/* ============================================================
   嘉兴凌龙科技实业有限公司 - 企业官网样式
   设计语言：蓝白 · 简约大气 · 思源黑体 · 响应式
   ============================================================ */

:root {
  --blue: #0E5FA8;          /* 主蓝 */
  --blue-deep: #0A3D6E;     /* 深蓝 */
  --blue-light: #16A0DC;    /* 亮蓝点缀 */
  --blue-bg: #F3F8FD;       /* 浅蓝背景 */
  --blue-line: #DCE9F5;     /* 分隔线 */
  --text: #2B3440;          /* 正文 */
  --text-sub: #6B7684;      /* 次级文字 */
  --white: #FFFFFF;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(10, 61, 110, .08);
  --shadow-hover: 0 16px 40px rgba(10, 61, 110, .16);
  --container: 1200px;
  --font: "Noto Sans SC", "Source Han Sans SC", "思源黑体", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s; }
ul { list-style: none; }

.container {
  width: 92%;
  max-width: var(--container);
  margin: 0 auto;
}

/* ---------------- 顶部信息条 ---------------- */
.topbar {
  background: var(--blue-deep);
  color: rgba(255, 255, 255, .85);
  font-size: 13px;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
}
.topbar span { margin-right: 22px; }
.topbar a:hover { color: var(--white); }

/* ---------------- 头部导航 ---------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--blue-line);
}
.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 76px;
}
.logo { display: flex; align-items: center; }
.logo .logo-name {
  font-size: 27px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 2px;
  white-space: nowrap;
}

.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  display: block;
  padding: 8px 20px;
  font-size: 18px;
  color: var(--text);
  position: relative;
  font-weight: 500;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 3px;
  border-radius: 2px;
  background: var(--blue);
  transform: translateX(-50%);
  transition: width .3s;
}
.nav a:hover, .nav a.active { color: var(--blue); }
.nav a:hover::after, .nav a.active::after { width: 60%; }

/* 移动端菜单（纯 CSS checkbox 方案） */
.nav-toggle { display: none; }
.nav-btn {
  display: none;
  width: 42px;
  height: 42px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 8px;
}
.nav-btn i {
  display: block;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transition: .3s;
}

/* ---------------- 首页轮播（纯 CSS） ---------------- */
.hero {
  position: relative;
  height: 78vh;
  min-height: 540px;
  max-height: 860px;
  overflow: hidden;
  background: var(--blue-deep);
}
.hero .slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.hero .slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,61,110,.55) 0%, rgba(10,61,110,.25) 45%, rgba(10,61,110,.65) 100%);
}
.hero-caption {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: var(--white);
  padding: 0 6%;
}
.hero-caption .en {
  font-size: 14px;
  letter-spacing: 6px;
  text-transform: uppercase;
  opacity: .8;
  margin-bottom: 18px;
}
.hero-caption h1 {
  font-size: 46px;
  font-weight: 700;
  letter-spacing: 4px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, .35);
}
.hero-caption p {
  margin-top: 20px;
  font-size: 18px;
  letter-spacing: 2px;
  opacity: .92;
}
.hero-caption .btn {
  margin-top: 38px;
}
/* Banner 文字入场动画 */
@keyframes bannerRise {
  from { opacity: 0; transform: translateY(34px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes bannerFade {
  from { opacity: 0; letter-spacing: 10px; }
  to   { opacity: .8; letter-spacing: 6px; }
}
.hero-caption .en {
  animation: bannerFade .9s ease-out both;
}
.hero-caption h1 {
  animation: bannerRise .9s ease-out .15s both;
}
.hero-caption p {
  animation: bannerRise .9s ease-out .35s both;
}
.hero-caption .btn {
  animation: bannerRise .9s ease-out .55s both;
}

/* ---------------- 通用按钮 ---------------- */
.btn {
  display: inline-block;
  padding: 13px 42px;
  border-radius: 40px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 2px;
  transition: all .3s;
  border: 1px solid transparent;
}
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-deep); box-shadow: 0 8px 24px rgba(14,95,168,.35); }
.btn-ghost { border-color: rgba(255,255,255,.8); color: var(--white); }
.btn-ghost:hover { background: var(--white); color: var(--blue); }

