/* ==========================================================================
   唐小禧官方网站 · 设计系统与样式表
   移动端优先；断点：≥640px 平板、≥960px 桌面、≥1200px 宽屏
   配色源自品牌 VI 手册：品牌紫 + 香槟金
   ========================================================================== */

/* ---------------------------------------------------------------- 设计令牌 */
:root {
  /* 主色（取自 VI 手册紫色体系） */
  --brand: #692a7e;
  --brand-600: #7b3a91;
  --brand-700: #4f1d60;
  --brand-800: #3a1447;
  --brand-900: #260d2f;

  /* 辅助金（取自 VI 手册暖金色） */
  --gold: #b49c6c;
  --gold-300: #d8c49c;
  --gold-500: #a68d5c;
  --gold-text: #8a6d3b; /* 浅底上的金色文字，满足对比度 */

  /* 中性 */
  --cream: #faf7f3;
  --cream-2: #f3ede5;
  --paper: #ffffff;
  --ink: #221c26;
  --ink-soft: #5f5666;
  --ink-mute: #8a8292;
  --line: #ebe5dd;
  --line-soft: #f2ece4;

  --ok: #2f7d5d;
  --warn: #b25c1c;

  /* 排版 */
  --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;

  /* 尺寸 */
  --wrap: 1200px;
  --wrap-narrow: 820px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 4px;
  --radius-lg: 8px;

  --shadow-sm: 0 1px 2px rgba(38, 13, 47, 0.05), 0 2px 8px rgba(38, 13, 47, 0.04);
  --shadow-md: 0 4px 12px rgba(38, 13, 47, 0.07), 0 12px 32px rgba(38, 13, 47, 0.06);
  --shadow-lg: 0 12px 40px rgba(38, 13, 47, 0.14);

  --header-h: 60px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------------------------------------------------------------- 基础重置 */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

img,
picture,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.35;
  margin: 0;
  letter-spacing: 0.01em;
}

p {
  margin: 0 0 1em;
}

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.25em;
}

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

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

/* 屏幕阅读器专用 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 999;
  padding: 10px 18px;
  background: var(--brand);
  color: #fff;
  border-radius: var(--radius);
  transition: top 0.2s;
}

.skip-link:focus {
  top: 12px;
}

/* ---------------------------------------------------------------- 布局 */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wrap-narrow {
  width: 100%;
  max-width: var(--wrap-narrow);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(48px, 8vw, 96px);
}

.section--tight {
  padding-block: clamp(36px, 6vw, 64px);
}

.section--paper {
  background: var(--paper);
}

.section--dark {
  background: var(--brand-900);
  color: #f4eef7;
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: #fff;
}

/* 章节标题 */
.section-head {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.section-head--center {
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-text);
  font-family: var(--font-sans);
  margin-bottom: 12px;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--gold);
}

.section-head--center .eyebrow::after {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--gold);
}

.section-title {
  font-size: clamp(22px, 4.4vw, 34px);
}

.section-sub {
  margin-top: 14px;
  color: var(--ink-soft);
  max-width: 62ch;
  font-size: 15px;
}

.section-head--center .section-sub {
  margin-inline: auto;
}

/* ---------------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s, color 0.2s,
    border-color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
  background: none;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 4px 14px rgba(105, 42, 126, 0.24);
}

.btn--primary:hover {
  background: var(--brand-700);
}

.btn--gold {
  background: var(--gold);
  color: #2b2110;
}

.btn--gold:hover {
  background: var(--gold-500);
}

.btn--ghost {
  border-color: var(--line);
  background: var(--paper);
  color: var(--ink);
}

.btn--ghost:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.btn--on-dark {
  border-color: rgba(255, 255, 255, 0.32);
  color: #fff;
}

.btn--on-dark:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn--block {
  width: 100%;
}

.btn--sm {
  padding: 9px 18px;
  font-size: 13px;
}

/* ---------------------------------------------------------------- 顶栏 */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background 0.3s var(--ease), box-shadow 0.3s, backdrop-filter 0.3s;
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.header.is-solid {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(1.6) blur(12px);
  box-shadow: 0 1px 0 var(--line);
}

.header__logo {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.header__logo img {
  height: 30px;
  width: auto;
  transition: filter 0.3s;
}

.header--over .header__logo img {
  filter: brightness(0) invert(1) opacity(0.95);
}

