/* ============================================================
   徽丰农机 HUIFENG AGRI —— 全站样式
   设计系统：田野绿 #1E6B3F / 丰收橙 #E8832A / 纸白 #F7F5EF
   ============================================================ */

@font-face {
  font-family: "Noto Sans SC";
  src: url("../fonts/noto-sans-sc-var.woff2") format("woff2");
  font-weight: 300 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --green: #1E6B3F;
  --green-deep: #15502D;
  --green-dark: #0C2A1A;
  --orange: #E8832A;
  --orange-deep: #CE6C1B;
  --paper: #F7F5EF;
  --white: #FFFFFF;
  --ink: #1C2B23;
  --ink-2: #55665B;
  --ink-3: #7E8C82;
  --line: #DEE4DC;
  --tint: #EAF1EA;
  --tint-orange: #FAF0E1;
  --shadow: 0 10px 30px rgba(12, 42, 26, .08);
  --radius: 10px;
  --container: 1200px;
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure { margin: 0; }

:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 2px;
  border-radius: 4px;
}

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

.section { padding: 84px 0; }
.section--paper { background: var(--paper); }
.section--dark { background: var(--green-dark); }

/* ---------- 区块标题 ---------- */
.sec-head { margin-bottom: 44px; }
.sec-head h2 {
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 800;
  letter-spacing: 1px;
  line-height: 1.3;
}
.sec-head .lead {
  margin-top: 12px;
  max-width: 640px;
  color: var(--ink-2);
  font-size: 15px;
}
.sec-head__bar {
  width: 52px;
  height: 4px;
  background: var(--orange);
  border-radius: 2px;
  margin-top: 18px;
}
.sec-head--center { text-align: center; }
.sec-head--center .lead { margin-left: auto; margin-right: auto; }
.sec-head--center .sec-head__bar { margin-left: auto; margin-right: auto; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
  font-family: var(--font-sans);
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--orange); color: #fff; }
.btn--primary:hover { background: var(--orange-deep); }
.btn--ghost { border-color: rgba(255,255,255,.75); color: #fff; background: transparent; }
.btn--ghost:hover { background: rgba(255,255,255,.14); }
.btn--green { background: var(--green); color: #fff; }
.btn--green:hover { background: var(--green-deep); }
.btn--line { border-color: var(--green); color: var(--green); background: transparent; }
.btn--line:hover { background: var(--green); color: #fff; }

/* ---------- 顶栏 ---------- */
.topbar {
  background: var(--green-dark);
  color: rgba(255,255,255,.85);
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 36px;
  gap: 12px;
}
.topbar__left, .topbar__right { display: flex; gap: 20px; align-items: center; }
.topbar a:hover { color: #fff; }
.topbar__phone { color: var(--orange); font-weight: 700; }

/* ---------- 导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s;
}
.site-header.is-scrolled { box-shadow: 0 6px 20px rgba(12,42,26,.10); }
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 20px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo__text { display: flex; flex-direction: column; line-height: 1.2; }
.logo__cn { font-size: 21px; font-weight: 800; color: var(--green-deep); letter-spacing: 2px; }
.logo__en { font-size: 10px; color: var(--ink-3); letter-spacing: 1.6px; }
.nav__list { display: flex; gap: 6px; }
.nav__list a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  border-radius: 6px;
  transition: color .2s, background .2s;
}
.nav__list a:hover { color: var(--green); background: var(--tint); }
.nav__list a.is-active { color: var(--green); font-weight: 700; }
.nav__list a.is-active::after { display: none; }
.nav__cta { display: inline-flex; }

.nav__toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav__toggle span {
  width: 20px; height: 2px;
  background: var(--green-deep);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.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); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  min-height: 600px;
  color: #fff;
  background-size: cover;
  background-position: center 32%;
  background-image: url("../assets/img/hero-tractor.jpg");
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12,42,26,.88) 0%, rgba(12,42,26,.62) 46%, rgba(12,42,26,.18) 100%);
}
.hero__inner {
  position: relative;
  padding-top: 84px;
}
.hero__tag {
  display: inline-block;
  background: rgba(232,131,42,.16);
  border: 1px solid rgba(232,131,42,.55);
  color: #FFC896;
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 999px;
  letter-spacing: 2px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: 2px;
  max-width: 15em;
}
.hero p.hero__sub {
  margin-top: 18px;
  font-size: 17px;
  color: rgba(255,255,255,.88);
  max-width: 34em;
}
.hero__actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }

/* hero 数据条 */
.hero-stats {
  position: relative;
  margin-top: 64px;
  background: rgba(12,42,26,.72);
  backdrop-filter: blur(6px);
  border-top: 1px solid rgba(255,255,255,.16);
}
.hero-stats ul {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.hero-stats li {
  padding: 26px 22px;
  text-align: center;
  border-left: 1px solid rgba(255,255,255,.14);
}
.hero-stats li:first-child { border-left: 0; }
.hero-stats .num {
  font-size: 34px;
  font-weight: 800;
  color: var(--orange);
  line-height: 1.1;
}
.hero-stats .lbl { font-size: 13px; color: rgba(255,255,255,.82); margin-top: 6px; }

/* ---------- 内页页头 ---------- */
.page-banner {
  position: relative;
  padding: 88px 0;
  color: #fff;
  background-size: cover;
  background-position: center 30%;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12,42,26,.86), rgba(12,42,26,.55));
}
.page-banner__inner { position: relative; }
.page-banner h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 900; letter-spacing: 2px; }
.page-banner p { margin-top: 12px; color: rgba(255,255,255,.86); max-width: 40em; font-size: 15px; }
.breadcrumb { margin-top: 16px; font-size: 13px; color: rgba(255,255,255,.72); }
.breadcrumb a:hover { color: var(--orange); }
.page-banner--products { background-image: url("../assets/img/hero-harvester.jpg"); }
.page-banner--about { background-image: url("../assets/img/about-showroom.jpg"); }
.page-banner--news { background-image: url("../assets/img/news-expo.jpg"); }
.page-banner--contact { background-image: url("../assets/img/news-drone-team.jpg"); }

/* ---------- 业务板块卡片 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: #C9D8CB;
}
.feature-card__icon {
  width: 54px; height: 54px;
  border-radius: 12px;
  background: var(--tint);
  color: var(--green);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.feature-card h3 { font-size: 18px; font-weight: 700; }
.feature-card p { margin-top: 8px; font-size: 14px; color: var(--ink-2); }

/* ---------- 产品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s, box-shadow .25s;
}
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.product-card__img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--tint);
}
.product-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.product-card:hover .product-card__img img { transform: scale(1.05); }
.product-card__body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product-card__tags { display: flex; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.tag {
  display: inline-block;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--tint);
  color: var(--green);
  font-weight: 600;
}
.tag--hot { background: var(--tint-orange); color: var(--orange-deep); }
.product-card h3 { font-size: 19px; font-weight: 700; }
.product-card .model { font-size: 13px; color: var(--ink-3); letter-spacing: .5px; margin-top: 2px; }
.product-card .desc { margin-top: 10px; font-size: 14px; color: var(--ink-2); }
.product-card .params {
  margin-top: 16px;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
}
.product-card .params span { font-size: 13px; color: var(--ink-2); }
.product-card .params b { color: var(--ink); font-weight: 600; }
.product-card__foot {
  margin-top: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.product-card__foot .price-note { font-size: 13px; color: var(--ink-3); }
.btn--sm { padding: 8px 16px; font-size: 14px; }

/* ---------- 图文分栏（关于首页） ---------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}
.split__media { position: relative; }
.split__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
}
.split__media .badge-num {
  position: absolute;
  right: -14px;
  bottom: -14px;
  background: var(--orange);
  color: #fff;
  border-radius: 12px;
  padding: 16px 22px;
  box-shadow: var(--shadow);
  line-height: 1.2;
}
.split__media .badge-num b { display: block; font-size: 26px; font-weight: 800; }
.split__media .badge-num span { font-size: 12px; opacity: .92; }
.split__body h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; line-height: 1.35; }
.split__body .lead { margin-top: 16px; color: var(--ink-2); font-size: 15px; }
.split__points { margin-top: 24px; display: grid; gap: 14px; }
.split__points li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; }
.split__points .dot {
  flex: none;
  width: 22px; height: 22px;
  margin-top: 3px;
  border-radius: 50%;
  background: var(--tint);
  color: var(--green);
  display: flex; align-items: center; justify-content: center;
}
.split__points b { font-weight: 700; }
.split__actions { margin-top: 30px; }

