/* ===== Business Theme - 深蓝商务风（token 驱动，:root 默认值可被站点 appearance.tokens 覆盖） ===== */
:root {
  --primary: #1a3a5c;
  --primaryDark: #15304d;
  --accent: #4da8da;
  --cta: #e8a838;
  --ctaDark: #d4952e;
  --bgSoft: #f8f9fc;
  --footerBg: #1a2a3a;
  --headerBg: rgba(26,58,92,0.92);
  --headerBgSolid: rgba(26,58,92,0.98);
  --heroOverlay: linear-gradient(135deg, rgba(26,58,92,0.88) 0%, rgba(26,58,92,0.65) 100%);
  --iconBg: linear-gradient(135deg, #e8f4fd, #d1ecf9);
}

/* ===== CSS Reset & Base ===== */
*, *::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", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; color: #333; line-height: 1.6; }
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: var(--headerBg); backdrop-filter: blur(8px); transition: all .3s; }
.header.scrolled { background: var(--headerBgSolid); box-shadow: 0 2px 20px rgba(0,0,0,0.15); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.logo { display: flex; align-items: center; gap: 8px; color: #fff; font-size: 1.2rem; font-weight: 700; }
.logo-icon { width: 32px; height: 32px; color: var(--accent); }
.nav-menu { display: flex; gap: 6px; }
.nav-link { color: rgba(255,255,255,0.85); padding: 8px 14px; border-radius: 6px; font-size: 0.9rem; transition: all .3s; }
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.1); }
.hotline-btn { display: inline-flex; align-items: center; gap: 6px; background: var(--cta); color: #fff; padding: 8px 18px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; transition: all .3s; }
.hotline-btn:hover { background: var(--ctaDark); transform: translateY(-1px); }
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.mobile-toggle span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; transition: all .3s; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 600px; display: flex; align-items: center; background-size: cover; background-position: center; background-attachment: fixed; margin-top: 70px; }
.hero-overlay { position: absolute; inset: 0; background: var(--heroOverlay); }
/* Banner 多图轮播（横向滚动，遮罩仍由 hero-overlay 提供） */
.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: 22px; 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(255,255,255,0.45); cursor: pointer; transition: all .3s; }
.hero-carousel-dots .dot.active { background: #fff; transform: scale(1.25); box-shadow: 0 0 8px rgba(255,255,255,0.8); }
.hero-content { position: relative; z-index: 1; max-width: 700px; padding: 80px 0; }
.hero-tag { color: var(--accent); font-size: 0.9rem; font-weight: 600; margin-bottom: 16px; letter-spacing: 2px; text-transform: uppercase; }
.hero-title { color: #fff; font-size: 2.8rem; font-weight: 800; line-height: 1.3; margin-bottom: 20px; }
.hero-subtitle { color: rgba(255,255,255,0.8); font-size: 1rem; line-height: 1.8; margin-bottom: 36px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 32px; border-radius: 6px; font-size: 0.95rem; font-weight: 600; transition: all .3s; cursor: pointer; border: 2px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primaryDark); transform: translateY(-2px); box-shadow: 0 4px 15px rgba(26,58,92,0.4); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.btn-block { width: 100%; }

/* ===== Sections ===== */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 50px; }
.section-title { font-size: 2rem; font-weight: 700; color: var(--primary); margin-bottom: 14px; }
.section-subtitle { color: #666; font-size: 0.95rem; max-width: 600px; margin: 0 auto; line-height: 1.7; }

/* ===== Services ===== */
.section-services { background: var(--bgSoft); }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card { background: #fff; border-radius: 12px; padding: 32px 24px; text-align: center; transition: all .3s; border: 1px solid #eef1f6; }
.service-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(26,58,92,0.1); border-color: var(--accent); }
.service-icon { width: 56px; height: 56px; margin: 0 auto 18px; background: var(--iconBg); border-radius: 14px; display: flex; align-items: center; justify-content: center; color: var(--primary); }
.service-icon svg { width: 28px; height: 28px; }
.service-title { font-size: 1.1rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.service-desc { color: #666; font-size: 0.85rem; line-height: 1.7; margin-bottom: 16px; }
.service-link { color: var(--accent); font-size: 0.85rem; font-weight: 600; }
.service-link:hover { color: var(--primary); }