.header.is-solid .header__logo img {
  filter: none;
}

.header__nav {
  display: none;
  margin-left: auto;
  align-items: center;
  gap: 2px;
}

.header__link {
  position: relative;
  padding: 8px 13px;
  font-size: 14px;
  border-radius: var(--radius);
  color: rgba(255, 255, 255, 0.9);
  transition: color 0.2s, background 0.2s;
}

.header.is-solid .header__link {
  color: var(--ink);
}

.header__link:hover {
  color: #fff;
}

.header.is-solid .header__link:hover {
  color: var(--brand);
}

.header__link[aria-current="page"] {
  color: #fff;
}

.header.is-solid .header__link[aria-current="page"] {
  color: var(--brand);
}

.header__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 2px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
}

.header__cta {
  display: none;
  margin-left: 10px;
}

/* 汉堡按钮 */
.burger {
  margin-left: auto;
  width: 42px;
  height: 42px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 0;
  background: none;
  cursor: pointer;
  border-radius: var(--radius);
}

.burger span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: #fff;
  transition: transform 0.3s var(--ease), opacity 0.2s;
}

.header.is-solid .burger span {
  background: var(--ink);
}

.burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* 移动端抽屉 */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--brand-900);
  padding: calc(var(--header-h) + 28px) var(--gutter) 40px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.36s var(--ease);
  visibility: hidden;
}

.drawer.is-open {
  transform: translateX(0);
  visibility: visible;
}

.drawer__list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
}

.drawer__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 0;
  font-size: 17px;
  color: #f0e9f4;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-family: var(--font-serif);
}

.drawer__list a::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1px solid var(--gold-300);
  border-bottom: 1px solid var(--gold-300);
  transform: rotate(-45deg);
  opacity: 0.7;
}

.drawer__contact {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  line-height: 2;
}

.drawer__contact strong {
  color: var(--gold-300);
  font-weight: 500;
}

/* ---------------------------------------------------------------- 首屏 */
.hero {
  position: relative;
  min-height: clamp(520px, 88vh, 760px);
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  background:
    radial-gradient(120% 90% at 78% 12%, rgba(142, 80, 166, 0.55) 0%, rgba(142, 80, 166, 0) 55%),
    radial-gradient(90% 70% at 12% 92%, rgba(180, 156, 108, 0.22) 0%, rgba(180, 156, 108, 0) 60%),
    linear-gradient(160deg, var(--brand-900) 0%, var(--brand-800) 42%, var(--brand-700) 100%);
  color: #fff;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(80% 70% at 50% 40%, #000 30%, transparent 100%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
  width: 100%;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  border: 1px solid rgba(216, 196, 156, 0.42);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-300);
  margin-bottom: 22px;
}

.hero__title {
  font-size: clamp(30px, 8vw, 56px);
  line-height: 1.22;
  letter-spacing: 0.02em;
  color: #fff;
}

.hero__title em {
  font-style: normal;
  color: var(--gold-300);
}

.hero__desc {
  margin-top: 20px;
  font-size: clamp(14px, 3.4vw, 16px);
  color: rgba(244, 238, 247, 0.82);
  max-width: 46ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 13px;
  color: rgba(244, 238, 247, 0.7);
}

.hero__meta b {
  display: block;
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--gold-300);
  font-weight: 600;
  line-height: 1.4;
}

/* 首屏右侧视觉卡 */
.hero__visual {
  position: relative;
  display: none;
}

.hero__frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(216, 196, 156, 0.28);
}

.hero__frame img {
  width: 100%;
  /* 首屏源图是 3366×4273 的竖构图，按原比例展示时高度会远超左侧文案。
     构建脚本已把它裁成 1:1 方图，这里同步用方形画框，视觉上与文案块等高。 */
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center 40%;
}

.hero__seal {
  position: absolute;
  right: -14px;
  bottom: -14px;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: var(--gold);
  color: #2b2110;
  display: grid;
  place-content: center;
  text-align: center;
  font-size: 11px;
  line-height: 1.3;
  letter-spacing: 0.06em;
  box-shadow: var(--shadow-md);
}

.hero__seal b {
  display: block;
  font-family: var(--font-serif);
  font-size: 17px;
}

/* ---------------------------------------------------------------- 通用卡片 */
.grid {
  display: grid;
  gap: clamp(14px, 2.4vw, 24px);
}

