/* ============================================================
   正益实业外贸站 · 前台样式 v2（高级感升级）
   设计语言：墨蓝 × 铜金 · 编辑排版 · 克制动效
   ============================================================ */
:root {
  --ink: #0a141d;
  --ink-2: #0e1b26;
  --ink-3: #14242f;
  --paper: #f7f5f1;
  --white: #ffffff;
  --copper: #b97f3e;
  --copper-2: #e0a25e;
  --copper-grad: linear-gradient(120deg, #b97f3e, #e0a25e);
  --text: #22303c;
  --muted: #6b7a88;
  --line: #e6e2da;
  --dark-line: rgba(255, 255, 255, 0.09);
  --shadow: 0 24px 60px -24px rgba(10, 20, 29, 0.32);
  --radius: 16px;
  --font: "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--white); line-height: 1.75; font-size: 16px; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.25s; }
::selection { background: rgba(185, 127, 62, 0.25); }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 28px; }

/* ---------- 顶栏 ---------- */
#topbar { background: var(--ink); color: rgba(255,255,255,0.66); font-size: 13px; border-bottom: 1px solid var(--dark-line); }
.topbar-in { display: flex; justify-content: space-between; align-items: center; height: 40px; }
.tb-item { display: inline-flex; align-items: center; gap: 7px; margin-right: 20px; letter-spacing: 0.3px; transition: color 0.2s; }
a.tb-item:hover { color: var(--copper-2); }
a.tb-item b { color: rgba(255,255,255,0.9); font-weight: 600; letter-spacing: 0.5px; }
.tb-ico { width: 15px; height: 15px; opacity: 0.75; }
.tb-addr { display: inline-block; }
.tb-right { display: flex; align-items: center; gap: 18px; }
.lang-switch a { color: rgba(255,255,255,0.5); padding: 2px 4px; }
.lang-switch a.on { color: var(--copper-2); font-weight: 700; }
.lang-switch i { color: rgba(255,255,255,0.22); font-style: normal; }

/* ---------- 导航 ---------- */
#header { position: sticky; top: 0; z-index: 90; background: rgba(255,255,255,0.92); backdrop-filter: blur(14px) saturate(1.4); border-bottom: 1px solid transparent; transition: box-shadow 0.3s, border-color 0.3s; }
#header.scrolled { border-bottom-color: var(--line); box-shadow: 0 10px 34px -22px rgba(10,20,29,0.35); }
.header-in { display: flex; align-items: center; justify-content: space-between; height: 80px; }
.logo { display: flex; align-items: center; }
.logo img { height: 48px; width: auto; }
#nav { display: flex; align-items: center; gap: 4px; }
#nav a { position: relative; padding: 10px 15px; font-weight: 600; font-size: 14.5px; color: var(--text); letter-spacing: 0.6px; }
#nav a:not(.nav-cta)::after { content: ""; position: absolute; left: 15px; right: 15px; bottom: 4px; height: 2px; background: var(--copper-grad); transform: scaleX(0); transform-origin: left; transition: transform 0.3s var(--ease); }
#nav a:not(.nav-cta):hover::after, #nav a.on::after { transform: scaleX(1); }
#nav a.on { color: var(--copper); }
.nav-cta { margin-left: 14px; padding: 10px 24px !important; border: 1.5px solid var(--copper); border-radius: 999px; color: var(--copper) !important; font-weight: 700 !important; transition: 0.25s var(--ease); }
.nav-cta:hover { background: var(--copper-grad); border-color: transparent; color: #fff !important; box-shadow: 0 8px 22px -10px rgba(185,127,62,0.7); }
#navToggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
#navToggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; transition: 0.25s; }

