/* ═══════════════════════════════════════════════════════════════════════
   Ai神彩 官网 · 设计系统 v2（2026-10-20）
   ─────────────────────────────────────────────────────────────────────
   改造目标：参考 NodeXX 官网的视觉语言（青色主调 / 大圆角卡片 / 柔和渐变 /
   滚动揭示动画 / 轮播 Banner / 蓝色下划线 Tab），在**不破坏既有类名**的前提下
   升级为可维护的 token 体系。纯 CSS，无框架、无外部字体依赖（SEO/性能优先）。

   配色策略：品牌绿（#22c55e）保留为「专业/命中」语义色，
             新增青色（#02b7cf）作为「科技/主推」强调色，两者分工不打架。
   ═══════════════════════════════════════════════════════════════════════ */
:root {
  /* ── 背景层 ── */
  --bg: #0a0e13;
  --bg-soft: #0f141b;
  --bg-elev: #121922;
  --card: #131a23;
  --card-hi: #1a2230;
  --line: #232d3b;
  --line-hi: #2e3a4b;

  /* ── 文字层 ── */
  --text: #e6edf5;
  --dim: #93a2b5;
  --dim2: #6b7c91;

  /* ── 品牌绿（保留原语义）── */
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, .14);
  --accent-2: #4ade80;
  --accent-line: rgba(34, 197, 94, .32);

  /* ── 科技青（新增，参考 NodeXX #02b7cf）── */
  --cyan: #02b7cf;
  --cyan-2: #4fd8ea;
  --cyan-soft: rgba(2, 183, 207, .14);
  --cyan-line: rgba(2, 183, 207, .34);
  --cyan-glow: rgba(2, 183, 207, .22);

  /* ── 语义色 ── */
  --up: #25ed78;
  --down: #fb4755;
  --warn: #fe8731;
  --gold: #f5c451;

  /* ── 圆角（参考 NodeXX：2 / 6 / 8 / 16 / 24 / 999）── */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --radius-pill: 999px;

  /* ── 阴影（Ant 风格柔和三层）── */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, .28);
  --shadow: 0 12px 34px rgba(0, 0, 0, .40);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, .50);

  /* ── 间距节奏 ── */
  --sp-1: 8px;  --sp-2: 16px; --sp-3: 24px; --sp-4: 32px;
  --sp-5: 44px; --sp-6: 60px; --sp-7: 84px;

  --max: 1160px;
  --max-wide: 1280px;

  /* ── 渐变 ── */
  --grad-cyan: linear-gradient(135deg, rgba(2, 183, 207, .16), rgba(2, 183, 207, .03) 55%, transparent);
  --grad-brand: linear-gradient(135deg, rgba(34, 197, 94, .16), rgba(2, 183, 207, .06) 60%, transparent);
  --grad-card: linear-gradient(160deg, var(--card-hi), var(--card));
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ── 锚点偏移（粘性头部）── */
:target { scroll-margin-top: 84px; }

