/* ============================================
   安心开锁 - 开锁换锁企业官网
   企业展示站风格 · 深蓝+金色专业感
   ============================================ */

:root {
  --primary: #1a4b8c;
  --primary-dark: #123a6b;
  --primary-deep: #0c2b50;
  --primary-light: #e8f0fa;
  --accent: #f5a623;
  --accent-dark: #d98f10;
  --text: #333333;
  --text-light: #666666;
  --text-lighter: #999999;
  --bg: #ffffff;
  --bg-light: #f5f7fa;
  --border: #e6e9ee;
  --shadow: 0 2px 12px rgba(26,75,140,0.08);
  --shadow-lg: 0 10px 35px rgba(26,75,140,0.15);
  --radius: 8px;
  --radius-lg: 14px;
  --transition: all 0.3s ease;
  --max-width: 1240px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 顶部电话条 ===== */
.top-strip {
  background: var(--primary-deep);
  color: #fff;
  font-size: 13px;
  padding: 9px 0;
}

.top-strip .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
}

.top-strip .t-left {
  display: flex;
  gap: 24px;
  align-items: center;
  color: rgba(255,255,255,0.85);
}

.top-strip .t-phone {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ===== 导航 ===== */
.header {
  background: var(--bg);
  box-shadow: 0 2px 10px rgba(31,78,121,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 74px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-mark {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  box-shadow: 0 4px 10px rgba(31,78,121,0.3);
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: 1px;
  line-height: 1.2;
}

.logo-text small {
  display: block;
  font-size: 10px;
  font-weight: 400;
  color: var(--text-lighter);
  letter-spacing: 3px;
}

.nav {
  display: flex;
  gap: 6px;
  align-items: center;
}

.nav a {
  padding: 9px 15px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 6px;
  transition: var(--transition);
}

.nav a:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.nav a.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 700;
}

.nav .nav-cta {
  background: var(--accent);
  color: #fff !important;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: 6px;
}

.nav .nav-cta:hover {
  background: var(--accent-dark);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
}

.menu-toggle span {
  width: 26px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}

/* ===== Banner Hero (纯CSS，无图片) ===== */
.banner {
  background: linear-gradient(135deg, #0c2b50 0%, #1a4b8c 50%, #123a6b 100%);
  position: relative;
  overflow: hidden;
  padding: 100px 0 60px;
}

.banner-decor {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.banner-decor .ring-1 {
  position: absolute;
  width: 380px;
  height: 380px;
  top: 30%;
  right: -120px;
  background: radial-gradient(circle, rgba(245,166,35,0.12) 0%, transparent 70%);
}

.banner-decor .ring-2 {
  position: absolute;
  width: 240px;
  height: 240px;
  bottom: -80px;
  right: 22%;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
}

.banner-decor .big-key {
  position: absolute;
  top: 50%;
  right: 8%;
  transform: translateY(-50%) rotate(-25deg);
  font-size: 240px;
  opacity: 0.08;
  color: var(--accent);
  font-weight: 900;
}

.banner-decor .small-icon {
  position: absolute;
  font-size: 50px;
  opacity: 0.18;
}

.banner-decor .small-icon.s1 { top: 12%; right: 32%; transform: rotate(15deg); color: #fff; }
.banner-decor .small-icon.s2 { bottom: 18%; left: 6%; color: var(--accent); transform: rotate(-10deg); }
.banner-decor .small-icon.s3 { top: 25%; left: 28%; color: #fff; transform: rotate(20deg); font-size: 38px; }

.banner .container {
  position: relative;
  z-index: 2;
}

.banner-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.banner h1 {
  font-size: 46px;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.banner h1 .hl {
  color: var(--accent);
}

.banner p {
  font-size: 17px;
  color: rgba(255,255,255,0.9);
  line-height: 1.9;
  margin-bottom: 30px;
}

.banner-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.banner-tags span {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.35);
  backdrop-filter: blur(6px);
  color: #fff;
  padding: 7px 16px;
  border-radius: 30px;
  font-size: 13px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 700;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(244,123,32,0.4);
}

.btn-accent:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(31,78,121,0.3);
}

.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}

.btn-ghost:hover {
  background: #fff;
  color: var(--primary);
}

/* ===== 数据条 ===== */
.stats-strip {
  background: var(--primary);
  padding: 30px 0;
  position: relative;
  z-index: 3;
  margin-top: -1px;
}

