/* ============================================================
   北辰策划 BEICHEN PLANNING — 全站共享样式
   ============================================================ */

/* ---------- 字体（全部本地化） ---------- */
@font-face {
  font-family: 'Noto Sans SC';
  src: url('../fonts/noto-sans-sc-cjk-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans SC';
  src: url('../fonts/noto-sans-sc-cjk-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans SC';
  src: url('../fonts/noto-sans-sc-latin-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2000-206F, U+2070-209F, U+20A0-20BF, U+2190-21FF;
}
@font-face {
  font-family: 'Noto Sans SC';
  src: url('../fonts/noto-sans-sc-latin-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2000-206F, U+2070-209F, U+20A0-20BF, U+2190-21FF;
}
@font-face {
  font-family: 'Noto Serif SC';
  src: url('../fonts/noto-serif-sc-cjk-600.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Serif SC';
  src: url('../fonts/noto-serif-sc-cjk-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Serif SC';
  src: url('../fonts/noto-serif-sc-latin-600.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+2000-206F, U+2070-209F, U+20A0-20BF, U+2190-21FF;
}

/* ---------- 设计令牌 ---------- */
:root {
  --navy-900: #0A1626;
  --navy-800: #0E1F33;
  --navy-700: #132A44;
  --navy-600: #1B3A5C;
  --navy-500: #26517D;
  --gold: #C9A24B;
  --gold-light: #D9B96A;
  --gold-pale: #E8D5A0;
  --paper: #F5F4EF;
  --paper-2: #ECEAE1;
  --card: #FFFFFF;
  --ink: #1C2430;
  --ink-soft: #4A5560;
  --muted: #79828D;
  --line: rgba(14, 31, 51, 0.12);
  --line-dark: rgba(255, 255, 255, 0.14);
  --serif: 'Noto Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
  --sans: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --shadow-card: 0 1px 2px rgba(10, 22, 38, 0.05), 0 12px 32px -16px rgba(10, 22, 38, 0.18);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
::selection { background: rgba(201, 162, 75, 0.28); }

:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 星点底纹 */
.starfield {
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.10) 1px, transparent 1.4px),
    radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1.4px);
  background-size: 26px 26px, 42px 42px;
  background-position: 0 0, 13px 17px;
}

/* ---------- 章节框架 ---------- */
.section { padding: clamp(72px, 9vw, 118px) 0; }
.section-dark {
  background: var(--navy-900);
  color: #E8ECF1;
}
.section-tight { padding: clamp(56px, 7vw, 92px) 0; }

.section-head { max-width: 720px; margin-bottom: clamp(40px, 5vw, 64px); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .kicker { color: var(--gold); }
.section-head h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1.32;
  margin: 14px 0 16px;
  color: var(--navy-800);
}
.section-dark .section-head h2 { color: #F2F4F7; }
.section-head p { color: var(--ink-soft); font-size: 16px; }
.section-dark .section-head p { color: #A9B3BF; }
.section-head .kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.32em;
  font-weight: 500;
}
.section-head .kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gold);
}
.section-head.center .kicker::after {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 30px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: 3px;
  border: 1px solid transparent;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
}
.btn svg { flex: none; }
.btn-gold { background: var(--gold); color: var(--navy-900); }
.btn-gold:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 14px 30px -14px rgba(201, 162, 75, 0.7); }
.btn-ghost { border-color: rgba(10, 22, 38, 0.32); color: var(--navy-800); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.btn-ghost-light { border-color: rgba(255, 255, 255, 0.42); color: #F2F4F7; }
.btn-ghost-light:hover { border-color: var(--gold); color: var(--gold-light); transform: translateY(-2px); }

