/* ===== 高性价比人生指南 · Apple Flat ===== */
:root{
  --bg:#f5f5f7;
  --bg-elevated:#ffffff;
  --bg-sub:#ececef;
  --text:#1d1d1f;
  --text-2:#515154;
  --text-3:#86868b;
  --line:#e3e3e8;
  --accent:#0071e3;
  --accent-soft:#e7f0fd;
  --red:#ff3b30; --orange:#ff9500; --yellow:#ffcc00; --green:#34c759;
  --radius:14px;
  --shadow:0 1px 3px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.04);
  --shadow-hover:0 6px 24px rgba(0,0,0,.10);
  --read-size:18px;
}
[data-theme="dark"]{
  --bg:#000000;
  --bg-elevated:#1c1c1e;
  --bg-sub:#2c2c2e;
  --text:#f5f5f7;
  --text-2:#d1d1d6;
  --text-3:#8e8e93;
  --line:#38383a;
  --accent:#0a84ff;
  --accent-soft:#0a2540;
  --shadow:0 1px 3px rgba(0,0,0,.4);
  --shadow-hover:0 6px 24px rgba(0,0,0,.5);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;transition:background .25s ease,color .25s ease;
  padding-bottom:env(safe-area-inset-bottom);
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}

/* ===== 顶栏 ===== */
.topbar{position:sticky;top:0;z-index:100;background:var(--bg-elevated);background:color-mix(in srgb,var(--bg-elevated) 82%,transparent);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line)}
.topbar-inner{max-width:1120px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:14px}
.brand{font-weight:700;font-size:16px;color:var(--text);white-space:nowrap;letter-spacing:-.2px}
.brand:hover{text-decoration:none}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:none;background:transparent;color:var(--text);cursor:pointer;font-size:18px;transition:background .15s}
.icon-btn:hover{background:var(--bg-sub)}
.menu-btn{display:none}
.searchbox{flex:1;display:flex;max-width:440px;margin:0 auto;align-items:center;background:var(--bg-sub);border-radius:10px;padding:0 6px 0 12px}
.searchbox input{flex:1;border:none;background:transparent;padding:8px 4px;font-size:14px;outline:none;color:var(--text);min-width:0}
.searchbox input::placeholder{color:var(--text-3)}
.searchbox button{border:none;background:transparent;color:var(--text-2);padding:6px;cursor:pointer;display:flex;align-items:center}
.topnav{display:flex;gap:4px}
.topnav a{color:var(--text);font-size:14px;padding:6px 12px;border-radius:8px;font-weight:500}
.topnav a:hover{background:var(--bg-sub);text-decoration:none}
.topnav a.active{color:var(--accent)}
.theme-toggle .icon-moon{display:none}
[data-theme="dark"] .theme-toggle .icon-sun{display:none}
[data-theme="dark"] .theme-toggle .icon-moon{display:block}

/* ===== 抽屉菜单 ===== */
.drawer{position:fixed;inset:0;z-index:200;visibility:hidden}
.drawer.open{visibility:visible}
.drawer-mask{position:absolute;inset:0;background:rgba(0,0,0,.3);opacity:0;transition:opacity .25s}
.drawer.open .drawer-mask{opacity:1}
.drawer-panel{position:absolute;top:0;left:0;bottom:0;width:300px;max-width:85vw;background:var(--bg-elevated);padding:16px;overflow-y:auto;transform:translateX(-100%);transition:transform .25s ease;box-shadow:2px 0 24px rgba(0,0,0,.15)}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;padding:4px 4px 12px;border-bottom:1px solid var(--line)}
.drawer-title{font-weight:700;font-size:16px}
.drawer-close{border:none;background:var(--bg-sub);width:30px;height:30px;border-radius:50%;cursor:pointer;color:var(--text)}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{color:var(--text);padding:10px 12px;border-radius:8px;font-size:14px;line-height:1.4}
.drawer-nav a:hover{background:var(--bg-sub);text-decoration:none}
.drawer-sep{height:1px;background:var(--line);margin:8px 0}

.container{max-width:1120px;margin:0 auto;padding:24px 20px 60px}

/* ===== Hero ===== */
.hero{text-align:center;padding:36px 16px 28px}
.hero-cover{max-width:320px;width:100%;border-radius:18px;box-shadow:var(--shadow-hover);margin-bottom:20px}
.hero h1{font-size:32px;font-weight:700;letter-spacing:-.5px}
.hero p{color:var(--text-3);margin-top:10px;font-size:15px;max-width:560px;margin-left:auto;margin-right:auto}

