/* 数块智慧物码 知识中心 — 设计系统。由 build.py 复制到 site/assets/style.css，请在 theme/ 中编辑。 */
:root{
  --navy-950:#050f22;--navy-900:#081a36;--navy-800:#0d2547;--navy-700:#14335f;
  --blue-600:#1f5eff;--blue-500:#3b74ff;--blue-50:#eef3ff;
  --teal-500:#10b5a5;--teal-400:#2dd4bf;--teal-50:#e8f8f6;
  --ink:#0d1b2e;--text:#24324a;--muted:#5a6a82;--subtle:#8593a8;
  --line:#e3e8f0;--line-strong:#cfd7e3;--bg:#ffffff;--soft:#f5f7fb;--soft-2:#eef2f8;
  --radius:14px;--radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(13,27,46,.06),0 1px 3px rgba(13,27,46,.05);
  --shadow:0 4px 12px -2px rgba(13,27,46,.08),0 2px 4px -2px rgba(13,27,46,.05);
  --shadow-lg:0 24px 48px -16px rgba(13,27,46,.22);
  --grad:linear-gradient(120deg,#1f5eff 0%,#10b5a5 100%);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --header-h:68px;
}
*,*:before,*:after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 16px)}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img,svg{max-width:100%}
a{color:var(--blue-600);text-decoration:none;transition:color .15s}
a:hover{color:var(--navy-700)}
h1,h2,h3,h4{color:var(--ink);line-height:1.35;letter-spacing:-.01em}
button,input,select,textarea{font:inherit;color:inherit}
button,a,input,select,textarea,summary{touch-action:manipulation}
:focus-visible{outline:3px solid rgba(31,94,255,.45);outline-offset:3px;border-radius:6px}
::selection{background:rgba(31,94,255,.16)}
[hidden]{display:none!important}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.skip{position:absolute;left:12px;top:-80px;background:var(--ink);color:#fff;padding:10px 14px;border-radius:8px;z-index:100}
.skip:focus{top:10px;color:#fff}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s,background .2s}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 1px 12px rgba(13,27,46,.05)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:.02em;white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:17px;font-weight:700;box-shadow:0 6px 14px -6px rgba(31,94,255,.6);flex:none}
.brand small{display:block;font-size:10px;font-weight:500;letter-spacing:.14em;color:var(--subtle);line-height:1.3;margin-top:1px}
.site-nav{display:flex;align-items:center;gap:6px}
.site-nav a{color:var(--text);font-size:15px;padding:8px 14px;border-radius:999px;transition:background .15s,color .15s}
.site-nav a:hover{background:var(--soft-2);color:var(--ink)}
.site-nav a[aria-current="page"]{color:var(--blue-600);font-weight:600}
.site-nav .nav-cta{background:var(--ink);color:#fff;margin-left:8px;padding:8px 18px;font-weight:600}
.site-nav .nav-cta:hover,.site-nav .nav-cta[aria-current="page"]{background:var(--navy-700);color:#fff}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;place-items:center;padding:0}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;transition:transform .2s,background .2s}
.menu-toggle span:before,.menu-toggle span:after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,top .2s}
.menu-toggle span:before{top:-6px}.menu-toggle span:after{top:6px}
.menu-open .menu-toggle span{background:transparent}
.menu-open .menu-toggle span:before{top:0;transform:rotate(45deg)}
.menu-open .menu-toggle span:after{top:0;transform:rotate(-45deg)}
.progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--grad);transition:width .1s linear}

/* ---------- Buttons ---------- */
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 0}
.button,button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 22px;border-radius:999px;border:1px solid var(--line-strong);background:#fff;color:var(--ink);font-size:15px;font-weight:600;cursor:pointer;line-height:1.3;transition:transform .15s,box-shadow .15s,background .15s,border-color .15s,color .15s;text-decoration:none}
.button:hover,button:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow)}
