:root{--bg: #f4f7f3;--bg-elev: #ffffff;--text: #112319;--muted: #385042;--accent: #006a52;--accent-2: #b24600;--danger: #8b1d1d;--ok: #0a6b3c;--warn: #7c5200;--border: #cad7cc;--focus: #002a8f;--shadow: 0 18px 40px rgba(0, 45, 33, .12);--font-main: "Space Grotesk", "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Consolas", monospace;color-scheme:light}:root[data-theme=dark]{--bg: #07170f;--bg-elev: #10271c;--text: #e9fff1;--muted: #aed8bd;--accent: #4ce1b4;--accent-2: #ffad64;--danger: #ff9696;--ok: #6cf6b6;--warn: #ffd17b;--border: #2b4a3a;--focus: #8db5ff;--shadow: 0 18px 40px rgba(0, 0, 0, .45);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;min-width:320px;font-size:16px;background:radial-gradient(circle at 10% 20%,rgba(40,120,90,.2),transparent 45%),radial-gradient(circle at 90% 0%,rgba(178,70,0,.18),transparent 42%),var(--bg);color:var(--text);font-family:var(--font-main);line-height:1.5}body{overflow-x:hidden}.skip-link{position:absolute;left:-9999px;top:8px;background:var(--accent);color:#fff;padding:10px 14px;z-index:10}.skip-link:focus-visible{left:8px}.page{width:min(100%,1100px);margin:0 auto;padding:14px;display:grid;gap:14px}.hero,.panel,.why,.footer{background:var(--bg-elev);border:1px solid var(--border);border-radius:14px;padding:14px;box-shadow:var(--shadow)}.hero{position:relative;padding-right:4.4rem}h1,h2,p,li,a,button,label,textarea,th,td,span{font-size:clamp(.9rem,1rem,1.05rem)}h1{font-size:clamp(1.8rem,6vw,3rem);margin:8px 0}h2{font-size:clamp(1.25rem,3vw,1.7rem);margin-top:0}.subtitle{color:var(--muted);max-width:65ch}.chip-row,.hero-actions,.actions,.links{display:flex;gap:8px;flex-wrap:wrap}.chip,.status-chip,.badge{border:1px solid var(--border);border-radius:18px;padding:9px 12px;background:#006a5214;min-height:44px;display:inline-flex;align-items:center;text-align:left}.category{background:#b246001a}.recommended{background:#006a5221}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid transparent;background:var(--accent);color:#fff;border-radius:10px;min-width:44px;min-height:44px;padding:10px 14px;cursor:pointer;font-weight:700}.btn.alt{background:transparent;color:var(--text);border-color:var(--border)}.theme-toggle{width:2.6rem;height:2.6rem;min-width:2.6rem;min-height:2.6rem;margin:.75rem;padding:0;border-radius:50%;border:1px solid var(--border);background:var(--bg);color:var(--text);box-shadow:var(--shadow);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:1.1rem}.theme-toggle:hover{background:color-mix(in srgb,var(--accent) 12%,var(--bg-elev));border-color:var(--accent)}a{color:var(--accent);text-decoration-thickness:2px}button:focus-visible,a:focus-visible,textarea:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.form{display:grid;gap:8px}textarea{width:100%;padding:10px;border-radius:10px;border:1px solid var(--border);background:var(--bg);color:var(--text);min-height:130px;font-family:var(--font-main)}.output{margin-top:10px;border:1px solid var(--border);border-radius:10px;padding:10px;background:color-mix(in srgb,var(--text) 4%,transparent);overflow-x:auto;word-break:break-word}.mono{font-family:var(--font-mono);white-space:pre-wrap;font-size:.9rem}.output:empty{display:none}.ok{border-color:var(--ok)}.warn{border-color:var(--warn)}.bad{border-color:var(--danger)}.warning{border-left:5px solid var(--accent-2);padding-left:10px}.small-note{color:var(--muted)}.table-wrap{overflow-x:auto;margin-top:10px}table{width:100%;border-collapse:collapse;min-width:700px}th,td{border:1px solid var(--border);padding:8px;text-align:left;vertical-align:top}caption{text-align:left;font-weight:700;margin-bottom:8px}.bars{display:grid;gap:8px;margin-top:12px}.bar-row{display:grid;gap:6px}.bar-title{font-weight:700}.bar-wrap{display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px}.bar{height:14px;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}.viz{overflow-x:auto}.lattice{width:100%;max-width:420px;border:1px solid var(--border);border-radius:10px}.lattice-bg{fill:color-mix(in srgb,var(--text) 3%,transparent)}.basis-line{stroke:var(--accent);stroke-width:3}.lattice-point{fill:color-mix(in srgb,var(--muted) 70%,transparent)}.lattice-point.short{fill:var(--accent-2)}.origin{fill:var(--accent)}.target{fill:var(--danger)}.svg-label{font-size:14px;fill:var(--text)}.footer{text-align:center;font-weight:600}h3{font-size:clamp(1.05rem,2.2vw,1.3rem);margin:14px 0 6px}.key-size-table{overflow-x:auto;margin:10px 0}.key-size-table table{min-width:400px}@media (min-width: 760px){.page{padding:20px;gap:16px}.panel{padding:18px}.bars{grid-template-columns:1fr 1fr}}@media (prefers-reduced-motion: no-preference){.panel,.hero,.why,.footer{animation:rise .32s ease-out both}@keyframes rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}}