/* roulang page: index */
:root {
  --primary: #0E8FC2;
  --primary-dark: #0A6C94;
  --primary-light: #EAF6FB;
  --primary-lighter: #F4FAFC;
  --accent: #F59E0B;
  --accent-hover: #D18206;
  --accent-light: #FEF3E2;
  --text: #1E293B;
  --text-secondary: #5B6B7C;
  --text-muted: #94A3B8;
  --border: #E4E7EB;
  --bg: #F7F9FA;
  --white: #FFFFFF;
  --success: #10B981;
  --radius: 14px;
  --radius-sm: 10px;
  --radius-btn: 10px;
  --shadow: 0 4px 16px rgba(15, 23, 42, .05);
  --shadow-hover: 0 8px 28px rgba(15, 23, 42, .09);
  --transition: .25s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Roboto", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--primary-dark);
}

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

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

/* ─── Header / Nav ─── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 72px;
  background: var(--white);
  border-bottom: 1px solid #E8ECF0;
  box-shadow: 0 2px 8px rgba(15, 23, 42, .04);
}

.site-header-inner {
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 30px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 8px;
  color: #fff;
  font-size: 16px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: .2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: 8px;
}

.nav-link {
  font-size: 15px;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 0;
  position: relative;
  transition: color var(--transition);
  line-height: 1.4;
}

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

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}

.header-search {
  position: relative;
}

.header-search input {
  width: 200px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0 14px 0 36px;
  font-size: 13px;
  background: var(--bg);
  transition: all var(--transition);
  color: var(--text);
}

.header-search input:focus {
  border-color: var(--primary);
  outline: 3px solid rgba(14, 143, 194, .15);
  background: #fff;
}

.header-search .search-icon {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 13px;
  pointer-events: none;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.header-cta:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 14px rgba(245, 158, 11, .35);
  transform: translateY(-1px);
}

.header-cta:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(245, 158, 11, .3);
}

.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .3s ease;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(15, 23, 42, .08);
  z-index: 999;
  padding: 16px 24px 24px;
}

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

.mobile-nav-list {
  list-style: none;
}

.mobile-nav-list li {
  border-bottom: 1px solid #F0F2F4;
}

.mobile-nav-list li:last-child {
  border-bottom: none;
}

.mobile-nav-list a {
  display: block;
  padding: 14px 8px;
  font-size: 15px;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.mobile-nav-list a.active {
  color: var(--primary);
}

.mobile-nav-cta {
  margin-top: 16px;
  width: 100%;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 6px 20px rgba(245, 158, 11, .35);
  transform: translateY(-1px);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(245, 158, 11, .3);
}

.btn-secondary {
  background: #fff;
  border: 1px solid #CBD5DD;
  color: var(--text-secondary);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-lighter);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}

/* ─── Sections ─── */
.section {
  padding: 80px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head h2 {
  font-size: 28px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

.section-head p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ─── Hero ─── */
.hero-section {
  background: linear-gradient(135deg, #FFFFFF 0%, #EAF6FB 100%);
  padding: 72px 0;
  min-height: 560px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: flex;
  align-items: center;
  gap: 56px;
}

.hero-content {
  flex: 0 0 55%;
}

.hero-visual {
  flex: 1;
  min-height: 420px;
  border-radius: 20px;
  background-size: cover;
  background-position: center;
  position: relative;
  box-shadow: var(--shadow-hover);
  overflow: hidden;
}

.hero-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(255, 255, 255, .35), transparent 60%);
  z-index: 1;
}

.promo-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-light);
  color: var(--accent-hover);
  border: 1px dashed rgba(245, 158, 11, .6);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: .3px;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.hero-benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.benefit-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text);
  background: rgba(255, 255, 255, .85);
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  box-shadow: 0 2px 6px rgba(15, 23, 42, .03);
}

.benefit-item i {
  color: var(--primary);
  font-size: 13px;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-trust-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 12px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(228, 231, 235, .8);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-dark);
  font-family: var(--font-num);
  line-height: 1.2;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* ─── Tier Plans ─── */
.tier-section {
  background: var(--white);
  padding: 80px 0;
}

.tier-grid {
  display: flex;
  align-items: stretch;
  gap: 24px;
}

.tier-card {
  flex: 1;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.tier-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: #CBD5DD;
}

.tier-card.recommended {
  border: 2px solid var(--accent);
  box-shadow: 0 10px 30px rgba(245, 158, 11, .12);
}

.recommend-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 18px;
  border-radius: 999px;
  letter-spacing: 1px;
  box-shadow: 0 4px 10px rgba(245, 158, 11, .3);
}

.tier-head {
  text-align: center;
  margin-bottom: 24px;
}

.tier-head h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.tier-head p {
  font-size: 14px;
  color: var(--text-secondary);
}

.tier-features {
  flex: 1;
  margin-bottom: 24px;
}

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

.tier-features li {
  padding: 8px 0 8px 26px;
  position: relative;
  font-size: 14px;
  color: var(--text);
  border-bottom: 1px dashed #EDF0F2;
}