/* ---------- 品牌条 ---------- */
.brand-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 30px 0;
}
.brand-strip .container { display: flex; align-items: center; gap: 36px; flex-wrap: wrap; }
.brand-strip__label { font-size: 14px; color: var(--ink-3); flex: none; }
.brand-strip ul { display: flex; gap: 30px; flex-wrap: wrap; align-items: center; }
.brand-strip li { font-size: 17px; font-weight: 700; color: var(--ink-2); letter-spacing: 1px; }
.brand-strip li:hover { color: var(--green); }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s, box-shadow .25s;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.news-card__img { aspect-ratio: 4 / 3; overflow: hidden; background: var(--tint); }
.news-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-card:hover .news-card__img img { transform: scale(1.05); }
.news-card__body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-card__meta { display: flex; gap: 12px; align-items: center; font-size: 12.5px; color: var(--ink-3); }
.news-card__meta .cat { color: var(--orange-deep); font-weight: 700; }
.news-card h3 { margin-top: 10px; font-size: 17px; font-weight: 700; line-height: 1.45; }
.news-card p { margin-top: 10px; font-size: 14px; color: var(--ink-2); flex: 1; }
.news-card details { margin-top: 14px; }
.news-card summary {
  cursor: pointer;
  font-size: 13.5px;
  color: var(--green);
  font-weight: 600;
  user-select: none;
}
.news-card summary:hover { color: var(--orange-deep); }
.news-card details[open] summary { margin-bottom: 10px; }
.news-card details .full { font-size: 14px; color: var(--ink-2); border-top: 1px dashed var(--line); padding-top: 10px; }

/* ---------- CTA 带 ---------- */
.cta-band { background: var(--green-dark); color: #fff; }
.cta-band .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; }
.cta-band p { margin-top: 8px; color: rgba(255,255,255,.78); }
.cta-band__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--green-dark); color: rgba(255,255,255,.72); font-size: 14px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding: 60px 0 44px;
}
.footer-grid h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-grid li + li { margin-top: 10px; }
.footer-grid a:hover { color: var(--orange); }
.footer__about p { margin-top: 14px; color: rgba(255,255,255,.62); line-height: 1.9; }
.footer__contact li { display: flex; gap: 10px; }
.footer__contact .lbl { color: rgba(255,255,255,.5); flex: none; }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}

/* ---------- 产品页：筛选 ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-btn {
  padding: 9px 20px;
  border: 1.5px solid var(--line);
  background: #fff;
  border-radius: 999px;
  font-size: 14px;
  color: var(--ink-2);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all .2s;
}
.filter-btn:hover { border-color: var(--green); color: var(--green); }
.filter-btn.is-active { background: var(--green); border-color: var(--green); color: #fff; font-weight: 600; }
.product-grid.is-filtering .product-card { display: none; }
.product-count { font-size: 13px; color: var(--ink-3); margin-top: 10px; }

/* ---------- 关于页：时间轴 ---------- */
.timeline { display: grid; gap: 0; }
.tl-row {
  display: grid;
  grid-template-columns: 130px 60px 1fr;
  gap: 0;
}
.tl-time {
  padding: 22px 0;
  text-align: right;
  font-size: 17px;
  font-weight: 800;
  color: var(--green);
  letter-spacing: .5px;
}
.tl-axis { position: relative; display: flex; justify-content: center; }
.tl-axis::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: var(--line);
}
.tl-dot {
  position: relative;
  z-index: 1;
  align-self: center;
  justify-self: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--orange);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--orange);
  margin: 22px 0;
}
.tl-body { padding: 22px 0 26px 10px; }
.tl-body h3 { font-size: 17px; font-weight: 700; }
.tl-body p { margin-top: 6px; font-size: 14px; color: var(--ink-2); max-width: 46em; }
.tl-row:first-child .tl-dot { margin-top: 22px; }

