/* roulang page: index */
:root {
  --color-primary: #0F63CC;
  --color-primary-dark: #0B4FA5;
  --color-primary-light: #EBF3FC;
  --color-accent: #E8B93B;
  --color-accent-dark: #B8860B;
  --color-success: #2C9A68;
  --color-text-1: #172033;
  --color-text-2: #526078;
  --color-text-3: #8A94A6;
  --color-border: #E1E7EF;
  --color-bg: #F5F8FC;
  --color-surface: #FFFFFF;
  --color-footer-bg: #16233B;
  --color-footer-text: #AAB4C4;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 6px 20px rgba(20,32,56,0.06);
  --shadow-hover: 0 12px 32px rgba(20,32,56,0.10);
  --shadow-btn: 0 4px 12px rgba(15,99,204,0.25);
  --shadow-btn-hover: 0 8px 20px rgba(15,99,204,0.35);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --space-section: 96px;
  --space-section-mobile: 48px;
  --container-max: 1200px;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-1);
  background-color: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(circle at 85% 10%, rgba(15, 99, 204, 0.04) 0px, transparent 50%);
}

img { max-width: 100%; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }
button { cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 15px; }

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

::selection {
  background: rgba(15, 99, 204, 0.15);
  color: var(--color-text-1);
}

/* ===== Foundation 重置覆盖 ===== */
.row { max-width: var(--container-max); margin: 0 auto; }
.column, .columns { padding-left: 16px; padding-right: 16px; }
@media (min-width: 1024px) {
  .row { width: 100%; }
}

/* ===== App Shell 导航 ===== */
.app-shell {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: width var(--transition), transform var(--transition);
  box-shadow: 1px 0 10px rgba(0,0,0,0.02);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 80px;
  padding: 0 24px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(15,99,204,0.3);
  flex-shrink: 0;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text-1);
  white-space: nowrap;
  letter-spacing: -0.2px;
}

.side-nav {
  flex: 1;
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-2);
  transition: background var(--transition), color var(--transition);
  border-left: 3px solid transparent;
}

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

.nav-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
  border-left-color: var(--color-primary);
}

.nav-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.nav-text {
  white-space: nowrap;
  overflow: hidden;
}

.side-footer-info {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-text-3);
}

.side-footer-info .status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  margin-right: 6px;
  vertical-align: middle;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ===== 移动端顶部栏 ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

.mobile-brand {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text-1);
  display: flex;
  align-items: center;
  gap: 8px;
}

.mobile-brand .brand-icon {
  width: 28px;
  height: 28px;
  font-size: 14px;
}

.hamburger {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  background: var(--color-surface);
  color: var(--color-text-1);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.hamburger:hover {
  background: var(--color-primary-light);
}

.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(22, 35, 59, 0.5);
  z-index: 1500;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.drawer-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 82%;
  max-width: 320px;
  height: 100vh;
  background: var(--color-surface);
  z-index: 1501;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
}

.drawer-menu.active {
  transform: translateX(0);
}

.drawer-menu .brand {
  padding: 0 8px;
  height: 60px;
  margin-bottom: 16px;
}

.drawer-menu .nav-item {
  padding: 14px 16px;
  font-size: 16px;
}

/* ===== 主内容区 ===== */
.main-wrapper {
  margin-left: 260px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition);
}

.main-content {
  flex: 1;
  padding-bottom: 0;
}

/* ===== 通用区块 ===== */
.section {
  padding: var(--space-section) 0;
  position: relative;
}

.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 14px;
  border-radius: var(--radius-tag);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text-1);
  line-height: 1.3;
  letter-spacing: -0.3px;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 16px;
  color: var(--color-text-2);
  line-height: 1.7;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 96px 0;
  background: linear-gradient(135deg, #F0F6FE 0%, #F5F8FC 40%, #EBF3FC 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -40px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(15,99,204,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, rgba(245,248,252,1) 0%, transparent 100%);
  pointer-events: none;
}

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

.hero-content {
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-tag);
  padding: 6px 18px;
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
}

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

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.8px;
  color: var(--color-text-1);
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 17px;
  color: var(--color-text-2);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero-actions .button {
  margin-bottom: 0;
}

.hero-visual {
  position: relative;
  padding: 0 24px;
}

.hero-visual .visual-frame {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  position: relative;
}

.hero-visual .visual-frame img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

