:root{--bg: #e4e7ec;--bg-deep: #d8dde6;--ink: #16181d;--muted: #5a6270;--faint: #8b93a0;--line: #d8dee6;--line-strong: #b7c0cc;--surface: #f6f7f8;--surface-2: #fffcf8;--accent: #1a6278;--accent-deep: #12485a;--accent-soft: #e7f2f6;--danger: #9b3b2e;--danger-soft: #f8ebe7;--ok: #12485a;--desk: #c5ced8;--paper: #fbfaf7;--shadow-float: 0 16px 40px rgba(22, 24, 29, .08);--shadow-paper: 0 22px 48px rgba(22, 24, 29, .14), 0 1px 0 rgba(255, 255, 255, .85) inset;--sans: "IBM Plex Sans", "PingFang SC", "Microsoft YaHei", sans-serif;--mono: "IBM Plex Mono", Consolas, "Cascadia Mono", monospace;--radius: 8px;--radius-sm: 6px;--ease: cubic-bezier(.22, 1, .36, 1);--title-h: 64px;--status-h: 40px;--ctrl-h: 38px}*{box-sizing:border-box}html,body{margin:0;height:100%;min-height:100%;min-height:100dvh}body{color:var(--ink);font-family:var(--sans);font-size:13.5px;letter-spacing:.01em;background:var(--bg);overflow:hidden;-webkit-font-smoothing:antialiased}.ambient{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;pointer-events:none;overflow:hidden}.desk-wash{position:absolute;top:-20%;right:-20%;bottom:-20%;left:-20%;background:radial-gradient(ellipse 70% 50% at 12% 0%,rgba(31,107,138,.09),transparent 55%),radial-gradient(ellipse 55% 45% at 100% 100%,rgba(20,24,31,.06),transparent 50%),linear-gradient(165deg,#eef1f5 0%,var(--bg) 42%,var(--bg-deep) 100%);animation:wash 32s var(--ease) infinite alternate}.grain{position:absolute;top:0;right:0;bottom:0;left:0;opacity:.028;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' 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var(--accent);background:#fbfaf7e6;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:50}.brand-lock{display:flex;align-items:center;gap:12px;flex:0 1 auto;min-width:0;margin:0;padding:4px 8px 4px 4px;border:0;border-radius:var(--radius-sm);background:transparent;color:inherit;text-align:left;cursor:pointer;transition:background .15s ease}.brand-lock:hover{background:#14181f0d}.brand-lock:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.mark{display:grid;place-items:center;width:42px;height:42px;border-radius:var(--radius-sm);background:var(--ink);color:#f2f5f8;font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.02em;flex:0 0 auto}html.demo-capture .enter,html.demo-capture .desk-wash,html.demo-capture .preview-sheet{animation:none!important}.brand-text{display:flex;flex-direction:column;gap:2px;min-width:0}.brand-text h1{margin:0;font-size:26px;font-weight:600;letter-spacing:-.03em;line-height:1}.product{margin:0;font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.14em;color:var(--faint);text-transform:uppercase}.brand-promo{margin:2px 0 0;font-size:12px;font-weight:600;color:var(--accent-deep);letter-spacing:.01em;max-width:28em}.titlebar-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:8px;margin-left:auto}.btn{font:inherit;font-weight:500;font-size:14px;border:1px solid transparent;border-radius:var(--radius-sm);height:var(--ctrl-h);padding:0 16px;display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;line-height:1;transition:background .18s var(--ease),border-color .18s var(--ease),color .18s 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12px;font-size:13px}.caption-btn:disabled{opacity:.4;pointer-events:none}.caption-lines{display:flex;flex-direction:column;gap:6px;width:100%}.caption-field{display:flex;align-items:center;gap:10px;min-height:34px;padding:0 