/* ---------- 页头 / 导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(10, 22, 38, 0.96);
  border-bottom-color: rgba(255, 255, 255, 0.10);
  box-shadow: 0 10px 30px -18px rgba(0, 0, 0, 0.55);
}
.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { width: 34px; height: 34px; flex: none; }
.brand-name {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-name .cn {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 20px;
  color: #F6F7F9;
  letter-spacing: 0.08em;
}
.brand-name .en {
  font-size: 9.5px;
  letter-spacing: 0.34em;
  color: rgba(232, 237, 241, 0.55);
  margin-top: 4px;
  font-weight: 500;
}
.main-nav { display: flex; align-items: center; gap: 34px; }
.main-nav a {
  font-size: 15px;
  color: rgba(242, 244, 247, 0.82);
  letter-spacing: 0.04em;
  padding: 6px 0;
  position: relative;
  transition: color 0.2s;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width 0.28s var(--ease);
}
.main-nav a:hover { color: #FFFFFF; }
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }
.main-nav a.active { color: var(--gold-light); }
.header-cta { display: inline-flex; align-items: center; gap: 22px; }
.header-tel {
  font-size: 14px;
  color: rgba(242, 244, 247, 0.78);
  letter-spacing: 0.05em;
  font-weight: 500;
}
.header-tel strong { color: #F6F7F9; font-weight: 600; }
.header-cta .btn { padding: 10px 22px; font-size: 14px; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 3px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span { display: block; width: 18px; height: 1.6px; background: #F2F4F7; transition: all 0.28s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(6.6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.6px) rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: var(--navy-900);
  color: #F2F4F7;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
}
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.5; }
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(10, 22, 38, 0.96) 0%, rgba(10, 22, 38, 0.82) 46%, rgba(10, 22, 38, 0.42) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: 150px 24px 120px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  letter-spacing: 0.34em;
  color: var(--gold-light);
  font-weight: 500;
}
.hero-kicker::before { content: ""; width: 34px; height: 1px; background: var(--gold); }
.hero h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(38px, 6vw, 66px);
  line-height: 1.22;
  letter-spacing: 0.02em;
  margin: 26px 0 24px;
  max-width: 820px;
  text-wrap: balance;
}
.hero h1 .accent { color: var(--gold-light); }
.hero-sub {
  max-width: 560px;
  color: rgba(232, 237, 241, 0.82);
  font-size: 17px;
  line-height: 1.95;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin-top: 52px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(232, 237, 241, 0.66);
  font-size: 14px;
  letter-spacing: 0.06em;
}
.hero-meta b { color: #F6F7F9; font-weight: 600; }

/* 页面 Hero（内页顶部） */
.page-hero {
  position: relative;
  background: var(--navy-900);
  color: #F2F4F7;
  padding: 172px 0 84px;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -160px;
  top: -160px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 75, 0.16) 0%, rgba(201, 162, 75, 0) 68%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .crumb {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: rgba(232, 237, 241, 0.55);
  margin-bottom: 20px;
}
.page-hero .crumb a { color: var(--gold-light); }
.page-hero h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.28;
  letter-spacing: 0.02em;
}
.page-hero .lead {
  margin-top: 18px;
  max-width: 640px;
  color: rgba(232, 237, 241, 0.78);
  font-size: 16px;
  line-height: 1.95;
}

/* ---------- 首页统计条 ---------- */
.stats-strip {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat { padding: 26px 20px 26px 0; }
.stat + .stat { border-left: 1px solid rgba(255, 255, 255, 0.14); padding-left: 34px; }
.stat .num {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(30px, 3.4vw, 44px);
  color: var(--gold-light);
  line-height: 1.15;
}
.stat .num em { font-style: normal; font-size: 0.55em; color: rgba(232, 237, 241, 0.6); margin-left: 2px; }
.stat .label { margin-top: 8px; font-size: 13.5px; letter-spacing: 0.12em; color: rgba(232, 237, 241, 0.62); }

/* ---------- 服务卡片 ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 34px 30px;
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.service-card:hover {
  transform: translateY(-5px);
  border-color: rgba(201, 162, 75, 0.55);
  box-shadow: var(--shadow-card);
}
.service-icon {
  width: 52px;
  height: 52px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  background: #FBF9F4;
  margin-bottom: 24px;
}
.service-card h3 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 20px;
  color: var(--navy-800);
  margin-bottom: 12px;
}
.service-card p { font-size: 14.5px; color: var(--ink-soft); flex: 1; }
.service-link {
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gold);
}
.service-link svg { transition: transform 0.25s var(--ease); }
.service-card:hover .service-link svg { transform: translateX(5px); }

