/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --primary: #0E4C4D;
  --primary-dark: #0A3A3B;
  --primary-light: #1A6B6C;
  --accent: #C9933B;
  --accent-light: #DBA95B;
  --accent-dark: #A87B2E;
  --coral: #E2624A;
  --bg: #F7F5F0;
  --white: #FFFFFF;
  --dark: #141A1A;
  --text: #1F2424;
  --text-gray: #4A5656;
  --text-light: #8B9595;
  --border: #E4E0D8;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(20,26,26,.04), 0 8px 24px rgba(20,26,26,.06);
  --shadow-hover: 0 4px 16px rgba(20,26,26,.08), 0 16px 48px rgba(20,26,26,.12);
  --sp-sm: 20px;
  --sp-md: 40px;
  --sp-lg: 80px;
  --transition: .25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

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

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  line-height: 1.4;
  white-space: nowrap;
}

.btn:active {
  transform: scale(.97);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(14,76,77,.25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14,76,77,.32);
}

.btn-accent {
  background: var(--accent);
  color: #1F2424;
  box-shadow: 0 4px 14px rgba(201,147,59,.28);
}

.btn-accent:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201,147,59,.36);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: rgba(14,76,77,.06);
  border-color: var(--primary-dark);
  color: var(--primary-dark);
}

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

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

/* ========== 页头导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  height: 72px;
  display: flex;
  align-items: center;
}

.header-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-mark {
  width: 38px;
  height: 38px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(14,76,77,.3);
}

.brand-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .5px;
}

.brand-sub {
  font-size: 12px;
  color: var(--text-light);
  border-left: 1px solid var(--border);
  padding-left: 10px;
  line-height: 1;
}

.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

.nav-item a {
  font-size: 15px;
  color: var(--text-gray);
  font-weight: 500;
  padding: 8px 0;
  position: relative;
}

.nav-item a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
  border-radius: 2px;
}

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

.nav-item a:hover::after,
.nav-item.active a::after {
  transform: scaleX(1);
}

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

.nav-tools {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mega-trigger {
  position: relative;
}

.mega-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  color: var(--text-gray);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.mega-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(14,76,77,.04);
}

.mega-btn:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.mega-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: 720px;
  background: #FDFCF9;
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(0,0,0,.12);
  border: 1px solid var(--border);
  padding: 28px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all .3s ease;
  z-index: 999;
}

.mega-trigger:hover .mega-panel,
.mega-trigger:focus-within .mega-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
}

.mega-col h4 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-light);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.mega-col a.mega-link,
.mega-col a.col-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  font-size: 14px;
  color: var(--text-gray);
}

.mega-col a.col-link:hover {
  color: var(--primary);
}

.mega-col a.col-link i {
  color: var(--primary);
  font-size: 14px;
  width: 20px;
  text-align: center;
}

.mega-col .mega-post-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  font-size: 14px;
  color: var(--text-gray);
  gap: 12px;
}

.mega-col .mega-post-link:hover {
  color: var(--primary);
}

.mega-col .mega-post-link time {
  font-size: 12px;
  color: var(--text-light);
  white-space: nowrap;
}

.mega-cta-card {
  background: var(--primary);
  border-radius: var(--radius-sm);
  padding: 20px;
  color: #fff;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.mega-cta-card h4 {
  color: var(--accent-light) !important;
  border: none !important;
  padding: 0 !important;
  margin-bottom: 6px !important;
  text-transform: none !important;
  font-size: 15px !important;
  letter-spacing: 0 !important;
}

.mega-cta-card p {
  font-size: 13px;
  line-height: 1.6;
  opacity: .85;
  margin-bottom: 12px;
}

.mega-cta-card .btn-accent {
  padding: 8px 18px;
  font-size: 14px;
  align-self: flex-start;
}

.menu-toggle {
  display: none;
  font-size: 22px;
  color: var(--text);
  padding: 6px;
  cursor: pointer;
}

/* 移动端导航 */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 12px 24px rgba(0,0,0,.08);
  padding: 16px 24px 24px;
  z-index: 999;
}

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

.mobile-nav .mobile-nav-list li {
  border-bottom: 1px solid #f0ede7;
}

.mobile-nav .mobile-nav-list a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
}

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

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

/* ========== Hero ========== */
.hero {
  min-height: 90vh;
  position: relative;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(10,58,59,.92) 0%, rgba(14,76,77,.85) 55%, rgba(201,147,59,.3) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 80px 0;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -40px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(201,147,59,.15);
  filter: blur(80px);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-text h1 {
  font-size: 42px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero-text h1 .highlight {
  color: var(--accent-light);
}

.hero-text p.lead {
  font-size: 18px;
  color: rgba(255,255,255,.85);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-trust {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-trust span {
  font-size: 13px;
  color: rgba(255,255,255,.7);
  display: flex;
  align-items: center;
  gap: 6px;
}

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

.hero-login-card {
  background: var(--white);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  max-width: 380px;
  margin-left: auto;
  position: relative;
}

.hero-login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  border-radius: 16px 16px 0 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.login-card-header {
  text-align: center;
  margin-bottom: 20px;
}

.login-card-header h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.login-card-header p {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 4px;
}

.login-card-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.login-card-body input {
  height: 44px;
  border: 1px solid #D8D3CA;
  border-radius: 6px;
  padding: 0 14px;
  font-size: 14px;
}

.login-card-body input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14,76,77,.12);
}

.login-card-body .btn-primary {
  height: 44px;
}

.login-card-footer {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

.login-card-footer a {
  color: var(--primary);
}

.login-card-footer a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* ========== 板块通用 ========== */
.section {
  padding: 80px 0;
}

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

.section-head .section-tag {
  display: inline-block;
  background: rgba(14,76,77,.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: .5px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 10px;
}

.section-head p.sub {
  font-size: 16px;
  color: var(--text-gray);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ========== 卖点区 ========== */
.features {
  background: var(--bg);
}

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

.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
  opacity: 0;
  transition: opacity var(--transition);
}

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

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

.feature-card.feature-wide {
  grid-column: span 1;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(14,76,77,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
  font-size: 22px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.8;
}

/* ========== 演示区 ========== */
.demo-section {
  background: var(--white);
}

.demo-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.demo-steps {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.demo-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  position: relative;
}

.demo-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 21px;
  top: 48px;
  width: 2px;
  height: calc(100% - 18px);
  background: linear-gradient(180deg, var(--primary) 0%, rgba(14,76,77,.1) 100%);
}

.step-num {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(14,76,77,.25);
  z-index: 1;
}

.step-content h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.8;
}

.demo-visual {
  position: relative;
}

.demo-visual img {
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(0,0,0,.15);
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
}

.demo-visual::after {
  content: 'betway网页登录操作面板';
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(20,26,26,.7);
  color: #fff;
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
}

/* ========== 证据区 ========== */
.proof-section {
  background: var(--dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.proof-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

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

.proof-section .section-head p.sub {
  color: rgba(255,255,255,.7);
}

.proof-section .section-tag {
  background: rgba(201,147,59,.15);
  color: var(--accent-light);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
  margin-bottom: 60px;
}

.stat-item {
  padding: 20px;
  border-right: 1px solid rgba(255,255,255,.1);
}

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

.stat-number {
  font-size: 48px;
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,.7);
}

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

.testimonial-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(4px);
}

.testimonial-card .stars {
  color: var(--accent);
  font-size: 14px;
  margin-bottom: 14px;
  display: flex;
  gap: 2px;
}

.testimonial-card .quote {
  font-size: 15px;
  color: rgba(255,255,255,.85);
  line-height: 1.8;
  margin-bottom: 16px;
}

.testimonial-card .author {
  font-size: 13px;
  color: rgba(255,255,255,.6);
}

/* ========== 价格区 ========== */
.pricing-section {
  background: var(--bg);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1000px;
  margin: 0 auto 24px;
}

.pricing-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 30px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition);
}

