/* =========================================================
   智联设备循环 · 全国设备回收  —  站点样式
   ========================================================= */
:root {
  --navy: #0a4d7a;
  --navy-dark: #083a5c;
  --blue: #0e6db3;
  --green: #16a34a;
  --green-soft: #dcfce7;
  --orange: #f97316;
  --orange-dark: #ea580c;
  --ink: #15222e;
  --muted: #5b6b7b;
  --line: #e5ebf2;
  --bg: #f5f8fb;
  --white: #ffffff;
  --radius: 16px;
  --shadow-sm: 0 1px 3px rgba(13, 35, 57, .08);
  --shadow-md: 0 10px 30px rgba(13, 35, 57, .10);
  --font: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 78px; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img, svg { display: block; max-width: 100%; }
.container { width: min(1140px, 100% - 40px); margin-inline: auto; }
.section { padding: 84px 0; }
.section-alt { background: var(--bg); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { display: flex; align-items: center; gap: 24px; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { width: 44px; height: 44px; flex: none; }
.brand-text { font-size: 19px; font-weight: 700; color: var(--navy); line-height: 1.15; display: flex; flex-direction: column; }
.brand-text small { font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: 2px; }
.main-nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.main-nav a { font-size: 15px; color: #33485c; font-weight: 500; transition: color .2s; }
.main-nav a:hover { color: var(--blue); }
.main-nav .nav-cta { color: var(--orange); font-weight: 600; }
.header-tel {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--navy); color: #fff; font-weight: 600; font-size: 15px;
  padding: 10px 16px; border-radius: 999px; white-space: nowrap; transition: background .2s;
}
.header-tel:hover { background: var(--blue); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--navy); border-radius: 2px; transition: .3s; }

/* ---------- 首屏 ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(rgba(4, 22, 38, .72), rgba(4, 22, 38, .82)), url('../assets/hero-bg.jpg') center / cover no-repeat;
  padding: 110px 0 130px;
}
.hero-overlay {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 85% 15%, rgba(74, 222, 128, .22), transparent 40%),
    radial-gradient(circle at 10% 90%, rgba(249, 115, 22, .16), transparent 45%);
}
.hero-inner { position: relative; text-align: center; max-width: 820px; margin-inline: auto; }
.hero-eyebrow { display: inline-block; font-size: 14px; letter-spacing: 2px; color: #bfe9d2; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18); padding: 6px 16px; border-radius: 999px; margin-bottom: 22px; }
.hero h1 { font-size: clamp(32px, 5.4vw, 54px); line-height: 1.2; font-weight: 800; letter-spacing: 1px; }
.hero h1 .hl { color: #4ade80; }
.hero-sub { font-size: clamp(15px, 2.2vw, 18px); color: #d7e6f3; margin: 20px 0 34px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-points { list-style: none; display: flex; gap: 26px; justify-content: center; flex-wrap: wrap; margin-top: 40px; }
.hero-points li { font-size: 14px; color: #cfe3f3; display: flex; align-items: center; gap: 8px; }
.hero-points li::before { content: "✓"; display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--green); color: #fff; font-size: 12px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-weight: 600; font-size: 16px; padding: 14px 30px; border-radius: 999px; transition: transform .2s, box-shadow .2s, background .2s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--orange); color: #fff; box-shadow: 0 8px 22px rgba(249, 115, 22, .35); }
.btn-primary:hover { background: var(--orange-dark); box-shadow: 0 12px 28px rgba(249, 115, 22, .45); }
.btn-ghost { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.35); }
.btn-ghost:hover { background: rgba(255,255,255,.2); }

/* ---------- 数据条 ---------- */
.stats { background: var(--white); border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 34px 0; }
.stat { text-align: center; }
.stat strong { display: block; font-size: 28px; font-weight: 800; color: var(--navy); }
.stat span { font-size: 14px; color: var(--muted); }

/* ---------- 段落通用 ---------- */
.section-head { text-align: center; max-width: 680px; margin: 0 auto 50px; }
.section-tag { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 2px; color: var(--blue); background: #e7f2fb; padding: 5px 14px; border-radius: 999px; margin-bottom: 14px; }
.section-tag.light { color: #bfe9d2; background: rgba(255,255,255,.12); }
.section-head h2 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; color: var(--navy); }
.section-head p { color: var(--muted); margin-top: 14px; font-size: 16px; }
.section-head.light h2 { color: #fff; }
.section-head.light p { color: #c9dcea; }