/* ---------- Hero（视频背景） ---------- */
.hero { position: relative; height: 100vh; min-height: 620px; max-height: 960px; background: var(--ink); overflow: hidden; }
.hero-slides, .slide { position: absolute; inset: 0; }
.slide { opacity: 0; visibility: hidden; transition: opacity 1.1s var(--ease), visibility 1.1s; }
.slide.on { opacity: 1; visibility: visible; }
.slide-img { position: absolute; inset: 0; background-size: cover; background-position: center; transform: scale(1.08); transition: transform 7s linear; }
.slide.on .slide-img { transform: scale(1); }
.slide-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.slide-mask { position: absolute; inset: 0; background:
  linear-gradient(90deg, rgba(10,20,29,0.86) 0%, rgba(10,20,29,0.55) 42%, rgba(10,20,29,0.18) 78%),
  linear-gradient(0deg, rgba(10,20,29,0.55) 0%, rgba(10,20,29,0) 34%); }
.slide-body { position: relative; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 22px; color: #fff; padding-bottom: 4vh; }
.slide-kicker { display: inline-flex; align-items: center; gap: 14px; font-size: 14px; letter-spacing: 5px; text-transform: uppercase; color: var(--copper-2); font-weight: 700; opacity: 0; transform: translateY(26px); transition: 0.8s 0.2s var(--ease); }
.sk-line { width: 46px; height: 2px; background: var(--copper-grad); }
.slide-title { font-size: clamp(34px, 5.4vw, 68px); line-height: 1.12; font-weight: 800; letter-spacing: -0.5px; max-width: 880px; text-shadow: 0 6px 44px rgba(0,0,0,0.4); opacity: 0; transform: translateY(26px); transition: 0.8s 0.38s var(--ease); }
.slide-desc { max-width: 560px; font-size: 16.5px; color: rgba(255,255,255,0.78); line-height: 1.85; opacity: 0; transform: translateY(26px); transition: 0.8s 0.52s var(--ease); }
.slide-btns { display: flex; gap: 14px; flex-wrap: wrap; opacity: 0; transform: translateY(26px); transition: 0.8s 0.66s var(--ease); }
.slide.on .slide-kicker, .slide.on .slide-title, .slide.on .slide-desc, .slide.on .slide-btns { opacity: 1; transform: none; }
.hero-dots { position: absolute; left: 0; right: 0; bottom: 38px; display: flex; justify-content: center; gap: 10px; z-index: 5; }
.hero-dots b { width: 36px; height: 3px; border-radius: 2px; background: rgba(255,255,255,0.3); cursor: pointer; transition: 0.3s; }
.hero-dots b.on { background: var(--copper-2); width: 56px; }
.hero-scroll { position: absolute; left: 42px; bottom: 34px; width: 26px; height: 44px; border: 1.5px solid rgba(255,255,255,0.5); border-radius: 14px; z-index: 5; }
.hero-scroll i { position: absolute; left: 50%; top: 8px; width: 4px; height: 9px; margin-left: -2px; border-radius: 2px; background: var(--copper-2); animation: wheel 1.6s infinite; }
@keyframes wheel { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(12px); opacity: 0; } 100% { opacity: 0; } }
.hero-side { position: absolute; left: 42px; top: 50%; transform: translateY(-50%); display: flex; flex-direction: column; align-items: center; gap: 16px; z-index: 5; }
@media (max-width: 1399px) { .hero-side { display: none; } }
.hs-line { width: 1px; height: 72px; background: linear-gradient(180deg, rgba(255,255,255,0.45), transparent); }
.hs-tel { writing-mode: vertical-rl; letter-spacing: 2.5px; font-size: 13.5px; color: rgba(255,255,255,0.82); font-weight: 600; transition: color 0.2s; }
.hs-tel:hover { color: var(--copper-2); }

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 34px; border-radius: 999px; font-weight: 700; font-size: 15px; letter-spacing: 1.2px; cursor: pointer; border: 1.5px solid transparent; transition: 0.28s var(--ease); }
.btn-copper { background: var(--copper-grad); color: #fff; box-shadow: 0 14px 30px -12px rgba(185,127,62,0.75); }
.btn-copper:hover { transform: translateY(-2px); box-shadow: 0 18px 36px -12px rgba(185,127,62,0.9); }
.btn-outline { border-color: var(--copper); color: var(--copper); }
.btn-outline:hover { background: var(--copper-grad); border-color: transparent; color: #fff; }
.btn-ghost { border-color: rgba(255,255,255,0.55); color: #fff; backdrop-filter: blur(4px); }
.btn-ghost:hover { border-color: var(--copper-2); color: var(--copper-2); }
.btn-plain { background: transparent; color: var(--muted); }
.btn-plain:hover { color: var(--text); }