.grid--2 {
  grid-template-columns: 1fr;
}

.grid--3 {
  grid-template-columns: 1fr;
}

.grid--4 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold-300);
}

.card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(150deg, var(--cream-2), #fff);
  overflow: hidden;
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.card:hover .card__media img {
  transform: scale(1.04);
}

.card__body {
  padding: 16px 18px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card__title {
  font-size: 16px;
  margin-bottom: 6px;
}

.card__text {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 0;
  flex: 1;
}

.card__foot {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: var(--gold-text);
}

/* 系列分类卡 */
.cat-card {
  position: relative;
  padding: 22px 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: border-color 0.3s, transform 0.3s var(--ease), box-shadow 0.3s;
}

.cat-card:hover {
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.cat-card__num {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--gold-text);
  letter-spacing: 0.12em;
}

.cat-card h3 {
  font-size: 17px;
  margin: 10px 0 8px;
}

.cat-card p {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 0;
}

/* ---------------------------------------------------------------- 产品网格 */
.product-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold-300);
}

.product-card__media {
  aspect-ratio: 1 / 1;
  /* 缩略图已由构建脚本「去留白 + 居中」处理成白底方形，这里用白底即可无缝衔接 */
  background: var(--paper);
  overflow: hidden;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.product-card:hover .product-card__media img {
  transform: scale(1.05);
}

/* 暂无实拍图的产品：卡片照常可点进详情页，媒体区用字样占位，不留破图 */
.product-card__media--mark {
  display: grid;
  place-items: center;
  background: var(--cream-2);
}

.product-card__media--mark span {
  width: 88px;
  height: 88px;
  display: grid;
  place-items: center;
  border: 1px solid var(--gold-300);
  border-radius: 50%;
  background: var(--paper);
  font-family: var(--font-serif);
  font-size: 34px;
  line-height: 1;
  color: var(--gold-text);
}

/* 详情页暂无实拍图时的占位块 */
.pd__main--placeholder {
  display: grid;
  place-content: center;
  gap: 14px;
  aspect-ratio: 1 / 1;
  border: 1px dashed var(--line);
  border-radius: var(--radius-lg);
  background: var(--cream-2);
  text-align: center;
  color: var(--ink);
}

.pd__main--placeholder p {
  margin: 0;
  font-size: 13.5px;
}

.pd__main--placeholder small {
  font-size: 12px;
  opacity: 0.72;
}

.pd__mark {
  width: 96px;
  height: 96px;
  margin-inline: auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--gold-300);
  border-radius: 50%;
  background: var(--paper);
  font-family: var(--font-serif);
  font-size: 38px;
  color: var(--gold-text);
}

/* ------------------------------------------------- 应用场景 / 适配人群卡片 */
.info-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
}

.info-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold-300);
}

.info-card__media {
  position: relative;
  display: block;
  width: 100%;
  /* 与图片管线生成的 3:4 封面一致，浏览器不必再做二次裁切 */
  aspect-ratio: 3 / 4;
  margin: 0;
  padding: 0;
  border: 0;
  overflow: hidden;
  background: var(--cream-2);
  font: inherit;
  color: inherit;
  text-align: inherit;
}

/* 有场景海报时媒体区是可点按钮，用 zoom-in 光标提示可以放大翻阅 */
.info-card__media[data-info-gallery] {
  cursor: zoom-in;
}

.info-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.info-card__hint {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(105, 42, 126, 0.88);
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.06em;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.info-card:hover .info-card__hint,
.info-card__media:focus-visible .info-card__hint {
  opacity: 1;
  transform: none;
}

.info-card__media:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.info-card:hover .info-card__media img {
  transform: scale(1.05);
}

/* 暂无配图时的字样视觉：企业把图放进 图片素材/场景图|人群图/ 后自动替换 */
.info-card__media--mark {
  display: grid;
  place-items: center;
}

.info-card__media--mark span {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border: 1px solid var(--gold-300);
  border-radius: 50%;
  background: var(--paper);
  font-family: var(--font-serif);
  font-size: 25px;
  line-height: 1;
  color: var(--gold-text);
}

.info-card__body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.info-card__name {
  font-size: 16px;
  margin: 0 0 8px;
}

.info-card__desc {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin: 0;
}

/* 产品页里的成组标签（适配人群 / 应用场景） */
.tag-block {
  margin-bottom: 16px;
}

.tag-block__label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-text);
  margin-bottom: 7px;
}

.product-card__body {
  padding: 14px 15px 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card__series {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold-text);
  margin-bottom: 6px;
}

