/* ============================================================
   QiField「气场」— aliyun benefit 结构仿制版
   结构：深蓝大 banner → 图标 tab 条 → 三大板块（主打大卡+双卡+三列网格+权益条）
        → 周刊订阅横幅 → AI 工具横带 → 规则 FAQ → 页脚
   ============================================================ */
:root{
  --blue:#1677ff; --blue-d:#0e5bd8; --deep:#0b1f5c; --deep-2:#123a91;
  --seal:#c8402a; --gold:#b8860b;
  --ink:#16181d; --text:#4e5969; --muted:#86909c; --line:#e5e6eb;
  --bg:#ffffff; --bg-2:#f7f8fa; --card:#ffffff;
  --radius:12px; --radius-lg:16px;
  --shadow:0 2px 12px rgba(15,23,42,.06);
  --shadow-h:0 12px 32px rgba(15,23,42,.12);
  --container:1280px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);font-size:15px;line-height:1.75;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none;transition:color .2s}
a:hover{color:var(--blue-d)}
ul,ol{list-style:none}
button,input{font-family:inherit}
::selection{background:rgba(22,119,255,.18)}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .25s}
.site-header.is-scrolled{box-shadow:0 4px 20px rgba(15,23,42,.08)}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:19px;letter-spacing:1px}
.brand:hover{color:var(--ink)}
.brand-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--seal),#e0654c);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700}
.brand small{display:block;font-size:10px;color:var(--muted);letter-spacing:2px;font-weight:400;text-transform:uppercase}
.main-nav{display:flex;gap:4px}
.main-nav a{display:block;padding:7px 15px;border-radius:6px;color:var(--text);font-size:14.5px}
.main-nav a:hover,.main-nav a.is-active{background:var(--bg-2);color:var(--ink)}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.header-search{display:flex;align-items:center;background:var(--bg-2);border:1px solid var(--line);border-radius:8px;padding:0 10px;height:38px;width:240px}
.header-search input{flex:1;min-width:0;border:none;background:none;outline:none;font-size:14px;color:var(--ink)}
.header-search button{border:none;background:none;color:var(--muted);cursor:pointer;display:grid;place-items:center}
.header-search button:hover{color:var(--blue)}
.header-search svg{width:16px;height:16px}
.btn-search{background:var(--blue);color:#fff;height:38px;padding:0 20px;border:none;border-radius:8px;font-size:14.5px;font-weight:500;cursor:pointer;transition:background .2s}
.btn-search:hover{background:var(--blue-d)}
.icon-btn{width:38px;height:38px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);display:grid;place-items:center;cursor:pointer}
.icon-btn:hover{color:var(--blue);border-color:var(--blue)}
.icon-btn svg{width:18px;height:18px}
.hamburger{display:none}

/* ============ 大 Banner（Hero） ============ */
.banner{position:relative;background:linear-gradient(115deg,var(--deep) 0%,var(--deep-2) 48%,var(--blue) 100%);color:#fff;overflow:hidden}
.banner::after{content:"";position:absolute;inset:0;background:radial-gradient(60% 70% at 82% 22%,rgba(255,255,255,.16),transparent 60%)}
.banner-canvas{position:absolute;inset:0;width:100%;height:100%}
.banner-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .75fr;gap:48px;padding:72px 24px 64px;align-items:center}
.banner-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border:1px solid rgba(255,255,255,.3);border-radius:99px;font-size:13px;color:rgba(255,255,255,.86)}
.banner-eyebrow::before{content:"";width:6px;height:6px;border-radius:99px;background:#ffd666}
.banner h1{margin-top:22px;font-size:clamp(40px,5.4vw,68px);font-weight:800;line-height:1.18;letter-spacing:2px}
.banner-sub{margin-top:18px;font-size:16.5px;line-height:1.9;color:rgba(255,255,255,.82);max-width:560px}
.banner-search{margin-top:30px;display:flex;background:#fff;border-radius:10px;padding:6px;max-width:520px;box-shadow:0 12px 32px rgba(0,0,0,.18)}
.banner-search input{flex:1;min-width:0;border:none;outline:none;padding:11px 18px;font-size:15px;color:var(--ink);border-radius:8px}
.banner-search button{border:none;background:var(--blue);color:#fff;padding:0 30px;border-radius:8px;font-size:15px;font-weight:500;cursor:pointer}
.banner-search button:hover{background:var(--blue-d)}
.banner-btns{margin-top:24px;display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:11px 26px;border-radius:8px;font-size:15px;font-weight:500;transition:all .2s;border:1px solid transparent}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-d);color:#fff}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-line{border-color:var(--blue);color:var(--blue)}
.btn-line:hover{background:rgba(22,119,255,.08);color:var(--blue)}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:#000;color:#fff}
/* banner 右侧小卡堆叠（仿 benefit 右上入口） */
.banner-side{display:grid;gap:12px}
.bn-card{display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:16px 18px;transition:background .25s}
.bn-card:hover{background:rgba(255,255,255,.18)}
.bn-ico{width:44px;height:44px;border-radius:10px;background:#fff;display:grid;place-items:center;flex-shrink:0;font-size:20px;font-weight:800;color:var(--deep)}
.bn-card strong{display:block;font-size:15px;color:#fff}
.bn-card span{font-size:12.5px;color:rgba(255,255,255,.65)}