.hero-visual .visual-caption {
  padding: 16px 20px;
  background: var(--color-surface);
  font-size: 13px;
  color: var(--color-text-2);
  border-top: 1px solid var(--color-border);
}

.hero-stats {
  display: flex;
  gap: 30px;
  margin-top: 28px;
  padding: 16px 24px;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  flex-wrap: wrap;
}

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

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

.stat-item .stat-label {
  font-size: 12px;
  color: var(--color-text-3);
  margin-top: 4px;
}

/* ===== 按钮 ===== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all var(--transition);
  line-height: 1;
  text-decoration: none;
}

.button i {
  font-size: 14px;
}

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

.button.primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-btn-hover);
}

.button.secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.button.secondary:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.button.large {
  height: 50px;
  padding: 0 36px;
  font-size: 16px;
}

.button.full-width {
  width: 100%;
  height: 52px;
  font-size: 16px;
}

/* ===== 议程时间线 ===== */
.agenda-section {
  background: var(--color-surface);
}

.agenda-grid {
  margin-top: 24px;
}

.agenda-day {
  padding: 0 24px;
}

.agenda-day-label {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-accent-dark);
  font-weight: 700;
  font-size: 14px;
  padding: 6px 20px;
  border-radius: var(--radius-btn);
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(232,185,59,0.25);
}

.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--color-border) 0px, var(--color-border) 4px, transparent 4px, transparent 8px);
}

.timeline-item {
  position: relative;
  margin-bottom: 28px;
  padding: 20px;
  background: var(--color-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.timeline-item:hover {
  box-shadow: var(--shadow-hover);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15,99,204,0.15);
}

.timeline-time {
  display: inline-flex;
  align-items: center;
  background: var(--color-accent);
  color: #5A4A1A;
  font-size: 13px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  margin-bottom: 10px;
  letter-spacing: 0.3px;
}

.timeline-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-1);
  margin-bottom: 6px;
  line-height: 1.4;
}

.timeline-speaker {
  font-size: 14px;
  color: var(--color-text-2);
  margin-bottom: 4px;
}

.timeline-location {
  font-size: 13px;
  color: var(--color-text-3);
  display: flex;
  align-items: center;
  gap: 4px;
}

.timeline-location i {
  font-size: 12px;
}

/* ===== 嘉宾板块 ===== */
.speaker-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: 24px;
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
  margin-bottom: 24px;
  height: 100%;
}

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

.speaker-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 16px;
  border: 3px solid var(--color-primary-light);
  background: var(--color-bg);
}

.speaker-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.speaker-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-1);
  margin-bottom: 4px;
}

.speaker-role {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 8px;
}

.speaker-bio {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.6;
}

/* ===== 亮点 ===== */
.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: 28px 24px;
  transition: box-shadow var(--transition), border-color var(--transition);
  margin-bottom: 24px;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 60px;
  height: 60px;
  border-radius: 0 0 0 60px;
  background: var(--color-primary-light);
  opacity: 0.5;
  transition: opacity var(--transition);
}

.feature-card:hover::after {
  opacity: 0.8;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text-1);
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.6;
}

/* ===== 票种对比 ===== */
.ticket-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.ticket-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: box-shadow var(--transition), border-color var(--transition);
  position: relative;
  margin-bottom: 24px;
}

.ticket-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}

.ticket-card.featured {
  border: 2px solid var(--color-primary);
  box-shadow: 0 8px 30px rgba(15,99,204,0.12);
}

.ticket-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #5A4A1A;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-tag);
  white-space: nowrap;
}

.ticket-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-1);
  margin-bottom: 8px;
  text-align: center;
}

.ticket-price {
  text-align: center;
  padding: 16px 0;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.ticket-price .price-symbol {
  font-size: 16px;
  color: var(--color-text-2);
  vertical-align: top;
}

.ticket-price .price-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--color-text-1);
  line-height: 1;
}

.ticket-price .price-note {
  font-size: 13px;
  color: var(--color-text-3);
  margin-top: 4px;
}

.ticket-features {
  flex: 1;
  margin-bottom: 24px;
  padding: 0 8px;
}

.ticket-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 6px 0;
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.5;
}

.ticket-features li i {
  color: var(--color-success);
  font-size: 14px;
  margin-top: 3px;
  flex-shrink: 0;
}

.ticket-card .button {
  width: 100%;
}

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

.faq-item {
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  transition: box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-1);
  transition: background var(--transition);
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-family: inherit;
}

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

.faq-question .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform var(--transition), background var(--transition);
  flex-shrink: 0;
}

