/* ==========================================================================
   Anhe Group — Design System
   风格参照 ortonbaths.com 的产品画廊结构，但重塑为集团级专业视觉
   ========================================================================== */

:root {
  /* Brand */
  --ink: #14161a;
  --ink-2: #1f242c;
  --ink-3: #33383f;
  --body: #5b6068;
  --muted: #8a9099;
  --line: #e4e6e9;
  --line-2: #eef0f2;
  --bg: #ffffff;
  --bg-soft: #f7f8f9;
  --bg-warm: #faf9f7;
  --accent: #1f4e5f;
  --accent-2: #2c6e84;
  --accent-soft: #eaf1f3;
  --accent-ink: #0f3440;
  --gold: #b08d57;
  --gold-soft: #f6f1e8;

  /* Type */
  --font-head: "Inter", "Helvetica Neue", Helvetica, Arial, "PingFang SC", sans-serif;
  --font-body: "Inter", "Helvetica Neue", Helvetica, Arial, "PingFang SC", sans-serif;

  /* Scale */
  --h1: clamp(2.1rem, 1.35rem + 2.6vw, 3.65rem);
  --h2: clamp(1.6rem, 1.16rem + 1.5vw, 2.5rem);
  --h3: clamp(1.18rem, 1rem + 0.62vw, 1.55rem);
  --h4: clamp(1rem, 0.95rem + 0.24vw, 1.14rem);
  --lead: clamp(1rem, 0.96rem + 0.2vw, 1.12rem);
  --small: 0.875rem;
  --tiny: 0.78rem;

  /* Space */
  --wrap: 1320px;
  --gutter: clamp(1.1rem, 0.5rem + 2.2vw, 2.6rem);
  --sec: clamp(3.6rem, 2.4rem + 4vw, 7rem);
  --sec-sm: clamp(2.4rem, 1.7rem + 2.4vw, 4.2rem);

  /* Effects */
  --r-sm: 4px;
  --r: 8px;
  --r-lg: 14px;
  --sh-1: 0 1px 2px rgba(20, 22, 26, 0.05), 0 2px 8px rgba(20, 22, 26, 0.04);
  --sh-2: 0 2px 6px rgba(20, 22, 26, 0.07), 0 12px 30px rgba(20, 22, 26, 0.08);
  --sh-3: 0 8px 20px rgba(20, 22, 26, 0.1), 0 28px 70px rgba(20, 22, 26, 0.12);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.68;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 防止移动端抽屉导航造成横向滚动 */
html { overflow-x: hidden; }

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-head);
  color: var(--ink);
  line-height: 1.18;
  letter-spacing: -0.021em;
  font-weight: 700;
  margin: 0 0 0.5em;
}
h1 { font-size: var(--h1); font-weight: 800; letter-spacing: -0.032em; }
h2 { font-size: var(--h2); }
h3 { font-size: var(--h3); }
h4 { font-size: var(--h4); }
p  { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

strong, b { color: var(--ink); font-weight: 600; }

::selection { background: var(--accent); color: #fff; }

:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ------------------------------------------------------------ Layout */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap-narrow { max-width: 900px; }
.wrap-mid { max-width: 1120px; }

.section { padding-block: var(--sec); }
.section-sm { padding-block: var(--sec-sm); }
.section-soft { background: var(--bg-soft); }
.section-warm { background: var(--bg-warm); }
.section-ink { background: var(--ink); color: #b9bfc7; }
.section-ink h1, .section-ink h2, .section-ink h3, .section-ink h4 { color: #fff; }
.section-ink .eyebrow { color: var(--gold); }

.sec-head { max-width: 780px; margin-bottom: clamp(2rem, 1.4rem + 1.8vw, 3.4rem); }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-head p { font-size: var(--lead); color: var(--body); margin-bottom: 0; }
.section-ink .sec-head p { color: #a8aeb7; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--tiny);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: currentColor;
  opacity: 0.55;
}
.sec-head.center .eyebrow { justify-content: center; }

.grid { display: grid; gap: clamp(1rem, 0.6rem + 1.4vw, 1.9rem); }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.g-5 { grid-template-columns: repeat(5, 1fr); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: center;
}
.split-6040 { grid-template-columns: 1.35fr 1fr; }
.split-4060 { grid-template-columns: 1fr 1.35fr; }
.split-tight { gap: clamp(1.6rem, 1rem + 2.6vw, 3.4rem); }