.button.primary,button.primary{background:var(--blue-600);border-color:var(--blue-600);color:#fff;box-shadow:0 8px 20px -8px rgba(31,94,255,.65)}
.button.primary:hover,button.primary:hover{background:#174ee0;border-color:#174ee0;color:#fff}
.button.ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.22);color:#fff}
.button.ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);color:#fff}
.button.light{background:#fff;border-color:#fff;color:var(--ink)}
button:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.button .arrow{transition:transform .15s}.button:hover .arrow{transform:translateX(3px)}

/* ---------- Shared bits ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--blue-600)}
.eyebrow:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal-500);box-shadow:0 0 0 4px rgba(16,181,165,.15)}
.note{font-size:13.5px;color:var(--muted)}
.tag{display:inline-flex;align-items:center;font-size:12px;font-weight:600;line-height:1;padding:6px 10px;border-radius:999px;background:var(--soft-2);color:var(--text);white-space:nowrap}
.tag.t1{background:#eaf1ff;color:#1d4fd7}.tag.t2{background:#e6f7f4;color:#0b7d71}.tag.t3{background:#f2edff;color:#6237d8}
.tag.t4{background:#fff3e2;color:#a85a00}.tag.t5{background:#ffecf0;color:#c02a50}.tag.t6{background:#e9f7ec;color:#1d7a3a}
.tag.status{background:#fff6e5;color:#9a5b00}
.tag.status:before{content:"";width:6px;height:6px;border-radius:50%;background:#f0a020;margin-right:6px}
.section{padding:88px 0}
.section.soft{background:var(--soft)}
.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin:0 0 36px}
.section-heading h2{font-size:clamp(26px,3vw,36px);margin:10px 0 0;font-weight:700}
.section-heading p{margin:0;color:var(--muted);font-size:15px;max-width:460px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--navy-950);color:#c9d5ea;isolation:isolate}
.hero:before{content:"";position:absolute;inset:0;z-index:-2;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:48px 48px;-webkit-mask-image:radial-gradient(ellipse 80% 70% at 60% 30%,#000 30%,transparent 80%);mask-image:radial-gradient(ellipse 80% 70% at 60% 30%,#000 30%,transparent 80%)}
.hero:after{content:"";position:absolute;z-index:-1;width:900px;height:900px;right:-260px;top:-420px;background:radial-gradient(closest-side,rgba(31,94,255,.42),transparent 70%)}
.hero .glow-2{position:absolute;z-index:-1;width:700px;height:700px;left:-280px;bottom:-460px;background:radial-gradient(closest-side,rgba(16,181,165,.28),transparent 70%)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:64px;align-items:center;padding-top:96px;padding-bottom:104px}
.hero .eyebrow{color:#8fb3ff}
.hero h1{color:#fff;font-size:clamp(38px,5vw,64px);line-height:1.18;font-weight:800;letter-spacing:-.02em;margin:22px 0 24px}
.hero h1 .grad{background:linear-gradient(100deg,#7aa6ff 0%,#2dd4bf 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18px;line-height:1.8;max-width:560px;color:#b4c3dc;margin:0}
.hero .actions{margin-top:36px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin:34px 0 0;padding:0;list-style:none;font-size:14px;color:#9fb0cc}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points svg{color:var(--teal-400);flex:none}
.chain{position:relative;background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);padding:26px;box-shadow:0 40px 80px -30px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,255,255,.08);backdrop-filter:blur(6px)}
.chain-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.1)}
.chain-label{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:#8ea2c4}
.chain-code{width:64px;height:64px;padding:6px;background:#fff;border-radius:10px;flex:none}
.chain-code svg{display:block;width:100%;height:100%}
.chain-title{color:#fff;font-weight:600;font-size:15px;margin-top:6px}
.chain ol{list-style:none;margin:0;padding:6px 0 0;position:relative}