.tier-features li:last-child {
  border-bottom: none;
}

.tier-features li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 12px;
  color: var(--success);
  position: absolute;
  left: 0;
  top: 9px;
}

.tier-price {
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  font-family: var(--font-num);
  margin-bottom: 16px;
}

.tier-price small {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
}

.tier-card .btn {
  width: 100%;
}

/* ─── Compare Table ─── */
.compare-section {
  background: var(--bg);
  padding: 80px 0;
}

.compare-table-wrap {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.compare-table th,
.compare-table td {
  padding: 16px 20px;
  text-align: center;
  font-size: 14px;
  border-bottom: 1px solid #F0F2F4;
}

.compare-table th {
  font-weight: 600;
  color: var(--text);
  background: var(--primary-lighter);
  font-size: 15px;
}

.compare-table th:first-child,
.compare-table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--text-secondary);
  background: #FAFCFF;
  min-width: 130px;
}

.compare-table tr:last-child th,
.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-table .highlight-col {
  background: #FFF9EF;
  position: relative;
}

.compare-table .highlight-col::after {
  content: '推荐';
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 999px;
}

.compare-table .plan-price {
  font-family: var(--font-num);
  font-weight: 700;
  color: var(--primary-dark);
}

.compare-mobile-cards {
  display: none;
}

/* ─── Limited Time ─── */
.limited-time-section {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 72px 0;
  overflow: hidden;
}

.limited-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(10, 108, 148, .95) 0%, rgba(14, 143, 194, .88) 100%);
}

.limited-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 48px;
}

.limited-info {
  flex: 1.2;
}

.limited-info h2 {
  font-size: 28px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.3;
}

.limited-info p {
  font-size: 14px;
  color: rgba(255, 255, 255, .85);
  line-height: 1.6;
}

.countdown-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
  justify-content: center;
}

.countdown-item {
  text-align: center;
}

.countdown-num {
  background: #fff;
  border-radius: 12px;
  min-width: 68px;
  padding: 14px 10px;
  font-size: 30px;
  font-weight: 700;
  font-family: var(--font-num);
  color: var(--primary-dark);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .12);
  line-height: 1.1;
  display: block;
}

.countdown-label {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, .8);
  margin-top: 8px;
  letter-spacing: 1px;
}

.countdown-sep {
  font-size: 24px;
  color: rgba(255, 255, 255, .6);
  font-weight: 700;
}

.limited-cta {
  flex: .8;
  text-align: center;
}

.limited-cta .btn {
  min-width: 160px;
  height: 50px;
  font-size: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
}

.limited-cta .btn:hover {
  transform: translateY(-2px);
}

/* ─── Latest News ─── */
.news-section {
  background: var(--white);
  padding: 80px 0;
}

.news-layout {
  display: flex;
  gap: 32px;
}

.news-featured {
  flex: 0 0 40%;
}

.news-list-area {
  flex: 1;
}

.featured-news-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  text-decoration: none;
  color: var(--text);
}

.featured-news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  color: var(--text);
  border-color: #CBD5DD;
}

.featured-news-media {
  position: relative;
  padding-top: 62%;
  overflow: hidden;
}

.featured-news-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, .92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, .1);
}

.featured-news-content {
  padding: 20px;
}

.featured-news-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.featured-news-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.featured-news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 12px;
  border-top: 1px solid #F0F2F4;
}

.featured-news-meta .news-cat-name {
  color: var(--primary);
  font-weight: 500;
}

.news-list {
  display: flex;
  flex-direction: column;
}

.news-list-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 4px;
  border-bottom: 1px solid #E8ECF0;
  text-decoration: none;
  transition: background var(--transition);
}

.news-list-item:hover {
  background: var(--primary-lighter);
}

.news-list-item:last-child {
  border-bottom: none;
}

.news-list-cat {
  flex-shrink: 0;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 999px;
  max-width: 88px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-list-title {
  flex: 1;
  font-size: 15px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color var(--transition);
}

.news-list-item:hover .news-list-title {
  color: var(--primary);
}

.news-list-date {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  font-family: var(--font-num);
}

.news-list-arrow {
  color: var(--text-muted);
  font-size: 13px;
  transition: all var(--transition);
}

.news-list-item:hover .news-list-arrow {
  color: var(--primary);
  transform: translateX(3px);
}

.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-muted);
  font-size: 14px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

.empty-state .empty-icon {
  font-size: 40px;
  color: var(--border);
  margin-bottom: 12px;
}

/* ─── FAQ ─── */
.faq-section {
  background: var(--bg);
  padding: 80px 0;
}

.faq-layout {
  display: flex;
  gap: 56px;
  align-items: flex-start;
}

.faq-intro {
  flex: 0 0 32%;
  position: sticky;
  top: 100px;
}

.faq-intro h2 {
  font-size: 28px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 14px;
}

.faq-intro p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.faq-contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--primary-dark);
  font-weight: 500;
}

.faq-accordion {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0;
  transition: all var(--transition);
  overflow: hidden;
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(14, 143, 194, .08);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  transition: color var(--transition);
}

