/* ============ V-Vanguard Space Tech 官网样式 ============ */
:root {
  --primary: #1e56d6;
  --primary-dark: #123c9e;
  --navy: #0a1633;
  --navy-2: #101f47;
  --cyan: #37b6ff;
  --text: #2b2f36;
  --muted: #6b7280;
  --bg: #f5f7fa;
  --line: #e5e8ef;
  --white: #ffffff;
  --shadow: 0 10px 30px rgba(10, 22, 51, 0.08);
  --radius: 10px;
  /* 子页 banner 高度：可按需自行调整（建议 220px ~ 460px） */
  --subhero-h: 340px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { width: min(1200px, 92%); margin: 0 auto; }

/* ============ 顶部导航 ============ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s;
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(10, 22, 51, 0.08); }
.header-inner {
  width: min(1320px, 95%); margin: 0 auto;
  height: 76px; display: flex; align-items: center; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo img { height: 54px; width: auto; }
.logo-text { line-height: 1.2; }
.logo-text b { display: block; font-size: 17px; color: var(--primary); letter-spacing: 1px; }
.logo-text span { font-size: 10px; color: var(--muted); letter-spacing: 0.4px; }

.nav { display: flex; align-items: center; margin-left: auto; }
.nav > li { position: relative; }
.nav > li > a {
  display: block; padding: 26px 16px; font-size: 15px; font-weight: 500;
  color: var(--text); position: relative; white-space: nowrap;
}
.nav > li > a::after {
  content: ""; position: absolute; left: 50%; bottom: 16px;
  width: 0; height: 3px; background: var(--primary); border-radius: 2px;
  transform: translateX(-50%); transition: width 0.25s;
}
.nav > li:hover > a, .nav > li.active > a { color: var(--primary); }
.nav > li:hover > a::after, .nav > li.active > a::after { width: 26px; }
.dropdown {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(8px);
  background: var(--white); border-radius: 8px; box-shadow: 0 12px 40px rgba(10, 22, 51, 0.14);
  min-width: 230px; padding: 8px 0; opacity: 0; visibility: hidden;
  transition: all 0.25s; border-top: 3px solid var(--primary);
}
.nav > li:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown a {
  display: block; padding: 9px 22px; font-size: 14px; color: var(--text);
  transition: all 0.2s; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 340px;
}
.dropdown a:hover { background: #f0f4ff; color: var(--primary); padding-left: 27px; }

.header-tools { display: flex; align-items: center; gap: 12px; margin-left: 8px; }
.lang-btn {
  border: 1px solid var(--primary); color: var(--primary); background: transparent;
  padding: 5px 12px; border-radius: 20px; font-size: 13px; cursor: pointer; font-weight: 600;
  transition: all 0.2s; white-space: nowrap;
}
.lang-btn:hover { background: var(--primary); color: #fff; }
.search-toggle {
  width: 36px; height: 36px; border-radius: 50%; border: none; background: #f0f3fa;
  cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--text);
  transition: all 0.2s;
}
.search-toggle:hover { background: var(--primary); color: #fff; }
.search-box {
  position: absolute; top: 100%; left: 0; right: 0; background: #fff;
  border-bottom: 1px solid var(--line); box-shadow: 0 10px 30px rgba(10,22,51,.1);
  display: none; padding: 14px 0;
}
.search-box.open { display: block; }
.search-box form { width: min(720px, 90%); margin: 0 auto; display: flex; gap: 10px; }
.search-box input {
  flex: 1; border: 2px solid var(--line); border-radius: 24px; padding: 10px 20px;
  font-size: 14px; outline: none; transition: border 0.2s;
}
.search-box input:focus { border-color: var(--primary); }
.search-box button {
  background: var(--primary); color: #fff; border: none; border-radius: 24px;
  padding: 0 28px; cursor: pointer; font-size: 14px;
}
.menu-btn { display: none; }

