/* ============================================================
   AI池子 V1.3 · 视觉升级层（深海AI池 + 轻科技工作台）
   仅改变视觉与交互质感；不修改业务结构 / 支付逻辑 / SEO 结构。
   动效规范：微交互 180–500ms；环境光效为低频轻量循环；
   完整支持 prefers-reduced-motion。
   ============================================================ */

:root {
  /* 深海 AI 池 · 色板 */
  --sea-900: #04263b;      /* 深海：页脚 / 深色 CTA / 终屏 */
  --sea-700: #0b3a57;      /* 池壁蓝 */
  --ink: #0d2436;          /* 标题文字 */
  --ink-2: #16364e;
  --accent: #17a5cc;       /* 青蓝高亮：主行动 */
  --accent-deep: #0d7fa6;  /* 青蓝深：hover */
  --cyan: #38c8d8;         /* 荧光青：节点光 / 点缀 */
  --surface: #eef4f9;      /* 浅蓝灰：内容背景 */
  --paper: #ffffff;
  --line: #d7e4ee;
  --text: #1e2f3d;
  --text-2: #4f6173;
  --text-3: #5e7084;       /* 次要文字：AA 达标 */
  --ripple: var(--accent);
  --ripple-deep: #0b6e94;  /* 链接 / hover：AA 达标 */
  --teal: #0a6e7e;         /* 标签文字：AA 达标 */
  --amber: #b45309;
  --amber-bg: #fff6e8;
  --danger: #b42318;

  /* 几何与层级 */
  --radius: 16px;
  --shadow: 0 1px 2px rgba(4, 38, 59, .05), 0 8px 24px rgba(4, 38, 59, .06);
  --shadow-hover: 0 2px 4px rgba(4, 38, 59, .06), 0 18px 40px rgba(4, 38, 59, .12);

  /* 字体：轻科技工作台（无衬线显示 + 等宽标签） */
  --font-display: "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;

  /* 动效令牌 */
  --dur-1: 180ms;
  --dur-2: 260ms;
  --dur-3: 400ms;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

body { background: var(--surface); }

/* ---------- 通用图标（SVG 线性） ---------- */
.ic {
  width: 1.2em; height: 1.2em;
  stroke: currentColor; fill: none;
  stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
  vertical-align: -0.22em; flex: 0 0 auto;
  transition: transform var(--dur-1) var(--ease), color var(--dur-1) var(--ease);
}
.icon-cover {
  width: 46px; height: 46px; flex: 0 0 46px; border-radius: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--accent-deep); background: linear-gradient(145deg, #e7f4fb, #dbeef8);
  border: 1px solid #cfe5f2;
}
.icon-cover .ic { width: 24px; height: 24px; }
.ic-live { color: #e5484d; }

/* ---------- Hero：AI 节点入池（签名视觉） ---------- */
.hero {
  background:
    radial-gradient(720px 380px at 50% -8%, rgba(23, 165, 204, .16), transparent 62%),
    radial-gradient(1000px 460px at 50% 118%, rgba(56, 200, 216, .10), transparent 58%),
    linear-gradient(180deg, #f4fafd 0%, var(--surface) 100%);
}
.hero-ripple { opacity: .7; }
.hero-ripple span {
  border-color: rgba(23, 165, 204, .22);
  animation-duration: 3.2s;
}
.hero-ripple span:nth-child(2) { animation-delay: -1.07s; }
.hero-ripple span:nth-child(3) { animation-delay: -2.13s; }
.hero-ripple span::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 1px dashed rgba(23, 165, 204, .14);
}
/* 中央 AI 节点 */
.hero-node {
  position: absolute; left: 50%; top: 42%; width: 18px; height: 18px;
  transform: translate(-50%, -50%); border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(56, 200, 216, .18), 0 0 22px rgba(56, 200, 216, .55);
  animation: node-pulse 3.2s var(--ease) infinite;
  pointer-events: none;
}
@keyframes node-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(56,200,216,.16), 0 0 16px rgba(56,200,216,.35); }
  55% { box-shadow: 0 0 0 7px rgba(56,200,216,.26), 0 0 32px rgba(56,200,216,.75); }
}
/* 水面光带 */
.hero-waterline {
  position: absolute; left: 0; right: 0; bottom: 0; height: 42px;
  background: linear-gradient(180deg, transparent, rgba(23, 165, 204, .08) 55%, rgba(23, 165, 204, .16));
  pointer-events: none;
}
.hero-waterline::before, .hero-waterline::after {
  content: ""; position: absolute; left: 50%; bottom: 8px; width: 3px; height: 3px;
  border-radius: 50%; background: var(--cyan); opacity: .7;
  animation: float-dot 3.5s ease-in-out infinite;
}
.hero-waterline::before { margin-left: -160px; animation-delay: 0s; }
.hero-waterline::after { margin-left: 140px; animation-delay: 1.17s; }
@keyframes float-dot {
  0%, 100% { transform: translateY(0); opacity: .25; }
  50% { transform: translateY(-5px); opacity: .8; }
}
.hero h1 { letter-spacing: .015em; }
.hero h1 .serif { color: var(--accent-deep); font-weight: 800; letter-spacing: .02em; }

