/* =========================================================================
 *  LANKE HARDWARE — 主站样式
 *  配色：石墨黑 + 工业橙。改主色只需改下面 :root 里的 --accent
 * ========================================================================= */
:root {
  --ink: #0a0d12;
  --ink-2: #121820;
  --steel-900: #1b2230;
  --steel-700: #3c4657;
  --steel-500: #6c7787;
  --steel-400: #8b95a3;
  --steel-300: #aab3bf;
  --line: #e3e7ec;
  --line-2: #eef1f5;
  --bg: #ffffff;
  --bg-soft: #f5f7f9;
  --bg-dark: #0a0d12;
  --accent: #ff6a00;
  --accent-d: #e35c00;
  --accent-soft: #fff3e8;
  --radius-s: 8px;
  --radius: 14px;
  --radius-l: 20px;
  --shadow-s: 0 1px 2px rgba(16, 24, 40, .05);
  --shadow: 0 10px 30px -12px rgba(16, 24, 40, .18);
  --shadow-l: 0 30px 60px -24px rgba(16, 24, 40, .28);
  --font: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1240px;
  --header-h: 76px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--steel-900);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.65;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }

/* ---------------------------------------------------------------- 通用文字 */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before {
  content: ""; width: 26px; height: 2px; background: var(--accent); display: block;
}
.eyebrow.on-dark { color: #ffb27a; }
.eyebrow.on-dark::before { background: #ffb27a; }

h1, h2, h3, h4 { margin: 0; line-height: 1.22; letter-spacing: -.015em; font-weight: 800; }

.sec-title { font-size: clamp(26px, 3.4vw, 42px); margin-top: 18px; }
.sec-sub {
  margin-top: 16px; max-width: 720px; color: var(--steel-500); font-size: 15.5px;
}
.section { padding: clamp(72px, 9vw, 124px) 0; }
.section.soft { background: var(--bg-soft); }
.section.dark { background: var(--bg-dark); color: #fff; }
.section.dark .sec-sub { color: #a9b3c1; }
.section-head { max-width: 820px; }

/* ------------------------------------------------------------------ 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 50px; padding: 0 26px; border-radius: 999px;
  font-size: 15px; font-weight: 650; letter-spacing: .01em;
  transition: transform .18s ease, box-shadow .25s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; flex: none; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 12px 26px -12px rgba(255, 106, 0, .75); }
.btn-primary:hover { background: var(--accent-d); transform: translateY(-2px); box-shadow: 0 18px 34px -14px rgba(255, 106, 0, .85); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, .28); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); border-color: rgba(255, 255, 255, .5); transform: translateY(-2px); }
.btn-outline { border: 1px solid var(--line); background: #fff; color: var(--steel-900); }
.btn-outline:hover { border-color: var(--steel-900); transform: translateY(-2px); }
.btn-sm { height: 40px; padding: 0 18px; font-size: 13.5px; }

/* ------------------------------------------------------------------ 页头 */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 80;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: background-color .3s ease, box-shadow .3s ease, height .3s ease, border-color .3s;
  border-bottom: 1px solid transparent;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.site-header.solid {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px -18px rgba(16, 24, 40, .5);
  height: 66px;
}

.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px; flex: none;
  background: linear-gradient(145deg, #1b2230, #0a0d12);
  display: grid; place-items: center; position: relative; overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12);
}
.brand-mark::after {
  content: ""; position: absolute; inset: auto -40% -60% auto; width: 36px; height: 36px;
  background: var(--accent); border-radius: 50%; filter: blur(10px); opacity: .85;
}
.brand-mark span { position: relative; color: #fff; font-weight: 800; font-size: 19px; letter-spacing: -.03em; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-name { font-weight: 800; font-size: 16px; letter-spacing: -.01em; white-space: nowrap; }
.brand-sub { font-size: 10.5px; letter-spacing: .13em; text-transform: uppercase; color: var(--steel-400); white-space: nowrap; }

.site-header:not(.solid) .brand-name,
.site-header:not(.solid) .nav-link { color: #fff; }
.site-header:not(.solid) .brand-sub { color: rgba(255, 255, 255, .6); }
.site-header:not(.solid) .brand-mark { box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .22); background: rgba(255, 255, 255, .12); }