/* ------------------------------------------------------------ Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.92em 1.7em;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.2;
  text-align: center;
  transition: background .28s var(--ease), color .28s var(--ease),
              border-color .28s var(--ease), transform .28s var(--ease),
              box-shadow .28s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn svg { width: 15px; height: 15px; flex: none; transition: transform .28s var(--ease); }
.btn:hover svg { transform: translateX(3px); }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); box-shadow: var(--sh-2); }

.btn-accent { background: var(--gold); color: #fff; }
.btn-accent:hover { background: #97794a; box-shadow: var(--sh-2); }

.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--ink-3); background: var(--ink); color: #fff; }

.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-2); }

.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: var(--accent); color: #fff; }

.btn-outline-light { border-color: rgba(255,255,255,.34); color: #fff; }
.btn-outline-light:hover { background: #fff; color: var(--ink); border-color: #fff; }

.btn-sm { padding: 0.7em 1.25em; font-size: 0.83rem; }
.btn-lg { padding: 1.05em 2.1em; font-size: 0.97rem; }
.btn-block { display: flex; width: 100%; justify-content: center; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent-2);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.link-arrow::after {
  content: "→";
  transition: transform .25s var(--ease);
}
.link-arrow:hover { color: var(--accent-ink); border-bottom-color: currentColor; }
.link-arrow:hover::after { transform: translateX(4px); }

/* ------------------------------------------------------------ Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(20,22,26,.07); }

.topbar {
  background: var(--ink);
  color: #9aa1ab;
  font-size: var(--tiny);
  padding-block: 0.55rem;
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.topbar-items { display: flex; align-items: center; gap: clamp(0.6rem, 1.4vw, 1.5rem); white-space: nowrap; }
.topbar a { color: #cfd4da; transition: color .2s; }
.topbar a:hover { color: #fff; }
.topbar .tb-sep { width: 1px; height: 11px; background: rgba(255,255,255,.16); flex: none; }

/* 页眉主体
   ─ 两行式布局（桌面端）
   ─ 第一行：品牌 | CTA      第二行：导航横向铺满
   ─ 原因：9 个导航项(904px) + 品牌(276) + CTA(264) + 间距(48) = 1444px，
     超过容器内容宽 1237px，单行横排在任何宽度下都放不下，
     强行挤在一行会导致靠右的项被裁切。
   ─ 两行后导航独占整行，无论窗口多窄都不会被裁。
   ─ 字号/间距用 clamp() 连续缩放，随窗口平滑变化。 */
.header-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "brand cta"
    "nav   nav";
  align-items: center;
  gap: 0.55rem clamp(0.7rem, 1.5vw, 1.5rem);
  padding-block: 0.85rem 0.6rem;
}
.brand { grid-area: brand; }
.nav { grid-area: nav; }
.header-cta { grid-area: cta; }
.brand { display: flex; align-items: center; gap: 0.7rem; flex: 0 0 auto; }
.brand-mark {
  width: 42px; height: 42px;
  border-radius: var(--r-sm);
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: -0.03em;
  flex: none;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1rem, 0.92rem + 0.22vw, 1.2rem);
  color: var(--ink);
  letter-spacing: -0.025em;
  white-space: nowrap;
}
.brand-sub {
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(0.1rem, 0.18vw, 0.2rem);
  flex: 1 1 auto;
  min-width: 0;
  flex-wrap: wrap;
  justify-content: center;
}
.nav-item { position: relative; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.6rem clamp(0.34rem, 0.12rem + 0.5vw, 0.72rem);
  font-size: clamp(0.76rem, 0.66rem + 0.28vw, 0.9rem);
  font-weight: 500;
  color: var(--ink-3);
  border-radius: var(--r-sm);
  transition: color .22s var(--ease), background .22s var(--ease);
  white-space: nowrap;
}
.nav-link:hover, .nav-item:hover > .nav-link { color: var(--accent); background: var(--bg-soft); }
.nav-link .caret { width: 9px; height: 9px; opacity: .5; transition: transform .25s var(--ease); }
.nav-item:hover .caret { transform: rotate(180deg); }

/* Mega menu
   ─ 宽度自适应列数，不再固定 1240px
   ─ 左对齐于导航项，配合 JS 的边界修正，保证不超出视口 */
.mega {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  transform: translateY(8px);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-3);
  padding: 1.4rem 1.5rem;
  width: max-content;
  max-width: min(calc(100vw - 32px), 1180px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .26s var(--ease), transform .26s var(--ease), visibility .26s;
}
.nav-item:hover .mega { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }

/* JS 控制的显隐状态（触屏与键盘可达） */
.mega.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}
.nav-item.is-mega-open > .nav-link { color: var(--accent); background: var(--bg-soft); }
.mega::before {
  content: "";
  position: absolute;
  top: -12px; left: 0; right: 0; height: 12px;
}
.mega-inner {
  display: grid;
  grid-template-columns: repeat(var(--mega-cols, 4), minmax(0, 1fr));
  gap: 0 1.5rem;
}
.mega-col { min-width: 0; max-width: 210px; }
.mega-col > .mega-title {
  font-family: var(--font-head);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 0.6rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--line);
}
.mega-col a {
  display: block;
  font-size: 0.84rem;
  padding: 0.26rem 0;
  color: var(--body);
  transition: color .2s var(--ease), transform .2s var(--ease);
}
.mega-col a:hover { color: var(--accent); transform: translateX(3px); }

/* 特色图：作为网格最后一列 */
.mega-feature {
  width: 100%;
  max-width: 210px;
  border-radius: var(--r);
  overflow: hidden;
  background: var(--bg-soft);
  display: flex;
  flex-direction: column;
  align-self: start;
}
.mega-feature img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.mega-feature-body { padding: 0.7rem 0.8rem 0.85rem; }
.mega-feature-body strong { display: block; font-size: 0.82rem; margin-bottom: 0.22rem; }
.mega-feature-body span {
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.header-cta { display: flex; align-items: center; gap: 0.6rem; flex: none; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--r-sm);
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 18px; height: 1.8px;
  background: var(--ink);
  position: relative;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0;
  width: 18px; height: 1.8px; background: var(--ink);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ------------------------------------------------------------ Hero */
.hero {
  position: relative;
  background: var(--ink);
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .42; }
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(15,20,25,.95) 0%, rgba(15,20,25,.86) 42%, rgba(15,20,25,.55) 100%),
    linear-gradient(to top, rgba(15,20,25,.7), transparent 45%);
}
.hero-inner {
  position: relative;
  padding-block: clamp(4rem, 2.6rem + 6vw, 8rem);
  max-width: 760px;
}
.hero h1 { color: #fff; margin-bottom: 1.1rem; }
.hero h1 .hl { color: var(--gold); }
.hero-lead {
  font-size: clamp(1rem, 0.95rem + 0.42vw, 1.22rem);
  color: #c3c9d0;
  max-width: 640px;
  margin-bottom: 2rem;
  line-height: 1.62;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-bottom: 2.6rem; }
.hero .eyebrow { color: var(--gold); }

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  border-top: 1px solid rgba(255,255,255,.14);
  padding-top: 1.6rem;
  max-width: 700px;
}
.hero-point strong {
  display: block;
  color: #fff;
  font-size: 0.92rem;
  margin-bottom: 0.22rem;
  font-family: var(--font-head);
}
.hero-point span { font-size: var(--tiny); color: #9aa1ab; line-height: 1.5; display: block; }

/* Page hero (inner pages) */
.page-hero {
  position: relative;
  background: var(--ink);
  overflow: hidden;
}
.page-hero-bg { position: absolute; inset: 0; z-index: -2; }
.page-hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .32; }
.page-hero-bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(15,20,25,.96), rgba(15,20,25,.78));
}
.page-hero-inner { padding-block: clamp(3rem, 2.2rem + 3.6vw, 5.6rem); max-width: 760px; }
.page-hero h1 { color: #fff; }
.page-hero p { color: #b8bec6; font-size: var(--lead); margin-bottom: 0; }
.page-hero .eyebrow { color: var(--gold); }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-size: var(--tiny);
  margin-bottom: 1.3rem;
  color: #8b929b;
}
.crumbs a { color: #b4bac2; transition: color .2s; }
.crumbs a:hover { color: #fff; }
.crumbs .sep { opacity: .5; }

/* ------------------------------------------------------------ Value props */
.value-band { background: var(--bg-soft); border-block: 1px solid var(--line); }
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.value-item {
  padding: clamp(1.6rem, 1.2rem + 1.4vw, 2.6rem) clamp(1.1rem, 0.8rem + 1.2vw, 2rem);
  border-right: 1px solid var(--line);
  position: relative;
}
.value-item:last-child { border-right: none; }
.value-num {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--accent-2);
  margin-bottom: 0.8rem;
}
.value-item h4 { margin-bottom: 0.5rem; }
.value-item p { font-size: 0.92rem; margin-bottom: 0; }

