:root{color-scheme:light;--bg: #F2F5F8;--bg-glow: rgba(120, 170, 230, .14);--surface: #FFFFFF;--surface-2: #F7F9FB;--surface-3: #EAEFF4;--line: #E1E8EF;--line-strong: #C9D4DF;--ink: #0E1726;--ink-2: #334155;--ink-3: #5C6B7F;--ink-4: #93A1B1;--brand: #BBDDFF;--accent: #BBDDFF;--accent-ink: #0A1424;--accent-strong: #2E5F9E;--accent-soft: rgba(187, 221, 255, .42);--accent-line: rgba(52, 110, 180, .5);--code-bg: #0B1220;--code-fg: #E4EBF3;--code-dim: #90A4BD;--code-tag: #A8CBFF;--shadow-1: 0 1px 2px rgba(15, 23, 42, .05), 0 1px 3px rgba(15, 23, 42, .06);--shadow-2: 0 12px 32px rgba(15, 23, 42, .12);--shadow-3: 0 6px 18px rgba(15, 23, 42, .1);--r-lg: 14px;--r-md: 10px;--r-sm: 8px;--ease: cubic-bezier(.22, .61, .36, 1);--t: .18s}:root[data-theme=dark]{color-scheme:dark;--bg: #070B10;--bg-glow: rgba(120, 170, 230, .12);--surface: #101823;--surface-2: #151F2C;--surface-3: #1C2836;--line: #212D3D;--line-strong: #304156;--ink: #E6EDF3;--ink-2: #B9C6D5;--ink-3: #8A9BB0;--ink-4: #5B6B7E;--brand: #BBDDFF;--accent: #BBDDFF;--accent-ink: #0A1424;--accent-strong: #BBDDFF;--accent-soft: rgba(187, 221, 255, .16);--accent-line: rgba(187, 221, 255, .46);--code-bg: #04070C;--code-fg: #E6EDF3;--code-dim: #90A4BD;--code-tag: #A8CBFF;--shadow-1: 0 1px 2px rgba(0, 0, 0, .45);--shadow-2: 0 14px 34px rgba(0, 0, 0, .55);--shadow-3: 0 6px 18px rgba(0, 0, 0, .45)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:IBM Plex Sans,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,sans-serif;background:var(--bg);background-image:radial-gradient(1100px 520px at 12% -12%,var(--bg-glow),transparent 62%);background-attachment:fixed;color:var(--ink);font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-variant-numeric:tabular-nums;transition:background-color var(--t) var(--ease),color var(--t) var(--ease)}.mono{font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Consolas,Liberation Mono,monospace}.ico{width:16px;height:16px;flex:none;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}.ico-sm{width:14px;height:14px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}.skip-link{position:absolute;left:12px;top:-60px;z-index:200;padding:10px 16px;background:var(--accent);color:var(--accent-ink);border-radius:var(--r-md);font-weight:600;text-decoration:none;transition:top var(--t) var(--ease)}.skip-link:focus{top:12px}:focus-visible{outline:2px solid var(--accent-strong);outline-offset:2px;border-radius:var(--r-sm)}.topbar{position:sticky;top:0;z-index:60;display:flex;align-items:center;justify-content:space-between;gap:16px;height:62px;padding:0 clamp(14px,1.4vw,24px);background:color-mix(in srgb,var(--bg) 84%,transparent);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;min-width:0}.brand-mark{width:32px;height:32px;flex:none;filter:drop-shadow(0 1px 2px rgba(15,23,42,.18))}.brand-text{display:grid;gap:2px;min-width:0}.brand-line{display:flex;align-items:baseline;gap:10px;min-width:0}.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.015em;color:var(--ink)}.brand-cn{font-size:12.5px;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand-more{display:inline-flex;align-items:center;gap:4px;width:fit-content;font-size:11.5px;font-weight:500;letter-spacing:.02em;color:var(--ink-4);text-decoration:none;transition:color var(--t) var(--ease)}.brand-more:hover{color:var(--accent-strong)}.brand-more:focus-visible{outline:2px solid var(--accent-strong);outline-offset:3px;border-radius:4px}.brand-more .ico{width:11px;height:11px}@media (max-width: 