/* E站 EhViewer · ehviewer2027.net.cn —— 动漫台词、经典语录
   深墨绿暗场 · 黑体 900 + 等宽小标签 · 20px 大圆角面板 · 首屏居中舞台（界面展示并入）· 明暗交替 */
:root{
  --bg:#0E211C; --bg-panel:#142B25; --ink:#EAF4EF; --dim:#8FA69D;
  --acc:#3FBFA0; --acc-ink:#07130F; --line:#24403A;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",sans-serif;font-size:15px;line-height:1.85}
.wrap{width:min(1180px,92%);margin:0 auto}
h1,h2{font-weight:900;letter-spacing:.01em}
.mono{font-family:ui-monospace,"Cascadia Mono",Consolas,monospace}
a{color:inherit;text-decoration:none}
img{display:block}

/* 顶栏 */
.top{position:sticky;top:0;z-index:20;background:rgba(14,33,28,.95);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;gap:26px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700}
.brand img{border-radius:9px}
.top-nav{display:flex;gap:22px;margin-left:auto;font-size:14px;color:var(--dim)}
.top-nav a:hover{color:var(--acc)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;font-size:14px;border-radius:20px;border:1px solid var(--acc);transition:opacity .15s}
.btn:hover{opacity:.85}
.btn-p{background:var(--acc);color:var(--acc-ink);font-weight:700}
.top-cta{padding:9px 22px}

/* 首屏：居中舞台，滑动框并入 */
.hero{padding:96px 0 88px;border-bottom:1px solid var(--line)}
.hero-in{display:flex;flex-direction:column;align-items:center;text-align:center}
.kick{font-family:ui-monospace,"Cascadia Mono",Consolas,monospace;font-size:11px;letter-spacing:.34em;color:var(--acc);text-transform:uppercase;margin-bottom:22px}
h1{font-size:58px;line-height:1.24;margin-bottom:22px}
.h1-narrow{display:none}
.lead{color:var(--dim);font-size:16px;max-width:620px;margin-bottom:32px}
.hero-btns{display:flex;gap:14px;margin-bottom:60px}
.viewer-wrap{display:flex;flex-direction:column;align-items:center}
.viewer{position:relative}
.phone{width:300px;background:var(--bg-panel);border:1px solid var(--line);border-radius:26px;padding:12px;box-shadow:0 20px 48px rgba(0,0,0,.5)}
.track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;border-radius:15px;scrollbar-width:none}
.track::-webkit-scrollbar{display:none}
.slide{flex:0 0 100%;scroll-snap-align:start}
.slide img{width:100%;height:auto;border-radius:15px}
.arrow{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--bg-panel);color:var(--acc);font-size:19px;cursor:pointer;line-height:1}
.arrow:hover{background:var(--acc);color:var(--acc-ink)}
.arrow[disabled]{opacity:.35;pointer-events:none}
.prev{left:-56px}.next{right:-56px}
.bar{display:flex;align-items:center;gap:14px;justify-content:center;margin-top:18px}
.dots{display:flex;gap:8px}
.dots button{width:9px;height:9px;border-radius:50%;border:0;background:var(--line);cursor:pointer;padding:0}
.dots button[aria-current="true"]{background:var(--acc)}
.now{font-size:13px;color:var(--dim);min-width:5em}

/* 通用区块（浅色反差段） */
.sec{padding:110px 0}
.sec-light{background:#F4F8F5;color:#1C2B25}
.sec-light .sec-kick{color:#1F7A66}
.sec-light .sec-p{color:#5E6E66}
.sec-kick{font-family:ui-monospace,"Cascadia Mono",Consolas,monospace;font-size:11px;letter-spacing:.3em;color:var(--acc);margin-bottom:14px}
h2{font-size:34px;margin-bottom:14px}
.sec-p{color:var(--dim);max-width:560px;margin-bottom:44px}

/* 功能卡 */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:#FFFFFF;border-radius:20px;padding:28px 26px 24px;box-shadow:0 4px 16px rgba(28,43,37,.08)}
.sec .card{color:#1C2B25}
.card b{display:flex;align-items:center;gap:12px;font-size:16px;font-weight:900;margin-bottom:8px}
.card p{font-size:14px;color:#5E6E66}
.ico{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:17px;font-weight:900;color:#1F7A66;background:#DFF0E9;border-radius:12px;flex:none}
.ico-b{color:#2D5FA8;background:#E1EAF8}
.ico-c{color:#8A4A22;background:#F6E9DC}
.ico-d{color:#7A3A8E;background:#F0E3F5}
.ico-e{color:#22596B;background:#DCEEF3}
.ico-f{color:#4A6B2C;background:#E7EEDB}