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

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--color-text-2);
  line-height: 1.7;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
}

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

/* ===== 报名区块 ===== */
.register-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-primary-light) 100%);
  padding: var(--space-section) 0;
}

.register-info {
  padding-right: 32px;
}

.register-info h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text-1);
  margin-bottom: 16px;
  line-height: 1.3;
}

.register-info p {
  font-size: 16px;
  color: var(--color-text-2);
  line-height: 1.7;
  margin-bottom: 24px;
}

.register-contact-list {
  margin-top: 24px;
}

.register-contact-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 15px;
  color: var(--color-text-2);
}

.register-contact-list li i {
  width: 20px;
  text-align: center;
  color: var(--color-primary);
}

.register-form-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-primary);
  box-shadow: 0 12px 40px rgba(15,99,204,0.12);
  padding: 32px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-1);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  height: 44px;
  border: 1px solid #D5DDE8;
  border-radius: var(--radius-btn);
  padding: 0 14px;
  font-size: 15px;
  color: var(--color-text-1);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group textarea {
  height: auto;
  min-height: 100px;
  padding: 12px 14px;
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15,99,204,0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-3);
}

.form-hint {
  font-size: 12px;
  color: var(--color-text-3);
  margin-top: 6px;
}

.char-count {
  font-size: 12px;
  color: var(--color-text-3);
  text-align: right;
  margin-top: 4px;
}

.form-privacy {
  font-size: 12px;
  color: var(--color-text-3);
  text-align: center;
  margin-top: 12px;
  line-height: 1.5;
}

.form-success-alert {
  display: none;
  background: #EDF7F2;
  border: 1px solid #B5E2D0;
  color: var(--color-success);
  font-size: 14px;
  font-weight: 500;
  padding: 14px 20px;
  border-radius: var(--radius-btn);
  margin-bottom: 20px;
}

/* ===== 资讯板块 ===== */
.news-section {
  background: var(--color-bg);
}

.news-card-container {
  margin-top: 24px;
}

.news-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  border-color: var(--color-primary);
  color: var(--color-text-1);
}

.news-card-thumb {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-bg);
  position: relative;
}

.news-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.news-card:hover .news-card-thumb img {
  transform: scale(1.03);
}

.news-card-category {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  padding: 3px 12px;
  border-radius: var(--radius-tag);
  letter-spacing: 0.3px;
}

.news-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-1);
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-excerpt {
  font-size: 14px;
  color: var(--color-text-2);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

.news-card-date {
  font-size: 13px;
  color: var(--color-text-3);
  display: flex;
  align-items: center;
  gap: 6px;
}

.news-card-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-card-more i {
  font-size: 12px;
  transition: transform var(--transition);
}

.news-card:hover .news-card-more i {
  transform: translateX(3px);
}

.news-empty {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-card);
  padding: 48px 24px;
  text-align: center;
  background: transparent;
}

.news-empty .empty-icon {
  font-size: 40px;
  color: var(--color-text-3);
  margin-bottom: 12px;
  opacity: 0.5;
}

.news-empty p {
  font-size: 15px;
  color: var(--color-text-2);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding: 0 24px;
}

.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 8px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col ul li {
  padding: 5px 0;
}

.footer-col ul li a {
  color: var(--color-footer-text);
  font-size: 14px;
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--color-primary-light);
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  font-size: 14px;
}

.footer-contact li i {
  width: 16px;
  color: var(--color-primary-light);
}

.footer-bottom {
  margin-top: 48px;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ===== 中屏断点 ===== */
@media (min-width: 640px) and (max-width: 1024px) {
  .app-shell {
    width: 80px;
  }
  .brand {
    justify-content: center;
    padding: 0;
  }
  .brand-name {
    display: none;
  }
  .brand-icon {
    margin: 0 auto;
  }
  .side-nav {
    padding: 12px 8px;
  }
  .nav-item {
    justify-content: center;
    padding: 12px;
    border-left: none;
    border-radius: 8px;
  }
  .nav-text {
    display: none;
  }
  .nav-icon {
    font-size: 18px;
  }
  .side-footer-info {
    display: none;
  }
  .main-wrapper {
    margin-left: 80px;
  }
  .hero {
    padding: 64px 0;
  }
  .hero h1 {
    font-size: 34px;
  }
  .section {
    padding: 72px 0;
  }
}