/* ============ 首页 Hero 3D 立体轮播 ============ */
.hero {
  position: relative; height: calc(100vh - 77px); min-height: 480px; overflow: hidden;
  background: radial-gradient(120% 95% at 50% 42%, #12244f 0%, #0a1530 45%, #050b1c 100%);
}
/* 背景星空点缀 */
.hero::before {
  content: ""; position: absolute; inset: 0; opacity: 0.5; pointer-events: none;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%, rgba(255,255,255,.55), transparent),
    radial-gradient(1.5px 1.5px at 78% 16%, rgba(255,255,255,.45), transparent),
    radial-gradient(1px 1px at 34% 68%, rgba(255,255,255,.4), transparent),
    radial-gradient(1.5px 1.5px at 62% 82%, rgba(255,255,255,.35), transparent),
    radial-gradient(1px 1px at 88% 58%, rgba(255,255,255,.4), transparent);
}
.hero-stage {
  position: absolute; inset: 0;
  perspective: 1500px; perspective-origin: 50% 45%;
}
.hero-slide {
  position: absolute; left: 50%; top: 50%;
  width: min(1340px, 80vw); height: min(600px, 68vh);
  border-radius: 16px; overflow: hidden; background: #0a1530;
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.6);
  transform-style: preserve-3d; backface-visibility: hidden;
  opacity: 0; pointer-events: none; z-index: 1;
  transform: translate(-50%, -50%) translateZ(-500px) scale(0.7);
  transition: transform 1s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.9s ease, filter 0.9s ease, box-shadow 0.9s ease;
}
/* 铺满模式：主图占满整个 banner 区域（含两侧留白与圆角） */
.hero.is-full .hero-slide { width: 100%; height: 100%; border-radius: 0; box-shadow: none; }
.hero.is-full .hero-slide.active { box-shadow: none; }
.hero.is-full .hero-slide.is-prev {
  opacity: 0; z-index: 2;
  transform: translate(-50%, -50%) translateX(-100%) scale(0.96);
  filter: brightness(0.5) saturate(0.85);
}
.hero.is-full .hero-slide.is-next {
  opacity: 0; z-index: 2;
  transform: translate(-50%, -50%) translateX(100%) scale(0.96);
  filter: brightness(0.5) saturate(0.85);
}
.hero.is-full .hero-arrow.prev { left: 22px; }
.hero.is-full .hero-arrow.next { right: 22px; }
.hero-slide.active {
  opacity: 1; pointer-events: auto; z-index: 3;
  transform: translate(-50%, -50%) rotateY(0deg) translateZ(0) scale(1);
  box-shadow: 0 40px 110px rgba(0, 0, 0, 0.72), 0 0 0 1px rgba(255, 255, 255, 0.08);
}
/* 左右相邻画面：沿 Z 轴后推并向内偏转，形成空间纵深 */
.hero-slide.is-prev {
  opacity: 0.6; z-index: 2;
  transform: translate(-50%, -50%) translateX(-58%) rotateY(28deg) translateZ(-230px) scale(0.88);
  filter: brightness(0.5) saturate(0.85);
}
.hero-slide.is-next {
  opacity: 0.6; z-index: 2;
  transform: translate(-50%, -50%) translateX(58%) rotateY(-28deg) translateZ(-230px) scale(0.88);
  filter: brightness(0.5) saturate(0.85);
}
.hero-slide::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(6, 14, 36, 0.34) 0%, rgba(6, 14, 36, 0.38) 55%, rgba(6, 14, 36, 0.62) 100%);
}
.hero-slide .slide-bg {
  position: absolute; inset: -60px; background-size: cover; background-position: center;
  transform: scale(1.1); transition: transform 7s linear;
}
.hero-slide.active .slide-bg { transform: scale(1); }
.hero-content {
  position: absolute; left: 50%; top: 46%; transform: translate(-50%, -50%); z-index: 2;
  width: min(1080px, 90%); text-align: center; color: #fff;
  transition: opacity 0.3s ease;
}
.hero-slide:not(.active) .hero-content { opacity: 0; transition: none; }
/* 顶部小光点装饰 */
.hero-eyebrow {
  width: 46px; height: 3px; border-radius: 2px; margin: 0 auto 24px;
  background: linear-gradient(90deg, transparent, #6fb6ff, transparent);
  opacity: 0; transform: translateY(18px); transition: all 0.7s 0.28s;
}
/* 科技 创新 合作 共赢 —— 大字词组 */
.hero-words {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  gap: 0; font-size: clamp(30px, 5vw, 60px); letter-spacing: 0.12em;
}
.hero-words .hw {
  position: relative; padding: 0 18px; font-weight: 700; text-indent: 0.12em;
  text-shadow: 0 6px 30px rgba(0, 0, 0, 0.55), 0 0 26px rgba(90, 160, 255, 0.35);
  opacity: 0; transform: translateY(26px);
  transition: all 0.75s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.hero-words .hw-last { color: #8ec2ff; }
.hero-words .hw-sep {
  width: 9px; height: 9px; border-radius: 50%; flex: none;
  background: rgba(255, 255, 255, 0.92); box-shadow: 0 0 14px rgba(120, 180, 255, 0.9);
  opacity: 0; transform: scale(0.4); transition: all 0.6s;
}
/* 装饰横线 */
.hero-rule {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  margin: 26px auto 0; opacity: 0; transform: translateY(18px); transition: all 0.7s;
}
.hero-rule i { display: block; width: 74px; height: 1px; background: linear-gradient(90deg, transparent, rgba(255,255,255,.75), transparent); }
.hero-rule b { display: block; width: 7px; height: 7px; border-radius: 50%; background: #8ec2ff; box-shadow: 0 0 12px rgba(140, 195, 255, .95); }
.hero-title {
  font-size: clamp(28px, 4.4vw, 52px); font-weight: 700; line-height: 1.25;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  opacity: 0; transform: translateY(30px); transition: all 0.7s 0.35s;
}
.hero-title em { font-style: normal; color: var(--cyan); }
.hero-sub {
  margin: 20px auto 0; max-width: 820px; font-size: clamp(14px, 1.4vw, 17px); color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.06em;
  opacity: 0; transform: translateY(30px); transition: all 0.7s 0.5s;
}
.hero-slide.active .hero-title, .hero-slide.active .hero-sub,
.hero-slide.active .hero-eyebrow, .hero-slide.active .hero-rule {
  opacity: 1; transform: translateY(0);
}
/* 词组逐字入场 */
.hero-slide.active .hero-words .hw { opacity: 1; transform: translateY(0); }
.hero-slide.active .hero-words .hw:nth-of-type(1) { transition-delay: 0.34s; }
.hero-slide.active .hero-words .hw:nth-of-type(2) { transition-delay: 0.42s; }
.hero-slide.active .hero-words .hw:nth-of-type(3) { transition-delay: 0.50s; }
.hero-slide.active .hero-words .hw:nth-of-type(4) { transition-delay: 0.58s; }
.hero-slide.active .hero-words .hw-sep { opacity: 1; transform: scale(1); transition-delay: 0.46s; }
.hero-slide.active .hero-rule { transition-delay: 0.42s; }
.hero-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 48px; height: 48px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.08); color: #fff; font-size: 20px; cursor: pointer;
  transition: all 0.25s; display: flex; align-items: center; justify-content: center;
}
.hero-arrow:hover { background: var(--primary); border-color: var(--primary); }
.hero-arrow.prev { left: 3%; }
.hero-arrow.next { right: 3%; }
.hero-dots {
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 10px; z-index: 5;
}
.hero-dots span {
  width: 34px; height: 4px; border-radius: 2px; background: rgba(255, 255, 255, 0.35);
  cursor: pointer; transition: all 0.3s;
}
.hero-dots span.active { background: var(--cyan); width: 52px; }
.hero-scroll {
  position: absolute; bottom: 26px; right: 4%; z-index: 5; color: rgba(255,255,255,.7);
  font-size: 12px; letter-spacing: 2px; writing-mode: vertical-rl; animation: floatY 2s infinite;
}
@keyframes floatY { 0%,100% { transform: translateY(0);} 50% { transform: translateY(8px);} }

