/* roulang page: index */
:root {
  --primary: #0E8D8A;
  --primary-dark: #0C7A77;
  --primary-light: rgba(14, 141, 138, 0.10);
  --accent: #F2A63C;
  --accent-dark: #E08C2A;
  --accent-light: rgba(242, 166, 60, 0.16);
  --bg: #F7F9F8;
  --dark: #14333C;
  --dark-2: #1B3F4A;
  --text: #1E2A33;
  --text-secondary: #6B7A80;
  --text-light: #9AA7AD;
  --border: #E3E8E6;
  --success: #2E9E62;
  --error: #D64541;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 4px 12px rgba(20,51,60,0.06);
  --shadow-lg: 0 8px 24px rgba(20,51,60,0.10);
  --shadow-accent: 0 6px 18px rgba(242,166,60,0.35);
  --sidebar-w: 240px;
  --transition: 0.2s ease;
  --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-stack); background: var(--bg); color: var(--text); line-height: 1.75; font-size: 16px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding: 0 28px; border-radius: var(--radius-md); font-size: 15px; font-weight: 600; border: 2px solid transparent; cursor: pointer; transition: all var(--transition); white-space: nowrap; }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(14,141,138,0.2); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: var(--shadow-accent); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 8px 22px rgba(224,140,42,0.35); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { background: #ccc; box-shadow: none; cursor: not-allowed; }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); border-color: var(--primary-dark); }
.btn-outline:active { transform: translateY(0); }
.btn-small { height: 38px; padding: 0 20px; font-size: 14px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 14px; border-radius: 20px; font-size: 13px; font-weight: 500; background: var(--primary-light); color: var(--primary); }
.badge-accent { background: var(--accent-light); color: #D9821B; }
/* ===== 布局 ===== */
.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-w); position: fixed; top: 0; left: 0; height: 100vh; background: #fff; border-right: 1px solid var(--border); display: flex; flex-direction: column; z-index: 200; }
.main-wrapper { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; min-height: 100vh; }
/* ===== 侧边栏 ===== */
.sidebar-brand { padding: 32px 24px 24px; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 4px; }
.brand-logo { display: flex; align-items: center; gap: 10px; }
.logo-mark { position: relative; width: 38px; height: 28px; flex-shrink: 0; }
.logo-cloud { position: absolute; top: 2px; left: 0; width: 34px; height: 20px; background: var(--primary); border-radius: 14px; }
.logo-cloud::before { content: ''; position: absolute; width: 16px; height: 16px; background: var(--primary); border-radius: 50%; top: -7px; left: 6px; }
.logo-cloud::after { content: ''; position: absolute; width: 12px; height: 12px; background: var(--primary); border-radius: 50%; top: -2px; right: 3px; }
.logo-arrow { position: absolute; right: -5px; bottom: 1px; width: 0; height: 0; border-left: 9px solid var(--accent); border-top: 5px solid transparent; border-bottom: 5px solid transparent; transform: rotate(15deg); }
.brand-text { font-size: 22px; font-weight: 700; color: var(--dark); letter-spacing: 1px; }
.brand-sub { font-size: 10px; color: var(--text-light); letter-spacing: 2.5px; padding-left: 2px; text-transform: uppercase; }
.sidebar-nav { flex: 1; padding: 24px 16px; display: flex; flex-direction: column; gap: 6px; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 13px 16px; border-radius: 10px; font-size: 15px; font-weight: 500; color: var(--text-secondary); border-left: 4px solid transparent; transition: all var(--transition); }
.nav-item i { width: 18px; text-align: center; font-size: 16px; }
.nav-item:hover { background: var(--primary-light); color: var(--primary); }
.nav-item.active { background: rgba(14,141,138,0.08); color: var(--primary); border-left-color: var(--primary); font-weight: 600; }
.nav-item:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(14,141,138,0.2); }
.sidebar-footer { padding: 20px 24px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 8px; }
.service-status { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-secondary); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 3px rgba(46,158,98,0.2); animation: pulse-dot 2s infinite; }
@keyframes pulse-dot { 0%,100% { box-shadow: 0 0 0 3px rgba(46,158,98,0.2); } 50% { box-shadow: 0 0 0 6px rgba(46,158,98,0.06); } }
.version { font-size: 12px; color: var(--text-light); }
/* ===== 移动端顶部栏 ===== */
.mobile-header { display: none; position: sticky; top: 0; z-index: 150; height: 60px; background: #fff; border-bottom: 1px solid var(--border); padding: 0 20px; align-items: center; justify-content: space-between; }
.mobile-brand { display: flex; align-items: center; gap: 8px; }
.mobile-brand .brand-text { font-size: 19px; }
.mobile-brand .logo-mark { transform: scale(0.85); }
.hamburger { width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--border); background: transparent; display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--dark); transition: all var(--transition); }
.hamburger:hover { background: var(--primary-light); color: var(--primary); }
.hamburger:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(14,141,138,0.2); }
/* ===== 抽屉 ===== */
.drawer-overlay { position: fixed; inset: 0; background: rgba(20,51,60,0.4); z-index: 300; opacity: 0; visibility: hidden; transition: all 0.25s ease; }
.drawer-overlay.open { opacity: 1; visibility: visible; }
.drawer { position: fixed; top: 0; left: 0; width: 280px; height: 100vh; background: #fff; z-index: 310; transform: translateX(-100%); transition: transform 0.25s ease; display: flex; flex-direction: column; padding: 24px 20px; }
.drawer.open { transform: translateX(0); }
.drawer-brand { display: flex; align-items: center; gap: 10px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.drawer-nav { flex: 1; padding-top: 20px; display: flex; flex-direction: column; gap: 8px; }
.drawer-footer { border-top: 1px solid var(--border); padding-top: 16px; }
.drawer-close { position: absolute; top: 16px; right: 16px; width: 32px; height: 32px; border-radius: 6px; border: none; background: var(--bg); cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--text-secondary); }
.drawer-close:hover { background: #ecefec; color: var(--dark); }
/* ===== Hero ===== */
.hero { position: relative; background: var(--dark); overflow: hidden; padding: 80px 0 72px; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.25; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(14,141,138,0.55) 0%, rgba(20,51,60,0.85) 100%); }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.25); color: #fff; padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 500; margin-bottom: 20px; backdrop-filter: blur(4px); }
.hero-badge i { color: var(--accent); }
.hero h1 { font-size: 42px; font-weight: 700; color: #fff; line-height: 1.25; margin-bottom: 16px; letter-spacing: 1px; text-shadow: 0 2px 12px rgba(0,0,0,0.25); }
.hero-subtitle { font-size: 19px; color: rgba(255,255,255,0.92); margin-bottom: 20px; letter-spacing: 3px; font-weight: 500; }
.hero-subtitle span { color: var(--accent); }
.hero-desc { font-size: 15px; color: rgba(255,255,255,0.75); max-width: 460px; line-height: 1.8; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-visual img { border-radius: var(--radius-lg); box-shadow: 0 20px 40px rgba(0,0,0,0.35); border: 1px solid rgba(255,255,255,0.15); }
.hero-visual::after { content: ''; position: absolute; right: -18px; top: -18px; width: 80px; height: 80px; border-radius: 24px; background: rgba(242,166,60,0.25); z-index: -1; filter: blur(6px); }
@media (max-width: 1023px) {
  .hero { padding: 56px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 560px; }
}
/* ===== 数据条 ===== */
.stats { background: #fff; border-bottom: 1px solid var(--border); padding: 40px 0; position: relative; }
.stats::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--primary), var(--accent)); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat-item { text-align: center; padding: 8px 0; }
.stat-number { font-size: 38px; font-weight: 700; color: var(--dark); line-height: 1.2; }
.stat-plus { font-size: 20px; font-weight: 600; color: var(--primary); margin-left: 2px; }
.stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 6px; letter-spacing: 1px; }
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; }
  .stat-number { font-size: 30px; }
}
/* ===== 通用板块 ===== */
.section { padding: 68px 0; }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 44px; }
.section-header h2 { font-size: 29px; font-weight: 700; color: var(--dark); margin-bottom: 10px; position: relative; display: inline-block; }
.section-header p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }
.section-more { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--primary); font-weight: 500; margin-top: 12px; }
.section-more:hover { text-decoration: underline; }
/* ===== 核心功能 ===== */
.features { background: var(--bg); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px 24px; box-shadow: var(--shadow-sm); transition: all var(--transition); position: relative; overflow: hidden; }
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: rgba(14,141,138,0.3); }
.feature-card::before { content: ''; position: absolute; right: -40px; top: -40px; width: 90px; height: 90px; border-radius: 50%; background: rgba(14,141,138,0.04); transition: transform 0.3s ease; }
.feature-card:hover::before { transform: scale(1.6); }
.feature-card span { display: block; margin-bottom: 4px; }