/* ===== 小屏断点 ===== */
@media (max-width: 639px) {
  .app-shell {
    display: none;
  }
  .mobile-header {
    display: flex;
  }
  .main-wrapper {
    margin-left: 0;
    padding-top: 64px;
  }
  .hero {
    padding: 48px 24px;
  }
  .hero h1 {
    font-size: 28px;
    line-height: 1.3;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .button {
    width: 100%;
  }
  .section {
    padding: var(--space-section-mobile) 0;
  }
  .section-title {
    font-size: 24px;
  }
  .hero-visual {
    margin-top: 32px;
  }
  .hero-visual .visual-frame img {
    height: 200px;
  }
  .hero-stats {
    gap: 16px;
    padding: 14px 16px;
  }
  .stat-item .stat-num {
    font-size: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    padding: 16px;
    font-size: 12px;
  }
  .register-info {
    padding-right: 0;
    margin-bottom: 32px;
  }
  .register-form-card {
    padding: 20px;
  }
  .ticket-card {
    padding: 24px;
  }
  .agenda-day {
    padding: 0;
  }
  .timeline {
    padding-left: 22px;
  }
  .timeline-item {
    padding: 14px;
  }
  .timeline-item::before {
    left: -19px;
  }
  .hero-badge {
    font-size: 12px;
  }
  .news-card-thumb {
    aspect-ratio: 16 / 10;
  }
}

/* roulang page: article */
/* ========== 设计变量 ========== */
:root {
  --color-primary: #0F63CC;
  --color-primary-dark: #0B4FA5;
  --color-primary-light: #EBF3FC;
  --color-accent: #E8B93B;
  --color-success: #2C9A68;
  --color-text-1: #172033;
  --color-text-2: #526078;
  --color-text-3: #8A94A6;
  --color-border: #E1E7EF;
  --color-bg: #F5F8FC;
  --color-surface: #FFFFFF;
  --color-footer: #16233B;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 6px 20px rgba(20, 32, 56, 0.06);
  --shadow-hover: 0 12px 32px rgba(20, 32, 56, 0.10);
  --shadow-primary: 0 4px 12px rgba(15, 99, 204, 0.25);
  --shadow-primary-hover: 0 8px 20px rgba(15, 99, 204, 0.35);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", -apple-system, sans-serif;
  --space-section: 88px;
  --space-section-mobile: 48px;
  --container-max: 1200px;
  --side-width: 260px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text-1);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-1);
}

/* ========== 侧栏框架 ========== */
.side-shell {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--side-width);
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
}

.side-brand {
  height: 80px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  border-bottom: 1px solid var(--color-border);
  gap: 10px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}

.brand-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text-1);
  letter-spacing: -0.3px;
  white-space: nowrap;
}

.side-nav {
  flex: 1;
  padding: 20px 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 24px;
  margin: 2px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-2);
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
}

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

.nav-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  font-weight: 600;
}

.nav-item .nav-icon {
  width: 20px;
  text-align: center;
  font-size: 16px;
}

.side-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.side-status {
  font-size: 13px;
  color: var(--color-text-3);
  display: flex;
  align-items: center;
  gap: 6px;
}

.side-status i {
  color: var(--color-success);
  font-size: 8px;
}

/* ========== 移动端顶栏 ========== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 64px;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  z-index: 1200;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.mobile-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 800;
  color: var(--color-text-1);
}

.mobile-logo .brand-icon {
  width: 30px;
  height: 30px;
  font-size: 15px;
  border-radius: 8px;
}

.hamburger {
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-text-1);
  cursor: pointer;
  transition: all 0.2s ease;
}

.hamburger:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(22, 35, 59, 0.5);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

body.drawer-open .drawer-backdrop {
  opacity: 1;
  visibility: visible;
}

body.drawer-open .side-shell {
  transform: translateX(0);
}

/* ========== 主内容区 ========== */
.main-area {
  margin-left: var(--side-width);
  min-height: calc(100vh - 260px);
  display: flex;
  flex-direction: column;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 40px 48px 0;
  width: 100%;
}

/* ========== 面包屑 ========== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-3);
  margin-bottom: 36px;
  padding: 10px 0;
}

.breadcrumb a {
  color: var(--color-text-3);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.breadcrumb .sep {
  color: #C0C7D4;
}

.breadcrumb .current {
  color: var(--color-text-2);
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ========== 文章标题区 ========== */
.article-header {
  margin-bottom: 40px;
}

