/* roulang page: index */
:root{
  --bg:#0F1113;
  --panel:#171A1D;
  --line:#2A2F33;
  --brand:#FF6A2B;
  --brand-hover:#FF8348;
  --brand-press:#E2551A;
  --steel:#6E8087;
  --hud:#C8F04C;
  --warn:#FF3B30;
  --text:#E8EAEA;
  --muted:#A7B0B3;
  --r-card:8px;
  --r-btn:6px;
  --r-chip:999px;
  --shadow:0 1px 0 rgba(255,255,255,.04), 0 12px 32px rgba(0,0,0,.45);
  --font-sans:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
blockquote,figure,figcaption{margin:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* 容器与区块 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1280px){.container{padding:0 32px}}
.section{padding:64px 0}
@media (min-width:768px){.section{padding:96px 0}}
.band{background:var(--panel)}
.band-soft{background:linear-gradient(180deg,#0F1113 0%,#141719 100%)}

/* 板块标题 */
.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--hud);margin-bottom:12px}
.sec-eyebrow::before{content:"";width:18px;height:1px;background:var(--hud);opacity:.7}
.sec-title{font-size:clamp(22px,3vw,32px)}
.sec-desc{margin-top:14px;max-width:800px;color:var(--muted);font-size:15px;line-height:1.8}
.sec-head{margin-bottom:32px}
@media (min-width:768px){.sec-head{margin-bottom:44px}}

/* 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;padding:12px 22px;border:1px solid transparent;cursor:pointer;transition:transform .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,box-shadow .18s ease-out}
.btn-primary{background:var(--brand);color:#15100C;box-shadow:0 1px 0 rgba(255,255,255,.08)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.28),0 10px 26px rgba(0,0,0,.45)}
.btn-primary:active{background:var(--brand-press);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:rgba(255,106,43,.08);transform:translateY(-2px)}
.btn-ghost:active{background:rgba(255,106,43,.14);transform:translateY(0)}
.btn-line{background:transparent;border-color:var(--line);color:var(--text)}
.btn-line:hover{border-color:var(--brand);color:var(--brand)}
.btn:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--hud);outline-offset:2px}
.btn-sm{padding:9px 16px;font-size:14px}

/* 标签与 chip */
.chip{display:inline-flex;align-items:center;gap:6px;padding:7px 15px;border-radius:var(--r-chip);border:1px solid var(--steel);color:var(--muted);font-size:13px;white-space:nowrap;transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out}
.chip:hover{border-color:var(--brand);color:var(--text);background:rgba(255,106,43,.06)}
.chip.is-active{border-color:var(--brand);color:var(--brand);box-shadow:inset 0 -2px 0 var(--brand)}
.tag{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-chip);border:1px solid var(--line);background:rgba(255,255,255,.02);color:var(--muted);font-size:12px;line-height:1.6}
.tag-hud{border-color:rgba(200,240,76,.35);color:var(--hud)}
.dot-live{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--warn);box-shadow:0 0 0 3px rgba(255,59,48,.16)}

/* 顶栏 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(15,17,19,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand-row{display:flex;align-items:center;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:-.01em;flex:none}
.brand-mark{width:26px;height:26px;color:var(--brand);flex:none}
.main-nav{display:none;gap:2px;margin-left:12px}
@media (min-width:1024px){.main-nav{display:flex}}
.main-nav a{padding:8px 12px;border-radius:6px;font-size:15px;color:var(--muted);transition:color .18s ease-out,background-color .18s ease-out}
.main-nav a:hover{color:var(--text);background:rgba(255,255,255,.045)}
.main-nav a.is-active{color:var(--brand);background:rgba(255,106,43,.08)}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{display:none;align-items:center;gap:8px;padding:7px 14px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-chip);transition:border-color .18s ease-out,box-shadow .18s ease-out}
@media (min-width:1024px){.search-box{display:flex}}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px rgba(255,106,43,.22)}
.search-box svg{width:15px;height:15px;color:var(--steel);flex:none}
.search-box input{width:168px;background:transparent;border:0;outline:none;font-size:14px}
.search-box input::placeholder{color:var(--steel)}
.header-cta{display:none}
@media (min-width:768px){.header-cta{display:inline-flex}}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:6px;background:transparent;border:1px solid var(--line);color:var(--text);cursor:pointer}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
@media (min-width:1024px){.nav-toggle{display:none}}

