:root {
  --primary: #1E3B2B;
  --primary-light: #2A4F3A;
  --accent: #B98A3E;
  --accent-hover: #D4A558;
  --bg-warm: #F6F3EE;
  --bg-dark: #0D1210;
  --bg-ink: #0B0F0D;
  --text-dark: #2A2A28;
  --text-light: #6B6A66;
  --text-white: #F2F0EA;
  --neon: #3DD6A7;
  --neon-dim: rgba(61, 214, 167, 0.4);
  --border: rgba(0, 0, 0, 0.08);
  --border-dark: rgba(255, 255, 255, 0.1);
  --radius-card: 14px;
  --radius-btn: 999px;
  --radius-input: 10px;
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.12);
  --transition: 0.25s cubic-bezier(0.22, 1, 0.36, 1);
  --container-w: 1200px;
  --space-section: 104px;
  --space-section-mobile: 64px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif; font-weight: 400; line-height: 1.75; color: var(--text-dark); background: var(--bg-warm); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }
h1, h2, h3, h4 { font-family: "Songti SC", "Noto Serif CJK SC", "SimSun", Georgia, serif; font-weight: 600; line-height: 1.35; }

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

/* Header Navigation */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(11, 15, 13, 0.95); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255, 255, 255, 0.06); transition: background 0.3s ease, box-shadow 0.3s ease; }
.site-header.scrolled { background: rgba(11, 15, 13, 0.98); box-shadow: 0 4px 24px rgba(0, 0, 0, 0.28); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; transition: height 0.3s ease; }
.site-header.scrolled .container { height: 60px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: "Songti SC", "Noto Serif CJK SC", serif; font-size: 20px; font-weight: 700; color: #fff; letter-spacing: 0.5px; }
.logo-icon { width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--neon)); display: flex; align-items: center; justify-content: center; font-size: 16px; color: #0B0F0D; flex-shrink: 0; }
.logo span { background: linear-gradient(90deg, var(--accent-hover), var(--neon)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.main-nav { display: flex; align-items: center; gap: 32px; list-style: none; }
.main-nav a { font-size: 15px; color: rgba(255, 255, 255, 0.75); padding: 8px 0; position: relative; transition: color 0.25s ease; }
.main-nav a::after { content: ''; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px; background: var(--neon); transform: scaleX(0); transform-origin: left; transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1); box-shadow: 0 0 8px var(--neon-dim); }
.main-nav a:hover, .main-nav a.active { color: #fff; }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.nav-cta { margin-left: 16px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 15px; font-weight: 500; border-radius: var(--radius-btn); padding: 12px 26px; transition: all var(--transition); border: none; line-height: 1.4; }
.btn-primary { background: var(--accent); color: #1A180F; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 0 24px rgba(185, 138, 62, 0.45); transform: translateY(-2px); }
.btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, 0.45); }
.btn-outline:hover { border-color: var(--neon); color: var(--neon); box-shadow: 0 0 18px rgba(61, 214, 167, 0.2); transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid var(--neon); outline-offset: 2px; }
.btn:active { transform: scale(0.97); }
.btn-lg { padding: 14px 34px; font-size: 16px; }
.btn-block { width: 100%; }
.menu-toggle { display: none; background: none; border: 0; color: #fff; font-size: 26px; cursor: pointer; padding: 6px; }
.mobile-menu { display: none; position: fixed; inset: 0; background: rgba(11, 15, 13, 0.98); z-index: 1001; padding: 80px 32px; flex-direction: column; }
.mobile-menu.open { display: flex; }
.mobile-menu a { color: #fff; font-size: 20px; padding: 16px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.08); font-family: "Songti SC", serif; }
.mobile-menu .btn { margin-top: 32px; }
.mobile-menu-close { position: absolute; top: 20px; right: 24px; background: none; border: 0; color: #fff; font-size: 32px; cursor: pointer; }

/* Hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat; isolation: isolate; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(13, 18, 16, 0.92) 0%, rgba(30, 59, 43, 0.7) 50%, rgba(13, 18, 16, 0.4) 100%); z-index: -1; }
.hero::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 120px; background: linear-gradient(transparent, var(--bg-warm)); z-index: 0; }
.hero .container { position: relative; z-index: 1; padding-top: 120px; padding-bottom: 120px; }
.hero-title { font-size: 54px; color: #fff; letter-spacing: 2px; max-width: 720px; line-height: 1.25; font-weight: 700; text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3); }
.hero-title .accent { color: var(--neon); }
.hero-divider { width: 64px; height: 2px; background: linear-gradient(90deg, var(--accent), var(--neon)); margin: 28px 0; position: relative; }
.hero-divider::before { content: ''; position: absolute; left: 0; top: -3px; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.hero-subtitle { font-size: 18px; color: rgba(255, 255, 255, 0.8); max-width: 560px; line-height: 1.8; margin-bottom: 36px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.hero-meta { display: flex; gap: 28px; margin-top: 48px; flex-wrap: wrap; }
.hero-meta-item { color: rgba(255, 255, 255, 0.65); font-size: 14px; display: flex; align-items: center; gap: 6px; }
.hero-meta-item strong { color: var(--neon); font-size: 18px; font-weight: 700; }
.scroll-hint { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); z-index: 2; color: rgba(255, 255, 255, 0.5); font-size: 13px; display: flex; flex-direction: column; align-items: center; gap: 6px; animation: scrollPulse 2s infinite; }
.scroll-hint i { font-size: 18px; }
@keyframes scrollPulse { 0%, 100% { opacity: 0.5; transform: translateY(0); } 50% { opacity: 1; transform: translateY(6px); } }

/* Sections */
.section { padding: var(--space-section) 0; }
.section-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 56px; gap: 32px; }
.section-tag { font-size: 13px; font-weight: 600; letter-spacing: 3px; color: var(--accent); text-transform: uppercase; display: block; margin-bottom: 8px; }
.section-title { font-size: 32px; color: var(--text-dark); line-height: 1.3; }
.section-desc { font-size: 15px; color: var(--text-light); max-width: 440px; line-height: 1.75; }

/* Services */
.services { background: var(--bg-warm); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.service-card { background: #fff; border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid rgba(0, 0, 0, 0.04); transition: all var(--transition); position: relative; }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(61, 214, 167, 0.3); }
.service-card-img { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: #eee; }
.service-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.service-card:hover .service-card-img img { transform: scale(1.03); }
.service-badge { position: absolute; top: 14px; left: 14px; background: rgba(13, 18, 16, 0.85); color: var(--neon); font-size: 12px; padding: 4px 12px; border-radius: 999px; border: 1px solid rgba(61, 214, 167, 0.4); font-weight: 500; }
.card-body { padding: 22px 24px 24px; }
.card-title { font-size: 18px; font-weight: 600; margin-bottom: 6px; color: var(--text-dark); }
.card-cat { font-size: 13px; color: var(--text-light); margin-bottom: 10px; }
.card-rating { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.stars { color: var(--accent); font-size: 14px; letter-spacing: 1px; }
.rating-num { font-weight: 700; color: var(--accent); font-size: 15px; }
.rec-index { font-size: 12px; color: var(--text-light); background: var(--bg-warm); padding: 3px 10px; border-radius: 999px; }
.card-actions { display: flex; gap: 12px; margin-top: 6px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-outline-dark { border: 1px solid rgba(0, 0, 0, 0.2); color: var(--text-dark); background: transparent; }
.btn-outline-dark:hover { border-color: var(--primary); color: var(--primary); box-shadow: none; transform: translateY(-1px); }
.card-link { font-size: 14px; color: var(--primary); display: inline-flex; align-items: center; gap: 4px; transition: color 0.2s; }
.card-link:hover { color: var(--accent); }

/* Stats */
.stats { background: linear-gradient(135deg, #0D1210 0%, #14251D 100%); padding: 88px 0; position: relative; overflow: hidden; }
.stats::before { content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(61, 214, 167, 0.08), transparent 70%); top: -100px; right: -60px; }
.stats-grid { display: grid; grid-template-columns: 1.2fr 2fr; gap: 64px; align-items: center; }
.stats-left .section-title { color: #fff; }
.stats-left .section-desc { color: rgba(255, 255, 255, 0.55); }
.stats-left .section-tag { color: var(--neon); }
.stats-numbers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat-item { text-align: center; padding: 24px 8px; border: 1px solid rgba(255, 255, 255, 0.06); border-radius: 14px; background: rgba(255, 255, 255, 0.02); transition: all var(--transition); }
.stat-item:hover { border-color: rgba(61, 214, 167, 0.3); }
.stat-num { font-size: 42px; font-weight: 800; color: var(--accent); font-family: "Songti SC", serif; line-height: 1.2; }
.stat-num span { font-size: 22px; font-weight: 600; color: rgba(255, 255, 255, 0.6); margin-left: 2px; }
.stat-label { font-size: 14px; color: rgba(255, 255, 255, 0.6); margin-top: 8px; }
.stat-line { width: 36px; height: 2px; background: linear-gradient(90deg, var(--neon), transparent); margin: 14px auto 0; border-radius: 2px; }