.chain ol:before{content:"";position:absolute;left:19px;top:34px;bottom:34px;width:2px;background:linear-gradient(#3b74ff,#2dd4bf);opacity:.55;border-radius:2px}
.chain li{display:flex;gap:16px;align-items:flex-start;padding:16px 0}
.chain li+li{border-top:1px dashed rgba(255,255,255,.08)}
.step-ico{position:relative;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:#0f2a52;border:1px solid rgba(122,166,255,.35);color:#9cc0ff;flex:none}
.step-ico svg{width:20px;height:20px}
.chain strong{display:block;color:#fff;font-size:16.5px;font-weight:600;line-height:1.5}
.chain strong em{font-style:normal;font-family:var(--mono);font-size:12px;color:#6f86ad;margin-right:8px;font-weight:500}
.chain li p{margin:3px 0 0;font-size:13.5px;color:#93a6c6}
.stamp{margin-top:8px;padding:12px 14px;border-radius:10px;background:rgba(45,212,191,.08);border:1px solid rgba(45,212,191,.2);color:#8ee8da;font-size:13.5px;display:flex;align-items:center;gap:10px}
.fade-up{animation:fadeUp .7s cubic-bezier(.2,.7,.2,1) both}
.fade-up.d1{animation-delay:.08s}.fade-up.d2{animation-delay:.16s}.fade-up.d3{animation-delay:.24s}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------- Metrics ---------- */
.metrics-band{position:relative;margin-top:-44px;z-index:2}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}
.metrics>div{padding:26px 32px;display:flex;align-items:center;gap:18px}
.metrics>div+div{border-left:1px solid var(--line)}
.metrics strong{font-size:40px;line-height:1;font-weight:800;letter-spacing:-.03em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.metrics span{font-size:15px;color:var(--muted);line-height:1.5}

/* ---------- Topics ---------- */
.topics{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.topic{position:relative;display:flex;flex-direction:column;gap:14px;padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:var(--text);transition:transform .2s,box-shadow .2s,border-color .2s}
.topic:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:transparent;color:var(--text)}
.topic-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.topic-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center}
.topic-ico svg{width:22px;height:22px}
.topic h3{margin:0;font-size:19px;font-weight:700}
.topic .count{font-size:13px;color:var(--subtle);font-variant-numeric:tabular-nums}
.topic ul{list-style:none;margin:0;padding:0;font-size:14px;color:var(--muted);line-height:1.6}
.topic li{position:relative;padding-left:14px;margin:6px 0;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.topic li:before{content:"";position:absolute;left:0;top:.65em;width:5px;height:5px;border-radius:50%;background:var(--line-strong)}
.topic .go{margin-top:auto;font-size:14px;font-weight:600;color:var(--blue-600)}
.ico-t1{background:#eaf1ff;color:#1d4fd7}.ico-t2{background:#e6f7f4;color:#0b7d71}.ico-t3{background:#f2edff;color:#6237d8}
.ico-t4{background:#fff3e2;color:#a85a00}.ico-t5{background:#ffecf0;color:#c02a50}.ico-t6{background:#e9f7ec;color:#1d7a3a}

/* ---------- Filters & cards ---------- */
.filters{position:sticky;top:calc(var(--header-h) + 8px);z-index:20;display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:12px;margin-bottom:16px;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
.filters label.note{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.search-box{position:relative;flex:1;min-width:220px}
.search-box svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--subtle);pointer-events:none}
.filters input,.filters select{height:46px;border:1px solid var(--line);background:var(--soft);border-radius:12px;padding:0 14px;font-size:15px;transition:border-color .15s,background .15s,box-shadow .15s}
.filters input{width:100%;padding-left:42px}
.filters input:focus,.filters select:focus{outline:none;background:#fff;border-color:var(--blue-500);box-shadow:0 0 0 4px rgba(31,94,255,.12)}