/* ------------------------------------------------------------ Product gallery (orton style) */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(0.7rem, 0.4rem + 1vw, 1.15rem);
}
.gallery-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--r);
  background: var(--bg-soft);
  display: block;
  aspect-ratio: 3/4;
}
.gallery-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease);
}
.gallery-card:hover img { transform: scale(1.06); }
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,20,25,.82) 0%, rgba(15,20,25,.25) 45%, transparent 72%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(1rem, 0.7rem + 1vw, 1.5rem);
  opacity: 0;
  transition: opacity .38s var(--ease);
}
.gallery-card:hover .gallery-overlay { opacity: 1; }
.gallery-overlay h4 { color: #fff; margin-bottom: 0.3rem; font-size: 1.02rem; }
.gallery-overlay span { color: #c3c9d0; font-size: var(--tiny); }
.gallery-tag {
  position: absolute;
  top: 0.85rem; left: 0.85rem;
  background: rgba(255,255,255,.94);
  color: var(--ink);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.32rem 0.6rem;
  border-radius: 3px;
}
.gallery-label {
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  padding: clamp(0.9rem, 0.6rem + 1vw, 1.3rem);
  background: linear-gradient(to top, rgba(15,20,25,.86), transparent);
  color: #fff;
}
.gallery-label strong { display: block; font-family: var(--font-head); font-size: 0.95rem; margin-bottom: 0.15rem; }
.gallery-label span { font-size: var(--tiny); color: #b8bec6; }

/* Big category tiles */
.cat-tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(0.7rem, 0.4rem + 1vw, 1.1rem);
}
.cat-tile {
  position: relative;
  overflow: hidden;
  border-radius: var(--r);
  display: block;
  aspect-ratio: 4/5;
}
.cat-tile img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.cat-tile:hover img { transform: scale(1.07); }
.cat-tile::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(15,20,25,.9) 0%, rgba(15,20,25,.3) 50%, transparent 75%);
}
.cat-tile-body {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 1.3rem;
  z-index: 1;
}
.cat-tile-body strong {
  display: block;
  color: #fff;
  font-family: var(--font-head);
  font-size: 1.08rem;
  margin-bottom: 0.28rem;
}
.cat-tile-body span { color: #b8bec6; font-size: var(--tiny); display: block; margin-bottom: 0.6rem; }
.cat-tile-body .link-arrow { color: var(--gold); font-size: var(--tiny); }

/* ------------------------------------------------------------ Product cards */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1rem, 0.6rem + 1.4vw, 1.9rem);
}
.prod-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), transform .3s var(--ease);
}
.prod-card:hover { border-color: transparent; box-shadow: var(--sh-2); transform: translateY(-3px); }
.prod-img {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-soft);
}
.prod-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .65s var(--ease); }
.prod-card:hover .prod-img img { transform: scale(1.05); }
.prod-badge {
  position: absolute;
  top: 0.7rem; left: 0.7rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 0.3rem 0.55rem;
  border-radius: 3px;
}
.prod-badge.gold { background: var(--gold); }
.prod-body { padding: 1.05rem 1.1rem 1.2rem; display: flex; flex-direction: column; flex: 1; }
.prod-cat {
  font-size: 0.66rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 700;
  margin-bottom: 0.45rem;
}
.prod-body h4 { font-size: 0.98rem; line-height: 1.35; margin-bottom: 0.5rem; }
.prod-body p { font-size: 0.87rem; margin-bottom: 0.9rem; }
.prod-foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line-2);
}
.prod-note { font-size: var(--tiny); color: var(--muted); }
.prod-link {
  font-size: var(--tiny);
  font-weight: 700;
  color: var(--accent-2);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.prod-link::after { content: "→"; transition: transform .25s var(--ease); }
.prod-card:hover .prod-link::after { transform: translateX(3px); }

/* ------------------------------------------------------------ Category listing page */
.listing-layout { display: grid; grid-template-columns: 258px 1fr; gap: clamp(1.6rem, 1rem + 2.4vw, 3rem); align-items: start; }

.filter-panel {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: #fff;
  overflow: hidden;
  position: sticky;
  top: 96px;
}
.filter-head {
  padding: 0.9rem 1.1rem;
  background: var(--ink);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.filter-group { padding: 1.1rem; border-bottom: 1px solid var(--line-2); }
.filter-group:last-child { border-bottom: none; }
.filter-group > h5 {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 0.75rem;
  font-weight: 800;
}
.filter-list { display: flex; flex-direction: column; gap: 0.15rem; }
.filter-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.87rem;
  padding: 0.35rem 0.5rem;
  border-radius: var(--r-sm);
  color: var(--body);
  transition: background .2s var(--ease), color .2s var(--ease);
}
.filter-list a:hover { background: var(--bg-soft); color: var(--accent); }
.filter-list a.active { background: var(--accent-soft); color: var(--accent-ink); font-weight: 600; }
.filter-list .cnt { font-size: 0.72rem; color: var(--muted); }

