/* roulang page: index */
:root {
  --primary: #2B6CE6;
  --primary-hover: #1E56C4;
  --primary-active: #17409E;
  --primary-light: #E8F0FE;
  --amber: #F59E0B;
  --amber-hover: #D97706;
  --green: #10B981;
  --bg: #F5F9FC;
  --card: #FFFFFF;
  --heading: #0F172A;
  --body: #334155;
  --muted: #64748B;
  --line: #E2E8F0;
  --radius-lg: 1rem;
  --radius-md: 0.75rem;
  --shadow-sm: 0 1px 3px rgba(15,23,42,0.06), 0 4px 12px rgba(15,23,42,0.04);
  --shadow-hover: 0 8px 24px rgba(15,23,42,0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.15s ease;
}

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

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

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(43, 108, 230, 0.3);
  outline-offset: 2px;
}

.section-padding {
  padding: 64px 0;
}

@media (max-width: 767px) {
  .section-padding {
    padding: 40px 0;
  }
}

.eyebrow {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
}

.section-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--heading);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-sub {
  font-size: 16px;
  color: var(--muted);
  max-width: 640px;
  line-height: 1.7;
}

.btn-main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.btn-main:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

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

.btn-main:disabled {
  opacity: 0.5;
  box-shadow: none;
  transform: none;
  cursor: not-allowed;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.15s ease;
}

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

.btn-outline:active {
  background: #DCE7FC;
}

.btn-amber {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--amber);
  color: #fff;
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.btn-amber:hover {
  background: var(--amber-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}

.btn-amber:active {
  background: #B45309;
  transform: translateY(0);
}

/* header nav */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  z-index: 100;
}

.site-nav-inner {
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}

.nav-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--heading);
  white-space: nowrap;
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  flex: 1;
  justify-content: center;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  background: transparent;
  white-space: nowrap;
  transition: all 0.15s ease;
}

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

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

.nav-cta {
  flex-shrink: 0;
}

.nav-cta .btn-main {
  padding: 9px 20px;
  font-size: 14px;
}

@media (max-width: 1024px) {
  .nav-logo-text {
    display: none;
  }
  .nav-tabs {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .site-nav {
    height: 56px;
  }
  .site-nav-inner {
    padding: 0 16px;
    gap: 10px;
  }
  .nav-logo-icon {
    width: 32px;
    height: 32px;
    font-size: 15px;
  }
  .nav-tab {
    padding: 6px 14px;
    font-size: 13px;
  }
  .nav-cta .btn-main {
    padding: 7px 14px;
    font-size: 13px;
  }
}

/* hero */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  margin-top: 64px;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 80px 0 100px;
  overflow: hidden;
}

.hero-shadow {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #FFFFFF 0%, rgba(255,255,255,0.85) 35%, rgba(255,255,255,0.35) 70%, rgba(255,255,255,0.05) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(43,108,230,0.15);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 44px;
  font-weight: 700;
  line-height: 1.22;
  color: var(--heading);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.hero h1 .brand-highlight {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(43,108,230,0.4);
  text-decoration-thickness: 4px;
  text-underline-offset: 6px;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 480px;
}

.hero-info {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-info-item {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.8);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--body);
  box-shadow: 0 1px 2px rgba(15,23,42,0.04);
}

.hero-info-item svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  flex-shrink: 0;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 767px) {
  .hero {
    margin-top: 56px;
    min-height: auto;
    padding: 48px 0 64px;
  }
  .hero h1 {
    font-size: 32px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .hero-info {
    gap: 8px;
  }
  .hero-info-item {
    font-size: 13px;
    padding: 6px 10px;
  }
  .hero-ctas .btn-main,
  .hero-ctas .btn-outline {
    width: 100%;
  }
}

/* agenda timeline */
.agenda-section {
  padding: 64px 0;
  position: relative;
  margin-top: -40px;
  z-index: 5;
}

.timeline-wrap {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding: 32px 0;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 48px 48px 0;
}

.timeline-item.alt {
  margin-left: 50%;
  padding: 0 0 48px 48px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  right: -7px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px rgba(43, 108, 230, 0.25);
  z-index: 2;
}

.timeline-item.alt::before {
  left: -7px;
  right: auto;
}

.timeline-time {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.timeline-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  padding: 24px;
  transition: all 0.2s ease;
  border: 1px solid rgba(226, 232, 240, 0.5);
}

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

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

.timeline-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.timeline-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 999px;
}

@media (max-width: 767px) {
  .agenda-section {
    padding: 40px 0 48px;
    margin-top: -20px;
  }
  .timeline-line {
    left: 8px;
    transform: none;
  }
  .timeline-item,
  .timeline-item.alt {
    width: 100%;
    padding: 0 0 32px 32px;
    margin-left: 0;
  }
  .timeline-item::before,
  .timeline-item.alt::before {
    left: 1px;
    right: auto;
  }
  .timeline-card {
    padding: 18px;
  }
}

/* guests & highlights */
.guest-section {
  padding: 64px 0;
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.guest-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.guest-card {
  background: repeat;
  text-align: center;
  padding: 28px 16px;
  border-radius: 16px;
  border: 1px solid rgba(226, 232, 240, 0.6);
  background: #fff;
  box-shadow: 0 1px 2px rgba(15,23,42,0.02);
  transition: all 0.2s ease;
}

.guest-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: rgba(43,108,230,0.2);
}

.guest-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  margin: 0 auto 16px;
}

.guest-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 4px;
}

.guest-card p {
  font-size: 14px;
  color: var(--muted);
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.highlight-card {
  background: #F1F5F9;
  border-radius: 16px;
  padding: 28px 20px;
  transition: background 0.2s ease;
}

.highlight-card:hover {
  background: var(--primary-light);
}

.highlight-icon {
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.highlight-icon svg {
  width: 22px;
  height: 22px;
}

.highlight-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 8px;
}

.highlight-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

@media (max-width: 767px) {
  .guest-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .highlights-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .highlight-card {
    padding: 20px 14px;
  }
}

@media (max-width: 480px) {
  .guest-grid {
    grid-template-columns: 1fr;
  }
  .highlights-grid {
    grid-template-columns: 1fr;
  }
}

/* ticket section */
.ticket-section {
  padding: 64px 0;
}

.ticket-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
  align-items: stretch;
}

.ticket-card {
  background: #fff;
  border-radius: 16px;
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226, 232, 240, 0.6);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.2s ease;
}

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

.ticket-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 8px 32px rgba(43, 108, 230, 0.12);
  transform: scale(1.02);
}

.ticket-card.featured:hover {
  transform: scale(1.02) translateY(-2px);
  box-shadow: 0 12px 40px rgba(43, 108, 230, 0.18);
}

.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 999px;
  white-space: nowrap;
}

