/* ============================================================
   RUNAU Official Site — 主样式表
   主题：宝蓝 #1046AD / 黄 #FFE000 / 白
   ============================================================ */

:root {
  --blue: #1046AD;
  --blue-d: #0D47A1;
  --blue-dd: #082B66;
  --navy: #071A3E;
  --yellow: #FFE000;
  --yellow-d: #FFC800;
  --ink: #0F172A;
  --gray: #5B6B84;
  --line: #E4E9F2;
  --bg: #F5F7FB;
  --white: #FFFFFF;
  --shadow-s: 0 2px 12px rgba(13, 42, 99, .08);
  --shadow-m: 0 12px 32px rgba(13, 42, 99, .12);
  --shadow-l: 0 24px 64px rgba(13, 42, 99, .18);
  --radius: 14px;
  --header-h: 78px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --font: "Segoe UI", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", 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: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* 通用小图标占位（待替换iconfont）：所有内联SVG统一 .iconfont 类 */
.iconfont { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; display: inline-block; vertical-align: -0.12em; flex: none; }
.iconfont.filled { fill: currentColor; stroke: none; }

/* ============ 预加载动画 ============ */
#preloader {
  position: fixed; inset: 0; z-index: 9999;
  background: linear-gradient(135deg, var(--blue-d), var(--blue-dd));
  display: flex; align-items: center; justify-content: center;
  transition: opacity .5s var(--ease), visibility .5s;
}
#preloader.done { opacity: 0; visibility: hidden; pointer-events: none; }
.pre-diamond {
  width: 72px; height: 72px; position: relative;
  transform: rotate(45deg);
  border: 3px solid var(--yellow);
  animation: prePulse 1.1s var(--ease) infinite;
}
.pre-diamond::after {
  content: ""; position: absolute; inset: 10px;
  border: 2px solid rgba(255,255,255,.55);
  animation: prePulse 1.1s var(--ease) .18s infinite;
}
@keyframes prePulse {
  0%, 100% { transform: scale(.82); opacity: .55; }
  50% { transform: scale(1); opacity: 1; }
}

/* ============ 顶部导航 ============ */
#site-header { position: relative; z-index: 900; }
.site-header {
  position: fixed; top: 0; left: 0; right: 0; height: var(--header-h);
  display: flex; align-items: center;
  z-index: 900;
  transition: background .35s var(--ease), box-shadow .35s, height .35s;
  background: transparent;
}
.site-header.scrolled {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-s);
  height: 66px;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 52px; width: auto; transition: height .35s var(--ease); filter: drop-shadow(0 2px 6px rgba(0,0,0,.18)); }
.site-header.scrolled .brand img { height: 44px; filter: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 22px; font-weight: 800; letter-spacing: 3px; color: #fff; transition: color .35s; }
.brand-sub { font-size: 10px; letter-spacing: 2.4px; text-transform: uppercase; color: rgba(255,255,255,.75); transition: color .35s; }
.site-header.scrolled .brand-name { color: var(--blue-d); }
.site-header.scrolled .brand-sub { color: var(--gray); }

.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav > .nav-item { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 10px 16px; font-size: 15px; font-weight: 600;
  color: rgba(255,255,255,.92); letter-spacing: .4px;
  transition: color .3s; white-space: nowrap;
}
.nav-link .caret { transition: transform .3s; font-size: 11px; }
.site-header.scrolled .nav-link { color: var(--ink); }
.nav-link:hover, .nav-item.active > .nav-link { color: var(--yellow); }
.site-header.scrolled .nav-link:hover, .site-header.scrolled .nav-item.active > .nav-link { color: var(--blue); }
.nav-item.active > .nav-link { position: relative; }
.nav-item.active > .nav-link::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 3px;
  background: var(--yellow); border-radius: 2px;
}
.has-dropdown:hover .caret { transform: rotate(180deg); }

/* 下拉菜单 */
.dropdown {
  position: absolute; top: calc(100% + 10px); left: 50%;
  transform: translateX(-50%) translateY(12px);
  min-width: 230px; background: #fff; border-radius: 12px;
  box-shadow: var(--shadow-l); padding: 10px;
  opacity: 0; visibility: hidden;
  transition: all .3s var(--ease);
}
.has-dropdown:hover .dropdown, .has-dropdown.open .dropdown {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.dropdown::before { content: ""; position: absolute; top: -6px; left: 50%; transform: translateX(-50%) rotate(45deg); width: 12px; height: 12px; background: #fff; border-radius: 2px; }
.dropdown a {
  display: flex; flex-direction: column; gap: 1px;
  padding: 10px 14px; border-radius: 8px;
  font-size: 14px; font-weight: 600; color: var(--ink);
  transition: background .25s, color .25s, padding-left .25s;
}
.dropdown a span { font-size: 12px; font-weight: 400; color: var(--gray); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
.dropdown a:hover { background: #F0F4FC; color: var(--blue); padding-left: 18px; }
.dropdown .dd-all { border-top: 1px solid var(--line); margin-top: 6px; padding-top: 12px; color: var(--blue); }

