/* ==========================================================================
   禾鲜记官网 · 共享样式
   风格：温馨 · 贴近自然
   文件：css/style.css
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --bg: #f7f2e7;
  --bg-soft: #efe6d3;
  --card: #fffdf7;
  --ink: #463d31;
  --ink-soft: #7d7261;
  --ink-faint: #a89a80;
  --green: #4a7c59;
  --green-deep: #33593f;
  --green-soft: #e4eee1;
  --orange: #d9824b;
  --orange-deep: #b96a38;
  --orange-soft: #f6e8d8;
  --red: #c8443a;
  --line: #e4dac6;
  --shadow: 0 12px 32px rgba(90, 72, 45, 0.1);
  --shadow-sm: 0 6px 18px rgba(90, 72, 45, 0.08);
  --radius: 18px;
  --radius-sm: 12px;
  --font-head: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 重置 ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.4;
}

/* ---------- 通用容器 ---------- */
.container {
  width: min(1160px, 92%);
  margin: 0 auto;
}

.section {
  padding: 76px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 44px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--orange-deep);
  background: var(--orange-soft);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 14px;
}

.section-tag::before,
.section-tag::after {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.section-title {
  font-size: clamp(26px, 3.4vw, 36px);
  color: var(--green-deep);
}

.section-desc {
  color: var(--ink-soft);
  margin-top: 10px;
  font-size: 15px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(135deg, var(--green), var(--green-deep));
  color: #fdfaf1;
  box-shadow: 0 8px 20px rgba(74, 124, 89, 0.32);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(74, 124, 89, 0.4);
}

.btn-accent {
  background: linear-gradient(135deg, var(--orange), var(--orange-deep));
  color: #fdfaf1;
  box-shadow: 0 8px 20px rgba(217, 130, 75, 0.32);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(217, 130, 75, 0.42);
}

.btn-ghost {
  background: transparent;
  color: var(--green-deep);
  border: 1.5px solid var(--green);
}

.btn-ghost:hover {
  background: var(--green-soft);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 34px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 242, 231, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 46px;
  height: 46px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-text strong {
  font-family: var(--font-head);
  font-size: 21px;
  color: var(--green-deep);
  letter-spacing: 2px;
}

.brand-text small {
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 1px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-link {
  position: relative;
  font-size: 15px;
  color: var(--ink-soft);
  padding: 6px 2px;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}

.nav-link:hover {
  color: var(--green-deep);
}

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

.nav-link.active {
  color: var(--green-deep);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--green-deep);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 20%, rgba(217, 130, 75, 0.16), transparent 42%),
    radial-gradient(circle at 10% 85%, rgba(74, 124, 89, 0.14), transparent 46%),
    var(--bg);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
  padding: 64px 0 80px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--green);
  background: var(--green-soft);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.hero-title {
  font-size: clamp(32px, 4.6vw, 52px);
  color: var(--green-deep);
  letter-spacing: 2px;
}

.hero-title em {
  font-style: normal;
  color: var(--orange);
}

.hero-slogan {
  margin-top: 14px;
  font-family: var(--font-head);
  font-size: clamp(18px, 2.2vw, 24px);
  color: var(--ink);
  letter-spacing: 4px;
}

.hero-desc {
  margin-top: 18px;
  max-width: 46ch;
  color: var(--ink-soft);
  font-size: 15px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  margin-top: 36px;
}

.hero-fact strong {
  display: block;
  font-family: var(--font-head);
  font-size: 24px;
  color: var(--green-deep);
}

.hero-fact span {
  font-size: 13px;
  color: var(--ink-soft);
}

.hero-visual {
  position: relative;
  text-align: center;
}

.hero-visual img {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  border-radius: 28px;
  box-shadow: var(--shadow);
  animation: floaty 5s ease-in-out infinite;
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ---------- 品牌介绍 ---------- */
.brand-section {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
}

.brand-card {
  display: grid;
  grid-template-columns: 0.8fr 1.4fr;
  gap: 44px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 44px;
}

.brand-card-visual {
  text-align: center;
  padding: 24px;
  background: linear-gradient(160deg, var(--green-soft), var(--orange-soft));
  border-radius: var(--radius);
}

.brand-card-visual img {
  height: 12em;
  width: 12em;
  margin: 0 auto 16px;
}

.brand-card-visual h3 {
  color: var(--green-deep);
  letter-spacing: 3px;
  font-size: 22px;
}

.brand-card-visual p {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 13px;
  letter-spacing: 2px;
}

.brand-story p {
  color: var(--ink-soft);
  margin-bottom: 12px;
  font-size: 15px;
}

.brand-story p strong {
  color: var(--green-deep);
}

.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 20px;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
  background: var(--green-soft);
}

.feature:nth-child(even) .feature-icon {
  color: var(--orange-deep);
  background: var(--orange-soft);
}

