/* 必赢亚洲 官网样式 — AI Food Operations Lab / Smart Inventory Console
   深石墨 · 墨绿 · 冷青 · 冷白 · 食品橙 */
:root{
  --ink:#0d171a; --ink-2:#132226; --ink-3:#1b3136; --ink-line:#2b474d;
  --g9:#0e3a2b; --g8:#14503d; --g7:#1b6a50; --g5:#2f9e72; --g1:#e1f3e9;
  --c6:#0d9493; --c5:#18b3ae; --c3:#72d9d3; --c1:#ddf4f2;
  --white:#fff; --cold:#f2f8f8; --cold2:#e6f0f1;
  --o5:#ee8a26; --o6:#cf6f0e; --o1:#fdeddb;
  --text:#172a2e; --muted:#4d6368; --line:#d3e2e3;
  --r:14px; --shadow:0 14px 34px -18px rgba(13,23,26,.35);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono","SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.8 var(--font);color:var(--text);background:var(--white);overflow-wrap:break-word}
img,svg{max-width:100%;height:auto;vertical-align:middle}
a{color:var(--c6);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--o6)}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .6em;color:var(--ink)}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.1em;padding-left:1.3em}
li{margin-bottom:.35em}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.grid,.obs-grid,.teaser-grid,.qa-grid,.compare,.about-box,.footer-grid,.news-list,.page-hero .wrap{grid-template-columns:minmax(0,1fr)}
.grid>*,.obs-grid>*,.teaser-grid>*,.qa-grid>*,.compare>*,.about-box>*,.footer-grid>*,.news-list>*,.post-split>*,.post-layout>*,.hero-grid>*{min-width:0}
.skip-link{position:absolute;left:-999px;top:0;background:var(--o5);color:#fff;padding:8px 14px;z-index:99}
.skip-link:focus{left:8px;top:8px}

/* ---------- 顶栏与导航 ---------- */
.topbar{background:var(--ink);color:var(--c3);font:12px/1 var(--mono);letter-spacing:.06em}
.topbar .wrap{display:flex;justify-content:space-between;gap:12px;padding-top:9px;padding-bottom:9px}
.topbar span:last-child{color:#8fb0b3;font-family:var(--font);letter-spacing:0}
.site-header{position:sticky;top:0;z-index:50;background:rgba(13,23,26,.97);border-bottom:1px solid var(--ink-line);backdrop-filter:blur(6px)}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700;font-size:20px;letter-spacing:.04em;white-space:nowrap}
.brand small{display:block;font:10px/1.2 var(--mono);color:var(--c3);letter-spacing:.14em;font-weight:400}
.brand img{width:34px;height:34px}
.main-nav{display:none;align-items:center;gap:2px}
.main-nav a{color:#c6dcde;text-decoration:none;font-size:13.5px;padding:8px 9px;border-radius:8px;white-space:nowrap}
.main-nav a:hover{background:var(--ink-3);color:#fff}
.main-nav a[aria-current="page"],.main-nav a[aria-current="true"]{color:var(--ink);background:var(--c3);font-weight:600}
.nav-toggle{background:none;border:1px solid var(--ink-line);border-radius:8px;width:44px;height:40px;cursor:pointer;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:11px;width:20px;height:2px;background:#dff;content:"";transition:.2s}
.nav-toggle span{top:18px}
.nav-toggle span::before{top:-6px;left:0}
.nav-toggle span::after{top:6px;left:0}
.site-header.is-open .main-nav{display:flex;flex-direction:column;align-items:stretch;position:absolute;left:0;right:0;top:100%;background:var(--ink);padding:10px 20px 18px;border-bottom:1px solid var(--ink-line);max-height:calc(100vh - 100px);overflow:auto}
.site-header.is-open .main-nav a{font-size:16px;padding:12px 10px;border-bottom:1px solid var(--ink-3);border-radius:0}
.header-cta{display:none}
@media(min-width:1240px){
  .nav-toggle{display:none}
  .main-nav{display:flex}
  .header-cta{display:none}
}
.breadcrumb{background:var(--cold);border-bottom:1px solid var(--line);font-size:13.5px;color:var(--muted)}
.breadcrumb .wrap{padding-top:10px;padding-bottom:10px}
.breadcrumb a{color:var(--c6);text-decoration:none}
.breadcrumb .sep{margin:0 8px;color:#9ab}
.breadcrumb .current{display:inline-block;max-width:min(64ch,66vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom}