.header-cta { display: inline-flex; align-items: center; gap: 8px; }

/* 汉堡按钮 */
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 1001; }
.nav-toggle span { width: 26px; height: 2.5px; background: #fff; border-radius: 2px; transition: all .35s var(--ease); }
.site-header.scrolled .nav-toggle span, .nav-open .nav-toggle span { background: var(--ink); }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ============ 按钮 ============ */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 30px; border-radius: 999px;
  font-size: 15px; font-weight: 700; letter-spacing: .5px;
  overflow: hidden; transition: transform .3s var(--ease), box-shadow .3s, color .3s, border-color .3s;
}
.btn::before {
  content: ""; position: absolute; top: 0; left: -80%; width: 50%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255,255,255,.5), transparent);
  transform: skewX(-20deg); transition: left .55s var(--ease);
}
.btn:hover::before { left: 130%; }
.btn:hover { transform: translateY(-2px); }
.btn-yellow { background: var(--yellow); color: var(--blue-dd); box-shadow: 0 8px 24px rgba(255, 224, 0, .35); }
.btn-yellow:hover { box-shadow: 0 12px 30px rgba(255, 224, 0, .5); }
.btn-blue { background: var(--blue); color: #fff; box-shadow: 0 8px 24px rgba(16, 70, 173, .35); }
.btn-ghost { border: 2px solid rgba(255,255,255,.65); color: #fff; }
.btn-ghost:hover { border-color: var(--yellow); color: var(--yellow); }
.btn-outline { border: 2px solid var(--blue); color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }
.btn-sm { padding: 9px 20px; font-size: 13.5px; }

/* ============ 首屏轮播（首页） ============ */
.hero { position: relative; height: 100vh; min-height: 620px; overflow: hidden; background: var(--navy); }
.hero-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity 1s var(--ease), visibility 1s; }
.hero-slide.active { opacity: 1; visibility: visible; }
.hero-slide .bg {
  position: absolute; inset: -60px;
  background-size: cover; background-position: center;
  animation: kenburns 9s var(--ease) both;
}
.hero-slide.active .bg { animation-play-state: running; }
@keyframes kenburns {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.12) translate(-14px, -10px); }
}
.hero-slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(7,26,62,.88) 0%, rgba(13,71,161,.62) 48%, rgba(16,70,173,.28) 100%);
}
.hero-content {
  position: relative; z-index: 2; height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  color: #fff; padding-top: var(--header-h);
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase;
  color: var(--yellow); margin-bottom: 22px;
}
.hero-tag::before { content: ""; width: 34px; height: 2px; background: var(--yellow); }
.hero-title {
  font-size: clamp(38px, 5.6vw, 74px); font-weight: 800; line-height: 1.08;
  letter-spacing: -.5px; max-width: 820px; margin-bottom: 24px;
  text-shadow: 0 4px 30px rgba(0,0,0,.3);
}
.hero-desc { font-size: clamp(15px, 1.4vw, 19px); color: rgba(255,255,255,.85); max-width: 640px; margin-bottom: 38px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-slide .anim { opacity: 0; transform: translateY(34px); }
.hero-slide.active .anim { animation: heroUp .9s var(--ease) forwards; }
.hero-slide.active .anim.d1 { animation-delay: .15s; }
.hero-slide.active .anim.d2 { animation-delay: .32s; }
.hero-slide.active .anim.d3 { animation-delay: .5s; }
.hero-slide.active .anim.d4 { animation-delay: .68s; }
@keyframes heroUp { to { opacity: 1; transform: translateY(0); } }