/* ---------- 卡片：克制 hover ---------- */
.entry-card, .tool-card, .scene-card, .offer-card, .about-block, .stage, .value-item {
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease),
              border-color var(--dur-2) var(--ease);
}
.entry-card:hover, .tool-card:hover, .scene-card:hover, .offer-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: #c2ddec;
}
.entry-card:hover .icon-cover, .scene-card:hover .icon-cover, .tool-card:hover .icon-cover {
  color: var(--accent-deep);
}
.entry-card:hover .ic, .scene-card:hover .ic, .tool-card:hover .ic { transform: translateY(-1px) scale(1.04); }
.scene-card li::before { background: var(--accent); box-shadow: 0 0 0 2px rgba(23,165,204,.12); }

/* 按钮：更冷的高亮与柔和光 */
.btn { transition: transform var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease), background var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease); }
/* 主按钮：保留品牌青蓝 #17A5CC，深色文字保证 WCAG AA（约 5.5:1） */
.btn-primary {
  background: #17a5cc;
  color: #04263b;
  box-shadow: 0 6px 18px rgba(23, 165, 204, .28);
}
.btn-primary:hover { background: #22b2da; color: #04263b; }
.btn-ink { background: var(--sea-900); }
.btn-ink:hover { background: var(--sea-700); }
.btn-amber { background: var(--amber-bg); border-color: #f0d6a5; color: var(--amber); }
.btn-amber:hover { background: #fdeed2; }

/* ---------- 二维码弹窗：磨砂 + 微动效 ---------- */
.modal-mask {
  background: rgba(4, 30, 51, .42);
  -webkit-backdrop-filter: blur(14px) saturate(1.25);
  backdrop-filter: blur(14px) saturate(1.25);
  transition: background var(--dur-2) var(--ease);
}
.modal {
  background: rgba(255, 255, 255, .94);
  border: 1px solid rgba(255, 255, 255, .65);
  box-shadow: 0 28px 80px rgba(4, 30, 51, .32);
  transform: translateY(10px) scale(.97);
  opacity: 0;
  transition: transform var(--dur-2) var(--ease), opacity var(--dur-2) var(--ease);
}
.modal-mask.open .modal { transform: translateY(0) scale(1); opacity: 1; }
.modal img.qr { box-shadow: 0 0 0 4px rgba(23, 165, 204, .08); }
.modal .modal-close { transition: background var(--dur-1) var(--ease), transform var(--dur-1) var(--ease); }
.modal .modal-close:hover { background: #e4f1fa; transform: translateY(-1px); }