/* 分类横滑 chip 行 */
.chip-row-wrap{position:relative;border-top:1px solid var(--line)}
.chip-row-wrap::after{content:"";position:absolute;top:0;right:0;width:56px;height:100%;background:linear-gradient(90deg,rgba(15,17,19,0),rgba(15,17,19,.96));pointer-events:none}
.chip-row{display:flex;gap:8px;overflow-x:auto;padding:10px 56px 12px 0;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none}
.chip-row::-webkit-scrollbar{display:none}
.chip-row>*{scroll-snap-align:start}
.mobile-nav{display:none;border-top:1px solid var(--line);padding:8px 0 14px}
.mobile-nav.is-open{display:block}
.mobile-nav a{display:block;padding:11px 4px;font-size:15px;color:var(--muted);border-bottom:1px solid rgba(42,47,51,.7)}
.mobile-nav a:last-child{border-bottom:0}
.mobile-nav a.is-active{color:var(--brand)}
@media (min-width:1024px){.mobile-nav{display:none!important}}

/* Hero */
.hero{position:relative;display:flex;align-items:flex-end;min-height:70vh;padding:120px 0 44px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;z-index:0}
.hero-mask{position:absolute;inset:0;z-index:1;background:
  linear-gradient(180deg,rgba(15,17,19,.55) 0%,rgba(15,17,19,.74) 44%,rgba(15,17,19,.97) 100%),
  linear-gradient(90deg,rgba(15,17,19,.9) 0%,rgba(15,17,19,.34) 72%)}
.hero .container{position:relative;z-index:2;width:100%}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-chip);border:1px solid rgba(200,240,76,.35);background:rgba(15,17,19,.6);font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--hud);margin-bottom:18px}
.hero h1{font-size:clamp(30px,5vw,54px);max-width:820px}
.hero-lead{margin-top:18px;max-width:720px;color:#CFD6D6;font-size:16px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hud-bar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:34px;padding-top:20px;border-top:1px solid rgba(42,47,51,.9)}
.hud-num{display:block;font-family:var(--font-mono);font-size:clamp(20px,3vw,28px);font-weight:700;color:var(--hud);letter-spacing:.08em;line-height:1.2}
.hud-label{display:block;margin-top:4px;font-size:13px;color:var(--muted)}
@media (max-width:767px){
  .hero{min-height:0;padding:96px 0 36px}
  .hero-lead{font-size:15px}
}

/* 通用卡片 */
.card{position:relative;display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out}
.card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0C0E0F}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:16px 18px 18px}
.card-title{font-size:17px;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{margin-top:8px;font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--steel)}
.mono{font-family:var(--font-mono);letter-spacing:.08em}
.card:hover .card-title{color:var(--brand)}
.clip-corner{clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,14px 100%,0 calc(100% - 14px))}

/* 痛点编号卡 */
.pain-card{padding:22px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);transition:border-color .18s ease-out,transform .18s ease-out}
.pain-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.pain-num{font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--hud);letter-spacing:.08em;line-height:1}
.pain-card h3{margin-top:14px;font-size:17px}
.pain-card p{margin-top:8px;font-size:14px;color:var(--muted)}

/* 图文交错 */
.split{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media (min-width:900px){.split{grid-template-columns:1fr 1fr;gap:48px}}
.split+.split{margin-top:56px}
@media (min-width:900px){
  .split-rev .split-text{order:2}
  .split-rev .split-media{order:1}
}
.split-media img{width:100%;border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel)}
.tick-list{margin-top:18px;display:grid;gap:10px}
.tick-list li{position:relative;padding-left:22px;font-size:15px;color:var(--muted)}
.tick-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border:1px solid var(--hud);border-radius:2px;background:rgba(200,240,76,.14)}

