-panel{padding:28px 26px 32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .nav-search{display:none}
  .nav-help{display:none}
  .nav-brand{font-size:17px}
  .nav-actions{gap:10px}
  .section{padding:56px 0}
  .article-section{padding:28px 0 48px}
  .article-layout{gap:32px}
  .article-panel{padding:22px 18px 26px}
  .article-title{font-size:24px}
  .article-content{font-size:16px;line-height:1.9}
  .article-content h2{margin-top:36px}
  .article-figure .fig-box{aspect-ratio:3 / 2}
  .pager{grid-template-columns:minmax(0,1fr)}
  .pager-card.next{text-align:left}
  .news-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:28px 22px}
  .side-col{flex-direction:column}
  .sticky-cta{
    left:0;
    right:0;
    bottom:0;
    border-radius:16px 16px 0 0;
    padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));
    justify-content:space-between;
  }
  .sticky-cta .sticky-text{display:none}
  .sticky-cta .btn{flex:1}
  body{padding-bottom:12px}
}
@media (max-width:520px){
  .nav-brand-row{min-height:60px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .breadcrumb .current{max-width:52vw}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (max-width:479px){
  .article-content table{font-size:13.5px}
  .article-content th,
  .article-content td{padding:10px 12px}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B14;
  --bg-1:#0B1220;
  --panel:#101A2E;
  --panel-2:#16223A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(34,224,161,.32);
  --txt-1:#EAF2FF;
  --txt-2:#A9B8D0;
  --txt-3:#6E7E99;
  --brand:#22E0A1;
  --brand-2:#12B98A;
  --accent:#FF6A3D;
  --info:#4CC9F0;
  --ok:#3DDC97;
  --warn:#FFB020;
  --err:#FF5A5F;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(34,224,161,.35),0 8px 28px rgba(34,224,161,.28);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--txt-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700}
p{margin:0}
figure{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,20,.78);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{background:rgba(7,11,20,.92);box-shadow:0 12px 34px rgba(0,0,0,.5)}
.nav-brand-row{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.nav-brand{display:flex;align-items:center;gap:10px;font-size:18px;letter-spacing:.01em;flex:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 6px 18px rgba(34,224,161,.32);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;border-radius:4px;
  border:2px solid rgba(4,20,14,.8);border-right-color:transparent;
}
.brand-text{color:var(--txt-2);font-weight:600}
.brand-text b{color:var(--txt-1);font-weight:800}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-search input{
  width:200px;height:40px;padding:0 14px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:999px;
  color:var(--txt-1);font-size:14px;transition:border-color .2s,box-shadow .2s;
}
.nav-search input::placeholder{color:var(--txt-3)}
.nav-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(34,224,161,.18)}
.nav-help{color:var(--txt-2);font-size:14px;padding:8px 4px;transition:color .2s}
.nav-help:hover{color:var(--brand)}
.nav-channels-row{border-top:1px solid var(--line)}
.nav-channels{
  display:flex;gap:8px;overflow-x:auto;
  padding-top:10px;padding-bottom:10px;
  scrollbar-width:none;
}
.nav-channels::-webkit-scrollbar{display:none}
.channel-chip{
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);background:transparent;
  color:var(--txt-2);font-size:14px;white-space:nowrap;
  transition:color .2s,border-color .2s,background .2s,box-shadow .2s;
}
.channel-chip:hover{color:var(--txt-1);border-color:var(--line-strong);background:rgba(34,224,161,.06)}
.channel-chip.is-active{
  background:var(--brand);color:#04140E;border-color:transparent;font-weight:700;
  box-shadow:0 6px 18px rgba(34,224,161,.3),0 0 0 1px rgba(34,224,161,.35);
}
.nav-cta{flex:none}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 28px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,filter .18s ease;
}
.btn-primary{background:linear-gradient(135deg,#22E0A1,#12B98A);color:#04140E;box-shadow:var(--glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,224,161,.45),0 14px 34px rgba(34,224,161,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(34,224,161,.4),0 6px 16px rgba(34,224,161,.24)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--brand)}
.btn-ghost:hover{background:rgba(34,224,161,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:10px 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;filter:saturate(.5);cursor:not-allowed;transform:none;box-shadow:none}

/* ============ breadcrumb ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:18px}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.45}

