/* roulang page: index */
/* ====== 设计变量 ====== */
:root {
  --primary: #2F6B8A;
  --primary-strong: #1D4C67;
  --primary-soft: #E6EEF3;
  --secondary: #4E9EAA;
  --accent: #D58A43;
  --bg: #F6F8FB;
  --surface: #FFFFFF;
  --text: #1E2A32;
  --text-muted: #5A6B78;
  --border: rgba(47,107,138,0.12);
  --shadow-sm: 0 1px 2px rgba(30,42,50,0.06);
  --shadow-md: 0 4px 12px rgba(30,42,50,0.08);
  --shadow-lg: 0 12px 30px rgba(30,42,50,0.12);
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --container-max: 1200px;
  --gap: 24px;
  --section-gap: 80px;
  --font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-num: "Inter", "Arial Narrow", sans-serif;
}
/* ====== Reset ====== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: all 0.2s ease; }
a:hover { color: var(--primary-strong); text-decoration: underline; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea { font-family: inherit; }
/* ====== 容器 ====== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
/* ====== 按钮 ====== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: all 0.2s ease;
  text-decoration: none;
  gap: 8px;
}
.btn-primary {
  background-color: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background-color: var(--primary-strong);
  color: #fff;
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-outline {
  background-color: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover {
  background-color: var(--primary-soft);
  color: var(--primary-strong);
  text-decoration: none;
  border-color: rgba(47,107,138,0.3);
}
.btn-accent {
  background-color: var(--accent);
  color: #fff;
}
.btn-accent:hover {
  background-color: #c9782f;
  color: #fff;
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.btn:disabled, .btn.disabled {
  opacity: 0.5;
  box-shadow: none;
  cursor: not-allowed;
}
/* ====== 标签/胶囊 ====== */
.badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  background-color: var(--primary-soft);
  color: var(--primary-strong);
}
.badge-hot {
  background-color: rgba(213,138,67,0.15);
  color: var(--accent);
}
.badge-outline {
  background-color: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  background-color: var(--primary-soft);
  color: var(--primary-strong);
  transition: all 0.2s ease;
}
.tag:hover {
  background-color: var(--primary);
  color: #fff;
  text-decoration: none;
}
/* ====== 导航 ====== */
.site-header {
  position: relative;
  z-index: 100;
  background: var(--surface);
}
.header-top {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.5px;
  font-family: var(--font-num);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}
.logo:hover { text-decoration: none; }
.header-tools {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: 1;
  justify-content: flex-end;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 0 16px;
  height: 40px;
  width: 260px;
  transition: all 0.2s ease;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47,107,138,0.15);
  background: var(--surface);
}
.search-box input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 14px;
  color: var(--text);
  height: 100%;
}
.search-box input::placeholder {
  color: var(--text-muted);
}
.search-box button {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  padding: 4px;
  transition: color 0.2s ease;
}
.search-box button:hover {
  color: var(--primary);
}
.search-icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
}
.search-icon circle { cx: 8; cy: 8; r: 6; }
.search-icon line { x1: 12.5; y1: 12.5; x2: 17; y2: 17; }
.hot-words {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.hot-words-label {
  color: var(--text-muted);
  font-size: 13px;
  white-space: nowrap;
}
.hot-words a {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.hot-words a:hover {
  color: var(--accent);
}
.header-nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
.header-nav.sticky {
  position: sticky;
  top: 0;
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 56px;
}
.nav-link {
  display: flex;
  align-items: center;
  padding: 0 18px;
  height: 56px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  position: relative;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  opacity: 0;
  transform: scaleX(0.6);
  transition: all 0.2s ease;
}
.nav-link:hover {
  background: var(--primary-soft);
  color: var(--primary-strong);
  text-decoration: none;
}
.nav-link.active {
  color: var(--primary-strong);
  font-weight: 600;
}
.nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}
.nav-cta {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  border-radius: var(--radius-md);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.nav-cta:hover {
  background: var(--primary-strong);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}
/* 移动端汉堡 */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-md);
  background: transparent;
  transition: background 0.2s ease;
}
.menu-toggle:hover {
  background: var(--primary-soft);
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
body.menu-open .menu-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
body.menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}
body.menu-open .menu-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
/* 移动抽屉 */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  height: 100vh;
  background: var(--surface);
  box-shadow: -4px 0 30px rgba(30,42,50,0.15);
  z-index: 200;
  padding: 24px;
  gap: 8px;
  flex-direction: column;
  transition: right 0.3s ease;
  overflow-y: auto;
}
body.menu-open .mobile-drawer {
  right: 0;
}
.drawer-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(30,42,50,0.5);
  z-index: 199;
  opacity: 0;
  transition: opacity 0.3s ease;
}
body.menu-open .drawer-overlay {
  opacity: 1;
}
.mobile-drawer .drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.drawer-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.drawer-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 20px;
  color: var(--text-muted);
  transition: all 0.2s ease;
}
.drawer-close:hover {
  background: var(--primary-soft);
  color: var(--text);
}
.mobile-drawer .nav-link {
  display: flex;
  align-items: center;
  height: 48px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}
.mobile-drawer .nav-link:hover,
.mobile-drawer .nav-link.active {
  background: var(--primary-soft);
  color: var(--primary-strong);
  text-decoration: none;
}
.mobile-drawer .nav-link::after {
  display: none;
}
.drawer-search {
  margin-bottom: 16px;
}
.mobile-hot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.mobile-hot a {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--primary-soft);
  font-size: 13px;
  color: var(--primary-strong);
  text-decoration: none;
}
.mobile-hot a:hover {
  background: var(--primary);
  color: #fff;
}
/* ====== Hero ====== */
.hero {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 80px 0 72px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.94) 0%, rgba(255,255,255,0.85) 45%, rgba(255,255,255,0.4) 100%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  min-height: 440px;
}
.hero-content {
  max-width: 540px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 24px;
}
.hero-badge i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  display: inline-block;
}
.hero h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero-sub {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 460px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--border);
  padding-top: 28px;
}
.hero-stat {
  flex: 1;
  padding-right: 24px;
  position: relative;
}
.hero-stat + .hero-stat {
  padding-left: 24px;
}
.hero-stat + .hero-stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: var(--border);
}
.hero-stat-num {
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.hero-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}
.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 360px;
}
.hero-visual-overlay {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: rgba(30,42,50,0.75);
  color: #fff;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.5;
  backdrop-filter: blur(4px);
}
.hero-visual-overlay strong {
  font-size: 16px;
  display: block;
  margin-bottom: 4px;
}
/* ====== 数据窄条 ====== */
.stats-strip {
  background: var(--primary-soft);
  border-bottom: 1px solid var(--border);
}
.stats-strip-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  height: 72px;
  align-items: center;
}
.stats-strip-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 24px;
  border-left: 1px solid rgba(47,107,138,0.15);
  text-align: center;
}
.stats-strip-item:first-child {
  border-left: none;
}
.stats-strip-item strong {
  font-size: 14px;
  color: var(--primary-strong);
  font-weight: 600;
}
.stats-strip-item span {
  font-size: 13px;
  color: var(--text-muted);
}
/* ====== 区块通用 ====== */
.section {
  padding: var(--section-gap) 0;
}
.section-bg-soft {
  background: var(--bg);
}
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-bar {
  display: block;
  width: 40px;
  height: 4px;
  background: var(--primary);
  border-radius: 4px;
  margin: 0 auto;
}
.section-sub {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 14px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
/* ====== 功能卡片 4列 ====== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}
.feature-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 32px 28px;
  border-top: 4px solid var(--primary);
  transition: all 0.2s ease;
  position: relative;
}
.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}
.feature-icon svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}
/* ====== 错位3列 ====== */
.offset-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.offset-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}
.offset-card:nth-child(2) {
  transform: translateY(24px);
}
.offset-card:hover {
  transform: translateY(2px);
  box-shadow: var(--shadow-lg);
}
.offset-card:nth-child(2):hover {
  transform: translateY(26px);
}
.offset-cover {
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
}
.offset-cover::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 80px;
  background: linear-gradient(transparent, rgba(30,42,50,0.35));
  pointer-events: none;
}
.offset-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.offset-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.4;
}
.offset-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}
.offset-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-top: 20px;
  text-decoration: none;
  transition: gap 0.2s ease;
}
.offset-link:hover {
  gap: 10px;
  text-decoration: none;
  color: var(--primary-strong);
}
/* ====== 使用场景 ====== */
.scene-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 48px;
}
.scene-block:last-child {
  margin-bottom: 0;
}
.scene-block:nth-child(even) .scene-image {
  order: 2;
}
.scene-block:nth-child(even) .scene-content {
  order: 1;
}
.scene-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  height: 300px;
  background-size: cover;
  background-position: center;
}
.scene-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.scene-content h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}
.scene-content p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}
.scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
/* ====== 案例 ====== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.case-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 28px;
  transition: all 0.2s ease;
}
.case-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.case-logo {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
}
.case-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.4;
}
.case-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.case-data {
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}
.case-data-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}
/* ====== 价格方案 ====== */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  align-items: stretch;
}
.price-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  border: 2px solid transparent;
  transition: all 0.2s ease;
}
.price-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.price-card.highlight {
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-lg);
}
.price-card .price-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.price-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.price-amount {
  font-family: var(--font-num);
  font-size: 42px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}
.price-amount small {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-muted);
}
.price-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.price-features {
  list-style: none;
  padding: 0;
  margin-bottom: 32px;
  flex: 1;
}
.price-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  padding: 8px 0;
  line-height: 1.6;
  border-bottom: 1px solid var(--border);
}
.price-features li:last-child {
  border-bottom: none;
}
.price-features li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 8px;
}
.price-card .btn {
  width: 100%;
}
/* ====== 资讯列表 ====== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}
.news-card {
  display: flex;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all 0.2s ease;
  text-decoration: none;
  color: var(--text);
}
.news-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  color: var(--text);
}
.news-cover {
  width: 176px;
  min-height: 140px;
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
  background-color: var(--primary-soft);
}
.news-body {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.news-meta .date {
  font-size: 13px;
  color: var(--text-muted);
}
.news-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  margin: 0;
  transition: color 0.2s ease;
}
.news-card:hover .news-title {
  color: var(--primary);
}
.news-summary {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
}
.news-more {
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}
.news-card:hover .news-more {
  gap: 8px;
}
/* 空状态 */
.empty-state {
  padding: 60px 24px;
  text-align: center;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.empty-state .empty-icon {
  font-size: 48px;
  display: block;
  margin-bottom: 16px;
  opacity: 0.5;
}
.empty-state p {
  font-size: 14px;
  color: var(--text-muted);
}
/* ====== FAQ ====== */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}
.faq-item {
  border-bottom: 1px solid var(--border);
  transition: background 0.2s ease;
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: color 0.2s ease;
  position: relative;
}
.faq-q:hover {
  color: var(--primary);
}
.faq-q.active {
  color: var(--primary);
}
.faq-q .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 400;
  color: var(--primary);
  flex-shrink: 0;
  transition: all 0.3s ease;
}
.faq-q.active .faq-icon {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 8px;
}
.faq-a-inner {
  padding-bottom: 20px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
}
/* ====== CTA ====== */
.cta-section {
  background: var(--primary-soft);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(circle at 20% 30%, rgba(47,107,138,0.06) 0%, rgba(47,107,138,0.06) 2px, transparent 2px);
  background-size: 24px 24px;
  pointer-events: none;
}
.cta-inner {
  text-align: center;
  position: relative;
}
.cta-inner h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}
.cta-inner p {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
/* ====== 页脚 ====== */
.site-footer {
  background: #12222E;
  color: #B8C4CD;
  padding-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .logo-text {
  color: #fff;
  font-size: 20px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 16px;
  color: #8FA3B0;
}
.footer-col h3 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: #8FA3B0;
  text-decoration: none;
  transition: color 0.2s ease;
}
.footer-col ul li a:hover {
  color: #fff;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: #8FA3B0;
  margin-bottom: 12px;
}
.footer-subscribe p {
  font-size: 14px;
  color: #8FA3B0;
  margin-bottom: 16px;
  line-height: 1.6;
}
.subscribe-form {
  display: flex;
  gap: 8px;
}
.subscribe-form input {
  flex: 1;
  height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: all 0.2s ease;
}
.subscribe-form input::placeholder {
  color: #6B7F8C;
}
.subscribe-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47,107,138,0.25);
  background: rgba(255,255,255,0.12);
}
.subscribe-form .btn {
  height: 44px;
  padding: 0 20px;
  font-size: 14px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #637A87;
}
.footer-bottom-inner a {
  color: #8FA3B0;
  text-decoration: none;
}
.footer-bottom-inner a:hover {
  color: #fff;
}
.footer-links {
  display: flex;
  gap: 20px;
}
/* ====== 响应式 ====== */
@media (max-width: 1199px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .header-tools .search-box {
    width: 200px;
  }
}
@media (max-width: 991px) {
  :root {
    --section-gap: 64px;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .offset-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .offset-card:nth-child(2) {
    transform: none;
  }
  .offset-card:nth-child(2):hover {
    transform: translateY(2px);
  }
  .offset-card:nth-child(3) {
    grid-column: span 2;
  }
  .price-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }
  .scene-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .scene-block:nth-child(even) .scene-image {
    order: 1;
  }
  .scene-block:nth-child(even) .scene-content {
    order: 2;
  }
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .hero {
    padding: 56px 0;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .hero-content {
    max-width: 100%;
  }
  .hero-visual {
    min-height: 260px;
  }
  .hero-visual img {
    min-height: 260px;
  }
  .hero-stats {
    flex-wrap: wrap;
  }
  .hero-stat {
    padding-right: 16px;
  }
  .hero-stat + .hero-stat {
    padding-left: 16px;
  }
}
@media (max-width: 767px) {
  :root {
    --section-gap: 48px;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .header-top {
    height: auto;
    padding: 8px 0;
  }
  .header-top-inner {
    height: 56px;
    gap: 12px;
  }
  .header-tools .search-box {
    display: none;
  }
  .header-tools .hot-words {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .mobile-drawer {
    display: flex;
  }
  .header-nav {
    display: none;
  }
  .hero h1 {
    font-size: 28px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }
  .hero-stat {
    padding: 0 !important;
  }
  .hero-stat + .hero-stat::before {
    display: none;
  }
  .stats-strip-inner {
    grid-template-columns: 1fr;
    height: auto;
    padding: 16px 0;
    gap: 8px;
  }
  .stats-strip-item {
    border-left: none;
    justify-content: flex-start;
    padding: 4px 0;
    text-align: left;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .offset-grid {
    grid-template-columns: 1fr;
  }
  .offset-card:nth-child(3) {
    grid-column: span 1;
  }
  .case-grid {
    grid-template-columns: 1fr;
  }
  .news-card {
    flex-direction: column;
  }
  .news-cover {
    width: 100%;
    height: 160px;
  }
  .news-body {
    padding: 16px;
  }
  .section-head h2 {
    font-size: 22px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
  }
  .faq-wrap {
    padding: 16px;
  }
  .faq-q {
    font-size: 15px;
    padding: 16px 4px;
  }
  .price-card {
    padding: 28px 24px;
  }
  .scene-image {
    height: 220px;
  }
  .cta-section {
    padding: 56px 0;
  }
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-actions .btn {
    width: 100%;
  }
}
@media (max-width: 520px) {
  .hero-stat-num {
    font-size: 24px;
  }
  .logo-text {
    font-size: 17px;
  }
  .logo-mark {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }
  .hero {
    padding-top: 40px;
  }
  .hero-visual {
    min-height: 200px;
  }
  .hero-visual img {
    min-height: 200px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #2f6b8a;
  --primary-strong: #1d4c67;
  --primary-soft: #e6eef3;
  --secondary: #4e9eaa;
  --accent: #d58a43;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #1e2a32;
  --text-muted: #5a6b78;
  --border: rgba(47,107,138,0.12);
  --shadow-sm: 0 1px 2px rgba(30,42,50,0.06);
  --shadow-md: 0 4px 12px rgba(30,42,50,0.08);
  --shadow-lg: 0 12px 30px rgba(30,42,50,0.12);
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --nav-h: 56px;
  --header-top-h: 40px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
input:focus,button:focus{outline:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-header{text-align:center;max-width:640px;margin:0 auto 48px}
.section-header h2{font-size:26px;font-weight:700;line-height:1.3}
.section-line{display:block;width:40px;height:4px;background:var(--primary);border-radius:2px;margin:16px auto 12px}
.section-header p{color:var(--text-muted);font-size:15px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-md);font-size:15px;font-weight:600;
  line-height:1;border:1px solid transparent;cursor:pointer;transition:all .2s ease;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-strong);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{border-color:var(--border);color:var(--text);background:transparent}
.btn-outline:hover{background:var(--primary-soft);border-color:var(--primary)}
.btn-lg{padding:15px 36px;font-size:16px}
.btn:focus{box-shadow:0 0 0 3px rgba(47,107,138,0.18);outline:none}

