/* ==========================================================================
   DESERT HAMSTER — 视觉样稿 v2 · Geepas 风格
   参考：https://geepas.co.uk/
   仅借鉴其字体层级、色彩、间距节奏与组件语言；
   未复制其商标、图片、文案、商品数据或价格。
   --------------------------------------------------------------------------
     01 字体        02 设计令牌     03 基础与排版   04 布局与栅格
     05 按钮        06 公告条       07 页头         08 信任条
     09 首屏        10 评分条       11 区块标题     12 标签切换
     13 产品卡      14 分类卡       15 优势条       16 图文块
     17 指南卡      18 优惠区       19 页脚         20 内页头
     21 面包屑      22 产品详情     23 表单         24 移动底栏
     25 预览标识    26 动效         27 响应式       28 RTL
   ========================================================================== */

/* 01 字体 ----------------------------------------------------------------- */
@font-face {
  font-family: "Archivo";
  src: url("fonts/archivo-latin.woff2") format("woff2");
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("fonts/inter-latin.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

/* 02 设计令牌 ------------------------------------------------------------- */
:root {
  /* 主色：品牌蓝 */
  --brand: #0063c8;
  --brand-hover: #0052a6;
  --brand-soft: #e7f0fa;
  --brand-loud: #0063c8;
  --brand-on-dark: #6fb0ff;

  /* 配套灰：次级信息、图标、分隔与边框 */
  --sage: #778976;
  --sage-tint: #eaeee9;

  --ink: #23292b;
  --ink-strong: #16191b;
  --ink-dark: #1e2326;
  --muted: #5f6a67;
  --muted-2: #778976;      /* 配套灰：用于参数/参考号等次级信息 */
  --line: #e3e6e5;
  --line-strong: #cbd1cd;
  --surface: #f2f4f1;
  --cream: #eaeee9;
  --white: #fff;

  --r-lg: 16px;
  --r-md: 12px;
  --r-sm: 8px;
  --r-pill: 999px;

  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans Arabic", "Noto Naskh Arabic", Tahoma,
    sans-serif;
  --font-display: "Archivo", "Inter", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, Arial, sans-serif;

  --gutter: 40px;
  --container: 1600px;
  --breather: 64px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --t-fast: 0.18s;
  --t-mid: 0.32s;

  --shadow-1: 0 1px 2px rgba(22, 25, 27, 0.05), 0 8px 24px rgba(22, 25, 27, 0.06);
  --shadow-2: 0 18px 48px rgba(22, 25, 27, 0.14);
}

/* 03 基础与排版 ----------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

h1,
h2,
h3,
h4,
h5 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--ink-strong);
  line-height: 1.02;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 04 布局与栅格 ----------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--breather);
}

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

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

.section--tight {
  padding-block: 40px;
}

.grid {
  display: grid;
  gap: 24px;
}

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

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

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

.center {
  text-align: center;
}

.lede {
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink);
}

.note {
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
}

/* 05 按钮 ---------------------------------------------------------------- */
.btn {
  --btn-h: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: var(--btn-h);
  padding-inline: 28px;
  border-radius: var(--r-md);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  white-space: nowrap;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

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

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

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

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

.btn--dark:hover {
  background: var(--ink-strong);
}

.btn--white {
  background: #fff;
  color: var(--brand);
}

.btn--white:hover {
  background: var(--cream);
}

.btn--outline {
  border: 1.5px solid var(--ink-strong);
  color: var(--ink-strong);
}

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

.btn--ghost-light {
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}

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

.btn--pill {
  border-radius: var(--r-pill);
}

.btn--sm {
  --btn-h: 44px;
  padding-inline: 22px;
  font-size: 13px;
  letter-spacing: 0.1em;
}

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

/* 06 公告条 --------------------------------------------------------------- */
.announce {
  background: var(--brand);
  color: #fff;
}

.announce__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-height: 46px;
  padding-block: 8px;
}

.announce__text {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  text-align: center;
  transition: opacity var(--t-mid) var(--ease);
}

.announce__text.is-fading {
  opacity: 0;
}

.announce__arrow {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.85);
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.announce__arrow:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
}

.announce__arrow svg {
  width: 16px;
  height: 16px;
}

/* 07 页头 ---------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.header-top__inner {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 84px;
  padding-block: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
  color: var(--ink-strong);
}