.filters select{min-width:150px;cursor:pointer;-webkit-appearance:none;appearance:none;padding-right:38px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a6a82' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
#result-count{padding:0 8px;white-space:nowrap;font-variant-numeric:tabular-nums}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 28px}
.chip{min-height:36px;padding:6px 16px;border-radius:999px;font-size:14px;font-weight:500;background:#fff;border:1px solid var(--line);color:var(--text);box-shadow:none}
.chip:hover{transform:none;box-shadow:none;border-color:var(--line-strong);background:var(--soft)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.chip small{font-size:12px;opacity:.6;margin-left:2px;font-variant-numeric:tabular-nums}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{position:relative;display:flex;flex-direction:column;min-width:0;padding:24px 24px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:transform .2s,box-shadow .2s,border-color .2s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:transparent}
.card .meta{display:flex;justify-content:space-between;align-items:center;gap:10px}
.card .id{font-family:var(--mono);font-size:12px;color:var(--subtle);letter-spacing:.04em}
.card h3{font-size:18px;font-weight:700;line-height:1.55;margin:16px 0 10px}
.card h3 a{color:var(--ink)}
.card h3 a:after{content:"";position:absolute;inset:0;border-radius:inherit}
.card h3 a:hover{color:var(--blue-600)}
.card p{margin:0 0 20px;font-size:14.5px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card .more{margin-top:auto;font-size:14px;font-weight:600;color:var(--blue-600);display:inline-flex;align-items:center;gap:6px}
.card .more svg{transition:transform .2s}.card:hover .more svg{transform:translateX(4px)}
.empty{margin-top:20px;padding:44px 24px;text-align:center;border:1.5px dashed var(--line-strong);border-radius:var(--radius);color:var(--muted);background:var(--soft)}

/* ---------- CTA banner ---------- */
.banner{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:40px;padding:56px;border-radius:24px;background:radial-gradient(600px 300px at 90% 0%,rgba(16,181,165,.35),transparent 70%),radial-gradient(500px 300px at 0% 100%,rgba(31,94,255,.45),transparent 70%),var(--navy-900);color:#b9c7de}
.banner .eyebrow{color:#8ee8da}
.banner h2{color:#fff;font-size:clamp(24px,3vw,34px);margin:12px 0 12px;font-weight:700}
.banner p{margin:0;max-width:620px;font-size:15.5px}
.banner .button{flex:none}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy-950);color:#8c9cb8;font-size:14px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:48px;padding-top:64px;padding-bottom:40px}
.site-footer .brand{color:#fff}.site-footer .brand small{color:#6b7c99}
.site-footer p{margin:16px 0 0;max-width:420px;line-height:1.8}
.site-footer h4{color:#fff;font-size:14px;margin:4px 0 14px;font-weight:600;letter-spacing:.04em}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:9px 0}
.site-footer a{color:#a9b7cf}.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:22px;padding-bottom:30px;display:flex;justify-content:space-between;gap:20px;font-size:13px;color:#6f80a0}

/* ---------- Page header (inner pages) ---------- */
.page-hero{background:linear-gradient(180deg,var(--soft) 0%,#fff 100%);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-hero:before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(13,27,46,.07) 1px,transparent 1px);background-size:22px 22px;-webkit-mask-image:linear-gradient(90deg,transparent 30%,#000 100%);mask-image:linear-gradient(90deg,transparent 30%,#000 100%);pointer-events:none}
.page-hero .wrap{position:relative}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:28px;font-size:13.5px;color:var(--muted)}