.ticket-type {
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 8px;
}

.ticket-price {
  font-size: 40px;
  font-weight: 700;
  color: var(--heading);
  line-height: 1.2;
  margin-bottom: 24px;
}

.ticket-price span {
  font-size: 16px;
  font-weight: 400;
  color: var(--muted);
}

.ticket-benefits {
  list-style: none;
  flex: 1;
  margin-bottom: 28px;
}

.ticket-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--body);
  padding: 7px 0;
  line-height: 1.5;
}

.ticket-benefits li svg {
  width: 18px;
  height: 18px;
  color: var(--green);
  flex-shrink: 0;
  margin-top: 2px;
}

.ticket-card .btn-main,
.ticket-card .btn-amber,
.ticket-card .btn-outline {
  width: 100%;
}

@media (max-width: 1024px) {
  .ticket-grid {
    gap: 16px;
  }
  .ticket-card {
    padding: 24px 18px;
  }
}

@media (max-width: 767px) {
  .ticket-grid {
    grid-template-columns: 1fr;
  }
  .ticket-card.featured {
    order: -1;
    transform: none;
  }
  .ticket-card.featured:hover {
    transform: none;
  }
}

/* registration form */
.registration-section {
  padding: 64px 0;
  background: linear-gradient(180deg, #F5F9FC 0%, #E8F0FE 100%);
}

.form-card {
  max-width: 560px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  box-shadow: var(--shadow-hover);
}

.form-card h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 8px;
}

.form-card .form-desc {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 28px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  height: 44px;
  background: #fff;
  border: 1.5px solid #CBD5E1;
  border-radius: 0.5rem;
  padding: 0 14px;
  font-size: 15px;
  color: var(--heading);
  transition: all 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43, 108, 230, 0.15);
}

textarea.form-control {
  height: auto;
  min-height: 90px;
  padding: 12px 14px;
  resize: vertical;
}

.form-control.error {
  border-color: #EF4444;
}

.form-control.success {
  border-color: var(--green);
}

.form-error-msg {
  font-size: 13px;
  color: #EF4444;
  margin-top: 6px;
  display: none;
}

.form-group.has-error .form-error-msg {
  display: block;
}

.form-success {
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 14px;
  color: #065F46;
  display: none;
  margin-bottom: 16px;
}

.form-success.show {
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-success svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .form-card {
    padding: 28px 20px;
    margin: 0 16px;
  }
  .form-card h2 {
    font-size: 22px;
  }
}

/* news / CMS section */
.news-section {
  padding: 64px 0;
}

.news-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.news-headline-card {
  display: flex;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226,232,240,0.5);
  transition: box-shadow 0.2s ease;
  margin-bottom: 24px;
}

.news-headline-card:hover {
  box-shadow: var(--shadow-hover);
}

.news-headline-img {
  flex: 0 0 40%;
  position: relative;
  min-height: 200px;
}

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

.news-headline-body {
  flex: 1;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-headline-body .news-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 10px;
  line-height: 1.4;
}

.news-headline-body .news-summary {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.news-meta .badge {
  background: var(--primary-light);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 999px;
  font-weight: 500;
}

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

.news-list-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #fff;
  border-radius: 12px;
  padding: 16px 20px;
  border: 1px solid rgba(226,232,240,0.5);
  transition: all 0.15s ease;
}

.news-list-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: rgba(43,108,230,0.3);
  transform: translateX(2px);
}

.news-list-item .news-item-title {
  flex: 1;
  font-size: 15px;
  font-weight: 500;
  color: var(--heading);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-list-item .news-item-cat {
  font-size: 13px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: 999px;
  flex-shrink: 0;
}

.news-list-item .news-item-date {
  font-size: 13px;
  color: var(--muted);
  flex-shrink: 0;
}

.news-list-item .news-arrow {
  color: var(--muted);
  flex-shrink: 0;
  display: flex;
}

.news-empty {
  background: #fff;
  border: 1px dashed var(--line);
  border-radius: 16px;
  padding: 48px 24px;
  text-align: center;
  color: var(--muted);
}

.news-empty svg {
  width: 44px;
  height: 44px;
  margin: 0 auto 16px;
  color: #CBD5E1;
}

@media (max-width: 767px) {
  .news-headline-card {
    flex-direction: column;
  }
  .news-headline-img {
    flex: none;
    width: 100%;
    height: 160px;
    position: relative;
  }
  .news-headline-body {
    padding: 20px;
  }
  .news-headline-body .news-title {
    font-size: 18px;
  }
  .news-list-item {
    padding: 12px 14px;
    gap: 10px;
    flex-wrap: wrap;
  }
  .news-list-item .news-item-title {
    white-space: normal;
    flex: 1 1 100%;
    order: 1;
    font-size: 14px;
  }
  .news-list-item .news-item-cat {
    order: 2;
  }
  .news-list-item .news-item-date {
    order: 3;
  }
  .news-list-item .news-arrow {
    order: 4;
  }
}

/* faq */
.faq-section {
  padding: 64px 0;
  background: #fff;
  border-top: 1px solid var(--line);
}

.faq-list {
  max-width: 800px;
  margin: 40px auto 0;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.faq-item.open {
  box-shadow: var(--shadow-sm);
  border-color: rgba(43,108,230,0.3);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  text-align: left;
  transition: background 0.15s ease;
}

.faq-question:hover {
  background: #F8FAFC;
}

.faq-icon {
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--muted);
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

@media (max-width: 640px) {
  .faq-question {
    padding: 16px;
    font-size: 15px;
  }
  .faq-answer-inner {
    padding: 0 16px 16px;
    font-size: 14px;
  }
}

/* footer */
.site-footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 48px 0 20px;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(148,163,184,0.15);
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand .footer-desc {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 300px;
}

.footer-col h3 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

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

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

.footer-col ul li a {
  font-size: 14px;
  color: #94A3B8;
  transition: color 0.15s ease;
}

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

.footer-contact p {
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  flex-shrink: 0;
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: #64748B;
}

.footer-bottom a {
  color: #94A3B8;
  transition: color 0.15s ease;
}

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

.footer-cta {
  margin-top: 20px;
}

@media (max-width: 767px) {
  .footer-main {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 28px;
  }
  .site-footer {
    padding: 40px 0 20px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* scroll to top */
.fab {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-hover);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, background 0.2s ease;
  z-index: 99;
}

.fab.visible {
  opacity: 1;
  pointer-events: auto;
}

.fab:hover {
  background: var(--primary-hover);
}

.fab svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 640px) {
  .fab {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
}

