/* ==========================================================================
   多多集运系统 — 官网样式
   橙红暖色系 · 活力亲民
   ========================================================================== */

:root {
  --primary: #f97316;
  --primary-dark: #c2410c;
  --primary-light: #fb923c;
  --accent: #ef4444;
  --gold: #fbbf24;
  --bg: #ffffff;
  --bg-soft: #fff7ed;
  --bg-tint: #fff1e6;
  --text: #1f2937;
  --text-muted: #6b7280;
  --line: #fde8d7;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(249, 115, 22, 0.08);
  --shadow: 0 10px 30px rgba(249, 115, 22, 0.12);
  --shadow-lg: 0 24px 60px rgba(249, 115, 22, 0.18);
  --maxw: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* 顶部导航 */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.96); backdrop-filter: blur(8px); box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: var(--primary-dark); letter-spacing: -0.5px; }
.brand .logo-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; display: grid; place-items: center; font-size: 20px; font-weight: 800;
  box-shadow: 0 6px 16px rgba(249, 115, 22, 0.3);
}
.brand em { font-style: normal; color: var(--primary); }
.main-nav > ul { display: flex; align-items: center; gap: 4px; }
.main-nav > ul > li > a {
  display: flex; align-items: center; gap: 5px;
  padding: 10px 14px; font-size: 15px; font-weight: 500; color: var(--text);
  border-radius: 10px; transition: .2s;
}
.main-nav > ul > li > a:hover, .main-nav > ul > li > a.active { color: var(--primary); background: var(--bg-soft); }
.header-cta {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; padding: 10px 20px; border-radius: 99px; font-weight: 600; font-size: 14px;
  box-shadow: 0 6px 18px rgba(249, 115, 22, .3); transition: .2s;
}
.header-cta:hover { transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: none; font-size: 26px; cursor: pointer; color: var(--text); }

/* Hero */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(1200px 500px at 15% -10%, #fed7aa, transparent),
              linear-gradient(135deg, #fff7ed 0%, #ffedd5 50%, #fee2e2 100%);
  padding: 76px 0 64px;
}
.hero-inner { display: flex; flex-direction: column; align-items: center; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--primary-dark); font-size: 13px; font-weight: 600;
  padding: 8px 18px; border-radius: 99px; box-shadow: var(--shadow-sm); margin-bottom: 22px;
}
.hero h1 { font-size: 46px; line-height: 1.25; font-weight: 800; letter-spacing: -1px; margin-bottom: 20px; }
.hero h1 span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { font-size: 17px; color: var(--text-muted); max-width: 720px; margin: 0 auto 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 13px 26px; border-radius: 99px; font-size: 15px; font-weight: 600; cursor: pointer; border: none; transition: .2s;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; box-shadow: 0 8px 22px rgba(249,115,22,.32); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-outline { background: #fff; color: var(--primary-dark); border: 1.5px solid #fed7aa; }
.btn-outline:hover { border-color: var(--primary); }
.btn-navy { background: var(--primary-dark); color: #fff; }
.btn-block { width: 100%; justify-content: center; }

/* 功能标签云 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; max-width: 820px; margin: 34px auto 0; }
.tag-cloud span {
  background: #fff; color: var(--primary-dark); font-size: 13px; font-weight: 500;
  padding: 8px 16px; border-radius: 99px; border: 1px solid #fed7aa; box-shadow: var(--shadow-sm);
}

/* 区块通用 */
.section { padding: 72px 0; }
.section-soft { background: var(--bg-soft); }
.sec-head { text-align: center; max-width: 700px; margin: 0 auto 44px; }
.sec-head.left { text-align: left; margin: 0 0 22px; }
.kicker {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 1px;
  color: var(--primary); text-transform: uppercase; margin-bottom: 10px;
}
.sec-head h2 { font-size: 32px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 12px; }
.sec-head p { color: var(--text-muted); font-size: 15px; }