/* ---------- 业务卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: #cfe0ee; }
.card-icon { font-size: 38px; margin-bottom: 16px; color: var(--blue); }
.card-icon svg { display: block; }
.card h3 { font-size: 19px; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

/* ---------- 为什么选择我们 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.why-item { background: var(--white); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); border: 1px solid var(--line); }
.why-num { font-size: 30px; font-weight: 800; color: #d3e3f1; margin-bottom: 10px; }
.why-item h3 { font-size: 18px; color: var(--navy); margin-bottom: 8px; }
.why-item p { color: var(--muted); font-size: 15px; }

/* ---------- 回收流程 ---------- */
.process { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; counter-reset: step; }
.process li { text-align: center; position: relative; padding: 26px 16px 22px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); }
.process-step {
  display: grid; place-items: center; width: 44px; height: 44px; margin: 0 auto 14px;
  background: var(--green); color: #fff; font-weight: 700; font-size: 20px; border-radius: 50%;
  box-shadow: 0 6px 14px rgba(22, 163, 74, .3);
}
.process li h3 { font-size: 16px; color: var(--navy); margin-bottom: 6px; }
.process li p { font-size: 13px; color: var(--muted); }
.process-cta { text-align: center; margin-top: 40px; }

/* ---------- 关于我们 ---------- */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; align-items: center; }
.about-text h2 { font-size: clamp(26px, 3.4vw, 34px); color: var(--navy); margin-bottom: 16px; }
.about-text p { color: var(--muted); margin-bottom: 14px; }
.about-list { list-style: none; margin-top: 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; }
.about-list li { display: flex; align-items: center; gap: 8px; font-size: 15px; color: #33485c; }
.about-list li::before { content: "✓"; color: var(--green); font-weight: 700; }
.about-card { background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%); border-radius: var(--radius); padding: 6px; box-shadow: var(--shadow-md); }
.about-card-inner { border: 1px dashed rgba(255,255,255,.4); border-radius: 12px; padding: 40px 30px; text-align: center; color: #fff; }
.about-card-inner strong { display: block; font-size: 16px; color: #bfe9d2; margin-bottom: 8px; }
.about-card-inner a { display: block; font-size: 30px; font-weight: 800; letter-spacing: 1px; }
.about-card-inner span { display: block; margin-top: 10px; font-size: 13px; color: #c9dcea; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 800px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--white); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 18px 22px; font-weight: 600; color: var(--navy);
  display: flex; justify-content: space-between; align-items: center; font-size: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 22px; color: var(--blue); transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 22px 20px; color: var(--muted); font-size: 15px; }

/* ---------- 联系我们 ---------- */
.section-contact { background: linear-gradient(135deg, #083a5c, #0a4d7a); }
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.contact-card {
  display: block; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius); padding: 34px 26px; text-align: center; color: #fff;
  transition: background .25s, transform .25s;
}
.contact-card:hover { background: rgba(255,255,255,.14); transform: translateY(-4px); }
.contact-icon { font-size: 36px; margin-bottom: 14px; }
.contact-card h3 { font-size: 17px; color: #bfe9d2; margin-bottom: 10px; }
.contact-val { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.contact-val.small { font-size: 18px; font-weight: 600; line-height: 1.5; }
.contact-card span { font-size: 13px; color: #c9dcea; }
.contact-qr { width: 150px; height: 150px; margin: 0 auto 12px; border-radius: 10px; object-fit: cover; background: #fff; padding: 4px; box-shadow: 0 2px 8px rgba(0,0,0,.15); }

/* ---------- 页脚 ---------- */
.site-footer { background: #082f4a; color: #b9cfdf; }
.footer-inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 54px 0 40px; }
.footer-name { font-size: 19px; font-weight: 700; color: #fff; }
.footer-brand p { font-size: 14px; margin-top: 10px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a:hover { color: #fff; }
.footer-contact a { font-size: 22px; font-weight: 700; color: #4ade80; }
.footer-contact p { font-size: 14px; margin-top: 8px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding: 20px 0; font-size: 13px; color: #87a3b8; }
.footer-icp { color: #6b89a1; }