/* ---------- 按钮与标签 ---------- */
.btn{display:inline-block;padding:11px 22px;border-radius:999px;font-weight:600;font-size:15px;text-decoration:none;border:1px solid transparent;transition:.2s;cursor:pointer}
.btn-primary{background:var(--o5);color:#1b1206}
.btn-primary:hover{background:#ffa243;color:#1b1206}
.btn-ghost{border-color:var(--c3);color:var(--c3);background:transparent}
.btn-ghost:hover{background:rgba(114,217,211,.12);color:#fff}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--g8);color:#fff}
.btn[aria-disabled="true"]{opacity:.65;cursor:not-allowed;pointer-events:none}
.kicker,.eyebrow{display:inline-block;font:600 12.5px/1 var(--mono);letter-spacing:.14em;color:var(--c6);text-transform:uppercase;margin-bottom:12px}
.eyebrow{color:var(--c3)}
.tag{display:inline-block;font-size:12.5px;padding:3px 10px;border-radius:999px;background:var(--c1);color:var(--c6);margin:0 6px 6px 0}
.tags{margin:18px 0 0}

/* ---------- 区块 ---------- */
.section{padding:64px 0}
.section-alt{background:var(--cold)}
.section-dark{background:var(--ink);color:#d3e6e7}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}
.section-dark .kicker{color:var(--c3)}
.section-green{background:linear-gradient(135deg,var(--g9),var(--ink-2));color:#d8eee4}
.section-green h2,.section-green h3{color:#fff}
.section-green .kicker{color:var(--c3)}
.section-head{max-width:820px;margin:0 0 34px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(24px,3.4vw,34px)}
.section-head p{color:var(--muted);font-size:16.5px}
.section-dark .section-head p,.section-green .section-head p{color:#a9c8cb}
.grid{display:grid;gap:22px}
@media(min-width:720px){.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(min-width:720px) and (max-width:1000px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow)}
.card h3{font-size:18px}
.card p:last-child{margin-bottom:0}
.section-dark .card{background:var(--ink-2);border-color:var(--ink-line);box-shadow:none}

/* ---------- 首页 Hero ---------- */
.hero{background:radial-gradient(900px 420px at 85% -10%,rgba(24,179,174,.28),transparent 60%),radial-gradient(600px 360px at 0% 100%,rgba(47,158,114,.25),transparent 60%),var(--ink);color:#cfe3e4;padding:56px 0 0;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(114,217,211,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(114,217,211,.06) 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(#000,transparent 85%);-webkit-mask-image:linear-gradient(#000,transparent 85%);pointer-events:none}
.hero-grid{position:relative;display:grid;gap:34px;grid-template-columns:minmax(0,1fr)}
@media(min-width:980px){.hero-grid{grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);align-items:center;gap:48px}}
.hero h1{color:#fff;font-size:clamp(28px,4.4vw,44px);line-height:1.28;letter-spacing:.01em}
.hero h1 em{font-style:normal;color:var(--c3)}
.hero .lead{font-size:17px;color:#b8d3d5}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 8px}
.hero-figure{background:var(--ink-2);border:1px solid var(--ink-line);border-radius:18px;padding:12px;box-shadow:0 24px 60px -30px #000}
.hero-figure img{border-radius:10px;width:100%}
.hero-figure figcaption{font-size:13px;color:#8fb0b3;padding:10px 6px 2px;line-height:1.6}
.chain{position:relative;list-style:none;margin:34px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px 6px;counter-reset:chain}
.chain li{margin:0;counter-increment:chain;font:13px/1.2 var(--mono);color:#dff;background:var(--ink-3);border:1px solid var(--ink-line);border-radius:999px;padding:8px 12px 8px 10px;white-space:nowrap}
.chain li::before{content:counter(chain,decimal-leading-zero);color:var(--o5);margin-right:8px}
.chain li:nth-child(odd){background:#163035}
.hero-strip{position:relative;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--ink-line);margin-top:44px;border:1px solid var(--ink-line);border-bottom:0;border-radius:14px 14px 0 0;overflow:hidden}
.hero-strip div{background:var(--ink-2);padding:16px 18px}
.hero-strip b{display:block;color:var(--o5);font:600 12.5px/1.4 var(--mono);letter-spacing:.1em}
.hero-strip span{font-size:14px;color:#c1d9db}
@media(min-width:900px){.hero-strip{grid-template-columns:repeat(4,minmax(0,1fr))}}

