/* =========================================================
   KOIC · 白底轻主题 · 编辑/杂志感设计系统
   ========================================================= */
:root {
  --bg: #FAFBFF;
  --surface: #FFFFFF;
  --ink: #0C0E1A;
  --text-1: #0C0E1A;
  --text-2: #565C73;
  --text-3: #8B92AB;

  --cyan: #00B4E8;
  --violet: #6C4DFF;
  --magenta: #FF3D9A;
  --green: #12C98A;

  --grad: linear-gradient(120deg, #00B4E8 0%, #6C4DFF 52%, #FF3D9A 100%);
  --line: rgba(12, 14, 26, 0.12);
  --line-soft: rgba(12, 14, 26, 0.07);
  --shadow-sm: 0 6px 20px rgba(12, 14, 26, 0.06);
  --shadow-md: 0 16px 44px rgba(12, 14, 26, 0.09);

  --radius: 22px;
  --radius-lg: 30px;
  --pill: 999px;

  --font: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --serif: "Noto Serif SC", "Songti SC", "SimSun", Georgia, "Times New Roman", serif;
  --mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;

  --maxw: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-1);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* atmospheric layers */
.ambient { position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(820px 520px at 82% -8%, rgba(0,180,232,0.08), transparent 60%),
    radial-gradient(720px 480px at 8% 18%, rgba(108,77,255,0.06), transparent 60%);
}
.aurora { position: fixed; inset: -25%; z-index: 0; pointer-events: none; filter: blur(80px); opacity: .35; }
.aurora span { position: absolute; border-radius: 50%; mix-blend-mode: multiply; }
.aurora .a1 { width: 40vw; height: 40vw; left: -8vw; top: -6vw; background: radial-gradient(circle, rgba(0,180,232,0.5), transparent 70%); animation: drift1 26s ease-in-out infinite; }
.aurora .a2 { width: 36vw; height: 36vw; right: -6vw; top: 30vh; background: radial-gradient(circle, rgba(108,77,255,0.45), transparent 70%); animation: drift2 30s ease-in-out infinite; }
@keyframes drift1 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(5vw,4vh) scale(1.08)} }
@keyframes drift2 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(-4vw,5vh) scale(1.06)} }
.dots { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: .4;
  background-image: radial-gradient(rgba(12,14,26,0.05) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(circle at 50% 26%, #000, transparent 80%);
  mask-image: radial-gradient(circle at 50% 26%, #000, transparent 80%);
}
.progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 200; background: var(--grad); box-shadow: 0 0 12px rgba(108,77,255,0.5); }

a { color: inherit; text-decoration: none; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- Typography helpers ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: var(--pill);
  background: rgba(0,180,232,0.10); color: var(--cyan);
  font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
}
.eyebrow::before { content:""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

.display { font-size: clamp(46px, 6.2vw, 78px); font-weight: 800; line-height: 1.04; letter-spacing: -0.03em; margin: 0; text-shadow: 0 1px 28px rgba(255,255,255,0.6); }
.display-xl { font-size: clamp(54px, 9vw, 116px); font-weight: 800; line-height: 0.96; letter-spacing: -0.045em; margin: 0; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; background-size: 200% 200%; animation: gradShift 6s ease-in-out infinite; }
@keyframes gradShift { 0%,100%{background-position:0% 50%} 50%{background-position:100% 50%} }

.kicker { font-family: var(--mono); font-size: 13px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--violet); }
.serif { font-family: var(--serif); }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.lede { color: var(--text-2); font-size: 18px; }

/* ---------- Buttons ---------- */
.btn { position: relative; overflow: hidden; display: inline-flex; align-items: center; gap: 9px; padding: 14px 26px; border-radius: var(--pill); font-size: 15px; font-weight: 600; cursor: pointer; border: 1px solid transparent; transition: transform .22s cubic-bezier(.2,.8,.2,1), box-shadow .22s, background .22s, border-color .22s; -webkit-tap-highlight-color: transparent; }
.btn:active { transform: scale(0.96); }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 12px 30px rgba(108,77,255,0.28); }
.btn-primary::after { content:""; position: absolute; top: 0; left: -120%; width: 60%; height: 100%; background: linear-gradient(110deg, transparent, rgba(255,255,255,0.55), transparent); transform: skewX(-20deg); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(108,77,255,0.36); }
.btn-primary:hover::after { animation: shine .85s ease; }
@keyframes shine { to { left: 130%; } }
.btn-ghost { background: var(--surface); color: var(--text-1); border-color: var(--line); box-shadow: var(--shadow-sm); }
.btn-ghost .arrow { transition: transform .22s; }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--violet); color: var(--violet); }
.btn-ghost:hover .arrow { transform: translateX(4px); }

