:root{--ink:#172536;--muted:#586b7d;--paper:#f5f8fb;--panel:#fff;--line:#d4e0eb;--accent:#117f83;--navy:#16344d;--shadow:0 20px 50px #142f4617}*{box-sizing:border-box}html{background:var(--paper);color:var(--ink)}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.55}button{font:inherit;cursor:pointer}.page-shell{width:min(1080px,100% - 30px);margin:0 auto;padding:46px 0 72px}.hero{max-width:820px;padding:28px 0 18px}.eyebrow{color:var(--accent);letter-spacing:.14em;text-transform:uppercase;margin:0 0 10px;font-size:.75rem;font-weight:850}h1,h2,h3{color:var(--navy);letter-spacing:-.025em;line-height:1.12}h1{max-width:800px;margin:0;font-size:clamp(2.35rem,7vw,4.35rem)}h2{margin:0 0 10px;font-size:clamp(1.45rem,3vw,2.15rem)}h3{margin:8px 0;font-size:1.08rem}p{color:var(--muted)}.hero-copy{max-width:700px;margin:18px 0 12px;font-size:1.13rem}.preview-note,.limitation{border-left:4px solid var(--accent);max-width:760px;color:var(--navy);background:#e8f6f4;padding:12px 15px}.fixture-panel,.content-section{border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow);border-radius:22px;margin-top:26px;padding:clamp(20px,4vw,38px)}.panel-heading,.section-heading{max-width:760px}.mode-switch{flex-wrap:wrap;gap:8px;margin:24px 0 20px;display:flex}.mode-button{border:1px solid var(--line);color:var(--muted);background:#fff;border-radius:999px;padding:10px 16px;font-weight:750}.mode-button.active{border-color:var(--navy);background:var(--navy);color:#fff}.fixture-card{background:#f8fffc;border:1px solid #b9d8d0;border-radius:18px;padding:clamp(18px,3vw,28px)}.result-heading{justify-content:space-between;align-items:start;gap:16px;display:flex}.status-pill{color:#14584e;white-space:nowrap;background:#d8eee8;border-radius:999px;padding:6px 10px;font-size:.77rem;font-weight:800;display:inline-flex}.fixture-summary{max-width:720px}.shape-display{background:var(--navy);color:#fff;border-radius:13px;flex-wrap:wrap;align-items:center;gap:8px;margin:22px 0;padding:17px;display:flex}.shape-part{letter-spacing:.08em;align-items:center;gap:8px;font-size:clamp(1rem,2.5vw,1.35rem);display:inline-flex}.shape-part b{color:#92bdc2}.fixture-meta{border-top:1px solid var(--line);grid-template-columns:repeat(3,minmax(0,1fr));gap:12px 16px;margin:18px 0 0;padding-top:16px;display:grid}.fixture-meta>div{min-width:0}dt{color:var(--muted);font-size:.8rem;font-weight:750}dd{color:var(--navy);overflow-wrap:anywhere;margin:4px 0 0;font-size:.92rem;font-weight:800}.explanation-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin-top:20px;display:grid}.explanation-grid article{border-top:3px solid #dfe9ef;padding-top:13px}.step-number{color:var(--accent);font-weight:900}.limitations ul{color:var(--muted)}.faq{box-shadow:none}.faq-list{gap:8px;margin-top:18px;display:grid}.faq-list details{border-top:1px solid var(--line);padding:13px 0}summary{color:var(--navy);cursor:pointer;font-weight:800}.footer{color:var(--muted);justify-content:space-between;gap:16px;margin-top:24px;font-size:.84rem;display:flex}button:focus-visible,summary:focus-visible{outline-offset:2px;outline:3px solid #f5b76d}@media (width<=760px){.page-shell{width:min(100% - 22px,1080px);padding-top:25px}.fixture-meta,.explanation-grid{grid-template-columns:1fr 1fr}}@media (width<=470px){.fixture-meta,.explanation-grid{grid-template-columns:1fr}.result-heading,.footer{flex-direction:column}}