/* ---------- 统计带 ---------- */
.stats { background: var(--ink-2); color: #fff; border-block: 1px solid var(--dark-line); position: relative; }
.stats::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--copper-grad); opacity: 0.85; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { text-align: center; padding: 40px 12px 36px; border-left: 1px solid var(--dark-line); position: relative; }
.stat:first-child { border-left: 0; }
.stat b { display: block; font-size: clamp(26px, 3.2vw, 44px); font-weight: 800; color: var(--copper-2); line-height: 1.2; letter-spacing: -0.5px; font-variant-numeric: tabular-nums; }
.stat span { font-size: 13.5px; color: rgba(255,255,255,0.6); letter-spacing: 2px; }

/* ---------- 通用 Section ---------- */
.sec { padding: 110px 0; }
.sec-alt { background: var(--paper); }
.sec-head { position: relative; margin-bottom: 56px; max-width: 760px; }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-head.center .kicker { justify-content: center; }
.sec-more { position: absolute; right: 0; bottom: 6px; color: var(--copper); font-weight: 700; font-size: 14px; letter-spacing: 1.5px; transition: 0.2s; }
.sec-more:hover { letter-spacing: 2.5px; }
.kicker { display: inline-flex; align-items: center; gap: 12px; color: var(--copper); font-weight: 800; letter-spacing: 4.5px; font-size: 12.5px; text-transform: uppercase; margin-bottom: 14px; }
.kicker::before { content: ""; width: 38px; height: 2px; background: var(--copper-grad); }
.sec-title { font-size: clamp(28px, 3.6vw, 44px); font-weight: 800; line-height: 1.22; letter-spacing: -0.4px; color: var(--ink); }
.sec-head.light .sec-title { color: #fff; }
.lead { color: var(--muted); font-size: 16.5px; margin: 20px 0 8px; }

/* ---------- 关于预览 ---------- */
.about-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 72px; align-items: center; }
.about-media { position: relative; padding-bottom: 54px; }
.about-media::before { content: ""; position: absolute; left: -22px; top: -22px; width: 62%; height: 70%; border: 2px solid rgba(185,127,62,0.35); border-radius: var(--radius); z-index: 0; }
.about-media img { position: relative; z-index: 1; border-radius: var(--radius); box-shadow: var(--shadow); }
.about-badge { position: absolute; right: -14px; bottom: 8px; z-index: 2; background: var(--copper-grad); color: #fff; border-radius: 16px; padding: 18px 24px; text-align: center; box-shadow: 0 18px 40px -14px rgba(185,127,62,0.85); }
.about-badge b { display: block; font-size: 27px; letter-spacing: 2px; line-height: 1.2; }
.about-badge span { font-size: 13px; letter-spacing: 1px; opacity: 0.92; }
.ticks { list-style: none; margin: 24px 0 32px; }
.ticks li { position: relative; padding: 7px 0 7px 34px; color: var(--text); }
.ticks li::before { content: "✓"; position: absolute; left: 0; top: 7px; width: 22px; height: 22px; border-radius: 50%; background: rgba(185,127,62,0.12); color: var(--copper); font-size: 12px; font-weight: 800; display: flex; align-items: center; justify-content: center; }

