/* ===== 全局reset & 基础 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #1a1a1a; background: #fff; line-height: 1.6;
}
a { text-decoration: none; color: inherit; transition: 0.3s; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
::selection { background: #0057a8; color: #fff; }

/* ===== 容器 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }

/* ===== 导航栏 ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
  height: 72px; display: flex; align-items: center;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-brand h1 { font-size: 20px; font-weight: 700; color: #0057a8; letter-spacing: 1px; }
.nav-brand .brand-en { font-size: 10px; color: #aaa; letter-spacing: 2px; text-transform: uppercase; display: block; margin-top: 1px; }
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu a { padding: 8px 16px; font-size: 14px; color: #555; border-radius: 24px; transition: all 0.3s; }
.nav-menu a:hover { background: #f0f4f8; color: #0057a8; }
.nav-menu a.active { background: #0057a8; color: #fff; }
.mobile-menu-btn { display: none; background: none; border: none; font-size: 26px; cursor: pointer; color: #0057a8; }

/* ===== Hero 全屏沉浸式 - 百岁山风格 ===== */
.hero-fullscreen {
  position: relative; width: 100%; height: 100vh;
  min-height: 600px; overflow: hidden;
  background: linear-gradient(160deg, #003d7a 0%, #0057a8 40%, #0077c0 70%, #00a0d0 100%);
}
.hero-bg-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.hero-bg-placeholder::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 80%, rgba(0,40,80,0.4) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 20% 20%, rgba(0,80,140,0.3) 0%, transparent 50%),
    linear-gradient(180deg, rgba(0,30,70,0.1) 0%, rgba(0,60,120,0.2) 100%);
  pointer-events: none;
}
.hero-bg-placeholder::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 35%;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23ffffff' fill-opacity='0.05' d='M0,224L48,213.3C96,203,192,181,288,181.3C384,181,480,203,576,218.7C672,235,768,245,864,229.3C960,213,1056,171,1152,149.3C1248,128,1344,128,1392,128L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") no-repeat bottom/cover;
  pointer-events: none;
}
.hero-bg-content {
  text-align: center; color: #fff; z-index: 1; padding: 0 20px;
}
.hero-pretitle {
  font-size: 14px; letter-spacing: 4px; text-transform: uppercase;
  color: rgba(255,255,255,0.75); margin-bottom: 24px;
}
.hero-maintitle {
  font-size: clamp(48px, 7vw, 88px); font-weight: 800;
  letter-spacing: 6px; color: #fff; margin-bottom: 20px; text-shadow: 0 4px 30px rgba(0,0,0,0.2);
}
.hero-subtitle { font-size: clamp(16px, 2.5vw, 22px); color: rgba(255,255,255,0.9); margin-bottom: 10px; letter-spacing: 2px; }
.hero-desc { font-size: 14px; color: rgba(255,255,255,0.65); margin-bottom: 48px; letter-spacing: 1px; }
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-hero-primary {
  display: inline-block; padding: 14px 40px; background: #fff; color: #0057a8;
  border-radius: 30px; font-size: 15px; font-weight: 700; transition: all 0.3s; letter-spacing: 1px;
}
.btn-hero-primary:hover { background: rgba(255,255,255,0.88); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.2); }
.btn-hero-outline {
  display: inline-block; padding: 14px 40px; background: transparent; color: #fff;
  border: 1.5px solid rgba(255,255,255,0.6); border-radius: 30px;
  font-size: 15px; font-weight: 600; transition: all 0.3s;
}
.btn-hero-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.hero-scroll-hint {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,0.5); font-size: 12px; letter-spacing: 2px;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== 品牌宣言 ===== */
.brand-statement { padding: 80px 0; text-align: center; }
.statement-inner { display: flex; align-items: center; gap: 48px; }
.statement-line { flex: 1; height: 1px; background: #e0e6ed; }
.statement-quote {
  font-size: clamp(22px, 3vw, 32px); font-weight: 300;
  color: #0057a8; letter-spacing: 2px; white-space: nowrap; font-style: normal;
}

/* ===== 产品展示 ===== */
.products-showcase { padding: 100px 0; }
.products-showcase .section-title { font-size: 36px; font-weight: 800; text-align: center; margin-bottom: 8px; }
.products-showcase .section-subtitle { text-align: center; font-size: 15px; color: #999; margin-bottom: 60px; }
.showcase-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.showcase-item { border-radius: 24px; overflow: hidden; background: #f8fafc; transition: all 0.3s; }
.showcase-item:hover { transform: translateY(-6px); box-shadow: 0 20px 60px rgba(0,87,168,0.1); }
.showcase-img {
  height: 320px; background: linear-gradient(135deg, #e8f4fd, #cce8f7);
  display: flex; align-items: center; justify-content: center;
  color: #0057a8; font-size: 18px; text-align: center;
}
.showcase-label { padding: 36px; }
.showcase-label h3 { font-size: 26px; font-weight: 800; color: #1a1a1a; margin-bottom: 8px; }
.showcase-label p { font-size: 14px; color: #888; margin-bottom: 20px; }
.showcase-label a { color: #0057a8; font-size: 14px; font-weight: 600; }