/* ---------------- 内页 Banner ---------------- */
.page-banner {
  position: relative;
  height: 380px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,61,110,.62), rgba(14,95,168,.45));
}
.page-banner .inner {
  position: relative;
  z-index: 2;
  color: var(--white);
  padding: 0 6%;
}
.page-banner h1 {
  font-size: 38px;
  font-weight: 700;
  letter-spacing: 4px;
  text-shadow: 0 4px 16px rgba(0,0,0,.3);
  animation: bannerRise .9s ease-out both;
}
.page-banner .en {
  margin-top: 14px;
  font-size: 13px;
  letter-spacing: 5px;
  text-transform: uppercase;
  opacity: .85;
  animation: bannerRise .9s ease-out .3s both;
}
.crumb {
  background: var(--blue-bg);
  border-bottom: 1px solid var(--blue-line);
  font-size: 14px;
  color: var(--text-sub);
}
.crumb .container { height: 48px; display: flex; align-items: center; gap: 8px; }
.crumb a:hover { color: var(--blue); }
.crumb .cur { color: var(--blue); font-weight: 500; }

/* ---------------- 区块标题 ---------------- */
.section { padding: 90px 0; }
.section.alt { background: var(--blue-bg); }
.sec-head { text-align: center; margin-bottom: 56px; }
.sec-head .en {
  font-size: 13px;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--blue-light);
  font-weight: 600;
}
.sec-head h2 {
  margin-top: 10px;
  font-size: 34px;
  color: var(--text);
  letter-spacing: 3px;
}
.sec-head .line {
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--blue-light));
  border-radius: 3px;
  margin: 20px auto 0;
}
.sec-head p { margin-top: 18px; color: var(--text-sub); }

/* ---------------- 首页·关于 ---------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-img { position: relative; }
.about-img img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  height: 420px;
  object-fit: cover;
}
.about-img::before {
  content: "";
  position: absolute;
  top: -18px;
  left: -18px;
  width: 120px;
  height: 120px;
  border-top: 4px solid var(--blue-light);
  border-left: 4px solid var(--blue-light);
  border-radius: 6px 0 0 0;
  z-index: -1;
}
.about-txt h3 { font-size: 28px; letter-spacing: 2px; margin-bottom: 22px; }
.about-txt h3 b { color: var(--blue); }
.about-txt p { color: var(--text-sub); margin-bottom: 16px; text-align: justify; }
.about-txt .btn { margin-top: 14px; }

/* ---------------- 数字统计带 ---------------- */
.stats {
  background:
    linear-gradient(135deg, rgba(10,61,110,.94), rgba(14,95,168,.9)),
    url("../assets/factory.jpg") center/cover fixed;
  color: var(--white);
  padding: 70px 0;
}
.stats .grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}
.stats .num { font-size: 44px; font-weight: 700; font-family: var(--font); }
.stats .num span { font-size: 20px; font-weight: 500; margin-left: 4px; }

/* 数字滚动（由 js/count.js 驱动，2 秒计数到 data-target） */
.stats .num .count {
  font-weight: inherit;
  display: inline-block;
  font-variant-numeric: tabular-nums;
}
.stats .label { margin-top: 8px; font-size: 15px; opacity: .85; letter-spacing: 1px; }