/* ---------- AI 自动化页：多 AI 协作流程动效 ---------- */
.flow-diagram .arrow {
  position: relative; color: var(--accent-deep); font-weight: 600;
  animation: arrow-sink 3.2s ease-in-out infinite;
}
.flow-diagram .arrow:nth-of-type(2) { animation-delay: .4s; }
.flow-diagram .arrow:nth-of-type(3) { animation-delay: .8s; }
@keyframes arrow-sink {
  0%, 100% { transform: translateY(0); opacity: .55; }
  30% { transform: translateY(3px); opacity: 1; }
}
.flow-roles .role {
  border: 1px solid var(--line);
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
  animation: role-in var(--dur-3) var(--ease) both;
}
.flow-roles .role:nth-child(2) { animation-delay: .08s; }
.flow-roles .role:nth-child(3) { animation-delay: .16s; }
.flow-roles .role:nth-child(4) { animation-delay: .24s; }
@keyframes role-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.flow-roles .role:hover { transform: translateY(-2px); border-color: #b9dff0; box-shadow: var(--shadow-hover); }
.flow-roles .role .dot {
  color: var(--accent-deep);
  background: linear-gradient(145deg, #e7f4fb, #dceef8);
  border: 1px solid #cfe5f2;
}
.flow-roles .role .dot .ic { width: 18px; height: 18px; }
.flow-roles .role:hover .dot { box-shadow: 0 0 0 4px rgba(23, 165, 204, .10); }

/* 标签小字对比度修正（AA） */
.tag.beta { background: #fff1e6; color: #b04a08; }
.tag.paid { background: var(--amber-bg); color: #9a4407; }
.tag.cps { background: #fdeee7; color: #a63a0a; }

/* ---------- Codex 页：产品演示窗（纯 CSS 工作台） ---------- */
.demo-window {
  max-width: 640px; margin: 26px auto 0; text-align: left;
  background: #0b2133; border: 1px solid rgba(23, 165, 204, .28);
  border-radius: 14px; box-shadow: 0 24px 60px rgba(4, 30, 51, .28), inset 0 1px 0 rgba(255,255,255,.06);
  overflow: hidden;
}
.demo-window .dw-bar {
  display: flex; align-items: center; gap: 6px; padding: 10px 14px;
  background: rgba(255, 255, 255, .04); border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.demo-window .dw-bar i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.demo-window .dw-bar i:nth-child(1) { background: #f47174; }
.demo-window .dw-bar i:nth-child(2) { background: #f5b33d; }
.demo-window .dw-bar i:nth-child(3) { background: #4cc38a; }
.demo-window .dw-bar span { margin-left: 8px; font-family: var(--font-mono); font-size: 12px; color: #8fb6cd; }
.demo-window .dw-body { padding: 16px 18px 18px; font-family: var(--font-mono); font-size: 13px; line-height: 1.75; }
.demo-window .dw-body .u { color: #9fd8ef; }
.demo-window .dw-body .u::before { content: "你 › "; color: #4f8ea8; }
.demo-window .dw-body .a { color: #c6e3f2; margin-top: 6px; }
.demo-window .dw-body .a::before { content: "Codex › "; color: var(--cyan); }
.demo-window .dw-body .ok { color: #4cc38a; }
.demo-window .dw-body .caret {
  display: inline-block; width: 8px; height: 14px; margin-left: 2px;
  background: var(--cyan); vertical-align: -2px;
  animation: caret-blink 1.1s steps(2, start) infinite;
}
.demo-window .dw-body .ic.dw-check { width: 13px; height: 13px; vertical-align: -2px; color: #4cc38a; margin-right: 3px; }
@keyframes caret-blink { to { visibility: hidden; } }

/* ---------- 作品区：真实截图 ---------- */
.works-shot {
  width: 100%; aspect-ratio: 16 / 9.6; object-fit: cover; object-position: top;
  border-radius: 12px; border: 1px solid var(--line); margin: 2px 0 10px;
  box-shadow: var(--shadow);
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease);
}
.works-shot:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.works-shot + .tag { position: relative; }

/* ---------- 移动端适配 ---------- */
@media (max-width: 640px) {
  .hero-node { top: 38%; }
  .demo-window { margin-top: 18px; }
}

/* ---------- 无障碍：减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .modal { transform: none; opacity: 1; }
  .flow-roles .role { animation: none; opacity: 1; }
}