.product-card__name {
  font-size: 15px;
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 6px;
}

.product-card__spec {
  font-size: 12.5px;
  color: var(--ink-mute);
  margin: 0 0 10px;
  min-height: 1.4em;
}

.product-card__price {
  margin-top: auto;
  font-size: 12.5px;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.product-card__price::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--gold);
}

/* 筛选栏 */
.filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  margin-bottom: 26px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.filters::-webkit-scrollbar {
  display: none;
}

.chip {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: 999px;
  font-size: 13.5px;
  cursor: pointer;
  color: var(--ink-soft);
  transition: all 0.2s;
  white-space: nowrap;
}

.chip:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.chip[aria-pressed="true"] {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

.empty-hint {
  padding: 48px 20px;
  text-align: center;
  color: var(--ink-mute);
  font-size: 14px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-lg);
}

/* ---------------------------------------------------------------- 产品详情 */
.pd {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.pd__gallery {
  position: relative;
}

.pd__main {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  cursor: zoom-in;
}

.pd__main img {
  width: 100%;
  aspect-ratio: 1 / 1;
  /* 画廊里横图、竖图、方图混合，用 contain 保证产品完整可见、不被裁切 */
  object-fit: contain;
}

.pd__thumbs {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.pd__thumbs::-webkit-scrollbar {
  display: none;
}

.pd__thumb {
  flex: 0 0 72px;
  width: 72px;
  height: 72px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 0;
  cursor: pointer;
  transition: border-color 0.2s;
}

.pd__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pd__thumb[aria-current="true"] {
  border-color: var(--brand);
  box-shadow: 0 0 0 1px var(--brand);
}

.pd__title {
  font-size: clamp(21px, 5vw, 30px);
  margin-bottom: 10px;
}

.pd__tagline {
  font-size: 15px;
  color: var(--gold-text);
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}

.pd__summary {
  color: var(--ink-soft);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 20px;
}

.spec-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.spec-list li {
  display: flex;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}

.spec-list dt,
.spec-list .k {
  flex: 0 0 84px;
  color: var(--ink-mute);
  font-size: 13px;
}

.spec-list .v {
  flex: 1;
  color: var(--ink);
}

.hl-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.hl-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 9px;
  font-size: 14px;
  color: var(--ink-soft);
}

.hl-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

.notice {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  background: var(--cream-2);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.notice strong {
  color: var(--ink);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.tag {
  font-size: 12px;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--cream-2);
  color: var(--ink-soft);
}

/* 灯箱 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(20, 8, 26, 0.94);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lightbox.is-open {
  display: flex;
}

.lightbox img {
  max-width: 100%;
  max-height: 84vh;
  object-fit: contain;
  border-radius: var(--radius);
}

.lightbox__close,
.lightbox__nav {
  position: absolute;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.24);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-content: center;
  font-size: 18px;
  transition: background 0.2s;
}

.lightbox__close:hover,
.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.24);
}

.lightbox__close {
  top: 18px;
  right: 18px;
}

.lightbox__nav--prev {
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__nav--next {
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__count {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  letter-spacing: 0.1em;
}

/* ---------------------------------------------------------------- 产品详情长图 */
/* 电商详情长图按序号无缝拼接，形成连续阅读的详情页 */
.detail-strip {
  max-width: 760px;
  margin-inline: auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--shadow-sm);
}

.detail-strip img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
}

.detail-strip img + img {
  margin-top: -1px; /* 消除拼接处的亚像素缝隙 */
}

@media (max-width: 639px) {
  .detail-strip {
    border-radius: 0;
    box-shadow: none;
    max-width: none;
    margin-inline: calc(var(--gutter) * -1);
  }
}

/* ---------------------------------------------------------------- 面包屑 */
.crumb {
  font-size: 12.5px;
  color: var(--ink-mute);
  padding: 14px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
}

.crumb a:hover {
  color: var(--brand);
}

.crumb span[aria-hidden] {
  opacity: 0.5;
}

/* 内页头部 */
.page-head {
  background: linear-gradient(150deg, var(--brand-900), var(--brand-700));
  color: #fff;
  padding-top: calc(var(--header-h) + clamp(32px, 6vw, 60px));
  padding-bottom: clamp(32px, 6vw, 60px);
  position: relative;
  overflow: hidden;
}

.page-head::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(216, 196, 156, 0.24);
  border-radius: 50%;
}