.brand__mark {
  display: block;
  height: 52px;
  width: auto;
  flex: none;
}

.brand__word {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1;
  text-transform: uppercase;
}

.brand__reg {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  margin-top: 2px;
}

.brand__tile {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--ink-dark);
  color: #fff;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.02em;
  flex: none;
}

.search {
  position: relative;
  flex: 1 1 auto;
  max-width: 520px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  padding-inline: 16px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1.5px solid transparent;
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.search:focus-within {
  background: #fff;
  border-color: var(--ink-strong);
}

.search__icon {
  width: 18px;
  height: 18px;
  flex: none;
  color: var(--muted);
}

.search__input {
  width: 100%;
  border: 0;
  background: none;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  outline: none;
}

.search__input::placeholder {
  color: var(--muted-2);
}

.header-actions {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  flex: none;
}

.icon-action {
  display: grid;
  justify-items: center;
  gap: 5px;
  min-width: 78px;
  padding: 6px 6px 4px;
  border-radius: var(--r-sm);
  color: var(--ink-strong);
  transition: background var(--t-fast) var(--ease);
}

.icon-action:hover {
  background: var(--surface);
}

.icon-action__icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
}

.icon-action__icon svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-action__label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  line-height: 1.15;
  text-align: center;
}

.icon-action__badge {
  position: absolute;
  inset-block-start: -5px;
  inset-inline-end: -8px;
  display: grid;
  place-items: center;
  min-width: 18px;
  height: 18px;
  padding-inline: 4px;
  border-radius: var(--r-pill);
  background: var(--brand);
  color: #fff;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
}

.header-nav {
  border-top: 1px solid var(--line);
}

.header-nav__inner {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav {
  flex: 1 1 auto;
  min-width: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.nav__link {
  position: relative;
  display: inline-block;
  padding-block: 16px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-strong);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: 10px;
  height: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-mid) var(--ease);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav__link--accent {
  color: var(--brand);
}

.header-tools {
  flex: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 12px;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.lang-switch a {
  padding: 3px 2px;
  transition: color var(--t-fast) var(--ease);
}

.lang-switch a:hover,
.lang-switch a.is-active {
  color: var(--ink-strong);
}

.lang-switch a.is-active {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.lang-switch span {
  color: var(--line-strong);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: var(--r-sm);
  color: var(--ink-strong);
}

.nav-toggle:hover {
  background: var(--surface);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin-block: 2.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--t-mid) var(--ease), opacity var(--t-fast) var(--ease);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端抽屉 */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  grid-template-rows: auto 1fr;
  background: #fff;
  transform: translateY(-6%);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease),
    visibility var(--t-mid);
  overflow-y: auto;
}

.drawer.is-open {
  opacity: 1;
  transform: none;
  visibility: visible;
}

.drawer[hidden] {
  display: grid;
}

.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px var(--gutter);
  border-bottom: 1px solid var(--line);
}

.drawer__close {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  color: var(--ink-strong);
}

.drawer__close:hover {
  background: var(--surface);
}

.drawer__body {
  padding: 8px var(--gutter) 48px;
}

.drawer__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.drawer__link::after {
  content: "›";
  font-size: 20px;
  color: var(--muted-2);
}

.drawer__foot {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.drawer__langs {
  display: flex;
  gap: 14px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.drawer__langs a.is-active {
  color: var(--ink-strong);
}

/* 08 信任条 --------------------------------------------------------------- */
.trust-bar {
  background: var(--sage-tint);
  border-bottom: 1px solid var(--line);
}

.trust-bar__inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-block: 15px;
}

.trust-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-align: start;
  font-size: 15px;
  line-height: 1.35;
  color: var(--ink);
}

.trust-item svg {
  width: 24px;
  height: 24px;
  flex: none;
  stroke: var(--sage);
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.trust-item strong {
  font-weight: 700;
}

/* 09 首屏 ---------------------------------------------------------------- */
.hero {
  position: relative;
  background: var(--ink-strong);
  color: #fff;
  overflow: hidden;
}

.hero__viewport {
  position: relative;
  min-height: 520px;
}

.hero__slide {
  position: absolute;
  inset: 0;
  display: grid;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}

.hero__slide.is-active {
  position: relative;
  opacity: 1;
  visibility: visible;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 130% at 82% 18%, rgba(0, 99, 200, 0.34) 0%, transparent 58%),
    radial-gradient(90% 120% at 8% 92%, rgba(30, 39, 48, 0.9) 0%, transparent 62%),
    linear-gradient(135deg, #151a1f 0%, #232c34 52%, #191f24 100%);
}