/* roulang page: article */
:root {
            --primary: #2B6CE6;
            --primary-hover: #1E56C4;
            --primary-active: #17409E;
            --primary-light: #E8F0FE;
            --amber: #F59E0B;
            --amber-hover: #D97706;
            --green: #10B981;
            --green-hover: #059669;
            --bg: #F5F9FC;
            --card-bg: #FFFFFF;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border: #E2E8F0;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 1px 3px rgba(15,23,42,0.06), 0 4px 12px rgba(15,23,42,0.04);
            --shadow-hover: 0 8px 24px rgba(15,23,42,0.08);
            --font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.6;
            font-size: 16px;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

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

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

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

        /* ===== 按钮 ===== */
        .btn-main,
        .btn-amber,
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            transition: all .15s ease;
            white-space: nowrap;
        }

        .btn-main {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 1px 3px rgba(37, 99, 235, 0.2);
        }
        .btn-main:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .btn-main:active {
            background: var(--primary-active);
            transform: translateY(0);
        }
        .btn-main:focus-visible {
            outline: 3px solid rgba(43, 108, 230, 0.3);
            outline-offset: 2px;
        }

        .btn-amber {
            background: var(--amber);
            color: #fff;
            box-shadow: 0 1px 3px rgba(245, 158, 11, 0.2);
        }
        .btn-amber:hover {
            background: var(--amber-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .btn-amber:active {
            background: #B45309;
            transform: translateY(0);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary-light);
        }
        .btn-outline:active {
            background: #dbe7fb;
        }

        /* ===== 顶部导航 ===== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: 64px;
        }

        .site-nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            height: 64px;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            display: flex;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 1px;
        }

        .nav-logo-text {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .nav-logo:hover .nav-logo-icon {
            background: var(--primary-hover);
        }

        .nav-tabs {
            display: flex;
            align-items: center;
            background: #F1F5F9;
            padding: 4px;
            border-radius: 999px;
            gap: 2px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-tabs::-webkit-scrollbar {
            display: none;
        }

        .nav-tab {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            transition: all .15s;
            white-space: nowrap;
            text-align: center;
        }

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

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

        .nav-cta {
            display: flex;
            flex-shrink: 0;
        }

        .nav-cta .btn-main {
            padding: 9px 22px;
            font-size: 14px;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 92px 0 16px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .breadcrumb a {
            color: var(--primary);
            transition: color .15s;
        }

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

        .breadcrumb .sep {
            color: #94A3B8;
        }

        /* ===== 文章主体 ===== */
        .article-page {
            padding: 40px 0 64px;
        }

        .article-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            max-width: 860px;
            margin: 0 auto;
            padding: 40px 48px;
        }

        .article-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .article-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            font-size: 14px;
            color: var(--text-muted);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
        }

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

        .article-meta svg {
            width: 16px;
            height: 16px;
        }

        .article-content {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.8;
        }

        .article-content p {
            margin-bottom: 1.5em;
            color: var(--text-body);
        }

        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 2em 0 0.8em;
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-heading);
            margin: 1.8em 0 0.6em;
            line-height: 1.4;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.5em 1.4em;
        }

        .article-content li {
            margin-bottom: 0.4em;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: #F8FAFC;
            padding: 16px 20px;
            border-radius: 8px;
            margin: 1.5em 0;
            color: #475569;
        }

        .article-content img {
            width: 100%;
            max-width: 100%;
            border-radius: 12px;
            margin: 1.5em 0;
        }

        .article-content code {
            background: #F1F5F9;
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
            color: #d6336c;
        }

        .article-content pre {
            background: #F8FAFC;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 16px;
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 14px;
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color .15s;
        }

        .article-content a:hover {
            color: var(--primary-hover);
            text-decoration: underline;
        }

        .article-empty {
            text-align: center;
            padding: 60px 20px;
        }

        .article-empty .empty-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: #F1F5F9;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 32px;
        }

        .article-empty h2 {
            font-size: 24px;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .article-empty p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }

        .article-tag {
            display: inline-flex;
            align-items: center;
            background: #F1F5F9;
            color: var(--text-muted);
            font-size: 13px;
            padding: 5px 14px;
            border-radius: 999px;
            transition: all .15s;
        }

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

        /* ===== 相关推荐 ===== */
        .related-section {
            max-width: 860px;
            margin: 32px auto 0;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 36px 40px;
        }

        .related-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .related-header h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
        }

        .related-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all .2s ease;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .related-card .cover {
            height: 120px;
            overflow: hidden;
            background: #F1F5F9;
        }

        .related-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }

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

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

        .related-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.45;
            margin-bottom: 10px;
            flex-grow: 1;
        }

        .related-body .date {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .related-body .date svg {
            width: 14px;
            height: 14px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 56px 0 64px;
        }

        .cta-box {
            position: relative;
            background: linear-gradient(135deg, #fff 0%, #EFF6FF 100%);
            border-radius: 20px;
            padding: 48px 40px;
            text-align: center;
            border: 1px solid #DBEAFE;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(43, 108, 230, 0.06);
        }

        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .cta-box p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-box .btn-group {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 64px 0 0;
        }

        .footer-main {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }

        .footer-logo .nav-logo-icon {
            background: var(--primary);
        }

        .footer-logo span:last-child {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }

        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

        .footer-col ul a {
            font-size: 14px;
            color: #94A3B8;
            transition: color .15s;
        }

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

        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            margin-bottom: 12px;
            color: #94A3B8;
        }

        .footer-contact svg {
            width: 16px;
            height: 16px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: space-between;
            font-size: 13px;
            color: #64748B;
        }

        .footer-bottom a {
            color: #94A3B8;
            transition: color .15s;
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .related-list {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-nav,
            .site-nav-inner {
                height: 56px;
            }

            .site-nav-inner {
                padding: 0 16px;
                gap: 8px;
            }

            .nav-logo-text {
                font-size: 14px;
                max-width: 95px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

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

            .nav-tabs {
                margin: 0 4px;
                flex: 0 1 auto;
            }

            .nav-tab {
                padding: 7px 14px;
                font-size: 13px;
            }

            .nav-cta .btn-main {
                padding: 7px 14px;
                font-size: 13px;
            }

            .breadcrumb-wrap {
                padding: 80px 0 12px;
            }

            .article-card {
                padding: 28px 20px;
            }

            .article-title {
                font-size: 26px;
            }

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

            .cta-box {
                padding: 36px 20px;
            }

            .cta-box h2 {
                font-size: 24px;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .site-nav-inner {
                padding: 0 12px;
                gap: 4px;
            }

            .nav-logo-text {
                display: none;
            }

            .nav-cta .btn-main {
                padding: 7px 12px;
                font-size: 12px;
            }

