.hsz :root{--st-ink:#101d2e;--st-navy:#12365c;--st-navy-deep:#0b2540;--st-accent:#d98a2b;--st-paper:#ffffff;--st-mist:#f3f6fa;--st-line:#dbe3ec;--st-muted:#5a6b80;--lv1:#1d6fb8;--lv2:#12907e;--lv3:#c07c14;--lv4:#a2452f;--lv5:#6b4fa1;--lv6:#4a5a6e;--mono:ui-monospace,"SF Mono","Cascadia Mono","Roboto Mono",Consolas,monospace;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}.hsz *{box-sizing:border-box;margin:0;padding:0}.hsz{font-family:var(--sans);color:var(--st-ink);background:var(--st-paper);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased}.hsz .wrap{max-width:860px;margin:0 auto;padding:0 22px}.hsz a{color:var(--st-navy);text-decoration-thickness:1px;text-underline-offset:3px}.hsz a:hover{color:var(--st-accent)}.hsz a:focus-visible,.hsz button:focus-visible,.hsz input:focus-visible,.hsz summary:focus-visible{outline:3px solid var(--st-accent);outline-offset:2px;border-radius:4px}.hsz h1{font-size:clamp(1.9rem,4.5vw,2.7rem);line-height:1.15;letter-spacing:-.02em;color:var(--st-navy);font-weight:800}.hsz h2{font-size:clamp(1.35rem,3vw,1.7rem);line-height:1.25;letter-spacing:-.01em;color:var(--st-navy);font-weight:750;margin:0 0 .7em}.hsz h3{font-size:1.12rem;color:var(--st-navy);font-weight:700;margin:0 0 .45em}.hsz p{margin:0 0 1em}.hsz section{padding:52px 0}.hsz section.alt{background:var(--st-mist)}.hsz .eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--st-accent);margin-bottom:14px}.hsz .lead{font-size:1.12rem;color:var(--st-ink)}.hsz .muted{color:var(--st-muted)}.hsz .small{font-size:.85rem}.hsz .hero{background:linear-gradient(160deg,var(--st-navy-deep) 0%,var(--st-navy) 100%);color:#fff;padding:64px 0 56px}.hsz .hero h1{color:#fff}.hsz .hero .lead{color:#d7e2ef;max-width:44em;margin-top:16px}.hsz .hero .eyebrow{color:#f0b45e}.hsz .defbox{margin-top:26px;background:#ffffff12;border:1px solid rgba(255,255,255,.18);border-left:4px solid var(--st-accent);border-radius:10px;padding:18px 20px;max-width:46em}.hsz .defbox p{margin:0;color:#eef4fa;font-size:1.02rem}.hsz .defbox strong{color:#fff}.hsz .decoder{background:var(--st-paper);border:1px solid var(--st-line);border-radius:16px;box-shadow:0 18px 44px #0b25401f;padding:28px 26px;margin-top:34px;position:relative}.hsz .decoder h2{margin-bottom:4px}.hsz .decoder .sub{color:var(--st-muted);margin-bottom:18px}.hsz .dec-inputrow{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.hsz #decInput{flex:1 1 260px;font-family:var(--mono);font-size:1.35rem;letter-spacing:.08em;padding:13px 16px;border:2px solid var(--st-line);border-radius:10px;color:var(--st-ink);min-width:0}.hsz #decInput:focus{border-color:var(--st-navy)}.hsz .chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.hsz .chip{font-size:.82rem;font-weight:600;border:1px solid var(--st-line);background:var(--st-mist);color:var(--st-navy);border-radius:999px;padding:6px 13px;cursor:pointer;font-family:var(--sans)}.hsz .chip:hover{border-color:var(--st-accent);color:var(--st-accent)}.hsz .dec-display{margin-top:22px;padding:22px 18px;background:var(--st-mist);border-radius:12px;text-align:center;overflow-x:auto}.hsz .dec-digits{font-family:var(--mono);font-size:clamp(1.7rem,6vw,3rem);font-weight:700;letter-spacing:.06em;white-space:nowrap}.hsz .dec-digits .seg{padding:2px 4px;border-radius:6px;border-bottom:5px solid transparent}.hsz .seg.s1{color:var(--lv1);border-color:var(--lv1)}.hsz .seg.s2{color:var(--lv2);border-color:var(--lv2)}.hsz .seg.s3{color:var(--lv3);border-color:var(--lv3)}.hsz .seg.s4{color:var(--lv4);border-color:var(--lv4)}.hsz .seg.s5{color:var(--lv5);border-color:var(--lv5)}.hsz .seg.s6{color:var(--lv6);border-color:var(--lv6)}.hsz .dec-placeholder{color:var(--st-muted);font-size:.98rem;padding:8px 0}.hsz .dec-level{margin-top:14px;font-weight:700;color:var(--st-navy)}.hsz .dec-legend{margin-top:18px;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:10px;text-align:left}.hsz .leg{border:1px solid var(--st-line);border-radius:10px;padding:11px 13px;background:#fff}.hsz .leg .tag{display:inline-block;font-family:var(--mono);font-weight:700;font-size:.8rem;color:#fff;border-radius:5px;padding:2px 8px;margin-bottom:6px}.hsz .leg.l1 .tag{background:var(--lv1)}.hsz .leg.l2 .tag{background:var(--lv2)}.hsz .leg.l3 .tag{background:var(--lv3)}.hsz .leg.l4 .tag{background:var(--lv4)}.hsz .leg.l5 .tag{background:var(--lv5)}.hsz .leg.l6 .tag{background:var(--lv6)}.hsz .leg b{display:block;font-size:.92rem;color:var(--st-ink)}.hsz .leg span{font-size:.85rem;color:var(--st-muted)}.hsz .dec-chapter{margin-top:16px;border-left:4px solid var(--lv1);background:#fff;border-radius:8px;padding:12px 16px;text-align:left;border-top:1px solid var(--st-line);border-right:1px solid var(--st-line);border-bottom:1px solid var(--st-line)}.hsz .dec-links{margin-top:18px;display:flex;gap:10px;flex-wrap:wrap}.hsz .btn{display:inline-block;font-weight:700;border-radius:9px;padding:11px 18px;text-decoration:none;font-size:.95rem;border:2px solid transparent;cursor:pointer}.hsz .btn-primary{background:var(--st-accent);color:#fff}.hsz .btn-primary:hover{background:#c8181c;color:#fff}.hsz .btn-ghost{border-color:var(--st-navy);color:var(--st-navy);background:transparent}.hsz .btn-ghost:hover{border-color:var(--st-accent);color:var(--st-accent)}.hsz .dec-note{margin-top:14px;font-size:.83rem;color:var(--st-muted)}.hsz .tbl{width:100%;border-collapse:collapse;margin:18px 0 6px;font-size:.95rem;background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 10px #0b25400f}.hsz .tbl th{background:var(--st-navy);color:#fff;text-align:left;padding:12px 14px;font-weight:700}.hsz .tbl td{padding:12px 14px;border-top:1px solid var(--st-line);vertical-align:top}.hsz .tbl tr:nth-child(2n) td{background:var(--st-mist)}.hsz .tbl .mono{font-family:var(--mono);font-weight:700;white-space:nowrap}.hsz .tblwrap{overflow-x:auto}.hsz .callout{border-radius:12px;padding:18px 20px;margin:22px 0;border:1px solid var(--st-line);border-left:5px solid var(--st-accent);background:#fff}.hsz .callout.warn{border-left-color:#b3402e;background:#fdf6f4}.hsz .callout h3{margin-bottom:6px}.hsz .callout p:last-child{margin-bottom:0}.hsz .steps{counter-reset:st;list-style:none;margin:20px 0}.hsz .steps li{counter-increment:st;position:relative;padding:0 0 22px 58px}.hsz .steps li:before{content:counter(st,decimal-leading-zero);position:absolute;left:0;top:2px;font-family:var(--mono);font-weight:700;font-size:.95rem;color:#fff;background:var(--st-navy);border-radius:9px;width:42px;height:42px;display:flex;align-items:center;justify-content:center}.hsz .steps li:not(:last-child):after{content:"";position:absolute;left:20px;top:50px;bottom:6px;width:2px;background:var(--st-line)}.hsz .steps b{color:var(--st-navy)}.hsz .mistakes{list-style:none;margin:18px 0}.hsz .mistakes li{background:#fff;border:1px solid var(--st-line);border-radius:10px;padding:14px 16px 14px 46px;margin-bottom:10px;position:relative}.hsz .mistakes li:before{content:"✕";position:absolute;left:16px;top:14px;color:#b3402e;font-weight:800}.hsz .mistakes b{color:var(--st-navy)}.hsz .faq details{border:1px solid var(--st-line);border-radius:10px;background:#fff;margin-bottom:10px}.hsz .faq summary{cursor:pointer;font-weight:700;color:var(--st-navy);padding:15px 44px 15px 18px;list-style:none;position:relative}.hsz .faq summary::-webkit-details-marker{display:none}.hsz .faq summary:after{content:"+";position:absolute;right:18px;top:12px;font-size:1.4rem;color:var(--st-accent);font-weight:600}.hsz .faq details[open] summary:after{content:"–"}.hsz .faq .a{padding:0 18px 16px;color:var(--st-ink)}.hsz .faq .a p{margin-bottom:.6em}.hsz .faq .a p:last-child{margin-bottom:0}.hsz .cta{background:linear-gradient(160deg,var(--st-navy-deep),var(--st-navy));color:#fff;border-radius:16px;padding:34px 30px}.hsz .cta h2{color:#fff}.hsz .cta p{color:#d7e2ef;max-width:46em}.hsz .cta ul{margin:14px 0 20px 20px;color:#eef4fa}.hsz .cta li{margin-bottom:6px}.hsz .checks{list-style:none;margin:14px 0 20px}.hsz .checks li{padding-left:30px;position:relative;margin-bottom:8px}.hsz .checks li:before{content:"✓";position:absolute;left:0;color:var(--st-accent);font-weight:800}.hsz footer.pagefoot{padding:26px 0 40px;border-top:1px solid var(--st-line)}.hsz{--st-ink:#1d1d1f;--st-navy:#1d1d1f;--st-navy-deep:#1d1d1f;--st-accent:#ed2024;--st-paper:#fff;--st-mist:#f6f7f9;--st-line:rgba(0,0,0,.1);--st-muted:#6e6e73;--lv1:#1d6fb8;--lv2:#12907e;--lv3:#c07c14;--lv4:#a2452f;--lv5:#6b4fa1;--lv6:#4a5a6e;--mono:ui-monospace,"SF Mono","Cascadia Mono","Roboto Mono",Consolas,monospace;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}.hsz .hsf-results{margin-top:16px;display:grid;gap:10px;text-align:left}.hsz .hsf-item{border:1px solid var(--st-line);border-radius:12px;padding:13px 16px;display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;background:#fff}.hsz .hsf-name{font-weight:600;color:var(--st-ink);flex:1 1 200px;min-width:0}.hsz .hsf-code{font-family:var(--mono);font-weight:700;font-size:1.02rem;background:var(--st-mist);border:1px solid var(--st-line);border-radius:8px;padding:5px 10px;white-space:nowrap}.hsz .hsf-actions{display:flex;gap:8px;flex-wrap:wrap}.hsz .hsf-btn{font:inherit;font-size:.78rem;font-weight:600;border:1px solid var(--st-line);background:#fff;border-radius:999px;padding:6px 12px;cursor:pointer;color:var(--st-ink)}.hsz .hsf-btn:hover{border-color:#ed2024;color:#ed2024}.hsz .hsf-kap{flex-basis:100%;color:var(--st-muted);font-size:.84rem}.hsz .hsf-empty{border:1px dashed var(--st-line);border-radius:12px;padding:16px;color:var(--st-muted);text-align:left}.hsz .hsf-note{margin-top:10px;color:var(--st-muted);font-size:.78rem;text-align:left}.hsz .cta-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}@media (max-width:640px){.hsz section{padding:40px 0}.hsz .hero{padding:46px 0 34px}.hsz .decoder{padding:20px 16px}.hsz .cta{padding:26px 20px}.hsz .tblwrap{-webkit-overflow-scrolling:touch}.hsz .tbl{font-size:.86rem}.hsz .tbl th,.hsz .tbl td{padding:9px 10px}.hsz .steps li{padding-left:52px}}@media (max-width:480px){.hsz .cta-btns{flex-direction:column;align-items:stretch}.hsz .cta-btns .btn{width:100%;text-align:center}}.hsz .hero{background:linear-gradient(180deg,#f6f7f9,#fff);color:var(--st-ink);border-bottom:1px solid rgba(0,0,0,.06);padding:64px 0 48px}.hsz .hero h1{color:var(--st-ink);font-weight:600;letter-spacing:-.02em}.hsz .hero .lead{color:#6e6e73}.hsz .hero .eyebrow{color:#ed2024}.hsz .eyebrow{color:#ed2024;letter-spacing:1.6px;font-size:13px}.hsz .defbox{background:#fff;border:1px solid rgba(0,0,0,.1);border-left:4px solid #ed2024;border-radius:12px}.hsz .defbox p,.hsz .defbox strong{color:#1d1d1f}.hsz h2,.hsz h3{font-weight:600}.hsz a{color:#1d6fd0}.hsz a:hover{color:#ed2024}