/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0b1638;
  --primary-light: #152458;
  --primary-dark: #060d24;
  --accent: #e8b94a;
  --accent-light: #f4d489;
  --accent-dark: #d19c2f;
  --bg: #f6f7fb;
  --bg-white: #ffffff;
  --bg-dark: #0b1638;
  --text: #1a2333;
  --text-light: #5a6a85;
  --text-lighter: #8a97ad;
  --border: #e3e8f0;
  --border-dark: rgba(255,255,255,0.14);
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 12px 32px rgba(11,22,56,0.10);
  --shadow-lg: 0 24px 56px rgba(11,22,56,0.16);
  --transition: all .3s ease;
  --font: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

/* ===== Reset / Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
}
ul {
  list-style: none;
}
button, input {
  font-family: inherit;
  border: none;
  outline: none;
  background: none;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}
.btn i {
  font-size: 14px;
}
.btn-accent {
  background: var(--accent);
  color: var(--primary);
  box-shadow: 0 8px 24px rgba(232,185,74,0.35);
}
.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(232,185,74,0.45);
}
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--accent);
  color: var(--accent);
}
.btn-lg {
  padding: 15px 36px;
  font-size: 16px;
}
.btn-block {
  width: 100%;
}

/* ===== 导航 Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11,22,56,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(11,22,56,0.97);
  box-shadow: 0 4px 24px rgba(0,0,0,0.2);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: baseline;
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.logo span {
  color: var(--accent);
  font-weight: 700;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--accent);
  background: rgba(232,185,74,0.1);
}
.nav-link.active {
  color: var(--accent);
  background: rgba(232,185,74,0.14);
  font-weight: 600;
}
.header-cta {
  padding: 9px 22px;
  border-radius: 30px;
  background: var(--accent);
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
  transition: var(--transition);
  white-space: nowrap;
}
.header-cta:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(232,185,74,0.4);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero 首屏 ===== */
.hero-section {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  padding: 140px 0 80px;
  overflow: hidden;
}
.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(6,13,36,0.94) 0%, rgba(11,22,56,0.82) 55%, rgba(21,36,88,0.65) 100%);
}
.hero-section::after {
  content: "";
  position: absolute;
  bottom: -120px;
  right: -80px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(232,185,74,0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 20px;
  border-radius: 50px;
  background: rgba(232,185,74,0.14);
  border: 1px solid rgba(232,185,74,0.4);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-content h1 {
  font-size: 54px;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero-sub {
  font-size: 18px;
  color: rgba(255,255,255,0.78);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.65);
}
.hero-meta i {
  color: var(--accent);
}
.hero-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(12px);
  border-radius: 24px;
  padding: 36px 32px;
  box-shadow: var(--shadow-lg);
}
.countdown-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.countdown-label {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}
.countdown-date {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.1);
  padding: 4px 14px;
  border-radius: 20px;
}
.countdown-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}
.countdown-item {
  text-align: center;
  background: rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 18px 10px;
  border: 1px solid rgba(255,255,255,0.08);
}
.countdown-item .num {
  font-size: 36px;
  font-weight: 900;
  color: #fff;
  line-height: 1;
  display: block;
  font-variant-numeric: tabular-nums;
}
.countdown-item .unit {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  display: block;
  margin-top: 6px;
}
.hero-card > p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  text-align: center;
  margin-bottom: 18px;
}

/* ===== 板块通用 ===== */
.section {
  padding: 90px 0;
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 55px;
}
.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 30px;
  background: rgba(232,185,74,0.12);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.section-head h2 {
  font-size: 38px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== 平台亮点 ===== */
.features-section {
  background: var(--bg-white);
}
.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 30px;
  height: 100%;
  transition: var(--transition);
  text-align: center;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(232,185,74,0.4);
}
.feature-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 22px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(232,185,74,0.18), rgba(232,185,74,0.06));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--accent-dark);
  transition: var(--transition);
}
.feature-card:hover .feature-icon {
  background: var(--accent);
  color: #fff;
  transform: rotate(-6deg) scale(1.05);
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.75;
}

/* ===== 分类入口 ===== */
.categories-section {
  background: var(--bg);
  padding: 90px 0;
}
.category-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.category-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.category-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.category-card:hover .category-img img {
  transform: scale(1.06);
}
.category-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,22,56,0.65), transparent 60%);
}
.category-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.category-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 30px;
  background: rgba(232,185,74,0.14);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 700;
  align-self: flex-start;
  margin-bottom: 12px;
}
.category-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.category-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
}
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-dark);
  transition: var(--transition);
}
.category-link:hover {
  gap: 12px;
  color: var(--accent-dark);
}

/* ===== 最新资讯 ===== */
.latest-section {
  background: var(--bg-white);
  padding: 90px 0;
}
.latest-grid {
  margin-top: 10px;
}
.latest-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  margin-bottom: 24px;
  height: calc(100% - 24px);
  transition: var(--transition);
}
.latest-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(232,185,74,0.4);
  transform: translateY(-4px);
}
.latest-cat {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 30px;
  background: rgba(11,22,56,0.06);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  align-self: flex-start;
  margin-bottom: 14px;
}
.latest-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.latest-card > p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.latest-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.latest-date {
  font-size: 13px;
  color: var(--text-lighter);
}
.read-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.read-more:hover {
  gap: 10px;
}
.empty-tip {
  text-align: center;
  padding: 50px 20px;
  font-size: 16px;
  color: var(--text-light);
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

/* ===== 数据展示 ===== */
.stats-section {
  background: var(--bg-dark);
  position: relative;
  padding: 80px 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.stats-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(11,22,56,0.9);
}
.stats-wrap {
  position: relative;
  z-index: 2;
  gap: 30px 0;
}
.stat-item {
  text-align: center;
  padding: 24px;
}
.stat-num {
  font-size: 48px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1.2;
  display: block;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  margin-top: 8px;
  display: block;
}

