:root{color-scheme:light;--bg:#f6f7fb;--panel:#fff;--text:#172033;--muted:#5d687b;--line:#d9deea;--accent:#2358d8;--accent-dark:#193f9d;--soft:#edf3ff;--error:#b42318;--success:#eaf7ee}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.65}
a{color:var(--accent)}
h1,h2,h3,p{margin-top:0}
h1{max-width:780px;margin-bottom:20px;font-size:clamp(2.25rem,6vw,4.5rem);line-height:1.02;letter-spacing:-.045em}
h2{margin-bottom:18px;font-size:clamp(1.75rem,4vw,2.6rem);line-height:1.15;letter-spacing:-.025em}
h3{margin-bottom:10px;font-size:1.08rem;line-height:1.3}
.container{width:min(1120px,calc(100% - 32px));margin-inline:auto}
.prose{max-width:760px}
.skip-link{position:fixed;z-index:20;top:8px;left:8px;transform:translateY(-150%);padding:10px 14px;border-radius:8px;background:#fff}
.skip-link:focus{transform:none}
.site-header{position:relative;border-bottom:1px solid var(--line);background:rgba(255,255,255,.94)}
.header-inner,.footer-inner{display:flex;min-height:68px;align-items:center;justify-content:space-between;gap:24px}
.logo{color:var(--text);font-size:1.15rem;font-weight:850;text-decoration:none;letter-spacing:-.02em}
nav{display:flex;flex-wrap:wrap;gap:6px 22px}
nav a{min-height:44px;display:inline-flex;align-items:center;color:#364158;font-weight:650;text-decoration:none}
nav a:hover{color:var(--accent)}
.hero{padding:88px 0 76px;background:var(--soft)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(260px,.65fr);gap:64px;align-items:center}
.lead{max-width:720px;margin-bottom:30px;color:#46536b;font-size:1.15rem}
.eyebrow{margin-bottom:12px;color:var(--accent);font-size:.78rem;font-weight:850;letter-spacing:.11em;text-transform:uppercase}
.hero-benefits{display:grid;gap:14px;margin:0;padding:24px;list-style:none;border:1px solid #cbd8f5;border-radius:12px;background:rgba(255,255,255,.7)}
.hero-benefits li{position:relative;padding-left:28px;font-weight:700}
.hero-benefits li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:900}
.button,button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:0 20px;border:1px solid var(--accent);border-radius:9px;background:var(--accent);color:#fff;font:inherit;font-weight:800;text-decoration:none;cursor:pointer}
.button:hover,button:hover{border-color:var(--accent-dark);background:var(--accent-dark)}
.button-secondary{background:#fff;color:var(--accent)}
button:disabled{cursor:wait;opacity:.7}
:focus-visible{outline:3px solid #f3a712;outline-offset:3px}
.content-section{padding:68px 0}
.tinted{border-block:1px solid #dfe6f4;background:var(--soft)}
.section-intro{margin-bottom:30px}
.section-intro p:last-child{color:var(--muted)}
.converter-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(320px,1.1fr);gap:28px;align-items:start}
.panel,.result,.card{border:1px solid var(--line);border-radius:12px;background:var(--panel)}
.panel{padding:28px}
label{display:block;margin-bottom:9px;font-weight:800}
.file-input{width:100%;min-height:56px;padding:12px;border:1px dashed #aab5ca;border-radius:9px;background:#fbfcff;font:inherit}
.file-input::file-selector-button{min-height:36px;margin-right:10px;border:0;border-radius:7px;background:#dfe8fb;color:#193f9d;font:inherit;font-weight:750;cursor:pointer}
.helptext{display:block;margin-top:8px;color:var(--muted);font-size:.9rem}
form button{width:100%;margin-top:20px}
.form-errors{margin-top:12px;padding:12px;border-radius:8px;background:#fff0ef;color:var(--error)}
.errorlist{margin:0;padding-left:20px}
.result{grid-column:1/-1;padding:28px;background:var(--success);border-color:#bbdcc4}
.output-name{overflow-wrap:anywhere;word-break:break-word}
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:24px 0}
.metric{padding:16px;border:1px solid #c7dfcd;border-radius:9px;background:rgba(255,255,255,.76)}
.metric dt{margin-bottom:5px;color:var(--muted);font-size:.86rem}
.metric dd{margin:0;overflow-wrap:anywhere;font-weight:850}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.card-grid{display:grid;gap:18px}
.card-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.card-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{padding:24px}
.card p{margin-bottom:0;color:var(--muted)}
.formats .card{border-color:#cbd8f5}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:0;padding:0;list-style:none;counter-reset:step}
.steps li{counter-increment:step;display:flex;gap:16px;padding:24px;border-top:3px solid var(--accent);background:#fff}
.steps li::before{content:counter(step);display:grid;flex:0 0 38px;height:38px;place-items:center;border-radius:50%;background:var(--accent);color:#fff;font-weight:900}
.steps p{margin:0;color:var(--muted)}
.faq-list{display:grid;gap:12px;margin-top:26px}
details{border:1px solid #cbd8f5;border-radius:10px;background:#fff}
summary{min-height:54px;padding:14px 48px 14px 18px;cursor:pointer;font-weight:800}
details p{padding:0 18px 18px;margin:0;color:var(--muted)}
.legal{min-height:65vh;background:#fff}
.legal h1{font-size:clamp(2.1rem,5vw,3.5rem)}
.legal h2{margin-top:34px;font-size:1.5rem}
.site-footer{border-top:1px solid var(--line);background:#fff}
.footer-inner{padding-block:18px}
.footer-inner p{margin:0;font-weight:750}
@media(max-width:900px){.hero-grid,.converter-grid{grid-template-columns:1fr}.card-grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.card-grid.three,.steps{grid-template-columns:1fr}.hero{padding:64px 0}.hero-benefits{max-width:620px}.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){body{line-height:1.55}.site-header{padding:10px 0}.header-inner,.footer-inner{align-items:flex-start;flex-direction:column;gap:4px}.header-inner nav{gap:0 14px}.header-inner nav a{font-size:.9rem}.hero{padding:44px 0}.hero-grid{gap:30px}.content-section{padding:42px 0}.card-grid.four,.metrics{grid-template-columns:1fr}.panel,.result,.card{padding:20px}.button,.actions .button{width:100%}h1{font-size:clamp(2.15rem,12vw,3.1rem);overflow-wrap:anywhere}.footer-inner{padding-block:24px}.footer-inner nav{flex-direction:column;gap:0}}