.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 9px 14px; border-radius: 999px; font-size: 14.5px; font-weight: 550;
  color: var(--steel-700); transition: background-color .2s, color .2s;
}
.nav-link:hover { background: rgba(125, 135, 150, .12); }
.site-header:not(.solid) .nav-link:hover { background: rgba(255, 255, 255, .14); }
.nav-link.active { color: var(--accent); }
.site-header:not(.solid) .nav-link.active { color: #ffb27a; }

.header-right { display: flex; align-items: center; gap: 14px; }

/* 语言切换 */
.lang-switch {
  display: flex; align-items: center; padding: 3px; border-radius: 999px;
  border: 1px solid var(--line); background: #fff; position: relative;
}
.site-header:not(.solid) .lang-switch { border-color: rgba(255, 255, 255, .3); background: rgba(255, 255, 255, .12); }
.lang-btn {
  padding: 6px 13px; border-radius: 999px; font-size: 13px; font-weight: 700;
  color: var(--steel-500); transition: all .2s ease; letter-spacing: .02em;
}
.site-header:not(.solid) .lang-btn { color: rgba(255, 255, 255, .75); }
.lang-btn.active { background: var(--ink); color: #fff; }
.site-header:not(.solid) .lang-btn.active { background: #fff; color: var(--ink); }

.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 12px; align-items: center; justify-content: center; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: currentColor; position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: currentColor;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.site-header:not(.solid) .nav-toggle { color: #fff; }

/* ------------------------------------------------------------------ Hero */
.hero {
  position: relative; min-height: 100svh; padding: calc(var(--header-h) + 60px) 0 0;
  background: var(--ink); color: #fff; overflow: hidden; display: flex; flex-direction: column;
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .38; filter: saturate(.6) contrast(1.05); }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 12% 8%, rgba(255, 106, 0, .22), transparent 55%),
    linear-gradient(180deg, rgba(10, 13, 18, .82) 0%, rgba(10, 13, 18, .92) 55%, #0a0d12 100%);
}
.hero-grid-lines {
  position: absolute; inset: 0; opacity: .5; pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: radial-gradient(90% 70% at 60% 20%, #000, transparent 75%);
}
.hero .wrap { position: relative; z-index: 2; flex: 1; display: flex; flex-direction: column; justify-content: center; }
.hero-inner { max-width: 900px; padding: 40px 0 30px; }
.hero h1 {
  font-size: clamp(34px, 6vw, 74px); font-weight: 850; letter-spacing: -.03em; margin-top: 22px;
}
.hero h1 .accent {
  background: linear-gradient(100deg, #ff8a2b, #ff5a00 60%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero h1 .line { display: block; }
.hero-sub { margin-top: 24px; font-size: clamp(15px, 1.35vw, 17.5px); color: #b9c2ce; max-width: 680px; }
.hero-cta { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 14px; }
/* 英文标题更长，单独收一点字号，避免断行难看 */
html[lang="en"] .hero h1 { font-size: clamp(32px, 4.9vw, 60px); }
html[lang="en"] .hero-inner { max-width: 1040px; }
html[lang="en"] .sec-title { font-size: clamp(25px, 3vw, 38px); }

.hero-stats {
  position: relative; z-index: 2; border-top: 1px solid rgba(255, 255, 255, .12);
  margin-top: auto;
}
.hero-stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; padding-top: 26px; padding-bottom: 30px; }
.stat { padding-right: 16px; }
.stat b { display: block; font-size: clamp(24px, 2.6vw, 36px); font-weight: 800; letter-spacing: -.02em; }
.stat b i { font-style: normal; color: var(--accent); }
.stat span { display: block; margin-top: 4px; font-size: 13px; color: #97a1ae; }