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

.pricing-card.recommended {
  border: 2px solid var(--accent);
  transform: scale(1.03);
  box-shadow: 0 8px 30px rgba(201,147,59,.15);
}

.pricing-card.recommended:hover {
  transform: scale(1.03) translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #1F2424;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 18px;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(201,147,59,.3);
}

.pricing-card .plan-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.pricing-card .plan-desc {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 20px;
}

.pricing-card .price {
  font-size: 40px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  margin-bottom: 24px;
}

.pricing-card .price span {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-light);
  margin-left: 4px;
}

.pricing-card ul {
  margin-bottom: 28px;
  flex: 1;
}

.pricing-card ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-gray);
  padding: 5px 0;
}

.pricing-card ul li i {
  color: var(--primary);
  font-size: 13px;
}

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

.pricing-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
}

/* ========== FAQ ========== */
.faq-section {
  background: var(--white);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item.active {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}

.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color var(--transition);
}

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

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

.faq-icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: 50%;
  background: rgba(14,76,77,.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all .3s ease;
}

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

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-gray);
  line-height: 1.8;
}

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

/* ========== 最新资讯区 ========== */
.news-section {
  background: #FDFCF8;
  border-top: 1px solid var(--border);
}

.news-wrapper {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 40px;
  align-items: start;
}

.news-feature {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all var(--transition);
  display: block;
}

.news-feature:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.news-feature img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.news-feature-body {
  padding: 24px;
}

.news-feature-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.5;
  transition: color var(--transition);
}

.news-feature:hover .news-feature-body h3 {
  color: var(--primary);
}

.news-feature-body p {
  font-size: 14px;
  color: var(--text-gray);
  margin-bottom: 16px;
  line-height: 1.7;
}

.news-meta {
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 13px;
  color: var(--text-light);
}

.news-meta .tag {
  background: rgba(14,76,77,.08);
  color: var(--primary);
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 500;
  font-size: 12px;
}

.news-list-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.news-list-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: all var(--transition);
}

.news-list-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateX(4px);
}

.news-list-item .news-title {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
  transition: color var(--transition);
  line-height: 1.5;
}

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

.news-list-item time {
  font-size: 12px;
  color: var(--text-light);
  white-space: nowrap;
  flex-shrink: 0;
}

.news-empty {
  grid-column: 1 / -1;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 60px;
  text-align: center;
  color: var(--text-light);
  font-size: 15px;
}

/* ========== CTA 区 ========== */
.cta-section {
  background: linear-gradient(135deg, rgba(10,58,59,.95), rgba(14,76,77,.9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 30px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,.8);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

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

/* ========== 浮动 CTA ========== */
.float-cta {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all .4s ease;
}

.float-cta.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.float-cta .btn-accent {
  border-radius: 50px;
  padding: 14px 28px;
  font-size: 15px;
  box-shadow: 0 6px 20px rgba(201,147,59,.4);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 6px 20px rgba(201,147,59,.4), 0 0 0 0 rgba(201,147,59,.3); }
  70% { box-shadow: 0 6px 20px rgba(201,147,59,.4), 0 0 0 16px rgba(201,147,59,0); }
  100% { box-shadow: 0 6px 20px rgba(201,147,59,.4), 0 0 0 0 rgba(201,147,59,0); }
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  border-top: 3px solid var(--accent);
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr 1.2fr;
  gap: 48px;
  padding: 64px 24px 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-col h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-col h4 {
  color: rgba(255,255,255,.9);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

.footer-col p {
  font-size: 14px;
  line-height: 1.8;
  opacity: .8;
}

.footer-domain {
  font-size: 13px;
  color: var(--accent-light);
  margin-top: 8px;
  display: inline-block;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.7);
  padding: 6px 0;
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.5);
  max-width: 1200px;
  margin: 0 auto;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .mega-trigger {
    display: none;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-login-card {
    margin: 0 auto;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .demo-wrapper {
    grid-template-columns: 1fr;
  }
  .demo-visual {
    order: -1;
  }
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,.1);
  }
  .testimonials-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
  }
  .pricing-card.recommended {
    transform: scale(1);
  }
  .pricing-card.recommended:hover {
    transform: translateY(-4px);
  }
  .news-wrapper {
    grid-template-columns: 1fr;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .mega-panel {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }
  .hero {
    min-height: auto;
    padding: 60px 0;
  }
  .hero-text h1 {
    font-size: 30px;
  }
  .hero-text p.lead {
    font-size: 16px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .footer-main {
    grid-template-columns: 1fr;
  }
  .float-cta .btn-accent {
    padding: 12px 20px;
    font-size: 14px;
    border-radius: 50px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .brand-text {
    font-size: 14px;
  }
  .brand-sub {
    display: none;
  }
  .brand-mark {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }
  .hero {
    padding: 40px 0;
  }
  .hero-text h1 {
    font-size: 25px;
  }
  .hero-login-card {
    padding: 24px;
  }
  .hero-cta {
    flex-direction: column;
  }
  .hero-cta .btn {
    width: 100%;
  }
  .stats-row {
    grid-template-columns: 1fr;
  }
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  .cta-buttons .btn {
    width: 100%;
    max-width: 280px;
  }
  .news-list-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