/* 数字背书 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.stat-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 20px; text-align: center; transition: .2s;
}
.stat-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.stat-card b { display: block; font-size: 40px; font-weight: 800; color: var(--primary); line-height: 1; margin-bottom: 8px; }
.stat-card span { color: var(--text-muted); font-size: 14px; }

/* 营销功能墙 */
.feat-wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.feat-chip {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px 14px; text-align: center; font-weight: 600; font-size: 14px; transition: .2s;
}
.feat-chip:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

/* 业务流程 */
.flow { display: grid; grid-template-columns: repeat(7, 1fr); gap: 12px; }
.flow-step {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 14px; text-align: center; position: relative;
}
.flow-step .num {
  width: 34px; height: 34px; margin: 0 auto 12px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
  display: grid; place-items: center; font-weight: 700;
}
.flow-step b { display: block; font-size: 15px; margin-bottom: 6px; }
.flow-step p { font-size: 12.5px; color: var(--text-muted); line-height: 1.5; }

/* 核心功能 */
.func-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.func-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: .2s;
}
.func-card:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-3px); }
.func-card .icon {
  width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center;
  font-size: 26px; background: var(--bg-soft); margin-bottom: 18px;
}
.func-card h3 { font-size: 18px; margin-bottom: 10px; }
.func-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 14px; }
.func-card .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.func-card .tags span { background: var(--bg-soft); color: var(--primary-dark); font-size: 12px; padding: 4px 10px; border-radius: 6px; }

/* 价格 */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.price-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; position: relative; transition: .2s;
}
.price-card:hover { box-shadow: var(--shadow); }
.price-card.featured { border-color: var(--primary); box-shadow: var(--shadow); transform: scale(1.02); }
.price-card .badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
  font-size: 13px; font-weight: 600; padding: 4px 16px; border-radius: 99px;
}
.price-card h3 { font-size: 20px; margin-bottom: 4px; }
.price-card .ptype { color: var(--text-muted); font-size: 13px; margin-bottom: 18px; }
.price-card .amount { font-size: 40px; font-weight: 800; color: var(--primary); }
.price-card .amount small { font-size: 18px; }
.price-card .amount-note { color: var(--text-muted); font-size: 13px; margin: 6px 0 20px; }
.price-card ul li { padding: 9px 0; border-bottom: 1px dashed #f5e0cc; font-size: 14px; color: var(--text); }
.price-card ul li::before { content: "✓"; color: var(--primary); font-weight: 700; margin-right: 8px; }

/* FAQ */
.faq { max-width: 760px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 12px; overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  padding: 18px 22px; font-size: 15.5px; font-weight: 600; color: var(--text);
  display: flex; align-items: center; justify-content: space-between;
}
.faq-q .ic { color: var(--primary); font-size: 20px; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { padding: 0 22px 18px; color: var(--text-muted); font-size: 14.5px; }

/* 关于 */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.about-copy h2 { font-size: 26px; margin-bottom: 16px; }
.about-copy p { color: var(--text-muted); margin-bottom: 14px; }
.value-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.value-card { background: var(--bg-soft); border-radius: var(--radius-sm); padding: 18px; }
.value-card b { display: block; color: var(--primary-dark); margin-bottom: 6px; }
.value-card p { font-size: 13.5px; color: var(--text-muted); }

/* 联系 */
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.contact-cards { display: flex; flex-direction: column; gap: 14px; }
.contact-card {
  display: flex; gap: 16px; align-items: center; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 20px;
}
.contact-card .icon { font-size: 28px; }
.contact-card b { display: block; font-size: 15px; }
.contact-card p { color: var(--text-muted); font-size: 13px; }
.contact-card .hl { color: var(--primary); font-weight: 700; font-size: 16px; }
.contact-qr { text-align: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.contact-qr img { width: 180px; margin: 0 auto 14px; border-radius: 10px; }
.contact-qr b { display: block; margin-bottom: 6px; }
.contact-qr p { color: var(--text-muted); font-size: 13px; }