/* ---------- 图文分栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}
.split-media { position: relative; }
.split-media img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; }
.split-media::after {
  content: "";
  position: absolute;
  inset: 18px -18px -18px 18px;
  border: 1px solid rgba(201, 162, 75, 0.55);
  z-index: -1;
}
.split-badge {
  position: absolute;
  left: -14px;
  bottom: 26px;
  background: var(--navy-800);
  color: var(--gold-light);
  font-family: var(--serif);
  font-weight: 700;
  font-size: 15px;
  padding: 12px 20px;
  letter-spacing: 0.06em;
  box-shadow: var(--shadow-card);
}
.split-body .kicker { display: inline-flex; align-items: center; gap: 10px; font-size: 13px; letter-spacing: 0.32em; color: var(--gold); font-weight: 500; }
.split-body .kicker::before { content: ""; width: 26px; height: 1px; background: var(--gold); }
.split-body h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(26px, 3.2vw, 36px);
  line-height: 1.36;
  color: var(--navy-800);
  margin: 16px 0 18px;
}
.split-body > p { color: var(--ink-soft); font-size: 15.5px; }
.split-points { margin: 26px 0 32px; display: grid; gap: 14px; }
.split-points li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--ink); }
.split-points li svg { flex: none; margin-top: 5px; color: var(--gold); }

/* ---------- 方法论（深色带） ---------- */
.method-band { background: var(--navy-800); color: #E8ECF1; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 8px; }
.step { border-top: 1px solid rgba(255, 255, 255, 0.16); padding-top: 22px; }
.step .no { font-family: var(--serif); font-weight: 700; font-size: 30px; color: var(--gold); line-height: 1; }
.step h3 { font-family: var(--serif); font-weight: 600; font-size: 18px; margin: 14px 0 10px; color: #F6F7F9; }
.step p { font-size: 14px; color: rgba(232, 237, 241, 0.66); line-height: 1.85; }
.step .dur { display: inline-block; margin-top: 14px; font-size: 12.5px; letter-spacing: 0.12em; color: var(--gold-light); border: 1px solid rgba(201, 162, 75, 0.45); padding: 3px 10px; border-radius: 2px; }

/* ---------- 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  background: var(--card);
  border: 1px solid var(--line);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); border-color: rgba(201, 162, 75, 0.5); }
.case-media { position: relative; aspect-ratio: 3 / 2; overflow: hidden; }
.case-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.case-card:hover .case-media img { transform: scale(1.05); }
.case-tag {
  position: absolute;
  left: 14px;
  top: 14px;
  background: rgba(10, 22, 38, 0.78);
  color: var(--gold-light);
  font-size: 12px;
  letter-spacing: 0.16em;
  padding: 5px 12px;
  border-radius: 2px;
}
.case-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.case-body h3 { font-family: var(--serif); font-weight: 700; font-size: 20px; color: var(--navy-800); }
.case-body .client { margin-top: 5px; font-size: 13.5px; color: var(--gold); letter-spacing: 0.06em; font-weight: 500; }
.case-body p { margin-top: 12px; font-size: 14px; color: var(--ink-soft); flex: 1; }
.case-body .case-meta { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--muted); }
.case-body .case-meta .more { display: inline-flex; align-items: center; gap: 6px; color: var(--gold); font-weight: 500; }
.case-body .case-meta .more svg { transition: transform 0.25s var(--ease); }
.case-card:hover .case-meta .more svg { transform: translateX(4px); }

/* 案例筛选 */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.filter-btn {
  padding: 8px 20px;
  font-size: 14px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 2px;
  transition: all 0.22s var(--ease);
}
.filter-btn:hover { border-color: var(--gold); color: var(--gold); }
.filter-btn.active { background: var(--navy-800); border-color: var(--navy-800); color: var(--gold-light); }