/* ---------------- 产品卡片 ---------------- */
.cards-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
}
.p-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .35s, box-shadow .35s;
}
.p-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.p-card .pic { height: 260px; overflow: hidden; }
.p-card.no-pic {
  border-top: 4px solid transparent;
  position: relative;
  background:
    linear-gradient(155deg, #f7fbff 0%, #eef6fd 55%, #e2f0fb 100%) padding-box,
    linear-gradient(135deg, var(--blue), var(--blue-light)) border-box;
  overflow: hidden;
}
.p-card.no-pic::before {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22,160,220,.14), transparent 68%);
  pointer-events: none;
}
.p-card.no-pic::after {
  content: "";
  position: absolute;
  left: -50px;
  bottom: -80px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14,95,168,.10), transparent 70%);
  pointer-events: none;
}
.p-card.no-pic .body { position: relative; z-index: 1; }
.p-card.no-pic:hover { box-shadow: 0 18px 42px rgba(14,95,168,.20); }
.p-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.p-card:hover .pic img { transform: scale(1.06); }
.p-card .body { padding: 30px 32px 34px; }
.p-card .tag {
  display: inline-block;
  font-size: 12px;
  color: var(--blue);
  background: var(--blue-bg);
  border: 1px solid var(--blue-line);
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.p-card h3 { font-size: 22px; margin-bottom: 12px; letter-spacing: 1px; }
.p-card p { color: var(--text-sub); font-size: 15px; }
.p-card .more {
  display: inline-block;
  margin-top: 18px;
  color: var(--blue);
  font-weight: 500;
  font-size: 15px;
}
.p-card .more:hover { color: var(--blue-light); }

/* ---------------- 应用领域 ---------------- */
.apps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}
.app-item {
  background: var(--white);
  border: 1px solid var(--blue-line);
  border-radius: var(--radius);
  padding: 34px 18px;
  text-align: center;
  transition: all .3s;
}
.app-item:hover {
  background: var(--blue);
  border-color: var(--blue);
  transform: translateY(-6px);
  box-shadow: 0 14px 30px rgba(14,95,168,.3);
}
.app-item .ico {
  width: 84px;
  height: 84px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--blue-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: .3s;
}
.app-item:hover .ico { background: rgba(255,255,255,.15); }
.app-item .ico svg { width: 44px; height: 44px; stroke: var(--blue); }
.app-item:hover .ico svg { stroke: var(--white); }
.app-item h4 { font-size: 20px; letter-spacing: 1px; }
.app-item p { font-size: 14px; color: var(--text-sub); margin-top: 8px; }
.app-item:hover h4 { color: var(--white); }
.app-item:hover p { color: rgba(255,255,255,.92); }

/* ---------------- 新闻卡片 ---------------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.n-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .35s, box-shadow .35s;
  display: flex;
  flex-direction: column;
}
.n-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.n-card .pic { height: 190px; overflow: hidden; }
.n-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.n-card:hover .pic img { transform: scale(1.06); }
.n-card .body { padding: 24px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.n-card .date { font-size: 13px; color: var(--blue-light); letter-spacing: 1px; }
.n-card h3 {
  margin: 10px 0 12px;
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: .5px;
}
.n-card p { font-size: 14px; color: var(--text-sub); flex: 1; }
.n-card .more { margin-top: 16px; font-size: 14px; color: var(--blue); font-weight: 500; }
.center-more { text-align: center; margin-top: 50px; }

/* ---------------- CTA 带状区 ---------------- */
.cta {
  background:
    linear-gradient(120deg, rgba(10,61,110,.95), rgba(14,95,168,.9)),
    url("https://images.unsplash.com/photo-1518709268805-4e9042af9f23?auto=format&fit=crop&w=1920&q=80") center/cover fixed;
  color: var(--white);
  text-align: center;
  padding: 80px 0;
}
.cta h2 { font-size: 30px; letter-spacing: 3px; margin-bottom: 14px; }
.cta p { opacity: .9; margin-bottom: 34px; letter-spacing: 1px; }

/* ---------------- 内页通用 ---------------- */
.page-body { padding: 80px 0; }

/* 关于我们 */
.about-sec { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: center; margin-bottom: 80px; }
.about-sec.rev { grid-template-columns: 1.15fr 1fr; }
.about-sec.rev .pic { order: 2; }
.about-sec .pic img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.about-sec .txt h3 {
  font-size: 26px;
  letter-spacing: 2px;
  margin-bottom: 6px;
  padding-left: 16px;
  border-left: 4px solid var(--blue);
  line-height: 1.4;
}
.about-sec .txt .en { color: var(--blue-light); font-size: 13px; letter-spacing: 3px; text-transform: uppercase; margin-bottom: 22px; display: block; padding-left: 20px; }
.about-sec .txt p { color: var(--text-sub); margin-bottom: 14px; text-align: justify; }

