:root{--background: #f7f7f8;--surface: #ffffff;--surface-elevated: #ffffff;--border: #e6e6ea;--border-strong: #d4d4dc;--text: #17171c;--text-secondary: #6b6b76;--text-faint: #9a9aa5;--accent: #2563eb;--accent-soft: #eff4ff;--success: #16a34a;--success-soft: #eefaf1;--warning: #d97706;--warning-soft: #fdf6ec;--danger: #dc2626;--danger-soft: #fdefef;--supersession: #7c3aed;--supersession-soft: #f3eefd;--shadow: 0 1px 2px rgba(23, 23, 28, .06), 0 4px 16px rgba(23, 23, 28, .06);--shadow-lift: 0 2px 4px rgba(23, 23, 28, .08), 0 12px 32px rgba(23, 23, 28, .12);--radius: 12px;--radius-sm: 8px;--radius-full: 999px;--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace}[data-theme=dark]{--background: #0e0e12;--surface: #16161c;--surface-elevated: #1c1c24;--border: #26262f;--border-strong: #34343f;--text: #ececf2;--text-secondary: #a2a2b0;--text-faint: #70707e;--accent: #6ea2ff;--accent-soft: #16233f;--success: #4ade80;--success-soft: #12291a;--warning: #fbbf24;--warning-soft: #2b2210;--danger: #f87171;--danger-soft: #301717;--supersession: #b39af7;--supersession-soft: #241d3a;--shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 16px rgba(0, 0, 0, .35);--shadow-lift: 0 2px 4px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .5)}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}body{font-family:var(--font);background:var(--background);color:var(--text);line-height:1.5;transition:background-color .3s ease,color .3s ease}button{font-family:inherit;cursor:pointer}input,textarea,select{font-family:inherit}a{color:var(--accent);text-decoration:none}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.container{max-width:1280px;margin:0 auto;padding:0 32px}.app-shell{min-height:100vh;display:flex;flex-direction:column}.main{flex:1}.nav{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--background) 82%,transparent);-webkit-backdrop-filter:saturate(180%) blur(16px);backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid var(--border)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px}.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:-.02em;color:var(--text);border:none;background:none}.brand-mark{width:26px;height:26px;border-radius:7px;background:linear-gradient(135deg,var(--accent),var(--supersession));display:grid;place-items:center;color:#fff;font-size:13px;font-weight:700}.brand-tag{color:var(--text-faint);font-weight:400;font-size:13px}.nav-links{display:flex;align-items:center;gap:4px}.nav-link{border:none;background:transparent;color:var(--text-secondary);font-size:14px;font-weight:500;padding:8px 14px;border-radius:var(--radius-full);transition:background-color .15s ease,color .15s ease}.nav-link:hover{background:var(--border);color:var(--text)}.nav-link.active{background:var(--surface-elevated);color:var(--text);box-shadow:inset 0 0 0 1px var(--border)}.theme-toggle{width:34px;height:34px;border-radius:var(--radius-full);border:1px solid var(--border);background:var(--surface);color:var(--text-secondary);display:grid;place-items:center;font-size:15px;margin-left:8px}.theme-toggle:hover{color:var(--text);border-color:var(--border-strong)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:14px;font-weight:500;padding:10px 18px;transition:background-color .15s ease,border-color .15s ease,transform .05s ease,box-shadow .15s ease}.btn:hover{border-color:var(--border-strong);box-shadow:var(--shadow)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:color-mix(in srgb,var(--accent) 88%,#000);border-color:var(--accent)}.btn-ghost{border-color:var(--border);background:transparent}.btn-lg{padding:14px 24px;font-size:15px}.btn-block{width:100%}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.card-elevated{background:var(--surface-elevated);box-shadow:var(--shadow-lift)}.card-title{font-size:15px;font-weight:600;letter-spacing:-.01em}.card-sub{color:var(--text-secondary);font-size:13px;margin-top:4px}.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 10px;border-radius:var(--radius-full);letter-spacing:.01em}.pill-neutral{background:var(--border);color:var(--text-secondary)}.pill-success{background:var(--success-soft);color:var(--success)}.pill-warning{background:var(--warning-soft);color:var(--warning)}.pill-danger{background:var(--danger-soft);color:var(--danger)}.pill-supersession{background:var(--supersession-soft);color:var(--supersession)}.pill-accent{background:var(--accent-soft);color:var(--accent)}.dot{width:8px;height:8px;border-radius:50%;background:var(--text-faint);display:inline-block}.dot-ok{background:var(--success)}.dot-err{background:var(--danger)}.dot-warn{background:var(--warning)}.status-bar{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--text-secondary)}.status-item{display:inline-flex;align-items:center;gap:7px}.status-label{font-weight:500}.hero{padding:96px 0 64px;text-align:center;max-width:780px;margin:0 auto}.