.icon-btn { position: relative; overflow: hidden; width: 42px; height: 42px; border-radius: 50%; display: grid; place-items: center; cursor: pointer; background: rgba(255,255,255,0.7); border: 1px solid var(--line); color: var(--text-1); transition: transform .2s, color .2s, border-color .2s; }
.icon-btn:hover { transform: translateY(-2px); color: var(--violet); border-color: var(--violet); }
.icon-btn:active { transform: scale(0.92); }
.ripple { position: absolute; border-radius: 50%; background: rgba(108,77,255,0.35); transform: scale(0); animation: rip .6s ease-out; pointer-events: none; }
@keyframes rip { to { transform: scale(4); opacity: 0; } }

/* ---------- Nav ---------- */
.nav { position: fixed; top: 18px; left: 50%; transform: translateX(-50%); z-index: 100; width: min(1120px, 94vw); display: flex; align-items: center; gap: 28px; padding: 12px 14px 12px 22px; background: rgba(255,255,255,0.72); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); border: 1px solid rgba(255,255,255,0.85); border-radius: var(--pill); box-shadow: var(--shadow-md); transition: padding .3s, top .3s, box-shadow .3s; }
.nav.shrunk { top: 10px; padding: 8px 12px 8px 18px; box-shadow: var(--shadow-sm); }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 16px; letter-spacing: -0.02em; }
.logo-mark { width: 30px; height: 30px; border-radius: 9px; background: var(--grad); display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 15px; box-shadow: 0 6px 16px rgba(108,77,255,0.35); }
.nav-links { display: flex; gap: 22px; list-style: none; margin: 0; padding: 0; font-size: 14px; color: var(--text-2); margin-left: auto; }
.nav-links a { position: relative; padding: 4px 0; transition: color .2s; }
.nav-links a::after { content:""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0; border-radius: 2px; background: var(--grad); transition: width .25s ease; }
.nav-links a:hover { color: var(--text-1); }
.nav-links a:hover::after { width: 100%; }
.nav .btn { padding: 10px 20px; font-size: 14px; }

/* ---------- Hero (full-screen immersive KV) ---------- */
.hero { position: relative; z-index: 1; min-height: 100dvh; display: flex; align-items: center; overflow: hidden; }
.hero-video { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-scrim { position: absolute; inset: 0; z-index: 1; pointer-events: none; background:
  linear-gradient(to bottom, rgba(250,251,255,0.6) 0%, rgba(250,251,255,0.04) 24%, rgba(250,251,255,0) 46%, rgba(250,251,255,0.92) 100%),
  radial-gradient(120% 90% at 50% 38%, rgba(255,255,255,0) 42%, rgba(255,255,255,0.22) 100%); }
.hero-content { position: relative; z-index: 2; width: 100%; }
.hero-inner { max-width: 820px; margin: 0 auto; text-align: center; padding: 130px 24px 96px; }
.hero-inner .eyebrow { margin-bottom: 22px; background: rgba(255,255,255,0.72); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.9); }
.hero-inner .subtitle { margin: 24px 0 18px; font-size: clamp(16px, 2.4vw, 22px); font-weight: 600; letter-spacing: 0.14em; color: var(--text-1); opacity: .82; }
.hero-inner .lede { margin: 0 auto 36px; max-width: 540px; color: var(--text-1); opacity: .8; }
.hero-inner .ctas { justify-content: center; }
.scroll-hint { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 3; display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--text-2); font-size: 12px; letter-spacing: .1em; }
.scroll-hint span { width: 1px; height: 36px; background: linear-gradient(to bottom, var(--violet), transparent); animation: scrollLine 2s ease-in-out infinite; }
@keyframes scrollLine { 0%,100%{transform:scaleY(0); transform-origin:top} 50%{transform:scaleY(1); transform-origin:top} 51%{transform-origin:bottom} 100%{transform:scaleY(0); transform-origin:bottom} }