.hero-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 52px; height: 52px; border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.4); color: #fff;
  display: flex; align-items: center; justify-content: center;
  transition: all .3s var(--ease); font-size: 18px;
}
.hero-arrow:hover { background: var(--yellow); border-color: var(--yellow); color: var(--blue-dd); }
.hero-arrow.prev { left: 28px; }
.hero-arrow.next { right: 28px; }
.hero-dots { position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; gap: 10px; }
.hero-dots button { width: 30px; height: 4px; border-radius: 3px; background: rgba(255,255,255,.35); transition: all .35s var(--ease); }
.hero-dots button.active { width: 52px; background: var(--yellow); }
.hero-scroll {
  position: absolute; bottom: 30px; left: 44px; z-index: 5;
  color: rgba(255,255,255,.7); font-size: 11px; letter-spacing: 2.5px; text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.hero-scroll::after { content: ""; width: 1.5px; height: 44px; background: linear-gradient(var(--yellow), transparent); animation: scrollHint 1.8s var(--ease) infinite; }
@keyframes scrollHint { 0% { transform: scaleY(0); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: top; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ============ 内页横幅 ============ */
.page-banner {
  position: relative; padding: calc(var(--header-h) + 72px) 0 84px;
  background: linear-gradient(115deg, var(--blue-dd) 0%, var(--blue-d) 55%, var(--blue) 100%);
  color: #fff; overflow: hidden;
}
.page-banner .pb-title { font-size: clamp(32px, 4vw, 52px); font-weight: 800; letter-spacing: .5px; margin: 10px 0 14px; }
.page-banner .pb-crumb { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,.75); }
.page-banner .pb-crumb a:hover { color: var(--yellow); }
.page-banner .pb-crumb .sep { font-size: 11px; opacity: .6; }
.pb-deco { position: absolute; pointer-events: none; }
.pb-deco.diamond { border: 2px solid rgba(255,224,0,.35); transform: rotate(45deg); animation: floatY 7s ease-in-out infinite; }
.pb-deco.dot { background: rgba(255,255,255,.14); border-radius: 50%; animation: floatY 9s ease-in-out infinite; }
@keyframes floatY { 0%, 100% { transform: translateY(0) rotate(45deg); } 50% { transform: translateY(-22px) rotate(45deg); } }

/* ============ 区块通用 ============ */
.section { padding: 96px 0; position: relative; }
.section.alt { background: var(--bg); }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head.left { margin: 0 0 44px; text-align: left; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 800; letter-spacing: 3px; text-transform: uppercase;
  color: var(--blue); margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 26px; height: 2.5px; background: var(--yellow); }
.section-head.center .eyebrow::after { content: ""; width: 26px; height: 2.5px; background: var(--yellow); }
.sec-title { font-size: clamp(28px, 3.4vw, 44px); font-weight: 800; line-height: 1.2; letter-spacing: -.4px; }
.sec-sub { color: var(--gray); margin-top: 16px; font-size: 16.5px; }

/* 滚动渐显 */
.reveal { opacity: 0; transform: translateY(38px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.lx { transform: translateX(-44px); }
.reveal.rx { transform: translateX(44px); }
.reveal.zoom { transform: scale(.92); }
.dl-1 { transition-delay: .12s; } .dl-2 { transition-delay: .24s; }
.dl-3 { transition-delay: .36s; } .dl-4 { transition-delay: .48s; }

/* 菱形装饰 */
.deco-diamond {
  position: absolute; border: 2px solid rgba(16,70,173,.12); transform: rotate(45deg);
  pointer-events: none; z-index: 0;
}
.deco-diamond.y { border-color: rgba(255,224,0,.5); }

/* ============ 关于预览 ============ */
.about-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; position: relative; z-index: 1; }
.about-visual { position: relative; }
.about-visual .main-img { border-radius: var(--radius); box-shadow: var(--shadow-l); width: 100%; height: 480px; object-fit: cover; }
.about-visual .sub-img {
  position: absolute; right: -28px; bottom: -40px; width: 46%;
  border-radius: var(--radius); border: 6px solid #fff; box-shadow: var(--shadow-m);
  height: 220px; object-fit: cover;
}
.about-exp {
  position: absolute; left: -24px; top: 36px; z-index: 2;
  background: linear-gradient(135deg, var(--blue), var(--blue-d)); color: #fff;
  padding: 20px 24px; border-radius: var(--radius); box-shadow: var(--shadow-m); text-align: center;
}
.about-exp::before { content: ""; position: absolute; inset: 6px; border: 1.5px solid rgba(255,224,0,.6); border-radius: 10px; }
.about-exp b { display: block; font-size: 40px; font-weight: 800; color: var(--yellow); line-height: 1.1; }
.about-exp span { font-size: 12px; letter-spacing: 1px; text-transform: uppercase; opacity: .9; }
.about-copy .lead { font-size: 17.5px; color: var(--ink); margin-bottom: 18px; }
.about-copy p { color: var(--gray); margin-bottom: 14px; }
.about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; margin: 22px 0 30px; }
.about-points li { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 14.5px; }
.about-points .iconfont { color: var(--blue); background: rgba(16,70,173,.1); padding: 6px; border-radius: 8px; width: 30px; height: 30px; }