.faq-item.active .faq-question {
  color: var(--primary);
}

.faq-icon {
  font-size: 16px;
  color: var(--text-muted);
  transition: transform .3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  border-top: 1px solid #F0F2F4;
  padding-top: 16px;
  margin: 0;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ─── Contact Form ─── */
.contact-section {
  background: var(--white);
  padding: 80px 0;
}

.contact-layout {
  display: flex;
  gap: 48px;
  align-items: stretch;
}

.contact-info-panel {
  flex: 0 0 38%;
  background: linear-gradient(135deg, var(--primary-lighter) 0%, var(--primary-light) 100%);
  border-radius: var(--radius);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.contact-info-panel::after {
  content: '';
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 140px;
  height: 140px;
  background: rgba(14, 143, 194, .08);
  border-radius: 50%;
}

.contact-info-panel h2 {
  font-size: 26px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.3;
}

.contact-info-panel > p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

.contact-detail-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-detail-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail-text h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.contact-detail-text p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-info-panel .contact-note {
  position: relative;
  z-index: 1;
  font-size: 13px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, .8);
  border-radius: 10px;
  padding: 14px 18px;
}

.contact-form-panel {
  flex: 1;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.form-control {
  display: block;
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border: 1px solid #CBD5DD;
  border-radius: 8px;
  background: #F8FAFB;
  font-size: 14px;
  color: var(--text);
  transition: all var(--transition);
}

.form-control:focus {
  border-color: var(--primary);
  outline: 3px solid rgba(14, 143, 194, .12);
  background: #fff;
}

.form-control::placeholder {
  color: var(--text-muted);
}

select.form-control {
  appearance: auto;
  background-image: none;
}

textarea.form-control {
  height: 110px;
  padding: 12px 14px;
  resize: vertical;
  line-height: 1.5;
}

.form-row {
  display: flex;
  gap: 20px;
}

.form-row .form-group {
  flex: 1;
}

.form-submit {
  margin-top: 8px;
}

.form-privacy {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 14px;
  line-height: 1.6;
}

/* ─── Footer ─── */
.site-footer {
  background: #16283A;
  color: #A7B8C4;
  padding: 64px 0 0;
}

.footer-grid {
  display: flex;
  gap: 56px;
  padding-bottom: 48px;
}

.footer-col {
  flex: 1;
}

.footer-col:first-child {
  flex: 1.4;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo-icon {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 7px;
  color: #fff;
  font-size: 14px;
}

.footer-logo-text {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
}

.footer-col p {
  font-size: 13px;
  line-height: 1.7;
  color: #A7B8C4;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, .1);
  color: #A7B8C4;
  font-size: 14px;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: #A7B8C4;
  font-size: 13px;
  text-decoration: none;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #fff;
}

.footer-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: #A7B8C4;
  line-height: 1.5;
}

.footer-contact-list i {
  width: 18px;
  color: var(--primary);
  font-size: 14px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
}

.footer-bottom-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: #7E94A5;
}

.footer-bottom-inner a {
  color: #7E94A5;
}

.footer-bottom-inner a:hover {
  color: #fff;
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .main-nav {
    gap: 20px;
  }

  .header-search input {
    width: 160px;
  }

  .hero-grid {
    gap: 32px;
  }

  .hero-title {
    font-size: 36px;
  }

  .hero-visual {
    min-height: 350px;
  }

  .limited-content {
    flex-wrap: wrap;
    gap: 24px;
  }

  .limited-info {
    flex: 1 0 100%;
    text-align: center;
  }

  .countdown-wrap {
    flex: 1 0 100%;
  }

  .limited-cta {
    flex: 1 0 100%;
  }

  .news-layout {
    flex-direction: column;
  }

  .news-featured {
    flex: none;
  }

  .faq-layout {
    flex-direction: column;
    gap: 32px;
  }

  .faq-intro {
    flex: none;
    position: static;
  }

  .contact-layout {
    flex-direction: column;
  }

  .contact-info-panel,
  .contact-form-panel {
    flex: none;
  }
}

@media (max-width: 640px) {
  .site-header-inner {
    padding: 0 16px;
    gap: 14px;
  }

  .logo-text {
    font-size: 17px;
  }

  .main-nav {
    display: none;
  }

  .header-search {
    display: none;
  }

  .header-cta {
    padding: 0 14px;
    font-size: 13px;
    height: 36px;
  }

  .hamburger {
    display: flex;
  }

  .section {
    padding: 48px 0;
  }

  .hero-section {
    padding: 48px 0;
    min-height: auto;
  }

  .hero-grid {
    flex-direction: column;
    gap: 32px;
  }

  .hero-content {
    flex: none;
    text-align: center;
  }

  .hero-benefits {
    justify-content: center;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
    flex-wrap: wrap;
  }

  .hero-visual {
    min-height: 240px;
    width: 100%;
  }

  .hero-title {
    font-size: 30px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .tier-grid {
    flex-direction: column;
  }

  .compare-table-wrap {
    display: none;
  }

  .compare-mobile-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .compare-mobile-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
  }