.listing-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.6rem;
}
.listing-count { font-size: 0.88rem; color: var(--muted); }
.listing-count strong { color: var(--ink); }
.listing-tools { display: flex; align-items: center; gap: 0.8rem; }
.sort-select {
  appearance: none;
  border: 1px solid var(--line);
  background: #fff
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='7' viewBox='0 0 11 7'%3E%3Cpath d='M1 1l4.5 4.5L10 1' stroke='%238a9099' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E")
    no-repeat right 0.85rem center;
  padding: 0.6em 2.4em 0.6em 0.9em;
  border-radius: var(--r-sm);
  font-size: 0.85rem;
  color: var(--ink);
  font-family: inherit;
  cursor: pointer;
}
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  margin-top: clamp(2rem, 1.4rem + 2vw, 3.4rem);
  flex-wrap: wrap;
}
.pagination a, .pagination span {
  min-width: 38px; height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: 0.6rem;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-size: 0.87rem;
  color: var(--body);
  transition: all .22s var(--ease);
}
.pagination a:hover { border-color: var(--ink); color: var(--ink); }
.pagination .current { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.pagination .disabled { opacity: .4; pointer-events: none; }
.pagination .gap { border: none; min-width: 20px; }

/* ------------------------------------------------------------ Cards / features */
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: clamp(1.4rem, 1rem + 1.2vw, 2rem);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), transform .3s var(--ease);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.feature-card:hover { border-color: transparent; box-shadow: var(--sh-2); transform: translateY(-3px); }
.feature-icon {
  width: 44px; height: 44px;
  border-radius: var(--r-sm);
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 1.1rem;
  flex: none;
}
.feature-icon svg { width: 21px; height: 21px; }
.feature-card h4 { margin-bottom: 0.55rem; }
.feature-card p { font-size: 0.92rem; margin-bottom: 0; }
.feature-card .fc-foot {
  margin-top: auto;
  padding-top: 1.1rem;
}

.service-card { position: relative; overflow: hidden; }
.service-card .sc-no {
  font-family: var(--font-head);
  font-size: 3.6rem;
  font-weight: 800;
  line-height: 1;
  color: var(--line);
  position: absolute;
  top: 0.7rem; right: 1.1rem;
  letter-spacing: -0.05em;
  transition: color .3s var(--ease);
}
.service-card:hover .sc-no { color: var(--accent-soft); }

/* Checklist */
.check-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.75rem; }
.check-list li {
  display: flex;
  gap: 0.7rem;
  font-size: 0.95rem;
  line-height: 1.6;
  align-items: flex-start;
}
.check-list li::before {
  content: "";
  flex: none;
  width: 18px; height: 18px;
  margin-top: 3px;
  border-radius: 50%;
  background: var(--accent-soft);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='9' viewBox='0 0 11 9'%3E%3Cpath d='M1 4.5l3 3 6-6' stroke='%231f4e5f' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

/* Numbered process */
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; counter-reset: step; }
.process-item {
  padding: clamp(1.5rem, 1.1rem + 1.4vw, 2.4rem);
  border-top: 1px solid var(--line);
  position: relative;
}
.process-no {
  font-family: var(--font-head);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 0.7rem;
}
.process-item h4 { margin-bottom: 0.45rem; }
.process-item p { font-size: 0.9rem; margin-bottom: 0; }

/* Stats */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); }
.stat {
  background: var(--ink);
  padding: clamp(1.6rem, 1.2rem + 1.4vw, 2.6rem) clamp(1.1rem, 0.8rem + 1.2vw, 1.8rem);
  text-align: center;
}
.stat strong {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(2rem, 1.5rem + 1.8vw, 3rem);
  font-weight: 800;
  color: #fff;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 0.55rem;
}
.stat span { font-size: var(--tiny); color: #9aa1ab; }

/* ------------------------------------------------------------ Tabs */
.tabs { border-bottom: 1px solid var(--line); display: flex; gap: 0.2rem; overflow-x: auto; }
.tab-btn {
  padding: 0.9rem 1.2rem;
  border: none;
  background: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; padding-top: 1.8rem; }
.tab-panel.active { display: block; animation: fadeUp .34s var(--ease); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ------------------------------------------------------------ Accordion */
.acc-item { border-bottom: 1px solid var(--line); }
.acc-item:first-child { border-top: 1px solid var(--line); }
.acc-q {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1.3rem 0;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.45;
}
.acc-q .pm {
  flex: none;
  width: 22px; height: 22px;
  position: relative;
  margin-top: 2px;
}
.acc-q .pm::before, .acc-q .pm::after {
  content: ""; position: absolute;
  background: var(--accent);
  transition: transform .28s var(--ease), opacity .28s var(--ease);
}
.acc-q .pm::before { top: 10px; left: 3px; width: 16px; height: 2px; }
.acc-q .pm::after { left: 10px; top: 3px; width: 2px; height: 16px; }
.acc-item.open .pm::after { transform: rotate(90deg); opacity: 0; }
.acc-item.open .acc-q { color: var(--accent); }
.acc-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .32s var(--ease);
}
.acc-item.open .acc-a { grid-template-rows: 1fr; }
.acc-a > div { overflow: hidden; }
.acc-a p { padding-bottom: 1.4rem; font-size: 0.95rem; margin-bottom: 0; max-width: 76ch; }

