/* ============================================================
   QinghanTop 官网 - 全局样式
   Design tokens 见 DESIGN.md
   ============================================================ */

/* --------------- Fonts (CN-friendly) --------------- */
@import url("https://fonts.googleapis.cn/css2?family=Playfair+Display:wght@600;700&family=Inter:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;700&display=swap");

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

html,
body {
  margin: 0;
  padding: 0;
}

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

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

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

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

/* --------------- Design Tokens --------------- */
:root {
  --color-primary: #ea6a1f;
  --color-primary-deep: #c4471a;
  --color-primary-light: #fdebdc;
  --color-primary-lighter: #fef4ea;
  --color-accent-vermilion: #e23a2e;
  --color-ink-900: #1a1a1a;
  --color-ink-700: #3d3d3d;
  --color-ink-500: #6b6b6b;
  --color-ink-300: #a8a8a8;
  --color-bg-cream: #fbf7f1;
  --color-bg-white: #ffffff;
  --color-border: #eae4da;
  --color-shadow-warm: rgba(196, 71, 26, 0.08);
  --color-shadow-hover: rgba(196, 71, 26, 0.16);

  --shadow-card: 0 2px 8px var(--color-shadow-warm);
  --shadow-card-hover: 0 12px 32px var(--color-shadow-hover),
    0 2px 8px rgba(0, 0, 0, 0.04);

  --radius-btn: 8px;
  --radius-card: 12px;
  --radius-image: 16px;
  --radius-tag: 999px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);

  --container-max: 1200px;
  --header-h: 72px;

  --font-serif: "Playfair Display", Georgia, "Songti SC", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* --------------- Base --------------- */
body {
  font-family: var(--font-sans);
  color: var(--color-ink-700);
  background-color: var(--color-bg-cream);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html[lang="zh-CN"] body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", var(--font-sans);
}

h1,
h2,
h3,
h4 {
  color: var(--color-ink-900);
  line-height: 1.15;
  margin: 0 0 16px;
  font-weight: 700;
}

h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  letter-spacing: -0.02em;
}

html[lang="zh-CN"] h1 {
  font-family: "Noto Sans SC", var(--font-sans);
  letter-spacing: 0;
}

h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  letter-spacing: -0.01em;
}

html[lang="zh-CN"] h2 {
  font-family: "Noto Sans SC", var(--font-sans);
}

h3 {
  font-size: 1.375rem;
  font-weight: 600;
}

p {
  margin: 0 0 16px;
  color: var(--color-ink-700);
}

.text-muted {
  color: var(--color-ink-500);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px);
}

.section {
  padding: clamp(64px, 8vw, 96px) 0;
  position: relative;
}

.section-tight {
  padding: clamp(48px, 6vw, 72px) 0;
}

.section-title {
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-ink-500);
  max-width: 640px;
  margin: 0 auto 48px;
}

/* --------------- Buttons --------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 300ms var(--ease);
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(234, 106, 31, 0.28);
}

.btn-primary:hover {
  background: var(--color-primary-deep);
  transform: translateY(1px);
  box-shadow: 0 2px 8px rgba(196, 71, 26, 0.32);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary-lighter);
  color: var(--color-primary-deep);
  border-color: var(--color-primary-deep);
}

.btn-ghost {
  color: var(--color-ink-700);
  padding: 10px 16px;
}

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

/* --------------- Header --------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg-white);
  box-shadow: 0 1px 0 var(--color-border);
  transition: box-shadow 200ms var(--ease);
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand img {
  height: 60px;
  width: auto;
  border-radius: 6px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.5;
}

.brand-name {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-ink-900);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: 0.72rem;
  color: var(--color-ink-500);
  text-transform: uppercase;
}

/* Nav */
.primary-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  position: relative;
  padding: 10px 14px;
  font-size: 0.94rem;
  color: var(--color-ink-700);
  transition: color 200ms var(--ease);
  font-weight: 500;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms var(--ease);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* Header tools */
.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--color-ink-700);
  transition: all 200ms var(--ease);
}

.icon-btn:hover {
  background: var(--color-primary-lighter);
  color: var(--color-primary);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  font-size: 0.85rem;
  font-weight: 500;
}

.lang-switch button {
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--color-ink-500);
  transition: color 200ms var(--ease);
  font-weight: 500;
}

.lang-switch button.active {
  color: var(--color-primary);
  font-weight: 700;
}