/* ============ 图标 tab 条 ============ */
.tabbar{position:relative;z-index:5;background:#fff;border-bottom:1px solid var(--line)}
.tabbar-inner{display:grid;grid-template-columns:repeat(6,1fr)}
.tab{display:flex;flex-direction:column;align-items:center;gap:8px;padding:22px 8px;border-right:1px solid var(--line);color:var(--text);transition:background .2s}
.tab:last-child{border-right:none}
.tab:hover{background:var(--bg-2)}
.tab-ico{width:40px;height:40px;border-radius:10px;display:grid;place-items:center}
.tab-ico svg{width:21px;height:21px;stroke:#fff;fill:none;stroke-width:1.8}
.tab span{font-size:13.5px}
.tab.is-active{color:var(--ink);font-weight:600;box-shadow:inset 0 -3px 0 var(--blue)}

/* ============ 通用区块（仿 benefit 结构） ============ */
.blk{padding:72px 0}
.blk.alt{background:var(--bg-2)}
.blk-head{margin-bottom:32px}
.blk-kicker{display:inline-block;font-size:14px;color:var(--blue);font-weight:600;letter-spacing:1px}
.blk-kicker em{font-style:italic;color:var(--seal)}
.blk-title{margin-top:10px;font-size:clamp(26px,3.2vw,38px);font-weight:700;color:var(--ink);line-height:1.3;letter-spacing:1px}
.blk-desc{margin-top:12px;font-size:15px;color:var(--text);max-width:720px}
.blk-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}
.blk-more{font-size:14.5px;color:var(--blue);font-weight:500;white-space:nowrap;padding-bottom:6px}

/* ---- 主打大卡 + 右侧双卡 ---- */
.feat{display:grid;grid-template-columns:1.42fr .58fr;gap:20px}
.feat-main{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .3s,transform .3s}
.feat-main:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.feat-media{position:relative;height:270px;background:linear-gradient(135deg,#123a91,#1677ff)}
.feat-media img{width:100%;height:100%;object-fit:cover}
.feat-media .fm-badge{position:absolute;left:16px;top:16px;padding:4px 12px;border-radius:6px;background:var(--seal);color:#fff;font-size:12.5px;font-weight:500}
.fm-wm{position:absolute;right:22px;bottom:6px;font-size:96px;font-weight:800;color:rgba(255,255,255,.22);line-height:1}
.feat-body{padding:24px 28px 26px;display:flex;flex-direction:column;flex:1}
.feat-body h3{font-size:24px;font-weight:700;color:var(--ink);line-height:1.45}
.feat-body p{margin-top:12px;font-size:14.5px;color:var(--text);flex:1}
.feat-foot{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:18px;border-top:1px solid var(--line)}
.qi-num{display:flex;align-items:baseline;gap:6px}
.qi-num b{font-size:34px;font-weight:800;color:var(--seal);line-height:1;font-variant-numeric:tabular-nums}
.qi-num span{font-size:13px;color:var(--muted)}
.feat-side{display:grid;gap:20px}
.mini-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;display:flex;flex-direction:column;transition:box-shadow .3s,transform .3s}
.mini-card:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.mini-card .mc-tag{align-self:flex-start;padding:3px 10px;border-radius:5px;background:rgba(22,119,255,.1);color:var(--blue);font-size:12px;font-weight:500}
.mini-card h4{margin-top:12px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.5}
.mini-card p{margin-top:8px;font-size:13.5px;color:var(--text);flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-meta{margin-top:14px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.mini-meta .qi-score{color:var(--seal);font-weight:700}

