/* roulang page: index */
/* ===== Design Tokens ===== */
:root {
  --primary: #E85D7E;
  --primary-hover: #C9486A;
  --primary-light: #FDF0F3;
  --dark: #201F2A;
  --dark-secondary: #2B2A38;
  --bg: #FAF8F7;
  --card-bg: #FFFFFF;
  --accent: #F5B454;
  --text: #26262E;
  --text-secondary: #6B7280;
  --border: rgba(32, 31, 42, 0.10);
  --success: #3FA67A;
  --warning: #E2783A;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-badge: 999px;
  --radius-input: 8px;
  --shadow-card: 0 4px 12px rgba(32,31,42,0.06);
  --shadow-hover: 0 10px 24px rgba(32,31,42,0.12);
  --container-w: 1200px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.75;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: all 0.3s ease; }
a:hover { color: var(--primary-hover); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; border: none; background: none; }
button { cursor: pointer; }

::selection { background: var(--primary-light); color: var(--primary); }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.3s ease;
  text-align: center;
  line-height: 1.4;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border: 1.5px solid var(--primary);
}
.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #fff;
  box-shadow: 0 6px 16px rgba(232, 93, 126, 0.30);
}
.btn-primary:active {
  background: #B63E5E;
  border-color: #B63E5E;
  transform: translateY(1px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: rgba(232, 93, 126, 0.08);
  color: var(--primary-hover);
}
.btn-outline:active { background: rgba(232, 93, 126, 0.10); }
.btn-lg { padding: 15px 36px; font-size: 15px; }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-white {
  background: #fff;
  color: var(--dark);
  border: 1.5px solid #fff;
}
.btn-white:hover { background: #FDECEC; color: var(--dark); box-shadow: 0 6px 16px rgba(0,0,0,0.15); }
.btn:focus-visible {
  outline: 3px solid rgba(232,93,126,0.4);
  outline-offset: 2px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 34px;
  height: 34px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-icon svg { width: 18px; height: 18px; fill: none; stroke: var(--primary); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 2px;
  white-space: nowrap;
}
.nav-link:hover { color: var(--primary); }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--text); font-weight: 700; }
.nav-link.active::after { width: 100%; background: var(--primary); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-actions .btn { padding: 10px 20px; font-size: 13px; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background-color: var(--dark);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(32,31,42,0.72) 0%, rgba(32,31,42,0.50) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 68px 20px 40px;
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
}
.hero h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
  max-width: 780px;
  margin-bottom: 18px;
}
.hero h1 .highlight {
  color: var(--accent);
  position: relative;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  margin-bottom: 30px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}
.hero-actions .btn-primary { min-width: 160px; }
.hero-actions .btn-outline {
  border-color: rgba(255,255,255,0.6);
  color: #fff;
}
.hero-actions .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.18);
}
.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-number {
  font-family: 'Inter', 'Helvetica Neue', sans-serif;
  font-size: 30px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.70);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255,255,255,0.6);
  animation: pulse-down 2s infinite ease-in-out;
  font-size: 20px;
  cursor: pointer;
}
@keyframes pulse-down {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.6; }
  50% { transform: translate(-50%, 8px); opacity: 1; }
}

/* ===== Sections ===== */
.section { padding: 88px 0; }
.section-header {
  margin-bottom: 48px;
  max-width: 720px;
}
.section-header.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-header h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 10px;
}
.section-header h2 .highlight { color: var(--primary); }
.section-header p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Services ===== */
.services-section { background: var(--bg); }
.services-grid { row-gap: 24px; }
.service-card {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  padding: 30px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  position: relative;
  height: 100%;
  transition: all 0.3s ease;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.service-icon {
  width: 52px;
  height: 52px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  margin-bottom: 16px;
}
.service-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.service-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}
.text-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.text-link:hover { color: var(--primary-hover); gap: 10px; }
.badge {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 3px 12px;
  border-radius: var(--radius-badge);
  font-size: 12px;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
}
.badge-hot { background: var(--primary); }
.badge-new { background: var(--success); }