/* ---------- 团队卡片 ---------- */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.team-card { background: var(--card); border: 1px solid var(--line); overflow: hidden; transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease); }
.team-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-card); }
.team-photo { aspect-ratio: 1 / 1; overflow: hidden; }
.team-photo img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.94); transition: transform 0.5s var(--ease); }
.team-card:hover .team-photo img { transform: scale(1.04); }
.team-info { padding: 20px 22px 24px; }
.team-info h3 { font-family: var(--serif); font-weight: 700; font-size: 19px; color: var(--navy-800); }
.team-info .role { margin-top: 4px; font-size: 13px; color: var(--gold); letter-spacing: 0.12em; font-weight: 500; }
.team-info p { margin-top: 10px; font-size: 13.5px; color: var(--ink-soft); line-height: 1.8; }

/* ---------- 资讯卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: var(--card);
  border: 1px solid var(--line);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); border-color: rgba(201, 162, 75, 0.5); }
.news-media { aspect-ratio: 16 / 9; overflow: hidden; }
.news-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.news-card:hover .news-media img { transform: scale(1.05); }
.news-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.news-body .date { font-size: 12.5px; letter-spacing: 0.16em; color: var(--muted); }
.news-body h3 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.5;
  color: var(--navy-800);
  margin: 10px 0 12px;
  flex: 1;
}
.news-body p { font-size: 13.5px; color: var(--ink-soft); }
.news-body .more { margin-top: 16px; display: inline-flex; align-items: center; gap: 6px; font-size: 13.5px; color: var(--gold); font-weight: 500; }
.news-body .more svg { transition: transform 0.25s var(--ease); }
.news-card:hover .more svg { transform: translateX(4px); }

/* ---------- 联系卡片 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.contact-card { background: var(--card); border: 1px solid var(--line); padding: 30px 26px; transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease); }
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.contact-card .ic { color: var(--gold); margin-bottom: 18px; }
.contact-card h3 { font-family: var(--serif); font-weight: 600; font-size: 17px; color: var(--navy-800); margin-bottom: 8px; }
.contact-card p { font-size: 14px; color: var(--ink-soft); line-height: 1.8; }
.contact-card p a:hover { color: var(--gold); }

/* ---------- 时间轴（关于页） ---------- */
.timeline { display: grid; grid-template-columns: 148px 44px 1fr; margin-top: 20px; }
.tl-item { display: contents; }
.tl-time {
  padding: 4px 0 44px;
  text-align: right;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 22px;
  color: var(--navy-800);
  letter-spacing: 0.02em;
}
.tl-axis { position: relative; }
.tl-axis::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 8px;
  bottom: 0;
  width: 1px;
  background: rgba(14, 31, 51, 0.14);
  transform: translateX(-50%);
}
.tl-dot {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--gold);
  z-index: 1;
}
.tl-content { padding: 0 0 44px 4px; }
.tl-content h3 { font-family: var(--serif); font-weight: 600; font-size: 18px; color: var(--navy-800); line-height: 1.4; }
.tl-content p { margin-top: 8px; font-size: 14px; color: var(--ink-soft); max-width: 560px; line-height: 1.85; }

/* ---------- 价值观卡片 ---------- */
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.value-card { border-top: 2px solid var(--navy-800); padding-top: 20px; }
.value-card .no { font-family: var(--serif); font-weight: 700; font-size: 26px; color: var(--gold); }
.value-card h3 { font-family: var(--serif); font-weight: 700; font-size: 19px; color: var(--navy-800); margin: 12px 0 10px; }
.value-card p { font-size: 14px; color: var(--ink-soft); line-height: 1.85; }