/* ---------- 二级页 Hero ---------- */
.page-hero{background:linear-gradient(120deg,var(--ink) 0%,var(--g9) 100%);color:#c9dfe0;padding:46px 0 42px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(24,179,174,.3),transparent 68%)}
.page-hero .wrap{position:relative;z-index:1;display:grid;gap:28px}
@media(min-width:980px){.page-hero .wrap{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:center}}
.page-hero h1{color:#fff;font-size:clamp(26px,3.8vw,38px)}
.page-hero .lead{font-size:16.5px;color:#b5d0d2;margin-bottom:0}
.toc{background:rgba(255,255,255,.06);border:1px solid var(--ink-line);border-radius:14px;padding:18px 20px}
.toc h2{font:600 12.5px/1 var(--mono);letter-spacing:.14em;color:var(--c3);margin:0 0 10px;text-transform:uppercase}
.toc ol{margin:0;padding-left:1.2em}
.toc li{margin-bottom:.5em;font-size:14.5px;line-height:1.6}
.toc a{color:#e6f4f4;text-decoration:none}
.toc a:hover{color:var(--o5)}

/* ---------- 文章元信息 ---------- */
.post-meta{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;font-size:13.5px;color:var(--muted);margin:0 0 12px}
.post-meta .cat{font:600 12.5px/1 var(--mono);background:var(--o1);color:var(--o6);padding:5px 10px;border-radius:6px;letter-spacing:.04em}
.post-meta time{color:var(--text);font-weight:500}
.section-dark .post-meta,.section-green .post-meta{color:#94b5b8}
.section-dark .post-meta time,.section-green .post-meta time{color:#e3f2f2}
.post-title{font-size:clamp(23px,3.3vw,32px);line-height:1.36;letter-spacing:.005em}

