/* roulang page: index */
/* ============================================================
   乐鱼体育官方网站 - 完整现代视觉系统
   ============================================================ */

:root {
  --primary: #0b2545;
  --primary-deep: #081b33;
  --primary-soft: #e8edf3;
  --accent: #d19a3e;
  --accent-dark: #b8842f;
  --accent-soft: #faf3e4;
  --bg-main: #f8f7f4;
  --bg-light: #ffffff;
  --text-main: #1e293b;
  --text-weak: #55738c;
  --border: #e2e8f0;
  --radius: 18px;
  --radius-sm: 10px;
  --radius-lg: 26px;
  --shadow: 0 4px 20px rgba(11, 37, 69, 0.08);
  --shadow-hover: 0 10px 34px rgba(11, 37, 69, 0.14);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button, input {
  font-family: inherit;
  font-size: inherit;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 30px;
}

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

.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  background: var(--accent-soft);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 14px;
}

.section-title {
  font-size: 34px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--primary);
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 16px;
  color: var(--text-weak);
  margin: 0;
  line-height: 1.8;
}

/* ============ 按钮组件 ============ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 50px;
  border: 2px solid var(--accent);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 6px 18px rgba(209, 154, 62, 0.35);
}

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(209, 154, 62, 0.45);
  color: #fff;
}

.btn-primary:focus {
  outline: 3px solid rgba(209, 154, 62, 0.4);
  outline-offset: 2px;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 30px;
  border-radius: 50px;
  border: 2px solid rgba(255,255,255,0.55);
  cursor: pointer;
  transition: var(--transition);
}

.btn-ghost:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.btn-ghost:focus {
  outline: 3px solid rgba(255,255,255,0.3);
  outline-offset: 2px;
}

/* ============ 导航头部 ============ */
.site-header {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 42px;
  height: 42px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(209, 154, 62, 0.4);
}

.brand-text {
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.header-search {
  flex: 1;
  max-width: 420px;
  margin: 0 16px;
}

.search-form {
  display: flex;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 50px;
  overflow: hidden;
  transition: var(--transition);
}

.search-form:focus-within {
  border-color: var(--accent);
  background: rgba(255,255,255,0.16);
  box-shadow: 0 0 0 3px rgba(209,154,62,0.2);
}

.search-form input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 11px 20px;
  color: #fff;
  font-size: 14px;
}

.search-form input::placeholder {
  color: rgba(255,255,255,0.55);
}

.search-form input:focus {
  outline: none;
}

.search-form button {
  width: 46px;
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.7);
  cursor: pointer;
  transition: var(--transition);
}

.search-form button:hover {
  color: var(--accent);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.nav-link {
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 30px;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.nav-link.active {
  color: #fff;
  background: var(--accent);
  font-weight: 600;
}

.mobile-toggle {
  display: none;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.mobile-toggle:hover {
  background: rgba(255,255,255,0.2);
}

/* 移动端导航面板 */
.mobile-nav {
  display: none;
  background: var(--primary-deep);
  padding: 18px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.mobile-nav.show {
  display: block;
}

.mobile-nav-inner {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mobile-nav .nav-link {
  display: block;
  padding: 13px 20px;
  border-radius: 12px;
  font-size: 16px;
}

.mobile-nav .nav-link.active {
  background: var(--accent);
}

/* ============ Hero 首屏 ============ */
.hero {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 120px 0 140px;
  color: #fff;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(8,27,51,0.92) 18%, rgba(11,37,69,0.72) 55%, rgba(11,37,69,0.35) 100%);
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.28);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
  backdrop-filter: blur(6px);
}

.hero-badge i {
  color: var(--accent);
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}

.hero-desc {
  font-size: 18px;
  line-height: 1.85;
  color: rgba(255,255,255,0.85);
  max-width: 620px;
  margin: 0 0 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 720px;
}

.hero-stat-card {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.hero-stat-card:hover {
  background: rgba(255,255,255,0.16);
  transform: translateY(-4px);
}

.hero-stat-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}

.hero-stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-top: 6px;
}

.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  display: block;
  z-index: 2;
}

/* ============ 核心功能板块 ============ */
.features {
  padding: 100px 0;
  background: var(--bg-main);
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--accent-soft);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 24px;
  margin-bottom: 22px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
  margin: 0;
}

/* ============ 分类入口板块 ============ */
.categories {
  padding: 100px 0;
  background: var(--bg-light);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: block;
  background: var(--primary);
  min-height: 320px;
  transition: var(--transition);
}

.category-card img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  opacity: 0.55;
  transition: var(--transition);
}

.category-card:hover img {
  transform: scale(1.05);
  opacity: 0.4;
}

.category-card-body {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px;
  background: linear-gradient(180deg, transparent 30%, rgba(8,27,51,0.85) 100%);
}

.category-card-tag {
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.category-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 8px;
}

.category-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.8);
  margin: 0 0 16px;
}

.category-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

.category-card-link i {
  transition: transform 0.3s ease;
}

.category-card:hover .category-card-link i {
  transform: translateX(5px);
}

/* ============ 平台介绍板块 ============ */
.about-platform {
  padding: 100px 0;
  background: #eef0f4;
}

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

.about-img {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}

.about-img img {
  width: 100%;
  display: block;
}

.about-content ul {
  list-style: none;
  padding: 0;
  margin: 24px 0 28px;
}

.about-content li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 9px 0;
  font-size: 15px;
  color: var(--text-main);
}

.about-content li i {
  color: var(--accent);
  font-size: 18px;
  margin-top: 3px;
  width: 20px;
  flex-shrink: 0;
}

/* ============ 最新资讯板块 ============ */
.news-section {
  padding: 100px 0;
  background: var(--bg-main);
}

.news-section .section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: var(--transition);
}

.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: transparent;
}

.news-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 100px;
}

.news-date {
  font-size: 13px;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 10px;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin: 0 0 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-dark);
}

.read-more i {
  transition: transform 0.3s ease;
}

.news-card:hover .read-more i {
  transform: translateX(5px);
}

.no-data {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
  color: var(--text-weak);
}

/* ============ 使用流程板块 ============ */
.steps-section {
  padding: 100px 0;
  background: var(--bg-light);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.step-card {
  text-align: center;
  padding: 40px 30px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-main);
  transition: var(--transition);
  position: relative;
}

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

.step-num {
  width: 56px;
  height: 56px;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 22px;
  box-shadow: 0 6px 16px rgba(11,37,69,0.25);
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 12px;
}

.step-card p {
  font-size: 15px;
  color: var(--text-weak);
  margin: 0;
  line-height: 1.75;
}

/* ============ 数据统计板块 ============ */
.stats-section {
  background: var(--primary);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  background-blend-mode: multiply;
  padding: 80px 0;
  position: relative;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(8,27,51,0.88);
}

.stats-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.stat-block {
  text-align: center;
  padding: 28px 16px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}

.stat-block:hover {
  background: rgba(255,255,255,0.1);
}

.stat-block i {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 12px;
  display: block;
}

.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin-top: 6px;
}

/* ============ FAQ 板块 ============ */
.faq-section {
  padding: 100px 0;
  background: var(--bg-main);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(209,154,62,0.3);
}

.faq-item.open {
  border-color: rgba(209,154,62,0.4);
  box-shadow: var(--shadow);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 28px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--accent-dark);
}

.faq-question i {
  font-size: 16px;
  color: var(--text-weak);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.open .faq-question i {
  transform: rotate(45deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 28px 24px;
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ============ CTA 板块 ============ */
.cta-section {
  padding: 90px 0;
  background: var(--bg-light);
}

.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
  border-radius: 32px;
  padding: 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(209,154,62,0.2) 0%, transparent 70%);
}