/* Cases */
.cases { background: var(--bg-warm); }
.case-card { display: grid; grid-template-columns: 1fr 1fr; background: #fff; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-card); border: 1px solid rgba(0, 0, 0, 0.04); transition: all var(--transition); margin-bottom: 32px; }
.case-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.case-card:nth-child(even) .case-img { order: 2; }
.case-img { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: #eee; }
.case-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.case-card:hover .case-img img { transform: scale(1.03); }
.case-tag { position: absolute; top: 14px; left: 14px; background: rgba(185, 138, 62, 0.92); color: #fff; font-size: 12px; padding: 4px 12px; border-radius: 999px; font-weight: 600; z-index: 1; }
.case-content { padding: 32px 36px; display: flex; flex-direction: column; justify-content: center; }
.case-meta { display: flex; gap: 12px; font-size: 13px; color: var(--text-light); margin-bottom: 12px; align-items: center; }
.case-meta .avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--primary); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; }
.case-title { font-size: 20px; color: var(--text-dark); margin-bottom: 10px; }
.case-desc { font-size: 15px; color: var(--text-light); line-height: 1.8; margin-bottom: 18px; }
.case-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.case-tags .tag { font-size: 13px; background: var(--bg-warm); padding: 4px 12px; border-radius: 999px; color: var(--text-dark); border: 1px solid rgba(0, 0, 0, 0.04); }

/* Plans */
.plans { background: linear-gradient(180deg, var(--bg-warm) 0%, #fff 100%); }
.plans-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.plan-card { background: #fff; border-radius: 16px; padding: 36px 32px; border: 1px solid rgba(0, 0, 0, 0.06); box-shadow: var(--shadow-card); position: relative; transition: all var(--transition); display: flex; flex-direction: column; }
.plan-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.plan-card.featured { background: linear-gradient(160deg, #14251D 0%, #1E3B2B 100%); color: #fff; border-color: transparent; transform: scale(1.04); box-shadow: 0 12px 40px rgba(30, 59, 43, 0.35); }
.plan-card.featured:hover { transform: scale(1.04) translateY(-4px); }
.plan-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #1A180F; font-size: 13px; font-weight: 700; padding: 6px 20px; border-radius: 999px; box-shadow: 0 4px 16px rgba(185, 138, 62, 0.4); letter-spacing: 1px; }
.plan-top { width: 100%; height: 4px; background: linear-gradient(90deg, var(--accent), var(--neon)); border-radius: 999px; margin-bottom: 24px; }
.plan-name { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.plan-spec { font-size: 14px; color: var(--text-light); margin-bottom: 18px; }
.plan-card.featured .plan-spec { color: rgba(255, 255, 255, 0.6); }
.plan-price { font-size: 34px; font-weight: 800; color: var(--accent); margin-bottom: 20px; font-family: "Songti SC", serif; }
.plan-card.featured .plan-price { color: var(--neon); }
.plan-price small { font-size: 15px; font-weight: 400; color: var(--text-light); margin-left: 2px; }
.plan-features { list-style: none; margin-bottom: 28px; flex-grow: 1; }
.plan-features li { padding: 7px 0; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.plan-features li::before { content: '✓'; width: 20px; height: 20px; border-radius: 50%; background: rgba(61, 214, 167, 0.15); color: var(--neon); display: inline-flex; align-items: center; justify-content: center; font-size: 11px; flex-shrink: 0; }
.plan-card.featured .plan-features li { color: rgba(255, 255, 255, 0.85); }
.plan-card .btn { margin-top: auto; }