            .breadcrumb-wrap {
                padding: 72px 0 10px;
            }

            .breadcrumb {
                font-size: 12px;
            }

            .article-page {
                padding: 24px 0 48px;
            }

            .article-title {
                font-size: 22px;
            }

            .article-content {
                font-size: 15px;
            }

            .related-list {
                grid-template-columns: 1fr;
            }

            .related-section {
                padding: 28px 20px;
            }

            .cta-box {
                padding: 32px 16px;
                border-radius: 16px;
            }

            .cta-box .btn-group {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-box .btn-main,
            .cta-box .btn-amber {
                width: 100%;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

/* roulang page: category2 */
:root {
        --primary: #2B6CE6;
        --primary-hover: #1E56C4;
        --primary-active: #17409E;
        --primary-light: #E8F0FE;
        --amber: #F59E0B;
        --amber-hover: #D97706;
        --green: #10B981;
        --green-hover: #059669;
        --bg: #F5F9FC;
        --card: #FFFFFF;
        --text-main: #0F172A;
        --text-body: #334155;
        --text-muted: #64748B;
        --border: #E2E8F0;
        --input-border: #CBD5E1;
        --radius-lg: 1rem;
        --radius-md: 0.75rem;
        --radius-sm: 0.5rem;
        --shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
        --shadow-hover: 0 8px 24px rgba(15, 23, 42, 0.08);
        --font-family: 'PingFang SC', 'Microsoft YaHei', 'Source Han 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-body);
        line-height: 1.6;
        font-size: 16px;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        color: inherit;
        text-decoration: none;
    }
    button,
    input,
    select,
    textarea {
        font-family: inherit;
        font-size: inherit;
        line-height: inherit;
    }
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }
    .site-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        background: #fff;
        border-bottom: 1px solid var(--border);
        height: 64px;
        display: flex;
        align-items: center;
        box-shadow: 0 1px 4px rgba(15, 23, 42, 0.03);
    }
    .site-nav-inner {
        max-width: 1280px;
        margin: 0 auto;
        padding: 0 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        width: 100%;
    }
    .nav-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .nav-logo-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--primary);
        color: #fff;
        border-radius: 10px;
        font-size: 18px;
        font-weight: 700;
        flex-shrink: 0;
    }
    .nav-logo-text {
        font-size: 18px;
        font-weight: 700;
        color: var(--text-main);
        white-space: nowrap;
    }
    .nav-tabs {
        display: flex;
        gap: 6px;
        overflow-x: auto;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    .nav-tabs::-webkit-scrollbar {
        display: none;
    }
    .nav-tab {
        display: inline-flex;
        align-items: center;
        padding: 8px 16px;
        border-radius: 999px;
        font-size: 14px;
        color: var(--text-body);
        background: transparent;
        transition: all .15s ease;
        white-space: nowrap;
    }
    .nav-tab:hover {
        background: var(--primary-light);
        color: var(--primary);
    }
    .nav-tab.active {
        background: var(--primary);
        color: #fff;
        font-weight: 600;
    }
    .nav-cta {
        flex-shrink: 0;
    }
    .btn-main,
    .btn-amber {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: none;
        border-radius: var(--radius-sm);
        padding: 12px 24px;
        font-weight: 600;
        font-size: 15px;
        cursor: pointer;
        transition: all .15s ease;
        line-height: 1.2;
    }
    .btn-main {
        background: var(--primary);
        color: #fff;
        box-shadow: var(--shadow);
    }
    .btn-main:hover {
        background: var(--primary-hover);
        transform: translateY(-1px);
        box-shadow: var(--shadow-hover);
    }
    .btn-main:active {
        background: var(--primary-active);
        transform: translateY(0);
    }
    .btn-amber {
        background: var(--amber);
        color: #fff;
        box-shadow: var(--shadow);
    }
    .btn-amber:hover {
        background: var(--amber-hover);
        transform: translateY(-1px);
        box-shadow: var(--shadow-hover);
    }
    .btn-amber:active {
        background: #B45309;
        transform: translateY(0);
    }
    .btn-outline {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: 2px solid var(--primary);
        color: var(--primary);
        border-radius: var(--radius-sm);
        padding: 10px 22px;
        font-weight: 600;
        font-size: 15px;
        background: transparent;
        cursor: pointer;
        transition: all .15s ease;
    }
    .btn-outline:hover {
        background: var(--primary-light);
    }
    .btn-outline:active {
        background: #D0E0FC;
    }
    .page-banner {
        padding: 72px 0 56px;
        background: linear-gradient(to right, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        border-bottom: 1px solid var(--border);
    }
    .page-banner-inner {
        max-width: 860px;
    }
    .page-banner h1 {
        font-size: 40px;
        font-weight: 700;
        color: var(--text-main);
        line-height: 1.25;
        margin-bottom: 16px;
    }
    .page-banner p {
        font-size: 16px;
        color: var(--text-body);
        line-height: 1.8;
    }
    .banner-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--primary-light);
        color: var(--primary);
        padding: 6px 16px;
        border-radius: 999px;
        font-size: 13px;
        margin-bottom: 18px;
    }
    .section-block {
        padding: 64px 0;
    }
    .section-title {
        font-size: 30px;
        font-weight: 700;
        color: var(--text-main);
        text-align: center;
        margin-bottom: 12px;
    }
    .section-subtitle {
        font-size: 16px;
        color: var(--text-muted);
        text-align: center;
        max-width: 720px;
        margin: 0 auto 44px;
        line-height: 1.7;
    }
    .timeline-wrap {
        position: relative;
        max-width: 960px;
        margin: 0 auto;
        padding: 20px 0;
    }
    .timeline-wrap::before {
        content: '';
        position: absolute;
        left: 50%;
        top: 0;
        bottom: 0;
        width: 3px;
        background: var(--border);
        transform: translateX(-50%);
    }
    .timeline-item {
        display: flex;
        align-items: flex-start;
        margin-bottom: 40px;
        position: relative;
    }
    .timeline-item:nth-child(even) {
        flex-direction: row-reverse;
    }
    .timeline-dot {
        position: absolute;
        left: 50%;
        top: 24px;
        width: 14px;
        height: 14px;
        background: var(--primary);
        border-radius: 50%;
        transform: translateX(-50%);
        z-index: 2;
        box-shadow: 0 0 0 4px rgba(43, 108, 230, .18);
    }
    .timeline-time {
        width: calc(50% - 54px);
        text-align: right;
        font-size: 14px;
        color: var(--text-muted);
        padding-top: 18px;
        font-weight: 600;
        padding-right: 24px;
    }
    .timeline-card {
        width: calc(50% - 54px);
        background: var(--card);
        border-radius: var(--radius-lg);
        padding: 24px;
        box-shadow: var(--shadow);
        border: 1px solid rgba(226, 232, 240, .6);
        transition: box-shadow .2s ease, transform .2s ease;
    }
    .timeline-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-2px);
    }
    .timeline-card h3 {
        font-size: 18px;
        color: var(--text-main);
        font-weight: 700;
        margin-bottom: 10px;
    }
    .timeline-card p {
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.6;
        margin-bottom: 12px;
    }
    .timeline-tag {
        display: inline-block;
        background: var(--primary-light);
        color: var(--primary);
        font-size: 12px;
        padding: 4px 12px;
        border-radius: 999px;
        font-weight: 500;
    }
    .compare-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .compare-card {
        background: var(--card);
        border-radius: var(--radius-lg);
        padding: 36px 32px;
        box-shadow: var(--shadow);
        border: 1px solid rgba(226, 232, 240, .6);
        position: relative;
        transition: box-shadow .2s ease, transform .2s ease;
    }
    .compare-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-3px);