/* ---- 三列网格 ---- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .3s,transform .3s}
.card:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.card-media{height:150px;background:linear-gradient(135deg,#0b1f5c,#1677ff);display:grid;place-items:center;position:relative}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-media span{font-size:46px;font-weight:800;color:rgba(255,255,255,.4)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.card-body h4{font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{margin-top:9px;font-size:13.5px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.card-meta{margin-top:14px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.card-meta .qi-score{color:var(--seal);font-weight:700}
.card-chip{padding:3px 9px;border-radius:5px;font-size:11.5px;background:var(--bg-2);color:var(--text)}

/* ---- 权益条（仿 benefit 三列权益） ---- */
.strip{margin-top:24px;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.strip li{background:var(--card);padding:22px 24px;display:flex;gap:14px;align-items:flex-start}
.strip .st-ico{width:38px;height:38px;border-radius:9px;background:rgba(22,119,255,.1);color:var(--blue);display:grid;place-items:center;font-size:17px;font-weight:700;flex-shrink:0}
.strip strong{display:block;font-size:15px;color:var(--ink);font-weight:600}
.strip span{font-size:13px;color:var(--muted);display:block;margin-top:4px}

/* ============ 周刊订阅横幅 ============ */
.subscribe{background:linear-gradient(115deg,#0b1f5c,#1647a8 70%,#1677ff);color:#fff;position:relative;overflow:hidden}
.subscribe::after{content:"";position:absolute;inset:0;background:radial-gradient(50% 90% at 88% 20%,rgba(255,255,255,.14),transparent 60%)}
.sub-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:64px 24px}
.sub-left h2{font-size:clamp(26px,3.2vw,38px);font-weight:700;letter-spacing:1px}
.sub-left p{margin-top:14px;color:rgba(255,255,255,.78);font-size:15px;max-width:480px}
.sub-left .btn{margin-top:26px}
.sub-box{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-lg);padding:30px}
.sub-form{display:flex;gap:10px}
.sub-form input{flex:1;min-width:0;border:none;outline:none;background:#fff;border-radius:8px;padding:12px 18px;font-size:15px;color:var(--ink)}
.sub-form .btn{border-radius:8px}
.sub-message{min-height:22px;margin-top:12px;font-size:14px;color:rgba(255,255,255,.85)}
.sub-message.is-ok{color:#95f0c0}
.sub-message.is-err{color:#ffb3ad}
.sub-notice{margin-top:12px;font-size:14px;color:#95f0c0}
.qifield-hp{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;opacity:0!important}
.sub-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.6)}

/* ============ AI 工具横带 ============ */
.toolband{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tools{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.tool{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;display:flex;align-items:center;gap:12px;transition:box-shadow .25s,transform .25s}
.tool:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.tool .site-icon{width:40px;height:40px;border-radius:9px;overflow:hidden;background:#eef2f9;display:grid;place-items:center;flex-shrink:0}
.tool .site-icon img{width:100%;height:100%;object-fit:cover}
.tool .site-icon .letter{font-size:16px;font-weight:700;color:var(--blue)}
.tool strong{display:block;font-size:14px;font-weight:600;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tool span{font-size:12px;color:var(--muted)}

/* ============ 规则 / FAQ ============ */
.rules{display:grid;grid-template-columns:260px 1fr;gap:48px}
.rules h3{font-size:24px;font-weight:700;color:var(--ink)}
.rules dl{border-top:1px solid var(--line)}
.rules dt{padding:18px 0 8px;font-size:15.5px;font-weight:600;color:var(--ink)}
.rules dd{padding:0 0 18px;font-size:14px;color:var(--text);border-bottom:1px solid var(--line)}

/* ============ 公告条 ============ */
.bulletin-bar{display:flex;align-items:center;gap:12px;max-width:var(--container);margin:16px auto 0;padding:11px 20px;background:#fff7e6;border:1px solid #ffe0a3;border-radius:8px;font-size:14px}
.bulletin-bar .bb-tag{flex-shrink:0;padding:2px 10px;border-radius:5px;background:#d48806;color:#fff;font-size:12px;font-weight:600}
.bulletin-bar a{color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bulletin-bar .bb-close{margin-left:auto;border:none;background:none;font-size:20px;cursor:pointer;color:var(--muted);line-height:1;padding:0 4px}

