:root{--ink:#102742;--muted:#617084;--paper:#f4f7f9;--card:#fff;--line:#dbe3e9;--accent:#f5c451;--accent2:#18a999;--shadow:0 12px 40px rgba(16,39,66,.08)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
    button,input{font:inherit}button{color:inherit}.shell{width:min(1120px,calc(100% - 32px));margin:auto}
    header{padding:28px 0 18px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-weight:800;letter-spacing:-.02em}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:var(--ink);color:var(--accent);font-size:24px}.brand small{display:block;color:var(--muted);font-size:12px;font-weight:650;letter-spacing:.04em;text-transform:uppercase}.count{color:var(--muted);font-size:14px}
    main{padding-bottom:72px}.intro{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch;margin:24px 0 28px}.intro-main,.workflow{border:1px solid var(--line);border-radius:26px;background:var(--card);box-shadow:var(--shadow)}.intro-main{padding:38px}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;color:#087f73;font-weight:750;font-size:13px;text-transform:uppercase;letter-spacing:.08em}.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent2)}h1{font-size:clamp(34px,5vw,58px);line-height:1.03;letter-spacing:-.055em;margin:0 0 18px;max-width:760px}.lead{margin:0;color:var(--muted);font-size:18px;max-width:690px}.workflow{padding:28px;background:var(--ink);color:white}.workflow h2{font-size:19px;margin:0 0 18px}.steps{list-style:none;padding:0;margin:0;display:grid;gap:15px}.steps li{display:grid;grid-template-columns:30px 1fr;gap:11px;align-items:start;color:#dbe6ef;font-size:14px}.steps span{display:grid;place-items:center;width:28px;height:28px;border-radius:9px;background:rgba(245,196,81,.14);color:var(--accent);font-weight:800}
    .controls{display:grid;grid-template-columns:1fr 220px;gap:12px;margin:0 0 24px}.field{position:relative}.field svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted)}input,select{width:100%;height:50px;border:1px solid var(--line);border-radius:14px;background:white;padding:0 16px;color:var(--ink);outline:none}input{padding-left:46px}input:focus,select:focus{border-color:var(--accent2);box-shadow:0 0 0 3px rgba(24,169,153,.13)}
    .section-head{display:flex;align-items:end;justify-content:space-between;margin:30px 0 14px}.section-head h2{font-size:22px;letter-spacing:-.025em;margin:0}.section-head p{margin:0;color:var(--muted);font-size:14px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{display:flex;flex-direction:column;min-height:300px;border:1px solid var(--line);border-radius:22px;background:white;overflow:hidden;box-shadow:0 4px 18px rgba(16,39,66,.04);transition:.2s ease}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.thumb{display:block;width:100%;aspect-ratio:4/3;border:0;padding:0;background:#dfe8ed center/cover no-repeat;cursor:pointer}.thumb:focus-visible{outline:3px solid var(--accent2);outline-offset:-3px}.card-body{display:flex;flex-direction:column;flex:1;padding:20px}.meta{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--muted);font-size:13px}.tag{padding:3px 9px;border-radius:999px;background:#e6f6f4;color:#087f73;font-weight:750}.card h3{font-size:21px;line-height:1.22;letter-spacing:-.025em;margin:15px 0 10px}.card p{margin:0 0 18px;color:var(--muted);font-size:14px}.open{margin-top:auto;border:0;background:transparent;padding:0;text-align:left;font-weight:780;cursor:pointer}.open:hover{text-decoration:underline}
    .empty{grid-column:1/-1;display:grid;place-items:center;text-align:center;min-height:330px;padding:44px;border:1px dashed #b8c6d0;border-radius:24px;background:rgba(255,255,255,.6)}.empty-icon{display:grid;place-items:center;width:64px;height:64px;margin:0 auto 16px;border-radius:20px;background:var(--ink);color:var(--accent);font-size:32px}.empty h3{font-size:24px;margin:0 0 8px}.empty p{max-width:510px;margin:0;color:var(--muted)}
    .article{display:none}.article.active{display:block}.archive.hidden{display:none}.back{border:0;background:transparent;padding:8px 0;margin:10px 0 22px;font-weight:780;cursor:pointer}.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:28px}.article-main,.article-aside{background:white;border:1px solid var(--line);border-radius:24px}.article-main{padding:clamp(24px,4vw,54px)}.article-main h1{font-size:clamp(32px,5vw,54px)}.answer{font-size:20px;color:#30465d;border-left:4px solid var(--accent);padding-left:20px}.prose h2{margin-top:34px;font-size:24px}.prose p{color:#30465d}.article-aside{padding:18px;height:max-content;position:sticky;top:18px}.article-aside img{width:100%;display:block;border-radius:16px}.sources{padding-left:20px}.sources a{color:#087f73}.summary{padding:22px;border-radius:18px;background:#fff7dc}.summary h2{margin-top:0}.footer-note{margin-top:32px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
    footer{border-top:1px solid var(--line);padding:26px 0;color:var(--muted);font-size:13px}
    @media(max-width:820px){.intro{grid-template-columns:1fr}.controls{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,1fr)}.article-wrap{grid-template-columns:1fr}.article-aside{position:static;order:-1}}
    @media(max-width:560px){.shell{width:min(100% - 22px,1120px)}header{padding-top:18px}.brand small,.count{display:none}.intro-main{padding:27px 22px}.workflow{padding:24px 22px}.grid{grid-template-columns:1fr}.section-head{align-items:start;gap:8px;flex-direction:column}.article-main{padding:24px 20px}}

.thumb img{width:100%;height:100%;object-fit:cover;display:block}