  .compare-mobile-card .mobile-card-head {
    padding: 18px 20px;
    background: var(--primary-lighter);
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .compare-mobile-card.recommended .mobile-card-head {
    background: #FFF9EF;
    border-bottom: 2px solid var(--accent);
  }

  .compare-mobile-card .mobile-card-head h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
  }

  .compare-mobile-card .mobile-card-price {
    font-family: var(--font-num);
    font-weight: 700;
    color: var(--primary-dark);
    font-size: 16px;
  }

  .compare-mobile-card .mobile-card-body {
    padding: 16px 20px;
  }

  .compare-mobile-card .mobile-card-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed #F0F2F4;
    font-size: 13px;
  }

  .compare-mobile-card .mobile-card-row:last-child {
    border-bottom: none;
  }

  .compare-mobile-card .mobile-card-row span:first-child {
    color: var(--text-secondary);
  }

  .compare-mobile-card .mobile-card-row span:last-child {
    color: var(--text);
    font-weight: 500;
  }

  .compare-mobile-card .mobile-card-cta {
    padding: 14px 20px;
    border-top: 1px solid var(--border);
  }

  .countdown-num {
    min-width: 58px;
    font-size: 24px;
  }

  .countdown-wrap {
    gap: 8px;
  }

  .news-layout {
    gap: 24px;
  }

  .news-list-item {
    padding: 14px 4px;
    gap: 10px;
  }

  .news-list-title {
    font-size: 14px;
  }

  .news-list-date {
    font-size: 12px;
  }

  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .contact-form-panel {
    padding: 24px;
  }

  .contact-info-panel {
    padding: 28px;
  }

  .footer-grid {
    flex-direction: column;
    gap: 32px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .footer-col:first-child {
    flex: none;
  }
}

/* roulang page: category1 */
:root{
  --primary:#0E8FC2;--primary-dark:#0A6C94;--primary-light:#EAF6FB;--primary-lighter:#F4FAFC;
  --accent:#F59E0B;--accent-dark:#D18206;--accent-light:#FEF3E2;
  --text-main:#1E293B;--text-sub:#5B6B7C;--text-weak:#94A3B8;
  --border:#E4E7EB;--bg:#F7F9FA;--white:#FFFFFF;--success:#10B981;
  --radius:14px;--radius-sm:10px;--radius-xs:8px;
  --shadow:0 4px 16px rgba(15,23,42,0.05);--shadow-hover:0 8px 28px rgba(15,23,42,0.09);
  --font-main:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
  --font-num:"DIN Alternate","Roboto","Helvetica Neue",Arial;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-main);font-size:16px;line-height:1.7;color:var(--text-main);background:var(--white);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:all .25s ease}
ul{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;outline:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.row{max-width:1200px}
.columns{padding:0 12px}
.section{padding:80px 0}
.section.pb-0{padding-bottom:0}
.section-head{max-width:640px;margin-bottom:48px}
.section-title{font-size:30px;line-height:1.3;font-weight:600;color:var(--text-main);letter-spacing:.5px}
.section-subtitle{font-size:15px;line-height:1.6;color:var(--text-sub);margin-top:12px}
.section-head.light .section-title,.section-head.light .section-subtitle{color:#fff}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:#fff;height:72px;border-bottom:1px solid #E8ECF0;box-shadow:0 2px 8px rgba(15,23,42,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:36px;height:36px;background:var(--primary);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;flex-shrink:0}
.logo-text{font-size:20px;font-weight:600;color:var(--text-main);white-space:nowrap}
.logo-text span{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:8px;margin:0 auto}
.nav-link{font-size:15px;font-weight:500;color:var(--text-sub);padding:10px 18px;border-radius:999px;position:relative;transition:all .25s ease}
.nav-link:hover{color:var(--primary);background:var(--primary-lighter)}
.nav-link.active{color:var(--primary);background:var(--primary-light);font-weight:600}
.header-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{width:200px;height:40px;border:1px solid var(--border);border-radius:20px;padding:0 38px 0 16px;font-size:14px;background:var(--bg);transition:all .25s;color:var(--text-main)}
.search-box input:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(14,143,194,.15)}
.search-box i{position:absolute;right:14px;color:var(--text-weak);font-size:14px;pointer-events:none}
.btn-header-cta{height:40px;padding:0 20px;background:var(--accent);color:#fff;border:none;border-radius:10px;font-size:15px;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:all .25s}
.btn-header-cta:hover{background:var(--accent-dark);box-shadow:0 6px 20px rgba(245,158,11,.35);transform:translateY(-1px)}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text-main);font-size:18px;cursor:pointer;align-items:center;justify-content:center}
.mobile-nav{display:none;position:fixed;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);box-shadow:0 12px 32px rgba(15,23,42,.1);z-index:99;padding:12px 20px}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;padding:13px 16px;font-size:15px;font-weight:500;color:var(--text-sub);border-radius:10px;transition:all .2s}
.mobile-nav a:hover,.mobile-nav a.active{background:var(--primary-light);color:var(--primary)}