/* ============ 侧栏 / 热榜（内页共用） ============ */
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}
.side-card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.side-card-head h3{font-size:16.5px;font-weight:700;color:var(--ink)}
.side-card-head a{font-size:13px;color:var(--muted)}
.hot-row{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid var(--line)}
.hot-row:last-child{border-bottom:none}
.hot-rank{width:22px;height:22px;border-radius:5px;background:var(--bg-2);color:var(--muted);font-size:12px;font-weight:700;display:grid;place-items:center;flex-shrink:0}
.hot-rank.r1{background:var(--seal);color:#fff}
.hot-rank.r2{background:#0b1f5c;color:#fff}
.hot-rank.r3{background:#1677ff;color:#fff}
.hot-row a{flex:1;min-width:0;font-size:14px;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hot-row a:hover{color:var(--blue)}
.hot-row .qi-score{flex-shrink:0;font-size:12px;color:var(--seal);font-weight:700}

/* ============ 页脚 ============ */
.site-footer{background:#0b1220;color:var(--muted);font-size:14px}
.footer-main{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:40px;padding:56px 24px 40px}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand p{margin-top:12px;font-size:13.5px;line-height:1.9;max-width:280px}
.footer-col h4{font-size:14.5px;color:#fff;margin-bottom:16px}
.footer-col li{margin-bottom:11px}
.footer-col a{color:var(--muted)}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08)}
.footer-bottom div{max-width:var(--container);margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:18px 24px;font-size:13px}
.to-top{position:fixed;right:24px;bottom:28px;width:44px;height:44px;border:none;border-radius:8px;background:var(--ink);color:#fff;font-size:17px;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(10px);transition:all .3s;z-index:90}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--seal)}

/* ============ 渐入 ============ */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease}
.reveal.in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}

/* ============ 响应式：1120 / 900 / 640 ============ */
@media (max-width:1120px){
  .header-search{display:none}
  .banner-grid{grid-template-columns:1fr;gap:34px}
  .feat{grid-template-columns:1fr}
  .feat-side{grid-template-columns:1fr 1fr}
  .tools{grid-template-columns:repeat(4,1fr)}
  .rules{grid-template-columns:1fr;gap:20px}
}
@media (max-width:900px){
  .main-nav{display:none}
  .hamburger{display:grid}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .strip{grid-template-columns:1fr}
  .tabbar-inner{grid-template-columns:repeat(3,1fr)}
  .tab:nth-child(3n){border-right:none}
  .tab{border-bottom:1px solid var(--line)}
  .sub-inner{grid-template-columns:1fr;gap:32px;padding:52px 24px}
  .footer-main{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .banner-grid{padding:52px 16px 44px}
  .grid-3{grid-template-columns:1fr}
  .feat-side{grid-template-columns:1fr}
  .tools{grid-template-columns:1fr 1fr}
  .tabbar-inner{grid-template-columns:repeat(2,1fr)}
  .tab:nth-child(3n){border-right:1px solid var(--line)}
  .tab:nth-child(2n){border-right:none}
  .footer-main{grid-template-columns:1fr;gap:28px}
  .sub-form{flex-direction:column}
  .sub-form .btn{width:100%}
  .blk{padding:48px 0}
  .blk-head-row{flex-direction:column;align-items:flex-start;gap:12px}
  .feat-body h3{font-size:20px}
  .bulletin-bar{margin:12px 16px 0}
}
@media (prefers-reduced-motion:reduce){ *{animation:none!important;transition:none!important} html{scroll-behavior:auto} }

/* ============================================================
   QiField v4 — 内页组件（沿用 aliyun 风格的克制白底 + 细线）
   ============================================================ */
.page-hero{background:linear-gradient(115deg,var(--deep),var(--deep-2) 60%,var(--blue));color:#fff;padding:52px 0 46px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;inset:0;background:radial-gradient(60% 90% at 82% 10%,rgba(255,255,255,.14),transparent 60%)}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:clamp(26px,3.6vw,38px);font-weight:700;letter-spacing:1px}
.page-hero .crumb{margin-top:14px;font-size:13.5px;color:rgba(255,255,255,.66)}
.page-hero .crumb a{color:rgba(255,255,255,.86)}
.page-hero .crumb a:hover{color:#fff}
.page-hero .crumb .sep{margin:0 8px;color:rgba(255,255,255,.35)}

