:root{font-family:Inter,Segoe UI,sans-serif;color:#12203a;background:#f3f6fb;line-height:1.5;--teal: #0f766e;--teal-dark: #0b5f58;--ink: #12203a;--muted: #5b6b82;--line: #e4ebf3;--card: #ffffff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:radial-gradient(circle at 12% -10%,#d9f3ee 0%,transparent 36%),radial-gradient(circle at 90% 0%,#dce7ff 0%,transparent 32%),#f3f6fb;color:var(--ink)}a{color:inherit;text-decoration:none}button,input,select{font:inherit}.app-root{min-height:100vh;display:flex;flex-direction:column}.app-shell{width:min(1120px,calc(100% - 32px));margin:0 auto;flex:1;padding-bottom:48px}.site-header{position:sticky;top:0;z-index:20;background:#ffffffe0;border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.site-header-inner,.site-footer-inner,.footer-bottom{width:min(1120px,calc(100% - 32px));margin:0 auto}.site-header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:#fff;font-weight:800;background:linear-gradient(135deg,#0d9488,#1d4ed8);box-shadow:0 8px 18px #0f766e40;flex-shrink:0;overflow:hidden}.brand-logo{padding:0;background:#fff;object-fit:cover}.brand strong{display:block;font-size:1.05rem}.brand em{display:block;font-style:normal;color:var(--muted);font-size:.75rem}.site-nav{display:flex;gap:8px;color:#334155;font-weight:600;font-size:.94rem}.site-nav a{padding:8px 12px;border-radius:999px}.site-nav a:hover,.site-nav a.active{background:#eef7f5;color:var(--teal-dark)}.hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding:48px 0 20px}.hero-kicker,.section-kicker{letter-spacing:.12em;text-transform:uppercase;color:var(--teal);font-size:.74rem;font-weight:700;margin:0 0 10px}.hero h1{margin:0 0 12px;font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.08;letter-spacing:-.04em;max-width:12ch}.hero-lead{max-width:42ch;color:var(--muted);font-size:1.05rem;margin:0 auto 28px}.category-jump{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;width:100%}.category-card{display:flex;flex-direction:column;align-items:flex-start;gap:10px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px;text-align:left;box-shadow:0 8px 20px #12203a0a;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.category-card:hover{transform:translateY(-3px);border-color:#cde5e1;box-shadow:0 16px 32px #12203a14}.category-card strong{font-size:1.02rem}.category-card span:last-child{color:var(--muted);font-size:.88rem}.form-actions{display:flex;gap:12px;flex-wrap:wrap}.btn{border:0;border-radius:999px;padding:.85rem 1.2rem;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:transform .16s ease,background .16s ease,box-shadow .16s ease}.btn:hover:not(:disabled){transform:translateY(-1px)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--teal);color:#fff;box-shadow:0 10px 20px #0f766e33}.btn-primary:hover:not(:disabled){background:var(--teal-dark)}.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}.tool-section{padding:32px 0 4px;scroll-margin-top:84px}.section-head h2{margin:0 0 6px;letter-spacing:-.02em}.section-head p,.workspace-head p{color:var(--muted)}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin-top:16px}.tool-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;display:flex;align-items:flex-start;gap:14px;box-shadow:0 8px 18px #12203a08;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.tool-card:hover{transform:translateY(-2px);border-color:#cde5e1;box-shadow:0 14px 28px #12203a12}.tool-card h3{margin:0 0 4px;font-size:1rem}.tool-card p{margin:0;color:var(--muted);font-size:.86rem}.tool-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;color:#fff;flex-shrink:0}.tool-icon.large{width:58px;height:58px;border-radius:18px}.tool-icon.small{width:36px;height:36px;border-radius:10px}.workspace{padding:20px 0 24px}.back-link{display:inline-flex;margin-bottom:18px;color:var(--teal-dark);font-weight:700}.back-link:before{content:"← "}.workspace-head{display:flex;gap:16px;align-items:flex-start;margin-bottom:18px}.workspace-head h1{margin:0 0 4px;letter-spacing:-.03em;font-size:clamp(1.6rem,3vw,2rem)}.workspace-form{display:flex;flex-direction:column;flex-wrap:wrap;gap:12px;background:#fff;border:1px solid var(--line);border-radius:28px;padding:20px;box-shadow:0 16px 40px #12203a0d}.dropzone{position:relative;display:grid;place-items:center;gap:6px;min-height:260px;border:2px dashed #5eead4;background:radial-gradient(circle at center,#fff,#f0fdfa 70%);border-radius:24px;color:#115e59;cursor:pointer;text-align:center;padding:28px;transition:background .16s ease,border-color .16s ease,min-height .16s ease}.dropzone.has-files{min-height:120px}.dropzone.is-dragging,.dropzone:hover{background:#ccfbf1;border-color:#0f766e}.dropzone.is-busy{opacity:.72;pointer-events:none}.dropzone-copy{display:grid;justify-items:center;gap:6px;pointer-events:none}.dropzone-glyph{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:var(--teal);color:#fff;font-size:1.4rem;font-weight:800;margin-bottom:6px}.dropzone input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer}.file-list{list-style:none;margin:0;padding:0;width:100%}.file-list li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.file-main{display:flex;align-items:center;gap:12px;min-width:0}.file-main strong,.file-list span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-main em{color:var(--muted);font-style:normal;font-size:.85rem}.file-thumb{width:44px;height:44px;border-radius:10px;object-fit:cover;background:#e2e8f0;flex-shrink:0}.file-thumb-pdf,.file-thumb-doc,.file-thumb-ppt{display:grid;place-items:center;font-size:.7rem;font-weight:800}.file-thumb-pdf{color:#b91c1c;background:#fee2e2}.file-thumb-doc{color:#1d4ed8;background:#dbeafe}.file-thumb-ppt{color:#c2410c;background:#ffedd5}.file-actions{display:flex;gap:6px;flex-shrink:0}.file-actions