/* ===== Hero ===== */
.category-hero{background:linear-gradient(135deg,#fff 0%,var(--primary-light) 100%);padding:72px 0 64px;position:relative;overflow:hidden}
.category-hero::after{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:rgba(14,143,194,.06);pointer-events:none}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--accent-light);color:var(--accent-dark);font-size:13px;font-weight:500;padding:6px 16px;border-radius:999px;border:1px dashed var(--accent);margin-bottom:20px}
.hero-badge i{font-size:14px}
.category-hero h1{font-size:34px;line-height:1.3;font-weight:600;color:var(--text-main);letter-spacing:.5px;margin-bottom:16px}
.hero-desc{font-size:15px;line-height:1.7;color:var(--text-sub);max-width:520px;margin-bottom:28px}
.hero-cta-group{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:16px;font-weight:500;border-radius:10px;height:46px;padding:0 30px;transition:all .25s;cursor:pointer;border:none}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(245,158,11,.25)}
.btn-primary:hover{background:var(--accent-dark);box-shadow:0 6px 20px rgba(245,158,11,.35);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(245,158,11,.2)}
.btn-outline{background:#fff;border:1px solid #CBD5DD;color:var(--text-main)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-lighter)}
.hero-safe-info{display:flex;align-items:center;gap:24px;flex-wrap:wrap;font-size:13px;color:var(--text-sub)}
.hero-safe-info span{display:inline-flex;align-items:center;gap:6px}
.hero-safe-info i{color:var(--success)}
.hero-image-wrap{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-hover);text-align:center}
.hero-image-wrap img{width:100%;height:auto;object-fit:cover;border-radius:16px}
.hero-image-wrap::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(255,255,255,.2) 100%);pointer-events:none;border-radius:16px}

/* ===== Feature Grid ===== */
.feature-section{background:var(--white);padding:80px 0}
.feature-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;text-align:center;transition:all .3s ease;height:100%}
.feature-card:hover{box-shadow:var(--shadow-hover);border-color:#CBD5DD;transform:translateY(-4px)}
.feature-icon{width:64px;height:64px;border-radius:16px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:26px;color:var(--primary);transition:all .25s}
.feature-card:hover .feature-icon{background:var(--primary);color:#fff}
.feature-num{font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--primary);margin-bottom:8px;line-height:1}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:10px;color:var(--text-main)}
.feature-card p{font-size:14px;line-height:1.7;color:var(--text-sub);margin-bottom:0}

/* ===== Guide Cards ===== */
.guide-section{background:var(--bg);padding:80px 0}
.guide-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .3s ease;height:100%;display:flex;flex-direction:column;box-shadow:0 2px 8px rgba(15,23,42,.03)}
.guide-card:hover{box-shadow:var(--shadow-hover);border-color:#CBD5DD;transform:translateY(-4px)}
.guide-card-img{position:relative;height:190px;overflow:hidden;background:#F1F3F5}
.guide-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.guide-card:hover .guide-card-img img{transform:scale(1.04)}
.guide-card-body{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column}
.guide-card-body h3{font-size:18px;font-weight:600;color:var(--text-main);margin-bottom:10px}
.guide-card-body p{font-size:14px;line-height:1.7;color:var(--text-sub);flex:1;margin-bottom:16px}
.guide-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.guide-tag{font-size:12px;font-weight:500;color:var(--primary);background:var(--primary-light);padding:4px 12px;border-radius:999px}
.guide-tag.orange{color:var(--accent-dark);background:var(--accent-light)}

/* ===== Scenarios ===== */
.scenario-section{background:var(--white);padding:80px 0}
.scenario-image{border-radius:16px;overflow:hidden;box-shadow:var(--shadow-hover);height:100%;min-height:320px}
.scenario-image img{width:100%;height:100%;object-fit:cover}
.scenario-list{margin-top:8px}
.scenario-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid #F0F2F5}
.scenario-item:last-child{border-bottom:none}
.scenario-item-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--primary);flex-shrink:0}
.scenario-item h4{font-size:16px;font-weight:600;color:var(--text-main);margin-bottom:4px}
.scenario-item p{font-size:14px;line-height:1.6;color:var(--text-sub);margin-bottom:0}

/* ===== Process ===== */
.process-section{background:var(--primary-lighter);padding:80px 0}
.process-step{text-align:center;padding:0 20px;position:relative}
.process-step::after{content:"";position:absolute;top:34px;right:-30px;width:60px;height:2px;background:linear-gradient(90deg,var(--primary),transparent)}
.process-step:last-child::after{display:none}
.process-circle{width:68px;height:68px;border-radius:50%;background:var(--primary);color:#fff;font-size:22px;font-weight:600;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;box-shadow:0 8px 20px rgba(14,143,194,.25);font-family:var(--font-num)}
.process-step h4{font-size:17px;font-weight:600;color:var(--text-main);margin-bottom:8px}
.process-step p{font-size:14px;line-height:1.6;color:var(--text-sub);margin-bottom:0}