/* ===== 布局 ===== */
.layout{display:grid;grid-template-columns:1fr 330px;gap:26px;margin-top:8px}
.sec-title{font-size:19px;font-weight:700;margin-bottom:14px;letter-spacing:-.2px}

/* 分类卡片 */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.cat-card{background:var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:block;transition:transform .15s,box-shadow .15s;color:var(--text)}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);text-decoration:none}
.cat-title{font-weight:600;font-size:15px;line-height:1.45}
.cat-meta{color:var(--text-3);font-size:12px;margin-top:8px}

/* 排行榜 */
.rank-card{background:var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius);padding:16px;position:sticky;top:66px}
.rank-tabs{display:flex;gap:6px;margin-bottom:10px;flex-wrap:wrap}
.rtab{border:none;background:var(--bg-sub);padding:6px 12px;border-radius:8px;font-size:13px;cursor:pointer;color:var(--text);transition:all .15s}
.rtab.active{background:var(--accent);color:#fff}
.rank-list{list-style:none}
.rank-list li a{display:flex;align-items:center;gap:10px;padding:7px 6px;border-radius:8px;color:var(--text);font-size:13px}
.rank-list li a:hover{background:var(--bg-sub);text-decoration:none}
.rank-num{display:inline-flex;min-width:20px;height:20px;align-items:center;justify-content:center;background:var(--bg-sub);border-radius:6px;font-size:11px;font-weight:700;color:var(--text-3);flex-shrink:0;padding:0 4px}
.rank-list li:nth-child(1) .rank-num{background:var(--red);color:#fff}
.rank-list li:nth-child(2) .rank-num{background:var(--orange);color:#fff}
.rank-list li:nth-child(3) .rank-num{background:var(--yellow);color:#fff}
.rank-title{flex:1;line-height:1.4;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.rank-cat{font-size:11px;color:var(--text-3)}
.rank-cnt{font-size:12px;color:var(--text-3);font-weight:600}
.rank-list.big{max-width:760px}
.rank-list.big li a{padding:12px 8px;font-size:14px;border-bottom:1px solid var(--line);border-radius:0}

/* 面包屑 */
.breadcrumb{font-size:13px;color:var(--text-3);margin:6px 0 16px}
.breadcrumb a{color:var(--text-3)}
.page-title{font-size:26px;font-weight:700;letter-spacing:-.3px;margin-bottom:14px}

/* 分类导语 */
.cat-intro{background:var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin-bottom:26px;font-size:15px;color:var(--text-2)}
.cat-intro p{margin:0 0 10px}.cat-intro p:last-child{margin-bottom:0}

/* 文章列表 */
.art-list{display:flex;flex-direction:column;gap:10px}
.art-row{background:var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius);padding:15px 18px;display:flex;flex-direction:column;gap:3px;color:var(--text);transition:transform .15s,box-shadow .15s}
.art-row:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover);text-decoration:none}
.art-title{font-weight:600;font-size:15px;line-height:1.45}
.art-stats,.art-cat{font-size:12px;color:var(--text-3)}
.art-cat{color:var(--accent)}
.art-snippet{font-size:13px;color:var(--text-3);line-height:1.5}

/* ===== 阅读页 ===== */
.progress-bar{position:fixed;top:0;left:0;height:3px;background:var(--accent);width:0;z-index:300}
.reader{max-width:760px;margin:0 auto}
.read-title{font-size:25px;font-weight:700;line-height:1.35;letter-spacing:-.3px}
.read-meta{color:var(--text-3);font-size:13px;margin:10px 0 18px;display:flex;gap:8px;align-items:center}

/* 工具栏 */
.read-toolbar{position:sticky;top:57px;z-index:90;background:var(--bg-elevated);background:color-mix(in srgb,var(--bg-elevated) 90%,transparent);backdrop-filter:blur(16px);border:1px solid var(--line);border-radius:12px;padding:8px;margin-bottom:22px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between}
.tool-group{display:flex;gap:4px;align-items:center}
.tool-btn{border:none;background:var(--bg-sub);border-radius:8px;padding:6px 12px;font-size:13px;cursor:pointer;color:var(--text);transition:background .15s}
.tool-btn:hover{background:var(--line)}
.tool-btn.voted{background:var(--accent);color:#fff}
.theme-dot{width:26px;height:26px;border-radius:50%;border:1px solid var(--line);padding:0}
.theme-dot.active{outline:2px solid var(--accent);outline-offset:2px}

