/* ==========================================================
   珞喻集团官网 · 全站样式
   ========================================================== */
:root {
  --blue: #1667e0;
  --blue-deep: #0d4fc0;
  --blue-light: #eaf2ff;
  --navy: #0a1f44;
  --navy-2: #0d2a5c;
  --ink: #17233b;
  --text: #4b5a72;
  --muted: #8291a8;
  --bg: #f5f8fc;
  --line: #e6ecf5;
  --grad: linear-gradient(135deg, #2ea0ff 0%, #1156e5 100%);
  --shadow: 0 10px 40px rgba(13, 42, 92, .10);
  --radius: 14px;
  --header-h: 76px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s; }
ul { list-style: none; }
button { font-family: inherit; }

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

/* ---------------- Header ---------------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h);
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s;
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(10, 31, 68, .08); border-color: var(--line); }
.header-inner { display: flex; align-items: center; height: var(--header-h); gap: 28px; }
.brand img { height: 44px; width: auto; }
.main-nav { display: flex; gap: 6px; margin-left: auto; }
.main-nav a {
  position: relative; padding: 8px 16px; font-size: 15.5px; font-weight: 500;
  color: var(--ink); border-radius: 8px;
}
.main-nav a:hover { color: var(--blue); }
.main-nav a.active { color: var(--blue); font-weight: 600; }
.main-nav a.active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 3px; border-radius: 3px; background: var(--grad);
}
.header-phone {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; color: var(--blue); font-size: 16px;
  padding: 9px 18px; border: 1.5px solid rgba(22, 103, 224, .35); border-radius: 999px;
  white-space: nowrap;
}
.header-phone:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 10px; }
.nav-toggle span { display: block; width: 24px; height: 2.5px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: .3s; }

/* ---------------- Banner ---------------- */
.banner { position: relative; height: 88vh; min-height: 600px; max-height: 880px; overflow: hidden; background: var(--navy); }
.banner-slide {
  position: absolute; inset: 0; opacity: 0; overflow: hidden;
  transition: opacity 1.1s ease;
}
.banner-slide.active { opacity: 1; z-index: 1; }
.slide-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transform: scale(1); will-change: transform;
}
.banner-slide.active .slide-bg { animation: kenburns 7s ease-out forwards; }
@keyframes kenburns { from { transform: scale(1); } to { transform: scale(1.13); } }
.banner-slide::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background:
    radial-gradient(120% 90% at 82% 18%, rgba(46, 160, 255, .20), transparent 56%),
    linear-gradient(100deg, rgba(7, 22, 51, .88) 0%, rgba(9, 31, 68, .62) 48%, rgba(9, 31, 68, .28) 100%);
}
.banner-slide::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(0deg, rgba(5, 16, 40, .58) 0%, rgba(5, 16, 40, 0) 42%);
}
.banner-caption {
  position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; justify-content: center;
  color: #fff; padding-top: var(--header-h);
}
.banner-caption .container { width: min(1200px, 90%); }
.banner-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; letter-spacing: 3px; color: #bcd6ff;
  margin-bottom: 22px; opacity: 0; transform: translateY(24px);
}
.banner-tag::before { content: ""; width: 36px; height: 2px; background: #4d9bff; }
.banner-title {
  font-size: clamp(34px, 5vw, 60px); font-weight: 800; line-height: 1.22;
  letter-spacing: 1px; opacity: 0; transform: translateY(28px);
}
.banner-sub {
  margin-top: 18px; font-size: clamp(15px, 1.6vw, 20px); color: #d7e5fb;
  letter-spacing: 1px; opacity: 0; transform: translateY(28px);
}
.banner-btns { margin-top: 40px; display: flex; gap: 16px; opacity: 0; transform: translateY(28px); }
.banner-slide.active .banner-tag,
.banner-slide.active .banner-title,
.banner-slide.active .banner-sub,
.banner-slide.active .banner-btns { animation: rise .8s ease forwards; }
.banner-slide.active .banner-sub { animation-delay: .15s; }
.banner-slide.active .banner-title { animation-delay: .08s; }
.banner-slide.active .banner-tag { animation-delay: 0s; }
.banner-slide.active .banner-btns { animation-delay: .28s; }
@keyframes rise { to { opacity: 1; transform: translateY(0); } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 34px; border-radius: 999px; font-size: 15.5px; font-weight: 600;
  cursor: pointer; border: 0; transition: .25s;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 8px 24px rgba(21, 101, 224, .38); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(21, 101, 224, .5); }
.btn-ghost { border: 1.5px solid rgba(255, 255, 255, .65); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .14); }
.btn-outline { border: 1.5px solid var(--blue); color: var(--blue); background: #fff; }
.btn-outline:hover { background: var(--blue); color: #fff; }