/* ---------- 服务详情块 ---------- */
.svc-block {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: clamp(28px, 5vw, 60px);
  padding: clamp(36px, 5vw, 56px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 110px;
}
.svc-block:last-child { border-bottom: 1px solid var(--line); }
.svc-left .svc-icon {
  width: 56px; height: 56px;
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  color: var(--gold); background: #FBF9F4; margin-bottom: 18px;
}
.svc-left h2 { font-family: var(--serif); font-weight: 700; font-size: 24px; color: var(--navy-800); line-height: 1.4; }
.svc-left .en { margin-top: 8px; font-size: 12px; letter-spacing: 0.3em; color: var(--muted); }
.svc-right > p { color: var(--ink-soft); font-size: 15px; margin-bottom: 22px; max-width: 720px; }
.svc-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.svc-col h4 {
  font-size: 13.5px;
  letter-spacing: 0.18em;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.svc-col h4::before { content: ""; width: 18px; height: 1px; background: var(--gold); }
.svc-col ul { display: grid; gap: 10px; }
.svc-col li { font-size: 14.5px; color: var(--ink-soft); padding-left: 18px; position: relative; }
.svc-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border: 1.5px solid var(--gold);
  transform: rotate(45deg);
}

/* ---------- 资质 / 数字横条 ---------- */
.qual-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.qual-item { padding: 26px 24px; border: 1px solid rgba(255, 255, 255, 0.16); background: rgba(255, 255, 255, 0.03); }
.qual-item .q { font-family: var(--serif); font-weight: 700; font-size: clamp(24px, 2.6vw, 32px); color: var(--gold-light); line-height: 1.2; }
.qual-item .q em { font-style: normal; font-size: 0.55em; color: rgba(232, 237, 241, 0.6); }
.qual-item p { margin-top: 8px; font-size: 13.5px; color: rgba(232, 237, 241, 0.66); letter-spacing: 0.08em; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--card); border: 1px solid var(--line); }
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 20px 26px;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 17px;
  color: var(--navy-800);
}
.faq-q svg { flex: none; color: var(--gold); transition: transform 0.28s var(--ease); }
.faq-item.open .faq-q svg { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 26px 22px; font-size: 14.5px; color: var(--ink-soft); line-height: 1.9; }
.faq-item.open .faq-a { display: block; }

/* ---------- CTA 横带 ---------- */
.cta-band {
  background: var(--navy-900);
  color: #F2F4F7;
  padding: clamp(72px, 8vw, 104px) 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(201, 162, 75, 0.12) 0%, rgba(201, 162, 75, 0) 66%);
  pointer-events: none;
}
.cta-inner { position: relative; text-align: center; max-width: 760px; margin: 0 auto; }
.cta-inner h2 { font-family: var(--serif); font-weight: 700; font-size: clamp(28px, 4vw, 44px); line-height: 1.34; }
.cta-inner p { margin: 18px auto 34px; color: rgba(232, 237, 241, 0.72); font-size: 16px; max-width: 560px; }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; }
.cta-tel { margin-top: 26px; font-size: 14px; letter-spacing: 0.1em; color: rgba(232, 237, 241, 0.6); }
.cta-tel a { color: var(--gold-light); font-weight: 600; font-size: 17px; letter-spacing: 0.04em; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy-900); color: #AEB8C4; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 1fr 1.1fr;
  gap: 44px;
  padding: 64px 0 48px;
}
.footer-brand .brand-name .cn { font-size: 22px; }
.footer-brand p { margin-top: 18px; font-size: 14px; line-height: 1.9; color: #8E99A6; max-width: 320px; }
.footer-col h4 { color: #F2F4F7; font-size: 14px; letter-spacing: 0.22em; font-weight: 600; margin-bottom: 22px; }
.footer-col ul { display: grid; gap: 12px; }
.footer-col a { font-size: 14px; color: #8E99A6; transition: color 0.2s; }
.footer-col a:hover { color: var(--gold-light); }
.footer-col li { font-size: 14px; color: #8E99A6; line-height: 1.8; }
.footer-col li b { color: #D6DCE3; font-weight: 600; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  font-size: 13px;
  color: #68747F;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 6vh 20px 40px;
  background: rgba(10, 22, 38, 0.68);
  overflow-y: auto;
}
.modal.open { display: flex; }
.modal-panel {
  background: var(--paper);
  width: 100%;
  max-width: 880px;
  position: relative;
  animation: modalIn 0.35s var(--ease);
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: none; }
}
.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 3;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: rgba(10, 22, 38, 0.72);
  color: #F2F4F7;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.modal-close:hover { background: var(--navy-800); }
.modal-media { aspect-ratio: 16 / 7; overflow: hidden; }
.modal-media img { width: 100%; height: 100%; object-fit: cover; }
.modal-body { padding: clamp(28px, 4vw, 44px); }
.modal-body .m-tag { display: inline-block; font-size: 12px; letter-spacing: 0.18em; color: var(--gold); border: 1px solid rgba(201, 162, 75, 0.5); padding: 4px 12px; border-radius: 2px; }
.modal-body h2 { font-family: var(--serif); font-weight: 700; font-size: clamp(24px, 3vw, 32px); color: var(--navy-800); margin: 16px 0 6px; line-height: 1.35; }
.modal-body .m-sub { font-size: 14px; color: var(--gold); letter-spacing: 0.06em; font-weight: 500; }
.modal-body .m-lead { margin-top: 20px; color: var(--ink-soft); font-size: 15px; }
.modal-body h3 {
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--gold);
  font-weight: 600;
  margin: 30px 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.modal-body h3::before { content: ""; width: 18px; height: 1px; background: var(--gold); }
.modal-body p { font-size: 14.5px; color: var(--ink-soft); line-height: 2; margin-bottom: 14px; }
.modal-body .m-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 8px; }
.metric { background: var(--card); border: 1px solid var(--line); padding: 18px 16px; text-align: center; }
.metric .v { font-family: var(--serif); font-weight: 700; font-size: 24px; color: var(--navy-800); }
.metric .k { margin-top: 6px; font-size: 12.5px; color: var(--muted); letter-spacing: 0.06em; }