/* ===== 四大标准 ===== */
.features-simple { padding: 100px 0; }
.features-4col { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 60px; }
.feat-item { text-align: center; padding: 48px 32px; border-right: 1px solid #eee; }
.feat-item:last-child { border-right: none; }
.feat-num { font-size: 48px; font-weight: 800; color: #e8f4fd; margin-bottom: 16px; line-height: 1; }
.feat-item h3 { font-size: 24px; font-weight: 700; color: #0057a8; margin-bottom: 12px; }
.feat-item p { font-size: 14px; color: #888; line-height: 1.8; }

/* ===== 品牌故事预览 ===== */
.brand-preview { padding: 100px 0; }
.preview-inner { display: flex; align-items: center; gap: 80px; }
.preview-img {
  flex: 1; min-height: 440px; border-radius: 24px;
  background: linear-gradient(135deg, #0057a8, #00a3e0);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.75); font-size: 18px;
}
.preview-text { flex: 1; }
.preview-tag { font-size: 12px; letter-spacing: 3px; color: #0057a8; text-transform: uppercase; font-weight: 600; margin-bottom: 20px; }
.preview-text h2 { font-size: 40px; font-weight: 800; color: #1a1a1a; line-height: 1.25; margin-bottom: 24px; }
.preview-body { font-size: 16px; color: #666; line-height: 2; margin-bottom: 32px; }
.preview-link { color: #0057a8; font-size: 15px; font-weight: 700; }

/* ===== 招商CTA ===== */
.agent-cta { padding: 80px 0; background: #f8fafc; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta-inner h2 { font-size: 28px; font-weight: 800; color: #1a1a1a; margin-bottom: 8px; }
.cta-inner p { font-size: 15px; color: #888; }
.btn-primary {
  display: inline-block; padding: 14px 36px; background: #0057a8; color: #fff;
  border-radius: 30px; font-size: 15px; font-weight: 700; transition: all 0.3s; white-space: nowrap;
}
.btn-primary:hover { background: #003d7a; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,87,168,0.3); }

/* ===== 区块通用 ===== */
.section { padding: 100px 0; }
.bg-light { background: #f8fafc; }
.section-title { font-size: 36px; font-weight: 800; color: #1a1a1a; margin-bottom: 12px; }
.section-subtitle { font-size: 15px; color: #888; }

/* ===== 页面通用标题栏（其他页面） ===== */
.page-header {
  background: linear-gradient(135deg, #0057a8, #00a3e0);
  padding: 140px 0 80px; text-align: center; color: #fff;
}
.page-header h1 { font-size: 48px; font-weight: 800; margin-bottom: 12px; }
.page-header p { font-size: 18px; opacity: 0.85; }

/* ===== 产品详情页 ===== */
.products-full { padding: 80px 0; }
.product-detail { display: flex; gap: 60px; align-items: center; padding: 60px 0; border-bottom: 1px solid #eee; }
.product-detail:last-child { border-bottom: none; }
.product-detail:nth-child(even) { flex-direction: row-reverse; }
.product-detail-img {
  flex: 1; min-height: 360px; border-radius: 24px;
  background: linear-gradient(135deg, #e8f4fd, #cce8f7);
  display: flex; align-items: center; justify-content: center;
  color: #0057a8; font-size: 18px;
}
.product-detail-info { flex: 1; }
.product-detail-info h2 { font-size: 36px; font-weight: 800; color: #1a1a1a; margin-bottom: 12px; }
.product-detail-info .spec { font-size: 15px; color: #0057a8; font-weight: 600; margin-bottom: 20px; }
.product-detail-info p { font-size: 16px; color: #666; line-height: 1.9; margin-bottom: 24px; }
.price-box { background: #f8fafc; border-radius: 16px; padding: 24px; margin-bottom: 28px; }
.price-row2 { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.price-label { font-size: 14px; color: #999; }
.price-val { font-size: 24px; font-weight: 700; color: #0057a8; }
.price-note { font-size: 12px; color: #bbb; }

