:root{--ink:#16202a;--muted:#667380;--line:#e9edf0;--accent:#0f8a7e;--accent-ink:#0b6b62;--tint:#e8f6f3;--soft:#f4f6f5;--card:#fff;--bg:#fbfaf7;--radius:18px;
--shadow:0 1px 2px rgba(22,32,42,.04),0 6px 20px rgba(22,32,42,.06);--shadow-hover:0 2px 4px rgba(22,32,42,.06),0 14px 34px rgba(22,32,42,.10);
--font:"Be Vietnam Pro","Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.75 var(--font);font-variant-numeric:tabular-nums}
a{color:var(--accent);text-underline-offset:3px}a:hover{color:var(--accent-ink)}img{max-width:100%;height:auto}
.wrap{max-width:1140px;margin:0 auto;padding:0 18px}
header.site{position:sticky;top:0;z-index:5;background:rgba(255,255,255,.9);backdrop-filter:saturate(1.4) blur(10px);box-shadow:0 1px 0 var(--line)}
header.site .wrap{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:10px 18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink);text-decoration:none}
.brand img{border-radius:9px}
nav.top{display:flex;gap:4px;flex-wrap:wrap}
nav.top a{text-decoration:none;color:var(--ink);font-size:15px;font-weight:600;padding:6px 12px;border-radius:999px}
nav.top a:hover{background:var(--tint);color:var(--accent-ink)}
main.wrap{padding-bottom:24px}
.crumbs{font-size:13px;color:var(--muted);margin:20px 0 0}.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--accent)}
h1{font-size:36px;line-height:1.22;font-weight:800;margin:10px 0 10px}
h2{font-size:24px;line-height:1.35;font-weight:700;margin:40px 0 10px;scroll-margin-top:84px}
h3{font-size:18px;font-weight:700;margin:22px 0 6px}
.meta{color:var(--muted);font-size:14px}.meta a{color:var(--muted)}
.wf-disclosure{font-size:13px;color:var(--muted);margin:6px 0 14px}
.wf-intro{font-size:19px;line-height:1.7;color:#2b3640}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:44px}
.article-grid article{max-width:760px}
aside.toc{display:none}
@media(min-width:1000px){.article-grid{grid-template-columns:minmax(0,760px) 270px;justify-content:space-between}
aside.toc{display:block;position:sticky;top:84px;align-self:start;margin-top:120px;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px;font-size:14px}
aside.toc ol{list-style:none;padding:0;margin:0}aside.toc li{margin:4px 0}
aside.toc a{display:block;color:var(--muted);text-decoration:none;padding:4px 8px;border-radius:8px;line-height:1.45}
aside.toc a:hover{background:var(--tint);color:var(--accent-ink)}
.toc-title{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);font-weight:800;margin:0 0 8px 8px}}
.wf-product-box{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;border-radius:24px;padding:20px;margin:26px 0;background:var(--card);box-shadow:var(--shadow)}
@media(min-width:700px){.wf-product-box{grid-template-columns:280px minmax(0,1fr);align-items:center}}
.wf-figure{margin:0}.wf-figure img{display:block;width:100%;border-radius:16px;background:var(--soft)}
.wf-figure figcaption{font-size:12px;color:var(--muted);margin-top:8px}
.wf-box-name{margin:0 0 12px;font-size:18px;line-height:1.45}
.wf-keyspecs{list-style:none;padding:0;margin:0 0 14px;display:grid;grid-template-columns:repeat(auto-fit,minmax(118px,1fr));gap:10px}
.wf-keyspecs li{background:var(--tint);border-radius:14px;padding:10px 12px}
.wf-keyspecs span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--accent-ink);font-weight:700}
.wf-keyspecs strong{font-size:19px;font-weight:800}
.wf-variant{background:#fff8e6;border-radius:12px;padding:10px 14px;font-size:15px}
.wf-price-note{font-size:14px;color:var(--muted)}
.wf-button{display:inline-block;background:linear-gradient(135deg,#0f8a7e,#0b6b62);color:#fff!important;padding:12px 22px;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 6px 16px rgba(15,138,126,.28)}
.wf-button:hover{filter:brightness(1.06)}
table.wf-specs{border-collapse:separate;border-spacing:0;width:100%;font-size:15px;background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
table.wf-specs th,table.wf-specs td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
table.wf-specs tr:last-child th,table.wf-specs tr:last-child td{border-bottom:0}
table.wf-specs th{width:38%;color:var(--muted);font-weight:600}