/* ---------- 首页重点文章 / 二级完整文章 ---------- */
.post{padding:60px 0;border-top:1px solid var(--line)}
.post:first-of-type{border-top:0}
.post-split{display:grid;gap:30px;grid-template-columns:minmax(0,1fr)}
.post-figure{margin:0}
@media(min-width:1000px){
  .post-split{grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:52px;align-items:start}
  .post-split.flip{grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr)}
  .post-split.flip .post-figure{order:-1}
  .post-split .post-figure{position:sticky;top:100px}
}
.post-layout{display:grid;gap:30px;grid-template-columns:minmax(0,1fr)}
@media(min-width:1000px){.post-layout{grid-template-columns:minmax(0,1fr) 290px;gap:54px}}
.post-aside{align-self:start;background:var(--cold);border:1px solid var(--line);border-left:4px solid var(--o5);border-radius:12px;padding:18px 20px;font-size:14.5px}
@media(min-width:1000px){.post-aside{position:sticky;top:100px}}
.post-aside h4{font:600 12.5px/1 var(--mono);letter-spacing:.12em;color:var(--o6);margin:0 0 12px;text-transform:uppercase}
.post-aside ul{padding-left:1.1em;margin:0}
.post-aside li{margin-bottom:.6em}
.post-body{max-width:780px}
.post-body h3{font-size:20px;margin:1.7em 0 .55em;padding-left:12px;border-left:4px solid var(--c5)}
.post-body h4{font-size:17px;margin:1.4em 0 .4em;color:var(--g8)}
.post-body p,.post-body li{font-size:16.5px;line-height:1.92}
.post-body strong{color:var(--ink)}
.post-body blockquote{margin:1.4em 0;padding:14px 18px;border-left:4px solid var(--c5);background:var(--c1);border-radius:0 10px 10px 0;color:#12474a}
.post-body blockquote p:last-child{margin:0}
.pull{font-size:20px;line-height:1.6;font-weight:600;color:var(--g8);border-top:3px solid var(--o5);border-bottom:1px solid var(--line);padding:16px 2px;margin:1.6em 0}
.fig{margin:1.6em 0}
.fig img{width:100%;border-radius:12px;background:var(--ink);border:1px solid var(--ink-line)}
.fig figcaption{font-size:13.5px;line-height:1.65;color:var(--muted);padding:9px 4px 0}
.post-figure.fig{margin:0}
.callout{margin:1.5em 0;padding:16px 20px;border:1px solid #f3cf9f;background:var(--o1);border-radius:12px}
.callout.green{border-color:#b6dcc8;background:var(--g1)}
.callout.cyan{border-color:#a9dcd9;background:var(--c1)}
.callout p:last-child,.callout ul:last-child{margin-bottom:0}
.callout .callout-title{font-weight:700;color:var(--ink);margin-bottom:.35em;font-size:15px}
.calc{margin:1.5em 0;background:var(--ink);color:#d7eeee;border-radius:12px;padding:16px 20px;border:1px solid var(--ink-line)}
.calc .calc-title{font:600 12.5px/1.3 var(--mono);letter-spacing:.1em;color:var(--c3);margin:0 0 8px;text-transform:uppercase}
.calc pre{margin:0;font:14px/1.85 var(--mono);white-space:pre-wrap;word-break:break-word}
.calc .hl{color:var(--o5)}
.stat-row{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr));margin:1.5em 0}
@media(min-width:720px){.stat-row{grid-template-columns:repeat(4,minmax(0,1fr))}.stat-row.three{grid-template-columns:repeat(3,minmax(0,1fr))}}
.stat{background:var(--cold);border:1px solid var(--line);border-radius:12px;padding:14px 14px 12px}
.stat b{display:block;font:700 26px/1.15 var(--mono);color:var(--g7)}
.stat span{font-size:13px;line-height:1.5;color:var(--muted);display:block;margin-top:4px}
.compare{display:grid;gap:14px;margin:1.5em 0}
@media(min-width:720px){.compare{grid-template-columns:repeat(2,minmax(0,1fr))}}
.compare-col{border:1px solid var(--line);border-radius:12px;padding:16px 18px;background:#fff}
.compare-col.bad{border-top:4px solid var(--o5)}
.compare-col.good{border-top:4px solid var(--g5)}
.compare-col h4{margin:0 0 .5em;font-size:16px}
.compare-col ul{margin:0;padding-left:1.15em}
.compare-col li{font-size:15.5px;line-height:1.75}
.timeline{list-style:none;margin:1.5em 0;padding:0 0 0 20px;border-left:2px solid var(--c5)}
.timeline li{position:relative;padding:0 0 18px 16px;margin:0}
.timeline li::before{content:"";position:absolute;left:-28px;top:9px;width:12px;height:12px;border-radius:50%;background:var(--o5);border:2px solid #fff;box-shadow:0 0 0 2px var(--c5)}
.timeline b{display:inline-block;font:600 14px/1.4 var(--mono);color:var(--o6);margin-right:8px}
.steps{list-style:none;counter-reset:st;margin:1.4em 0;padding:0}
.steps li{counter-increment:st;position:relative;padding:12px 14px 12px 56px;margin:0 0 10px;background:var(--cold);border:1px solid var(--line);border-radius:12px}
.steps li::before{content:counter(st);position:absolute;left:14px;top:11px;width:30px;height:30px;border-radius:50%;background:var(--g8);color:#fff;font:700 15px/30px var(--mono);text-align:center}
.qa{margin:1.4em 0}
.qa dt{font-weight:700;color:var(--ink);margin-top:1em}
.qa dd{margin:.3em 0 0;padding-left:1em;border-left:3px solid var(--c3)}
.table-wrap{overflow-x:auto;margin:1.4em 0;border:1px solid var(--line);border-radius:12px;-webkit-overflow-scrolling:touch}
table.data{border-collapse:collapse;width:100%;min-width:520px;font-size:15px;line-height:1.6}
table.data caption{caption-side:top;text-align:left;font-size:13px;color:var(--muted);padding:10px 14px 0}
table.data th{background:var(--ink);color:#e5f4f4;text-align:left;padding:10px 12px;font-weight:600;white-space:nowrap}
table.data td{padding:10px 12px;border-top:1px solid var(--line);vertical-align:top}
table.data tr:nth-child(even) td{background:var(--cold)}
.sim-note{font-size:13.5px;color:var(--muted);border-left:3px solid var(--o5);padding:2px 0 2px 12px;margin:1.2em 0}
.post-related{margin-top:32px;padding:20px 22px;border:1px dashed var(--c5);border-radius:14px;background:var(--cold)}
.post-related h3{font-size:16px;margin:0 0 10px;color:var(--g8)}
.post-related ul{margin:0;padding-left:1.2em}
.post-related li{font-size:15.5px;margin-bottom:.45em}
.section-dark .post-related{background:var(--ink-2)}
.section-dark .post-related h3{color:var(--c3)}
.section-dark .post-body h3{border-left-color:var(--o5)}
.section-dark .post-body p,.section-dark .post-body li{color:#cfe3e4}
.section-dark .post-body strong{color:#fff}
.section-dark .post-body h4{color:var(--c3)}
.section-dark .post{border-top-color:var(--ink-line)}
.section-dark .fig img{border-color:var(--ink-line)}
.section-dark .fig figcaption{color:#94b5b8}
.section-dark .post-aside{background:var(--ink-2);border-color:var(--ink-line);border-left-color:var(--o5);color:#cfe3e4}
.section-dark .callout{color:var(--text)}
.section-dark .stat{background:var(--ink-2);border-color:var(--ink-line)}
.section-dark .stat b{color:var(--c3)}
.section-dark .stat span{color:#94b5b8}
.section-dark .compare-col{background:var(--ink-2);border-color:var(--ink-line)}
.section-dark .compare-col h4{color:#fff}
.section-dark .table-wrap{border-color:var(--ink-line)}
.section-dark table.data td{border-top-color:var(--ink-line)}
.section-dark table.data tr:nth-child(even) td{background:var(--ink-2)}
.section-dark table.data th{background:var(--g9)}
.section-dark .steps li{background:var(--ink-2);border-color:var(--ink-line)}
.section-dark .pull{color:var(--c3);border-bottom-color:var(--ink-line)}
.section-dark .post-body blockquote{background:var(--ink-2);color:#cfe3e4}
.section-dark .callout p,.section-dark .callout li,.section-dark .callout strong,.section-dark .callout .callout-title{color:var(--text)}
.section-dark .qa dt{color:#fff}
.section-dark .sim-note{color:#94b5b8}
.section-dark .tag{background:var(--ink-3);color:var(--c3)}
.section-dark .post-related a,.section-dark .post-body a{color:var(--c3)}
.section-dark a:not(.btn){color:var(--c3)}
.section-dark a:not(.btn):hover{color:var(--o5)}
.section-dark .teaser h3 a,.section-dark .news-item h3 a{color:#fff}
.post-section{padding:0}
.post-section .post{border-top:0}
:target.post,:target.teaser{animation:hit 1.6s ease-out 1}
@keyframes hit{from{background:rgba(238,138,38,.14)}to{background:transparent}}

