/* =========================================================
   WorkCanvas — Product White + Cobalt (2027)
   Loaded after theme-white.css / theme-ac.css.
   Keeps every animation hook; replaces the surface language.
   ========================================================= */

:root {
  --ink: #1d1d1f;
  --ink-2: #424245;
  --muted: #6e6e73;
  --faint: #86868b;
  --paper: #ffffff;
  --sheet: #f5f5f7;
  --white: #ffffff;
  --line: #e5e5ea;
  --line-soft: #f0f0f2;
  --accent: #1f3bff;
  --accent-ink: #0b22c7;
  --accent-soft: rgba(31, 59, 255, .08);
  --blue: #1f3bff;
  --coral: #1f3bff;
  --pink: #1f3bff;
  --violet: #1f3bff;
  --green: #34c759;
  --teal: #30b0c7;
  --amber: #ff9f0a;
  --font-display: "Helvetica Neue", "Avenir Next", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --font-mono: "SF Mono", "SFMono-Regular", "Menlo", ui-monospace, monospace;
}

html, body { background: #fff; }
body { color: var(--ink); font-family: var(--font-sans); font-size: 16.5px; letter-spacing: -.012em; }
::selection { background: rgba(31, 59, 255, .2); }
.grain { display: none !important; }

/* header -------------------------------------------------- */
.site-header { background: rgba(255,255,255,.86); border-bottom-color: var(--line); -webkit-backdrop-filter: blur(18px) saturate(1.2); backdrop-filter: blur(18px) saturate(1.2); }
.site-header.is-scrolled { background: rgba(255,255,255,.94); border-bottom-color: var(--line); }
.brand-icon { display: none; }
.brand-mark { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; flex: none; }
.brand-name { font-family: var(--font-display); font-weight: 600; letter-spacing: -.04em; }
.nav-links a { color: var(--muted); font-size: 12px; }
.nav-links a:hover, .nav-links a.is-active { color: var(--ink); }
.nav-links a::after { background: var(--accent); }
.version-pill { border-color: var(--line); color: var(--faint); background: #fff; }
.version-pill i { background: var(--accent); }
.header-actions .btn-small { background: var(--ink); border-color: var(--ink); color: #fff; }
.header-actions .btn-small:hover { background: var(--accent); border-color: var(--accent); }

/* type / buttons ------------------------------------------ */
h2, .ac-wordmark, .ac-tagline, .ac-workflow-copy h2, .vault-copy h2, .download h2 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -.055em;
}
.eyebrow { color: var(--accent); font-family: var(--font-mono); letter-spacing: .12em; }
.eyebrow-dot { background: var(--accent); box-shadow: 0 0 0 3px rgba(31,59,255,.1); }
.btn { border-color: var(--line); background: #fff; color: var(--ink); }
.btn::before { background: var(--accent); }
.btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.text-link { color: var(--ink); border-color: var(--line); }
.text-link:hover { color: var(--accent); border-color: var(--accent); }

/* hero ---------------------------------------------------- */
.ac-hero { background: #fff; padding-top: 20px; }
.ac-stage {
  border: 1px solid var(--line);
  border-radius: 28px;
  background-color: var(--sheet);
  background-image:
    linear-gradient(to right, rgba(31,59,255,.032) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31,59,255,.032) 1px, transparent 1px);
  background-size: 36px 36px;
  box-shadow: 0 30px 80px -58px rgba(0,0,0,.36);
}
.ac-hero-stage { height: 960px; }
.ac-hero-copy { top: 56px; width: 700px; }
.ac-wordmark {
  margin: 24px 0 0;
  color: var(--ink);
  font-size: 82px;
  line-height: .98;
  letter-spacing: -.075em;
}
.ac-wordmark .ac-brand-line { font-family: var(--font-display); font-weight: 600; letter-spacing: -.065em; }
.ac-wordmark .ac-cn { font-family: var(--font-sans); font-weight: 700; letter-spacing: -.07em; }
.ac-wordmark em { font-style: normal; color: var(--accent); }
.ac-tagline {
  margin: 18px 0 0;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -.04em;
}
.ac-tagline span { color: var(--accent); }
.ac-lede { color: var(--muted); font-size: 15px; line-height: 1.72; }
.ac-hero-side { top: 64px; width: 350px; }
.ac-hero-side .ac-lede { color: var(--muted); }
.ac-hero-meta { color: var(--faint); }
.ac-hero-meta i { background: var(--line); }
.ac-node-frame {
  top: 410px;
  height: 520px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255,255,255,.92);
  box-shadow: 0 24px 60px -54px rgba(0,0,0,.3);
}
.ac-canvas-edge { stroke: var(--accent); }
.ac-canvas-edge.is-related { opacity: .95; }
.ac-canvas-group { border-color: rgba(31, 59, 255, .55); background: rgba(31, 59, 255, .04); }
.ac-canvas-group-label { background: #fff; color: var(--accent); }
.ac-svg-node:hover::after { border-color: rgba(31, 59, 255, .4); }
.ac-svg-node.is-dragging::after { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(31, 59, 255, .12); }

