@keyframes _si{to{opacity:1}}

.legacy-content .hero-banner {background:linear-gradient(135deg, #e9f0e6 0%, #fffefa 100%);border-radius:var(--radius);padding:48px 36px;margin-bottom:32px;color:#fff;position:relative;overflow:hidden}.legacy-content .hero-banner::before {content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");pointer-events:none}.legacy-content .hero-banner::after {content:'';position:absolute;top:-30%;right:-15%;width:50%;height:160%;background:radial-gradient(ellipse,rgba(0,102,255,.12) 0%,transparent 70%);pointer-events:none}.legacy-content .hero-banner .hb-kicker {font-size:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin-bottom:12px}.legacy-content .hero-banner h2 {font-size:26px;font-weight:900;line-height:1.4;margin-bottom:14px}.legacy-content .hero-banner .hb-sub {font-size:14.5px;color:rgba(255,255,255,.65);line-height:1.75;max-width:640px}.legacy-content .concept-card {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:24px 28px;margin:20px 0;box-shadow:var(--shadow-card);transition:border-color .2s,box-shadow .2s}.legacy-content .concept-card:hover {border-color:rgba(0,102,255,.2);box-shadow:0 4px 20px rgba(0,0,0,.06)}.legacy-content .concept-card .cc-head {display:flex;align-items:center;gap:12px;margin-bottom:14px}.legacy-content .concept-card .cc-icon {width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.legacy-content .concept-card .cc-title {font-size:17px;font-weight:800;color:var(--text)}.legacy-content .concept-card .cc-body {font-size:14px;color:var(--sub);line-height:1.85}.legacy-content .concept-card .cc-body b {color:var(--text)}.legacy-content .pattern-card {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:28px;margin:24px 0;box-shadow:var(--shadow-card);position:relative;overflow:hidden;transition:border-color .2s,box-shadow .2s}.legacy-content .pattern-card:hover {border-color:rgba(0,102,255,.2);box-shadow:0 6px 24px rgba(0,0,0,.06)}.legacy-content .pattern-num {position:absolute;top:16px;right:24px;font-size:72px;font-weight:900;line-height:1;pointer-events:none;opacity:.04;color:var(--text)}.legacy-content .pattern-header {display:flex;align-items:center;gap:14px;margin-bottom:18px}.legacy-content .pattern-icon {width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.legacy-content .pattern-title-group {display:flex;flex-direction:column;gap:2px}.legacy-content .pattern-en {font-size:11px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;opacity:.5}.legacy-content .pattern-zh {font-size:19px;font-weight:800;color:var(--text)}.legacy-content .pattern-body {font-size:14.5px;color:var(--sub);line-height:1.85}.legacy-content .pattern-body b {color:var(--text)}.legacy-content .key-list {list-style:none;padding:0;margin:14px 0 0}.legacy-content .key-list li {position:relative;padding:6px 0 6px 24px;font-size:14px;color:var(--sub);line-height:1.75}.legacy-content .key-list li::before {content:'';position:absolute;left:0;top:14px;width:8px;height:8px;border-radius:50%;background:var(--dot-color,var(--accent))}.legacy-content .key-list li b {color:var(--text)}.legacy-content .fig-wrap {margin:28px 0;text-align:center}.legacy-content .fig-wrap img {max-width:100%;border-radius:var(--radius);border:1.5px solid var(--border);box-shadow:var(--shadow-card)}.legacy-content .fig-wrap .fig-cap {font-size:12px;color:var(--sub);margin-top:10px;line-height:1.6}.legacy-content .tool-table {width:100%;border-collapse:separate;border-spacing:0;border-radius:var(--radius);overflow:hidden;border:1.5px solid var(--border);margin:24px 0;font-size:13.5px;box-shadow:var(--shadow-card)}.legacy-content .tool-table thead th {background:#f8fafc;padding:12px 16px;font-weight:700;text-align:left;color:var(--text);border-bottom:1.5px solid var(--border);font-size:13px;letter-spacing:.3px}.legacy-content .tool-table tbody td {padding:10px 16px;border-bottom:1px solid var(--border);color:var(--sub);line-height:1.6;vertical-align:top}.legacy-content .tool-table tbody tr:last-child td {border-bottom:none}.legacy-content .tool-table tbody td:first-child {font-weight:700;color:var(--text);white-space:nowrap;background:rgba(0,102,255,.02)}.legacy-content .tool-table .td-tools {font-family:"SF Mono","Fira Code",Menlo,monospace;font-size:12.5px;color:var(--accent)}.legacy-content .takeaway {background:rgba(0,102,255,.04);border:1.5px solid