.link-more{color:var(--primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:color .2s}
.link-more:hover{color:var(--primary-strong);text-decoration:underline}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:var(--surface);box-shadow:0 0 0 rgba(0,0,0,0);transition:box-shadow .2s ease}
.site-header.scrolled{box-shadow:var(--shadow-sm)}
.header-top{height:var(--header-top-h);background:var(--surface);border-bottom:1px solid var(--border);transition:height .25s ease,padding .25s ease}
.site-header.scrolled .header-top{height:0;overflow:hidden;border-bottom:none}
.header-top-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:8px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:8px;background:var(--primary);color:#fff;
  font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center;letter-spacing:0.5px;
}
.logo-text{font-size:16px;font-weight:700;color:var(--text);letter-spacing:0.2px}
.header-tools{display:flex;align-items:center;gap:16px;flex:1;justify-content:flex-end}
.header-search{display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:0 12px;height:32px;width:224px;transition:border-color .2s,box-shadow .2s}
.header-search input{border:none;background:transparent;font-size:13px;flex:1;outline:none;color:var(--text)}
.header-search button{border:none;background:transparent;color:var(--text-muted);cursor:pointer;padding:0 0 0 8px;font-size:13px;transition:color .2s}
.header-search button:hover{color:var(--primary)}
.header-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,107,138,0.12)}
.hot-tags{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-muted)}
.hot-tags span{white-space:nowrap}
.hot-tags a{color:var(--text-muted);background:var(--primary-soft);border-radius:99px;padding:2px 10px;transition:color .2s,background .2s}
.hot-tags a:hover{color:#fff;background:var(--accent)}
.menu-toggle{display:none;border:none;background:none;font-size:20px;color:var(--text);cursor:pointer;padding:6px}

.header-nav{background:var(--surface);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;gap:4px;height:var(--nav-h)}
.nav-link{
  padding:0 18px;font-size:15px;font-weight:600;color:var(--text);position:relative;
  display:flex;align-items:center;height:100%;transition:color .2s;
}
.nav-link::after{content:"";position:absolute;left:18px;right:18px;bottom:0;height:2px;background:var(--primary);border-radius:1px 1px 0 0;opacity:0;transform:scaleX(.5);transition:all .2s ease}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{opacity:1;transform:scaleX(1)}
.nav-link.active{color:var(--primary-strong)}
.nav-link.active::after{opacity:1;transform:scaleX(1)}
.nav-cta{
  margin-left:auto;padding:8px 20px;border-radius:var(--radius-md);background:var(--primary);
  color:#fff;font-size:14px;font-weight:600;transition:all .2s;
}
.nav-cta:hover{background:var(--primary-strong);box-shadow:var(--shadow-sm)}

/* ===== Page Hero ===== */
.page-hero{
  background:linear-gradient(90deg,rgba(230,238,243,0.97) 0%,rgba(246,248,251,0.94) 45%,rgba(255,255,255,0.88) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:72px 0 64px;border-bottom:1px solid var(--border);
}
.breadcrumb{font-size:13px;color:var(--text-muted);margin-bottom:28px}
.breadcrumb a{color:var(--text-muted);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{margin:0 8px;font-size:10px;color:#b0bcc4}
.page-hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;background:var(--primary);color:#fff;
  font-size:12px;font-weight:600;padding:4px 14px;border-radius:99px;margin-bottom:16px;
}
.hero-badge i{font-size:11px}
.page-hero h1{font-size:34px;font-weight:700;line-height:1.2;margin-bottom:16px}
.page-hero-sub{font-size:16px;line-height:1.7;color:var(--text-muted);max-width:540px}
.hero-actions{display:flex;gap:16px;margin-top:32px;flex-wrap:wrap}
.page-hero-figure img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:100%;object-fit:cover;aspect-ratio:4/3}

