/* ============================================================
   欧亚国际官网 - 样式表
   视觉体系：深藏青 + 金，欧亚之桥签名元素
   ============================================================ */

:root {
  --navy: #0B1F3A;
  --navy-2: #10294B;
  --navy-3: #163252;
  --gold: #C9A227;
  --gold-2: #E0C36A;
  --bg: #F4F6F9;
  --bg-2: #EDF1F6;
  --ink: #16233B;
  --muted: #5C6B82;
  --line: rgba(22, 35, 59, 0.12);
  --navy-line: rgba(255, 255, 255, 0.14);
  --white: #FFFFFF;
  --font-display: "Noto Serif SC", "Songti SC", SimSun, serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  --shadow: 0 14px 34px rgba(11, 31, 58, 0.10);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

::selection { background: var(--gold); color: var(--navy); }

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

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

/* ===================== 顶部导航 ===================== */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background: rgba(11, 31, 58, 0.97);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.22);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
}
.brand { display: flex; flex-direction: column; line-height: 1.15; text-decoration: none; }
.brand-mark {
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 900;
  letter-spacing: 3px;
  color: var(--white);
}
.brand-sub { font-size: 10px; letter-spacing: 4px; color: var(--gold-2); margin-top: 3px; }

.main-nav { display: flex; gap: 4px; }
.nav-link {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 15px;
  text-decoration: none;
  transition: color 0.25s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-link:hover { color: var(--gold-2); }
.nav-link.is-active { color: var(--gold-2); }
.nav-link.is-active::after { transform: scaleX(1); }

.header-tel {
  flex-shrink: 0;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 8px 16px;
  font-size: 14px;
  text-decoration: none;
  letter-spacing: 0.5px;
  transition: border-color 0.25s ease, color 0.25s ease;
}
.header-tel:hover { border-color: var(--gold); color: var(--gold-2); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px; height: 46px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  cursor: pointer;
  align-items: center;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--white);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================== 视图切换 ===================== */

.view { display: none; }
.view.is-active { display: block; animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ===================== 按钮 ===================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 12px 30px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 1px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}
.btn-gold { background: var(--gold); color: var(--navy); }
.btn-gold:hover { background: #b18e1e; color: var(--white); }
.btn-ghost { border-color: rgba(255, 255, 255, 0.55); color: var(--white); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: var(--gold-2); }
.btn-outline { border-color: var(--gold); color: var(--navy); }
.btn-outline:hover { background: var(--gold); color: var(--navy); }
.btn-block { width: 100%; }

/* ===================== 首页 Hero ===================== */

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,31,58,0.74) 0%, rgba(11,31,58,0.52) 45%, rgba(10,26,48,0.92) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 140px 24px 170px;
}
.hero-eyebrow {
  color: var(--gold-2);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 5px;
  margin-bottom: 22px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 74px);
  font-weight: 900;
  line-height: 1.18;
  color: var(--white);
  letter-spacing: 2px;
}
.hero-sub {
  margin-top: 26px;
  max-width: 660px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 17px;
  line-height: 1.95;
}
.hero-actions { margin-top: 40px; display: flex; gap: 16px; flex-wrap: wrap; }

.hero-bridge {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  width: 100%;
  height: 90px;
  z-index: 1;
  opacity: 0.9;
}

/* ===================== 数据条 ===================== */

.stats-band { background: #0E2547; border-top: 1px solid rgba(255, 255, 255, 0.06); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 46px 24px;
}
.stat-item { text-align: center; }
.stat-num {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 900;
  color: var(--gold);
  line-height: 1.1;
}
.stat-label { margin-top: 8px; color: rgba(255, 255, 255, 0.72); font-size: 14px; letter-spacing: 1px; }

/* ===================== 通用章节 ===================== */

.section { padding: 96px 0; }
.section-alt { background: var(--bg-2); }

.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.35;
}
.section-lead { margin-top: 14px; color: var(--muted); font-size: 16px; line-height: 1.8; }

.eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 4px;
  margin-bottom: 14px;
}
.eyebrow-bridge { width: 64px; height: 14px; flex-shrink: 0; }

.text-link {
  display: inline-block;
  margin-top: 18px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}
.text-link:hover { border-bottom-color: var(--gold); }

/* ===================== 业务卡片（首页） ===================== */

.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.biz-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(201, 162, 39, 0.5); }
.biz-img-wrap { overflow: hidden; aspect-ratio: 4 / 3; }
.biz-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.biz-card:hover .biz-img-wrap img { transform: scale(1.06); }
.biz-body { padding: 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.biz-body h3 { font-family: var(--font-display); font-size: 20px; font-weight: 700; color: var(--navy); }
.biz-body p { font-size: 14px; color: var(--muted); line-height: 1.8; }
.biz-more { margin-top: auto; color: var(--gold); font-size: 14px; font-weight: 700; }

/* ===================== 图文分栏 ===================== */

.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.split-media img { width: 100%; border-radius: 4px; box-shadow: var(--shadow); }
.split-body .eyebrow { justify-content: flex-start; }
.split-body h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.35;
  margin-bottom: 18px;
}
.split-body p { color: var(--muted); line-height: 1.95; margin-bottom: 14px; }
.split-body .btn { margin-top: 12px; }

/* ===================== 新闻（首页） ===================== */

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: var(--white);
  border: 1px solid var(--line);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.news-card a { text-decoration: none; color: inherit; display: block; }
.news-card-img { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.news-card:hover .news-card-img img { transform: scale(1.05); }
.news-date {
  position: absolute;
  left: 12px; bottom: 12px;
  background: rgba(11, 31, 58, 0.88);
  color: var(--white);
  font-size: 12px;
  padding: 4px 10px;
  letter-spacing: 1px;
}
.news-card-body { padding: 20px 22px 24px; }
.news-cat { color: var(--gold); font-size: 12px; font-weight: 700; letter-spacing: 2px; }
.news-card-body h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.55;
  margin: 8px 0 10px;
}
.news-summary { font-size: 13px; color: var(--muted); line-height: 1.75; }

/* ===================== CTA 横幅 ===================== */

.cta-band { background: linear-gradient(120deg, #0B1F3A 0%, #14315C 100%); }
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
  padding: 60px 24px;
}
.cta-inner h2 { font-family: var(--font-display); font-size: clamp(24px, 2.8vw, 34px); color: var(--white); font-weight: 700; }
.cta-inner p { margin-top: 10px; color: rgba(255, 255, 255, 0.75); font-size: 15px; }

/* ===================== 内页 Hero ===================== */

.page-hero {
  position: relative;
  background: linear-gradient(135deg, #0B1F3A 0%, #14315C 100%);
  padding: 158px 0 76px;
  text-align: center;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  left: -10%; right: -10%; bottom: 0;
  height: 60px;
  background: radial-gradient(ellipse 45% 90% at 50% 100%, rgba(201,162,39,0.28) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero-eyebrow { color: var(--gold-2); font-size: 13px; letter-spacing: 6px; margin-bottom: 14px; }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 900;
  color: var(--white);
  letter-spacing: 3px;
}
.page-hero p { margin-top: 14px; color: rgba(255, 255, 255, 0.8); font-size: 16px; }

/* ===================== 发展历程 ===================== */

.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline::before {
  content: "";
  position: absolute;
  left: 10px; top: 10px; bottom: 10px;
  width: 2px;
  background: rgba(201, 162, 39, 0.35);
}
.timeline-item { position: relative; padding: 0 0 34px 48px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: 0; top: 4px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--navy);
  border: 3px solid var(--gold);
}
.timeline-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  padding: 20px 26px;
  border-radius: 2px;
}
.timeline-card h3 { font-family: var(--font-display); font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.timeline-card p { font-size: 14px; color: var(--muted); line-height: 1.85; }