rgba(0,102,255,.18);border-radius:var(--radius);padding:20px 24px;font-size:15px;color:var(--text);line-height:1.75;margin-top:28px;display:flex;gap:12px;align-items:flex-start}.legacy-content .takeaway b {color:var(--accent)}.legacy-content .takeaway svg {flex-shrink:0;margin-top:2px;color:var(--accent)}.legacy-content .design-principle {background:linear-gradient(135deg,rgba(124,58,237,.04),rgba(0,102,255,.04));border:1.5px solid rgba(124,58,237,.15);border-radius:var(--radius);padding:20px 24px;margin:20px 0;font-size:14px;color:var(--sub);line-height:1.85}.legacy-content .design-principle b {color:var(--purple)}.legacy-content .design-principle .dp-title {font-size:15px;font-weight:800;color:var(--text);margin-bottom:8px;display:flex;align-items:center;gap:8px}.legacy-content .arch-demo {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:28px;margin:24px 0;box-shadow:var(--shadow-card)}.legacy-content .arch-tabs {display:flex;gap:6px;margin-bottom:20px;flex-wrap:wrap}.legacy-content .arch-tab {border:1.5px solid var(--border);background:var(--bg);border-radius:99px;padding:9px 18px;font-size:13px;font-weight:700;color:var(--sub);cursor:pointer;transition:all .2s;font-family:inherit}.legacy-content .arch-tab:hover {border-color:var(--accent);color:var(--accent)}.legacy-content .arch-tab.active {background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 2px 10px rgba(0,102,255,.25)}.legacy-content .sim-controls {display:flex;gap:10px;margin-bottom:24px;align-items:center;padding-bottom:16px;border-bottom:1px solid rgba(0,0,0,.06)}.legacy-content .sim-btn {background:var(--card);border:1.5px solid var(--border);border-radius:8px;padding:6px 14px;font-size:13px;font-weight:700;color:var(--text);cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:6px;font-family:inherit}.legacy-content .sim-btn:hover {border-color:var(--accent);color:var(--accent)}.legacy-content .sim-btn.playing {background:var(--accent);color:#fff;border-color:var(--accent);pointer-events:none}.legacy-content .sim-status {font-size:13px;color:var(--sub);font-weight:600;margin-left:auto;font-variant-numeric:tabular-nums;background:var(--bg);padding:4px 10px;border-radius:6px}.legacy-content .arch-panel {display:block}.legacy-content .arch-panel.hidden {display:none}.legacy-content .arch-panel .af-node, .legacy-content .arch-panel .af-node-sm, .legacy-content .arch-panel .af-file, .legacy-content .arch-panel .af-file-sm, .legacy-content .arch-panel .af-arrow, .legacy-content .arch-panel .af-arrow-down, .legacy-content .arch-panel .af-arrow-up, .legacy-content .arch-panel .par-fork, .legacy-content .arch-panel .arch-verdict, .legacy-content .arch-panel .af-loop-arrow {
  transition:all .3s cubic-bezier(.23,1,.32,1)}.legacy-content .arch-panel .ctx-fill {transition:width .4s ease, background .4s ease}.legacy-content .arch-panel.sim-ready .af-node, .legacy-content .arch-panel.sim-ready .af-node-sm, .legacy-content .arch-panel.sim-ready .af-file, .legacy-content .arch-panel.sim-ready .af-file-sm, .legacy-content .arch-panel.sim-ready .af-arrow, .legacy-content .arch-panel.sim-ready .af-arrow-down, .legacy-content .arch-panel.sim-ready .af-arrow-up, .legacy-content .arch-panel.sim-ready .par-fork, .legacy-content .arch-panel.sim-ready .arch-verdict, .legacy-content .arch-panel.sim-ready .af-loop-arrow {
  opacity:0;transform:translateY(6px) scale(.95)}.legacy-content .arch-panel.sim-ready .ctx-fill {width:0 !important}.legacy-content .arch-panel .sim-show {opacity:1 !important;transform:translateY(0) scale(1) !important}.legacy-content .arch-panel .sim-highlight {box-shadow:0 0 0 4px rgba(0,102,255,.2);transform:scale(1.05) !important;z-index:10;position:relative}.legacy-content .arch-panel .af-node.sim-highlight {background:var(--accent) !important}.legacy-content .arch-flow {display:flex;align-items:center;gap:0;padding:20px 0;flex-wrap:wrap;justify-content:center}.legacy-content .af-node {padding:10px 18px;border-radius:10px;font-size:13px;font-weight:700;color:#fff;white-space:nowrap}.legacy-content .af-node.accent {background:var(--accent)}.legacy-content .af-node.purple {background:var(--purple)}.legacy-content .af-node.amber {background:var(--amber)}.legacy-content .af-node.success {background:var(--success)}.legacy-content .af-node.accent-dim {background:rgba(0,102,255,.7)}.legacy-content .af-arrow {width:28px;height:2px;background:var(--border);position:relative;margin:0 