/* 设计令牌 —— 锚定官方 Logo 配色：深海军蓝 #004B8D 主色 + 青绿 #00C896 点缀
   体系：纯白底 + 暖灰带 + 海军蓝主色 + 能源绿强调，圆角统一 6px（标签用 pill） */
:root {
  --white: #ffffff;
  --band: #f5f4f1;
  --ink: #1a232b;
  --ink-2: #5b6670;
  --ink-3: #9aa3ac;
  --line: #e5e4e0;
  --navy: #0a4a8a;
  --navy-mid: #0f5a8a;
  --navy-dark: #07386a;
  --navy-deep: #042b52;
  --navy-light: #e8f2fc;
  --green: #00a878;
  --green-bright: #00c896;
  --green-dark: #087a55;
  --green-light: #e9f6f1;
  --amber-light: #fff6e5;
  --amber-mid: #f0d9a8;
  --amber-ink: #8a5a00;
  --radius: 6px;
  --pill: 999px;
  --container: 1184px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }

/* ---------------- 顶部导航 ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  height: 78px;
  gap: 40px;
}

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-mark svg { width: 20px; height: 20px; }
.brand-mark img { width: 34px; height: 34px; border-radius: var(--radius); object-fit: cover; }

.brand-text { font-size: 17px; font-weight: 700; letter-spacing: 0.01em; white-space: nowrap; }

.nav-links { display: flex; align-items: center; gap: 34px; margin-left: auto; }

.nav-links a {
  font-size: 15px;
  color: var(--ink-2);
  padding: 26px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.is-active { color: var(--ink); font-weight: 600; border-bottom-color: var(--green); }

.nav-cta { margin-left: 34px; flex-shrink: 0; }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span { display: block; width: 16px; height: 1.5px; background: var(--ink); position: relative; }
.nav-toggle span::before,
.nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 1.5px; background: var(--ink);
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

/* ---------------- 按钮 ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 26px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-dark); }
.btn-green { background: var(--green-dark); color: #fff; }
.btn-green:hover { background: #066344; }
.btn-outline { background: var(--white); color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--ink-3); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }

/* ---------------- 首屏 ---------------- */

.hero { padding: 76px 0 84px; }

.hero-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: center; }

.hero h1 {
  font-size: 50px;
  line-height: 1.22;
  letter-spacing: -0.01em;
  font-weight: 700;
  margin: 0 0 22px;
  white-space: pre-line;
}

.hero .sub {
  font-size: 17px;
  color: var(--ink-2);
  margin: 0 0 34px;
  max-width: 30em;
  line-height: 1.85;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
}

/* 首屏深色变体（海军蓝渐变带） */
.hero.dark {
  background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy-dark) 48%, var(--navy-mid) 100%);
  color: #fff;
  padding: 88px 0 92px;
}
.hero.dark h1 { color: #fff; }
.hero.dark .sub { color: rgba(255, 255, 255, 0.85); }
.hero.dark .hero-media img { box-shadow: 0 24px 60px rgba(2, 20, 40, 0.45); }
.hero.dark .btn-outline { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.55); }
.hero.dark .btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }

/* ---------------- 数据条 ---------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  border-top: 1px solid var(--line);
  margin-top: 24px;
  padding-top: 34px;
  gap: 24px;
}

.stat .value {
  font-size: 38px;
  font-weight: 700;
  color: var(--navy-dark);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
.stat .label { font-size: 14px; color: var(--ink-3); margin-top: 4px; }

/* 深色带内联数据条 */
.stat-row { display: flex; gap: 0; border-top: 1px solid rgba(255, 255, 255, 0.2); margin-top: 44px; padding-top: 28px; }
.stat-row .stat { flex: 1; padding-right: 34px; }
.stat-row .stat:last-child { padding-right: 0; }
.stat-row .stat .value {
  font-size: 34px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
.stat-row .stat .label { font-size: 13.5px; color: rgba(255, 255, 255, 0.72); margin-top: 5px; }