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:var(--text-secondary);background:var(--surface);border:1px solid var(--border);padding:6px 14px;border-radius:var(--radius-full);margin-bottom:28px}.hero-title{font-size:clamp(36px,5vw,56px);font-weight:700;letter-spacing:-.03em;line-height:1.08;margin-bottom:20px}.hero-title em{font-style:normal;background:linear-gradient(120deg,var(--accent),var(--supersession));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero-sub{font-size:18px;color:var(--text-secondary);margin-bottom:36px;max-width:600px;margin-left:auto;margin-right:auto}.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:40px}.hero-status{display:flex;justify-content:center}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;padding-bottom:96px}.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:border-color .15s ease,transform .15s ease,box-shadow .15s ease;display:flex;flex-direction:column;gap:8px}.feature-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow-lift);transform:translateY(-2px)}.feature-icon{font-size:20px;margin-bottom:4px}.feature-title{font-weight:600;font-size:15px}.feature-text{color:var(--text-secondary);font-size:13.5px;line-height:1.55}.section{padding:48px 0 96px}.section-head{margin-bottom:28px}.section-title{font-size:28px;font-weight:700;letter-spacing:-.02em;margin-bottom:8px}.section-sub{color:var(--text-secondary);font-size:15px;max-width:640px}.field{margin-bottom:16px}.field-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.text-input,.textarea,.select-input{width:100%;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font-size:14px;padding:11px 14px;transition:border-color .15s ease,box-shadow .15s ease}.text-input:focus,.textarea:focus,.select-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.textarea{min-height:96px;resize:vertical;line-height:1.5}.table{width:100%;border-collapse:collapse;font-size:13.5px}.table th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);font-weight:600;padding:10px 12px;border-bottom:1px solid var(--border)}.table td{padding:12px;border-bottom:1px solid var(--border);vertical-align:top}.table tr:last-child td{border-bottom:none}.mono{font-family:var(--mono);font-size:12px;overflow-wrap:anywhere}.timeline{list-style:none;position:relative}.timeline-item{position:relative;padding-left:28px;padding-bottom:22px}.timeline-item:before{content:"";position:absolute;left:6px;top:4px;bottom:0;width:2px;background:var(--border)}.timeline-item:last-child:before{bottom:calc(100% - 20px)}.timeline-dot{position:absolute;left:0;top:2px;width:14px;height:14px;border-radius:50%;background:var(--surface);border:2px solid var(--border-strong)}.timeline-item.active .timeline-dot{border-color:var(--accent);background:var(--accent)}.timeline-item.done .timeline-dot{border-color:var(--success);background:var(--success)}.timeline-label{font-weight:600;font-size:14px}.timeline-sub{color:var(--text-secondary);font-size:13px;margin-top:2px}.timeline-detail{color:var(--text-secondary);font-size:13px;margin-top:4px;line-height:1.5}.stages{display:flex;flex-direction:column;gap:10px}.stage{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;background:var(--surface);transition:border-color .2s ease,background-color .2s ease,opacity .2s ease;opacity:.55}.stage.pending{opacity:.55}.stage.active{opacity:1;border-color:var(--accent);background:var(--accent-soft)}.stage.done{opacity:1;border-color:var(--success);background:var(--success-soft)}.stage-index{flex-shrink:0;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:600;background:var(--border);color:var(--text-secondary)}.stage.active .stage-index{background:var(--accent);color:#fff}.stage.done .stage-index{background:var(--success);color:#fff}.stage-body{flex:1;min-width:0}.stage-title{font-weight:600;font-size:14px}.stage-detail{color:var(--text-secondary);font-size:13px;margin-top:3px;line-height:1.5}.stage-spinner{flex-shrink:0;width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin-top:2px}@keyframes