/* ===== Stats Section ===== */
.stats-section {
  background: var(--dark);
  padding: 88px 0;
}
.stats-section .section-header h2 { color: #fff; }
.stats-section .section-header p { color: rgba(255,255,255,0.65); }
.stats-grid { row-gap: 32px; }
.stat-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  padding: 20px 0;
}
.stat-num {
  font-family: 'Inter', 'Helvetica Neue', sans-serif;
  font-size: 42px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}
.stat-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.70);
}

/* ===== News Section ===== */
.news-section { background: var(--card-bg); }
.news-list { display: flex; flex-direction: column; gap: 0; }
.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 16px;
  border-radius: 10px;
  transition: all 0.3s ease;
  border-bottom: 1px solid var(--border);
}
.news-item:last-child { border-bottom: none; }
.news-item:hover { background: var(--primary-light); padding-left: 22px; }
.news-date {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  font-family: 'Inter', monospace;
}
.news-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}
.news-item:hover .news-title { color: var(--primary); }
.news-sidebar {
  background: var(--bg);
  border-radius: var(--radius-card);
  padding: 26px;
  border: 1px solid var(--border);
}
.news-sidebar h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text);
}
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-badge);
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.3s ease;
  border: none;
}
.tag:hover { background: var(--primary); color: #fff; }
.tag-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.tag-outline:hover { border-color: var(--primary); color: var(--primary); background: transparent; }

/* ===== Cases Section ===== */
.cases-section { background: var(--bg); }
.case-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 64px;
}
.case-row:last-child { margin-bottom: 0; }
.case-image {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  position: relative;
  aspect-ratio: 4/3;
  background: var(--primary-light);
}
.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.case-image:hover img { transform: scale(1.04); }
.case-text h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.4;
}
.case-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}
.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.case-tags .tag {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 4px 12px;
}
.case-tags .tag:hover { border-color: var(--primary); color: var(--primary); background: transparent; }
.case-row.case-reverse .case-image { order: 2; }
.case-row.case-reverse .case-text { order: 1; }

/* ===== Plans Section ===== */
.plans-section { background: var(--card-bg); }
.plans-grid { row-gap: 28px; }
.plan-card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-card);
  padding: 34px 30px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  position: relative;
}
.plan-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.plan-card .plan-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}
.plan-card .plan-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 18px;
}
.plan-card ul {
  flex: 1;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.plan-card ul li {
  font-size: 14px;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}
.plan-card ul li i { color: var(--success); font-size: 13px; margin-top: 3px; }
.plan-card .btn { width: 100%; }
.plan-featured {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: 0 8px 24px rgba(232, 93, 126, 0.15);
  position: relative;
}
.plan-featured .badge {
  top: -12px;
  right: 24px;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 12px rgba(245,180,84,0.4);
}

/* ===== FAQ Section ===== */
.faq-section { background: var(--bg); }
.accordion {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  overflow: hidden;
}
.accordion-item { border-bottom: 1px solid var(--border); }
.accordion-item:last-child { border-bottom: none; }
.accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 26px;
  min-height: 56px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  transition: all 0.3s ease;
  cursor: pointer;
}
.accordion-title:hover { background: var(--primary-light); color: var(--primary); }
.accordion-title::after {
  content: '\f107';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 14px;
  color: var(--text-secondary);
  transition: transform 0.3s ease;
}
.accordion-item.is-active > .accordion-title { color: var(--primary); }
.accordion-item.is-active > .accordion-title::after { transform: rotate(180deg); }
.accordion-content {
  padding: 0 26px 22px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  border-left: 2px solid var(--primary);
  border-radius: 0 8px 8px 0;
  background: var(--primary-light);
}
.accordion-content p { margin-bottom: 8px; }
.accordion-content ul { list-style: disc; padding-left: 18px; display: flex; flex-direction: column; gap: 4px; }