/* ===== 流程步骤 ===== */
.process-section {
  background: var(--bg);
  padding: 90px 0;
}
.process-card {
  text-align: center;
  padding: 40px 20px;
  position: relative;
}
.process-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 8px 20px rgba(232,185,74,0.4);
}
.process-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: var(--bg-white);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--primary);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.process-card:hover .process-icon {
  box-shadow: var(--shadow-lg);
  transform: scale(1.08);
  color: var(--accent-dark);
}
.process-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.process-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  max-width: 240px;
  margin: 0 auto;
}
.process-arrow {
  position: absolute;
  top: 90px;
  right: -16px;
  color: var(--accent);
  font-size: 22px;
  z-index: 3;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-white);
  padding: 90px 0;
}
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  border-color: rgba(232,185,74,0.5);
  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);
  transition: var(--transition);
}
.faq-question:hover {
  color: var(--accent-dark);
}
.faq-question i {
  color: var(--accent-dark);
  transition: var(--transition);
  font-size: 14px;
}
.faq-item.active .faq-question i {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 28px 22px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 90px 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  text-align: center;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,22,56,0.92), rgba(21,36,88,0.86));
}
.cta-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: 40px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
}
.cta-content p {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 32px;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary-dark);
  padding: 70px 0 30px;
  color: rgba(255,255,255,0.65);
}
.footer-grid {
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 30px;
}
.footer-logo {
  display: flex;
  align-items: baseline;
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.footer-logo span {
  color: var(--accent);
}
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  max-width: 340px;
  margin-bottom: 20px;
}
.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-links i {
  font-size: 12px;
  color: var(--accent);
  opacity: 0.7;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}
.footer-bottom a {
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}
.footer-bottom a:hover {
  color: var(--accent);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 42px;
  }
  .section {
    padding: 70px 0;
  }
  .section-head h2 {
    font-size: 32px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 4px;
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    box-shadow: 0 16px 32px rgba(0,0,0,0.2);
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .nav-link {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    border-radius: 8px;
  }
  .nav-toggle {
    display: flex;
  }
  .header-cta {
    display: none;
  }
  .hero-section {
    min-height: 100vh;
    padding: 120px 0 60px;
  }
  .hero-content h1 {
    font-size: 34px;
  }
  .hero-sub {
    font-size: 16px;
  }
  .hero-card {
    margin-top: 36px;
    padding: 26px 20px;
  }
  .countdown-item .num {
    font-size: 28px;
  }
  .section {
    padding: 60px 0;
  }
  .section-head h2 {
    font-size: 28px;
  }
  .stat-num {
    font-size: 36px;
  }
  .process-arrow {
    display: none;
  }
  .cta-content h2 {
    font-size: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo {
    font-size: 20px;
  }
  .hero-content h1 {
    font-size: 28px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-meta {
    flex-direction: column;
    gap: 10px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }
  .cta-buttons .btn {
    width: 100%;
  }
}

/* ===== 焦点状态 ===== */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(232,185,74,0.6);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--primary-light);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* roulang page: category1 */
:root {
  --primary: #1a3a8f;
  --primary-dark: #122a6b;
  --primary-light: #2d5ae0;
  --accent: #e8b84b;
  --accent-light: #f5d689;
  --bg-light: #f6f8fd;
  --bg-white: #ffffff;
  --dark: #131a2a;
  --dark-2: #1a233c;
  --text: #2a3450;
  --text-light: #5e6a87;
  --border: #dde3f0;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(20, 40, 80, 0.06);
  --shadow-md: 0 8px 28px rgba(20, 40, 80, 0.10);
  --shadow-lg: 0 18px 48px rgba(20, 40, 80, 0.16);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --spacing-section: 5.5rem;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-white);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}
ul, ol {
  list-style: none;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ===== Header & Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(221, 227, 240, 0.7);
  box-shadow: 0 2px 20px rgba(15, 25, 60, 0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--primary);
  flex-shrink: 0;
}
.logo span {
  color: var(--accent);
  font-weight: 700;
  margin-left: 2px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
}
.nav-link {
  padding: 9px 18px;
  border-radius: 40px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text);
  transition: all var(--transition);
  position: relative;
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(26, 58, 143, 0.06);
}
.nav-link.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 14px rgba(26, 58, 143, 0.3);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 40px;
  box-shadow: 0 6px 18px rgba(26, 58, 143, 0.3);
  transition: all var(--transition);
  flex-shrink: 0;
}
.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(26, 58, 143, 0.4);
  color: #fff;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg-light);
  flex-shrink: 0;
}
.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 7rem 0 5.5rem;
  background: linear-gradient(135deg, rgba(19, 26, 42, 0.88), rgba(26, 58, 143, 0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 184, 75, 0.2), transparent 70%);
  top: -200px;
  right: -100px;
}
.banner-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 18px;
  color: rgba(255, 255, 255, 0.7);
}
.banner-breadcrumb a:hover {
  color: var(--accent);
}
.banner-breadcrumb i {
  font-size: 11px;
}
.page-banner h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  position: relative;
}
.page-banner h1 .highlight {
  color: var(--accent);
}
.page-banner p.subtitle {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  max-width: 650px;
  margin-bottom: 24px;
}
.banner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  position: relative;
}
.banner-tags .tag {
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 30px;
  font-size: 13px;
  backdrop-filter: blur(8px);
}

/* ===== Section Common ===== */
.section {
  padding: var(--spacing-section) 0;
}
.section-alt {
  background: var(--bg-light);
}
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}
.section-overline {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 10px;
  padding: 4px 14px;
  background: rgba(26, 58, 143, 0.08);
  border-radius: 30px;
}
.section-header h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 800;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== Steps Section ===== */
.steps-section {
  position: relative;
  padding: var(--spacing-section) 0;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  position: relative;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 26px;
  text-align: center;
  transition: all var(--transition);
  overflow: hidden;
}
.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}
.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.step-card:hover::before {
  opacity: 1;
}
.step-number {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(26, 58, 143, 0.3);
}
.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.step-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-light);
}
.step-connect {
  position: absolute;
  top: 62px;
  right: -20px;
  color: var(--accent);
  font-size: 14px;
  z-index: 2;
}

/* ===== Prep Section ===== */
.prep-section {
  padding: var(--spacing-section) 0;
}
.prep-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.prep-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.prep-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}
.prep-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(19, 26, 42, 0.4), transparent 60%);
}
.prep-content h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 16px;
}
.prep-content > p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-light);
  margin-bottom: 28px;
}
.prep-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.prep-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.prep-item:hover {
  border-color: var(--primary);
  background: rgba(26, 58, 143, 0.03);
  transform: translateX(4px);
}
.prep-item i {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  box-shadow: 0 4px 12px rgba(26, 58, 143, 0.2);
}
.prep-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.prep-item p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-light);
}