.feature-icon { width: 50px; height: 50px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 19px; margin-bottom: 18px; }
.feature-icon.primary { background: var(--primary-light); color: var(--primary); }
.feature-icon.accent { background: var(--accent-light); color: #D9821B; }
.feature-icon.green { background: rgba(46,158,98,0.1); color: var(--success); }
.feature-card h3 { font-size: 17px; font-weight: 600; color: var(--dark); margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 0; }
.feature-card.wide { grid-column: span 2; }
.feature-card.feature-highlight { background: linear-gradient(135deg, #fff 0%, rgba(14,141,138,0.04) 100%); border-color: rgba(14,141,138,0.2); }
@media (max-width: 1023px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card.wide { grid-column: span 2; }
}
@media (max-width: 640px) {
  .features-grid { grid-template-columns: 1fr; }
  .feature-card.wide { grid-column: span 1; }
}
/* ===== 评价轮播 ===== */
.testimonials { background: linear-gradient(180deg, #fff 0%, var(--bg) 100%); }
.testimonial-wrap { max-width: 860px; margin: 0 auto; position: relative; }
.testimonial-viewport { overflow: hidden; border-radius: var(--radius-lg); }
.testimonial-slide { display: none; padding: 40px 48px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); position: relative; }
.testimonial-slide.active { display: block; animation: fadeSlide 0.4s ease; }
@keyframes fadeSlide { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.testimonial-quote { font-size: 42px; color: var(--primary); font-family: Georgia, serif; line-height: 1; margin-bottom: 12px; }
.testimonial-text { font-size: 16px; color: var(--text); line-height: 1.8; margin-bottom: 20px; }
.testimonial-user { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar { width: 42px; height: 42px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 14px; }
.testimonial-avatar.avatar-1 { background: rgba(14,141,138,0.1); color: var(--primary); }
.testimonial-avatar.avatar-2 { background: rgba(242,166,60,0.14); color: #C5761B; }
.testimonial-avatar.avatar-3 { background: rgba(46,158,98,0.1); color: var(--success); }
.testimonial-name { font-size: 14px; font-weight: 600; color: var(--dark); }
.testimonial-role { font-size: 12px; color: var(--text-light); }
.testimonial-nav { display: flex; align-items: center; justify-content: center; gap: 20px; margin-top: 24px; }
.testimonial-btn { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border); background: #fff; color: var(--dark); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all var(--transition); box-shadow: var(--shadow-sm); }
.testimonial-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.testimonial-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(14,141,138,0.2); }
.testimonial-dots { display: flex; gap: 8px; }
.testimonial-dot { width: 8px; height: 8px; border-radius: 50%; border: none; padding: 0; background: #D5DEDB; cursor: pointer; transition: all var(--transition); }
.testimonial-dot.active { background: var(--primary); width: 24px; border-radius: 8px; }
@media (max-width: 640px) {
  .testimonial-slide { padding: 28px 24px; }
  .testimonial-quote { font-size: 32px; }
}
/* ===== 保障条 ===== */
.guarantees { background: #fff; padding: 68px 0; border-top: 1px solid var(--border); }
.guarantees-grid { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 0; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; background: var(--bg); }
.guarantee-item { padding: 32px 28px; text-align: center; background: #fff; position: relative; transition: all var(--transition); }
.guarantee-item:hover { background: #FCFEFD; }
.guarantee-item.featured { background: linear-gradient(160deg, rgba(14,141,138,0.06) 0%, #fff 100%); }
.guarantee-item i { font-size: 26px; color: var(--primary); margin-bottom: 14px; display: block; }
.guarantee-item.accent i { color: #D9821B; }
.guarantee-item h4 { font-size: 16px; font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.guarantee-item p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.guarantee-item + .guarantee-item { border-left: 1px solid var(--border); }
@media (max-width: 1023px) {
  .guarantees-grid { grid-template-columns: repeat(2, 1fr); }
  .guarantee-item:nth-child(3) { border-left: none; border-top: 1px solid var(--border); }
  .guarantee-item:nth-child(4) { border-top: 1px solid var(--border); }
}
@media (max-width: 640px) {
  .guarantees-grid { grid-template-columns: 1fr; }
  .guarantee-item + .guarantee-item { border-left: none; border-top: 1px solid var(--border); }
}
/* ===== 最新动态 ===== */
.latest-section { background: var(--bg); padding: 68px 0; }
.latest-list { max-width: 900px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.cms-item { display: flex; align-items: center; gap: 20px; background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 20px 24px; transition: all var(--transition); }
.cms-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); border-color: rgba(14,141,138,0.3); }
.cms-category { flex-shrink: 0; padding: 4px 12px; border-radius: 6px; background: var(--primary-light); color: var(--primary); font-size: 12px; font-weight: 500; min-width: 64px; text-align: center; }
.cms-content { flex: 1; min-width: 0; }
.cms-content h3 { font-size: 16px; font-weight: 600; color: var(--dark); margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color var(--transition); }
.cms-item:hover .cms-content h3 { color: var(--primary); }
.cms-content p { font-size: 13px; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cms-date { flex-shrink: 0; font-size: 13px; color: var(--text-light); }
.cms-read { flex-shrink: 0; font-size: 13px; color: var(--primary); font-weight: 500; display: inline-flex; align-items: center; gap: 4px; }
.cms-read i { font-size: 11px; transition: transform var(--transition); }
.cms-item:hover .cms-read i { transform: translateX(3px); }
.empty-state { background: #fff; border: 1px dashed var(--border); border-radius: 14px; padding: 64px 32px; text-align: center; }
.empty-state i { font-size: 34px; color: var(--text-light); margin-bottom: 12px; display: block; }
.empty-state p { font-size: 15px; color: var(--text-secondary); }
@media (max-width: 768px) {
  .cms-item { flex-wrap: wrap; padding: 16px 18px; gap: 10px; }
  .cms-content { width: 100%; order: 2; }
  .cms-content h3 { white-space: normal; font-size: 15px; }
  .cms-content p { display: none; }
  .cms-date { order: 1; }
  .cms-read { order: 3; }
}
/* ===== CTA 横幅 ===== */
.cta-banner { position: relative; background: var(--dark); padding: 72px 0; overflow: hidden; }
.cta-banner::before { content: ''; position: absolute; bottom: -80px; left: 50%; transform: translateX(-50%); width: 600px; height: 220px; background: radial-gradient(ellipse at bottom, rgba(242,166,60,0.22) 0%, transparent 70%); }
.cta-cloud { position: absolute; top: 20%; left: 6%; opacity: 0.08; font-size: 120px; color: #fff; transition: transform 0.5s ease; }
.cta-cloud.right { left: auto; right: 8%; top: auto; bottom: 18%; font-size: 80px; transform: rotate(20deg); }
.cta-inner { position: relative; text-align: center; max-width: 700px; margin: 0 auto; }
.cta-inner h2 { font-size: 34px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-inner p { font-size: 16px; color: rgba(255,255,255,0.7); margin-bottom: 30px; }
.cta-inner .btn { height: 50px; padding: 0 36px; font-size: 16px; }
@media (max-width: 640px) {
  .cta-inner h2 { font-size: 26px; }
}
/* ===== 页脚 ===== */
.site-footer { background: var(--dark); padding: 56px 0 24px; position: relative; }
.site-footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.8fr 1fr; gap: 40px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand { display: flex; flex-direction: column; gap: 12px; }
.footer-brand .brand-logo .logo-cloud { background: #3F6B73; }
.footer-brand .brand-logo .logo-cloud::before { background: #3F6B73; }
.footer-brand .brand-logo .logo-cloud::after { background: #3F6B73; }
.footer-brand .brand-text { color: #fff; }
.footer-brand p { font-size: 13px; color: rgba(255,255,255,0.55); line-height: 1.7; max-width: 320px; }
.footer-col h5 { display: flex; align-items: center; gap: 8px; font-size: 15px; color: #fff; margin-bottom: 16px; font-weight: 600; }
.footer-col h5 i { color: var(--accent); font-size: 14px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,0.6); transition: all var(--transition); }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact { display: flex; flex-direction: column; gap: 10px; }
.footer-contact div { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.6); }
.footer-contact i { width: 16px; color: var(--accent); font-size: 13px; }
.footer-bottom { padding-top: 24px; text-align: center; font-size: 13px; color: rgba(255,255,255,0.35); }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}
/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .sidebar { display: none; }
  .main-wrapper { margin-left: 0; }
  .mobile-header { display: flex; }
  .container { padding: 0 20px; }
  .section { padding: 52px 0; }
}
@media (max-width: 640px) {
  .hero h1 { font-size: 30px; }
  .hero-subtitle { font-size: 16px; letter-spacing: 2px; }
  .section-header h2 { font-size: 24px; }
  .btn { height: 40px; padding: 0 20px; font-size: 14px; }
  .testimonial-btn { width: 36px; height: 36px; }
}
/* ===== 功能卡片辅助 ===== */
.feature-card .feature-tag { position: absolute; top: 16px; right: 16px; font-size: 11px; padding: 2px 10px; border-radius: 12px; background: rgba(14,141,138,0.08); color: var(--primary); font-weight: 500; }
/* ===== 水印图片保护提示 ===== */
.hero-visual img, .feature-media img { position: relative; z-index: 1; }