/* ============ 通用 Section ============ */
.section { padding: 84px 0; }
.section.gray { background: var(--bg); }
.sec-head { text-align: center; margin-bottom: 52px; }
.sec-head .en { font-size: 13px; letter-spacing: 4px; color: var(--primary); text-transform: uppercase; font-weight: 600; }
.sec-head h2 { font-size: clamp(24px, 3vw, 34px); color: var(--navy); margin: 8px 0 12px; font-weight: 700; }
.sec-head .bar { width: 46px; height: 4px; background: linear-gradient(90deg, var(--primary), var(--cyan)); border-radius: 2px; margin: 0 auto; }
.sec-head p.desc { color: var(--muted); margin-top: 14px; max-width: 720px; margin-left: auto; margin-right: auto; }

/* ============ 产品卡片与轮播 ============ */
.prod-slider { position: relative; }
.prod-track-wrap { overflow: hidden; }
.prod-track { display: flex; transition: transform 0.55s ease; }
.prod-card {
  flex: 0 0 25%; padding: 0 12px; cursor: pointer;
}
.prod-card-inner {
  background: #fff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  transition: all 0.3s; height: 100%; display: flex; flex-direction: column;
}
.prod-card-inner:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: transparent; }
.prod-card-img { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.prod-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.prod-card-inner:hover .prod-card-img img { transform: scale(1.07); }
.prod-card-body { padding: 18px 20px 22px; flex: 1; display: flex; flex-direction: column; }
.prod-card-body h3 { font-size: 17px; color: var(--navy); margin-bottom: 8px; font-weight: 600; }
.prod-card-body p { font-size: 13.5px; color: var(--muted); flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.prod-card-more { align-self: flex-start; }
.prod-card-more {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  margin-top: 16px; padding: 7px 22px;
  border: 1px solid var(--primary); border-radius: 30px;
  color: var(--primary); font-size: 13px; font-weight: 500;
  transition: all 0.25s;
}
.prod-card-inner:hover .prod-card-more { background: var(--primary); color: #fff; box-shadow: 0 6px 16px rgba(30, 86, 214, 0.25); }
.slider-btn {
  position: absolute; top: 42%; width: 46px; height: 46px; border-radius: 50%;
  background: #fff; border: 1px solid var(--line); box-shadow: 0 6px 18px rgba(10,22,51,.12);
  cursor: pointer; font-size: 18px; color: var(--navy); z-index: 4;
  display: flex; align-items: center; justify-content: center; transition: all 0.25s;
}
.slider-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.slider-btn.prev { left: -22px; }
.slider-btn.next { right: -22px; }