/* ---------- 产品 ---------- */
.cat-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.chip { padding: 9px 22px; border-radius: 999px; border: 1px solid var(--line); background: #fff; font-size: 14px; font-weight: 600; color: var(--muted); transition: 0.22s; }
.chip:hover, .chip.on { border-color: var(--copper); color: var(--copper); background: rgba(185,127,62,0.06); }
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.prod-card { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: 0.35s var(--ease); display: flex; flex-direction: column; }
.prod-card::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--copper-grad); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.prod-card:hover { transform: translateY(-7px); box-shadow: var(--shadow); border-color: transparent; }
.prod-card:hover::after { transform: scaleX(1); }
.pc-img { aspect-ratio: 4/3; overflow: hidden; background: var(--paper); }
.pc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.prod-card:hover .pc-img img { transform: scale(1.08); }
.pc-body { padding: 20px 22px 24px; display: flex; flex-direction: column; gap: 7px; flex: 1; }
.pc-cat { font-size: 11.5px; color: var(--copper); font-weight: 800; letter-spacing: 2px; text-transform: uppercase; }
.pc-body h3 { font-size: 17.5px; color: var(--ink); line-height: 1.4; }
.pc-body p { font-size: 13.5px; color: var(--muted); flex: 1; }
.pc-more { font-size: 13px; font-weight: 700; color: var(--copper); letter-spacing: 1.5px; text-transform: uppercase; }
.pc-more i { font-style: normal; display: inline-block; transition: transform 0.25s var(--ease); }
.prod-card:hover .pc-more i, .sol-card:hover .pc-more i { transform: translateX(6px); }

/* ---------- 跑马灯 ---------- */
.marquee { overflow: hidden; background: var(--ink); border-block: 1px solid var(--dark-line); padding: 20px 0; }
.marquee-in { display: flex; gap: 52px; width: max-content; animation: mq 46s linear infinite; white-space: nowrap; }
.marquee-in span { color: rgba(255,255,255,0.5); font-weight: 600; letter-spacing: 2.5px; font-size: 14.5px; text-transform: uppercase; }
.marquee-in span:nth-child(odd) { color: var(--copper-2); }
@keyframes mq { to { transform: translateX(-50%); } }

/* ---------- 解决方案 ---------- */
.sec-solutions { background: var(--paper); }
.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.sol-card { position: relative; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: 0 8px 30px -18px rgba(10,20,29,0.25); transition: 0.35s var(--ease); display: flex; flex-direction: column; }
.sol-card:hover { transform: translateY(-7px); box-shadow: var(--shadow); }
.sc-img { aspect-ratio: 16/9.4; overflow: hidden; position: relative; background: var(--ink-2); }
.sc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.sol-card:hover .sc-img img { transform: scale(1.07); }
.sc-body { padding: 22px 24px 26px; display: flex; flex-direction: column; gap: 9px; flex: 1; }
.sc-body h3 { font-size: 18.5px; color: var(--ink); }
.sc-body p { font-size: 13.5px; color: var(--muted); flex: 1; }

/* ---------- 服务 ---------- */
.sec-service { background: radial-gradient(1200px 700px at 85% -10%, #1a3040 0%, var(--ink) 55%) var(--ink); position: relative; overflow: hidden; }
.sec-service::before { content: "ZY"; position: absolute; right: -50px; top: -80px; font-size: 320px; font-weight: 900; color: rgba(255,255,255,0.03); letter-spacing: -12px; }
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; position: relative; }
.svc-card { background: rgba(255,255,255,0.04); border: 1px solid var(--dark-line); border-top: 2px solid rgba(224,162,94,0.55); border-radius: 4px 4px var(--radius) var(--radius); padding: 32px 26px; color: #fff; position: relative; transition: 0.35s var(--ease); }
.svc-card:hover { background: rgba(224,162,94,0.09); border-color: rgba(224,162,94,0.5); border-top-color: var(--copper-2); transform: translateY(-6px); }
.svc-no { font-size: 13px; color: var(--copper-2); font-weight: 800; letter-spacing: 3px; }
.svc-card h3 { font-size: 19px; margin: 12px 0 10px; letter-spacing: 0.3px; }
.svc-card p { font-size: 13.5px; color: rgba(255,255,255,0.6); line-height: 1.8; }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: 0.35s var(--ease); }
.news-card:hover { transform: translateY(-7px); box-shadow: var(--shadow); border-color: transparent; }
.nc-img { aspect-ratio: 5/3.2; overflow: hidden; position: relative; background: var(--paper); }
.nc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.news-card:hover .nc-img img { transform: scale(1.07); }
.nc-date { position: absolute; left: 14px; bottom: 14px; background: rgba(10,20,29,0.72); backdrop-filter: blur(6px); color: #fff; font-size: 12px; padding: 5px 14px; border-radius: 999px; letter-spacing: 1px; }
.nc-body { padding: 20px 22px 24px; }
.nc-body h3 { font-size: 16.5px; color: var(--ink); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 3em; transition: color 0.2s; }
.news-card:hover .nc-body h3 { color: var(--copper); }
.nc-body p { font-size: 13px; color: var(--muted); margin-top: 9px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- CTA ---------- */
.cta { background: radial-gradient(900px 400px at 20% 120%, rgba(224,162,94,0.32) 0%, transparent 60%), var(--ink); color: #fff; padding: 92px 0; border-top: 1px solid var(--dark-line); }
.cta-in { display: flex; align-items: center; justify-content: space-between; gap: 34px; flex-wrap: wrap; }
.cta h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; letter-spacing: -0.3px; }
.cta p { opacity: 0.75; margin-top: 10px; max-width: 560px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cta .btn-ghost { border-color: rgba(255,255,255,0.6); }

