/* 杰力达金属 · 首页深蓝大气风格 */
:root {
  --bg: #081120; --bg-2: #0c1a30; --bg-3: #12233e;
  --card: rgba(18, 36, 68, 0.62);
  --line: rgba(120, 165, 255, 0.2);
  --blue: #2f7bff; --blue-2: #57a0ff;
  --cyan: #6fd3ff; --gold: #ffc24d;
  --text: #eef4ff; --muted: #9db3d6;
  --radius: 16px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.65; }
img { max-width: 100%; }
a { color: var(--cyan); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: #fff; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 22px; }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--blue); color: #fff; padding: 10px 16px; z-index: 99; }
.skip-link:focus { left: 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 12px; padding: 13px 26px; font-weight: 700; font-size: 1rem; cursor: pointer; border: 1px solid transparent; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--blue), var(--blue-2)); color: #fff !important; box-shadow: 0 10px 26px rgba(47, 123, 255, 0.35); }
.btn-primary:hover { box-shadow: 0 14px 32px rgba(47, 123, 255, 0.5); }
.btn-outline { background: transparent; color: var(--cyan) !important; border-color: rgba(111, 211, 255, 0.5); }
.btn-outline:hover { background: rgba(111, 211, 255, 0.1); }
.btn-lg { padding: 15px 32px; font-size: 1.05rem; }
.btn-block { width: 100%; }
.btn-gold { background: linear-gradient(135deg, #ffb62e, #ffd98a); color: #4a2f00 !important; box-shadow: 0 10px 26px rgba(255, 194, 77, 0.35); }
.btn-gold:hover { box-shadow: 0 14px 32px rgba(255, 194, 77, 0.5); }
.topbar { background: #060c18; border-bottom: 1px solid rgba(120, 165, 255, 0.12); font-size: 0.85rem; color: var(--muted); }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-top: 8px; padding-bottom: 8px; flex-wrap: wrap; }
.topbar a { color: var(--gold); font-weight: 700; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(8, 17, 32, 0.88); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(120, 165, 255, 0.14); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand img { width: 38px; height: 38px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { color: #fff; font-weight: 800; font-size: 1.08rem; letter-spacing: 0.02em; }
.brand-sub { color: var(--muted); font-size: 0.7rem; letter-spacing: 0.18em; }
.nav-list { list-style: none; display: flex; gap: 6px; }
.nav-list a { color: var(--text); padding: 8px 14px; border-radius: 10px; font-weight: 600; font-size: 0.96rem; }
.nav-list a:hover { color: var(--cyan); background: rgba(111, 211, 255, 0.08); }
.nav-list a.active { color: var(--cyan); background: rgba(111, 211, 255, 0.12); }
.nav-cta { padding: 10px 20px; font-size: 0.92rem; margin-left: 10px; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; transition: 0.25s; }
.hero { position: relative; overflow: hidden; color: #fff; }
.hero-bg { position: absolute; inset: 0; background-image: linear-gradient(180deg, rgba(14, 12, 10, 0.78) 0%, rgba(22, 18, 14, 0.55) 45%, rgba(10, 8, 10, 0.88) 100%), url("../images/ai-hero-02.jpg"); background-size: cover; background-position: center; background-repeat: no-repeat; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(12, 10, 8, 0.5) 0%, rgba(18, 14, 12, 0.3) 45%, rgba(20, 16, 12, 0.18) 100%); }
.hero::after { content: ""; position: absolute; width: 560px; height: 560px; right: -160px; top: -160px; border-radius: 50%; background: radial-gradient(circle, rgba(47, 123, 255, 0.28), transparent 65%); pointer-events: none; }
.hero-inner { position: relative; display: flex; flex-direction: column; align-items: center; text-align: center; padding-top: 44px; padding-bottom: 40px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(111, 211, 255, 0.12); border: 1px solid rgba(111, 211, 255, 0.35); padding: 7px 16px; border-radius: 999px; font-size: 0.86rem; color: var(--cyan); margin-bottom: 20px; }
.hero-badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 4px rgba(255, 194, 77, 0.25); }
.hero h1 { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 900; line-height: 1.28; margin-bottom: 22px; letter-spacing: 0.01em; }
.hero h1 .hl { color: var(--cyan); }
.hero-slogan { display: inline-block; color: var(--gold); font-size: 1.06rem; font-weight: 800; letter-spacing: 0.5em; text-indent: 0.5em; margin: -8px 0 10px; }
.hero-slogan-en { display: block; color: rgba(111, 211, 255, 0.85); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.34em; text-indent: 0.34em; margin: 0 0 18px; }
.hero-lead { color: rgba(238, 244, 255, 0.9); font-size: 1.05rem; max-width: 780px; margin: 0 auto 20px; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-bottom: 16px; }
.hero-trust { list-style: none; display: flex; flex-wrap: wrap; gap: 20px; font-size: 0.9rem; color: rgba(238, 244, 255, 0.85); }
.hero-trust { justify-content: center; }
.hero-trust li { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust li::before { content: "✓"; width: 18px; height: 18px; border-radius: 50%; background: var(--blue); color: #fff; font-size: 0.72rem; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; }
.hero-contact { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; margin-top: 8px; font-size: 0.92rem; color: rgba(238, 244, 255, 0.85); }
.hero-contact a { color: var(--gold); font-weight: 700; }
.hc-dot { color: rgba(238, 244, 255, 0.4); }
.hc-wechat { display: inline-flex; align-items: center; gap: 8px; }
.hc-qr { width: 42px; height: 42px; border-radius: 8px; background: #fff; padding: 2px; border: 1px solid rgba(120, 165, 255, 0.4); display: block; position: relative; z-index: 5; transition: transform 0.2s ease; }
.hc-qr:hover { transform: scale(3); transform-origin: bottom center; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5); }
.hero-wall { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 20px auto 0; width: 100%; max-width: 500px; }
.hero-wall .pw-item { aspect-ratio: 4 / 3; border-radius: 10px; }
.hero-wall .pw-item img { width: 100%; height: 100%; object-fit: cover; }
.hero-wall .pw-item figcaption { display: none; }
/* 数据条 */
.stats-strip { background: linear-gradient(120deg, #1a56d6, #2f7bff 50%, #4a93ff); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding-top: 30px; padding-bottom: 30px; text-align: center; }
.stat strong { display: block; font-size: 1.5rem; font-weight: 900; color: #fff; letter-spacing: 0.02em; }
.stat span { font-size: 0.9rem; color: rgba(255, 255, 255, 0.85); }

