:root{--color-bg: #f6f8fc;--color-surface: #ffffff;--color-surface-alt: #f8fafc;--color-text: #0f172a;--color-muted: #64748b;--color-border: #e2e8f0;--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-primary-soft: #eff4ff;--color-success: #10b981;--color-success-soft: #ecfdf5;--radius-lg: 18px;--radius-md: 12px;--radius-sm: 8px;--shadow-card: 0 10px 30px rgba(15, 23, 42, .06);--shadow-hover: 0 12px 32px rgba(37, 99, 235, .12);--maxw: 1180px;--gap: 32px;--font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--hero-glow-a: rgba(37, 99, 235, .22);--hero-glow-b: rgba(16, 185, 129, .16);--hero-glow-c: rgba(124, 58, 237, .16);--hero-token-bg: rgba(255, 255, 255, .82);--hero-token-border: rgba(37, 99, 235, .2);--hero-ring: rgba(37, 99, 235, .16)}[data-theme=dark]{--color-bg: #0b1120;--color-surface: #131c31;--color-surface-alt: #1b2540;--color-text: #e2e8f0;--color-muted: #94a3b8;--color-border: #29344f;--color-primary: #3b82f6;--color-primary-dark: #2563eb;--color-primary-soft: #1a2440;--color-success: #34d399;--color-success-soft: #122e26;--shadow-card: 0 10px 30px rgba(0, 0, 0, .4);--shadow-hover: 0 12px 32px rgba(0, 0, 0, .5);--hero-glow-a: rgba(59, 130, 246, .34);--hero-glow-b: rgba(45, 212, 191, .18);--hero-glow-c: rgba(139, 92, 246, .22);--hero-token-bg: rgba(19, 28, 49, .82);--hero-token-border: rgba(96, 165, 250, .22);--hero-ring: rgba(96, 165, 250, .2)}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}h1,h2,h3{line-height:1.2;color:var(--color-text)}img{max-width:100%;display:block}:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px;border-radius:4px}.skip-link{position:absolute;left:-9999px;top:0;background:var(--color-primary);color:#fff;padding:10px 16px;z-index:100;border-radius:0 0 var(--radius-sm) 0}.skip-link:focus{left:0}.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:24px}.section-title{font-size:1.4rem;margin:0 0 18px}.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:50}.site-header__inner{display:flex;align-items:center;gap:24px;height:64px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--color-text)}.brand:hover{text-decoration:none}.brand__mark{width:36px;height:36px;border-radius:10px;background:var(--color-primary);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1rem}.brand__name b{color:var(--color-primary)}.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}.main-nav a,.nav-dropdown__summary{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:var(--radius-sm);color:var(--color-text);font-weight:600;font-size:.95rem;cursor:pointer}.main-nav a:hover,.nav-dropdown__summary:hover{background:var(--color-surface-alt);text-decoration:none}.nav-dropdown{position:relative}.nav-dropdown__summary{list-style:none}.nav-dropdown__summary::-webkit-details-marker{display:none}.nav-dropdown[open] .nav-dropdown__summary{background:var(--color-surface-alt)}.nav-dropdown__menu{position:absolute;top:calc(100% + 8px);right:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);padding:8px;width:460px;max-width:80vw;display:grid;grid-template-columns:1fr 1fr;gap:2px;z-index:60}.nav-dropdown__menu a{font-weight:500;font-size:.9rem;width:100%}.icon-btn{width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);display:grid;place-items:center;cursor:pointer}.icon-btn:hover{background:var(--color-surface-alt)}.hero{padding:36px 0 8px}.hero h1{font-size:clamp(2rem,4vw,3rem);margin:0 0 12px;letter-spacing:-.02em}.hero__subtitle{font-size:1.1rem;color:var(--color-muted);max-width:640px;margin:0 0 18px}.badges{display:flex;flex-wrap:wrap;gap:18px;padding:0;margin:0;list-style:none}.badge{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:.9rem;color:var(--color-text)}.badge svg{color:var(--color-success)}.hero--with-graphic{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,420px);align-items:center;gap:40px}.hero__content{min-width:0}.hero-graphic{justify-self:end;width:min(100%,420px);min-height:280px;position:relative}.layout{display:grid;grid-template-columns:1fr 320px;gap:var(--gap);padding:28px 0 56px}.layout__main,.layout__side{display:flex;flex-direction:column;gap:24px;min-width:0}.sticky-ad{position:sticky;top:84px}.converter__panel-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:8px}.converter__panel-head h2,.converter__panel-head .panel-label{font-size:1rem;margin:0;font-weight:700}.stats{color:var(--color-muted);font-size:.85rem;font-variant-numeric:tabular-nums}.stats span{color:var(--color-text);font-weight:600}.textarea{width:100%;min-height:150px;max-height:420px;resize:vertical;padding:14px 16px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-text);font-family:var(--font-sans);font-size:1rem;line-height:1.6}.textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-soft)}.textarea--mono{font-family:var(--font-mono);font-size:.95rem}.btn-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:20px 0;width:100%;min-width:0}.convert-btn{display:flex;align-items:center;gap:10px;min-width:0;width:100%;padding:12px 14px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-text);font-size:.9rem;font-weight:600;text-align:left;cursor:pointer;transition:border-color .15s,background .15s,box-shadow 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translateY(0)}@media(max-width:900px){.layout{display:flex;flex-direction:column;gap:24px}.layout__main,.layout__side{display:contents}.order-1{order:1}.order-2{order:2}.order-3{order:3}.order-4{order:4}.order-5{order:5}.order-6{order:6}.order-7{order:7}.order-8{order:8}.hero--with-graphic{grid-template-columns:1fr}.hero-graphic{display:none}.sticky-ad{position:static}.btn-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cards--4{grid-template-columns:repeat(2,1fr)}.faq-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.main-nav .hide-mobile{display:none}.nav-dropdown__menu{grid-template-columns:1fr}}@media(max-width:540px){.site-header__inner{gap:12px}.brand{font-size:1.02rem;gap:8px;min-width:0}.brand__mark{width:32px;height:32px}.main-nav{gap:4px}.card{padding:18px}.btn-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.convert-btn{padding:12px 10px;gap:8px;font-size:.84rem}.convert-btn__glyph{width:24px;height:24px;font-size:.72rem}.grid-cards--4,.grid-cards--2,.footer-grid{grid-template-columns:1fr}.example{grid-template-columns:1fr;text-align:left}.example__arrow{transform:rotate(90deg);width:fit-content}.actions .btn{flex:1 1 calc(50% - 6px);justify-content:center}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}