/* 统计数字 */
.stats-band { background: linear-gradient(120deg, var(--blue-dd), var(--blue-d)); position: relative; overflow: hidden; }
.stats-band::before, .stats-band::after {
  content: ""; position: absolute; border: 2px solid rgba(255,224,0,.16); transform: rotate(45deg);
}
.stats-band::before { width: 340px; height: 340px; top: -170px; right: -110px; }
.stats-band::after { width: 260px; height: 260px; bottom: -140px; left: -90px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 1; padding: 74px 0; }
.stat-item { text-align: center; color: #fff; }
.stat-item b { display: flex; align-items: baseline; justify-content: center; gap: 3px; font-size: clamp(38px, 4vw, 56px); font-weight: 800; color: var(--yellow); line-height: 1.1; }
.stat-item b i { font-style: normal; font-size: .55em; }
.stat-item span { display: block; margin-top: 8px; font-size: 14px; letter-spacing: 1.2px; text-transform: uppercase; color: rgba(255,255,255,.82); }

/* ============ 产品卡片 ============ */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }

.p-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-s); position: relative;
  transition: transform .45s var(--ease), box-shadow .45s;
  display: flex; flex-direction: column;
}
.p-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-l); }
.p-card::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 4px; width: 100%;
  background: linear-gradient(90deg, var(--yellow), var(--yellow-d));
  transform: scaleX(0); transform-origin: left; transition: transform .45s var(--ease);
}
.p-card:hover::after { transform: scaleX(1); }
.p-thumb { position: relative; overflow: hidden; aspect-ratio: 4/3; background: #EEF3FB; }
.p-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.p-card:hover .p-thumb img { transform: scale(1.09); }
.p-badge {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  background: var(--yellow); color: var(--blue-dd);
  font-size: 11px; font-weight: 800; letter-spacing: 1px; text-transform: uppercase;
  padding: 5px 12px; border-radius: 999px;
}
.p-body { padding: 22px 22px 26px; flex: 1; display: flex; flex-direction: column; }
.p-code { font-size: 12px; font-weight: 700; color: var(--blue); letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 6px; }
.p-name { font-size: 18.5px; font-weight: 700; line-height: 1.35; margin-bottom: 8px; }
.p-desc {
  color: var(--gray); font-size: 14px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.p-more {
  margin-top: 16px; display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; font-weight: 700; color: var(--blue);
}
.p-more .iconfont { transition: transform .3s var(--ease); }
.p-card:hover .p-more .iconfont { transform: translateX(5px); }

.center-cta { text-align: center; margin-top: 48px; }

/* ============ 优势卡片 ============ */
.f-card {
  background: #fff; border-radius: var(--radius); padding: 36px 28px;
  box-shadow: var(--shadow-s); position: relative; overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s;
}
.f-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-m); }
.f-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--yellow));
  transform: scaleX(0); transform-origin: left; transition: transform .45s var(--ease);
}
.f-card:hover::before { transform: scaleX(1); }
.f-icon {
  width: 64px; height: 64px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(16,70,173,.1), rgba(16,70,173,.05));
  color: var(--blue); font-size: 28px; margin-bottom: 20px;
  transition: all .4s var(--ease);
}
.f-card:hover .f-icon { background: linear-gradient(135deg, var(--blue), var(--blue-d)); color: var(--yellow); transform: rotate(-6deg) scale(1.06); }
.f-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.f-card p { color: var(--gray); font-size: 14.5px; }

/* ============ 新闻卡片 ============ */
.n-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-s); display: flex; flex-direction: column;
  transition: transform .45s var(--ease), box-shadow .45s;
}
.n-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-l); }
.n-thumb { position: relative; aspect-ratio: 16/10; overflow: hidden; background: #EEF3FB; }
.n-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.n-card:hover .n-thumb img { transform: scale(1.08); }
.n-date {
  position: absolute; left: 16px; top: -34px; z-index: 2;
  background: #fff; border-radius: 12px; box-shadow: var(--shadow-m);
  padding: 10px 14px; text-align: center; min-width: 66px;
}
.n-date b { display: block; font-size: 22px; font-weight: 800; color: var(--blue); line-height: 1.1; }
.n-date span { font-size: 11px; letter-spacing: 1px; text-transform: uppercase; color: var(--gray); }
.n-body { padding: 22px; position: relative; flex: 1; display: flex; flex-direction: column; }
.n-cat {
  align-self: flex-start; font-size: 11px; font-weight: 800; letter-spacing: 1.2px; text-transform: uppercase;
  color: var(--blue); background: rgba(16,70,173,.09); border-radius: 999px; padding: 4px 12px; margin-bottom: 12px;
}
.n-title { font-size: 17.5px; font-weight: 700; line-height: 1.4; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color .3s; }
.n-card:hover .n-title { color: var(--blue); }
.n-desc { color: var(--gray); font-size: 14px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.n-meta { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; font-size: 12.5px; color: var(--gray); }
.n-meta .m { display: inline-flex; align-items: center; gap: 6px; }