/* ═══ 通用容器 / 标题 ═══ */
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.wrap-wide { width: 100%; max-width: var(--max-wide); margin: 0 auto; padding: 0 24px; }
section { padding: 84px 0; }
.section-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 14px;
}
.section-kicker::before { content: ''; width: 22px; height: 2px; background: var(--cyan); border-radius: 2px; }
h2.section-title { font-size: clamp(26px, 4vw, 38px); line-height: 1.3; font-weight: 800; letter-spacing: -.02em; }
.section-desc { margin-top: 14px; color: var(--dim); font-size: 16px; max-width: 720px; }
.center { text-align: center; }
.center .section-desc { margin-left: auto; margin-right: auto; }
.section-alt { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ═══ Header ═══ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10, 14, 19, .82);
  backdrop-filter: blur(16px) saturate(1.5);
  border-bottom: 1px solid var(--line);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); border-bottom-color: var(--line-hi); }
.header-inner { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 17px; letter-spacing: -.01em; }
.brand img { width: 30px; height: 30px; border-radius: 8px; object-fit: cover; }
.brand span { color: var(--text); }
.nav { display: flex; gap: 4px; margin-left: 20px; }
.nav a {
  padding: 7px 12px; border-radius: var(--radius-sm); font-size: 14px; color: var(--dim);
  transition: color .16s, background .16s; white-space: nowrap;
}
.nav a:hover { color: var(--text); background: var(--card); }
.nav a.active { color: var(--cyan-2); background: var(--cyan-soft); }
.nav a.nav-hot { color: var(--gold); }
.nav a.nav-hot:hover { color: var(--gold); background: rgba(245, 196, 81, .1); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* 移动端抽屉 */
.nav-toggle {
  display: none; width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: var(--card); border: 1px solid var(--line); color: var(--text);
  align-items: center; justify-content: center; cursor: pointer;
}
.nav-toggle span { display: block; width: 16px; height: 2px; background: currentColor; position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ''; position: absolute; left: 0; width: 16px; height: 2px; background: currentColor;
}
.nav-toggle span::before { top: -5px; } .nav-toggle span::after { top: 5px; }
.drawer {
  position: fixed; inset: 64px 0 auto 0; z-index: 99;
  background: var(--bg-elev); border-bottom: 1px solid var(--line);
  padding: 12px 24px 22px; display: none; flex-direction: column; gap: 2px;
  box-shadow: var(--shadow);
  /* ⚠️ 2026-10-20 修复：原实现没有高度上限也没有滚动。
     横屏手机（视口高 320~390px）时抽屉实际高 458px → 超出视口、
     不能滚动、最后两项菜单「术语词典 / 进入站点」看不到也点不到。
     加 max-height + overflow-y:auto 后，任何视口高度都能完整访问所有菜单项。 */
  max-height: calc(100vh - 64px);
  max-height: calc(100dvh - 64px);   /* dvh 处理移动端地址栏收缩，旧浏览器回落到 vh */
  overflow-y: auto;
  overscroll-behavior: contain;      /* 抽屉内滚到底不把页面一起带着滚 */
  -webkit-overflow-scrolling: touch;
}
.drawer.open { display: flex; }
.drawer a { padding: 12px 4px; font-size: 15px; color: var(--dim); border-bottom: 1px solid var(--line); flex: 0 0 auto; }
.drawer a:last-child { border-bottom: none; }
.drawer a:hover { color: var(--cyan-2); }

/* 抽屉展开时锁定页面滚动，避免「两个滚动条打架」 */
body.drawer-open { overflow: hidden; }

/* ═══ 按钮 ═══ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 42px; padding: 0 20px; border-radius: var(--radius-sm); border: 1px solid transparent;
  font-size: 14px; font-weight: 700; cursor: pointer; white-space: nowrap;
  transition: transform .14s, filter .14s, background .14s, border-color .14s, color .14s, box-shadow .14s;
  font-family: inherit;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #04120a; box-shadow: 0 8px 22px rgba(34, 197, 94, .24); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-cyan { background: var(--cyan); color: #04161a; box-shadow: 0 8px 22px var(--cyan-glow); }
.btn-cyan:hover { filter: brightness(1.1); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan-2); }
.btn-gold { background: linear-gradient(135deg, #f7d27a, #e2a93b); color: #2a1c02; }
.btn-gold:hover { filter: brightness(1.06); }
.btn-lg { height: 50px; padding: 0 26px; font-size: 15px; border-radius: var(--radius); }
.btn-sm { height: 34px; padding: 0 14px; font-size: 13px; border-radius: var(--radius-xs); }
.btn-block { width: 100%; }