    }
    .compare-card.highlight {
        border: 2px solid var(--primary);
    }
    .compare-icon {
        width: 56px;
        height: 56px;
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        margin-bottom: 20px;
    }
    .compare-icon.blue {
        background: var(--primary-light);
        color: var(--primary);
    }
    .compare-icon.green {
        background: #D1FAE5;
        color: var(--green);
    }
    .compare-card h3 {
        font-size: 22px;
        color: var(--text-main);
        font-weight: 700;
        margin-bottom: 12px;
    }
    .compare-card ul {
        list-style: none;
        margin: 18px 0 24px;
    }
    .compare-card ul li {
        padding: 7px 0;
        display: flex;
        align-items: flex-start;
        gap: 8px;
        font-size: 15px;
        color: var(--text-body);
    }
    .compare-card ul li svg {
        width: 18px;
        height: 18px;
        flex-shrink: 0;
        margin-top: 3px;
    }
    .check-blue {
        color: var(--primary);
    }
    .check-green {
        color: var(--green);
    }
    .highlights-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .highlight-card {
        background: #F1F5F9;
        border-radius: var(--radius-lg);
        padding: 32px 28px;
        text-align: center;
        transition: background .2s ease;
    }
    .highlight-card:hover {
        background: var(--primary-light);
    }
    .highlight-icon {
        width: 52px;
        height: 52px;
        border-radius: 12px;
        background: var(--primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        margin: 0 auto 18px;
    }
    .highlight-card h3 {
        font-size: 18px;
        color: var(--text-main);
        font-weight: 700;
        margin-bottom: 10px;
    }
    .highlight-card p {
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.7;
    }
    .event-cards {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .event-card {
        background: var(--card);
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow);
        border: 1px solid rgba(226, 232, 240, .6);
        transition: box-shadow .2s ease, transform .2s ease;
    }
    .event-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-4px);
    }
    .event-card .cover {
        aspect-ratio: 16 / 10;
        overflow: hidden;
    }
    .event-card .cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .3s ease;
    }
    .event-card:hover .cover img {
        transform: scale(1.03);
    }
    .event-body {
        padding: 24px;
    }
    .event-body .date-tag {
        display: inline-block;
        font-size: 12px;
        color: var(--primary);
        background: var(--primary-light);
        padding: 4px 12px;
        border-radius: 999px;
        margin-bottom: 12px;
        font-weight: 500;
    }
    .event-body h3 {
        font-size: 18px;
        color: var(--text-main);
        font-weight: 700;
        margin-bottom: 8px;
        line-height: 1.4;
    }
    .event-body p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.6;
    }
    .event-meta {
        display: flex;
        align-items: center;
        gap: 16px;
        margin-top: 16px;
        padding-top: 16px;
        border-top: 1px solid var(--border);
        font-size: 13px;
        color: var(--text-muted);
    }
    .faq-wrap {
        max-width: 800px;
        margin: 0 auto;
    }
    .faq-item {
        background: var(--card);
        border-radius: var(--radius-md);
        padding: 22px 28px;
        margin-bottom: 16px;
        box-shadow: var(--shadow);
        border: 1px solid rgba(226, 232, 240, .5);
    }
    .faq-q {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-main);
        cursor: pointer;
        background: none;
        border: none;
        padding: 0;
        text-align: left;
        width: 100%;
    }
    .faq-icon {
        flex-shrink: 0;
        transition: transform .25s ease;
        color: var(--primary);
    }
    .faq-item.open .faq-icon {
        transform: rotate(45deg);
    }
    .faq-a {
        max-height: 0;
        overflow: hidden;
        transition: max-height .25s ease;
        padding: 0;
    }
    .faq-item.open .faq-a {
        max-height: 300px;
        padding-top: 14px;
    }
    .faq-a p {
        font-size: 15px;
        color: var(--text-body);
        line-height: 1.7;
    }
    .cta-section {
        padding: 64px 0;
    }
    .cta-box {
        background: var(--primary-light);
        border-radius: var(--radius-lg);
        padding: 48px;
        text-align: center;
    }
    .cta-box h2 {
        font-size: 32px;
        color: var(--text-main);
        font-weight: 700;
        margin-bottom: 12px;
    }
    .cta-box p {
        font-size: 16px;
        color: var(--text-body);
        margin-bottom: 28px;
        max-width: 560px;
        margin-left: auto;
        margin-right: auto;
        line-height: 1.7;
    }
    .site-footer {
        background: #0F172A;
        color: #94A3B8;
        padding: 56px 0 0;
    }
    .site-footer .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 24px;
    }
    .footer-main {
        display: grid;
        grid-template-columns: 2fr 1fr 1.5fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(148, 163, 184, .15);
    }
    .footer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 16px;
        color: #fff;
        font-size: 18px;
        font-weight: 700;
    }
    .footer-desc {
        font-size: 14px;
        line-height: 1.7;
        max-width: 360px;
        margin-bottom: 20px;
        color: #94A3B8;
    }
    .site-footer h3 {
        font-size: 15px;
        color: #E2E8F0;
        font-weight: 700;
        margin-bottom: 16px;
    }
    .site-footer ul {
        list-style: none;
    }
    .site-footer ul li {
        margin-bottom: 10px;
    }
    .site-footer ul li a {
        color: #94A3B8;
        font-size: 14px;
        transition: color .15s ease;
    }
    .site-footer ul li a:hover {
        color: #fff;
    }
    .footer-contact p {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 14px;
        margin-bottom: 10px;
    }
    .footer-contact p svg {
        width: 16px;
        height: 16px;
        flex-shrink: 0;
        color: var(--primary);
    }
    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        flex-wrap: wrap;
        padding: 24px 0;
        font-size: 13px;
        color: #64748B;
    }
    .footer-bottom a {
        color: #94A3B8;
    }
    .footer-bottom a:hover {
        color: #fff;
    }
    @media (max-width: 1024px) {
        .highlights-grid {
            grid-template-columns: 1fr 1fr;
        }
        .event-cards {
            grid-template-columns: 1fr 1fr;
        }
        .footer-main {
            grid-template-columns: 1fr 1fr;
        }
    }
    @media (max-width: 768px) {
        .site-nav {
            height: 56px;
        }
        .site-nav-inner {
            padding: 0 16px;
        }
        .nav-logo-text {
            font-size: 16px;
        }
        .nav-tabs {
            position: absolute;
            left: 0;
            right: 0;
            top: 56px;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 8px 16px;
            gap: 8px;
        }
        .nav-tab {
            padding: 6px 14px;
            font-size: 13px;
        }
        .nav-cta .btn-main {
            padding: 8px 14px;
            font-size: 13px;
        }
        .page-banner {
            padding: 100px 0 40px;
        }
        .page-banner h1 {
            font-size: 30px;
        }
        .section-block {
            padding: 40px 0;
        }
        .section-title {
            font-size: 24px;
        }
        .timeline-wrap::before {
            left: 12px;
            transform: none;
        }
        .timeline-item,
        .timeline-item:nth-child(even) {
            flex-direction: column;
            padding-left: 40px;
        }
        .timeline-dot {
            left: 12px;
            transform: none;
            top: 22px;
        }
        .timeline-time {
            width: 100%;
            text-align: left;
            padding: 0 0 8px;
        }
        .timeline-card {
            width: 100%;
        }
        .compare-grid {
            grid-template-columns: 1fr;
        }
        .highlights-grid {
            grid-template-columns: 1fr;
        }
        .event-cards {
            grid-template-columns: 1fr;
        }
        .cta-box {
            padding: 32px 20px;
        }
        .footer-main {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
            padding: 20px 0;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .nav-logo-text {
            font-size: 14px;
        }
        .nav-cta .btn-main {
            display: none;
        }
    }