/* 时间轴步骤 */
.timeline{display:grid;grid-template-columns:1fr;gap:16px;counter-reset:step}
@media (min-width:768px){.timeline{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}}
.timeline li{position:relative;padding:22px 20px 20px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);transition:border-color .18s ease-out,transform .18s ease-out}
.timeline li:hover{border-color:var(--brand);transform:translateY(-2px)}
.tl-num{font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;color:var(--hud)}
.timeline li h3{margin-top:10px;font-size:17px}
.timeline li p{margin-top:8px;font-size:14px;color:var(--muted)}
.tl-rule{margin:22px 0 0;height:1px;background:repeating-linear-gradient(90deg,var(--line) 0 10px,transparent 10px 20px)}
@media (max-width:767px){.tl-rule{display:none}}

/* 数据成果 */
.result-item{padding:22px;border:1px solid var(--line);border-radius:var(--r-card);background:#121517}
.result-num{display:block;font-family:var(--font-mono);font-size:clamp(26px,4vw,36px);font-weight:700;color:var(--hud);letter-spacing:.08em;line-height:1.15}
.result-label{display:block;margin-top:6px;font-size:14px;color:var(--muted)}
.bar{height:4px;margin-top:16px;border-radius:999px;background:#23272A;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-hover));border-radius:999px}

/* 用户评价 */
.voice-card{padding:20px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);transition:border-color .18s ease-out,transform .18s ease-out}
.voice-card:hover{border-color:var(--brand);transform:translateY(-2px)}
.voice-card img{width:46px;height:46px;border-radius:8px;object-fit:cover;border:1px solid var(--line)}
.voice-card blockquote{margin-top:14px;font-size:15px;line-height:1.8}
.voice-card figcaption{margin-top:14px;font-size:13px;color:var(--muted)}
@media (min-width:768px){
  .voice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:start}
  .voice-card:nth-child(2){margin-top:34px}
  .voice-card:nth-child(3){margin-top:16px}
}

/* 适用人群 */
.scene-card{padding:20px;border:1px dashed var(--steel);border-radius:var(--r-card);background:transparent;transition:border-color .18s ease-out,background-color .18s ease-out}
.scene-card:hover{border-color:var(--brand);background:rgba(255,106,43,.05)}
.scene-card h3{font-size:17px}
.scene-card p{margin-top:8px;font-size:14px;color:var(--muted)}

/* 榜单 */
.rank-list li+li{margin-top:12px}
.rank-item{display:grid;grid-template-columns:auto 96px 1fr auto;gap:16px;align-items:center;padding:14px 16px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);transition:border-color .18s ease-out,transform .18s ease-out}
.rank-item:hover{border-color:var(--brand);transform:translateY(-2px)}
.rank-no{font-family:var(--font-mono);font-size:18px;font-weight:700;color:var(--hud);letter-spacing:.08em;min-width:26px}
.rank-thumb{width:96px;aspect-ratio:16/10;border-radius:6px;overflow:hidden;background:#0C0E0F}
.rank-thumb img{width:100%;height:100%;object-fit:cover}
.rank-item h3{font-size:16px;font-weight:600}
.rank-item p{margin-top:5px;font-size:13px;color:var(--muted)}
.rank-arrow{color:var(--steel);font-family:var(--font-mono);font-size:14px}
.rank-item:hover .rank-arrow{color:var(--brand)}
@media (max-width:640px){
  .rank-item{grid-template-columns:auto 1fr;grid-template-areas:"no title" ". text";gap:6px 12px}
  .rank-no{grid-area:no}
  .rank-thumb{display:none}
  .rank-item h3{grid-area:title}
  .rank-item p{grid-area:text}
  .rank-arrow{display:none}
}