520px){.brand-cn{display:none}}.topbar-right{display:flex;align-items:center;gap:10px}.toolbar{display:inline-flex;align-items:center;gap:4px;padding:4px;background:var(--surface);border:1px solid var(--line-strong);border-radius:12px;box-shadow:var(--shadow-1)}.tool-group{display:inline-flex;gap:2px}.tool-sep{width:1px;height:18px;flex:none;background:var(--line-strong)}.tool-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:28px;padding:0 12px;border:0;border-radius:8px;background:transparent;color:var(--ink-3);font-family:inherit;font-size:12px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:background var(--t) var(--ease),color var(--t) var(--ease)}.tool-btn:hover{background:var(--surface-3);color:var(--ink)}.tool-btn.active{background:var(--accent);color:var(--accent-ink)}.tool-btn--icon{width:28px;padding:0}.tool-btn .ico{width:15px;height:15px}.badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 11px;border:1px solid var(--line-strong);border-radius:999px;background:var(--surface);color:var(--ink-3);font-size:11.5px;font-weight:600;white-space:nowrap}.app{width:100%;margin:0 auto;padding:0 0 24px}.layout{display:grid;grid-template-columns:clamp(300px,21vw,400px) minmax(0,1fr);gap:20px;align-items:stretch;padding:20px clamp(14px,1.4vw,24px) 0}.col{display:grid;grid-template-rows:auto minmax(0,1fr);gap:20px;min-width:0}@media (max-width: 1279px){.layout{grid-template-columns:clamp(300px,30vw,380px) minmax(0,1fr)}}@media (max-width: 1023px){.layout{grid-template-columns:minmax(0,1fr)}}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);overflow:visible}.panel-head{border-radius:calc(var(--r-lg) - 1px) calc(var(--r-lg) - 1px) 0 0}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 18px;background:var(--surface-2);border-bottom:1px solid var(--line)}.panel-title{display:flex;align-items:center;gap:9px;font-size:11.5px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-2)}.panel-title .ico{color:var(--accent-strong)}.panel-title .cn{margin-left:2px;font-size:11.5px;font-weight:600;letter-spacing:.04em;text-transform:none;color:var(--ink-3)}.panel-meta{font-family:JetBrains Mono,ui-monospace,monospace;font-size:11.5px;color:var(--ink-3);display:inline-flex;align-items:center;gap:6px}.panel-body{padding:18px;display:grid;gap:20px}.panel-input{display:flex;flex-direction:column}.panel-input .panel-body{flex:1 1 auto;grid-template-rows:minmax(0,1fr) auto auto auto}.panel-input .panel-body>.field:first-child{grid-template-rows:auto auto minmax(42px,1fr) auto auto}.panel-input .ramp{height:auto;min-height:42px;max-height:110px;align-self:stretch}.field{display:grid;gap:8px}.field-label{display:flex;align-items:baseline;gap:8px;font-size:11px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-3)}.field-label .cn{font-size:11.5px;font-weight:600;letter-spacing:.03em;text-transform:none;color:var(--ink-3)}.field-label .req{color:var(--accent)}:root[lang=zh-CN] .panel-title,:root[lang=zh-CN] .field-label{letter-spacing:.04em}.field-meta{display:flex;gap:14px;flex-wrap:wrap;align-items:center;font-size:11.5px;color:var(--ink-3)}.field-meta strong{color:var(--ink-2);font-weight:600}.meta-tail{margin-left:auto}.meta-warn{display:inline-flex;align-items:center;gap:6px;color:#9a5a08;font-weight:600}.meta-warn[hidden]{display:none}.meta-warn .ico{width:13px;height:13px}:root[data-theme=dark] .meta-warn{color:#f0b45c}.counter{margin-left:auto;display:inline-flex;align-items:baseline;gap:3px;font-family:JetBrains Mono,ui-monospace,monospace;font-size:11px;font-weight:600;letter-spacing:.02em;text-transform:none;color:var(--ink-3)}.counter