:root{--bg-warm: #FAF8F5;--bg-rail: #F3EFE8;--bg-card: #FFFFFF;--bg-soft: #EAE4D9;--bg-accent-soft: #EBF2FA;--accent: #134D8C;--accent-hover: #0D3868;--accent-deep: #0D2D52;--ink-strong: #18222C;--ink-body: #33404D;--ink-muted: #505D6A;--border-hairline: #E2DDD3;--border-strong: #CCC4B6;--radius-card: 16px;--radius-panel: 12px;--radius-pill: 999px;--radius-btn: 10px;--shadow-soft: 0 8px 24px -6px rgba(24, 34, 44, .06), 0 2px 6px -1px rgba(24, 34, 44, .03);--ease-spring: cubic-bezier(.22, 1, .36, 1)}*{box-sizing:border-box;margin:0;padding:0}html,body{background-color:var(--bg-warm);color:var(--ink-strong);font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased;caret-color:var(--accent);overflow-x:hidden;max-width:100vw}h1,h2,h3,h4{text-wrap:balance}::selection{background-color:var(--accent);color:#fff}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer;background:none;border:none}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.tabular-nums{font-variant-numeric:tabular-nums;font-family:SF Mono,JetBrains Mono,Menlo,ui-monospace,monospace}.companion-shell{min-height:100vh;display:flex;flex-direction:column;background:var(--bg-warm)}.top-navbar{position:sticky;top:0;z-index:40;height:58px;background:#faf8f5f5;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-hairline);padding:0 20px;display:flex;align-items:center}.top-navbar-inner{width:100%;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:16px}.brand-identity{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;justify-self:start;min-width:0}.brand-logo-wrap{background:#fff;border:1px solid var(--border-hairline);border-radius:9px;padding:3px 5px;display:flex;align-items:center;justify-content:center;height:36px;flex-shrink:0;box-shadow:0 1px 3px #18222c0a}.brand-logo-wrap img{height:28px;width:auto;display:block}.brand-text-wrap{display:flex;flex-direction:column;justify-content:center;gap:1px;min-width:0}.brand-name{font-size:1.02rem;font-weight:800;color:var(--accent-deep);letter-spacing:-.02em;line-height:1.18;white-space:nowrap}.brand-course-tag{font-size:.68rem;color:var(--ink-muted);font-weight:600;line-height:1.15;white-space:nowrap}.module-nav-pills{display:inline-flex;align-items:center;justify-self:center;gap:3px;background:var(--bg-rail);padding:4px;border-radius:var(--radius-pill);border:1px solid var(--border-hairline);box-shadow:inset 0 1px 2px #18222c08}.module-pill-btn{display:inline-flex;align-items:center;gap:5px;padding:6px 13px;border-radius:var(--radius-pill);font-size:.82rem;font-weight:600;color:var(--ink-body);transition:all .2s var(--ease-spring);white-space:nowrap}.module-pill-btn:hover{color:var(--accent);background:#ffffff8c}.module-pill-btn.active{background:var(--accent);color:#fff;box-shadow:0 2px 6px #134d8c38}.navbar-actions{display:inline-flex;align-items:center;justify-self:end;gap:8px;flex-shrink:0}.user-identity-capsule{display:inline-flex;align-items:center;gap:8px;padding:4px 11px 4px 9px;height:34px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--border-strong);font-size:.78rem;font-weight:600;color:var(--ink-strong);transition:all .18s var(--ease-spring);white-space:nowrap;box-shadow:0 1px 3px #18222c0a}.user-identity-capsule:hover,.user-identity-capsule.is-open,.user-identity-capsule.is-teacher{border-color:var(--accent);background:var(--bg-accent-soft);color:var(--accent-deep)}.user-capsule-primary{display:inline-flex;align-items:center;gap:5px}.user-capsule-name{font-weight:700;color:var(--ink-strong)}.user-capsule-score{display:inline-flex;align-items:center;padding:1px 6px;border-radius:999px;background:var(--bg-accent-soft);color:var(--accent);font-size:.72rem;font-weight:800}.user-identity-capsule:hover .user-capsule-score,.user-identity-capsule.is-open .user-capsule-score{background:#fff}.user-capsule-divider{width:1px;height:13px;background:var(--border-strong)}.user-capsule-switch{display:inline-flex;align-items:center;gap:3px;font-size:.74rem;font-weight:700;color:var(--accent)}.ghost-pill-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--border-strong);font-size:.8rem;font-weight:600;color:var(--ink-strong);transition:all .18s var(--ease-spring);white-space:nowrap}.ghost-pill-btn:hover{border-color:var(--accent);color:var(--accent)}.primary-action-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:7px 16px;border-radius:var(--radius-pill);background:var(--accent);color:#fff;font-size:.82rem;font-weight:700;transition:background-color .18s var(--ease-spring);white-space:nowrap}.primary-action-btn:hover{background:var(--accent-hover)}.accent-pill{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:var(--radius-pill);font-size:.75rem;font-weight:700;background:var(--bg-accent-soft);color:var(--accent);white-space:nowrap}.companion-card{background:var(--bg-card);border:1px solid var(--border-hairline);border-radius:var(--radius-card);box-shadow:var(--shadow-soft);min-width:0}button.companion-card{transition:border-color .18s var(--ease-spring),transform .18s var(--ease-spring)}button.companion-card:hover{border-color:var(--accent);transform:translateY(-1px)}.workbench-layout{flex:1;width:100%;min-height:calc(100vh - 58px);display:grid;grid-template-columns:272px minmax(0,1fr)}.workbench-rail{background:var(--bg-rail);border-right:1px solid var(--border-hairline);padding:20px 16px;display:flex;flex-direction:column;justify-content:flex-start;gap:20px;position:sticky;top:58px;height:calc(100vh - 58px);max-height:calc(100vh - 58px);overflow-y:auto;overscroll-behavior:contain}.rail-section{display:flex;flex-direction:column;gap:12px}.rail-module-title{font-size:1.18rem;font-weight:800;color:var(--ink-strong);letter-spacing:-.02em}.rail-module-desc{font-size:.78rem;color:var(--ink-muted);line-height:1.45}.rail-mode-tabs{display:flex;flex-direction:column;gap:4px;background:var(--bg-soft);padding:4px;border-radius:10px}.rail-mode-btn{display:flex;align-items:center;gap:8px;padding:8px 11px;border-radius:7px;font-size:.82rem;font-weight:600;color:var(--ink-body);text-align:left;transition:all .16s var(--ease-spring)}.rail-mode-btn:hover{color:var(--accent)}.rail-mode-btn.active{background:#fff;color:var(--accent);font-weight:700;box-shadow:0 1px 4px #18222c0f}.rail-group-label{font-size:.78rem;font-weight:800;color:var(--ink-muted);letter-spacing:.04em;padding:4px 4px 0}.rail-item-list{display:flex;flex-direction:column;gap:6px;flex:1;min-height:0;overflow-y:auto;padding-right:2px}.rail-topic-btn{text-align:left;padding:10px 12px;border-radius:10px;background:#ffffff8c;border:1px solid transparent;display:flex;flex-direction:column;gap:2px;transition:all .16s var(--ease-spring)}.rail-topic-btn:hover{background:#fff;border-color:var(--border-strong)}.rail-topic-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.rail-topic-meta{font-size:.76rem;opacity:.82;font-weight:600}.rail-topic-name{font-size:.85rem;font-weight:700;line-height:1.35}.workbench-stage{display:grid;grid-template-columns:minmax(420px,1fr) minmax(460px,1.12fr);min-height:calc(100vh - 58px);background:#fff}.mobile-pane-switcher{display:none}.workbench-stage-single{display:flex;flex-direction:column;min-height:calc(100vh - 58px);background:#fff;padding:28px 36px;gap:22px}.editorial-pane{padding:22px clamp(22px,2.4vw,38px);background:#fff;border-right:1px solid var(--border-hairline);display:flex;flex-direction:column;justify-content:flex-start;gap:18px}.editorial-header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--border-hairline);flex-wrap:nowrap}.editorial-title{font-size:clamp(1.4rem,1.85vw,1.85rem);font-weight:800;color:var(--ink-strong);line-height:1.34}.mnemonic-banner{padding:14px 0;border-top:1px solid