/* 板块 */
.section { padding: 76px 0; }
.section-dark { background: var(--bg-2); }
.section-light { background: #f2f6ff; color: #0d1a2e; }
.section-head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.section-kicker { display: inline-block; color: var(--cyan); font-weight: 800; letter-spacing: 0.16em; font-size: 0.82rem; margin-bottom: 12px; }
.section-light .section-kicker { color: var(--blue); }
.section-head h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 900; margin-bottom: 14px; }
.section-sub { color: var(--muted); font-size: 0.98rem; }
.section-light .section-sub { color: #5a6b87; }
.section-more { text-align: center; margin-top: 26px; }

/* 回收业务卡片 */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card { background: #fff; border: 1px solid #e2e9f7; border-radius: var(--radius); padding: 30px 26px; box-shadow: 0 10px 30px rgba(13, 42, 102, 0.08); transition: transform 0.28s ease, box-shadow 0.28s ease; }
.card:hover { transform: translateY(-6px); box-shadow: 0 20px 44px rgba(13, 42, 102, 0.16); }
.card-icon { margin-bottom: 16px; }
.card h3 { color: #0d1a2e; margin-bottom: 10px; }
.card h3 a { color: #0d1a2e; }
.card h3 a:hover { color: var(--blue); }
.card p { color: #5a6b87; font-size: 0.93rem; margin-bottom: 16px; }
.card-link { color: var(--blue); font-weight: 700; font-size: 0.92rem; }

