/* ── 基础重置 & 变量 ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #ff6b35;
  --primary-dark: #e55a2b;
  --primary-light: #fff0eb;
  --secondary: #2d3436;
  --text: #2d3436;
  --text-light: #636e72;
  --text-muted: #b2bec3;
  --bg: #ffffff;
  --bg-gray: #f8f9fa;
  --bg-dark: #2d3436;
  --border: #e9ecef;
  --shadow: 0 2px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: .3s ease;
  --max-width: 1200px;
  --header-h: 72px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section--gray { background: var(--bg-gray); }

.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.section-header p {
  color: var(--text-light);
  font-size: 1.05rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  transition: var(--transition);
}
.btn--primary {
  background: var(--primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255,107,53,.4);
}
.btn--outline {
  border: 2px solid var(--primary);
  color: var(--primary);
}
.btn--outline:hover {
  background: var(--primary);
  color: #fff;
}
.btn--sm { padding: 8px 20px; font-size: .85rem; }

/* ── 公告栏 ── */
.announcement {
  background: var(--secondary);
  color: #fff;
  text-align: center;
  padding: 8px 16px;
  font-size: .875rem;
  overflow: hidden;
}
.announcement a { color: #ffd700; }
.announcement a:hover { text-decoration: underline; }

/* ── 头部导航 ── */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 32px;
}
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.header__logo img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
}
.header__logo span {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.header__nav { display: flex; gap: 4px; }
.header__nav a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: .925rem;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
}
.header__nav a:hover,
.header__nav a.active {
  color: var(--primary);
  background: var(--primary-light);
}

.header__search {
  width: 360px;
  max-width: 360px;
  flex-shrink: 0;
  position: relative;
}
.header__search input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border: 2px solid var(--border);
  border-radius: 50px;
  font-size: .875rem;
  transition: var(--transition);
  outline: none;
}
.header__search input:focus {
  border-color: var(--primary);
}
.header__search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1rem;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.header__action-btn {
  position: relative;
  font-size: 1.3rem;
  padding: 6px;
  transition: var(--transition);
}
.header__action-btn:hover { transform: scale(1.1); }
.header__cart-count {
  position: absolute;
  top: -2px;
  right: -6px;
  background: var(--primary);
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header__menu-toggle {
  display: none;
  font-size: 1.5rem;
  padding: 4px;
}

/* ── 轮播 Banner ── */
.hero { position: relative; overflow: hidden; }
.hero__slider { position: relative; height: 480px; }
.hero__slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  transition: opacity .6s ease;
  pointer-events: none;
}
.hero__slide.active {
  opacity: 1;
  pointer-events: auto;
}
.hero__content {
  position: relative;
  z-index: 2;
  max-width: 520px;
}
.hero__content h1 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero__content p {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-bottom: 0;
}
.hero__image {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 45%;
  max-height: 380px;
  object-fit: contain;
  z-index: 1;
}

.hero__dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}
.hero__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(0,0,0,.2);
  transition: var(--transition);
}
.hero__dot.active {
  background: var(--primary);
  width: 28px;
  border-radius: 5px;
}

.hero__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,.9);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}
.hero__arrow:hover { background: #fff; box-shadow: var(--shadow-lg); }
.hero__arrow--prev { left: 20px; }
.hero__arrow--next { right: 20px; }

/* ── 快捷入口 ── */
.quick-links {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}
.quick-links__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.quick-links__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 8px;
  border-radius: var(--radius);
  transition: var(--transition);
}
.quick-links__item:hover {
  background: var(--primary-light);
  transform: translateY(-3px);
}
.quick-links__icon { font-size: 2rem; }
.quick-links__label { font-size: .875rem; font-weight: 500; }

/* ── 服务特色 ── */
.features {
  padding: 40px 0;
  background: var(--bg-gray);
}
.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.features__item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.features__icon { font-size: 2rem; flex-shrink: 0; }
.features__text h4 { font-size: 1rem; margin-bottom: 4px; }
.features__text p { font-size: .85rem; color: var(--text-light); }