.crumb a{color:var(--muted)}.crumb a:hover{color:var(--blue-600)}
.crumb .sep{color:var(--line-strong)}
.article-head{padding:40px 0 48px;max-width:860px}
.article-head h1{font-size:clamp(30px,3.6vw,46px);line-height:1.3;font-weight:800;letter-spacing:-.02em;margin:16px 0 18px}
.article-head>p{font-size:17px;color:var(--muted);max-width:720px;margin:0}
.byline{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;font-size:14px;color:var(--muted)}
.byline span{display:inline-flex;align-items:center;gap:6px}
.byline svg{color:var(--subtle)}
.head-tags{display:flex;align-items:center;gap:10px;flex-wrap:wrap}

/* ---------- Article layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,720px) 260px;justify-content:space-between;gap:64px;align-items:start;padding-top:48px}
.article{min-width:0;font-size:17px;line-height:1.95;color:var(--text)}
.article>*:first-child{margin-top:0}
.answer{position:relative;margin:0 0 40px;padding:24px 26px 24px 28px;border-radius:var(--radius);background:linear-gradient(135deg,var(--blue-50),var(--teal-50));border:1px solid #d6e3ff;font-size:16.5px;line-height:1.85;color:var(--ink)}
.answer:before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:4px;border-radius:0 4px 4px 0;background:var(--grad)}
.answer b{display:flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--blue-600);margin-bottom:8px}
.article h2{font-size:26px;font-weight:700;margin:56px 0 18px;line-height:1.45;padding-top:4px}
.article h3{font-size:20px;margin:36px 0 12px}
.article p{margin:18px 0}
.article ul,.article ol{padding-left:1.4em;margin:18px 0}
.article li{margin:8px 0}
.article li::marker{color:var(--blue-600)}
.article a{overflow-wrap:anywhere;text-decoration:underline;text-decoration-color:rgba(31,94,255,.3);text-underline-offset:3px}
.article a:hover{text-decoration-color:currentColor}
.article a.button{text-decoration:none}
.article blockquote{margin:28px 0;padding:6px 0 6px 22px;border-left:3px solid var(--teal-500);color:var(--muted);font-size:16.5px}
.article strong{color:var(--ink)}
.table-wrap{margin:28px 0;overflow-x:auto;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-sm);-webkit-overflow-scrolling:touch}
.article table{width:100%;border-collapse:collapse;font-size:14.5px;line-height:1.7;background:#fff}
.article th,.article td{padding:13px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);min-width:120px}
.article th{background:var(--soft);font-weight:600;color:var(--ink);font-size:13.5px;letter-spacing:.02em;white-space:nowrap}
.article tbody tr:last-child td{border-bottom:0}
.article tbody tr:nth-child(even) td{background:#fafbfd}
.article tbody tr:hover td{background:var(--blue-50)}
.article td:first-child{font-weight:600;color:var(--ink)}
/* TOC */
.toc{position:sticky;top:calc(var(--header-h) + 28px);font-size:14px;max-height:calc(100vh - var(--header-h) - 56px);overflow:auto}
.toc-box{border:1px solid var(--line);border-radius:var(--radius);padding:18px 16px 14px;background:#fff}
.toc summary,.toc b{display:flex;align-items:center;gap:8px;list-style:none;font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--subtle);margin-bottom:8px;cursor:pointer}
.toc summary::-webkit-details-marker{display:none}
.toc a{display:block;position:relative;padding:7px 10px 7px 14px;margin:2px 0;border-radius:8px;color:var(--muted);line-height:1.55;font-size:14px}
.toc a:before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:2px;border-radius:2px;background:var(--line)}
.toc a:hover{background:var(--soft);color:var(--ink)}
.toc a.active{color:var(--blue-600);background:var(--blue-50);font-weight:600}
.toc a.active:before{background:var(--blue-600)}
.toc .side-cta{margin-top:16px;padding:18px;border-radius:var(--radius);background:var(--navy-900);color:#b9c7de;font-size:13.5px;line-height:1.7}