/* workflow ------------------------------------------------ */
.ac-workflow { background: var(--sheet); }
.ac-workflow-copy h2 { color: var(--ink); font-size: 44px; }
.ac-workflow-lede { color: var(--muted); }
.ac-worktab { border-color: var(--line); background: #fff; color: var(--muted); }
.ac-worktab.is-active { border-color: var(--ink); background: var(--ink); color: #fff; }
.ac-worktab span { color: var(--faint); }
.ac-step h3 { color: var(--ink); }
.ac-step p { color: var(--muted); }
.ac-step-index { color: var(--faint); }
.ac-step.is-active .ac-step-index { color: var(--accent); }
.ac-workflow-progress { background: var(--line); }
.ac-workflow-progress span { background: var(--accent); }
.ac-workflow-stage { background: transparent; }
.ac-workflow-view { background: #fff; border: 1px solid var(--line); border-radius: 22px; box-shadow: 0 24px 60px -52px rgba(0,0,0,.28); }
.ac-flow-canvas .ac-canvas-group { border-color: rgba(31,59,255,.55); background: rgba(31,59,255,.04); }
.ac-canvas-group-label { background: #fff; }

/* search -------------------------------------------------- */
.search-section { background: #fff; }
.search-section h2, .features h2, .vault h2, .details h2 { color: var(--ink); }
.section-lede { color: var(--muted); }
.search-fields span { border-color: var(--line); background: var(--sheet); color: var(--ink-2); }
.floating-key { border-color: var(--line); background: #fff; }
.search-visual { background: var(--sheet); border-color: var(--line); border-radius: 24px; }
.find-stage { background: #fff; border-color: var(--line); border-radius: 22px; }
.find-caption, .find-count { color: var(--muted); }
.find-query { color: var(--ink); }
.find-query::after { background: var(--accent); }
.find-hit { border-color: var(--accent); }
.find-world .ac-canvas-edge { stroke: var(--accent); }

/* features ------------------------------------------------ */
.features { background: #fff; }
.features .section-head { border-bottom-color: var(--line); }
.bento { gap: 16px; }
.bento-card { border-color: var(--line); background: #fff; border-radius: 18px; box-shadow: none; }
.bento-card:hover { border-color: rgba(31,59,255,.35); box-shadow: 0 24px 50px -44px rgba(0,0,0,.3); }
.card-tag { color: var(--accent); font-family: var(--font-mono); }
.bento-card h3 { color: var(--ink); }
.bento-card p { color: var(--muted); }
.node-visual { background: var(--sheet); border-radius: 14px; }
.relations { background: var(--ink); border-radius: 20px; }
.relations-copy h3 { color: #fff; }
.relations-copy p { color: rgba(255,255,255,.6); }
.rel-group { border-color: rgba(31,59,255,.55); background: rgba(31,59,255,.12); }
.rel-node { background: #fff; }
.rel-live-label { color: var(--accent); }

/* vault --------------------------------------------------- */
.vault { background: var(--sheet); }
.vault-board { border-color: var(--line); background: #fff; border-radius: 18px; }
.vault-board-head { color: var(--faint); }
.vault-board-node { border-color: var(--line); background: #fff; }
.vault-panel { border-color: var(--line); background: #fff; border-radius: 16px; }
.vault-row:hover { background: var(--sheet); }
.vault-row.is-active { background: var(--accent-soft); }
.vault-count { background: var(--sheet); }
.vault-check { background: var(--accent); }
.vault-foot { background: #fff; border-top-color: var(--line); }
.vault-points li::before { background: var(--accent); }