/* ═══ Hero ═══ */
.hero { position: relative; padding: 92px 0 72px; overflow: hidden; }
.hero::before {
  content: ''; position: absolute; inset: -20% 30% auto -10%; height: 520px;
  background: radial-gradient(closest-side, var(--cyan-glow), transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: ''; position: absolute; inset: auto -10% -30% 35%; height: 460px;
  background: radial-gradient(closest-side, rgba(34, 197, 94, .14), transparent 70%);
  pointer-events: none;
}
.hero > .wrap { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: var(--radius-pill); font-size: 12.5px; font-weight: 600;
  background: var(--cyan-soft); color: var(--cyan-2); border: 1px solid var(--cyan-line);
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 3px var(--cyan-glow); }
.hero-badge.warm { background: rgba(245, 196, 81, .12); color: var(--gold); border-color: rgba(245, 196, 81, .32); }
.hero-badge.warm .dot { background: var(--gold); box-shadow: 0 0 0 3px rgba(245, 196, 81, .2); }
h1.hero-title {
  margin-top: 20px; font-size: clamp(32px, 5.6vw, 56px); line-height: 1.16;
  font-weight: 800; letter-spacing: -.03em;
}
h1.hero-title em { font-style: normal; color: var(--accent); }
h1.hero-title em.cyan { color: var(--cyan-2); }
.hero-sub { margin-top: 20px; font-size: clamp(15px, 2vw, 18px); color: var(--dim); max-width: 700px; }
.hero-cta { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin-top: 16px; font-size: 12.5px; color: var(--dim2); }
.hero-stats { margin-top: 52px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat {
  padding: 20px 18px; border-radius: var(--radius); background: var(--grad-card);
  border: 1px solid var(--line); transition: border-color .18s, transform .18s;
}
.stat:hover { border-color: var(--line-hi); transform: translateY(-2px); }
.stat-num { font-size: clamp(22px, 3vw, 30px); font-weight: 800; color: var(--accent); letter-spacing: -.02em; }
.stat-num.cyan { color: var(--cyan-2); }
.stat-label { margin-top: 4px; font-size: 13px; color: var(--dim); }
.stat-sub { margin-top: 2px; font-size: 11.5px; color: var(--dim2); }

/* ═══ Banner 轮播（参考 NodeXX 首页 swiper）═══ */
.banner-swiper {
  position: relative; margin-top: 0; border-radius: var(--radius-xl); overflow: hidden;
  border: 1px solid var(--line); background: var(--grad-card);
}
.banner-track { display: flex; transition: transform .5s cubic-bezier(.4, 0, .2, 1); }
.banner-slide { min-width: 100%; display: flex; align-items: center; gap: 28px; padding: 34px 38px; }
.banner-copy { flex: 1 1 auto; min-width: 0; }
.banner-tag {
  display: inline-block; padding: 3px 10px; border-radius: var(--radius-pill);
  font-size: 11px; font-weight: 800; letter-spacing: .06em;
  background: rgba(245, 196, 81, .14); color: var(--gold); border: 1px solid rgba(245, 196, 81, .3);
}
.banner-title { margin-top: 12px; font-size: clamp(20px, 3vw, 30px); font-weight: 800; letter-spacing: -.02em; line-height: 1.28; }
.banner-title em { font-style: normal; color: var(--cyan-2); }
.banner-desc { margin-top: 10px; font-size: 14.5px; color: var(--dim); max-width: 560px; }
.banner-cta { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }
.banner-art { flex: 0 0 auto; width: 200px; }
.banner-art img, .banner-art svg { width: 100%; height: auto; }
.banner-dots { position: absolute; left: 0; right: 0; bottom: 14px; display: flex; gap: 7px; justify-content: center; }
.banner-dots button {
  width: 8px; height: 8px; border-radius: 50%; border: none; padding: 0; cursor: pointer;
  background: var(--line-hi); transition: width .2s, background .2s;
}
.banner-dots button.on { width: 22px; border-radius: var(--radius-pill); background: var(--cyan); }
.banner-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); width: 36px; height: 36px;
  border-radius: 50%; border: 1px solid var(--line); background: rgba(10, 14, 19, .7);
  color: var(--text); cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 16px; line-height: 1;
}
.banner-arrow:hover { border-color: var(--cyan); color: var(--cyan-2); }
.banner-arrow.prev { left: 12px; } .banner-arrow.next { right: 12px; }