.toc .side-cta strong{display:block;color:#fff;font-size:15px;margin-bottom:6px}
.toc .side-cta .button{margin-top:12px;min-height:38px;padding:6px 16px;font-size:14px;width:100%}
/* FAQ */
.faq{margin-top:56px}
.faq details{border:1px solid var(--line);border-radius:12px;margin:10px 0;background:#fff;transition:border-color .15s,box-shadow .15s}
.faq details[open]{border-color:#cdd9f5;box-shadow:var(--shadow)}
.faq summary{cursor:pointer;list-style:none;padding:16px 52px 16px 20px;font-weight:600;color:var(--ink);position:relative;font-size:16px;line-height:1.6}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"";position:absolute;right:20px;top:50%;width:18px;height:18px;margin-top:-9px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231f5eff' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E") center/contain no-repeat;transition:transform .2s}
.faq details[open] summary:after{transform:rotate(45deg)}
.faq details p{margin:0;padding:0 20px 18px;color:var(--muted);font-size:15.5px}
/* Sources */
.sources{margin-top:56px;padding:28px;border-radius:var(--radius);background:var(--soft);font-size:14px;line-height:1.7;color:var(--muted)}
.sources h2{margin-top:0;font-size:20px}
.sources ol{padding-left:1.3em;margin:16px 0 0}
.sources li{padding-bottom:12px;margin:0}
.sources li::marker{color:var(--subtle);font-variant-numeric:tabular-nums}
.source-scope{font-size:13px;color:var(--subtle);margin-top:2px}
/* Callouts */
.callout{position:relative;overflow:hidden;margin:48px 0;padding:32px;border-radius:var(--radius-lg);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
.callout h2{margin:8px 0 10px;font-size:22px}
.callout p{margin:10px 0}
.callout.dark{background:radial-gradient(420px 220px at 100% 0%,rgba(16,181,165,.35),transparent 70%),radial-gradient(420px 260px at 0% 100%,rgba(31,94,255,.4),transparent 70%),var(--navy-900);border:0;color:#b9c7de}
.callout.dark h2{color:#fff}.callout.dark .eyebrow{color:#8ee8da}.callout.dark .note{color:#8c9cb8}
.callout.dark .button{margin-top:10px}
.related{margin-top:56px}
.related h2{font-size:20px;margin-bottom:16px}
.related-list{display:grid;gap:12px}
.related-list a{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border:1px solid var(--line);border-radius:12px;color:var(--ink);font-weight:600;font-size:15.5px;line-height:1.6;text-decoration:none;transition:border-color .15s,background .15s,transform .15s}
.related-list a:hover{border-color:#bcd0ff;background:var(--blue-50);color:var(--blue-600)}
.related-list small{display:block;font-weight:500;font-size:12.5px;color:var(--subtle);margin-bottom:2px}
.related-list svg{flex:none;color:var(--blue-600)}

/* ---------- Consult ---------- */
.form-card{padding:36px;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow)}
.form-card>h2{margin:0 0 6px;font-size:22px}
.origin-note{display:flex;gap:10px;align-items:flex-start;padding:12px 16px;border-radius:12px;background:var(--soft);font-size:14px;color:var(--muted);margin:16px 0 28px;line-height:1.7}
.origin-note svg{flex:none;margin-top:3px;color:var(--blue-600)}
#origin{font-weight:600;color:var(--ink);font-family:var(--mono);font-size:13px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px 20px}
.form-grid label{display:block;font-size:14.5px;font-weight:600;color:var(--ink)}
.form-grid label:has([required]):after{content:none}
.form-grid input,.form-grid select,.form-grid textarea{display:block;width:100%;margin-top:8px;padding:12px 14px;border:1px solid var(--line-strong);border-radius:12px;background:#fff;font-size:15px;font-weight:400;color:var(--ink);transition:border-color .15s,box-shadow .15s}
.form-grid select{-webkit-appearance:none;appearance:none;padding-right:38px;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a6a82' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 14px center;cursor:pointer}