.hero__slide--brand .hero__bg {
  background:
    radial-gradient(100% 120% at 78% 12%, rgba(255, 255, 255, 0.16) 0%, transparent 60%),
    linear-gradient(120deg, #0063c8 0%, #0052a6 55%, #003f80 100%);
}

.hero__wedge {
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  inline-size: 76px;
  background: var(--brand);
  clip-path: polygon(0 0, 30% 0, 0 100%);
  pointer-events: none;
}

.hero__wedge--right {
  inset-inline-start: auto;
  inset-inline-end: 0;
  inline-size: 15%;
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  background: #fff;
  opacity: 0.07;
}

.hero__slide--brand .hero__wedge {
  background: #fff;
  opacity: 0.16;
}

.hero__slide--brand .hero__wedge--right {
  background: #fff;
  opacity: 0.2;
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  align-items: center;
  gap: 40px;
  padding-block: 72px 100px;
}

.hero__copy {
  max-width: 620px;
}

.hero__kicker {
  display: inline-block;
  margin-bottom: 18px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand-on-dark);
}

.hero__slide--brand .hero__kicker {
  color: rgba(255, 255, 255, 0.92);
}

.hero__title {
  font-size: clamp(34px, 4.3vw, 58px);
  font-weight: 900;
  line-height: 0.96;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  color: #fff;
}

.hero__sub {
  margin-top: 20px;
  max-width: 520px;
  font-size: 18px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.82);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero__art {
  position: relative;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 14px;
}

.hero__product {
  display: grid;
  place-items: center;
  width: min(100%, 430px);
  aspect-ratio: 1 / 1;
  border-radius: var(--r-lg);
  background: #fff;
  box-shadow: 0 34px 72px rgba(0, 0, 0, 0.38);
  overflow: hidden;
}

.hero__product img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: none;
}

.hero__art img {
  width: 100%;
  max-width: 560px;
  height: auto;
  filter: drop-shadow(0 26px 48px rgba(0, 0, 0, 0.32));
}

.hero__slide--brand .hero__art img {
  filter: drop-shadow(0 26px 48px rgba(0, 0, 0, 0.18));
}

.hero__tag {
  position: static;
  display: grid;
  gap: 2px;
  padding: 10px 16px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink-strong);
  box-shadow: var(--shadow-1);
  z-index: 3;
}

.hero__tag strong {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.hero__tag span {
  font-size: 12px;
  color: var(--muted);
}

.hero-controls {
  position: absolute;
  inset-block-end: 22px;
  inset-inline: 0;
  z-index: 3;
}

.hero-controls__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.hero-dots {
  display: flex;
  align-items: center;
  gap: 9px;
}

.hero-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.42);
  transition: background var(--t-fast) var(--ease), width var(--t-mid) var(--ease);
}

.hero-dot.is-active {
  width: 26px;
  border-radius: var(--r-pill);
  background: #fff;
}

.hero-arrows {
  display: flex;
  gap: 8px;
}

.hero-arrow {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  color: #fff;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.hero-arrow:hover {
  background: #fff;
  border-color: #fff;
  color: var(--ink-strong);
}

.hero-arrow svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 10 评分 / 市场条 -------------------------------------------------------- */
.rating-strip {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.rating-strip__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  padding-block: 16px;
  font-size: 15px;
  color: var(--ink);
}

.rating-strip__label {
  color: var(--muted);
}

.rating-strip__inner strong {
  font-weight: 700;
}

.rating-strip__brand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: var(--muted);
}

.rating-strip__brand svg {
  width: 18px;
  height: 18px;
}

.stars {
  display: flex;
  gap: 3px;
}

.stars svg {
  width: 26px;
  height: 26px;
  fill: #778976;
}

/* 11 区块标题 ------------------------------------------------------------- */
.section__head {
  max-width: 940px;
  margin-inline: auto;
  margin-bottom: 34px;
  text-align: center;
}

.section__head--start {
  margin-inline: 0;
  text-align: start;
}

.section__eyebrow {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brand);
}

.section__eyebrow--onDark {
  color: var(--brand-on-dark);
}

.section__title {
  font-size: clamp(27px, 3.2vw, 48px);
  font-weight: 900;
  text-transform: uppercase;
  line-height: 0.98;
  letter-spacing: -0.025em;
}

