/* ============================================================
   武汉洋码科技官网 — Terminal meets Editorial（产品化演绎）
   OKLCH 墨绿配色 / 衬线展示 + 等宽 UI / 克制动效
   全站公共样式：首页 + 产品详情页
   ============================================================ */
:root {
  --bg:        oklch(0.17 0.022 175);
  --bg-deep:   oklch(0.14 0.02 175);
  --surface:   oklch(0.21 0.024 175);
  --surface-2: oklch(0.25 0.026 175);
  --line:      oklch(0.32 0.024 175);
  --line-soft: oklch(0.27 0.02 175);
  --ink:       oklch(0.93 0.012 95);
  --ink-dim:   oklch(0.72 0.018 165);
  --ink-faint: oklch(0.55 0.02 165);
  --accent:    oklch(0.78 0.13 165);
  --accent-dim:oklch(0.6 0.09 165);
  --accent-glow: oklch(0.78 0.13 165 / 0.12);
  --warm:      oklch(0.8 0.14 85);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --mono: "SF Mono", "JetBrains Mono", "Fira Code", "Menlo", "Consolas", monospace;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --maxw: 1180px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: var(--accent); color: var(--bg-deep); }
a { color: inherit; text-decoration: none; }

/* ---- 背景网格 ---- */
body::before {
  content: "";
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.14;
  pointer-events: none;
  z-index: 0;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }

/* ---- 分区标签 ---- */
.sec-tag {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: 48px;
}
.sec-tag .num { font-family: var(--mono); font-size: 12px; color: var(--accent); letter-spacing: 0.14em; }
.sec-tag .rule { flex: 1; height: 1px; background: var(--line); }
.sec-tag .label { font-family: var(--mono); font-size: 12px; letter-spacing: 0.22em; color: var(--ink-faint); text-transform: uppercase; }

/* ---- 导航 ---- */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  border-bottom: 1px solid var(--line-soft);
  background: oklch(0.17 0.022 175 / 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav {
  max-width: var(--maxw); margin: 0 auto; padding: 0 32px;
  height: 68px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 34px; height: 34px;
  border: 1.5px solid var(--accent);
  display: grid; place-items: center;
  font-family: var(--serif); font-size: 16px; font-weight: 900;
  color: var(--accent);
  background: var(--accent-glow);
}
.logo-name { font-family: var(--serif); font-size: 19px; font-weight: 700; letter-spacing: 0.06em; }
.logo-sub { font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em; color: var(--ink-faint); display: block; margin-top: 1px; }
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links a {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.1em;
  color: var(--ink-dim);
  position: relative; padding: 4px 0;
  transition: color 0.25s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 1px; background: var(--accent);
  transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em;
  border: 1px solid var(--accent); color: var(--accent) !important;
  padding: 8px 20px !important;
  transition: background 0.25s, color 0.25s !important;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--accent); color: var(--bg-deep) !important; }

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 140px 0 100px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
  width: 100%;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.2em;
  color: var(--accent);
  border: 1px solid var(--line);
  padding: 8px 16px;
  margin-bottom: 32px;
  background: oklch(0.21 0.024 175 / 0.6);
}
.hero-eyebrow .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow);} 50% { opacity: 0.55; box-shadow: 0 0 0 6px var(--accent-glow);} }
h1.hero-title {
  font-family: var(--serif);
  font-size: clamp(42px, 5.6vw, 74px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: 0.01em;
  margin-bottom: 28px;
}
h1.hero-title em {
  font-style: normal;
  color: var(--accent);
}
.hero-desc {
  color: var(--ink-dim);
  font-size: 17px;
  max-width: 520px;
  margin-bottom: 44px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.1em;
  padding: 15px 32px;
  border: 1px solid var(--line);
  color: var(--ink);
  transition: all 0.3s ease;
  cursor: pointer;
  background: transparent;
  display: inline-flex; align-items: center; gap: 10px;
}
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--bg-deep); font-weight: 600; }
.btn-primary:hover { background: transparent; color: var(--accent); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---- Hero 数据指标行 ---- */
.hero-stats {
  display: flex; gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--line);
}
.hstat {
  padding: 24px 36px 4px 0;
  margin-right: 36px;
  border-right: 1px solid var(--line-soft);
  padding-right: 36px;
}
.hstat:last-child { border-right: none; }
.hstat b {
  font-family: var(--serif); font-size: 34px; font-weight: 900;
  color: var(--accent); display: block; line-height: 1.2;
}
.hstat b small { font-size: 16px; margin-left: 2px; }
.hstat span { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; color: var(--ink-faint); text-transform: uppercase; }