/* 下载区：暗场三入口 */
.dl{background:var(--bg-panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:104px 0}
.dl-kick{font-family:ui-monospace,"Cascadia Mono",Consolas,monospace;font-size:11px;letter-spacing:.3em;color:var(--acc);margin-bottom:14px}
.dl h2{font-size:36px;margin-bottom:12px}
.dl-sub{color:var(--dim);margin-bottom:42px}
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:860px}
.store{align-items:center;gap:14px;background:var(--acc);color:var(--acc-ink);border-radius:20px;padding:16px 20px;transition:transform .15s}
.store:not([hidden]){display:flex}
.dl:not(:has(a[data-channel]:not([hidden]))){display:none}
.store:hover{transform:translateY(-2px)}
.store-ico{font-size:24px;width:36px;text-align:center;flex:none}
.store-t b{display:block;font-size:15px}
.store-t small{font-size:12px;color:#0E4A3B}
.check{list-style:none;display:flex;gap:26px;flex-wrap:wrap;margin:30px 0 0;font-size:13px;color:var(--dim)}
.check li::before{content:"✓";color:var(--acc);margin-right:8px}
.dl-note{margin-top:26px;font-size:13px;color:var(--dim)}

/* 安装步骤 */
.step-list{list-style:none;max-width:760px}
.step-list li{display:grid;grid-template-columns:64px 128px 1fr;gap:20px;align-items:start;background:#FFFFFF;border-radius:20px;padding:22px 26px;margin-bottom:14px;box-shadow:0 4px 16px rgba(28,43,37,.08)}
.step-n{font-family:ui-monospace,"Cascadia Mono",Consolas,monospace;font-size:26px;font-weight:700;color:#1F7A66;line-height:1.4}
.step-list b{font-size:16px;font-weight:900;padding-top:3px}
.step-list p{font-size:14px;color:#5E6E66;padding-top:4px}

/* 问答 */
.faq-list{display:grid;grid-template-columns:1fr 1fr;gap:16px 22px;max-width:920px}
details{background:var(--bg-panel);border:1px solid var(--line);border-radius:16px;padding:16px 22px}
details summary{cursor:pointer;font-size:15px;font-weight:700;list-style:none;position:relative;padding-right:28px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";position:absolute;right:2px;top:0;color:var(--acc);font-size:18px}
details[open] summary::after{content:"−"}
details p{font-size:14px;color:var(--dim);padding-top:10px}

/* 页脚 */
.foot{color:var(--dim);padding:64px 0 0}
.foot-in{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding-bottom:44px}
.foot-h{font-size:13px;color:var(--acc);margin-bottom:14px;font-weight:900}
.foot-col a,.foot-col span{display:block;font-size:13px;padding:3px 0}
.foot-col a:hover{color:var(--acc)}
.foot-bot{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:18px 0;font-size:12px;color:#5E7A70}

/* 无下载入口 */
.no-dl .dl{display:none}
.no-dl .top-cta{display:none}

/* 404 */
.nf-page{background:var(--bg);min-height:100vh;display:flex;align-items:center;justify-content:center}
.nf-in{text-align:center;padding:60px 24px;max-width:560px}
.nf-logo{width:88px;height:88px;border-radius:20px;margin:0 auto}
.nf-code{font-family:ui-monospace,"Cascadia Mono",Consolas,monospace;font-size:76px;line-height:1;color:var(--acc);margin:22px 0 8px}
.nf-in h1{font-size:30px;margin-bottom:14px}
.nf-p{font-size:14px;color:var(--dim);line-height:1.9;margin-bottom:26px}
.nf-small{font-size:12px;color:var(--dim);margin-top:26px}

/* 窄屏 */
@media (max-width:900px){
  .top-nav{display:none}
  .hero{padding:64px 0 56px}
  h1{font-size:44px}
  .sec{padding:72px 0}
  .grid{grid-template-columns:1fr 1fr}
  .prev{left:6px}.next{right:6px}
  .dl{padding:72px 0}
  .dl-grid{grid-template-columns:1fr;max-width:420px}
  .foot-in{grid-template-columns:1fr 1fr}
  .faq-list{grid-template-columns:1fr}
  .step-list li{grid-template-columns:44px 1fr;grid-template-rows:auto auto;padding:18px 20px}
  .step-list p{grid-column:2}
}
@media (max-width:560px){
  .nav:not([hidden]){display:none}
  h1{font-size:38px}
  .h1-wide{display:none}
  .h1-narrow{display:inline}
  .grid{grid-template-columns:1fr}
  .phone{width:240px}
  .top-in{gap:14px}
  .top-cta{margin-left:auto}
  .lead br{display:none}
}