/* ---------------- 通用区块 ---------------- */

.section { padding: 84px 0; }
.section.band { background: var(--band); }
.section.dark { background: var(--navy-deep); color: #fff; }
.section.dark .section-title { color: #fff; }
.section.dark .section-lead { color: rgba(255, 255, 255, 0.78); }

.section-head { max-width: 720px; margin-bottom: 48px; }

.section-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--navy-dark);
  margin: 0 0 14px;
  letter-spacing: -0.005em;
}
.section-lead { font-size: 16px; color: var(--ink-2); margin: 0; }

/* ---------------- 特点铁轨（无卡片） ---------------- */

.rail { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 40px; }

.rail-item { border-top: 2px solid var(--green); padding-top: 22px; }
.rail-item h3 { font-size: 19px; margin: 0 0 10px; font-weight: 700; }
.rail-item p { margin: 0; font-size: 15px; color: var(--ink-2); }

/* ---------------- 核心业务卡片 ---------------- */

.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.biz-item {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.biz-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(7, 56, 106, 0.1);
  border-color: var(--navy-light);
}
.biz-item .no { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; color: var(--green); }
.biz-item h3 { font-size: 21px; margin: 8px 0 10px; }
.biz-item p { font-size: 14.5px; color: var(--ink-2); margin: 0 0 20px; line-height: 1.75; }
.biz-item .link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
}
.biz-item .link::after { content: "→"; transition: transform 0.15s ease; }
.biz-item:hover .link::after { transform: translateX(3px); }

/* ---------------- 流程步骤 ---------------- */

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 34px 40px; }
.step { border-top: 1px solid var(--line); padding-top: 20px; }
.step .no {
  font-size: 13px; font-weight: 700; color: var(--green); letter-spacing: 0.08em;
}
.step h4 { font-size: 17px; margin: 6px 0 8px; }
.step p { margin: 0; font-size: 14.5px; color: var(--ink-2); }

/* 横向流程轨道（首页 6 步） */
.process-track {
  counter-reset: pstep;
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.process-track::before {
  content: ""; position: absolute; left: 0; right: 0; top: 11px; height: 2px;
  background: var(--line);
}
.p-step { position: relative; }
.p-step .no {
  position: relative;
  z-index: 1;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--navy);
  color: var(--navy);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.p-step .no::after { content: counter(pstep); counter-increment: pstep; }
.p-step h4 { font-size: 16px; margin: 14px 0 6px; }
.p-step p { margin: 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.7; }

/* ---------------- 业务覆盖地图 ---------------- */

.coverage-layout { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 64px; align-items: start; }

.map-figure {
  padding: 20px 18px 8px;
  background: var(--green-light);
  border-radius: var(--radius);
}

.coverage-map { display: block; width: 100%; height: auto; }
.map-region { fill: #ffffff; stroke: var(--green-light); stroke-width: 1; }
.map-region.is-covered { fill: var(--green); stroke: var(--green); }
.map-region.is-planned { fill: #f5f1ea; stroke: #c9bfa8; stroke-width: 1; stroke-dasharray: 4 3; }
.map-dash { fill: #7e948b; }
.map-dot { fill: var(--green-dark); }
.map-label {
  font-size: 12px;
  font-weight: 600;
  fill: var(--ink);
  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 3px;
  stroke-linejoin: round;
}

.map-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--ink-2);
}
.map-legend-item { display: inline-flex; align-items: center; gap: 8px; }
.swatch { width: 14px; height: 14px; border-radius: 4px; background: #ffffff; border: 1px solid var(--line); }
.swatch.is-covered { background: var(--green); border-color: var(--green); }
.swatch.is-planned { background: #f5f1ea; border-color: #c9bfa8; border-style: dashed; }