/* ===== FAQ ===== */
.faq-section{background:var(--white);padding:80px 0}
.faq-panel{margin-top:4px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;margin-bottom:14px;overflow:hidden;transition:border-color .3s,box-shadow .3s}
.faq-item.open{border-color:var(--primary);box-shadow:0 4px 16px rgba(14,143,194,.1)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;cursor:pointer;font-size:15px;font-weight:600;color:var(--text-main);transition:color .25s;user-select:none}
.faq-item.open .faq-question{color:var(--primary)}
.faq-icon{width:28px;height:28px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:14px;transition:transform .3s,background .3s;flex-shrink:0}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 22px}
.faq-answer p{padding:0 0 18px;font-size:14px;line-height:1.7;color:var(--text-sub)}
.faq-sidebar .section-title{font-size:28px}
.faq-sidebar p{font-size:14px;color:var(--text-sub);line-height:1.7}
.faq-sidebar-contact{margin-top:24px;padding:20px 24px;background:var(--primary-lighter);border-radius:12px;border:1px solid var(--primary-light)}
.faq-sidebar-contact h4{font-size:16px;font-weight:600;color:var(--text-main);margin-bottom:8px}
.faq-sidebar-contact p{font-size:14px;color:var(--text-sub);margin-bottom:4px}
.faq-sidebar-contact i{color:var(--primary);margin-right:6px}

/* ===== CTA ===== */
.cta-section{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);padding:72px 0;position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.06)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;position:relative;z-index:1;flex-wrap:wrap}
.cta-inner h2{font-size:28px;font-weight:600;color:#fff;margin-bottom:10px}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.85);margin-bottom:0}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap}
.btn-light{background:#fff;color:var(--primary-dark);border:none}
.btn-light:hover{background:var(--primary-lighter);box-shadow:0 6px 20px rgba(0,0,0,.15);transform:translateY(-2px)}
.btn-ghost-light{background:transparent;border:1px solid rgba(255,255,255,.6);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* ===== Footer ===== */
.site-footer{background:#16283A;color:#A7B8C4;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo-icon{width:36px;height:36px;background:var(--primary);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:17px}
.footer-logo-text{font-size:20px;font-weight:600;color:#fff;letter-spacing:.5px}
.footer-col p{font-size:13px;line-height:1.7;color:#A7B8C4;margin-bottom:20px;max-width:300px}
.footer-social{display:flex;gap:10px}
.footer-social a{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.08);color:#A7B8C4;display:flex;align-items:center;justify-content:center;font-size:14px;transition:all .25s}
.footer-social a:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;background:var(--primary)}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#A7B8C4;transition:all .25s}
.footer-links a:hover{color:var(--primary-light);padding-left:4px}
.footer-contact-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#A7B8C4;margin-bottom:12px;line-height:1.6}
.footer-contact-list i{color:var(--primary);margin-top:4px;width:16px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0}
.footer-bottom-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:#7D8E9B}
.footer-bottom-links{display:flex;gap:20px}
.footer-bottom-links a{color:#7D8E9B}
.footer-bottom-links a:hover{color:#fff}