/* -------------------------------------------------------------- 加工能力 */
.cap-grid { margin-top: 54px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cap-card {
  padding: 30px 26px 32px; border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; transition: transform .25s ease, box-shadow .3s ease, border-color .25s;
  position: relative; overflow: hidden;
}
.cap-card::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--accent);
  transform: scaleY(0); transform-origin: top; transition: transform .35s ease;
}
.cap-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.cap-card:hover::before { transform: scaleY(1); }
.cap-icon {
  width: 48px; height: 48px; border-radius: 13px; background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center;
}
.cap-icon svg { width: 24px; height: 24px; }
.cap-card h3 { margin-top: 20px; font-size: 17.5px; }
.cap-card p { margin: 10px 0 0; color: var(--steel-500); font-size: 14.3px; }
.cap-no {
  position: absolute; top: 22px; right: 24px; font-size: 34px; font-weight: 800;
  color: var(--line-2); letter-spacing: -.04em;
}

/* -------------------------------------------------------------- 产品中心 */
.filter-bar { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: 999px;
  border: 1px solid var(--line); background: #fff; color: var(--steel-700);
  font-size: 14.5px; font-weight: 600; transition: all .22s ease;
}
.chip:hover { border-color: var(--steel-300); transform: translateY(-1px); }
.chip.active { background: var(--ink); color: #fff; border-color: var(--ink); box-shadow: var(--shadow); }
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.chip .num { font-size: 12px; color: var(--steel-400); font-weight: 600; }
.chip.active .num { color: rgba(255, 255, 255, .65); }

.cat-strip { margin-top: 34px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.cat-card {
  position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  background: #fff; transition: transform .25s ease, box-shadow .3s ease; text-align: left;
}
.cat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.cat-card .thumb { aspect-ratio: 4 / 3; background: var(--bg-soft); overflow: hidden; }
.cat-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.cat-card:hover .thumb img { transform: scale(1.06); }
.cat-card .meta { padding: 16px 18px 18px; }
.cat-card h4 { font-size: 15.5px; }
.cat-card em { font-style: normal; font-size: 12.5px; color: var(--steel-400); letter-spacing: .02em; }

.product-grid { margin-top: 34px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.p-card {
  border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden;
  display: flex; flex-direction: column; text-align: left;
  transition: transform .25s ease, box-shadow .3s ease, border-color .25s ease;
}
.p-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-l); border-color: transparent; }
.p-thumb { position: relative; aspect-ratio: 1 / 1; background: #fff; overflow: hidden; }
.p-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s cubic-bezier(.2, .7, .3, 1); }
.p-card:hover .p-thumb img { transform: scale(1.07); }
.p-cat {
  position: absolute; top: 12px; left: 12px; padding: 5px 11px; border-radius: 999px;
  background: rgba(10, 13, 18, .82); color: #fff; font-size: 11.5px; font-weight: 650;
  backdrop-filter: blur(6px); max-width: calc(100% - 96px);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.p-feat {
  position: absolute; top: 12px; right: 12px; padding: 5px 11px; border-radius: 999px;
  background: var(--accent); color: #fff; font-size: 11.5px; font-weight: 700;
}
.p-body { padding: 18px 18px 20px; display: flex; flex-direction: column; flex: 1; }
.p-body h3 { font-size: 15.5px; line-height: 1.4; }
.p-body .en { display: block; font-size: 12.5px; color: var(--steel-400); font-weight: 500; margin-top: 3px; letter-spacing: .01em; }
.p-tags { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 11.5px; color: var(--steel-500); background: var(--bg-soft);
  border: 1px solid var(--line-2); padding: 3px 9px; border-radius: 6px;
}
.p-foot {
  margin-top: auto; padding-top: 16px; display: flex; align-items: center; justify-content: space-between;
  color: var(--accent); font-size: 13.5px; font-weight: 650;
}
.p-foot .arrow { transition: transform .25s ease; }
.p-card:hover .p-foot .arrow { transform: translateX(4px); }

.grid-more { margin-top: 40px; display: flex; justify-content: center; }
.empty { padding: 60px 0; text-align: center; color: var(--steel-400); }