/* ------------------------------------------------------------ Forms */
.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(1.5rem, 1.1rem + 1.6vw, 2.6rem);
  box-shadow: var(--sh-1);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.1rem; }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field.full { grid-column: 1 / -1; }
.field label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.field label .req { color: #c0392b; }
.field input, .field select, .field textarea {
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 0.72rem 0.85rem;
  font-family: inherit;
  font-size: 0.93rem;
  color: var(--ink);
  background: #fff;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
  width: 100%;
}
.field textarea { resize: vertical; min-height: 118px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(44,110,132,.12);
}
.field select {
  appearance: none;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='7' viewBox='0 0 11 7'%3E%3Cpath d='M1 1l4.5 4.5L10 1' stroke='%238a9099' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 0.85rem center;
  padding-right: 2.4em;
}
.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem 1rem; }
.check-item { display: flex; align-items: flex-start; gap: 0.55rem; font-size: 0.89rem; cursor: pointer; }
.check-item input { width: auto; margin-top: 3px; accent-color: var(--accent); }
.form-foot { margin-top: 1.4rem; display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.form-note { font-size: var(--tiny); color: var(--muted); }
.form-success {
  display: none;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.2rem;
  border-radius: var(--r-sm);
  font-size: 0.9rem;
  color: var(--accent-ink);
  margin-bottom: 1.2rem;
}
.form-success.show { display: block; }

/* ------------------------------------------------------------ Table */
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.spec-table th, .spec-table td { padding: 0.72rem 0.9rem; text-align: left; border-bottom: 1px solid var(--line-2); vertical-align: top; }
.spec-table th {
  width: 34%;
  font-weight: 600;
  color: var(--ink);
  background: var(--bg-soft);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }

/* ------------------------------------------------------------ CTA band */
.cta-band {
  background: linear-gradient(120deg, var(--accent-ink), var(--accent) 55%, var(--accent-2));
  color: #d6dee2;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 88% 18%, rgba(176,141,87,.28), transparent 42%),
    radial-gradient(circle at 8% 88%, rgba(255,255,255,.07), transparent 45%);
}
.cta-band .wrap { position: relative; }
.cta-band h2 { color: #fff; }
.cta-band p { color: #c3d0d6; max-width: 620px; }
.cta-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-top: 1.8rem; }

/* ------------------------------------------------------------ Project card */
.proj-card {
  border-radius: var(--r);
  overflow: hidden;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  transition: box-shadow .3s var(--ease), transform .3s var(--ease);
}
.proj-card:hover { box-shadow: var(--sh-2); transform: translateY(-3px); }
.proj-img { aspect-ratio: 16/10; overflow: hidden; }
.proj-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .65s var(--ease); }
.proj-card:hover .proj-img img { transform: scale(1.05); }
.proj-body { padding: 1.3rem 1.4rem 1.5rem; }
.proj-type {
  font-size: 0.65rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 700;
  margin-bottom: 0.5rem;
  display: block;
}
.proj-body h4 { font-size: 1.06rem; margin-bottom: 0.45rem; }
.proj-body p { font-size: 0.9rem; margin-bottom: 0; }

/* ------------------------------------------------------------ Article card */
.art-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  height: 100%;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), transform .3s var(--ease);
}
.art-card:hover { border-color: transparent; box-shadow: var(--sh-2); transform: translateY(-3px); }
.art-img { aspect-ratio: 16/9; overflow: hidden; background: var(--bg-soft); }
.art-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .65s var(--ease); }
.art-card:hover .art-img img { transform: scale(1.05); }
.art-body { padding: 1.2rem 1.3rem 1.4rem; display: flex; flex-direction: column; flex: 1; }
.art-meta {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 0.6rem;
}
.art-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: currentColor; }
.art-body h4 { font-size: 1.02rem; line-height: 1.4; margin-bottom: 0.5rem; }
.art-body p { font-size: 0.89rem; margin-bottom: 0; }
.art-foot { margin-top: auto; padding-top: 1.1rem; }