/* 现场实拍 */
.showcase-banner { position: relative; border-radius: 22px; overflow: hidden; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5); margin-bottom: 26px; border: 1px solid var(--line); }
.showcase-banner img { width: 100%; height: 380px; object-fit: cover; display: block; }
.showcase-banner::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6, 14, 30, 0.85) 0%, rgba(6, 14, 30, 0.35) 55%, transparent 100%); pointer-events: none; }
.showcase-banner-cap { position: absolute; left: 34px; bottom: 30px; right: 34px; color: #fff; z-index: 2; max-width: 540px; }
.showcase-banner-cap strong { display: block; font-size: clamp(1.3rem, 2.6vw, 1.85rem); font-weight: 900; margin-bottom: 10px; text-shadow: 0 2px 14px rgba(0, 0, 0, 0.5); }
.showcase-banner-cap span { font-size: 0.96rem; color: rgba(238, 244, 255, 0.9); text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.gallery-item { position: relative; border-radius: 16px; overflow: hidden; margin: 0; border: 1px solid var(--line); box-shadow: 0 14px 36px rgba(0, 0, 0, 0.35); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.gallery-item:hover { transform: translateY(-5px); box-shadow: 0 22px 46px rgba(0, 0, 0, 0.5); }
.gallery-item img { width: 100%; height: 240px; object-fit: cover; display: block; transition: transform 0.5s ease; }
.gallery-item:hover img { transform: scale(1.06); }
.gallery-item figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 34px 16px 13px; font-size: 0.93rem; font-weight: 700; color: #fff; background: linear-gradient(transparent, rgba(4, 10, 24, 0.9)); }
.real-more { display: grid; grid-template-columns: repeat(2, minmax(0, 440px)); gap: 26px; justify-content: center; }
.real-more-item { margin: 0; }
.real-more-item img { width: 100%; height: auto; border-radius: 16px; border: 1px solid var(--line); box-shadow: 0 14px 36px rgba(0, 0, 0, 0.35); display: block; }
.real-more-item figcaption { text-align: center; margin-top: 12px; color: var(--muted); font-weight: 700; font-size: 0.94rem; }
  .showcase-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 34px; }
  /* 实景小图墙 */
  .photo-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
  .pw-item { position: relative; margin: 0; border-radius: 12px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35); transition: transform 0.3s ease, box-shadow 0.3s ease; }
  .pw-item:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5); }
  .pw-item img { width: 100%; height: 180px; object-fit: cover; display: block; transition: transform 0.5s ease; }
  .pw-item:hover img { transform: scale(1.08); }
  .pw-item figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 8px 8px; font-size: 0.8rem; font-weight: 700; color: #fff; text-align: center; background: linear-gradient(transparent, rgba(4, 10, 24, 0.85)); }
  
  /* 流程 */
.process { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; position: relative; }
.process li { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 18px 22px; text-align: center; box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25); transition: transform 0.28s ease, box-shadow 0.28s ease; }
.process li:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35); }
.process li:not(:last-child)::after { content: ""; position: absolute; right: -14px; top: 50%; width: 12px; height: 2px; background: var(--blue-2); }
.process span { display: inline-flex; width: 46px; height: 46px; align-items: center; justify-content: center; border-radius: 50%; background: linear-gradient(135deg, var(--blue), var(--blue-2)); color: #fff; font-weight: 800; margin-bottom: 14px; box-shadow: 0 8px 18px rgba(47, 123, 255, 0.4); }
.process h3 { font-size: 1rem; margin-bottom: 8px; }
.process p { color: var(--muted); font-size: 0.88rem; }

/* 为什么选择我们 */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22); transition: transform 0.28s ease, border-color 0.28s ease; }
.feature:hover { transform: translateY(-5px); border-color: rgba(111, 211, 255, 0.5); }
.feature h3 { color: var(--cyan); margin-bottom: 10px; font-size: 1.05rem; }
.feature p { color: var(--muted); font-size: 0.92rem; }