/* ═══ UnderlineTabs（参考 NodeXX 下划线 Tab）═══ */
.utabs { display: flex; gap: 26px; border-bottom: 1px solid var(--line); margin-top: 34px; overflow-x: auto; }
.utabs button {
  position: relative; background: none; border: none; cursor: pointer;
  padding: 12px 2px; font-size: 15px; font-weight: 600; color: var(--dim2); white-space: nowrap;
  transition: color .16s;
}
.utabs button:hover { color: var(--text); }
.utabs button.on { color: var(--text); }
.utabs button.on::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
  background: var(--cyan); border-radius: 2px;
}
.utab-panel { display: none; }
.utab-panel.on { display: block; animation: fadeUp .32s ease both; }

/* ═══ 卡片网格 ═══ */
.grid { display: grid; gap: 16px; margin-top: 44px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  padding: 24px; border-radius: var(--radius-lg); background: var(--grad-card);
  border: 1px solid var(--line); transition: border-color .18s, transform .18s, box-shadow .18s;
}
.card:hover { border-color: var(--cyan-line); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.card-icon {
  width: 42px; height: 42px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: var(--cyan-soft); color: var(--cyan-2); margin-bottom: 14px;
}
.card-icon svg { width: 22px; height: 22px; }
.card-icon.green { background: var(--accent-soft); color: var(--accent-2); }
.card-icon.gold { background: rgba(245, 196, 81, .13); color: var(--gold); }
.card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--dim); line-height: 1.72; }

/* 信任/安全卡片（参考 NodeXX safe* 四宫格） */
.safe-item {
  position: relative; overflow: hidden; padding: 28px 24px 26px;
  border-radius: var(--radius-lg); background: var(--grad-card); border: 1px solid var(--line);
  transition: border-color .2s, transform .2s;
}
.safe-item::after {
  content: ''; position: absolute; right: -30px; top: -30px; width: 130px; height: 130px;
  border-radius: 50%; background: radial-gradient(closest-side, var(--cyan-glow), transparent 72%);
  opacity: .6; transition: opacity .25s;
}
.safe-item:hover { border-color: var(--cyan-line); transform: translateY(-3px); }
.safe-item:hover::after { opacity: 1; }
.safe-item > * { position: relative; z-index: 1; }
.safe-item h3 { font-size: 16px; font-weight: 700; margin: 14px 0 8px; }
.safe-item p { font-size: 13.5px; color: var(--dim); line-height: 1.75; }

/* ═══ 定价 ═══ */
.pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 44px; align-items: stretch; }
.plan {
  position: relative; display: flex; flex-direction: column; gap: 6px;
  padding: 28px 24px; border-radius: var(--radius-lg);
  background: var(--grad-card); border: 1px solid var(--line);
  transition: border-color .18s, transform .18s, box-shadow .18s;
}
.plan:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.plan-hi { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-line), var(--shadow); }
.plan-tag {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #04120a; font-size: 11px; font-weight: 800;
  padding: 3px 12px; border-radius: var(--radius-pill); white-space: nowrap;
}
.plan-name { font-size: 15px; font-weight: 700; color: var(--dim); }
.plan-price { font-size: 36px; font-weight: 800; letter-spacing: -.03em; }
.plan-price small { font-size: 14px; font-weight: 600; color: var(--dim); margin-left: 4px; }
.plan-desc { font-size: 13px; color: var(--dim); min-height: 40px; }
.plan ul { list-style: none; margin: 14px 0 22px; display: flex; flex-direction: column; gap: 9px; }
.plan li { position: relative; padding-left: 22px; font-size: 13.5px; color: var(--text); }
.plan li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: 800; }
.plan .btn { margin-top: auto; }