/* ============================================================
   V1.4 · 工作流中心 / 详情页 / Campaign / 实验室
   ============================================================ */

/* ---- 工作流中心：平台切换 ---- */
.platform-tabs {
  display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px;
}
.ptab {
  border: 1px solid var(--line); background: var(--paper); border-radius: 999px;
  padding: 10px 18px; font-size: 14.5px; font-weight: 600; color: var(--text-2);
  cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  transition: all var(--dur-1) var(--ease);
}
.ptab b { font-family: var(--font-mono); color: var(--accent-deep); }
.ptab .soon { font-size: 11.5px; font-weight: 500; color: var(--text-3); background: var(--surface); border-radius: 999px; padding: 2px 8px; }
.ptab:hover { border-color: #b9dff0; color: var(--ink); }
.ptab.active { background: var(--sea-900); color: #fff; border-color: var(--sea-900); box-shadow: 0 6px 16px rgba(4,38,59,.22); }
.ptab.active b { color: var(--cyan); }
.ptab.active .soon { color: #b8c9d8; background: rgba(255,255,255,.1); }
.plat-panel.hidden { display: none; }
.plat-card {
  background: var(--paper); border: 1px dashed #c4d8e6; border-radius: var(--radius);
  padding: 48px 24px; text-align: center; box-shadow: var(--shadow);
}
.plat-card .ic { width: 34px; height: 34px; color: var(--text-3); margin: 0 auto 12px; }
.plat-card h3 { color: var(--ink); margin: 0 0 6px; }
.plat-card p { color: var(--text-2); margin: 0; font-size: 14px; }

/* ---- 工作流中心：顶部领取横幅 ---- */
.wf-banner {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  background: linear-gradient(135deg, #e7f4fb, #eef9f6); border: 1px solid #cfe5f5;
  border-radius: var(--radius); padding: 20px 22px; margin-bottom: 22px;
}
.wf-banner h2 { margin: 0 0 4px; font-size: 19px; color: var(--ink); }
.wf-banner p { margin: 0; color: var(--text-2); font-size: 13.5px; }

.wf-count { font-size: 13.5px; color: var(--text-2); margin: 4px 0 14px; }
.wf-disclaimer {
  margin-top: 24px; padding: 12px 14px; background: #f6f8fa; border: 1px solid var(--line);
  border-radius: 12px; font-size: 12.5px; color: var(--text-3); line-height: 1.7;
}

/* ---- 工作流卡片 ---- */
.wf-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
  transition: transform var(--dur-2) var(--ease), box-shadow var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}
.wf-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: #c2ddec; }
.wf-cover { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #062a40; }
.wf-cover-img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-2) var(--ease); }
.wf-card:hover .wf-cover-img { transform: scale(1.03); }
.wf-preview { position: absolute; inset: 0; }
.wf-preview video { width: 100%; height: 100%; object-fit: cover; }
.wf-cat {
  position: absolute; left: 10px; top: 10px; background: rgba(4,38,59,.78); color: #fff;
  font-size: 11.5px; padding: 3px 10px; border-radius: 999px; backdrop-filter: blur(6px);
}
.wf-id {
  position: absolute; right: 10px; top: 10px; background: rgba(4,38,59,.78); color: #9fd8ef;
  font-family: var(--font-mono); font-size: 11px; padding: 3px 8px; border-radius: 999px;
  backdrop-filter: blur(6px);
}
.wf-fallback {
  position: absolute; inset: 0; display: none; flex-direction: column; align-items: center;
  justify-content: center; gap: 8px; text-align: center; padding: 18px;
  background: linear-gradient(160deg, #04263b, #0b3a57 60%, #0b5a72);
}
.wf-fallback.show { display: flex; }
.wf-fallback .ic { width: 30px; height: 30px; color: var(--cyan); }
.wf-fallback span { font-size: 14px; font-weight: 600; color: #fff; line-height: 1.4; }
.wf-fallback em { font-style: normal; font-size: 12px; color: #7f96a8; }
.wf-video-error { text-align: center; padding: 26px 16px; background: #f6f8fa; border-radius: 0 0 12px 12px; }
.wf-video-error p { font-size: 14px; color: var(--text-2); margin: 0 0 12px; }
.wf-video-error .btn { margin: 0 4px; }
.wf-play {
  position: absolute; inset: 0; margin: auto; width: 48px; height: 48px; border-radius: 50%;
  border: 0; background: rgba(4,38,59,.55); color: #fff; cursor: pointer; display: flex;
  align-items: center; justify-content: center; backdrop-filter: blur(6px);
  transition: transform var(--dur-1) var(--ease), background var(--dur-1) var(--ease);
}
.wf-play .ic { width: 20px; height: 20px; }
.wf-card:hover .wf-play { background: rgba(23,165,204,.85); transform: scale(1.06); }
.wf-body { padding: 13px 14px 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.wf-title { color: var(--ink); font-size: 15px; font-weight: 700; line-height: 1.4; }
.wf-title:hover { color: var(--accent-deep); text-decoration: none; }
.wf-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.wf-tags .tag { font-size: 11.5px; }
.wf-foot { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.wf-foot .date { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-3); }