/* ---------- 栏目页文章导读卡片 / 文章内页 ---------- */
.entry-list{display:grid;gap:26px}
.entry{display:grid;gap:10px 40px;grid-template-columns:minmax(0,1fr);background:#fff;border:1px solid var(--line);border-left:6px solid var(--c5);border-radius:var(--r);padding:26px 28px;box-shadow:var(--shadow);scroll-margin-top:96px}
.entry:nth-child(even){border-left-color:var(--o5)}
.entry>.post-meta,.entry>.entry-title,.entry>.entry-more{grid-column:1/-1}
.entry-title{font-size:clamp(20px,2.6vw,26px);line-height:1.4;margin:0 0 4px}
.entry-title a{color:var(--ink);text-decoration:none}
.entry-title a:hover{color:var(--o6)}
.entry-body p{font-size:16.5px;line-height:1.92}
.entry-body p:last-child{margin-bottom:0}
.entry-points{align-self:start;background:var(--cold);border:1px solid var(--line);border-left:4px solid var(--o5);border-radius:12px;padding:14px 18px;font-size:14.5px}
.entry-points h4{font:600 12.5px/1 var(--mono);letter-spacing:.12em;color:var(--o6);margin:0 0 10px;text-transform:uppercase}
.entry-points ul{margin:0;padding-left:1.1em}
.entry-points li{margin-bottom:.5em}
.entry-more{margin:6px 0 0}
@media(min-width:1000px){.entry{grid-template-columns:minmax(0,1fr) 300px}}
@media(max-width:600px){.entry{padding:18px}}
.read-full{margin:1.4em 0 0}
.teaser.sibling .teaser-text{font-size:15px}
.post-section .post .post-title{margin-bottom:.4em}