/* roulang page: category1 */
:root {
            --color-brand: #2B6CE6;
            --color-brand-dark: #1E56C4;
            --color-brand-active: #17409E;
            --color-brand-light: #E8F0FE;
            --color-amber: #F59E0B;
            --color-amber-dark: #D97706;
            --color-emerald: #10B981;
            --color-emerald-dark: #059669;
            --color-ink: #0F172A;
            --color-body: #334155;
            --color-muted: #64748B;
            --color-line: #E2E8F0;
            --color-canvas: #F5F9FC;
            --color-card: #FFFFFF;
            --radius-lg: 1rem;
            --radius-md: .75rem;
            --radius-sm: .5rem;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .04);
            --shadow-hover: 0 8px 24px rgba(15, 23, 42, .08);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
            --container: 1200px;
            --nav-height: 64px;
        }

        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--color-canvas);
            color: var(--color-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: var(--nav-height);
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-line);
        }
        .site-nav-inner {
            max-width: var(--container);
            height: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--color-brand);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
        }
        .nav-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-ink);
            white-space: nowrap;
        }
        .nav-tabs {
            display: flex;
            gap: 6px;
            background: #F1F5F9;
            padding: 4px;
            border-radius: 999px;
        }
        .nav-tab {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-muted);
            transition: all .15s ease;
            white-space: nowrap;
        }
        .nav-tab:hover {
            background: #fff;
            color: var(--color-brand);
        }
        .nav-tab.active {
            background: var(--color-brand);
            color: #fff;
            box-shadow: 0 2px 8px rgba(43, 108, 230, .3);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--color-line);
            background: #fff;
            align-items: center;
            justify-content: center;
            color: var(--color-ink);
            flex-shrink: 0;
        }

        .btn-main,
        .btn-amber,
        .btn-outline,
        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: .5rem;
            font-size: 15px;
            font-weight: 600;
            border: none;
            transition: all .15s ease;
        }
        .btn-main {
            background: var(--color-brand);
            color: #fff;
        }
        .btn-main:hover {
            background: var(--color-brand-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .btn-main:active {
            background: var(--color-brand-active);
        }
        .btn-amber {
            background: var(--color-amber);
            color: #fff;
        }
        .btn-amber:hover {
            background: var(--color-amber-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .btn-amber:active {
            background: #B45309;
        }
        .btn-outline {
            background: #fff;
            color: var(--color-brand);
            border: 1.5px solid var(--color-brand);
        }
        .btn-outline:hover {
            background: var(--color-brand-light);
        }
        .btn-ghost-light {
            background: rgba(255, 255, 255, .08);
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, .7);
            backdrop-filter: blur(4px);
        }
        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, .18);
            border-color: #fff;
        }

        .page-banner {
            position: relative;
            min-height: 340px;
            display: flex;
            align-items: center;
            margin-top: var(--nav-height);
            background-size: cover;
            background-position: center;
            color: #fff;
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 23, 42, .72), rgba(15, 23, 42, .38) 58%, rgba(15, 23, 42, .12));
        }
        .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 72px 0;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .2);
            border: 1px solid rgba(255, 255, 255, .35);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .02em;
            backdrop-filter: blur(4px);
        }
        .banner-title {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
            margin: 18px 0 20px;
            color: #fff;
        }
        .banner-desc {
            font-size: 16px;
            line-height: 1.85;
            opacity: .92;
            max-width: 680px;
            margin: 0 0 28px;
        }
        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-head {
            max-width: 720px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 999px;
            background: var(--color-brand-light);
            color: var(--color-brand);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-ink);
            margin: 0 0 12px;
            letter-spacing: -.01em;
        }
        .section-head p {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0;
        }

        .feature-card {
            background: #fff;
            border: 1px solid #EEF2F7;
            border-radius: 16px;
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: transform .18s ease, box-shadow .18s ease;
        }
        .feature-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--color-brand-light);
            color: var(--color-brand);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-ink);
            margin: 0 0 8px;
        }
        .feature-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted);
            margin: 0;
        }

        .steps-grid {
            position: relative;
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
        }
        .step-line {
            position: absolute;
            top: 28px;
            left: 8%;
            right: 8%;
            height: 2px;
            background: linear-gradient(90deg, var(--color-brand-light), var(--color-brand), var(--color-brand-light));
            border-radius: 2px;
            z-index: 0;
        }
        .step-card {
            position: relative;
            z-index: 1;
            background: #fff;
            border-radius: 16px;
            padding: 28px 20px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid #EEF2F7;
            transition: all .18s ease;
            text-align: center;
        }
        .step-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: var(--color-brand);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(43, 108, 230, .3);
        }
        .step-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-ink);
            margin: 0 0 10px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0 0 16px;
        }
        .step-media {
            border-radius: 12px;
            overflow: hidden;
            background: #F8FAFC;
        }
        .step-media img {
            width: 100%;
            height: 110px;
            object-fit: cover;
        }

