/* ===== Tech Theme - 科技渐变风（token 驱动，:root 默认值可被站点 appearance.tokens 覆盖） ===== */
:root {
  --primary: #6366f1;
  --accent: #8b5cf6;
  --accentLight: #a78bfa;
  --bgDark: #0f172a;
  --bgDeep: #1e1b4b;
  --footerBg: #020617;
  --brandGradient: linear-gradient(135deg, #6366f1, #8b5cf6);
  --numberGradient: linear-gradient(135deg, #6366f1, #a78bfa);
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; color: #e2e8f0; line-height: 1.6; background: var(--bgDark); }
a { text-decoration: none; color: inherit; transition: color .3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== Header ===== */
.header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: rgba(15,23,42,0.85); backdrop-filter: blur(12px); transition: all .3s; }
.header.scrolled { background: rgba(15,23,42,0.95); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.header-line { height: 2px; background: linear-gradient(90deg, transparent, var(--primary), var(--accent), var(--accentLight), transparent); }
.logo { display: flex; align-items: center; gap: 10px; color: #fff; font-size: 1.2rem; font-weight: 700; }
.logo-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--brandGradient); box-shadow: 0 0 12px rgba(99,102,241,0.6); }
.logo-text { background: linear-gradient(135deg, #e2e8f0, #fff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-menu { display: flex; gap: 4px; }
.nav-link { color: rgba(226,232,240,0.7); padding: 8px 16px; border-radius: 8px; font-size: 0.9rem; transition: all .3s; }
.nav-link:hover { color: #fff; background: rgba(99,102,241,0.15); }
.hotline-btn { display: inline-flex; align-items: center; gap: 6px; background: var(--brandGradient); color: #fff; padding: 8px 20px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; transition: all .3s; }
.hotline-btn:hover { box-shadow: 0 4px 20px rgba(99,102,241,0.5); transform: translateY(-1px); }
.hotline-icon { font-size: 1rem; }
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.mobile-toggle span { display: block; width: 24px; height: 2px; background: #e2e8f0; margin: 5px 0; transition: all .3s; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; margin-top: 72px; }
.hero-bg { position: absolute; inset: 0; background: radial-gradient(ellipse at 30% 50%, rgba(99,102,241,0.15) 0%, transparent 60%), radial-gradient(ellipse at 70% 80%, rgba(139,92,246,0.1) 0%, transparent 50%); }
/* Banner 图片层（上传/多图轮播；photo 在装饰性 hero-bg 之下） */
.hero-photo { position: absolute; inset: 0; overflow: hidden; }
.hero-photo-img { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hero-photo-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(15,23,42,0.82) 0%, rgba(30,27,75,0.6) 100%); }
.hero-carousel { position: absolute; inset: 0; }
.hero-carousel-track { display: flex; height: 100%; transition: transform .8s ease; }
.hero-carousel-slide { flex: 0 0 100%; height: 100%; background-size: cover; background-position: center; }
.hero-carousel-dots { position: absolute; bottom: 24px; left: 0; right: 0; display: flex; justify-content: center; gap: 10px; z-index: 3; }
.hero-carousel-dots .dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.4); cursor: pointer; transition: all .3s; }
.hero-carousel-dots .dot.active { background: var(--accentLight); transform: scale(1.25); box-shadow: 0 0 8px rgba(167,139,250,0.8); }
.hero-particles { position: absolute; inset: 0; overflow: hidden; }
.particle { position: absolute; border-radius: 50%; background: rgba(99,102,241,0.3); animation: float 8s ease-in-out infinite; }
.p1 { width: 6px; height: 6px; top: 20%; left: 10%; animation-delay: 0s; }
.p2 { width: 4px; height: 4px; top: 60%; left: 80%; animation-delay: 2s; }
.p3 { width: 8px; height: 8px; top: 40%; left: 50%; animation-delay: 4s; background: rgba(139,92,246,0.25); }
.p4 { width: 3px; height: 3px; top: 80%; left: 30%; animation-delay: 1s; }
.p5 { width: 5px; height: 5px; top: 15%; left: 70%; animation-delay: 3s; background: rgba(167,139,250,0.3); }
@keyframes float { 0%, 100% { transform: translateY(0) translateX(0); opacity: 0.4; } 50% { transform: translateY(-30px) translateX(15px); opacity: 1; } }
.hero-content { position: relative; z-index: 1; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 60px; align-items: center; padding: 60px 0; }
.hero-badge { display: inline-block; background: rgba(99,102,241,0.15); border: 1px solid rgba(99,102,241,0.3); color: var(--accentLight); padding: 6px 16px; border-radius: 20px; font-size: 0.75rem; font-weight: 700; letter-spacing: 3px; margin-bottom: 24px; }
.hero-title { color: #fff; font-size: 3rem; font-weight: 800; line-height: 1.25; margin-bottom: 20px; }
.hero-subtitle { color: rgba(226,232,240,0.65); font-size: 1rem; line-height: 1.8; margin-bottom: 36px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; height: 360px; }
.hero-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(99,102,241,0.2); animation: spin 20s linear infinite; }
.ring1 { width: 280px; height: 280px; }
.ring2 { width: 200px; height: 200px; border-color: rgba(139,92,246,0.25); animation-direction: reverse; animation-duration: 15s; }
.ring3 { width: 120px; height: 120px; border-color: rgba(167,139,250,0.3); animation-duration: 10s; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.hero-center-icon { font-size: 3rem; color: var(--accentLight); text-shadow: 0 0 40px rgba(99,102,241,0.4); }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 13px 32px; border-radius: 10px; font-size: 0.95rem; font-weight: 600; transition: all .3s; cursor: pointer; border: none; }
.btn-primary { background: var(--brandGradient); color: #fff; }
.btn-primary:hover { box-shadow: 0 6px 25px rgba(99,102,241,0.45); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--accentLight); border: 1.5px solid rgba(99,102,241,0.4); }
.btn-outline:hover { background: rgba(99,102,241,0.1); border-color: var(--primary); }
.btn-block { width: 100%; }