.cta-box::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -20%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(209,154,62,0.15) 0%, transparent 70%);
}

.cta-box > * {
  position: relative;
  z-index: 2;
}

.cta-box h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin: 0 0 12px;
}

.cta-box p {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  margin: 0 0 30px;
}

.subscribe-form {
  display: flex;
  max-width: 460px;
  margin: 0 auto;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px;
  padding: 5px;
}

.subscribe-form input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 12px 22px;
  color: #fff;
  font-size: 14px;
}

.subscribe-form input::placeholder {
  color: rgba(255,255,255,0.5);
}

.subscribe-form input:focus {
  outline: none;
}

.subscribe-form button {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.subscribe-form button:hover {
  background: var(--accent-dark);
}

.subscribe-message {
  color: var(--accent);
  font-size: 14px;
  margin-top: 12px;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--primary-deep);
  padding: 70px 0 0;
  color: rgba(255,255,255,0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand .brand-text {
  color: #fff;
  font-size: 20px;
}

.footer-brand p {
  font-size: 14px;
  margin-top: 18px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
}

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

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: 12px;
}

.footer-col a {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ============ 响应式断点 ============ */
@media (max-width: 1100px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  .header-search {
    max-width: 300px;
  }
  
  .nav-link {
    padding: 8px 12px;
    font-size: 13px;
  }
  
  .hero h1 {
    font-size: 44px;
  }
  
  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
  
  .category-card-body {
    padding: 20px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .header-search {
    display: none;
  }
  
  .header-nav {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .header-inner {
    padding: 14px 0;
  }
  
  .hero {
    padding: 80px 0 100px;
  }
  
  .hero h1 {
    font-size: 36px;
  }
  
  .hero-desc {
    font-size: 16px;
  }
  
  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  
  .hero-stat-card {
    padding: 16px;
  }
  
  .hero-stat-num {
    font-size: 30px;
  }
  
  .features,
  .categories,
  .about-platform,
  .news-section,
  .steps-section,
  .faq-section {
    padding: 64px 0;
  }
  
  .features-grid,
  .category-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .news-grid {
    grid-template-columns: 1fr;
  }
  
  .steps-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .section-title {
    font-size: 26px;
  }
  
  .cta-box {
    padding: 40px 24px;
  }
  
  .cta-box h2 {
    font-size: 26px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .container {
    padding: 0 20px;
  }
}

@media (max-width: 520px) {
  .brand-text {
    font-size: 16px;
  }
  
  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }
  
  .hero h1 {
    font-size: 30px;
  }
  
  .hero-desc {
    font-size: 15px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost {
    width: 100%;
    justify-content: center;
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .news-card {
    padding: 22px;
  }
  
  .news-section .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  
  .subscribe-form {
    flex-direction: column;
    border-radius: 20px;
  }
  
  .subscribe-form input {
    text-align: center;
    padding: 12px;
  }
  
  .subscribe-form button {
    margin-top: 8px;
  }
  
  .cta-box {
    padding: 30px 20px;
  }
  
  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }
  
  .faq-answer-inner {
    padding: 0 20px 18px;
  }
}

/* roulang page: category1 */
/* ======= 设计变量 ======= */
    :root {
      --primary: #0f766e;
      --primary-600: #0b5d57;
      --primary-100: #ccfbf1;
      --secondary: #f59e0b;
      --secondary-600: #d97706;
      --accent: #e11d48;
      --dark: #0f172a;
      --dark-800: #1e293b;
      --bg-light: #f8fafc;
      --bg-soft: #f0fdfa;
      --text: #1e293b;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --border: #e2e8f0;
      --white: #ffffff;
      --radius: 16px;
      --radius-sm: 10px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
      --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
      --spacing-section: clamp(3.5rem, 8vw, 6rem);
      --font-scale: 1.075;
    }

    /* ======= Reset & Base ======= */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
      font-size: 16px;
      line-height: 1.7;
      color: var(--text);
      background: var(--white);
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.25s ease, opacity 0.25s ease;
    }

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

    ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
      outline: none;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    @media screen and (max-width: 640px) {
      .container {
        padding: 0 20px;
      }
    }

    /* ======= Header / 导航 ======= */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    }

    .header-inner {
      display: flex;
      align-items: center;
      gap: 28px;
      height: 72px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), #14b8a6);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      box-shadow: 0 4px 14px rgba(15, 118, 110, 0.3);
    }

    .brand-text {
      font-weight: 800;
      font-size: 1.2rem;
      letter-spacing: -0.01em;
      color: var(--dark);
      white-space: nowrap;
      line-height: 1.3;
    }
    
    .brand-text .brand-sub {
      display: block;
      font-size: 0.7rem;
      font-weight: 500;
      color: var(--primary);
      letter-spacing: 0.04em;
    }

    .header-search {
      flex: 1;
      max-width: 460px;
      position: relative;
      margin: 0 auto;
    }

    .header-search .search-icon {
      position: absolute;
      left: 16px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-light);
      font-size: 14px;
      pointer-events: none;
    }

    .header-search input {
      width: 100%;
      height: 42px;
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 0 44px;
      font-size: 0.9rem;
      color: var(--text);
      transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
    }

    .header-search input::placeholder {
      color: var(--text-light);
    }

    .header-search input:focus {
      border-color: var(--primary);
      background: #fff;
      box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.12);
    }

    .header-search .search-btn {
      position: absolute;
      right: 4px;
      top: 50%;
      transform: translateY(-50%);
      height: 34px;
      padding: 0 18px;
      border: none;
      background: var(--primary);
      color: #fff;
      font-size: 0.8rem;
      font-weight: 600;
      border-radius: 999px;
      cursor: pointer;
      transition: background 0.25s, transform 0.15s;
    }

    .header-search .search-btn:hover {
      background: var(--primary-600);
      transform: translateY(-50%) scale(1.03);
    }

    .header-nav {
      display: flex;
      align-items: center;
      gap: 4px;
      margin-left: auto;
      flex-shrink: 0;
    }

    .header-nav .nav-link {
      display: inline-block;
      padding: 8px 16px;
      border-radius: 8px;
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--text-muted);
      transition: color 0.2s, background 0.2s;
      white-space: nowrap;
    }

    .header-nav .nav-link:hover {
      color: var(--primary);
      background: var(--primary-100);
    }

    .header-nav .nav-link.active {
      color: var(--primary);
      background: var(--primary-100);
      font-weight: 600;
    }

    .header-toggle {
      display: none;
      background: none;
      border: none;
      padding: 8px;
      cursor: pointer;
    }

    .header-toggle i {
      font-size: 1.4rem;
      color: var(--dark);
    }

    .mobile-menu {
      display: none;
      background: #fff;
      border-top: 1px solid var(--border);
      padding: 16px 20px;
    }

    .mobile-menu.open {
      display: block;
    }

    .mobile-menu .nav-link {
      display: block;
      padding: 14px 12px;
      border-radius: 10px;
      font-size: 0.95rem;
      color: var(--text);
      border-bottom: 1px solid #f1f5f9;
    }

    .mobile-menu .nav-link:last-child {
      border-bottom: none;
    }

    .mobile-menu .nav-link.active {
      color: var(--primary);
      background: var(--primary-100);
      font-weight: 600;
    }

    /* ======= Hero / Banner ======= */
    .page-banner {
      position: relative;
      padding: clamp(72px, 10vw, 120px) 0 clamp(64px, 8vw, 100px);
      background: linear-gradient(135deg, rgba(0,0,0,0.82), rgba(0,0,0,0.55)),
        url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
      color: #fff;
      overflow: hidden;
    }

    .page-banner::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 40%;
      background: linear-gradient(to top, rgba(255,255,255,0.06), transparent);
      pointer-events: none;
    }

    .banner-inner {
      position: relative;
      z-index: 2;
      max-width: 860px;
    }

    .page-banner .banner-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255,255,255,0.15);
      border: 1px solid rgba(255,255,255,0.22);
      padding: 6px 16px;
      border-radius: 999px;
      font-size: 0.8rem;
      font-weight: 500;
      color: #f0fdfa;
      backdrop-filter: blur(6px);
      margin-bottom: 22px;
      letter-spacing: 0.02em;
    }

    .page-banner h1 {
      font-size: clamp(2.2rem, 5vw, 3.6rem);
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }

    .page-banner h1 span {
      color: var(--secondary);
    }

    .page-banner .banner-desc {
      font-size: 1.05rem;
      line-height: 1.8;
      color: rgba(255,255,255,0.88);
      max-width: 720px;
      margin-bottom: 28px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 999px;
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      border: none;
      transition: all 0.25s ease;
      line-height: 1.4;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 18px rgba(15, 118, 110, 0.3);
    }

    .btn-primary:hover {
      background: var(--primary-600);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(15, 118, 110, 0.35);
    }

    .btn-secondary {
      background: var(--secondary);
      color: #fff;
      box-shadow: 0 4px 18px rgba(245, 158, 11, 0.3);
    }

    .btn-secondary:hover {
      background: var(--secondary-600);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: transparent;
      color: #fff;
      border: 1px solid rgba(255,255,255,0.4);
    }

    .btn-outline:hover {
      border-color: #fff;
      background: rgba(255,255,255,0.1);
      transform: translateY(-2px);
    }

    /* ======= 板块通用 ======= */
    .section {
      padding: var(--spacing-section) 0;
    }

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

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

    .section-dark {
      background: var(--dark);
      color: #fff;
    }

    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto clamp(2.5rem, 5vw, 3.5rem);
    }

    .section-head .section-eyebrow {
      display: inline-block;
      background: var(--primary-100);
      color: var(--primary);
      font-size: 0.78rem;
      font-weight: 700;
      padding: 5px 16px;
      border-radius: 999px;
      margin-bottom: 14px;
      letter-spacing: 0.05em;
      text-transform: uppercase;
    }

    .section-head h2 {
      font-size: clamp(1.7rem, 3.5vw, 2.5rem);
      font-weight: 800;
      color: var(--dark);
      line-height: 1.3;
      letter-spacing: -0.02em;
      margin-bottom: 12px;
    }

    .section-head p {
      color: var(--text-muted);
      font-size: 0.98rem;
      line-height: 1.75;
    }

    .section-dark .section-head h2 {
      color: #fff;
    }

    .section-dark .section-head p {
      color: rgba(255,255,255,0.7);
    }

    .section-dark .section-head .section-eyebrow {
      background: rgba(255,255,255,0.12);
      color: var(--secondary);
    }

    /* ======= 活动统计栏 ======= */
    .stats-strip {
      background: var(--dark);
      padding: 36px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .stat-item .stat-num {
      font-size: clamp(1.8rem, 3.5vw, 2.6rem);
      font-weight: 800;
      color: var(--secondary);
      line-height: 1.2;
    }

    .stat-item .stat-label {
      font-size: 0.9rem;
      color: rgba(255,255,255,0.65);
      margin-top: 6px;
    }

    @media screen and (max-width: 768px) {
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px 16px;
      }
    }

    /* ======= 核心福利卡片集 ======= */
    .benefit-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .benefit-card {
      background: #fff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      padding: 30px 26px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .benefit-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      opacity: 0;
      transition: opacity 0.3s;
    }

    .benefit-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(15, 118, 110, 0.18);
    }

    .benefit-card:hover::before {
      opacity: 1;
    }

    .benefit-card .card-icon {
      width: 54px;
      height: 54px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 18px;
    }

    .benefit-card .card-icon.i-1 {
      background: #ccfbf1;
      color: var(--primary);
    }

    .benefit-card .card-icon.i-2 {
      background: #fef3c7;
      color: var(--secondary);
    }

    .benefit-card .card-icon.i-3 {
      background: #ffe4e6;
      color: var(--accent);
    }

    .benefit-card .card-icon.i-4 {
      background: #ede9fe;
      color: #7c3aed;
    }

    .benefit-card .card-icon.i-5 {
      background: #e0f2fe;
      color: #0284c7;
    }

    .benefit-card .card-icon.i-6 {
      background: #d1fae5;
      color: #059669;
    }

    .benefit-card h3 {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .benefit-card .card-desc {
      font-size: 0.88rem;
      line-height: 1.7;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    @media screen and (max-width: 1024px) {
      .benefit-cards {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media screen and (max-width: 640px) {
      .benefit-cards {
        grid-template-columns: 1fr;
      }
    }

    /* ======= 热门活动大卡 ======= */
    .featured-promo {
      background: linear-gradient(135deg, #0f172a 0%, #134e4a 100%);
      border-radius: var(--radius-lg);
      padding: clamp(28px, 5vw, 56px);
      margin-top: 24px;
      position: relative;
      overflow: hidden;
    }

    .featured-promo::after {
      content: "";
      position: absolute;
      right: -60px;
      top: -60px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(245, 158, 11, 0.25), transparent 70%);
    }

    .promo-grid {
      display: grid;
      grid-template-columns: 1.3fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .promo-grid .promo-labels {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-bottom: 16px;
    }

    .promo-labels .label {
      background: rgba(255,255,255,0.12);
      border: 1px solid rgba(255,255,255,0.2);
      color: #fff;
      padding: 4px 14px;
      font-size: 0.75rem;
      border-radius: 999px;
      font-weight: 500;
      letter-spacing: 0.03em;
    }

    .promo-grid h3 {
      font-size: clamp(1.4rem, 3vw, 2rem);
      font-weight: 800;
      color: #fff;
      margin-bottom: 14px;
      line-height: 1.4;
    }

    .promo-grid .promo-desc {
      color: rgba(255,255,255,0.78);
      font-size: 0.95rem;
      line-height: 1.8;
      margin-bottom: 24px;
      max-width: 560px;
    }

    .promo-grid .promo-meta {
      display: flex;
      gap: 24px;
      margin-bottom: 24px;
    }

    .promo-meta .meta-item {
      color: rgba(255,255,255,0.7);
      font-size: 0.85rem;
    }

    .promo-meta .meta-item i {
      color: var(--secondary);
      margin-right: 6px;
    }

    .promo-grid .promo-img {
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: 0 20px 48px rgba(0,0,0,0.35);
      transform: scale(1);
      transition: transform 0.5s ease;
      position: relative;
      z-index: 2;
    }

    .promo-grid .promo-img img {
      width: 100%;
      height: 100%;
      min-height: 260px;
      object-fit: cover;
    }

    .promo-grid .promo-img:hover {
      transform: scale(1.02);
    }

    @media screen and (max-width: 900px) {
      .promo-grid {
        grid-template-columns: 1fr;
      }
      .promo-grid .promo-img {
        max-width: 520px;
      }
    }

    /* ======= 横向活动列表 ======= */
    .activity-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .activity-item {
      display: flex;
      align-items: center;
      gap: 24px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 18px 22px;
      transition: all 0.3s ease;
    }

    .activity-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
      border-color: rgba(15, 118, 110, 0.2);
    }

    .activity-item .activity-thumb {
      width: 110px;
      height: 82px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      flex-shrink: 0;
      background: var(--bg-soft);
    }

    .activity-item .activity-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .activity-item .activity-content {
      flex: 1;
      min-width: 0;
    }