strong{color:var(--ink-2);font-weight:700}.input{width:100%;height:42px;padding:0 12px;background:var(--surface-2);border:1px solid var(--line-strong);border-radius:var(--r-md);color:var(--ink);font-family:JetBrains Mono,ui-monospace,monospace;font-size:13.5px;letter-spacing:.04em;transition:border-color var(--t) var(--ease),background var(--t) var(--ease),box-shadow var(--t) var(--ease)}.input::placeholder{color:var(--ink-4);letter-spacing:0}.input:hover{border-color:var(--line-strong);background:var(--surface)}.input:focus{outline:none;border-color:var(--accent);background:var(--surface);box-shadow:0 0 0 3px var(--accent-soft)}.input-lg{height:46px;font-family:IBM Plex Sans,-apple-system,PingFang SC,Microsoft YaHei,sans-serif;font-size:15.5px;font-weight:500;letter-spacing:.01em}.picker-hidden{position:absolute;width:0;height:0;opacity:0;pointer-events:none;border:0;padding:0}.segmented{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;background:var(--surface-3);border:1px solid var(--line);border-radius:var(--r-md)}.mode-pill{display:inline-flex;align-items:center;justify-content:center;min-width:0;padding:7px 14px;border:0;border-radius:var(--r-sm);background:transparent;color:var(--ink-3);font-family:JetBrains Mono,ui-monospace,monospace;font-size:11.5px;font-weight:600;letter-spacing:.04em;cursor:pointer;transition:background var(--t) var(--ease),color var(--t) var(--ease)}.mode-pill:hover{color:var(--ink)}.mode-pill.active{background:var(--accent);color:var(--accent-ink)}.hint{font-size:11.5px;line-height:1.55;color:var(--ink-3)}.hint strong{color:var(--ink-2);font-weight:600}.field-actions{margin-left:auto;display:inline-flex;align-items:center;gap:6px}.mini-btn{display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 9px;border:1px solid var(--line-strong);border-radius:7px;background:var(--surface-2);color:var(--ink-3);font-family:inherit;font-size:11px;font-weight:600;letter-spacing:.02em;text-transform:none;cursor:pointer;transition:background var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease)}.mini-btn:hover{background:var(--surface-3);border-color:var(--accent-line);color:var(--ink)}.mini-btn .ico{width:13px;height:13px}.mini-btn--accent{border-color:var(--accent-line);color:var(--accent-strong)}:root[data-theme=dark] .mini-btn--accent{color:var(--accent)}.stops{display:grid;gap:4px}.stop{display:grid;grid-template-columns:20px 26px minmax(0,1fr) 42px 24px;align-items:center;gap:8px;padding:4px;border:1px solid transparent;border-radius:var(--r-md);cursor:pointer;transition:background var(--t) var(--ease),border-color var(--t) var(--ease)}.stop:hover{background:var(--surface-2)}.stop.is-sel{background:var(--surface-2);border-color:var(--accent-line)}.stop-swatch{width:26px;height:26px;padding:0;border:1px solid var(--line-strong);border-radius:7px;background:none;cursor:pointer}.stop-swatch::-webkit-color-swatch-wrapper{padding:0}.stop-swatch::-webkit-color-swatch{border:none;border-radius:5px}.stop-swatch::-moz-color-swatch{border:none;border-radius:5px}.stop-hex{height:30px;font-size:12.5px;letter-spacing:.02em}.stop-grip{display:inline-flex;align-items:center;justify-content:center;width:20px;height:26px;padding:0;border:0;border-radius:6px;background:transparent;color:var(--ink-4);cursor:grab;touch-action:none;transition:background var(--t) var(--ease),color var(--t) var(--ease)}.stop-grip:hover{background:var(--surface-3);color:var(--ink-2)}.stop-grip:active{cursor:grabbing}.stop-grip .ico{width:13px;height:13px;fill:currentColor;stroke:none}.stop-pctv{font-family:JetBrains