/* ===================== 使命愿景 ===================== */

.mv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.mv-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  padding: 34px 30px;
  text-align: center;
}
.mv-card h3 { font-family: var(--font-display); font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 14px; }
.mv-card p { font-size: 14px; color: var(--muted); line-height: 1.9; }

/* ===================== 主营业务详情 ===================== */

.biz-block { padding: 88px 0; }
.biz-block:nth-child(even) { background: var(--bg-2); }
.biz-block-inner { display: flex; gap: 56px; align-items: center; }
.biz-block:nth-child(even) .biz-block-inner { flex-direction: row-reverse; }
.biz-block-media { flex: 0 0 46%; }
.biz-block-media img { width: 100%; border-radius: 4px; box-shadow: 0 18px 44px rgba(11, 31, 58, 0.18); }
.biz-block-body { flex: 1; }
.biz-block-body .eyebrow { justify-content: flex-start; }
.biz-block-body h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
}
.biz-block-body > p { color: var(--muted); line-height: 1.95; margin-bottom: 22px; }
.biz-points { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
.biz-points li { position: relative; padding-left: 22px; font-size: 14px; color: var(--ink); }
.biz-points li::before {
  content: "";
  position: absolute;
  left: 0; top: 7px;
  width: 9px; height: 9px;
  background: var(--gold);
}

/* ===================== 新闻列表页 ===================== */

.news-list { max-width: 920px; margin: 0 auto; display: flex; flex-direction: column; gap: 24px; }
.news-item {
  background: var(--white);
  border: 1px solid var(--line);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.news-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.news-item-link {
  display: grid;
  grid-template-columns: 280px 1fr;
  text-decoration: none;
  color: inherit;
}
.news-item-img { overflow: hidden; }
.news-item-img img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16 / 10; transition: transform 0.6s ease; }
.news-item:hover .news-item-img img { transform: scale(1.05); }
.news-item-body { padding: 26px 28px 26px 0; display: flex; flex-direction: column; gap: 10px; justify-content: center; }
.news-meta { display: flex; gap: 14px; align-items: center; }
.news-meta .news-date { position: static; background: transparent; color: var(--muted); padding: 0; }
.news-item-body h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.55;
}
.news-item-body > p { font-size: 14px; color: var(--muted); line-height: 1.8; }
.news-more { color: var(--gold); font-size: 14px; font-weight: 700; }

/* ===================== 新闻详情 ===================== */

.article-wrap { max-width: 840px; margin: 0 auto; }
.article {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 52px 56px;
}
.article-cat { color: var(--gold); font-size: 13px; font-weight: 700; letter-spacing: 3px; }
.article-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 900;
  color: var(--navy);
  line-height: 1.45;
  margin: 14px 0 14px;
}
.article-meta {
  font-size: 13px;
  color: var(--muted);
  padding-bottom: 22px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--line);
}
.article-img { width: 100%; border-radius: 4px; margin-bottom: 28px; }
.article p { font-size: 15.5px; color: #33415C; line-height: 2.05; margin-bottom: 20px; }
.article-actions { margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--line); }

/* ===================== 企业文化 ===================== */

.csr-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.csr-card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 28px 26px;
  border-bottom: 3px solid var(--gold);
}
.csr-card h3 { font-family: var(--font-display); font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.csr-card p { font-size: 13.5px; color: var(--muted); line-height: 1.85; }

/* ===================== 人才招聘 ===================== */

.job-list { max-width: 860px; margin: 0 auto; }
.job-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  padding: 22px 28px;
  margin-bottom: 16px;
  transition: box-shadow 0.3s ease;
}
.job-item:hover { box-shadow: var(--shadow); }
.job-head { display: flex; justify-content: space-between; gap: 16px; align-items: center; flex-wrap: wrap; }
.job-head h3 { font-family: var(--font-display); font-size: 18px; font-weight: 700; color: var(--navy); }
.job-tag {
  font-size: 12px;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 3px 12px;
  border-radius: 20px;
  letter-spacing: 1px;
}
.job-item > p { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.8; }