/* ===== Sections ===== */
.section { padding: 90px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag { display: inline-block; color: var(--accent); font-size: 0.75rem; font-weight: 700; letter-spacing: 3px; margin-bottom: 12px; }
.section-title { font-size: 2.2rem; font-weight: 800; color: #fff; margin-bottom: 14px; }
.section-subtitle { color: rgba(226,232,240,0.55); font-size: 0.95rem; max-width: 600px; margin: 0 auto; line-height: 1.7; }

/* ===== Services ===== */
.section-services { background: var(--bgDark); }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.service-card { position: relative; background: rgba(30,41,59,0.6); border: 1px solid rgba(99,102,241,0.1); border-radius: 16px; padding: 32px 24px; text-align: center; transition: all .4s; overflow: hidden; backdrop-filter: blur(8px); }
.service-card:hover { border-color: rgba(99,102,241,0.4); transform: translateY(-6px); }
.service-glow { position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(99,102,241,0.06) 0%, transparent 70%); opacity: 0; transition: opacity .4s; }
.service-card:hover .service-glow { opacity: 1; }
.service-icon { font-size: 2.2rem; margin-bottom: 16px; filter: grayscale(0.2); }
.service-title { font-size: 1.05rem; font-weight: 700; color: #f1f5f9; margin-bottom: 10px; }
.service-desc { color: rgba(226,232,240,0.5); font-size: 0.83rem; line-height: 1.7; margin-bottom: 16px; }
.service-link { color: var(--accent); font-size: 0.83rem; font-weight: 600; transition: color .3s; }
.service-link:hover { color: var(--accentLight); }
.service-link span { display: inline-block; transition: transform .3s; }
.service-card:hover .service-link span { transform: translateX(4px); }

/* ===== Advantages ===== */
.section-advantages { background: linear-gradient(180deg, var(--bgDark) 0%, var(--bgDeep) 100%); }
.advantages-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.advantage-step { text-align: center; padding: 36px 20px; border-radius: 16px; background: rgba(30,41,59,0.4); border: 1px solid rgba(99,102,241,0.1); transition: all .3s; }
.advantage-step:hover { border-color: rgba(99,102,241,0.35); background: rgba(99,102,241,0.08); }
.step-number { font-size: 2.5rem; font-weight: 900; background: var(--numberGradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 16px; }
.step-title { font-size: 1.1rem; font-weight: 700; color: #f1f5f9; margin-bottom: 12px; }
.step-desc { color: rgba(226,232,240,0.5); font-size: 0.85rem; line-height: 1.7; }