    .activity-item .activity-tag {
      font-size: 0.7rem;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-100);
      padding: 2px 10px;
      border-radius: 999px;
      display: inline-block;
      margin-bottom: 5px;
    }

    .activity-item h4 {
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 4px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .activity-item .activity-meta {
      font-size: 0.8rem;
      color: var(--text-light);
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
    }

    .activity-item .activity-meta i {
      margin-right: 4px;
    }

    .activity-item .activity-cta {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      padding: 8px 16px;
      border: 1px solid var(--primary);
      border-radius: 999px;
      white-space: nowrap;
      transition: all 0.25s;
    }

    .activity-item .activity-cta:hover {
      background: var(--primary);
      color: #fff;
    }

    @media screen and (max-width: 640px) {
      .activity-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
      }
      .activity-item .activity-thumb {
        width: 100%;
        height: 140px;
      }
      .activity-item .activity-cta {
        width: 100%;
        text-align: center;
      }
    }

    /* ======= 会员等级阶梯 ======= */
    .member-tiers {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .tier-card {
      background: #fff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      padding: 28px 22px;
      text-align: center;
      position: relative;
      transition: all 0.3s;
    }

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

    .tier-card.featured {
      border-color: var(--secondary);
      box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.12);
    }

    .tier-card .tier-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--secondary);
      color: #fff;
      font-size: 0.68rem;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 999px;
      letter-spacing: 0.03em;
    }

    .tier-card .tier-icon {
      font-size: 2.2rem;
      margin-bottom: 10px;
    }

    .tier-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 6px;
    }

    .tier-card .tier-desc {
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 12px;
    }

    .tier-card .tier-point {
      display: inline-block;
      font-size: 1rem;
      font-weight: 800;
      color: var(--primary);
      background: var(--primary-100);
      padding: 4px 14px;
      border-radius: 999px;
    }

    @media screen and (max-width: 900px) {
      .member-tiers {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media screen and (max-width: 520px) {
      .member-tiers {
        grid-template-columns: 1fr;
      }
    }

    /* ======= 活动流程 ======= */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 28px;
      counter-reset: step-counter;
    }

    .step-item {
      text-align: center;
      position: relative;
      padding: 10px 8px;
    }

    .step-item::before {
      counter-increment: step-counter;
      content: counter(step-counter);
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      font-size: 1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 6px 16px rgba(15, 118, 110, 0.3);
    }

    .step-item .step-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 6px;
    }

    .step-item .step-desc {
      font-size: 0.82rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    @media screen and (max-width: 900px) {
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px 16px;
      }
    }

    @media screen and (max-width: 520px) {
      .steps-grid {
        grid-template-columns: 1fr;
      }
    }

    /* ======= 标签页 ======= */
    .filter-tabs {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-bottom: clamp(2rem, 4vw, 3rem);
    }

    .filter-tab {
      padding: 8px 22px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: #fff;
      color: var(--text);
      font-size: 0.85rem;
      font-weight: 500;
      cursor: pointer;
      transition: 0.2s;
    }

    .filter-tab:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .filter-tab.active {
      background: var(--primary);
      border-color: var(--primary);
      color: #fff;
    }

    /* ======= FAQ ======= */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: all 0.3s;
    }

    .faq-item:hover {
      border-color: rgba(15, 118, 110, 0.25);
      box-shadow: var(--shadow-sm);
    }

    .faq-item summary {
      padding: 20px 24px;
      font-size: 0.96rem;
      font-weight: 600;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 12px;
      list-style: none;
      position: relative;
      transition: color 0.2s;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      font-size: 14px;
      color: var(--primary);
      margin-left: auto;
      transition: transform 0.3s;
    }

    .faq-item[open] summary::after {
      transform: rotate(180deg);
    }

    .faq-item[open] summary {
      color: var(--primary);
    }

    .faq-item summary .faq-icon {
      width: 26px;
      height: 26px;
      border-radius: 8px;
      background: var(--primary-100);
      color: var(--primary);
      font-size: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .faq-item .faq-answer {
      padding: 0 24px 22px 62px;
      font-size: 0.9rem;
      line-height: 1.75;
      color: var(--text-muted);
    }

    /* ======= CTA ======= */
    .cta-section {
      background: linear-gradient(135deg, var(--dark), var(--primary-600));
      padding: clamp(3.5rem, 7vw, 5.5rem) 0;
      text-align: center;
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      top: -30%;
      left: -20%;
      width: 500px;
      height: 500px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(245,158,11,0.2), transparent 70%);
    }

    .cta-section::after {
      content: "";
      position: absolute;
      bottom: -40%;
      right: -10%;
      width: 400px;
      height: 400px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(15,118,110,0.4), transparent 70%);
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      max-width: 660px;
      margin: 0 auto;
    }

    .cta-section h2 {
      font-size: clamp(1.7rem, 4vw, 2.6rem);
      font-weight: 800;
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }

    .cta-section p {
      font-size: 1rem;
      color: rgba(255,255,255,0.85);
      margin-bottom: 32px;
      line-height: 1.8;
    }

    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* ======= Footer ======= */
    .site-footer {
      background: var(--dark);
      color: rgba(255,255,255,0.75);
      padding: 64px 0 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }

    .footer-brand .brand {
      margin-bottom: 18px;
    }

    .footer-brand .brand .brand-text {
      color: #fff;
    }

    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.8;
      max-width: 400px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }

    .footer-col ul li {
      margin-bottom: 12px;
    }

    .footer-col ul li a {
      font-size: 0.88rem;
      color: rgba(255,255,255,0.68);
      transition: color 0.2s, padding-left 0.2s;
    }

    .footer-col ul li a:hover {
      color: var(--secondary);
      padding-left: 4px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 22px;
      text-align: center;
      font-size: 0.82rem;
      color: rgba(255,255,255,0.5);
    }

    @media screen and (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
    }

    /* ======= 响应式导航 ======= */
    @media screen and (max-width: 1024px) {
      .header-search {
        max-width: 320px;
      }
      .header-nav .nav-link {
        padding: 8px 10px;
        font-size: 0.82rem;
      }
    }

    @media screen and (max-width: 768px) {
      .header-inner {
        gap: 12px;
      }
      .header-search {
        display: none;
      }
      .header-nav {
        display: none;
      }
      .header-toggle {
        display: inline-flex;
        margin-left: auto;
      }
    }

    @media screen and (min-width: 769px) {
      .mobile-menu {
        display: none !important;
      }
    }

    /* ======= 其它 ======= */
    .text-muted {
      color: var(--text-muted);
    }

    .mt-2 { margin-top: 2rem; }
    .mt-3 { margin-top: 3rem; }

    .wave-divider {
      position: relative;
      height: 80px;
      background: var(--bg-light);
      clip-path: polygon(0 0, 100% 0, 100% 70%, 0 100%);
      margin-bottom: -80px;
    }

/* roulang page: article */
:root {
            --primary: #1a3d6d;
            --primary-light: #2c5aa0;
            --primary-dark: #0f2440;
            --accent: #e63946;
            --accent-light: #ff6b6b;
            --accent-dark: #d62839;
            --bg-white: #ffffff;
            --bg-light: #f4f6f9;
            --bg-dark: #12263a;
            --text-main: #1e293b;
            --text-muted: #5a6b7f;
            --border: #e4e9f0;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(18, 38, 58, 0.06);
            --shadow-md: 0 8px 24px rgba(18, 38, 58, 0.08);
            --shadow-lg: 0 16px 44px rgba(18, 38, 58, 0.12);
            --transition: 0.25s ease;
            --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        *, *::before, *::after { box-sizing: border-box; }
        body {
            margin: 0;
            font-family: var(--font-main);
            color: var(--text-main);
            background: var(--bg-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        h1, h2, h3, h4, h5, h6 { margin: 0; line-height: 1.3; font-weight: 700; }
        p { margin: 0; }
        ul { list-style: none; margin: 0; padding: 0; }
        a { text-decoration: none; color: inherit; transition: color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input { font-family: inherit; font-size: inherit; }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 26px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 15px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 61, 109, 0.3);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.3);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
        }
        .btn-block { width: 100%; justify-content: center; }