/* 母公司 · 环绕圆图布局 */
.plan-sec { max-width: 1060px; margin: 0 auto; }
.plan-head { text-align: center; margin: 0 auto 50px; }
.plan-head h3 {
  font-size: 34px;
  letter-spacing: 3px;
  color: var(--blue-deep);
  margin-bottom: 8px;
}
.plan-head .en { color: var(--blue-light); font-size: 13px; letter-spacing: 3px; text-transform: uppercase; display: block; margin-bottom: 18px; }
.plan-head p { color: var(--text); font-size: 17px; line-height: 1.9; text-align: left; }
.plan-row {
  display: grid;
  grid-template-columns: 1fr 360px 1fr;
  gap: 44px;
  align-items: center;
}
.plan-circle {
  width: 360px;
  height: 360px;
  border-radius: 50%;
  overflow: hidden;
  border: 6px solid var(--blue);
  box-shadow: 0 0 0 12px var(--blue-bg), var(--shadow-hover);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.plan-circle img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s;
}
.plan-circle:hover img { transform: scale(1.08); }
.plan-side { text-align: center; padding: 0 6px; }
.plan-side h4 {
  font-size: 19px;
  color: var(--blue);
  letter-spacing: 1px;
  margin-bottom: 12px;
  position: relative;
  padding-bottom: 10px;
}
.plan-side h4::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: 34px;
  height: 3px;
  background: var(--blue-light);
  border-radius: 2px;
}
.plan-side p { color: var(--text); font-size: 17px; line-height: 1.9; }

/* 荣誉 */
.honors { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.honor {
  background: var(--blue-bg);
  border: 1px solid var(--blue-line);
  border-radius: var(--radius);
  padding: 36px 24px;
  text-align: center;
  transition: all .3s;
}
.honor:hover { background: var(--white); box-shadow: var(--shadow-hover); transform: translateY(-6px); }
.honor .medal { font-size: 44px; line-height: 1.2; }
.honor .ico {
  width: 80px;
  height: 80px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  display: flex;
  align-items: center;
  justify-content: center;
  transition: .3s;
}
.honor .ico svg { width: 40px; height: 40px; stroke: var(--white); }
.honor:hover .ico { transform: scale(1.1); }
.honor h4 { margin-top: 16px; font-size: 17px; color: var(--blue-deep); letter-spacing: 1px; }
.honor p { font-size: 13px; color: var(--text-sub); margin-top: 8px; }

/* 发展历程 */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue), var(--blue-light));
}
.t-item { position: relative; padding: 0 0 40px 34px; }
.t-item:last-child { padding-bottom: 0; }
.t-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--white);
  border: 4px solid var(--blue);
  box-shadow: 0 0 0 4px rgba(14,95,168,.15);
}
.t-item .year { font-size: 24px; font-weight: 700; color: var(--blue); }
.t-item h4 { font-size: 18px; margin: 6px 0 8px; letter-spacing: 1px; }
.t-item p { color: var(--text-sub); font-size: 15px; }

/* 定制流程 */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; counter-reset: step; }
.flow-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 34px 16px;
  text-align: center;
  border: 1px solid var(--blue-line);
  position: relative;
  transition: all .3s;
  counter-increment: step;
}
.flow-item:hover { background: var(--blue); border-color: var(--blue); }
.flow-item:hover * { color: var(--white); }
.flow-item::before {
  content: "0" counter(step);
  display: inline-block;
  font-size: 46px;
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 14px;
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: transform .35s cubic-bezier(.34,1.56,.64,1), filter .35s, -webkit-text-fill-color .35s;
}
.flow-item:hover::before {
  -webkit-text-fill-color: var(--white);
  background: none;
  transform: scale(1.22) rotate(-5deg);
  filter: drop-shadow(0 0 16px rgba(255,255,255,.75));
  animation: flowBounce .7s cubic-bezier(.34,1.56,.64,1);
}
@keyframes flowBounce {
  0%   { transform: scale(1) rotate(0deg); }
  35%  { transform: scale(1.45) rotate(6deg) translateY(-8px); }
  70%  { transform: scale(1.14) rotate(-8deg) translateY(2px); }
  100% { transform: scale(1.22) rotate(-5deg) translateY(0); }
}
.flow-item h4 { font-size: 20px; letter-spacing: 1px; }
.flow-item p { font-size: 12.5px; color: var(--text-sub); margin-top: 8px; line-height: 1.6; }