.map-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 22px;
  border-top: 1px solid var(--line);
}
.map-list-item { flex: 1 1 130px; padding: 14px 20px 0; border-left: 1px solid var(--line); min-width: 0; }
.map-list-item:first-child { border-left: none; padding-left: 0; }
.map-list-item .name { font-size: 17px; font-weight: 700; }
.map-list-item .note { font-size: 13px; color: var(--ink-3); margin-top: 2px; }
.map-list-title {
  flex: 1 1 100%;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  padding: 22px 0 0;
}

/* ---------------- 整幅图片带 ---------------- */

.full-bleed { margin-top: 56px; }
.full-bleed img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
}

/* ---------------- 深色数据 ---------------- */

.dark-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; }
.dark-stat .value {
  font-size: 40px; font-weight: 700; line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.dark-stat .label { font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-top: 6px; }
.dark-stat .data-tag { margin-top: 10px; }

/* 参数规格表（单站模型 / 测算参数） */
.spec-list { list-style: none; margin: 0; padding: 0; }
.spec-list li {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.spec-list li:last-child { border-bottom: 1px solid var(--line); }
.spec-list .k { flex: 0 0 130px; font-size: 13.5px; color: var(--ink-3); }
.spec-list .v { flex: 1 1 auto; font-size: 17px; font-weight: 600; min-width: 140px; }
.spec-list .data-tag { flex-shrink: 0; }

/* ---------------- 时间轴 ---------------- */

.timeline { position: relative; margin-top: 56px; padding-top: 36px; }
.timeline::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: rgba(255, 255, 255, 0.28);
}
.timeline-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; }
.timeline-item { position: relative; padding-top: 26px; }
.timeline-item::before {
  content: ""; position: absolute; left: 0; top: -6px; width: 1px; height: 18px;
  background: rgba(255, 255, 255, 0.5);
}
.timeline-item .year { font-size: 14px; color: rgba(255, 255, 255, 0.7); }
.timeline-item .title { font-size: 20px; font-weight: 700; margin: 4px 0 8px; }
.timeline-item .desc { font-size: 14.5px; color: rgba(255, 255, 255, 0.78); margin: 0; }
.timeline-item .invest { font-size: 13px; color: rgba(255, 255, 255, 0.6); margin-top: 8px; }
.timeline-item .data-tag { margin-top: 10px; }

/* ---------------- 合作模式（旧） ---------------- */

.mode-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; }
.mode { border-top: 2px solid var(--green); padding-top: 24px; }
.mode h3 { font-size: 22px; margin: 0 0 10px; }
.mode .desc { color: var(--ink-2); margin: 0 0 16px; font-size: 15px; }
.mode ul { list-style: none; margin: 0 0 16px; padding: 0; }
.mode li { font-size: 15px; color: var(--ink-2); padding-left: 18px; position: relative; margin-bottom: 6px; }
.mode li::before {
  content: ""; position: absolute; left: 0; top: 12px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--green);
}
.mode .fit { font-size: 13.5px; color: var(--ink-3); border-top: 1px solid var(--line); padding-top: 12px; }

/* 合作模式对比卡片 */
.mode-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.mode-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 32px;
}
.mode-card.is-featured { border-color: var(--green); box-shadow: 0 0 0 3px var(--green-light); }
.mode-card .tag {
  align-self: flex-start;
  padding: 3px 12px;
  border-radius: var(--pill);
  font-size: 12.5px;
  font-weight: 600;
  background: var(--green-light);
  color: var(--green-dark);
  margin-bottom: 14px;
}
.mode-card.is-featured .tag { background: var(--green); color: #fff; }
.mode-card h3 { font-size: 22px; margin: 0 0 10px; }
.mode-card .desc { color: var(--ink-2); margin: 0 0 18px; font-size: 15px; }
.mode-card ul { list-style: none; margin: 0 0 18px; padding: 0; }
.mode-card li { font-size: 15px; color: var(--ink-2); padding-left: 18px; position: relative; margin-bottom: 8px; }
.mode-card li::before {
  content: ""; position: absolute; left: 0; top: 12px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--green);
}
.mode-card .fit {
  font-size: 13.5px;
  color: var(--ink-3);
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-bottom: 20px;
}
.mode-card .mode-cta { margin-top: auto; }