/* FAQ */
.faq { background: var(--bg-warm); }
.faq-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 80px; }
.faq-left .section-desc { color: var(--text-light); }
.faq-accordion { border-top: 1px solid rgba(0, 0, 0, 0.08); }
.faq-item { border-bottom: 1px solid rgba(0, 0, 0, 0.08); }
.faq-q { width: 100%; background: none; border: none; padding: 24px 4px; display: flex; justify-content: space-between; align-items: center; text-align: left; font-size: 17px; font-weight: 600; color: var(--text-dark); transition: color 0.2s; cursor: pointer; }
.faq-q:hover { color: var(--primary); }
.faq-q .icon { width: 32px; height: 32px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; transition: all 0.3s; }
.faq-item.open .faq-q { color: var(--primary); }
.faq-item.open .faq-q .icon { background: var(--accent); transform: rotate(45deg); color: #1A180F; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1); }
.faq-a p { padding: 0 4px 24px; font-size: 15px; color: var(--text-light); line-height: 1.8; }

/* Contact */
.contact { background: #fff; }
.contact-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 64px; }
.contact-form-wrap { background: var(--bg-warm); border-radius: 16px; padding: 40px; border: 1px solid rgba(0, 0, 0, 0.04); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; color: var(--text-light); margin-bottom: 8px; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 16px; border: 1px solid rgba(0, 0, 0, 0.1); border-radius: var(--radius-input); background: #fff; font-size: 15px; color: var(--text-dark); transition: all 0.2s; outline: none; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(185, 138, 62, 0.15); }
.form-group textarea { min-height: 100px; resize: vertical; }
.form-group input::placeholder, .form-group textarea::placeholder { color: #aaa; }
.form-tip { font-size: 12px; color: var(--text-light); text-align: center; margin-top: 14px; display: flex; align-items: center; justify-content: center; gap: 6px; }
.form-tip i { color: var(--neon); }
.contact-info { display: flex; flex-direction: column; gap: 28px; justify-content: center; }
.info-item { display: flex; gap: 16px; align-items: flex-start; }
.info-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--primary); color: var(--neon); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.info-item h4 { font-size: 16px; color: var(--text-dark); margin-bottom: 4px; }
.info-item p { font-size: 14px; color: var(--text-light); line-height: 1.6; }
.contact-hours { background: var(--bg-warm); border-radius: 12px; padding: 20px 24px; font-size: 14px; color: var(--text-light); display: flex; align-items: center; gap: 12px; }

/* Footer */
.site-footer { background: var(--bg-ink); color: rgba(255, 255, 255, 0.7); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .logo { font-size: 22px; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, 0.5); max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; font-family: "PingFang SC", sans-serif; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { font-size: 14px; color: rgba(255, 255, 255, 0.6); transition: all 0.2s; }
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.06); padding: 24px 0; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: rgba(255, 255, 255, 0.4); flex-wrap: wrap; gap: 12px; }
.footer-bottom a { color: rgba(255, 255, 255, 0.4); }
.footer-bottom a:hover { color: var(--neon); }

/* Transitions / focus */
a:focus-visible { outline: 2px solid var(--neon); outline-offset: 2px; border-radius: 2px; }

/* Responsive */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: 1fr; gap: 40px; }
  .plans-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .plan-card.featured { transform: none; }
  .plan-card.featured:hover { transform: translateY(-4px); }
  .faq-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .case-card { grid-template-columns: 1fr; }
  .case-card:nth-child(even) .case-img { order: 0; }
  .hero-title { font-size: 42px; }
}
@media (max-width: 768px) {
  :root { --space-section: var(--space-section-mobile); }
  .container { padding: 0 16px; }
  .main-nav { display: none; }
  .menu-toggle { display: block; }
  .nav-cta { display: none; }
  .hero { min-height: 90vh; }
  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 16px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero .btn { width: 100%; }
  .hero-meta { gap: 16px; flex-direction: column; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-numbers { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-num { font-size: 32px; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-title { font-size: 26px; }
  .case-content { padding: 24px; }
  .case-title { font-size: 18px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .plans-grid { grid-template-columns: 1fr; }
  .plan-card { padding: 28px 24px; }
  .faq-q { font-size: 15px; padding: 20px 2px; }
  .case-tags .tag { font-size: 12px; }
  .hero-meta { margin-top: 32px; }
  .hero .container { padding-top: 100px; padding-bottom: 80px; }
  .contact-grid { grid-template-columns: 1fr; }
  .scroll-hint { display: none; }
}
@media (max-width: 520px) {
  .stats-numbers { grid-template-columns: 1fr 1fr; }
  .section-title { font-size: 22px; }
  .btn-lg { width: 100%; }
  .hero-meta-item { font-size: 13px; }
  .hero-meta-item strong { font-size: 16px; }
  .footer-bottom { font-size: 12px; }
}