/* ===== Advantages ===== */
.section-advantages { background: #fff; }
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.advantage-card { text-align: center; padding: 40px 24px; border-radius: 12px; background: var(--bgSoft); transition: all .3s; }
.advantage-card:hover { background: var(--primary); color: #fff; transform: translateY(-4px); box-shadow: 0 12px 40px rgba(26,58,92,0.2); }
.advantage-card:hover .advantage-icon { background: rgba(255,255,255,0.15); color: var(--accent); }
.advantage-card:hover .advantage-title { color: #fff; }
.advantage-card:hover .advantage-desc { color: rgba(255,255,255,0.8); }
.advantage-icon { width: 64px; height: 64px; margin: 0 auto 20px; background: var(--iconBg); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary); transition: all .3s; }
.advantage-icon svg { width: 30px; height: 30px; }
.advantage-title { font-size: 1.15rem; font-weight: 700; color: var(--primary); margin-bottom: 12px; transition: color .3s; }
.advantage-desc { color: #666; font-size: 0.85rem; line-height: 1.7; transition: color .3s; }

/* ===== About ===== */
.section-about { background: var(--bgSoft); }
.about-content { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 50px; align-items: start; }
.about-company { font-size: 1.5rem; color: var(--primary); font-weight: 700; margin-bottom: 18px; }
.about-desc { color: #555; line-height: 1.9; margin-bottom: 30px; font-size: 0.95rem; }
.about-stats { display: flex; gap: 40px; }
.stat-item { display: flex; flex-direction: column; align-items: center; }
.stat-number { font-size: 2.2rem; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 0.85rem; color: #888; margin-top: 4px; }
.about-features { background: #fff; border-radius: 12px; padding: 30px; border: 1px solid #eef1f6; }
.feature-item { display: flex; align-items: center; gap: 12px; padding: 12px 0; color: #444; font-size: 0.95rem; border-bottom: 1px solid #f0f0f0; }
.feature-item:last-of-type { border-bottom: none; }
.feature-item svg { color: var(--accent); flex-shrink: 0; }

/* ===== Partners ===== */
.section-partners { background: #fff; }
.partners-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.partner-card { background: var(--bgSoft); border: 1px solid #eef1f6; border-radius: 10px; padding: 24px 16px; text-align: center; font-size: 0.9rem; font-weight: 600; color: #555; transition: all .3s; }
.partner-card:hover { border-color: var(--accent); color: var(--primary); box-shadow: 0 4px 15px rgba(26,58,92,0.08); }

/* ===== News ===== */
.section-news { background: var(--bgSoft); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card { background: #fff; border-radius: 12px; overflow: hidden; border: 1px solid #eef1f6; transition: all .3s; }
.news-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(26,58,92,0.1); }
.news-image { height: 200px; background-size: cover; background-position: center; background-color: #e8ecf1; }
.news-body { padding: 24px; }
.news-date { font-size: 0.8rem; color: #999; }
.news-title { font-size: 1rem; font-weight: 700; color: var(--primary); 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: 0.85rem; color: #666; 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: 0.85rem; font-weight: 600; }

/* ===== Contact ===== */
.section-contact { background: #fff; }
.contact-content { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info h3, .contact-form h3 { font-size: 1.2rem; color: var(--primary); margin-bottom: 24px; font-weight: 700; }
.contact-item { display: flex; gap: 14px; margin-bottom: 22px; align-items: flex-start; }
.contact-item svg { color: var(--accent); flex-shrink: 0; margin-top: 2px; }
.contact-item strong { display: block; color: var(--primary); margin-bottom: 4px; font-size: 0.9rem; }
.contact-item p { color: #666; font-size: 0.85rem; margin: 2px 0; }
.form-group { margin-bottom: 16px; }
.form-input { width: 100%; padding: 12px 16px; border: 1px solid #ddd; border-radius: 8px; font-size: 0.9rem; transition: border-color .3s; outline: none; font-family: inherit; }
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(77,168,218,0.1); }
.form-textarea { resize: vertical; min-height: 100px; }