/* Foundation 修正 */
.grid-container {
  max-width: 1200px;
}

a:focus,
button:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

::selection {
  background: rgba(14,76,77,.2);
}

/* roulang page: category1 */
:root {
  --primary: #0E4C4D;
  --primary-dark: #0A3A3B;
  --primary-light: #1A6B6C;
  --accent: #C9933B;
  --accent-dark: #A87A2E;
  --accent-light: #F5E6CC;
  --coral: #E2624A;
  --bg: #F7F5F0;
  --white: #FFFFFF;
  --dark: #141A1A;
  --text: #1F2424;
  --text-secondary: #4A5656;
  --text-muted: #8B9595;
  --border: #E4E0D8;
  --card-border: #EDEAE3;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(20,26,26,.04), 0 8px 24px rgba(20,26,26,.06);
  --shadow-hover: 0 4px 16px rgba(20,26,26,.08), 0 16px 40px rgba(20,26,26,.10);
  --transition: 0.25s ease;
  --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: var(--primary); transition: color var(--transition); }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; color: var(--accent);
  background: var(--accent-light); padding: 4px 14px;
  border-radius: 20px; margin-bottom: 14px;
  letter-spacing: 1px; text-transform: uppercase;
}
.section-title { font-size: 32px; font-weight: 700; line-height: 1.3; color: var(--text); margin-bottom: 12px; }
.section-subtitle { font-size: 17px; color: var(--text-secondary); max-width: 640px; margin-bottom: 48px; line-height: 1.7; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; transition: all var(--transition);
  border: 2px solid transparent; line-height: 1.4;
}
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(14,76,77,.3); }
.btn-accent { background: var(--accent); color: var(--dark); }
.btn-accent:hover { background: var(--accent-dark); color: var(--white); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(201,147,59,.35); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); }
.btn:active { transform: scale(.97); }
.btn:focus, a:focus, button:focus { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: var(--white); border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(20,26,26,.04);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  background: var(--primary); color: var(--white); border-radius: 8px;
  font-size: 17px; flex-shrink: 0;
}
.brand-text { font-size: 20px; font-weight: 700; color: var(--text); line-height: 1.2; }
.brand-domain { font-size: 12px; color: var(--text-muted); display: block; letter-spacing: .5px; }
.main-nav ul { display: flex; align-items: center; gap: 4px; }
.main-nav .nav-item a {
  display: block; padding: 8px 18px; font-size: 15px; font-weight: 500;
  color: var(--text-secondary); border-radius: 6px; position: relative;
  transition: color var(--transition), background var(--transition);
}
.main-nav .nav-item a:hover { color: var(--primary); background: rgba(14,76,77,.06); }
.main-nav .nav-item a::after {
  content: ""; position: absolute; bottom: 2px; left: 18px; right: 18px;
  height: 2px; background: var(--primary); border-radius: 2px;
  transform: scaleX(0); transition: transform var(--transition); transform-origin: center;
}
.main-nav .nav-item a:hover::after { transform: scaleX(1); }
.main-nav .nav-item.active a { color: var(--primary); font-weight: 600; background: rgba(14,76,77,.04); }
.main-nav .nav-item.active a::after { transform: scaleX(1); }
.nav-more-trigger {
  display: flex; align-items: center; gap: 6px; padding: 8px 16px;
  font-size: 15px; color: var(--text-secondary); border-radius: 6px;
  transition: all var(--transition); border: 1px solid var(--border); background: var(--white);
}
.nav-more-trigger:hover { color: var(--primary); border-color: var(--primary); background: rgba(14,76,77,.04); }
.mega-panel {
  position: absolute; top: 72px; right: 24px; width: 760px;
  background: var(--white); border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(0,0,0,.12); border: 1px solid var(--card-border);
  padding: 28px; opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all .3s ease; z-index: 999;
}
.mega-panel.open { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.mega-col h4 { font-size: 14px; font-weight: 700; color: var(--text); margin-bottom: 14px; position: relative; padding-bottom: 6px; }
.mega-col h4::after { content: ""; position: absolute; bottom: 0; left: 0; width: 24px; height: 2px; background: var(--accent); }
.mega-cat-list { display: flex; flex-direction: column; gap: 8px; }
.mega-cat-list a {
  display: flex; align-items: center; gap: 8px; padding: 8px 12px;
  border-radius: 6px; font-size: 14px; color: var(--text-secondary);
  transition: all var(--transition); background: var(--white);
}
.mega-cat-list a:hover { background: var(--bg); color: var(--primary); }
.mega-cat-list a i { color: var(--accent); width: 18px; text-align: center; }
.mega-post-list { display: flex; flex-direction: column; gap: 10px; }
.mega-post-list a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 10px; border-radius: 6px; font-size: 14px; color: var(--text-secondary);
  transition: all var(--transition); background: var(--white);
}
.mega-post-list a:hover { background: var(--bg); color: var(--primary); }
.mega-post-list .time { font-size: 12px; color: var(--text-muted); flex-shrink: 0; }
.mega-cta-card {
  background: var(--primary); color: var(--white); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 10px;
  justify-content: space-between; min-height: 150px;
}
.mega-cta-card h4 { color: var(--white); font-size: 16px; margin-bottom: 0; }
.mega-cta-card h4::after { background: var(--accent); }
.mega-cta-card p { font-size: 13px; color: rgba(255,255,255,.85); line-height: 1.6; }
.mega-cta-card a {
  color: var(--accent); font-weight: 600; font-size: 14px;
  display: inline-flex; align-items: center; gap: 4px;
}
.mega-cta-card a:hover { color: var(--white); }
.mobile-menu-toggle { display: none; font-size: 22px; color: var(--text); padding: 8px; }

/* ===== Hero ===== */
.hero {
  position: relative; background: linear-gradient(135deg, #0E4C4D 0%, #155F5A 50%, #F7F5F0 100%);
  padding: 100px 0; overflow: hidden; min-height: 480px;
  display: flex; align-items: center;
}
.hero-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: .18; z-index: 0;
}
.hero .container { position: relative; z-index: 1; }
.hero-breadcrumb {
  font-size: 13px; color: rgba(255,255,255,.8); margin-bottom: 20px;
  display: flex; align-items: center; gap: 6px;
}
.hero-breadcrumb a { color: rgba(255,255,255,.9); }
.hero-breadcrumb span { color: var(--accent); }
.hero h1 {
  font-size: 40px; font-weight: 800; color: var(--white); line-height: 1.3;
  max-width: 600px; margin-bottom: 16px;
}
.hero p.lead { font-size: 18px; color: rgba(255,255,255,.9); max-width: 560px; line-height: 1.8; margin-bottom: 28px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-actions .btn-primary { background: var(--accent); color: var(--dark); }
.hero-actions .btn-primary:hover { background: var(--accent-light); }
.hero-actions .btn-outline { border-color: rgba(255,255,255,.7); color: var(--white); }
.hero-actions .btn-outline:hover { background: rgba(255,255,255,.1); border-color: var(--white); }
.hero-stats {
  display: flex; gap: 36px; margin-top: 48px; padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.2);
}
.hero-stat .num { font-size: 30px; font-weight: 700; color: var(--accent); }
.hero-stat .label { font-size: 13px; color: rgba(255,255,255,.75); }

/* ===== Login Methods Grid ===== */
.methods-section { padding: 80px 0; }
.methods-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.method-card {
  background: var(--white); border: 1px solid var(--card-border);
  border-radius: var(--radius); overflow: hidden;
  transition: all var(--transition); box-shadow: var(--shadow);
}
.method-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.method-card .card-img { width: 100%; height: 180px; object-fit: cover; background: #E8E6E0; }
.method-card .card-body { padding: 24px; }
.method-card .card-icon {
  width: 40px; height: 40px; border-radius: 8px; background: rgba(14,76,77,.08);
  display: flex; align-items: center; justify-content: center; color: var(--primary);
  font-size: 18px; margin-bottom: 16px;
}
.method-card h3 { font-size: 18px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.method-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== Preparation Checklist ===== */
.prep-section {
  background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.prep-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.prep-item {
  background: var(--bg); border-radius: var(--radius); padding: 24px;
  border-left: 3px solid var(--accent); transition: all var(--transition);
}
.prep-item:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.prep-item .prep-num { font-size: 14px; font-weight: 700; color: var(--accent); margin-bottom: 8px; display: block; }
.prep-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.prep-item p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* ===== Process Steps ===== */
.process-section { padding: 80px 0; background: var(--dark); position: relative; }
.process-section .section-title { color: var(--white); }
.process-section .section-subtitle { color: rgba(255,255,255,.7); }
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.process-steps::before {
  content: ""; position: absolute; top: 30px; left: 60px; right: 60px;
  height: 2px; border-top: 2px dashed rgba(255,255,255,.2); z-index: 0;
}
.process-step { text-align: center; position: relative; z-index: 1; padding: 0 8px; }
.step-circle {
  width: 60px; height: 60px; border-radius: 50%; background: var(--primary-light);
  color: var(--white); display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 700; margin: 0 auto 16px;
  border: 3px solid rgba(255,255,255,.3); box-shadow: 0 4px 16px rgba(0,0,0,.2);
}
.process-step h3 { font-size: 17px; font-weight: 600; color: var(--white); margin-bottom: 8px; }
.process-step p { font-size: 14px; color: rgba(255,255,255,.65); line-height: 1.6; }

/* ===== Tips ===== */
.tips-section { padding: 80px 0; }
.tips-layout { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
.tip-card {
  background: var(--white); border-radius: var(--radius); padding: 28px;
  border: 1px solid var(--card-border); box-shadow: var(--shadow);
  transition: all var(--transition);
}
.tip-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.tip-card .tip-title { display: flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.tip-card .tip-title i { color: var(--accent); }
.tip-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; background: var(--white); border-top: 1px solid var(--border); }
.faq-list { max-width: 840px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: all var(--transition);
}
.faq-item.open { border-color: var(--primary); box-shadow: var(--shadow); }
.faq-question {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 24px; font-size: 16px; font-weight: 500; color: var(--text);
  cursor: pointer; gap: 16px;
}
.faq-question i {
  color: var(--accent); font-size: 14px; transition: transform var(--transition); flex-shrink: 0;
}
.faq-item.open .faq-question i { transform: rotate(45deg); }
.faq-item.open .faq-question { color: var(--primary); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height .3s ease;
  padding: 0 24px; font-size: 15px; color: var(--text-secondary);
  line-height: 1.8; border-top: 0 solid var(--border);
}
.faq-item.open .faq-answer {
  max-height: 400px; padding: 0 24px 20px; border-top-width: 1px; padding-top: 14px;
}