.article-header h1 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.35;
  margin-bottom: 16px;
  max-width: 840px;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 14px;
  color: var(--color-text-3);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.meta-item i {
  color: var(--color-primary);
  font-size: 14px;
}

/* ========== 正文阅读区 ========== */
.article-body {
  max-width: 780px;
  margin: 0 auto 40px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-text-1);
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 40px 48px;
  border: 1px solid var(--color-border);
}

.article-body p {
  margin-bottom: 20px;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--color-primary);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 28px 0 12px;
}

.article-body h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 20px 0 10px;
}

.article-body img {
  border-radius: 10px;
  margin: 24px auto;
  box-shadow: var(--shadow-card);
}

.article-body blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-light);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 8px 8px 0;
  color: var(--color-text-2);
}

.article-body ul,
.article-body ol {
  margin: 16px 0 20px;
  padding-left: 24px;
}

.article-body ul li {
  list-style: disc;
  margin-bottom: 8px;
}

.article-body ol li {
  list-style: decimal;
  margin-bottom: 8px;
}

.article-body code {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 14px;
}

.article-body pre {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 18px 20px;
  overflow-x: auto;
  margin: 24px 0;
}

.article-body pre code {
  background: none;
  border: none;
  padding: 0;
}

.article-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ========== 标签区 ========== */
.article-tags {
  max-width: 780px;
  margin: 0 auto 56px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-tag);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  cursor: default;
}

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

/* ========== 空态 ========== */
.article-empty {
  max-width: 780px;
  margin: 0 auto 56px;
  text-align: center;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px dashed var(--color-border);
  padding: 64px 32px;
}

.empty-icon {
  font-size: 48px;
  color: var(--color-text-3);
  margin-bottom: 16px;
}

.article-empty h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.article-empty p {
  color: var(--color-text-2);
  margin-bottom: 24px;
}

/* ========== 按钮组件 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1.2;
}

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

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-primary-hover);
}

.btn-primary:active {
  transform: translateY(0);
}

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

.btn-outline:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* ========== 相关推荐 ========== */
.related-section {
  max-width: 780px;
  margin: 0 auto 56px;
}

.related-section h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-text-1);
  position: relative;
  padding-left: 14px;
}

.related-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: var(--color-primary);
  border-radius: 4px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: all 0.25s ease;
  cursor: pointer;
}

.related-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(15, 99, 204, 0.3);
  transform: translateY(-2px);
}

.related-card:hover h3 {
  color: var(--color-primary);
}

.related-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--color-primary-light);
}

.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.4s ease;
}

.related-card:hover .related-img img {
  transform: scale(1.04);
}

.related-body {
  padding: 18px 20px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-tag);
  font-size: 12px;
  font-weight: 600;
  align-self: flex-start;
}

.related-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--color-text-1);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}

.related-body p {
  font-size: 13px;
  color: var(--color-text-3);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
}

.related-empty {
  text-align: center;
  padding: 48px 24px;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-card);
  color: var(--color-text-3);
}

.related-empty a {
  color: var(--color-primary);
  font-weight: 600;
}

/* ========== 返回入口 ========== */
.back-link {
  max-width: 780px;
  margin: 0 auto 32px;
  padding: 20px 0;
  border-top: 1px solid var(--color-border);
}

.back-link a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  transition: gap 0.2s ease;
}

.back-link a:hover {
  gap: 12px;
  color: var(--color-primary-dark);
}

/* ========== 页脚 ========== */
.site-footer {
  margin-top: auto;
  background: var(--color-footer);
  color: #B8C2D0;
  padding: 64px 0 0;
  position: relative;
}

.site-footer .row {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 48px;
  margin-bottom: 40px;
}

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

.footer-brand .footer-logo span:last-child {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.3px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #8A94A6;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: #B8C2D0;
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-col ul li a:hover {
  color: #fff;
}

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #8A94A6;
}

.footer-contact li i {
  width: 16px;
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #6B7A90;
}

.footer-bottom p {
  margin: 0;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  :root {
    --space-section: 56px;
  }

  .container {
    padding: 24px 20px 0;
  }

  .article-header h1 {
    font-size: 28px;
  }

  .article-body {
    padding: 28px 24px;
  }

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

@media (max-width: 640px) {
  .mobile-header {
    display: flex;
  }

  .side-shell {
    transform: translateX(-100%);
    width: 82%;
    max-width: 320px;
  }

  body.drawer-open .side-shell {
    transform: translateX(0);
  }

  .main-area {
    margin-left: 0;
  }

  .container {
    padding: 80px 16px 0;
  }

  .breadcrumb {
    margin-bottom: 24px;
    font-size: 12px;
  }

  .breadcrumb .current {
    max-width: 160px;
  }

  .article-header h1 {
    font-size: 24px;
  }

  .article-meta {
    gap: 8px 16px;
    font-size: 13px;
  }

  .article-body {
    padding: 22px 18px;
    font-size: 15px;
    line-height: 1.8;
  }