var(--border-hairline);border-bottom:1px solid var(--border-hairline)}.authority-block{padding:14px 0;border-bottom:1px solid var(--border-hairline);display:flex;flex-direction:column;gap:6px}.authority-block-header{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:.82rem;font-weight:800;color:var(--accent)}.authority-block-body{font-size:.94rem;color:var(--ink-strong);line-height:1.66;transition:filter .25s ease}.authority-block-body.is-masked{filter:blur(6px);-webkit-user-select:none;user-select:none;cursor:pointer}.atlas-pane{background:var(--bg-warm);padding:20px clamp(18px,2vw,30px);display:flex;flex-direction:column;justify-content:flex-start;gap:14px}.atlas-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--border-hairline);flex-wrap:wrap}.segmented-control{display:inline-flex;align-items:center;gap:4px;background:var(--bg-rail);padding:4px;border-radius:9px;border:1px solid var(--border-hairline)}.segment-btn{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:6px;font-size:.79rem;font-weight:600;color:var(--ink-body);white-space:nowrap}.segment-btn.active{background:#fff;color:var(--accent);font-weight:700;box-shadow:0 1px 4px #18222c0f}.vector-flowchart-board{background:#fff;border:1px solid var(--border-strong);border-radius:16px;padding:18px 22px;display:flex;flex-direction:column;box-shadow:var(--shadow-soft)}.vector-node-card{display:grid;grid-template-columns:36px minmax(0,1fr);gap:12px;align-items:start;padding:13px 4px;border-bottom:1px solid var(--border-hairline);transition:background-color .18s ease}.vector-node-card:last-child{border-bottom:none}.vector-node-num{height:26px;border-radius:6px;background:var(--accent);color:#fff;font-size:.76rem;font-weight:800;display:inline-flex;align-items:center;justify-content:center}.origin-figure-showcase{flex:1;min-height:calc(100vh - 155px);width:100%;background:#fff;border:1px solid var(--border-strong);border-radius:16px;padding:20px 24px;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:14px;overflow:auto;cursor:zoom-in;box-shadow:var(--shadow-soft);transition:border-color .18s ease}.origin-figure-showcase:hover{border-color:var(--accent)}.origin-figure-showcase img{width:100%;height:auto;max-width:100%;object-fit:contain;display:block;margin:auto 0;transition:width .18s ease,height .18s ease}.origin-figure-showcase.is-fit-screen img{width:100%;height:calc(100vh - 210px);min-height:520px;object-fit:contain}.origin-figure-showcase.is-inline-zoomed{justify-content:flex-start;align-items:flex-start}.origin-figure-showcase.is-inline-zoomed img{height:auto;max-width:none;max-height:none;object-fit:contain;margin:0}.gis-canvas-shell{flex:0 0 auto;position:sticky;top:74px;min-height:calc(100vh - 116px);width:100%;background:#fff;border:1px solid var(--border-strong);border-radius:16px;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow-soft)}.gis-canvas-shell.is-compact{flex:0 0 auto;min-height:360px}.gis-canvas-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 16px;background:var(--bg-paper);border-bottom:1px solid var(--border-hairline);flex-wrap:wrap}.gis-zoom-pill-group{display:inline-flex;align-items:center;gap:2px;background:#fff;border:1px solid var(--border-strong);border-radius:999px;padding:2px 4px}.gis-icon-btn{width:28px;height:28px;border:none;border-radius:999px;background:transparent;color:var(--ink-body);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background-color .14s ease,color .14s ease}.gis-icon-btn:hover{background:var(--bg-accent-soft);color:var(--accent)}.gis-scale-readout{min-width:46px;text-align:center;font-size:.78rem;font-weight:800;color:var(--accent);padding:0 4px}.gis-canvas-stage{flex:1;width:100%;min-height:520px;position:relative;overflow:hidden;background-color:#fff;background-image:radial-gradient(rgba(19,77,140,.12) 1px,transparent 1px);background-size:20px 