/* ===== Responsive ===== */
@media screen and (max-width:1024px){
  .section{padding:56px 0}
  .category-hero{padding:56px 0 48px}
  .main-nav{display:none}
  .search-box{display:none}
  .menu-toggle{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .process-step::after{display:none}
  .cta-inner{justify-content:center;text-align:center}
}
@media screen and (max-width:640px){
  .section{padding:40px 0}
  .category-hero{padding:40px 0 36px}
  .category-hero h1{font-size:28px}
  .hero-cta-group{width:100%}
  .hero-cta-group .btn{flex:1;min-width:140px}
  .hero-safe-info{gap:12px;font-size:12px}
  .section-title{font-size:24px}
  .feature-section .row .columns{margin-bottom:16px}
  .guide-card-img{height:160px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom-inner{flex-direction:column;text-align:center}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .scenario-image{min-height:220px;margin-bottom:20px}
  .process-step{margin-bottom:32px;padding:0}
  .faq-sidebar{margin-bottom:24px}
  .header-inner{gap:12px}
  .logo-text{font-size:17px}
  .btn-header-cta{display:none}
}
@media screen and (max-width:520px){
  .logo-text span{display:inline}
  .logo-icon{width:32px;height:32px;font-size:15px}
  .hero-badge{font-size:12px;padding:5px 12px}
  .hero-desc{font-size:14px}
  .hero-safe-info{font-size:12px}
  .feature-card{padding:22px 18px}
  .guide-card-body h3{font-size:16px}
  .faq-question{font-size:14px;padding:15px 16px}
  .footer-col h4{font-size:14px}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root {
  --primary: #0E8FC2;
  --primary-deep: #0A6C94;
  --primary-light: #EAF6FB;
  --primary-lighter: #F4FAFC;
  --accent: #F59E0B;
  --accent-deep: #D18206;
  --accent-light: #FEF3E2;
  --text-main: #1E293B;
  --text-secondary: #5B6B7C;
  --text-muted: #94A3B8;
  --border-light: #E4E7EB;
  --border-deep: #CBD5DD;
  --bg-light: #F7F9FA;
  --white: #FFFFFF;
  --footer-bg: #16283A;
  --footer-text: #A7B8C4;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 16px rgba(15,23,42,0.05);
  --shadow-hover: 0 8px 28px rgba(15,23,42,0.09);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Roboto", "Helvetica Neue", Arial;
}
/* ============ 基础 Reset ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-main);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease; }
a:hover { color: var(--primary-deep); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
ul, ol { list-style: none; }
::placeholder { color: var(--text-muted); opacity: .8; }
.grid-container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-md);
  height: 44px;
  padding: 0 24px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .2s ease;
  white-space: nowrap;
  text-align: center;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-deep);
  color: #fff;
  box-shadow: 0 6px 20px rgba(245,158,11,0.35);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(245,158,11,0.25); }
.btn-outline {
  background: #fff;
  border-color: var(--border-deep);
  color: var(--text-secondary);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-lighter);
  box-shadow: 0 4px 12px rgba(14,143,194,0.1);
}
/* ============ 顶栏导航 ============ */
.site-header {
  height: 72px;
  background: #fff;
  border-bottom: 1px solid #E8ECF0;
  box-shadow: 0 2px 8px rgba(15,23,42,0.04);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 17px;
  box-shadow: 0 4px 12px rgba(14,143,194,0.25);
}
.logo-text { font-size: 20px; font-weight: 600; color: var(--text-main); letter-spacing: .01em; white-space: nowrap; }
.main-nav { display: flex; gap: 8px; flex: 1; justify-content: center; }
.nav-link {
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all .2s;
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.header-search { position: relative; width: 190px; }
.header-search input {
  width: 100%;
  height: 40px;
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 0 16px 0 38px;
  font-size: 13px;
  background: var(--bg-light);
  outline: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.header-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14,143,194,0.15);
  background: #fff;
}
.search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 13px; pointer-events: none; }
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 22px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  background: var(--accent);
  border: none;
  cursor: pointer;
  transition: all .2s ease;
  white-space: nowrap;
}
.btn-cta:hover { background: var(--accent-deep); box-shadow: 0 6px 20px rgba(245,158,11,0.35); transform: translateY(-1px); color: #fff; }
.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
}
.hamburger span { width: 20px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all .25s; }
.hamburger:hover { background: var(--bg-light); }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* ============ 面包屑 ============ */
.breadcrumb-bar {
  background: #fff;
  border-bottom: 1px solid var(--border-light);
  padding: 15px 0;
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.breadcrumb-list a { color: var(--text-muted); transition: color .2s; }
.breadcrumb-list a:hover { color: var(--primary); }
.breadcrumb-sep { color: var(--border-deep); font-size: 12px; }
.breadcrumb-list .current { color: var(--text-secondary); font-weight: 500; max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
/* ============ 文章主区 ============ */
.article-section { padding: 48px 0 56px; background: var(--bg-light); }
.article-layout { display: grid; grid-template-columns: 68% 32%; gap: 28px; align-items: start; }
.article-main-col {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 40px 44px;
  min-width: 0;
}
.article-tag-wrap { margin-bottom: 16px; }
.article-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  transition: all .2s;
}
.article-tag:hover { background: var(--primary); color: #fff; }
.article-title { font-size: 32px; line-height: 1.3; font-weight: 600; margin-bottom: 20px; }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  padding: 16px 0;
  margin-bottom: 28px;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-muted); }
.meta-item i { color: var(--primary); font-size: 14px; }
.meta-item:first-child { color: var(--text-secondary); }
/* ============ 文章正文 ============ */
.article-body { font-size: 16px; line-height: 1.85; color: var(--text-main); word-wrap: break-word; }
.article-body h2 {
  font-size: 23px;
  font-weight: 600;
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.45;
}
.article-body h3 { font-size: 19px; font-weight: 600; margin: 30px 0 12px; line-height: 1.45; }
.article-body p { margin: 16px 0 22px; line-height: 1.85; }
.article-body ul, .article-body ol { margin: 16px 0 22px; padding-left: 24px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; line-height: 1.75; }