.stats-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-item {
  text-align: center;
  color: #fff;
  border-right: 1px solid rgba(255,255,255,0.2);
}

.stat-item:last-child {
  border-right: none;
}

.stat-num {
  font-size: 36px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.8);
  margin-top: 8px;
  letter-spacing: 1px;
}

/* ===== Section ===== */
.section {
  padding: 75px 0;
}

.section-alt {
  background: var(--bg-light);
}

.sec-head {
  text-align: center;
  margin-bottom: 45px;
}

.sec-head .kicker {
  display: inline-block;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 10px;
}

.sec-head h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: 1px;
}

.sec-head h2::after {
  content: '';
  display: block;
  width: 55px;
  height: 3px;
  background: var(--accent);
  margin: 14px auto 0;
  border-radius: 2px;
}

.sec-head .sub {
  color: var(--text-light);
  font-size: 15px;
  margin-top: 12px;
}

/* ===== 车型展示 - 大���网格 ===== */
.fleet-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.fleet-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: block;
}

.fleet-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(244,123,32,0.4);
}

.fleet-card-img {
  height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}

.fleet-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,42,69,0.6), transparent 45%);
  opacity: 0;
  transition: var(--transition);
}

.fleet-card:hover .fleet-card-img::after {
  opacity: 1;
}

/* 卡片纯色图标版本（无文字图，避免被遮挡） */
.fleet-card-img.icon-bg {
  background-size: cover;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.fleet-card-img.icon-bg .big-emoji {
  font-size: 110px;
  filter: drop-shadow(0 6px 16px rgba(0,0,0,0.25));
  transition: transform 0.4s ease;
}

.fleet-card:hover .fleet-card-img.icon-bg .big-emoji {
  transform: scale(1.1) rotate(-5deg);
}

.fleet-card-img .ton-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  padding: 5px 14px;
  border-radius: 6px;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(244,123,32,0.4);
}

.fleet-card-img .view-link {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(255,255,255,0.9);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: 6px;
  z-index: 2;
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
}

.fleet-card:hover .view-link {
  opacity: 1;
  transform: translateY(0);
}

.fleet-card-body {
  padding: 20px 22px 24px;
}

.fleet-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.fleet-card-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.fleet-card-body .fleet-tel {
  color: var(--accent);
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ===== 四大优势 ===== */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.adv-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  border-top: 4px solid var(--primary);
  transition: var(--transition);
}

.adv-card:nth-child(2) { border-top-color: var(--accent); }
.adv-card:nth-child(3) { border-top-color: #2e9e5b; }
.adv-card:nth-child(4) { border-top-color: #7a5af8; }

.adv-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.adv-icon {
  width: 64px;
  height: 64px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  margin: 0 auto 18px;
}

.adv-card h3 {
  font-size: 18px;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.adv-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== 企业简介 ===== */
.about-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 55px;
  align-items: center;
}

.about-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 460px;
  box-shadow: var(--shadow-lg);
}

.about-visual .main-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

/* about-visual 配图emoji版本（渐变背景+大emoji） */
.about-visual .main-img.icon-bg {
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual .main-img.icon-bg .big-emoji {
  font-size: 180px;
  filter: drop-shadow(0 10px 25px rgba(0,0,0,0.3));
}

.about-visual .exp-badge {
  position: absolute;
  bottom: 22px;
  left: 22px;
  background: var(--accent);
  color: #fff;
  padding: 16px 22px;
  border-radius: 10px;
  font-weight: 900;
  z-index: 2;
  box-shadow: 0 8px 24px rgba(244,123,32,0.45);
}

.about-visual .exp-badge .num {
  font-size: 30px;
  line-height: 1;
}

.about-visual .exp-badge .txt {
  font-size: 13px;
  margin-top: 5px;
  font-weight: 600;
}

.about-text .kicker {
  display: inline-block;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 10px;
}

.about-text h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 18px;
}

.about-text h2::after {
  content: '';
  display: block;
  width: 55px;
  height: 3px;
  background: var(--accent);
  margin-top: 12px;
  border-radius: 2px;
}

.about-text p {
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 16px;
  font-size: 15px;
}

.about-points {
  margin: 20px 0 26px;
}

.about-points li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 0;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
}

.about-points .check {
  width: 22px;
  height: 22px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

/* ===== 服务流程 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-item {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-num {
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #fff;
  font-size: 19px;
  font-weight: 800;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.step-item h3 {
  font-size: 17px;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.step-item p {
  font-size: 13.5px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== 案例 ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 280px;
  cursor: pointer;
  display: block;
  box-shadow: var(--shadow);
}