.lang-switch .divider {
  color: var(--color-ink-300);
}

/* Search */
.search-wrap {
  position: relative;
}

.search-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: min(360px, 92vw);
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card-hover);
  padding: 16px;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: all 200ms var(--ease);
}

.search-panel.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.search-panel form {
  display: flex;
  gap: 8px;
}

.search-panel input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  font: inherit;
  color: var(--color-ink-900);
  background: var(--color-bg-cream);
  transition: border-color 200ms var(--ease);
}

.search-panel input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lighter);
}

.search-hint {
  font-size: 0.8rem;
  color: var(--color-ink-500);
  margin: 8px 0 0;
}

/* Mobile menu button */
.menu-toggle {
  display: none;
}

/* Mobile drawer */
.mobile-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(320px, 85vw);
  background: var(--color-bg-white);
  padding: 24px;
  transform: translateX(100%);
  transition: transform 300ms var(--ease);
  z-index: 200;
  overflow-y: auto;
  box-shadow: -20px 0 40px rgba(0, 0, 0, 0.08);
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-drawer-close {
  position: absolute;
  top: 16px;
  right: 16px;
}

.mobile-drawer .mobile-nav {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-drawer .mobile-nav a {
  padding: 12px 4px;
  font-size: 1rem;
  color: var(--color-ink-900);
  border-bottom: 1px solid var(--color-border);
}

.mobile-drawer .mobile-nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(26, 26, 26, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms var(--ease);
  z-index: 150;
}

.backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

/* --------------- Hero --------------- */
.hero {
  position: relative;
  overflow: hidden;
  width: 100%;
  background: var(--color-bg-cream);
  min-height: clamp(380px, 50vh, 520px);
}

/* ───── Right image: absolute, pinned to viewport right ───── */
.hero-image-col {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 50%;
  max-width: 760px;
  overflow: hidden;
  z-index: 1;
}

.hero-image-col img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Gradient blend: left edge of image fades into the cream text area */
.hero-image-col::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 35%;
  background: linear-gradient(to right, var(--color-bg-cream), transparent);
  z-index: 2;
  pointer-events: none;
}

/* Subtle warm overlay on the image for consistency */
.hero-image-col::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(234, 106, 31, 0.04) 0%,
    transparent 50%
  );
  z-index: 1;
  pointer-events: none;
}

/* ───── Left text: constrained to container, left-aligned ───── */
.hero-content {
  position: relative;
  z-index: 2;
  min-height: clamp(380px, 50vh, 520px);
  display: flex;
  align-items: center;
}

.hero-text {
  width: 52%;
  max-width: 620px;
  padding: clamp(48px, 5vw, 80px) 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--color-primary-light);
  color: var(--color-primary-deep);
  border-radius: var(--radius-tag);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
  align-self: flex-start;
}

.hero-eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.hero-title {
  margin-bottom: 20px;
}

.hero-title .accent {
  color: var(--color-primary);
  display: inline-block;
  position: relative;
}

.hero-title .accent::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 8px;
  background: var(--color-primary-light);
  z-index: -1;
  border-radius: 4px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-ink-500);
  margin-bottom: 32px;
  max-width: 540px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-meta {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.hero-meta-item strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-ink-900);
  line-height: 1;
  margin-bottom: 4px;
}

html[lang="zh-CN"] .hero-meta-item strong {
  font-family: "Noto Sans SC", var(--font-sans);
}

.hero-meta-item span {
  font-size: 0.85rem;
  color: var(--color-ink-500);
}

.hero-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: var(--color-bg-white);
  padding: 14px 18px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card-hover);
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 240px;
  z-index: 3;
}

.hero-badge-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary-light);
  color: var(--color-primary-deep);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-badge-text strong {
  display: block;
  color: var(--color-ink-900);
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.hero-badge-text span {
  font-size: 0.8rem;
  color: var(--color-ink-500);
}

/* --------------- Wave divider (SVG inline) --------------- */
.wave-divider {
  width: 100%;
  height: 48px;
  display: block;
  color: var(--color-primary-light);
}

.wave-divider svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* --------------- Features --------------- */
.features {
  background: var(--color-bg-white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 32px 24px 28px;
  transition: all 300ms var(--ease);
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--color-primary) 0%,
    var(--color-accent-vermilion) 100%
  );
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms var(--ease);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary-deep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-card h3 {
  margin: 0 0 8px;
  color: var(--color-ink-900);
  font-size: 1.1rem;
}