.banner-dots { position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%); display: flex; gap: 11px; z-index: 3; }
.banner-dots button {
  width: 36px; height: 4px; border: 0; border-radius: 4px;
  background: rgba(255, 255, 255, .32); cursor: pointer; transition: .35s;
}
.banner-dots button:hover { background: rgba(255, 255, 255, .6); }
.banner-dots button.active { background: var(--grad); width: 58px; box-shadow: 0 2px 10px rgba(46,160,255,.6); }
.banner-counter {
  position: absolute; right: 44px; bottom: 26px; z-index: 3;
  display: flex; align-items: center; gap: 10px; color: #fff;
  font-variant-numeric: tabular-nums; line-height: 1;
}
.banner-counter span { font-size: 24px; font-weight: 700; letter-spacing: 2px; }
.banner-counter span:last-child { color: rgba(255, 255, 255, .45); font-size: 15px; letter-spacing: 1px; }
.banner-counter i { width: 36px; height: 2px; background: rgba(255, 255, 255, .38); }
.banner-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 46px; height: 46px; border-radius: 50%; border: 1px solid rgba(255,255,255,.4);
  background: rgba(10, 31, 68, .25); color: #fff; font-size: 18px; cursor: pointer; transition: .25s;
}
.banner-arrow:hover { background: rgba(21, 101, 224, .8); }
.banner-arrow.prev { left: 26px; } .banner-arrow.next { right: 26px; }

/* ---------------- Section base ---------------- */
.section { padding: 92px 0; }
.section.alt { background: var(--bg); }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.sec-head.left { text-align: left; margin-left: 0; }
.sec-eyebrow {
  display: inline-block; font-size: 13.5px; font-weight: 700; letter-spacing: 3px;
  color: var(--blue); text-transform: uppercase; margin-bottom: 12px;
}
.sec-title { font-size: clamp(26px, 3.2vw, 38px); font-weight: 800; color: var(--ink); line-height: 1.3; }
.sec-desc { margin-top: 16px; color: var(--text); font-size: 16px; }

/* ---------------- 首页：核心功能区 ---------------- */
.core-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 24px; }
.core-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 40px 42px; position: relative; overflow: hidden; transition: .3s;
}
.core-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.core-card.ai {
  background: linear-gradient(135deg, #0b2a66 0%, #1156e5 78%, #2ea0ff 130%);
  color: #fff; border: 0; display: flex; flex-direction: column; justify-content: center;
}
.core-card.ai::after {
  content: ""; position: absolute; right: -70px; top: -70px; width: 260px; height: 260px;
  border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,.16), transparent 70%);
}
.core-kicker { font-size: 13px; letter-spacing: 2.5px; font-weight: 700; color: var(--blue); margin-bottom: 12px; }
.core-card.ai .core-kicker { color: #9cc4ff; }
.core-name { font-size: 26px; font-weight: 800; margin-bottom: 10px; }
.core-desc { color: var(--text); font-size: 15.5px; }
.core-card.ai .core-desc { color: #d9e7fd; }
.ai-stats { display: flex; gap: 0; margin: 26px 0 30px; }
.ai-stats div { flex: 1; text-align: center; border-right: 1px solid rgba(255,255,255,.22); padding: 0 8px; }
.ai-stats div:last-child { border-right: 0; }
.ai-stats b { display: block; font-size: 30px; font-weight: 800; color: #fff; }
.ai-stats span { font-size: 13px; color: #b9d2f7; }