/* roulang page: category1 */
:root {
  --primary: #0E8D8A;
  --primary-dark: #0C7A77;
  --primary-light: rgba(14, 141, 138, 0.08);
  --accent: #F2A63C;
  --accent-dark: #E08C2A;
  --bg: #F7F9F8;
  --dark: #14333C;
  --text: #1E2A33;
  --muted: #6B7A80;
  --border: #E3E8E6;
  --success: #2E9E62;
  --error: #D64541;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 4px 12px rgba(20, 51, 60, 0.06);
  --shadow-md: 0 8px 24px rgba(20, 51, 60, 0.10);
  --container: 1200px;
  --sidebar-w: 240px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; font-size: 14px; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; color: var(--text); transition: border-color var(--transition), box-shadow var(--transition); }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14, 141, 138, 0.15); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
::selection { background: rgba(14, 141, 138, 0.15); }

/* ---------- 左侧 App Shell 导航 ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--sidebar-w);
  background: #fff;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 200;
}
.sidebar-brand { padding: 28px 22px 20px; border-bottom: 1px solid var(--border); }
.brand-logo { display: inline-flex; align-items: center; gap: 12px; }
.logo-mark {
  position: relative;
  width: 46px; height: 46px;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 6px 16px rgba(14, 141, 138, 0.28);
  flex-shrink: 0;
}
.logo-cloud { display: flex; align-items: center; line-height: 1; }
.logo-arrow {
  position: absolute;
  right: -4px; bottom: -4px;
  width: 20px; height: 20px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  border: 2px solid #fff;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 20px; font-weight: 700; color: var(--text); letter-spacing: 1px; }
.brand-sub { font-size: 10px; color: var(--muted); letter-spacing: 1.6px; margin-top: 3px; }

.sidebar-nav { padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}
.nav-item i { width: 20px; text-align: center; font-size: 16px; }
.nav-item:hover { background: var(--primary-light); color: var(--primary); }
.nav-item.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.nav-item.active::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  border-radius: 0 4px 4px 0;
  background: var(--primary);
}

.sidebar-footer { padding: 20px 22px; border-top: 1px solid var(--border); }
.status-row { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(46, 158, 98, 0.15);
}
.version-tag { margin-top: 8px; font-size: 12px; color: #A0ADB2; letter-spacing: 0.4px; }

/* ---------- 移动端顶部栏与抽屉 ---------- */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 150;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
  height: 60px;
  align-items: center;
  justify-content: space-between;
}
.mobile-header .brand-logo { gap: 8px; }
.mobile-header .logo-mark { width: 38px; height: 38px; font-size: 17px; border-radius: 12px; }
.mobile-header .brand-name { font-size: 17px; }
.mobile-header .brand-sub { display: none; }
.mobile-menu-btn {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text);
  background: #fff;
  transition: all var(--transition);
}
.mobile-menu-btn:hover { border-color: var(--primary); color: var(--primary); }

.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(20, 51, 60, 0.5);
  z-index: 199;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}
.drawer-panel {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 280px;
  background: #fff;
  z-index: 201;
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
}
.drawer-brand { padding: 24px 22px 16px; border-bottom: 1px solid var(--border); }
.drawer-panel .sidebar-nav { padding: 16px 14px; }
.drawer-panel .sidebar-footer { padding: 18px 22px; }
body.drawer-open { overflow: hidden; }
body.drawer-open .drawer-mask { opacity: 1; visibility: visible; }
body.drawer-open .drawer-panel { transform: translateX(0); }

/* ---------- 主内容布局 ---------- */
.page-wrapper { margin-left: var(--sidebar-w); flex: 1; min-width: 0; display: flex; flex-direction: column; }
.main-content { flex: 1; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; width: 100%; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 28px;
  height: 48px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 16px rgba(242, 166, 60, 0.32); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(242, 166, 60, 0.38); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { background: #E4C89B; box-shadow: none; cursor: not-allowed; }

.btn-outline { border: 1.5px solid rgba(255, 255, 255, 0.85); color: #fff; background: transparent; }
.btn-outline:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; transform: translateY(-1px); }

.btn-ghost { border: 1.5px solid var(--primary); color: var(--primary); background: #fff; }
.btn-ghost:hover { background: var(--primary-light); transform: translateY(-1px); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: #fff;
  padding: 88px 0;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, rgba(14, 141, 138, 0.9) 0%, rgba(20, 51, 60, 0.84) 100%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 56px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.28);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.4px;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero h1 { font-size: 42px; font-weight: 700; line-height: 1.3; letter-spacing: 0.5px; }
.hero-sub {
  margin-top: 14px;
  font-size: 18px;
  font-weight: 600;
  color: #FFE9BC;
  letter-spacing: 1px;
}
.hero-desc { margin-top: 18px; font-size: 16px; color: rgba(255, 255, 255, 0.88); max-width: 480px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.hero-visual { position: relative; }
.hero-shot {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 44px rgba(20, 51, 60, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: #fff;
}
.hero-shot img { width: 100%; height: 320px; object-fit: cover; }
.hero-float-card {
  position: absolute;
  left: -18px;
  bottom: 24px;
  background: #fff;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  font-size: 14px;
  font-weight: 600;
}
.hero-float-card i { color: var(--success); font-size: 18px; }

/* ---------- 数据信任条 ---------- */
.stats-bar { background: #fff; border-bottom: 1px solid var(--border); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 36px 0;
}
.stat-item { text-align: center; }
.stat-num { font-size: 32px; font-weight: 700; color: var(--primary); line-height: 1.2; }
.stat-num span { font-size: 18px; }
.stat-label { font-size: 14px; color: var(--muted); margin-top: 4px; }

/* ---------- 通用板块 ---------- */
.section { padding: 84px 0; }
.section-white { background: #fff; }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-title { font-size: 30px; font-weight: 700; color: var(--text); line-height: 1.35; }
.section-desc { margin-top: 10px; color: var(--muted); font-size: 15px; }

/* ---------- 核心功能图文 ---------- */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 72px;
}
.feature-block:last-child { margin-bottom: 0; }
.feature-block.reverse .feature-media { order: 2; }
.feature-block.reverse .feature-text { order: 1; }
.feature-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.feature-media img { width: 100%; height: 340px; object-fit: cover; }
.feature-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(20, 51, 60, 0.12));
}
.feature-text h3 { font-size: 22px; font-weight: 700; color: var(--dark); margin-bottom: 14px; }
.feature-text p { color: var(--muted); font-size: 15px; line-height: 1.8; }
.feature-list { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
.feature-list li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text); }
.feature-list i { color: var(--primary); font-size: 16px; }

/* ---------- 适用场景 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.scene-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.scene-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}
.scene-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(14, 141, 138, 0.25); }
.scene-card:hover::before { opacity: 1; }
.scene-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}
.scene-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.scene-card p { font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ---------- 使用流程 ---------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.step-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 22px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
}
.step-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.step-num {
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 6px 14px rgba(14, 141, 138, 0.3);
}
.step-item::after {
  content: "";
  position: absolute;
  top: 53px;
  right: -22px;
  width: 22px;
  height: 2px;
  background: var(--border);
}
.step-item:last-child::after { display: none; }
.step-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.step-item p { font-size: 14px; color: var(--muted); line-height: 1.65; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.faq-item.open { box-shadow: var(--shadow-sm); border-color: rgba(14, 141, 138, 0.35); }
.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: #fff;
  transition: background var(--transition);
}
.faq-toggle:hover { background: var(--primary-light); }
.faq-item.open .faq-toggle { background: var(--primary-light); }
.faq-icon {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  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 0.35s ease; }
.faq-answer-inner { padding: 0 24px 22px; color: var(--muted); font-size: 15px; line-height: 1.8; }