        .check-card {
            background: var(--color-brand-light);
            border-radius: 16px;
            padding: 24px;
            border: 1px solid rgba(43, 108, 230, .08);
            transition: transform .18s ease, box-shadow .18s ease;
        }
        .check-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .check-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            color: var(--color-brand);
        }
        .check-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-ink);
            margin: 0 0 8px;
        }
        .check-card p {
            font-size: 14px;
            color: #475569;
            line-height: 1.7;
            margin: 0;
        }

        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            padding: 32px 0;
        }
        .split-block+.split-block {
            border-top: 1px solid var(--color-line);
        }
        .split-card {
            background: #fff;
            border-radius: 24px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid #EEF2F7;
        }
        .split-card img {
            border-radius: 16px;
            width: 100%;
            height: 280px;
            object-fit: cover;
        }
        .split-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-ink);
            margin: 0 0 12px;
        }
        .split-text p {
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.8;
            margin: 0;
        }
        .split-text ul {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .split-text li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            font-size: 14px;
            color: #475569;
        }
        .split-text li svg {
            color: var(--color-emerald);
            flex-shrink: 0;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid #EEF2F7;
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow .2s ease;
        }
        .faq-item.active {
            box-shadow: var(--shadow-hover);
            border-color: var(--color-brand-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: var(--color-ink);
            line-height: 1.5;
            transition: color .15s ease;
        }
        .faq-question:hover {
            color: var(--color-brand);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-brand-light);
            color: var(--color-brand);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all .2s ease;
        }
        .faq-item.active .faq-icon {
            background: var(--color-brand);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .28s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-muted);
        }

        .cta-section {
            padding: 64px 0;
            background: linear-gradient(180deg, var(--color-canvas) 0%, #EAF2FC 100%);
        }
        .cta-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            background: #fff;
            border-radius: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid #EEF2F7;
            padding: 48px;
            align-items: center;
        }
        .cta-left h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-ink);
            margin: 0 0 12px;
        }
        .cta-left p {
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0 0 24px;
        }
        .login-panel {
            background: #F8FAFC;
            border-radius: 20px;
            padding: 32px;
            border: 1px solid #EEF2F7;
        }
        .login-panel h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-ink);
            margin: 0 0 20px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: #475569;
            margin-bottom: 8px;
        }
        .form-input {
            width: 100%;
            height: 44px;
            border: 1px solid #CBD5E1;
            border-radius: .5rem;
            padding: 0 14px;
            font-size: 14px;
            background: #fff;
            color: var(--color-ink);
            outline: none;
            transition: border-color .15s ease, box-shadow .15s ease;
        }
        .form-input:focus {
            border-color: var(--color-brand);
            box-shadow: 0 0 0 3px rgba(43, 108, 230, .15);
        }
        .field-error {
            display: none;
            font-size: 12px;
            color: #DC2626;
            margin-top: 6px;
        }
        .form-group.error .form-input {
            border-color: #DC2626;
        }
        .form-group.error .field-error {
            display: block;
        }
        .form-group.success .form-input {
            border-color: var(--color-emerald);
        }
        .code-row {
            display: flex;
            gap: 10px;
        }
        .code-row .form-input {
            flex: 1;
        }
        .btn-code {
            height: 44px;
            padding: 0 16px;
            border: 1px solid var(--color-brand);
            background: #fff;
            color: var(--color-brand);
            border-radius: .5rem;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all .15s ease;
        }
        .btn-code:hover {
            background: var(--color-brand-light);
        }
        .btn-code:disabled {
            opacity: .5;
            cursor: not-allowed;
        }
        .btn-block {
            width: 100%;
            padding: 14px 24px;
            font-size: 16px;
        }
        .form-tip {
            font-size: 12px;
            color: var(--color-muted);
            text-align: center;
            margin: 14px 0 0;
        }
        .form-success {
            display: none;
            background: #ECFDF5;
            border: 1px solid #A7F3D0;
            color: #059669;
            border-radius: 12px;
            padding: 12px 16px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 16px;
        }
        .form-success.show {
            display: block;
        }

        .site-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 64px 0 0;
            margin-top: 0;
        }
        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            margin: 16px 0 20px;
            max-width: 360px;
            color: #94A3B8;
        }
        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 12px;
        }
        .footer-col a {
            color: #94A3B8;
            font-size: 14px;
            transition: color .15s ease;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-contact p {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            margin: 0 0 14px;
            line-height: 1.6;
        }
        .footer-contact svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, .15);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
        }
        .footer-bottom a {
            color: #94A3B8;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 1024px) {
            .site-nav-inner {
                padding: 0 16px;
            }
            .nav-logo-text {
                font-size: 16px;
            }
            .nav-tabs {
                overflow-x: auto;
                scrollbar-width: none;
            }
            .nav-tabs::-webkit-scrollbar {
                display: none;
            }
            .nav-tab {
                white-space: nowrap;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-line {
                display: none;
            }
            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .site-nav {
                height: 56px;
            }
            .site-nav-inner {
                gap: 12px;
            }
            .nav-tabs {
                position: absolute;
                top: calc(100% + 6px);
                left: 16px;
                right: 16px;
                background: #fff;
                border-radius: 14px;
                box-shadow: var(--shadow-hover);
                padding: 10px;
                display: none;
                flex-wrap: nowrap;
                overflow-x: auto;
                gap: 8px;
                border: 1px solid #EEF2F7;
            }
            .nav-tabs.open {
                display: flex;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .page-banner {
                min-height: 300px;
                margin-top: 56px;
            }
            .banner-inner {
                padding: 48px 0;
            }
            .banner-title {
                font-size: 30px;
            }
            .banner-desc {
                font-size: 15px;
            }
            .section {
                padding: 40px 0;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 24px 0;
            }
            .split-card img {
                height: 220px;
            }
            .cta-panel {
                grid-template-columns: 1fr;
                padding: 24px;
                gap: 28px;
            }
            .cta-left h2 {
                font-size: 22px;
            }
            .login-panel {
                padding: 24px;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .faq-question {
                font-size: 16px;
                padding: 18px 16px;
            }
            .faq-answer-inner {
                padding: 0 16px 18px;
            }
            .banner-actions .btn-main,
            .banner-actions .btn-ghost-light,
            .banner-actions .btn-amber,
            .banner-actions .btn-outline {
                width: 100%;
            }
            .code-row {
                flex-direction: column;
                gap: 8px;
            }
            .btn-code {
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #2B6CE6;
  --primary-hover: #1E56C4;
  --primary-active: #17409E;
  --primary-light: #E8F0FE;
  --amber: #F59E0B;
  --amber-hover: #D97706;
  --green: #10B981;
  --green-hover: #059669;
  --bg-page: #F5F9FC;
  --bg-card: #FFFFFF;
  --text-head: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --line: #E2E8F0;
  --radius-xl: 20px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 1px 3px rgba(15,23,42,0.06), 0 4px 12px rgba(15,23,42,0.04);
  --shadow-hover: 0 8px 24px rgba(15,23,42,0.08);
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-page);
  color: var(--text-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul, ol, li { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
}