/* ============ layout ============ */
main{position:relative;z-index:1}
.page-wrap{padding:40px 0 0}
.cat-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:48px;
  align-items:start;
  padding-bottom:16px;
}
.cat-main{min-width:0}

/* ============ sticky toc ============ */
.toc{position:sticky;top:150px}
.toc-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--txt-3);margin-bottom:14px}
.toc-list a{
  display:block;padding:10px 0 10px 14px;
  border-left:2px solid var(--line);
  color:var(--txt-3);font-size:14px;
  transition:color .2s,border-color .2s,background .2s,text-shadow .2s;
}
.toc-list a:hover{color:var(--txt-1);border-left-color:var(--line-strong);background:rgba(255,255,255,.02)}
.toc-list a.is-current{
  color:var(--brand);border-left-color:var(--brand);
  background:linear-gradient(90deg,rgba(34,224,161,.1),transparent);
  text-shadow:0 0 12px rgba(34,224,161,.45);
  box-shadow:-3px 0 12px -4px rgba(34,224,161,.9);
}

/* ============ page head ============ */
.page-head h1{font-size:clamp(28px,4.2vw,42px);line-height:1.2;letter-spacing:-.01em;max-width:20em}
.lede{margin-top:16px;color:var(--txt-2);font-size:17px;line-height:1.85;max-width:44em}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;font-size:13px;color:var(--txt-3)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  background:rgba(34,224,161,.12);color:var(--brand);border:1px solid rgba(34,224,161,.22);
}
.badge-time{background:transparent;color:var(--txt-3);border-color:var(--line);font-weight:500}
.badge-time .num{color:var(--txt-2)}
.banner-media{
  position:relative;margin-top:26px;
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(34,224,161,.1),rgba(11,18,32,.92));
  aspect-ratio:16/9;
}
.banner-media img{width:100%;height:100%;object-fit:cover;opacity:.88}
.banner-cap{
  position:absolute;left:16px;bottom:16px;right:16px;
  padding:9px 16px;border-radius:999px;
  background:rgba(7,11,20,.74);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  font-size:13px;color:var(--txt-2);
}

/* ============ sections ============ */
.section{margin-top:64px;scroll-margin-top:150px}
.section h2{position:relative;padding-left:14px;font-size:clamp(22px,2.6vw,28px);letter-spacing:-.01em}
.section h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.section-sub{margin-top:14px;color:var(--txt-2);font-size:16px;line-height:1.85;max-width:46em}

/* point cards */
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px}
.point-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:border-color .2s,background .2s,transform .2s,box-shadow .2s;
}
.point-card:hover{border-color:var(--line-strong);background:var(--panel-2);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.point-icon{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  background:rgba(34,224,161,.12);color:var(--brand);
  font-family:var(--mono);font-size:13px;font-weight:700;margin-bottom:14px;
}
.point-card h3{font-size:18px;margin-bottom:8px}
.point-card p{color:var(--txt-2);font-size:15px;line-height:1.8}

/* split: steps + media */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;margin-top:28px;align-items:start}
.step-list{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:8px 24px}
.step-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px dashed var(--line)}
.step-item:last-child{border-bottom:0}
.step-no{
  flex:none;min-width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  font-family:var(--mono);font-weight:700;font-size:14px;color:var(--brand);
  background:rgba(34,224,161,.1);border:1px solid rgba(34,224,161,.22);
}
.step-item h3{font-size:17px;margin-bottom:6px}
.step-item p{color:var(--txt-2);font-size:15px}
.media-card{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--panel);box-shadow:var(--shadow-1)}
.media-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.media-note{padding:14px 16px;border-top:1px solid var(--line);font-size:13px;color:var(--txt-2)}

/* stats */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;margin-top:28px;
}
.stat{background:var(--panel);padding:24px 20px}
.stat b{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:clamp(22px,3vw,30px);color:var(--brand);letter-spacing:-.02em}
.stat span{display:block;margin-top:8px;color:var(--txt-3);font-size:13px}

/* diff rows */
.diff-list{margin-top:26px;display:grid;gap:12px}
.diff-row{
  display:flex;gap:16px;align-items:flex-start;
  padding:18px 20px;background:var(--panel);
  border:1px solid var(--line);border-radius:14px;
  transition:background .2s,border-color .2s;
}
.diff-row:hover{background:var(--panel-2);border-color:var(--line-strong)}
.diff-dot{flex:none;width:8px;height:8px;margin-top:9px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(34,224,161,.65)}
.diff-row strong{display:block;font-size:16px;margin-bottom:4px}
.diff-row p{color:var(--txt-2);font-size:15px}