/* ============ 公司简介（首页） ============ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: stretch; }
/* ---------- 企业介绍图：信封效果（图片插在白色信封里） ---------- */
.about-img {
  position: relative; height: 100%; min-height: 380px;
  padding-top: 18px; padding-bottom: 34px;   /* 上下留给信封 */
}
/* 图片：一张卡片，正常圆角显示 */
.about-img img {
  position: relative; z-index: 1;
  width: 100%; height: 100%; min-height: 320px; object-fit: cover; display: block;
  border-radius: var(--radius);
  box-shadow: 0 16px 40px rgba(16, 52, 128, 0.18);
}
/* 蓝色调罩（随图片圆角） */
.about-img::before {
  content: ""; position: absolute; left: 0; right: 0; top: 18px; bottom: 34px; z-index: 2;
  pointer-events: none; border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(29,85,198,0.28) 0%, rgba(29,85,198,0.16) 55%, rgba(16,52,128,0.26) 100%);
}
/* 白色信封：左右竖边 + 底部袋体，袋口上缘为 V 形（信封舌），整体压住图片下沿 */
.about-img .envelope {
  position: absolute; inset: 0; z-index: 3; pointer-events: none;
  border-top: 18px solid #fff;   /* 顶部白色包边 */
}
.about-img .envelope::before,
.about-img .envelope::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 16px; background: #fff;
}
.about-img .envelope::before { left: 0; }
.about-img .envelope::after { right: 0; }
.about-img .envelope .flap {
  position: absolute; left: 0; right: 0; bottom: 0; height: 34%;
  background: #fff;
  clip-path: polygon(0 0, 50% 46%, 100% 0, 100% 100%, 0 100%);
  box-shadow: 0 -6px 24px rgba(16, 52, 128, 0.10);
}
/* 信封舌的浅蓝折痕线 */
.about-img .envelope .flap::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 100%;
  clip-path: polygon(0 0, 50% 46%, 100% 0, 100% 2px, 50% calc(46% + 2px), 0 2px);
  background: linear-gradient(90deg, rgba(190, 214, 250, .9), rgba(150, 190, 245, .95), rgba(190, 214, 250, .9));
}
.about-txt {
  background: #fff; border: 1px solid #e8eef8; border-radius: var(--radius);
  box-shadow: 0 8px 26px rgba(20, 45, 110, 0.06);
  padding: 30px 34px 32px; height: fit-content;
}
.about-txt h2 { font-size: 30px; color: var(--navy); margin-bottom: 6px; }
.about-txt .sub { color: var(--primary); font-size: 14px; letter-spacing: 1px; margin-bottom: 20px; font-weight: 500; }
.about-txt p { color: #4b5563; margin-bottom: 14px; text-align: justify; }
.about-stats { display: flex; gap: 34px; margin: 26px 0 30px; }
.about-stats b { display: block; font-size: 30px; color: var(--primary); font-weight: 700; }
.about-stats span { font-size: 13px; color: var(--muted); }
.btn {
  display: inline-block; background: var(--primary); color: #fff; padding: 12px 34px;
  border-radius: 30px; font-size: 14px; transition: all 0.25s; border: 1px solid var(--primary); cursor: pointer;
}
.btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 10px 22px rgba(30, 86, 214, 0.3); }
.btn.ghost { background: transparent; color: var(--primary); }
.btn.ghost:hover { background: var(--primary); color: #fff; }

/* ============ 合作伙伴 ============ */
.partner-grid { display: grid; grid-template-columns: repeat(auto-fit, 240px); justify-content: center; gap: 20px; }
.partner-item {
  background: #fff; border: 1px solid var(--line); border-radius: 8px;
  padding: 22px 12px 16px; text-align: center; transition: all 0.3s;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  min-height: 130px;
}
.partner-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: #cdd9f5; }
.partner-logo {
  height: 52px; display: flex; align-items: center; justify-content: center;
  transition: all 0.3s; font-weight: 700; color: #9aa3b2;
  font-size: 15px; letter-spacing: 1px;
}
.partner-item:hover .partner-logo { filter: none; opacity: 1; color: var(--primary); }
.partner-name { font-size: 13px; color: #4b5563; }
.partner-item.placeholder { background: #fafbfd; border-style: dashed; }