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-2);color:var(--muted);font-size:12px;font-weight:500}.caption-field>span{flex:0 0 auto;font-size:11px;color:var(--faint);white-space:nowrap}.caption-field input{flex:1 1 auto;min-width:0;height:26px;margin:0;padding:0 2px;border:0;outline:none;background:transparent;font:inherit;font-size:13px;font-weight:500;color:var(--ink)}.caption-field input::placeholder{color:var(--faint);font-weight:400}.preview-sheet .listing-caption{width:100%}.preview-sheet 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src-line-flash{0%{background:#fff8d6;box-shadow:inset 0 0 0 2px #0b6e998c}35%{background:#fff3b0;box-shadow:inset 0 0 0 2px #0b6e9966}to{background:#fff;box-shadow:inset 0 0 0 0 transparent}}.preview-stage{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(255,252,248,.45),transparent 60%),linear-gradient(180deg,#d7dde6,#c5ced8);position:relative}.preview-stage:before{content:"DOC";position:absolute;top:12px;left:14px;z-index:1;font-family:var(--mono);font-size:10px;font-weight:500;letter-spacing:.18em;color:#14181f52}.preview-wrap{flex:1 1 auto;min-height:0;overflow:auto;overscroll-behavior:contain;padding:clamp(24px,3.5vh,40px) clamp(12px,2vw,28px) clamp(18px,2.5vh,32px);display:flex;justify-content:center;align-items:flex-start}.preview-wrap[data-mode=dark]{background:linear-gradient(165deg,#2a313a,#1e242c 55%,#171c22)}.preview-stage:has(.preview-wrap[data-mode=dark]):before{color:#ffffff47}.preview-expand{position:absolute;top:10px;right:12px;z-index:2;display:inline-flex;align-items:center;gap:6px;min-height:34px;padding:0 10px 0 8px;border:1px solid rgba(20,24,31,.14);border-radius:999px;background:#fffcf8eb;color:var(--ink);cursor:pointer;box-shadow:0 8px 22px #16181d1a;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),opacity .22s var(--ease),box-shadow .22s var(--ease)}.preview-expand-glyph{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:999px;background:#14181f0f}.preview-expand-label{font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1}.preview-expand:hover:not(:disabled){background:#fff;border-color:#14181f3d;transform:translateY(-1px);box-shadow:0 12px 28px #16181d24}.preview-expand:disabled{opacity:.38;cursor:not-allowed}.preview-stage:has(.preview-wrap[data-mode=dark]) .preview-expand{background:#1e242ce6;border-color:#ffffff24;color:#ffffffeb}.preview-stage:has(.preview-wrap[data-mode=dark]) .preview-expand-glyph{background:#ffffff14}.preview-expand-icon{display:block}.preview-sheet [data-src-line],.preview-lightbox-scroll [data-src-line]{cursor:pointer;border-radius:2px;transition:background-color .16s var(--ease),box-shadow .16s var(--ease)}.preview-sheet [data-src-line].is-src-hover,.preview-lightbox-scroll [data-src-line].is-src-hover{background-color:#1a62781a!important;box-shadow:inset 3px 0 #1a62788c}.preview-wrap[data-mode=dark] [data-src-line].is-src-hover,.preview-lightbox-scroll[data-mode=dark] [data-src-line].is-src-hover{background-color:#78bedc24!important;box-shadow:inset 3px 0 #8cd2ebb3}.jump-confirm{--jump-speed: .7s;border:0;padding:0;margin:auto;background:transparent;max-width:calc(100vw - 32px);opacity:0;transform:translateY(16px) scale(.98);transition:opacity var(--jump-speed) var(--ease),transform var(--jump-speed) var(--ease),overlay var(--jump-speed) allow-discrete,display var(--jump-speed) allow-discrete}.jump-confirm[open]{opacity:1;transform:translateY(0) scale(1)}@starting-style{.jump-confirm[open]{opacity:0;transform:translateY(16px) scale(.98)}}.jump-confirm::backdrop{background:#12161c00;transition:background .4s var(--ease),overlay .4s allow-discrete,display .4s allow-discrete}.jump-confirm[open]::backdrop{background:#12161c6b}.jump-confirm-card{width:min(380px,calc(100vw - 32px));padding:22px 22px 18px;border-radius:14px;background:#fffcf8;box-shadow:0 24px 56px #10141a47;border:1px solid rgba(20,24,31,.08)}.jump-confirm-title{margin:0 0 8px;font-size:16px;font-weight:650;color:var(--ink)}.jump-confirm-body{margin:0 0 18px;font-size:13px;line-height:1.5;color:var(--muted)}.jump-confirm-actions{display:flex;justify-content:flex-end;gap:8px}.preview-lightbox{--lightbox-speed: .9s;--lightbox-ease: var(--ease);width:min(920px,calc(100vw - 32px));max-width:calc(100vw - 32px);max-height:min(88vh,920px);margin:auto;padding:0;border:0;border-radius:14px;background:transparent;color:inherit;overflow:visible;box-shadow:none;opacity:0;transform:translateY(28px) scale(.985);transition:opacity var(--lightbox-speed) var(--lightbox-ease),transform var(--lightbox-speed) var(--lightbox-ease),overlay var(--lightbox-speed) allow-discrete,display var(--lightbox-speed) allow-discrete}.preview-lightbox[open]{opacity:1;transform:translateY(0) scale(1)}@starting-style{.preview-lightbox[open]{opacity:0;transform:translateY(28px) scale(.985)}}.preview-lightbox::backdrop{background:#12161c00;-webkit-backdrop-filter:blur(0);backdrop-filter:blur(0);transition:background .55s var(--lightbox-ease),backdrop-filter .55s var(--lightbox-ease),overlay .55s allow-discrete,display .55s allow-discrete}.preview-lightbox[open]::backdrop{background:#12161c7a;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}@starting-style{.preview-lightbox[open]::backdrop{background:#12161c00;-webkit-backdrop-filter:blur(0);backdrop-filter:blur(0)}}.preview-lightbox-chrome{position:relative;display:flex;flex-direction:column;max-height:min(88vh,920px);border-radius:14px;background:radial-gradient(ellipse 80% 50% at 50% 0%,rgba(255,252,248,.5),transparent 58%),linear-gradient(180deg,#d9e0e8,#c8d1db);box-shadow:0 28px 64px #10141a47,0 1px #ffffff8c inset;overflow:hidden}.preview-lightbox-close{position:absolute;top:12px;right:12px;z-index:3;width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(20,24,31,.12);border-radius:999px;background:#fffcf8e6;color:var(--ink);font-size:22px;line-height:1;cursor:pointer;box-shadow:0 8px 20px #16181d1a;transition:background .2s var(--ease),transform .2s var(--ease)}.preview-lightbox-close:hover{background:#fff;transform:translateY(-1px)}.preview-lightbox-scroll{flex:1 1 auto;min-height:0;overflow:auto;overscroll-behavior:contain;padding:clamp(28px,4vh,48px) clamp(16px,3vw,40px) clamp(24px,3vh,40px);display:flex;justify-content:center;align-items:flex-start}.preview-lightbox-scroll[data-mode=dark]{background:linear-gradient(165deg,#2a313a,#1e242c 55%,#171c22)}.preview-sheet--lightbox{width:min(100%,760px);margin:8px auto 20px;animation:none}@supports not (overlay: auto){.preview-lightbox[open]{animation:lightbox-bubble-in .9s var(--ease) both}}@keyframes lightbox-bubble-in{0%{opacity:0;transform:translateY(28px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}.preview-sheet{width:min(100%,680px);min-width:min(100%,280px);max-width:100%;flex:0 0 auto;align-self:flex-start;margin:18px auto 28px;padding:0;background:var(--paper);box-shadow:var(--shadow-paper);border-radius:2px;animation:paper-in 1.05s 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