:root {
  --bg: #070a17;
  --panel: rgba(10, 15, 35, .82);
  --panel-strong: rgba(15, 22, 48, .95);
  --line: rgba(160, 182, 255, .14);
  --line-strong: rgba(160, 182, 255, .28);
  --text: #edf2ff;
  --muted: #a0acce;
  --dim: #67739b;
  --accent: #6fe3e8;
  --blue: #5b86ff;
  --violet: #bb8cff;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --display: "Space Grotesk", "Noto Sans SC", sans-serif;
  --serif: "Noto Serif SC", "Songti SC", serif;
  --ease: cubic-bezier(.22, .61, .36, 1);
}
* { box-sizing: border-box; }
*[hidden] { display: none !important; }
html, body { min-height: 100%; }
body { margin: 0; overflow-x: hidden; overflow-y: auto; color: var(--text); font-family: var(--sans); font-size: 14px; background: radial-gradient(circle at 8% -4%, rgba(91,134,255,.18), transparent 28%), radial-gradient(circle at 88% 100%, rgba(111,227,232,.08), transparent 28%), var(--bg); -webkit-font-smoothing: antialiased; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { border: 0; }
a { color: inherit; text-decoration: none; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.app-shell { min-height: 100dvh; }
.app-topbar { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 0 28px; border-bottom: 1px solid var(--line); background: rgba(6,9,22,.78); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.app-brand, .topbar-actions, .workspace-actions, .palette-item, .topbar-center { display: flex; align-items: center; }
.app-brand { gap: 11px; min-width: 220px; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; color: var(--accent); border: 1px solid rgba(111,227,232,.25); border-radius: 10px; background: rgba(111,227,232,.08); box-shadow: 0 0 24px -8px rgba(111,227,232,.8); }
.brand-mark svg { width: 22px; height: 22px; }
.app-brand strong { display: block; font-family: var(--serif); font-size: 18px; line-height: 1.15; }
.app-brand small { display: block; margin-top: 3px; color: var(--dim); font: 10px var(--display); letter-spacing: .06em; }
.topbar-center { gap: 8px; color: var(--dim); font: 11px var(--display); }
.status-dot { width: 7px; height: 7px; display: inline-block; flex: none; border-radius: 50%; background: #7cf2c0; box-shadow: 0 0 11px rgba(124,242,192,.9); }
.status-dot.is-running { background: var(--accent); box-shadow: 0 0 11px rgba(111,227,232,.9); }
.topbar-actions { gap: 14px; }
.icon-button, .new-flow-button { display: grid; place-items: center; cursor: pointer; color: var(--muted); border: 1px solid var(--line); border-radius: 9px; background: transparent; transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease), transform .25s var(--ease); }
.icon-button { width: 36px; height: 36px; }
.icon-button:hover, .new-flow-button:hover { color: var(--accent); border-color: rgba(111,227,232,.42); background: rgba(111,227,232,.08); }
.icon-button svg, .new-flow-button svg { width: 18px; height: 18px; }
.topbar-home { color: var(--muted); font-size: 13px; }
.topbar-home:hover { color: var(--accent); }
.flow-layout { min-height: calc(100dvh - 72px); display: grid; grid-template-columns: 276px minmax(0, 1fr) 280px; }
.flow-sidebar, .inspector-panel { min-width: 0; background: rgba(8,12,29,.72); }
.flow-sidebar { display: flex; flex-direction: column; padding: 24px 16px 16px; border-right: 1px solid var(--line); }
.inspector-panel { display: flex; flex-direction: column; padding: 29px 21px 19px; border-left: 1px solid var(--line); }
.sidebar-heading, .inspector-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font: 10px var(--display); letter-spacing: .18em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { margin-bottom: 0; font-family: var(--serif); font-weight: 600; }
.sidebar-heading h1, .inspector-heading h2 { font-size: 20px; }
.new-flow-button { width: 36px; height: 36px; color: var(--accent); border-color: rgba(111,227,232,.3); background: rgba(111,227,232,.08); }
.flow-name-wrap { margin-top: 25px; padding: 13px 12px; border: 1px solid var(--line); border-radius: 8px; background: rgba(255,255,255,.035); }
.flow-name-wrap label { display: block; margin-bottom: 7px; color: var(--dim); font: 10px var(--display); letter-spacing: .1em; }