/* local (dark -> near black / cobalt details) ------------ */
.local { background-color: var(--ink); }
.local-card { border-color: #34343a; background: #222226; }
.local-card:hover { border-color: #4a4a52; background: #26262b; }
.package-row { border-color: #34343a; background: #26262b; }
.autosave-options { border-color: #34343a; background: #26262b; }
.local code { border-color: #34343a; background: #26262b; color: #d2d2d7; }
.package-title .icon { color: #8ea7ff; }

/* personalize / shortcuts / details ---------------------- */
.personalize { background: #fff; }
.compare { background: var(--sheet); }
.control-block, .lang-sample { background: var(--sheet); border-color: var(--line); }
.shortcuts { background-color: var(--sheet); background-image: none; }
.details { background: #fff; }
.detail-window { background: var(--sheet); border-color: var(--line); }
.detail-window-bar { background: #fff; border-bottom-color: var(--line); }

/* download (cobalt moment) -------------------------------- */
.download {
  background: var(--accent);
  border-top: 0;
  color: #fff;
}
.download .eyebrow { color: rgba(255,255,255,.72); }
.download .eyebrow .eyebrow-dot { background: #fff; box-shadow: 0 0 0 3px rgba(255,255,255,.18); }
.download h2 { color: #fff; font-size: 64px; }
.download-meta { color: rgba(255,255,255,.72); }
.download .btn-download { background: #fff; border-color: #fff; color: var(--ink); }
.download .btn-download:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.download .btn-download .btn-sub { color: rgba(29,29,31,.55); border-left-color: rgba(29,29,31,.18); }
.download .btn-download:hover .btn-sub { color: rgba(255,255,255,.65); border-left-color: rgba(255,255,255,.25); }
.install-line { border-color: rgba(255,255,255,.24); background: rgba(255,255,255,.12); color: rgba(255,255,255,.78); }
.download-icon-wrap { border-color: rgba(255,255,255,.24); background: #fff; border-radius: 22px; box-shadow: 0 18px 50px -30px rgba(0,0,0,.35); }
.download-icon-wrap::before { background: var(--accent); box-shadow: 0 0 0 3px rgba(31,59,255,.16); }

/* footer -------------------------------------------------- */
.footer { background: #fff; border-top-color: var(--line); }
.footer p, .footer a { color: var(--muted); }
.footer .footer-heading { color: var(--faint); }
.footer a:hover { color: var(--ink); }
.footer-base { border-top-color: var(--line); color: var(--faint); }

/* mobile / responsive adjustments ------------------------- */
@media (max-width: 1280px) {
  .ac-wordmark { font-size: 72px; }
  .ac-hero-copy { width: 620px; }
  .ac-hero-side { width: 320px; }
}

@media (max-width: 1080px) {
  .ac-hero-stage { height: 900px; }
  .ac-hero-copy { top: 42px; width: 560px; }
  .ac-wordmark { font-size: 62px; }
  .ac-tagline { font-size: 24px; }
  .ac-hero-side { top: 48px; width: 300px; }
  .ac-node-frame { top: 370px; height: 500px; }
}

@media (max-width: 860px) {
  body { min-width: 0; }
  .ac-hero-stage { width: 100%; height: auto; min-height: 760px; }
  .ac-stage { width: 100%; }
  .ac-hero-copy { position: relative; top: auto; left: auto; width: auto; padding: 34px 28px 0; }
  .ac-hero-side { position: relative; top: auto; right: auto; width: auto; padding: 20px 28px 0; }
  .ac-wordmark { font-size: 54px; }
  .ac-tagline { font-size: 22px; }
  .ac-node-frame { position: relative; top: auto; right: auto; left: auto; margin: 24px 20px 40px; height: 480px; }
  .download h2 { font-size: 42px; }
  .download-inner { grid-template-columns: 1fr; gap: 30px; }
  .download-icon-wrap { grid-column: 1; grid-row: auto; justify-self: start; width: 200px; height: 210px; }
  .download .eyebrow, .download h2, .download-meta, .download-actions, .install-line { grid-column: 1; }
}