.form-grid input::placeholder,.form-grid textarea::placeholder{color:#9aa6b8}
.form-grid input:focus,.form-grid select:focus,.form-grid textarea:focus{outline:none;border-color:var(--blue-500);box-shadow:0 0 0 4px rgba(31,94,255,.12)}
.form-grid .full{grid-column:1/-1}
.form-grid textarea{resize:vertical;min-height:140px;line-height:1.7}
.req{color:#d03a52;margin-left:3px;font-weight:700}
.form-card .actions{margin-top:28px;align-items:center}
#form-status{color:var(--teal-500);font-weight:600;font-size:14px;min-height:1.8em;margin:14px 0 0}
#brief-panel{margin-top:28px;padding:28px;border-radius:var(--radius-lg);border:1px solid #cfe9e5;background:linear-gradient(180deg,var(--teal-50),#fff)}
#brief-panel h2{margin:0 0 14px;font-size:20px}
#brief{white-space:pre-wrap;margin:0;padding:22px;border-radius:12px;border:1px solid var(--line);background:#fff;font-family:var(--font);font-size:14.5px;line-height:1.85;overflow-wrap:anywhere;max-width:100%;color:var(--ink)}
#brief-panel .actions{margin-top:18px}
.aside-stack{display:grid;gap:18px;position:sticky;top:calc(var(--header-h) + 28px)}
.side-card{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;font-size:14.5px}
.side-card h3{margin:0 0 12px;font-size:16px;display:flex;align-items:center;gap:10px}
.side-card h3 .topic-ico{width:34px;height:34px;border-radius:10px}
.side-card h3 .topic-ico svg{width:18px;height:18px}
.checklist{list-style:none;margin:0;padding:0}
.checklist li{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px dashed var(--line);color:var(--text)}
.checklist li:last-child{border-bottom:0}
.checklist svg{flex:none;color:var(--teal-500)}
.side-card.contact{background:var(--navy-900);border:0;color:#b9c7de}
.side-card.contact h3{color:#fff}.side-card.contact .note{color:#9fb0cc}
.contact-qr{width:200px;max-width:100%;height:auto;border-radius:12px;background:#fff;padding:8px}
.article .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:0 0 28px;padding:0;list-style:none;counter-reset:s}
.article .steps li{margin:0;counter-increment:s;padding:18px 18px 16px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:14px;color:var(--muted);line-height:1.6}
.steps li:before{content:"0" counter(s);display:block;font-family:var(--mono);font-size:12px;font-weight:700;color:var(--blue-600);margin-bottom:6px}
.steps b{display:block;color:var(--ink);font-size:15px;margin-bottom:2px}

/* ---------- Evidence ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:48px 0 8px}
.proof-grid>div{position:relative;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
.proof-grid .topic-ico{margin-bottom:18px}
.proof-grid strong{display:block;font-size:20px;color:var(--ink);font-weight:700}
.proof-grid p{font-size:14.5px;color:var(--muted);margin:8px 0 18px}
.proof-grid .stage{position:absolute;top:28px;right:28px;font-family:var(--mono);font-size:12px;color:var(--subtle)}
.evidence-body{max-width:760px}

/* ---------- Internal ops ---------- */
.ops .article{max-width:920px}
.ops .wrap>.article-head{padding-top:48px}
.copy-status{font-size:13px;color:var(--muted)}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .layout{grid-template-columns:minmax(0,1fr) 240px;gap:40px}
  .hero-grid{gap:40px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px}
}
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;padding-top:72px;padding-bottom:96px}
  .chain{max-width:560px}
  .cards,.topics{grid-template-columns:repeat(2,1fr)}
  .layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:28px}
  .layout>.toc{position:static;order:-1;max-height:none;margin-bottom:28px}
  .layout>.aside-stack{position:static;margin-top:28px}
  .toc .side-cta{display:none}
  .aside-stack{grid-template-columns:1fr 1fr}
  .proof-grid{grid-template-columns:1fr}