table.wf-specs td{font-weight:600}
.wf-article ul{padding-left:22px}.wf-article li{margin:5px 0}.wf-article li::marker{color:var(--accent)}
.wf-faq{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:6px 20px 12px}
.wf-faq h3{font-size:17px;margin:16px 0 4px}.wf-faq p{margin:0 0 8px;color:#2b3640}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:22px;margin:18px 0}
.card{display:flex;flex-direction:column;border-radius:var(--radius);overflow:hidden;background:var(--card);text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);color:var(--ink)}
.thumb{aspect-ratio:1200/630;background:var(--soft);overflow:hidden}.thumb img{display:block;width:100%;height:100%;object-fit:cover}
.card-body{padding:14px 16px 16px}.card-body h3{font-size:16px;line-height:1.45;margin:4px 0 10px}
.brand-tag{font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:var(--accent)}
ul.chips{list-style:none;padding:0;margin:0 0 8px;display:flex;flex-wrap:wrap;gap:6px}
ul.chips li{font-size:12px;font-weight:700;background:var(--tint);color:var(--accent-ink);border-radius:999px;padding:3px 10px}
.card .meta{font-size:13px;margin:0;line-height:1.55}
.pager{display:flex;gap:12px;margin:24px 0}.pager a{padding:8px 16px;border-radius:999px;background:var(--card);box-shadow:var(--shadow);text-decoration:none;font-weight:600}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags a{padding:7px 16px;border-radius:999px;background:var(--card);box-shadow:var(--shadow);text-decoration:none;font-size:14px;font-weight:700;color:var(--ink)}
.tags a:hover{background:var(--tint);color:var(--accent-ink)}
.hero{margin:26px 0 8px;padding:36px 32px;border-radius:28px;background:radial-gradient(120% 140% at 0% 0%,#d9f2ec 0%,#eef8f5 45%,#fbfaf7 100%)}
.hero h1{font-size:42px;margin:0 0 8px}.hero p{font-size:19px;color:#3d4a55;max-width:640px;margin:0}
.featured{display:grid;grid-template-columns:minmax(0,1fr);gap:0;border-radius:24px;overflow:hidden;background:var(--card);box-shadow:var(--shadow);text-decoration:none;color:var(--ink);margin:26px 0}
.featured:hover{box-shadow:var(--shadow-hover);color:var(--ink)}
@media(min-width:800px){.featured{grid-template-columns:1.25fr 1fr}}
.featured img{display:block;width:100%;height:100%;object-fit:contain;background:#13201f}
.featured .f-body{padding:24px 26px;display:flex;flex-direction:column;justify-content:center}
.featured .f-label{font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.featured h2{margin:6px 0 10px;font-size:26px}.featured p{color:var(--muted);margin:0 0 12px}
.section-title{display:flex;align-items:baseline;justify-content:space-between;margin:40px 0 4px}
.section-title h2{margin:0}.section-title a{font-weight:700;text-decoration:none;font-size:15px}
footer.site{margin-top:64px;padding:36px 0 18px;color:var(--muted);font-size:14px;background:#fff;box-shadow:0 -1px 0 var(--line)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}
footer.site a{display:block;color:var(--muted);text-decoration:none;margin:6px 0}footer.site a:hover{color:var(--accent)}
.foot-brand{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--ink);font-size:17px;margin:0 0 8px}.foot-brand img{border-radius:8px}
.foot-title{font-weight:800;color:var(--ink);text-transform:uppercase;font-size:12px;letter-spacing:.08em;margin:0 0 6px}
.foot-note{font-size:12px}.foot-copy{border-top:1px solid var(--line);margin-top:22px;padding-top:12px;font-size:13px}
@media(max-width:800px){.foot-grid{grid-template-columns:1fr 1fr}.foot-grid>div:first-child{grid-column:1/-1}}
.brand-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px;margin:18px 0}
.brand-card{border-radius:var(--radius);padding:18px 20px;text-decoration:none;color:var(--ink);display:flex;justify-content:space-between;align-items:center;background:var(--card);box-shadow:var(--shadow)}
.brand-card:hover{box-shadow:var(--shadow-hover);color:var(--accent-ink)}.brand-card span{color:var(--muted);font-size:14px}
@media(max-width:600px){h1{font-size:27px}.hero{padding:26px 20px}.hero h1{font-size:30px}body{font-size:16px}.wf-intro{font-size:17px}.featured h2{font-size:21px}}