/* vault tone overrides */
.vault-demo[data-tone] .vault-board {
  background: var(--sheet);
}
.vault-demo[data-tone] .vault-board-node::before,
.vault-board-node::before {
  background: var(--accent);
}
.vault-board-lines { stroke: var(--accent); opacity: .28; }
.vault-board-head span:first-child::before { background: var(--accent); }
.vault-thumb { filter: grayscale(1); opacity: .78; }

/* local mini node */
.stripe-cobalt { background: var(--accent); }
.type-cobalt { color: var(--accent); }
.local-mini-node { border-color: #34343a; background: #fff; }
.local-mini-node .mini-title { color: var(--ink); }
.local-mini-node .mini-path { color: var(--faint); }


/* keep the download motion: drifting nodes + a quiet white glow */
.download-sky, .download-grid, .download-orb, .download-node { display: block; }
.download-grid {
  background-image:
    linear-gradient(to right, rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.055) 1px, transparent 1px);
}
.download-orb {
  opacity: .14;
  background: radial-gradient(circle at 50% 26%, #ffffff 0%, rgba(255,255,255,0) 62%);
  box-shadow: none;
}
.download-node { background: #fff; opacity: .48; }
.download-node.dn-2 { background: #c7d0ff; }
.download-node.dn-3 { background: #8ea7ff; }

/* =========================================================
   Geometry pass — follow the campaign book: square editorial
   surfaces, product cards are the only rounded objects.
   ========================================================= */

.ac-stage {
  border-radius: 0;
  box-shadow: none;
}
.ac-node-frame {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.ac-workflow-view {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.search-visual {
  border-radius: 0;
  background: transparent;
}
.find-stage {
  border: 1px solid var(--line);
  border-radius: 0;
  background: #fff;
  box-shadow: none;
}
.bento {
  gap: 0 28px;
}
.bento-card {
  border: 0;
  border-top: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  padding: 24px 0 34px;
  box-shadow: none;
}
.bento-card:hover {
  border-color: var(--line);
  box-shadow: none;
}
.node-visual {
  border-radius: 0;
  background: transparent;
}
.vault-board {
  border-radius: 0;
  box-shadow: none;
}
.vault-panel {
  border-radius: 6px;
  box-shadow: 0 18px 45px -32px rgba(0,0,0,.22);
}
.vault-board-node { border-radius: 2px; }
.vault-row { border-radius: 2px; }
.local-card { border-radius: 0; }
.local-mini-node { border-radius: 8px; }
.detail-window {
  border-radius: 0;
  box-shadow: none;
}
.detail-window-bar { border-radius: 0; }
.download-icon-wrap {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  padding: 0;
  width: auto;
  height: auto;
}
.download-icon-wrap::before { display: none; }
.download-icon-wrap img {
  width: 180px;
  height: 180px;
  border-radius: 40px;
  box-shadow: 0 24px 60px -28px rgba(0,0,0,.35);
}
.ac-worktab { border-radius: 0; }
.version-pill { border-radius: 0; }
.btn, .btn-small, .btn-primary, .btn-download { border-radius: 2px; }
.text-link { border-radius: 0; }
.ac-hero-meta i { border-radius: 50%; }

/* Slightly larger editorial headings, closer to the campaign book. */
.section-head h2 { font-size: 54px; line-height: 1.06; }
.section-lede { font-size: 14.5px; }
.ac-workflow-copy h2 { font-size: 48px; line-height: 1.1; }
.download h2 { font-size: 72px; }
.card-image, .card-note { align-items: start; }

/* 下载暂未开放：白色实心按钮改为描边静默态。 */
.download .btn-download.is-coming-soon,
.download .btn-download.is-coming-soon:hover {
  background: transparent;
  border-style: dashed;
  border-color: rgba(255, 255, 255, .4);
  color: rgba(255, 255, 255, .86);
}

.download .btn-download.is-coming-soon .btn-sub {
  color: rgba(255, 255, 255, .6);
  border-left-color: rgba(255, 255, 255, .24);
}