/* alert cards */
.alert-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:28px}
.alert-card{
  background:var(--panel);border:1px solid rgba(255,90,95,.26);
  border-left:3px solid var(--err);border-radius:14px;padding:20px;
}
.alert-card .tag{font-family:var(--mono);font-size:12px;color:var(--err);letter-spacing:.02em}
.alert-card h3{font-size:16px;margin:10px 0 8px}
.alert-card p{color:var(--txt-2);font-size:15px}

/* faq */
.faq{margin-top:28px;display:grid;gap:12px}
.faq details{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .2s,background .2s;
}
.faq details[open]{border-color:var(--line-strong);background:var(--panel-2)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px 18px 20px;border-left:3px solid transparent;
  font-size:16px;font-weight:600;cursor:pointer;list-style:none;
  transition:border-color .2s,background .2s,color .2s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand)}
.faq details[open] summary{
  border-left-color:var(--brand);
  background:linear-gradient(90deg,rgba(34,224,161,.09),transparent 45%);
}
.faq-arrow{flex:none;color:var(--brand);font-size:13px;transition:transform .25s ease}
.faq details[open] .faq-arrow{transform:rotate(90deg)}
.faq-body{padding:0 22px 20px 20px;color:var(--txt-2);font-size:15px;line-height:1.85}

/* cta band */
.cta-band{
  position:relative;margin-top:72px;padding:40px;border-radius:20px;
  border:1px solid var(--line-strong);overflow:hidden;
  background-image:linear-gradient(120deg,rgba(7,11,20,.92),rgba(7,11,20,.62)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);max-width:22em}
.cta-band p{margin-top:10px;color:var(--txt-2);font-size:15px;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ footer ============ */
.site-footer{position:relative;z-index:1;margin-top:96px;background:var(--bg-1);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px}
.footer-text{margin-top:16px;color:var(--txt-2);font-size:14px;line-height:1.85;max-width:360px}
.footer-col h4{font-size:14px;letter-spacing:.05em;color:var(--txt-1);margin-bottom:16px}
.footer-list li{margin-bottom:10px}
.footer-list a{color:var(--txt-2);font-size:14px;transition:color .2s}
.footer-list a:hover{color:var(--brand)}
.footer-list span{color:var(--txt-3);font-size:14px}
.footer-list .num{color:var(--txt-2)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid var(--line);padding:22px 0 32px;
}
.footer-copy{color:var(--txt-3);font-size:13px}
.footer-copy .num{color:var(--txt-2)}
.to-top{
  min-height:44px;padding:10px 18px;border-radius:999px;
  background:transparent;border:1px solid var(--line);color:var(--txt-2);
  font-size:13px;cursor:pointer;transition:border-color .2s,color .2s,background .2s;
}
.to-top:hover{border-color:var(--line-strong);color:var(--brand);background:rgba(34,224,161,.06)}