/* -------------------------------------------------------------- 工厂实力 */
.split { display: grid; grid-template-columns: 1.02fr .98fr; gap: 56px; align-items: center; }
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.gallery figure { margin: 0; border-radius: var(--radius); overflow: hidden; position: relative; background: #11151c; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.gallery figure:hover img { transform: scale(1.05); }
.gallery .g-wide { grid-column: span 2; aspect-ratio: 16 / 8; }
.gallery .g-sq { aspect-ratio: 4 / 3; }
.gallery figcaption {
  position: absolute; left: 14px; bottom: 12px; color: #fff; font-size: 12.5px; font-weight: 600;
  text-shadow: 0 1px 8px rgba(0, 0, 0, .8);
}
.about-body p { color: var(--steel-500); font-size: 15px; margin: 16px 0 0; }
.about-body p:first-of-type { margin-top: 22px; }
.about-note {
  margin-top: 26px; padding: 18px 20px; border-left: 3px solid var(--accent);
  background: var(--bg-soft); border-radius: 0 var(--radius-s) var(--radius-s) 0;
  font-size: 14.5px; color: var(--steel-700);
}

/* -------------------------------------------------------------- 品质管理 */
.qc-grid { margin-top: 54px; display: grid; grid-template-columns: 1.05fr 1fr; gap: 24px; }
.qc-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-l); padding: 34px 34px 36px;
}
.section.dark .qc-card { background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .12); }
.qc-card h3 { font-size: 19px; }
.gauges { margin-top: 26px; display: grid; gap: 22px; }
.gauge-top { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.gauge-top span { font-size: 14px; color: #b9c2ce; }
.gauge-top b { font-size: 22px; font-weight: 800; letter-spacing: -.02em; }
.bar { margin-top: 10px; height: 6px; border-radius: 99px; background: rgba(255, 255, 255, .12); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, #ff8a2b, #ff5a00); width: 0; transition: width 1.4s cubic-bezier(.2, .7, .3, 1); }
.qc-policy { font-size: 17px; line-height: 1.85; color: #dfe4ea; margin-top: 20px; }
.cert-badge {
  margin-top: 28px; display: inline-flex; align-items: center; gap: 14px; padding: 14px 20px;
  border-radius: 999px; border: 1px dashed rgba(255, 255, 255, .28);
}
.cert-badge .seal {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent); color: #fff; font-weight: 800; font-size: 12px; flex: none;
}
.cert-badge b { font-size: 14.5px; }
.cert-badge em { font-style: normal; display: block; font-size: 12px; color: #97a1ae; }

/* ---------------------------------------------------------------- 联系我们 */
.contact-grid { margin-top: 54px; display: grid; grid-template-columns: .92fr 1.08fr; gap: 40px; align-items: start; }
.info-list { display: grid; gap: 14px; }
.info-item {
  display: flex; gap: 16px; padding: 20px 22px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); transition: transform .22s ease, box-shadow .3s ease;
}
.info-item:hover { transform: translateX(4px); box-shadow: var(--shadow); }
.info-icon {
  width: 42px; height: 42px; border-radius: 12px; background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; flex: none;
}
.info-icon svg { width: 20px; height: 20px; }
.info-item span { display: block; font-size: 12.5px; color: var(--steel-400); letter-spacing: .04em; }
.info-item b { display: block; margin-top: 3px; font-size: 15.5px; font-weight: 700; word-break: break-all; }
.info-item b a:hover { color: var(--accent); }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-l); padding: 32px; box-shadow: var(--shadow-s); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 650; color: var(--steel-700); margin-bottom: 7px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 13px 15px; border-radius: 10px; border: 1px solid var(--line);
  font-family: inherit; font-size: 14.5px; color: var(--steel-900); background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 118px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft);
}
.form-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 6px; }
.form-tip { margin: 14px 0 0; font-size: 12.5px; color: var(--steel-400); }

/* ------------------------------------------------------------------ 页脚 */
.site-footer { background: var(--ink); color: #96a0ad; padding: 64px 0 28px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 34px; }
.foot-brand .brand-name { color: #fff; }
.foot-brand p { margin: 18px 0 0; font-size: 14px; max-width: 320px; }
.foot-col h5 { margin: 0 0 16px; color: #fff; font-size: 14px; letter-spacing: .04em; }
.foot-col a, .foot-col li { display: block; font-size: 14px; padding: 5px 0; color: #96a0ad; }
.foot-col a:hover { color: #fff; }
.foot-col ul { list-style: none; margin: 0; padding: 0; }
.foot-bottom {
  margin-top: 46px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .1);
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; font-size: 13px;
}