/* 正文 */
.read-content{font-size:var(--read-size);line-height:1.85;color:var(--text)}
.read-content p{margin:0 0 16px}
.read-content .subhead{font-size:18px;font-weight:700;margin:28px 0 14px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.read-content .advice{list-style:none;margin:0 0 20px;padding:0}
.read-content .item{background:var(--bg-elevated);border:1px solid var(--line);border-radius:12px;padding:13px 16px;margin-bottom:10px;font-size:var(--read-size);line-height:1.7}
.read-content .item-label{display:inline-block;font-weight:700;margin-right:8px;padding:1px 8px;border-radius:6px;font-size:13px;vertical-align:1px}
.read-content .item-成本 .item-label{background:var(--accent-soft);color:var(--accent)}
.read-content .item-说人话 .item-label{background:#e8f8ee;color:#1a7f37}
[data-theme="dark"] .read-content .item-说人话 .item-label{background:#0d2818;color:#30d158}
.read-content .item-收益 .item-label{background:#fff2e5;color:#c93400}
[data-theme="dark"] .read-content .item-收益 .item-label{background:#3a1d00;color:#ff9f0a}
.read-content .item-证据等级 .item-label{background:#f3e8fb;color:#8944ab}
[data-theme="dark"] .read-content .item-证据等级 .item-label{background:#2a0f3d;color:#bf5af2}
.read-content .item-来源 .item-label{background:var(--bg-sub);color:var(--text-2)}
.read-content .item-备注 .item-label{background:#fce8ef;color:#c22060}
[data-theme="dark"] .read-content .item-备注 .item-label{background:#3d0a1e;color:#ff6482}
.read-content a{word-break:break-all}

/* 点赞区 */
.react-bar{margin:32px 0 20px;padding:24px;text-align:center;background:var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius)}
.react-hint{color:var(--text-3);font-size:14px;margin-bottom:14px}
.react-big{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.react-big-btn{border:1px solid var(--line);background:var(--bg-sub);border-radius:12px;padding:11px 20px;font-size:14px;cursor:pointer;transition:all .15s;color:var(--text)}
.react-big-btn:hover{border-color:var(--accent)}
.react-big-btn.voted{background:var(--accent);color:#fff;border-color:var(--accent)}

/* 上一篇/下一篇 */
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.pager-item{flex:1;padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--bg-elevated);color:var(--text)}
.pager-item.next{text-align:right}
.pager-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:4px}
.pager-title{font-size:14px;line-height:1.4}
.pager-item:hover{text-decoration:none;border-color:var(--accent)}

/* 搜索 */
.searchbox-large{display:flex;gap:8px;max-width:600px;margin:14px 0 22px}
.searchbox-large input{flex:1;padding:12px 16px;border:1px solid var(--line);border-radius:12px;font-size:15px;outline:none;background:var(--bg-elevated);color:var(--text)}
.searchbox-large input:focus{border-color:var(--accent)}
.searchbox-large button{background:var(--accent);color:#fff;border:none;border-radius:12px;padding:0 22px;cursor:pointer;font-size:15px}
.search-stat{color:var(--text-3);font-size:14px;margin-bottom:16px}
.empty{color:var(--text-3);text-align:center;padding:40px 0}
.page-tabs{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}
.page-tabs .rtab{padding:8px 16px;font-size:14px}

/* 页脚 */
.footer{text-align:center;color:var(--text-3);font-size:12px;padding:28px 20px;border-top:1px solid var(--line);margin-top:40px}

/* ===== 阅读页专属背景（覆盖全局主题）===== */
body.bg-sepia{--bg:#f5ecd9;--bg-elevated:#faf3e3;--bg-sub:#ede2c9;--line:#e2d4b6;--text:#3a3226;--text-2:#5c5240;--text-3:#8a7d66}
body.bg-green{--bg:#dcebd9;--bg-elevated:#e8f2e6;--bg-sub:#cfe0cb;--line:#bcd2b8;--text:#24331f;--text-2:#3d5238;--text-3:#6b7d66}
body.bg-dark{--bg:#161617;--bg-elevated:#232324;--bg-sub:#333335;--line:#3d3d40;--text:#e8e8ea;--text-2:#c8c8cc;--text-3:#8e8e93}
body.bg-sepia .topbar, body.bg-green .topbar, body.bg-dark .topbar{background:var(--bg-elevated);background:color-mix(in srgb,var(--bg-elevated) 85%,transparent)}

/* Toast */
.toast{position:fixed;bottom:32px;left:50%;transform:translateX(-50%);background:var(--text);color:var(--bg);padding:10px 20px;border-radius:10px;font-size:14px;opacity:0;transition:opacity .25s;z-index:400;pointer-events:none;box-shadow:var(--shadow-hover)}
.toast.show{opacity:.95}