/* 合伙人档位卡 */
.tier { position: relative; display: flex; flex-direction: column; gap: 8px; padding: 30px 26px 28px;
  border-radius: var(--radius-xl); background: var(--grad-card); border: 1px solid var(--line);
  transition: border-color .2s, transform .2s, box-shadow .2s; }
.tier:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.tier-hi { border-color: var(--cyan); box-shadow: 0 0 0 1px var(--cyan-line), var(--shadow); }
.tier-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  padding: 4px 14px; border-radius: var(--radius-pill); font-size: 11px; font-weight: 800; white-space: nowrap;
  background: var(--cyan); color: #04161a; }
.tier-name { font-size: 17px; font-weight: 800; }
.tier-price { font-size: 34px; font-weight: 800; letter-spacing: -.03em; color: var(--cyan-2); }
.tier-price small { font-size: 13px; color: var(--dim); font-weight: 600; margin-left: 4px; }
.tier-split { display: flex; gap: 8px; font-size: 12px; color: var(--dim2); }
.tier-split b { color: var(--text); }
.tier ul { list-style: none; margin: 16px 0 20px; display: flex; flex-direction: column; gap: 9px; flex: 1; }
.tier li { position: relative; padding-left: 22px; font-size: 13.5px; color: var(--dim); line-height: 1.7; }
.tier li::before { content: '✓'; position: absolute; left: 0; color: var(--cyan); font-weight: 800; }
.tier li.strong { color: var(--text); font-weight: 600; }

/* ═══ 步骤 ═══ */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 44px; }
.step { padding: 24px; border-radius: var(--radius-lg); background: var(--grad-card); border: 1px solid var(--line); }
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 9px; background: var(--cyan-soft);
  color: var(--cyan-2); font-weight: 800; font-size: 14px; margin-bottom: 12px;
}
.step h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.step p { font-size: 13.5px; color: var(--dim); }

/* ═══ 表格 ═══ */
.compare-wrap { margin-top: 40px; overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--line); }
.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
.compare-table th, .compare-table td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare-table thead th { background: var(--card); font-size: 13px; font-weight: 700; color: var(--dim); white-space: nowrap; }
.compare-table tbody th { font-weight: 600; color: var(--text); white-space: nowrap; background: var(--bg-soft); width: 120px; }
.compare-table tbody td { color: var(--dim); }
.compare-table .col-us { color: var(--text); background: rgba(2, 183, 207, .06); font-weight: 500; }
.compare-table thead .col-us { color: var(--cyan-2); }
.compare-table tbody tr:last-child th, .compare-table tbody tr:last-child td { border-bottom: none; }
.tbl-note { margin-top: 12px; font-size: 12.5px; color: var(--dim2); }

/* 防撑破：网格/flex 子项默认 min-width:auto，长文本（URL、长英文串）会把轨道撑开导致横向溢出。
   给「内部网格」直属子项统一 min-width:0；真正需要横向滚动的容器另行保底宽度。 */
.pricing > *, .grid > *, .calc-grid > *, .calc-out > *, .steps > *, .entries > * { min-width: 0; }
.calc-out > * { overflow-wrap: anywhere; }
.tier, .plan, .card, .step, .safe-item, .entry { overflow-wrap: anywhere; }
.utabs button { min-width: max-content; }

/* ═══ 分成比例条 ═══ */
.rate-bar { display: flex; height: 34px; border-radius: var(--radius-sm); overflow: hidden; margin-top: 16px; border: 1px solid var(--line); }
.rate-bar span { display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; white-space: nowrap; }
.rate-bar .r1 { background: rgba(2, 183, 207, .26); color: var(--cyan-2); }
.rate-bar .r2 { background: rgba(245, 196, 81, .22); color: var(--gold); }
.rate-bar .r3 { background: rgba(34, 197, 94, .2); color: var(--accent-2); }
.rate-bar .r4 { background: var(--card-hi); color: var(--dim); }