.news-card { display: flex; flex-direction: column; }
.news-list { flex: 1; overflow: hidden; position: relative; margin-top: 6px; }
.news-list ul { transition: transform .5s ease; }
.news-list li {
  display: flex; align-items: baseline; gap: 14px; padding: 13px 0;
  border-bottom: 1px dashed var(--line); font-size: 15px; color: var(--text);
}
.news-list li:hover { color: var(--blue); }
.news-date { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.news-more { margin-top: 16px; font-size: 14px; color: var(--blue); font-weight: 600; }

.consult-card {
  background: linear-gradient(150deg, #10294f, #0a1f44); color: #fff; border: 0;
  display: flex; flex-direction: column; justify-content: center;
}
.consult-card .core-kicker { color: #7fb0f5; }
.consult-en { font-size: 13px; color: #6f89b3; margin-top: 8px; line-height: 1.6; }
.consult-phone { display: flex; align-items: center; gap: 12px; margin-top: 26px; }
.consult-phone .num { font-size: 30px; font-weight: 800; letter-spacing: 1px; }

.tri-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 24px; }
.tri-item {
  background: var(--blue-light); border-radius: var(--radius); padding: 26px 14px; text-align: center;
  border: 1px solid #dbe7fb; transition: .3s;
}
.tri-item:hover { background: #fff; box-shadow: var(--shadow); }
.tri-item b { display: block; font-size: 25px; font-weight: 800; white-space: nowrap; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tri-item span { display: block; margin-top: 4px; font-size: 14.5px; font-weight: 600; color: var(--ink); }
.tri-item p { font-size: 12.5px; color: var(--muted); margin-top: 4px; line-height: 1.5; }

/* ---------------- 首页：业务版图 ---------------- */
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.biz-card {
  position: relative; border-radius: var(--radius); padding: 40px 30px 34px;
  background: #fff; border: 1px solid var(--line); overflow: hidden; transition: .3s;
}
.biz-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--grad); opacity: 0; transition: .3s;
}
.biz-card:hover { box-shadow: var(--shadow); transform: translateY(-5px); }
.biz-card:hover::before { opacity: 1; }
.biz-icon {
  width: 58px; height: 58px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  font-size: 26px; background: var(--blue-light); margin-bottom: 20px;
}
.biz-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.biz-card p { font-size: 14.5px; color: var(--text); }
.biz-link { display: inline-block; margin-top: 18px; font-size: 14px; font-weight: 600; color: var(--blue); }

/* ---------------- 首页：关于速览 ---------------- */
.about-strip { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.about-strip .photo { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.about-strip .photo img { width: 100%; height: 100%; object-fit: cover; }
.about-points { margin-top: 24px; display: grid; gap: 14px; }
.about-points li { display: flex; gap: 12px; font-size: 15.5px; color: var(--text); }
.about-points li::before { content: "◆"; color: var(--blue); font-size: 13px; line-height: 1.9; }

/* ---------------- CTA band ---------------- */
.cta-band { background: linear-gradient(120deg, #0a1f44 20%, #1156e5 110%); color: #fff; padding: 70px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; }
.cta-inner p { color: #c4d8f8; margin-top: 10px; }

/* ---------------- Page hero（子页头部） ---------------- */
.page-hero {
  position: relative; padding: calc(var(--header-h) + 74px) 0 78px;
  background-size: cover; background-position: center 30%; color: #fff;
}
.page-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(7,22,51,.88), rgba(10,36,82,.62)); }
.page-hero .container { position: relative; }
.page-hero h1 { font-size: clamp(30px, 4vw, 46px); font-weight: 800; letter-spacing: 1px; }
.page-hero p { margin-top: 12px; color: #cdddf6; font-size: 16.5px; max-width: 640px; }
.crumb { margin-top: 18px; font-size: 13.5px; color: #9db8e2; }
.crumb a:hover { color: #fff; }

