/* ============================================================
   达沃电子 DAVO — 品牌设计系统
   主色：DAVO 绿 #C5DD47（取自官网 VI）
   辅色：深海军蓝 #1A2A4A（取自官网头部）
   点缀：警示红 #E62129（仅热线/重要提示少量使用）
   ============================================================ */

:root {
  --davo-green: #C5DD47;
  --davo-green-dark: #A8C22E;
  --davo-green-deep: #8FA91F;
  --davo-green-soft: #F3F8DF;
  --davo-navy: #1A2A4A;
  --davo-navy-2: #13203A;
  --davo-navy-3: #0E1830;
  --davo-red: #E62129;
  --ink: #2B3245;
  --gray: #6B7280;
  --gray-light: #9AA1AF;
  --line: #E5E8EF;
  --bg: #F5F7FA;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 8px rgba(26, 42, 74, .06);
  --shadow-md: 0 8px 24px rgba(26, 42, 74, .10);
  --shadow-lg: 0 16px 48px rgba(26, 42, 74, .14);
  --radius: 10px;
  --radius-lg: 16px;
  --header-h: 72px;
  --font: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 通用版块 ---------- */
.section { padding: 80px 0; }
.section--gray { background: var(--bg); }
.section--navy { background: var(--davo-navy); color: #DCE3F0; }

.section-head { text-align: center; margin-bottom: 48px; }
.section-head .kicker {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--davo-green-deep);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: 34px;
  color: var(--davo-navy);
  font-weight: 800;
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}
.section-head h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 56px;
  height: 4px;
  border-radius: 2px;
  background: var(--davo-green);
}
.section-head p { color: var(--gray); margin-top: 14px; max-width: 640px; margin-left: auto; margin-right: auto; }
.section--navy .section-head h2 { color: var(--white); }
.section--navy .section-head p { color: #AAB6CC; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .25s ease;
}
.btn--primary {
  background: var(--davo-green);
  color: var(--davo-navy);
}
.btn--primary:hover { background: var(--davo-green-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(197, 221, 71, .4); }
.btn--ghost {
  border-color: rgba(255, 255, 255, .5);
  color: var(--white);
  background: transparent;
}
.btn--ghost:hover { border-color: var(--davo-green); color: var(--davo-green); }
.btn--navy { background: var(--davo-navy); color: var(--white); }
.btn--navy:hover { background: var(--davo-navy-2); transform: translateY(-2px); }

/* ---------- 顶部工具条 + 导航 ---------- */
.topbar {
  background: var(--davo-navy-3);
  color: #8FA0BE;
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 38px;
}
.topbar a:hover { color: var(--davo-green); }
.topbar .topbar-right { display: flex; gap: 22px; align-items: center; }
.topbar .hotline { color: var(--davo-green); font-weight: 700; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--davo-navy);
  box-shadow: 0 2px 12px rgba(14, 24, 48, .35);
}
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 40px; width: auto; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav > a {
  position: relative;
  color: #D6DEEC;
  font-size: 16px;
  font-weight: 600;
  padding: 24px 18px;
  transition: color .2s;
}
.nav > a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 16px;
  height: 3px;
  border-radius: 2px;
  background: var(--davo-green);
  transform: scaleX(0);
  transition: transform .25s ease;
}
.nav > a:hover, .nav > a.active { color: var(--white); }
.nav > a:hover::after, .nav > a.active::after { transform: scaleX(1); }
.nav > a.nav-cta {
  background: var(--davo-green);
  color: var(--davo-navy);
  border-radius: 6px;
  padding: 10px 20px;
  margin-left: 12px;
  font-weight: 700;
}
.nav > a.nav-cta::after { display: none; }
.nav > a.nav-cta:hover { background: var(--davo-green-dark); color: var(--davo-navy); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all .3s;
}
.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 轮播 ---------- */
.hero {
  position: relative;
  height: min(560px, 72vw);
  min-height: 380px;
  overflow: hidden;
  background: var(--davo-navy-2);
}
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity .8s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(14, 24, 48, .82) 0%, rgba(14, 24, 48, .45) 55%, rgba(14, 24, 48, .15) 100%);
}
.hero-caption {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
}
.hero-caption .inner { max-width: 640px; color: var(--white); }
.hero-caption .tag {
  display: inline-block;
  background: var(--davo-green);
  color: var(--davo-navy);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 2px;
  padding: 6px 14px;
  border-radius: 4px;
  margin-bottom: 18px;
}
.hero-caption h1 {
  font-size: clamp(28px, 4.5vw, 48px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}
.hero-caption p { font-size: clamp(15px, 1.6vw, 18px); color: #C9D4E8; margin-bottom: 30px; }
.hero-caption .actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-dots {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 5;
}
.hero-dots button {
  width: 34px;
  height: 4px;
  border: none;
  border-radius: 2px;
  background: rgba(255, 255, 255, .35);
  cursor: pointer;
  transition: background .25s;
}
.hero-dots button.active { background: var(--davo-green); }