/* ============ CTA 横幅 ============ */
.cta-band { position: relative; overflow: hidden; background: linear-gradient(115deg, var(--blue-dd), var(--blue) 60%, #1D5FD0); color: #fff; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding: 78px 0; position: relative; z-index: 1; flex-wrap: wrap; }
.cta-band h2 { font-size: clamp(26px, 3.2vw, 40px); font-weight: 800; line-height: 1.25; }
.cta-band p { color: rgba(255,255,255,.8); margin-top: 10px; max-width: 560px; }
.cta-band .deco-ring { position: absolute; border: 2px solid rgba(255,224,0,.22); transform: rotate(45deg); }

/* ============ 页脚 ============ */
.site-footer { background: var(--navy); color: rgba(255,255,255,.78); position: relative; overflow: hidden; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding: 78px 0 54px; position: relative; z-index: 1; }
.site-footer::before { content: ""; position: absolute; width: 420px; height: 420px; border: 2px solid rgba(255,255,255,.05); transform: rotate(45deg); top: -180px; right: -140px; }
.f-brand img { height: 58px; width: auto; margin-bottom: 18px; }
.f-brand p { font-size: 14px; line-height: 1.8; max-width: 300px; }
.f-col h4 { color: #fff; font-size: 16px; font-weight: 700; letter-spacing: 1px; margin-bottom: 22px; position: relative; padding-bottom: 12px; }
.f-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 3px; background: var(--yellow); border-radius: 2px; }
.f-col ul li { margin-bottom: 11px; }
.f-col ul a { font-size: 14px; transition: color .3s, padding-left .3s; display: inline-block; }
.f-col ul a:hover { color: var(--yellow); padding-left: 6px; }
.f-contact li { display: flex; gap: 12px; font-size: 14px; margin-bottom: 14px; line-height: 1.6; }
.f-contact .iconfont { color: var(--yellow); margin-top: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.09); padding: 22px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: rgba(255,255,255,.5); }

/* ============ 返回顶部 / Toast ============ */
#back-top {
  position: fixed; right: 26px; bottom: 30px; z-index: 800;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--blue); color: #fff; font-size: 17px;
  box-shadow: var(--shadow-m);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: all .4s var(--ease);
}
#back-top.show { opacity: 1; visibility: visible; transform: none; }
#back-top:hover { background: var(--yellow); color: var(--blue-dd); transform: translateY(-3px); }

#toast-wrap { position: fixed; top: 92px; left: 50%; transform: translateX(-50%); z-index: 9999; display: flex; flex-direction: column; gap: 10px; align-items: center; }
.toast {
  background: #fff; border-radius: 12px; box-shadow: var(--shadow-l);
  padding: 14px 22px; font-size: 14.5px; font-weight: 600;
  display: flex; align-items: center; gap: 10px;
  animation: toastIn .4s var(--ease);
  border-left: 4px solid var(--blue);
}
.toast.ok { border-left-color: #16A34A; } .toast.ok .iconfont { color: #16A34A; }
.toast.err { border-left-color: #DC2626; } .toast.err .iconfont { color: #DC2626; }
@keyframes toastIn { from { opacity: 0; transform: translateY(-14px); } }

/* ============ 骨架屏 ============ */
.skeleton { position: relative; overflow: hidden; background: #EDF1F8; border-radius: 8px; }
.skeleton::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.75), transparent);
  animation: shimmer 1.4s infinite;
}
@keyframes shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }
.sk-card { height: 330px; border-radius: var(--radius); }
.sk-row { height: 14px; margin-bottom: 12px; }

/* ============ 产品中心页 ============ */
.products-layout { display: grid; grid-template-columns: 280px 1fr; gap: 40px; align-items: start; }
.cat-panel { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-s); overflow: hidden; position: sticky; top: 96px; }
.cat-panel .panel-title {
  background: linear-gradient(115deg, var(--blue-d), var(--blue));
  color: #fff; font-weight: 700; font-size: 16px; letter-spacing: 1px;
  padding: 18px 22px; display: flex; align-items: center; gap: 10px;
}
.cat-list { padding: 10px; }
.cat-group { margin-bottom: 4px; }
.cat-group > button {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px; border-radius: 9px; font-weight: 700; font-size: 14.5px;
  color: var(--ink); transition: all .25s;
}
.cat-group > button:hover { background: #F0F4FC; color: var(--blue); }
.cat-group > button .iconfont { transition: transform .3s; font-size: 12px; color: var(--gray); }
.cat-group.open > button { color: var(--blue); background: rgba(16,70,173,.07); }
.cat-group.open > button .iconfont { transform: rotate(180deg); }
.cat-children { max-height: 0; overflow: hidden; transition: max-height .4s var(--ease); }
.cat-group.open .cat-children { max-height: 400px; }
.cat-children a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 14px 9px 30px; font-size: 13.5px; color: var(--gray);
  border-radius: 8px; transition: all .25s; position: relative;
}
.cat-children a::before { content: ""; position: absolute; left: 18px; top: 50%; width: 5px; height: 5px; transform: translateY(-50%) rotate(45deg); background: var(--line); transition: background .25s; }
.cat-children a:hover, .cat-children a.active { color: var(--blue); background: #F0F4FC; font-weight: 600; }
.cat-children a.active::before { background: var(--yellow); }
.cat-children a .cnt { font-size: 11px; background: #EEF2F9; border-radius: 999px; padding: 1px 9px; color: var(--gray); }