        /* ===== Header ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 10px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            gap: 24px;
            min-height: 74px;
            padding: 10px 0;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: var(--shadow-sm);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-main);
            font-weight: 500;
            font-size: 15px;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 61, 109, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(26, 61, 109, 0.08);
            font-weight: 600;
        }
        .header-search {
            flex-shrink: 0;
            width: 260px;
        }
        .search-form {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-form .fa-search {
            position: absolute;
            left: 14px;
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
            z-index: 1;
        }
        .search-form input {
            width: 100%;
            padding: 10px 44px 10px 36px;
            border: 1px solid var(--border);
            border-radius: 30px;
            background: var(--bg-light);
            outline: none;
            transition: all var(--transition);
            font-size: 14px;
            color: var(--text-main);
        }
        .search-form input:focus {
            border-color: var(--primary-light);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(26, 61, 109, 0.1);
        }
        .search-form button {
            position: absolute;
            right: 4px;
            padding: 6px 14px;
            border: none;
            border-radius: 20px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .search-form button:hover {
            background: var(--primary-light);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-light);
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            padding: 64px 0 80px;
            color: #fff;
            background-color: var(--primary-dark);
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 18px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.9);
        }
        .breadcrumb a:hover {
            color: var(--accent-light);
        }
        .breadcrumb .sep {
            opacity: 0.5;
        }
        .breadcrumb .current {
            color: rgba(255, 255, 255, 0.95);
        }
        .article-hero h1 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.35;
            max-width: 780px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
        }
        .article-meta {
            display: flex;
            gap: 22px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            flex-wrap: wrap;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .article-meta i {
            color: var(--accent-light);
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 44px 0 60px;
            background: var(--bg-light);
        }
        .article-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 36px 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(228, 233, 240, 0.6);
        }
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: #2d3a4a;
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body h2 {
            font-size: 24px;
            color: var(--primary);
            margin: 36px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--accent);
        }
        .article-body h3 {
            font-size: 20px;
            color: var(--primary);
            margin: 28px 0 14px;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow-md);
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-light);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body ul {
            margin: 16px 0;
            padding-left: 22px;
            list-style: disc;
        }
        .article-body ul li {
            margin-bottom: 8px;
        }
        .article-body ol {
            margin: 16px 0;
            padding-left: 22px;
            list-style: decimal;
        }
        .article-body ol li {
            margin-bottom: 8px;
        }
        .article-body a {
            color: var(--primary-light);
            text-decoration: underline;
        }
        .article-body a:hover {
            color: var(--accent);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 15px;
        }
        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-body th {
            background: var(--bg-light);
            font-weight: 600;
            color: var(--primary);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 30px;
            padding-top: 22px;
            border-top: 1px solid var(--border);
        }
        .article-share span {
            font-size: 14px;
            color: var(--text-muted);
            margin-right: 4px;
        }
        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            background: var(--bg-light);
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .share-btn.weixin:hover { background: #07c160; }
        .share-btn.weibo:hover { background: #e6162d; }
        .share-btn.qq:hover { background: #12b7f5; }

        .article-actions {
            margin-top: 24px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(228, 233, 240, 0.5);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .sidebar-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .sidebar-title {
            font-size: 18px;
            color: var(--primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-title i {
            color: var(--accent);
            font-size: 16px;
        }
        .sidebar-list li {
            padding: 9px 0;
            border-bottom: 1px solid rgba(228, 233, 240, 0.5);
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-main);
        }
        .sidebar-list a:hover {
            color: var(--primary);
        }
        .sidebar-list .item-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            margin-top: 9px;
            flex-shrink: 0;
        }
        .sidebar-list .item-text {
            flex: 1;
        }
        .sidebar-cats {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .cat-tag {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            border: 1px solid transparent;
            transition: all var(--transition);
        }
        .cat-tag i {
            color: var(--primary);
            width: 18px;
        }
        .cat-tag:hover {
            border-color: var(--primary-light);
            background: rgba(26, 61, 109, 0.04);
            color: var(--primary);
            transform: translateX(4px);
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            border: none;
        }
        .sidebar-cta h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }
        .sidebar-cta p {
            font-size: 14px;
            opacity: 0.8;
            margin-bottom: 16px;
        }
        .sidebar-cta .btn {
            background: var(--accent);
            color: #fff;
        }
        .sidebar-cta .btn:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 64px 0 70px;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-badge {
            display: inline-block;
            padding: 5px 16px;
            background: rgba(230, 57, 70, 0.1);
            color: var(--accent);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 1px;
        }
        .section-header h2 {
            font-size: 30px;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 15px;
        }
        .related-grid .cell {
            margin-bottom: 20px;
        }
        .related-card {
            display: block;
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: all var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .related-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-light);
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.05);
        }
        .related-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 36, 64, 0.35));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .related-card:hover .related-cover::after {
            opacity: 1;
        }
        .related-body {
            padding: 20px;
        }
        .card-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(26, 61, 109, 0.08);
            color: var(--primary);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .related-body h3 {
            font-size: 16px;
            line-height: 1.5;
            color: var(--text-main);
            font-weight: 600;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card:hover .related-body h3 {
            color: var(--primary);
        }
        .related-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(18, 38, 58, 0.92), rgba(26, 61, 109, 0.88)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            color: #fff;
            text-align: center;
            position: relative;
        }
        .cta-box {
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .cta-box p {
            font-size: 16px;
            opacity: 0.85;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 内容未找到 ===== */
        .not-found-section {
            padding: 100px 0;
            background: var(--bg-light);
            min-height: 60vh;
            display: flex;
            align-items: center;
        }
        .not-found-card {
            max-width: 520px;
            margin: 0 auto;
            text-align: center;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 50px 40px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }
        .not-found-card i {
            font-size: 52px;
            color: var(--accent);
            margin-bottom: 18px;
        }
        .not-found-card h1 {
            font-size: 26px;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .not-found-card p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand .brand {
            margin-bottom: 14px;
        }
        .footer-brand .brand-mark {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
        }
        .footer-brand .brand-text {
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            opacity: 0.75;
            max-width: 360px;
            margin-top: 12px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 30px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            transition: all var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
            padding-left: 5px;
        }
        .footer-col ul a i {
            color: var(--accent-light);
            margin-right: 8px;
        }
        .footer-bottom {
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            opacity: 0.6;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .header-search { width: 200px; }
            .nav-link { padding: 8px 10px; font-size: 14px; }
            .article-hero h1 { font-size: 28px; }
            .section-header h2 { font-size: 26px; }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                padding: 10px 0;
                gap: 12px;
            }
            .header-nav {
                display: none;
                width: 100%;
                order: 3;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 0;
                border-top: 1px solid var(--border);
                gap: 2px;
            }
            .header-nav.nav-open {
                display: flex;
            }
            .nav-link {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                text-align: left;
            }
            .nav-toggle {
                display: block;
                margin-left: auto;
            }
            .header-search {
                order: 2;
                width: calc(100% - 110px);
                margin-left: auto;
            }
            .brand-text {
                font-size: 18px;
            }
            .article-hero {
                padding: 44px 0 60px;
            }
            .article-hero h1 {
                font-size: 24px;
            }
            .article-meta {
                gap: 14px;
                font-size: 13px;
            }
            .article-card {
                padding: 24px 20px;
            }
            .article-body {
                font-size: 15px;
                line-height: 1.8;
            }
            .article-body h2 {
                font-size: 21px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .related-section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .cta-section {
                padding: 60px 0;
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .sidebar-cta .btn {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .brand-text {
                font-size: 16px;
            }
            .brand-mark {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .header-search {
                width: calc(100% - 100px);
            }
            .search-form input {
                padding: 8px 40px 8px 32px;
                font-size: 13px;
            }
            .search-form button {
                padding: 4px 10px;
                font-size: 12px;
            }
            .article-hero h1 {
                font-size: 21px;
            }
            .article-meta {
                flex-direction: column;
                gap: 6px;
            }
            .article-card {
                padding: 20px 16px;
                border-radius: 10px;
            }
            .article-body {
                font-size: 14px;
            }
            .article-share {
                flex-wrap: wrap;
            }
            .related-body {
                padding: 16px;
            }
            .related-body h3 {
                font-size: 15px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-buttons .btn {
                justify-content: center;
            }
            .not-found-card {
                padding: 36px 24px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #e63946;
  --primary-dark: #c42d39;
  --primary-light: #ff6b75;
  --accent: #ffd166;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --bg-dark: #1a1a2e;
  --text-main: #212529;
  --text-weak: #6c757d;
  --border-light: #e9ecef;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xs: 8px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  --space-section: 80px;
  --space-card: 24px;
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-main); color: var(--text-main); background: var(--bg-light); line-height: 1.7; font-size: 16px; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.3s ease; }
ul, ol { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-section) 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-head .eyebrow { display: inline-block; background: rgba(230, 57, 70, 0.08); color: var(--primary); font-size: 14px; font-weight: 600; padding: 6px 16px; border-radius: 30px; margin-bottom: 16px; letter-spacing: 1px; }
.section-head h2 { font-size: 32px; font-weight: 700; line-height: 1.3; margin-bottom: 12px; }
.section-head p { color: var(--text-weak); font-size: 16px; }