/* ===== Stats Bar ===== */
.stats-bar{background:var(--primary-soft);border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;min-height:64px}
.stat-item{display:flex;flex-direction:column;justify-content:center;align-items:center;padding:16px 8px;border-right:1px solid rgba(47,107,138,0.1)}
.stat-item:last-child{border-right:none}
.stat-num{font-family:"Inter","Arial Narrow",sans-serif;font-size:24px;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-label{font-size:13px;color:var(--text-muted);margin-top:2px}

/* ===== Grid ===== */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

/* ===== Feature Cards ===== */
.feature-card{
  background:var(--surface);border-radius:var(--radius-lg);padding:28px 24px;
  box-shadow:var(--shadow-md);border-top:4px solid var(--primary);transition:all .2s ease;
}
.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.feature-icon{
  width:48px;height:48px;border-radius:12px;background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px;
}
.feature-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--text-muted);line-height:1.6}

/* ===== Featured Products (staggered) ===== */
.featured-products{background:var(--bg)}
.featured-card{
  background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-md);transition:all .2s ease;display:flex;flex-direction:column;
}
.featured-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.staggered .featured-card:nth-child(2){transform:translateY(24px)}
.staggered .featured-card:nth-child(2):hover{transform:translateY(20px)}
.featured-figure img{width:100%;height:180px;object-fit:cover}
.featured-body{padding:24px 24px 28px;display:flex;flex-direction:column;flex:1}
.featured-body h3{font-size:17px;font-weight:600;margin-bottom:8px}
.featured-body p{font-size:14px;color:var(--text-muted);line-height:1.6;margin-bottom:16px;flex:1}
.featured-tag{font-size:12px;color:var(--secondary);font-weight:600;margin-bottom:6px}

/* ===== Scenarios ===== */
.scenario-row{
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
  padding:32px 0;background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:32px;margin-bottom:24px;transition:box-shadow .2s ease;
}
.scenario-row:hover{box-shadow:var(--shadow-md)}
.scenario-image img{border-radius:var(--radius-lg);box-shadow:var(--shadow-md);width:100%;height:260px;object-fit:cover}
.scenario-content h3{font-size:20px;font-weight:600;margin-bottom:12px}
.scenario-content p{font-size:15px;color:var(--text-muted);line-height:1.7;margin-bottom:16px}
.scenario-tags{display:flex;gap:8px;flex-wrap:wrap}
.scenario-tags span{background:var(--primary-soft);color:var(--primary-strong);font-size:12px;font-weight:500;padding:4px 12px;border-radius:99px}

/* ===== Process ===== */
.process-section{background:var(--primary-soft);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.process-section .section-header h2{color:var(--text)}
.process-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-step{
  background:var(--surface);border-radius:var(--radius-lg);padding:28px 24px;text-align:center;
  box-shadow:var(--shadow-sm);transition:all .2s ease;border-top:3px solid transparent;
}
.process-step:hover{box-shadow:var(--shadow-md);border-top-color:var(--accent)}
.step-num{font-family:"Inter","Arial Narrow",sans-serif;font-size:34px;font-weight:800;color:var(--primary);line-height:1;margin-bottom:12px;font-variant-numeric:tabular-nums}
.process-step h3{font-size:16px;font-weight:600;margin-bottom:8px}
.process-step p{font-size:13px;color:var(--text-muted);line-height:1.6}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:12px;margin-bottom:12px;transition:box-shadow .2s, border-color .2s;overflow:hidden}
.faq-item.active{border-color:rgba(47,107,138,0.35);box-shadow:var(--shadow-md)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:none;padding:20px 24px;font-size:16px;font-weight:600;color:var(--text);
  cursor:pointer;text-align:left;transition:color .2s;
}
.faq-item.active .faq-question{color:var(--primary)}
.faq-icon{
  width:24px;height:24px;border-radius:50%;border:1px solid var(--primary);display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--primary);flex-shrink:0;transition:all .2s ease;
}
.faq-item.active .faq-icon{background:var(--primary);color:#fff;border-color:var(--primary)}
.faq-answer{max-height:0;overflow:hidden;padding:0 24px;transition:max-height .3s ease,padding .3s ease}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 20px}
.faq-answer p{font-size:15px;color:var(--text-muted);line-height:1.7;border-top:1px solid var(--border);padding-top:14px}

/* ===== CTA ===== */
.cta-banner{
  background:var(--primary-soft);background-image:radial-gradient(rgba(47,107,138,0.08) 1px,transparent 1px);background-size:24px 24px;
  text-align:center;padding:80px 0;
}
.cta-banner h2{font-size:28px;font-weight:700;margin-bottom:12px}
.cta-banner p{font-size:16px;color:var(--text-muted);margin-bottom:32px}
.cta-banner .btn-primary{background:var(--primary);color:#fff}
.cta-banner .btn-primary:hover{background:var(--primary-strong)}

/* ===== Footer ===== */
.site-footer{background:#12222e;color:#b8c4cd;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:48px;padding:64px 0 32px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{background:#fff;color:#12222e}
.footer-brand p{margin-top:16px;font-size:13px;color:#8fa1ae;line-height:1.7;max-width:280px}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:#b8c4cd;transition:color .2s}
.footer-col ul li a:hover{color:#fff}
.footer-contact li{font-size:14px}
.subscribe-form{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.subscribe-form input{
  flex:1;min-width:160px;height:44px;padding:0 16px;border-radius:var(--radius-md);
  border:1px solid rgba(255,255,255,0.15);background:rgba(255,255,255,0.06);color:#fff;font-size:14px;
}
.subscribe-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,107,138,0.3);outline:none}
.subscribe-form input::placeholder{color:#6f7f8b}
.subscribe-form .btn-primary{background:var(--primary);border:none}
.subscribe-form .btn-primary:hover{background:var(--secondary)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:22px 0}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px}
.footer-links{display:flex;gap:20px}
.footer-links a{color:#8fa1ae;transition:color .2s}
.footer-links a:hover{color:#fff}

/* ===== Responsive ===== */
@media (max-width:1199px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .staggered .featured-card:nth-child(2){transform:none}
  .staggered .featured-card:nth-child(2):hover{transform:none}
  .process-steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:991px){
  .nav-inner{height:auto;overflow-x:auto;padding:0 8px}
  .nav-link{padding:0 14px;font-size:14px;white-space:nowrap}
  .page-hero-inner{grid-template-columns:1fr;gap:32px}
  .scenario-row{grid-template-columns:1fr;padding:24px}
  .scenario-image img{height:220px}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .section-header h2{font-size:20px}
  .container{padding:0 16px}
  .header-top{height:56px}
  .header-top-inner{gap:8px}
  .header-tools{justify-content:flex-end;gap:8px}
  .header-search{width:36px;border:none;background:transparent;padding:0;justify-content:center}
  .header-search input{display:none}
  .header-search button{font-size:16px;color:var(--text)}
  .header-search:focus-within{box-shadow:none;border:none}
  .hot-tags{display:none}
  .menu-toggle{display:block}
  .header-nav{
    position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--surface);
    z-index:999;transform:translateX(-100%);transition:transform .3s ease;
    box-shadow:var(--shadow-lg);overflow-y:auto;border-right:1px solid var(--border);
    border-bottom:none;
  }
  .header-nav.open{transform:translateX(0)}
  .nav-inner{flex-direction:column;align-items:flex-start;height:auto;padding:24px 16px;gap:0}
  .nav-link{width:100%;height:auto;padding:14px 8px;border-bottom:1px solid var(--border);font-size:16px}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--primary)}
  .nav-cta{margin:16px 8px 0;width:calc(100% - 16px);text-align:center;padding:12px}
  .page-hero{padding:48px 0}
  .page-hero h1{font-size:26px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .page-hero-figure{margin-top:8px}
  .grid-4,.grid-3{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;row-gap:4px}
  .stat-item:nth-child(2){border-right:none}
  .stat-item{border-bottom:1px solid rgba(47,107,138,0.08);padding:12px 8px}
  .stat-item:nth-child(n+3){border-bottom:none}
  .process-steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:48px 0 24px}
  .footer-brand p{max-width:none}
  .footer-bottom-inner{flex-direction:column;text-align:center}
  .footer-links{justify-content:center}
  .cta-banner{padding:48px 0}
  .cta-banner h2{font-size:22px}
}