/* ===== About ===== */
.section-about { background: var(--bgDark); }
.about-content { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 50px; align-items: start; }
.about-company { font-size: 1.5rem; color: #fff; font-weight: 700; margin-bottom: 18px; }
.about-desc { color: rgba(226,232,240,0.6); line-height: 1.9; margin-bottom: 28px; font-size: 0.95rem; }
.about-features { display: flex; flex-wrap: wrap; gap: 10px; }
.feature-chip { display: inline-flex; align-items: center; gap: 8px; background: rgba(99,102,241,0.1); border: 1px solid rgba(99,102,241,0.2); color: var(--accentLight); padding: 8px 16px; border-radius: 20px; font-size: 0.85rem; }
.chip-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.about-stats { display: grid; gap: 16px; }
.stat-card { background: rgba(30,41,59,0.5); border: 1px solid rgba(99,102,241,0.15); border-radius: 16px; padding: 28px 24px; text-align: center; transition: all .3s; }
.stat-card:hover { border-color: rgba(99,102,241,0.4); }
.stat-number { font-size: 2.5rem; font-weight: 900; background: var(--numberGradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 4px; }
.stat-label { color: rgba(226,232,240,0.5); font-size: 0.85rem; }

/* ===== Partners ===== */
.section-partners { background: linear-gradient(180deg, var(--bgDark), var(--bgDeep)); overflow: hidden; }
.partners-scroll { display: flex; gap: 16px; animation: scrollX 25s linear infinite; width: max-content; }
@keyframes scrollX { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
.partner-chip { background: rgba(30,41,59,0.5); border: 1px solid rgba(99,102,241,0.15); border-radius: 12px; padding: 18px 32px; color: rgba(226,232,240,0.7); font-size: 0.9rem; font-weight: 600; white-space: nowrap; transition: all .3s; flex-shrink: 0; }
.partner-chip:hover { border-color: var(--primary); color: #fff; }

/* ===== News ===== */
.section-news { background: var(--bgDark); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: rgba(30,41,59,0.5); border: 1px solid rgba(99,102,241,0.1); border-radius: 16px; overflow: hidden; transition: all .4s; }
.news-card:hover { border-color: rgba(99,102,241,0.35); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(99,102,241,0.1); }
.news-image { height: 190px; background-size: cover; background-position: center; background-color: #1e293b; }
.news-body { padding: 24px; }
.news-date { font-size: 0.78rem; color: var(--accent); font-weight: 600; }
.news-title { font-size: 1rem; font-weight: 700; color: #f1f5f9; margin: 8px 0 12px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-summary { font-size: 0.83rem; color: rgba(226,232,240,0.45); line-height: 1.7; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-link { color: var(--accent); font-size: 0.83rem; font-weight: 600; }
.news-link:hover { color: var(--accentLight); }

/* ===== Contact ===== */
.section-contact { background: linear-gradient(180deg, var(--bgDark), var(--bgDeep)); }
.contact-content { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info { display: grid; gap: 16px; }
.contact-card { display: flex; gap: 16px; align-items: flex-start; background: rgba(30,41,59,0.4); border: 1px solid rgba(99,102,241,0.1); border-radius: 12px; padding: 20px; transition: all .3s; }
.contact-card:hover { border-color: rgba(99,102,241,0.3); }
.contact-card-icon { font-size: 1.4rem; flex-shrink: 0; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: rgba(99,102,241,0.15); border-radius: 10px; }
.contact-card strong { display: block; color: #f1f5f9; margin-bottom: 4px; font-size: 0.9rem; }
.contact-card p { color: rgba(226,232,240,0.5); font-size: 0.83rem; margin: 2px 0; }
.contact-form-wrap { background: rgba(30,41,59,0.4); border: 1px solid rgba(99,102,241,0.1); border-radius: 16px; padding: 32px; }
.contact-form-wrap h3 { font-size: 1.15rem; color: #fff; margin-bottom: 24px; font-weight: 700; }
.form-group { margin-bottom: 14px; }
.form-input { width: 100%; padding: 12px 16px; background: rgba(15,23,42,0.6); border: 1px solid rgba(99,102,241,0.15); border-radius: 10px; color: #e2e8f0; font-size: 0.9rem; transition: border-color .3s; outline: none; font-family: inherit; }
.form-input::placeholder { color: rgba(226,232,240,0.3); }
.form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.1); }
.form-textarea { resize: vertical; min-height: 90px; }