/* ============ 页脚 ============ */
.site-footer { background: var(--navy); color: rgba(255, 255, 255, 0.75); margin-top: 0; }
.footer-main {
  display: flex; gap: 56px; padding: 64px 0 48px; align-items: flex-start;
}
.footer-nav { flex: 1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px 48px; align-content: flex-start; }
.fnav-group { min-width: 0; }
.fnav-group h4 a { color: #fff; transition: color 0.2s; }
.fnav-group h4 a:hover { color: var(--cyan); }
.footer-contact-col { flex-shrink: 0; width: 300px; max-width: 100%; }
.footer-main h4 { color: #fff; font-size: 16px; margin-bottom: 20px; font-weight: 600; position: relative; padding-bottom: 12px; }
.footer-main h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 24px; height: 2px; background: var(--cyan); }
.footer-about p { font-size: 13.5px; line-height: 1.9; margin-top: 14px; }
.footer-logo { display: flex; align-items: center; gap: 10px; }
.footer-logo .mark {
  width: 42px; height: 42px; border-radius: 8px; background: linear-gradient(135deg, var(--primary), var(--cyan));
  display: flex; align-items: center; justify-content: center; font-weight: 800; color: #fff; font-size: 15px;
}
.footer-logo b { color: #fff; font-size: 16px; display: block; }
.footer-logo span { font-size: 10px; color: rgba(255,255,255,.5); }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 13.5px; color: rgba(255, 255, 255, 0.65); transition: all 0.2s; }
.footer-links a:hover { color: var(--cyan); padding-left: 4px; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; font-size: 13.5px; align-items: flex-start; }
.footer-contact .ico { color: var(--cyan); flex-shrink: 0; margin-top: 3px; }
.footer-qr { display: flex; gap: 18px; margin-top: 18px; }
.footer-qr figure { text-align: center; }
.footer-qr img { width: 96px; height: 96px; border-radius: 6px; background: #fff; padding: 4px; }
.footer-qr figcaption { font-size: 12px; margin-top: 8px; color: rgba(255,255,255,.6); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 18px 0;
  font-size: 12.5px; color: rgba(255, 255, 255, 0.45);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
}
.footer-bottom a { color: rgba(255, 255, 255, 0.55); }
.footer-bottom a:hover { color: var(--cyan); }

/* ============ 子页 Banner + 面包屑 ============ */
.subhero {
  height: var(--subhero-h); position: relative; display: flex; align-items: center;
  color: #fff; overflow: hidden; background: var(--navy);
}
.subhero .bg {
  position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.55;
}
.subhero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(6, 14, 36, 0.85) 0%, rgba(10, 22, 51, 0.35) 70%);
}
.subhero .container { position: relative; z-index: 2; }
.subhero h1 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 700; }
.subhero h1::after { content: ""; display: block; width: 52px; height: 4px; background: var(--cyan); border-radius: 2px; margin-top: 14px; }
.subhero p { margin-top: 12px; color: rgba(255, 255, 255, 0.8); font-size: 15px; max-width: 640px; }
.breadcrumb { padding: 16px 0; font-size: 13px; color: var(--muted); background: #fff; border-bottom: 1px solid var(--line); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb b { color: var(--primary); font-weight: 500; }

/* ============ 关于页 Tabs ============ */
.about-tabs { display: flex; gap: 12px; flex-wrap: wrap; margin: -26px auto 0; position: relative; z-index: 3; }
.about-tabs button {
  padding: 12px 30px; border-radius: 6px; border: 1px solid var(--line); background: #fff;
  font-size: 15px; cursor: pointer; color: var(--text); transition: all 0.25s; font-weight: 500;
}
.about-tabs button.active { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(30,86,214,.25); }
.about-pane { display: none; animation: fadeIn 0.4s; }
.about-pane.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px);} to { opacity: 1; transform: none;} }
.prose { max-width: 900px; }
.prose h3 { color: var(--navy); font-size: 20px; margin: 30px 0 12px; padding-left: 12px; border-left: 4px solid var(--primary); }
.prose h3:first-child { margin-top: 0; }
.prose p { color: #4b5563; margin-bottom: 14px; text-align: justify; }
.prose ul { margin: 0 0 16px 4px; }
.prose ul li { position: relative; padding-left: 22px; margin-bottom: 8px; color: #4b5563; }
.prose ul li::before { content: ""; position: absolute; left: 2px; top: 11px; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); }
.milestones { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 26px; }
.milestone {
  background: var(--bg); border-radius: var(--radius); padding: 26px 24px; border-top: 3px solid var(--primary);
  transition: all 0.3s;
}
.milestone:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.milestone .year { font-size: 22px; font-weight: 700; color: var(--primary); }
.milestone .phase { font-size: 15px; font-weight: 600; color: var(--navy); margin: 4px 0 10px; }
.milestone p { font-size: 13.5px; color: var(--muted); }
.values { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 26px; }
.value-item { background: linear-gradient(160deg, #f0f4ff, #fff); border: 1px solid #dfe7fa; border-radius: 8px; padding: 20px 14px; text-align: center; }
.value-item b { display: block; color: var(--primary); font-size: 16px; margin-bottom: 6px; }
.value-item span { font-size: 12.5px; color: var(--muted); }
.partner-block { display: grid; grid-template-columns: 220px 1fr; gap: 30px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 22px; background: #fff; transition: box-shadow .3s; }
.partner-block:hover { box-shadow: var(--shadow); }
.partner-block .p-logo {
  background: var(--bg); border-radius: 8px; display: flex; align-items: center; justify-content: center;
  min-height: 130px; font-weight: 700; color: var(--primary); font-size: 17px; text-align: center; padding: 16px;
}
.partner-block h3 { color: var(--navy); margin-bottom: 10px; }
.partner-block p { font-size: 14px; color: #4b5563; margin-bottom: 8px; }