.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-ink-500);
  line-height: 1.65;
}

/* --------------- Business intro --------------- */
.business {
  background: var(--color-bg-cream);
}

.business-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.business-visual {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-image);
  overflow: hidden;
}

.business-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.business-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(251, 247, 241, 0.25) 0%,
    transparent 50%
  );
  pointer-events: none;
  z-index: 1;
}

.business-visual .business-stat {
  position: absolute;
  background: var(--color-bg-white);
  padding: 16px 20px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card-hover);
  z-index: 2;
}

.business-visual .business-stat.s1 {
  top: 32px;
  left: 32px;
}

.business-visual .business-stat.s2 {
  bottom: 32px;
  right: 32px;
}

.business-visual .business-stat strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 4px;
}

html[lang="zh-CN"] .business-visual .business-stat strong {
  font-family: "Noto Sans SC", var(--font-sans);
}

.business-visual .business-stat span {
  font-size: 0.82rem;
  color: var(--color-ink-700);
}

.business-eyebrow {
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.business-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 20px;
  margin-top: 24px;
}

.business-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.94rem;
  color: var(--color-ink-700);
}

.business-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  margin-top: 10px;
  flex-shrink: 0;
}

/* --------------- CTA banner --------------- */
.cta-banner {
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-primary-deep) 100%
  );
  color: #fff;
  border-radius: var(--radius-image);
  padding: clamp(40px, 5vw, 64px);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before,
.cta-banner::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.cta-banner::before {
  width: 300px;
  height: 300px;
  top: -100px;
  left: -80px;
}

.cta-banner::after {
  width: 240px;
  height: 240px;
  bottom: -100px;
  right: -60px;
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: 12px;
  position: relative;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 640px;
  margin: 0 auto 32px;
  position: relative;
}

.cta-banner .btn {
  position: relative;
  background: #fff;
  color: var(--color-primary-deep);
}

.cta-banner .btn:hover {
  background: var(--color-bg-cream);
  color: var(--color-primary-deep);
  transform: translateY(1px);
}

/* --------------- Footer --------------- */
.site-footer {
  background: #1a1613;
  color: rgba(255, 255, 255, 0.82);
  padding: clamp(56px, 7vw, 88px) 0 24px;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand img {
  height: 56px;
  border-radius: 8px;
  margin-bottom: 16px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.92rem;
  max-width: 320px;
  line-height: 1.7;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

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

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.92rem;
  transition: color 200ms var(--ease);
}

.footer-col ul li a:hover {
  color: var(--color-primary);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.62);
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.85);
  transition: color 200ms var(--ease);
}

.footer-contact a:hover {
  color: var(--color-primary);
}

.footer-contact .row {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.footer-contact .row svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.65);
  margin-left: 16px;
  transition: color 200ms var(--ease);
}

.footer-bottom a:hover {
  color: var(--color-primary);
}

/* --------------- Sub-pages: page hero (compact) --------------- */
.page-hero {
  background: linear-gradient(
    180deg,
    var(--color-primary-lighter) 0%,
    var(--color-bg-cream) 100%
  );
  padding: clamp(56px, 7vw, 96px) 0 clamp(48px, 6vw, 72px);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero .breadcrumb {
  color: var(--color-ink-500);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.page-hero .breadcrumb a {
  color: var(--color-ink-500);
  transition: color 200ms var(--ease);
}

.page-hero .breadcrumb a:hover {
  color: var(--color-primary);
}

.page-hero .breadcrumb .sep {
  margin: 0 8px;
  color: var(--color-ink-300);
}

.page-hero p.lead {
  max-width: 720px;
  margin: 0 auto;
  color: var(--color-ink-500);
  font-size: 1.05rem;
}

/* --------------- Prose / long-form content --------------- */
.prose {
  max-width: 820px;
  margin: 0 auto;
  color: var(--color-ink-700);
  font-size: 1rem;
}

.prose h2 {
  margin-top: 48px;
  margin-bottom: 16px;
  font-size: 1.5rem;
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--color-ink-900);
}

html[lang="zh-CN"] .prose h2 {
  font-family: "Noto Sans SC", var(--font-sans);
}

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

.prose h3 {
  margin-top: 32px;
  margin-bottom: 12px;
  font-size: 1.1rem;
  color: var(--color-ink-900);
}