/* ---------- 内页 banner ---------- */
.page-banner { height: 340px; background-size: cover; background-position: center; position: relative; display: flex; align-items: flex-end; }
.page-banner::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,20,29,0.6), rgba(10,20,29,0.82)); }
.page-banner .wrap { position: relative; color: #fff; padding-bottom: 44px; width: 100%; }
.page-banner h1 { font-size: clamp(30px, 4.2vw, 48px); font-weight: 800; letter-spacing: 0.5px; }
.page-banner p { color: var(--copper-2); letter-spacing: 4px; font-size: 13.5px; text-transform: uppercase; margin-top: 10px; font-weight: 600; }
.page-banner .crumb { font-size: 13.5px; color: rgba(255,255,255,0.7); margin-top: 12px; }
.page-banner .crumb a:hover { color: var(--copper-2); }
.page-sec { padding: 80px 0 110px; }

/* ---------- 富文本 ---------- */
.rich { max-width: 960px; margin: 0 auto; font-size: 16px; color: var(--text); }
.rich p { margin: 0 0 16px; }
.rich img { border-radius: var(--radius); margin: 26px auto; box-shadow: var(--shadow); }
.rich h3, .rich h4, .rich b { color: var(--ink); }
.rich-label { display: block; font-size: 22px; margin-bottom: 22px; padding-left: 16px; border-left: 3px solid var(--copper); letter-spacing: 0.5px; }
.rich ul, .rich ol { padding-left: 24px; margin-bottom: 16px; }
.rich table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.rich td, .rich th { border: 1px solid var(--line); padding: 10px 14px; font-size: 14.5px; }