.layout{display:grid;grid-template-columns:1fr 320px;gap:28px;align-items:start;padding:40px 0 72px}
.layout.no-sidebar{grid-template-columns:1fr;max-width:880px;margin:0 auto}

.entry-card{display:flex;gap:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:18px;transition:box-shadow .3s,transform .3s}
.entry-card:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.entry-thumb{width:240px;border-radius:10px;overflow:hidden;flex-shrink:0;background:var(--bg-2)}
.entry-thumb img{width:100%;height:100%;object-fit:cover}
.entry-body{flex:1;min-width:0}
.entry-body h2{font-size:20px;font-weight:600;color:var(--ink);line-height:1.5}
.entry-body h2 a{color:var(--ink)}
.entry-body h2 a:hover{color:var(--blue)}
.entry-meta{display:flex;align-items:center;gap:16px;margin-top:10px;font-size:13px;color:var(--muted)}
.entry-excerpt{margin-top:11px;font-size:14.5px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.read-more{display:inline-block;margin-top:13px;font-size:14px;color:var(--blue);font-weight:500}

.single-article{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px 44px}
.single-head .entry-cat{display:inline-block;padding:4px 13px;border-radius:6px;background:rgba(22,119,255,.1);color:var(--blue);font-size:13px;font-weight:500}
.single-head h1{margin-top:14px;font-size:clamp(24px,3.4vw,34px);font-weight:700;color:var(--ink);line-height:1.4}
.single-head .entry-meta{margin-top:14px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.entry-content{margin-top:28px;font-size:16px;line-height:2;color:#2b3240}
.entry-content h2,.entry-content h3,.entry-content h4{margin:1.5em 0 .65em;color:var(--ink);font-weight:600;line-height:1.45}
.entry-content h2{font-size:22px}
.entry-content h3{font-size:18.5px}
.entry-content p{margin-bottom:1.1em}
.entry-content a{border-bottom:1px solid rgba(22,119,255,.35)}
.entry-content img{border-radius:10px;margin:1.2em auto}
.entry-content blockquote{margin:1.5em 0;padding:18px 22px;background:var(--bg-2);border-left:3px solid var(--blue);border-radius:0 10px 10px 0;color:var(--text)}
.entry-content blockquote p{margin:0}
.entry-content pre{background:#0b1220;color:#dbe4f0;padding:20px 24px;border-radius:10px;overflow:auto;font-size:14px;line-height:1.8}
.entry-content code{font-family:Consolas,Monaco,monospace}
.entry-content ul,.entry-content ol{margin:0 0 1.1em 1.5em}
.entry-content ul li{list-style:disc;margin-bottom:.4em}
.entry-content ol li{list-style:decimal;margin-bottom:.4em}
.entry-content table{width:100%;border-collapse:collapse;margin:1.3em 0;font-size:14.5px}
.entry-content th,.entry-content td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.entry-content th{background:var(--bg-2);color:var(--ink)}
.entry-content hr{border:none;height:1px;background:var(--line);margin:2.2em 0}
.single-tags{margin-top:30px;padding-top:20px;border-top:1px solid var(--line);font-size:13.5px}
.single-tags a{display:inline-block;padding:5px 14px;margin:4px 8px 0 0;border-radius:6px;background:var(--bg-2);color:var(--text);font-size:13px}
.single-tags a:hover{background:var(--blue);color:#fff}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:22px}
.post-nav a{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;color:var(--ink);font-size:15px;font-weight:600;transition:box-shadow .25s,transform .25s}
.post-nav a:hover{box-shadow:var(--shadow);transform:translateY(-2px);color:var(--ink)}
.post-nav small{display:block;font-size:12.5px;color:var(--muted);font-weight:400;margin-bottom:5px}
.post-nav .next{text-align:right}

.sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:84px}
.widget{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}
.widget-title{font-size:16.5px;font-weight:700;color:var(--ink);margin-bottom:14px}
.widget ul li{margin-bottom:10px;font-size:14.5px}
.widget ul li a{color:var(--text)}
.widget ul li a:hover{color:var(--blue)}
.searchform{display:flex;background:var(--bg-2);border:1px solid var(--line);border-radius:8px;padding:3px 3px 3px 14px}
.searchform input{flex:1;min-width:0;border:none;background:none;outline:none;font-size:14px;color:var(--ink)}
.searchform button{border:none;background:var(--blue);color:#fff;width:36px;height:36px;border-radius:6px;cursor:pointer;flex-shrink:0}