.hire-flow { text-align: center; margin-top: 60px; }
.hire-flow h3 { font-family: var(--font-display); font-size: 22px; font-weight: 700; color: var(--navy); }
.flow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 30px auto 0; max-width: 760px; }
.flow-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
}
.flow-step p { margin-top: 12px; color: var(--navy); font-size: 14px; font-weight: 500; }
.hire-contact { margin-top: 22px; color: var(--muted); font-size: 14px; }

/* ===================== 联系我们 ===================== */

.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.contact-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  padding: 24px;
}
.contact-card h3 { font-size: 13px; color: var(--muted); letter-spacing: 2px; font-weight: 700; }
.contact-value {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  color: var(--navy);
  margin: 10px 0 6px;
  word-break: break-all;
}
.contact-card > p:last-child { font-size: 13px; color: var(--muted); line-height: 1.7; }

.contact-form-wrap {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 34px 34px 30px;
}
.contact-form-wrap h3 { font-family: var(--font-display); font-size: 22px; font-weight: 700; color: var(--navy); }
.form-tip { margin: 10px 0 24px; font-size: 14px; color: var(--muted); }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-size: 13px; font-weight: 500; color: var(--navy); margin-bottom: 8px; }
.form-row input,
.form-row textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--bg);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink);
  border-radius: 2px;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}
.form-row input { min-height: 46px; }
.form-row textarea { resize: vertical; min-height: 120px; }
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--gold);
  background: var(--white);
}
.form-success { display: none; margin-top: 14px; font-size: 14px; color: #1E7D4F; }
.form-success.show { display: block; }

/* ===================== 页脚 ===================== */

.site-footer { background: #0A1A30; color: rgba(255, 255, 255, 0.72); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding: 64px 24px 48px;
}
.footer-logo { font-family: var(--font-display); font-size: 26px; font-weight: 900; color: var(--white); letter-spacing: 4px; }
.footer-logo-en { font-size: 11px; letter-spacing: 5px; color: var(--gold-2); margin: 8px 0 18px; }
.footer-brand > p:nth-child(3) { font-size: 13px; line-height: 1.95; }
.footer-bridge { width: 180px; height: 30px; margin-top: 20px; }
.footer-col h4 { color: var(--white); font-size: 15px; font-weight: 700; margin-bottom: 18px; letter-spacing: 1px; }
.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13.5px;
  padding: 5px 0;
  text-decoration: none;
  transition: color 0.25s ease;
}
.footer-col a:hover { color: var(--gold-2); }
.footer-col p { font-size: 13.5px; padding: 4px 0; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 20px 0; }
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}
.footer-kw { letter-spacing: 1px; }

/* ===================== 返回顶部 ===================== */

.back-top {
  position: fixed;
  right: 24px; bottom: 24px;
  z-index: 90;
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold);
  border: 1px solid rgba(201, 162, 39, 0.6);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, background-color 0.25s ease;
}
.back-top.show { display: inline-flex; }
.back-top:hover { background: var(--navy-2); transform: translateY(-3px); }

/* ===================== 响应式 ===================== */

@media (max-width: 1080px) {
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .csr-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .biz-block-inner,
  .biz-block:nth-child(even) .biz-block-inner { flex-direction: column; }
  .biz-block-media { flex: none; width: 100%; }
}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: min(300px, 82vw);
    background: var(--navy-2);
    flex-direction: column;
    padding: 100px 28px 40px;
    gap: 6px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: -12px 0 40px rgba(0, 0, 0, 0.3);
  }
  .main-nav.open { transform: translateX(0); }
  .nav-link { font-size: 17px; padding: 13px 8px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
  .nav-link::after { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-tel { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .news-item-link { grid-template-columns: 1fr; }
  .news-item-body { padding: 20px 22px 24px; }
  .mv-grid { grid-template-columns: 1fr; }
  .article { padding: 30px 24px; }
}

@media (max-width: 560px) {
  .section { padding: 72px 0; }
  .biz-grid, .news-grid, .csr-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .flow-steps { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .biz-points { grid-template-columns: 1fr; }
}

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