.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.chip {
  padding: 8px 18px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
  border: 1.5px solid var(--line); color: var(--gray); background: #fff;
  transition: all .3s var(--ease);
}
.chip:hover { border-color: var(--blue); color: var(--blue); }
.chip.active { background: var(--blue); border-color: var(--blue); color: #fff; box-shadow: 0 6px 16px rgba(16,70,173,.3); }

.list-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; gap: 14px; flex-wrap: wrap; }
.list-head .total { color: var(--gray); font-size: 14px; }
.list-head .total b { color: var(--blue); font-size: 17px; }

/* 分页 */
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 52px; }
.pagination button {
  min-width: 42px; height: 42px; padding: 0 12px; border-radius: 10px;
  border: 1.5px solid var(--line); background: #fff; color: var(--ink);
  font-weight: 600; font-size: 14px; transition: all .3s var(--ease);
  display: inline-flex; align-items: center; justify-content: center;
}
.pagination button:hover:not(:disabled) { border-color: var(--blue); color: var(--blue); }
.pagination button.active { background: var(--blue); border-color: var(--blue); color: #fff; box-shadow: 0 6px 16px rgba(16,70,173,.3); }
.pagination button:disabled { opacity: .4; cursor: not-allowed; }

.empty-state { text-align: center; padding: 70px 20px; color: var(--gray); }
.empty-state .iconfont { font-size: 52px; color: #C6D2E6; margin-bottom: 14px; display: block; }
.empty-state p { font-size: 15px; }

/* ============ 产品详情 ============ */
.detail-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.gallery-main { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-m); aspect-ratio: 4/3; background: #EEF3FB; }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; animation: fadeIn .5s var(--ease); }
@keyframes fadeIn { from { opacity: 0; transform: scale(1.03); } }
.gallery-nav { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 14px; }
.gallery-nav button { border-radius: 10px; overflow: hidden; aspect-ratio: 1; border: 2.5px solid transparent; padding: 0; background: #EEF3FB; transition: border-color .3s, transform .3s; }
.gallery-nav button img { width: 100%; height: 100%; object-fit: cover; }
.gallery-nav button:hover { transform: translateY(-3px); }
.gallery-nav button.active { border-color: var(--blue); }
.d-info .p-code { font-size: 13px; }
.d-info h1 { font-size: clamp(26px, 3vw, 38px); font-weight: 800; line-height: 1.25; margin: 8px 0 16px; }
.d-info .d-desc { color: var(--gray); font-size: 16px; margin-bottom: 26px; padding-bottom: 26px; border-bottom: 1px dashed var(--line); }
.d-feats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 22px; margin-bottom: 32px; }
.d-feats li { display: flex; gap: 10px; align-items: center; font-size: 14.5px; font-weight: 600; }
.d-feats .iconfont { color: var(--blue); }
.detail-tabs { display: flex; gap: 0; border-bottom: 2px solid var(--line); margin: 64px 0 30px; }
.detail-tabs button {
  padding: 14px 28px; font-weight: 700; font-size: 15.5px; color: var(--gray);
  position: relative; transition: color .3s;
}
.detail-tabs button::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 3px;
  background: var(--yellow); transform: scaleX(0); transition: transform .35s var(--ease);
}
.detail-tabs button.active { color: var(--blue); }
.detail-tabs button.active::after { transform: scaleX(1); }
.rich { color: #334155; font-size: 15.5px; line-height: 1.85; }
.rich h1, .rich h2, .rich h3 { color: var(--ink); margin: 26px 0 14px; font-weight: 700; }
.rich p { margin-bottom: 14px; }
.rich img { border-radius: 10px; margin: 18px 0; box-shadow: var(--shadow-s); }
.rich ul, .rich ol { padding-left: 22px; margin-bottom: 14px; list-style: disc; }
.rich ol { list-style: decimal; }
.rich li { margin-bottom: 6px; }
.rich table { width: 100%; border-collapse: collapse; margin: 18px 0; }
.rich th, .rich td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.rich th { background: #F0F4FC; color: var(--blue-d); }

/* ============ 新闻列表 / 详情 ============ */
.news-item {
  display: grid; grid-template-columns: 300px 1fr; gap: 30px;
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-s);
  overflow: hidden; transition: transform .4s var(--ease), box-shadow .4s;
}
.news-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-m); }
.news-item .ni-thumb { overflow: hidden; min-height: 210px; background: #EEF3FB; }
.news-item .ni-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.news-item:hover .ni-thumb img { transform: scale(1.07); }
.ni-body { padding: 28px 30px 24px 4px; display: flex; flex-direction: column; }
.article-head { max-width: 860px; margin: 0 auto; }
.article-head .n-cat { margin-bottom: 16px; }
.article-head h1 { font-size: clamp(26px, 3vw, 40px); font-weight: 800; line-height: 1.3; margin-bottom: 18px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 22px; color: var(--gray); font-size: 13.5px; padding-bottom: 26px; border-bottom: 1px solid var(--line); margin-bottom: 34px; }
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-hero { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-m); margin-bottom: 36px; }
.article-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 52px; padding-top: 26px; border-top: 1px solid var(--line); }
.article-nav a { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--gray); transition: color .3s; max-width: 46%; }
.article-nav a:hover { color: var(--blue); }

/* ============ 招贤纳士 ============ */
.job-item { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-s); margin-bottom: 18px; overflow: hidden; transition: box-shadow .35s; }
.job-item:hover { box-shadow: var(--shadow-m); }
.job-head { display: flex; align-items: center; gap: 20px; padding: 24px 28px; cursor: pointer; }
.job-head .jh-icon {
  width: 52px; height: 52px; border-radius: 14px; flex: none;
  background: linear-gradient(135deg, rgba(16,70,173,.1), rgba(255,224,0,.14));
  color: var(--blue); display: flex; align-items: center; justify-content: center; font-size: 22px;
  transition: all .35s var(--ease);
}
.job-item.open .jh-icon { background: linear-gradient(135deg, var(--blue), var(--blue-d)); color: var(--yellow); transform: rotate(-6deg); }
.jh-main { flex: 1; min-width: 0; }
.jh-main h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.jh-tags { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 13px; color: var(--gray); }
.jh-tags span { display: inline-flex; align-items: center; gap: 6px; }
.jh-salary { color: var(--blue); font-weight: 800; font-size: 15px; white-space: nowrap; }
.jh-arrow { width: 34px; height: 34px; border-radius: 50%; border: 1.5px solid var(--line); display: flex; align-items: center; justify-content: center; color: var(--gray); transition: all .35s var(--ease); flex: none; }
.job-item.open .jh-arrow { background: var(--blue); border-color: var(--blue); color: #fff; transform: rotate(180deg); }
.job-body { max-height: 0; overflow: hidden; transition: max-height .5s var(--ease); }
.job-item.open .job-body { max-height: 900px; }
.job-body-inner { padding: 4px 28px 28px; }
.job-body h4 { font-size: 15px; font-weight: 700; color: var(--blue-d); margin: 18px 0 10px; display: flex; align-items: center; gap: 9px; }
.job-body h4::before { content: ""; width: 8px; height: 8px; transform: rotate(45deg); background: var(--yellow); border-radius: 2px; }
.job-body ul li { position: relative; padding-left: 18px; color: var(--gray); font-size: 14.5px; margin-bottom: 7px; }
.job-body ul li::before { content: ""; position: absolute; left: 2px; top: 10px; width: 5px; height: 5px; border-radius: 50%; background: var(--blue); opacity: .55; }

/* ============ 联系我们 ============ */
.contact-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 64px; }
.c-card {
  background: #fff; border-radius: var(--radius); padding: 30px 24px; text-align: center;
  box-shadow: var(--shadow-s); transition: all .4s var(--ease);
}
.c-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-m); background: var(--blue); }
.c-card .iconfont { width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%; background: rgba(16,70,173,.08); color: var(--blue); display: flex; align-items: center; justify-content: center; font-size: 24px; transition: all .4s var(--ease); }
.c-card:hover .iconfont { background: var(--yellow); color: var(--blue-dd); }
.c-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; transition: color .3s; }
.c-card:hover h4 { color: #fff; }
.c-card p { font-size: 13.5px; color: var(--gray); line-height: 1.7; transition: color .3s; }
.c-card:hover p { color: rgba(255,255,255,.85); }
.contact-layout { display: grid; grid-template-columns: 1fr 1.15fr; gap: 44px; align-items: start; }
.form-panel { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-m); padding: 40px; }
.form-panel h3 { font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.form-panel .fp-sub { color: var(--gray); font-size: 14px; margin-bottom: 28px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 700; color: var(--ink); letter-spacing: .3px; }
.field label i { color: #DC2626; font-style: normal; margin-left: 3px; }
.field input, .field textarea {
  border: 1.5px solid var(--line); border-radius: 10px; padding: 12px 15px;
  font-size: 14.5px; color: var(--ink); background: #FAFBFE;
  transition: border-color .3s, box-shadow .3s, background .3s; outline: none; width: 100%;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--blue); background: #fff; box-shadow: 0 0 0 4px rgba(16,70,173,.1); }
.form-note { font-size: 12.5px; color: var(--gray); margin-top: 14px; }