/* ===== CTA ===== */
.cta-section { padding: 60px 0; background: linear-gradient(135deg, #0E4C4D 0%, #143F3F 100%); }
.cta-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 30px;
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: 16px; padding: 40px; flex-wrap: wrap;
}
.cta-inner h2 { font-size: 26px; color: var(--white); margin-bottom: 8px; }
.cta-inner p { color: rgba(255,255,255,.75); font-size: 15px; max-width: 480px; }
.cta-inner .btn { flex-shrink: 0; }

/* ===== Floating CTA ===== */
.float-cta {
  position: fixed; bottom: 30px; right: 30px; z-index: 900;
  background: var(--accent); color: var(--dark);
  border-radius: 50px; padding: 14px 24px;
  font-size: 15px; font-weight: 600; display: flex; align-items: center; gap: 8px;
  box-shadow: 0 4px 20px rgba(201,147,59,.4);
  transition: all var(--transition); border: none;
  animation: pulse 2s infinite;
  cursor: pointer;
}
.float-cta:hover { background: var(--accent-dark); color: var(--white); transform: translateY(-2px); }
.float-cta.hidden { opacity: 0; visibility: hidden; transform: translateY(20px); }
.float-cta i { font-size: 18px; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(201,147,59,.4); }
  50% { box-shadow: 0 4px 30px rgba(201,147,59,.65); }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark); color: var(--text-muted);
  border-top: 1px solid var(--accent);
}
.footer-main {
  max-width: 1200px; margin: 0 auto; padding: 56px 24px 32px;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 36px;
}
.brand-col h3 { color: var(--white); font-size: 20px; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.brand-col p { font-size: 14px; line-height: 1.7; color: var(--text-muted); margin-bottom: 12px; }
.footer-domain { font-size: 13px; color: var(--accent); letter-spacing: 1px; }
.footer-col h4 {
  font-size: 15px; color: var(--white); font-weight: 600; margin-bottom: 16px;
  position: relative; padding-bottom: 8px;
}
.footer-col h4::after {
  content: ""; position: absolute; bottom: 0; left: 0; width: 20px; height: 2px;
  background: var(--accent);
}
.footer-col a {
  display: block; font-size: 14px; color: var(--text-muted);
  padding: 4px 0; transition: all var(--transition);
}
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-col p { font-size: 14px; margin: 6px 0; color: var(--text-muted); }
.footer-col p i { color: var(--accent); margin-right: 6px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 24px; text-align: center; font-size: 13px;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .mega-panel { width: 640px; right: 16px; }
  .methods-grid { grid-template-columns: repeat(2, 1fr); }
  .prep-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .process-steps::before { display: none; }
  .tips-layout { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 34px; }
}
@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .mobile-menu-toggle { display: block; }
  .mobile-nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--white); border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,.08); padding: 16px 24px;
  }
  .mobile-nav.open { display: block; }
  .mobile-nav ul { flex-direction: column; gap: 4px; }
  .mobile-nav .nav-item a {
    display: block; padding: 12px 16px; font-size: 15px;
    border-radius: 8px; color: var(--text-secondary);
  }
  .mobile-nav .nav-item.active a { background: rgba(14,76,77,.08); color: var(--primary); font-weight: 600; }
  .section { padding: 60px 0; }
  .section-title { font-size: 26px; }
  .hero { padding: 60px 0; min-height: auto; }
  .hero h1 { font-size: 28px; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .hero-stat .num { font-size: 24px; }
  .methods-grid { grid-template-columns: 1fr; }
  .prep-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .tips-layout { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 28px; }
  .cta-inner { flex-direction: column; text-align: center; padding: 28px; }
  .float-cta { padding: 14px; border-radius: 50%; }
  .float-cta span { display: none; }
  .float-cta { bottom: 20px; right: 20px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 24px; }
  .hero .btn { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; }
  .methods-grid { grid-template-columns: 1fr; }
  .prep-grid { grid-template-columns: 1fr; }
  .footer-main { padding: 40px 16px 20px; }
}

/* roulang page: article */
/* ========= 设计变量 ========= */
:root {
  --primary: #0E4C4D;
  --primary-dark: #093A3B;
  --primary-light: #146064;
  --accent: #C9933B;
  --accent-dark: #A87A2C;
  --accent-light: #E3B465;
  --secondary: #E2624A;
  --bg: #F7F5F0;
  --bg-card: #FFFFFF;
  --bg-dark: #141A1A;
  --bg-soft: #F0EEE8;
  --text: #1F2424;
  --text-secondary: #4A5656;
  --text-muted: #8B9595;
  --border: #E4E0D8;
  --border-card: #EDEAE3;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 2px 8px rgba(20,26,26,.04), 0 8px 24px rgba(20,26,26,.06);
  --shadow-hover: 0 4px 16px rgba(20,26,26,.08), 0 16px 40px rgba(20,26,26,.12);
  --container: 1200px;
  --content-max: 720px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
}

/* ========= Reset 与基础 ========= */
*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; padding: 0; }
ul[class], ol[class] { list-style: none; margin: 0; padding: 0; }
img { max-width: 100%; height: auto; display: block; }
input, button, select, textarea { font: inherit; color: inherit; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: .5em;
}
h1 { font-size: clamp(28px, 5vw, 38px); letter-spacing: -.02em; }
h2 { font-size: clamp(24px, 3.5vw, 30px); letter-spacing: -.01em; }
h3 { font-size: 22px; }
p { margin-bottom: 1em; }

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

/* ========= 按钮 ========= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff !important;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(14,76,77,.28);
}
.btn-outline {
  background: transparent;
  color: var(--primary) !important;
  border-color: var(--primary);
}
.btn-outline:hover {
  background: rgba(14,76,77,.06);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
}
.btn-accent {
  background: var(--accent);
  color: #1F2424 !important;
  border-color: var(--accent);
}
.btn-accent:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201,147,59,.32);
}
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* ========= 页眉 / 导航 ========= */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 4px rgba(20,26,26,.03);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none !important;
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 17px; font-weight: 700; color: var(--text); letter-spacing: -.01em; }
.brand-domain { font-size: 11px; color: var(--text-muted); letter-spacing: .02em; }

.main-nav ul {
  display: flex;
  gap: 2px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all .22s ease;
}
.main-nav a:hover {
  color: var(--primary);
  background: rgba(14,76,77,.05);
}
.main-nav .nav-item.active a {
  color: var(--primary);
  font-weight: 600;
  background: rgba(14,76,77,.07);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.mega-wrap { position: relative; }
.mega-trigger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-secondary);
  font-size: 15px;
  cursor: pointer;
  transition: all .25s;
}
.mega-trigger:hover, .mega-wrap.open .mega-trigger {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(14,76,77,.04);
}

.mega-panel {
  position: absolute;
  top: calc(100% + 14px);
  right: -8px;
  width: 720px;
  display: grid;
  grid-template-columns: 1.1fr 1.3fr .9fr;
  gap: 20px;
  padding: 24px;
  background: #FDFBF7;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 32px rgba(0,0,0,.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all .25s ease;
  z-index: 100;
}
.mega-wrap:hover .mega-panel,
.mega-wrap.open .mega-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mega-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.mega-col + .mega-col { border-left: 1px solid var(--border); padding-left: 20px; }
.mega-col a { text-decoration: none; }
.mega-cat-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px;
  border-radius: var(--radius-sm);
  transition: all .2s;
  margin-bottom: 4px;
}
.mega-cat-item:hover { background: #fff; box-shadow: var(--shadow); }
.mega-cat-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(14,76,77,.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.mega-cat-item strong { display: block; font-size: 14px; color: var(--text); font-weight: 600; }
.mega-cat-item small { display: block; font-size: 12px; color: var(--text-muted); line-height: 1.4; }
.mega-post-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  transition: all .2s;
  color: var(--text-secondary);
}
.mega-post-item:hover { background: #fff; box-shadow: var(--shadow); color: var(--primary); }
.mega-post-title { font-size: 14px; line-height: 1.4; }
.mega-post-date { font-size: 12px; color: var(--text-muted); flex-shrink: 0; }
.mega-cta-card {
  background: var(--bg-dark);
  border-radius: var(--radius-sm);
  padding: 20px 18px;
  height: 100%;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 10px;
  position: relative;
  overflow: hidden;
}
.mega-cta-card::after {
  content: '';
  position: absolute;
  right: -20px;
  bottom: -20px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(201,147,59,.2);
}
.mega-cta-icon { font-size: 28px; color: var(--accent); }
.mega-cta-card p { color: #D6DED9; font-size: 14px; line-height: 1.6; margin: 0; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
}