/* ===== 关于页 ===== */
.about-full { padding: 80px 0; }
.about-section { margin-bottom: 80px; }
.about-section h2 { font-size: 32px; font-weight: 700; color: #1a1a1a; margin-bottom: 24px; text-align: center; }
.about-section p { font-size: 16px; color: #555; line-height: 2; max-width: 800px; margin: 0 auto 20px; text-align: center; }
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.cert-card { background: #f8fafc; border-radius: 16px; padding: 32px; text-align: center; border: 1px solid #eee; }
.cert-card h4 { font-size: 18px; font-weight: 700; color: #0057a8; margin-bottom: 8px; }
.cert-card p { font-size: 13px; color: #999; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 40px; }
.feature-card { background: #fff; border-radius: 20px; padding: 40px 28px; text-align: center; box-shadow: 0 4px 24px rgba(0,0,0,0.06); transition: all 0.3s; }
.feature-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(0,87,168,0.12); }
.feature-icon { width: 80px; height: 80px; border-radius: 50%; margin: 0 auto 24px; display: flex; align-items: center; justify-content: center; }
.icon-letter { width: 80px; height: 80px; border-radius: 50%; background: #0057a8; color: #fff; font-size: 32px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.feature-card h3 { font-size: 22px; font-weight: 700; color: #1a1a1a; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: #777; line-height: 1.7; }

/* ===== 联系页 ===== */
.contact-section { padding: 80px 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; min-width: 0; overflow: hidden; }
.contact-form { background: #f8fafc; border-radius: 24px; padding: 48px; }
.contact-form h2 { font-size: 28px; font-weight: 700; margin-bottom: 32px; color: #1a1a1a; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; color: #555; margin-bottom: 8px; font-weight: 500; white-space: nowrap; }
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1px solid #ddd; border-radius: 12px;
  font-size: 15px; font-family: inherit; transition: 0.3s;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: #0057a8; box-shadow: 0 0 0 3px rgba(0,87,168,0.1); }
.form-group textarea { height: 120px; resize: vertical; }
.contact-info h2 { font-size: 28px; font-weight: 700; margin-bottom: 32px; color: #1a1a1a; }
.contact-info { min-width: 0; }
.contact-info .contact-item > div { min-width: 0; }
.contact-info .contact-item p { white-space: nowrap; overflow: visible; }
.contact-item { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 28px; }
.contact-item .icon { font-size: 28px; }
..contact-item h4 { font-size: 16px; font-weight: 600; color: #1a1a1a; margin-bottom: 4px; white-space: nowrap; }
.contact-item p { font-size: 14px; color: #777; white-space: nowrap; }

/* ===== 招商页面 ===== */
.level-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 40px; }
.level-card { background: #fff; border-radius: 20px; padding: 32px 24px; box-shadow: 0 4px 24px rgba(0,0,0,0.06); position: relative; overflow: hidden; transition: all 0.3s; }
.level-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,87,168,0.12); }
.level-card-highlight { background: #0057a8; color: #fff; }
.level-badge { display: inline-block; background: #0057a8; color: #fff; padding: 4px 14px; border-radius: 20px; font-size: 12px; font-weight: 700; margin-bottom: 16px; letter-spacing: 1px; }
.level-card-highlight .level-badge { background: rgba(255,255,255,0.2); }
.level-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.level-entry { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.level-label { font-size: 13px; color: #888; }
.level-card-highlight .level-label { color: rgba(255,255,255,0.7); }
.level-price { font-size: 22px; font-weight: 800; color: #0057a8; }
.level-card-highlight .level-price { color: #fff; }
.level-target { font-size: 12px; color: #999; margin-bottom: 16px; }
.level-features { list-style: none; margin-bottom: 20px; }
.level-features li { font-size: 13px; color: #666; line-height: 1.8; padding-left: 16px; position: relative; }
.level-features li::before { content: ""; position: absolute; left: 0; top: 10px; width: 5px; height: 5px; background: #0057a8; border-radius: 50%; }
.level-card-highlight .level-features li { color: rgba(255,255,255,0.85); }
.level-card-highlight .level-features li::before { background: rgba(255,255,255,0.5); }
.level-rebate { font-size: 14px; font-weight: 700; color: #e07b00; padding-top: 12px; border-top: 1px solid #eee; }
.level-card-highlight .level-rebate { color: #FFD700; border-top-color: rgba(255,255,255,0.2); }
.rebate-table { max-width: 800px; margin: 40px auto 0; border-radius: 16px; overflow: hidden; box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.rebate-header, .rebate-row { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; }
.rebate-header { background: #0057a8; color: #fff; padding: 16px 24px; font-size: 14px; font-weight: 700; text-align: center; }
.rebate-row { background: #fff; padding: 16px 24px; border-bottom: 1px solid #eee; text-align: center; }
.rebate-row:last-child { border-bottom: none; }
.rebate-row span { display: flex; align-items: center; justify-content: center; font-size: 15px; color: #555; }
.rebate-row .rebate-val { font-weight: 700; color: #e07b00; font-size: 18px; }
.rebate-note { text-align: center; font-size: 13px; color: #999; margin-top: 20px; }
.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 40px; }
.support-card { background: #fff; border-radius: 16px; padding: 36px 28px; text-align: center; box-shadow: 0 4px 20px rgba(0,0,0,0.05); transition: all 0.3s; }
.support-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,87,168,0.1); }
.support-icon { font-size: 40px; margin-bottom: 16px; }
.support-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; color: #1a1a1a; }
.support-card p { font-size: 14px; color: #777; line-height: 1.7; }
.steps-grid { display: flex; align-items: center; justify-content: center; gap: 0; margin-top: 48px; }
.step-item { text-align: center; max-width: 200px; }
.step-num { width: 64px; height: 64px; border-radius: 50%; background: #0057a8; color: #fff; font-size: 22px; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.step-item h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: #1a1a1a; }
.step-item p { font-size: 13px; color: #888; line-height: 1.6; }
.step-arrow { font-size: 28px; color: #ccc; padding: 0 20px; margin-top: -30px; }