/* ---------- Section base + editorial head ---------- */
.section { position: relative; z-index: 1; padding: clamp(80px, 11vw, 140px) 0; }
.sec-no { font-family: var(--serif); font-weight: 700; font-size: clamp(48px, 8vw, 110px); line-height: 0.9; color: transparent; -webkit-text-stroke: 1.5px var(--violet); opacity: .22; display: block; margin-bottom: 6px; }
.editorial-head { max-width: 920px; margin: 0 0 56px; }
.editorial-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.editorial-head .kicker { display: block; margin-bottom: 14px; }
.editorial-head h2 { font-size: clamp(32px, 4.6vw, 58px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.05; margin: 0; }
.editorial-head p { color: var(--text-2); font-size: 18px; margin: 18px 0 0; max-width: 620px; }
.editorial-head.center p { margin-left: auto; margin-right: auto; }

/* 01 — 对标锚点 */
.anchors-lead { font-family: var(--serif); font-size: clamp(26px, 3.4vw, 44px); line-height: 1.3; font-weight: 600; max-width: 880px; margin: 0 0 48px; }
.anchors-lead b { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); margin-top: 8px; }
.marquee-track { display: flex; gap: 18px; width: max-content; animation: scrollX 28s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes scrollX { to { transform: translateX(-50%); } }
.anchor-card { flex: 0 0 auto; width: 300px; padding: 26px 28px; border-radius: 18px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-sm); transition: transform .25s, border-color .25s; }
.anchor-card:hover { transform: translateY(-4px); border-color: var(--violet); }
.anchor-card .tag { font-family: var(--mono); font-size: 12px; font-weight: 700; color: var(--cyan); letter-spacing: .08em; }
.anchor-card .name { font-size: 22px; font-weight: 800; margin: 8px 0 4px; letter-spacing: -0.01em; }
.anchor-card .desc { font-size: 14px; color: var(--text-2); }

/* 02 — 六层能力矩阵 (Bento) */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.bento-card { position: relative; grid-column: span 2; padding: 34px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-sm); overflow: hidden; transform-style: preserve-3d; transition: transform .2s ease, box-shadow .3s, border-color .3s; }
.bento-card::before { content:""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .3s; }
.bento-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.bento-card:hover::before { opacity: 1; }
.bento-card.lg { grid-column: span 4; grid-row: span 2; display: flex; flex-direction: column; justify-content: space-between; }
.bento-no { font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--violet); letter-spacing: .12em; }
.bento-ico { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: rgba(108,77,255,0.10); color: var(--violet); font-size: 24px; margin: 18px 0; transition: transform .3s; }
.bento-card:hover .bento-ico { transform: scale(1.08) rotate(-4deg); }
.bento-card h3 { font-size: 20px; font-weight: 800; margin: 0 0 8px; letter-spacing: -0.01em; }
.bento-card p { font-size: 15px; color: var(--text-2); margin: 0; }
.bento-card.lg h3 { font-size: clamp(26px, 3vw, 38px); }
.bento-card.lg p { font-size: 17px; max-width: 460px; }

/* 03 — 三大绝对支撑 (editorial stat band) */
.statband { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat { padding: 48px 32px; text-align: left; position: relative; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat-num { display: block; font-family: var(--serif); font-weight: 700; font-size: clamp(54px, 7vw, 92px); line-height: 1; letter-spacing: -0.02em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-suffix { font-family: var(--serif); font-size: 32px; font-weight: 700; color: var(--violet); margin-left: 2px; }
.stat-label { margin-top: 14px; font-size: 15px; color: var(--text-2); }
.stat-note { margin-top: 4px; font-size: 13px; color: var(--text-3); font-family: var(--mono); }