/* ---------- 关于页：资质与荣誉 ---------- */
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.honor-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 22px;
  text-align: center;
  transition: transform .25s, box-shadow .25s;
}
.honor-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.honor-card .mark { font-size: 30px; color: var(--orange); line-height: 1; }
.honor-card h3 { margin-top: 14px; font-size: 15.5px; font-weight: 700; }
.honor-card p { margin-top: 6px; font-size: 13px; color: var(--ink-2); }

/* ---------- 关于页：价值观 ---------- */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.value-card { background: var(--green-dark); color: #fff; border-radius: var(--radius); padding: 30px 28px; }
.value-card .no { font-size: 30px; font-weight: 900; color: var(--orange); line-height: 1; }
.value-card h3 { margin-top: 14px; font-size: 18px; font-weight: 700; }
.value-card p { margin-top: 10px; font-size: 14px; color: rgba(255,255,255,.72); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
}
.contact-card .icon {
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--tint);
  color: var(--green);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.contact-card h3 { font-size: 16px; font-weight: 700; }
.contact-card p { margin-top: 6px; font-size: 14px; color: var(--ink-2); line-height: 1.8; }
.contact-card .big { font-size: 18px; font-weight: 800; color: var(--green-deep); }

.network-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.net-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 24px;
}
.net-card h3 { font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 10px; }
.net-card h3 .pin { color: var(--orange); }
.net-card p { margin-top: 8px; font-size: 13.5px; color: var(--ink-2); line-height: 1.9; }
.net-card--main { border-color: var(--green); background: var(--tint); }

.faq-list { max-width: 860px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 14px;
}
.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 700;
  font-size: 15.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  color: var(--orange);
  font-weight: 700;
  flex: none;
  transition: transform .2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .ans { padding: 0 22px 20px; font-size: 14.5px; color: var(--ink-2); border-top: 1px dashed var(--line); padding-top: 14px; margin: 0 0 0; }

/* ---------- 新闻列表（文本条目） ---------- */
.news-list { margin-top: 44px; }
.news-list-item {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 30px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.news-list-item:last-child { border-bottom: 1px solid var(--line); }
.news-list-item__meta { font-size: 13px; color: var(--ink-3); padding-top: 3px; }
.news-list-item__meta time { display: block; }
.news-list-item__meta .cat { color: var(--orange-deep); font-weight: 700; margin-top: 6px; }
.news-list-item h3 { font-size: 17px; font-weight: 700; line-height: 1.45; }
.news-list-item p { margin-top: 8px; font-size: 14px; color: var(--ink-2); }
.news-list-item details { margin-top: 12px; }
.news-list-item summary {
  cursor: pointer;
  font-size: 13.5px;
  color: var(--green);
  font-weight: 600;
  user-select: none;
}
.news-list-item summary:hover { color: var(--orange-deep); }
.news-list-item details .full {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-2);
  border-top: 1px dashed var(--line);
  padding-top: 10px;
}

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  border: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all .3s;
  z-index: 90;
  box-shadow: var(--shadow);
}
.back-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { background: var(--green-deep); }

/* ---------- 入场动效 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .section { padding: 64px 0; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .network-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .topbar__right { display: none; }
  .topbar .container { justify-content: center; }
  .nav__toggle { display: flex; }
  .nav__list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 10px 0 18px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 14px 24px rgba(12,42,26,.10);
    display: none;
  }
  .nav__list.is-open { display: flex; }
  .nav__list a { padding: 13px 24px; font-size: 16px; }
  .nav__cta { display: none; }
  .hero { min-height: 540px; }
  .hero-stats ul { grid-template-columns: repeat(2, 1fr); }
  .hero-stats li:nth-child(3) { border-left: 0; }
  .hero-stats li { padding: 18px 14px; }
  .hero-stats li:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.14); }
  .feature-grid { grid-template-columns: 1fr; }
  .product-grid, .news-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .cta-band .container { flex-direction: column; align-items: flex-start; }
  .brand-strip .container { gap: 16px; }
  .tl-row { grid-template-columns: 92px 44px 1fr; }
  .news-list-item { grid-template-columns: 1fr; gap: 10px; }
}

@media (max-width: 480px) {
  .section { padding: 52px 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .honor-grid, .network-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .tl-row { grid-template-columns: 74px 36px 1fr; }
  .tl-time { font-size: 14px; }
}

/* ---------- 无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
  .reveal { opacity: 1; transform: none; }
}