/* ---------- 滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.d1 { transition-delay: 0.08s; }
.d2 { transition-delay: 0.16s; }
.d3 { transition-delay: 0.24s; }
.d4 { transition-delay: 0.32s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .service-grid, .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid, .value-grid, .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .qual-strip { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--navy-900);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 24px 26px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease);
  }
  .main-nav.open { transform: none; opacity: 1; visibility: visible; }
  .main-nav a { display: block; width: 100%; padding: 14px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.07); font-size: 16px; }
  .main-nav a::after { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-tel { display: none; }
  .split { grid-template-columns: 1fr; }
  .split-media::after { inset: 14px -10px -10px 14px; }
  .svc-block { grid-template-columns: 1fr; gap: 26px; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .stat { border-bottom: 1px solid rgba(255, 255, 255, 0.14); }
  .stat:nth-child(odd) { border-left: none; }
  .stat:nth-child(3), .stat:nth-child(4) { border-bottom: none; }
  .timeline { grid-template-columns: 96px 36px 1fr; }
}
@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .service-grid, .case-grid, .news-grid, .team-grid, .value-grid, .contact-grid, .steps-grid, .footer-main, .qual-strip, .svc-cols, .modal-body .m-metrics { grid-template-columns: 1fr; }
  .hero-inner { padding: 140px 18px 80px; }
  .hero-actions .btn { width: 100%; }
  .footer-bottom { flex-direction: column; }
  .modal { padding: 4vh 12px 24px; }
  .modal-media { aspect-ratio: 3 / 2; }
  .timeline { grid-template-columns: 74px 28px 1fr; }
  .tl-time { font-size: 18px; }
  .header-inner { height: 68px; }
  .main-nav { top: 68px; }
  .section-head .kicker { letter-spacing: 0.22em; }
}

/* 浅色背景下的步骤条 */
.steps-light .step { border-top-color: var(--line); }
.steps-light .step h3 { color: var(--navy-800); }
.steps-light .step p { color: var(--ink-soft); }

/* ---------- 资质区双栏 ---------- */
.qual-split { display: grid; grid-template-columns: 1fr 1.35fr; gap: clamp(30px, 5vw, 64px); align-items: center; }
.qual-media img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
@media (max-width: 900px) {
  .qual-split { grid-template-columns: 1fr; }
  .qual-media img { max-height: 320px; }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}