:root{--ink:#142b45;--muted:#657587;--blue:#285be7;--sky:#eef5fc;--line:#dce5f0;--white:#fff;--radius:18px;font-family:'Avenir Next','Segoe UI',sans-serif;color:var(--ink);background:#f6f9fd;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #7598ff;outline-offset:4px}svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}[hidden]{display:none!important}.workspace{max-width:1240px;min-height:100vh;margin:auto;padding:0 64px;display:flex;flex-direction:column}header{height:112px;display:flex;align-items:center;gap:34px;border-bottom:1px solid var(--line)}.wordmark{font-size:36px;font-weight:800;letter-spacing:-3px;display:inline-flex;align-items:baseline;gap:6px}.brand-dot{height:7px;width:7px;border-radius:50%;background:var(--blue);display:inline-block}.header-label{font-size:13px;color:var(--muted)}.text-button{padding:9px 0;background:none;border:0;color:var(--muted);font-size:13px;display:inline-flex;align-items:center;justify-content:center;gap:9px}.text-button:hover{color:var(--blue)}header .text-button{margin-left:auto}.text-button svg{width:16px;height:16px}.main{max-width:900px;width:100%;margin:75px auto 80px}.heading-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:38px}h1{font-size:clamp(30px,4.2vw,48px);font-weight:650;line-height:1.12;letter-spacing:-1.8px;margin:0 0 15px}.intro{font-size:16px;line-height:1.6;color:var(--muted);margin:0}.quality-mark{width:100px;height:75px;position:relative;margin-right:20px;transform:rotate(-7deg)}.quality-mark span{display:grid;place-items:center;position:absolute;z-index:3;inset:0;background:#d5e5ff;border:2px solid #9cbaff;border-radius:14px;color:var(--blue);font-size:24px;box-shadow:0 6px 0 #e9f0fa}.quality-mark i{position:absolute;inset:0;border-radius:14px;border:1px solid #bbcbe2;background:#e9f0fa;transform:translate(12px,-8px);z-index:2}.quality-mark i:nth-of-type(2){transform:translate(24px,-16px);z-index:1;background:#f2f5fb}.quality-mark i:nth-of-type(3){display:none}.download-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 12px 44px #20406605}form{padding:32px}label{display:block;font-size:13px;font-weight:650;margin-bottom:10px}.url-field{display:flex;align-items:center;border:1px solid #bfccdc;border-radius:10px;height:62px;padding:0 16px;gap:14px;background:#fdfefe}.url-field:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px #285be710}.url-field>svg{color:#8798ab}.url-field input{background:transparent;outline:0;border:0;min-width:0;flex:1;font-size:17px;color:var(--ink);height:100%}.url-field input:focus-visible{outline:0}.url-field input::placeholder{color:#9aabba}.paste-button{border:1px solid var(--line);border-radius:6px;background:#f5f8fc;padding:6px 12px;color:var(--muted);font-size:12px}.paste-button:hover{background:var(--sky)}.form-bottom{display:flex;align-items:end;gap:24px;margin-top:26px}.format-field{flex:1;min-width:0}.format-field label{font-size:12px;color:var(--muted)}select{height:48px;width:100%;border:1px solid var(--line);background:#fff;border-radius:8px;padding:0 32px 0 13px;color:var(--ink);font-size:14px}.primary{display:inline-flex;align-items:center;justify-content:center;gap:22px;border:0;background:var(--blue);border-radius:9px;color:white;font-size:14px;font-weight:600;padding:15px 24px;min-height:49px;white-space:nowrap}.primary:hover{background:#194dd4}.primary:disabled{opacity:.65;cursor:wait}.primary svg{width:19px;height:19px}.quality-explanation{border-top:1px solid #e6edf6;background:#f8fbff;display:flex;align-items:flex-start;padding:19px 32px;gap:13px}.mini-check{background:#e3ecff;color:var(--blue);width:20px;height:20px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;font-size:12px;margin-top:2px}.quality-explanation p{font-size:12px;line-height:1.7;color:var(--muted);margin:0;max-width:650px}.quality-explanation strong{font-weight:600;color:#3e5874}.notes{display:flex;justify-content:space-between;gap:28px;margin:31px 8px 0}.notes>div{display:flex;align-items:start;gap:13px}.notes svg{color:#7c91a9;margin-top:3px;width:19px;height:19px}.notes p{font-size:12px;color:var(--muted);line-height:1.8;margin:0}.notes strong{font-weight:600;color:#4b6178}footer{margin-top:auto;border-top:1px solid var(--line);padding:24px 0 30px;display:flex;justify-content:space-between;font-size:11px;color:#7b8ea3;gap:24px}.error{color:#b63142;line-height:1.5;font-size:13px;margin:14px 0 0}.error:empty{display:none}.result{display:flex;align-items:start;gap:22px;padding:28px 30px;background:white;border:1px solid var(--line);border-radius:var(--radius);margin-top:24px}.result-icon{width:60px;height:66px;border-radius:10px;background:#e7efff;display:grid;place-items:center;color:var(--blue);flex-shrink:0}.result-body{min-width:0;flex:1}.source{font-size:11px;color:var(--muted);margin:0 0 7px}h2{font-size:17px;font-weight:600;line-height:1.4;margin:0 0 7px;overflow-wrap:anywhere}.video-meta{font-size:12px;color:var(--muted);margin:0 0 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#c8d7e7;border-radius:9px;overflow:hidden;padding:0 15px}.password-field input{width:100%;min-width:0;background:none;border:0;outline:0;font-size:17px;color:var(--ink)}.password-field .text-button{font-size:11px;padding-left:10px}.login-wrap .primary{width:100%;margin-top:18px;justify-content:space-between}.private-note{display:flex;align-items:center;justify-content:center;gap:7px;font-size:11px;color:#8092a7;margin-top:26px}.private-note svg{height:13px;width:13px}.login-art{height:62px;position:relative}.film-frame{width:86px;height:59px;border:2px solid #b2caff;background:#dfeaff;border-radius:10px;transform:rotate(-9deg);display:grid;place-items:center;position:relative;z-index:2;box-shadow:7px -6px 0 #f0f5ff,8px -7px 0 1px #cdddf2}.play-symbol{font-size:18px;color:var(--blue);transform:translateX(2px)}.art-shadow{position:absolute;width:72px;height:9px;border-radius:100%;background:#c5d6ec60;bottom:-6px;left:9px;filter:blur(5px)}@media(max-width:700px){.workspace{padding:0 24px}header{height:86px}.header-label{display:none}.main{margin:48px auto 52px}.heading-row{margin-bottom:27px}.quality-mark{width:63px;height:49px;margin-right:13px}.quality-mark span{font-size:18px;border-radius:9px}.quality-mark i{border-radius:9px;transform:translate(7px,-5px)}.quality-mark i:nth-of-type(2){transform:translate(14px,-10px)}h1{font-size:32px;letter-spacing:-1.2px}.intro{font-size:14px;max-width:260px}.heading-row>div:first-child{max-width:75%}form{padding:24px}.form-bottom{display:block}.primary{width:100%;margin-top:20px}.quality-explanation{padding:17px 24px}.notes{display:block;margin:26px 4px}.notes>div+div{margin-top:20px}footer{display:block;padding-bottom:24px}footer span{display:block}footer span+span{margin-top:8px}.result{padding:23px 20px;gap:14px}.result-icon{width:42px;height:48px}.login-wrap .primary{margin-top:18px}}@media(prefers-reduced-motion:no-preference){button,a{transition:background-color .15s,color .15s}}