/* ── 商品分类 ── */
.categories__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/10;
  cursor: pointer;
  group: category;
}
.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.category-card:hover img { transform: scale(1.08); }
.category-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.7) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  color: #fff;
}
.category-card__overlay h3 { font-size: 1.3rem; margin-bottom: 4px; }
.category-card__overlay p { font-size: .875rem; opacity: .85; }
.category-card__count {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(255,255,255,.2);
  backdrop-filter: blur(4px);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: .8rem;
  color: #fff;
}

/* ── 商品卡片 ── */
.products__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.product-card__image {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--bg-gray);
}
.product-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.product-card:hover .product-card__image img { transform: scale(1.05); }
.product-card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--primary);
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: .75rem;
  font-weight: 600;
}
.product-card__body { padding: 16px; }
.product-card__name {
  font-size: .925rem;
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}
.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}
.product-card__tag {
  font-size: .7rem;
  padding: 2px 8px;
  background: var(--bg-gray);
  border-radius: 4px;
  color: var(--text-light);
}
.product-card__price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 8px;
}
.product-card__price-current {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}
.product-card__price-current small { font-size: .8rem; }
.product-card__price-original {
  font-size: .85rem;
  color: var(--text-muted);
  text-decoration: line-through;
}
.product-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .8rem;
  color: var(--text-light);
}
.product-card__rating { color: #f39c12; }
.product-card__cart-btn {
  position: absolute;
  bottom: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(255,107,53,.3);
}
.product-card:hover .product-card__cart-btn {
  opacity: 1;
  transform: translateY(0);
}
.product-card__cart-btn:hover { background: var(--primary-dark); }

/* ── 促销活动 ── */
.promotions__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.promo-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.promo-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.promo-card__image {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.promo-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.promo-card__discount {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--primary);
  color: #fff;
  padding: 6px 14px;
  border-radius: 50px;
  font-weight: 700;
  font-size: .9rem;
}
.promo-card__body { padding: 20px; }
.promo-card__body h3 { font-size: 1.15rem; margin-bottom: 6px; }
.promo-card__body .subtitle {
  color: var(--primary);
  font-size: .875rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.promo-card__body p {
  font-size: .85rem;
  color: var(--text-light);
  margin-bottom: 16px;
}
.promo-card__countdown {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  color: var(--text-light);
}
.promo-card__countdown-time {
  font-weight: 700;
  color: var(--primary);
}

/* ── 用户评价 ── */
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.testimonial-card__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.testimonial-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-gray);
}
.testimonial-card__info h4 { font-size: .95rem; }
.testimonial-card__info span { font-size: .8rem; color: var(--text-muted); }
.testimonial-card__stars { color: #f39c12; margin-bottom: 12px; font-size: .9rem; }
.testimonial-card__content {
  font-size: .9rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}
.testimonial-card__product {
  font-size: .8rem;
  color: var(--primary);
  font-weight: 500;
}

/* ── 关于我们 ── */
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about__image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about__image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.about__content h2 { font-size: 2rem; margin-bottom: 8px; }
.about__content .subtitle {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 20px;
}
.about__content p {
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.8;
}
.about__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.about__stat {
  text-align: center;
  padding: 16px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
}
.about__stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}
.about__stat-label {
  font-size: .8rem;
  color: var(--text-light);
  margin-top: 4px;
}

/* ── 联系我们 ── */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact__inner--single {
  grid-template-columns: 1fr;
  max-width: 800px;
  margin: 0 auto;
}
.contact__info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}
.contact__info-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact__info-text h4 { font-size: .95rem; margin-bottom: 4px; }
.contact__info-text p { font-size: .9rem; color: var(--text-light); line-height: 1.8; }
.contact__social {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}
.contact__social a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}
.contact__social a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}
.contact__qrcode {
  text-align: center;
}
.contact__qrcode img {
  width: 160px;
  height: 160px;
  margin: 0 auto 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-gray);
  object-fit: cover;
}
.contact__qrcode p { font-size: .875rem; color: var(--text-light); }