/* ---------------- 子页布局：左侧导航 + 内容 ---------------- */
.layout { display: grid; grid-template-columns: 250px 1fr; gap: 48px; align-items: start; padding: 70px 0 100px; }
.side-nav { position: sticky; top: calc(var(--header-h) + 24px); background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: 0 4px 20px rgba(13,42,92,.05); }
.side-nav a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 22px; font-size: 15.5px; font-weight: 500; color: var(--ink);
  border-left: 3px solid transparent; border-bottom: 1px solid var(--line); transition: .2s;
}
.side-nav a:last-child { border-bottom: 0; }
.side-nav a::after { content: "›"; color: var(--muted); font-size: 18px; transition: .2s; }
.side-nav a:hover { color: var(--blue); background: #f7faff; }
.side-nav a.active { color: var(--blue); background: var(--blue-light); border-left-color: var(--blue); font-weight: 700; }
.page-block { margin-bottom: 84px; scroll-margin-top: calc(var(--header-h) + 20px); }
.page-block:last-child { margin-bottom: 0; }
.block-head { margin-bottom: 30px; }
.block-head h2 { font-size: 27px; font-weight: 800; display: flex; align-items: center; gap: 14px; }
.block-head h2::before { content: ""; width: 5px; height: 26px; border-radius: 3px; background: var(--grad); }
.block-head p { margin-top: 10px; color: var(--text); font-size: 15.5px; }

.para { color: var(--text); font-size: 15.5px; text-align: justify; }
.para + .para { margin-top: 14px; }
.para b { color: var(--ink); }

/* 卡片组 */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.info-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: .3s; position: relative;
}
.info-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.info-card .tag {
  display: inline-block; font-size: 12.5px; font-weight: 700; color: var(--blue);
  background: var(--blue-light); border-radius: 6px; padding: 3px 10px; margin-bottom: 14px; letter-spacing: 1px;
}
.info-card h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 10px; }
.info-card p, .info-card li { font-size: 14.5px; color: var(--text); }
.info-card ul { display: grid; gap: 8px; }
.info-card ul li { padding-left: 16px; position: relative; }
.info-card ul li::before { content: "·"; position: absolute; left: 2px; color: var(--blue); font-weight: 800; }

.chips { display: flex; flex-wrap: wrap; gap: 12px; }
.chip {
  padding: 11px 22px; background: #fff; border: 1px solid var(--line); border-radius: 999px;
  font-size: 14.5px; color: var(--ink); font-weight: 500; transition: .25s;
}
.chip:hover, .chip.hot { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 6px 18px rgba(21,101,224,.3); }

/* 时间线 */
.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(#2ea0ff, #1156e5); }
.timeline-item { position: relative; padding: 0 0 34px 26px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: ""; position: absolute; left: -30px; top: 7px; width: 18px; height: 18px;
  border-radius: 50%; background: #fff; border: 4px solid var(--blue); box-shadow: 0 0 0 4px var(--blue-light);
}
.timeline-item .year { font-size: 24px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.timeline-item h3 { font-size: 17px; font-weight: 700; margin: 4px 0 6px; }
.timeline-item p { font-size: 14.5px; color: var(--text); max-width: 760px; }

/* 高管 */
.exec-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 30px; transition: .3s; }
.exec-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.exec-avatar {
  width: 96px; height: 96px; border-radius: 50%; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 800; color: #fff; background: var(--grad); margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(21,101,224,.32);
}
.exec-avatar img { width: 100%; height: 100%; object-fit: cover; object-position: center 20%; }
.exec-card h3 { font-size: 19px; font-weight: 800; }
.exec-role { font-size: 14px; color: var(--blue); font-weight: 600; margin: 4px 0 12px; }
.exec-card p { font-size: 14px; color: var(--text); }
.exec-titles { margin-top: 10px; display: grid; gap: 6px; }
.exec-titles span { font-size: 13.5px; color: var(--muted); padding-left: 14px; position: relative; }
.exec-titles span::before { content: "·"; position: absolute; left: 0; color: var(--blue); font-weight: 800; }