/* ---- 产品界面示意（卖家工作台） ---- */
.app-window {
  border: 1px solid var(--line);
  background: var(--bg-deep);
  box-shadow: 0 24px 64px oklch(0 0 0 / 0.45);
  overflow: hidden;
}
.app-chrome {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.app-dot { width: 11px; height: 11px; border-radius: 50%; }
.app-dot.r { background: oklch(0.65 0.18 25); }
.app-dot.y { background: var(--warm); }
.app-dot.g { background: oklch(0.75 0.15 150); }
.app-title { margin-left: auto; font-family: var(--mono); font-size: 11px; color: var(--ink-faint); letter-spacing: 0.1em; }
.app-body { display: grid; grid-template-columns: 108px 1fr; min-height: 340px; }
.app-body.no-side { grid-template-columns: 1fr; }
.app-side {
  border-right: 1px solid var(--line);
  padding: 16px 0;
  background: oklch(0.16 0.02 175);
}
.app-side span {
  display: block;
  padding: 8px 16px;
  font-size: 12px;
  color: var(--ink-faint);
  border-left: 2px solid transparent;
}
.app-side span.on { color: var(--accent); border-left-color: var(--accent); background: var(--accent-glow); }
.app-main { padding: 18px 20px; }
.app-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.kpi {
  border: 1px solid var(--line-soft);
  background: var(--surface);
  padding: 10px 12px;
}
.kpi b { display: block; font-family: var(--mono); font-size: 16px; font-weight: 600; letter-spacing: 0.02em; }
.kpi small { font-size: 11px; color: var(--ink-faint); }
.kpi i { font-style: normal; font-family: var(--mono); font-size: 10px; color: var(--accent); margin-left: 4px; }
.app-chart {
  border: 1px solid var(--line-soft);
  background: var(--surface);
  padding: 14px 14px 10px;
  margin-bottom: 14px;
}
.chart-label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; color: var(--ink-faint); margin-bottom: 10px; display: flex; justify-content: space-between; }
.bars { display: flex; align-items: flex-end; gap: 6px; height: 76px; }
.bars i {
  flex: 1;
  background: linear-gradient(to top, var(--accent-dim), var(--accent));
  transform-origin: bottom;
  transform: scaleY(0.15);
  opacity: 0.85;
  transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.app-window.in .bars i { transform: scaleY(1); }
.bars i:nth-child(1) { height: 34%; transition-delay: 0.05s; }
.bars i:nth-child(2) { height: 48%; transition-delay: 0.1s; }
.bars i:nth-child(3) { height: 40%; transition-delay: 0.15s; }
.bars i:nth-child(4) { height: 62%; transition-delay: 0.2s; }
.bars i:nth-child(5) { height: 55%; transition-delay: 0.25s; }
.bars i:nth-child(6) { height: 74%; transition-delay: 0.3s; }
.bars i:nth-child(7) { height: 66%; transition-delay: 0.35s; }
.bars i:nth-child(8) { height: 82%; transition-delay: 0.4s; }
.bars i:nth-child(9) { height: 70%; transition-delay: 0.45s; }
.bars i:nth-child(10) { height: 92%; transition-delay: 0.5s; }
.app-rows { display: grid; gap: 6px; }
.app-row {
  display: flex; justify-content: space-between; align-items: center;
  border: 1px solid var(--line-soft);
  background: var(--surface);
  padding: 8px 12px;
  font-size: 11.5px;
  color: var(--ink-dim);
}
.app-row .tag { font-family: var(--mono); font-size: 10px; color: var(--accent); border: 1px solid var(--line); padding: 1px 8px; }
.app-caption { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; color: var(--ink-faint); text-align: right; margin-top: 10px; }

/* ---- 客服会话示意（产品页） ---- */
.chat { display: grid; gap: 12px; padding: 4px 0; }
.bubble {
  max-width: 82%;
  border: 1px solid var(--line-soft);
  background: var(--surface);
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--ink-dim);
  line-height: 1.7;
}
.bubble .lang { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; color: var(--ink-faint); display: block; margin-bottom: 4px; }
.bubble .trans { display: block; margin-top: 6px; padding-top: 6px; border-top: 1px dashed var(--line); color: var(--accent); font-size: 12px; }
.bubble.right { justify-self: end; background: var(--accent-glow); border-color: var(--accent-dim); color: var(--ink); }
.chat-meta { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; color: var(--ink-faint); text-align: center; }