/* ===== Method Section ===== */
.method-section {
  padding: var(--spacing-section) 0;
  background: linear-gradient(180deg, var(--bg-light) 0%, #fff 100%);
  position: relative;
  overflow: hidden;
}
.method-scroll {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  padding: 12px 4px 28px;
  scroll-snap-type: x mandatory;
}
.method-scroll::-webkit-scrollbar {
  height: 6px;
}
.method-scroll::-webkit-scrollbar-track {
  background: var(--border);
  border-radius: 10px;
}
.method-scroll::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 10px;
}
.method-card {
  position: relative;
  flex: 0 0 340px;
  scroll-snap-align: start;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.method-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.method-card-img {
  height: 200px;
  overflow: hidden;
  position: relative;
}
.method-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.method-card:hover .method-card-img img {
  transform: scale(1.05);
}
.method-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent, rgba(19, 26, 42, 0.35));
}
.method-card-body {
  padding: 28px 24px 30px;
}
.method-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  background: rgba(232, 184, 75, 0.15);
  color: #8a6c1c;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.method-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.method-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-light);
  margin-bottom: 16px;
}
.method-card ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.method-card ul li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text);
}
.method-card ul li i {
  color: var(--primary);
  margin-top: 4px;
  font-size: 11px;
}
.method-card .btn-card {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: gap var(--transition);
}
.method-card .btn-card:hover {
  gap: 12px;
  color: var(--primary-dark);
}

/* ===== Notice Section ===== */
.notice-section {
  padding: var(--spacing-section) 0;
  background: var(--dark);
  color: #fff;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  position: relative;
}
.notice-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(19, 26, 42, 0.94), rgba(26, 58, 143, 0.88));
}
.notice-section .container {
  position: relative;
  z-index: 2;
}
.notice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.notice-content h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
}
.notice-content h2 span {
  color: var(--accent);
}
.notice-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 24px;
}
.notice-items {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.notice-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  backdrop-filter: blur(10px);
  transition: all var(--transition);
}
.notice-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateX(4px);
}
.notice-item i {
  font-size: 18px;
  color: var(--accent);
  margin-top: 3px;
  flex-shrink: 0;
}
.notice-item h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}
.notice-item p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
  line-height: 1.6;
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: var(--spacing-section) 0;
}
.faq-grid {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover {
  border-color: var(--primary);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  text-align: left;
  background: transparent;
  gap: 16px;
}
.faq-question i {
  color: var(--primary);
  font-size: 14px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-question i {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  padding: 0 24px;
}
.faq-answer-inner {
  padding-bottom: 22px;
  color: var(--text-light);
  font-size: 14.5px;
  line-height: 1.8;
  border-top: 1px dashed var(--border);
  padding-top: 16px;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 0 0 var(--spacing-section);
}
.cta-box {
  background: linear-gradient(120deg, var(--primary), var(--primary-dark));
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-box::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(232, 184, 75, 0.15);
  top: -120px;
  right: -100px;
}
.cta-box::after {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  border: 2px solid rgba(232, 184, 75, 0.25);
  border-radius: 50%;
  bottom: -60px;
  left: 40px;
}
.cta-box h2 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}
.cta-box p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  margin-bottom: 28px;
  position: relative;
  z-index: 2;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 40px;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}
.btn-accent {
  background: var(--accent);
  color: var(--dark);
  box-shadow: 0 8px 24px rgba(232, 184, 75, 0.4);
}
.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(232, 184, 75, 0.5);
  color: var(--dark);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.6);
}
.btn-outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 0;
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26, 58, 143, 0.3), transparent 70%);
  top: -200px;
  left: -100px;
}
.footer-grid {
  position: relative;
  z-index: 2;
  padding-bottom: 40px;
}
.footer-logo {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  display: inline-block;
}
.footer-logo span {
  color: var(--accent);
}
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 400px;
  margin-bottom: 22px;
}
.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: all var(--transition);
}
.footer-links a i {
  font-size: 11px;
  color: var(--accent);
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  position: relative;
  z-index: 2;
}

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
  :root {
    --spacing-section: 4.5rem;
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .main-nav {
    gap: 2px;
  }
  .nav-link {
    padding: 8px 12px;
    font-size: 13px;
  }
}
@media screen and (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 8px;
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 99;
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .nav-link {
    padding: 12px 18px;
    text-align: left;
  }
  .nav-link.active {
    box-shadow: none;
  }
  .header-cta {
    display: none;
  }
  .page-banner {
    padding: 5rem 0 4rem;
  }
  .steps-grid {
    grid-template-columns: 1fr;
    max-width: 460px;
    margin: 0 auto;
  }
  .step-connect {
    display: none;
  }
  .prep-grid {
    grid-template-columns: 1fr;
  }
  .method-card {
    flex-basis: 280px;
  }
  .notice-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-box {
    padding: 40px 28px;
    border-radius: 18px;
  }
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}
@media screen and (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .page-banner h1 {
    font-size: 28px;
  }
  .page-banner p.subtitle {
    font-size: 15px;
  }
  .section-header p {
    font-size: 14px;
  }
  .method-card {
    flex-basis: 240px;
  }
  .prep-image img {
    height: 280px;
  }
  .notice-item {
    flex-direction: column;
  }
  .cta-box h2 {
    font-size: 24px;
  }
  .cta-box p {
    font-size: 14px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 4px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #1a56db;
  --primary-dark: #173e9d;
  --primary-light: #e8eeff;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --dark: #0f172a;
  --dark-bg: #0b1220;
  --text: #1e293b;
  --text-light: #64748b;
  --bg: #f8faff;
  --white: #ffffff;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(26, 86, 219, 0.15);
  --spacing-sm: 16px;
  --spacing-md: 32px;
  --spacing-lg: 64px;
  --spacing-xl: 96px;
  --container: 1200px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: inline-block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover {
  color: var(--primary-dark);
}
button, input {
  font-family: inherit;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(226,232,240,0.6);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(15,23,42,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo {
  font-size: 24px;
  font-weight: 800;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 4px;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}
.logo span {
  color: var(--primary);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 auto;
}
.nav-link {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  transition: all 0.3s ease;
  position: relative;
}
.nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(26,86,219,0.25);
  transition: all 0.3s ease;
}
.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26,86,219,0.35);
  color: #fff;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 8px;
  transition: background 0.3s ease;
}
.nav-toggle:hover {
  background: var(--primary-light);
}
.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Page Hero */
.category-hero {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #0b1220 0%, #1a2942 100%);
  overflow: hidden;
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.category-hero::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(26,86,219,0.4), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.category-hero .container {
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  color: #e0e7ff;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.hero-badge i {
  color: var(--accent);
}
.category-hero h1 {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.category-hero h1 span {
  color: var(--accent);
}
.category-hero .hero-desc {
  color: rgba(255,255,255,0.75);
  font-size: 18px;
  max-width: 700px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(26,86,219,0.35);
  transition: all 0.3s ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(26,86,219,0.45);
  color: #fff;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: rgba(255,255,255,0.08);
  color: #fff;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.25);
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.5);
  color: #fff;
}
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.12);
}
.stat-item {
  text-align: left;
}
.stat-item .num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.stat-item .num i {
  color: var(--accent);
  font-size: 24px;
  vertical-align: baseline;
  margin-left: 4px;
}
.stat-item .label {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-top: 4px;
}