/* ===== Header ===== */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background: rgba(255,255,255,0.96);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 4px rgba(15,23,42,0.03);
}
.site-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  gap: 16px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 0.85; }
.nav-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}
.nav-logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-head);
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex: 1;
  justify-content: center;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  background: transparent;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.nav-tab:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-tab.active {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}
.nav-tab:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.nav-cta { flex-shrink: 0; }
.btn-main {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 10px;
  border: none;
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(43,108,230,0.2);
}
.btn-main:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-hover);
}
.btn-main:active {
  background: var(--primary-active);
  transform: translateY(0);
  box-shadow: none;
}
.btn-main:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
@media (max-width: 768px) {
  .site-nav { height: 56px; }
  .site-nav-inner { padding: 0 16px; gap: 10px; }
  .nav-logo-text { font-size: 15px; }
  .nav-cta .btn-main { padding: 8px 14px; font-size: 13px; }
  .nav-tabs { justify-content: flex-start; }
  .nav-tab { padding: 6px 14px; font-size: 13px; }
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 136px 0 64px;
  background:
    linear-gradient(115deg, rgba(255,255,255,0.97) 0%, rgba(255,255,255,0.87) 45%, rgba(245,249,252,0.72) 100%),
    url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  border-bottom: 1px solid var(--line);
}
.banner-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.banner-breadcrumb a {
  color: var(--primary);
  transition: color 0.2s;
}
.banner-breadcrumb a:hover { color: var(--primary-hover); }
.banner-breadcrumb .sep { color: var(--text-muted); opacity: 0.6; }
.page-banner h1 {
  font-size: 40px;
  font-weight: 700;
  color: var(--text-head);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}
.page-banner .banner-desc {
  max-width: 680px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
}
@media (max-width: 768px) {
  .page-banner { padding: 110px 0 44px; }
  .page-banner h1 { font-size: 30px; }
  .page-banner .banner-desc { font-size: 14px; }
}

/* ===== Section title helpers ===== */
.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-head);
  line-height: 1.3;
  margin: 14px 0 12px;
}
@media (max-width: 768px) {
  .section-title { font-size: 24px; }
}

/* ===== Info Section (alternating) ===== */
.info-section {
  padding: 72px 0;
  background: var(--bg-card);
}
.info-section.alt {
  background: var(--bg-page);
}
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.info-media {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.info-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.info-grid:hover .info-media img {
  transform: scale(1.02);
}
.info-content { max-width: 520px; }
.info-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 20px;
}
.info-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}
.info-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.55;
}
.check-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 10px;
  border: 1.5px solid var(--primary);
  transition: all 0.2s ease;
}
.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}
.btn-outline:active {
  background: #d8e6fd;
  transform: translateY(0);
}
.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
@media (max-width: 1024px) {
  .info-grid { gap: 36px; }
  .info-media img { height: 280px; }
}
@media (max-width: 768px) {
  .info-section { padding: 48px 0; }
  .info-grid { grid-template-columns: 1fr; gap: 28px; }
  .info-content { max-width: 100%; }
  .info-media img { height: 220px; }
}

/* ===== Stats ===== */
.stats-section {
  padding: 64px 0;
  background: var(--primary-light);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.stat-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.stat-num {
  font-size: 38px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}
@media (max-width: 768px) {
  .stats-section { padding: 44px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item { padding: 22px 14px; }
  .stat-num { font-size: 30px; }
}

/* ===== FAQ ===== */
.faq-section {
  padding: 72px 0;
  background: var(--bg-card);
}
.faq-head {
  max-width: 640px;
  margin: 0 auto 44px;
  text-align: center;
}
.faq-head p {
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 15px;
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.faq-item.open {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43,108,230,0.08);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-head);
  transition: background 0.2s;
}
.faq-q:hover { background: #fafbff; }
.faq-q .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.open .faq-a {
  max-height: 600px;
}
.faq-a-inner {
  padding: 0 22px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}
.faq-a-inner p { margin-bottom: 8px; }
.faq-a-inner p:last-child { margin-bottom: 0; }
@media (max-width: 768px) {
  .faq-section { padding: 48px 0; }
  .faq-q { padding: 16px 16px; font-size: 15px; }
  .faq-a-inner { padding: 0 16px 16px; font-size: 13px; }
}

/* ===== CTA ===== */
.cta-section {
  padding: 72px 0;
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-page) 100%);
}
.cta-card {
  max-width: 860px;
  margin: 0 auto;
  background:
    radial-gradient(circle at 20% 30%, rgba(43,108,230,0.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(245,158,11,0.06) 0%, transparent 50%),
    var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 56px 40px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s ease;
}
.cta-card:hover { box-shadow: var(--shadow-hover); }
.cta-card h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-head);
  margin: 14px 0 12px;
  line-height: 1.35;
}
.cta-card > p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.cta-buttons {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-lg {
  padding: 13px 30px;
  font-size: 15px;
}
.btn-amber {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--amber);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 10px;
  border: none;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px rgba(245,158,11,0.25);
}
.btn-amber:hover {
  background: var(--amber-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(245,158,11,0.3);
}
.btn-amber:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-amber:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}
@media (max-width: 768px) {
  .cta-section { padding: 48px 0; }
  .cta-card { padding: 36px 20px; border-radius: 20px; }
  .cta-card h2 { font-size: 22px; }
  .cta-buttons { flex-direction: column; }
  .cta-buttons .btn-main, .cta-buttons .btn-outline, .cta-buttons .btn-amber {
    width: 100%;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 56px 0 0;
  font-size: 14px;
}
.site-footer a {
  transition: color 0.2s ease;
}
.site-footer a:hover { color: #fff; }
.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand { max-width: 340px; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: #94A3B8;
  margin-bottom: 18px;
}
.footer-col h3 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li a {
  color: #94A3B8;
  font-size: 14px;
  transition: color 0.2s;
}
.footer-col ul li a:hover { color: #fff; }
.footer-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  color: #94A3B8;
  font-size: 14px;
  line-height: 1.5;
}
.footer-contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
}
.footer-bottom {
  border-top: 1px solid rgba(148,163,184,0.15);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #64748B;
}
.footer-bottom a { color: #94A3B8; }
.footer-bottom a:hover { color: #fff; }
@media (max-width: 900px) {
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 640px) {
  .footer-main { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .site-footer { padding-top: 40px; }
}

/* ===== Focus / selection / misc ===== */
::selection {
  background: var(--primary-light);
  color: var(--primary);
}