/* ---------- 数据统计条 ---------- */
.stats {
  background: var(--davo-navy);
  position: relative;
  z-index: 2;
}
.stats .grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  text-align: center;
  padding: 34px 12px;
  border-left: 1px solid rgba(255, 255, 255, .08);
}
.stat:first-child { border-left: none; }
.stat .num {
  font-size: 38px;
  font-weight: 800;
  color: var(--davo-green);
  line-height: 1.1;
}
.stat .num small { font-size: 20px; }
.stat .label { color: #AAB6CC; font-size: 14px; margin-top: 6px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 26px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--line);
  transition: transform .3s ease, box-shadow .3s ease;
  display: flex;
  flex-direction: column;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.card .thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg);
}
.card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.card:hover .thumb img { transform: scale(1.06); }
.card .body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.card .cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--davo-green-deep);
  background: var(--davo-green-soft);
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
  align-self: flex-start;
}
.card h3 { font-size: 18px; color: var(--davo-navy); margin-bottom: 8px; font-weight: 700; }
.card .model { color: var(--gray-light); font-size: 13px; letter-spacing: 1px; margin-bottom: 8px; font-weight: 600; }
.card p { color: var(--gray); font-size: 14px; flex: 1; }
.card .more {
  margin-top: 14px;
  color: var(--davo-navy);
  font-weight: 700;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card .more i { font-style: normal; transition: transform .25s; color: var(--davo-green-deep); }
.card:hover .more i { transform: translateX(4px); }

/* 解决方案卡（图文横向感） */
.sol-card .thumb { aspect-ratio: 16 / 10; }
.sol-card ul.points { margin-top: 12px; }
.sol-card ul.points li {
  position: relative;
  padding-left: 18px;
  color: var(--gray);
  font-size: 14px;
  margin-bottom: 6px;
}
.sol-card ul.points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--davo-green);
}

/* ---------- 定制能力 ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cap {
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all .3s;
}
.cap:hover { border-color: var(--davo-green); background: rgba(197, 221, 71, .06); transform: translateY(-4px); }
.cap .icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--davo-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.cap .icon svg { width: 26px; height: 26px; stroke: var(--davo-navy); }
.cap h3 { color: var(--white); font-size: 17px; margin-bottom: 10px; }
.cap p { color: #AAB6CC; font-size: 14px; }

/* ---------- CTA ---------- */
.cta {
  position: relative;
  background: var(--davo-navy-2) url("../img/scene-ship.jpg") center/cover no-repeat;
  color: var(--white);
  text-align: center;
  padding: 90px 0;
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(14, 24, 48, .92), rgba(26, 42, 74, .78));
}
.cta .container { position: relative; z-index: 1; }
.cta h2 { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 14px; font-weight: 800; }
.cta p { color: #C9D4E8; margin-bottom: 32px; font-size: 17px; }
.cta .cta-phone {
  display: block;
  margin-top: 22px;
  font-size: 15px;
  color: #C9D4E8;
}
.cta .cta-phone strong { color: var(--davo-green); font-size: 24px; letter-spacing: 1px; }

/* ---------- 新闻 ---------- */
.news-card .thumb { aspect-ratio: 16 / 10; }
.news-card .date { color: var(--gray-light); font-size: 13px; margin-bottom: 8px; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--davo-navy-3);
  color: #8FA0BE;
  padding: 64px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 44px;
}
.site-footer h4 {
  color: var(--white);
  font-size: 16px;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.site-footer h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 3px;
  background: var(--davo-green);
  border-radius: 2px;
}
.site-footer ul li { margin-bottom: 10px; }
.site-footer a:hover { color: var(--davo-green); }
.footer-brand img { height: 38px; margin-bottom: 16px; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; align-items: flex-start; }
.footer-contact .k { color: var(--davo-green); flex-shrink: 0; font-weight: 700; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: #5F7092;
}
.footer-bottom a { color: #5F7092; }
.footer-bottom a:hover { color: var(--davo-green); }