.article-body li::marker { color: var(--primary); }
.article-body img { border-radius: var(--radius-md); margin: 24px 0; box-shadow: var(--shadow-card); }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--primary-deep); }
.article-body blockquote {
  margin: 24px 0;
  padding: 18px 24px;
  border-left: 4px solid var(--primary);
  background: var(--primary-lighter);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-secondary);
  font-size: 15px;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.article-body th, .article-body td { border: 1px solid var(--border-light); padding: 12px 16px; text-align: left; }
.article-body th { background: var(--primary-lighter); font-weight: 600; color: var(--text-main); }
.article-body tr:hover td { background: var(--primary-lighter); }
/* ============ 空状态 ============ */
.article-empty-state { text-align: center; padding: 80px 20px; }
.empty-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--primary);
  margin: 0 auto 24px;
}
.article-empty-state h2 { font-size: 22px; font-weight: 600; margin-bottom: 12px; }
.article-empty-state p { color: var(--text-secondary); font-size: 15px; margin-bottom: 24px; }
/* ============ 侧边栏 ============ */
.article-side-col { display: flex; flex-direction: column; gap: 24px; min-width: 0; }
.sidebar-widget {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
}
.sidebar-widget-title { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.title-line { width: 4px; height: 18px; border-radius: 2px; background: var(--primary); flex-shrink: 0; }
.sidebar-widget-title h3 { font-size: 18px; font-weight: 600; margin: 0; line-height: 1.4; }
.related-list { display: flex; flex-direction: column; gap: 6px; }
.related-item { display: flex; gap: 12px; padding: 10px; border-radius: var(--radius-md); transition: background .2s, box-shadow .2s; }
.related-item:hover { background: var(--primary-lighter); box-shadow: 0 2px 8px rgba(14,143,194,0.06); }
.related-thumb { flex: 0 0 82px; width: 82px; height: 62px; border-radius: 8px; overflow: hidden; background: var(--bg-light); }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; }
.related-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; justify-content: center; }
.related-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .2s;
}
.related-item:hover .related-title { color: var(--primary); }
.related-date { font-size: 12px; color: var(--text-muted); font-family: var(--font-num); }
.sidebar-cta-widget {
  background: linear-gradient(135deg, var(--primary-lighter), var(--primary-light));
  border-color: rgba(14,143,194,0.2);
}
.sidebar-cta-widget h3 { color: var(--primary-deep); }
.sidebar-cta-widget p { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.7; }
.sidebar-cta-widget .btn { width: 100%; margin-bottom: 10px; }
.sidebar-cta-widget .btn:last-child { margin-bottom: 0; }
/* ============ 文章底部CTA ============ */
.article-cta-section { padding: 32px 0 72px; background: var(--bg-light); }
.article-cta-card {
  background: linear-gradient(120deg, var(--primary-light), var(--primary-lighter));
  border: 1px solid rgba(14,143,194,0.2);
  border-radius: 18px;
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-card);
}
.article-cta-card h2 { font-size: 25px; font-weight: 600; margin-bottom: 12px; line-height: 1.4; }
.article-cta-card p { color: var(--text-secondary); font-size: 15px; margin-bottom: 24px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
/* ============ 页脚 ============ */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 64px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 17px;
}
.footer-logo-text { font-size: 20px; font-weight: 600; color: #fff; white-space: nowrap; }
.footer-col p { color: var(--footer-text); font-size: 13px; line-height: 1.75; margin-bottom: 16px; max-width: 280px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--footer-text); font-size: 14px; transition: color .2s, padding-left .2s; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--footer-text);
  transition: all .2s;
}
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-contact-list li { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; font-size: 14px; color: var(--footer-text); line-height: 1.6; }
.footer-contact-list i { color: var(--primary); margin-top: 3px; width: 16px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
}
.footer-bottom-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: rgba(167,184,196,0.8);
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom-links { display: flex; gap: 16px; }
.footer-bottom-links a { color: rgba(167,184,196,0.8); transition: color .2s; }
.footer-bottom-links a:hover { color: #fff; }
/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .header-search { width: 150px; }
  .main-nav .nav-link { padding: 8px 14px; font-size: 14px; }
  .article-section { padding: 32px 0 48px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-side-col { flex-direction: row; flex-wrap: wrap; }
  .sidebar-widget { flex: 1 1 calc(50% - 12px); min-width: 260px; }
}
@media (max-width: 640px) {
  .header-inner { gap: 10px; }
  .logo-text { font-size: 17px; }
  .logo-icon { width: 32px; height: 32px; font-size: 14px; }
  .header-search { display: none; }
  .hamburger { display: flex; }
  .main-nav {
    position: fixed;
    top: 72px;
    right: 0;
    width: 260px;
    max-width: 80%;
    height: calc(100vh - 72px);
    overflow-y: auto;
    background: #fff;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: 6px;
    padding: 20px;
    box-shadow: -8px 0 28px rgba(15,23,42,0.1);
    transform: translateX(100%);
    transition: transform .25s ease;
    z-index: 99;
    border-radius: 0 0 0 14px;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav .nav-link { display: block; text-align: left; padding: 13px 16px; border-radius: 10px; font-size: 16px; }
  .main-nav .nav-link.active { background: var(--primary-light); color: var(--primary); }
  .breadcrumb-bar { padding: 12px 0; }
  .breadcrumb-list .current { max-width: 140px; }
  .article-section { padding: 20px 0 36px; }
  .article-main-col { padding: 22px 18px; border-radius: 12px; }
  .article-title { font-size: 25px; }
  .article-meta { gap: 14px; font-size: 13px; padding: 13px 0; }
  .meta-item { font-size: 13px; }
  .article-cta-card { padding: 28px 20px; border-radius: 14px; }
  .article-cta-card h2 { font-size: 21px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .site-footer { padding-top: 44px; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .btn-cta { padding: 0 16px; font-size: 14px; }
  .article-side-col { flex-direction: column; }
  .sidebar-widget { flex: 1 1 100%; }
}