.page-head .crumb {
  color: rgba(255, 255, 255, 0.62);
  padding-top: 0;
}

.page-head .crumb a:hover {
  color: var(--gold-300);
}

.page-head h1 {
  font-size: clamp(24px, 5.4vw, 40px);
  color: #fff;
}

.page-head p {
  margin: 14px 0 0;
  max-width: 62ch;
  color: rgba(244, 238, 247, 0.78);
  font-size: 15px;
}

/* ---------------------------------------------------------------- 内容排版 */
.prose {
  font-size: 15.5px;
  line-height: 1.95;
  color: #322b37;
}

.prose h2 {
  font-size: clamp(18px, 3.6vw, 22px);
  margin: 2.2em 0 0.8em;
  padding-left: 14px;
  border-left: 3px solid var(--gold);
}

.prose h2:first-child {
  margin-top: 0;
}

.prose h3 {
  font-size: 17px;
  margin: 1.8em 0 0.7em;
  color: var(--brand-700);
}

.prose ul,
.prose ol {
  padding-left: 1.3em;
}

.prose li {
  margin-bottom: 0.5em;
}

.prose strong {
  color: var(--brand-700);
  font-weight: 600;
}

.prose blockquote {
  margin: 1.6em 0;
  padding: 16px 20px;
  background: var(--cream-2);
  border-left: 3px solid var(--brand);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink-soft);
  font-size: 14.5px;
}

.prose a {
  color: var(--brand);
  border-bottom: 1px solid var(--gold-300);
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2.4em 0;
}

/* 文章列表 */
.article-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold-300);
}

.article-card__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--cream-2);
}

.article-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.article-card:hover .article-card__media img {
  transform: scale(1.04);
}

.article-card__body {
  padding: 18px 20px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-card__meta {
  font-size: 12px;
  color: var(--ink-mute);
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.article-card__meta em {
  font-style: normal;
  color: var(--gold-text);
}

.article-card__title {
  font-size: 17px;
  margin-bottom: 10px;
}

.article-card__excerpt {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 0;
  flex: 1;
}

.article-card__more {
  margin-top: 14px;
  font-size: 13px;
  color: var(--brand);
}

/* ---------------------------------------------------------------- 表单 */
.form {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 7px;
}

.field > label {
  font-size: 13.5px;
  color: var(--ink-soft);
}

.field .req {
  color: var(--warn);
  margin-left: 2px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  font-size: 15px; /* ≥16px 避免 iOS 缩放，15px 配合 viewport 设置可接受 */
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(105, 42, 126, 0.1);
}

.field textarea {
  min-height: 110px;
  resize: vertical;
}

.field .err {
  font-size: 12.5px;
  color: var(--warn);
  min-height: 1.2em;
}

.field.has-error input,
.field.has-error select,
.field.has-error textarea {
  border-color: var(--warn);
}

.checkbox {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.65;
}

.checkbox input {
  width: 17px;
  height: 17px;
  margin-top: 3px;
  flex: 0 0 auto;
  accent-color: var(--brand);
}

.form__grid {
  display: grid;
  gap: 16px;
}

.form-note {
  font-size: 12.5px;
  color: var(--ink-mute);
  line-height: 1.7;
}

/* 提交结果提示 */
.form-alert {
  display: none;
  padding: 14px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.7;
}

.form-alert.is-visible {
  display: block;
}

.form-alert--ok {
  background: rgba(47, 125, 93, 0.08);
  border: 1px solid rgba(47, 125, 93, 0.28);
  color: #23624a;
}

.form-alert--err {
  background: rgba(178, 92, 28, 0.08);
  border: 1px solid rgba(178, 92, 28, 0.28);
  color: #8a4715;
}

/* ---------------------------------------------------------------- 联系信息 */
.info-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.info-list li {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}

.info-list .k {
  flex: 0 0 76px;
  color: var(--ink-mute);
  font-size: 13px;
  padding-top: 2px;
}

.info-list .v {
  flex: 1;
  color: var(--ink);
}

.info-list .v a:hover {
  color: var(--brand);
}

.qr-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.qr-box {
  text-align: center;
  padding: 18px 12px;
  background: var(--paper);
  border: 1px dashed var(--line);
  border-radius: var(--radius-lg);
}

.qr-box img {
  width: 108px;
  height: 108px;
  margin: 0 auto 10px;
  object-fit: contain;
  /* 二维码需要白底才容易扫 */
  background: var(--paper);
  border-radius: var(--radius);
}