/* 资讯 */
.news-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin-top: 8px; }
.news-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 20px; transition: .2s; }
.news-item:hover { box-shadow: var(--shadow); border-color: #fde0c0; }
.news-item a { font-size: 15px; font-weight: 600; color: var(--text); line-height: 1.5; display: block; margin-bottom: 8px; }
.news-item a:hover { color: var(--primary); }
.news-item span { font-size: 12px; color: #999; }
.news-more { text-align: center; margin-top: 24px; }

/* 页脚 */
.footer { background: #2a1a10; color: #d8c7b8; padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; padding-bottom: 40px; }
.footer .brand { color: #fff; margin-bottom: 14px; }
.footer p { font-size: 13.5px; line-height: 1.8; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer ul li { margin-bottom: 9px; }
.footer ul li a { font-size: 13.5px; color: #d8c7b8; }
.footer ul li a:hover { color: var(--primary-light); }
.footer .hl { color: var(--primary-light); font-weight: 600; }
.footer-qr img { width: 100px; border-radius: 8px; margin-bottom: 8px; }
.footer-qr span { font-size: 12px; color: #b7a396; }
.footer-bottom { border-top: 1px solid #3d2b1e; padding: 18px 0; text-align: center; font-size: 13px; color: #9c8a7a; }
.footer-bottom a { color: #c9a97f; }

/* 悬浮微信 */
.float-wx { position: fixed; right: 18px; bottom: 60px; z-index: 200; }
.wx-fab {
  width: 54px; height: 54px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; display: grid; place-items: center; cursor: pointer; font-size: 12px; font-weight: 700;
  box-shadow: 0 8px 20px rgba(249,115,22,.4); text-align: center; line-height: 1.3;
}
.wx-pop {
  position: absolute; bottom: 66px; right: 0; background: #fff; border-radius: 14px;
  padding: 16px; width: 190px; text-align: center; box-shadow: var(--shadow-lg);
  display: none;
}
.wx-pop.show { display: block; }
.wx-pop img { width: 140px; margin: 0 auto 10px; border-radius: 8px; }
.wx-pop b { display: block; font-size: 14px; margin-bottom: 4px; }
.wx-pop p { font-size: 12px; color: var(--text-muted); }

/* 响应式 */
@media (max-width: 960px) {
  .hero h1 { font-size: 34px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .func-grid { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: 1fr; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .main-nav { position: fixed; top: 68px; left: 0; right: 0; background: #fff; max-height: 0; overflow: hidden; transition: max-height .3s; box-shadow: var(--shadow); }
  .main-nav.open { max-height: 70vh; overflow-y: auto; }
  .main-nav > ul { flex-direction: column; padding: 10px 0; }
  .main-nav > ul > li > a { padding: 12px 20px; }
  .header-cta { display: none; }
}
.nav-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.3); z-index: 99; display: none; }
.nav-overlay.show { display: block; }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s, transform .6s; }
.reveal.in { opacity: 1; transform: none; }

/* 咨询弹窗 */
.modal-overlay{position:fixed;inset:0;background:rgba(15,23,42,.55);display:none;align-items:center;justify-content:center;z-index:300;padding:20px}
.modal-overlay.show{display:flex}
.modal{background:#fff;border-radius:16px;padding:32px 28px;width:360px;max-width:92vw;text-align:center;position:relative;box-shadow:0 24px 60px rgba(0,0,0,.2)}
.modal-close{position:absolute;top:14px;right:14px;background:none;border:none;font-size:18px;cursor:pointer;color:#9ca3af;line-height:1}
.modal-close:hover{color:var(--primary)}
.modal h3{font-size:20px;margin-bottom:6px}
.modal .sub{color:var(--text-muted);font-size:14px;margin-bottom:18px}
.modal-qr{width:170px;margin:0 auto 18px;border-radius:10px}
.modal-row{display:flex;justify-content:center;gap:12px;margin:8px 0;font-size:14px}
.modal-row span{color:var(--text-muted)}
.modal-row b{color:var(--text)}
.modal .btn-block{margin-top:18px}