/* 多端适配 */
.device-card{padding:22px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel)}
.device-card h3{font-size:17px}
.device-card p{margin-top:8px;font-size:14px;color:var(--muted)}
.device-frame{margin-top:16px;height:96px;border:1px solid var(--line);border-radius:6px;background:
  linear-gradient(180deg,#101315,#0C0E0F);position:relative;overflow:hidden}
.device-frame span{position:absolute;left:10px;right:10px;height:5px;border-radius:3px;background:#22272A}
.device-frame span:nth-child(1){top:16px;width:60%;background:rgba(255,106,43,.55)}
.device-frame span:nth-child(2){top:30px}
.device-frame span:nth-child(3){top:44px;width:76%}
.device-frame span:nth-child(4){top:58px;width:44%;background:rgba(200,240,76,.4)}

/* 更新动态 */
.up-list li{display:grid;grid-template-columns:118px 1fr;gap:16px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--line)}
.up-list li:last-child{border-bottom:0}
.up-date{font-family:var(--font-mono);font-size:13px;color:var(--hud);letter-spacing:.08em}
.up-list a{font-size:15px;transition:color .18s ease-out}
.up-list a:hover{color:var(--brand)}
@media (max-width:520px){
  .up-list li{grid-template-columns:1fr;gap:4px}
}

/* 指标卡 */
.metric-card{position:relative;padding:22px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel)}
.metric-card::before,.metric-card::after{content:"";position:absolute;width:12px;height:12px;border:1px solid var(--hud);opacity:.5}
.metric-card::before{top:-1px;left:-1px;border-right:0;border-bottom:0}
.metric-card::after{bottom:-1px;right:-1px;border-left:0;border-top:0}
.metric-card .m-num{font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--hud);letter-spacing:.08em;line-height:1.2}
.metric-card .m-label{margin-top:6px;font-size:14px;color:var(--muted)}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel);padding:0 18px}
.faq-item+.faq-item{margin-top:12px}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;font-size:16px;font-weight:600;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-family:var(--font-mono);font-size:20px;color:var(--brand);transition:transform .2s ease-out;flex:none}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item p{padding-bottom:18px;font-size:15px;color:var(--muted);line-height:1.8}

/* 表单 */
.subscribe-form{display:flex;flex-direction:column;gap:12px;max-width:560px;margin-top:22px}
@media (min-width:640px){.subscribe-form{flex-direction:row}}
.field{flex:1;display:flex;align-items:center;padding:0 16px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-btn);transition:border-color .18s ease-out,box-shadow .18s ease-out}
.field:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px rgba(255,106,43,.24)}
.field input{width:100%;height:48px;background:transparent;border:0;outline:none;font-size:15px}
.field input::placeholder{color:var(--steel)}
.form-note{margin-top:12px;font-size:13px;color:var(--steel)}
.form-note.is-warn{color:var(--warn)}

/* 结尾 CTA */
.cta-panel{position:relative;overflow:hidden;border:1px solid var(--brand);border-radius:var(--r-card);padding:36px 24px;background:
  linear-gradient(180deg,rgba(255,106,43,.1),rgba(23,26,29,.96)),
  url('/assets/images/backpic/back-2.jpg') center/cover no-repeat}
.cta-panel::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,17,19,.9),rgba(15,17,19,.55));pointer-events:none}
.cta-inner{position:relative;z-index:2;max-width:720px}
.cta-inner h2{font-size:clamp(22px,3vw,30px)}
.cta-inner p{margin-top:14px;color:#CFD6D6;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
@media (min-width:768px){.cta-panel{padding:52px 44px}}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:#0C0E10}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 36px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-grid h4{font-size:14px;letter-spacing:.04em;color:var(--text);margin-bottom:14px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700}
.footer-about{margin-top:12px;font-size:14px;color:var(--muted);max-width:320px}
.footer-links li+li{margin-top:9px}
.footer-links a{font-size:14px;color:var(--muted);transition:color .18s ease-out}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0 28px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--steel)}

/* roulang page: category1 */
:root{
  --bg:#0F1113;
  --panel:#171A1D;
  --line:#2A2F33;
  --brand:#FF6A2B;
  --brand-hover:#FF8348;
  --brand-press:#E2551A;
  --steel:#6E8087;
  --hud:#C8F04C;
  --warn:#FF3B30;
  --text:#E8EAEA;
  --muted:#A7B0B3;
  --r-card:8px;
  --r-btn:6px;
  --r-chip:999px;
  --shadow:0 1px 0 rgba(255,255,255,.04), 0 12px 32px rgba(0,0,0,.45);
  --font-sans:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.28}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 16px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