/* roulang page: article */
:root{
    --primary:#2F6B8A;
    --primary-strong:#1D4C67;
    --primary-soft:#E6EEF3;
    --secondary:#4E9EAA;
    --accent:#D58A43;
    --bg:#F6F8FB;
    --surface:#FFFFFF;
    --text:#1E2A32;
    --text-muted:#5A6B78;
    --border:rgba(47,107,138,0.12);
    --shadow-sm:0 1px 2px rgba(30,42,50,0.06);
    --shadow-md:0 4px 12px rgba(30,42,50,0.08);
    --shadow-lg:0 12px 30px rgba(30,42,50,0.12);
    --radius-md:8px;
    --radius-lg:16px;
    --radius-pill:999px;
    --font-main:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    --font-num:"Inter","Arial Narrow",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:var(--font-main);
    font-size:16px;
    line-height:1.7;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:all .2s ease}
a:hover{color:var(--primary-strong)}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:14px}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
/* Logo */
.logo{
    display:inline-flex;align-items:center;gap:8px;
    font-size:16px;font-weight:700;color:var(--text);white-space:nowrap
}
.logo:hover{color:var(--text)}
.logo-mark{
    display:inline-flex;align-items:center;justify-content:center;
    width:30px;height:30px;border-radius:6px;background:var(--primary);color:#fff;
    font-size:13px;font-weight:800;letter-spacing:.5px
}
.logo-text{font-size:15px;font-family:var(--font-main);font-weight:700;color:var(--text)}
/* Header */
.site-header{
    background:var(--surface);
    border-bottom:1px solid var(--border);
    position:relative;z-index:100
}
.topbar{
    border-bottom:1px solid var(--border);
    background:var(--surface)
}
.topbar-inner{
    display:flex;align-items:center;justify-content:space-between;
    height:48px;gap:16px
}
.topbar-right{display:flex;align-items:center;gap:12px}
.search-box{
    display:flex;align-items:center;background:var(--bg);
    border:1px solid var(--border);border-radius:var(--radius-pill);
    height:34px;padding:0 6px 0 14px;width:224px;transition:border-color .2s, box-shadow .2s
}
.search-box:focus-within{
    border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(47,107,138,0.15)
}
.search-box input{
    flex:1;border:none;outline:none;background:transparent;
    font-size:13px;color:var(--text);height:100%
}
.search-box input::placeholder{color:#9AA7B0}
.search-box button{
    width:24px;height:24px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    color:var(--text-muted);font-size:14px;transition:all .2s
}
.search-box button:hover{color:var(--primary)}
.hot-keywords{display:flex;align-items:center;gap:6px}
.hot-tag{
    display:inline-block;padding:3px 12px;border-radius:var(--radius-pill);
    background:var(--primary-soft);color:var(--primary);
    font-size:12px;font-weight:500;transition:all .2s
}
.hot-tag:hover{background:var(--accent);color:#fff}
.menu-toggle{
    display:none;width:36px;height:36px;border-radius:8px;
    align-items:center;justify-content:center;
    font-size:20px;color:var(--text);background:var(--primary-soft);
    transition:all .2s
}
.menu-toggle:hover{background:var(--primary);color:#fff}
/* Nav */
.header-nav{
    background:var(--surface);
    transition:box-shadow .2s
}
.header-nav.scrolled{
    box-shadow:var(--shadow-sm)
}
.nav-inner{
    display:flex;align-items:center;gap:4px;height:56px
}
.nav-link{
    display:inline-flex;align-items:center;justify-content:center;
    padding:0 16px;height:56px;color:var(--text);
    font-size:14px;font-weight:500;
    border-bottom:2px solid transparent;
    transition:all .2s;white-space:nowrap
}
.nav-link:hover{background:var(--primary-soft);color:var(--primary)}
.nav-link.active{
    color:var(--primary);
    border-bottom-color:var(--primary);
    font-weight:600
}
.nav-cta{
    display:inline-flex;align-items:center;justify-content:center;
    margin-left:auto;padding:8px 20px;border-radius:var(--radius-md);
    background:var(--primary);color:#fff;font-size:13px;font-weight:600;
    transition:all .2s;white-space:nowrap
}
.nav-cta:hover{background:var(--primary-strong);color:#fff;box-shadow:var(--shadow-md)}
/* Sticky nav */
.site-header.sticky .topbar{
    display:none
}
.site-header.sticky .header-nav{
    position:sticky;top:0;z-index:200;box-shadow:var(--shadow-sm)
}
/* Main layout */
.main-wrapper{
    padding:40px 0 0;
    min-height:60vh
}
/* Breadcrumb */
.breadcrumb{
    display:flex;align-items:center;flex-wrap:wrap;
    gap:6px;font-size:13px;color:var(--text-muted);
    margin-bottom:24px;padding:12px 0
}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C2CBD2}
.breadcrumb .current{color:var(--text);font-weight:500;max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* Article */
.article-wrap{
    background:var(--surface);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-md);
    padding:40px 48px 48px;
    margin-bottom:40px
}
.article-header{
    margin-bottom:28px;
    border-bottom:1px solid var(--border);
    padding-bottom:24px
}
.article-header h1{
    font-size:32px;font-weight:700;line-height:1.3;
    color:var(--text);margin-bottom:16px
}
.article-meta{
    display:flex;align-items:center;flex-wrap:wrap;
    gap:12px;font-size:13px;color:var(--text-muted)
}
.article-meta .meta-category{
    display:inline-flex;align-items:center;
    padding:3px 14px;border-radius:var(--radius-pill);
    background:var(--primary-soft);color:var(--primary);
    font-size:12px;font-weight:600
}
.meta-line{color:#D5DCE1}
.article-cover{
    margin:0 0 32px;
    border-radius:var(--radius-lg);
    overflow:hidden;
    box-shadow:var(--shadow-md);
    max-height:440px
}
.article-cover img{
    width:100%;height:100%;object-fit:cover
}
/* Article content */
.article-body{
    font-size:16px;line-height:1.9;color:var(--text);
    max-width:800px
}
.article-body p{
    margin-bottom:20px
}
.article-body h2{
    font-size:24px;font-weight:700;line-height:1.4;
    margin:36px 0 16px;color:var(--text);
    padding-bottom:10px;
    position:relative
}
.article-body h2::after{
    content:'';display:block;width:40px;height:3px;
    background:var(--primary);border-radius:2px;margin-top:8px
}
.article-body h3{
    font-size:18px;font-weight:600;line-height:1.5;
    margin:28px 0 12px;color:var(--text)
}
.article-body h4{
    font-size:16px;font-weight:600;margin:20px 0 10px;color:var(--text)
}
.article-body img{
    max-width:100%;border-radius:12px;margin:24px auto;
    box-shadow:var(--shadow-md)
}
.article-body figure{
    margin:24px 0;text-align:center
}
.article-body figure img{
    margin:0 auto 8px
}
.article-body figcaption{
    font-size:13px;color:var(--text-muted);text-align:center
}
.article-body blockquote{
    margin:24px 0;padding:16px 24px;
    border-left:4px solid var(--primary);
    background:var(--primary-soft);
    border-radius:0 var(--radius-md) var(--radius-md) 0;
    color:var(--text-muted);
    font-style:normal;
    line-height:1.7
}
.article-body blockquote p{
    margin-bottom:8px
}
.article-body blockquote p:last-child{
    margin-bottom:0
}
.article-body table{
    width:100%;border-collapse:collapse;
    margin:24px 0;font-size:14px;
    border:none;overflow:hidden;border-radius:var(--radius-md)
}
.article-body table thead th{
    background:var(--primary-soft);color:var(--text);
    font-weight:600;text-align:left;padding:12px 16px;
    border-bottom:2px solid var(--border)
}
.article-body table td{
    padding:12px 16px;border-bottom:1px solid var(--border);
    color:var(--text)
}
.article-body table tr:last-child td{
    border-bottom:none
}
.article-body table tr:hover td{
    background:rgba(47,107,138,0.03)
}
.article-body code{
    background:var(--bg);padding:2px 8px;
    border-radius:4px;font-family:"SF Mono",Consolas,monospace;
    font-size:14px;color:var(--secondary)
}
.article-body pre{
    background:#1E2A32;color:#E6EEF3;
    padding:20px 24px;border-radius:var(--radius-md);
    overflow-x:auto;margin:24px 0;
    font-size:14px;line-height:1.6
}
.article-body pre code{
    background:transparent;padding:0;color:inherit;
    font-family:"SF Mono",Consolas,monospace
}
.article-body ul,.article-body ol{
    margin:20px 0;padding-left:24px
}
.article-body ul li{
    list-style:disc;margin-bottom:8px
}
.article-body ol li{
    list-style:decimal;margin-bottom:8px
}
.article-body a{
    color:var(--primary);
    border-bottom:1px solid rgba(47,107,138,0.3)
}
.article-body a:hover{
    color:var(--accent);
    border-bottom-color:var(--accent)
}
/* Tags */
.article-tags{
    display:flex;align-items:center;flex-wrap:wrap;
    gap:10px;margin-top:36px;padding-top:24px;
    border-top:1px solid var(--border)
}
.tags-label{
    font-size:14px;color:var(--text-muted);font-weight:500
}
.tag-pill{
    display:inline-block;padding:5px 16px;
    border-radius:var(--radius-pill);
    background:var(--bg);border:1px solid var(--border);
    color:var(--text);font-size:13px;transition:all .2s
}
.tag-pill:hover{
    background:var(--accent);color:#fff;border-color:var(--accent)
}
/* Pagination */
.article-pagination{
    display:flex;justify-content:space-between;gap:16px;
    margin-top:28px;
    border-top:1px solid var(--border);
    padding-top:24px
}
.page-btn{
    display:inline-flex;align-items:center;gap:12px;
    background:var(--bg);border:1px solid var(--border);
    border-radius:var(--radius-md);
    padding:14px 20px;min-width:220px;
    transition:all .2s;color:var(--text)
}
.page-btn:hover{
    background:var(--primary-soft);border-color:var(--primary);
    box-shadow:var(--shadow-sm);color:var(--primary)
}
.page-btn.next-btn{
    justify-content:flex-end;text-align:right;margin-left:auto
}
.btn-arrow{
    font-size:18px;color:var(--primary);flex-shrink:0
}
.btn-text{
    display:flex;flex-direction:column;gap:2px;
    min-width:0
}
.btn-text small{
    font-size:12px;color:var(--text-muted)
}
.btn-text strong{
    font-size:14px;font-weight:600;color:var(--text);
    overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:200px
}
.page-btn:hover .btn-text strong{color:var(--primary)}
/* Empty */
.article-empty{
    text-align:center;padding:80px 24px;
    background:var(--surface);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-md);margin-bottom:40px
}
.article-empty .empty-icon{
    font-size:48px;margin-bottom:16px;
    display:block
}
.article-empty h2{
    font-size:24px;font-weight:700;margin-bottom:12px;color:var(--text)
}
.article-empty p{
    color:var(--text-muted);margin-bottom:24px;font-size:15px
}
/* Related */
.related-posts{
    margin-bottom:40px
}
.section-title{
    font-size:26px;font-weight:700;line-height:1.3;
    color:var(--text);margin-bottom:8px;
    display:flex;align-items:center;gap:12px
}
.section-title::before{
    content:'';display:inline-block;width:4px;height:24px;
    background:var(--primary);border-radius:2px
}
.related-grid{
    display:grid;grid-template-columns:repeat(3,1fr);
    gap:24px;margin-top:24px
}
.related-card{
    background:var(--surface);border-radius:var(--radius-lg);
    overflow:hidden;box-shadow:var(--shadow-md);
    transition:all .2s;display:block
}
.related-card:hover{
    box-shadow:var(--shadow-lg);transform:translateY(-2px)
}
.related-image{
    height:152px;overflow:hidden;background:var(--primary-soft)
}
.related-image img{
    width:100%;height:100%;object-fit:cover;transition:transform .3s
}
.related-card:hover .related-image img{
    transform:scale(1.03)
}
.related-card .related-body{
    padding:20px
}
.related-card h3{
    font-size:16px;font-weight:600;line-height:1.4;
    margin-bottom:8px;color:var(--text);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.related-card:hover h3{color:var(--primary)}
.related-date{
    font-size:13px;color:var(--text-muted);display:block;margin-bottom:8px
}
.related-card p{
    font-size:14px;color:var(--text-muted);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
/* CTA */
.article-cta{
    background:var(--primary-soft);
    border-radius:var(--radius-lg);
    padding:40px 48px;
    text-align:center;
    margin-bottom:60px;
    position:relative;
    overflow:hidden
}
.article-cta::before{
    content:'';position:absolute;right:-60px;top:-60px;
    width:200px;height:200px;border-radius:50%;
    background:rgba(47,107,138,0.08)
}
.article-cta::after{
    content:'';position:absolute;left:-40px;bottom:-80px;
    width:160px;height:160px;border-radius:50%;
    background:rgba(77,158,170,0.08)
}
.article-cta h2{
    font-size:24px;font-weight:700;color:var(--text);
    margin-bottom:12px;position:relative;z-index:1
}
.article-cta p{
    color:var(--text-muted);font-size:15px;
    margin-bottom:24px;position:relative;z-index:1
}
.btn{
    display:inline-flex;align-items:center;justify-content:center;
    gap:8px;padding:12px 28px;
    border-radius:var(--radius-md);
    font-size:14px;font-weight:600;
    transition:all .2s;
    line-height:1.4
}
.btn-primary{
    background:var(--primary);color:#fff
}
.btn-primary:hover{
    background:var(--primary-strong);color:#fff;box-shadow:var(--shadow-md);
    transform:translateY(-1px)
}
.btn-primary:active{
    transform:translateY(0)
}
.btn-outline{
    background:transparent;border:1px solid var(--border);
    color:var(--text)
}
.btn-outline:hover{
    background:var(--primary-soft);border-color:var(--primary);color:var(--primary)
}
/* Footer */
.site-footer{
    background:#12222E;
    color:#B8C4CD;
    padding:60px 0 0
}
.footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;
    gap:40px;padding-bottom:40px
}
.footer-brand .logo-text{color:#fff}
.footer-brand p{
    margin-top:16px;font-size:14px;line-height:1.7;
    color:#8FA0AC
}
.footer-col h3{
    color:#fff;font-size:15px;font-weight:600;
    margin-bottom:16px
}
.footer-col ul li{
    margin-bottom:10px
}
.footer-col ul li a{
    color:#B8C4CD;font-size:14px
}
.footer-col ul li a:hover{
    color:var(--accent)
}
.footer-contact li{
    font-size:14px;color:#B8C4CD;
    margin-bottom:10px
}
.subscribe-form{
    display:flex;gap:8px;margin-top:12px
}
.subscribe-form input{
    flex:1;height:40px;border-radius:var(--radius-md);
    border:1px solid rgba(255,255,255,0.15);
    background:rgba(255,255,255,0.06);
    padding:0 14px;font-size:13px;color:#fff;outline:none;
    transition:border-color .2s,box-shadow .2s
}
.subscribe-form input:focus{
    border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(47,107,138,0.25)
}
.subscribe-form input::placeholder{color:#6A7B87}
.subscribe-form .btn{
    padding:0 20px;height:40px;font-size:13px
}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,0.08);
    padding:20px 0
}
.footer-bottom-inner{
    display:flex;align-items:center;justify-content:space-between;
    flex-wrap:wrap;gap:8px;font-size:13px;color:#6A7B87
}
.footer-links{display:flex;gap:20px}
.footer-links a{color:#6A7B87}
.footer-links a:hover{color:var(--accent)}
/* Mobile drawer */
.mobile-nav-overlay{
    display:none
}
/* Responsive */
@media (max-width:1024px){
    .footer-grid{
        grid-template-columns:1fr 1fr
    }
    .topbar-right .search-box{
        width:180px
    }
}
@media (max-width:768px){
    .container{
        padding-left:16px;padding-right:16px
    }
    .topbar{
        height:52px
    }
    .topbar-inner{
        height:52px
    }
    .topbar-right{
        display:none
    }
    .menu-toggle{
        display:flex
    }
    .header-nav{
        display:none;
        position:fixed;
        top:52px;left:0;right:0;bottom:0;
        background:var(--surface);
        z-index:999;
        overflow-y:auto;
        padding:16px
    }
    .header-nav.open{
        display:block
    }
    .nav-inner{
        flex-direction:column;align-items:stretch;
        height:auto;gap:0
    }
    .nav-link{
        height:48px;border-bottom:1px solid var(--border);
        justify-content:flex-start;padding:0 12px
    }
    .nav-link.active{
        border-bottom:1px solid var(--border);
        background:var(--primary-soft)
    }
    .nav-cta{
        margin:16px 0 0;justify-content:center
    }
    .article-wrap{
        padding:24px 16px
    }
    .article-header h1{
        font-size:26px
    }
    .main-wrapper{
        padding-top:24px
    }
    .related-grid{
        grid-template-columns:1fr
    }
    .article-pagination{
        flex-direction:column
    }
    .page-btn{
        width:100%
    }
    .page-btn.next-btn{
        margin-left:0
    }
    .footer-grid{
        grid-template-columns:1fr;gap:32px
    }
    .article-cta{
        padding:28px 20px
    }
    .article-body{
        font-size:15px
    }
    .article-body h2{
        font-size:20px
    }
    .article-body h3{
        font-size:16px
    }
}
@media (max-width:520px){
    .breadcrumb{
        font-size:12px
    }
    .article-header h1{
        font-size:22px
    }
    .article-meta{
        gap:8px
    }
    .btn{
        padding:10px 20px;font-size:13px
    }
}