/* ---------- 观察栏目（首页 3 篇） ---------- */
.obs-grid{display:grid;gap:22px}
@media(min-width:1000px){.obs-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.obs{background:#fff;border:1px solid var(--line);border-top:5px solid var(--g5);border-radius:var(--r);padding:26px 26px 20px}
.obs:nth-child(2){border-top-color:var(--o5)}
.obs:nth-child(3){border-top-color:var(--c5)}
.obs h3{font-size:19px;line-height:1.5}
.obs .post-body p{font-size:16px;line-height:1.9}
.obs .post-body{max-width:none}
.obs table.data{min-width:0;font-size:14px}
.obs table.data th{white-space:normal}

/* ---------- 首页摘要卡片 ---------- */
.teaser-grid{display:grid;gap:20px}
@media(min-width:720px){.teaser-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1040px){.teaser-grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}}
.teaser{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 22px 18px;box-shadow:var(--shadow);position:relative}
.teaser::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:0 4px 4px 0;background:var(--c5)}
.teaser h3{font-size:17.5px;line-height:1.5;margin-bottom:.5em}
.teaser h3 a{color:var(--ink);text-decoration:none}
.teaser h3 a:hover{color:var(--o6)}
.teaser .teaser-text{font-size:15.5px;line-height:1.85;color:#3b5156;flex:1}
.teaser .more{font-weight:600;font-size:14.5px;text-decoration:none;color:var(--c6)}
.teaser .more::after{content:" →"}
.teaser.wide{flex-direction:row;gap:0}
.news-list{display:grid;gap:18px}
.news-item{display:grid;gap:8px;background:#fff;border:1px solid var(--line);border-left:5px solid var(--o5);border-radius:var(--r);padding:20px 22px}
@media(min-width:800px){.news-item{grid-template-columns:150px minmax(0,1fr);gap:22px}}
.news-item .news-date{font:600 14px/1.5 var(--mono);color:var(--o6)}
.news-item h3{font-size:18px;margin-bottom:.4em}
.news-item h3 a{color:var(--ink);text-decoration:none}
.news-item h3 a:hover{color:var(--o6)}
.news-item .teaser-text{margin:0 0 .5em;font-size:15.5px;line-height:1.85;color:#3b5156}
.news-item .more{font-weight:600;font-size:14.5px;text-decoration:none}
.news-item .more::after{content:" →"}
.section-dark .teaser,.section-dark .news-item{background:var(--ink-2);border-color:var(--ink-line);box-shadow:none}
.section-dark .teaser h3 a,.section-dark .news-item h3 a{color:#fff}
.section-dark .teaser .teaser-text,.section-dark .news-item .teaser-text{color:#b9d3d5}
.section-dark .teaser .post-meta{color:#94b5b8}