/* ---- 订单表示意（产品页） ---- */
.app-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.app-table th {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  color: var(--ink-faint); text-align: left;
  padding: 8px 10px; border-bottom: 1px solid var(--line);
  text-transform: uppercase;
}
.app-table td { padding: 10px; border-bottom: 1px solid var(--line-soft); color: var(--ink-dim); }
.app-table .st { font-family: var(--mono); font-size: 10px; padding: 2px 8px; border: 1px solid var(--line); }
.app-table .st.ok { color: var(--accent); border-color: var(--accent-dim); }
.app-table .st.warn { color: var(--warm); border-color: oklch(0.6 0.1 85); }

/* ---- 平台跑马灯 ---- */
.ticker {
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding: 22px 0;
  overflow: hidden;
  background: oklch(0.15 0.02 175 / 0.7);
  position: relative; z-index: 1;
}
.ticker-track {
  display: flex; gap: 72px;
  width: max-content;
  animation: marquee 32s linear infinite;
}
.ticker-track span {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.22em;
  color: var(--ink-faint);
  display: flex; align-items: center; gap: 72px;
  white-space: nowrap;
}
.ticker-track span::after { content: "/"; color: var(--accent-dim); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---- 通用 Section ---- */
section { padding: 110px 0; position: relative; }
section + section { border-top: 1px solid var(--line-soft); }
.sec-head {
  font-family: var(--serif);
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
}
.sec-sub { color: var(--ink-dim); max-width: 640px; margin-bottom: 64px; font-size: 16px; }

/* ---- 核心产品 ---- */
.pdt-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.pdt-card {
  background: var(--bg);
  padding: 44px 36px 40px;
  display: flex; flex-direction: column;
  position: relative;
  transition: background 0.35s ease;
}
.pdt-card:hover { background: var(--surface); }
.pdt-icon {
  width: 52px; height: 52px;
  border: 1px solid var(--accent);
  background: var(--accent-glow);
  display: grid; place-items: center;
  font-family: var(--serif); font-size: 24px; font-weight: 900;
  color: var(--accent);
  margin-bottom: 26px;
}
.pdt-en { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; color: var(--ink-faint); text-transform: uppercase; margin-bottom: 8px; }
.pdt-card h3 { font-family: var(--serif); font-size: 24px; font-weight: 800; margin-bottom: 14px; letter-spacing: 0.02em; }
.pdt-card > p { font-size: 14px; color: var(--ink-dim); margin-bottom: 22px; }
.pdt-feats { list-style: none; display: grid; gap: 10px; margin-bottom: 30px; flex: 1; }
.pdt-feats li {
  font-size: 13.5px; color: var(--ink-dim);
  padding-left: 18px; position: relative;
}
.pdt-feats li::before {
  content: "—";
  position: absolute; left: 0;
  color: var(--accent);
  font-family: var(--mono);
}
.pdt-link {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em;
  color: var(--accent);
  display: inline-flex; align-items: center; gap: 8px;
  border-top: 1px solid var(--line-soft);
  padding-top: 20px;
  transition: gap 0.3s ease;
}
.pdt-card:hover .pdt-link { gap: 14px; }
.pdt-status {
  position: absolute; top: 20px; right: 20px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  color: var(--warm);
  border: 1px solid oklch(0.55 0.1 85);
  padding: 3px 10px;
}

/* ---- 服务卡片 ---- */
.svc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line);
  background: var(--line);
  gap: 1px;
}
.svc-card {
  background: var(--bg);
  padding: 40px 34px 44px;
  position: relative;
  transition: background 0.35s ease;
  overflow: hidden;
}
.svc-card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
.svc-card:hover { background: var(--surface); }
.svc-card:hover::before { transform: scaleX(1); }
.svc-num {
  font-family: var(--mono); font-size: 12px; color: var(--accent);
  letter-spacing: 0.14em; margin-bottom: 22px; display: block;
}
.svc-card h3 {
  font-family: var(--serif); font-size: 21px; font-weight: 700;
  margin-bottom: 12px; letter-spacing: 0.02em;
}
.svc-card p { font-size: 14px; color: var(--ink-dim); line-height: 1.85; }
.svc-tags { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.svc-tags i {
  font-style: normal; font-family: var(--mono); font-size: 11px;
  color: var(--ink-faint); border: 1px solid var(--line-soft);
  padding: 3px 10px; letter-spacing: 0.05em;
}