  .article-body h2 {
    font-size: 20px;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .article-tags {
    margin-bottom: 32px;
  }

  .site-footer {
    padding-top: 40px;
  }

  .site-footer .row {
    padding: 0 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .brand-text {
    font-size: 16px;
  }

  .footer-brand .footer-logo span:last-child {
    font-size: 17px;
  }
}

@media (max-width: 360px) {
  .article-header h1 {
    font-size: 21px;
  }

  .btn {
    width: 100%;
  }
}

/* Foundation 栅格覆盖 */
.row {
  max-width: none;
}

.columns {
  padding-left: 0;
  padding-right: 0;
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #C7CFDC;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-3);
}

/* roulang page: category1 */
:root {
  --color-primary: #0F63CC;
  --color-primary-dark: #0B4FA5;
  --color-primary-light: #EBF3FC;
  --color-accent: #E8B93B;
  --color-success: #2C9A68;
  --color-text-1: #172033;
  --color-text-2: #526078;
  --color-text-3: #8A94A6;
  --color-border: #E1E7EF;
  --color-bg: #F5F8FC;
  --color-surface: #FFFFFF;
  --color-dark: #16233B;
  --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-mono: "SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-tag: 999px;
  --shadow-card: 0 4px 16px rgba(20,32,56,.05);
  --shadow-hover: 0 12px 32px rgba(20,32,56,.10);
  --shadow-btn: 0 4px 12px rgba(15,99,204,.25);
  --sidebar-w: 260px;
  --space-section: 96px;
  --space-section-mobile: 48px;
  --container-max: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--color-text-1);
  background: var(--color-bg);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--color-primary-dark); }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

.row { max-width: var(--container-max); width: 100%; margin: 0 auto; }
.columns { padding-right: 1.25rem; padding-left: 1.25rem; }

.app-shell { display: flex; min-height: 100vh; }
.main-wrap { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; min-width: 0; }
.main-content { flex: 1; width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

.mobile-topbar {
  display: none; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 1001;
  background: var(--color-surface); border-bottom: 1px solid var(--color-border);
  padding: 0 20px; height: 60px;
}
.mobile-brand { font-size: 17px; font-weight: 800; color: var(--color-text-1); letter-spacing: .5px; }
.mobile-menu-btn { font-size: 20px; color: var(--color-text-2); padding: 8px; border-radius: var(--radius-btn); }
.mobile-menu-btn:hover { background: var(--color-primary-light); color: var(--color-primary); }
.drawer-overlay {
  display: none; position: fixed; inset: 0; background: rgba(22,35,59,.45);
  opacity: 0; pointer-events: none; transition: opacity .3s ease; z-index: 1100;
}
.drawer-overlay.active { opacity: 1; pointer-events: auto; }

.sidebar {
  position: fixed; top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  z-index: 1200;
  transition: transform .3s ease;
}
.sidebar-inner { display: flex; flex-direction: column; height: 100%; padding: 20px 14px; }
.brand-logo {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 12px; margin-bottom: 24px;
  border-bottom: 1px dashed var(--color-border);
}
.brand-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--color-primary); color: #fff;
  font-weight: 800; font-size: 17px;
  box-shadow: var(--shadow-btn); flex-shrink: 0;
}
.brand-text { font-size: 17px; font-weight: 700; letter-spacing: .5px; color: var(--color-text-1); line-height: 1.3; }