/* 04 — 五层飞轮 */
.fly-wrap { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px; align-items: center; }
.fly-visual { position: relative; display: grid; place-items: center; }
.flywheel { width: min(420px, 86vw); aspect-ratio: 1; overflow: visible; }
.fly-track { fill: none; stroke: #E7E9F2; stroke-width: 2; }
.fly-flow { fill: none; stroke: url(#fg); stroke-width: 3.5; stroke-linecap: round; stroke-dasharray: 14 20; transform-origin: 200px 200px; animation: spin 16s linear infinite; }
.fly-orbit { transform-origin: 200px 200px; animation: spin 10s linear infinite; }
.fly-orbit circle { fill: #fff; filter: drop-shadow(0 0 6px rgba(108,77,255,0.85)); }
.fly-spoke { stroke: url(#fg); stroke-width: 1.5; opacity: .35; }
.fly-node { transform-box: fill-box; transform-origin: center; transition: transform .35s cubic-bezier(.2,.8,.2,1), filter .35s; cursor: pointer; }
.fly-node .nd { fill: url(#fg); }
.fly-node .ring { fill: none; stroke: #fff; stroke-width: 3; }
.fly-node text { fill: #fff; font-weight: 800; font-size: 18px; text-anchor: middle; dominant-baseline: central; }
.fly-node:hover, .fly-node.active { transform: scale(1.18); filter: drop-shadow(0 6px 16px rgba(108,77,255,0.55)); }
.fly-hub { transform-box: fill-box; transform-origin: center; animation: hubPulse 3.4s ease-in-out infinite; }
.fly-hub .core { fill: url(#fg); }
.fly-hub text { fill: #fff; font-weight: 800; font-size: 17px; text-anchor: middle; dominant-baseline: central; }
@keyframes hubPulse { 0%,100%{ transform: scale(1); } 50%{ transform: scale(1.06); } }
@keyframes spin { to { transform: rotate(360deg); } }
.fly-steps { display: flex; flex-direction: column; gap: 0; }
.fly-step { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; padding: 20px 4px; border-bottom: 1px solid var(--line-soft); position: relative; transition: padding-left .3s; }
.fly-step:last-child { border-bottom: 0; }
.fly-step::before { content:""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--grad); transform: scaleY(0); transform-origin: top; transition: transform .3s; }
.fly-step:hover, .fly-step.active { padding-left: 16px; }
.fly-step:hover::before, .fly-step.active::before { transform: scaleY(1); }
.fly-num { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; color: #fff; background: var(--grad); box-shadow: 0 6px 16px rgba(108,77,255,0.3); font-family: var(--mono); }
.fly-step h4 { margin: 0 0 2px; font-size: 17px; font-weight: 700; }
.fly-step p { margin: 0; font-size: 14px; color: var(--text-2); }

/* 05 — 开发者全链路 (editorial steps) */
.steps { position: relative; border-top: 1px solid var(--line); }
.estep { display: grid; grid-template-columns: 120px 1fr auto; gap: 28px; align-items: center; padding: 30px 0; border-bottom: 1px solid var(--line); transition: padding-left .3s; }
.estep:hover { padding-left: 14px; }
.estep-no { font-family: var(--serif); font-weight: 700; font-size: 40px; line-height: 1; color: transparent; -webkit-text-stroke: 1.2px var(--violet); transition: color .3s; }
.estep:hover .estep-no { color: var(--violet); -webkit-text-stroke: 0; }
.estep-body h4 { margin: 0 0 4px; font-size: 20px; font-weight: 800; letter-spacing: -0.01em; }
.estep-body p { margin: 0; font-size: 15px; color: var(--text-2); }
.estep-tag { font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: .08em; color: var(--cyan); white-space: nowrap; }

/* Manifesto */
.manifesto { text-align: center; padding: clamp(70px, 10vw, 130px) 0; }
.manifesto .display-xl { max-width: 14ch; margin: 0 auto; }
.manifesto .rule { width: 80px; height: 2px; background: var(--grad); margin: 36px auto; border: 0; }
.manifesto p { color: var(--text-2); font-size: 18px; max-width: 560px; margin: 0 auto; }

/* Finale */
.finale { position: relative; overflow: hidden; text-align: center; padding: clamp(70px, 9vw, 110px) 32px; border-radius: var(--radius-lg); background: linear-gradient(135deg, #0C0E1A, #1A1340); color: #fff; box-shadow: var(--shadow-md); }
.finale .kicker { color: #aef; }
.finale h2 { color: #fff; font-size: clamp(34px, 5vw, 64px); font-weight: 800; letter-spacing: -0.03em; margin: 14px 0; }
.finale .lede { color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 32px; }
.finale .ctas { justify-content: center; }
.finale .btn-ghost { background: rgba(255,255,255,0.08); color: #fff; border-color: rgba(255,255,255,0.25); }
.finale .btn-ghost:hover { color: #fff; border-color: #fff; }
.finale-glow { position: absolute; width: 460px; height: 460px; border-radius: 50%; background: radial-gradient(circle, rgba(108,77,255,0.5), transparent 60%); filter: blur(30px); top: -160px; left: 50%; transform: translateX(-50%); animation: pulse 8s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:.6; transform:translateX(-50%) scale(1)} 50%{opacity:1; transform:translateX(-50%) scale(1.08)} }