/* ------------------------------------------------------------------ 弹窗 */
.modal {
  position: fixed; inset: 0; z-index: 120; display: none;
  align-items: center; justify-content: center; padding: 24px;
}
.modal.open { display: flex; }
.modal-mask { position: absolute; inset: 0; background: rgba(8, 11, 15, .62); backdrop-filter: blur(4px); animation: fade .25s ease; }
.modal-card {
  position: relative; z-index: 2; width: min(980px, 100%); max-height: 88vh; overflow: auto;
  background: #fff; border-radius: var(--radius-l); animation: pop .28s cubic-bezier(.2, .8, .3, 1);
}
.modal-close {
  position: absolute; top: 14px; right: 14px; z-index: 3;
  width: 40px; height: 40px; border-radius: 50%; background: rgba(255, 255, 255, .9);
  display: grid; place-items: center; box-shadow: var(--shadow); font-size: 20px; color: var(--steel-700);
  transition: transform .2s, background-color .2s;
}
.modal-close:hover { transform: rotate(90deg); background: #fff; }
.modal-body { display: grid; grid-template-columns: 1fr 1fr; }
.modal-media { background: var(--bg-soft); display: grid; place-items: center; padding: 24px; }
.modal-media img { width: 100%; border-radius: var(--radius); background: #fff; }
.modal-info { padding: 38px 36px 34px; }
.modal-info h3 { font-size: 24px; }
.modal-info .en { display: block; margin-top: 6px; font-size: 14px; color: var(--steel-400); font-weight: 500; }
.modal-info .desc { margin-top: 18px; color: var(--steel-500); font-size: 15px; }
.spec-table { margin-top: 24px; border-top: 1px solid var(--line); }
.spec-row { display: flex; gap: 18px; padding: 13px 0; border-bottom: 1px solid var(--line-2); font-size: 14px; }
.spec-row span { flex: none; width: 118px; color: var(--steel-400); }
.spec-row b { font-weight: 600; color: var(--steel-900); }
.modal-actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; }
.modal-note { margin: 16px 0 0; font-size: 12.5px; color: var(--steel-400); }

@keyframes fade { from { opacity: 0 } to { opacity: 1 } }
@keyframes pop { from { opacity: 0; transform: translateY(14px) scale(.98) } to { opacity: 1; transform: none } }

/* ------------------------------------------------------------------ 动效 */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.2, .7, .3, 1), transform .7s cubic-bezier(.2, .7, .3, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ------------------------------------------------------------------ 响应 */
@media (max-width: 1100px) {
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .cat-strip { grid-template-columns: repeat(3, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid, .qc-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .header-right .btn-quote { display: none; }
  .nav.open {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    position: fixed; top: 66px; left: 0; right: 0; padding: 16px 22px 24px;
    background: rgba(255, 255, 255, .98); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .nav.open .nav-link { color: var(--steel-900); padding: 13px 12px; border-radius: 10px; }
  .nav.open .nav-link.active { color: var(--accent); background: var(--accent-soft); }
  .hero-stats .wrap { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .modal-body { grid-template-columns: 1fr; }
  .modal-media { padding: 16px; }
  .modal-info { padding: 26px 22px 28px; }
}
@media (max-width: 680px) {
  .wrap { padding: 0 18px; }
  .brand { gap: 9px; }
  .brand-mark { width: 34px; height: 34px; border-radius: 9px; }
  .brand-name { font-size: 15px; }
  .header-right { gap: 8px; }
  .lang-btn { padding: 6px 10px; font-size: 12.5px; }
  .cap-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .cat-strip { grid-template-columns: 1fr 1fr; }
  .p-body { padding: 14px 14px 16px; }
  .p-body h3 { font-size: 14px; }
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 22px; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .hero-cta .btn { flex: 1; }
  .foot-grid { grid-template-columns: 1fr; gap: 26px; }
  .brand-sub { display: none; }
}