20px}.gis-canvas-shell.is-compact .gis-canvas-stage{min-height:280px}.gis-canvas-stage:active{cursor:grabbing}.gis-canvas-img{display:block;-webkit-user-select:none;user-select:none;background:#fff;border-radius:8px;box-shadow:0 4px 18px #18222c0f}.gis-canvas-img.is-full-width{width:100%;height:auto;max-width:100%}.gis-canvas-img.is-contain{width:auto;max-width:100%;height:auto;max-height:calc(100vh - 240px);object-fit:contain}.gis-canvas-shell.is-compact .gis-canvas-img.is-contain{width:auto;max-width:100%;height:auto;max-height:420px;object-fit:contain}.gis-canvas-statusbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 16px;background:var(--bg-paper);border-top:1px solid var(--border-hairline);font-size:.78rem}.table-scroll-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--border-strong);border-radius:10px;background:#fff;box-shadow:0 1px 4px #0f172a0a}.companion-table{width:100%;border-collapse:collapse;font-size:.84rem;line-height:1.5;table-layout:auto;word-break:normal;overflow-wrap:break-word;background:#fff;border:1px solid var(--border-hairline);border-radius:10px}.table-scroll-wrap>.companion-table{border:none;border-radius:0}.companion-table th,.companion-table td{padding:9px 11px;border-bottom:1px solid var(--border-hairline);text-align:left;vertical-align:middle;word-break:normal}.companion-table tbody tr:last-child td,.companion-table tbody tr:last-child th{border-bottom:none}.companion-table tbody tr:nth-child(2n){background:#f7f5f073}.companion-table tbody tr:hover{background:#1448780b}.companion-table th{color:var(--ink-strong);font-weight:700;font-size:.79rem;letter-spacing:.01em;background:#f4f1ea;border-bottom:1.5px solid var(--border-strong);white-space:nowrap}.companion-table tbody th{background:#faf8f4;border-bottom:1px solid var(--border-hairline);border-right:1px solid var(--border-hairline);white-space:nowrap}.companion-table th:first-child,.companion-table td:first-child{min-width:112px}.companion-table.tabular-nums td:first-child,.companion-table.tabular-nums td:last-child{white-space:nowrap}.companion-table .col-nowrap{white-space:nowrap!important}.companion-table .col-num{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}.companion-table input[type=number],.table-num-input{width:62px;max-width:100%;padding:4px 6px;border-radius:6px;border:1px solid var(--border-strong);background:#fff;font-weight:700;font-size:.81rem;font-variant-numeric:tabular-nums;transition:border-color .15s ease,box-shadow .15s ease}.companion-table input[type=number]:focus,.table-num-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px #14487824}.soft-subpanel{padding:12px 0;border-bottom:1px solid var(--border-hairline)}.clean-stepper-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}.clean-step-btn{text-align:left;padding:12px 14px;border-radius:10px;background:var(--bg-warm);border:1px solid var(--border-hairline);display:flex;flex-direction:column;gap:4px;transition:all .18s var(--ease-spring)}.clean-step-btn:hover{border-color:var(--accent)}.clean-step-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.lightbox-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#121a24d6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;flex-direction:column;padding:clamp(12px,2vw,24px)}.lightbox-shell{width:100%;max-width:1680px;height:100%;margin:0 auto;background:#fff;border-radius:20px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 28px 64px #00000059}.lightbox-topbar{padding:14px 24px;border-bottom:1px solid var(--border-hairline);background:var(--bg-warm);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.lightbox-body{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 380px}.lightbox-canvas-scroll{overflow:auto;background:#f6f4ef;display:flex;align-items:flex-start;justify-content:center;padding:28px}.lightbox-node-panel{border-left:1px