:root{color-scheme:dark;--bg:#0a0b0d;--surface:#101215;--line:#292d32;--muted:#91989f;--text:#f3f5f6;--accent:#8dd7e6;--danger:#ff9b94;--max:1180px}*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;color:var(--text);background:var(--bg);font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","Microsoft YaHei",sans-serif;line-height:1.5}button,input{font:inherit}button{color:inherit}.skip-link{position:fixed;z-index:10;top:1rem;left:1rem;padding:.7rem 1rem;background:var(--text);color:var(--bg);transform:translateY(-200%)}.skip-link:focus{transform:none}.site-header{height:76px;max-width:var(--max);margin:auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;color:var(--text);text-decoration:none;font-size:1rem;font-weight:700;letter-spacing:.02em}.brand-mark{width:9px;height:9px;margin-right:10px;background:var(--accent)}.domain{font-weight:400;color:var(--muted)}.status{margin:0;color:var(--muted);font-size:.74rem;letter-spacing:.08em}.status span{display:inline-block;width:6px;height:6px;margin-right:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(141,215,230,.08)}main,footer{max-width:var(--max);margin:auto;padding-left:24px;padding-right:24px}.intro{padding:92px 0 76px;display:grid;grid-template-columns:2fr 1fr;gap:40px;align-items:end}.eyebrow{grid-column:1/-1;margin:0 0 32px;color:var(--accent);font:600 .68rem/1.2 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.16em}.intro h1{margin:0;font-size:clamp(3.3rem,8vw,7.4rem);line-height:.93;letter-spacing:-.065em;font-weight:560}.lede{max-width:31rem;margin:0 0 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strong+span{display:block;margin-top:4px;color:var(--muted);font-size:.9rem}.micro{margin-top:22px!important;color:#6f767d!important;font:500 .68rem/1.4 ui-monospace,monospace;letter-spacing:.08em;text-transform:uppercase}.file-copy #file-name{max-width:min(80vw,620px);overflow-wrap:anywhere;font-size:1.4rem}.file-copy .text-button{pointer-events:auto}.text-button{border:0;border-bottom:1px solid currentColor;padding:4px 0;margin-top:24px;background:none;color:var(--muted);cursor:pointer;font-size:.82rem}.text-button:hover{color:var(--text)}.field-error{min-height:1.2em;margin:8px 0;color:var(--danger);font-size:.8rem}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;padding:52px 0;border-bottom:1px solid var(--line)}fieldset{min-width:0;margin:0;padding:0;border:0}legend,.password-field>span:first-child{display:block;margin-bottom:18px;color:var(--muted);font:600 .7rem/1.3 ui-monospace,monospace;letter-spacing:.12em;text-transform:uppercase}legend span,.password-field b{margin-right:12px;color:var(--accent)}.segmented{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line)}.segmented label{position:relative}.segmented label:not(:last-child){border-right:1px solid var(--line)}.segmented input{position:absolute;opacity:0}.segmented span{display:grid;min-height:48px;place-items:center;color:var(--muted);cursor:pointer;font-size:.84rem}.segmented input:checked+span{color:var(--bg);background:var(--text)}.segmented input:focus-visible+span{outline:2px solid var(--accent);outline-offset:-3px}.password-field{display:block;padding-top:44px}.password-field b{font-weight:600}.input-wrap{display:flex;border-bottom:1px solid #5d646b}.input-wrap:focus-within{border-color:var(--accent)}.input-wrap input{width:100%;padding:14px 0;border:0;outline:0;background:transparent;color:var(--text);font-size:1rem}.password-input.is-masked{-webkit-text-security:disc}.input-wrap button{border:0;background:none;color:var(--muted);cursor:pointer}.password-field small{display:block;margin-top:10px;color:#6f767d;font-size:.73rem}.submit{width:100%;margin:38px 0 92px;padding:21px 24px;border:0;background:var(--text);color:var(--bg);display:flex;justify-content:space-between;cursor:pointer;font-weight:650;transition:background .2s}.submit:hover{background:var(--accent)}.submit:disabled{cursor:not-allowed;opacity:.45}.result-panel{margin:0 0 92px;padding:42px;border:1px solid var(--line);background:var(--surface)}.result-heading{display:flex;justify-content:space-between;align-items:start;gap:24px}.result-heading .eyebrow,.result-panel>.eyebrow{margin:7px 0 0}.result-panel h2{margin:0;font-size:clamp(2rem,4vw,3.8rem);letter-spacing:-.04em}.progress-file,.result-note{color:var(--muted);overflow-wrap:anywhere}.progress-meta{display:flex;justify-content:space-between;margin-top:44px;font:600 .72rem 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p{margin:0;max-width:42rem}.footer-index{display:block;margin-bottom:12px;color:var(--accent);font:600 .67rem monospace;letter-spacing:.14em}footer strong{color:var(--text);font-size:.95rem}.copyright{grid-column:1/-1;margin-top:48px!important;color:#5f666c}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}[hidden]{display:none!important}@supports not (-webkit-text-security:disc){.password-input.is-masked{color:transparent;caret-color:var(--text)}.password-input.is-masked::placeholder{color:#757b82}}@media(max-width:760px){.site-header{height:64px;padding:0 18px}.status{font-size:0}.status span{margin:0}.domain{display:none}main,footer{padding-left:18px;padding-right:18px}.intro{padding:64px 0 54px;display:block}.eyebrow{margin-bottom:25px}.intro h1{font-size:clamp(3.2rem,14.5vw,4.2rem)}.lede{margin-top:36px}.drop-zone{min-height:238px}.settings-grid{grid-template-columns:1fr;gap:38px;padding:40px 0}.segmented span{min-height:46px;font-size:.78rem}.submit{margin-bottom:64px}.result-panel{margin-bottom:64px;padding:25px 18px}.result-heading{display:block}.result-panel h2{margin-top:18px}.link-row{display:block}.link-row input{width:100%}.link-row button{width:100%;padding:14px;margin-top:8px}footer{grid-template-columns:1fr;gap:24px}.copyright{grid-column:auto;margin-top:28px!important}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}