.prose p {
  margin-bottom: 16px;
  line-height: 1.8;
}

.prose ul,
.prose ol {
  margin: 0 0 20px;
  padding-left: 24px;
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 8px;
  line-height: 1.75;
}

.prose li::marker {
  color: var(--color-primary);
}

.prose strong {
  color: var(--color-ink-900);
}

.info-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  margin: 24px 0;
  box-shadow: var(--shadow-card);
}

.info-card.warn {
  border-color: var(--color-primary-light);
  background: var(--color-primary-lighter);
}

/* --------------- Product cards --------------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all 300ms var(--ease);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.product-card-cover {
  background: linear-gradient(
    135deg,
    var(--color-primary-light) 0%,
    #f7d5b0 100%
  );
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-deep);
  overflow: hidden;
}

.product-card-cover svg {
  width: 88px;
  height: 88px;
  opacity: 0.85;
}

.product-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-tag);
  background: var(--color-primary-light);
  color: var(--color-primary-deep);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
  align-self: flex-start;
}

.product-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--color-ink-900);
}

.product-card p {
  margin: 0 0 16px;
  color: var(--color-ink-500);
  font-size: 0.92rem;
  flex: 1;
}

.product-card ul {
  margin: 0 0 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.product-card ul li {
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-tag);
  font-size: 0.8rem;
  color: var(--color-ink-700);
}

/* --------------- Contact page --------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  transition: all 300ms var(--ease);
}

.contact-item:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: transparent;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--color-primary-light);
  color: var(--color-primary-deep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item h4 {
  margin: 0 0 4px;
  color: var(--color-ink-900);
  font-size: 0.95rem;
}

.contact-item p,
.contact-item a {
  margin: 0;
  color: var(--color-ink-700);
  font-size: 0.94rem;
  word-break: break-word;
}

.contact-item a:hover {
  color: var(--color-primary);
}

.contact-form {
  background: var(--color-bg-white);
  padding: 32px;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.contact-form h3 {
  margin-top: 0;
  margin-bottom: 20px;
  color: var(--color-ink-900);
}

.form-field {
  margin-bottom: 16px;
}

.form-field label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  color: var(--color-ink-700);
  font-weight: 500;
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 8px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  background: var(--color-bg-cream);
  font: inherit;
  color: var(--color-ink-900);
  transition: border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lighter);
}

.form-field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-hint {
  color: var(--color-ink-500);
  font-size: 0.82rem;
  margin-top: 12px;
}

/* --------------- About page timeline --------------- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 48px 0;
}

.stat-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-card);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--color-border);
}

.stat-card strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.25rem;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

html[lang="zh-CN"] .stat-card strong {
  font-family: "Noto Sans SC", var(--font-sans);
}

.stat-card span {
  font-size: 0.9rem;
  color: var(--color-ink-500);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.value-card {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  transition: all 300ms var(--ease);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.value-card .num {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 12px;
  font-weight: 700;
}

html[lang="zh-CN"] .value-card .num {
  font-family: "Noto Sans SC", var(--font-sans);
}

.value-card h3 {
  color: var(--color-ink-900);
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.value-card p {
  margin: 0;
  color: var(--color-ink-500);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* --------------- Reveal animations --------------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* --------------- Responsive --------------- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

  .business-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .business-visual {
    aspect-ratio: 5 / 4;
    max-width: 480px;
  }
}

@media (max-width: 768px) {
  .primary-nav {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    min-height: auto;
    display: block;
  }

  .hero-text {
    width: 100%;
    max-width: 100%;
    padding: 48px 0;
  }

  .hero-image-col {
    position: relative;
    width: 100%;
    max-width: 100%;
    height: 300px;
  }

  .hero-image-col::before {
    display: none;
  }

  .hero-badge {
    left: 12px;
    right: 12px;
    bottom: 12px;
    max-width: none;
  }

  .features-grid,
  .product-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-bottom a {
    margin: 0 8px;
  }

  .hero-meta {
    gap: 20px;
  }

  .hero-meta-item strong {
    font-size: 1.4rem;
  }

  .brand-text {
    display: none;
  }

  .lang-switch {
    padding: 4px 6px;
  }
}

@media (max-width: 480px) {
  .stats-row {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .business-list {
    grid-template-columns: 1fr;
  }
}

/* --------------- Focus visible --------------- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --------------- Lang-only content blocks --------------- */
html[lang="en"] [data-lang-only="zh-CN"] {
  display: none;
}
html[lang="zh-CN"] [data-lang-only="en"] {
  display: none;
}