/* Section Common */
.section {
  padding: var(--spacing-xl) 0;
}
.section-alt {
  background: var(--white);
}
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 16px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
}

/* Steps Section */
.steps-section {
  background: linear-gradient(180deg, var(--bg) 0%, #f0f4ff 100%);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.step-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.step-num {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 20px;
}
.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.step-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}
.step-card .step-tip {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--accent-light);
  border-radius: 8px;
  font-size: 13px;
  color: #92400e;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.step-card .step-tip i {
  margin-top: 3px;
}

/* Guide Info Card */
.info-card {
  background: linear-gradient(135deg, var(--dark-bg), #16213e);
  border-radius: 24px;
  padding: 48px;
  position: relative;
  overflow: hidden;
  margin-top: 32px;
}
.info-card::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(26,86,219,0.4), transparent 70%);
  border-radius: 50%;
}
.info-card .inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}
.info-card h3 {
  font-size: 28px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
}
.info-card p {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 24px;
}
.info-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.info-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  padding: 10px 0;
}
.info-list li i {
  color: var(--accent);
}

/* Tips Cards */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tip-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.tip-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.tip-img {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.tip-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.tip-card:hover .tip-img img {
  transform: scale(1.05);
}
.tip-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(11,18,32,0.6), transparent 50%);
}
.tip-img .tip-tag {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(255,255,255,0.9);
  color: var(--dark);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}
.tip-body {
  padding: 24px;
}
.tip-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
  line-height: 1.4;
}
.tip-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}
.tip-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.tip-link i {
  transition: transform 0.3s ease;
}
.tip-link:hover i {
  transform: translateX(4px);
}

/* Checklist Section */
.checklist-section {
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.check-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  transition: all 0.3s ease;
}
.check-item:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}
.check-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.check-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.check-item p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* FAQ Section */
.faq-section {
  background: var(--bg);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}
.faq-item:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}
.faq-q {
  padding: 22px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: color 0.3s ease;
}
.faq-q i {
  color: var(--primary);
  transition: transform 0.3s ease;
  font-size: 14px;
}
.faq-q.active {
  color: var(--primary);
}
.faq-q.active i {
  transform: rotate(180deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  padding: 0 24px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* CTA Section */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, var(--dark-bg) 0%, #1a2942 100%);
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.2;
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(245,158,11,0.3), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
}
.cta-inner h2 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.cta-inner p {
  color: rgba(255,255,255,0.7);
  font-size: 17px;
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  background: #0b1220;
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
  position: relative;
}
.footer-grid {
  margin-bottom: 40px;
}
.footer-logo {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  display: inline-flex;
  gap: 4px;
  margin-bottom: 16px;
}
.footer-logo span {
  color: #60a5fa;
}
.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
  max-width: 360px;
}
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}
.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-links a i {
  font-size: 12px;
  color: #60a5fa;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 12px;
}

/* Mobile Nav */
@media (max-width: 1024px) {
  .main-nav {
    gap: 4px;
  }
  .nav-link {
    padding: 8px 12px;
    font-size: 14px;
  }
  .header-cta {
    padding: 8px 16px;
    font-size: 13px;
  }
  .category-hero h1 {
    font-size: 36px;
  }
  .steps-grid,
  .tips-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .info-card .inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 30px rgba(0,0,0,0.1);
  }
  .main-nav.open {
    display: flex;
  }
  .nav-link {
    padding: 14px 16px;
    border-radius: 8px;
    font-size: 15px;
  }
  .header-cta {
    display: none;
  }
  .category-hero {
    padding: 130px 0 56px;
  }
  .category-hero h1 {
    font-size: 30px;
  }
  .hero-desc {
    font-size: 16px;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 16px;
  }
  .stat-item .num {
    font-size: 24px;
  }
  .section {
    padding: 64px 0;
  }
  .section-header h2 {
    font-size: 28px;
  }
  .steps-grid,
  .tips-grid,
  .checklist-grid {
    grid-template-columns: 1fr;
  }
  .info-card {
    padding: 28px;
  }
  .info-card h3 {
    font-size: 22px;
  }
  .cta-inner h2 {
    font-size: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .footer-grid .cell {
    margin-bottom: 24px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .category-hero h1 {
    font-size: 26px;
  }
  .hero-badge {
    font-size: 12px;
    padding: 6px 14px;
  }
  .btn-primary, .btn-outline {
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
    font-size: 14px;
  }
  .section-header h2 {
    font-size: 24px;
  }
  .check-item {
    flex-direction: column;
  }
}