spin{to{transform:rotate(360deg)}}.result-panel{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--surface)}.result-header{padding:20px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.result-body{padding:20px 24px}.transition-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:16px 0}.transition-card{border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;background:var(--surface)}.transition-title{font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:8px}.arrow{display:flex;align-items:center;gap:8px;font-size:14px}.arrow-arrow{color:var(--text-faint)}.detail-panel{background:var(--surface-elevated);border:1px solid var(--border);border-radius:var(--radius);padding:20px;max-height:560px;overflow-y:auto}.detail-row{display:flex;justify-content:space-between;gap:16px;padding:8px 0;border-bottom:1px solid var(--border);font-size:13.5px}.detail-row:last-child{border-bottom:none}.detail-key{color:var(--text-secondary);flex-shrink:0}.detail-val{text-align:right;word-break:break-word}.detail-statement{font-size:13.5px;line-height:1.6;padding:12px 14px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:4px;overflow-wrap:anywhere;word-break:break-word;white-space:pre-wrap}.graph-shell{position:relative;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);overflow:hidden;min-height:560px}.graph-toolbar{position:absolute;top:14px;right:14px;z-index:5;display:flex;gap:6px}.graph-toolbar .btn{padding:8px 12px;font-size:13px;background:var(--surface-elevated)}.graph-legend{position:absolute;bottom:14px;left:14px;z-index:5;display:flex;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--text-secondary);background:color-mix(in srgb,var(--surface-elevated) 85%,transparent);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px}.graph-svg{display:block;width:100%;height:560px;touch-action:none}.graph-node{cursor:pointer}.graph-node-title{font-size:12px;font-weight:600;fill:var(--text)}.graph-node-label{font-size:10.5px;fill:var(--text-secondary)}.graph-edge{fill:none;stroke-width:1.6;stroke-linecap:round}.graph-edge-flow{stroke-dasharray:5 5;animation:dash 1.2s linear infinite}@keyframes dash{to{stroke-dashoffset:-10}}.graph-empty{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;color:var(--text-secondary);font-size:14px}.callout{border-radius:var(--radius-sm);padding:14px 16px;font-size:13.5px;line-height:1.55;border:1px solid}.callout-info{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 25%,var(--border));color:var(--text)}.callout-success{background:var(--success-soft);border-color:color-mix(in srgb,var(--success) 25%,var(--border));color:var(--text)}.callout-warning{background:var(--warning-soft);border-color:color-mix(in srgb,var(--warning) 25%,var(--border));color:var(--text)}.callout-danger{background:var(--danger-soft);border-color:color-mix(in srgb,var(--danger) 25%,var(--border));color:var(--text)}.callout-supersession{background:var(--supersession-soft);border-color:color-mix(in srgb,var(--supersession) 25%,var(--border));color:var(--text)}.disclosure{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;background:var(--surface)}.disclosure-summary{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:12px 14px;background:none;border:none;color:var(--text);font-size:13.5px;font-weight:500;text-align:left}.disclosure-summary:hover{background:var(--border)}.disclosure-body{padding:12px 14px;border-top:1px solid var(--border);font-size:13px;color:var(--text-secondary);line-height:1.6}.spinner{width:20px;height:20px;border:2.5px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.loading{display:flex;align-items:center;gap:12px;color:var(--text-secondary);font-size:14px;padding:32px;justify-content:center}.error-box{border:1px solid var(--danger);background:var(--danger-soft);color:var(--danger);border-radius:var(--radius-sm);padding:12px 16px;font-size:13.5px}.footer{border-top:1px solid var(--border);padding:24px 0;color:var(--text-faint);font-size:13px}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}@media (max-width: 900px){.container{padding:0 20px}.nav-link{padding:8px 10px;font-size:13px}.hero{padding:64px 0 40px}.graph-svg,.graph-shell{min-height:440px}}@media (max-width: 620px){.brand-tag{display:none}.nav-links{gap:2px}.hero-title{font-size:32px}.section{padding:32px 0 64px}}