.pagination{display:flex;gap:8px;justify-content:center;margin-top:34px;flex-wrap:wrap}
.pagination .page-numbers{min-width:40px;height:40px;display:grid;place-items:center;padding:0 14px;border-radius:8px;background:#fff;border:1px solid var(--line);color:var(--text);font-size:14.5px;font-weight:500}
.pagination .page-numbers:hover{border-color:var(--blue);color:var(--blue)}
.pagination .page-numbers.current{background:var(--blue);border-color:var(--blue);color:#fff}
.pagination .page-numbers.dots{border:none;background:none}

.site-visit{max-width:820px;margin:44px auto 72px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:64px 48px;text-align:center}
.site-visit .site-icon-lg{width:96px;height:96px;border-radius:20px;margin:0 auto 22px;display:grid;place-items:center;background:var(--bg-2);overflow:hidden}
.site-visit .site-icon-lg img{width:100%;height:100%;object-fit:cover}
.site-visit .site-icon-lg .letter{font-size:40px;font-weight:700;color:var(--blue)}
.site-visit h1{font-size:clamp(24px,3.2vw,32px);font-weight:700;color:var(--ink)}
.site-desc{margin:14px auto 0;max-width:560px;font-size:15.5px;color:var(--text)}
.site-visit .btn{margin-top:28px}

.tag-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tag-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;transition:box-shadow .25s,transform .25s}
.tag-card:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.tag-card .tag-name{font-size:16.5px;font-weight:600;color:var(--ink)}
.tag-card .tag-meta{margin-top:6px;font-size:13px;color:var(--muted)}
.tag-card .tag-desc{margin-top:10px;font-size:13.5px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tag-mini{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag-mini a{padding:7px 16px;border-radius:6px;background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--text)}
.tag-mini a:hover{border-color:var(--blue);color:var(--blue)}
.tag-mini a b{color:var(--seal)}

.notfound{text-align:center;padding:96px 0}
.notfound .code{font-size:clamp(88px,15vw,150px);font-weight:800;line-height:1;background:linear-gradient(120deg,var(--blue),var(--seal));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.notfound h1{margin-top:8px;font-size:clamp(20px,2.6vw,26px);font-weight:600;color:var(--ink)}
.notfound p{margin-top:14px;color:var(--text)}
.notfound .btn{margin-top:28px}

@media (max-width:1120px){ .layout{grid-template-columns:1fr} .sidebar{position:static;display:grid;grid-template-columns:1fr 1fr} .tag-wall{grid-template-columns:repeat(3,1fr)} }
@media (max-width:900px){ .single-article{padding:32px 26px} .entry-card{flex-direction:column} .entry-thumb{width:100%} .post-nav{grid-template-columns:1fr} .tag-wall{grid-template-columns:repeat(2,1fr)} }
@media (max-width:640px){ .sidebar{grid-template-columns:1fr} .tag-wall{grid-template-columns:1fr} .single-article{padding:26px 18px} }

/* ============================================================
   QiField v4 — 补齐：模板用到的类名（这些结构曾只存在于可选的 v2/v3 样式表，
   关闭「经典视觉」后会裸奔 —— 与 1.6.1 首页错乱事故同类，此处做永久兜底）
   ============================================================ */

/* ---- 首页：banner 主列 / 订阅表单容器 / 工具带容器 ---- */
.banner-main{min-width:0}
.sub-box-inner{display:block}
.toolband-inner{padding:56px 24px}

/* ---- 通用区块头（section-head 系列，AI 导航页用） ---- */
.section{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:var(--container);margin:0 auto 40px;padding:0 24px}
.section-head .kicker{display:inline-block;font-size:14px;color:var(--blue);font-weight:600;letter-spacing:1px}
.section-head h2,.section-head .sec-title{margin-top:10px;font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--ink);letter-spacing:1px}
.section-head .sec-title .grad{background:linear-gradient(120deg,var(--blue),var(--seal));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section-head p{max-width:640px;font-size:15px;color:var(--text);margin-top:10px}
.section-head .more{font-size:14.5px;color:var(--blue);font-weight:500;white-space:nowrap;padding-bottom:6px}
.section-head.center{display:block;text-align:center;max-width:760px}
.section-head.center p{margin:12px auto 0}