/* ---- 园区合作 ---- */
.partner-strip {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-top: 48px;
  align-items: center;
}
.partner-strip .plabel {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em;
  color: var(--ink-faint); margin-right: 8px;
}
.partner-strip span.tag {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  padding: 8px 18px;
  transition: border-color 0.25s, color 0.25s;
}
.partner-strip span.tag:hover { border-color: var(--accent); color: var(--accent); }
.coop-cta {
  margin-top: 48px;
  border: 1px solid var(--accent);
  background: var(--accent-glow);
  padding: 36px 40px;
  display: flex; justify-content: space-between; align-items: center; gap: 32px;
  flex-wrap: wrap;
}
.coop-cta h3 { font-family: var(--serif); font-size: clamp(20px, 2.4vw, 28px); font-weight: 800; }
.coop-cta h3 span { color: var(--accent); }

/* ---- 结尾 CTA ---- */
.final-cta { text-align: center; padding: 130px 0; }
.final-cta .sec-tag { justify-content: center; }
.final-cta h2 {
  font-family: var(--serif);
  font-size: clamp(34px, 4.6vw, 58px);
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 24px;
}
.final-cta h2 em { font-style: normal; color: var(--accent); }
.final-cta p { color: var(--ink-dim); max-width: 560px; margin: 0 auto 44px; }
.final-cta .hero-actions { justify-content: center; }

/* ---- 流程 ---- */
.flow-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.flow-step {
  padding: 44px 28px;
  border-left: 1px solid var(--line);
  position: relative;
  transition: background 0.3s;
}
.flow-step:first-child { border-left: none; }
.flow-step:hover { background: var(--surface); }
.flow-step .idx {
  font-family: var(--serif); font-size: 44px; font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent-dim);
  margin-bottom: 20px; line-height: 1;
  transition: color 0.3s;
}
.flow-step:hover .idx { color: var(--accent); -webkit-text-stroke: 1px var(--accent); }
.flow-step h4 { font-family: var(--serif); font-size: 19px; margin-bottom: 10px; }
.flow-step p { font-size: 13.5px; color: var(--ink-dim); }

/* ---- 关于 / 经营范围 ---- */
.about-grid {
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 72px; align-items: start;
}
.about-facts { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.fact { background: var(--bg); padding: 24px 28px; display: flex; justify-content: space-between; align-items: baseline; gap: 20px; }
.fact dt { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; color: var(--ink-faint); }
.fact dd { font-family: var(--serif); font-size: 17px; font-weight: 700; text-align: right; }
.scope-box {
  border: 1px solid var(--line);
  background: var(--bg-deep);
}
.scope-head {
  padding: 16px 26px; border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: baseline;
  background: var(--surface);
}
.scope-head b { font-family: var(--serif); font-size: 15px; font-weight: 700; letter-spacing: 0.04em; }
.scope-head span { font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; color: var(--ink-faint); text-transform: uppercase; }
.scope-list { display: grid; gap: 1px; background: var(--line-soft); }
.scope-item {
  background: var(--bg-deep);
  padding: 18px 26px;
  display: grid; grid-template-columns: 108px 1fr; gap: 18px;
  align-items: baseline;
  transition: background 0.3s;
}
.scope-item:hover { background: var(--surface); }
.scope-item h5 { font-family: var(--serif); font-size: 15px; font-weight: 700; color: var(--accent); letter-spacing: 0.04em; }
.scope-item p { font-size: 13.5px; color: var(--ink-dim); line-height: 1.9; }
.scope-foot {
  padding: 14px 26px;
  border-top: 1px solid var(--line);
  font-size: 12px; color: var(--ink-faint);
}

/* ---- 联系 ---- */
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.contact-lines { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 0; }
.cline { background: var(--bg); padding: 22px 28px; display: flex; gap: 20px; align-items: baseline; }
.cline .k { font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em; color: var(--ink-faint); min-width: 84px; }
.cline .v { font-size: 15.5px; }
.cline .v a { border-bottom: 1px solid var(--line); transition: color 0.25s, border-color 0.25s; }
.cline .v a:hover { color: var(--accent); border-color: var(--accent); }
.cline .v small { color: var(--ink-faint); font-size: 12px; }