/* ---------------- 表单 ---------------- */

.lead-section { background: var(--green-light); }

.lead-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px; align-items: start; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 600; color: var(--ink-2); }
.field .req { color: var(--green-dark); margin-left: 3px; }

.field input,
.field select,
.field textarea {
  width: 100%;
  font-family: var(--font);
  font-size: 15px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.field textarea { resize: vertical; min-height: 96px; line-height: 1.7; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(0, 168, 120, 0.12); }
.field .err { font-size: 12.5px; color: #b3261e; display: none; }
.field.has-error input,
.field.has-error select,
.field.has-error textarea { border-color: #d93025; }
.field.has-error .err { display: block; }

.form-foot { grid-column: 1 / -1; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-note { font-size: 12.5px; color: var(--ink-3); margin: 0; }

.form-result { grid-column: 1 / -1; display: none; padding: 14px 16px; border-radius: var(--radius); font-size: 14.5px; }
.form-result.ok { display: block; background: var(--white); border: 1px solid #b8e0c9; color: var(--green-dark); }
.form-result.bad { display: block; background: var(--white); border: 1px solid #f0c3bd; color: #b3261e; }

/* ---------------- 联系信息 ---------------- */

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.info-list { list-style: none; margin: 0; padding: 0; }
.info-list li { padding: 20px 0; border-bottom: 1px solid var(--line); }
.info-list li:first-child { border-top: 1px solid var(--line); }
.info-list .k { font-size: 12.5px; color: var(--ink-3); letter-spacing: 0.06em; }
.info-list .v { font-size: 19px; font-weight: 600; margin-top: 3px; }
.info-list a.v { color: var(--green-dark); }
.qr { margin-top: 28px; }
.qr img { width: 132px; border-radius: var(--radius); border: 1px solid var(--line); }
.qr .cap { font-size: 12.5px; color: var(--ink-3); margin-top: 8px; }

/* ---------------- 数据标签（四类口径） ---------------- */

.data-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 11px;
  border-radius: var(--pill);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
  border: 1px solid transparent;
}
.data-tag.is-real { background: var(--green-light); color: var(--green-dark); border-color: #b8e0c9; }
.data-tag.is-calc { background: var(--amber-light); color: var(--amber-ink); border-color: var(--amber-mid); }
.data-tag.is-goal { background: var(--navy-light); color: var(--navy-dark); border-color: #c3d8ef; }
.data-tag.is-future { background: #f1f2f4; color: var(--ink-2); border-color: #e0e2e6; }
.data-tag.on-dark { background: rgba(255, 255, 255, 0.14); color: #fff; border-color: rgba(255, 255, 255, 0.35); }
.data-tag.on-dark.is-calc { background: rgba(255, 197, 84, 0.16); color: #ffd9a0; border-color: rgba(255, 197, 84, 0.45); }

/* ---------------- 提示条 ---------------- */

.notice {
  border-left: 3px solid var(--green);
  background: var(--white);
  padding: 14px 18px;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 13.5px;
  color: var(--ink-2);
  margin-top: 32px;
}

.prose p { margin: 0 0 18px; color: var(--ink-2); white-space: pre-line; }

/* ---------------- 页脚（浅色主体 + 深蓝底条分级） ---------------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--white);
  padding-top: 48px;
}
.footer-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: start; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo img { height: 84px; width: auto; }
.footer-brand .name { font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.footer-brand .slogan { font-size: 13.5px; color: var(--ink-3); max-width: 30em; }
.footer-meta { font-size: 13.5px; color: var(--ink-2); text-align: right; }
.footer-meta .hotline { font-size: 17px; color: var(--navy); font-weight: 600; margin-bottom: 6px; }
.footer-meta .hotline a { color: var(--navy); }
.footer-meta > div { margin-bottom: 6px; }
.footer-meta a:hover { color: var(--navy-dark); }
.footer-bottom {
  margin-top: 44px;
  background: var(--navy-deep);
  padding: 16px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.6);
}
.footer-bottom a:hover { color: #fff; }