/* ========= 面包屑 ========= */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; transition: color .2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 10px; color: #BCC1BA; }
.breadcrumb .current { color: var(--text-secondary); }

/* ========= 文章 Hero 横幅 ========= */
.article-hero {
  background:
    linear-gradient(135deg, rgba(247,245,240,.94) 0%, rgba(240,242,234,.92) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 44px 0 36px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.article-hero .container { max-width: 1000px; }
.article-header-title {
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 14px;
  letter-spacing: -.01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item + .meta-item {
  margin-left: 8px;
  padding-left: 16px;
  border-left: 1px solid var(--border);
}

/* ========= 文章内容区 ========= */
.article-wrap { padding: 40px 0 64px; }
.article-content { max-width: var(--content-max); margin: 0 auto; }
.article-entry {
  background: #fff;
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 48px 56px;
  box-shadow: var(--shadow);
}
.article-entry > * + * { margin-top: 1.1em; }
.article-entry h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-top: 1.8em;
  padding-bottom: .5em;
  border-bottom: 1px solid var(--border);
  line-height: 1.4;
}
.article-entry h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-top: 1.6em;
  margin-bottom: .6em;
  line-height: 1.4;
}
.article-entry p {
  font-size: 17px;
  line-height: 1.9;
  color: #2A3030;
  margin-bottom: 1.2em;
}
.article-entry a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(14,76,77,.3); }
.article-entry a:hover { color: var(--primary-dark); text-decoration-color: var(--primary); }
.article-entry ul, .article-entry ol { margin: 1.2em 0; padding-left: 1.5em; }
.article-entry ul li, .article-entry ol li { margin-bottom: .5em; line-height: 1.8; font-size: 16px; }
.article-entry ul li::marker { color: var(--primary); }
.article-entry blockquote {
  background: #F7F4EE;
  border-left: 4px solid var(--accent);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 16px;
}
.article-entry blockquote p { margin: 0; font-size: 16px; }
.article-entry img { border-radius: var(--radius-sm); margin: 24px 0; }
.article-entry table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.article-entry table th,
.article-entry table td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; line-height: 1.6; }
.article-entry table th { background: #F7F4EE; font-weight: 600; }
.article-entry hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }

/* ========= 空状态 ========= */
.not-found-state {
  background: #fff;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 64px 40px;
  text-align: center;
  box-shadow: var(--shadow);
}
.not-found-icon { font-size: 48px; color: var(--text-muted); margin-bottom: 16px; }
.not-found-state h2 { font-size: 24px; margin-bottom: 10px; color: var(--text); }
.not-found-state p { color: var(--text-secondary); margin-bottom: 24px; }

/* ========= 文章页脚 ========= */
.article-footer { margin-top: 28px; }
.post-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.tags-label { font-size: 14px; color: var(--text-muted); }
.post-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  background: rgba(14,76,77,.06);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  border: 1px solid transparent;
  transition: all .2s;
}
.post-tag:hover { background: rgba(14,76,77,.12); color: var(--primary); border-color: rgba(14,76,77,.15); }
.post-nav {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
}
.post-nav-link {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 16px 20px;
  background: #fff;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-card);
  text-decoration: none;
  transition: all .25s ease;
  min-height: 72px;
  justify-content: center;
}
.post-nav-link:hover { border-color: var(--primary-light); background: #FDFDFB; transform: translateY(-2px); box-shadow: var(--shadow); }
.post-nav-link.next { text-align: right; align-items: flex-end; }
.post-nav-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.post-nav-title { font-size: 15px; font-weight: 500; color: var(--text); line-height: 1.4; }
.post-back { text-align: center; margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--border); }

/* ========= 相关推荐 ========= */
.related-section { background: #fff; border-top: 1px solid var(--border); padding: 56px 0 64px; }
.related-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; flex-wrap: wrap; gap: 12px; }
.related-title { font-size: 24px; font-weight: 700; }
.related-more { font-size: 14px; color: var(--text-muted); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.related-more:hover { color: var(--primary); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .3s ease;
  text-decoration: none;
  box-shadow: var(--shadow);
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-card-image { height: 150px; background: #E8EFE7; position: relative; overflow: hidden; }
.related-card-image::after { content: ''; position: absolute; inset: 0; background: rgba(14,76,77,.04); }
.related-card-image img { width: 100%; height: 100%; object-fit: cover; }
.related-card-body { padding: 18px 20px; }
.related-card-title { font-size: 16px; font-weight: 600; color: var(--text); line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-date { font-size: 13px; color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; }

/* ========= CTA 区块 ========= */
.cta-section { background: var(--bg-dark); padding: 48px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, var(--accent), transparent); }
.cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 32px; position: relative; z-index: 1; }
.cta-title { font-size: 26px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.cta-desc { color: #AEB8B4; font-size: 15px; line-height: 1.6; max-width: 420px; }
.cta-actions { display: flex; gap: 16px; flex-shrink: 0; }

/* ========= 页脚 ========= */
.site-footer { background: var(--bg-dark); color: #AEB8B4; padding: 60px 0 0; }
.footer-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.4fr .8fr .9fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-col h3 { color: #fff; font-size: 18px; font-weight: 700; display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-col h4 { color: #E8ECE9; font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-col p { font-size: 14px; line-height: 1.7; margin-bottom: 8px; color: #AEB8B4; }
.footer-col a { display: block; color: #AEB8B4; text-decoration: none; font-size: 14px; padding: 4px 0; transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-domain {
  display: inline-block;
  margin-top: 12px;
  padding: 3px 12px;
  border: 1px solid #2A3333;
  border-radius: 4px;
  font-size: 12px;
  color: #8B9595;
}
.footer-bottom { border-top: 1px solid #20292A; text-align: center; padding: 20px 0; font-size: 13px; color: #7A8484; }

/* ========= 浮动 CTA ========= */
.float-cta {
  position: fixed;
  right: 30px;
  bottom: 30px;
  z-index: 999;
  background: var(--accent);
  color: #1F2424;
  padding: 14px 24px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 16px rgba(201,147,59,.35);
  transition: all .3s ease;
}
.float-cta:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(201,147,59,.45); }
.float-cta i { animation: ctaPulse 2.4s ease infinite; }
@keyframes ctaPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.12); }
}

/* ========= 响应式 ========= */
@media (max-width: 1024px) {
  .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 12px 20px 20px; box-shadow: 0 12px 32px rgba(0,0,0,.06); z-index: 999; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .main-nav a { padding: 12px 14px; font-size: 16px; }
  .main-nav .nav-item.active a { background: rgba(14,76,77,.07); }
  .nav-toggle { display: flex; }
  .mega-wrap { display: none; }
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-desc { max-width: 100%; margin: 0 auto; }
  .cta-actions { justify-content: center; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .article-entry { padding: 36px 32px; }
}

@media (max-width: 768px) {
  .header-inner { height: 64px; gap: 12px; }
  .brand-name { font-size: 15px; }
  .brand-domain { display: none; }
  .article-hero { padding: 32px 0 28px; }
  .article-wrap { padding: 24px 0 48px; }
  .article-entry { padding: 28px 20px; border-radius: var(--radius-sm); }
  .article-entry p { font-size: 16px; }
  .article-entry ul, .article-entry ol { padding-left: 1.2em; }
  .post-nav { flex-direction: column; }
  .post-nav-link.next { text-align: left; align-items: flex-start; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { width: 100%; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .float-cta { right: 16px; bottom: 16px; padding: 12px 18px; font-size: 14px; }
  .float-cta span { display: none; }
  .float-cta { width: 48px; height: 48px; border-radius: 50%; justify-content: center; padding: 0; }
}