/* ===== 安全警告条 ===== */
.install-warn{background:#fff3cd;color:#7a5c00;text-align:center;font-size:13px;padding:8px 16px;border-bottom:1px solid #ffe08a}
[data-theme="dark"] .install-warn{background:#3d2f00;color:#ffd60a;border-color:#5c4a00}

/* ===== 徽章 ===== */
.badge-cat{background:var(--accent-soft);color:var(--accent);padding:2px 10px;border-radius:6px;font-size:12px;font-weight:600}
.badge-ev{padding:2px 8px;border-radius:6px;font-size:11px;font-weight:700;letter-spacing:.3px}
.ev-A{background:#e8f8ee;color:#1a7f37}
.ev-B{background:#e7f0fd;color:#0071e3}
.ev-C{background:#f3e8fb;color:#8944ab}
[data-theme="dark"] .ev-A{background:#0d2818;color:#30d158}
[data-theme="dark"] .ev-B{background:#0a2540;color:#64d2ff}
[data-theme="dark"] .ev-C{background:#2a0f3d;color:#bf5af2}
.badge-free{background:#e8f8ee;color:#1a7f37;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:600}
.badge-ctrl{background:#ffeceb;color:#d70015;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:600}
.art-title .badge-ev,.art-title .badge-free,.art-title .badge-ctrl{margin-left:6px;vertical-align:middle}

/* ===== 筛选 chips ===== */
.filter-chips{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:6px 0 18px}
.chip-label{font-size:13px;color:var(--text-3)}
.chip{display:inline-block;padding:6px 14px;border-radius:16px;background:var(--bg-elevated);border:1px solid var(--line);color:var(--text-2);font-size:13px;cursor:pointer;transition:all .15s}
.chip:hover{text-decoration:none;border-color:var(--accent);color:var(--accent)}
.chip.on{background:var(--accent);color:#fff;border-color:var(--accent)}
.chip-sep{width:1px;height:18px;background:var(--line);margin:0 4px}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:18px}
.hero-chips .chip{font-size:13px;padding:7px 16px}

/* ===== 文章目录 TOC ===== */
.read-toc{background:var(--bg-elevated);border:1px solid var(--line);border-radius:12px;padding:12px 18px;margin-bottom:20px;font-size:14px}
.read-toc summary{cursor:pointer;font-weight:600;color:var(--text-2);outline:none}
.read-toc ol{margin:12px 0 0 20px;color:var(--text-3);line-height:2}

/* ===== 相关阅读 ===== */
.related{margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}

/* ===== 回到顶部 ===== */
.back-top{position:fixed;right:22px;bottom:28px;width:42px;height:42px;border-radius:50%;background:var(--bg-elevated);border:1px solid var(--line);box-shadow:var(--shadow-hover);color:var(--text);font-size:18px;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .25s;z-index:150}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ===== 空态 ===== */
.rank-empty{padding:24px;text-align:center;color:var(--text-3);font-size:13px}

/* 页脚链接 */
.footer-links{margin-top:8px}
.footer-links a{color:var(--text-3);margin:0 6px}

/* ===== 打印样式 ===== */
@media print{
  .topbar,.drawer,.read-toolbar,.react-bar,.pager,.back-top,.install-warn,.progress-bar,
  .hero-chips,.filter-chips,.footer-links,#backTop{display:none !important}
  body{background:#fff;color:#000;font-size:12pt;line-height:1.6}
  .reader,.container{max-width:100%;padding:0}
  .cat-card,.art-row,.read-content .item,.cat-intro,.react-bar,.read-toc{border:none;box-shadow:none;background:#fff}
  a{color:#000;text-decoration:underline}
  .read-content a{word-break:break-all}
}

/* ===== 响应式 ===== */
@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .side-col{order:-1}
  .rank-card{position:static}
  .topnav{display:none}
  .menu-btn{display:inline-flex}
  .hero h1{font-size:25px}
  .read-toolbar{top:56px}
  .pager{flex-direction:column}
}
@media (max-width:560px){
  .topbar-inner{padding:8px 12px;gap:10px}
  .brand{font-size:15px}
  .searchbox{padding-left:10px}
  .container{padding:18px 14px 48px}
  .hero{padding:24px 8px 20px}
  .hero h1{font-size:22px}
  .read-title{font-size:21px}
  .read-content{font-size:var(--read-size,17px)}
  .cat-grid{grid-template-columns:1fr 1fr;gap:10px}
  .cat-card{padding:14px}
  .react-big-btn{padding:10px 16px;font-size:13px}
}