.qr-box__ph {
  width: 108px;
  height: 108px;
  margin: 0 auto 10px;
  display: grid;
  place-content: center;
  background: var(--cream-2);
  border-radius: var(--radius);
  color: var(--ink-mute);
  font-size: 11px;
  line-height: 1.5;
  padding: 8px;
}

.qr-box p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------------- 荣誉与合作 */
.honor-list {
  display: grid;
  gap: 12px;
}

.honor {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  font-size: 14.5px;
}

.honor__mark {
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: grid;
  place-content: center;
  background: rgba(105, 42, 126, 0.08);
  color: var(--brand);
  font-family: var(--font-serif);
  font-size: 13px;
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.partner {
  padding: 14px 12px;
  text-align: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13.5px;
  color: var(--ink-soft);
  transition: border-color 0.2s, color 0.2s;
}

.partner:hover {
  border-color: var(--gold-300);
  color: var(--ink);
}

/* ---------------------------------------------------------------- 数字条 */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.stat {
  background: var(--paper);
  padding: 22px 18px;
  text-align: center;
}

.stat b {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(24px, 5vw, 32px);
  color: var(--brand);
  line-height: 1.3;
}

.stat span {
  font-size: 12.5px;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
}

.section--dark .stats {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.12);
}

.section--dark .stat {
  background: transparent;
}

.section--dark .stat b {
  color: var(--gold-300);
}

.section--dark .stat span {
  color: rgba(244, 238, 247, 0.72);
}

/* ---------------------------------------------------------------- 步骤 / 时间线 */
.steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.steps li {
  position: relative;
  padding-left: 48px;
  counter-increment: step;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  color: var(--gold-text);
  display: grid;
  place-content: center;
  font-size: 12px;
  font-family: var(--font-serif);
}

.steps h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.steps p {
  font-size: 13.8px;
  color: var(--ink-soft);
  margin: 0;
}

/* FAQ */
.faq {
  border-top: 1px solid var(--line);
}

.faq__item {
  border-bottom: 1px solid var(--line);
}

.faq__q {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-size: 15.5px;
  font-family: var(--font-serif);
  color: var(--ink);
}

.faq__q::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-right: 1.5px solid var(--gold-500);
  border-bottom: 1.5px solid var(--gold-500);
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease);
}

.faq__q[aria-expanded="true"]::after {
  transform: rotate(-135deg);
}

.faq__a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.34s var(--ease);
}

.faq__a[data-open="true"] {
  grid-template-rows: 1fr;
}

.faq__a > div {
  overflow: hidden;
}

.faq__a p {
  font-size: 14.2px;
  color: var(--ink-soft);
  padding-bottom: 18px;
  margin: 0;
}

/* ---------------------------------------------------------------- 品牌画册 */
.brochure-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.brochure-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
  padding: 0;
  cursor: zoom-in;
  transition: border-color 0.2s, transform 0.3s var(--ease);
}

.brochure-item:hover {
  border-color: var(--gold-300);
  transform: translateY(-2px);
}

.brochure-item img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.brochure-item span {
  display: block;
  padding: 8px 10px;
  font-size: 11.5px;
  color: var(--ink-mute);
  text-align: center;
}

/* ---------------------------------------------------------------- 引用区块 */
.quote {
  position: relative;
  padding: clamp(28px, 5vw, 48px) clamp(22px, 4vw, 44px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  font-family: var(--font-serif);
  font-size: clamp(16px, 3.4vw, 20px);
  line-height: 1.85;
  color: var(--brand-800);
}

.quote::before {
  content: "\201C";
  position: absolute;
  top: 6px;
  left: 18px;
  font-family: var(--font-serif);
  font-size: 64px;
  line-height: 1;
  color: var(--gold-300);
  opacity: 0.7;
}

.quote cite {
  display: block;
  margin-top: 16px;
  font-size: 13px;
  font-style: normal;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
}

/* ---------------------------------------------------------------- CTA 条 */
.cta {
  background:
    radial-gradient(90% 120% at 85% 15%, rgba(142, 80, 166, 0.5), transparent 60%),
    linear-gradient(140deg, var(--brand-900), var(--brand-700));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(28px, 5vw, 52px);
  display: grid;
  gap: 24px;
  align-items: center;
}