/* ---------------- 内页通用块 ---------------- */

.page-head { padding: 0 0 12px; }
.block { margin-top: 64px; }
.block-sm { margin-top: 40px; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.two-col.media { align-items: center; grid-template-columns: 1.05fr 1fr; }
.two-col img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); }

.milestone-list { list-style: none; margin: 0; padding: 0; }
.milestone-list li { display: flex; gap: 28px; padding: 18px 0; border-top: 1px solid var(--line); }
.milestone-list .year { flex: 0 0 84px; font-weight: 700; color: var(--navy-dark); }

.note-list { list-style: none; margin: 0; padding: 0; }
.note-list li { padding: 14px 0; border-top: 1px solid var(--line); font-size: 15px; color: var(--ink-2); }
.note-list li:last-child { border-bottom: 1px solid var(--line); }

.strategy-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; }
.strategy { border-top: 1px solid var(--line); padding-top: 20px; }
.strategy .stage { font-size: 12.5px; letter-spacing: 0.08em; color: var(--green); font-weight: 700; }
.strategy h4 { font-size: 18px; margin: 6px 0 8px; }
.strategy p { margin: 0; font-size: 14.5px; color: var(--ink-2); }
.strategy .data-tag { margin-top: 10px; }

/* ---------------- 404 ---------------- */

.error-page { padding: 120px 0; text-align: center; }
.error-page h1 { font-size: 40px; margin: 0 0 12px; }
.error-page p { color: var(--ink-3); margin: 0 0 28px; }

/* ---------------- 响应式 ---------------- */

@media (max-width: 1024px) {
  .hero h1 { font-size: 42px; }
  .section-title { font-size: 30px; }
  .biz-grid { grid-template-columns: 1fr; }
  .process-track { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .container { padding: 0 20px; }

  .nav { height: 66px; gap: 16px; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .nav-links {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 66px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 18px;
    margin-left: 0;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 13px 0; border-bottom: none; border-left: 2px solid transparent; padding-left: 0; }
  .nav-links a.is-active { border-left-color: transparent; border-bottom: none; color: var(--navy-dark); }

  .hero { padding: 44px 0 52px; }
  .hero.dark { padding: 48px 0 56px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: 32px; line-height: 1.3; }
  .hero .sub { font-size: 15.5px; }

  .section { padding: 56px 0; }
  .section-title { font-size: 25px; }
  .section-head { margin-bottom: 32px; }

  .stat-row { flex-direction: column; gap: 22px; }
  .stat-row .stat { padding-right: 0; }

  .coverage-layout { grid-template-columns: 1fr; gap: 36px; }
  .map-figure { padding: 14px 12px 4px; }
  .map-marks { display: none; }
  .map-list { border-top: none; }
  .map-list-item { flex: 1 1 100%; border-left: none; padding: 12px 0; border-top: 1px solid var(--line); }
  .map-list-item:first-child { border-top: none; }

  .full-bleed img { aspect-ratio: 16 / 10; }

  .lead-grid, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .form-grid { grid-template-columns: 1fr; }

  .mode-compare { grid-template-columns: 1fr; }
  .process-track { grid-template-columns: 1fr 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-meta { text-align: left; }
  .rail { gap: 28px; }
  .dark-stat .value { font-size: 32px; }
  .stat .value { font-size: 30px; }

  .page-head { padding: 40px 0 8px; }
  .block { margin-top: 40px; }
  .two-col, .two-col.media { grid-template-columns: 1fr; gap: 32px; }
  .two-col.media img { order: -1; }
  .milestone-list li { gap: 16px; }
  .milestone-list .year { flex: 0 0 64px; }
}