/* roulang page: category2 */
:root {
            --primary: #0E4C4D;
            --primary-dark: #093736;
            --accent: #C9933B;
            --accent-light: #DDB45F;
            --alert: #E2624A;
            --bg: #F7F5F0;
            --card: #FFFFFF;
            --ink: #1F2424;
            --ink-2: #4A5656;
            --ink-3: #8B9595;
            --border: #E4E0D8;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 2px 8px rgba(20, 26, 26, .04), 0 8px 24px rgba(20, 26, 26, .06);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, .12);
            --transition: .25s ease;
            --container: 1200px;
            --space-lg: 96px;
            --space-md: 60px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.8;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            padding: 12px 24px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            text-align: center;
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 15px 32px;
            font-size: 16px;
        }

        .btn-block {
            width: 100%;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(14, 76, 77, .22);
        }

        .btn-primary:active {
            transform: scale(.97);
        }

        .btn-accent {
            background: var(--accent);
            color: #1F2424;
            border-color: var(--accent);
        }

        .btn-accent:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: #1F2424;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(201, 147, 59, .35);
        }

        .btn-accent:active {
            transform: scale(.97);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(.97);
        }

        .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, .7);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(6px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(20, 26, 26, .04);
        }

        .header-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
            position: relative;
        }

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

        .brand-mark {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 2px 6px rgba(14, 76, 77, .25);
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: .5px;
            line-height: 1.2;
        }

        .brand-domain {
            font-size: 12px;
            color: var(--ink-3);
            background: var(--bg);
            padding: 2px 8px;
            border-radius: 4px;
            border: 1px solid var(--border);
            white-space: nowrap;
        }

        .main-nav {
            flex: 1;
            display: flex;
            justify-content: center;
        }

        .main-nav ul {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            gap: 6px;
        }

        .main-nav .nav-item a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-2);
            border-radius: 6px;
            position: relative;
            transition: all .2s ease;
        }

        .main-nav .nav-item a:hover {
            color: var(--primary);
            background: rgba(14, 76, 77, .06);
        }

        .main-nav .nav-item a::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transition: transform .25s ease;
        }

        .main-nav .nav-item a:hover::after {
            transform: scaleX(1);
        }

        .main-nav .nav-item.active a {
            color: var(--primary);
            font-weight: 700;
            background: rgba(14, 76, 77, .08);
        }

        .main-nav .nav-item.active a::after {
            transform: scaleX(1);
        }

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

        .mega-trigger {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--card);
            color: var(--ink);
            font-size: 16px;
            cursor: pointer;
            transition: all .2s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .mega-trigger:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: rotate(90deg);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--card);
            color: var(--ink);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        .mega-panel {
            position: absolute;
            top: 72px;
            right: 24px;
            width: 720px;
            max-width: calc(100vw - 48px);
            background: #FDFCF9;
            border: 1px solid var(--border);
            border-radius: 0 0 var(--radius) var(--radius);
            box-shadow: var(--shadow-lg);
            padding: 28px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all .3s ease;
            z-index: 999;
            border-top: 2px solid var(--accent);
        }

        .mega-panel.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-inner {
            display: grid;
            grid-template-columns: 1fr 1fr 1.1fr;
            gap: 24px;
        }

        .mega-col h4 {
            font-size: 14px;
            color: var(--ink-3);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin: 0 0 14px;
            font-weight: 700;
        }

        .mega-col a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 12px;
            border-radius: 8px;
            color: var(--ink-2);
            font-size: 14px;
            transition: all .2s ease;
            background: #fff;
            margin-bottom: 6px;
            border: 1px solid transparent;
        }

        .mega-col a:hover {
            background: var(--card);
            border-color: var(--border);
            color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-1px);
        }

        .mega-col a i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }

        .mega-col a .fa-arrow-right {
            margin-left: auto;
            font-size: 12px;
            color: var(--ink-3);
        }

        .mega-col.mega-cta {
            background: var(--primary);
            border-radius: var(--radius);
            padding: 22px;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .mega-col.mega-cta h4 {
            color: rgba(255, 255, 255, .8);
            margin-bottom: 6px;
        }

        .mega-col.mega-cta p {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .mega-col.mega-cta .btn {
            width: 100%;
            justify-content: center;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 150px 0 90px;
            overflow: hidden;
            background: linear-gradient(135deg, #EEF2F0 0%, #F7F5F0 60%, #FBF6EC 100%);
            border-bottom: 1px solid var(--border);
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: .22;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, rgba(247, 245, 240, .94) 0%, rgba(247, 245, 240, .75) 55%, rgba(247, 245, 240, .35) 100%);
            z-index: 1;
        }

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

        .hero-inner {
            max-width: 680px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 30px;
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            box-shadow: var(--shadow);
            margin-bottom: 22px;
        }

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

        .hero-inner h1 {
            font-size: 42px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -0.5px;
            margin: 0 0 18px;
        }

        .hero-inner h1 span {
            color: var(--primary);
        }

        .hero-inner p {
            font-size: 18px;
            line-height: 1.9;
            color: var(--ink-2);
            margin: 0 0 32px;
        }

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

        /* ===== Security Content Section ===== */
        .security-content {
            padding: var(--space-lg) 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

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

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--ink);
            margin: 0 0 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--ink-2);
            max-width: 600px;
            margin: 0 auto;
        }

        .split-layout {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 48px;
            align-items: start;
        }

        .split-main {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        /* Post cards */
        .post-card {
            display: flex;
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid #EDEAE3;
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all .3s ease;
        }

        .post-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 6px 16px rgba(20, 26, 26, .08), 0 16px 40px rgba(20, 26, 26, .1);
            border-color: var(--primary);
        }

        .post-thumb {
            position: relative;
            width: 260px;
            flex-shrink: 0;
            overflow: hidden;
            background: #EDEAE3;
            min-height: 100%;
        }

        .post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .post-card:hover .post-thumb img {
            transform: scale(1.05);
        }

        .post-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: #1F2424;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            box-shadow: 0 2px 6px rgba(201, 147, 59, .4);
            z-index: 2;
        }

        .post-body {
            padding: 28px 30px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .post-body h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.45;
            margin: 0 0 10px;
        }

        .post-body h3 a {
            color: var(--ink);
            transition: color .2s ease;
        }

        .post-body h3 a:hover {
            color: var(--primary);
        }

        .post-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--ink-3);
            margin-bottom: 12px;
        }

        .post-meta i {
            margin-right: 4px;
            color: var(--accent);
        }

        .meta-divider {
            color: var(--border);
        }

        .post-excerpt {
            font-size: 15px;
            color: var(--ink-2);
            line-height: 1.8;
            margin: 0 0 18px;
            flex: 1;
        }

        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: all .2s ease;
        }

        .read-more:hover {
            gap: 12px;
            color: var(--accent);
        }

        .read-more i {
            transition: transform .2s ease;
        }

        /* Sidebar */
        .split-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 96px;
        }

        .side-card {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid #EDEAE3;
            box-shadow: var(--shadow);
            padding: 26px;
        }

        .side-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin: 0 0 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .side-card h4 i {
            color: var(--accent);
            font-size: 15px;
        }

        .security-check-card p {
            font-size: 14px;
            color: var(--ink-2);
            margin-bottom: 18px;
        }

        .check-item {
            margin-bottom: 16px;
        }

        .check-label {
            display: flex;
            justify-content: space-between;
            font-size: 13px;
            color: var(--ink-2);
            margin-bottom: 6px;
        }

        .check-label span:last-child {
            font-weight: 600;
            color: var(--primary);
        }

        .progress-bar {
            height: 8px;
            background: #F0EEE9;
            border-radius: 8px;
            overflow: hidden;
        }