/* 顶部导航 */
.site-header { background: var(--bg-dark); position: sticky; top: 0; z-index: 100; box-shadow: 0 4px 24px rgba(0,0,0,0.15); }
.header-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; padding: 14px 0; gap: 12px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { width: 40px; height: 40px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; flex-shrink: 0; }
.brand-text { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: 1px; white-space: nowrap; }
.header-search { flex: 1; max-width: 440px; position: relative; }
.header-search input { width: 100%; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); border-radius: 30px; padding: 12px 44px 12px 18px; color: #fff; font-size: 14px; outline: none; transition: border-color 0.3s, background 0.3s; }
.header-search input::placeholder { color: rgba(255,255,255,0.6); }
.header-search input:focus { border-color: var(--primary-light); background: rgba(255,255,255,0.15); }
.header-search i { position: absolute; right: 18px; top: 50%; transform: translateY(-50%); color: rgba(255,255,255,0.7); }
.header-nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.header-nav .nav-link { color: rgba(255,255,255,0.8); font-size: 14px; font-weight: 500; padding: 8px 14px; border-radius: 20px; transition: all 0.3s ease; }
.header-nav .nav-link:hover { background: rgba(255,255,255,0.1); color: #fff; }
.header-nav .nav-link.active { background: var(--primary); color: #fff; }
.header-cta { background: linear-gradient(135deg, var(--primary), var(--primary-light)); border: none; border-radius: 24px; color: #fff; font-weight: 600; font-size: 14px; padding: 10px 18px; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s; }
.header-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(230, 57, 70, 0.4); }

/* 移动端菜单 */
.mobile-menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 22px; cursor: pointer; padding: 4px; }
@media (max-width: 900px) {
  .mobile-menu-toggle { display: block; }
  .header-inner { flex-wrap: wrap; }
  .header-search { order: 3; max-width: 100%; flex-basis: 100%; }
  .header-nav { display: none; order: 4; flex-basis: 100%; flex-direction: column; align-items: stretch; padding: 12px 0; gap: 4px; }
  .header-nav.open { display: flex; }
  .header-nav .nav-link { padding: 12px 16px; border-radius: 8px; text-align: center; }
}

/* 横幅区域 */
.category-banner { background: linear-gradient(135deg, #1a1a2e 0%, #2d2d5e 50%, #3a3a7a 100%); position: relative; overflow: hidden; padding: 80px 0; color: #fff; }
.category-banner::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.2; }
.category-banner::after { content: ''; position: absolute; bottom: -60px; right: -60px; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(230,57,70,0.3), transparent 70%); }
.banner-content { position: relative; z-index: 2; max-width: 720px; }
.banner-badge { display: inline-block; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.2); border-radius: 30px; padding: 6px 18px; font-size: 13px; letter-spacing: 1px; margin-bottom: 20px; backdrop-filter: blur(8px); }
.banner-content h1 { font-size: 42px; line-height: 1.2; margin-bottom: 18px; font-weight: 800; }
.banner-content p { font-size: 17px; opacity: 0.9; margin-bottom: 28px; max-width: 560px; line-height: 1.8; }
.banner-stats { display: flex; gap: 32px; flex-wrap: wrap; margin-top: 24px; }
.banner-stat { text-align: center; }
.banner-stat .num { font-size: 28px; font-weight: 800; color: var(--accent); }
.banner-stat .label { font-size: 13px; opacity: 0.8; }

/* 福利特色 */
.feature-strip { background: var(--bg-white); border-bottom: 1px solid var(--border-light); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 32px 0; }
.feature-item { display: flex; align-items: center; gap: 14px; }
.feature-icon { width: 44px; height: 44px; background: rgba(230,57,70,0.1); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 18px; flex-shrink: 0; }
.feature-item h4 { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.feature-item p { font-size: 13px; color: var(--text-weak); margin: 0; }

/* 活动福利卡片 */
.promotions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.promo-card { background: var(--bg-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform 0.3s, box-shadow 0.3s; border: 1px solid var(--border-light); }
.promo-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.promo-img { position: relative; height: 200px; overflow: hidden; }
.promo-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.promo-card:hover .promo-img img { transform: scale(1.05); }
.promo-tag { position: absolute; top: 14px; left: 14px; background: var(--primary); color: #fff; font-size: 12px; font-weight: 600; padding: 5px 14px; border-radius: 20px; }
.promo-tag.hot { background: #ff9500; }
.promo-tag.new { background: #2ea44f; }
.promo-body { padding: 22px; }
.promo-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.promo-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin-bottom: 16px; }
.promo-meta { display: flex; justify-content: space-between; align-items: center; padding-top: 14px; border-top: 1px solid var(--border-light); }
.promo-date { font-size: 13px; color: var(--text-weak); }
.btn-promo { background: linear-gradient(135deg, var(--primary), var(--primary-light)); border: none; color: #fff; padding: 8px 18px; border-radius: 20px; font-size: 14px; font-weight: 600; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s; }
.btn-promo:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(230,57,70,0.3); color: #fff; }

/* 流程区域 */
.process-section { background: var(--bg-white); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.process-card { position: relative; padding: 32px 20px; }
.process-step-num { width: 52px; height: 52px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: 50%; color: #fff; font-size: 20px; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; position: relative; }
.process-step-num::after { content: ''; position: absolute; top: 50%; left: 100%; width: 40px; height: 2px; background: var(--border-light); }
.process-card:last-child .process-step-num::after { display: none; }
.process-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.process-card p { font-size: 14px; color: var(--text-weak); line-height: 1.6; }