/* ===== Footer ===== */
.footer { background: var(--footerBg); color: rgba(226,232,240,0.5); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(99,102,241,0.1); }
.footer-logo { display: flex; align-items: center; gap: 10px; color: #fff; font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; }
.footer-about p { font-size: 0.83rem; line-height: 1.8; }
.footer-links h4, .footer-contact h4 { color: #f1f5f9; font-size: 1rem; margin-bottom: 18px; font-weight: 600; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.83rem; transition: color .3s; }
.footer-links a:hover { color: var(--accent); }
.footer-contact p { font-size: 0.83rem; margin-bottom: 8px; }
.footer-bottom { text-align: center; padding: 20px 0; font-size: 0.78rem; color: rgba(226,232,240,0.3); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-timeline { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-menu { display: none; position: fixed; top: 72px; left: 0; width: 100%; background: rgba(15,23,42,0.98); flex-direction: column; padding: 20px; gap: 4px; backdrop-filter: blur(12px); }
  .nav-menu.active { display: flex; }
  .hotline-btn { display: none; }
  .mobile-toggle { display: block; }
  .mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .mobile-toggle.active span:nth-child(2) { opacity: 0; }
  .mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .hero { min-height: auto; margin-top: 72px; }
  .hero-title { font-size: 2rem; }
  .services-grid { grid-template-columns: 1fr; }
  .advantages-timeline { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .contact-content { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
}

/* ============================================================
   版块布局变体（外观风格面板可选）
   ============================================================ */

/* --- Services 列表式（卡片网格 → 横排条目） --- */
.services-grid.variant-list { display: flex; flex-direction: column; gap: 14px; }
.services-grid.variant-list .service-card { display: flex; align-items: center; gap: 22px; }
.services-grid.variant-list .service-icon { flex-shrink: 0; margin-bottom: 0 !important; }
.services-grid.variant-list .service-title { margin-bottom: 4px !important; }
.services-grid.variant-list .service-desc { margin-bottom: 0 !important; flex: 1; }

/* --- Advantages 网格卡片（时间线 → 2x2 网格） --- */
.advantages-timeline.variant-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.advantages-timeline.variant-grid .advantage-step { border: 1px solid rgba(255,255,255,0.1); background: rgba(255,255,255,0.04); padding: 28px 24px; border-radius: 14px; }
.advantages-timeline.variant-grid .advantage-step::before, .advantages-timeline.variant-grid .advantage-step::after { display: none; }
.advantages-timeline.variant-grid .step-number { font-size: 2rem; }

/* --- News 横向行（卡片 → 行式） --- */
.news-grid.variant-rows { display: flex; flex-direction: column; gap: 16px; }
.news-grid.variant-rows .news-card { display: flex; align-items: stretch; }
.news-grid.variant-rows .news-image { width: 220px; min-height: 140px; flex-shrink: 0; }

/* --- About 左右反转 --- */
.about-content.variant-reverse { direction: rtl; }
.about-content.variant-reverse > * { direction: ltr; }

/* --- Contact 堆叠（左右 → 上下） --- */
.contact-content.variant-stack { display: flex; flex-direction: column; }
.contact-content.variant-stack .contact-info { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-bottom: 24px; }

/* --- 移动端适配 --- */
@media (max-width: 960px) {
  .services-grid.variant-list .service-card { flex-direction: column; }
  .advantages-timeline.variant-grid { grid-template-columns: 1fr; }
  .news-grid.variant-rows .news-card { flex-direction: column; }
  .news-grid.variant-rows .news-image { width: 100%; min-height: 180px; }
  .contact-content.variant-stack .contact-info { grid-template-columns: 1fr; }
}