/* ---------- 产品详情 ---------- */
.prod-detail { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: start; }
.pd-main { border-radius: var(--radius); overflow: hidden; background: var(--paper); border: 1px solid var(--line); }
.pd-main img { width: 100%; aspect-ratio: 5/3.4; object-fit: cover; }
.pd-thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.pd-thumb { width: 86px; height: 64px; border-radius: 10px; overflow: hidden; border: 2px solid transparent; cursor: pointer; background: none; padding: 0; opacity: 0.65; transition: 0.2s; }
.pd-thumb.on { border-color: var(--copper); opacity: 1; }
.pd-thumb img { width: 100%; height: 100%; object-fit: cover; }
.pd-info h2 { font-size: clamp(26px, 3vw, 36px); color: var(--ink); margin: 8px 0 16px; letter-spacing: -0.3px; }
.pd-summary { background: var(--paper); border-radius: 14px; padding: 20px 22px; margin: 16px 0; border-left: 3px solid var(--copper); }
.pd-summary b { color: var(--copper); font-size: 13.5px; letter-spacing: 2px; text-transform: uppercase; }
.pd-summary p { font-size: 14px; color: var(--muted); margin-top: 8px; }
.pd-meta { list-style: none; margin: 18px 0 28px; }
.pd-meta li { padding: 10px 2px; border-bottom: 1px dashed var(--line); font-size: 14.5px; color: var(--muted); display: flex; justify-content: space-between; }
.pd-meta b { color: var(--text); }
.pd-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 文章详情 ---------- */
.article { max-width: 860px; }
.art-cover { border-radius: var(--radius); margin-bottom: 34px; box-shadow: var(--shadow); width: 100%; max-height: 430px; object-fit: cover; }
.art-more { margin-top: 50px; border-top: 1px solid var(--line); padding-top: 26px; display: grid; gap: 10px; }
.art-more b { color: var(--ink); margin-bottom: 4px; }
.art-more a { color: var(--muted); font-size: 14.5px; transition: 0.2s; }
.art-more a::before { content: "— "; color: var(--copper); }
.art-more a:hover { color: var(--copper); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.ci-list { list-style: none; margin: 30px 0; }
.ci-list li { display: flex; gap: 18px; padding: 15px 0; border-bottom: 1px dashed var(--line); align-items: center; }
.ci-ico { width: 40px; height: 40px; min-width: 40px; border-radius: 12px; background: rgba(185,127,62,0.1); color: var(--copper); display: flex; align-items: center; justify-content: center; }
.ci-ico svg { width: 19px; height: 19px; }
.ci-list b { min-width: 84px; color: var(--ink); font-size: 14px; }
.ci-list span, .ci-list span a { color: var(--muted); transition: color 0.2s; }
.ci-list span a:hover { color: var(--copper); }
.ci-qr { display: flex; align-items: center; gap: 18px; margin-top: 14px; }
.ci-qr img { width: 112px; height: 112px; border-radius: 12px; border: 1px solid var(--line); padding: 6px; background: #fff; }
.ci-qr p { color: var(--muted); font-size: 14px; }
.contact-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 38px 36px; box-shadow: var(--shadow); }
.contact-form h3 { color: var(--ink); margin-bottom: 24px; font-size: 21px; letter-spacing: 0.3px; }
.contact-form label { display: block; font-size: 13.5px; color: var(--muted); font-weight: 600; margin-bottom: 18px; }
.contact-form input, .contact-form textarea { width: 100%; margin-top: 7px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 11px; font: inherit; font-size: 15px; color: var(--text); background: var(--paper); transition: 0.2s; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--copper); background: #fff; box-shadow: 0 0 0 3px rgba(185,127,62,0.14); }
.frow { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.frow .btn { justify-self: start; }
.hp { position: absolute; left: -9999px; }
.form-tip { font-size: 14px; color: var(--copper); min-height: 20px; }

/* ---------- Footer ---------- */
#footer { background: var(--ink); color: rgba(255,255,255,0.7); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 1fr 1.4fr; gap: 48px; padding: 76px 28px 56px; }
.f-logo { height: 42px; width: auto; margin-bottom: 18px; filter: brightness(0) invert(1); opacity: 0.96; }
.f-blurb { font-size: 14px; line-height: 1.95; }
.f-cert { margin-top: 16px; font-size: 12.5px; letter-spacing: 1.5px; color: var(--copper-2); text-transform: uppercase; font-weight: 700; }
.f-social { display: flex; gap: 10px; margin-top: 18px; }
.f-social a { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--dark-line); color: rgba(255,255,255,0.65); padding: 0; transition: 0.25s; }
.f-social a:hover { border-color: var(--copper-2); color: var(--copper-2); transform: translateY(-2px); }
.f-social svg { width: 17px; height: 17px; }
.f-col h4 { color: #fff; font-size: 16px; margin-bottom: 20px; letter-spacing: 1px; position: relative; padding-bottom: 12px; }
.f-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--copper-grad); }
.f-col a { display: block; font-size: 14px; padding: 5.5px 0; color: rgba(255,255,255,0.6); transition: 0.2s; }
.f-col a:hover { color: var(--copper-2); padding-left: 4px; }
.f-col p { font-size: 14px; padding: 4.5px 0; }
.f-col p a:hover { color: var(--copper-2); }
.f-addr { line-height: 1.8; }
.f-qr { display: flex; gap: 18px; margin-top: 14px; }
.f-qr img { width: 98px; height: 98px; background: #fff; padding: 5px; border-radius: 9px; }
.f-qr figcaption { font-size: 12.5px; margin-top: 7px; text-align: center; color: rgba(255,255,255,0.5); }
.f-bottom { border-top: 1px solid var(--dark-line); padding: 20px 0; font-size: 13px; }
.f-bottom .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.f-bottom a { color: rgba(255,255,255,0.48); }
.f-bottom a:hover { color: var(--copper-2); }