.section__sub {
  margin-top: 16px;
  font-size: 17px;
  color: var(--muted);
}

.section--dark {
  background: var(--ink-dark);
  color: #fff;
}

.section--dark .section__title {
  color: #fff;
}

.section--dark .section__sub {
  color: rgba(255, 255, 255, 0.72);
}

.section__foot {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}

/* 12 标签切换 ------------------------------------------------------------- */
.tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 34px;
  margin-bottom: 34px;
  flex-wrap: wrap;
}

.tabs__btn {
  position: relative;
  padding-bottom: 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-2);
  transition: color var(--t-fast) var(--ease);
}

.tabs__btn::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  height: 2px;
  background: var(--ink-strong);
  transform: scaleX(0);
  transition: transform var(--t-mid) var(--ease);
}

.tabs__btn:hover {
  color: var(--ink);
}

.tabs__btn.is-active {
  color: var(--ink-strong);
}

.tabs__btn.is-active::after {
  transform: scaleX(1);
}

.tabpanel {
  display: none;
}

.tabpanel.is-active {
  display: block;
  animation: fade-in 0.34s var(--ease) both;
}

/* 13 产品卡 --------------------------------------------------------------- */
.product-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 24px;
}

.product-list--four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.product-list--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 100%;
}

.product-card__media {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  padding: 0;
  border-radius: var(--r-md);
  background: #fff;
  overflow: hidden;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.45s var(--ease);
}

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

.product-card__badges {
  position: absolute;
  inset-block-start: 12px;
  inset-inline-start: 12px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-start;
}

.badge {
  display: inline-block;
  padding: 5px 9px;
  border-radius: 4px;
  background: var(--brand-loud);
  color: #fff;
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.1;
}

.badge--dark {
  background: var(--ink-strong);
}

.badge--brand {
  background: var(--brand);
}

.product-card__body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 6px;
  text-align: center;
}

.product-card__ref {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.product-card__title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.9em;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0;
  color: var(--ink);
  text-wrap: pretty;
}

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

.product-card__specs {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  justify-content: center;
  gap: 5px;
  min-height: 2.5em;
  margin-top: 2px;
}

.spec-chip {
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.5;
}

.product-card__price {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-strong);
}

.product-card__price small {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--muted-2);
  text-transform: none;
}

/* 14 分类卡 --------------------------------------------------------------- */
.cat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 400px;
  border-radius: var(--r-lg);
  background: var(--ink-dark);
  color: #fff;
  overflow: hidden;
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}

.cat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.cat-card__head {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 26px 28px 0;
}

.cat-card__mark {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 10px;
  background: #fff;
  color: var(--ink-strong);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.03em;
  flex: none;
}

.cat-card__label {
  display: grid;
  gap: 2px;
}

.cat-card__label small {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-on-dark);
}

.cat-card__name {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: #fff;
}

.cat-card__media {
  position: relative;
  flex: 1 1 auto;
  display: grid;
  place-items: center;
  margin: 20px 24px 24px;
  border-radius: var(--r-md);
  background: #fff;
  overflow: hidden;
}

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

.cat-card:hover .cat-card__media img {
  transform: scale(1.06) translateY(-4px);
}

.cat-card__cta {
  position: absolute;
  inset-block-end: 16px;
  inset-inline-end: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: var(--brand);
  color: #fff;
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}

.cat-card:hover .cat-card__cta,
.cat-card:focus-visible .cat-card__cta {
  opacity: 1;
  transform: none;
}

/* 15 优势条 --------------------------------------------------------------- */
.benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.benefit {
  display: grid;
  gap: 12px;
  justify-items: start;
}

.benefit__icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: var(--r-md);
  background: #fff;
  color: var(--sage);
  box-shadow: var(--shadow-1);
}

.benefit__icon svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.benefit h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.benefit p {
  font-size: 15.5px;
  color: var(--muted);
}

/* 16 图文块 --------------------------------------------------------------- */
.rich-text {
  max-width: 860px;
  margin-inline: auto;
  text-align: center;
}

.rich-text p {
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink);
}

.rich-text .section__title {
  margin-bottom: 20px;
}

.rich-text__actions {
  display: flex;
  justify-content: center;
  margin-top: 28px;
}

/* 17 指南卡 --------------------------------------------------------------- */
.guide-card {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 0;
  border-radius: var(--r-lg);
  background: #fff;
  overflow: hidden;
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}