/* 应用领域图文卡 */
.app-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.a-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  height: 300px;
  box-shadow: var(--shadow);
}
.a-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.a-card:hover img { transform: scale(1.08); }
.a-card .mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 35%, rgba(10,61,110,.88));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 26px;
  color: var(--white);
}
.a-card .mask h4 { font-size: 20px; letter-spacing: 2px; }
.a-card .mask p { font-size: 14px; opacity: .9; margin-top: 8px; }

/* 新闻列表页 */
.news-list { max-width: 900px; margin: 0 auto; }
.n-item {
  display: flex;
  gap: 30px;
  background: var(--white);
  border: 1px solid var(--blue-line);
  border-radius: var(--radius);
  padding: 26px 30px;
  margin-bottom: 24px;
  transition: all .3s;
  align-items: flex-start;
}
.n-item:hover { box-shadow: var(--shadow-hover); border-color: var(--blue-light); transform: translateY(-4px); }
.n-item .date-box {
  flex-shrink: 0;
  width: 92px;
  text-align: center;
  background: var(--blue-bg);
  border-radius: 8px;
  padding: 14px 0;
}
.n-item .date-box .d { font-size: 28px; font-weight: 700; color: var(--blue); line-height: 1.2; }
.n-item .date-box .ym { font-size: 13px; color: var(--text-sub); }
.n-item h3 { font-size: 18px; letter-spacing: .5px; line-height: 1.6; }
.n-item h3 a:hover { color: var(--blue); }
.n-item p { font-size: 14px; color: var(--text-sub); margin-top: 8px; }
.n-item .tag-line { margin-top: 12px; }
.n-item .tag-line span {
  display: inline-block;
  font-size: 12px;
  color: var(--blue);
  background: var(--blue-bg);
  border: 1px solid var(--blue-line);
  border-radius: 20px;
  padding: 2px 12px;
  margin-right: 8px;
}

/* 联系我们 */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-bottom: 70px; }
.c-card {
  background: var(--white);
  border: 1px solid var(--blue-line);
  border-radius: var(--radius);
  padding: 38px 30px;
  text-align: center;
  transition: all .3s;
}
.c-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); border-color: var(--blue-light); }
.c-card .ico {
  width: 66px;
  height: 66px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  display: flex;
  align-items: center;
  justify-content: center;
}
.c-card .ico svg { width: 30px; height: 30px; stroke: var(--white); }
.c-card h4 { font-size: 18px; letter-spacing: 2px; color: var(--blue-deep); margin-bottom: 10px; }
.c-card p { color: var(--text-sub); font-size: 15px; }

/* 地图 */
.map-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--blue-line);
}
#bmap { width: 100%; height: 460px; }

/* 留言表单 */
.msg-form { max-width: 760px; margin: 0 auto; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.form-item { display: flex; flex-direction: column; }
.form-item.full { grid-column: 1 / -1; }
.form-item label { font-size: 14px; color: var(--text-sub); margin-bottom: 8px; }
.form-item input, .form-item textarea {
  font-family: var(--font);
  font-size: 15px;
  padding: 13px 16px;
  border: 1px solid var(--blue-line);
  border-radius: 8px;
  outline: none;
  background: var(--white);
  transition: border .25s, box-shadow .25s;
  resize: vertical;
}
.form-item input:focus, .form-item textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(14,95,168,.12);
}
.form-item input::placeholder, .form-item textarea::placeholder { color: #A8B4C0; }
.msg-form .btn { display: block; margin: 28px auto 0; border: none; cursor: pointer; }