/* ---------- CTA ---------- */
.cta-banner {
  position: relative;
  background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  border-radius: 24px;
  overflow: hidden;
  padding: 60px 56px;
  color: #fff;
  margin: 0 32px 80px;
  box-shadow: var(--shadow-md);
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(20, 51, 60, 0.95) 10%, rgba(14, 141, 138, 0.82) 70%);
}
.cta-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-inner h2 { font-size: 28px; font-weight: 700; line-height: 1.4; }
.cta-inner p { margin-top: 8px; font-size: 15px; color: rgba(255, 255, 255, 0.85); }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--dark);
  color: #C6D3D8;
  border-top: 2px solid var(--accent);
  padding: 64px 0 0;
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .brand-logo { margin-bottom: 16px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: #9DB0B5; max-width: 360px; }
.footer-col h5 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-col h5 i { color: var(--accent); }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: #9DB0B5; transition: color var(--transition), padding-left var(--transition); }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact { display: flex; flex-direction: column; gap: 10px; font-size: 14px; color: #9DB0B5; }
.footer-contact div { display: flex; align-items: center; gap: 10px; }
.footer-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #7E949A;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .container { padding: 0 24px; }
  .cta-banner { margin-left: 24px; margin-right: 24px; }
  .hero h1 { font-size: 36px; }
  .step-item::after { display: none; }
}

@media (max-width: 1024px) {
  .sidebar { width: 220px; }
  .page-wrapper { margin-left: 220px; }
  .hero { padding: 72px 0; }
  .hero h1 { font-size: 32px; }
  .hero-inner { gap: 36px; }
  .hero-shot img { height: 260px; }
  .feature-block { gap: 36px; }
  .feature-media img { height: 280px; }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .step-item::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .sidebar { display: none; }
  .page-wrapper { margin-left: 0; }
  .mobile-header { display: flex; }
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .hero { padding: 56px 0; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 16px; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-visual { order: 2; }
  .hero-shot img { height: 220px; }
  .hero-float-card { left: 12px; bottom: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; padding: 28px 0; }
  .section-title { font-size: 26px; }
  .feature-block { grid-template-columns: 1fr; gap: 28px; }
  .feature-block.reverse .feature-media { order: 0; }
  .feature-block.reverse .feature-text { order: 1; }
  .feature-media img { height: 240px; }
  .scene-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; gap: 16px; }
  .cta-banner { margin: 0 20px 56px; padding: 40px 28px; border-radius: 18px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { padding: 18px 20px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .section { padding: 52px 0; }
  .hero h1 { font-size: 24px; }
  .hero-desc { font-size: 14px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .hero-shot img { height: 180px; }
  .hero-float-card { font-size: 12px; padding: 10px 14px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-num { font-size: 26px; }
  .section-title { font-size: 22px; }
  .feature-media img { height: 200px; }
  .faq-toggle { font-size: 15px; padding: 18px 16px; }
  .faq-answer-inner { padding: 0 16px 18px; font-size: 14px; }
  .cta-banner { margin: 0 16px 44px; padding: 32px 22px; }
  .cta-inner h2 { font-size: 22px; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { gap: 28px; }
}

/* roulang page: article */
:root {
  --primary: #0E8D8A;
  --primary-dark: #0C7A77;
  --primary-rgb: 14, 141, 138;
  --accent: #F2A63C;
  --accent-dark: #E08C2A;
  --bg: #F7F9F8;
  --dark: #14333C;
  --text: #1E2A33;
  --muted: #6B7A80;
  --border: #E3E8E6;
  --success: #2E9E62;
  --error: #D64541;
  --white: #FFFFFF;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 4px 12px rgba(20, 51, 60, 0.06);
  --shadow-md: 0 8px 24px rgba(20, 51, 60, 0.10);
  --transition: 0.2s ease;
  --sidebar-w: 240px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

::selection {
  background: rgba(14, 141, 138, 0.2);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: all 0.2s ease;
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(242, 166, 60, 0.35);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: rgba(14, 141, 138, 0.06);
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border);
}
.btn-ghost:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(14, 141, 138, 0.04);
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ===== Brand Logo ===== */
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.logo-mark {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--primary);
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(14, 141, 138, 0.25);
}
.logo-cloud {
  position: absolute;
  top: 12px;
  left: 8px;
  width: 17px;
  height: 9px;
  background: #fff;
  border-radius: 8px;
}
.logo-cloud::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 3px;
  width: 11px;
  height: 11px;
  background: #fff;
  border-radius: 50%;
}
.logo-arrow {
  position: absolute;
  right: 7px;
  bottom: 7px;
  width: 7px;
  height: 7px;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  transform: rotate(45deg);
}
.brand-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: 1px;
}
.brand-tagline {
  display: block;
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--muted);
  margin-top: 8px;
  padding-left: 48px;
  text-transform: uppercase;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--white);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
}
.sidebar-brand {
  padding: 28px 24px 20px;
  border-bottom: 1px solid #F0F3F2;
}
.sidebar-nav {
  flex: 1;
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow-y: auto;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 10px;
  border-left: 4px solid transparent;
  transition: all 0.2s ease;
}
.nav-item i {
  width: 18px;
  text-align: center;
  color: var(--muted);
  transition: color 0.2s ease;
}
.nav-item:hover {
  background: rgba(14, 141, 138, 0.05);
  color: var(--primary);
}
.nav-item:hover i {
  color: var(--primary);
}
.nav-item.active {
  background: rgba(14, 141, 138, 0.10);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
}
.nav-item.active i {
  color: var(--primary);
}
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid #F0F3F2;
}
.sidebar-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(46, 158, 98, 0.18);
  flex-shrink: 0;
}
.version {
  margin-left: auto;
  font-size: 12px;
  color: #A0ADB2;
}

/* ===== Main Layout ===== */
.main-area {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.main-content {
  flex: 1;
}

/* ===== Mobile Topbar ===== */
.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.96);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  align-items: center;
  justify-content: space-between;
}
.mobile-topbar .brand-text {
  font-size: 18px;
}
.mobile-topbar .logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
}
.mobile-topbar .logo-cloud {
  top: 10px;
  left: 6px;
  width: 14px;
  height: 8px;
}
.mobile-topbar .logo-cloud::before {
  top: -4px;
  left: 2px;
  width: 9px;
  height: 9px;
}
.mobile-topbar .logo-arrow {
  right: 6px;
  bottom: 6px;
  width: 6px;
  height: 6px;
}
.menu-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--white);
  font-size: 17px;
  color: var(--dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.menu-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.menu-toggle:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ===== Drawer ===== */
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 51, 60, 0.5);
  z-index: 199;
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}
.drawer-overlay.show {
  opacity: 1;
  pointer-events: auto;
}
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100vh;
  background: var(--white);
  z-index: 200;
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  flex-direction: column;
  display: none;
}
.mobile-drawer.open {
  transform: translateX(0);
}
.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.drawer-header .brand-text {
  font-size: 18px;
}
.drawer-close {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-size: 16px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.drawer-close:hover {
  color: var(--error);
  border-color: var(--error);
}
.drawer-nav {
  flex: 1;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}
.drawer-status {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 28px 0 8px;
  font-size: 14px;
  color: var(--muted);
}
.breadcrumb a {
  color: var(--muted);
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb-sep {
  color: #C4CECB;
}
.breadcrumb-current {
  color: var(--text);
  font-weight: 500;
  max-width: 420px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.breadcrumb-cat a {
  color: var(--primary);
}
.breadcrumb-cat a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== Article Page ===== */
.article-page {
  max-width: 860px;
  margin: 0 auto;
  padding: 16px 0 72px;
}
.article-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 40px 48px;
}
.article-head {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.article-head h1 {
  font-size: 32px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  letter-spacing: 0.2px;
  word-break: break-word;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--muted);
}
.article-meta i {
  margin-right: 5px;
  color: var(--primary);
}
.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
}
.cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(14, 141, 138, 0.10);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
}

/* ===== Article Content ===== */
.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  word-break: break-word;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--dark);
  margin: 32px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.5;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--dark);
  margin: 28px 0 12px;
  line-height: 1.5;
}
.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  margin: 24px 0 10px;
}
.article-content p {
  margin: 0 0 16px;
}
.article-content img {
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--border);
  height: auto;
  margin: 20px 0;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover {
  color: var(--primary-dark);
}
.article-content ul {
  list-style: none;
  padding-left: 0;
  margin: 0 0 16px;
}
.article-content ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
}
.article-content ul li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
}
.article-content ol {
  margin: 0 0 16px;
  padding-left: 22px;
}
.article-content ol li {
  margin-bottom: 8px;
}
.article-content blockquote {
  margin: 20px 0;
  padding: 16px 20px;
  background: rgba(14, 141, 138, 0.06);
  border-left: 4px solid var(--primary);
  border-radius: 0 10px 10px 0;
  color: var(--muted);
  font-size: 15px;
}
.article-content blockquote p {
  margin-bottom: 0;
}
.article-content pre {
  background: var(--dark);
  color: #E8F0EE;
  border-radius: 10px;
  padding: 16px 20px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 20px 0;
}
.article-content code {
  background: rgba(14, 141, 138, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
.article-content pre code {
  background: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content th {
  background: rgba(14, 141, 138, 0.06);
  font-weight: 600;
}
.article-content figure {
  margin: 20px 0;
}
.article-content figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
}
.article-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 28px 0;
}