.case-card-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.5s ease;
}

/* 案例卡片emoji版本：渐变背景+大emoji，无文字 */
.case-card-img.icon-bg {
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-card-img.icon-bg .big-emoji {
  font-size: 130px;
  filter: drop-shadow(0 8px 20px rgba(0,0,0,0.3));
  transition: transform 0.4s ease;
}

.case-card:hover .case-card-img.icon-bg .big-emoji {
  transform: scale(1.1) rotate(-5deg);
}

.case-card:hover .case-card-img {
  transform: scale(1.06);
}

.case-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,42,69,0.9) 0%, transparent 60%);
}

.case-card-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  z-index: 2;
}

.case-card-info h3 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 5px;
}

.case-card-info p {
  color: rgba(255,255,255,0.75);
  font-size: 13px;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: rgba(244,123,32,0.5);
  box-shadow: var(--shadow);
}

.faq-q {
  padding: 18px 22px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--primary-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
  user-select: none;
}

.faq-q .arrow {
  transition: var(--transition);
  color: var(--accent);
  font-size: 13px;
  flex-shrink: 0;
}

.faq-item.open .arrow {
  transform: rotate(180deg);
}

.faq-a {
  display: none;
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

.faq-item.open .faq-a {
  display: block;
}

/* ===== CTA ===== */
.cta-band {
  background: linear-gradient(120deg, var(--primary-deep), var(--primary));
  color: #fff;
  padding: 55px 0;
}

.cta-band .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}

.cta-band h2 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 8px;
}

.cta-band p {
  color: rgba(255,255,255,0.85);
  font-size: 15px;
}

.cta-phone {
  font-size: 40px;
  font-weight: 900;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: 1px;
}

/* ===== 新闻 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: block;
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.news-card-img {
  height: 185px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.news-card:hover .news-card-img img {
  transform: scale(1.06);
}

.news-card-body {
  padding: 18px 20px;
}

.news-date {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
}

.news-card h3 {
  font-size: 16px;
  color: var(--primary-dark);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card p {
  font-size: 13.5px;
  color: var(--text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--primary-deep);
  color: #fff;
  padding: 55px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 45px;
  margin-bottom: 40px;
}

.footer h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.footer-about .logo-text {
  color: #fff;
  font-size: 20px;
  display: block;
  margin-bottom: 14px;
}

.footer-about p {
  color: rgba(255,255,255,0.65);
  font-size: 13.5px;
  line-height: 1.9;
}

.footer-links a {
  display: block;
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  padding: 6px 0;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-contact p {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.6;
}

.footer-contact .phone-big {
  display: block;
  font-size: 26px;
  font-weight: 900;
  color: var(--accent);
  margin: 12px 0 18px;
  letter-spacing: 1px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 0;
  text-align: center;
  color: rgba(255,255,255,0.35);
  font-size: 13px;
}

/* ===== 内页横幅 ===== */
.page-hero {
  position: relative;
  padding: 70px 0;
  background: linear-gradient(120deg, var(--primary-deep), var(--primary));
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(15,42,69,0.55);
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.page-hero h1 {
  font-size: 36px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 10px;
}

.page-hero .sub {
  color: rgba(255,255,255,0.8);
  font-size: 16px;
}

.breadcrumb {
  margin-top: 14px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}

.breadcrumb a {
  color: rgba(255,255,255,0.85);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb span {
  margin: 0 8px;
}

/* ===== 内容布局 ===== */
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 35px;
  align-items: start;
}

.content-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 38px;
  box-shadow: var(--shadow);
}

.content-card h1 {
  font-size: 28px;
  color: var(--primary-dark);
  margin-bottom: 16px;
}

.content-card p {
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 15px;
  font-size: 15px;
}

.content-card h2 {
  font-size: 21px;
  color: var(--primary-dark);
  margin: 28px 0 14px;
}

.content-card ul,
.content-card ol {
  padding-left: 22px;
  margin-bottom: 16px;
}

.content-card li {
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 8px;
  font-size: 15px;
}

.article-meta {
  display: flex;
  gap: 20px;
  color: var(--text-lighter);
  font-size: 13px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 22px;
}

.sidebar-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 22px;
  box-shadow: var(--shadow);
}

.sidebar-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
}

.sidebar-links a {
  display: flex;
  justify-content: space-between;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text);
  transition: var(--transition);
}