/* 关于页：使命卡 */
.mv-card {
  background: #fff; border-radius: var(--radius); padding: 40px 32px;
  box-shadow: var(--shadow-s); position: relative; overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s;
}
.mv-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-m); }
.mv-card::after { content: ""; position: absolute; right: -34px; top: -34px; width: 110px; height: 110px; transform: rotate(45deg); background: linear-gradient(135deg, rgba(255,224,0,.16), rgba(16,70,173,.08)); border-radius: 18px; }
.mv-card .iconfont { font-size: 34px; color: var(--blue); margin-bottom: 18px; display: block; }
.mv-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 12px; }
.mv-card p { color: var(--gray); font-size: 14.5px; }

/* 时间轴 */
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--blue), var(--yellow)); }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -33px; top: 6px; width: 14px; height: 14px;
  transform: rotate(45deg); background: #fff; border: 3px solid var(--blue); border-radius: 3px;
}
.tl-item b { display: block; font-size: 20px; font-weight: 800; color: var(--blue); }
.tl-item h4 { font-size: 16.5px; font-weight: 700; margin: 4px 0 6px; }
.tl-item p { color: var(--gray); font-size: 14.5px; }

/* 认证徽章卡 */
.cert-card {
  background: #fff; border: 1.5px solid var(--line); border-radius: var(--radius);
  padding: 30px 24px; text-align: center; transition: all .4s var(--ease);
}
.cert-card:hover { border-color: var(--blue); transform: translateY(-6px); box-shadow: var(--shadow-m); }
.cert-card .iconfont { font-size: 40px; color: var(--blue); display: block; margin-bottom: 14px; }
.cert-card h4 { font-size: 16px; font-weight: 700; }
.cert-card p { font-size: 13px; color: var(--gray); margin-top: 6px; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 80px; }
  .products-layout { grid-template-columns: 1fr; }
  .cat-panel { position: static; }
  .contact-cards { grid-template-columns: repeat(2, 1fr); }
  .detail-wrap { grid-template-columns: 1fr; gap: 36px; }
  .contact-layout { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
}
@media (max-width: 860px) {
  .main-nav {
    position: fixed; inset: 0; z-index: 1000;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 110px 8% 40px; gap: 4px;
    transform: translateX(100%); transition: transform .45s var(--ease);
    overflow-y: auto;
  }
  .nav-open .main-nav { transform: none; }
  .main-nav > .nav-item > .nav-link {
    color: var(--ink) !important; font-size: 17px; padding: 15px 4px;
    border-bottom: 1px solid var(--line); width: 100%; justify-content: space-between;
  }
  .dropdown {
    position: static; transform: none; opacity: 1; visibility: visible;
    box-shadow: none; padding: 0 0 6px 16px; min-width: 0; display: none;
    background: transparent;
  }
  .dropdown::before { display: none; }
  .has-dropdown.open .dropdown { display: block; }
  .dropdown a { color: var(--gray); padding: 9px 10px; }
  .dropdown a span { display: none; }
  .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-open { overflow: hidden; }
  .nav-open .site-header { background: #fff; box-shadow: var(--shadow-s); }
  .nav-open .brand-name { color: var(--blue-d); }
  .nav-open .brand-sub { color: var(--gray); }
  .nav-open .brand img { filter: none; }
}
@media (max-width: 768px) {
  :root { --header-h: 66px; }
  .section { padding: 68px 0; }
  .grid-3, .grid-2, .form-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .hero { min-height: 560px; height: 92vh; }
  .hero-arrow { display: none; }
  .hero-scroll { display: none; }
  .news-item { grid-template-columns: 1fr; }
  .news-item .ni-thumb { min-height: 200px; }
  .ni-body { padding: 22px; }
  .footer-top { grid-template-columns: 1fr; gap: 34px; padding: 56px 0 40px; }
  .about-visual .sub-img { display: none; }
  .about-visual .main-img { height: 320px; }
  .about-exp { left: 12px; top: -26px; padding: 14px 18px; }
  .about-exp b { font-size: 30px; }
  .about-points { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .detail-tabs button { padding: 12px 16px; font-size: 14px; }
  .form-panel { padding: 28px 22px; }
  .job-head { padding: 20px; gap: 14px; flex-wrap: wrap; }
  .jh-salary { order: 3; width: 100%; padding-left: 66px; }
  .cta-inner { padding: 58px 0; }
  .gallery-nav { grid-template-columns: repeat(4, 1fr); }
}