/* 企业文化 */
.culture-card { text-align: center; padding: 44px 28px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: .3s; }
.culture-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.culture-card .zh { font-size: 15px; font-weight: 700; color: var(--blue); letter-spacing: 4px; }
.culture-card h3 { font-size: 22px; font-weight: 800; margin: 10px 0 12px; }
.culture-card p { font-size: 14.5px; color: var(--text); }

/* 荣誉 */
.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.honor-item {
  display: flex; align-items: center; gap: 16px; background: #fff;
  border: 1px solid var(--line); border-radius: 12px; padding: 22px 24px; transition: .3s;
}
.honor-item:hover { box-shadow: var(--shadow); }
.honor-item .medal { font-size: 26px; }
.honor-item span { font-size: 15px; font-weight: 600; color: var(--ink); line-height: 1.5; }

/* 招聘 */
.job-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 20px; }
.job-head {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 24px 30px; background: #fff; border: 0; cursor: pointer; text-align: left; transition: .2s;
}
.job-head:hover { background: #f7faff; }
.job-head h3 { font-size: 18px; font-weight: 700; }
.job-head .arrow { font-size: 20px; color: var(--blue); transition: .3s; }
.job-card.open .job-head .arrow { transform: rotate(90deg); }
.job-body { max-height: 0; overflow: hidden; transition: max-height .45s ease; }
.job-body-inner { padding: 4px 30px 30px; border-top: 1px dashed var(--line); }
.job-body h4 { font-size: 15.5px; color: var(--blue); margin: 18px 0 8px; font-weight: 700; }
.job-body p, .job-body li { font-size: 14.5px; color: var(--text); }
.job-body ol, .job-body ul { padding-left: 20px; list-style: none; display: grid; gap: 5px; }
.job-body ol li::before { content: counter(list-item) "、"; color: var(--blue); font-weight: 600; }
.job-body ul.ji li::before { content: "（" counter(list-item) "）"; color: var(--blue); font-weight: 600; }
.job-tip {
  margin-top: 22px; padding: 20px 26px; border-radius: 12px;
  background: linear-gradient(120deg, var(--blue-light), #f5f9ff); border: 1px solid #d5e4fb;
  font-size: 15px; color: var(--ink);
}
.job-tip b { color: var(--blue); font-size: 17px; }

/* 画廊 */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 30px; }
.gallery figure { position: relative; border-radius: 12px; overflow: hidden; aspect-ratio: 4/3; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.gallery figure:hover img { transform: scale(1.06); }
.gallery figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 16px 12px;
  background: linear-gradient(transparent, rgba(7, 22, 51, .78)); color: #fff; font-size: 14px; font-weight: 600;
}

/* FAQ */
.faq-cats { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.faq-cat {
  padding: 9px 20px; border-radius: 999px; border: 1px solid var(--line); background: #fff;
  font-size: 14px; cursor: pointer; color: var(--text); font-weight: 500; transition: .25s;
}
.faq-cat.active, .faq-cat:hover { background: var(--grad); color: #fff; border-color: transparent; }
.faq-group { margin-bottom: 34px; scroll-margin-top: calc(var(--header-h) + 20px); }
.faq-group > h3 { font-size: 20px; font-weight: 800; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.faq-group > h3::before { content: ""; width: 5px; height: 20px; border-radius: 3px; background: var(--grad); }
.faq-item { border: 1px solid var(--line); border-radius: 12px; background: #fff; margin-bottom: 12px; overflow: hidden; }
.faq-q {
  width: 100%; background: none; border: 0; cursor: pointer; text-align: left;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 24px; font-size: 15.5px; font-weight: 600; color: var(--ink);
}
.faq-q:hover { color: var(--blue); }
.faq-q .sym { color: var(--blue); font-weight: 800; transition: .3s; flex-shrink: 0; }
.faq-item.open .faq-q .sym { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a-inner { padding: 0 24px 20px; font-size: 14.5px; color: var(--text); border-top: 1px dashed var(--line); padding-top: 14px; }
.faq-q-list { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 26px; }
.faq-q-list li { padding: 7px 0; font-size: 14.5px; color: var(--text); display: flex; gap: 10px; }
.faq-q-list li::before { content: "▶"; font-size: 11px; color: var(--blue); margin-top: 5px; }
.faq-note { margin-top: 14px; font-size: 13.5px; color: var(--muted); }