/* ── 页脚 ── */
.footer {
  background: var(--bg-dark);
  color: #dfe6e9;
  padding: 60px 0 24px;
}
.footer--minimal {
  padding: 24px 0;
}
.footer--minimal .footer__bottom {
  border-top: none;
  padding-top: 0;
  justify-content: center;
  text-align: center;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}
.footer__brand p {
  font-size: .875rem;
  color: #b2bec3;
  margin-top: 12px;
  line-height: 1.7;
}
.footer__brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer__brand-logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}
.footer__brand-logo span {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
}
.footer__col h4 {
  color: #fff;
  font-size: .95rem;
  margin-bottom: 16px;
}
.footer__col a {
  display: block;
  font-size: .85rem;
  color: #b2bec3;
  padding: 4px 0;
  transition: var(--transition);
}
.footer__col a:hover { color: var(--primary); }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .8rem;
  color: #636e72;
}
.footer__payments {
  display: flex;
  gap: 12px;
  align-items: center;
}
.footer__payment-tag {
  padding: 4px 12px;
  background: rgba(255,255,255,.08);
  border-radius: 4px;
  font-size: .75rem;
}

/* ── 购物车侧边栏 ── */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.cart-overlay.open { opacity: 1; visibility: visible; }

.cart-sidebar {
  position: fixed;
  top: 0;
  right: -420px;
  width: 420px;
  max-width: 100vw;
  height: 100vh;
  background: #fff;
  z-index: 2001;
  display: flex;
  flex-direction: column;
  transition: right .4s ease;
  box-shadow: -4px 0 20px rgba(0,0,0,.15);
}
.cart-sidebar.open { right: 0; }

.cart-sidebar__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.cart-sidebar__header h3 { font-size: 1.15rem; }
.cart-sidebar__close { font-size: 1.5rem; color: var(--text-light); }

.cart-sidebar__body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 24px;
}
.cart-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.cart-empty__icon { font-size: 3rem; margin-bottom: 12px; }

.cart-item {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.cart-item__img {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: var(--bg-gray);
}
.cart-item__info { flex: 1; }
.cart-item__name { font-size: .875rem; font-weight: 600; margin-bottom: 4px; }
.cart-item__price { color: var(--primary); font-weight: 700; font-size: .9rem; }
.cart-item__remove {
  color: var(--text-muted);
  font-size: .8rem;
  margin-top: 4px;
}
.cart-item__remove:hover { color: var(--primary); }

.cart-sidebar__footer {
  padding: 20px 24px;
  border-top: 1px solid var(--border);
}
.cart-sidebar__total {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  font-size: 1.05rem;
}
.cart-sidebar__total span:last-child {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.25rem;
}

/* ── Toast 提示 ── */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--secondary);
  color: #fff;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: .9rem;
  z-index: 3000;
  opacity: 0;
  transition: all .4s ease;
  box-shadow: var(--shadow-lg);
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── 回到顶部 ── */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

/* ── 图片占位 ── */
.img-placeholder {
  background: linear-gradient(135deg, #f5f5f5 25%, #e8e8e8 50%, #f5f5f5 75%);
  background-size: 200% 200%;
  animation: shimmer 1.5s infinite;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: .8rem;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── 响应式 ── */
@media (max-width: 1024px) {
  .products__grid { grid-template-columns: repeat(3, 1fr); }
  .footer__grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .section { padding: 56px 0; }

  .header__inner { justify-content: space-between; }
  .header__nav,
  .header__search { display: none; }
  .header__menu-toggle { display: block; }

  .header__nav.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    padding: 16px;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--border);
  }

  .hero__slider { height: 360px; }
  .hero__content h1 { font-size: 1.75rem; }
  .hero__image { width: 50%; opacity: .3; }

  .quick-links__grid { grid-template-columns: repeat(3, 1fr); }
  .features__grid { grid-template-columns: repeat(2, 1fr); }
  .categories__grid { grid-template-columns: repeat(2, 1fr); }
  .products__grid { grid-template-columns: repeat(2, 1fr); }
  .promotions__grid { grid-template-columns: 1fr; }
  .testimonials__grid { grid-template-columns: 1fr; }
  .about__inner { grid-template-columns: 1fr; }
  .about__stats { grid-template-columns: repeat(2, 1fr); }
  .contact__inner { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .products__grid { grid-template-columns: 1fr; }
  .categories__grid { grid-template-columns: 1fr; }
  .features__grid { grid-template-columns: 1fr; }
  .quick-links__grid { grid-template-columns: repeat(3, 1fr); }
}