/* ============ 产品/方案列表页 ============ */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.filter-bar button {
  padding: 9px 22px; border-radius: 20px; border: 1px solid var(--line); background: #fff;
  font-size: 14px; cursor: pointer; color: var(--muted); transition: all 0.2s;
}
.filter-bar button.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.item-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; cursor: pointer; transition: all 0.3s; display: flex; flex-direction: column;
}
.item-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.item-card .img { aspect-ratio: 16/10; overflow: hidden; }
.item-card .img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.item-card:hover .img img { transform: scale(1.06); }
.item-card .body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.item-card h3 { font-size: 17px; color: var(--navy); margin-bottom: 8px; }
.item-card p { font-size: 13.5px; color: var(--muted); flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.item-card .more { color: var(--primary); font-size: 13px; margin-top: 14px; font-weight: 500; }

/* ============ 详情页 ============ */
.detail-wrap { display: grid; grid-template-columns: 0.9fr 1.4fr; gap: 48px; align-items: start; }
.detail-img img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; }
.detail-gallery { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 96px; }
.detail-gallery img {
  width: 100%; border-radius: var(--radius);
  box-shadow: 0 4px 14px rgba(20, 45, 110, 0.08); object-fit: contain; background: #fff;
}
.detail-info h1 { font-size: 27px; color: var(--navy); margin-bottom: 6px; }
.detail-info .en-name { color: var(--muted); font-size: 13px; letter-spacing: 0.5px; }
.detail-info .tagline {
  display: inline-block; margin: 16px 0; background: #eef3ff; color: var(--primary);
  padding: 6px 16px; border-radius: 20px; font-size: 13.5px; font-weight: 500;
}
.detail-info .summary { color: #4b5563; }
.detail-content { margin-top: 46px; }
.detail-content .prose { max-width: none; }
.feat-list { margin-top: 22px; display: flex; flex-direction: column; gap: 16px; }
.feat-box { border: 1px solid #e3eaf5; border-radius: 12px; padding: 18px 24px 20px; background: #fff; box-shadow: 0 2px 10px rgba(20,45,110,.04); }
.feat-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.feat-ico { width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex: none; }
.feat-ico svg { width: 18px; height: 18px; }
.feat-head h4 { margin: 0; font-size: 17.5px; font-weight: 700; color: #1d55c6; letter-spacing: 0.5px; }
.feat-body ul { margin: 0; padding: 0; list-style: none; counter-reset: featn; }
.feat-body ul li {
  counter-increment: featn; padding: 4px 0 4px 30px; position: relative;
  color: #4b5563; font-size: 14.5px; line-height: 1.8;
}
.feat-body ul li::before { content: counter(featn) "、"; position: absolute; left: 6px; color: #6b7a99; }
.feat-body p { margin: 0 0 8px; color: #4b5563; font-size: 14.5px; line-height: 1.85; }
.feat-body p:last-child { margin-bottom: 0; }
.feat-body.standalone { padding: 0; }
.models-box { background: var(--bg); border-radius: var(--radius); padding: 24px 26px; margin-top: 22px; }
.models-box h4 { color: var(--navy); margin-bottom: 12px; font-size: 15px; }
.models-box li { padding: 8px 0 8px 20px; position: relative; color: #4b5563; font-size: 14px; border-bottom: 1px dashed var(--line); }
.models-box li:last-child { border-bottom: none; }
.models-box li::before { content: "▸"; position: absolute; left: 0; color: var(--primary); }