/* roulang page: category3 */
:root {
  --primary: #2F6B8A;
  --primary-strong: #1D4C67;
  --primary-soft: #E6EEF3;
  --secondary: #4E9EAA;
  --accent: #D58A43;
  --bg: #F6F8FB;
  --surface: #FFFFFF;
  --text: #1E2A32;
  --text-muted: #5A6B78;
  --border: rgba(47,107,138,0.12);
  --shadow-sm: 0 1px 2px rgba(30,42,50,0.06);
  --shadow-md: 0 4px 12px rgba(30,42,50,0.08);
  --shadow-lg: 0 12px 30px rgba(30,42,50,0.12);
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --font-sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-num: "Inter", "Arial Narrow", sans-serif;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--primary-strong);
  text-decoration: underline;
}
ul, ol {
  list-style: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1.2;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-strong);
  border-color: var(--primary-strong);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-md);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-outline:hover {
  background: var(--primary-soft);
  color: var(--primary-strong);
  text-decoration: none;
  border-color: rgba(47,107,138,0.3);
}
.btn-outline:active {
  transform: translateY(1px);
}
.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-accent:hover {
  background: #C67A34;
  border-color: #C67A34;
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-md);
}
.text-muted {
  color: var(--text-muted);
}
.section {
  padding-top: 80px;
  padding-bottom: 80px;
}
.section-title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}
.section-bar {
  width: 40px;
  height: 4px;
  background: var(--primary);
  border-radius: 4px;
  margin-bottom: 24px;
}
.section-header-center {
  text-align: center;
}
.section-header-center .section-bar {
  margin-left: auto;
  margin-right: auto;
}
@media (max-width: 767px) {
  .section {
    padding-top: 48px;
    padding-bottom: 48px;
  }
  .section-title {
    font-size: 20px;
  }
}
/* ===== Header & Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.header-top {
  height: 40px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.5px;
}
.logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.3px;
}
.logo:hover {
  text-decoration: none;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border-radius: var(--radius-pill);
  padding: 0 14px;
  height: 30px;
  width: 224px;
  border: 1px solid var(--border);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47,107,138,0.12);
}
.search-box svg {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  margin-right: 6px;
  flex-shrink: 0;
}
.search-box input {
  border: none;
  outline: none;
  background: transparent;
  font-size: 13px;
  width: 100%;
  color: var(--text);
  font-family: var(--font-sans);
}
.search-box input::placeholder {
  color: #9AA7B0;
}
.header-tags {
  display: flex;
  gap: 6px;
}
.header-tags a {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--primary-soft);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
}
.header-tags a:hover {
  color: var(--accent);
  text-decoration: none;
}
.header-nav {
  background: var(--surface);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 56px;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 16px;
  border-radius: 8px;
  position: relative;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--primary-strong);
  background: var(--primary-soft);
  text-decoration: none;
}
.nav-link.active {
  color: var(--primary-strong);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: -2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-cta {
  margin-left: auto;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  white-space: nowrap;
}
.nav-cta:hover {
  background: var(--primary-strong);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  gap: 4px;
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.2s ease;
}
@media (max-width: 767px) {
  .header-top {
    height: 56px;
  }
  .header-top-inner {
    gap: 8px;
  }
  .search-box {
    width: auto;
    flex: 1;
    max-width: 200px;
  }
  .header-tags {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .header-nav.open {
    display: block;
  }
  .header-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--surface);
    box-shadow: var(--shadow-md);
    z-index: 200;
  }
  .nav-inner {
    flex-direction: column;
    height: auto;
    padding: 16px 24px;
    align-items: stretch;
    gap: 4px;
  }
  .nav-link {
    padding: 12px 16px;
    border-radius: 8px;
  }
  .nav-link.active::after {
    display: none;
  }
  .nav-link.active {
    background: var(--primary-soft);
  }
  .nav-cta {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
  }
}
/* ===== Category Hero ===== */
.category-hero {
  background: linear-gradient(135deg, var(--primary-soft) 0%, #f7fafc 60%, var(--surface) 100%);
  padding: 56px 0 48px;
  position: relative;
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(78,158,170,0.14);
}
.category-hero::after {
  content: "";
  position: absolute;
  bottom: -40px;
  left: 20%;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(213,138,67,0.08);
}
.category-hero .container {
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}
.category-hero h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 12px;
}
.category-hero .hero-sub {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 640px;
  line-height: 1.7;
}
@media (max-width: 767px) {
  .category-hero {
    padding: 40px 0 32px;
  }
  .category-hero h1 {
    font-size: 26px;
  }
}
/* ===== Stats Bar ===== */
.stats-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item {
  text-align: center;
  position: relative;
}
.stat-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -16px;
  top: 10%;
  height: 80%;
  width: 1px;
  background: var(--border);
}
.stat-num {
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}
@media (max-width: 767px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 16px;
  }
  .stat-item:nth-child(2)::after {
    display: none;
  }
  .stat-num {
    font-size: 24px;
  }
}
/* ===== Case Section ===== */
.case-section {
  padding-top: 64px;
  padding-bottom: 64px;
}
.case-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  margin-top: 32px;
}
.case-main {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.case-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all 0.2s ease;
  border: 1px solid var(--border);
  display: flex;
}
.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.case-cover {
  width: 240px;
  flex-shrink: 0;
  min-height: 180px;
  background: var(--primary-soft);
  position: relative;
}
.case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}
.case-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  background: var(--primary-soft);
  color: var(--primary-strong);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
}
.case-date {
  font-size: 13px;
  color: var(--text-muted);
}
.case-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}
.case-body h3 a {
  color: var(--text);
}
.case-body h3 a:hover {
  color: var(--primary);
  text-decoration: none;
}
.case-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.case-result {
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}
.case-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-top: auto;
  transition: all 0.2s ease;
}
.case-link:hover {
  color: var(--primary-strong);
  text-decoration: none;
}
.case-link svg {
  width: 14px;
  height: 14px;
  margin-left: 4px;
  display: inline-block;
  vertical-align: -2px;
  transition: transform 0.2s ease;
}
.case-link:hover svg {
  transform: translateX(3px);
}
/* Sidebar */
.case-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.side-widget {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  padding: 24px;
}
.side-widget h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.side-widget h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 32px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.side-list li {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(47,107,138,0.06);
  font-size: 14px;
}
.side-list li:last-child {
  border-bottom: none;
}
.side-list a {
  color: var(--text);
  line-height: 1.5;
  flex: 1;
}
.side-list a:hover {
  color: var(--primary);
  text-decoration: none;
}
.side-list .side-date {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  margin-top: 2px;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-cloud a {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--primary-soft);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
}
.tag-cloud a:hover {
  color: var(--accent);
  background: rgba(213,138,67,0.1);
  text-decoration: none;
}
.side-cta {
  background: var(--primary-soft);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
}
.side-cta h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.side-cta p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}
@media (max-width: 991px) {
  .case-layout {
    grid-template-columns: 1fr;
  }
  .case-sidebar {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .side-widget {
    flex: 1;
    min-width: 240px;
  }
}
@media (max-width: 767px) {
  .case-card {
    flex-direction: column;
  }
  .case-cover {
    width: 100%;
    height: 160px;
  }
  .case-sidebar {
    flex-direction: column;
  }
}
/* ===== Process Section ===== */
.process-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.process-item {
  text-align: left;
  padding: 24px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  position: relative;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}
.process-item:hover {
  border-color: var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}
.process-num {
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
  display: block;
}
.process-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.process-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}
@media (max-width: 991px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 767px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
}
/* ===== Value Section ===== */
.value-section {
  background: var(--bg);
}
.value-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 32px;
}
.value-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  height: 320px;
}
.value-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.value-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
}
.value-content p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.value-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.value-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  line-height: 1.6;
}
.value-list .check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(78,158,170,0.15);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}
@media (max-width: 767px) {
  .value-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .value-image {
    height: 220px;
  }
}
/* ===== FAQ ===== */
.faq-section {
  background: var(--surface);
}
.faq-wrap {
  max-width: 760px;
  margin: 32px auto 0;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}
.faq-item {
  border-bottom: 1px solid var(--border);
  transition: background 0.2s ease;
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-item.active {
  background: rgba(230,238,243,0.3);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color 0.2s ease;
  position: relative;
}
.faq-question::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--primary);
  border-radius: 0 4px 4px 0;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.faq-item.active .faq-question::before {
  opacity: 1;
}
.faq-item.active .faq-question {
  color: var(--primary);
}
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1.5px solid var(--primary);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 400;
  flex-shrink: 0;
  transition: all 0.2s ease;
  line-height: 1;
}
.faq-item.active .faq-icon {
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}
.faq-item.active .faq-answer {
  display: block;
}
@media (max-width: 767px) {
  .faq-question {
    padding: 16px;
    font-size: 15px;
  }
  .faq-answer {
    padding: 0 16px 16px;
  }
}
/* ===== CTA ===== */
.cta-banner {
  background: var(--primary-soft);
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  border: 30px solid rgba(47,107,138,0.06);
  border-radius: 50%;
  right: -50px;
  bottom: -50px;
}
.cta-banner::after {
  content: "";
  position: absolute;
  width: 100px;
  height: 100px;
  border: 20px solid rgba(213,138,67,0.08);
  border-radius: 50%;
  left: 8%;
  top: -30px;
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px;
}
.cta-inner h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.cta-inner p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}
.cta-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
@media (max-width: 767px) {
  .cta-banner {
    padding: 48px 0;
  }
  .cta-inner h2 {
    font-size: 20px;
  }
}
/* ===== Footer ===== */
.site-footer {
  background: #12222E;
  color: #B8C4CD;
  padding-top: 56px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.site-footer .logo-text {
  color: #fff;
}
.site-footer .logo-mark {
  background: var(--primary);
  color: #fff;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #9FB0BC;
  margin-top: 16px;
  max-width: 280px;
}
.site-footer h3 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.site-footer .footer-col ul li {
  margin-bottom: 10px;
}
.site-footer .footer-col ul li a {
  font-size: 14px;
  color: #B8C4CD;
  transition: color 0.2s ease;
}
.site-footer .footer-col ul li a:hover {
  color: #fff;
  text-decoration: none;
}
.footer-contact li {
  font-size: 14px;
  line-height: 1.8;
  color: #B8C4CD;
}
.footer-col .subscribe-form {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
.subscribe-form input {
  flex: 1;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  padding: 0 14px;
  background: rgba(255,255,255,0.06);
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: all 0.2s ease;
  font-family: var(--font-sans);
}
.subscribe-form input::placeholder {
  color: #7A8C99;
}
.subscribe-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47,107,138,0.2);
  background: rgba(255,255,255,0.1);
}
.subscribe-form .btn {
  padding: 0 20px;
  height: 40px;
  font-size: 14px;
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: #7A8C99;
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 13px;
  color: #7A8C99;
}
.footer-links a:hover {
  color: #fff;
  text-decoration: none;
}
@media (max-width: 991px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 767px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }
}
/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* roulang page: category4 */
:root{
  --primary:#2F6B8A;
  --primary-strong:#1D4C67;
  --primary-soft:#E6EEF3;
  --secondary:#4E9EAA;
  --accent:#D58A43;
  --bg:#F6F8FB;
  --surface:#FFFFFF;
  --text:#1E2A32;
  --text-muted:#5A6B78;
  --border:rgba(47,107,138,0.12);
  --shadow-sm:0 1px 2px rgba(30,42,50,0.06);
  --shadow-md:0 4px 12px rgba(30,42,50,0.08);
  --shadow-lg:0 12px 30px rgba(30,42,50,0.12);
  --radius-md:8px;
  --radius-lg:16px;
  --radius-pill:999px;
  --container:1200px;
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:80px;
  --font-cn:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Arial Narrow",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-cn);font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-strong);}
img{max-width:100%;height:auto;display:block;}
ul,ol{list-style:none;}
button,input{font-family:inherit;font-size:inherit;border:none;outline:none;background:none;}
button{cursor:pointer;}