solid var(--border-hairline);background:#fff;padding:22px;overflow-y:auto;display:flex;flex-direction:column;gap:14px}.drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#18222c47;z-index:80;display:flex;justify-content:flex-end}.ai-drawer-panel{width:420px;max-width:92vw;height:100vh;background:#fff;border-left:1px solid var(--border-strong);box-shadow:-16px 0 40px #18222c24;display:flex;flex-direction:column;justify-content:space-between}.mobile-bottom-nav{display:none}@media(max-width:1480px){.module-pill-btn{padding:6px 10px;font-size:.8rem}.module-pill-btn svg{display:none}}@media(max-width:1240px){.top-navbar{padding:0 14px}.brand-course-tag{display:none}.module-pill-btn{padding:5px 10px;font-size:.78rem}.user-capsule-switch span,.user-capsule-divider{display:none}}@media(max-width:1120px){.workbench-stage{grid-template-columns:minmax(0,1fr)}.editorial-pane{border-right:none;border-bottom:1px solid var(--border-hairline)}.brand-course-tag{display:none}}@media(max-width:860px){.top-navbar{height:48px;padding:0 10px}.top-navbar-inner{display:flex;justify-content:space-between;gap:6px}.navbar-actions{gap:6px;min-width:0}.brand-identity{gap:6px;flex-shrink:0}.brand-logo-wrap{height:28px;padding:2px 4px}.brand-logo-wrap img{height:22px}.brand-name{font-size:.92rem}.module-nav-pills,.brand-course-tag,.hide-on-mobile{display:none!important}.navbar-actions .ghost-pill-btn,.navbar-actions .primary-action-btn,.navbar-actions .segment-btn,.navbar-actions .user-identity-capsule{padding:4px 7px;height:29px;font-size:.7rem;white-space:nowrap}.workbench-layout{grid-template-columns:minmax(0,1fr);padding-bottom:calc(72px + env(safe-area-inset-bottom,0px))}.workbench-rail{position:sticky;top:48px;z-index:42;height:auto;max-height:none;overflow-y:visible;background:#f2eee6f5;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:8px 12px;gap:6px;border-right:none;border-bottom:1px solid var(--border-hairline)}.rail-module-title{font-size:.95rem}.rail-module-title,.rail-module-desc,.rail-group-label{display:none}.rail-mode-tabs{flex-direction:row;overflow-x:auto;scrollbar-width:none}.rail-mode-btn{flex:1;justify-content:center;padding:6px 8px;font-size:.78rem;white-space:nowrap}.rail-item-list{flex-direction:row;overflow-x:auto;scrollbar-width:none;gap:6px}.rail-item-list::-webkit-scrollbar{display:none}.rail-topic-btn{flex:0 0 auto;padding:6px 11px;border-radius:999px;flex-direction:row;align-items:center;gap:6px}.rail-topic-meta{display:none}.rail-topic-name{font-size:.78rem;white-space:nowrap}.workbench-stage{display:flex;flex-direction:column;min-height:auto}.mobile-pane-switcher{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;margin:10px 12px 0;padding:4px;background:var(--bg-rail);border:1px solid var(--border-hairline);border-radius:10px}.mobile-pane-btn{padding:7px 10px;border-radius:7px;font-size:.8rem;font-weight:700;color:var(--ink-body);text-align:center;white-space:nowrap}.mobile-pane-btn.active{background:#fff;color:var(--accent);box-shadow:0 1px 4px #18222c14}.mobile-pane-hidden{display:none!important}.editorial-pane{padding:14px 12px;gap:14px;border-right:none}.editorial-title{font-size:1.22rem}.atlas-pane{padding:14px 12px;gap:14px}.origin-figure-showcase{min-height:auto}.origin-figure-showcase img{height:auto;min-height:0;max-height:62vh}.workbench-stage-single{padding:16px 14px;gap:14px}.drawer-backdrop{align-items:flex-end}.lightbox-backdrop{padding:8px}.lightbox-body{grid-template-columns:minmax(0,1fr);grid-template-rows:1fr auto}.lightbox-node-panel{border-left:none;border-top:1px solid var(--border-hairline);max-height:36vh;padding:14px}.ai-drawer-panel{width:100%;max-width:100vw;height:82vh;border-left:none;border-top:1px solid var(--border-strong);border-radius:20px 20px 0 