/* ============ 搜索 / 空状态 ============ */
.empty-state { text-align: center; padding: 90px 0 110px; color: var(--muted); }
.empty-state .icon { font-size: 52px; margin-bottom: 18px; opacity: 0.5; }
.empty-state h3 { color: var(--navy); font-size: 20px; margin-bottom: 10px; }
.search-group { margin-bottom: 36px; }
.search-group h3 { color: var(--navy); font-size: 18px; margin-bottom: 16px; padding-left: 12px; border-left: 4px solid var(--primary); }
.result-item { padding: 18px 20px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 14px; cursor: pointer; transition: all 0.25s; }
.result-item:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.result-item h4 { color: var(--navy); font-size: 16px; margin-bottom: 6px; }
.result-item p { font-size: 13.5px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.result-item mark { background: #fff3bf; color: inherit; padding: 0 2px; }

/* ============ 招聘 / 新闻页 ============ */
.news-tabs { display: flex; gap: 12px; margin-bottom: 30px; }
.news-tabs button { padding: 10px 26px; border-radius: 6px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-size: 14.5px; color: var(--muted); }
.news-tabs button.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ============ 回到顶部 ============ */
.back-top {
  position: fixed; right: 26px; bottom: 30px; width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff; border: none; cursor: pointer; font-size: 17px;
  box-shadow: 0 8px 22px rgba(30, 86, 214, 0.35); opacity: 0; visibility: hidden;
  transition: all 0.3s; z-index: 90;
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--primary-dark); }

/* ============ 加载与错误 ============ */
.loading { text-align: center; padding: 70px 0; color: var(--muted); font-size: 14px; }
.loading .spin {
  width: 34px; height: 34px; border: 3px solid #dfe7fa; border-top-color: var(--primary);
  border-radius: 50%; margin: 0 auto 14px; animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.load-error { text-align: center; padding: 60px 20px; color: var(--muted); }
.load-error button { margin-top: 14px; }

/* ============ 响应式 ============ */
@media (max-width: 1100px) {
  .prod-card { flex-basis: 33.33%; }
  .values { grid-template-columns: repeat(3, 1fr); }
  .footer-main { flex-wrap: wrap; gap: 40px; }  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 40px; }
}
@media (max-width: 900px) {
  .menu-btn {
    display: flex; flex-direction: column; gap: 5px; background: none; border: none;
    cursor: pointer; padding: 6px; margin-left: auto;
  }
  .menu-btn span { width: 24px; height: 2.5px; background: var(--navy); border-radius: 2px; transition: all 0.3s; }
  .nav {
    position: fixed; top: 76px; left: 0; right: 0; bottom: 0; background: #fff;
    flex-direction: column; align-items: stretch; padding: 16px 6%;
    transform: translateX(100%); transition: transform 0.3s; overflow-y: auto; margin-left: 0;
  }
  .nav.open { transform: none; }
  .nav > li > a { padding: 15px 4px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav > li > a::after { display: none; }
  .dropdown {
    position: static; transform: none; opacity: 1; visibility: visible; box-shadow: none;
    border-top: none; padding: 0 0 8px 16px; display: none; min-width: 0;
  }
  .nav > li:hover .dropdown { display: block; }
  .nav > li.dd-open .dropdown { display: block; }
  .header-tools { margin-left: 0; }
  .hero { height: calc(100vh - 66px); min-height: 460px; }
  .hero-stage { perspective: 1000px; }
  .hero-slide { width: 82vw; height: 52vh; }
  .hero-slide.is-prev { opacity: 0.4; transform: translate(-50%, -50%) translateX(-62%) rotateY(18deg) translateZ(-200px) scale(0.9); }
  .hero-slide.is-next { opacity: 0.4; transform: translate(-50%, -50%) translateX(62%) rotateY(-18deg) translateZ(-200px) scale(0.9); }
  .hero-arrow { width: 40px; height: 40px; }
  .hero-arrow.prev { left: 12px; }
  .hero-arrow.next { right: 12px; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-img { min-height: 0; padding-top: 12px; padding-bottom: 26px; }
  .about-img img { height: 230px; min-height: 0; }
  .about-img::before { top: 12px; bottom: 26px; }
  .about-img .envelope { border-top-width: 12px; }
  .about-img .envelope::before, .about-img .envelope::after { width: 12px; }
  .about-img .envelope .flap { height: 30%; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-card { flex-basis: 50%; }
  .partner-grid { grid-template-columns: repeat(auto-fit, 200px); }
  .milestones { grid-template-columns: 1fr; }
  .detail-wrap { grid-template-columns: 1fr; gap: 30px; }
  .detail-gallery { position: static; }
  .partner-block { grid-template-columns: 1fr; }
  .slider-btn.prev { left: 6px; } .slider-btn.next { right: 6px; }
}
@media (max-width: 600px) {
  .section { padding: 56px 0; }
  .prod-card { flex-basis: 100%; }
  .card-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
  .values { grid-template-columns: repeat(2, 1fr); }
  .footer-main { flex-direction: column; gap: 30px; }
  .about-stats { gap: 22px; flex-wrap: wrap; }
  :root { --subhero-h: 240px; }
}

/* ---------- 创始人：照片 + 横向履历时间轴 ---------- */
.founder-head { display: flex; gap: 30px; align-items: flex-start; }
.founder-photo { width: 168px; height: 200px; object-fit: cover; border-radius: 10px; flex: none; box-shadow: 0 8px 24px rgba(15,34,80,.14); }
.founder-head .prose { flex: 1; }
.ftl { position: relative; margin: 46px 0 6px; }
.ftl-line { position: absolute; left: 1%; right: 1.4%; top: 50%; height: 2px; background: #c5d2e8; }
.ftl-line::after { content: ""; position: absolute; right: -2px; top: -4px; width: 0; height: 0; border-left: 9px solid #c5d2e8; border-top: 5px solid transparent; border-bottom: 5px solid transparent; }
.ftl-grid { display: grid; grid-template-columns: repeat(4, 1fr); position: relative; }
.ftl-item { position: relative; min-height: 212px; padding: 0 10px; text-align: center; }
.ftl-dot { position: absolute; left: 50%; top: 50%; width: 13px; height: 13px; margin: -6.5px 0 0 -6.5px; border-radius: 50%; background: #44618f; box-shadow: 0 0 0 4px #fff; }
.ftl-item.last .ftl-dot { background: #d6453d; }
.ftl-year { position: absolute; left: 0; right: 0; top: calc(50% + 13px); font-weight: 700; font-size: 15px; color: #44618f; }
.ftl-item.last .ftl-year { color: #d6453d; }
.ftl-card { position: absolute; left: 10px; right: 10px; background: #44618f; color: #fff; border-radius: 6px; padding: 10px 12px; line-height: 1.5; }
.ftl-card b { display: block; font-size: 13.5px; margin-bottom: 2px; }
.ftl-card span { font-size: 12.5px; opacity: .92; }
.ftl-card.below { top: calc(50% + 44px); }
.ftl-card.above { bottom: calc(50% + 44px); background: #3a5480; }
.ftl-item.last .ftl-card { background: #d6453d; }
@media (max-width: 900px) {
  .founder-head { flex-direction: column; }
  .founder-photo { width: 140px; height: 168px; }
  .ftl { margin-top: 30px; }
  .ftl-line { display: none; }
  .ftl-grid { display: block; }
  .ftl-item { min-height: 0; padding: 0 0 18px 26px; text-align: left; }
  .ftl-dot { left: 2px; top: 5px; margin: 0; box-shadow: 0 0 0 3px #fff; }
  .ftl-year { position: static; display: block; font-size: 14px; margin-bottom: 4px; }
  .ftl-card { position: static; display: inline-block; text-align: left; }
}

/* ---------- 首页企业概况：愿景/基座双卡片 ---------- */
.about-vision { display: flex; flex-direction: column; gap: 30px; }
.v-card { position: relative; padding: 2px 0 0 22px; }
.v-card::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 4px; border-radius: 2px; background: linear-gradient(180deg, #2a63d4, #6ea3ff); }
.v-head { display: flex; align-items: center; gap: 13px; margin-bottom: 16px; }
.v-badge { width: 42px; height: 42px; border-radius: 11px; background: linear-gradient(135deg, #2a63d4, #173f96); color: #fff; display: flex; align-items: center; justify-content: center; flex: none; box-shadow: 0 6px 14px rgba(29,85,198,.32); }
.v-badge svg { width: 22px; height: 22px; }
.v-head h3 { font-size: 19px; font-weight: 700; color: #12306e; margin: 0; letter-spacing: 1.5px; }
.v-words { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; text-align: center; max-width: 340px; }
.v-words span { background: #eef3fb; border-radius: 10px; padding: 11px 0 12px; font-size: 22px; font-weight: 800; color: #1d55c6; letter-spacing: 6px; text-indent: 6px; }
.v-card > p { margin: 0; color: #45516b; line-height: 1.95; font-size: 15px; text-align: justify; }
@media (max-width: 900px) {
  .about-vision { gap: 22px; }
  .v-words { gap: 10px 14px; }
  .v-words span { font-size: 19px; padding: 9px 0 10px; }
}

/* ============ SEO 静态内容（视觉隐藏，保留给搜索引擎抓取） ============ */
.seo-content {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0; padding: 0; margin: -1px;
}