.flow-name-wrap input { width: 100%; padding: 0; border: 0; outline: 0; color: var(--text); background: transparent; font-size: 13px; }
.saved-flow-list { margin-top: 16px; }
.saved-flow-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px; cursor: pointer; text-align: left; color: var(--muted); border: 1px solid transparent; border-radius: 8px; background: transparent; }
.saved-flow-item:hover, .saved-flow-item.is-active { color: var(--text); border-color: rgba(111,227,232,.17); background: linear-gradient(90deg, rgba(91,134,255,.16), rgba(111,227,232,.04)); }
.saved-flow-item span { width: 6px; height: 6px; border-radius: 50%; background: var(--dim); }
.saved-flow-item.is-active span { background: var(--accent); box-shadow: 0 0 10px rgba(111,227,232,.8); }
.saved-flow-item b { overflow: hidden; flex: 1; font-size: 12px; font-weight: 500; text-overflow: ellipsis; white-space: nowrap; }
.saved-flow-item small { color: var(--dim); font: 10px var(--display); }
.palette { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); }
.palette-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.palette-heading .eyebrow { margin: 0; }
.palette-heading span { color: var(--dim); font-size: 10px; }
.palette-item { width: 100%; gap: 9px; padding: 9px 7px; cursor: pointer; text-align: left; color: var(--muted); border: 1px solid transparent; border-radius: 7px; background: transparent; }
.palette-item:hover { color: var(--text); border-color: var(--line); background: rgba(255,255,255,.035); }
.palette-item > span:nth-child(2) { min-width: 0; flex: 1; }
.palette-item b, .palette-item small { display: block; }
.palette-item b { font-size: 12px; font-weight: 500; }
.palette-item small { margin-top: 2px; color: var(--dim); font-size: 10px; }
.palette-item i { color: var(--dim); font: 18px var(--display); font-style: normal; }
.palette-icon { width: 28px; height: 28px; display: grid; place-items: center; flex: none; border: 1px solid currentColor; border-radius: 7px; font: 10px var(--display); }
.agent-icon { color: var(--accent); }.tool-icon { color: var(--blue); }.router-icon { color: var(--violet); }.review-icon { color: #f3c977; }
.sidebar-note { display: flex; gap: 8px; margin-top: 15px; padding: 12px 2px 0; color: var(--dim); font-size: 10px; line-height: 1.7; }
.sidebar-note span { color: var(--accent); font-size: 17px; }.sidebar-note p { margin: 0; }
.flow-workspace { min-width: 0; display: flex; flex-direction: column; background: rgba(11,16,37,.36); }
.workspace-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 22px; min-height: 115px; padding: 25px 32px 21px; border-bottom: 1px solid var(--line); }
.workspace-heading h2 { font-size: 26px; }.workspace-heading > div:first-child > p:last-child { margin: 9px 0 0; color: var(--muted); font-size: 12px; }
.workspace-actions { gap: 15px; }
.run-state { display: inline-flex; align-items: center; gap: 7px; color: var(--dim); font: 11px var(--display); white-space: nowrap; }.run-state i { width: 6px; height: 6px; border-radius: 50%; background: var(--dim); }.run-state.is-running i { background: var(--accent); box-shadow: 0 0 10px var(--accent); }.run-state.is-success { color: #7cf2c0; }.run-state.is-success i { background: #7cf2c0; }
.run-button { display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px; cursor: pointer; color: #061018; border-radius: 8px; background: linear-gradient(135deg,var(--blue),var(--accent)); font-size: 12px; font-weight: 700; box-shadow: 0 0 22px -8px rgba(111,227,232,.8); transition: transform .25s var(--ease), box-shadow .25s var(--ease), opacity .25s var(--ease); }.run-button:hover { transform: translateY(-1px); box-shadow: 0 0 30px -6px rgba(111,227,232,.9); }.run-button:disabled { cursor: wait; opacity: .55; transform: none; }.run-symbol { font-size: 10px; }
.canvas-shell { position: relative; min-height: 400px; flex: 1; margin: 22px 24px 24px; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background-color: rgba(5,9,25,.58); background-image: linear-gradient(rgba(146,168,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(146,168,255,.045) 1px, transparent 1px); background-size: 28px 28px; }