/* ═══ 计算器 ═══ */
.calc {
  margin-top: 44px; padding: 30px; border-radius: var(--radius-xl);
  background: var(--grad-cyan); border: 1px solid var(--cyan-line);
}
.calc-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 30px; margin-top: 22px; }
.calc-field { margin-bottom: 18px; }
.calc-field label { display: block; font-size: 13px; font-weight: 700; color: var(--dim); margin-bottom: 8px; }
.calc-field input[type=range] { width: 100%; accent-color: var(--cyan); }
.calc-field input[type=number], .calc-field select {
  width: 100%; height: 42px; padding: 0 12px; border-radius: var(--radius-sm);
  background: var(--bg-soft); border: 1px solid var(--line); color: var(--text); font-size: 14px; font-family: inherit;
}
.calc-field input[type=number]:focus, .calc-field select:focus { outline: none; border-color: var(--cyan); }
.calc-val { float: right; font-size: 13px; font-weight: 700; color: var(--cyan-2); }
.calc-out { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-content: start; }
.calc-out .box { padding: 16px 18px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); }
.calc-out .box.hl { border-color: var(--cyan-line); background: rgba(2, 183, 207, .08); }
.calc-out .k { font-size: 12px; color: var(--dim2); }
.calc-out .v { font-size: 22px; font-weight: 800; letter-spacing: -.02em; color: var(--cyan-2); margin-top: 2px; }
.calc-out .v.green { color: var(--accent-2); }
.calc-out .v small { font-size: 12px; color: var(--dim); font-weight: 600; margin-left: 3px; }
.calc-foot { margin-top: 16px; font-size: 12px; color: var(--dim2); line-height: 1.8; }

/* ═══ 时间线（招募节奏）═══ */
.timeline { margin-top: 40px; display: flex; flex-direction: column; gap: 0; }
.tl-item { position: relative; padding: 0 0 26px 34px; border-left: 1px solid var(--line); }
.tl-item:last-child { border-left-color: transparent; padding-bottom: 0; }
.tl-item::before {
  content: ''; position: absolute; left: -5px; top: 6px; width: 9px; height: 9px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 0 4px var(--cyan-soft);
}
.tl-when { font-size: 12px; font-weight: 800; color: var(--cyan-2); letter-spacing: .04em; }
.tl-title { font-size: 15px; font-weight: 700; margin-top: 3px; }
.tl-desc { font-size: 13.5px; color: var(--dim); margin-top: 3px; }

/* ═══ 入口区 ═══ */
.entries { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 44px; }
.entry {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 26px 18px; border-radius: var(--radius-lg);
  background: var(--grad-card); border: 1px solid var(--line); text-align: center;
  transition: border-color .18s, transform .18s;
}
.entry:hover { border-color: var(--cyan); transform: translateY(-2px); }
.entry-qr { width: 132px; height: 132px; border-radius: 10px; background: #fff; padding: 6px; object-fit: contain; }
.entry-title { font-size: 14.5px; font-weight: 700; }
.entry-desc { font-size: 12.5px; color: var(--dim2); }

/* ═══ CTA ═══ */
.cta-box {
  padding: 52px 32px; border-radius: var(--radius-xl); text-align: center;
  background: var(--grad-brand);
  border: 1px solid var(--accent-line);
}
.cta-box.cyan { background: var(--grad-cyan); border-color: var(--cyan-line); }
.cta-box h2 { font-size: clamp(24px, 3.6vw, 34px); font-weight: 800; letter-spacing: -.02em; }
.cta-box p { margin-top: 12px; color: var(--dim); }
.cta-actions { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.cta-box .note { margin-top: 18px; font-size: 12.5px; color: var(--dim2); }

/* ═══ FAQ ═══ */
.faq { margin-top: 40px; display: flex; flex-direction: column; gap: 10px; max-width: 880px; }
.faq details {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--grad-card);
  overflow: hidden; transition: border-color .18s;
}
.faq details[open] { border-color: var(--cyan-line); }
.faq summary {
  cursor: pointer; padding: 17px 20px; font-size: 15px; font-weight: 600;
  list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--cyan); font-size: 20px; font-weight: 400; line-height: 1; }
.faq details[open] summary::after { content: '−'; }
.faq .faq-body { padding: 0 20px 18px; font-size: 14px; color: var(--dim); line-height: 1.8; }
.faq .faq-body a { color: var(--cyan-2); text-decoration: underline; text-underline-offset: 2px; }