/* ============ responsive ============ */
@media (max-width:1023px){
  .cat-layout{grid-template-columns:1fr;gap:28px}
  .toc{position:static;top:auto;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px}
  .toc-title{margin-bottom:12px}
  .toc-list{display:flex;gap:8px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:4px;scrollbar-width:none}
  .toc-list::-webkit-scrollbar{display:none}
  .toc-list li{flex:none}
  .toc-list a{border-left:0;border-bottom:2px solid var(--line);padding:8px 12px;white-space:nowrap;background:none;box-shadow:none;text-shadow:none}
  .toc-list a.is-current{border-bottom-color:var(--brand);background:rgba(34,224,161,.07);border-radius:8px 8px 0 0}
  .toc-list a:hover{border-left-color:transparent;border-bottom-color:var(--line-strong)}
  .split{grid-template-columns:1fr}
  .alert-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .nav-search{display:none}
  .section{margin-top:48px}
  .point-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:28px;margin-top:56px}
  .banner-media{aspect-ratio:4/3}
  .banner-cap{left:12px;right:12px;bottom:12px;font-size:12px}
}
@media (max-width:520px){
  .nav-help{display:none}
  .nav-cta{min-height:40px;padding:9px 14px;font-size:13px}
  .nav-brand{font-size:16px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .page-head h1{font-size:clamp(24px,7vw,30px)}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-0:#070B14;
  --bg-1:#0B1220;
  --panel:#101A2E;
  --panel-2:#16223A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(34,224,161,.32);
  --txt-1:#EAF2FF;
  --txt-2:#A9B8D0;
  --txt-3:#6E7E99;
  --brand:#22E0A1;
  --brand-2:#12B98A;
  --accent:#FF6A3D;
  --info:#4CC9F0;
  --ok:#3DDC97;
  --warn:#FFB020;
  --err:#FF5A5F;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 2px 8px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(34,224,161,.35),0 8px 28px rgba(34,224,161,.28);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--txt-2);
  background:var(--bg-0);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#6bf0c2}
img{max-width:100%;display:block}
button{font-family:inherit}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid rgba(34,224,161,.55);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
main{position:relative;z-index:1}
section{position:relative}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand);text-transform:uppercase;margin-bottom:14px}
.section-head h2{color:var(--txt-1);font-size:clamp(24px,3.2vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--txt-2);font-size:16px}
.stripe-line{height:4px;width:100%;border-radius:2px;opacity:.55;background:repeating-linear-gradient(135deg,var(--brand) 0 8px,transparent 8px 16px)}
.muted{color:var(--txt-3);font-size:13.5px}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(7,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(11,18,32,.92);
  border-bottom-color:rgba(34,224,161,.22);
  box-shadow:0 12px 32px rgba(0,0,0,.45);
}
.nav-brand-row{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.nav-brand{display:inline-flex;align-items:center;gap:12px;color:var(--txt-1);font-size:19px;letter-spacing:-.01em}
.nav-brand:hover{color:var(--txt-1)}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 30px;
  background:linear-gradient(150deg,var(--brand) 0%,var(--brand-2) 55%,#0d6f57 100%);
  box-shadow:0 6px 18px rgba(34,224,161,.32);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px 8px;border-radius:3px;
  background:rgba(7,11,20,.72);
}
.brand-text b{font-weight:800}
.brand-text{font-weight:500;white-space:nowrap}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-search{display:flex;align-items:center}
.nav-search input{
  width:210px;height:40px;padding:0 14px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--txt-1);
  font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease,width .2s ease;
}
.nav-search input::placeholder{color:var(--txt-3)}
.nav-search input:focus{outline:none;border-color:var(--line-strong);box-shadow:0 0 0 3px rgba(34,224,161,.16)}
.nav-help{font-size:14px;color:var(--txt-2)}
.nav-help:hover{color:var(--brand)}
.nav-channels-row{border-top:1px solid var(--line)}
.nav-channels{display:flex;align-items:center;gap:10px;padding-top:10px;padding-bottom:10px;overflow-x:auto;scrollbar-width:none}
.nav-channels::-webkit-scrollbar{display:none}
.channel-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;
  height:38px;padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--txt-2);
  font-size:14px;font-weight:500;
  background:transparent;
  transition:all .2s ease;
}
.channel-chip:hover{color:var(--txt-1);border-color:var(--line-strong);background:rgba(34,224,161,.08)}
.channel-chip.is-active{
  color:#062118;
  font-weight:700;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  border-color:transparent;
  box-shadow:var(--glow);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  padding:14px 28px;
  min-height:46px;
  cursor:pointer;
  text-align:center;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease,opacity .18s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#062118;
  box-shadow:var(--glow);
}
.btn-primary:hover{color:#04150f;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,224,161,.5),0 14px 34px rgba(34,224,161,.36)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(34,224,161,.4),0 6px 16px rgba(34,224,161,.24)}
.btn-ghost{
  background:rgba(255,255,255,.02);
  border-color:var(--line-strong);
  color:var(--brand);
}
.btn-ghost:hover{background:rgba(34,224,161,.1);color:#8ff5d3;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;min-height:40px;font-size:14px;border-radius:999px}
.btn-lg{padding:16px 34px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.4;filter:saturate(.5);cursor:not-allowed;transform:none;box-shadow:none}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14.5px;font-weight:600;
  border-bottom:1px solid transparent;
}
.btn-text span{transition:transform .2s ease}
.btn-text:hover{border-bottom-color:var(--line-strong)}
.btn-text:hover span{transform:translateX(4px)}