/* ---------- 浮动联系栏 ---------- */
#dock { position: fixed; right: 24px; bottom: 26px; display: flex; flex-direction: column; gap: 10px; z-index: 80; }
.dock-btn { width: 48px; height: 48px; border-radius: 50%; border: 0; display: flex; align-items: center; justify-content: center; color: #fff; cursor: pointer; box-shadow: 0 12px 28px -10px rgba(10,20,29,0.5); transition: 0.25s var(--ease); }
.dock-btn svg { width: 22px; height: 22px; }
.dock-btn:hover { transform: translateY(-3px) scale(1.05); }
.dock-btn.wa { background: #22b358; }
.dock-btn.tel { background: var(--copper-grad); }
.dock-btn.mail { background: var(--ink-3); }
.dock-btn.top { background: #fff; color: var(--ink); opacity: 0; pointer-events: none; }
.dock-btn.top.show { opacity: 1; pointer-events: auto; }

/* ---------- 返回顶部（旧按钮，保留兼容） ---------- */
#toTop { position: fixed; right: 26px; bottom: 30px; width: 46px; height: 46px; border-radius: 50%; border: 0; background: var(--copper-grad); color: #fff; font-size: 20px; cursor: pointer; opacity: 0; pointer-events: none; transition: 0.3s; z-index: 80; }
#toTop.show { opacity: 1; pointer-events: auto; }

/* ---------- Reveal 动效 ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .slide { transition: opacity 0.4s; }
  .slide-img { transform: none !important; transition: none !important; }
  .marquee-in { animation: none; }
  .slide-video { display: none; }
  .slide[data-video]:not([data-video=""])::before { content: ""; position: absolute; inset: 0; background: url('/assets/img/banner-1.jpg') center/cover; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .prod-grid, .news-grid, .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-grid, .sol-grid.three { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .about-grid, .prod-detail, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-side { display: none; }
}
@media (max-width: 640px) {
  #topbar .tb-left { display: none; }
  #topbar { font-size: 12px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .prod-grid, .news-grid, .sol-grid, .sol-grid.three, .svc-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 34px; }
  .frow { grid-template-columns: 1fr; }
  .sec { padding: 68px 0; }
  .header-in { height: 68px; }
  .logo img { height: 40px; }
  #navToggle { display: block; }
  #nav { position: fixed; inset: 108px 0 auto 0; background: #fff; flex-direction: column; align-items: stretch; padding: 10px 24px 22px; gap: 2px; box-shadow: var(--shadow); transform: translateY(-16px); opacity: 0; pointer-events: none; transition: 0.3s; }
  #nav.open { transform: none; opacity: 1; pointer-events: auto; }
  #nav a { padding: 13px 4px; border-bottom: 1px solid var(--line); }
  #nav a:not(.nav-cta)::after { display: none; }
  .nav-cta { margin: 12px 0 2px; text-align: center; justify-content: center; }
  body.nav-open #navToggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  body.nav-open #navToggle span:nth-child(2) { opacity: 0; }
  body.nav-open #navToggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { min-height: 520px; }
  .hero-scroll { display: none; }
  #dock { right: 16px; bottom: 18px; }
  .dock-btn { width: 44px; height: 44px; }
}