/* ---------- 速答 / FAQ / 关于 ---------- */
.qa-grid{display:grid;gap:14px}
@media(min-width:800px){.qa-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1100px){.qa-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.qa-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.qa-card h3{font-size:16px;margin:0 0 .4em;color:var(--g8)}
.qa-card p{font-size:15px;line-height:1.8;margin:0;color:#3b5156}
.section-dark .qa-card{background:var(--ink-2);border-color:var(--ink-line)}
.section-dark .qa-card h3{color:var(--c3)}
.section-dark .qa-card p{color:#b9d3d5}
.faq{max-width:900px;margin:0}
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:#fff;overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:0;padding:16px 50px 16px 18px;font:600 16.5px/1.55 var(--font);color:var(--ink);cursor:pointer;position:relative}
.faq-q::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font:400 24px/1 var(--mono);color:var(--o5);transition:.2s}
.faq-item.open .faq-q::after{content:"−"}
.faq-item.open{border-color:var(--c5)}
.faq-a{display:none}
.faq-item.open .faq-a{display:block}
.faq-a-inner{padding:0 18px 18px;font-size:16px;line-height:1.9;color:#33484d}
.about-box{display:grid;gap:28px}
@media(min-width:900px){.about-box{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);align-items:start}}
.about-side{background:var(--ink-2);border:1px solid var(--ink-line);border-radius:14px;padding:22px;color:#c9dfe0;font-size:15px}
.about-side dt{font:600 12px/1.4 var(--mono);letter-spacing:.1em;color:var(--c3);margin-top:12px}
.about-side dd{margin:2px 0 0;color:#fff}
.about-side dt:first-child{margin-top:0}
.section-dark .about-box p{color:#c6dcde}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#9dbabd;padding:52px 0 26px;font-size:14.5px}
.footer-grid{display:grid;gap:28px}
@media(min-width:800px){.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:.9em}
.site-footer a{color:#b8d3d5;text-decoration:none}
.site-footer a:hover{color:var(--o5)}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:.5em}
.footer-brand{display:flex;gap:10px;align-items:center;color:#fff;font-size:19px;font-weight:700;margin-bottom:10px}
.footer-brand img{width:32px;height:32px}
.footer-bottom{border-top:1px solid var(--ink-line);margin-top:30px;padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:13.5px}
.icp{color:#8fb0b3}
.icp-number{display:inline-block;min-width:8em;border-bottom:1px dashed var(--ink-line);height:1.1em;vertical-align:bottom}
.back-to-top{position:fixed;right:16px;bottom:18px;width:44px;height:44px;border-radius:50%;background:var(--o5);color:#1b1206;border:0;font-size:20px;cursor:pointer;opacity:0;pointer-events:none;transition:.25s;box-shadow:var(--shadow);z-index:40}
.back-to-top.show{opacity:1;pointer-events:auto}

/* ---------- 参考资料 / 相关阅读列表 ---------- */
.ref-list{font-size:14.5px;line-height:1.75;color:#3b5156;padding-left:1.4em}
.ref-list li{margin-bottom:.55em}
.ref-list a{word-break:break-all}

/* ---------- 移动端细调 ---------- */
@media(max-width:600px){
  body{font-size:16px}
  .section{padding:46px 0}
  .post{padding:42px 0}
  .wrap{padding:0 16px}
  .topbar span:last-child{display:none}
  .hero{padding-top:38px}
  .hero .lead{font-size:16px}
  .chain li{font-size:12px;padding:7px 10px 7px 8px}
  .hero-strip{margin-top:32px}
  .post-body p,.post-body li{font-size:16px;line-height:1.9}
  .pull{font-size:18px}
  .teaser,.obs,.news-item{padding:18px}
  .stat b{font-size:22px}
  .footer-bottom{flex-direction:column}
}
@media(max-width:380px){
  .brand{font-size:18px}
  .brand small{display:none}
  .chain li{white-space:normal}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}