  .banner{flex-direction:column;align-items:flex-start;padding:40px}
}
@media (max-width:760px){
  :root{--header-h:60px}
  .wrap{padding-left:20px;padding-right:20px}
  .js .menu-toggle{display:grid}
  .js .site-nav{position:absolute;left:0;right:0;top:var(--header-h);flex-direction:column;align-items:stretch;gap:2px;padding:12px 20px 20px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 20px 30px -20px rgba(13,27,46,.25);display:none}
  .js .menu-open .site-nav{display:flex}
  .js .site-nav a{padding:12px 14px;border-radius:10px;font-size:16px}
  .js .site-nav .nav-cta{margin:8px 0 0;text-align:center}
  .site-header:not(.menu-open) .bar{height:var(--header-h)}
  html:not(.js) .bar{flex-wrap:wrap;height:auto;padding-top:12px;padding-bottom:12px}
  html:not(.js) .site-nav{flex-wrap:wrap}
  .brand{font-size:16px}.brand small{font-size:9px}
  .section{padding:64px 0}
  .section-heading{display:block;margin-bottom:24px}
  .section-heading p{margin-top:10px}
  .hero-grid{padding-top:48px;padding-bottom:84px}
  .hero h1{font-size:min(34px,8.6vw)}
  .hero p.lead{font-size:16px}
  .hero .actions .button{flex:1 1 auto}
  .chain{padding:20px}
  .metrics{grid-template-columns:repeat(3,1fr)}
  .metrics>div{flex-direction:column;align-items:flex-start;gap:6px;padding:18px 16px}
  .metrics strong{font-size:30px}
  .metrics span{font-size:13px}
  .cards,.topics{grid-template-columns:1fr}
  .filters{top:calc(var(--header-h) + 6px);padding:10px;gap:8px}
  .search-box{flex:1 1 100%;min-width:0}
  .filters select{flex:1;min-width:0}
  .chips{flex-wrap:nowrap;overflow-x:auto;margin:0 -20px 22px;padding:0 20px 4px;scrollbar-width:none}
  .chips::-webkit-scrollbar{display:none}
  .chip{flex:none}
  .card{padding:20px}
  .banner{padding:30px 24px;border-radius:20px}
  .banner .button{width:100%}
  .site-footer{margin-top:64px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-top:48px;padding-bottom:28px}
  .footer-grid>div:first-child{grid-column:1/-1}
  .footer-bottom{flex-direction:column;gap:6px}
  .article-head{padding:28px 0 34px}
  .article-head h1{font-size:28px}
  .article-head>p{font-size:15.5px}
  .article{font-size:16.5px;line-height:1.9}
  .article h2{font-size:22px;margin-top:44px}
  .answer{padding:20px 20px 20px 22px}
  .article table{font-size:13.5px}
  .article th,.article td{padding:11px 12px;min-width:104px}
  .sources{padding:22px 18px}
  .callout{padding:24px 20px}
  .form-card{padding:24px 18px;border-radius:16px}
  .form-grid{grid-template-columns:1fr}
  .form-grid .full{grid-column:auto}
  .form-card .actions .button,.form-card .actions button{width:100%}
  .article .steps{grid-template-columns:1fr;gap:10px}
  .aside-stack{grid-template-columns:1fr}
  #brief-panel{padding:20px 16px}
  .proof-grid>div{padding:22px}
}
/* Component headings inside articles keep their own spacing on all screens */
.article .form-card>h2,.article #brief-panel h2,.article .sources h2{margin-top:0}
.article .callout h2{margin-top:8px}
.toc summary{justify-content:flex-start}
.toc summary:after{content:"";margin-left:auto;width:8px;height:8px;border-right:2px solid var(--subtle);border-bottom:2px solid var(--subtle);transform:rotate(45deg);transition:transform .2s}
.toc details[open] summary:after{transform:rotate(-135deg)}
.toc details:not([open]) summary{margin-bottom:0}
.proof-grid{margin-bottom:56px}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{animation:none!important;transition:none!important}
}
@media print{
  .site-header,.site-nav,.toc,.filters,.chips,.actions,.site-footer,.aside-stack,.progress{display:none!important}
  .wrap{padding:0;max-width:none}.layout{display:block}
  .hero,.banner,.callout.dark{background:#fff!important;color:#000}
  .hero h1,.banner h2{color:#000}
  .article-head h1{font-size:28px}.card{break-inside:avoid}body{background:#fff}
}