.container{max-width:var(--container);margin:0 auto;padding-left:var(--space-3);padding-right:var(--space-3);}

.site-header{position:sticky;top:0;z-index:200;background:var(--surface);box-shadow:var(--shadow-sm);transition:box-shadow .2s ease;}
.site-header.scrolled{box-shadow:var(--shadow-md);}
.header-top{border-bottom:1px solid var(--border);height:48px;display:flex;align-items:center;background:var(--surface);transition:height .2s ease;}
.site-header.scrolled .header-top{height:0;overflow:hidden;border-bottom:none;}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);width:100%;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;background:var(--primary);color:#fff;font-family:var(--font-num);font-weight:800;font-size:15px;border-radius:var(--radius-md);letter-spacing:.5px;}
.logo-text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.3px;}
.header-actions{display:flex;align-items:center;gap:var(--space-2);}
.header-search{display:flex;align-items:center;width:224px;height:34px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-pill);padding:0 12px;gap:8px;}
.header-search input{flex:1;background:transparent;font-size:13px;color:var(--text);}
.header-search input::placeholder{color:var(--text-muted);}
.header-search button{color:var(--primary);font-size:15px;line-height:1;display:flex;align-items:center;}
.header-hot{display:flex;align-items:center;gap:8px;}
.hot-tag{font-size:12px;color:var(--text-muted);background:var(--primary-soft);padding:4px 12px;border-radius:var(--radius-pill);transition:all .2s ease;font-weight:500;}
.hot-tag:hover{background:var(--accent);color:#fff;}
.nav-toggle{display:none;flex-direction:column;gap:4px;width:34px;height:34px;align-items:center;justify-content:center;border-radius:var(--radius-md);}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:all .25s ease;}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.header-nav{background:var(--surface);border-bottom:1px solid var(--border);}
.nav-inner{display:flex;align-items:center;gap:var(--space-2);height:56px;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:18px 16px;display:inline-flex;align-items:center;transition:color .2s ease,background .2s ease;}
.nav-link::after{content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:2px;background:transparent;border-radius:2px 2px 0 0;transition:background .2s ease;}
.nav-link:hover{background:var(--primary-soft);color:var(--primary-strong);}
.nav-link.active{color:var(--primary-strong);font-weight:600;}
.nav-link.active::after{background:var(--primary);}
.nav-cta{background:var(--primary);color:#fff;font-size:14px;font-weight:600;padding:8px 20px;border-radius:var(--radius-pill);transition:all .2s ease;flex-shrink:0;margin-left:auto;}
.nav-cta:hover{background:var(--primary-strong);color:#fff;box-shadow:var(--shadow-md);transform:translateY(-1px);}

.category-hero{background:linear-gradient(to right,var(--primary-soft) 0%,#F6F8FB 60%,#FFFFFF 100%);padding:64px 0 56px;border-bottom:1px solid var(--border);}
.category-hero-inner{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:var(--space-5);align-items:center;}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:var(--primary);color:#fff;font-size:13px;font-weight:600;padding:5px 14px;border-radius:var(--radius-pill);letter-spacing:.5px;margin-bottom:20px;}
.category-hero h1{font-size:34px;font-weight:700;line-height:1.2;color:var(--text);margin-bottom:12px;}
.hero-sub{font-size:16px;color:var(--text-muted);max-width:520px;line-height:1.6;}
.hero-stats{display:flex;gap:0;margin-top:32px;border-top:1px solid var(--border);padding-top:24px;}
.stat-item{flex:1;padding-right:24px;}
.stat-item + .stat-item{border-left:1px solid var(--border);padding-left:24px;}
.stat-item strong{display:block;font-family:var(--font-num);font-size:28px;font-weight:800;color:var(--primary-strong);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat-item span{font-size:13px;color:var(--text-muted);}
.category-hero-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);background:var(--primary-soft);}
.category-hero-media img{width:100%;height:280px;object-fit:cover;}

.page-main{padding:64px 0 80px;}
.content-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:var(--space-4);align-items:start;}