/* 服务范围 */
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.quote { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--blue); border-radius: var(--radius); padding: 26px 24px; margin: 0; }
.quote p { color: var(--text); font-size: 0.95rem; margin-bottom: 14px; }
.quote footer { color: var(--muted); font-size: 0.86rem; }

/* 金属回收 split */
.split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.split-copy h2 { margin-bottom: 16px; font-size: clamp(1.4rem, 2.6vw, 1.9rem); font-weight: 900; }
.split-copy p { color: var(--muted); margin-bottom: 14px; }
.split-copy strong { color: var(--text); }
.split-visual img { width: 100%; height: 400px; object-fit: cover; border-radius: 20px; border: 1px solid var(--line); box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4); }

/* CTA */
.cta-band { background: linear-gradient(120deg, #1450c9, #2f7bff 55%, #57a0ff); padding: 64px 0; text-align: center; }
.cta-inner h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 900; margin-bottom: 14px; }
.cta-inner p { color: rgba(255, 255, 255, 0.9); margin-bottom: 26px; }
.cta-inner .btn-light { background: #fff; color: #1450c9; }
.cta-inner .btn-outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.6); }
.cta-inner .btn-outline-light:hover { background: rgba(255, 255, 255, 0.12); }
.cta-inner .hero-actions { justify-content: center; margin-bottom: 0; }

/* FAQ */
.faq { max-width: 760px; margin: 0 auto; }
.faq details { background: #fff; border: 1px solid #e2e9f7; border-radius: 12px; margin-bottom: 12px; padding: 6px 18px; box-shadow: 0 6px 18px rgba(13, 42, 102, 0.06); }
.faq summary { cursor: pointer; font-weight: 700; color: #0d1a2e; padding: 12px 0; font-size: 1rem; }
.faq details[open] summary { color: var(--blue); }
.faq details p { color: #5a6b87; font-size: 0.94rem; padding: 0 0 14px; }

/* 页脚 */
.site-footer { background: #050b16; border-top: 1px solid rgba(120, 165, 255, 0.12); padding-top: 56px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 40px; }
.footer-col h3 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--muted); }
.footer-col a:hover { color: var(--cyan); }
.footer-about p { color: var(--muted); font-size: 0.92rem; margin-top: 14px; }
.footer-bottom { border-top: 1px solid rgba(120, 165, 255, 0.1); padding: 18px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 0.86rem; color: var(--muted); }
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--cyan); }

/* 返回顶部 */
.to-top { position: fixed; right: 22px; bottom: 26px; width: 46px; height: 46px; border-radius: 50%; border: 0; background: linear-gradient(135deg, var(--blue), var(--blue-2)); color: #fff; font-size: 1.2rem; cursor: pointer; box-shadow: 0 12px 28px rgba(47, 123, 255, 0.4); opacity: 0; visibility: hidden; transform: translateY(10px); transition: 0.3s; z-index: 60; }
.to-top.show { opacity: 1; visibility: visible; transform: none; }

/* 响应式 */
@media (max-width: 960px) {
  .split { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid, .feature-grid, .quote-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .photo-wall { grid-template-columns: repeat(3, 1fr); }
    .process { grid-template-columns: repeat(2, 1fr); }
  .process li:not(:last-child)::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .site-nav { display: none; width: 100%; }
  .site-nav.open { display: block; }
  .header-inner { flex-wrap: wrap; }
  .nav-list { flex-direction: column; gap: 2px; padding: 8px 0; }
  .nav-list a { display: block; }
  .nav-cta { margin: 8px 0 4px; }
  .card-grid, .feature-grid, .quote-grid, .gallery-grid, .real-more, .stats-grid { grid-template-columns: 1fr; }
  .photo-wall { grid-template-columns: repeat(2, 1fr); }
  .pw-item img { height: 130px; }
  .process { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 52px 0; }
  .hero-inner { padding-top: 44px; padding-bottom: 40px; }
  .hero-wall { gap: 6px; margin-top: 20px; max-width: 400px; }
  .showcase-banner img { height: 260px; }
  .gallery-item img { height: 210px; }
  .split-visual img { height: 300px; }
}