/* ===== Related Section ===== */
.related-section {
  margin-top: 48px;
}
.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-title::before {
  content: '';
  width: 4px;
  height: 22px;
  background: var(--primary);
  border-radius: 2px;
  flex-shrink: 0;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.related-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  display: block;
}
.related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: rgba(14, 141, 138, 0.35);
}
.related-card:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.related-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card:hover h3 {
  color: var(--primary);
}
.related-date {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ===== Article Actions ===== */
.article-actions {
  margin-top: 40px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Article CTA ===== */
.article-cta {
  margin-top: 48px;
  background: linear-gradient(135deg, var(--dark) 0%, #1A4A54 100%);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #fff;
  position: relative;
  overflow: hidden;
  flex-wrap: wrap;
}
.article-cta::after {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(242, 166, 60, 0.22), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.article-cta h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.4;
}
.article-cta p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}
.article-cta .btn {
  position: relative;
  z-index: 1;
}

/* ===== Not Found ===== */
.not-found {
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 72px 32px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.not-found i {
  font-size: 48px;
  color: #C4CECB;
  margin-bottom: 20px;
}
.not-found h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.not-found p {
  color: var(--muted);
  margin-bottom: 24px;
  font-size: 15px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  border-top: 2px solid var(--primary);
  padding: 56px 0 0;
  color: rgba(255, 255, 255, 0.75);
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .brand-text {
  color: #fff;
}
.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  max-width: 360px;
}
.footer-col h5 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-col h5 i {
  color: var(--accent);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
}
.footer-contact div {
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact i {
  color: var(--accent);
  width: 16px;
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .sidebar {
    display: none;
  }
  .main-area {
    margin-left: 0;
  }
  .mobile-topbar {
    display: flex;
  }
  .mobile-drawer {
    display: flex;
  }
  .drawer-overlay {
    display: block;
  }
  .article-head h1 {
    font-size: 28px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  .article-page {
    padding: 12px 0 48px;
  }
  .article-box {
    padding: 24px 20px;
    border-radius: 12px;
  }
  .article-head h1 {
    font-size: 24px;
  }
  .article-meta {
    gap: 10px;
    font-size: 13px;
  }
  .article-content {
    font-size: 15px;
  }
  .article-content h2 {
    font-size: 21px;
  }
  .article-content h3 {
    font-size: 18px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .article-actions {
    flex-direction: column;
  }
  .article-actions .btn {
    width: 100%;
  }
  .article-cta {
    padding: 28px 24px;
    flex-direction: column;
    align-items: flex-start;
  }
  .article-cta .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .breadcrumb {
    padding-top: 18px;
    font-size: 13px;
  }
  .breadcrumb-current {
    max-width: 200px;
  }
}

@media (max-width: 520px) {
  .article-head h1 {
    font-size: 22px;
  }
  .article-content {
    font-size: 15px;
    line-height: 1.75;
  }
  .article-content h2 {
    font-size: 20px;
    padding-left: 12px;
  }
  .article-content h3 {
    font-size: 17px;
  }
  .article-content blockquote {
    padding: 14px 16px;
  }
  .article-cta h2 {
    font-size: 20px;
  }
}

/* roulang page: category2 */
:root{
  --primary:#0E8D8A;
  --primary-dark:#0C7A77;
  --primary-light:rgba(14,141,138,.10);
  --accent:#F2A63C;
  --accent-dark:#E08C2A;
  --accent-light:rgba(242,166,60,.16);
  --bg:#F7F9F8;
  --ink:#1E2A33;
  --ink-light:#6B7A80;
  --border:#E3E8E6;
  --deep:#14333C;
  --white:#FFFFFF;
  --success:#2E9E62;
  --error:#D64541;
  --radius-lg:16px;
  --radius-md:10px;
  --radius-sm:6px;
  --shadow:0 4px 12px rgba(20,51,60,.06);
  --shadow-lg:0 8px 24px rgba(20,51,60,.10);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  --sidebar-w:240px;
  --topbar-h:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .2s}}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.main-area{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}

/* ========== Sidebar ========== */
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--white);border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:100;
}
.sidebar-inner{display:flex;flex-direction:column;height:100%;padding:28px 20px 20px}
.brand-logo{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--ink);font-size:22px;font-weight:700;letter-spacing:.5px;
}
.brand-logo:hover{color:var(--primary)}
.logo-mark{
  position:relative;width:38px;height:38px;flex-shrink:0;
  background:var(--primary);border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(14,141,138,.28);
}
.logo-cloud{
  position:absolute;top:9px;left:8px;width:13px;height:8px;
  background:rgba(255,255,255,.95);
  border-radius:10px;
}
.logo-cloud::after{
  content:"";position:absolute;top:-4px;left:3px;width:9px;height:9px;
  background:rgba(255,255,255,.95);border-radius:50%;
}
.logo-arrow{
  position:absolute;bottom:8px;right:8px;width:11px;height:11px;
  border-top:2.4px solid var(--white);border-right:2.4px solid var(--white);
  transform:rotate(45deg);border-radius:1px;
}
.brand-sub{
  display:block;margin:6px 0 26px 48px;
  font-size:11px;letter-spacing:1.4px;color:var(--ink-light);
}
.sidebar-nav{display:flex;flex-direction:column;gap:6px}
.sidebar-nav .nav-item{
  display:flex;align-items:center;gap:12px;
  padding:11px 14px;border-radius:var(--radius-md);
  color:var(--ink);font-size:15px;font-weight:500;
  border-left:4px solid transparent;
  transition:background .2s,color .2s,border-color .2s;
}
.sidebar-nav .nav-item i{width:20px;text-align:center;font-size:15px;color:var(--ink-light)}
.sidebar-nav .nav-item:hover{background:var(--primary-light);color:var(--primary)}
.sidebar-nav .nav-item:hover i{color:var(--primary)}
.sidebar-nav .nav-item.active{
  background:var(--primary-light);
  color:var(--primary);
  border-left-color:var(--primary);
  font-weight:600;
}
.sidebar-nav .nav-item.active i{color:var(--primary)}
.sidebar-status{
  margin-top:auto;padding:14px 12px;
  background:#F2F6F5;border-radius:var(--radius-md);
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--ink);
}
.status-dot{
  width:8px;height:8px;background:var(--success);
  border-radius:50%;box-shadow:0 0 0 3px rgba(46,158,98,.18);
  animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px rgba(46,158,98,.18)}50%{box-shadow:0 0 0 5px rgba(46,158,98,.10)}}
.status-ver{margin-left:auto;font-size:11px;color:var(--ink-light)}

/* ========== Mobile Topbar & Drawer ========== */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--topbar-h);
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);align-items:center;
  padding:0 20px;z-index:200;
}
.menu-toggle{
  margin-left:auto;width:42px;height:42px;border-radius:var(--radius-md);
  display:flex;align-items:center;justify-content:center;
  font-size:19px;color:var(--ink);transition:background .2s,color .2s;
}
.menu-toggle:hover{background:var(--primary-light);color:var(--primary)}
.drawer-overlay{
  display:none;position:fixed;inset:0;background:rgba(20,51,60,.5);
  z-index:210;opacity:0;transition:opacity .3s;
}
.drawer-overlay.show{display:block;opacity:1}
.mobile-drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;
  background:var(--white);z-index:220;padding:28px 20px;
  display:flex;flex-direction:column;
  transform:translateX(-100%);transition:transform .3s ease;
  box-shadow:4px 0 20px rgba(20,51,60,.12);
}
.mobile-drawer.show{transform:translateX(0)}
.mobile-drawer .drawer-close{
  position:absolute;top:14px;right:14px;width:38px;height:38px;
  border-radius:10px;font-size:17px;color:var(--ink-light);
  display:flex;align-items:center;justify-content:center;
}
.mobile-drawer .drawer-close:hover{background:var(--bg);color:var(--error)}
.drawer-nav{margin-top:30px;display:flex;flex-direction:column;gap:4px}
.drawer-nav .nav-item{
  display:flex;align-items:center;gap:12px;
  padding:13px 14px;border-radius:var(--radius-md);
  color:var(--ink);font-size:15px;font-weight:500;
  border-left:4px solid transparent;
}
.drawer-nav .nav-item i{width:20px;color:var(--ink-light)}
.drawer-nav .nav-item:hover{background:var(--primary-light);color:var(--primary)}
.drawer-nav .nav-item.active{background:var(--primary-light);color:var(--primary);border-left-color:var(--primary)}
.drawer-status{
  margin-top:auto;padding:14px;background:#F2F6F5;border-radius:var(--radius-md);
  font-size:13px;color:var(--ink);display:flex;align-items:center;gap:8px;
}
.drawer-status .status-ver{margin-left:auto}