/* ---------- 悬浮拨号 ---------- */
.float-tel {
  position: fixed; right: 20px; bottom: 22px; z-index: 90;
  width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center;
  background: var(--orange); color: #fff; box-shadow: 0 10px 24px rgba(249,115,22,.45);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(249,115,22,.5); }
  70% { box-shadow: 0 0 0 16px rgba(249,115,22,0); }
  100% { box-shadow: 0 0 0 0 rgba(249,115,22,0); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .cards, .why-grid, .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .section { padding: 60px 0; }
  .hero { padding: 80px 0 100px; }
  .nav-wrap { height: 64px; }
  .header-tel { display: none; }
  .nav-toggle { display: flex; margin-left: auto; }
  .main-nav {
    position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: stretch;
    gap: 0; background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md);
    padding: 8px 20px 18px; transform: translateY(-120%); transition: transform .3s; margin-left: 0;
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { padding: 13px 4px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .main-nav a:last-child { border-bottom: 0; }
  .cards, .why-grid, .stats-grid, .contact-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .about-list { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 26px; }
  .footer-bottom .container { justify-content: center; text-align: center; }
  .hero-points { gap: 14px; }
}

/* ---------- 滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-tel { animation: none; }
}

/* ========== 产品实拍 ========== */
.gallery-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; max-width: 680px; margin: 0 auto; }
.gallery-item { display: block; border-radius: 12px; overflow: hidden; aspect-ratio: 16 / 9; background: #eef2f6; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.gallery-item:hover img { transform: scale(1.06); }

/* 图片预览灯箱 */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(0,0,0,.92); display: none; align-items: center; justify-content: center; padding: 24px; }
.lightbox.open { display: flex; }
.lightbox-img { max-width: 92vw; max-height: 86vh; border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.lightbox-close { position: absolute; top: 18px; right: 26px; background: rgba(255,255,255,.12); border: 0; color: #fff; font-size: 40px; width: 48px; height: 48px; border-radius: 50%; cursor: pointer; line-height: 1; }
.lightbox-close:hover { background: rgba(255,255,255,.25); }

@media (max-width: 960px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 720px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
/* ---------- 微信二维码浮窗 ---------- */
.qr-float {
  position: fixed; left: 18px; bottom: 18px; z-index: 120;
  width: 172px; background: #fff; border-radius: 14px;
  box-shadow: 0 12px 36px rgba(13, 35, 57, .30);
  border: 1px solid var(--line);
  padding: 12px; text-align: center;
}
.qr-float-close {
  position: absolute; top: -11px; right: -11px;
  width: 26px; height: 26px; border-radius: 50%;
  background: #334155; color: #fff; border: 0;
  font-size: 15px; line-height: 1; cursor: pointer;
  display: grid; place-items: center;
}
.qr-float-close:hover { background: #0f172a; }
.qr-float-head { font-size: 14px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.qr-float-img { width: 100%; border-radius: 8px; display: block; }
.qr-float-tip { margin-top: 8px; font-size: 12px; color: var(--muted); }
@media (max-width: 720px) {
  .qr-float { width: 140px; padding: 10px; left: 10px; bottom: 10px; }
}


/* ---------- 面包屑（落地页） ---------- */
.breadcrumb { background: #eef4fa; border-bottom: 1px solid var(--line); }
.breadcrumb .container { display: flex; align-items: center; gap: 8px; padding: 13px 0; font-size: 14px; color: var(--muted); flex-wrap: wrap; }
.breadcrumb a { color: var(--blue); }
.breadcrumb a:hover { color: var(--navy); text-decoration: underline; }
.breadcrumb .sep { color: #9db1c2; }

/* ---------- 卡片内链接（首页/落地页） ---------- */
.card h3 a { color: inherit; transition: color .2s; }
.card h3 a:hover { color: var(--blue); }
.card-more { display: inline-block; margin-top: 12px; font-size: 14px; font-weight: 600; color: var(--orange); }
.card-more:hover { color: var(--orange-dark); }

/* ---------- 相关回收业务（落地页内链） ---------- */
.related-list { list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.related-list a {
  display: flex; flex-direction: column; gap: 6px; height: 100%;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px; transition: transform .25s, box-shadow .25s, border-color .25s;
}
.related-list a:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #cfe0ee; }
.related-list strong { font-size: 17px; color: var(--navy); }
.related-list span { font-size: 14px; color: var(--muted); }
@media (max-width: 720px) { .related-list { grid-template-columns: 1fr; } }