.side-nav { display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 14px; border-radius: var(--radius-btn);
  color: var(--color-text-2); font-size: 15px; font-weight: 500;
  border-left: 3px solid transparent;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.nav-item:hover { background: var(--color-primary-light); color: var(--color-primary); }
.nav-item.active { background: var(--color-primary-light); color: var(--color-primary); border-left-color: var(--color-primary); font-weight: 600; }
.nav-item.disabled { opacity: .45; pointer-events: none; }
.nav-icon { width: 18px; text-align: center; font-size: 15px; }
.sidebar-foot { margin-top: auto; padding: 14px 12px; border-top: 1px solid var(--color-border); font-size: 12px; color: var(--color-text-3); line-height: 1.6; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 28px; font-size: 15px; font-weight: 600;
  border-radius: var(--radius-btn); line-height: 1.4;
  transition: all .25s ease; text-align: center; border: 1px solid transparent;
}
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: var(--shadow-btn); }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 8px 20px rgba(15,99,204,.35); }
.btn-outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary-light); color: var(--color-primary); }
.btn-light { background: #fff; color: var(--color-primary); box-shadow: 0 4px 14px rgba(15,99,204,.15); }
.btn-light:hover { background: var(--color-primary-light); color: var(--color-primary-dark); }
.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

.section { padding: var(--space-section) 0; }
.section-head { text-align: center; max-width: 620px; margin: 0 auto 48px; }
.section-head .section-tag { margin-bottom: 10px; }
.section-head h2 { font-size: 30px; font-weight: 700; letter-spacing: -.2px; margin-bottom: 12px; line-height: 1.4; }
.section-head p { color: var(--color-text-2); font-size: 16px; }
.section-tag {
  display: inline-block; background: var(--color-primary-light);
  color: var(--color-primary); font-size: 13px; font-weight: 600;
  padding: 4px 14px; border-radius: var(--radius-tag); letter-spacing: .3px;
}

.cat-hero {
  position: relative;
  background:
    linear-gradient(135deg, rgba(235,243,252,.94) 0%, rgba(245,248,252,.88) 45%, rgba(15,99,204,.12) 100%),
    url('/assets/images/backpic/back-2.webp') center 30% / cover no-repeat;
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}
.cat-hero::before {
  content: "";
  position: absolute; top: -60px; right: -60px; width: 240px; height: 240px;
  background: radial-gradient(rgba(15,99,204,.10) 1.5px, transparent 1.5px);
  background-size: 18px 18px; border-radius: 50%;
  pointer-events: none;
}
.hero-inner { max-width: 760px; padding: 0 8px; }
.hero-inner .section-tag { margin-bottom: 18px; }
.hero-inner h1 { font-size: 42px; font-weight: 800; letter-spacing: -.5px; line-height: 1.25; margin-bottom: 20px; color: var(--color-text-1); }
.hero-inner p { font-size: 17px; color: var(--color-text-2); max-width: 560px; margin-bottom: 32px; line-height: 1.8; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.overview-section { background: var(--color-surface); }
.overview-item {
  display: flex; align-items: center; gap: 48px;
  padding: 48px 0; margin-bottom: 16px;
}
.overview-item:last-child { margin-bottom: 0; }
.overview-item:nth-child(even) { flex-direction: row-reverse; }
.overview-image { flex: 1 1 46%; position: relative; }
.overview-image::after {
  content: "";
  position: absolute; inset: 12px -12px -12px 12px;
  border: 1px solid var(--color-primary-light); border-radius: var(--radius-card);
  z-index: 0; pointer-events: none;
}
.overview-image img { border-radius: var(--radius-card); box-shadow: var(--shadow-hover); position: relative; z-index: 1; }
.overview-text { flex: 1 1 46%; padding: 8px 0; }
.overview-text .section-tag { margin-bottom: 14px; }
.overview-text h2 { font-size: 28px; font-weight: 700; letter-spacing: -.2px; margin-bottom: 14px; line-height: 1.4; }
.overview-text p { color: var(--color-text-2); font-size: 16px; line-height: 1.8; }

.types-section { background: var(--color-bg); position: relative; }
.types-section .row { position: relative; z-index: 1; }
.type-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-card); overflow: hidden;
  box-shadow: var(--shadow-card); position: relative;
  transition: box-shadow .25s ease, transform .25s ease;
  margin-bottom: 24px;
}
.type-card::after {
  content: ""; position: absolute; inset: 5px;
  border: 1px solid rgba(15,99,204,.07); border-radius: calc(var(--radius-card) - 5px);
  pointer-events: none; z-index: 1;
}
.type-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.type-card img { width: 100%; height: 200px; object-fit: cover; }
.type-card-lg img { height: 260px; }
.type-card-content { padding: 22px 24px 26px; position: relative; z-index: 2; }
.type-card-content h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.type-card-content p { color: var(--color-text-2); font-size: 14px; line-height: 1.7; margin-bottom: 14px; }
.type-badge {
  display: inline-block; font-size: 12px; font-weight: 600;
  background: var(--color-accent); color: #4a3410;
  padding: 3px 12px; border-radius: var(--radius-tag);
}