/* 排行区域 */
.rank-section { background: linear-gradient(180deg, var(--bg-light), var(--bg-white)); }
.rank-list { max-width: 780px; margin: 0 auto; }
.rank-item { display: flex; align-items: center; gap: 20px; background: var(--bg-white); border-radius: var(--radius-md); padding: 18px 22px; margin-bottom: 14px; box-shadow: var(--shadow-sm); transition: box-shadow 0.3s; border-left: 4px solid var(--primary); }
.rank-item:hover { box-shadow: var(--shadow-md); }
.rank-num { font-size: 22px; font-weight: 800; color: var(--primary); width: 42px; text-align: center; flex-shrink: 0; }
.rank-info { flex: 1; }
.rank-info h4 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.rank-info p { font-size: 14px; color: var(--text-weak); margin: 0; }
.rank-value { text-align: right; flex-shrink: 0; }
.rank-value .amount { font-size: 18px; font-weight: 700; color: var(--primary); }
.rank-value .unit { font-size: 13px; color: var(--text-weak); }
.rank-tag { display: inline-block; background: rgba(230,57,70,0.08); color: var(--primary); font-size: 12px; font-weight: 500; padding: 3px 10px; border-radius: 12px; margin-top: 4px; }

/* FAQ */
.faq-section { background: var(--bg-white); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border-light); border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; }
.faq-q { padding: 18px 22px; font-size: 16px; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; background: var(--bg-white); transition: background 0.2s; }
.faq-q:hover { background: #f8f9fa; }
.faq-q i { color: var(--primary); transition: transform 0.3s; font-size: 14px; }
.faq-item.active .faq-q i { transform: rotate(180deg); }
.faq-a { display: none; padding: 0 22px 18px; font-size: 14px; color: var(--text-weak); line-height: 1.8; }
.faq-item.active .faq-a { display: block; }

/* CTA */
.cta-section { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); position: relative; overflow: hidden; padding: 60px 0; color: #fff; text-align: center; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.15; }
.cta-inner { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
.cta-inner h2 { font-size: 32px; font-weight: 800; margin-bottom: 14px; }
.cta-inner p { font-size: 16px; opacity: 0.9; margin-bottom: 28px; }
.cta-btn { background: #fff; color: var(--primary); border: none; padding: 14px 32px; border-radius: 30px; font-size: 16px; font-weight: 700; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s; display: inline-block; }
.cta-btn:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,0.2); color: var(--primary); }

/* 页脚 */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 40px; }
.footer-brand .brand-text { font-size: 20px; margin-bottom: 16px; display: block; }
.footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 14px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 14px; color: rgba(255,255,255,0.6); transition: color 0.3s, padding-left 0.3s; }
.footer-col ul a:hover { color: #fff; padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,0.4); }

/* 响应式 */
@media (max-width: 1024px) {
  .promotions-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 26px; }
  .banner-content h1 { font-size: 30px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .rank-item { flex-wrap: wrap; }
  .rank-value { width: 100%; text-align: left; }
}
@media (max-width: 520px) {
  .promotions-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .banner-stats { gap: 16px; }
  .banner-stat .num { font-size: 22px; }
  .feature-grid { grid-template-columns: 1fr; }
}

/* roulang page: category2 */
:root {
  --color-primary: #1d4ed8;
  --color-primary-dark: #1e3a8a;
  --color-primary-light: #3b82f6;
  --color-secondary: #0ea5e9;
  --color-accent: #f59e0b;
  --color-bg: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-dark: #0f172a;
  --color-dark-soft: #1e293b;
  --color-text: #1e293b;
  --color-text-weak: #64748b;
  --color-border: #e2e8f0;
  --color-white: #ffffff;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, .06);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, .12);
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 56px;
  --space-xl: 88px;
  --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 16px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--color-primary-dark); }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--color-white); }
.section-dark { background: var(--color-dark); }

.text-center { text-align: center; }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-eyebrow {
  display: inline-block;
  background: rgba(29, 78, 216, .08);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.section-title { font-size: 34px; line-height: 1.25; font-weight: 800; color: var(--color-dark); letter-spacing: -.5px; margin: 0 0 14px; }
.section-subtitle { color: var(--color-text-weak); font-size: 16px; line-height: 1.8; margin: 0; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  border: 2px solid transparent;
  font-size: 15px;
  font-weight: 600;
  transition: all .25s ease;
  background: transparent;
  text-align: center;
}
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); box-shadow: 0 6px 20px rgba(29, 78, 216, .25); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 28px rgba(29, 78, 216, .32); }
.btn-outline { border-color: rgba(255, 255, 255, .6); color: #fff; }
.btn-outline:hover { background: rgba(255, 255, 255, .12); border-color: #fff; color: #fff; }
.btn-outline-dark { border-color: var(--color-border); color: var(--color-text); }
.btn-outline-dark:hover { border-color: var(--color-primary); color: var(--color-primary); background: rgba(29, 78, 216, .04); }
.btn-light { background: #fff; color: var(--color-dark); box-shadow: 0 4px 16px rgba(0, 0, 0, .12); }
.btn-light:hover { background: var(--color-bg-alt); color: var(--color-dark); transform: translateY(-2px); }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 300;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 18px rgba(15, 23, 42, .05);
}
.header-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0 12px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 6px 18px rgba(29, 78, 216, .3);
}
.brand-text { font-size: 20px; font-weight: 800; color: var(--color-dark); letter-spacing: -.3px; white-space: nowrap; }
.header-search {
  flex: 1;
  max-width: 520px;
  display: flex;
  align-items: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  padding: 4px 4px 4px 18px;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.header-search:focus-within { border-color: var(--color-primary); box-shadow: 0 0 0 4px rgba(29, 78, 216, .12); background: #fff; }
.header-search input { border: none; outline: none; flex: 1; font-size: 14px; background: transparent; color: var(--color-text); min-width: 0; }
.header-search input::placeholder { color: #94a3b8; }
.header-search button {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .2s, transform .2s;
  flex-shrink: 0;
}
.header-search button:hover { background: var(--color-primary-dark); transform: scale(1.05); }
.header-tools { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.tools-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--color-text-weak); font-weight: 500; }
.tools-link:hover { color: var(--color-primary); }
.tools-login { color: var(--color-text); }
.header-nav { display: flex; gap: 6px; padding-bottom: 12px; flex-wrap: wrap; }
.nav-link {
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-weak);
  background: transparent;
  transition: all .2s ease;
  white-space: nowrap;
}
.nav-link:hover { background: var(--color-bg-alt); color: var(--color-primary); }
.nav-link.active { background: var(--color-primary); color: #fff; box-shadow: 0 4px 14px rgba(29, 78, 216, .25); }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 18px;
  color: var(--color-text);
  transition: all .2s;
}
.nav-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ===== Page Banner ===== */
.page-banner {
  background-size: cover;
  background-position: center;
  padding: 90px 0;
  color: #fff;
  position: relative;
}
.banner-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .25);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.banner-badge i { color: var(--color-accent); }
.page-banner h1 { font-size: 42px; line-height: 1.2; font-weight: 800; margin: 0 0 18px; letter-spacing: -.6px; max-width: 720px; }
.page-banner .banner-desc { font-size: 17px; line-height: 1.85; color: rgba(255, 255, 255, .85); max-width: 640px; margin: 0 0 28px; }
.banner-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.banner-tags .badge { background: rgba(255, 255, 255, .14); color: #fff; border: 1px solid rgba(255, 255, 255, .2); padding: 6px 16px; border-radius: 50px; font-size: 13px; font-weight: 500; transition: background .2s; }
.banner-tags .badge:hover { background: rgba(255, 255, 255, .25); color: #fff; }