/* ===== Contact Section ===== */
.contact-section { background: var(--primary-light); }
.contact-left h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}
.contact-left p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
}
.contact-email {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  background: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-btn);
  box-shadow: var(--shadow-card);
  width: fit-content;
}
.contact-email i { font-size: 18px; }
.contact-form {
  background: var(--card-bg);
  border-radius: var(--radius-card);
  padding: 30px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-form label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.contact-form label .required { color: var(--primary); margin-left: 2px; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  padding: 0 14px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  transition: all 0.3s ease;
}
.contact-form textarea {
  height: 120px;
  padding: 12px 14px;
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,93,126,0.15);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(107,114,128,0.6); }
.contact-form .btn {
  align-self: flex-start;
  min-width: 160px;
}
.contact-form .btn i { transition: transform 0.3s ease; }
.contact-form .btn:hover i { transform: translateX(4px); }
.form-success {
  background: #E8F7F0;
  color: var(--success);
  padding: 14px 18px;
  border-radius: var(--radius-input);
  font-size: 14px;
  font-weight: 500;
  text-align: center;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}
.footer-grid { row-gap: 32px; margin-bottom: 40px; }
.footer-brand { margin-bottom: 14px; }
.footer-brand .logo-text {
  color: #fff;
  font-size: 20px;
}
.footer-about {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  margin-bottom: 16px;
}
.footer-social {
  display: flex;
  gap: 12px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
}
.footer-social a:hover { background: var(--primary); color: #fff; }
.site-footer h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  line-height: 1.4;
}
.footer-links a:hover { color: #F5A3BE; }
.footer-copyright {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section { padding: 72px 0; }
  .case-row { gap: 32px; }
  .main-nav { gap: 20px; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-header { margin-bottom: 32px; }
  .section-header h2 { font-size: 24px; }
  .hero { min-height: 480px; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-number { font-size: 24px; }
  .case-row { grid-template-columns: 1fr; gap: 24px; }
  .case-row.case-reverse .case-image { order: 1; }
  .case-row.case-reverse .case-text { order: 2; }
  .case-image { aspect-ratio: 16/10; }
  .plans-grid .cell { flex: 0 0 100%; max-width: 100%; }
  .accordion-title { padding: 0 18px; font-size: 14px; }
  .accordion-content { padding: 0 18px 18px; }
  .contact-form { padding: 20px; }
  .contact-form .btn { width: 100%; }
  .stat-num { font-size: 32px; }
  .footer-grid { margin-bottom: 24px; }
  
  /* Mobile nav */
  .hamburger { display: flex; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--primary-light);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 16px;
    transform: translateY(-120%);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 999;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
  }
  .nav-link { font-size: 16px; }
  .header-actions {
    display: none;
  }
  .header-actions.mobile-open {
    display: flex;
    position: fixed;
    top: 300px;
    right: 24px;
  }
}

@media (max-width: 520px) {
  .logo-text { font-size: 16px; }
  .logo-icon { width: 30px; height: 30px; }
  .hero-actions .btn { width: 100%; }
  .case-text h3 { font-size: 18px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .stat-number { font-size: 20px; }
  .stat-label { font-size: 12px; }
}

/* ===== Utility ===== */
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mb-2 { margin-bottom: 16px; }
.text-center { text-align: center; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== Design Tokens ===== */
:root {
  --primary: #E85D7E;
  --primary-hover: #C9486A;
  --primary-light: #FDF0F3;
  --dark: #201F2A;
  --dark-secondary: #2B2A38;
  --bg: #FAF8F7;
  --card-bg: #FFFFFF;
  --accent: #F5B454;
  --text: #26262E;
  --text-secondary: #6B7280;
  --border: rgba(32, 31, 42, 0.10);
  --success: #3FA67A;
  --warning: #E2783A;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-badge: 999px;
  --radius-input: 8px;
  --shadow-card: 0 4px 12px rgba(32,31,42,0.06);
  --shadow-hover: 0 10px 24px rgba(32,31,42,0.12);
  --container-w: 1200px;
}