/* ---- 工作流视频弹窗 ---- */
.wf-modal-mask { z-index: 110; }
.wf-video-modal { max-width: 720px; }
.wf-video-modal video { width: 100%; border-radius: 12px; background: #04263b; aspect-ratio: 16 / 9; }

/* ---- 详情页 ---- */
.wf-video-box { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); margin-bottom: 18px; }
.wf-video-box video { width: 100%; display: block; aspect-ratio: 16 / 9; background: #04263b; }
.wf-video-hint { margin: 8px 0 0; font-size: 12.5px; color: var(--text-3); text-align: center; }
.wf-info-grid { display: grid; grid-template-columns: 1fr; gap: 12px; margin-bottom: 18px; }
@media (min-width: 700px) { .wf-info-grid { grid-template-columns: 1fr 1fr; } }
.wf-info { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; box-shadow: var(--shadow); }
.wf-info h3 { margin: 0 0 6px; font-size: 14.5px; color: var(--ink); }
.wf-info p { margin: 0 0 6px; color: var(--text-2); font-size: 13.5px; line-height: 1.7; }
.wf-info p:last-child { margin-bottom: 0; }
.wf-risk { background: #fdf6ec; border: 1px solid #f0ddbb; border-radius: 14px; padding: 14px 16px; margin-bottom: 18px; }
.wf-risk strong { color: var(--amber); font-size: 14px; }
.wf-risk p { margin: 6px 0 0; color: #6b5a3a; font-size: 13px; line-height: 1.75; }
.wf-cta {
  background: linear-gradient(135deg, #04263b, #0b3a57); border-radius: var(--radius);
  padding: 26px 24px; text-align: center; color: #fff; margin-bottom: 18px;
}
.wf-cta h2 { color: #fff; margin: 0 0 6px; font-size: 20px; }
.wf-cta p { color: #b8c9d8; margin: 0 0 16px; font-size: 14px; }
.wf-help { text-align: center; color: var(--text-2); font-size: 14px; margin-bottom: 10px; }
.wf-back { text-align: center; margin-top: 8px; }