/* ---------------- 页脚 ---------------- */
.footer { background: var(--blue-deep); color: rgba(255,255,255,.8); }
.footer .top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  padding: 56px 0 44px;
}
.footer h4 {
  color: var(--white);
  font-size: 17px;
  letter-spacing: 2px;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 12px;
}
.footer h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 3px;
  background: var(--blue-light);
  border-radius: 2px;
}
.footer .f-name {
  display: block;
  color: var(--white);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 18px;
}
.footer p, .footer li { font-size: 14px; line-height: 2; }
.footer .nav-h { display: flex; flex-wrap: wrap; gap: 6px 34px; }
.footer .nav-h li a { transition: .25s; }
.footer .nav-h li a:hover { color: var(--white); }
.footer .f-contact li { display: flex; gap: 10px; }
.footer .f-contact svg { width: 16px; height: 16px; stroke: var(--blue-light); flex-shrink: 0; margin-top: 5px; }
.footer .bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.55);
  letter-spacing: 1px;
}

/* 返回顶部（纯锚点实现） */
.back-top {
  position: fixed;
  right: 26px;
  bottom: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(14,95,168,.4);
  z-index: 90;
  transition: .3s;
}
.back-top:hover { background: var(--blue-deep); transform: translateY(-4px); }
.back-top svg { width: 20px; height: 20px; stroke: var(--white); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .hero-caption h1 { font-size: 36px; }
  .apps { grid-template-columns: repeat(3, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .stats .grid { grid-template-columns: repeat(2, 1fr); }
  .honors { grid-template-columns: repeat(2, 1fr); }
  .plan-row { grid-template-columns: 1fr 300px 1fr; gap: 30px; }
  .plan-circle { width: 300px; height: 300px; }
}

@media (max-width: 768px) {
  .topbar .container span:nth-child(2) { display: none; }
  .header .container { height: 64px; }
  .logo .logo-name { font-size: 20px; letter-spacing: 1px; }

  .nav-btn { display: flex; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
    box-shadow: 0 16px 30px rgba(10,61,110,.12);
  }
  .nav a { padding: 15px 6%; border-bottom: 1px solid var(--blue-bg); }
  .nav a::after { display: none; }
  .nav a.active { background: var(--blue-bg); }
  .nav-toggle:checked ~ .nav { max-height: 420px; }
  .nav-toggle:checked ~ .nav-btn i:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-toggle:checked ~ .nav-btn i:nth-child(2) { opacity: 0; }
  .nav-toggle:checked ~ .nav-btn i:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

  .hero { min-height: 480px; height: 66vh; }
  .hero-caption h1 { font-size: 26px; letter-spacing: 2px; }
  .hero-caption p { font-size: 15px; }
  .hero-caption .en { letter-spacing: 3px; }

  .page-banner { height: 260px; }
  .page-banner h1 { font-size: 26px; }

  .section { padding: 60px 0; }
  .sec-head h2 { font-size: 26px; }

  .about-grid, .about-sec, .about-sec.rev { grid-template-columns: 1fr; gap: 34px; }
  .about-sec.rev .pic { order: 0; }
  .about-img img, .about-sec .pic img { height: 260px; }
  .about-txt h3, .about-sec .txt h3 { font-size: 22px; }

  .stats .grid { grid-template-columns: repeat(2, 1fr); gap: 36px 16px; }
  .stats .num { font-size: 32px; }
  .stats { background-attachment: scroll; }
  .cta { background-attachment: scroll; }

  .cards-2, .news-grid, .app-cards, .contact-cards, .apps { grid-template-columns: 1fr; }
  .apps { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .p-card .pic { height: 210px; }

  .n-item { flex-direction: column; gap: 16px; padding: 22px; }
  .n-item .date-box { width: 100%; display: flex; align-items: baseline; justify-content: center; gap: 8px; padding: 10px 0; }
  .n-item .date-box .d { font-size: 22px; }

  .form-grid { grid-template-columns: 1fr; }
  #bmap { height: 320px; }

  .footer .top { flex-direction: column; gap: 34px; padding: 46px 0 36px; }
  .plan-row { grid-template-columns: 1fr; gap: 34px; }
  .plan-circle { width: 250px; height: 250px; box-shadow: 0 0 0 8px var(--blue-bg), var(--shadow-hover); order: -1; justify-self: center; }
  .plan-head h3 { font-size: 22px; }
  .back-top { right: 16px; bottom: 20px; }
}