.canvas-toolbar { position: absolute; z-index: 2; inset: 0 0 auto; display: flex; justify-content: space-between; padding: 13px 15px; color: var(--dim); border-bottom: 1px solid rgba(160,182,255,.1); background: rgba(5,9,25,.74); font: 10px var(--display); }.canvas-toolbar b { color: var(--accent); font-weight: 500; }
.flow-canvas { position: absolute; inset: 55px 0 0; overflow-y: auto; padding: 42px 14%; scrollbar-width: thin; }
.flow-node-wrap { position: relative; display: grid; place-items: center; }.flow-node-wrap + .flow-node-wrap { margin-top: 37px; }.flow-node-wrap + .flow-node-wrap::before { content: ""; position: absolute; top: -37px; width: 1px; height: 37px; background: linear-gradient(var(--accent), rgba(111,227,232,.16)); }
.flow-node { position: relative; display: grid; grid-template-columns: 38px minmax(0, 1fr) auto; align-items: center; gap: 11px; width: min(490px, 100%); min-height: 86px; padding: 13px 14px 13px 13px; cursor: pointer; text-align: left; border: 1px solid var(--line-strong); border-radius: 10px; background: linear-gradient(135deg, rgba(255,255,255,.075), rgba(255,255,255,.025)), rgba(13,19,43,.88); box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 18px 35px -26px rgba(0,0,0,.8); transition: border-color .25s var(--ease), transform .25s var(--ease), background .25s var(--ease), opacity .25s var(--ease); }.flow-node:hover, .flow-node.is-selected { border-color: rgba(111,227,232,.58); transform: translateY(-2px); }.flow-node.is-running { border-color: var(--accent); box-shadow: 0 0 0 1px rgba(111,227,232,.1), 0 0 30px -10px rgba(111,227,232,.85); }.flow-node.is-complete { border-color: rgba(124,242,192,.45); }.flow-node.is-disabled { opacity: .45; }
.node-icon { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 9px; font: 11px var(--display); }.node-icon.agent { color: var(--accent); background: rgba(111,227,232,.1); }.node-icon.tool { color: var(--blue); background: rgba(91,134,255,.12); }.node-icon.router { color: var(--violet); background: rgba(187,140,255,.12); }.node-icon.review { color: #f3c977; background: rgba(243,201,119,.1); }
.node-copy { min-width: 0; }.node-copy b { display: block; overflow: hidden; color: var(--text); font-size: 13px; font-weight: 500; text-overflow: ellipsis; white-space: nowrap; }.node-copy small { display: block; overflow: hidden; margin-top: 6px; color: var(--dim); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.node-status { display: inline-flex; align-items: center; gap: 6px; color: var(--dim); font: 10px var(--display); white-space: nowrap; }.node-status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }.is-running .node-status { color: var(--accent); }.is-complete .node-status { color: #7cf2c0; }.is-disabled .node-status { color: var(--dim); }
.canvas-empty { position: absolute; inset: 55px 0 0; display: grid; place-content: center; text-align: center; }.empty-orbit { width: 54px; height: 54px; display: grid; place-items: center; margin: 0 auto 16px; color: var(--accent); border: 1px solid rgba(111,227,232,.3); border-radius: 50%; background: rgba(111,227,232,.08); font: 24px var(--display); }.empty-orbit.small { width: 42px; height: 42px; font-size: 17px; }.canvas-empty h3 { font-size: 19px; }.canvas-empty p, .inspector-empty p { margin: 8px 0 0; color: var(--dim); font-size: 12px; line-height: 1.7; }
.inspector-index { color: var(--accent); font: 14px var(--display); }.inspector-empty { display: grid; place-content: center; flex: 1; text-align: center; }.node-form { margin-top: 26px; }.selected-node-preview { display: flex; align-items: center; gap: 9px; margin-bottom: 22px; padding-bottom: 17px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px; }.selected-node-preview .node-icon { width: 32px; height: 32px; }
.node-form label:not(.toggle-row) { display: grid; gap: 7px; margin-top: 17px; color: var(--muted); font-size: 11px; }.node-form input, .node-form textarea, .node-form select { width: 100%; outline: 0; color: var(--text); border: 1px solid var(--line); border-radius: 7px; background: rgba(255,255,255,.04); }.node-form input, .node-form select { height: 38px; padding: 0 10px; }.node-form textarea { min-height: 94px; padding: 9px 10px; resize: vertical; line-height: 1.6; }.node-form input:focus, .node-form textarea:focus, .node-form select:focus { border-color: rgba(111,227,232,.58); box-shadow: 0 0 0 3px rgba(111,227,232,.08); }.node-form option { color: #10172f; }