/* ========== Buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--radius-md);
  font-size:15px;font-weight:600;letter-spacing:.3px;
  transition:all .2s;outline:none;
}
.btn-primary{background:var(--accent);color:var(--white);box-shadow:0 4px 14px rgba(242,166,60,.30)}
.btn-primary:hover{background:var(--accent-dark);color:var(--white);transform:translateY(-1px);box-shadow:0 6px 18px rgba(242,166,60,.35)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:focus-visible{box-shadow:0 0 0 3px rgba(242,166,60,.30)}
.btn-outline{background:var(--white);color:var(--primary);border:1.6px solid var(--primary)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-outline:focus-visible{box-shadow:0 0 0 3px rgba(14,141,138,.22)}
.btn-link{height:auto;padding:4px 2px;color:var(--primary);font-weight:500;font-size:15px}
.btn-link:hover{text-decoration:underline;background:none}
.btn-light{background:var(--white);color:var(--deep);box-shadow:var(--shadow)}
.btn-light:hover{background:var(--bg);color:var(--primary);transform:translateY(-1px)}

/* ========== Page Hero ========== */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(14,141,138,.92),rgba(20,51,60,.88)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:84px 0 72px;
}
.page-hero .container{
  display:flex;align-items:center;gap:56px;
}
.hero-copy{flex:1.25;max-width:640px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);color:var(--white);
  border:1px solid rgba(255,255,255,.22);
  padding:6px 16px;border-radius:100px;font-size:13px;
  margin-bottom:22px;letter-spacing:.4px;
}
.hero-badge i{color:var(--accent);font-size:14px}
.page-hero h1{
  color:var(--white);font-size:41px;line-height:1.3;
  font-weight:700;letter-spacing:.5px;
}
.page-hero h1 .accent-underline{
  background:linear-gradient(120deg,var(--accent) 0%,var(--accent) 100%);
  background-position:0 88%;background-size:100% 8px;background-repeat:no-repeat;
  padding:0 2px;
}
.hero-sub{
  color:rgba(255,255,255,.92);font-size:18px;line-height:1.85;
  margin:20px 0 32px;max-width:540px;
}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-visual{flex:0.75;min-width:260px}
.hero-visual .hero-card{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
  border-radius:20px;padding:20px;backdrop-filter:blur(6px);
  box-shadow:0 12px 32px rgba(20,51,60,.2);
}
.hero-visual img{border-radius:12px;width:100%;height:auto;object-fit:cover}
.hero-visual .hero-card-note{
  color:rgba(255,255,255,.88);font-size:13px;
  margin-top:14px;display:flex;align-items:center;gap:10px;
}
.hero-visual .hero-card-note i{color:var(--accent)}

/* ========== Sections Base ========== */
.section{padding:70px 0}
.section-tight{padding:40px 0}
.section-head{margin-bottom:42px;max-width:680px}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary);font-size:13px;font-weight:600;
  letter-spacing:.6px;margin-bottom:12px;
}
.section-eyebrow::before{content:"";width:24px;height:2px;background:var(--accent);border-radius:2px}
.section-title{font-size:31px;font-weight:700;line-height:1.4;color:var(--ink);letter-spacing:.2px}
.section-desc{margin-top:14px;color:var(--ink-light);font-size:16px;line-height:1.8}

/* ========== Quick Tags ========== */
.quick-tags{
  display:flex;gap:12px;flex-wrap:wrap;
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:22px 26px;
  box-shadow:var(--shadow);margin-top:-38px;position:relative;z-index:5;
}
.quick-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 18px;border-radius:100px;
  background:var(--bg);border:1px solid var(--border);
  color:var(--ink);font-size:14px;font-weight:500;
  transition:all .2s;
}
.quick-tag i{color:var(--primary);font-size:13px}
.quick-tag:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}

/* ========== FAQ Accordion ========== */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);transition:box-shadow .25s,border-color .25s;
}
.faq-item.active{border-color:rgba(14,141,138,.45);box-shadow:var(--shadow-lg)}
.faq-question{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:20px 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:background .2s;
}
.faq-question:hover{background:var(--primary-light)}
.faq-icon{
  margin-left:auto;flex-shrink:0;width:32px;height:32px;
  border-radius:50%;background:var(--bg);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--primary);
  transition:transform .25s,background .25s,color .25s;
}
.faq-item.active .faq-icon{
  transform:rotate(45deg);background:var(--primary);color:var(--white);border-color:var(--primary);
}
.faq-answer{
  max-height:0;overflow:hidden;
  transition:max-height .35s ease,padding .3s ease;
}
.faq-item.active .faq-answer{max-height:360px}
.faq-answer-inner{
  padding:0 24px 22px;color:var(--ink-light);font-size:15px;line-height:1.85;
}
.faq-answer-inner p{margin-bottom:10px}
.faq-answer-inner p:last-child{margin-bottom:0}
.faq-answer-inner a{font-weight:500;text-decoration:underline;text-underline-offset:3px}
.faq-answer-inner .faq-tip{
  background:var(--primary-light);border-left:3px solid var(--primary);
  padding:12px 16px;border-radius:0 var(--radius-md) var(--radius-md) 0;
  margin-top:12px;font-size:14px;color:var(--ink);
}

/* ========== Safety Cards ========== */
.safety-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.safety-card{
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:30px 26px;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;
  position:relative;overflow:hidden;
}
.safety-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.safety-card::after{
  content:"";position:absolute;top:-32px;right:-32px;width:70px;height:70px;
  border-radius:50%;background:var(--primary-light);opacity:.7;
}
.safety-icon{
  width:52px;height:52px;border-radius:14px;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:21px;margin-bottom:18px;position:relative;z-index:1;
}
.safety-card h3{font-size:18px;font-weight:600;margin-bottom:10px;color:var(--ink)}
.safety-card p{font-size:14px;line-height:1.75;color:var(--ink-light);margin:0}

/* ========== Process Steps ========== */
.steps-section{position:relative}
.steps-bg{
  position:absolute;inset:0;z-index:0;
  background:url('/assets/images/backpic/back-2.png') center/cover fixed no-repeat;
  opacity:.08;
}
.steps-section .container{position:relative;z-index:1}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.step-item{
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:30px;
  text-align:left;box-shadow:var(--shadow);
  position:relative;transition:transform .25s,box-shadow .25s;
}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.step-num{
  font-size:34px;font-weight:700;color:transparent;
  -webkit-text-stroke:1.6px var(--primary);
  line-height:1;margin-bottom:16px;display:block;
}
.step-item h3{font-size:17px;font-weight:600;margin-bottom:8px;color:var(--ink)}
.step-item p{font-size:14px;line-height:1.75;color:var(--ink-light);margin:0}
.step-connector{
  position:absolute;top:50%;right:-20px;width:14px;height:14px;
  border-top:2px solid var(--accent);border-right:2px solid var(--accent);
  transform:rotate(45deg) translateY(-50%);background:var(--bg);
}

/* ========== Promise Strip ========== */
.promise-strip{
  background:var(--deep);border-radius:var(--radius-lg);
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:0;overflow:hidden;box-shadow:var(--shadow-lg);
}
.promise-item{
  padding:28px 24px;text-align:center;position:relative;
  transition:background .2s;
}
.promise-item:hover{background:rgba(255,255,255,.04)}
.promise-item + .promise-item::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:1px;
  background:rgba(255,255,255,.1);
}
.promise-item i{
  font-size:23px;color:var(--accent);margin-bottom:10px;display:block;
}
.promise-item h4{color:var(--white);font-size:16px;font-weight:600;margin-bottom:4px}
.promise-item span{color:rgba(255,255,255,.6);font-size:13px}

/* ========== Contact CTA ========== */
.cta-contact{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-dark) 60%,var(--deep) 100%);
  padding:52px 56px;display:flex;align-items:center;gap:40px;
  box-shadow:0 12px 32px rgba(14,141,138,.28);
}
.cta-contact::before{
  content:"";position:absolute;right:-50px;top:-50px;width:200px;height:200px;
  border-radius:50%;background:rgba(255,255,255,.07);
}
.cta-contact::after{
  content:"";position:absolute;right:60px;bottom:-70px;width:150px;height:150px;
  border-radius:50%;background:rgba(242,166,60,.22);
}
.cta-contact .cta-copy{position:relative;z-index:1;flex:1}
.cta-contact h3{color:var(--white);font-size:27px;font-weight:700;line-height:1.4;margin-bottom:8px}
.cta-contact p{color:rgba(255,255,255,.88);font-size:15px;max-width:600px}
.cta-contact .btn{position:relative;z-index:1;flex-shrink:0}