.section-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--primary);background:var(--primary-soft);padding:4px 12px;border-radius:var(--radius-pill);margin-bottom:12px;letter-spacing:1px;}
.section-title{font-size:26px;font-weight:700;color:var(--text);line-height:1.3;margin-bottom:16px;}
.section-divider{width:40px;height:4px;background:var(--primary);border-radius:2px;margin-bottom:24px;}
.section-desc{font-size:15px;color:var(--text-muted);margin-bottom:32px;max-width:600px;line-height:1.7;}

.news-cards{display:flex;flex-direction:column;gap:var(--space-2);}
.news-card{display:flex;gap:var(--space-2);background:var(--surface);border-radius:var(--radius-lg);padding:16px;box-shadow:var(--shadow-md);border:1px solid var(--border);transition:all .2s ease;align-items:stretch;}
.news-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:rgba(47,107,138,0.28);}
.news-card-media{flex:0 0 176px;border-radius:var(--radius-md);overflow:hidden;background:var(--primary-soft);}
.news-card-media img{width:100%;height:100%;object-fit:cover;min-height:130px;}
.news-card-body{flex:1;display:flex;flex-direction:column;justify-content:center;padding:4px 8px 4px 0;}
.news-card-meta{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.news-card-tag{background:var(--primary-soft);color:var(--primary-strong);font-size:12px;font-weight:600;padding:3px 10px;border-radius:var(--radius-pill);}
.news-card-date{font-size:12px;color:var(--text-muted);margin-left:auto;}
.news-card-title{font-size:16px;font-weight:600;color:var(--text);line-height:1.4;margin-bottom:6px;transition:color .2s ease;}
.news-card-title:hover{color:var(--primary);}
.news-card-summary{font-size:14px;color:var(--text-muted);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px;}
.news-card-link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:4px;transition:gap .2s ease;}
.news-card-link:hover{gap:8px;color:var(--primary-strong);}

.sidebar{display:flex;flex-direction:column;gap:var(--space-3);position:sticky;top:88px;}
.sidebar-card{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--border);padding:24px;}
.sidebar-card h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--primary-soft);position:relative;}
.sidebar-card h3::after{content:"";position:absolute;left:0;bottom:-2px;width:40px;height:2px;background:var(--primary);}
.hot-list li{margin-bottom:4px;border-bottom:1px dashed var(--border);}
.hot-list li:last-child{margin-bottom:0;border-bottom:none;}
.hot-list a{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:10px 0;font-size:14px;color:var(--text);transition:color .2s ease;}
.hot-list a:hover{color:var(--primary);}
.hot-list a span{font-size:12px;color:var(--text-muted);flex-shrink:0;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-cloud a{font-size:13px;color:var(--text-muted);background:var(--primary-soft);padding:6px 14px;border-radius:var(--radius-pill);transition:all .2s ease;}
.tag-cloud a:hover{background:var(--accent);color:#fff;transform:translateY(-1px);}
.sidebar-cta{background:var(--primary-strong);color:#fff;border:none;padding:24px;text-align:left;}
.sidebar-cta h3{border:none;color:#fff;}
.sidebar-cta h3::after{display:none;}
.sidebar-cta p{font-size:14px;color:#B8C4CD;line-height:1.6;margin-bottom:20px;}
.sidebar-cta .btn{border-radius:var(--radius-pill);padding:10px 20px;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:#fff;transition:all .2s ease;}
.sidebar-cta .btn:hover{background:#C6782E;color:#fff;box-shadow:var(--shadow-md);transform:translateY(-1px);}

.features-section{padding:80px 0;background:var(--surface);}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3);}
.feature-card{background:var(--bg);border-radius:var(--radius-lg);padding:28px 24px;border-top:4px solid var(--primary);box-shadow:var(--shadow-sm);transition:all .2s ease;}
.feature-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);}
.feature-icon{width:48px;height:48px;background:var(--primary-soft);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px;color:var(--primary);}
.feature-card h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:8px;}
.feature-card p{font-size:14px;color:var(--text-muted);line-height:1.6;}

.steps-section{padding:80px 0;}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3);}
.step-card{background:var(--surface);border-radius:var(--radius-lg);padding:28px 24px;box-shadow:var(--shadow-md);border:1px solid var(--border);position:relative;transition:all .2s ease;}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.step-num{font-family:var(--font-num);font-size:40px;font-weight:800;color:var(--primary-soft);line-height:1;margin-bottom:14px;}
.step-card h3{font-size:16px;font-weight:700;color:var(--text);margin-bottom:8px;}
.step-card p{font-size:14px;color:var(--text-muted);line-height:1.6;}

.data-section{background:#12222E;padding:56px 0;color:#fff;}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3);text-align:center;}
.data-item strong{display:block;font-family:var(--font-num);font-size:34px;font-weight:800;color:#fff;line-height:1.2;font-variant-numeric:tabular-nums;margin-bottom:6px;}
.data-item span{font-size:14px;color:#B8C4CD;}

.faq-section{padding:80px 0;}
.faq-wrap{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--border);padding:24px 32px;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:none;}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;font-size:16px;font-weight:600;color:var(--text);text-align:left;transition:color .2s ease;}
.faq-question:hover{color:var(--primary);}
.faq-icon{width:26px;height:26px;border:2px solid var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--primary);flex-shrink:0;transition:all .25s ease;line-height:1;font-family:var(--font-num);}
.faq-item.open .faq-question{color:var(--primary);}
.faq-item.open .faq-icon{background:var(--primary);color:#fff;transform:rotate(45deg);}
.faq-answer{display:none;padding:0 32px 20px 0;font-size:15px;color:var(--text-muted);line-height:1.65;}
.faq-item.open .faq-answer{display:block;animation:faqIn .3s ease;}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

.cta-section{background:var(--primary-soft);padding:64px 0;text-align:center;}
.cta-section h2{font-size:26px;font-weight:700;color:var(--text);margin-bottom:12px;}
.cta-section p{font-size:16px;color:var(--text-muted);max-width:560px;margin:0 auto 32px;line-height:1.6;}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;padding:12px 24px;border-radius:var(--radius-md);transition:all .2s ease;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-strong);color:#fff;box-shadow:var(--shadow-md);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border);}
.btn-outline:hover{background:var(--primary-soft);color:var(--primary-strong);}
.btn-lg{padding:14px 32px;font-size:16px;}

.site-footer{background:#12222E;color:#B8C4CD;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:var(--space-4);padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08);}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.7;color:#B8C4CD;max-width:300px;}
.footer-col h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:14px;color:#B8C4CD;transition:color .2s ease;}
.footer-col ul a:hover{color:#fff;}
.footer-contact li{font-size:14px;color:#B8C4CD;margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.footer-col p{font-size:14px;line-height:1.6;margin-bottom:16px;}
.subscribe-form{display:flex;gap:8px;flex-wrap:wrap;}
.subscribe-form input{flex:1;min-width:160px;height:44px;background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.15);border-radius:var(--radius-md);padding:0 14px;color:#fff;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease;}
.subscribe-form input::placeholder{color:#8A9BA8;}
.subscribe-form input:focus{border-color:var(--secondary);box-shadow:0 0 0 3px rgba(78,158,170,0.2);}
.footer-bottom{padding:20px 0;}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:#8A9BA8;flex-wrap:wrap;gap:12px;}
.footer-links{display:flex;gap:20px;}
.footer-links a{color:#8A9BA8;font-size:13px;transition:color .2s ease;}
.footer-links a:hover{color:#fff;}

@media (max-width:1199px){
  .features-grid{grid-template-columns:repeat(2,1fr);}
  .steps-grid{grid-template-columns:repeat(2,1fr);}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .content-grid{grid-template-columns:1fr;}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap;}
  .sidebar-card{flex:1 1 calc(50% - 16px);}
  .sidebar-card.sidebar-cta{flex:1 1 100%;}
  .category-hero-inner{gap:32px;}
}

@media (max-width:767px){
  .header-top{height:52px;}
  .site-header.scrolled .header-top{height:0;}
  .container{padding-left:16px;padding-right:16px;}
  .header-search{display:none;}
  .header-hot{display:none;}
  .nav-toggle{display:flex;}
  .header-nav{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--surface);z-index:-1;border:none;opacity:0;visibility:hidden;transition:all .3s ease;padding-top:80px;}
  .header-nav.open{opacity:1;visibility:visible;z-index:180;}
  .nav-inner{flex-direction:column;align-items:flex-start;height:auto;padding:24px 24px;gap:0;}
  .nav-inner .nav-link{width:100%;padding:16px 0;font-size:18px;border-bottom:1px solid var(--border);}
  .nav-link::after{display:none;}
  .nav-cta{margin-left:0;margin-top:20px;width:100%;text-align:center;justify-content:center;}
  .header-top-inner{position:relative;z-index:190;}
  .category-hero{padding:48px 0 40px;}
  .category-hero-inner{grid-template-columns:1fr;gap:24px;}
  .category-hero h1{font-size:26px;}
  .hero-sub{font-size:15px;}
  .hero-stats{margin-top:24px;padding-top:16px;flex-direction:column;gap:16px;}
  .stat-item{border-left:none !important;padding-left:0 !important;padding-right:0;}
  .category-hero-media img{height:200px;}
  .page-main{padding:48px 0 56px;}
  .section-title{font-size:20px;}
  .section-desc{font-size:14px;}
  .features-section,.steps-section,.faq-section{padding:48px 0;}
  .features-grid,.steps-grid{grid-template-columns:1fr;}
  .data-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .data-item strong{font-size:26px;}
  .news-card{flex-direction:column;padding:16px;}
  .news-card-media{flex:0 0 auto;width:100%;border-radius:var(--radius-md);}
  .news-card-media img{height:140px;min-height:0;}
  .news-card-title{font-size:15px;}
  .sidebar{flex-direction:column;}
  .sidebar-card{flex:1 1 100%;}
  .sidebar-card.sidebar-cta{flex:1 1 100%;}
  .faq-wrap{padding:16px 20px;}
  .faq-question{font-size:15px;padding:16px 0;}
  .cta-section{padding:48px 0;}
  .cta-section h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom-inner{flex-direction:column;text-align:center;justify-content:center;}
}

@media (max-width:520px){
  .data-grid{grid-template-columns:1fr;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  .features-grid{grid-template-columns:1fr;}
  .steps-grid{grid-template-columns:1fr;}
  .stat-item strong{font-size:24px;}
  .news-card-summary{-webkit-line-clamp:3;}
}