/* ===== Reset / Base ===== */
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.75;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: all 0.3s ease; }
a:hover { color: var(--primary-hover); }
button, input, select, textarea { font-family: inherit; font-size: inherit; border: none; background: none; }
button { cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.3s ease;
  text-align: center;
  line-height: 1.4;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border: 1.5px solid var(--primary);
}
.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #fff;
  box-shadow: 0 6px 16px rgba(232, 93, 126, 0.30);
}
.btn-primary:active {
  background: #B63E5E;
  border-color: #B63E5E;
  transform: translateY(1px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: rgba(232, 93, 126, 0.08);
  color: var(--primary-hover);
}
.btn-outline:active { background: rgba(232, 93, 126, 0.10); }
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-white {
  background: #fff;
  color: var(--dark);
  border: 1.5px solid #fff;
}
.btn-white:hover { background: #FDECEC; color: var(--dark); box-shadow: 0 6px 16px rgba(0,0,0,0.15); }
.btn:focus-visible {
  outline: 3px solid rgba(232,93,126,0.4);
  outline-offset: 2px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 34px;
  height: 34px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-icon svg { width: 18px; height: 18px; fill: none; stroke: var(--primary); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 2px;
  white-space: nowrap;
}
.nav-link:hover { color: var(--primary); }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--text); font-weight: 700; }
.nav-link.active::after { width: 100%; background: var(--primary); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-actions .btn { padding: 10px 20px; font-size: 13px; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--dark);
}
.page-banner-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.jpg');
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.page-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(32,31,42,0.72) 0%, rgba(232,93,126,0.35) 100%);
  z-index: 1;
}
.page-banner-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 60px 20px;
  color: #fff;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 18px;
}
.breadcrumb a { color: rgba(255,255,255,0.75); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-size: 12px; }
.page-banner h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 14px;
  color: #fff;
}
.page-banner h1 .highlight { color: var(--accent); }
.page-banner p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 720px;
}

/* ===== Filter Bar ===== */
.filter-section {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 22px 0;
}
.filter-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 22px;
  border-radius: var(--radius-badge);
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
}
.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(232,93,126,0.25);
}

/* ===== Version List ===== */
.version-list-section { padding: 88px 0; }
.section-header {
  margin-bottom: 40px;
  max-width: 720px;
}
.section-header .tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-badge);
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}
.section-header h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 10px;
  color: var(--text);
}
.section-header p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}
.version-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.version-card {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  gap: 24px;
  align-items: center;
  background: var(--card-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  padding: 20px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.version-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.version-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(232,93,126,0.25);
}
.version-card:hover::before { opacity: 1; }
.version-card.hidden { display: none; }
.version-cover {
  width: 160px;
  height: 100px;
  border-radius: 12px;
  overflow: hidden;
  background: var(--primary-light);
  flex-shrink: 0;
}
.version-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.version-card:hover .version-cover img { transform: scale(1.04); }
.version-body {
  min-width: 0;
}
.version-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.version-title-row h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin: 0;
}
.status-badge {
  display: inline-block;
  padding: 2px 12px;
  border-radius: var(--radius-badge);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}
.status-badge.success { background: rgba(63,166,122,0.12); color: var(--success); }
.status-badge.accent { background: rgba(245,180,84,0.18); color: #B57914; }
.status-badge.history { background: rgba(107,114,128,0.12); color: var(--text-secondary); }
.status-badge.warning { background: rgba(226,120,58,0.15); color: var(--warning); }
.version-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.version-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}
.version-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--border);
}
.version-action {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-shrink: 0;
}

/* ===== Pagination ===== */
.pagination-wrapper {
  display: flex;
  justify-content: center;
  margin-top: 48px;
}
.pagination {
  display: flex;
  align-items: center;
  gap: 8px;
}
.pagination .page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border-radius: var(--radius-badge);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  background: #fff;
  transition: all 0.3s ease;
}
.pagination .page-link:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.pagination .page-link.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(232,93,126,0.25);
}
.pagination .page-link.disabled {
  opacity: 0.45;
  pointer-events: none;
}
.page-prev i, .page-next i { font-size: 12px; }