0}.mobile-bottom-nav{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);position:fixed;left:0;right:0;bottom:0;z-index:60;background:#fffffff5;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--border-strong);padding:5px 4px calc(5px + env(safe-area-inset-bottom,0px))}input:not([type=range]):not([type=checkbox]):not([type=radio]):not([type=file]),select,textarea{font-size:16px}.mobile-nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:5px 2px;border-radius:8px;font-size:.67rem;font-weight:600;color:var(--ink-muted);white-space:nowrap}.mobile-nav-item.active{color:var(--accent);background:var(--bg-accent-soft);font-weight:700}}.distinction-compare-grid{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:12px;align-items:stretch}@media(max-width:768px){.distinction-compare-grid{grid-template-columns:minmax(0,1fr);gap:8px}}@media(min-width:861px){.ereader-locked-stage{height:calc(100vh - 58px);max-height:calc(100vh - 58px);min-height:calc(100vh - 58px);overflow:hidden;overscroll-behavior:none}}.ereader-stage-immersive{display:grid;grid-template-columns:minmax(0,1fr);height:calc(100vh - 58px);overflow:hidden}.ereader-paper-warm{--reader-bg: #FAF6EE;--reader-page: #FFFDF8;--reader-ink: #1F262E;--reader-muted: #5E6873;--reader-border: #E5DEC9;--reader-mark: rgba(245, 180, 35, .24);--reader-mark-border: #D99B16}.ereader-paper-sage{--reader-bg: #E6EFE8;--reader-page: #F2F7F3;--reader-ink: #1C2B22;--reader-muted: #4E6657;--reader-border: #C8DCCD;--reader-mark: rgba(45, 106, 79, .16);--reader-mark-border: #2D6A4F}.ereader-paper-pure{--reader-bg: #F3F5F8;--reader-page: #FFFFFF;--reader-ink: #18222C;--reader-muted: #566370;--reader-border: #E2E7EE;--reader-mark: rgba(19, 77, 140, .12);--reader-mark-border: #134D8C}.ereader-paper-night{--reader-bg: #12171D;--reader-page: #1A2129;--reader-ink: #E2E8F0;--reader-muted: #94A3B8;--reader-border: #2D3846;--reader-mark: rgba(56, 189, 248, .2);--reader-mark-border: #38BDF8}.ereader-font-serif{font-family:Songti SC,STSong,"Noto Serif SC","Source Han Serif SC",SimSun,Georgia,serif}.ereader-font-sans{font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,sans-serif}.ereader-para{text-indent:2em;line-height:1.92;letter-spacing:.02em;margin:.65em 0;text-align:justify;color:var(--reader-ink)}.ereader-key-sentence{background:var(--reader-mark);text-decoration:underline;text-decoration-color:var(--reader-mark-border);text-underline-offset:4px;text-decoration-thickness:1.5px;padding:1px 2px}.ereader-inline-figure{margin:18px 0;padding:14px 0;border-top:1px solid var(--reader-border);border-bottom:1px solid var(--reader-border);background:transparent}.show-on-mobile-only{display:none!important}@media(max-width:860px){.workbench-layout,.workbench-rail,.rail-section,.workbench-stage,.center-stage-pane,.kb-studio-grid,.kb-source-card,.editorial-pane,.atlas-pane,.ereader-book-sheet,.ereader-book-inner{min-width:0!important;max-width:100%!important;box-sizing:border-box!important}.show-on-mobile-only{display:inline-flex!important}.ereader-editorial-pane{padding:0!important;gap:0!important;height:auto!important;max-height:none!important;overflow:visible!important;max-width:100vw}.ereader-toolbar-bar{border-radius:0!important;border-left:none!important;border-right:none!important;border-top:none!important;padding:7px 12px!important;position:sticky;top:90px;z-index:35}.ereader-settings-row{display:none!important}.ereader-settings-row.is-open{display:flex!important;width:100%;padding-top:6px;margin-top:4px;border-top:1px dashed var(--reader-border);justify-content:space-between}.ereader-book-sheet{border-radius:0!important;border:none!important;box-shadow:none!important;overflow:visible!important}.ereader-book-inner{padding:14px 16px 32px!important}.ereader-running-header{padding:6px 16px!important;font-size:.7rem!important}.ereader-chapter-title{font-size:1.32rem!important}}@keyframes