/* ---- AI 导航目录（archive-sites / template-ainav） ---- */
.dir-section{background:var(--bg-2)}
.dir-wrap{max-width:var(--container);margin:0 auto;padding:0 24px}
.term-chips{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.term-chips a{padding:8px 20px;border-radius:99px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--text);transition:all .2s}
.term-chips a:hover{border-color:var(--blue);color:var(--blue)}
.term-chips a.is-active{background:var(--blue);border-color:var(--blue);color:#fff}
.dir-group{max-width:var(--container);margin:0 auto 44px;padding:0 24px}
.dir-group-head{display:flex;align-items:baseline;gap:14px;margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.dir-group-head h2{font-size:22px;font-weight:700;color:var(--ink);letter-spacing:1px}
.dir-group-head .count{font-size:13px;color:var(--muted)}
.dir-group-head .more{margin-left:auto;font-size:14px;font-weight:500;color:var(--blue);white-space:nowrap}
.dir-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.dir-card{display:flex;gap:16px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:box-shadow .3s,transform .3s}
.dir-card:hover{box-shadow:var(--shadow-h);transform:translateY(-3px)}
.dir-card .site-icon{width:52px;height:52px;border-radius:12px;overflow:hidden;background:#eef2f9;display:grid;place-items:center;flex-shrink:0}
.dir-card .site-icon img{width:100%;height:100%;object-fit:cover}
.dir-card .site-icon .letter{font-size:20px;font-weight:700;color:var(--blue)}
.dir-card .site-info{min-width:0;flex:1}
.dir-card .site-info h3{font-size:16px;font-weight:600;color:var(--ink);line-height:1.45}
.dir-card .site-info h3 a{color:var(--ink)}
.dir-card .site-info h3 a:hover{color:var(--blue)}
.dir-card .site-info p{margin-top:7px;font-size:13px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.dir-card .site-link{display:inline-block;margin-top:9px;font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}
.dir-card .site-link:hover{color:var(--blue)}
.latest-empty{color:var(--muted);text-align:center}

/* ---- 抽屉关闭按钮（header.php） ---- */
.drawer-close{width:38px;height:38px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);display:grid;place-items:center;cursor:pointer;flex-shrink:0}
.drawer-close:hover{color:var(--blue);border-color:var(--blue)}

/* ---- 文章上下篇（single.php 的 .prev） ---- */
.post-nav .prev{text-align:left}

/* ---- 页脚：v4 深色版（footer.php 用 .footer-grid/.footer-disclaimer） ---- */
.site-footer{background:#0b1220;color:var(--muted);font-size:14px}
.site-footer::before{background:linear-gradient(90deg,var(--blue),var(--seal))}
.footer-grid{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:40px;padding:52px 24px 36px}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand p{margin-top:10px;font-size:13px;line-height:1.9;color:var(--muted);max-width:300px}
.footer-brand .brand-zh{color:#fff}
.footer-brand .brand-en{color:rgba(255,255,255,.5)}
.footer-col h4{font-size:14.5px;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--muted)}
.footer-col a:hover{color:#fff}
.footer-disclaimer{border-top:1px solid rgba(255,255,255,.08)}
.footer-disclaimer{padding:18px 24px;font-size:12.5px;color:rgba(255,255,255,.5);line-height:1.8}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;max-width:var(--container);margin:0 auto;padding:0 24px 26px;font-size:12.5px;color:rgba(255,255,255,.45)}

/* ---- 订阅表单按钮（subscribe.php 输出 .btn-accent，v4 主题色为蓝） ---- */
.sub-form .btn-accent{background:var(--blue);color:#fff;border-radius:8px;padding:0 30px;font-weight:500}
.sub-form .btn-accent:hover{background:var(--blue-d);color:#fff}
.sub-box .cta-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.6);text-align:left}
.sub-box .sub-notice.is-ok,.sub-box .sub-message.is-ok{color:#95f0c0}
.sub-box .sub-notice.is-err,.sub-box .sub-message.is-err{color:#ffb3ad}

/* ---- 公告条（bulletin）在白底 banner 下方不撞色 ---- */
.bulletin-bar{margin-top:18px}

/* ---- 响应式补齐 ---- */
@media (max-width:1120px){
  .dir-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .dir-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 24px 30px}
  .toolband-inner{padding:44px 16px}
}
@media (max-width:640px){
  .dir-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section{padding:40px 0}
  .section-head{padding:0 16px}
  .dir-wrap,.dir-group{padding-left:16px;padding-right:16px}
}