.feature h4 {
  font-size: 16px;
  color: var(--green-deep);
  margin-bottom: 6px;
}

.feature p {
  font-size: 13px;
  color: var(--ink-soft);
}

/* ---------- 热销产品 ---------- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.product-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.product-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  font-size: 12px;
  color: var(--orange-deep);
  background: var(--orange-soft);
  padding: 4px 10px;
  border-radius: 999px;
}

.product-media {
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.product-body {
  padding: 16px 18px 20px;
}

.product-name {
  font-size: 16px;
  color: var(--green-deep);
  margin-bottom: 4px;
}

.product-origin {
  font-size: 12px;
  color: var(--ink-faint);
  margin-bottom: 10px;
}

.product-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.product-price {
  font-family: var(--font-head);
  font-size: 19px;
  color: var(--orange-deep);
}

.product-price small {
  font-size: 12px;
  font-family: var(--font-body);
}

.product-note {
  font-size: 12px;
  color: var(--green);
  background: var(--green-soft);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.products-more {
  text-align: center;
  margin-top: 40px;
}

/* ---------- 购物入口 ---------- */
.shop-section {
  background: linear-gradient(180deg, var(--bg-soft), var(--bg));
}

.shop-entry {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.shop-card {
  position: relative;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 36px;
  display: flex;
  align-items: center;
  gap: 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.shop-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.shop-icon {
  flex-shrink: 0;
  width: 92px;
  height: 92px;
  border-radius: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-soft);
  color: var(--green);
}

.shop-card:nth-child(2) .shop-icon {
  background: var(--orange-soft);
  color: var(--orange-deep);
}

.shop-body h3 {
  font-size: 20px;
  color: var(--green-deep);
  margin-bottom: 6px;
}

.shop-body p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

/* ---------- 页面横幅（内页） ---------- */
.page-hero {
  text-align: center;
  padding: 64px 0 56px;
  background:
    radial-gradient(circle at 15% 30%, rgba(74, 124, 89, 0.14), transparent 40%),
    radial-gradient(circle at 85% 60%, rgba(217, 130, 75, 0.16), transparent 42%),
    linear-gradient(180deg, var(--bg-soft), var(--bg));
}

.page-hero .section-tag {
  background: var(--green-soft);
  color: var(--green);
}

.page-title {
  font-size: clamp(28px, 3.6vw, 40px);
  color: var(--green-deep);
  letter-spacing: 3px;
}

.page-desc {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 15px;
}

/* ---------- 信息公示：资质证书 ---------- */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cert-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 22px;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.cert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.cert-media {
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}

.cert-media img {
  width: 100%;
  aspect-ratio: 320 / 420;
  object-fit: cover;
}

.cert-card h4 {
  font-size: 16px;
  color: var(--green-deep);
  margin-bottom: 4px;
}

.cert-card p {
  font-size: 13px;
  color: var(--ink-soft);
}

.cert-card .cert-status {
  display: inline-block;
  margin-top: 10px;
  font-size: 12px;
  color: var(--green);
  background: var(--green-soft);
  padding: 3px 12px;
  border-radius: 999px;
}

.certs-note {
  margin-top: 28px;
  text-align: center;
  font-size: 13px;
  color: var(--ink-faint);
}

/* ---------- 信息公示：最新动态 ---------- */
.news-section {
  background: linear-gradient(180deg, var(--bg), var(--bg-soft));
}

.news-list {
  max-width: 860px;
  margin: 0 auto;
}

.news-item {
  display: flex;
  gap: 26px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 18px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.news-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.news-date {
  flex-shrink: 0;
  text-align: center;
  min-width: 86px;
  padding: 12px 8px;
  border-radius: var(--radius-sm);
  background: var(--green-soft);
  color: var(--green-deep);
}

.news-date strong {
  display: block;
  font-family: var(--font-head);
  font-size: 24px;
  line-height: 1.2;
}

.news-date span {
  font-size: 12px;
}

.news-body h4 {
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 6px;
  transition: color 0.2s ease;
}

.news-item:hover .news-body h4 {
  color: var(--green-deep);
}

.news-body p {
  font-size: 14px;
  color: var(--ink-soft);
}

/* ---------- 联系我们 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 26px;
  align-items: start;
}

.contact-cards {
  display: grid;
  gap: 18px;
}

.contact-card {
  display: flex;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.contact-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
  background: var(--green-soft);
}

.contact-card:nth-child(even) .contact-icon {
  color: var(--orange-deep);
  background: var(--orange-soft);
}

.contact-card h4 {
  font-size: 15px;
  color: var(--green-deep);
  margin-bottom: 4px;
}

.contact-card p {
  font-size: 14px;
  color: var(--ink-soft);
}

.contact-form-wrap {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow-sm);
}

.contact-form-wrap h3 {
  font-size: 20px;
  color: var(--green-deep);
  margin-bottom: 6px;
}