kbFadeSlideUp{0%{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes kbPulseRing{0%{box-shadow:0 0 #134d8c6b}70%{box-shadow:0 0 0 10px #134d8c00}to{box-shadow:0 0 #134d8c00}}@keyframes kbShimmerBar{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes kbCursorBlink{0%,49%{opacity:1}50%,to{opacity:.15}}@keyframes kbLiveDot{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.35);opacity:.65}}.kb-live-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;animation:kbLiveDot 2.2s ease-in-out infinite}.module-pill-btn.active .kb-live-dot{background:#fff}.kb-studio-grid{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(360px,.92fr);gap:20px;align-items:start}@media(max-width:1080px){.kb-studio-grid{grid-template-columns:minmax(0,1fr)}}.kb-stage-stepper{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}@media(max-width:780px){.kb-stage-stepper{grid-template-columns:repeat(2,minmax(0,1fr))}}.kb-step-node{padding:11px 13px;border-radius:12px;background:var(--bg-warm);border:1px solid var(--border-hairline);transition:all .32s var(--ease-spring);position:relative;overflow:hidden}.kb-step-node.is-active{background:var(--bg-accent-soft);border-color:var(--accent);transform:translateY(-2px);box-shadow:0 8px 20px -8px #134d8c38}.kb-step-node.is-loading:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:linear-gradient(90deg,transparent,var(--accent),transparent);background-size:200% 100%;animation:kbShimmerBar 1.4s linear infinite}.kb-citation-badge{display:inline-flex;align-items:center;justify-content:center;margin:0 3px;padding:1px 7px;height:20px;border-radius:999px;font-size:.73rem;font-weight:800;background:var(--bg-accent-soft);color:var(--accent);border:1px solid rgba(19,77,140,.32);cursor:pointer;vertical-align:baseline;transition:all .2s var(--ease-spring)}.kb-citation-badge:hover,.kb-citation-badge.is-focused{background:var(--accent);color:#fff;border-color:var(--accent);transform:translateY(-2px) scale(1.08);box-shadow:0 4px 10px #134d8c47}.kb-source-card{border-radius:14px;background:#fff;border:1px solid var(--border-hairline);padding:14px 16px;transition:all .28s var(--ease-spring);animation:kbFadeSlideUp .38s var(--ease-spring) both}.kb-source-card:hover{border-color:var(--border-strong);transform:translateY(-2px);box-shadow:var(--shadow-soft)}.kb-source-card.is-highlighted{border:1.5px solid var(--accent);background:linear-gradient(180deg,#f5f9fe,#fff);animation:kbPulseRing 1.1s ease-out;transform:translateY(-2px)}.kb-streaming-cursor{display:inline-block;width:7px;height:15px;margin-left:4px;border-radius:2px;background:var(--accent);vertical-align:text-bottom;animation:kbCursorBlink .9s infinite}.kb-prompt-chip{text-align:left;padding:9px 13px;border-radius:11px;background:var(--bg-warm);border:1px solid var(--border-hairline);font-size:.81rem;color:var(--ink-strong);transition:all .22s var(--ease-spring);display:flex;align-items:center;justify-content:space-between;gap:8px}.kb-prompt-chip:hover{background:var(--bg-accent-soft);border-color:var(--accent);color:var(--accent-deep);transform:translate(3px)}@media(max-width:860px){.companion-card{min-width:0!important;max-width:100%!important;box-sizing:border-box!important;padding:16px 14px!important}.companion-card .accent-pill{white-space:normal!important;word-break:break-word}}.kb-md-root{display:flex;flex-direction:column;gap:11px;font-size:.91rem;color:var(--ink-body);line-height:1.78;word-break:break-word;overflow-wrap:anywhere}.kb-md-p{margin:0;color:var(--ink-body);line-height:1.8}.kb-md-h2,.kb-md-h3{margin:6px 0 2px;padding:8px 13px;border-radius:9px;border-left:3.5px solid var(--accent);background:linear-gradient(90deg,#134d8c13,#134d8c03 92%);font-size:.95rem;font-weight:800;color:var(--accent-deep);letter-spacing:-.01em;line-height:1.45;display:flex;align-items:center;gap:8px}.kb-md-h4{margin:4px 0 