/* ========== Footer ========== */
.site-footer{
  background:var(--deep);color:rgba(255,255,255,.7);
  border-top:2px solid var(--primary);margin-top:auto;
}
.site-footer .container{padding-top:52px;padding-bottom:28px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:44px;
  margin-bottom:36px;
}
.footer-brand .brand-logo{color:var(--white);margin-bottom:14px}
.footer-brand .brand-logo:hover{color:var(--primary)}
.footer-brand .logo-mark{background:var(--primary)}
.footer-brand p{
  font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);max-width:340px;
}
.footer-col h5{
  color:var(--white);font-size:15px;font-weight:600;
  margin-bottom:16px;letter-spacing:.4px;
}
.footer-col h5 i{color:var(--accent);margin-right:6px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  color:rgba(255,255,255,.65);font-size:14px;transition:color .2s,padding-left .2s;
}
.footer-links a:hover{color:var(--accent);padding-left:4px}
.footer-contact{display:flex;flex-direction:column;gap:10px}
.footer-contact div{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.65)}
.footer-contact i{width:18px;text-align:center;color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:20px;text-align:center;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ========== Responsive ========== */
@media (max-width:1023px){
  .sidebar{display:none}
  .mobile-topbar{display:flex}
  .main-area{margin-left:0}
  .page-hero{padding:110px 0 60px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .page-hero{padding:100px 0 52px}
  .page-hero h1{font-size:32px}
  .page-hero .container{flex-direction:column;gap:32px}
  .hero-visual{min-width:0;width:100%}
  .section{padding:56px 0}
  .section-title{font-size:26px;line-height:1.4}
  .safety-grid{grid-template-columns:1fr 1fr}
  .steps-grid{grid-template-columns:1fr;gap:16px}
  .step-connector{display:none}
  .promise-strip{grid-template-columns:1fr 1fr}
  .promise-item + .promise-item::before{display:none}
  .cta-contact{flex-direction:column;align-items:flex-start;padding:36px 28px;gap:22px}
  .cta-contact h3{font-size:23px}
  .quick-tags{justify-content:center;padding:18px}
  .faq-question{padding:17px 18px;font-size:15px}
  .faq-answer-inner{padding:0 18px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .page-hero h1{font-size:27px}
  .hero-sub{font-size:16px}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .safety-grid{grid-template-columns:1fr}
  .promise-strip{grid-template-columns:1fr}
  .promise-item{padding:22px 18px}
  .section-title{font-size:24px}
  .footer-bottom{font-size:12px}
}

/* roulang page: category3 */
:root {
  --color-primary: #0E8D8A;
  --color-primary-hover: #0C7A77;
  --color-primary-light: rgba(14, 141, 138, 0.08);
  --color-primary-light-2: rgba(14, 141, 138, 0.05);
  --color-accent: #F2A63C;
  --color-accent-hover: #E08C2A;
  --color-accent-light: rgba(242, 166, 60, 0.12);
  --color-bg: #F7F9F8;
  --color-bg-white: #FFFFFF;
  --color-dark: #14333C;
  --color-dark-light: #1E4A52;
  --color-text: #1E2A33;
  --color-text-secondary: #6B7A80;
  --color-border: #E3E8E6;
  --color-success: #2E9E62;
  --color-error: #D64541;
  --color-mute: #9AA6A3;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow-card: 0 4px 12px rgba(20, 51, 60, 0.06);
  --shadow-card-hover: 0 8px 24px rgba(20, 51, 60, 0.10);
  --shadow-pop: 0 12px 32px rgba(20, 51, 60, 0.14);
  --transition: 0.2s ease;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --line-height: 1.8;
  --sidebar-width: 240px;
  --content-max: 1200px;
  --space-section: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius-md);
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ===== 左侧导航 ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-bg-white);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1000;
  padding: 28px 20px 20px;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.sidebar-brand {
  padding-bottom: 26px;
  border-bottom: 1px solid var(--color-border);
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  position: relative;
  width: 36px;
  height: 36px;
  background: var(--color-dark);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-cloud {
  position: absolute;
  top: 11px;
  left: 9px;
  width: 18px;
  height: 10px;
  border-radius: 10px;
  background: var(--color-accent);
}

.logo-cloud::after {
  content: "";
  position: absolute;
  top: -5px;
  left: 4px;
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  border-radius: 50%;
}

.logo-arrow {
  position: absolute;
  bottom: 9px;
  left: 14px;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--color-bg-white);
  border-bottom: 2px solid var(--color-bg-white);
  transform: rotate(45deg);
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-dark);
  letter-spacing: 1px;
}

.brand-sub {
  display: block;
  font-size: 11px;
  color: var(--color-mute);
  letter-spacing: 1.2px;
  margin-top: 8px;
  padding-left: 46px;
  font-weight: 500;
}

.sidebar-nav {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  transition: background var(--transition), color var(--transition);
}

.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 16px;
  color: var(--color-mute);
  transition: color var(--transition);
}

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

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

.nav-item.active {
  background: rgba(14, 141, 138, 0.10);
  color: var(--color-primary);
  font-weight: 600;
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-primary);
  border-radius: 0 4px 4px 0;
}

.nav-item.active i {
  color: var(--color-primary);
}

.sidebar-bottom {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.service-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 8px 0;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  display: inline-block;
  position: relative;
}

.status-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: rgba(46, 158, 98, 0.2);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(1.6); opacity: 0; }
}

.version-tag {
  font-size: 12px;
  color: var(--color-mute);
  margin-top: 4px;
}

/* ===== 主内容区域 ===== */
.main-area {
  flex: 1;
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
}

/* ===== 移动端顶部栏 ===== */
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1100;
  background: var(--color-bg-white);
  padding: 14px 20px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 8px rgba(20, 51, 60, 0.05);
}

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

.mobile-brand .logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
}

.mobile-brand .logo-cloud {
  top: 9px;
  left: 8px;
  width: 16px;
  height: 9px;
}

.mobile-brand .logo-cloud::after {
  top: -4px;
  left: 3px;
  width: 9px;
  height: 9px;
}

.mobile-brand .logo-arrow {
  bottom: 8px;
  left: 13px;
  width: 7px;
  height: 7px;
}

.mobile-brand .brand-text {
  font-size: 18px;
}

.burger-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  font-size: 18px;
  color: var(--color-dark);
  transition: background var(--transition);
}

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

.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 51, 60, 0.45);
  opacity: 0;
  z-index: 1050;
  transition: opacity 0.25s;
}

.drawer-overlay.show {
  opacity: 1;
}

.drawer-overlay.d-block {
  display: block;
}

/* ===== 容器 ===== */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left: 28px;
  padding-right: 28px;
  position: relative;
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, rgba(14, 141, 138, 0.92), rgba(20, 51, 60, 0.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 88px 0 76px;
  color: var(--color-bg-white);
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: 30px;
  width: 300px;
  height: 300px;
  background: rgba(242, 166, 60, 0.15);
  border-radius: 50%;
  filter: blur(10px);
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 2;
}

.hero-text {
  flex: 1.2;
}

.hero-tagline {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.28);
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}

.hero-text h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 18px;
  letter-spacing: 1px;
  color: var(--color-bg-white);
}

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

.hero-desc {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
  max-width: 560px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  height: 46px;
  letter-spacing: 0.5px;
  border: 1.5px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg-white);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(242, 166, 60, 0.3);
  color: var(--color-bg-white);
}

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

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: var(--color-bg-white);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-bg-white);
  color: var(--color-bg-white);
  transform: translateY(-1px);
}

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

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

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

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

.btn-ghost:hover {
  background: var(--color-primary-light);
  text-decoration: underline;
}

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

.btn-dark {
  background: var(--color-dark);
  color: var(--color-bg-white);
  border-color: var(--color-dark);
}

.btn-dark:hover {
  background: var(--color-dark-light);
  color: var(--color-bg-white);
  transform: translateY(-1px);
}

.hero-visual {
  flex: 1;
  min-height: 380px;
}

.hero-visual .visual-card {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 20px;
  padding: 28px;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}

.hero-visual .visual-card img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  object-fit: cover;
}

.hero-visual .visual-card::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(242, 166, 60, 0.14);
  transform: translate(-50%, -50%);
  filter: blur(60px);
  z-index: 0;
}

.hero-visual .visual-card > * {
  position: relative;
  z-index: 1;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 22px 0 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.breadcrumb a {
  color: var(--color-text-secondary);
}

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

.breadcrumb .sep {
  margin: 0 8px;
  color: var(--color-mute);
}

.breadcrumb .current {
  color: var(--color-primary);
  font-weight: 500;
}

/* ===== 板块 ===== */
.section {
  padding: var(--space-section) 0;
}

.section-bg {
  background: var(--color-bg-white);
}

.section-header {
  margin-bottom: 42px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 6px 12px;
  border-radius: 30px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.section-header h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.35;
  letter-spacing: 0.5px;
}