/* Footer */
.footer { position: relative; z-index: 1; padding: 60px 0 40px; border-top: 1px solid var(--line); color: var(--text-2); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 32px; }
.footer h5 { font-size: 14px; color: var(--text-1); margin: 0 0 14px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.footer a:hover { color: var(--violet); }
.footer .copy { margin-top: 40px; font-size: 13px; color: var(--text-3); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.reveal[data-d="4"] { transition-delay: .32s; }
.reveal[data-d="5"] { transition-delay: .40s; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .bento { grid-template-columns: 1fr; }
  .bento-card, .bento-card.lg { grid-column: auto; grid-row: auto; }
  .statband { grid-template-columns: 1fr; }
  .stat + .stat { border-left: 0; border-top: 1px solid var(--line); }
  .fly-wrap { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .estep { grid-template-columns: 64px 1fr; }
  .estep-tag { display: none; }
  .nav-links { display: none; }
  .aurora { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}
body.motion-off *, body.motion-off *::before, body.motion-off *::after { animation-play-state: paused !important; }

/* =========================================================
   共享布局 / 子页组件（编辑 · 白底）
   ========================================================= */
.nav-links a.active { color: var(--text-1); }
.nav-links a.active::after { width: 100%; }

/* 用户菜单 */
.user-menu { position: relative; margin-left: 6px; }
.user-chip { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: var(--pill); background: var(--surface); border: 1px solid var(--line); font-size: 14px; font-weight: 600; cursor: pointer; box-shadow: var(--shadow-sm); transition: border-color .2s, color .2s; }
.user-chip:hover { border-color: var(--violet); color: var(--violet); }
.user-drop { position: absolute; right: 0; top: calc(100% + 10px); width: 180px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-md); padding: 8px; display: none; flex-direction: column; gap: 2px; z-index: 120; }
.user-drop.open { display: flex; }
.user-drop a, .user-drop button { text-align: left; padding: 10px 12px; border-radius: 10px; font-size: 14px; color: var(--text-1); background: none; border: 0; cursor: pointer; }
.user-drop a:hover, .user-drop button:hover { background: rgba(108,77,255,.08); color: var(--violet); }

/* 子页头部 */
.subhero { padding: 132px 0 36px; position: relative; z-index: 1; }
.subhero .kicker { display: block; margin-bottom: 14px; }
.subhero h1 { font-size: clamp(34px, 5vw, 58px); font-weight: 800; letter-spacing: -0.03em; margin: 0; line-height: 1.04; }
.subhero p { color: var(--text-2); font-size: 18px; max-width: 660px; margin: 16px 0 0; }
.container.narrow { max-width: 1000px; }

/* 通用面板 / 卡片 */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.panel + .panel { margin-top: 22px; }
.card-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.mcard { padding: 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-sm); transition: transform .25s, border-color .25s, box-shadow .25s; position: relative; overflow: hidden; }
.mcard:hover { transform: translateY(-4px); border-color: var(--violet); box-shadow: var(--shadow-md); }
.mcard h3 { margin: 0 0 6px; font-size: 18px; font-weight: 800; }
.mcard .mprovider { font-family: var(--mono); font-size: 12px; color: var(--cyan); letter-spacing: .06em; }
.mcard p { color: var(--text-2); font-size: 14px; margin: 8px 0 0; }

/* 表单 */
.field { display: block; margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-1); }
.field input, .field textarea, .field select { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; font-size: 14px; font-family: var(--font); background: var(--surface); color: var(--text-1); transition: border-color .2s, box-shadow .2s; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 3px rgba(108,77,255,.12); }
.field textarea { resize: vertical; min-height: 120px; }

/* 代码块 */
.code { font-family: var(--mono); background: #0C0E1A; color: #cfe3ff; padding: 16px 18px; border-radius: 14px; font-size: 13px; line-height: 1.6; overflow: auto; white-space: pre; }
.code .cm { color: #7f8db0; }

/* 数据瓦片 */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; }
.tile { padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.tile .num { font-family: var(--serif); font-size: clamp(30px, 4.5vw, 46px); font-weight: 700; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tile .lab { margin-top: 10px; font-size: 13px; color: var(--text-2); }
.tile .sub { font-family: var(--mono); font-size: 11px; color: var(--text-3); margin-top: 2px; }