.guide-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-1);
}

.guide-card__media {
  aspect-ratio: 16 / 10;
  background: linear-gradient(150deg, #e8eae9, #f7f8f7);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.guide-card__media img {
  width: 40%;
  max-height: 66%;
  object-fit: contain;
}

.guide-card__body {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 24px 26px 28px;
}

.guide-card__tag {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand);
}

.guide-card h3 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  text-transform: uppercase;
}

.guide-card p {
  font-size: 15px;
  color: var(--muted);
}

.guide-card .link-arrow {
  margin-top: 6px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-strong);
  transition: gap var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.link-arrow::after {
  content: "→";
  font-size: 15px;
}

.guide-card:hover .link-arrow,
.link-arrow:hover {
  gap: 12px;
  color: var(--brand);
}

/* 18 优惠区 --------------------------------------------------------------- */
.offer-band {
  background: var(--brand);
  color: #fff;
  border-radius: var(--r-md);
  padding: 56px var(--gutter);
  text-align: center;
}

.offer-band__title {
  font-size: clamp(26px, 3vw, 44px);
  font-weight: 900;
  text-transform: uppercase;
  line-height: 0.98;
  letter-spacing: -0.025em;
  color: #fff;
}

.offer-band__sub {
  margin-top: 14px;
  font-size: 16.5px;
  color: rgba(255, 255, 255, 0.92);
}

.offer-form {
  display: flex;
  gap: 10px;
  justify-content: center;
  max-width: 660px;
  margin: 26px auto 0;
}

.offer-form__input {
  flex: 1 1 auto;
  min-width: 0;
  height: 58px;
  padding-inline: 20px;
  border: 1.5px solid transparent;
  border-radius: var(--r-md);
  background: #fff;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  outline: none;
}

.offer-form__input:focus {
  border-color: var(--ink-strong);
}

.offer-form__btn {
  --btn-h: 58px;
}

.offer-band__note {
  margin-top: 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
}

/* 19 页脚 ---------------------------------------------------------------- */
.site-footer {
  background: var(--ink);
  color: #fff;
  padding-block: 72px 50px;
  margin-top: var(--breather);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, minmax(0, 1fr));
  gap: 40px;
}

.footer-brand {
  display: grid;
  gap: 16px;
  align-content: start;
  justify-items: start;
}

.footer-brand .brand {
  color: #fff;
}

.footer-brand .brand__tile {
  background: #fff;
  color: var(--ink-strong);
}

.footer-brand p {
  font-size: 15px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.68);
  max-width: 300px;
}

.footer-col h4 {
  margin-bottom: 18px;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #fff;
}

.footer-col ul {
  display: grid;
  gap: 11px;
}

.footer-col a {
  font-size: 15.5px;
  color: rgba(255, 255, 255, 0.86);
  transition: color var(--t-fast) var(--ease);
}

.footer-col a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer-legal {
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.62);
}

.footer-legal__links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-legal__links a:hover {
  color: #fff;
  text-decoration: underline;
}

.payrow {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.payrow__label {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.55);
  margin-inline-end: 4px;
}

.paychip {
  display: grid;
  place-items: center;
  height: 26px;
  min-width: 40px;
  padding-inline: 8px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.12);
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.86);
}

/* 20 内页头 --------------------------------------------------------------- */
.page-head {
  position: relative;
  background: var(--ink-strong);
  color: #fff;
  overflow: hidden;
}

.page-head::after {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-end: 0;
  inline-size: 34%;
  background: var(--brand);
  clip-path: polygon(46% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.92;
  pointer-events: none;
}

.page-head__inner {
  position: relative;
  z-index: 2;
  padding-block: 68px;
  max-width: 760px;
}

.page-head__eyebrow {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand-on-dark);
}

.page-head__title {
  font-size: clamp(34px, 4.4vw, 62px);
  font-weight: 900;
  line-height: 0.97;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  color: #fff;
}

.page-head__sub {
  margin-top: 18px;
  font-size: 17.5px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.8);
  max-width: 620px;
}

/* 21 面包屑 --------------------------------------------------------------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 18px;
  font-size: 13.5px;
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.breadcrumb span[aria-hidden] {
  color: var(--line-strong);
}

/* 22 产品详情 ------------------------------------------------------------- */
.pdp {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 56px;
  align-items: start;
  padding-block: 8px 64px;
}