.section-header p {
  font-size: 15px;
  color: var(--color-text-secondary);
  max-width: 660px;
  margin-top: 10px;
  line-height: 1.75;
}

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

.text-center .section-header p {
  margin-left: auto;
  margin-right: auto;
}

/* ===== 保障条款 ===== */
.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.guarantee-card {
  display: flex;
  gap: 20px;
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 30px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s;
}

.guarantee-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(14, 141, 138, 0.35);
}

.guarantee-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 24px;
  color: var(--color-primary);
}

.guarantee-card:nth-child(even) .guarantee-icon {
  background: var(--color-accent-light);
  color: var(--color-accent-hover);
}

.guarantee-body {
  flex: 1;
}

.guarantee-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.guarantee-body h3 .badge {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 20px;
  font-weight: 600;
}

.guarantee-body p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

/* ===== 官方声明 ===== */
.official-note {
  margin-top: 48px;
  background: var(--color-dark);
  border-radius: var(--radius-lg);
  color: rgba(255, 255, 255, 0.85);
  padding: 36px 40px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 28px;
}

.official-note::before {
  content: "";
  position: absolute;
  right: 60px;
  bottom: -60px;
  width: 200px;
  height: 200px;
  background: rgba(14, 141, 138, 0.28);
  border-radius: 50%;
  filter: blur(40px);
}

.official-note-icon {
  width: 62px;
  height: 62px;
  background: rgba(242, 166, 60, 0.2);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--color-accent);
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.official-note-body {
  flex: 1;
  position: relative;
  z-index: 2;
}

.official-note-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-bg-white);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.official-note-body p {
  font-size: 14px;
  line-height: 1.8;
  opacity: 0.85;
}

/* ===== 适用场景 ===== */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.scenario-image {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  height: 400px;
}

.scenario-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
}

.scenario-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, transparent 45%, rgba(20, 51, 60, 0.55));
  border-radius: 20px;
}

.scenario-text h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-dark);
}

.scenario-list {
  margin-bottom: 28px;
}

.scenario-list li {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text);
}

.scenario-list li i {
  color: var(--color-primary);
  margin-top: 4px;
  flex-shrink: 0;
}

/* ===== 流程步骤 ===== */
.steps-section {
  background: var(--color-dark);
  color: var(--color-bg-white);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}

.steps-section::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: rgba(14, 141, 138, 0.2);
  border-radius: 50%;
}

.steps-section .section-header h2 {
  color: var(--color-bg-white);
}

.steps-section .section-header p {
  color: rgba(255, 255, 255, 0.75);
}

.steps-section .section-tag {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-accent);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
  z-index: 2;
}

.step-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  position: relative;
  transition: background var(--transition), transform var(--transition);
}

.step-card:hover {
  background: rgba(255, 255, 255, 0.09);
  transform: translateY(-3px);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(242, 166, 60, 0.2);
  color: var(--color-accent);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 18px;
  border: 1px dashed rgba(242, 166, 60, 0.4);
}

.step-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
  color: var(--color-bg-white);
}

.step-card p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item.active {
  border-color: rgba(14, 141, 138, 0.4);
  box-shadow: var(--shadow-card);
}

.faq-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 24px;
  background: transparent;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-dark);
  text-align: left;
  transition: background var(--transition);
}

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

.faq-header .faq-q {
  display: flex;
  align-items: center;
  gap: 12px;
}

.faq-header .faq-q i {
  color: var(--color-primary);
  width: 22px;
  text-align: center;
}

.faq-toggle {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 15px;
  transition: transform 0.2s ease, background var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: var(--color-bg-white);
}

.faq-answer {
  display: none;
  padding: 0 24px 24px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  background: var(--color-primary-light-2);
}

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

.faq-answer .highlight {
  color: var(--color-primary);
  font-weight: 500;
}

/* FAQ 底部的 CTA 条 */
.faq-cta {
  text-align: center;
  padding: 40px 24px;
  border: 1px dashed var(--color-primary);
  border-radius: var(--radius-lg);
  margin-top: 40px;
  background: var(--color-primary-light-2);
}

.faq-cta h3 {
  font-size: 20px;
  color: var(--color-dark);
  margin-bottom: 8px;
}

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

/* ===== CTA 横幅 ===== */
.cta-banner {
  background: linear-gradient(140deg, var(--color-primary), var(--color-dark));
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  color: var(--color-bg-white);
  box-shadow: var(--shadow-pop);
}

.cta-banner::before {
  content: "";
  position: absolute;
  right: -50px;
  top: -50px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(242, 166, 60, 0.2);
  filter: blur(20px);
}

.cta-banner::after {
  content: "";
  position: absolute;
  left: 20%;
  bottom: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.cta-text {
  position: relative;
  z-index: 2;
  flex: 1;
}

.cta-text h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
}

.cta-text p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  max-width: 520px;
}

.cta-actions {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-shrink: 0;
}

.cta-actions .btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg-white);
  font-size: 16px;
  padding: 14px 32px;
}

.cta-actions .btn-primary:hover {
  background: var(--color-accent-hover);
}

.cta-actions .btn-outline {
  border-color: rgba(255, 255, 255, 0.5);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.8);
  margin-left: var(--sidebar-width);
  position: relative;
  padding: 60px 0 0;
  border-top: 3px solid var(--color-accent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand .brand-logo {
  margin-bottom: 16px;
}

.footer-brand .logo-mark {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-brand .logo-cloud {
  background: var(--color-accent);
}

.footer-brand .logo-cloud::after {
  background: var(--color-accent);
}

.footer-brand .brand-text {
  color: var(--color-bg-white);
  font-size: 22px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
  max-width: 380px;
}

.footer-col h5 {
  font-size: 16px;
  color: var(--color-bg-white);
  font-weight: 600;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-col h5 i {
  color: var(--color-accent);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  transition: color var(--transition), padding-left var(--transition);
}

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

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14px;
}

.footer-contact div {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.65);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
  letter-spacing: 0.5px;
}

/* ===== 响应式 ===== */
@media (min-width: 1024px) and (max-width: 1280px) {
  :root {
    --sidebar-width: 220px;
  }
  .hero-text h1 {
    font-size: 34px;
  }
}

@media (max-width: 1023px) {
  .sidebar {
    transform: translateX(-100%);
    box-shadow: 8px 0 30px rgba(20, 51, 60, 0.12);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-area {
    margin-left: 0;
    width: 100%;
  }

  .mobile-topbar {
    display: flex;
  }

  .site-footer {
    margin-left: 0;
  }

  .mobile-topbar + .main-area {
    padding-top: 70px;
  }

  .page-hero {
    padding: 72px 0 56px;
  }

  .hero-inner {
    flex-direction: column;
    gap: 36px;
  }

  .hero-visual {
    min-height: 280px;
  }

  .hero-visual .visual-card {
    min-height: 260px;
  }

  .cta-banner {
    flex-direction: column;
    padding: 44px 32px;
    text-align: center;
  }

  .cta-text p {
    margin: 0 auto;
  }

  .cta-actions {
    flex-direction: row;
  }

  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .scenario-image {
    height: 320px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 52px;
  }

  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .page-hero {
    padding: 54px 0 48px;
  }

  .hero-text h1 {
    font-size: 28px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-visual .visual-card {
    min-height: 220px;
  }

  .section-header h2 {
    font-size: 24px;
  }

  .section-header p {
    font-size: 14px;
  }

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

  .guarantee-card {
    padding: 22px;
  }

  .official-note {
    flex-direction: column;
    padding: 28px 24px;
    gap: 16px;
    text-align: center;
  }

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

  .step-card {
    padding: 22px 18px;
  }

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

  .footer-bottom {
    font-size: 12px;
    padding: 16px;
  }

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

  .cta-actions {
    flex-direction: column;
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .faq-header {
    font-size: 15px;
    padding: 16px 18px;
  }

  .faq-answer {
    padding: 0 18px 18px;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .hero-text h1 {
    font-size: 25px;
  }

  .hero-desc {
    font-size: 14px;
  }

  .hero-visual .visual-card {
    min-height: 180px;
    padding: 18px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .guarantee-icon {
    width: 46px;
    height: 46px;
    font-size: 20px;
    border-radius: 12px;
  }

  .guarantee-body h3 {
    font-size: 16px;
  }

  .mobile-topbar {
    padding: 12px 16px;
  }
}

@media (min-width: 1024px) {
  .mobile-topbar {
    display: none !important;
  }

  .drawer-overlay {
    display: none !important;
  }
}

/* ===== 性能与滚动 ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

main {
  padding-top: 0;
}

.main-container {
  padding-top: 24px;
}