.sidebar-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.sidebar-contact {
  text-align: center;
  background: var(--primary-light);
  border: none;
}

.sidebar-contact h3 {
  border-bottom-color: var(--accent);
}

.sidebar-contact .phone {
  display: block;
  font-size: 24px;
  font-weight: 900;
  color: var(--accent);
  margin: 14px 0;
  letter-spacing: 1px;
}

.sidebar-contact p {
  color: var(--text-light);
  font-size: 13px;
}

/* ===== 列表项 ===== */
.list-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 22px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  margin-bottom: 20px;
}

.list-item:hover {
  border-color: rgba(244,123,32,0.4);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.list-item .li-img {
  min-height: 175px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.list-item .li-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.list-item .li-body {
  padding: 22px 24px 22px 0;
}

.list-item .li-date {
  color: var(--accent);
  font-size: 12px;
  margin-bottom: 8px;
  font-weight: 600;
}

.list-item h2 {
  font-size: 19px;
  color: var(--primary-dark);
  margin-bottom: 10px;
  line-height: 1.4;
}

.list-item h2 a:hover {
  color: var(--accent);
}

.list-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== 联系 ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 45px;
  align-items: start;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 17px 0;
  border-bottom: 1px solid var(--border);
}

.contact-item .ico {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-item h4 {
  color: var(--primary-dark);
  font-size: 16px;
  margin-bottom: 6px;
}

.contact-item p {
  color: var(--text-light);
  font-size: 14px;
}

.contact-item .big-phone {
  font-size: 26px;
  font-weight: 900;
  color: var(--accent);
}

.form-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow);
}

.form-card h3 {
  font-size: 22px;
  color: var(--primary-dark);
  margin-bottom: 6px;
}

.form-card > p {
  color: var(--text-lighter);
  font-size: 14px;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 7px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 15px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31,78,121,0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* ===== 后台 ===== */
.admin-page {
  background: var(--bg-light);
  min-height: 100vh;
}

.admin-header {
  background: var(--primary-deep);
  color: #fff;
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.admin-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.admin-header .logo-text {
  color: #fff;
  font-size: 17px;
}

.admin-body {
  padding: 35px 0;
}

.admin-body .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 35px;
}

.admin-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow);
}

.admin-card h2 {
  font-size: 20px;
  color: var(--primary-dark);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
  display: inline-block;
}

.admin-articles {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.admin-article-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 16px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.admin-article-info h4 {
  color: var(--primary-dark);
  font-size: 15px;
  margin-bottom: 5px;
}

.admin-article-info .date {
  color: var(--text-lighter);
  font-size: 12px;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}

.btn-edit {
  background: var(--primary-light);
  color: var(--primary);
}

.btn-edit:hover {
  background: #d5e4f2;
}

.btn-danger {
  background: #fee2e2;
  color: #dc2626;
}

.btn-danger:hover {
  background: #fecaca;
}

.success-message {
  display: none;
  background: #d1fae5;
  color: #065f46;
  padding: 12px 18px;
  border-radius: 8px;
  margin-bottom: 18px;
  font-size: 14px;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-lighter);
}

.empty-state .icon {
  font-size: 44px;
  margin-bottom: 14px;
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .fleet-grid,
  .adv-grid,
  .cases-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-wrap,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .detail-layout {
    grid-template-columns: 1fr;
  }

  .list-item {
    grid-template-columns: 1fr;
  }

  .list-item .li-body {
    padding: 0 22px 22px;
  }

  .admin-body .container {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stats-strip .container {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-item {
    border-right: none;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 8px 25px rgba(31,78,121,0.15);
    gap: 6px;
  }

  .nav.open {
    display: flex;
  }

  .top-strip .t-left span:not(.t-phone) {
    display: none;
  }

  .banner {
    height: auto;
    padding: 70px 0;
  }

  .banner h1 {
    font-size: 32px;
  }

  .section {
    padding: 55px 0;
  }

  .sec-head h2 {
    font-size: 27px;
  }

  .fleet-grid,
  .adv-grid,
  .steps-grid,
  .cases-grid,
  .news-grid {
    grid-template-columns: 1fr;
  }

  .cta-band .container {
    flex-direction: column;
    text-align: center;
  }

  .cta-phone {
    font-size: 30px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .page-hero h1 {
    font-size: 28px;
  }

  .content-card {
    padding: 24px;
  }

  .about-visual {
    height: 320px;
  }
}