/* ===== Footer ===== */
.footer { background: var(--footerBg); color: rgba(255,255,255,0.7); 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(255,255,255,0.1); }
.footer-logo { display: flex; align-items: center; gap: 8px; color: #fff; font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; }
.footer-logo .logo-icon { width: 28px; height: 28px; color: var(--accent); }
.footer-about p { font-size: 0.85rem; line-height: 1.8; }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: 1rem; margin-bottom: 18px; font-weight: 600; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.85rem; transition: color .3s; }
.footer-links a:hover { color: var(--accent); }
.footer-contact p { font-size: 0.85rem; margin-bottom: 8px; }
.footer-bottom { text-align: center; padding: 20px 0; font-size: 0.8rem; color: rgba(255,255,255,0.5); }

/* ===== 布局变体（layoutVariants）===== */
.services-grid.variant-two-col { grid-template-columns: repeat(2, 1fr); }
.services-grid.variant-three-col { grid-template-columns: repeat(3, 1fr); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-menu { display: none; position: fixed; top: 70px; left: 0; width: 100%; background: var(--headerBgSolid); flex-direction: column; padding: 20px; gap: 4px; }
  .nav-menu.active { display: flex; }
  .nav-link { padding: 12px 16px; }
  .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: 500px; }
  .hero-title { font-size: 2rem; }
  .services-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .contact-content { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .about-stats { justify-content: center; }
  .section { padding: 50px 0; }
}

/* ============================================================
   版块布局变体（后台「外观风格 → 布局变体」可选）
   variant-center / variant-split / variant-list / variant-numbered
   variant-banner-strip / variant-rows / variant-featured
   variant-split-reverse / variant-cards / variant-marquee / variant-logos
   ============================================================ */

/* --- Banner 居中 --- */
.hero.variant-center .hero-content { text-align: center; margin: 0 auto; }
.hero.variant-center .hero-buttons { justify-content: center; }

/* --- Banner 分屏（左文右图） --- */
.hero.variant-split { background: var(--bgSoft) !important; background-image: none !important; min-height: 0; padding: 72px 0; }
.hero.variant-split .hero-overlay { display: none; }
.hero-split-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.hero-split-text .hero-tag { color: var(--primary); }
.hero-split-text .hero-title { color: var(--heading, var(--primary)); }
.hero-split-text .hero-subtitle { color: var(--text, #555); }
.hero-split-img { position: relative; height: 420px; border-radius: 14px; overflow: hidden; box-shadow: 0 16px 48px rgba(0,0,0,0.14); }
.hero-split-img-bg { width: 100%; height: 100%; background-size: cover; background-position: center; }
.hero-split-img .hero-carousel { position: absolute; inset: 0; }

/* --- Services 列表式 --- */
.services-grid.variant-list { display: grid; grid-template-columns: 1fr; gap: 16px; }
.services-grid.variant-list .service-card {
  display: grid;
  grid-template-areas: "icon title link" "icon desc link";
  grid-template-columns: 64px 1fr auto;
  gap: 4px 22px;
  align-items: center;
}
.services-grid.variant-list .service-icon { grid-area: icon; margin-bottom: 0 !important; }
.services-grid.variant-list .service-title { grid-area: title; margin-bottom: 0 !important; }
.services-grid.variant-list .service-desc { grid-area: desc; margin-bottom: 0 !important; }
.services-grid.variant-list .service-link { grid-area: link; }

/* --- Advantages 大编号列表 --- */
.advantages-grid.variant-numbered { counter-reset: advnum; display: flex; flex-direction: column; gap: 0; }
.advantages-grid.variant-numbered .advantage-card {
  display: flex; align-items: flex-start; gap: 28px;
  padding: 26px 0; border-bottom: 1px solid var(--line, #e5e5e5);
  background: none; box-shadow: none; border-radius: 0;
}
.advantages-grid.variant-numbered .advantage-card:last-child { border-bottom: none; }
.advantages-grid.variant-numbered .advantage-card::before {
  counter-increment: advnum; content: "0" counter(advnum);
  font-size: 2.4rem; font-weight: 900; color: var(--primary); line-height: 1;
  flex-shrink: 0; min-width: 64px; font-variant-numeric: tabular-nums;
}
.advantages-grid.variant-numbered .advantage-icon { display: none; }