@media (max-width: 639px) {
  .info-card .inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* roulang page: article */
:root{
  --primary:#2456e6;
  --primary-dark:#1634a8;
  --accent:#d4a853;
  --accent-light:#f0d9a7;
  --bg:#f5f7fc;
  --surface:#ffffff;
  --text:#1c2833;
  --text-muted:#5f6e80;
  --border:#e3e8f0;
  --radius-lg:22px;
  --radius-md:14px;
  --radius-sm:9px;
  --shadow-sm:0 2px 14px rgba(13,27,62,0.06);
  --shadow-md:0 10px 36px rgba(13,27,62,0.1);
  --shadow-lg:0 18px 52px rgba(13,27,62,0.14);
  --space:96px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,"Noto Sans SC",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,textarea{font-family:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.grid-x{display:flex;flex-flow:row wrap;}
.cell{flex:0 0 auto;width:100%;}
.large-8{width:66.6667%;}
.large-4{width:33.3333%;}
.large-3{width:25%;}
.large-5{width:41.6667%;}
.large-offset-1{margin-left:8.3333%;}
.large-offset-2{margin-left:16.6667%;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  height:72px;
}
.header-inner{
  height:72px;
  display:flex;align-items:center;gap:28px;
  max-width:1200px;margin:0 auto;padding:0 24px;
}
.logo{
  font-size:23px;font-weight:800;color:var(--text);
  letter-spacing:-0.02em;white-space:nowrap;
  display:flex;align-items:baseline;gap:2px;
}
.logo span{color:var(--primary);}
.main-nav{display:flex;gap:6px;margin-left:auto;}
.nav-link{
  padding:9px 16px;border-radius:10px;
  color:var(--text-muted);font-size:14px;font-weight:500;
  transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--primary);background:rgba(36,86,230,.06);}
.nav-link.active{color:var(--primary);background:rgba(36,86,230,.1);font-weight:600;}
.header-cta{
  padding:9px 20px;background:var(--primary);color:#fff;
  border-radius:10px;font-weight:600;font-size:14px;
  transition:transform .2s,box-shadow .2s,background .2s;
  white-space:nowrap;
}
.header-cta:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 6px 22px rgba(36,86,230,.3);}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;background:transparent;border:1px solid var(--border);
  border-radius:10px;cursor:pointer;padding:9px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text);transition:transform .3s,opacity .3s;}

/* ===== Page Banner ===== */
.page-banner{
  position:relative;
  padding:82px 0;
  background:linear-gradient(140deg,rgba(13,27,62,.94) 0%,rgba(36,86,230,.82) 55%,rgba(22,52,168,.9) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.6);
  margin-bottom:22px;flex-wrap:wrap;
}
.breadcrumb a{color:rgba(255,255,255,.82);transition:color .2s;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb i{font-size:11px;color:rgba(255,255,255,.4);}
.banner-badge{
  display:inline-block;padding:5px 16px;border-radius:30px;
  background:var(--accent);color:#1c2833;font-size:12px;font-weight:700;
  letter-spacing:0.06em;margin-bottom:14px;
}
.page-banner h1{
  font-size:40px;line-height:1.22;font-weight:800;
  margin:0 0 18px;max-width:800px;letter-spacing:-0.02em;
}
.banner-meta{
  display:flex;gap:22px;flex-wrap:wrap;
  color:rgba(255,255,255,.78);font-size:13px;
}
.banner-meta i{margin-right:6px;color:var(--accent-light);}

/* ===== Article Section ===== */
.article-section{padding:64px 0 24px;}
.article-card{
  background:var(--surface);border-radius:var(--radius-lg);
  border:1px solid var(--border);box-shadow:var(--shadow-sm);
  padding:44px 48px;margin-bottom:32px;
}
.article-meta{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  padding-bottom:20px;margin-bottom:28px;
  border-bottom:2px solid var(--border);
}
.article-meta .meta-item{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--text-muted);
  background:rgba(36,86,230,.05);
  padding:5px 13px;border-radius:20px;
}
.article-body{font-size:16.5px;line-height:1.95;color:#2d3d4f;}
.article-body h2{
  font-size:25px;font-weight:800;color:var(--text);
  margin:36px 0 14px;line-height:1.3;
}
.article-body h3{
  font-size:20px;font-weight:700;color:var(--text);
  margin:28px 0 12px;
}
.article-body h4{font-size:17px;font-weight:700;color:var(--text);margin:22px 0 10px;}
.article-body p{margin-bottom:16px;}
.article-body img{border-radius:var(--radius-md);margin:20px 0;}
.article-body ul,.article-body ol{margin:14px 0 18px 4px;padding-left:0;list-style:none;}
.article-body ul li{
  position:relative;padding-left:26px;margin-bottom:10px;
}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:11px;
  width:8px;height:8px;border-radius:2px;background:var(--primary);
}
.article-body ol{list-style:decimal inside;counter-reset:list;}
.article-body ol li{padding-left:6px;margin-bottom:10px;}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(36,86,230,.3);transition:border-color .2s;}
.article-body a:hover{border-bottom-color:var(--primary);}
.article-body blockquote{
  border-left:4px solid var(--primary);background:rgba(36,86,230,.05);
  padding:16px 22px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  margin:20px 0;color:var(--text-muted);
}
.empty-article{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:72px 40px;text-align:center;
}
.empty-article i{
  font-size:56px;color:#c3cbd8;margin-bottom:18px;display:block;
}
.empty-article h2{font-size:26px;font-weight:800;margin-bottom:8px;}
.empty-article p{color:var(--text-muted);margin-bottom:24px;}

/* ===== Sidebar ===== */
.side-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
  padding:30px;margin-bottom:24px;
}
.side-card h3{
  font-size:17px;font-weight:700;color:var(--text);
  padding-bottom:12px;margin-bottom:8px;border-bottom:2px solid var(--border);
  display:flex;align-items:center;gap:8px;
}
.side-card h3 i{color:var(--primary);font-size:15px;}
.sidebar-nav{display:flex;flex-direction:column;}
.sidebar-nav a{
  display:flex;align-items:center;gap:10px;
  padding:13px 4px;color:var(--text-muted);
  font-size:14px;border-bottom:1px solid var(--border);
  transition:color .2s,transform .2s;
}
.sidebar-nav a:last-child{border-bottom:none;}
.sidebar-nav a:hover{color:var(--primary);transform:translateX(4px);}
.sidebar-nav a i{width:20px;text-align:center;color:var(--primary);}
.side-card-cta{background:linear-gradient(150deg,#0d1b3e,#2456e6);border:none;color:#fff;}
.side-card-cta h3{color:#fff;border-bottom-color:rgba(255,255,255,.2);}
.side-card-cta p{font-size:13px;color:rgba(255,255,255,.75);margin-bottom:18px;}
.btn-block{display:block;text-align:center;}