/* ---- 产品详情页 ---- */
.pdt-hero { padding: 160px 0 90px; }
.pdt-hero .hero-grid { grid-template-columns: 1fr 1fr; }
.back-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em;
  color: var(--ink-faint);
  margin-bottom: 32px;
  transition: color 0.25s;
}
.back-link:hover { color: var(--accent); }
.beta-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  color: var(--warm);
  border: 1px solid oklch(0.55 0.1 85);
  padding: 6px 14px;
  margin-bottom: 28px;
}
.beta-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--warm); }
h1.pdt-title {
  font-family: var(--serif);
  font-size: clamp(36px, 4.6vw, 60px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
}
h1.pdt-title em { font-style: normal; color: var(--accent); }
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.feat-item {
  background: var(--bg);
  padding: 36px 30px;
  transition: background 0.3s;
}
.feat-item:hover { background: var(--surface); }
.feat-item .fi {
  font-family: var(--serif); font-size: 26px; font-weight: 900; color: var(--accent);
  display: block; margin-bottom: 16px;
}
.feat-item h4 { font-family: var(--serif); font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feat-item p { font-size: 13.5px; color: var(--ink-dim); }
.audience-strip {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  margin-top: 56px;
}
.audience-strip .plabel { font-family: var(--mono); font-size: 12px; letter-spacing: 0.16em; color: var(--ink-faint); margin-right: 8px; }
.audience-strip span.tag {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--ink-dim); border: 1px solid var(--line); padding: 8px 18px;
  transition: border-color 0.25s, color 0.25s;
}
.audience-strip span.tag:hover { border-color: var(--accent); color: var(--accent); }
.rel-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.rel-card {
  background: var(--bg); padding: 36px 32px;
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  transition: background 0.3s;
}
.rel-card:hover { background: var(--surface); }
.rel-card .rel-en { font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em; color: var(--ink-faint); text-transform: uppercase; }
.rel-card h4 { font-family: var(--serif); font-size: 20px; font-weight: 800; margin-top: 6px; }
.rel-card .arrow { font-family: var(--mono); color: var(--accent); font-size: 20px; transition: transform 0.3s; }
.rel-card:hover .arrow { transform: translateX(6px); }

/* ---- Footer ---- */
footer { border-top: 1px solid var(--line); padding: 56px 0 44px; background: var(--bg-deep); }
.foot-grid { display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; flex-wrap: wrap; }
.foot-note { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); letter-spacing: 0.08em; line-height: 2.2; }
.foot-note a { color: var(--ink-dim); border-bottom: 1px solid var(--line); }
.foot-note a:hover { color: var(--accent); border-color: var(--accent); }
.foot-serif { font-family: var(--serif); font-size: clamp(26px, 3.4vw, 40px); font-weight: 900; line-height: 1.4; }
.foot-serif span { color: var(--accent); }

/* ---- 滚动进场 ---- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; } .reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; } .reveal.d4 { transition-delay: 0.32s; }

/* ---- 响应式 ---- */
@media (max-width: 960px) {
  .hero-grid, .about-grid, .contact-inner { grid-template-columns: 1fr; gap: 48px; }
  .pdt-grid, .svc-grid, .feat-grid, .rel-grid { grid-template-columns: 1fr 1fr; }
  .flow-grid { grid-template-columns: 1fr 1fr; }
  .flow-step:nth-child(odd) { border-left: none; }
  .flow-step:nth-child(n+3) { border-top: 1px solid var(--line); }
  .nav-links a:not(.nav-cta) { display: none; }
  section { padding: 80px 0; }
  .hero { padding-top: 120px; }
  .pdt-hero .hero-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-wrap: wrap; gap: 20px 0; }
  .hstat { flex: 1 1 40%; border-right: none; padding-right: 0; margin-right: 0; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 20px; }
  .pdt-grid, .svc-grid, .flow-grid, .feat-grid, .rel-grid { grid-template-columns: 1fr; }
  .flow-step { border-left: none; }
  .flow-step:nth-child(n+2) { border-top: 1px solid var(--line); }
  .fact dd { font-size: 15px; }
  .scope-item { grid-template-columns: 1fr; gap: 6px; }
}