.gallery {
  display: grid;
  gap: 12px;
}

.gallery__main {
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  padding: 3%;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
}

.gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.gallery__thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.gallery__thumb {
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  padding: 6%;
  border-radius: var(--r-md);
  background: #fff;
  border: 2px solid var(--line);
  transition: border-color var(--t-fast) var(--ease);
}

.gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.gallery__thumb.is-active {
  border-color: var(--ink-strong);
}

.gallery__note {
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

.pdp__ref {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.pdp__title {
  margin-top: 10px;
  font-size: clamp(28px, 3vw, 42px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.025em;
  text-transform: uppercase;
}

.pdp__lead {
  margin-top: 16px;
  font-size: 17px;
  color: var(--muted);
}

.pdp__price {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
  padding-block: 18px;
  border-block: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--ink-strong);
}

.pdp__price small {
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 400;
  color: var(--muted);
}

.pdp__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.pdp__chips .spec-chip {
  padding: 7px 13px;
  font-size: 13px;
}

.pdp__form {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.qty {
  display: inline-flex;
  align-items: center;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--r-md);
  height: 52px;
  overflow: hidden;
}

.qty button {
  width: 46px;
  height: 100%;
  font-size: 20px;
  line-height: 1;
  color: var(--ink);
  transition: background var(--t-fast) var(--ease);
}

.qty button:hover {
  background: var(--surface);
}

.qty input {
  width: 54px;
  height: 100%;
  border: 0;
  text-align: center;
  font: inherit;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink-strong);
  background: none;
  outline: none;
}

.pdp__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.pdp__actions .btn {
  flex: 1 1 auto;
}

.pdp__meta {
  display: grid;
  gap: 10px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--muted);
}

.pdp__meta div {
  display: flex;
  gap: 10px;
}

.pdp__meta strong {
  min-width: 120px;
  font-weight: 600;
  color: var(--ink);
}

.specs {
  width: 100%;
  border-collapse: collapse;
  font-size: 15.5px;
}

.specs caption {
  padding-bottom: 14px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: start;
}

.specs th,
.specs td {
  padding: 13px 0;
  text-align: start;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.specs th {
  width: 42%;
  font-weight: 500;
  color: var(--muted);
}

.specs td {
  font-weight: 600;
  color: var(--ink-strong);
}

/* 23 表单 ---------------------------------------------------------------- */
.form {
  display: grid;
  gap: 18px;
}

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

.field__label {
  font-family: var(--font-display);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}

.field__label span {
  color: var(--brand);
}

.field__input,
.field__select,
.field__textarea {
  width: 100%;
  min-height: 52px;
  padding: 13px 16px;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--r-md);
  background: #fff;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  outline: none;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.field__textarea {
  min-height: 148px;
  resize: vertical;
}

.field__input:focus,
.field__select:focus,
.field__textarea:focus {
  border-color: var(--ink-strong);
  box-shadow: 0 0 0 3px rgba(0, 99, 200, 0.16);
}

.field__hint {
  font-size: 13px;
  color: var(--muted);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 56px;
  align-items: start;
}

.contact-card {
  display: grid;
  gap: 22px;
  padding: 32px;
  border-radius: var(--r-lg);
  background: var(--surface);
}

.contact-card h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.contact-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 15.5px;
}

.contact-row svg {
  width: 22px;
  height: 22px;
  flex: none;
  margin-top: 2px;
  stroke: var(--brand);
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-row strong {
  display: block;
  font-weight: 600;
  color: var(--ink-strong);
}

.contact-row span {
  color: var(--muted);
}

/* 24 移动底栏 ------------------------------------------------------------- */
.mobile-bar {
  display: none;
  position: fixed;
  inset-block-end: 0;
  inset-inline: 0;
  z-index: 55;
  background: #fff;
  border-top: 1px solid var(--line);
  box-shadow: 0 -6px 20px rgba(22, 25, 27, 0.07);
  padding-block: 8px max(8px, env(safe-area-inset-bottom));
}

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

.mobile-bar__item {
  display: grid;
  justify-items: center;
  gap: 4px;
  padding-block: 4px;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.mobile-bar__item svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mobile-bar__item.is-active {
  color: var(--brand);
}

/* 25 预览标识（顶部细条，避免遮挡内容） ---------------------------------- */
.preview-bar {
  background: var(--ink-strong);
  color: #fff;
}

.preview-bar__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 34px;
  flex-wrap: nowrap;
  white-space: nowrap;
  overflow: hidden;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
}