/* ---------- badges & cards ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:rgba(34,224,161,.12);
  color:var(--brand);
}
.badge-time{background:rgba(255,255,255,.05);color:var(--txt-3)}
.badge-accent{background:rgba(255,106,61,.14);color:#ff9a78}
.glass-card{
  background:rgba(16,26,46,.62);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  position:relative;
  overflow:hidden;
}
.glass-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);
}
.panel-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.panel-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:0 14px 34px rgba(0,0,0,.45)}

/* ---------- banner ---------- */
.page-banner{
  position:relative;
  min-height:400px;
  display:flex;
  align-items:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.banner-bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.5;
}
.banner-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 380px at 12% 20%,rgba(34,224,161,.16),transparent 62%),
    linear-gradient(180deg,rgba(7,11,20,.72) 0%,rgba(7,11,20,.94) 72%,var(--bg-0) 100%);
}
.banner-inner{padding:56px 24px 60px;max-width:1240px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--txt-3);margin-bottom:20px}
.breadcrumb a{color:var(--txt-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--txt-3);opacity:.7}
.page-banner h1{
  margin:18px 0 0;
  color:var(--txt-1);
  font-size:clamp(30px,5vw,52px);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:900px;
}
.banner-lead{margin-top:16px;max-width:660px;font-size:17px;color:var(--txt-2)}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.banner-points{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}
.banner-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--txt-2)}
.banner-points li::before{
  content:"";width:7px;height:7px;border-radius:2px;flex:0 0 7px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}

/* ---------- stat strip ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:-46px;position:relative;z-index:5}
.stat-card{padding:24px 22px}
.stat-card .stat-num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:30px;font-weight:700;color:var(--brand);line-height:1.2}
.stat-card .stat-label{margin-top:8px;font-size:13px;color:var(--txt-3)}

/* ---------- masonry ---------- */
.masonry{columns:3;column-gap:24px}
.channel-card{
  break-inside:avoid;
  margin:0 0 24px;
  padding:22px;
  display:block;
}
.channel-card .thumb{
  aspect-ratio:16/10;
  border-radius:12px;
  overflow:hidden;
  margin-bottom:18px;
  background:linear-gradient(150deg,rgba(34,224,161,.12),rgba(16,26,46,.9));
  position:relative;
}
.channel-card .thumb img{width:100%;height:100%;object-fit:cover}
.channel-card h3{margin-top:14px;color:var(--txt-1);font-size:21px;font-weight:600;line-height:1.35}
.channel-card p{margin-top:12px;font-size:15.5px;color:var(--txt-2)}
.channel-card .card-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}
.tick-list{margin-top:16px;display:grid;gap:10px}
.tick-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--txt-2)}
.tick-list li::before{
  content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;
  transform:rotate(45deg);
  background:rgba(34,224,161,.55);
}

/* ---------- compare table ---------- */
.table-wrap{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:auto;
  box-shadow:var(--shadow-1);
}
table{width:100%;min-width:720px;border-collapse:collapse;font-size:15px}
caption{caption-side:top;text-align:left;padding:20px 24px 0;color:var(--txt-3);font-size:13.5px}
thead th{
  background:rgba(34,224,161,.08);
  color:var(--txt-1);
  font-size:13.5px;
  font-weight:600;
  letter-spacing:.04em;
  text-align:left;
  padding:16px 22px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
tbody td{
  padding:16px 22px;
  border-bottom:1px solid var(--line);
  color:var(--txt-2);
  vertical-align:top;
}
tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
tbody tr:hover{background:rgba(34,224,161,.05)}
tbody td:first-child{color:var(--txt-1);font-weight:600;white-space:nowrap}
tbody tr:last-child td{border-bottom:none}
.table-note{margin-top:16px;font-size:13.5px;color:var(--txt-3)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step}
.step{position:relative;padding:26px 24px 26px 30px}
.step::before{
  content:"";position:absolute;left:0;top:26px;bottom:26px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(34,224,161,.05));
}
.step .step-no{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--brand)}
.step h3{margin-top:12px;color:var(--txt-1);font-size:20px;font-weight:600}
.step p{margin-top:12px;font-size:15.5px}