/* ===== Steps ===== */
.step-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  height: 100%;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.step-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity .3s;
}
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.step-card:hover::after { opacity: 1; }
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 20px;
  box-shadow: 0 6px 16px rgba(29, 78, 216, .25);
}
.step-card h3 { font-size: 18px; font-weight: 700; margin: 0 0 10px; color: var(--color-dark); }
.step-card p { font-size: 14px; color: var(--color-text-weak); line-height: 1.75; margin: 0; }

/* ===== Feature Cards ===== */
.feature-grid { display: flex; flex-wrap: wrap; margin: -12px; }
.feature-item { flex: 0 0 25%; padding: 12px; }
.feature-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  height: 100%;
  transition: all .3s ease;
  position: relative;
}
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(29, 78, 216, .2); }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(29, 78, 216, .08);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  transition: all .3s;
}
.feature-card:hover .feature-icon { background: var(--color-primary); color: #fff; box-shadow: 0 8px 20px rgba(29, 78, 216, .3); }
.feature-card h3 { font-size: 18px; font-weight: 700; margin: 0 0 10px; color: var(--color-dark); }
.feature-card p { font-size: 14px; color: var(--color-text-weak); line-height: 1.75; margin: 0; }

/* ===== Guide Feature ===== */
.guide-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 56px;
}
.guide-text { flex: 1 1 44%; min-width: 320px; }
.guide-text h2 { font-size: 30px; font-weight: 800; line-height: 1.3; color: #fff; margin: 0 0 14px; letter-spacing: -.4px; }
.guide-text > p { color: rgba(255, 255, 255, .75); font-size: 15px; margin: 0 0 30px; line-height: 1.8; }
.guide-media { flex: 1 1 48%; min-width: 320px; }
.guide-media .media-card { border-radius: var(--radius-lg); overflow: hidden; box-shadow: 0 24px 60px rgba(0, 0, 0, .35); border: 1px solid rgba(255, 255, 255, .12); }
.guide-media img { width: 100%; object-fit: cover; }
.guide-list { margin: 0; padding: 0; list-style: none; }
.guide-list li {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.guide-list li:last-child { border-bottom: none; }
.guide-list .step-badge {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(29, 78, 216, .3);
}
.guide-list .step-content h4 { margin: 0 0 4px; font-size: 16px; color: #fff; font-weight: 600; }
.guide-list .step-content p { margin: 0; font-size: 14px; color: rgba(255, 255, 255, .7); line-height: 1.7; }
.guide-tip {
  margin-top: 24px;
  background: rgba(245, 158, 11, .12);
  border: 1px solid rgba(245, 158, 11, .28);
  border-radius: 14px;
  padding: 16px 20px;
  font-size: 14px;
  color: #fbbf24;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.guide-tip i { margin-top: 2px; }

/* ===== Tips ===== */
.tips-wrap { display: flex; flex-wrap: wrap; gap: 56px; align-items: center; }
.tips-media { flex: 1 1 38%; min-width: 300px; }
.tips-media .media-card { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.tips-media img { width: 100%; object-fit: cover; }
.tips-body { flex: 1 1 52%; min-width: 320px; }
.tips-list { margin: 0; padding: 0; list-style: none; counter-reset: tips; }
.tips-list li {
  position: relative;
  counter-increment: tips;
  padding: 18px 0 18px 68px;
  border-bottom: 1px solid var(--color-border);
  transition: background .2s;
}
.tips-list li::before {
  content: counter(tips, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .3s;
}
.tips-list li:hover::before { background: var(--color-primary); color: #fff; box-shadow: 0 6px 18px rgba(29, 78, 216, .3); }
.tips-list li:last-child { border-bottom: none; }
.tips-list h4 { font-size: 16px; font-weight: 700; margin: 0 0 6px; color: var(--color-dark); }
.tips-list p { font-size: 14px; color: var(--color-text-weak); line-height: 1.75; margin: 0; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow .2s, border-color .2s;
}
.faq-item:hover { border-color: rgba(29, 78, 216, .2); }
.faq-item[open] { box-shadow: var(--shadow-md); border-color: transparent; }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  transition: color .2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--color-primary); }
.faq-item .faq-icon { color: var(--color-text-weak); transition: transform .3s, color .3s; font-size: 14px; }
.faq-item[open] .faq-icon { transform: rotate(45deg); color: var(--color-primary); }
.faq-answer { padding: 4px 24px 22px; color: var(--color-text-weak); font-size: 15px; line-height: 1.8; }

/* ===== CTA ===== */
.cta-section {
  background-size: cover;
  background-position: center;
  padding: 90px 0;
  text-align: center;
  position: relative;
}
.cta-inner { max-width: 640px; margin: 0 auto; padding: 0 24px; }
.cta-section h2 { color: #fff; font-size: 32px; font-weight: 800; margin: 0 0 16px; line-height: 1.3; letter-spacing: -.4px; }
.cta-section p { color: rgba(255, 255, 255, .82); font-size: 16px; line-height: 1.8; margin: 0 0 32px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* ===== Footer ===== */
.site-footer { background: #0b1120; color: #94a3b8; padding: 70px 0 0; font-size: 14px; }
.site-footer a { color: #94a3b8; transition: color .2s; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: flex; flex-wrap: wrap; gap: 48px; padding-bottom: 50px; }
.footer-brand { flex: 1 1 36%; min-width: 280px; }
.footer-brand p { margin: 18px 0 0; line-height: 1.8; font-size: 14px; color: rgba(148, 163, 184, .8); }
.footer-col { flex: 0 0 auto; min-width: 180px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin: 0 0 20px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 12px; }
.site-footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(148, 163, 184, .65);
}
.site-footer .footer-bottom p { margin: 0; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .section { padding: 64px 0; }
  .page-banner { padding: 70px 0; }
  .page-banner h1 { font-size: 34px; }
  .section-title { font-size: 28px; }
  .feature-item { flex: 0 0 50%; }
  .header-main { flex-wrap: wrap; }
  .header-search { order: 3; max-width: 100%; flex-basis: 100%; }
  .header-tools { margin-left: auto; }
}

@media (max-width: 768px) {
  .container { padding: 0 18px; }
  .header-inner { padding: 0 18px; }
  .header-main { flex-wrap: wrap; gap: 12px; }
  .header-search { order: 3; flex-basis: 100%; max-width: none; }
  .header-nav {
    display: none;
    flex-direction: column;
    padding: 12px 0 16px;
    gap: 4px;
  }
  .header-nav.open { display: flex; }
  .nav-link { padding: 10px 14px; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .feature-item { flex: 0 0 100%; }
  .guide-wrap, .tips-wrap { gap: 36px; }
  .page-banner { padding: 56px 0; }
  .page-banner h1 { font-size: 28px; }
  .section-title { font-size: 24px; }
  .section { padding: 52px 0; }
  .footer-brand { flex: 1 1 100%; }
  .step-card { padding: 24px 20px; }
  .faq-item summary { padding: 16px 18px; font-size: 15px; }
  .faq-answer { padding: 2px 18px 18px; font-size: 14px; }
  .cta-section { padding: 56px 0; }
  .cta-section h2 { font-size: 26px; }
  .brand-text { font-size: 17px; }
  .guide-list li { padding: 14px 0; }
}

@media (max-width: 520px) {
  .header-main { flex-wrap: wrap; }
  .brand-mark { width: 36px; height: 36px; font-size: 16px; }
  .brand-text { font-size: 16px; }
  .header-tools .tools-link span { display: none; }
  .header-tools { gap: 10px; }
  .page-banner h1 { font-size: 24px; }
  .page-banner .banner-desc { font-size: 15px; }
  .btn { padding: 10px 20px; font-size: 14px; }
  .tips-list li { padding-left: 54px; }
  .tips-list li::before { width: 40px; height: 40px; font-size: 13px; }
  .footer-grid { gap: 30px; }
}