/* --- Advantages 色带横排 --- */
.advantages-grid.variant-banner-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; background: var(--primary); border-radius: 16px; overflow: hidden; }
.advantages-grid.variant-banner-strip .advantage-card { background: none; box-shadow: none; border-radius: 0; padding: 28px 24px; border-right: 1px solid rgba(255,255,255,0.18); }
.advantages-grid.variant-banner-strip .advantage-card:last-child { border-right: none; }
.advantages-grid.variant-banner-strip .advantage-title { color: #fff; }
.advantages-grid.variant-banner-strip .advantage-desc { color: rgba(255,255,255,0.82); }

/* --- News 横向行（图左文右） --- */
.news-grid.variant-rows { display: flex; flex-direction: column; gap: 18px; }
.news-grid.variant-rows .news-card {
  display: grid;
  grid-template-areas: "img body";
  grid-template-columns: 220px 1fr;
  align-items: start;
}
.news-grid.variant-rows .news-image { grid-area: img; height: 140px; }
.news-grid.variant-rows .news-body { grid-area: body; }

/* --- News 焦点（首条大图） --- */
.news-grid.variant-featured { grid-template-columns: repeat(2, 1fr); }
.news-grid.variant-featured .news-card:first-child {
  grid-column: 1 / -1;
  display: grid;
  grid-template-areas: "img body";
  grid-template-columns: 1.15fr 1fr;
  align-items: center;
}
.news-grid.variant-featured .news-card:first-child .news-image { grid-area: img; height: 300px; }
.news-grid.variant-featured .news-card:first-child .news-body { grid-area: body; }
.news-grid.variant-featured .news-card:first-child .news-title { font-size: 1.4rem; }

/* --- About 居中 --- */
.about-content.variant-center { grid-template-columns: 1fr; text-align: center; max-width: 800px; margin: 0 auto; }
.about-content.variant-center .about-stats { justify-content: center; }
.about-content.variant-center .about-features { display: flex; flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 12px; }

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

/* --- Contact 卡片式 --- */
.contact-content.variant-cards { grid-template-columns: 1fr; }
.contact-content.variant-cards .contact-info { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.contact-content.variant-cards .contact-info h3 { grid-column: 1 / -1; }
.contact-content.variant-cards .contact-form { margin-top: 28px; }

/* --- Contact 居中（无表单） --- */
.contact-content.variant-center { grid-template-columns: 1fr; max-width: 620px; margin: 0 auto; }
.contact-content.variant-center .contact-form { display: none; }
.contact-content.variant-center .contact-info h3 { text-align: center; }

/* --- Partners 大格品牌墙 --- */
.partners-grid.variant-logos { grid-template-columns: repeat(3, 1fr); gap: 24px; }
.partners-grid.variant-logos .partner-card { padding: 32px 20px; font-size: 1.05rem; font-weight: 700; }

/* --- 移动端适配 --- */
@media (max-width: 960px) {
  .hero-split-inner { grid-template-columns: 1fr; }
  .hero-split-img { height: 240px; }
  .services-grid.variant-list .service-card { grid-template-areas: "icon title" "icon desc"; grid-template-columns: 48px 1fr; }
  .services-grid.variant-list .service-link { display: none; }
  .news-grid.variant-rows .news-card { grid-template-areas: "img" "body"; grid-template-columns: 1fr; }
  .news-grid.variant-rows .news-image { height: 180px; }
  .news-grid.variant-featured { grid-template-columns: 1fr; }
  .news-grid.variant-featured .news-card:first-child { grid-template-areas: "img" "body"; grid-template-columns: 1fr; }
  .news-grid.variant-featured .news-card:first-child .news-image { height: 200px; }
  .advantages-grid.variant-banner-strip { grid-template-columns: 1fr 1fr; }
  .advantages-grid.variant-banner-strip .advantage-card { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.18); }
  .contact-content.variant-cards .contact-info { grid-template-columns: 1fr; }
  .partners-grid.variant-logos { grid-template-columns: 1fr 1fr; }
}


/* --- Partners 跑马灯 --- */
.partners-marquee { overflow: hidden; }
.partners-track { display: flex; gap: 20px; width: max-content; animation: marqueeScroll 30s linear infinite; }
.partners-marquee:hover .partners-track { animation-play-state: paused; }
@keyframes marqueeScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }