/* =========================================================
   山东临正智慧农业装备有限公司 - 官网全局样式
   设计主题：智慧农业 · 品牌蓝 + 麦穗金
   品牌色来源：公司LOGO（#304878）与宣传册主色（#1060b0）
   ========================================================= */

/* ---------- 图片防下载保护 ----------
   说明：禁止拖拽、禁止选中、禁止长按保存（配合 js/main.js 拦截右键等） */
img {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  user-drag: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  pointer-events: auto;
}

/* ---------- 资质证书保护（加水印，等图片到位后套用） ---------- */
.cer-protect {
  position: relative;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}
.cer-protect::after {
  content: "临正智慧农业 版权所有";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, .58);
  font-size: clamp(14px, 2.2vw, 26px);
  font-weight: 600;
  letter-spacing: 6px;
  white-space: nowrap;
  text-shadow: 0 0 6px rgba(0, 0, 0, .45), 0 0 2px rgba(0, 0, 0, .6);
  transform: rotate(-18deg);
  pointer-events: none;
  z-index: 3;
}
.cer-protect img {
  display: block;
  width: 100%;
  height: auto;
  filter: saturate(.92);
  -webkit-user-drag: none;
  user-select: none;
}

/* ---------- 资质证书墙 ---------- */
.cer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 34px;
}
.cer-protect {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(20, 60, 110, .1);
  box-shadow: 0 10px 30px rgba(16, 60, 110, .10);
  padding: 10px;
  transition: transform .35s ease, box-shadow .35s ease;
}
.cer-protect:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(16, 60, 110, .16); }
.cer-protect figcaption {
  text-align: center;
  padding: 10px 4px 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
}
.cer-group { margin-bottom: 36px; }
.cer-group:last-child { margin-bottom: 0; }
.cer-group-title {
  font-size: 16px; font-weight: 600; color: var(--navy);
  display: flex; align-items: center; gap: 10px;
}
.cer-group-title::before {
  content: ""; width: 18px; height: 3px; border-radius: 2px; background: var(--accent);
}
.cer-group .cer-grid { margin-top: 18px; }
/* 营业执照单独一行，控制宽度 */
.cer-grid--solo { grid-template-columns: minmax(0, 320px); margin-top: 18px; }
/* 荣誉证书堆叠缩略墙 */
.cert-stack { display: flex; flex-wrap: wrap; gap: 14px 16px; margin-top: 18px; }
.cert-stack .stack-item {
  position: relative; width: 132px; padding: 4px; border-radius: 8px;
  background: #fff; border: 1px solid rgba(20, 60, 110, .12);
  box-shadow: 0 6px 16px rgba(16, 60, 110, .14);
  transition: transform .3s ease, box-shadow .3s ease;
}
.cert-stack .stack-item img { display: block; width: 100%; height: auto; border-radius: 4px; }
.cert-stack .stack-item:nth-child(4n+1) { transform: rotate(-2.4deg); }
.cert-stack .stack-item:nth-child(4n+2) { transform: rotate(1.8deg) translateY(4px); }
.cert-stack .stack-item:nth-child(4n+3) { transform: rotate(-1.4deg) translateY(-3px); }
.cert-stack .stack-item:nth-child(4n) { transform: rotate(2.6deg) translateY(2px); }
.cert-stack .stack-item:hover { transform: rotate(0) scale(1.45); z-index: 6; box-shadow: 0 14px 30px rgba(16, 60, 110, .3); }
.cer-note {
  margin-top: 18px;
  text-align: center;
  font-size: 12.5px;
  color: var(--muted);
  opacity: .85;
}
@media (max-width: 820px) { .cer-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 520px) {
  .cer-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-stack .stack-item { width: 106px; }
}

/* ---------- 防下载提示气泡 ---------- */
.protect-toast {
  position: fixed;
  left: 50%;
  bottom: 90px;
  transform: translate(-50%, 20px);
  background: rgba(14, 42, 77, .92);
  color: #fff;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 999px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .28);
  opacity: 0;
  visibility: hidden;
  transition: all .28s ease;
  z-index: 9999;
  pointer-events: none;
  white-space: nowrap;
}
.protect-toast.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

/* ---------- 在线宣传册 ---------- */
.brochure-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; margin-top: 40px;
}
.brochure-page {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius-card);
  padding: 14px; margin: 0; box-shadow: 0 6px 18px rgba(16, 96, 176, .06);
  transition: transform .3s ease, box-shadow .3s ease;
}
.brochure-page:hover { transform: translateY(-4px); box-shadow: 0 14px 32px rgba(16, 96, 176, .14); }
.brochure-page img {
  width: 100%; height: auto; display: block; border-radius: calc(var(--radius) - 4px);
  background: #f0f4fa;
}
.brochure-page figcaption {
  text-align: center; font-size: 13px; color: var(--muted); letter-spacing: .06em;
  padding-top: 10px; font-weight: 600;
}
@media (max-width: 900px) { .brochure-grid { grid-template-columns: 1fr; gap: 20px; } }

/* ---------- 设计变量 ---------- */
:root {
  /* 颜色 */
  --accent: #1060b0;        /* 主色：品牌蓝 */
  --accent-light: #3d8bd4;  /* 亮蓝 */
  --accent-dark: #0a4a8c;   /* 深蓝 */
  --gold: #e9b44c;          /* 辅色：麦穗金 */
  --gold-dark: #c9942e;
  --dark: #0e2a4d;          /* 深色底（页脚/首屏） */
  --dark-2: #13385f;
  --ink: #16283c;           /* 正文深色 */
  --muted: #5a6b80;         /* 次要文字 */
  --bg: #f5f8fc;            /* 页面背景 */
  --bg2: #ffffff;           /* 卡片/表面 */
  --rule: #e2e9f2;          /* 边框 */
  --danger: #c0392b;

  /* 字体 */
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", "WenQuanYi Micro Hei", sans-serif;
  --font-num: "Segoe UI", Arial, sans-serif;

  /* 尺寸 */
  --container: 1200px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 20px rgba(14, 42, 77, .08);
  --shadow-lg: 0 10px 40px rgba(14, 42, 77, .12);
  --header-h: 72px;
}

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden; /* 防止移动端侧滑菜单/元素越界产生水平滚动 */
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent-dark); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 16px; } /* 16px 防止 iOS 聚焦自动放大 */

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 84px 0; }
.section--bg { background: var(--bg2); }

/* ---------- 数字展示字体 ---------- */
.num { font-family: var(--font-num); }

/* ---------- 通用标题 ---------- */
.sec-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.sec-head .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--accent); font-size: 14px; font-weight: 600;
  letter-spacing: .12em; margin-bottom: 12px;
}
.sec-head .eyebrow::before, .sec-head .eyebrow::after {
  content: ""; width: 24px; height: 2px; background: var(--gold);
}
.sec-head h2 { font-size: 34px; font-weight: 700; line-height: 1.3; color: var(--ink); }
.sec-head .sub { color: var(--muted); margin-top: 12px; font-size: 15px; }
@media (max-width: 640px) { .sec-head h2 { font-size: 26px; } }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px; border: 2px solid transparent;
  font-size: 15px; font-weight: 600; transition: all .25s;
}
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(16, 96, 176,.35); }
.btn--gold { background: var(--gold); color: #3a2a00; }
.btn--gold:hover { background: var(--gold-dark); color: #fff; transform: translateY(-2px); }
.btn--outline { border-color: #fff; color: #fff; background: transparent; }
.btn--outline:hover { background: #fff; color: var(--accent-dark); }
.btn--ghost { border-color: var(--accent); color: var(--accent); background: transparent; }
.btn--ghost:hover { background: var(--accent); color: #fff; }
.btn--sm { padding: 8px 20px; font-size: 14px; }

/* =========================================================
   顶部导航
   ========================================================= */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.96); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
  transition: box-shadow .25s;
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(14, 42, 77,.1); }
.header-inner {
  max-width: var(--container); margin: 0 auto; padding: 0 24px;
  height: var(--header-h); display: flex; align-items: center; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-img { height: 40px; width: auto; display: block; }
.logo-img--light { filter: brightness(0) invert(1); opacity: .95; }
.logo-mark {
  width: 42px; height: 42px; border-radius: 10px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex; align-items: center; justify-content: center; color: #fff;
}
.logo-name { font-size: 18px; font-weight: 700; color: var(--ink); line-height: 1.2; }
.logo-name small { display: block; font-size: 11px; font-weight: 400; color: var(--muted); letter-spacing: .08em; }

.main-nav { margin-left: auto; display: flex; align-items: center; }
.main-nav > ul { display: flex; gap: 4px; }
.main-nav a {
  display: block; padding: 10px 16px; font-size: 15px; font-weight: 500;
  color: var(--ink); border-radius: 8px; position: relative;
}
.main-nav a:hover { color: var(--accent); background: rgba(16, 96, 176,.06); }
.main-nav a.active { color: var(--accent); font-weight: 600; }
.main-nav a.active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 4px;
  height: 2px; border-radius: 2px; background: var(--accent);
}
.header-cta { flex-shrink: 0; }
.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--rule);
  border-radius: 8px; background: var(--bg2); position: relative;
}
.nav-toggle span {
  position: absolute; left: 11px; right: 11px; height: 2px; border-radius: 2px;
  background: var(--ink); transition: all .3s;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle.open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

@media (max-width: 900px) {
  /* 移动端移除 backdrop-filter：该属性会使子元素 fixed 定位退化，导致全屏菜单高度塌陷 */
  .site-header { backdrop-filter: none; -webkit-backdrop-filter: none; }
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    height: calc(100dvh - var(--header-h)); /* dvh 适配移动端动态地址栏 */
    background: var(--bg2); flex-direction: column; padding: 16px 24px;
    overflow-y: auto;
    /* 关闭时不渲染，杜绝 fixed 全屏菜单造成的水平滚动 */
    display: none;
  }
  .main-nav.open { display: flex; animation: navSlideIn .32s ease forwards; }
  @keyframes navSlideIn {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
  }
  .main-nav > ul { flex-direction: column; width: 100%; gap: 0; }
  .main-nav a { padding: 14px 12px; font-size: 16px; border-bottom: 1px solid var(--rule); border-radius: 0; }
  .main-nav a.active::after { display: none; }
  .main-nav a.active { background: rgba(16, 96, 176,.08); }
  .header-cta { margin-left: auto; }
  .header-cta .btn { padding: 9px 18px; font-size: 14px; }
  .lang-btn { min-height: 40px; padding: 6px 12px; font-size: 14px; }
}
@media (max-width: 420px) {
  .logo-img { height: 30px; }
  .header-cta { display: none; }
}

/* =========================================================
   首屏 Hero 轮播（参考溢彩风格：大图 + 页码 + 箭头）
   ========================================================= */
.hero-carousel {
  position: relative; overflow: hidden; height: 620px; background: var(--dark);
}
.hero-carousel .slides, .hero-carousel .slide { position: absolute; inset: 0; }
.hero-carousel .slide { opacity: 0; visibility: hidden; transition: opacity .8s ease; }
.hero-carousel .slide.active { opacity: 1; visibility: visible; z-index: 1; }
.hero-carousel .slide-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transform: scale(1.06); transition: transform 7s ease-out;
}
.hero-carousel .slide.active .slide-bg { transform: scale(1); }
.hero-carousel .slide-mask {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(14,42,77,.94) 0%, rgba(14,42,77,.82) 38%, rgba(14,42,77,.35) 68%, rgba(14,42,77,.18) 100%);
}
.hero-carousel .slide-content {
  position: relative; z-index: 2; color: #fff;
  padding-top: 140px; max-width: 720px; min-height: 480px;
}
.hero-carousel .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(233,180,76,.15); color: var(--gold);
  border: 1px solid rgba(233,180,76,.4);
  padding: 6px 14px; border-radius: 50px; font-size: 13px; font-weight: 600; letter-spacing: .06em;
}
.hero-carousel .slide-title { font-size: 46px; font-weight: 700; line-height: 1.25; margin: 20px 0 16px; }
.hero-carousel .slide-title em { font-style: normal; color: var(--gold); }
.hero-carousel p.lead { font-size: 17px; color: rgba(255,255,255,.85); max-width: 560px; margin-bottom: 34px; line-height: 1.8; }
.hero-carousel .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* 箭头 */
.carousel-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 52px; height: 52px; border-radius: 50%; border: 1px solid rgba(255,255,255,.35);
  background: rgba(14,42,77,.35); color: #fff; font-size: 28px; line-height: 1;
  cursor: pointer; transition: all .25s; backdrop-filter: blur(4px);
}
.carousel-arrow:hover { background: var(--accent); border-color: var(--accent); }
.carousel-arrow.prev { left: 28px; }
.carousel-arrow.next { right: 28px; }

/* 页码与指示点 */
.carousel-nav {
  position: absolute; right: 32px; bottom: 34px; z-index: 5;
  display: flex; align-items: center; gap: 22px;
}
.carousel-dots { display: flex; gap: 10px; }
.carousel-dots .dot {
  width: 34px; height: 4px; border-radius: 4px; border: none; padding: 0;
  background: rgba(255,255,255,.35); cursor: pointer; transition: all .3s;
}
.carousel-dots .dot.active { background: var(--gold); width: 52px; }
.carousel-count { color: rgba(255,255,255,.75); font-size: 15px; letter-spacing: .12em; font-weight: 600; }
.carousel-count .cur { color: #fff; font-size: 22px; }
.carousel-count .sep { margin: 0 3px; opacity: .5; }

/* 轮播下方数据统计条 */
.stats-band {
  background: linear-gradient(90deg, var(--dark) 0%, var(--dark-2) 60%, #17436b 100%);
  color: #fff; padding: 26px 0;
}
.stats-band .stats { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.stats-band .s { display: flex; flex-direction: column; align-items: center; gap: 4px; min-width: 120px; }
.stats-band .s .num { font-size: 30px; font-weight: 700; color: var(--gold); }
.stats-band .s .u { font-size: 16px; }
.stats-band .s span:last-child { font-size: 14px; color: rgba(255,255,255,.75); }

/* 语言切换 */
.lang-switch { display: flex; align-items: center; gap: 2px; margin-left: 4px; }
.lang-btn {
  border: 1px solid var(--rule); background: transparent; color: var(--muted);
  font-size: 12.5px; font-weight: 600; padding: 5px 10px; cursor: pointer; border-radius: 5px;
  transition: all .2s; min-height: 32px; line-height: 1.2;
}
.lang-btn:hover { border-color: var(--accent); color: var(--accent); }
.lang-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.lang-btn + .lang-btn { border-left: none; border-radius: 0 5px 5px 0; }
.lang-btn:first-child { border-radius: 5px 0 0 5px; }

/* 兼容旧样式（保留类名以防其他页面引用） */
.hero { position: relative; overflow: hidden; }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero-visual { position: relative; }
.hero-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: 18px; padding: 24px; backdrop-filter: blur(6px); }

@media (max-width: 900px) {
  .hero-carousel { height: 560px; }
  .hero-carousel .slide-title { font-size: 32px; }
  .hero-carousel .slide-content { padding-top: 110px; min-height: 420px; }
  .carousel-arrow { width: 42px; height: 42px; font-size: 22px; }
  .carousel-arrow.prev { left: 14px; }
  .carousel-arrow.next { right: 14px; }
  .carousel-nav { right: 18px; bottom: 22px; }
}
@media (max-width: 560px) {
  .hero-carousel { height: 520px; }
  .hero-carousel .slide-title { font-size: 27px; }
  .hero-carousel p.lead { font-size: 15px; }
  .carousel-nav { display: none; }
}
.hero-badge {
  position: absolute; top: -18px; right: -8px;
  background: var(--gold); color: #3a2a00; font-size: 13px; font-weight: 700;
  padding: 8px 16px; border-radius: 50px; box-shadow: var(--shadow-lg); transform: rotate(3deg);
}
@media (max-width: 900px) {
  .hero { padding: 72px 0 64px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 32px; }
  .hero-visual { max-width: 480px; }
}

/* =========================================================
   功能亮点卡片
   ========================================================= */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 28px 24px; transition: all .3s;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(16, 96, 176,.35); }
.feature-card .icon {
  width: 54px; height: 54px; border-radius: 14px; margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(16, 96, 176,.12), rgba(233,180,76,.16));
  display: flex; align-items: center; justify-content: center; color: var(--accent);
}
.feature-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--muted); }
@media (max-width: 1024px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features-grid { grid-template-columns: 1fr; } }

/* =========================================================
   产品卡片
   ========================================================= */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius);
  overflow: hidden; transition: all .3s; display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-thumb {
  aspect-ratio: 4/3; background: linear-gradient(160deg, #e8f0fa, #dfeaf6);
  display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden;
}
.product-thumb svg { width: 58%; height: 58%; }
.product-thumb img, .about-visual img { width: 100%; height: 100%; object-fit: cover; display: block; }
/* 产品卡片：完整显示产品主体（白底 contain） */
.products-grid.pg-cards .product-thumb { aspect-ratio: 4/5; background: #fff; }
.products-grid.pg-cards .product-thumb img { object-fit: contain; padding: 12px; }

.product-thumb .tag {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: var(--accent); color: #fff; font-size: 12px; padding: 3px 12px; border-radius: 50px;
}
.product-thumb .tag.hot { background: var(--gold); color: #3a2a00; }
.product-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product-body h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.product-body p { font-size: 14px; color: var(--muted); flex: 1; }
.product-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; }
.product-meta .more { font-size: 14px; font-weight: 600; color: var(--accent); display: inline-flex; align-items: center; gap: 4px; }
@media (max-width: 1024px) { .products-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .products-grid { grid-template-columns: 1fr; } }

/* ---------- 主推产品横幅（产品详情页顶部） ---------- */
.hot-banner {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: linear-gradient(120deg, #fff8e8, #fff3d6 55%, #ffeec2);
  border: 1px solid rgba(233,180,76,.55); border-radius: var(--radius);
  padding: 14px 22px; font-size: 15px; color: #5a4a12; font-weight: 500;
}
.hot-banner .hot-badge {
  background: var(--gold); color: #3a2a00; font-size: 13px; font-weight: 700;
  padding: 5px 14px; border-radius: 50px; letter-spacing: .02em; white-space: nowrap;
}
@media (max-width: 560px) { .hot-banner { padding: 12px 16px; font-size: 13px; } }

/* ---------- 产品中心主推大卡（宽幅展示） ---------- */
.featured-card {
  background: linear-gradient(120deg, #fff9ec, #fffdf6 60%, #f4ead2);
  border: 1px solid rgba(233,180,76,.6); border-radius: var(--radius);
  padding: 28px 30px; margin-bottom: 34px; position: relative; overflow: hidden;
  display: grid; grid-template-columns: 300px 1fr; gap: 34px; align-items: center;
}
.featured-card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(45% 80% at 92% 12%, rgba(233,180,76,.22), transparent 60%);
}
.featured-card .fc-thumb {
  aspect-ratio: 4/3; background: #fff;
  border-radius: calc(var(--radius) - 6px); display: flex; align-items: center;
  justify-content: center; position: relative; overflow: hidden;
}
.featured-card .fc-thumb svg { width: 62%; height: 62%; }
.featured-card .fc-thumb img { width: 100%; height: 100%; object-fit: contain; background: #fff; display: block; padding: 14px; }
.featured-card .fc-badge {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: var(--gold); color: #3a2a00; font-size: 13px; font-weight: 700;
  padding: 4px 14px; border-radius: 50px;
}
.featured-card h3 { font-size: 24px; font-weight: 700; margin: 4px 0 10px; color: var(--dark); }
.featured-card p { font-size: 14.5px; color: #6b5a2a; line-height: 1.85; max-width: 640px; }
.featured-card .fc-meta { display: flex; align-items: center; gap: 18px; margin-top: 18px; flex-wrap: wrap; }
.featured-card .fc-spec { font-size: 13px; color: #8a743a; display: inline-flex; align-items: center; gap: 6px; }
.featured-card .fc-spec b { color: var(--accent); font-weight: 700; }
@media (max-width: 900px) { .featured-card { grid-template-columns: 1fr; padding: 22px; } }

/* ---------- 页面顶部横幅（内页） ---------- */
.page-hero {
  background: linear-gradient(120deg, var(--dark), var(--dark-2) 60%, #17436b);
  color: #fff; padding: 64px 0 56px; position: relative; overflow: hidden;
}
.page-hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(50% 70% at 88% 20%, rgba(233,180,76,.16), transparent 60%);
}
.page-hero .container { position: relative; }
.page-hero .crumbs { font-size: 13px; color: rgba(255,255,255,.6); margin-bottom: 14px; }
.page-hero .crumbs a { color: rgba(255,255,255,.75); }
.page-hero .crumbs a:hover { color: var(--gold); }
.page-hero h1 { font-size: 34px; font-weight: 700; }
.page-hero p { color: rgba(255,255,255,.8); margin-top: 10px; max-width: 640px; }
@media (max-width: 640px) { .page-hero { padding: 48px 0 40px; } .page-hero h1 { font-size: 26px; } }

/* ---------- 分类筛选 ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 36px; }
.filter-bar button {
  border: 1px solid var(--rule); background: var(--bg2); color: var(--muted);
  padding: 8px 22px; border-radius: 50px; font-size: 14px; transition: all .2s;
}
.filter-bar button.active, .filter-bar button:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* =========================================================
   关于我们摘要
   ========================================================= */
.about-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-visual {
  border-radius: var(--radius); overflow: hidden; position: relative;
  background: linear-gradient(150deg, var(--accent), var(--accent-dark));
  aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; color: #fff;
}
.about-visual svg { width: 55%; height: 55%; opacity: .95; }
.about-visual .caption {
  position: absolute; left: 18px; bottom: 18px; background: rgba(14, 42, 77,.72);
  color: #fff; font-size: 13px; padding: 8px 14px; border-radius: 8px; backdrop-filter: blur(4px);
}
.about-text h2 { font-size: 30px; font-weight: 700; margin-bottom: 18px; line-height: 1.35; }
.about-text h2 em { font-style: normal; color: var(--accent); }
.about-text p { color: var(--muted); margin-bottom: 16px; font-size: 15px; }
.about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 24px 0 28px; }
@media (max-width: 560px) { .about-points { grid-template-columns: 1fr; gap: 10px; } }
.about-points li {
  display: flex; gap: 10px; align-items: flex-start; font-size: 14px; font-weight: 500;
}
.about-points .tick {
  width: 20px; height: 20px; border-radius: 50%; flex-shrink: 0; margin-top: 2px;
  background: rgba(16, 96, 176,.12); color: var(--accent);
  display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700;
}
@media (max-width: 900px) { .about-wrap { grid-template-columns: 1fr; gap: 32px; } }

/* ---------- 数据统计条 ---------- */
.stats-band { background: linear-gradient(120deg, var(--accent-dark), var(--accent)); color: #fff; padding: 52px 0; }
.stats-band .stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stats-band .s b { display: block; font-size: 40px; font-weight: 700; color: #fff; }
.stats-band .s b .u { font-size: 18px; color: var(--gold); }
.stats-band .s span { font-size: 14px; color: rgba(255,255,255,.82); }
@media (max-width: 768px) { .stats-band .stats { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; } }

/* ---------- 物联网预留区 ---------- */
.iot-band {
  border-radius: 18px; overflow: hidden; position: relative;
  background: linear-gradient(120deg, #0d2b4d, #14406e 70%, #1060b0);
  color: #fff; padding: 56px 56px;
}
.iot-band::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(40% 90% at 92% 10%, rgba(233,180,76,.2), transparent 60%),
    radial-gradient(30% 60% at 5% 100%, rgba(61, 139, 212,.25), transparent 60%);
}
.iot-band .inner { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.iot-band h2 { font-size: 28px; margin-bottom: 12px; }
.iot-band h2 em { font-style: normal; color: var(--gold); }
.iot-band p { color: rgba(255,255,255,.8); font-size: 15px; }
.iot-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
.iot-features li {
  display: flex; gap: 10px; align-items: center; font-size: 14px;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12);
  padding: 10px 14px; border-radius: 10px;
}
.iot-features .ico { color: var(--gold); flex-shrink: 0; }
.iot-status {
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16);
  border-radius: 16px; padding: 26px; text-align: center;
}
.iot-status .badge {
  display: inline-block; background: var(--gold); color: #3a2a00;
  font-size: 13px; font-weight: 700; padding: 5px 16px; border-radius: 50px; margin-bottom: 18px;
}
.iot-status h3 { font-size: 18px; margin-bottom: 8px; }
.iot-status p { font-size: 13px; color: rgba(255,255,255,.68); margin-bottom: 20px; }
.iot-status .nodes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.iot-status .nodes div {
  background: rgba(255,255,255,.06); border-radius: 10px; padding: 12px 6px;
}
.iot-status .nodes b { display: block; font-size: 18px; color: var(--gold); }
.iot-status .nodes span { font-size: 12px; color: rgba(255,255,255,.6); }
@media (max-width: 900px) {
  .iot-band { padding: 40px 24px; }
  .iot-band .inner { grid-template-columns: 1fr; }
}
@media (max-width: 560px) { .iot-features { grid-template-columns: 1fr; } }

/* ---------- 新闻列表 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius);
  overflow: hidden; transition: all .3s; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-card .date {
  display: flex; align-items: center; gap: 8px; padding: 16px 20px 0;
  font-size: 13px; color: var(--muted);
}
.news-card .date .d { color: var(--accent); font-weight: 700; font-size: 15px; }
.news-card h3 { padding: 10px 20px; font-size: 16px; font-weight: 600; line-height: 1.5; }
.news-card h3 a { color: var(--ink); }
.news-card h3 a:hover { color: var(--accent); }
.news-card .excerpt { padding: 0 20px 20px; font-size: 14px; color: var(--muted); flex: 1; }
.news-list { background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; }
.news-list a {
  display: flex; align-items: center; gap: 20px; padding: 20px 26px;
  border-bottom: 1px solid var(--rule); transition: background .2s;
}
.news-list a:last-child { border-bottom: 0; }
.news-list a:hover { background: rgba(16, 96, 176,.04); }
.news-list .date { font-size: 13px; color: var(--muted); flex-shrink: 0; min-width: 84px; }
.news-list .date b { color: var(--accent); font-size: 20px; display: block; }
.news-list h3 { font-size: 16px; font-weight: 600; color: var(--ink); flex: 1; }
.news-list .arrow { color: var(--accent); }
@media (max-width: 1024px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .news-grid { grid-template-columns: 1fr; } }

/* =========================================================
   应用场景（插画卡片）
   ========================================================= */
.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.scene-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: 14px;
  overflow: hidden; transition: all .3s; text-align: left;
}
.scene-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.scene-card .scene-img {
  display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover;
  background: linear-gradient(180deg, #e8f3fc, #f5f9fe);
}
.scene-card .scene-body { padding: 18px 20px 22px; }
.scene-card h3 { font-size: 17px; margin-bottom: 6px; }
.scene-card p { font-size: 13.5px; color: var(--muted); line-height: 1.7; }
@media (max-width: 1024px) { .scene-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .scene-grid { grid-template-columns: 1fr; } }

/* 麦田背景 CTA */
.cta-band--bg {
  background:
    linear-gradient(180deg, rgba(14,42,77,.88), rgba(16,96,176,.82)),
    url('../images/scenes/scene-farmland.svg') center / cover no-repeat;
}
.cta-band--bg::before { background: radial-gradient(40% 80% at 50% 0%, rgba(233,180,76,.18), transparent 60%); }
.cta-band--bg > * { position: relative; z-index: 2; }

/* 新闻缩略图 */
.news-card .thumb {
  display: block; width: 100%; height: 150px; object-fit: cover;
  background: linear-gradient(180deg, #e8f3fc, #f5f9fe);
}

/* 新闻知识库分类导航 */
.cat-nav {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin: 26px 0 8px;
}
.cat-nav a {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 16px 10px; background: var(--bg2); border: 1px solid var(--rule);
  border-radius: 12px; text-align: center; font-weight: 600; font-size: 14px;
  color: var(--ink); transition: all .25s;
}
.cat-nav a:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(16,96,176,.10); }
.cat-nav img { width: 44px; height: 44px; object-fit: contain; }
.cat-title {
  font-size: 19px; margin: 40px 0 18px; padding-left: 12px;
  border-left: 4px solid var(--accent); line-height: 1.4;
}
@media (max-width: 640px) {
  .cat-nav { grid-template-columns: repeat(2, 1fr); }
}

/* =========================================================
   文章页（article）
   ========================================================= */
.container--narrow { max-width: 820px; }
.article-section { padding-top: 44px; padding-bottom: 72px; }
.article-head { margin-bottom: 26px; }
.article-head .badge {
  display: inline-block; margin: 16px 0 10px; padding: 4px 14px;
  background: rgba(16,96,176,.08); color: var(--accent);
  font-size: 13px; font-weight: 600; border-radius: 999px;
}
.article-head h1 { font-size: 30px; line-height: 1.35; margin-bottom: 14px; }
.art-meta {
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
  font-size: 13px; color: var(--muted); padding-top: 12px; border-top: 1px solid var(--rule);
}
.art-meta .date b { color: var(--accent); font-size: 15px; margin-right: 4px; }
.article-hero {
  width: 100%; max-height: 360px; object-fit: cover; border-radius: 14px;
  margin-bottom: 30px; background: linear-gradient(180deg,#e8f3fc,#f5f9fe);
}
.article-body { font-size: 16px; line-height: 1.9; color: var(--ink); }
.article-body h2 {
  font-size: 21px; margin: 34px 0 14px; padding-left: 12px;
  border-left: 4px solid var(--accent); line-height: 1.4;
}
.article-body p { margin-bottom: 16px; text-align: justify; }
.article-cta {
  margin-top: 44px; padding: 30px 32px; text-align: center;
  background: linear-gradient(180deg, rgba(14,42,77,.92), rgba(16,96,176,.86));
  border-radius: 14px; color: #fff;
}
.article-cta h3 { color: #fff; font-size: 20px; margin-bottom: 8px; }
.article-cta p { color: rgba(255,255,255,.82); font-size: 14px; margin-bottom: 18px; }
.article-nav { margin-top: 28px; text-align: center; }
@media (max-width: 640px) {
  .article-head h1 { font-size: 24px; }
  .article-body { font-size: 15px; }
  .article-cta { padding: 24px 20px; }
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer { background: var(--dark); color: rgba(255,255,255,.78); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr .9fr; gap: 40px; padding-bottom: 40px; }
.footer-grid h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 18px; }
.footer-grid p { font-size: 14px; margin-bottom: 12px; }
.footer-grid li { margin-bottom: 10px; }
.footer-grid a { color: rgba(255,255,255,.7); font-size: 14px; }
.footer-grid a:hover { color: var(--gold); }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo .logo-mark { background: linear-gradient(135deg, var(--gold), var(--gold-dark)); color: #3a2a00; }
.footer-qr .qr-row { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-qr .qr-item { text-align: center; }
.footer-qr .qr-item img { width: 96px; height: 96px; border-radius: 10px; display: block; background: #fff; padding: 6px; object-fit: contain; }
.footer-qr .qr-item span { display: block; margin-top: 6px; font-size: 12px; color: rgba(255,255,255,.65); }
.footer-logo b { color: #fff; font-size: 17px; }
.contact-list li { display: flex; gap: 10px; align-items: flex-start; }
.contact-list .ico { color: var(--gold); flex-shrink: 0; margin-top: 3px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12); padding: 18px 0; font-size: 13px;
  color: rgba(255,255,255,.5);
}
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.footer-bottom a { color: rgba(255,255,255,.6); }
.footer-bottom a:hover { color: var(--gold); }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }

/* =========================================================
   联系/表单
   ========================================================= */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.info-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 30px; margin-bottom: 18px;
}
.info-card h3 { font-size: 17px; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.info-card h3 .ico { color: var(--accent); }
.info-card li { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--rule); font-size: 14px; }
.info-card li:last-child { border-bottom: 0; }
.info-card li .k { color: var(--muted); min-width: 72px; flex-shrink: 0; }
.info-card li .v { color: var(--ink); word-break: break-all; }
.info-card li .v a { color: var(--accent); }

.form-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 34px; box-shadow: var(--shadow);
}
.form-card h3 { font-size: 20px; margin-bottom: 6px; }
.form-card .tip { font-size: 13px; color: var(--muted); margin-bottom: 22px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; }
.form-group label .req { color: var(--danger); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; border: 1px solid var(--rule); border-radius: 8px;
  padding: 11px 14px; background: var(--bg); outline: none; transition: border-color .2s, box-shadow .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(16, 96, 176,.12); background: var(--bg2);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-tip-note { font-size: 12px; color: var(--muted); margin-top: 8px; }
.form-success {
  display: none; background: rgba(16, 96, 176,.08); border: 1px solid rgba(16, 96, 176,.3);
  color: var(--accent-dark); padding: 14px 18px; border-radius: 10px; margin-bottom: 18px; font-size: 14px;
}
.form-success.show { display: block; }
.form-error {
  display: none; background: rgba(200, 40, 40,.08); border: 1px solid rgba(200, 40, 40,.35);
  color: #a03030; padding: 14px 18px; border-radius: 10px; margin-bottom: 18px; font-size: 14px;
}
.form-error.show { display: block; }
@media (max-width: 900px) { .contact-wrap { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }

/* ---------- 地图占位 ---------- */
.map-placeholder {
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--rule);
  background:
    linear-gradient(120deg, rgba(255,255,255,.65), rgba(255,255,255,0) 45%),
    linear-gradient(150deg, #e6eef8, #dbe7f3);
  min-height: 240px;
  display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 14px;
  text-align: center; padding: 24px; position: relative;
}
.map-placeholder::before {
  content: ""; position: absolute; width: 48px; height: 48px; border-radius: 50%;
  background: rgba(233,180,76,.35); top: 50%; left: 50%; transform: translate(-50%, -50%);
  box-shadow: 0 0 0 14px rgba(233,180,76,.15), 0 0 0 28px rgba(233,180,76,.08);
}

/* =========================================================
   产品详情页
   ========================================================= */
.detail-wrap { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: start; }
.detail-gallery {
  border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(160deg, #e8f0fa, #dfeaf6);
  aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--rule);
}
.detail-gallery svg { width: 55%; height: 55%; }
.detail-gallery img { width: 100%; height: 100%; object-fit: contain; background: #fff; display: block; padding: 10px; }
.detail-info h1 { font-size: 30px; line-height: 1.35; margin-bottom: 12px; }
.detail-info .lead { color: var(--muted); margin-bottom: 18px; }
.detail-spec { width: 100%; border-collapse: collapse; margin: 20px 0; }
.detail-spec th, .detail-spec td { border: 1px solid var(--rule); padding: 11px 14px; font-size: 14px; text-align: left; }
.detail-spec th { background: rgba(16, 96, 176,.06); font-weight: 600; width: 34%; white-space: nowrap; }
.table-wrap { overflow-x: auto; overflow-y: auto; max-height: 600px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.spec-table th, .spec-table td { border: 1px solid var(--rule); padding: 12px 14px; font-size: 14px; text-align: left; }
.spec-table th { background: var(--accent); color: #fff; font-weight: 600; white-space: nowrap; }
.spec-table tr:nth-child(even) td { background: rgba(16, 96, 176,.03); }
@media (max-width: 900px) { .detail-wrap { grid-template-columns: 1fr; } }

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: 13px; color: var(--muted); padding: 18px 0; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 8px; color: #b8c4d4; }

/* ---------- 特色列表 ---------- */
.check-list li { display: flex; gap: 12px; padding: 8px 0; font-size: 15px; align-items: flex-start; }
.check-list .tick {
  width: 22px; height: 22px; border-radius: 50%; flex-shrink: 0; margin-top: 2px;
  background: rgba(16, 96, 176,.12); color: var(--accent);
  display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700;
}

/* ---------- 步骤/流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 28px 24px; position: relative; transition: all .3s;
}
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.step-card .n {
  font-family: var(--font-num); font-size: 40px; font-weight: 700;
  color: rgba(16, 96, 176,.18); line-height: 1;
}
.step-card h3 { font-size: 17px; margin: 12px 0 8px; }
.step-card p { font-size: 14px; color: var(--muted); }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* ---------- 团队/价值观 ---------- */
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 30px 26px; text-align: center; transition: all .3s;
}
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.value-card .ico {
  width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%;
  background: linear-gradient(135deg, rgba(16, 96, 176,.12), rgba(233,180,76,.18));
  display: flex; align-items: center; justify-content: center; color: var(--accent);
}
.value-card h3 { font-size: 17px; margin-bottom: 10px; }
.value-card p { font-size: 14px; color: var(--muted); }
@media (max-width: 900px) { .values-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .values-grid { grid-template-columns: 1fr; } }

/* ---------- 发展历程 ---------- */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 30px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 4px; bottom: 4px; width: 2px;
  background: linear-gradient(var(--accent), rgba(16, 96, 176,.1));
}
.timeline li { position: relative; padding: 0 0 34px 22px; }
.timeline li::before {
  content: ""; position: absolute; left: -30px; top: 6px; width: 18px; height: 18px;
  border-radius: 50%; background: var(--bg2); border: 4px solid var(--accent);
}
.timeline .year { font-family: var(--font-num); font-weight: 700; color: var(--accent); font-size: 18px; }
.timeline h3 { font-size: 16px; margin: 4px 0 6px; }
.timeline p { font-size: 14px; color: var(--muted); }