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }.toggle-row span { min-width: 0; }.toggle-row b, .toggle-row small { display: block; }.toggle-row b { color: var(--muted); font-size: 12px; font-weight: 500; }.toggle-row small { margin-top: 3px; color: var(--dim); font-size: 10px; }.toggle-row input { position: absolute; opacity: 0; pointer-events: none; }.toggle-row i { position: relative; width: 39px; height: 22px; flex: none; cursor: pointer; border-radius: 11px; background: rgba(255,255,255,.12); transition: background .25s var(--ease); }.toggle-row i::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: var(--muted); transition: transform .25s var(--ease), background .25s var(--ease); }.toggle-row input:checked + i { background: rgba(111,227,232,.28); }.toggle-row input:checked + i::after { transform: translateX(17px); background: var(--accent); box-shadow: 0 0 10px rgba(111,227,232,.7); }
.delete-node { width: 100%; margin-top: 27px; padding: 10px; cursor: pointer; color: #ff9aaf; border: 1px solid rgba(255,154,175,.22); border-radius: 7px; background: rgba(255,154,175,.05); font-size: 11px; }.delete-node:hover { border-color: rgba(255,154,175,.5); background: rgba(255,154,175,.1); }
.inspector-footer { display: flex; align-items: center; gap: 8px; padding-top: 16px; color: var(--dim); border-top: 1px solid var(--line); font-size: 10px; }.inspector-footer .status-dot { width: 6px; height: 6px; }
.toast { position: fixed; left: 50%; bottom: 24px; z-index: 4; max-width: min(90vw, 420px); padding: 10px 14px; color: var(--text); border: 1px solid var(--line-strong); border-radius: 7px; background: rgba(13,19,43,.96); box-shadow: 0 14px 40px -20px rgba(0,0,0,.8); opacity: 0; transform: translate(-50%, 10px); transition: opacity .25s var(--ease), transform .25s var(--ease); font-size: 12px; }.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
@media (max-width: 1050px) { .flow-layout { grid-template-columns: 250px minmax(0,1fr); }.inspector-panel { display: none; } }
@media (max-width: 700px) { body { overflow: auto; }.app-topbar { height: 62px; padding: 0 15px; }.app-brand { min-width: 0; }.app-brand small, .topbar-center, .topbar-home { display: none; }.flow-layout { height: calc(100dvh - 62px); display: block; }.flow-sidebar { display: none; }.workspace-heading { min-height: 104px; align-items: flex-start; padding: 20px 16px 17px; }.workspace-heading h2 { font-size: 22px; }.workspace-actions { margin-left: auto; align-self: center; }.run-state { display: none; }.run-button { padding: 9px 11px; font-size: 11px; }.canvas-shell { min-height: calc(100dvh - 168px); margin: 14px 10px 10px; }.flow-canvas { padding: 38px 14px; }.flow-node { grid-template-columns: 34px minmax(0,1fr); }.node-icon { width: 34px; height: 34px; }.node-status { grid-column: 2; margin-top: -5px; }.canvas-toolbar { padding-inline: 11px; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }

/* 修复（2026-09-12）：左侧栏与右侧节点设置面板内容高于视口时没有滚动条，下方内容不可达 */
.flow-sidebar,
.inspector-panel { overflow-y: auto; scrollbar-width: thin; }
.flow-sidebar > *,
.inspector-panel > * { flex-shrink: 0; }

/* 主站风格介绍区（2026-09-12）：文案与版式对齐 index.html 的实验卡片区 */
.page-intro { max-width: 980px; margin: 0 auto; padding: 38px 34px 4px; }
.page-intro .eyebrow { margin-bottom: 10px; }
.intro-title { margin: 0; font-family: var(--serif); font-size: clamp(26px, 3.4vw, 38px); font-weight: 600; line-height: 1.25; }
.intro-title .grad { background: linear-gradient(120deg, #5B86FF, #6FE3E8 55%, #BB8CFF); -webkit-background-clip: text; background-clip: text; color: transparent; }
.intro-tag { margin: 10px 0 0; color: var(--accent, #6FE3E8); font-size: 13px; letter-spacing: .05em; }
.intro-desc { margin: 12px 0 0; max-width: 660px; color: var(--muted, #A9B4D4); font-size: 13px; line-height: 1.9; }
.intro-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 0; padding: 0; list-style: none; }
.intro-chips li { padding: 6px 13px; color: var(--muted, #A9B4D4); border: 1px solid var(--line, rgba(160,182,255,.14)); border-radius: 999px; background: rgba(255,255,255,.035); font-size: 11px; }