/* Article body */
.article-body { max-width: 74ch; }
.article-body h2 { font-size: 1.5rem; margin-top: 2.4rem; }
.article-body h3 { font-size: 1.16rem; margin-top: 1.8rem; }
.article-body p { font-size: 1.02rem; line-height: 1.78; }
.article-body ul { margin: 0 0 1.3em; padding-left: 1.2rem; }
.article-body li { margin-bottom: 0.5rem; }
.article-body blockquote {
  margin: 1.8rem 0;
  padding: 1.1rem 1.4rem;
  border-left: 3px solid var(--gold);
  background: var(--bg-warm);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 1.02rem;
  color: var(--ink-3);
}
.article-body blockquote p:last-child { margin-bottom: 0; }

/* TOC */
.toc {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 1.2rem 1.3rem;
}
.toc h5 {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 0.8rem;
  font-weight: 800;
}
.toc a {
  display: block;
  font-size: 0.87rem;
  padding: 0.28rem 0;
  color: var(--body);
  transition: color .2s;
}
.toc a:hover { color: var(--accent); }

/* ------------------------------------------------------------ Footer */
.site-footer { background: var(--ink); color: #8f96a0; font-size: 0.9rem; }
.footer-main {
  padding-block: clamp(2.8rem, 2rem + 3vw, 4.6rem);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1.25fr;
  gap: clamp(1.6rem, 1rem + 2.4vw, 3rem);
}
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-sub { color: #6f7681; }
.footer-brand p { font-size: 0.87rem; margin-top: 1rem; line-height: 1.65; }
.footer-col h5 {
  color: #fff;
  font-size: 0.74rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  font-weight: 700;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.42rem; }
.footer-col a { color: #8f96a0; transition: color .2s var(--ease); font-size: 0.87rem; }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 0.55rem; align-items: flex-start; font-size: 0.87rem; line-height: 1.55; }
.footer-contact svg { width: 14px; height: 14px; flex: none; margin-top: 4px; opacity: .6; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.09);
  padding-block: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: var(--tiny);
}
.footer-bottom .fb-links { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.footer-bottom a { color: #8f96a0; }
.footer-bottom a:hover { color: #fff; }

/* ------------------------------------------------------------ Misc */
.tag-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  font-size: var(--tiny);
  padding: 0.34rem 0.7rem;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--body);
}
.tag.accent { background: var(--accent-soft); border-color: transparent; color: var(--accent-ink); font-weight: 600; }

.note-box {
  background: var(--bg-warm);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  padding: 1rem 1.2rem;
  font-size: 0.88rem;
  color: var(--body);
}
.note-box strong { color: var(--ink); display: block; margin-bottom: 0.25rem; font-size: 0.92rem; }

.img-frame { border-radius: var(--r); overflow: hidden; background: var(--bg-soft); }
.img-frame img { width: 100%; height: 100%; object-fit: cover; }
.img-tall { aspect-ratio: 4/5; }
.img-wide { aspect-ratio: 16/10; }
.img-square { aspect-ratio: 1; }

.divider { height: 1px; background: var(--line); border: none; margin-block: 0; }

.quote-block {
  font-family: var(--font-head);
  font-size: clamp(1.1rem, 0.95rem + 0.7vw, 1.45rem);
  line-height: 1.55;
  color: var(--ink);
  font-weight: 500;
}
.quote-attr { margin-top: 1.1rem; font-size: var(--tiny); color: var(--muted); }
.quote-attr strong { display: block; color: var(--ink); font-size: 0.88rem; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ------------------------------------------------------------ Responsive */
@media (max-width: 1180px) {
  .gallery-grid, .cat-tiles, .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .value-item:nth-child(2n) { border-right: none; }
  .value-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .g-5 { grid-template-columns: repeat(3, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ── 页眉导航独占第二行 ──
   导航横排需要约 900px，独立成行后从 1025px 到 2560px 都能完整显示。
   窄屏（≤1024px）切换为抽屉式，由下方媒体查询处理。 */
@media (min-width: 1025px) {
  .nav {
    justify-content: center;
    flex-wrap: wrap;
    padding-top: 0.5rem;
    border-top: 1px solid var(--line-2);
    row-gap: 0.15rem;
  }
}

@media (max-width: 1024px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(400px, 88vw);
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 5.5rem 1.4rem 2rem;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: -8px 0 40px rgba(0,0,0,.14);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .32s var(--ease), visibility .32s;
    z-index: 99;
  }
  .nav.open { transform: none; visibility: visible; }
  .nav-item { border-bottom: 1px solid var(--line-2); }
  .nav-link { padding: 0.95rem 0.2rem; justify-content: space-between; font-size: 1rem; }
  .mega {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0 0 1rem 0.6rem;
    min-width: 0;
    width: auto;
    max-width: none;
    display: none;
  }
  .nav-item:hover .mega { transform: none; }
  .nav-item.open .mega { display: block; }
  /* 抽屉内为单列堆叠，覆盖 JS 设置的 grid 列数 */
  .mega-inner {
    display: block !important;
    grid-template-columns: none !important;
  }
  .mega-col { max-width: none; margin-bottom: 1.1rem; }
  .mega-feature { display: none; }
  .mega-col > .mega-title { border-bottom: none; padding-bottom: 0; margin-bottom: 0.35rem; }
  .header-cta .btn span.hide-sm { display: none; }
  .nav-backdrop {
    position: fixed; inset: 0;
    background: rgba(15,20,25,.45);
    z-index: 98;
    opacity: 0; visibility: hidden;
    transition: opacity .3s var(--ease), visibility .3s;
  }
  .nav-backdrop.show { opacity: 1; visibility: visible; }
}

/* ── 顶部信息栏：随宽度逐步收敛次要信息 ──
   邮箱与电话始终保留，工厂介绍与营业时间按可用空间依次隐藏。 */
@media (max-width: 1200px) {
  .topbar-items .hide-md { display: none; }
}
@media (max-width: 860px) {
  .topbar-items .hide-sm { display: none; }
}

@media (max-width: 860px) {
  .split, .split-6040, .split-4060 { grid-template-columns: 1fr; }
  .listing-layout { grid-template-columns: 1fr; }
  .filter-panel { position: static; }
  .g-2, .g-3, .g-4, .g-5 { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .hero-points { grid-template-columns: 1fr; gap: 0.9rem; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .gallery-grid, .cat-tiles, .prod-grid, .g-2, .g-3, .g-4, .g-5 { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .value-item { border-right: none; border-bottom: 1px solid var(--line); }
  .value-item:last-child { border-bottom: none; }
  .process-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .check-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .topbar-items .hide-sm { display: none; }
  .brand-sub { display: none; }  .hero-actions .btn, .cta-actions .btn { flex: 1 1 100%; justify-content: center; }
  .listing-top { flex-direction: column; align-items: flex-start; }

  /* 移动端头部：品牌 + 汉堡在左，报价按钮在右，避免溢出 */
  .header-main {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "brand cta";
    gap: 0.6rem;
  }
  .header-cta { gap: 0.5rem; }
  .header-cta .btn-ghost { display: none; }
  .header-cta .btn-primary {
    padding: 0.7em 1em;
    font-size: 0.8rem;
    white-space: nowrap;
  }
  .nav-toggle { order: -1; }
  .brand-name { font-size: 1.05rem; }
  .brand-mark { width: 38px; height: 38px; font-size: 0.85rem; }
}

@media (max-width: 400px) {
  .header-cta .btn-primary { padding: 0.65em 0.85em; font-size: 0.75rem; }
  .brand-name { font-size: 0.98rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-header, .site-footer, .cta-band, .nav-backdrop { display: none !important; }
  body { color: #000; }
}

/* Accessibility and stable responsive media. */
.visual-h3{font-size:1.4rem}.visual-h4{font-size:1.08rem}.visual-h5{font-size:.95rem}
.footer-heading{font-family:inherit;font-size:.75rem;letter-spacing:.13em;text-transform:uppercase;color:#fff;margin:0 0 1rem}
.skip-link{position:absolute;left:12px;top:-100px;z-index:10000;background:#fff;padding:12px;color:#111}.skip-link:focus{top:12px}
:focus-visible{outline:3px solid #b27740;outline-offset:3px}img{height:auto}.spec-table{overflow-wrap:anywhere}.article-byline{font-size:.86rem;color:var(--muted)}
.analytics-choice{position:fixed;bottom:16px;left:16px;right:16px;max-width:600px;background:#fff;color:#222;border:1px solid #ddd;padding:20px;z-index:9999;box-shadow:0 8px 30px #0003}.analytics-choice[hidden]{display:none}.analytics-settings{background:none;border:0;color:inherit;text-decoration:underline;cursor:pointer}
@media(max-width:400px){.topbar-items{font-size:.68rem;gap:.5rem}.topbar-items a{overflow-wrap:anywhere}.wrap{max-width:100%}}

.btn-accent,.btn-accent:hover{color:#15191d}