Mono,ui-monospace,monospace;font-size:11.5px;color:var(--ink-3);text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}.stop.is-dragging{position:relative;z-index:4;background:var(--surface-2);border-color:var(--accent-line);box-shadow:0 10px 24px #080e1838;cursor:grabbing}.stop.is-drop{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent-line)}.stop-del{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;padding:0;border:0;border-radius:6px;background:transparent;color:var(--ink-4);cursor:pointer;transition:background var(--t) var(--ease),color var(--t) var(--ease)}.stop-del:hover{background:var(--surface-3);color:var(--ink)}.stop-del:disabled{opacity:.28;cursor:not-allowed}.stop-del .ico{width:14px;height:14px}.ramp{position:relative;height:42px;margin-top:14px;border-radius:9px;background:var(--surface-3);box-shadow:inset 0 0 0 1px var(--line);touch-action:none}.ramp-fill{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit}.ramp-dot{position:absolute;top:0;bottom:0;left:calc(var(--inset, 6px) + var(--p, 0) * (100% - 2 * var(--inset, 6px)));width:12px;margin-left:-6px;border-radius:5px;border:2px solid #fff;box-shadow:0 0 0 1px #00000061,0 2px 6px #0000003d;cursor:grab;touch-action:none;transition:box-shadow var(--t) var(--ease),filter var(--t) var(--ease)}.ramp-dot:after{content:"";position:absolute;left:50%;top:50%;width:4px;height:16px;transform:translate(-50%,-50%);border-left:1px solid rgba(255,255,255,.95);border-right:1px solid rgba(255,255,255,.95);mix-blend-mode:difference}.ramp-dot:hover{filter:brightness(1.06);box-shadow:0 0 0 1px #00000061,0 4px 10px #00000042}.ramp-dot:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.ramp-dot.is-sel{box-shadow:0 0 0 2px var(--accent),0 3px 8px #0000004d;z-index:3}.ramp-dot.is-drag{cursor:grabbing;filter:brightness(1.08);box-shadow:0 0 0 2px var(--accent),0 6px 14px #00000057;z-index:5}:root[data-theme=dark] .ramp-dot{border-color:#0b1220}.ramp-tip{position:absolute;top:50%;left:calc(var(--inset, 6px) + var(--p, 0) * (100% - 2 * var(--inset, 6px)));transform:translate(-50%,-50%);padding:0 6px;border-radius:999px;background:#080e18d6;color:#fff;font-family:JetBrains Mono,ui-monospace,monospace;font-size:10.5px;line-height:1.7;white-space:nowrap;pointer-events:none;z-index:6}body.is-dragging{-webkit-user-select:none;user-select:none}.seg-weights{display:grid;gap:8px;margin-top:14px}.seg-weight-list{display:grid;gap:6px}.seg-weight{display:grid;grid-template-columns:46px minmax(0,1fr) 42px;align-items:center;gap:8px}.seg-pair{display:inline-flex;align-items:center;gap:4px;color:var(--ink-4)}.seg-pair .ico{width:12px;height:12px}.seg-dot{width:13px;height:13px;flex:none;border-radius:4px;box-shadow:0 0 0 1px var(--line-strong)}.slider-row{display:flex;align-items:center;gap:12px}.slider{flex:1;min-width:0;height:24px;background:transparent;-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer}.slider::-webkit-slider-runnable-track{height:6px;border-radius:999px;background:linear-gradient(90deg,var(--accent) var(--fill, 50%),var(--line-strong) var(--fill, 50%))}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;margin-top:-6px;border-radius:50%;background:var(--surface);border:2px solid var(--accent);box-shadow:var(--shadow-1);transition:box-shadow var(--t) var(--ease)}.slider:hover::-webkit-slider-thumb{box-shadow:0 0 0 5px var(--accent-soft)}.slider::-moz-range-track{height:6px;border-radius:999px;background:var(--line-strong)}.slider::-moz-range-progress{height:6px;border-radius:999px;background:var(--accent)}.slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--surface);border:2px