.section{padding:56px 0}
@media(min-width:768px){.section{padding:88px 0}}
.band{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--hud);margin-bottom:12px}
.sec-eyebrow::before{content:"";width:18px;height:1px;background:var(--hud);opacity:.7}
.sec-title{font-size:clamp(22px,3vw,32px)}
.sec-lead{margin-top:12px;color:var(--muted);font-size:15px;max-width:66ch}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-size:15px;font-weight:600;padding:12px 22px;border:1px solid transparent;cursor:pointer;transition:transform .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,box-shadow .18s ease-out}
.btn-primary{background:var(--brand);color:#15100C;box-shadow:0 1px 0 rgba(255,255,255,.08)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-2px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.28),0 10px 26px rgba(0,0,0,.45)}
.btn-primary:active{background:var(--brand-press);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:rgba(255,106,43,.08);transform:translateY(-2px)}
.btn-ghost:active{background:rgba(255,106,43,.14);transform:translateY(0)}
.btn-line{background:transparent;border-color:var(--line);color:var(--text)}
.btn-line:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--hud);outline-offset:2px}

.chip{display:inline-flex;align-items:center;gap:6px;padding:7px 15px;border-radius:var(--r-chip);border:1px solid var(--steel);color:var(--muted);font-size:13px;white-space:nowrap;transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out}
.chip:hover{border-color:var(--brand);color:var(--text);background:rgba(255,106,43,.06)}
.chip.is-active{border-color:var(--brand);color:var(--brand);box-shadow:inset 0 -2px 0 var(--brand)}
.tag{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-chip);border:1px solid var(--line);background:rgba(255,255,255,.02);color:var(--muted);font-size:12px;line-height:1.6}
.tag-hud{border-color:rgba(200,240,76,.35);color:var(--hud)}

/* 顶栏 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(15,17,19,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand-row{display:flex;align-items:center;gap:12px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;letter-spacing:-.01em;flex:none}
.brand-mark{width:26px;height:26px;color:var(--brand);flex:none}
.main-nav{display:none;gap:2px;margin-left:6px}
@media(min-width:900px){.main-nav{display:flex}}
.main-nav a{padding:8px 12px;border-radius:6px;font-size:15px;color:var(--muted);transition:color .18s ease-out,background-color .18s ease-out}
.main-nav a:hover{color:var(--text);background:rgba(255,255,255,.045)}
.main-nav a.is-active{color:var(--brand);background:rgba(255,106,43,.08)}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{display:none;align-items:center;gap:8px;padding:7px 14px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-chip);transition:border-color .18s ease-out,box-shadow .18s ease-out}
@media(min-width:640px){.search-box{display:flex}}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px rgba(255,106,43,.22)}
.search-box svg{width:15px;height:15px;color:var(--steel);flex:none}
.search-box input{width:150px;background:transparent;border:0;outline:none;font-size:14px}
@media(min-width:1100px){.search-box input{width:186px}}
.search-box input::placeholder{color:var(--steel)}
.header-cta{display:none}
@media(min-width:820px){.header-cta{display:inline-flex}}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:6px;background:transparent;border:1px solid var(--line);color:var(--text);cursor:pointer;transition:border-color .18s ease-out,color .18s ease-out}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
@media(min-width:900px){.nav-toggle{display:none}}
.mobile-nav{display:none;border-top:1px solid var(--line);padding:6px 0 14px}
.mobile-nav.is-open{display:block}
.mobile-nav a{display:block;padding:11px 4px;font-size:15px;color:var(--muted);border-bottom:1px solid rgba(42,47,51,.7)}
.mobile-nav a:last-child{border-bottom:0}
.mobile-nav a.is-active{color:var(--brand)}
@media(min-width:900px){.mobile-nav{display:none!important}}
.chip-row-wrap{position:relative;border-top:1px solid var(--line)}
.chip-row-wrap::after{content:"";position:absolute;top:0;right:0;width:56px;height:100%;background:linear-gradient(90deg,rgba(15,17,19,0),rgba(15,17,19,.96));pointer-events:none}
.chip-row{display:flex;gap:8px;overflow-x:auto;padding:10px 56px 12px 0;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none}
.chip-row::-webkit-scrollbar{display:none}
.chip-row>*{scroll-snap-align:start}