/* ═══ 徽标 / 标签 ═══ */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px;
  border-radius: var(--radius-pill); font-size: 12.5px; color: var(--dim);
  background: var(--card); border: 1px solid var(--line);
}
.chip b { color: var(--text); font-weight: 700; }
.chip.on { color: var(--cyan-2); border-color: var(--cyan-line); background: var(--cyan-soft); }

/* ═══ Footer ═══ */
.site-footer { border-top: 1px solid var(--line); padding: 44px 0 30px; background: var(--bg-soft); }
.footer-top { display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; }
.footer-brand { max-width: 340px; }
.footer-brand .brand { margin-bottom: 10px; }
.footer-brand p { font-size: 13px; color: var(--dim2); line-height: 1.8; }
.footer-links { display: flex; gap: 48px; flex-wrap: wrap; }
.footer-col h4 { font-size: 13px; font-weight: 700; color: var(--text); margin-bottom: 12px; }
.footer-col a { display: block; font-size: 13px; color: var(--dim); padding: 4px 0; }
.footer-col a:hover { color: var(--cyan-2); }
.footer-bottom {
  margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between;
  font-size: 12px; color: var(--dim2);
}
.risk-note {
  margin-top: 18px; padding: 14px 16px; border-radius: var(--radius);
  background: rgba(245, 158, 11, .08); border: 1px solid rgba(245, 158, 11, .28);
  font-size: 12px; line-height: 1.8; color: #d9b06a;
}
.seo-cloud { margin-top: 16px; font-size: 12px; color: var(--dim2); line-height: 2; }
.seo-cloud a { color: var(--dim2); }
.seo-cloud a:hover { color: var(--cyan-2); }

/* ═══ 滚动揭示动画（参考 NodeXX revealSection）═══ */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .06s; } .reveal.d2 { transition-delay: .12s; }
.reveal.d3 { transition-delay: .18s; } .reveal.d4 { transition-delay: .24s; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }
.pulse { animation: pulse 2s ease-in-out infinite; }

/* ═══ 工具类 ═══ */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.mt-1 { margin-top: 10px; } .mt-2 { margin-top: 20px; } .mt-3 { margin-top: 32px; } .mt-4 { margin-top: 46px; }
.tc { text-align: center; } .mxa { margin-left: auto; margin-right: auto; }
.lead { font-size: clamp(15px, 2vw, 17px); color: var(--dim); max-width: 760px; }
.divider { height: 1px; background: var(--line); margin: 40px 0; border: 0; }
.tag-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }

/* ═══ 响应式 ═══ */
@media (max-width: 1080px) {
  .grid-4, .entries { grid-template-columns: repeat(2, 1fr); }
  .banner-art { display: none; }
}
@media (max-width: 980px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .pricing, .steps, .grid-4 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .entries { grid-template-columns: repeat(2, 1fr); }
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .calc-grid { grid-template-columns: 1fr; gap: 24px; }
  .banner-slide { padding: 26px 22px; }
  .banner-arrow { display: none; }
}
/* 低高度视口（横屏手机）：收紧抽屉行距，尽量一屏放下全部菜单项 */
@media (max-height: 520px) {
  .drawer { padding: 8px 20px 14px; gap: 0; }
  .drawer a { padding: 9px 4px; font-size: 14px; }
}

@media (max-width: 560px) {
  section { padding: 60px 0; }
  .hero { padding: 64px 0 48px; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .entries { grid-template-columns: 1fr 1fr; }
  .header-actions .btn-ghost { display: none; }
  .footer-links { gap: 28px; }
  .plan-price, .tier-price { font-size: 30px; }
  .calc { padding: 22px 18px; }
  .calc-out { grid-template-columns: 1fr; }
  .utabs { gap: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition: none !important; animation: none !important; }
}

/* ═══ 打印（长尾内容页友好）═══ */
@media print {
  .site-header, .site-footer, .banner-swiper, .banner-arrow, .cta-box { display: none; }
  body { background: #fff; color: #111; }
  a { color: #000; }
}