.preview-bar strong {
  color: var(--brand-on-dark);
}

.preview-bar button {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  font-size: 12px;
  line-height: 1;
  flex: none;
}

.preview-bar button:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* 26 动效 ---------------------------------------------------------------- */
@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

/* 27 响应式 -------------------------------------------------------------- */
@media (max-width: 1400px) {
  .product-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .site-footer__grid {
    grid-template-columns: 1.2fr repeat(4, minmax(0, 1fr));
    gap: 32px;
  }
}

@media (max-width: 1180px) {
  :root {
    --gutter: 28px;
    --breather: 56px;
  }

  .hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.7fr);
  }

  .header-top__inner {
    gap: 18px;
  }

  .brand__word {
    font-size: 22px;
  }

  .icon-action {
    min-width: 66px;
  }

  .nav__list {
    justify-content: flex-start;
    gap: clamp(14px, 2.4vw, 34px);
  }

  .pdp,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .site-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 960px) {
  body {
    font-size: 17px;
  }

  .search {
    display: none;
  }

  .header-top__inner {
    min-height: 66px;
    justify-content: space-between;
    gap: 10px;
  }

  .nav-toggle {
    display: grid;
  }

  .brand {
    margin-inline: auto;
  }

  .brand__word {
    font-size: 19px;
  }

  .brand__mark {
    height: 46px;
    width: auto;
  }

  .header-nav {
    display: none;
  }

  .header-actions .icon-action:not(.icon-action--basket) {
    display: none;
  }

  .icon-action {
    min-width: 0;
    padding: 6px;
  }

  .icon-action__label {
    display: none;
  }

  .hero__viewport {
    min-height: auto;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-block: 40px 92px;
  }

  .hero__art {
    order: -1;
  }

  .hero__product {
    width: min(100%, 290px);
    margin-inline: auto;
  }

  .hero__photo {
    aspect-ratio: 16 / 10;
    width: 100%;
  }

  .hero__art img {
    max-width: 100%;
    margin-inline: auto;
  }

  .hero__tag {
    display: none;
  }

  .hero__wedge {
    inline-size: 54px;
  }

  .preview-bar__inner {
    font-size: 10px;
    gap: 8px;
  }

  .preview-bar__inner span:nth-child(2) {
    display: none;
  }

  .hero__title {
    font-size: clamp(30px, 7.6vw, 44px);
  }

  .hero__sub {
    font-size: 16.5px;
  }

  .trust-bar__inner {
    grid-template-columns: 1fr;
    gap: 10px;
    justify-items: center;
    text-align: center;
    padding-block: 12px;
  }

  .trust-item {
    justify-content: center;
    text-align: center;
  }

  .trust-item:nth-child(n + 2) {
    display: none;
  }

  .product-list,
  .product-list--four,
  .product-list--three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .cat-card {
    min-height: 340px;
  }

  .benefits {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .offer-band {
    padding: 40px 24px;
    border-radius: var(--r-md);
  }

  .offer-form {
    flex-wrap: wrap;
  }

  .offer-form__input,
  .offer-form__btn {
    flex: 1 1 100%;
  }

  .mobile-bar {
    display: block;
  }

  .site-footer {
    padding-block: 52px 40px;
    margin-bottom: 66px;
  }

  .section__foot {
    margin-top: 28px;
  }

  .tabs {
    gap: 22px;
  }

  .tabs__btn {
    font-size: 13px;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .page-head__inner {
    padding-block: 46px;
  }

  .page-head::after {
    inline-size: 46%;
    opacity: 0.5;
  }

  .gallery__thumbs {
    gap: 8px;
  }
}

@media (max-width: 600px) {
  :root {
    --gutter: 18px;
    --breather: 44px;
  }

  .announce__text {
    font-size: 12.5px;
    letter-spacing: 0.06em;
  }

  .announce__inner {
    min-height: 40px;
    gap: 10px;
  }

  .product-list,
  .product-list--four,
  .product-list--three {
    gap: 14px;
  }

  .product-card__title {
    font-size: 14px;
  }

  .product-card__price {
    font-size: 15px;
  }

  .product-card__media {
    padding: 0;
  }

  .product-card__specs {
    min-height: 0;
  }

  .spec-chip {
    font-size: 10.5px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .cat-card__name {
    font-size: 21px;
  }