/* 下载中心 */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 30px; }
.dl-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 28px;
  text-align: center; transition: .3s;
}
.dl-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.dl-card .ico { font-size: 40px; }
.dl-card h3 { margin: 14px 0 6px; font-size: 18px; }
.dl-card p { font-size: 13.5px; color: var(--muted); margin-bottom: 20px; }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-bottom: 48px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 26px; text-align: center; transition: .3s; }
.contact-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.contact-card .ico { width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%; background: var(--blue-light); display: flex; align-items: center; justify-content: center; font-size: 24px; }
.contact-card h3 { font-size: 16px; margin-bottom: 6px; }
.contact-card p { font-size: 14.5px; color: var(--text); word-break: break-all; }
.contact-photo { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.contact-photo img { width: 100%; height: 440px; object-fit: cover; object-position: center 68%; }

/* ---------------- Footer ---------------- */
.site-footer { background: var(--navy); color: #a9bdd9; }
.footer-main { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 44px; padding: 68px 0 50px; }
.footer-brand img { height: 46px; width: auto; margin-bottom: 18px; filter: brightness(0) invert(1); opacity: .95; }
.footer-brand p { font-size: 14px; line-height: 1.9; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 20px; font-weight: 700; }
.footer-col ul { display: grid; gap: 11px; }
.footer-col a, .footer-col li { font-size: 14px; color: #a9bdd9; }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; gap: 10px; }
.footer-contact .ic { flex-shrink: 0; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 22px 0; font-size: 13px; color: #7488a8; text-align: center; }

/* 回到顶部 */
.back-top {
  position: fixed; right: 26px; bottom: 30px; z-index: 900;
  width: 46px; height: 46px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--grad); color: #fff; font-size: 18px; box-shadow: 0 8px 22px rgba(21,101,224,.4);
  opacity: 0; visibility: hidden; transition: .3s;
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { transform: translateY(-3px); }

/* 入场动画 */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .core-grid, .grid-2, .about-strip { grid-template-columns: 1fr; }
  .biz-grid { grid-template-columns: 1fr 1fr; }
  .grid-4, .contact-grid { grid-template-columns: 1fr 1fr; }
  .grid-3, .honor-grid, .dl-grid { grid-template-columns: 1fr 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .layout { grid-template-columns: 1fr; gap: 30px; }
  .side-nav { position: static; display: flex; overflow-x: auto; border-radius: 999px; padding: 4px; }
  .side-nav a { border-left: 0; border-bottom: 0; white-space: nowrap; border-radius: 999px; padding: 10px 20px; }
  .side-nav a::after { display: none; }
  .side-nav a.active { border-radius: 999px; }
  .header-phone span.txt { display: none; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  .brand img { height: 36px; }
  .nav-toggle { display: block; margin-left: auto; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; z-index: 999;
    flex-direction: column; gap: 0; background: #fff; margin-left: 0;
    box-shadow: 0 20px 40px rgba(10,31,68,.12);
    max-height: 0; overflow: hidden; transition: max-height .4s ease;
  }
  .main-nav.open { max-height: 460px; }
  .main-nav a { padding: 15px 6%; border-bottom: 1px solid var(--line); border-radius: 0; }
  .main-nav a.active::after { display: none; }
  .header-phone { display: none; }
  .banner { height: 78vh; min-height: 480px; }
  .section { padding: 60px 0; }
  .core-card { padding: 30px 24px; }
  .biz-grid, .grid-3, .grid-4, .honor-grid, .dl-grid, .contact-grid, .tri-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 30px; padding: 50px 0 36px; }
  .banner-arrow { display: none; }
  .banner-counter { display: none; }
  .ai-stats b { font-size: 24px; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .cta-inner { justify-content: center; text-align: center; }
  .contact-photo img { height: 260px; }
}