0;font-size:.88rem;font-weight:800;color:var(--ink-strong);display:flex;align-items:center;gap:6px}.kb-md-h4:before{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);flex-shrink:0}.kb-md-hr{border:none;height:1px;background:linear-gradient(90deg,var(--border-strong) 0%,var(--border-hairline) 75%,transparent 100%);margin:4px 0}.kb-md-list{display:flex;flex-direction:column;gap:8px;margin:0;padding:0;list-style:none}.kb-md-li-ordered{display:flex;align-items:flex-start;gap:10px;padding:9px 12px;border-radius:10px;background:#ffffffc7;border:1px solid rgba(214,206,190,.65);transition:border-color .18s ease,background .18s ease}.kb-md-li-ordered:hover{background:#fff;border-color:#134d8c47}.kb-md-num-badge{display:inline-flex;align-items:center;justify-content:center;min-width:22px;height:22px;padding:0 5px;margin-top:2px;border-radius:6px;background:var(--bg-accent-soft);border:1px solid rgba(19,77,140,.22);color:var(--accent-deep);font-size:.74rem;font-weight:800;font-variant-numeric:tabular-nums;flex-shrink:0}.kb-md-li-bullet{display:flex;align-items:flex-start;gap:9px;padding:3px 4px}.kb-md-bullet-dot{width:6px;height:6px;margin-top:9px;border-radius:999px;background:var(--accent);flex-shrink:0}.kb-md-li-body{flex:1;min-width:0;line-height:1.76;color:var(--ink-body)}.kb-md-lead-term{color:var(--ink-strong);font-weight:800}.kb-md-sublist{display:flex;flex-direction:column;gap:5px;margin-top:6px;padding-left:8px;border-left:2px solid rgba(19,77,140,.18)}.kb-md-blockquote{margin:2px 0;padding:10px 14px;border-radius:9px;border-left:3px solid var(--accent);background:#134d8c0b;color:var(--ink-secondary);font-size:.86rem}.kb-md-code-inline{padding:1px 6px;border-radius:5px;background:#134d8c14;color:var(--accent-deep);font-size:.82em;font-weight:700}.kb-md-table-wrap{width:100%;overflow:visible;margin:4px 0}table.kb-md-table{width:100%;min-width:0;table-layout:fixed;border-collapse:collapse;border-radius:10px;overflow:hidden;border:1px solid var(--border-strong);background:#fff;font-size:.82rem}table.kb-md-table th,table.kb-md-table td{padding:8px 10px;border:1px solid var(--border-hairline);text-align:left!important;vertical-align:top;white-space:normal!important;word-break:break-word;overflow-wrap:anywhere;line-height:1.6}table.kb-md-table th{background:var(--bg-accent-soft);color:var(--accent-deep);font-weight:800}table.kb-md-table tr:nth-child(2n) td{background:#f7f4ed73}.kb-followup-dock{display:flex;flex-direction:column;gap:12px;padding:16px 18px;border-radius:14px;background:linear-gradient(180deg,#f6f9fd,#fff);border:1px solid rgba(19,77,140,.22);box-shadow:0 4px 16px -6px #134d8c14}.kb-followup-chip-list{display:flex;flex-direction:column;gap:7px}.kb-followup-chip{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 13px;border-radius:10px;background:#fff;border:1px solid var(--border-hairline);text-align:left;font-size:.82rem;color:var(--ink-strong);transition:all .2s var(--ease-spring)}.kb-followup-chip:hover{background:var(--bg-accent-soft);border-color:var(--accent);color:var(--accent-deep);transform:translate(3px)}.kb-followup-tag{display:inline-flex;align-items:center;padding:2px 7px;border-radius:6px;background:var(--bg-accent-soft);color:var(--accent-deep);font-size:.7rem;font-weight:800;flex-shrink:0}.kb-followup-input-shell{display:flex;align-items:center;gap:8px;padding:5px 6px 5px 12px;border-radius:12px;background:#fff;border:1.5px solid rgba(19,77,140,.35);box-shadow:0 2px 10px -4px #134d8c1f;transition:border-color .18s ease,box-shadow .18s ease}.kb-followup-input-shell:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #134d8c1f}@media(max-width:640px){.kb-followup-input-shell{flex-wrap:wrap;padding:8px 10px}}@media(prefers-reduced-motion:reduce){.kb-source-card,.kb-live-dot,.kb-streaming-cursor,.kb-step-node.is-loading:after{animation:none!important}}