/* ---------- timeline / notice ---------- */
.notice-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding:18px 22px;
  border-radius:var(--radius-card);
  background:rgba(76,201,240,.07);
  border:1px solid rgba(76,201,240,.22);
  color:var(--txt-2);
  font-size:14.5px;
}
.notice-bar strong{color:var(--info);font-weight:600}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  transition:background .2s ease,border-color .2s ease;
}
.faq-item[open]{background:var(--panel-2);border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  color:var(--txt-1);
  font-size:16.5px;font-weight:600;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand);opacity:0;transition:opacity .2s ease,box-shadow .2s ease;
}
.faq-item[open] summary::before{opacity:1;box-shadow:0 0 14px rgba(34,224,161,.8)}
.faq-arrow{
  width:22px;height:22px;flex:0 0 22px;border-radius:50%;
  border:1px solid var(--line);position:relative;
  transition:transform .2s ease,border-color .2s ease;
}
.faq-arrow::before,.faq-arrow::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--txt-2);border-radius:2px;
}
.faq-arrow::before{width:9px;height:1.5px;transform:translate(-50%,-50%)}
.faq-arrow::after{width:1.5px;height:9px;transform:translate(-50%,-50%)}
.faq-item[open] .faq-arrow{transform:rotate(90deg);border-color:var(--line-strong)}
.faq-item[open] .faq-arrow::after{opacity:0}
.faq-answer{padding:0 24px 22px 24px;font-size:15.5px;color:var(--txt-2);max-width:780px}

/* ---------- CTA band ---------- */
.cta-band{position:relative;overflow:hidden}
.cta-band .cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.32}
.cta-band .cta-mask{position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,11,20,.94),rgba(11,18,32,.82))}
.cta-inner{position:relative;z-index:2;padding:56px 44px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:30px}
.cta-inner h2{color:var(--txt-1);font-size:clamp(22px,3vw,30px);font-weight:700;max-width:560px;line-height:1.3}
.cta-inner p{margin-top:12px;color:var(--txt-2);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:0;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--bg-1),var(--bg-0));
  padding:72px 0 28px;
  position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:inline-flex;align-items:center;gap:12px;color:var(--txt-1);font-size:18px}
.footer-brand:hover{color:var(--txt-1)}
.footer-text{margin-top:16px;font-size:14.5px;color:var(--txt-3);max-width:380px;line-height:1.85}
.footer-col h4{color:var(--txt-1);font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-list{display:grid;gap:12px}
.footer-list a,.footer-list span{font-size:14.5px;color:var(--txt-2)}
.footer-list span{color:var(--txt-3)}
.footer-list a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.footer-copy{font-size:13.5px;color:var(--txt-3)}
.footer-copy .num{color:var(--txt-2)}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  color:var(--txt-2);
  border-radius:999px;
  padding:10px 18px;font-size:13.5px;cursor:pointer;
  transition:all .2s ease;
  min-height:40px;
}
.to-top:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(34,224,161,.08)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 24px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
  .footer-grid>div:last-child{grid-column:span 3}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .masonry{columns:2}
  .stat-strip{grid-template-columns:repeat(2,1fr);margin-top:-32px}
  .steps{grid-template-columns:1fr}
  .nav-search input{width:170px}
  .page-banner{min-height:360px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .container{padding:0 18px}
  .nav-brand-row{flex-wrap:wrap;min-height:auto;padding-top:14px;padding-bottom:12px;gap:12px}
  .nav-actions{width:100%;justify-content:space-between;gap:10px}
  .nav-search{flex:1 1 auto}
  .nav-search input{width:100%}
  .nav-help{display:none}
  .nav-brand{font-size:17px}
  .masonry{columns:1}
  .stat-strip{grid-template-columns:1fr 1fr;gap:14px;margin-top:-24px}
  .stat-card{padding:18px 16px}
  .stat-card .stat-num{font-size:24px}
  .banner-inner{padding:40px 18px 48px}
  .banner-points{gap:10px 18px}
  .page-banner{min-height:340px}
  .cta-inner{padding:36px 22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid>div:first-child{grid-column:span 2}
  .footer-grid>div:last-child{grid-column:span 2}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .banner-actions .btn{width:100%}
}
@media (max-width:479px){
  body{font-size:16px}
  .stat-strip{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-grid>div:first-child,.footer-grid>div:last-child{grid-column:span 1}
  .channel-chip{height:36px;padding:0 15px;font-size:13.5px}
}