.process-section { background: var(--color-surface); }
.process-timeline { position: relative; padding-left: 32px; }
.process-timeline::before {
  content: ""; position: absolute; left: 12px; top: 8px; bottom: 8px;
  width: 2px; background: var(--color-primary-light);
  border-left: 2px dashed var(--color-primary);
  opacity: .5;
}
.timeline-item { position: relative; margin-bottom: 36px; padding-left: 28px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-item::before {
  content: ""; position: absolute; left: -32px; top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--color-primary); box-shadow: 0 0 0 4px rgba(15,99,204,.15);
}
.timeline-num {
  display: inline-block; font-family: var(--font-mono);
  font-size: 13px; font-weight: 700; color: var(--color-primary);
  background: var(--color-primary-light); border-radius: 6px;
  padding: 2px 10px; margin-bottom: 8px; letter-spacing: 1px;
}
.timeline-content h3 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.timeline-content p { color: var(--color-text-2); font-size: 15px; line-height: 1.7; max-width: 520px; }

.faq-section { background: var(--color-bg); }
.faq-section .accordion { background: transparent; border: none; }
.faq-section .accordion-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  margin-bottom: 16px; overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow .25s ease;
}
.faq-section .accordion-item.is-active { box-shadow: var(--shadow-hover); }
.faq-section .accordion-title {
  background: var(--color-surface); color: var(--color-text-1);
  font-size: 16px; font-weight: 600; padding: 18px 22px;
  display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid transparent;
  transition: background .25s ease;
}
.faq-section .accordion-item.is-active .accordion-title { background: var(--color-primary-light); border-bottom-color: var(--color-border); }
.faq-section .accordion-title::before {
  content: "+"; font-size: 20px; font-weight: 400; color: var(--color-primary);
  transition: transform .25s ease; flex-shrink: 0;
}
.faq-section .accordion-item.is-active .accordion-title::before { transform: rotate(45deg); }
.faq-section .accordion-content { padding: 0 22px 20px; background: var(--color-surface); font-size: 15px; color: var(--color-text-2); line-height: 1.75; }
.faq-section .accordion-item.is-active .accordion-content { background: var(--color-primary-light); }
.faq-section .accordion-content p { margin-bottom: 0; }

.cta-bar {
  background: var(--color-primary);
  padding: 40px 0;
  border-radius: 0;
  margin: 0 0 0;
}
.cta-bar .row { display: flex; align-items: center; justify-content: space-between; }
.cta-bar h3 { color: #fff; font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.cta-bar p { color: rgba(255,255,255,.85); font-size: 15px; }

.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,.72);
  padding: 64px 0 24px;
  margin-top: 0;
}
.site-footer .row { max-width: var(--container-max); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.4fr; gap: 48px; margin-bottom: 40px; }
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-logo .brand-icon { width: 32px; height: 32px; font-size: 15px; }
.footer-logo span { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: .5px; }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; color: rgba(255,255,255,.6); }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,.62); font-size: 14px; transition: color .2s ease; }
.footer-col ul li a:hover { color: var(--color-primary-light); }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: rgba(255,255,255,.62); }
.footer-contact i { color: var(--color-primary-light); margin-top: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,.4); }

@media (max-width: 1024px) {
  :root { --sidebar-w: 0px; }
  .sidebar { transform: translateX(-100%); box-shadow: 4px 0 20px rgba(0,0,0,.08); }
  .sidebar.open { transform: translateX(0); }
  .main-wrap { margin-left: 0; }
  .mobile-topbar { display: flex; }
  .drawer-overlay { display: block; }
  .main-content { padding: 0 24px; }
  .overview-item, .overview-item:nth-child(even) { flex-direction: column; gap: 28px; }
  .overview-image, .overview-text { flex: 1 1 100%; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .cat-hero { padding: 64px 0 48px; }
  .hero-inner h1 { font-size: 32px; }
  .hero-inner p { font-size: 15px; }
  .section { padding: var(--space-section-mobile) 0; }
  .section-head h2 { font-size: 24px; }
  .overview-image::after { display: none; }
  .type-card img { height: 170px; }
  .type-card-lg img { height: 200px; }
  .cta-bar .row { flex-direction: column; text-align: center; gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .main-content { padding: 0 16px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .timeline-item { padding-left: 18px; }
  .section-head { margin-bottom: 32px; }
}