button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:6px 10px;cursor:pointer}.remove-btn{color:#b91c1c}.file-total{font-weight:700}.option-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;width:100%}.option-grid label{display:flex;flex-direction:column;gap:8px;font-weight:600}.option-grid input,.option-grid select{border:1px solid #cbd5e1;border-radius:12px;padding:10px 12px;background:#fff}.quality-field{grid-column:1 / -1}.quality-label,.quality-hints{display:flex;justify-content:space-between;align-items:center}.quality-hints{color:var(--muted);font-size:.78rem;font-weight:500}.quality-field input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:block;width:100%;height:24px;margin:0;padding:0;border:0;border-radius:0;background:transparent}.quality-field input[type=range]::-webkit-slider-runnable-track{width:100%;height:6px;border:0;border-radius:999px;background:linear-gradient(to right,var(--teal) 0,var(--teal) var(--quality, 64%),#ccfbf1 var(--quality, 64%),#ccfbf1 100%)}.quality-field input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;margin-top:-6px;border:0;border-radius:50%;background:var(--teal)}.quality-field input[type=range]::-moz-range-track{height:6px;border:0;border-radius:999px;background:#ccfbf1}.quality-field input[type=range]::-moz-range-progress{height:6px;border:0;border-radius:999px;background:var(--teal)}.quality-field input[type=range]::-moz-range-thumb{width:18px;height:18px;border:0;border-radius:50%;background:var(--teal)}.status-note{margin:0;width:100%;border-radius:14px;padding:12px 14px}.status-note.is-error{background:#fef2f2;color:#991b1b}.status-note.is-success{background:#ecfdf5;color:#166534}.status-note.is-loading,.status-note.is-info{background:#f0f9ff;color:#1e3a8a}.result-card{width:100%;display:flex;justify-content:space-between;gap:16px;align-items:center;background:#f8fffc;border:1px solid #bbf7d0;border-radius:18px;padding:16px 18px}.result-card h2{margin:0 0 6px;font-size:1.05rem;word-break:break-all}.result-card p{margin:0}.result-delta{display:inline-block;margin-left:8px;font-weight:700;color:var(--teal-dark)}.related{margin-top:28px}.related h2{margin:0 0 12px;font-size:1.1rem}.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px}.related-card{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;font-weight:700}.related-card:hover{border-color:#cde5e1}.empty-state{background:#fff;border:1px solid var(--line);border-radius:24px;padding:40px 24px;text-align:center}.site-footer{margin-top:auto;border-top:1px solid var(--line);background:#fff}.site-footer-inner{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(2,minmax(0,.8fr));gap:32px 40px;padding:36px 0 28px}.footer-brand p{margin:12px 0 0;max-width:42ch;color:var(--muted);font-size:.92rem;line-height:1.55}.footer-col{display:flex;flex-direction:column;align-items:flex-start;gap:8px}.footer-col h2{margin:0 0 4px;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.footer-col a{color:var(--ink);font-weight:600;font-size:.94rem}.footer-col a:hover{color:var(--teal-dark)}.footer-bottom{display:flex;justify-content:space-between;gap:12px;padding:14px 0 20px;border-top:1px solid var(--line);color:var(--muted);font-size:.82rem}.footer-bottom p{margin:0}.workspace-with-ads{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start}.workspace-with-ads.no-rail{grid-template-columns:minmax(0,1fr)}.workspace-rail{display:flex;flex-direction:column;gap:16px;position:sticky;top:88px}.ad-slot{margin:20px 0;padding:10px 12px;border:1px dashed var(--line);border-radius:16px;background:#f8fafc}.workspace-rail .ad-slot{margin:0}.ad-label{margin:0 0 8px;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:#94a3b8;font-weight:700}.legal-page{padding:20px 0 48px;max-width:72ch}.legal-page h1{margin:0 0 8px;letter-spacing:-.03em}.legal-updated{margin:0 0 16px;color:var(--muted);font-size:.92rem}.legal-page h2{margin:32px 0 10px;font-size:1.12rem;scroll-margin-top:84px}.legal-page p,.legal-page li{color:#334155}.legal-page ul{margin:0 0 16px;padding-left:1.2em}.legal-page li+li{margin-top:6px}.legal-page a{color:var(--teal-dark);font-weight:700}.legal-page code{font-size:.9em;background:#eef2f7;border-radius:6px;padding:1px 6px}.legal-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0 8px}.legal-points article{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:0 8px 24px #12203a0a}.legal-points strong{display:block;margin-bottom:6px;font-size:.92rem}.legal-points span{display:block;color:var(--muted);font-size:.88rem;line-height:1.45}.legal-toc{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 8px}.legal-toc a{background:#eef6f4;border-radius:999px;padding:6px 12px;font-size:.82rem;font-weight:700}@media (max-width: 860px){.category-jump{grid-template-columns:repeat(2,minmax(0,1fr))}.hero{padding:28px 0 16px}.legal-points,.workspace-with-ads{grid-template-columns:1fr}.workspace-rail{position:static}.site-footer-inner{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1 / -1}}@media (max-width: 720px){.site-header-inner,.workspace-head,.result-card,.file-list li{flex-direction:column;align-items:flex-start}.site-nav{width:100%;justify-content:flex-start;overflow-x:auto}.hero h1{max-width:none}.category-jump,.site-footer-inner,.footer-bottom{grid-template-columns:1fr}.footer-bottom{flex-direction:column}}