/* 分类头部 */
.cat-hero{padding-top:36px;padding-bottom:28px}
.cat-hero-grid{display:grid;gap:24px;align-items:start}
@media(min-width:1024px){.cat-hero-grid{grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr);gap:40px}}
.breadcrumb{display:flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;color:var(--steel)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span[aria-current]{color:var(--muted)}
.cat-title{font-size:clamp(28px,4.6vw,46px);margin-top:14px;font-weight:700}
.cat-desc{margin-top:14px;color:var(--muted);max-width:64ch}
.cat-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.stat-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;position:relative;box-shadow:var(--shadow)}
.stat-panel::before,.stat-panel::after{content:"";position:absolute;width:12px;height:12px;opacity:.35;pointer-events:none}
.stat-panel::before{top:8px;left:8px;border-top:1px solid var(--hud);border-left:1px solid var(--hud)}
.stat-panel::after{bottom:8px;right:8px;border-bottom:1px solid var(--hud);border-right:1px solid var(--hud)}
.stat-panel h2{font-size:14px;color:var(--muted);font-weight:600;letter-spacing:.02em}
.stat-item{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line)}
.stat-item:last-child{border-bottom:0;padding-bottom:0}
.stat-item:first-of-type{padding-top:16px}
.stat-label{font-size:13.5px;color:var(--steel)}
.stat-value{font-family:var(--font-mono);font-size:19px;color:var(--hud);letter-spacing:.06em}
.stat-value small{font-size:12px;color:var(--muted);font-family:var(--font-sans);letter-spacing:0;margin-left:4px}

/* 筛选条 */
.filter-bar{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:16px 18px;display:grid;gap:12px}
.filter-group{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding-bottom:2px}
.filter-group::-webkit-scrollbar{display:none}
.filter-label{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--steel);flex:none;width:44px}

/* 卡片网格 */
.grid-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:24px}
.card-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(min-width:1280px){.card-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.v-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out}
.v-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow)}
.v-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:#101315}
.v-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out}
.v-card:hover .v-thumb img{transform:scale(1.03)}
.duration{position:absolute;right:8px;bottom:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;background:rgba(15,17,19,.88);border:1px solid var(--line);border-radius:4px;padding:2px 7px;color:var(--hud)}
.hot-dot{position:absolute;left:10px;top:10px;display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:var(--r-chip);background:rgba(15,17,19,.86);border:1px solid var(--line);font-size:11px;color:var(--muted);letter-spacing:.04em}
.hot-dot i{width:6px;height:6px;border-radius:50%;background:var(--warn);display:inline-block}
.v-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:8px;flex:1}
.v-title{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.v-title a:hover{color:var(--brand)}
.v-sum{font-size:13.5px;color:var(--muted);line-height:1.68;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.v-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;border-top:1px solid var(--line)}
.v-date{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--steel);white-space:nowrap}

/* 编辑精选 */
.pick-list{display:grid;gap:16px}
.pick{display:grid;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out}
@media(min-width:768px){.pick{grid-template-columns:300px minmax(0,1fr)}}
@media(min-width:1100px){.pick{grid-template-columns:340px minmax(0,1fr)}}
.pick:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow)}
.pick-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#101315}
.pick-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .18s ease-out}
.pick:hover .pick-thumb img{transform:scale(1.03)}
.pick-body{padding:20px 22px;display:flex;flex-direction:column;gap:10px}
.pick-rank{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--hud)}
.pick-title{font-size:18px;font-weight:600;line-height:1.45}
.pick-title a:hover{color:var(--brand)}
.pick-text{font-size:14px;color:var(--muted);line-height:1.75}
.pick-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}