/* ===== FAQ + Steps ===== */
.faq-steps-section {
  background: linear-gradient(180deg, #FAF6F7 0%, #FDF0F3 100%);
  padding: 88px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.faq-steps-section .section-header h2 { font-size: 28px; }
.accordion-list .accordion-item {
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}
.accordion-list .accordion-item:hover { box-shadow: var(--shadow-hover); }
.accordion-list .accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: color 0.3s ease;
  background: #fff;
  border: none;
  position: relative;
}
.accordion-list .accordion-title::after {
  content: '\f107';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 15px;
  color: var(--text-secondary);
  transition: transform 0.3s ease;
}
.accordion-list .accordion-item.is-active .accordion-title::after {
  transform: rotate(180deg);
  color: var(--primary);
}
.accordion-list .accordion-item.is-active .accordion-title { color: var(--primary); }
.accordion-list .accordion-content {
  padding: 0 22px 18px;
  background: #FBF7F9;
  border-left: 2px solid var(--primary);
  border-radius: 0 8px 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: none;
}
.accordion-list .accordion-item.is-active .accordion-content { display: block; }
.accordion-list .accordion-content p { margin-bottom: 8px; }
.accordion-list .accordion-content p:last-child { margin-bottom: 0; }
.faq-col { max-width: 100%; }
.steps-col {
  background: #fff;
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  padding: 34px;
}
.steps-col h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.steps-col > p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 26px;
}
.steps-list {
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.steps-list li {
  position: relative;
  padding-left: 52px;
  counter-increment: step;
}
.steps-list li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid rgba(232,93,126,0.3);
}
.steps-list li h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.steps-list li p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== CTA Banner ===== */
.cta-banner {
  position: relative;
  padding: 64px 0;
  background: linear-gradient(100deg, var(--primary) 0%, #C9486A 100%);
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
}
.cta-banner .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.cta-banner h2 {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.cta-banner p {
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
}
.footer-grid { padding-bottom: 40px; }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-text {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}
.footer-about {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.75);
  font-size: 15px;
  transition: all 0.3s ease;
}
.footer-social a:hover {
  background: var(--primary);
  color: #fff;
}
.site-footer h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-links a {
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  line-height: 30px;
  transition: color 0.3s ease;
}
.footer-links a:hover { color: #F5A3BE; }
.footer-copyright {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
}
.footer-copyright p {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0;
    display: none;
    box-shadow: 0 8px 24px rgba(32,31,42,0.15);
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open { display: flex; }
  .nav-link {
    display: block;
    width: 100%;
    padding: 14px 24px;
    font-size: 15px;
    border-bottom: 1px solid rgba(32,31,42,0.05);
  }
  .nav-link::after { display: none; }
  .hamburger { display: flex; }
  .header-actions { display: none; }
  .page-banner h1 { font-size: 32px; }
  .section-header h2 { font-size: 26px; }
  .version-card {
    grid-template-columns: 140px 1fr;
    gap: 16px;
  }
  .version-action {
    grid-column: 2;
    justify-content: flex-start;
    padding-top: 6px;
  }
}

@media (max-width: 767px) {
  .section { padding: 56px 0; }
  .version-list-section { padding: 56px 0; }
  .faq-steps-section { padding: 56px 0; }
  .page-banner { min-height: 280px; }
  .page-banner-content { padding: 40px 20px; }
  .page-banner h1 { font-size: 28px; }
  .page-banner p { font-size: 14px; }
  .version-card {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .version-cover {
    width: 100%;
    height: 180px;
    margin-bottom: 16px;
  }
  .version-action {
    grid-column: 1;
    padding-top: 14px;
  }
  .version-action .btn { width: 100%; }
  .filter-bar { gap: 8px; }
  .filter-btn { padding: 7px 16px; font-size: 13px; }
  .cta-banner .container { flex-direction: column; align-items: flex-start; }
  .cta-banner h2 { font-size: 23px; }
  .steps-col { padding: 24px 20px; }
  .footer-grid { row-gap: 32px; }
}

@media (max-width: 520px) {
  .version-meta { gap: 6px; }
  .version-title-row h3 { font-size: 16px; }
  .version-desc { font-size: 13px; }
  .status-badge { padding: 2px 8px; font-size: 11px; }
  .logo-text { font-size: 16px; }
  .hamburger span { width: 19px; }
}