/* 令牌列表 */
.token-item { display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; margin-bottom: 10px; background: var(--surface); }
.token-meta { min-width: 0; }
.token-key { font-family: var(--mono); font-size: 12px; color: var(--text-2); word-break: break-all; }
.token-name { font-weight: 700; font-size: 14px; }
.token-when { font-size: 12px; color: var(--text-3); font-family: var(--mono); }
.copy-btn, .mini-btn { border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 6px 14px; font-size: 13px; cursor: pointer; transition: .2s; }
.copy-btn:hover, .mini-btn:hover { border-color: var(--violet); color: var(--violet); }
.mini-btn.danger:hover { border-color: #e23; color: #e23; }

/* 聊天 */
.chat-wrap { display: grid; gap: 18px; }
@media (min-width: 900px) { .chat-wrap { grid-template-columns: 1fr 1.1fr; } }
.chat-box { display: flex; flex-direction: column; gap: 12px; min-height: 280px; max-height: 420px; overflow: auto; padding: 4px; }
.chat-msg { padding: 12px 16px; border-radius: 14px; max-width: 86%; font-size: 14px; line-height: 1.55; }
.chat-msg.user { align-self: flex-end; background: var(--grad); color: #fff; }
.chat-msg.ai { align-self: flex-start; background: var(--surface); border: 1px solid var(--line); }
.chat-msg .who { font-family: var(--mono); font-size: 10px; letter-spacing: .08em; opacity: .6; display: block; margin-bottom: 4px; }
.chat-input-row { display: flex; gap: 10px; }
.chat-input-row textarea { flex: 1; min-height: 52px; }
.guide-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.guide-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 14px; color: var(--text-2); }
.guide-list .n { flex: 0 0 26px; height: 26px; border-radius: 50%; background: rgba(108,77,255,.12); color: var(--violet); display: grid; place-items: center; font-family: var(--mono); font-size: 12px; font-weight: 700; }

/* 社区 */
.post { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: var(--surface); margin-bottom: 18px; transition: border-color .25s, transform .25s; }
.post:hover { border-color: var(--violet); transform: translateY(-3px); }
.post h3 { margin: 0 0 8px; font-size: 20px; font-weight: 800; }
.post .body { color: var(--text-2); font-size: 15px; white-space: pre-wrap; }
.post .meta { display: flex; gap: 12px; align-items: center; margin-top: 14px; font-size: 13px; color: var(--text-3); font-family: var(--mono); flex-wrap: wrap; }
.tag { font-family: var(--mono); font-size: 11px; padding: 3px 10px; border-radius: 999px; background: rgba(0,180,232,.1); color: var(--cyan); }
.empty { text-align: center; color: var(--text-3); padding: 40px 0; }

/* ============ 弹窗 / Toast ============ */
.modal-mask { position: fixed; inset: 0; z-index: 300; display: none; align-items: center; justify-content: center; background: rgba(12,14,26,.45); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.modal { width: min(420px, 92vw); background: var(--surface); border-radius: var(--radius-lg); padding: 32px; position: relative; box-shadow: var(--shadow-md); border: 1px solid var(--line); }
.modal-close { position: absolute; right: 16px; top: 14px; width: 32px; height: 32px; border-radius: 50%; border: 0; background: rgba(12,14,26,.05); font-size: 20px; cursor: pointer; color: var(--text-2); }
.modal-close:hover { background: rgba(12,14,26,.1); }
.modal-tabs { display: flex; gap: 8px; margin-bottom: 22px; }
.mtab { flex: 1; padding: 10px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); font-size: 14px; font-weight: 600; cursor: pointer; color: var(--text-2); transition: .2s; }
.mtab.active { background: var(--grad); color: #fff; border-color: transparent; }
.auth-form label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-1); }
.auth-form input { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; font-size: 14px; margin-bottom: 16px; background: var(--surface); }
.auth-form input:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 3px rgba(108,77,255,.12); }
.auth-msg { font-size: 13px; min-height: 18px; margin: 4px 0 0; }
.auth-msg.err { color: #d23; }

#toast-box { position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 400; display: flex; flex-direction: column; gap: 10px; align-items: center; pointer-events: none; }
.toast { background: #0C0E1A; color: #fff; padding: 12px 22px; border-radius: 999px; font-size: 14px; box-shadow: var(--shadow-md); opacity: 0; transform: translateY(12px); transition: .3s; }
.toast.show { opacity: 1; transform: none; }
.toast-ok { background: linear-gradient(120deg, #12C98A, #06b3a0); }
.toast-err { background: #e23; }
.toast-info { background: #0C0E1A; }

@media (max-width: 980px) {
  .user-drop { position: static; box-shadow: none; border: 0; padding: 4px 0; }
}