/* roulang page: category2 */
:root {
  --primary: #2F6B8A;
  --primary-strong: #1D4C67;
  --primary-soft: #E6EEF3;
  --secondary: #4E9EAA;
  --accent: #D58A43;
  --bg: #F6F8FB;
  --surface: #FFFFFF;
  --text: #1E2A32;
  --text-muted: #5A6B78;
  --border: rgba(47,107,138,0.12);
  --shadow-sm: 0 1px 2px rgba(30,42,50,0.06);
  --shadow-md: 0 4px 12px rgba(30,42,50,0.08);
  --shadow-lg: 0 12px 30px rgba(30,42,50,0.12);
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-pill: 999px;
  --font-sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-num: "Inter", "Arial Narrow", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { display: block; max-width: 100%; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--primary-strong); text-decoration: underline; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 16px; }

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--primary-strong);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(1px);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover {
  background: var(--primary-soft);
  color: var(--primary-strong);
  text-decoration: none;
}
.btn-block { width: 100%; }

/* ===== 标签 / 徽章 ===== */
.badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: var(--primary-soft);
  color: var(--primary-strong);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
}
.badge-accent {
  background: rgba(213,138,67,0.14);
  color: #B06E2C;
}
.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: var(--primary-soft);
  color: var(--primary-strong);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  transition: all 0.2s ease;
}
.tag:hover {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}

/* ===== 板块标题 ===== */
.section-title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 16px;
  position: relative;
}
.section-title::after {
  content: "";
  display: block;
  width: 40px;
  height: 4px;
  border-radius: 2px;
  background: var(--primary);
  margin-top: 10px;
}
.section-header {
  margin-bottom: 32px;
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 6px;
  max-width: 640px;
}

/* ===== Header ===== */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.header-top {
  height: 40px;
  border-bottom: 1px solid var(--border);
  transition: height 0.2s ease;
  overflow: hidden;
}
.site-header.scrolled .header-top {
  height: 0;
  border-bottom-color: transparent;
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 40px;
  gap: 16px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}
.logo:hover { text-decoration: none; }
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.2px;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 224px;
  height: 30px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 0 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47,107,138,0.15);
}
.header-search svg {
  width: 14px;
  height: 14px;
  stroke: var(--text-muted);
  flex-shrink: 0;
}
.header-search input {
  border: none;
  outline: none;
  background: transparent;
  width: 100%;
  font-size: 13px;
  color: var(--text);
}
.header-search input::placeholder {
  color: var(--text-muted);
}
.header-hot {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}
.hot-label {
  color: var(--text-muted);
  font-weight: 500;
  margin-right: 2px;
}
.hot-tag {
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  background: var(--primary-soft);
  color: var(--primary-strong);
  font-size: 12px;
  transition: background 0.2s ease, color 0.2s ease;
}
.hot-tag:hover {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
}
.nav-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  align-items: center;
  justify-content: center;
  color: var(--primary-strong);
}
.nav-toggle svg { width: 18px; height: 18px; }
.nav-toggle:hover { background: var(--primary-soft); }

.header-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  box-shadow: none;
  transition: box-shadow 0.2s ease;
}
.site-header.scrolled .header-nav {
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 56px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  height: 56px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, background 0.2s ease;
}
.nav-link:hover {
  color: var(--primary-strong);
  background: var(--primary-soft);
  text-decoration: none;
  border-bottom-color: transparent;
}
.nav-link.active {
  color: var(--primary-strong);
  font-weight: 600;
  border-bottom-color: var(--primary);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 20px;
  margin-left: auto;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
}
.nav-cta:hover {
  background: var(--primary-strong);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* ===== 页面头部（分类Hero） ===== */
.page-hero {
  background: linear-gradient(90deg, var(--primary-soft) 0%, rgba(255,255,255,0.7) 100%);
  position: relative;
  padding: 56px 0 48px;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
}
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }
.page-hero h1 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 12px;
}
.page-hero .lead {
  max-width: 620px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== 主内容布局 ===== */
.page-main {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  padding: 48px 24px;
}
.main-col, .side-col { min-width: 0; }

/* ===== 主栏板块 ===== */
.section-block { margin-bottom: 48px; }

/* 方案思路 */
.intro-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 48px;
}
.intro-panel p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}
.feature-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 12px;
}
.feature-point {
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--bg);
  border-left: 3px solid var(--primary);
}
.feature-point h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.feature-point p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* 解决方案卡片 */
.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.solution-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}
.solution-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.solution-card .card-img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  background: var(--primary-soft);
}
.solution-card-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.solution-card-body .badge { align-self: flex-start; margin-bottom: 12px; }
.solution-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text);
}
.solution-card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}
.card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}
.card-link:hover { gap: 8px; text-decoration: none; color: var(--primary-strong); }

/* 实施流程 */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.process-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.process-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.process-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-num);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}
.process-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.process-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 适用场景 */
.scenario-list { display: flex; flex-direction: column; gap: 20px; }
.scenario-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  align-items: stretch;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.scenario-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.scenario-item img {
  width: 220px;
  flex-shrink: 0;
  object-fit: cover;
  background: var(--primary-soft);
}
.scenario-text {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.scenario-text h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.scenario-text p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}
.scenario-tags { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===== 侧栏 ===== */
.side-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.side-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.side-cta {
  background: var(--primary);
  border-color: var(--primary);
  text-align: center;
  color: #fff;
}
.side-cta h3 {
  color: #fff;
  border-bottom-color: rgba(255,255,255,0.2);
}
.side-cta p {
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
  margin-bottom: 20px;
}
.side-cta .btn-primary {
  background: #fff;
  color: var(--primary-strong);
}
.side-cta .btn-primary:hover {
  background: var(--accent);
  color: #fff;
}
.side-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
}
.side-list li:last-child { border-bottom: none; }
.side-list .list-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--secondary);
  flex-shrink: 0;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--surface);
  padding: 64px 0;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}
.faq-item:last-child { margin-bottom: 0; }
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-item.active { box-shadow: var(--shadow-md); border-color: rgba(47,107,138,0.3); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 24px;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color 0.2s ease;
}
.faq-item.active .faq-question {
  color: var(--primary);
}
.faq-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 14px;
  flex-shrink: 0;
  transition: all 0.2s ease;
}
.faq-item.active .faq-icon {
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  display: none;
}
.faq-item.active .faq-answer { display: block; }

/* ===== CTA横幅 ===== */
.cta-banner {
  background: var(--primary-soft) url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  padding: 64px 0;
  text-align: center;
  position: relative;
}
.cta-banner::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(255,255,255,0.72);
}
.cta-banner .container { position: relative; z-index: 1; }
.cta-banner h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.cta-banner p {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 28px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #12222E;
  color: #B8C4CD;
  padding: 56px 0 0;
  font-size: 14px;
}
.site-footer a { color: #B8C4CD; }
.site-footer a:hover { color: #fff; text-decoration: none; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr 1.4fr;
  gap: 32px;
  padding-bottom: 40px;
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand .logo-text { color: #fff; }
.footer-brand .logo-mark { background: var(--primary); }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #B8C4CD;
  max-width: 320px;
}
.footer-col h3 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: #B8C4CD;
  transition: color 0.2s ease;
}
.footer-col ul li a:hover { color: #fff; text-decoration: underline; }
.footer-contact li {
  font-size: 14px;
  color: #B8C4CD;
  margin-bottom: 10px;
}
.footer-col p {
  font-size: 14px;
  line-height: 1.7;
  color: #B8C4CD;
  margin-bottom: 14px;
}
.subscribe-form {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.subscribe-form input {
  flex: 1;
  height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.subscribe-form input::placeholder { color: rgba(255,255,255,0.5); }
.subscribe-form input:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(78,158,170,0.2);
}
.subscribe-form .btn {
  height: 44px;
  padding: 0 20px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  border: none;
  transition: all 0.2s ease;
}
.subscribe-form .btn:hover { background: var(--primary-strong); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #8EA0AC;
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 13px;
  color: #8EA0AC;
}
.footer-links a:hover { color: #fff; }

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .container { padding-left: 20px; padding-right: 20px; }
}

@media (max-width: 991px) {
  .feature-points { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .page-main { grid-template-columns: 1fr; }
  .scenario-item img { width: 180px; }
}

@media (max-width: 767px) {
  .header-top { height: 56px; }
  .header-top-inner { height: 56px; }
  .header-search, .header-hot { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 200;
  }
  .header-nav.open { transform: translateX(0); }
  .nav-inner {
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    height: auto;
    gap: 0;
  }
  .nav-link, .nav-link.active {
    display: block;
    height: auto;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    border-left: 2px solid transparent;
    font-size: 15px;
  }
  .nav-link.active {
    border-left-color: var(--primary);
    border-bottom-color: var(--border);
    background: var(--primary-soft);
  }
  .nav-cta { margin: 16px 0 0; justify-content: center; }

  .page-hero {
    padding: 40px 0;
    background: linear-gradient(135deg, var(--primary-soft) 0%, rgba(255,255,255,0.8) 100%);
  }
  .page-hero h1 { font-size: 26px; }
  .page-hero .lead { font-size: 14px; }
  .hero-actions .btn { width: 100%; }

  .page-main { padding: 32px 16px; gap: 24px; }
  .section-block { margin-bottom: 32px; }
  .section-title { font-size: 20px; }
  .intro-panel { padding: 20px; }
  .solution-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; gap: 16px; }
  .scenario-item { flex-direction: column; }
  .scenario-item img { width: 100%; height: 180px; }
  .scenario-text { padding: 20px; }

  .faq-section { padding: 40px 0; }
  .faq-question { font-size: 15px; padding: 16px 20px; }
  .faq-answer { padding: 0 20px 16px; font-size: 14px; }

  .cta-banner { padding: 40px 0; }
  .cta-banner h2 { font-size: 20px; }
  .cta-actions .btn { width: 100%; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 24px;
  }
  .footer-bottom-inner { flex-direction: column; }
  .subscribe-form { flex-direction: column; }
  .subscribe-form .btn { width: 100%; }
}

@media (min-width: 768px) and (max-width: 1024px) {
  .container { padding-left: 24px; padding-right: 24px; }
  .solution-grid { grid-template-columns: 1fr 1fr; }
  .feature-points { grid-template-columns: repeat(3, 1fr); }
}

/* 空态 */
.empty-state {
  display: none;
  text-align: center;
  padding: 48px 24px;
}
.empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--primary);
  margin-bottom: 16px;
}
.empty-state p {
  font-size: 14px;
  color: var(--text-muted);
}