/* ---------- 内页横幅 ---------- */
.page-banner {
  position: relative;
  height: 260px;
  background: var(--davo-navy-2) url("../img/page-banner.jpg") center/cover no-repeat;
  display: flex;
  align-items: center;
  color: var(--white);
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(14, 24, 48, .88), rgba(26, 42, 74, .55));
}
.page-banner .container { position: relative; z-index: 1; }
.page-banner h1 { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; margin-bottom: 8px; }
.breadcrumb { font-size: 14px; color: #AAB6CC; }
.breadcrumb a:hover { color: var(--davo-green); }
.breadcrumb span { margin: 0 8px; color: var(--davo-green); }

/* ---------- 产品中心 ---------- */
.products-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 36px;
  align-items: start;
}
.side-nav {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  position: sticky;
  top: calc(var(--header-h) + 58px);
}
.side-nav .side-title {
  background: var(--davo-navy);
  color: var(--white);
  font-weight: 700;
  padding: 16px 20px;
  font-size: 16px;
}
.side-nav a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 15px;
  transition: all .2s;
}
.side-nav a:last-child { border-bottom: none; }
.side-nav a:hover, .side-nav a.active {
  background: var(--davo-green-soft);
  color: var(--davo-navy);
  font-weight: 700;
  padding-left: 26px;
  border-left: 4px solid var(--davo-green);
}
.side-cta {
  margin-top: 24px;
  background: var(--davo-navy);
  border-radius: var(--radius);
  padding: 26px 22px;
  color: var(--white);
  text-align: center;
}
.side-cta h4 { margin-bottom: 8px; font-size: 17px; }
.side-cta p { color: #AAB6CC; font-size: 13px; margin-bottom: 14px; }
.side-cta .phone { color: var(--davo-green); font-size: 20px; font-weight: 800; }

/* ---------- 产品详情 ---------- */
.pd-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.pd-gallery {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg);
}
.pd-gallery img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.pd-info .cat { display: inline-block; font-size: 13px; font-weight: 700; color: var(--davo-green-deep); background: var(--davo-green-soft); padding: 4px 12px; border-radius: 4px; margin-bottom: 14px; }
.pd-info h1, .pd-info h2.pd-name { font-size: 30px; color: var(--davo-navy); margin-bottom: 6px; }
.pd-info .model { color: var(--gray-light); letter-spacing: 2px; font-weight: 700; margin-bottom: 18px; }
.pd-info .summary { color: var(--gray); padding-bottom: 22px; border-bottom: 1px solid var(--line); margin-bottom: 22px; }
.spec-table { width: 100%; border-collapse: collapse; margin-bottom: 26px; }
.spec-table th, .spec-table td {
  text-align: left;
  padding: 12px 14px;
  border: 1px solid var(--line);
  font-size: 14px;
}
.spec-table th { background: var(--bg); color: var(--davo-navy); width: 32%; font-weight: 700; }
.pd-desc { margin-top: 56px; }
.pd-desc h2 { font-size: 22px; color: var(--davo-navy); margin-bottom: 16px; padding-left: 14px; border-left: 4px solid var(--davo-green); }
.pd-desc p { color: var(--gray); }

/* ---------- 解决方案详情块 ---------- */
.sol-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 72px;
}
.sol-block:last-child { margin-bottom: 0; }
.sol-block:nth-child(even) .sol-img { order: 2; }
.sol-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.sol-img img { width: 100%; aspect-ratio: 16/11; object-fit: cover; }
.sol-body .idx {
  font-size: 46px;
  font-weight: 800;
  color: var(--davo-green);
  line-height: 1;
  margin-bottom: 10px;
}
.sol-body h2 { font-size: 26px; color: var(--davo-navy); margin-bottom: 14px; }
.sol-body p { color: var(--gray); margin-bottom: 18px; }
.sol-body ul.points li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 15px;
}
.sol-body ul.points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--davo-green);
}

/* ---------- 资讯 ---------- */
.news-layout { display: grid; grid-template-columns: 1fr; gap: 0; }
.news-item {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.news-item .thumb { border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/10; }
.news-item .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.news-item:hover .thumb img { transform: scale(1.05); }
.news-item .date { color: var(--gray-light); font-size: 13px; margin-bottom: 8px; }
.news-item h3 { font-size: 20px; color: var(--davo-navy); margin-bottom: 10px; transition: color .2s; }
.news-item:hover h3 { color: var(--davo-green-deep); }
.news-item p { color: var(--gray); font-size: 14px; }

.article-body { max-width: 860px; margin: 0 auto; }
.article-body h1, .article-body h2.article-ssr-title { font-size: 30px; color: var(--davo-navy); line-height: 1.4; margin-bottom: 14px; }

/* 常见问题 FAQ */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 14px; overflow: hidden; }
.faq-item summary {
  cursor: pointer; padding: 18px 22px; font-weight: 700; color: var(--davo-navy); font-size: 16px;
  list-style: none; position: relative;
}
.faq-item summary::after {
  content: '+'; position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  color: var(--davo-green-deep); font-size: 22px; font-weight: 700; transition: transform .2s;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item .faq-a { padding: 0 22px 20px; color: var(--ink); line-height: 1.9; border-top: 1px dashed var(--line); padding-top: 16px; }
.article-meta { color: var(--gray-light); font-size: 14px; padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 28px; }
.article-meta span { margin-right: 20px; }
.article-body .cover { border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 28px; }
.article-body .content { color: var(--ink); font-size: 16px; }
.article-body .content p { margin-bottom: 16px; }

/* ---------- 关于达沃 ---------- */
.about-intro { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.about-intro h2 { font-size: 28px; color: var(--davo-navy); margin-bottom: 18px; }
.about-intro p { color: var(--gray); margin-bottom: 14px; }
.about-intro .about-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.honor-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.honor {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 4px solid var(--davo-green);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  font-weight: 700;
  color: var(--davo-navy);
  box-shadow: var(--shadow-sm);
}

/* ---------- 联系我们 ---------- */
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.contact-info .item { display: flex; gap: 16px; margin-bottom: 26px; align-items: flex-start; }
.contact-info .ic {
  width: 48px; height: 48px; flex-shrink: 0;
  border-radius: 12px;
  background: var(--davo-green-soft);
  display: flex; align-items: center; justify-content: center;
}
.contact-info .ic svg { width: 22px; height: 22px; stroke: var(--davo-green-deep); }
.contact-info h3 { color: var(--davo-navy); font-size: 16px; margin-bottom: 4px; }
.contact-info p { color: var(--gray); font-size: 15px; }
.contact-form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
}
.contact-form h2 { color: var(--davo-navy); font-size: 22px; 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: 700; color: var(--davo-navy); margin-bottom: 6px; }
.form-group label em { color: var(--davo-red); font-style: normal; }
.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
  font-family: var(--font);
  transition: border-color .2s, box-shadow .2s;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--davo-green);
  box-shadow: 0 0 0 3px rgba(197, 221, 71, .25);
}
.form-msg { margin-top: 12px; font-size: 14px; font-weight: 700; }
.form-msg.ok { color: var(--davo-green-deep); }
.form-msg.err { color: var(--davo-red); }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
  .grid--4, .cap-grid, .honor-list { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .stats .grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: none; }
  .products-layout { grid-template-columns: 1fr; }
  .side-nav { position: static; }
  .side-cta { display: none; }
  .pd-layout, .sol-block, .about-intro, .contact-layout { grid-template-columns: 1fr; }
  .sol-block:nth-child(even) .sol-img { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .topbar .topbar-left { display: none; }
  .topbar .container { justify-content: center; }
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    top: calc(var(--header-h) + 38px);
    left: 0;
    right: 0;
    background: var(--davo-navy-2);
    flex-direction: column;
    align-items: stretch;
    padding: 10px 0;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all .3s ease;
    box-shadow: var(--shadow-lg);
    max-height: calc(100dvh - var(--header-h) - 38px);
    overflow-y: auto;
  }
  .nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav > a { padding: 14px 24px; border-bottom: 1px solid rgba(255,255,255,.06); }
  .nav > a::after { display: none; }
  .nav > a.nav-cta { margin: 12px 24px; text-align: center; }
  .hero { height: 420px; }
  .news-item { grid-template-columns: 1fr; gap: 16px; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .grid--3, .grid--4, .grid--2, .cap-grid, .honor-list, .footer-grid { grid-template-columns: 1fr; }
  .stats .grid { grid-template-columns: repeat(2, 1fr); }
  .stat .num { font-size: 30px; }
  .contact-form { padding: 24px; }
}