.cta h2 {
  color: #fff;
  font-size: clamp(20px, 4.4vw, 28px);
}

.cta p {
  margin: 12px 0 0;
  color: rgba(244, 238, 247, 0.8);
  font-size: 14.5px;
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------------------------------------------------------------- 页脚 */
.footer {
  background: var(--brand-900);
  color: rgba(244, 238, 247, 0.66);
  padding: clamp(40px, 7vw, 64px) 0 0;
  font-size: 13.5px;
}

.footer__grid {
  display: grid;
  gap: 32px;
}

.footer h3 {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold-300);
  margin-bottom: 16px;
  font-weight: 500;
}

.footer__logo {
  height: 30px;
  width: auto;
  margin-bottom: 16px;
}

/* 页脚小程序入口：价格与下单都在「小禧云仓」 */
.footer__qr {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.footer__qr img {
  width: 86px;
  height: 86px;
  background: var(--paper);
  border-radius: var(--radius);
  flex: 0 0 auto;
}

.footer__qr span {
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(216, 196, 156, 0.92);
  max-width: 15ch;
}

.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer li {
  margin-bottom: 10px;
}

.footer a:hover {
  color: var(--gold-300);
}

.footer__bottom {
  margin-top: 40px;
  padding: 22px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 12.5px;
  display: grid;
  gap: 10px;
  color: rgba(244, 238, 247, 0.5);
}

.footer__bottom a:hover {
  color: var(--gold-300);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

/* ---------------------------------------------------------------- 移动端底部操作条 */
.mobile-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom, 0);
  transform: translateY(120%);
  transition: transform 0.3s var(--ease);
}

.mobile-bar.is-visible {
  transform: translateY(0);
}

.mobile-bar a,
.mobile-bar button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 13px;
  background: var(--paper);
  border: 0;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
}

.mobile-bar .is-primary {
  background: var(--brand);
  color: #fff;
}

/* ---------------------------------------------------------------- 返回顶部 */
.to-top {
  position: fixed;
  right: 16px;
  bottom: 76px;
  z-index: 89;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-soft);
  cursor: pointer;
  display: grid;
  place-content: center;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
}

.to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.to-top:hover {
  transform: translateY(-2px);
  color: var(--brand);
  border-color: var(--brand);
}

/* ---------------------------------------------------------------- 提示条 */
.toast {
  position: fixed;
  left: 50%;
  bottom: 92px;
  transform: translate(-50%, 20px);
  z-index: 210;
  background: var(--brand-900);
  color: #fff;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 13.5px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s var(--ease);
  max-width: calc(100vw - 32px);
  text-align: center;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------------------------------------------------------------- 滚动入场 */
/* 由 JS 仅对「首屏之外」的元素动态添加 .reveal--pending。
   这样首屏内容永远不会被隐藏；即使 JS 完全失效，页面也完整可见。 */
.reveal--pending {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal--pending.is-in {
  opacity: 1;
  transform: none;
}

/* ---------------------------------------------------------------- 响应式 */
@media (min-width: 640px) {
  body {
    font-size: 15.5px;
  }

  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(3, 1fr);
  }

  .partner-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .qr-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .brochure-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .form__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .form__grid .field--full {
    grid-column: 1 / -1;
  }

  .honor-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .cta {
    grid-template-columns: 1fr auto;
  }

  .footer__bottom {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 960px) {
  :root {
    --header-h: 72px;
  }

  body {
    font-size: 16px;
  }

  .header__nav {
    display: flex;
  }

  .header__cta {
    display: inline-flex;
  }

  .burger {
    display: none;
  }

  .hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .hero__visual {
    display: block;
  }

  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .pd {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .pd__gallery {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .mobile-bar {
    display: none;
  }

  .to-top {
    bottom: 28px;
  }

  .footer__grid {
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 40px;
  }

  .brochure-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .form__grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .two-col--wide-left {
    grid-template-columns: 1.25fr 0.75fr;
  }

  .three-col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(20px, 3vw, 32px);
    align-items: start;
  }

  .sticky-side {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (min-width: 1200px) {
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------------------------------------------------------------- 动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal,
  .reveal--pending {
    opacity: 1;
    transform: none;
  }
}

/* ---------------------------------------------------------------- 打印 */
@media print {
  .header,
  .drawer,
  .mobile-bar,
  .to-top,
  .cta__actions,
  .lightbox {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .hero,
  .page-head,
  .section--dark,
  .footer {
    background: #fff !important;
    color: #000 !important;
  }
}