/* 步骤 */
.steps{display:grid;gap:22px;margin-top:34px}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr))}}
.step{position:relative;padding-top:26px}
.step::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--line)}
.step::after{content:"";position:absolute;top:-3px;left:0;width:8px;height:8px;border-radius:50%;background:var(--hud)}
.step-num{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.1em;color:var(--hud)}
.step h3{font-size:17px;margin-top:8px}
.step p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.75}

/* 指标条 */
.metric-bar{display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media(min-width:768px){.metric-bar{grid-template-columns:repeat(4,minmax(0,1fr))}}
.metric{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;position:relative;overflow:hidden}
.metric::before{content:"";position:absolute;top:8px;left:8px;width:10px;height:10px;border-top:1px solid var(--hud);border-left:1px solid var(--hud);opacity:.4}
.metric-num{font-family:var(--font-mono);font-size:clamp(24px,3.6vw,32px);letter-spacing:.04em;color:var(--hud);line-height:1.2}
.metric-label{margin-top:8px;font-size:14px;color:var(--muted)}
.metric-bar-line{margin-top:16px;height:3px;border-radius:2px;background:rgba(255,255,255,.06);overflow:hidden}
.metric-bar-line i{display:block;height:100%;background:var(--brand);border-radius:2px}

/* FAQ */
.faq-wrap{max-width:860px;margin:32px auto 0}
details.faq{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:16px 20px;margin-bottom:12px;transition:border-color .18s ease-out}
details.faq:hover{border-color:var(--steel)}
details.faq[open]{border-color:var(--brand)}
details.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:16px;font-weight:600}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-family:var(--font-mono);font-size:19px;color:var(--brand);transition:transform .18s ease-out;flex:none;line-height:1}
details.faq[open] summary::after{transform:rotate(180deg)}
details.faq p{margin-top:12px;font-size:14.5px;color:var(--muted);line-height:1.8}

/* 相关专题 */
.topic-grid{display:grid;gap:16px;margin-top:28px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media(min-width:1024px){.topic-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.topic{display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:18px;transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out}
.topic:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow)}
.topic-icon{width:34px;height:34px;border-radius:6px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--brand);font-family:var(--font-mono);font-size:13px;letter-spacing:.06em}
.topic h3{font-size:15.5px;margin-top:14px;line-height:1.5}
.topic p{font-size:13.5px;color:var(--muted);margin-top:8px;line-height:1.7}

/* CTA */
.cta-panel{border:1px solid var(--brand);border-radius:var(--r-card);background:linear-gradient(180deg,rgba(255,106,43,.10),rgba(255,106,43,.02));padding:30px;display:grid;gap:22px}
@media(min-width:860px){.cta-panel{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:38px 40px}}
.cta-panel h2{font-size:clamp(21px,2.6vw,28px)}
.cta-panel p{color:var(--muted);font-size:14.5px;margin-top:10px;max-width:60ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* 订阅表单 */
.sub-form{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;max-width:520px}
.sub-form input[type="email"]{flex:1 1 220px;min-width:0;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-btn);padding:12px 14px;font-size:14.5px;outline:none;transition:border-color .18s ease-out,box-shadow .18s ease-out}
.sub-form input[type="email"]::placeholder{color:var(--steel)}
.sub-form input[type="email"]:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(255,106,43,.22)}
.sub-note{font-size:12.5px;color:var(--steel);margin-top:10px}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:#0B0D0F;margin-top:16px}
.footer-grid{display:grid;gap:30px;padding:52px 0 38px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
.footer-about{color:var(--muted);font-size:14px;margin-top:12px;max-width:36ch;line-height:1.8}
.footer-grid h4{font-size:14px;color:var(--text);margin-bottom:14px;font-weight:600}
.footer-links{display:grid;gap:9px}
.footer-links a{color:var(--muted);font-size:14px;transition:color .18s ease-out}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0 28px;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;color:var(--steel);font-size:13px}