/* ---- Campaign 弹窗（首访一次） ---- */
.campaign-mask {
  position: fixed; inset: 0; z-index: 120; display: none; align-items: center; justify-content: center;
  padding: 20px; background: rgba(4, 30, 51, .46);
  -webkit-backdrop-filter: blur(16px) saturate(1.25);
  backdrop-filter: blur(16px) saturate(1.25);
}
.campaign-mask.open { display: flex; }
.campaign {
  position: relative; width: 100%; max-width: 440px; text-align: center;
  background: rgba(255, 255, 255, .96); border: 1px solid rgba(255, 255, 255, .7);
  border-radius: 22px; padding: 34px 28px 28px;
  box-shadow: 0 30px 90px rgba(4, 30, 51, .38);
  transform: translateY(12px) scale(.97); opacity: 0;
  transition: transform var(--dur-2) var(--ease), opacity var(--dur-2) var(--ease);
}
.campaign-mask.open .campaign { transform: translateY(0) scale(1); opacity: 1; }
.campaign .cam-badge {
  display: inline-block; background: #e7f4fb; color: var(--accent-deep); font-size: 12px;
  font-weight: 700; padding: 4px 12px; border-radius: 999px; margin-bottom: 12px;
}
.campaign h2 { font-size: 22px; color: var(--ink); margin: 0 0 8px; line-height: 1.35; }
.campaign h2 em { font-style: normal; color: var(--accent-deep); }
.campaign p { color: var(--text-2); font-size: 14px; margin: 0 0 18px; }
.campaign .cam-actions { display: flex; flex-direction: column; gap: 10px; }
.campaign .cam-close {
  position: absolute; top: 12px; right: 14px; background: none; border: 0; font-size: 22px;
  color: var(--text-3); cursor: pointer; line-height: 1;
}
.campaign .cam-note { font-size: 12px; color: var(--text-3); margin-top: 14px; }
/* 移动端 Bottom Sheet */
@media (max-width: 560px) {
  .campaign-mask { align-items: flex-end; padding: 0; }
  .campaign {
    max-width: none; border-radius: 22px 22px 0 0; padding-bottom: calc(28px + env(safe-area-inset-bottom));
    transform: translateY(100%);
  }
  .campaign-mask.open .campaign { transform: translateY(0); }
}

/* ---- 首页：AI 工作流库 ---- */
.wf-featured-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 640px) { .wf-featured-grid { grid-template-columns: repeat(3, 1fr); } }
.wf-featured-grid .wf-card { animation: none; }
.wf-library-banner {
  background: linear-gradient(135deg, #04263b, #0b3a57 55%, #0b5a72);
  border-radius: var(--radius); padding: 26px 24px; color: #fff; margin-bottom: 18px;
  display: flex; flex-direction: column; gap: 12px; align-items: flex-start;
}
.wf-library-banner .lb-num { font-family: var(--font-mono); font-size: 30px; font-weight: 800; color: var(--cyan); }
.wf-library-banner h2 { color: #fff; font-size: 22px; margin: 0; }
.wf-library-banner p { color: #b8c9d8; font-size: 14px; margin: 0; }
.plat-entry {
  background: var(--paper); border: 1px dashed #c4d8e6; border-radius: var(--radius);
  padding: 18px; display: flex; align-items: center; gap: 12px; box-shadow: var(--shadow);
}
.plat-entry .icon-cover { width: 40px; height: 40px; flex: 0 0 40px; }
.plat-entry h4 { margin: 0; font-size: 15px; color: var(--ink); }
.plat-entry p { margin: 2px 0 0; font-size: 12.5px; color: var(--text-3); }

/* ---- 实验室：真实 AI 开发流水线 ---- */
.pipeline {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px 6px;
  margin: 0 auto 26px; max-width: 720px;
}
.pipeline .p-node {
  display: inline-flex; align-items: center; gap: 6px; background: var(--paper);
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 13px; font-size: 12.5px;
  color: var(--text-2); box-shadow: var(--shadow);
}
.pipeline .p-node .ic { width: 14px; height: 14px; color: var(--accent-deep); }
.pipeline .p-node.done { color: var(--ink); font-weight: 600; }
.pipeline .p-node.done .ic { color: #16a34a; }
.pipeline .p-arrow { color: var(--text-3); font-size: 13px; }
.pipeline .p-flow {
  position: relative; width: 46px; height: 2px; background: var(--line); overflow: hidden;
}
.pipeline .p-flow::after {
  content: ""; position: absolute; top: 0; left: -10px; width: 10px; height: 2px;
  background: var(--cyan); animation: flow-run 3.2s ease-in-out infinite;
}
@keyframes flow-run { 0% { left: -10px; opacity: 0; } 20% { opacity: 1; } 100% { left: 46px; opacity: 0; } }
@media (max-width: 560px) {
  .pipeline .p-flow { display: none; }
  .pipeline { gap: 6px; }
}