/* ===== Buttons ===== */
.btn-primary,.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:12px;font-weight:600;
  font-size:14px;border:none;cursor:pointer;
  transition:transform .2s,box-shadow .2s,background .2s;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 26px rgba(36,86,230,.32);}
.btn-light{background:#fff;color:var(--primary-dark);}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,0,0,.22);}

/* ===== Tips Section ===== */
.tips-section{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:80px 0;}
.section-head{text-align:center;max-width:680px;margin:0 auto 46px;}
.section-tag{
  display:inline-block;padding:5px 16px;border-radius:30px;
  background:rgba(36,86,230,.08);color:var(--primary);
  font-size:12px;font-weight:700;letter-spacing:0.06em;margin-bottom:14px;
}
.section-head h2{font-size:32px;font-weight:800;line-height:1.25;margin-bottom:12px;}
.section-head p{color:var(--text-muted);font-size:15px;line-height:1.6;}
.tips-card{
  background:var(--bg);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:34px 26px;height:100%;
  transition:transform .25s,box-shadow .25s;
}
.tips-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(36,86,230,.25);}
.tips-icon{
  width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(36,86,230,.1);color:var(--primary);
  font-size:22px;margin-bottom:18px;
}
.tips-card h3{font-size:17px;font-weight:700;margin-bottom:10px;line-height:1.4;}
.tips-card p{font-size:13.5px;color:var(--text-muted);line-height:1.7;}

/* ===== Related Section ===== */
.related-section{padding:80px 0;background:var(--bg);}
.related-scroll{
  display:flex;gap:22px;overflow-x:auto;
  padding:20px 4px 30px;scroll-snap-type:x mandatory;
}
.related-scroll::-webkit-scrollbar{height:8px;}
.related-scroll::-webkit-scrollbar-thumb{background:#d0d6e2;border-radius:10px;}
.related-card{
  flex:0 0 300px;background:var(--surface);border-radius:var(--radius-lg);
  overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-sm);
  scroll-snap-align:start;transition:transform .25s,box-shadow .25s;
}
.related-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.related-card .thumb{position:relative;height:158px;overflow:hidden;}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.related-card:hover .thumb img{transform:scale(1.05);}
.related-card .thumb .cat-label{
  position:absolute;top:12px;left:12px;
  background:rgba(13,27,62,.82);color:#fff;
  font-size:11px;padding:4px 12px;border-radius:20px;font-weight:600;
}
.related-body{padding:20px 22px 24px;}
.related-body h3{font-size:15px;font-weight:700;line-height:1.45;margin-bottom:8px;color:var(--text);}
.related-body p{font-size:12.5px;color:var(--text-muted);line-height:1.6;}

/* ===== FAQ Section ===== */
.faq-section{padding:80px 0;background:var(--surface);}
.faq-list{
  background:var(--bg);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);
  padding:0;
}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:none;}
.faq-question{
  width:100%;padding:22px 28px;display:flex;justify-content:space-between;align-items:center;
  background:transparent;border:none;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--text);
  text-align:left;transition:background .2s;
}
.faq-question:hover{background:rgba(36,86,230,.04);}
.faq-icon{font-size:18px;color:var(--primary);transition:transform .3s;flex-shrink:0;}
.faq-answer{
  max-height:0;overflow:hidden;padding:0 28px;
  color:var(--text-muted);font-size:14px;line-height:1.75;
  transition:max-height .35s ease,padding .35s ease;
}
.faq-item.open .faq-answer{max-height:320px;padding-bottom:22px;}
.faq-item.open .faq-question{color:var(--primary);}
.faq-item.open .faq-icon{transform:rotate(45deg);}

/* ===== CTA ===== */
.cta-section{padding:80px 0;background:var(--bg);}
.cta-box{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0d1b3e 0%,#1a3eaa 55%,#2456e6 100%);
  border-radius:26px;padding:64px 48px;text-align:center;color:#fff;
  box-shadow:0 20px 60px rgba(13,27,62,.35);
}
.cta-box::before{
  content:"";position:absolute;top:-60%;right:-12%;
  width:460px;height:460px;border-radius:50%;
  background:rgba(255,255,255,.06);
}
.cta-box::after{
  content:"";position:absolute;bottom:-70%;left:-8%;
  width:360px;height:360px;border-radius:50%;
  background:rgba(212,168,83,.12);
}
.cta-box>*{position:relative;z-index:1;}
.cta-box h2{font-size:30px;font-weight:800;margin-bottom:12px;}
.cta-box p{color:rgba(255,255,255,.8);font-size:15px;margin-bottom:26px;}
.cta-box .btn-light{margin:0 auto;}

/* ===== Footer ===== */
.site-footer{background:#0d1b3e;color:rgba(255,255,255,.72);padding:60px 0 0;}
.footer-grid{border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:44px;}
.footer-logo{font-size:23px;font-weight:800;color:#fff;display:inline-block;margin-bottom:14px;}
.footer-logo span{color:var(--accent);}
.footer-desc{font-size:13.5px;line-height:1.8;max-width:400px;color:rgba(255,255,255,.6);}
.footer-title{
  font-size:16px;color:#fff;font-weight:700;margin-bottom:16px;
  padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{
  color:rgba(255,255,255,.62);font-size:13.5px;
  display:flex;align-items:center;gap:8px;transition:color .2s,transform .2s;
}
.footer-links a:hover{color:#fff;transform:translateX(3px);}
.footer-links i{color:var(--accent);font-size:11px;}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;
  padding:22px 0;font-size:12.5px;color:rgba(255,255,255,.4);
}