/* ===== 页脚 ===== */
.footer { background: #0a1f3c; color: rgba(255,255,255,0.6); padding: 64px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: 13px; line-height: 1.9; }
.footer-col h4 { font-size: 12px; font-weight: 700; color: #fff; margin-bottom: 20px; letter-spacing: 1px; }
.footer-col ul li { margin-bottom: 10px; white-space: nowrap; }
.footer-col ul li a { font-size: 13px; color: rgba(255,255,255,0.5); white-space: nowrap; }
.footer-col ul li a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 28px; text-align: center; font-size: 12px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .features-4col { grid-template-columns: repeat(2, 1fr); }
  .feat-item:nth-child(2) { border-right: none; }
  .feat-item:nth-child(3) { border-right: 1px solid #eee; }
  .preview-inner { flex-direction: column; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid { grid-template-columns: 1fr; }
  .level-grid { grid-template-columns: repeat(2, 1fr); }
  .support-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .nav-menu { display: none; }
  .mobile-menu-btn { display: block; }
  .features-4col { grid-template-columns: 1fr; }
  .feat-item { border-right: none; border-bottom: 1px solid #eee; }
  .feat-item:last-child { border-bottom: none; }
  .statement-inner { flex-direction: column; gap: 24px; }
  .statement-line { display: none; }
  .cta-inner { flex-direction: column; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .level-grid { grid-template-columns: 1fr; }
  .steps-grid { flex-direction: column; gap: 24px; }
  .step-arrow { transform: rotate(90deg); padding: 0; }
  .support-grid { grid-template-columns: 1fr; }
  .product-detail { flex-direction: column; }
  .product-detail:nth-child(even) { flex-direction: column; }
  .contact-grid { grid-template-columns: 1fr; }
  .page-header h1 { font-size: 36px; }
  .hero-btns { flex-direction: column; align-items: center; }
}

/* ===== 抖音本地生活 ===== */
.douyin-split { display: flex; align-items: stretch; gap: 0; margin: 60px 0; }
.douyin-col {
  flex: 1; border-radius: 24px; padding: 40px; position: relative;
}
.douyin-head { background: linear-gradient(135deg, #003d7a, #0057a8); color: #fff; }
.douyin-agent { background: linear-gradient(135deg, #f0f4f8, #e8f4fd); color: #1a1a1a; }
.douyin-badge {
  display: inline-block; padding: 6px 16px; border-radius: 20px; font-size: 12px;
  font-weight: 700; margin-bottom: 16px; letter-spacing: 1px;
}
.douyin-head .douyin-badge { background: rgba(255,255,255,0.2); color: #fff; }
.douyin-agent .douyin-badge { background: #0057a8; color: #fff; }
.douyin-col h3 { font-size: 24px; font-weight: 800; margin-bottom: 20px; }
.douyin-col ul { list-style: none; }
.douyin-col ul li { font-size: 15px; line-height: 2; }
.douyin-head ul li { color: rgba(255,255,255,0.9); }
.douyin-agent ul li { color: #555; }
.douyin-arrow {
  display: flex; align-items: center; justify-content: center;
  font-size: 36px; color: #ccc; padding: 0 24px; flex-shrink: 0;
}
.douyin-profits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.profit-item {
  text-align: center; padding: 32px 24px; background: #f8fafc;
  border-radius: 16px; border: 1px solid #eee;
}
.profit-icon { font-size: 36px; margin-bottom: 12px; }
.profit-item h4 { font-size: 18px; font-weight: 700; color: #0057a8; margin-bottom: 8px; }
.profit-item p { font-size: 14px; color: #666; line-height: 1.8; }
.douyin-conditions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.condition-tag {
  padding: 10px 24px; background: #0057a8; color: #fff;
  border-radius: 24px; font-size: 14px; font-weight: 600;
}