  .cat-card__head {
    padding: 20px 20px 0;
  }

  .cat-card__media {
    margin: 16px 16px 18px;
  }

  .section__title {
    font-size: clamp(24px, 7.6vw, 32px);
  }

  .rating-strip__inner {
    gap: 8px;
    font-size: 13px;
  }

  .hero__actions .btn {
    flex: 1 1 auto;
  }
}

@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 {
    opacity: 1;
    transform: none;
  }
}

/* 28 RTL 预留：全部使用逻辑属性，阿语版只需在 <html dir="rtl"> 后微调个别图标 */
[dir="rtl"] .hero__wedge {
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  inset-inline-start: auto;
  inset-inline-end: 0;
}

[dir="rtl"] .nav__link::after {
  transform-origin: right;
}

[dir="rtl"] .link-arrow::after {
  content: "←";
}

[dir="rtl"] .drawer__link::after {
  content: "‹";
}



/* 无素材品类的占位面板 ------------------------------------------------ */
.empty-panel {
  display: grid;
  gap: 14px;
  justify-items: start;
  max-width: 720px;
  margin-inline: auto;
  padding: 36px;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px dashed var(--line-strong);
}

.empty-panel h3 {
  font-size: clamp(20px, 2vw, 26px);
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

.empty-panel p {
  font-size: 16px;
  color: var(--muted);
}

/* 目录页栅格：9 个 SKU 用 3 列更耐看，品类页用 4 列 ------------------------ */
@media (min-width: 1181px) {
  .product-list--three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }

  .product-list--four {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 28px;
  }
}

/* 分类卡品牌方块：改用真实标 -------------------------------------------- */
.cat-card__mark img {
  height: 42px;
  width: auto;
  display: block;
}

/* 首屏实拍照片卡（E-bike 第二屏） --------------------------------------- */
.hero__photo {
  width: min(100%, 470px);
  aspect-ratio: 4 / 3;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 32px 60px rgba(0, 0, 0, 0.45);
}

.hero__photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 小屏：长文案按钮允许换行，避免撑出横向滚动 ---------------------------- */
@media (max-width: 600px) {
  .section__foot .btn,
  .pdp__actions .btn {
    max-width: 100%;
    white-space: normal;
    line-height: 1.35;
    padding-block: 14px;
    text-align: center;
  }
}

/* ==========================================================================
   中文语言包（zh-CN）
   Archivo / Inter 都不含 CJK 字形，必须显式补中文字体，
   并修正"全大写 + 0.96 行高"这套为英文设计的排版参数。
   ========================================================================== */
:lang(zh-CN) {
  --font-body: "Inter", "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Heiti SC", sans-serif;
  --font-display: "Archivo", "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Heiti SC", sans-serif;
}

/* 汉字没有 x-height 撑开的视觉留白，行高必须放开，否则上下行相撞 */
:lang(zh-CN) .hero__title,
:lang(zh-CN) .section__title,
:lang(zh-CN) .pdp__title,
:lang(zh-CN) .offer-band__title,
:lang(zh-CN) .story__title,
:lang(zh-CN) .cta__title {
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: 0.01em;
}

/* 中文没有大写，靠 letter-spacing 撑出的仪式感要收回一大半 */
:lang(zh-CN) .hero__kicker,
:lang(zh-CN) .section__eyebrow,
:lang(zh-CN) .eyebrow,
:lang(zh-CN) .nav__link,
:lang(zh-CN) .badge,
:lang(zh-CN) .btn,
:lang(zh-CN) .spec-chip,
:lang(zh-CN) .product-card__ref,
:lang(zh-CN) .pdp__ref,
:lang(zh-CN) .trust-item,
:lang(zh-CN) .footer-col h4,
:lang(zh-CN) .product-card__price,
:lang(zh-CN) .preview-bar,
:lang(zh-CN) .breadcrumb,
:lang(zh-CN) .tabs__btn,
:lang(zh-CN) .tab {
  letter-spacing: 0.02em;
}

:lang(zh-CN) body {
  line-height: 1.72;
}

/* CJK 在 900 字重下多为合成加粗，稍微收一档更干净 */
:lang(zh-CN) .hero__title,
:lang(zh-CN) .section__title {
  -webkit-font-smoothing: antialiased;
}

/* 语言切换里的中文标签比 EN 宽，给一点内边距避免贴边 */
.lang-switch a[lang="zh-CN"] {
  letter-spacing: 0.02em;
}