/* ===== Responsive ===== */
@media(max-width:1024px){
  :root{--space:72px;}
  .page-banner h1{font-size:34px;}
  .article-card{padding:36px;}
  .cta-box{padding:50px 36px;}
}
@media(max-width:900px){
  .main-nav{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;gap:4px;
    background:#fff;padding:18px 24px;
    border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-md);
    display:none;margin-left:0;max-height:calc(100vh-72px);overflow-y:auto;
  }
  .main-nav.open{display:flex;}
  .nav-toggle{display:flex;margin-left:auto;}
  .header-cta{display:none;}
  .large-3,.large-4,.large-5,.large-8{width:100%;}
  .large-offset-1,.large-offset-2{margin-left:0;}
  .article-card{padding:28px;}
  .page-banner{padding:60px 0;}
  .page-banner h1{font-size:29px;}
  .related-card{flex:0 0 270px;}
}
@media(max-width:640px){
  .page-banner{padding:46px 0;}
  .page-banner h1{font-size:24px;}
  .breadcrumb{font-size:12px;}
  .article-card{padding:20px;}
  .article-body{font-size:15px;line-height:1.85;}
  .tips-section,.related-section,.faq-section,.cta-section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .cta-box{padding:40px 24px;}
  .cta-box h2{font-size:24px;}
  .faq-question{font-size:14px;padding:18px 18px;}
  .faq-answer{padding:0 18px;}
  .faq-item.open .faq-answer{padding-bottom:16px;}
  .footer-bottom{justify-content:center;text-align:center;}
  .footer-grid .cell{margin-bottom:28px;}
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d1b2e;
            --primary-light: #1b2d4a;
            --accent: #d4a853;
            --accent-light: #f0d395;
            --accent-dark: #b89143;
            --bg-light: #f6f8fc;
            --bg-white: #ffffff;
            --text-dark: #141e2b;
            --text-body: #3d4a5c;
            --text-muted: #7a8798;
            --border: #e5eaf1;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 4px 14px rgba(13, 27, 46, .06);
            --shadow-md: 0 10px 36px rgba(13, 27, 46, .10);
            --shadow-lg: 0 18px 54px rgba(13, 27, 46, .14);
            --transition: all .28s cubic-bezier(.22, .61, .36, 1);
            --font-base: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-body);
            background: var(--bg-light);
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 头部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(228, 232, 238, .6);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
            background: rgba(255, 255, 255, .97);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }

        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            white-space: nowrap;
            line-height: 1;
        }

        .logo span {
            color: var(--accent);
            font-weight: 700;
            margin-left: 1px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: 32px;
            flex: 1;
        }

        .nav-link {
            padding: 9px 18px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(212, 168, 83, .10);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(212, 168, 83, .18);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 22px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 6px 18px rgba(13, 27, 46, .25);
            transition: var(--transition);
            white-space: nowrap;
        }

        .header-cta:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(13, 27, 46, .28);
            color: #fff;
        }

        .header-cta:active {
            transform: translateY(0);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: transparent;
            cursor: pointer;
            gap: 5px;
            z-index: 1001;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(13, 27, 46, .06);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 页面 Hero / Banner ===== */
        .page-hero {
            position: relative;
            margin-top: 72px;
            padding: 96px 0 110px;
            background-image: linear-gradient(135deg, rgba(7, 14, 24, .88) 10%, rgba(13, 27, 46, .78) 45%, rgba(28, 45, 68, .74) 80%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 560px;
            height: 560px;
            background: radial-gradient(circle, rgba(212, 168, 83, .14) 0%, transparent 68%);
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 80px;
            background: linear-gradient(transparent, rgba(246, 248, 252, 1));
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 168, 83, .16);
            border: 1px solid rgba(212, 168, 83, .38);
            padding: 6px 16px;
            border-radius: 30px;
            color: var(--accent-light);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 24px;
            animation: fadeSlideUp .6s ease both;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .page-hero h1 {
            font-size: 42px;
            line-height: 1.25;
            color: #fff;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 18px;
            animation: fadeSlideUp .65s .08s ease both;
        }

        .page-hero h1 span {
            color: var(--accent);
        }

        .page-hero .hero-desc {
            font-size: 17px;
            line-height: 1.75;
            color: rgba(235, 240, 248, .86);
            margin-bottom: 28px;
            animation: fadeSlideUp .65s .16s ease both;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            animation: fadeSlideUp .65s .24s ease both;
        }

        .hero-meta .hero-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(235, 240, 248, .72);
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .10);
            padding: 7px 16px;
            border-radius: 30px;
        }

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

        @keyframes fadeSlideUp {
            from {
                opacity: 0;
                transform: translateY(22px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 90px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-dark);
            background: rgba(212, 168, 83, .12);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .section-head .section-tag i {
            font-size: 12px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-title span {
            color: var(--accent-dark);
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.72;
        }

        /* ===== 帮助主题轮播卡片 ===== */
        .topic-scroll {
            margin-top: 8px;
            overflow-x: auto;
            padding-bottom: 18px;
            scrollbar-width: thin;
            scrollbar-color: var(--accent) rgba(13, 27, 46, .08);
        }

        .topic-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .topic-scroll::-webkit-scrollbar-thumb {
            background: linear-gradient(90deg, var(--accent), var(--accent-dark));
            border-radius: 10px;
        }

        .topic-scroll::-webkit-scrollbar-track {
            background: rgba(13, 27, 46, .06);
            border-radius: 10px;
        }

        .topic-track {
            display: grid;
            grid-auto-flow: column;
            grid-auto-columns: minmax(270px, 300px);
            gap: 24px;
            padding: 8px 4px;
            margin: 0 auto;
            width: fit-content;
        }

        .topic-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }

        .topic-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: rgba(212, 168, 83, .4);
        }

        .topic-card .card-img {
            position: relative;
            height: 170px;
            overflow: hidden;
        }

        .topic-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

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

        .topic-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(10, 18, 30, .28));
        }

        .topic-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 20px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .12);
        }

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

        .topic-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .topic-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
        }

        .card-link i {
            font-size: 12px;
            transition: transform .2s ease;
        }

        .card-link:hover {
            color: var(--primary);
        }

        .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 操作指南 ===== */
        .guide-section {
            background: var(--primary);
            background-image: linear-gradient(120deg, rgba(6, 12, 22, .94) 0%, rgba(13, 27, 46, .96) 55%, rgba(22, 40, 62, .9) 100%), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .guide-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(212, 168, 83, .12), transparent 70%);
        }