/* ---------- CTA 区块 ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--accent-dark), var(--accent));
  color: #fff; text-align: center; padding: 56px 24px; border-radius: 18px;
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(40% 80% at 50% 0%, rgba(233,180,76,.2), transparent 60%);
}
.cta-band h2 { font-size: 28px; margin-bottom: 10px; position: relative; }
.cta-band p { color: rgba(255,255,255,.85); margin-bottom: 26px; position: relative; }
.cta-band .btn { position: relative; }

/* ---------- 内容排版（富文本） ---------- */
.prose h2 { font-size: 24px; margin: 40px 0 16px; }
.prose h3 { font-size: 19px; margin: 28px 0 12px; }
.prose p { margin-bottom: 16px; color: var(--muted); }
.prose ul { margin: 0 0 16px; padding-left: 6px; }
.prose ul li { padding: 6px 0 6px 26px; position: relative; color: var(--muted); }
.prose ul li::before {
  content: ""; position: absolute; left: 4px; top: 15px; width: 8px; height: 8px;
  border-radius: 2px; background: var(--accent);
}
.prose .panel {
  background: var(--bg2); border: 1px solid var(--rule); border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm); padding: 18px 22px; margin: 20px 0; font-size: 15px; color: var(--muted);
}
.prose .panel b { color: var(--ink); }

/* ---------- 404 ---------- */
.error-page { text-align: center; padding: 120px 24px; }
.error-page .code { font-family: var(--font-num); font-size: 120px; font-weight: 700; line-height: 1; background: linear-gradient(135deg, var(--accent), var(--gold)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.error-page h1 { font-size: 26px; margin: 18px 0 10px; }
.error-page p { color: var(--muted); margin-bottom: 28px; }

/* ---------- 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* =========================================================
   物联网云平台页
   ========================================================= */
.arch-stack { max-width: 860px; margin: 0 auto; }
.arch-layer {
  display: flex; align-items: center; gap: 18px;
  background: var(--bg2); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: 18px 24px; margin-bottom: 12px;
  position: relative; transition: transform .3s, box-shadow .3s;
}
.arch-layer:hover { transform: translateX(6px); box-shadow: var(--shadow); }
.arch-layer .layer-badge {
  flex-shrink: 0; width: 66px; height: 66px; border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff; display: flex; align-items: center; justify-content: center;
}
.arch-layer:nth-child(even) .layer-badge { background: linear-gradient(135deg, var(--gold-dark), var(--gold)); color: #3a2a00; }
.arch-layer h3 { font-size: 16px; margin-bottom: 4px; }
.arch-layer p { font-size: 13px; color: var(--muted); }
.arch-arrow { text-align: center; color: var(--accent); font-size: 18px; margin: -2px 0 2px; position: relative; z-index: 2; }

.iot-modules { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.iot-module {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: 24px; transition: all .3s;
}
.iot-module:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.iot-module .ico {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 14px;
  background: linear-gradient(135deg, rgba(16, 96, 176,.12), rgba(233,180,76,.16));
  display: flex; align-items: center; justify-content: center; color: var(--accent);
}
.iot-module h3 { font-size: 16px; margin-bottom: 8px; }
.iot-module p { font-size: 13px; color: var(--muted); }
@media (max-width: 900px) { .iot-modules { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .iot-modules { grid-template-columns: 1fr; } }

.roadmap { max-width: 860px; margin: 0 auto; }
.roadmap li {
  background: var(--bg2); border: 1px solid var(--rule); border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm); padding: 20px 24px; margin-bottom: 14px;
  display: flex; gap: 20px; align-items: flex-start;
}
.roadmap .phase { flex-shrink: 0; text-align: center; min-width: 88px; }
.roadmap .phase b { display: block; font-family: var(--font-num); font-size: 16px; color: var(--accent); }
.roadmap .phase span {
  display: inline-block; font-size: 12px; background: rgba(233,180,76,.2);
  color: var(--gold-dark); border-radius: 50px; padding: 2px 10px; margin-top: 6px;
}
.roadmap .phase span.done { background: rgba(16, 96, 176,.12); color: var(--accent); }
.roadmap h3 { font-size: 15px; margin-bottom: 4px; }
.roadmap p { font-size: 13px; color: var(--muted); }
@media (max-width: 560px) { .roadmap li { flex-direction: column; gap: 8px; } }

.reserve-box {
  background: var(--bg2); border: 1px solid var(--rule); border-radius: var(--radius);
  overflow: hidden; max-width: 860px; margin: 0 auto;
}
.reserve-box .row {
  display: flex; align-items: flex-start; gap: 16px; padding: 18px 24px;
  border-bottom: 1px dashed var(--rule); font-size: 14px;
}
.reserve-box .row:last-child { border-bottom: 0; }
.reserve-box .k { flex-shrink: 0; width: 96px; color: var(--accent); font-weight: 600; }
.reserve-box .v { color: var(--muted); word-break: break-all; }
.reserve-box code {
  font-family: Consolas, "Courier New", monospace; font-size: 13px;
  background: rgba(16, 96, 176,.08); color: var(--accent-dark);
  padding: 2px 8px; border-radius: 4px; word-break: break-all;
}

/* ---------- 响应式微调 ---------- */
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .container { padding: 0 18px; }
}