solid var(--accent);box-shadow:var(--shadow-1)}.slider:focus-visible{outline-offset:4px}.slider--center{background-image:linear-gradient(90deg,var(--line-strong) 0 var(--lo, 50%),var(--accent) var(--lo, 50%) var(--hi, 50%),var(--line-strong) var(--hi, 50%) 100%);background-size:100% 6px;background-repeat:no-repeat;background-position:center}.slider--center::-webkit-slider-runnable-track{background:none}.slider--center::-moz-range-track{background:none}.slider--center::-moz-range-progress{background:none}.slider-end{font-size:11px;color:var(--ink-4);white-space:nowrap}.slider-val{min-width:42px;text-align:center;font-family:JetBrains Mono,ui-monospace,monospace;font-size:13px;font-weight:600;color:var(--ink);padding:3px 0;border:1px solid var(--line-strong);border-radius:var(--r-sm);background:var(--surface-2)}.preview-duo{display:grid;gap:12px}.preview{position:relative;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;min-height:132px;padding:38px 24px;background:linear-gradient(var(--surface-2),var(--surface-2)) padding-box,var(--surface-2);border-radius:var(--r-md);border:1px solid var(--line);font-size:clamp(26px,4vw,44px);font-weight:600;letter-spacing:-.01em;line-height:1.35;text-align:center;overflow-wrap:anywhere}.preview.is-light{background:#f1f4f7}.preview.is-dark{background:#0f151d}.preview:before{content:attr(data-bg);position:absolute;top:10px;right:13px;font-family:JetBrains Mono,ui-monospace,monospace;font-size:9.5px;font-weight:600;letter-spacing:.16em;pointer-events:none}.preview.is-light:before{color:#0f172a57}.preview.is-dark:before{color:#ffffff61}.preview .ch{transition:color .12s linear}.preview .ch.space{display:inline-block}.preview-warn{display:flex;align-items:flex-start;gap:9px;padding:9px 12px;margin-bottom:12px;border:1px solid var(--accent-line);border-left:3px solid var(--accent-strong);border-radius:var(--r-md);background:var(--accent-soft);color:var(--ink-2);font-size:12px;line-height:1.55}.preview-warn .ico{flex:none;margin-top:2px;color:var(--accent-strong)}:root[data-theme=dark] .preview-warn .ico{color:var(--accent)}.preview-empty{opacity:.35;font-weight:400;letter-spacing:-.01em}.spectrum-bar{display:flex;height:46px;margin-top:14px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line)}.spectrum-seg{flex:1 1 0;min-width:0;display:flex;align-items:center;justify-content:center;font-family:JetBrains Mono,ui-monospace,monospace;font-size:11px;overflow:hidden}.spectrum-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:9px;font-size:11.5px;color:var(--ink-3)}.spectrum-meta strong{font-family:JetBrains Mono,ui-monospace,monospace;font-weight:600;color:var(--ink-2)}.spectrum-meta .mid{color:var(--ink-4)}.panel-output{position:relative;display:flex;flex-direction:column}.panel-output .panel-body{flex:1 1 auto;display:flex;flex-direction:column}.panel-output .code{flex:1 1 auto;max-height:320px}.panel-meta--syntax{max-width:55%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.fmt-menu{position:relative;margin-left:auto}.fmt-menu-btn{max-width:240px}.fmt-menu-btn .btn-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.fmt-menu-btn .ico-caret{width:14px;height:14px;transition:transform var(--t) var(--ease)}.fmt-menu-btn[aria-expanded=true] .ico-caret{transform:rotate(180deg)}.fmt-pop{position:absolute;right:0;z-index:90;width:288px;max-width:calc(100vw - 32px);max-height:var(--fmt-max, 60vh);display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--r-lg);box-shadow:var(--shadow-2);overflow:hidden}.fmt-pop--up{bottom:calc(100% + 