        .guide-section .section-title {
            color: #fff;
        }

        .guide-section .section-desc {
            color: rgba(235, 240, 248, .78);
        }

        .guide-section .section-tag {
            background: rgba(212, 168, 83, .14);
            color: var(--accent-light);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 24px;
            position: relative;
            z-index: 2;
        }

        .step-item {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .10);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            transition: var(--transition);
            position: relative;
        }

        .step-item:hover {
            background: rgba(255, 255, 255, .09);
            border-color: rgba(212, 168, 83, .38);
            transform: translateY(-6px);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 18px;
            box-shadow: 0 8px 20px rgba(212, 168, 83, .25);
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .step-item p {
            font-size: 14px;
            color: rgba(235, 240, 248, .72);
            line-height: 1.6;
        }

        /* ===== 数据统计 ===== */
        .stats-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 44px 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
            z-index: 3;
            margin-top: -36px;
        }

        .stat-card {
            text-align: center;
            padding: 12px 10px;
            border-right: 1px solid var(--border);
        }

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

        .stat-card .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
            font-variant-numeric: tabular-nums;
        }

        .stat-card .stat-num em {
            font-style: normal;
            font-size: 20px;
            color: var(--accent-dark);
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== 问题排查 ===== */
        .trouble-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .trouble-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 30px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .trouble-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent), var(--accent-dark));
            opacity: 0;
            transition: opacity .3s ease;
        }

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

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

        .trouble-card .trouble-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(212, 168, 83, .12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent-dark);
            margin-bottom: 18px;
        }

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

        .trouble-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 16px;
        }

        .trouble-card .trouble-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .trouble-card .trouble-more:hover {
            color: var(--primary);
        }

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

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

        .faq-item:hover {
            border-color: rgba(212, 168, 83, .35);
            box-shadow: var(--shadow-md);
        }

        .faq-item summary {
            padding: 22px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
        }

        .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: 13px;
            color: var(--accent-dark);
            transition: transform .3s ease;
            flex-shrink: 0;
        }

        .faq-item[open] summary {
            border-bottom: 1px solid var(--border);
        }

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

        .faq-content {
            padding: 18px 26px 24px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-box {
            position: relative;
            background-image: linear-gradient(120deg, rgba(6, 12, 22, .92), rgba(13, 27, 46, .88)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-radius: 24px;
            padding: 54px 44px;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            text-align: center;
            color: #fff;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -10%;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(212, 168, 83, .18), transparent 70%);
        }

        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }

        .cta-box h2 span {
            color: var(--accent);
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(235, 240, 248, .8);
            max-width: 600px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 2;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            box-shadow: 0 8px 22px rgba(212, 168, 83, .32);
        }

        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(212, 168, 83, .38);
            color: var(--primary);
        }

        .btn-accent:active {
            transform: translateY(-1px);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .4);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(235, 240, 248, .7);
            margin-top: 0;
            padding: 70px 0 0;
            position: relative;
            overflow: hidden;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: -60%;
            right: 10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(212, 168, 83, .1), transparent 70%);
            pointer-events: none;
        }

        .footer-grid {
            padding-bottom: 44px;
            position: relative;
            z-index: 2;
        }

        .footer-logo {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }

        .footer-logo span {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(235, 240, 248, .65);
            max-width: 380px;
        }

        .footer-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(235, 240, 248, .68);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }

        .footer-links a i {
            font-size: 12px;
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 22px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(235, 240, 248, .5);
            position: relative;
            z-index: 2;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .page-hero {
                padding: 74px 0 90px;
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .section {
                padding: 70px 0;
            }
            .section-title {
                font-size: 29px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .stats-wrap {
                grid-template-columns: repeat(2, 1fr);
                padding: 32px;
                gap: 18px;
            }
            .stat-card {
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding-bottom: 18px;
            }
            .stat-card:nth-last-child(-n+2) {
                border-bottom: none;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .main-nav {
                position: fixed;
                top: 0;
                right: -320px;
                width: 300px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                justify-content: flex-start;
                gap: 8px;
                padding: 88px 24px 30px;
                margin: 0;
                box-shadow: -10px 0 40px rgba(13, 27, 46, .16);
                transition: right .38s cubic-bezier(.22, .61, .36, 1);
                z-index: 1000;
            }
            .main-nav.open {
                right: 0;
            }
            .nav-link {
                width: 100%;
                text-align: left;
                padding: 13px 18px;
                font-size: 16px;
                border-radius: 12px;
                flex: none;
            }
            .nav-link.active::after {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .page-hero {
                margin-top: 64px;
                padding: 60px 0 78px;
            }
            .page-hero h1 {
                font-size: 28px;
                line-height: 1.35;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-meta {
                gap: 10px;
            }
            .section {
                padding: 58px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .topic-track {
                grid-auto-columns: minmax(240px, 270px);
                gap: 16px;
            }
            .trouble-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .cta-box {
                padding: 36px 24px;
                border-radius: 18px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .footer-grid {
                gap: 30px;
            }
            .footer-links a:hover {
                transform: none;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .stats-wrap {
                grid-template-columns: 1fr;
                margin-top: 10px;
                border-radius: 14px;
                padding: 26px;
            }
            .stat-card {
                border-bottom: 1px solid var(--border);
                padding-bottom: 16px;
            }
            .stat-card:last-child {
                border-bottom: none;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .page-hero {
                padding: 48px 0 60px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 14px;
                line-height: 1.65;
            }
            .hero-meta-item {
                font-size: 12px !important;
                padding: 5px 12px !important;
            }
            .section {
                padding: 46px 0;
            }
            .section-title {
                font-size: 23px;
                line-height: 1.35;
            }
            .section-desc {
                font-size: 14px;
            }
            .topic-track {
                grid-auto-columns: 230px;
            }
            .step-item {
                padding: 22px 18px;
            }
            .faq-item summary {
                padding: 18px 18px;
                font-size: 14px;
            }
            .faq-content {
                padding: 14px 18px 18px;
                font-size: 14px;
            }
            .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

        /* ===== 图片装饰 ===== */
        .img-elevated {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }