:root{--ink:#17202a;--muted:#56616e;--paper:#f5f7f8;--white:#fff;--steel:#263544;--steel-2:#dce3e8;--red:#b4232d;--red-soft:#f9e9ea;--line:#cbd4da;--focus:#0068b5;--radius:18px;--shadow:0 18px 50px rgba(26,39,51,.1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.72 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:anywhere}
a{color:inherit;text-underline-offset:.22em}a:hover{color:var(--red)}img{max-width:100%;height:auto;display:block}button,select{font:inherit}.skip-link{position:fixed;left:12px;top:-80px;background:var(--ink);color:#fff;padding:10px 16px;z-index:30}.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px max(20px,calc((100vw - 1180px)/2));background:rgba(245,247,248,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.12em}.brand-mark{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;color:#fff;background:var(--red);font-size:13px;box-shadow:inset 0 0 0 5px rgba(255,255,255,.18)}
.action-paths{display:flex;gap:16px;flex-wrap:wrap;justify-content:flex-end}.action-paths a{text-decoration:none;font-weight:700;font-size:14px}.nav-toggle{display:none;border:1px solid var(--steel);background:var(--white);border-radius:999px;padding:8px 14px}
.page-shell{width:min(1180px,calc(100% - 40px));margin:0 auto;padding:28px 0 70px}.breadcrumb{display:flex;gap:8px;color:var(--muted);font-size:14px;margin-bottom:24px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:48px;min-height:520px;background:var(--white);border:1px solid var(--line);border-radius:28px;padding:clamp(28px,5vw,64px);box-shadow:var(--shadow);position:relative;overflow:hidden}.hero-grid:before{content:"";position:absolute;inset:0 auto 0 0;width:8px;background:var(--red)}
.eyebrow{margin:0 0 12px;color:var(--red);font-size:13px;font-weight:850;letter-spacing:.14em;text-transform:uppercase}.hero-copy h1{font-size:clamp(36px,6vw,76px);line-height:1.06;margin:0 0 22px;letter-spacing:-.045em}.lead{font-size:clamp(18px,2vw,23px);color:var(--steel);max-width:32em}.urgent-note{display:grid;gap:5px;border-left:4px solid var(--red);background:var(--red-soft);padding:16px 18px;margin-top:28px}.urgent-note strong{color:var(--red)}.hero-visual{margin:0}.hero-visual img{border-radius:22px;background:var(--steel)}.hero-visual figcaption{color:var(--muted);font-size:13px;margin-top:10px}
.response-strip{display:grid;grid-template-columns:repeat(4,1fr);margin:32px 0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white)}.response-strip div{display:flex;align-items:center;gap:12px;padding:20px;border-right:1px solid var(--line)}.response-strip div:last-child{border:0}.response-strip b{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--steel);color:#fff}
.section-block{margin-top:32px;padding:clamp(26px,4vw,48px);background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:24px}.section-heading p{color:var(--red);font-weight:800;letter-spacing:.1em}.section-heading h2,.section-block h2{font-size:clamp(25px,3vw,38px);line-height:1.2;margin:0 0 16px}.split{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:start}.steel-panel{background:var(--steel);color:#fff;padding:26px;border-radius:14px}.steel-panel h2{font-size:24px}.steel-panel ul{padding-left:1.2em}.steel-panel p,.steel-panel li{color:#edf2f5}
.action-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.action-card,.check-card{border:1px solid var(--line);border-radius:14px;padding:22px;background:linear-gradient(145deg,#fff,#f3f6f7)}.action-card h2,.check-card h2{font-size:21px}.card-code,.check-card span{color:var(--red);font-size:12px;font-weight:850;letter-spacing:.12em}.card-action{color:var(--muted);font-size:14px}
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.check-list{padding-left:1.35em}.check-list li{margin:.7em 0;padding-left:.3em}.directory-grid{columns:3;column-gap:36px;padding:0;list-style:none}.directory-grid li{break-inside:avoid;padding:7px 0;border-bottom:1px dotted var(--line)}.related-panel{margin-top:32px;border:2px solid var(--steel);border-radius:var(--radius);padding:24px;background:var(--steel-2)}.related-panel h2{margin-top:0}.related-panel ul{display:flex;gap:14px;flex-wrap:wrap;padding:0;list-style:none}.related-panel a{display:block;background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 14px;text-decoration:none;font-weight:700}
.local-tool{display:grid;gap:16px;max-width:720px}.local-tool label{display:grid;gap:6px;font-weight:700}.local-tool select{padding:10px;border:1px solid var(--line);border-radius:8px;background:#fff}.local-tool button{justify-self:start;border:0;border-radius:999px;background:var(--red);color:#fff;padding:11px 18px;font-weight:800;cursor:pointer}.local-tool output{display:block;border-left:4px solid var(--steel);background:var(--steel-2);padding:14px}
.site-footer{width:min(1180px,calc(100% - 40px));margin:0 auto 28px;padding:30px;background:var(--steel);color:#fff;border-radius:22px}.footer-callout{display:grid;grid-template-columns:.35fr 1.65fr;gap:24px;border-bottom:1px solid rgba(255,255,255,.25);padding-bottom:20px}.site-footer nav{display:flex;gap:16px;flex-wrap:wrap;padding:20px 0}.site-footer a{color:#fff}.fine{font-size:13px;color:#cad4db}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
@media(max-width:900px){.site-header{align-items:flex-start}.nav-toggle{display:block}.action-paths{display:none;position:absolute;left:20px;right:20px;top:76px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow)}.action-paths.is-open{display:grid;grid-template-columns:repeat(2,1fr)}.hero-grid,.split{grid-template-columns:1fr}.hero-grid{min-height:auto}.action-grid,.check-grid{grid-template-columns:repeat(2,1fr)}.response-strip{grid-template-columns:repeat(2,1fr)}.response-strip div:nth-child(2){border-right:0}.directory-grid{columns:2}}
@media(max-width:560px){.page-shell,.site-footer{width:min(100% - 24px,1180px)}.site-header{padding:10px 12px}.brand small{display:none}.brand-mark{width:40px;height:40px}.hero-grid{padding:28px 22px;border-radius:20px}.hero-copy h1{font-size:39px}.action-grid,.check-grid,.response-strip{grid-template-columns:1fr}.response-strip div{border-right:0;border-bottom:1px solid var(--line)}.response-strip div:last-child{border-bottom:0}.section-block{padding:24px 20px}.section-heading{display:block}.directory-grid{columns:1}.footer-callout{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}