2px}.legacy-content .af-arrow::after {content:'';position:absolute;right:0;top:-3px;border:4px solid transparent;border-left:6px solid var(--sub)}.legacy-content .af-loop-arrow {font-size:12px;font-weight:700;color:var(--sub);margin-left:12px;opacity:.6}.legacy-content .arch-files {display:flex;gap:8px;justify-content:center;flex-wrap:wrap;padding:8px 0 16px}.legacy-content .af-file {padding:6px 14px;border-radius:8px;font-size:12px;font-weight:600;background:rgba(16,185,129,.08);color:var(--success);border:1px solid rgba(16,185,129,.2)}.legacy-content .arch-ctx-bar {display:flex;align-items:center;gap:12px;padding:12px 0;flex-wrap:wrap}.legacy-content .ctx-label {font-size:12px;font-weight:700;color:var(--sub);min-width:90px}.legacy-content .ctx-track {flex:1;height:10px;background:rgba(0,0,0,.06);border-radius:99px;overflow:hidden;min-width:120px}.legacy-content .ctx-fill {height:100%;border-radius:99px;transition:width .4s ease}.legacy-content .danger-fill {background:linear-gradient(90deg,#f59e0b,#ef4444)}.legacy-content .good-fill {background:linear-gradient(90deg,#10b981,#34d399)}.legacy-content .ctx-pct {font-size:12px;font-weight:800;min-width:100px}.legacy-content .danger-text {color:#ef4444}.legacy-content .good-text {color:#10b981}.legacy-content .arch-verdict {display:flex;align-items:flex-start;gap:14px;padding:16px 20px;border-radius:12px;margin-top:12px}.legacy-content .arch-verdict.bad {background:rgba(239,68,68,.05);border:1px solid rgba(239,68,68,.15)}.legacy-content .arch-verdict.good {background:rgba(16,185,129,.05);border:1px solid rgba(16,185,129,.15)}.legacy-content .arch-verdict.best {background:linear-gradient(135deg,rgba(124,58,237,.05),rgba(16,185,129,.05));border:1px solid rgba(124,58,237,.15)}.legacy-content .verdict-icon {font-size:22px;flex-shrink:0;line-height:1}.legacy-content .arch-verdict.bad .verdict-icon {color:#ef4444}.legacy-content .arch-verdict.good .verdict-icon {color:#10b981}.legacy-content .arch-verdict.best .verdict-icon {color:#7c3aed}.legacy-content .verdict-title {font-size:15px;font-weight:800;color:var(--text);margin-bottom:4px}.legacy-content .verdict-desc {font-size:13px;color:var(--sub);line-height:1.7}.legacy-content .arch-flow-par {padding:16px 0}.legacy-content .par-main {display:flex;flex-direction:column;align-items:center;gap:12px}.legacy-content .af-arrow-down, .legacy-content .af-arrow-up {width:2px;height:20px;background:var(--border);position:relative;margin:0 auto}.legacy-content .af-arrow-down::after {content:'';position:absolute;bottom:0;left:-3px;border:4px solid transparent;border-top:6px solid var(--sub)}.legacy-content .af-arrow-up::after {content:'';position:absolute;top:0;left:-3px;border:4px solid transparent;border-bottom:6px solid var(--sub)}.legacy-content .par-fork {display:flex;gap:16px;justify-content:center;flex-wrap:wrap;padding:8px 0;border:1.5px dashed rgba(124,58,237,.2);border-radius:12px;background:rgba(124,58,237,.02);width:100%;max-width:400px}.legacy-content .par-branch {display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 16px}.legacy-content .af-node-sm {padding:7px 14px;border-radius:8px;font-size:12px;font-weight:700;color:#fff;background:var(--purple)}.legacy-content .af-file-sm {font-size:10px;font-weight:600;color:var(--success);opacity:.7}@media(max-width:768px){.legacy-content .hero-banner {padding:32px 20px}.legacy-content .hero-banner h2 {font-size:21px}.legacy-content .pattern-card {padding:20px 18px}.legacy-content .pattern-num {font-size:48px}.legacy-content .pattern-zh {font-size:17px}.legacy-content .tool-table {font-size:12.5px}.legacy-content .tool-table thead th, .legacy-content .tool-table tbody td {padding:8px 10px}.legacy-content .arch-demo {padding:18px}.legacy-content .arch-tab {padding:7px 12px;font-size:12px}.legacy-content .arch-flow {gap:4px}.legacy-content .af-node {padding:8px 12px;font-size:12px}.legacy-content .par-fork {gap:8px;padding:8px}}

.legacy-content .xa-tldr {margin:18px 0 4px;padding:14px 18px;background:rgba(0,102,255,0.04);border:1px solid rgba(0,102,255,0.16);border-radius:10px}.legacy-content .xa-tldr .xa-tldr-tag {display:block;font-size:11px;font-weight:800;letter-spacing:1px;color:var(--accent,#0066ff);margin-bottom:6px}.legacy-content .xa-tldr p {margin:0;font-size:15px;line-height:1.8;color:var(--text,#1f2937)}