        .progress-bar span {
            display: block;
            height: 100%;
            border-radius: 8px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            display: inline-block;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 5px 14px;
            font-size: 13px;
            color: var(--ink-2);
            cursor: pointer;
            transition: all .2s ease;
        }

        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .side-post {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid #F0EEE9;
            transition: all .2s ease;
        }

        .side-post:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .side-post:hover {
            padding-left: 6px;
        }

        .side-post-title {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 4px;
            line-height: 1.5;
            transition: color .2s ease;
        }

        .side-post:hover .side-post-title {
            color: var(--primary);
        }

        .side-post-date {
            font-size: 12px;
            color: var(--ink-3);
        }

        .side-cta-card {
            background: var(--primary);
            border: none;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .side-cta-card::after {
            content: '';
            position: absolute;
            right: -30px;
            top: -30px;
            width: 100px;
            height: 100px;
            background: rgba(255, 255, 255, .06);
            border-radius: 50%;
        }

        .side-cta-card h4 {
            color: #fff;
        }

        .side-cta-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, .75);
            margin-bottom: 18px;
        }

        /* ===== CTA Band ===== */
        .cta-band {
            background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-band::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 260px;
            height: 260px;
            background: rgba(201, 147, 59, .15);
            border-radius: 50%;
        }

        .cta-band::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, .05);
            border-radius: 50%;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            margin: 0 0 14px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, .8);
            margin: 0 auto 30px;
            max-width: 520px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: #141A1A;
            color: #8B9595;
            padding-top: 60px;
            border-top: 3px solid var(--accent);
        }

        .footer-main {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px 40px;
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr 1.2fr;
            gap: 40px;
        }

        .footer-col h3 {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin: 0 0 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
        }

        .footer-col p {
            font-size: 14px;
            line-height: 1.8;
            margin: 0 0 10px;
            color: #8B9595;
        }

        .footer-domain {
            display: inline-block;
            background: rgba(255, 255, 255, .08);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 13px;
            color: rgba(255, 255, 255, .6);
            margin-top: 6px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: rgba(255, 255, 255, .9);
            margin: 0 0 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: #8B9595;
            padding: 6px 0;
            transition: all .2s ease;
        }

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

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

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
            margin: 0;
        }

        /* ===== Floating CTA ===== */
        .floating-cta {
            position: fixed;
            right: 30px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1F2424;
            padding: 14px 24px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 8px 26px rgba(201, 147, 59, .5);
            text-decoration: none;
            animation: pulseShadow 2.4s ease-in-out infinite;
            transition: all .3s ease;
        }

        .floating-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(201, 147, 59, .6);
            background: var(--accent-light);
            color: #1F2424;
        }

        .floating-cta:active {
            transform: scale(.95);
        }

        @keyframes pulseShadow {
            0%,
            100% {
                box-shadow: 0 8px 26px rgba(201, 147, 59, .5);
            }
            50% {
                box-shadow: 0 8px 30px rgba(201, 147, 59, .7);
            }
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .split-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .split-side {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .side-cta-card {
                grid-column: span 2;
            }
            .footer-main {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 820px) {
            .header-wrap {
                height: 64px;
            }
            .nav-toggle {
                display: flex;
            }
            .header-actions {
                display: none;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                transition: transform .3s ease;
                opacity: 0;
                visibility: hidden;
                overflow-y: auto;
                max-height: calc(100vh - 64px);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 4px;
                width: 100%;
            }
            .main-nav .nav-item a {
                display: block;
                padding: 14px 16px;
                font-size: 16px;
                border-radius: 8px;
            }
            .main-nav .nav-item.active a {
                background: rgba(14, 76, 77, .1);
            }
            .mega-panel {
                display: none;
                position: static;
                width: 100%;
                max-width: none;
                padding: 0;
                border: none;
                box-shadow: none;
                background: transparent;
                transform: none;
                opacity: 1;
                visibility: visible;
            }
            .mega-panel.show {
                display: block;
            }
            .mega-inner {
                grid-template-columns: 1fr;
                gap: 12px;
                padding: 12px 0;
            }
            .mega-col.mega-cta {
                margin-top: 12px;
            }
            .page-hero {
                padding: 120px 0 60px;
            }
            .hero-inner h1 {
                font-size: 32px;
            }
            .hero-inner p {
                font-size: 16px;
            }
            .post-card {
                flex-direction: column;
            }
            .post-thumb {
                width: 100%;
                height: 200px;
            }
            .post-thumb img {
                height: 100%;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 18px;
            }
            .brand-name {
                font-size: 17px;
            }
            .brand-domain {
                display: none;
            }
            .page-hero {
                padding: 110px 0 50px;
            }
            .hero-inner h1 {
                font-size: 27px;
                line-height: 1.35;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .security-content {
                padding: 60px 0;
            }
            .split-side {
                grid-template-columns: 1fr;
            }
            .side-cta-card {
                grid-column: auto;
            }
            .post-body {
                padding: 20px;
            }
            .post-body h3 {
                font-size: 17px;
            }
            .post-excerpt {
                font-size: 14px;
            }
            .post-meta {
                flex-wrap: wrap;
            }
            .cta-band {
                padding: 48px 0;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-buttons .btn {
                width: 100%;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .floating-cta {
                right: 18px;
                bottom: 18px;
                padding: 13px 18px;
                font-size: 14px;
            }
            .floating-cta .cta-text {
                display: none;
            }
            .floating-cta {
                width: 54px;
                height: 54px;
                padding: 0;
                justify-content: center;
                border-radius: 50%;
            }
            .floating-cta i {
                font-size: 22px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #0E4C4D;
  --primary-dark: #0A3B3C;
  --primary-light: #E8F0EE;
  --accent: #C9933B;
  --accent-dark: #A87A2E;
  --accent-light: #F9F0E2;
  --coral: #E2624A;
  --bg: #F7F5F0;
  --card-bg: #FFFFFF;
  --dark: #141A1A;
  --text: #1F2424;
  --text-secondary: #4A5656;
  --text-muted: #8B9595;
  --border: #E4E0D8;
  --line: #EDEAE3;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(20,26,26,.04), 0 8px 24px rgba(20,26,26,.06);
  --shadow-lg: 0 12px 32px rgba(20,26,26,.10);
  --shadow-accent: 0 6px 18px rgba(201,147,59,.38);
  --transition: .25s ease;
  --container: 1200px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
ul, ol {
  list-style: none;
}
button, input, select, textarea {
  font-family: inherit;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 88px 0;
}
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.kicker {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 20px;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text);
}
.section-head p {
  color: var(--text-secondary);
  max-width: 580px;
  margin: 12px auto 0;
  font-size: 16px;
}

/* ===== Header & Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--primary);
  flex-shrink: 0;
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #1A6B6B);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.main-nav {
  margin-left: auto;
}
.main-nav ul {
  display: flex;
  gap: 28px;
}
.main-nav a {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
  display: inline-block;
  line-height: 70px;
  border-bottom: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}
.main-nav a:hover {
  color: var(--primary);
  border-bottom-color: var(--accent);
}
.main-nav a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}
.main-nav .nav-item.active a {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--primary);
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===== Category Hero ===== */
.cat-hero {
  background: linear-gradient(120deg, rgba(14,76,77,.92) 0%, rgba(14,76,77,.82) 60%), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color: #fff;
  padding: 96px 0 90px;
  position: relative;
  overflow: hidden;
}
.cat-hero::after {
  content: '';
  position: absolute;
  width: 440px;
  height: 440px;
  right: -100px;
  top: -100px;
  background: radial-gradient(circle, rgba(201,147,59,.30), transparent 65%);
  border-radius: 50%;
  z-index: 0;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.cat-hero h1 {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.cat-hero .sub {
  font-size: 17px;
  color: rgba(255,255,255,.9);
  max-width: 520px;
  margin-bottom: 34px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
  line-height: 1;
}
.btn:active {
  transform: scale(.97);
}
.btn:focus-visible {
  outline: 3px solid rgba(201,147,59,.55);
  outline-offset: 2px;
  border-radius: 8px;
}
.btn-accent {
  background: var(--accent);
  color: var(--dark);
}
.btn-accent:hover {
  background: #dba447;
  box-shadow: var(--shadow-accent);
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.55);
}
.btn-outline-light:hover {
  border-color: #fff;
  background: rgba(255,255,255,.08);
}
.hero-quick-card {
  background: rgba(255,255,255,.98);
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 16px 48px rgba(0,0,0,.20);
  color: var(--text);
}
.quick-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 8px;
}
.quick-card-head i {
  color: var(--accent);
  font-size: 16px;
}
.hero-quick-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
}
.quick-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.quick-tags a {
  display: inline-block;
  padding: 8px 15px;
  border-radius: 8px;
  background: #F1EFEA;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all .2s;
}
.quick-tags a:hover {
  background: var(--primary);
  color: #fff;
}
.quick-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 20px;
  border-top: 1px dashed var(--border);
  padding-top: 14px;
}