8px)}.fmt-pop--down{top:calc(100% + 8px)}.fmt-pop-list{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:4px 0}.fmt-pop .fmt-sec-title{position:sticky;top:0;z-index:2}.fmt-pop .fmt-detail{border-top:1px solid var(--line)}.fmt-sec-title{margin:0;padding:8px 18px 4px;background:var(--surface);box-shadow:0 1px 0 var(--line);font-size:9.5px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-4);overflow-wrap:anywhere}.fmt-items{list-style:none;margin:0;padding:0}.fmt-item{display:block;width:100%;padding:4px 16px 4px 15px;border:0;border-left:3px solid transparent;background:none;color:var(--ink-2);font-family:inherit;font-size:12.5px;font-weight:500;line-height:1.45;text-align:left;cursor:pointer;transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease)}.fmt-item:hover{background:var(--surface-2);color:var(--ink)}.fmt-item.active{background:var(--accent-soft);border-left-color:var(--accent-strong);color:var(--ink);font-weight:600}.fmt-detail{flex:none;display:grid;gap:6px;padding:11px 18px 12px;background:var(--surface-2);border-top:1px solid var(--line)}.fmt-detail .k{font-size:10px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-4)}.fmt-detail code{font-family:JetBrains Mono,ui-monospace,monospace;font-size:11.5px;font-weight:600;color:var(--accent-strong);background:var(--accent-soft);border:1px solid var(--accent-line);border-radius:var(--r-sm);padding:4px 7px;overflow-wrap:anywhere}.fmt-detail .note{font-size:11.5px;line-height:1.5;color:var(--ink-3)}.code{display:block;margin:0;padding:18px;min-height:116px;max-height:320px;overflow:auto;background:var(--code-bg);border:1px solid var(--line);border-radius:var(--r-md);color:var(--code-fg);font-family:JetBrains Mono,ui-monospace,monospace;font-size:12.5px;line-height:1.75;white-space:pre-wrap;word-break:break-all;overflow-wrap:anywhere}.code .tag{color:var(--code-tag);font-weight:600}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 18px;border:1px solid var(--line-strong);border-radius:var(--r-md);background:var(--surface-2);color:var(--ink);font-family:inherit;font-size:13.5px;font-weight:600;cursor:pointer;transition:background var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease),box-shadow var(--t) var(--ease)}.btn:hover{background:var(--surface-3);border-color:var(--accent-line)}.btn:active{box-shadow:inset 0 2px 4px #0f172a1f}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}.btn-primary:hover{background:var(--accent);border-color:var(--accent);filter:brightness(1.08);box-shadow:0 6px 18px var(--accent-soft)}.btn-primary .ico{color:currentColor}.toast{position:fixed;left:50%;bottom:28px;z-index:120;display:flex;align-items:center;gap:9px;padding:11px 18px;background:var(--surface);border:1px solid var(--line-strong);border-left:3px solid var(--accent);border-radius:var(--r-md);box-shadow:var(--shadow-2);color:var(--ink);font-size:13px;font-weight:600;opacity:0;pointer-events:none;transform:translate(-50%,14px);transition:opacity var(--t) var(--ease),transform var(--t) var(--ease)}.toast .ico{color:var(--accent)}.toast.show{opacity:1;transform:translate(-50%)}@media (max-width: 1023px){.preview-duo{display:grid;gap:12px}.preview{min-height:150px}}@media (max-width: 720px){.panel-body{padding:16px}.preview-duo{display:grid;gap:12px}.preview{padding:30px 16px}.spectrum-bar{height:38px}.actions .btn{flex:1 1 auto}}@media (max-width: 420px){.topbar{height:56px}.btn{height:40px;padding:0 14px;font-size:13px}.spectrum-meta{font-size:11px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}.toast{transform:translate(-50%)}}