.contact-form-wrap > p {
  font-size: 13px;
  color: var(--ink-faint);
  margin-bottom: 22px;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  background: var(--bg);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(74, 124, 89, 0.14);
}

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

.form-tip {
  font-size: 12px;
  color: var(--ink-faint);
}

.form-success {
  display: none;
  text-align: center;
  padding: 30px 10px;
}

.form-success.show {
  display: block;
}

.form-success .form-success-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
  background: var(--green-soft);
}

.form-success h4 {
  font-size: 18px;
  color: var(--green-deep);
  margin-bottom: 6px;
}

.form-success p {
  font-size: 14px;
  color: var(--ink-soft);
}

/* 地图占位 */
.map-placeholder {
  margin-top: 26px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  position: relative;
  height: 260px;
  background:
    radial-gradient(circle at 50% 45%, rgba(74, 124, 89, 0.12), transparent 40%),
    repeating-linear-gradient(0deg, transparent, transparent 38px, rgba(160, 150, 130, 0.16) 39px, transparent 40px),
    repeating-linear-gradient(90deg, transparent, transparent 38px, rgba(160, 150, 130, 0.16) 39px, transparent 40px),
    var(--bg-soft);
}

.map-pin {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -88%);
  width: 44px;
  height: 44px;
  border-radius: 50% 50% 50% 0;
  transform-origin: 50% 100%;
  background: var(--orange);
  transform: translate(-50%, -70%) rotate(-45deg);
  box-shadow: 0 8px 18px rgba(217, 130, 75, 0.4);
}

.map-pin::after {
  content: "";
  position: absolute;
  top: 12px;
  left: 12px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--card);
}

.map-label {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card);
  color: var(--ink-soft);
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  white-space: nowrap;
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 40px;
  background: linear-gradient(160deg, var(--green-deep), #274b33);
  color: #e9e2cf;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.1fr;
  gap: 40px;
  padding: 56px 0 40px;
}

.footer-brand img {
  width: 52px;
  margin-bottom: 12px;
}

.footer-brand h3 {
  font-size: 20px;
  letter-spacing: 2px;
  color: #f6ecd2;
}

.footer-brand p {
  font-size: 13px;
  color: rgba(233, 226, 207, 0.72);
  margin-top: 6px;
  max-width: 30ch;
}

.footer-col h4 {
  font-size: 15px;
  color: #f6ecd2;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

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

.footer-col ul a {
  font-size: 14px;
  color: rgba(233, 226, 207, 0.78);
  transition: color 0.2s ease;
}

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

.footer-contact li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: rgba(233, 226, 207, 0.78);
  margin-bottom: 10px;
}

.footer-bottom {
  border-top: 1px solid rgba(233, 226, 207, 0.16);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(233, 226, 207, 0.6);
}

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal.open {
  visibility: visible;
  opacity: 1;
}

.modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(50, 40, 28, 0.55);
  backdrop-filter: blur(4px);
}

.modal-card {
  position: relative;
  width: min(340px, 90%);
  background: var(--card);
  border-radius: 22px;
  padding: 34px 30px 30px;
  text-align: center;
  box-shadow: var(--shadow);
  transform: translateY(20px) scale(0.96);
  transition: transform 0.3s ease;
}

.modal.open .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-size: 20px;
  line-height: 1;
  color: var(--ink-soft);
  background: var(--bg-soft);
  transition: background 0.2s ease, color 0.2s ease;
}

.modal-close:hover {
  background: var(--orange-soft);
  color: var(--orange-deep);
}

.modal-qr {
  width: 200px;
  margin: 0 auto 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.modal-card h3 {
  font-size: 19px;
  color: var(--green-deep);
  margin-bottom: 6px;
}

.modal-card p {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 20px;
}

.modal-tip {
  font-size: 12px;
  color: var(--ink-faint);
  margin-top: 12px;
}

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

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

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

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

@media (max-width: 860px) {
  .section {
    padding: 56px 0;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 48px 0 64px;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions,
  .hero-facts {
    justify-content: center;
  }

  .brand-card {
    grid-template-columns: 1fr;
    padding: 30px 26px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 0 30px;
  }

  .news-item {
    flex-direction: column;
    gap: 14px;
  }

  .news-date {
    align-self: flex-start;
    min-width: auto;
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 8px 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--card);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-nav.open {
    max-height: 320px;
  }

  .nav-link {
    padding: 16px 24px;
    border-top: 1px solid var(--line);
  }

  .nav-link::after {
    display: none;
  }
}

@media (max-width: 560px) {
  .products-grid,
  .certs-grid {
    grid-template-columns: 1fr;
  }

  .shop-card {
    flex-direction: column;
    text-align: center;
    padding: 30px 24px;
  }

  .brand-text small {
    display: none;
  }
}