/* ===== Problem Overview ===== */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.problem-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease;
  display: flex;
  flex-direction: column;
}
.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.problem-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.problem-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}
.problem-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  flex-grow: 1;
}
.problem-tag {
  display: inline-block;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 4px;
  background: var(--bg);
  color: var(--text-muted);
  margin-top: 16px;
  align-self: flex-start;
  font-weight: 500;
}

/* ===== Steps ===== */
.troubleshoot-steps {
  background: var(--dark);
  color: #fff;
  padding: 88px 0;
}
.troubleshoot-steps .section-head h2 {
  color: #fff;
}
.troubleshoot-steps .section-head p {
  color: rgba(255,255,255,.65);
}
.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}
.step-item {
  text-align: center;
  padding: 30px 18px;
  position: relative;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 16px;
  transition: transform .25s, background .25s;
}
.step-item:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,.07);
}
.step-num {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--dark);
  font-weight: 800;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 4px 18px rgba(201,147,59,.35);
}
.step-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #fff;
}
.step-item p {
  color: rgba(255,255,255,.68);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== Comparison Table ===== */
.table-wrap {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
}
.compare-table th {
  background: var(--primary);
  color: #fff;
  padding: 16px 22px;
  text-align: left;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .5px;
}
.compare-table td {
  padding: 16px 22px;
  border-bottom: 1px solid #F1EEE8;
  font-size: 15px;
  color: var(--text-secondary);
}
.compare-table tr:last-child td {
  border-bottom: none;
}
.compare-table tr:hover td {
  background: #FAF8F3;
}
.compare-table .symptom {
  color: var(--text);
  font-weight: 600;
}
.compare-table .action {
  color: var(--primary);
  font-weight: 500;
}
.compare-table .tag-warn {
  display: inline-block;
  font-size: 12px;
  background: #FCEAE5;
  color: var(--coral);
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 600;
  margin-right: 6px;
}
.table-scroll {
  overflow-x: auto;
}

/* ===== Resource Cards ===== */
.resource-section {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.resource-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s;
}
.resource-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.resource-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: #E8E4DC;
}
.resource-body {
  padding: 24px 26px 28px;
}
.resource-card .tag {
  display: inline-block;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 4px;
  background: var(--primary-light);
  color: var(--primary);
  margin-bottom: 12px;
  font-weight: 600;
}
.resource-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.resource-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}
.resource-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  transition: color .2s;
}
.resource-link i {
  font-size: 13px;
  transition: transform .2s;
}
.resource-link:hover {
  color: var(--accent-dark);
}
.resource-link:hover i {
  transform: translateX(4px);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 840px;
  margin: 0 auto;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(20,26,26,.03);
  transition: border-color .2s;
}
.faq-item[open] {
  border-color: rgba(14,76,77,.3);
}
.faq-item summary {
  padding: 20px 26px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
  color: var(--text);
  transition: color .2s;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  color: var(--accent);
  font-weight: 400;
  line-height: 1;
  transition: transform .3s ease, color .2s;
  flex-shrink: 0;
}
.faq-item[open] summary {
  color: var(--primary);
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-item summary:hover {
  color: var(--primary);
}
.faq-item summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  border-radius: var(--radius);
}
.faq-answer {
  padding: 18px 26px 24px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.85;
  border-top: 1px solid #F1EEE8;
  background: #FAF9F6;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(105deg, var(--primary) 0%, #1B6B6B 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  width: 360px;
  height: 360px;
  left: -120px;
  bottom: -160px;
  background: radial-gradient(circle, rgba(201,147,59,.30), transparent 60%);
}
.cta-inner {
  position: relative;
  z-index: 1;
}
.cta-inner h2 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-inner p {
  color: rgba(255,255,255,.85);
  max-width: 600px;
  margin: 0 auto 30px;
  font-size: 16px;
}
.cta-meta {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-top: 24px;
  font-size: 13px;
  color: rgba(255,255,255,.7);
  flex-wrap: wrap;
}
.cta-meta span i {
  color: var(--accent);
  margin-right: 5px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: #9DA8A8;
  padding-top: 64px;
}
.footer-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 44px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
}
.footer-col h4 {
  color: #E8EEEE;
  margin-bottom: 18px;
  font-size: 15px;
  font-weight: 600;
}
.footer-col a {
  display: block;
  color: #9DA8A8;
  font-size: 14px;
  padding-bottom: 10px;
  transition: color .2s;
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-col p {
  font-size: 14px;
  margin-bottom: 10px;
  color: #9DA8A8;
}
.footer-brand-col h3 {
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  margin-bottom: 14px;
  font-weight: 800;
}
.footer-brand-col p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 16px;
  color: #9DA8A8;
}
.footer-domain {
  font-size: 13px;
  color: #6F7B7B;
  background: rgba(255,255,255,.06);
  padding: 4px 12px;
  border-radius: 6px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center;
  padding: 20px 24px;
  font-size: 13px;
  color: #6F7B7B;
}

/* ===== Float CTA ===== */
.float-cta {
  position: fixed;
  right: 30px;
  bottom: 30px;
  z-index: 90;
  background: var(--accent);
  color: var(--dark);
  border-radius: 50px;
  padding: 0 22px;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 6px 24px rgba(201,147,59,.45);
  transition: transform .25s, box-shadow .25s;
  animation: pulseGlow 3s ease-in-out infinite alternate;
}
.float-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(201,147,59,.55);
}
.float-cta:focus-visible {
  outline: 3px solid rgba(201,147,59,.55);
  outline-offset: 2px;
}
@keyframes pulseGlow {
  0% { box-shadow: 0 6px 24px rgba(201,147,59,.40); }
  100% { box-shadow: 0 6px 32px rgba(201,147,59,.65); }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .problem-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .step-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .resource-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    display: none;
    padding: 8px 24px 16px;
    box-shadow: 0 16px 32px rgba(0,0,0,.08);
  }
  .main-nav.open {
    display: block;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }
  .main-nav a {
    line-height: 48px;
    display: block;
    border-bottom: none;
    border-left: 3px solid transparent;
    padding-left: 12px;
  }
  .main-nav a:hover {
    border-left-color: var(--accent);
    border-bottom-color: transparent;
  }
  .main-nav .nav-item.active a {
    border-left-color: var(--primary);
    border-bottom-color: transparent;
  }
  .cat-hero {
    padding: 72px 0 64px;
  }
  .cat-hero h1 {
    font-size: 32px;
  }
  .section {
    padding: 64px 0;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .float-cta {
    right: 16px;
    bottom: 16px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 20px;
  }
  .problem-grid {
    grid-template-columns: 1fr;
  }
  .step-grid {
    grid-template-columns: 1fr;
  }
  .resource-grid {
    grid-template-columns: 1fr;
  }
  .cat-hero h1 {
    font-size: 28px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .float-cta {
    width: 52px;
    padding: 0;
    justify-content: center;
  }
  .float-cta span {
    display: none;
  }
  .compare-table th,
  .compare-table td {
    padding: 14px 16px;
    font-size: 14px;
    white-space: nowrap;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}