/* 四川三沐一科技官网 - 全站样式 */
:root {
  --primary: #0b57d0;
  --primary-dark: #083a8c;
  --accent: #ff7a1a;
  --ink: #1a2233;
  --ink-soft: #4a5568;
  --bg: #f6f8fc;
  --card: #ffffff;
  --line: #e3e9f4;
  --radius: 14px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* 顶部导航 */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary) 0%, #2f86ff 60%, var(--accent) 130%);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800; letter-spacing: .5px;
}
.nav-links { display: flex; gap: 30px; font-size: 15.5px; font-weight: 500; }
.nav-links a { color: var(--ink-soft); transition: color .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-cta {
  background: var(--primary); color: #fff !important;
  padding: 9px 20px; border-radius: 99px; font-size: 14.5px;
  transition: background .2s;
}
.nav-cta:hover { background: var(--primary-dark); }

/* Hero */
.hero {
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(255,122,26,.14), transparent 60%),
    radial-gradient(700px 420px at 8% 110%, rgba(11,87,208,.12), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, #f2f6ff 100%);
  padding: 84px 0 72px;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: #eaf1ff; color: var(--primary);
  border: 1px solid #cfdfff;
  padding: 6px 16px; border-radius: 99px;
  font-size: 13.5px; font-weight: 600; margin-bottom: 22px;
}
.hero h1 { font-size: 42px; line-height: 1.28; letter-spacing: 1px; }
.hero h1 .hl { color: var(--primary); }
.hero p.lead { margin-top: 18px; font-size: 17.5px; color: var(--ink-soft); max-width: 560px; }
.hero-actions { margin-top: 30px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 10px;
  font-size: 15.5px; font-weight: 600; transition: all .2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { border: 1.5px solid var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.hero-badges { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 10px; }
.badge {
  background: #fff; border: 1px solid var(--line); border-radius: 99px;
  padding: 7px 16px; font-size: 13.5px; color: var(--ink-soft);
}
.hero-figure {
  background: #fff; border: 1px solid var(--line); border-radius: 18px;
  padding: 14px; box-shadow: 0 24px 60px -30px rgba(11,87,208,.35);
  transform: rotate(1.5deg);
}
.hero-figure img { border-radius: 10px; }
.hero-figure figcaption { text-align: center; font-size: 13px; color: var(--ink-soft); padding-top: 10px; }

/* 数据条 */
.stats { padding: 8px 0 64px; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 20px; text-align: center;
}
.stat b { display: block; font-size: 32px; color: var(--primary); }
.stat span { font-size: 14px; color: var(--ink-soft); }

/* 通用 section */
section.block { padding: 70px 0; }
.section-head { text-align: center; margin-bottom: 44px; }
.section-head .kicker {
  color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: 3px;
}
.section-head h2 { font-size: 32px; margin-top: 8px; }
.section-head p { color: var(--ink-soft); margin-top: 12px; max-width: 680px; margin-left: auto; margin-right: auto; }

/* 服务 */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px -22px rgba(11,87,208,.35); }
.card .icon {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 16px;
  background: #eaf1ff; display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.card h3 { font-size: 18.5px; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--ink-soft); }
.card ul { margin-top: 10px; padding-left: 18px; font-size: 14px; color: var(--ink-soft); }
.card ul li { margin: 4px 0; }

/* 系统品牌 */
.sys-band {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff; border-radius: 20px; padding: 46px 40px;
}
.sys-band h2 { font-size: 26px; text-align: center; }
.sys-band p.sub { text-align: center; opacity: .85; margin-top: 10px; font-size: 15px; }
.sys-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 28px; }
.sys-tag {
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.28);
  padding: 10px 22px; border-radius: 12px; font-size: 15px; font-weight: 600;
}

/* 案例 */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-cat { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.case-list { font-size: 14px; color: var(--ink-soft); line-height: 1.9; }

/* 新闻 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, box-shadow .2s; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px -22px rgba(11,87,208,.35); }
.news-card .thumb { height: 170px; overflow: hidden; background: #eaf1ff; display: flex; align-items: center; justify-content: center; font-size: 44px; }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-card .body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.news-card time { font-size: 12.5px; color: #8a94a6; }
.news-card h3 { font-size: 16.5px; margin: 8px 0 10px; line-height: 1.5; }
.news-card p { font-size: 13.5px; color: var(--ink-soft); flex: 1; }
.news-card .more { color: var(--primary); font-size: 13.5px; font-weight: 600; margin-top: 12px; }
.center-more { text-align: center; margin-top: 34px; }

/* FAQ */
.faq-item {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 24px; margin-bottom: 14px;
}
.faq-item h3 { font-size: 16px; margin-bottom: 8px; }
.faq-item p { font-size: 14.5px; color: var(--ink-soft); }

/* 联系 */
.contact-band {
  background: linear-gradient(135deg, #0d1b3e, var(--primary-dark));
  color: #fff; border-radius: 20px; padding: 52px 44px;
  display: grid; grid-template-columns: 1fr 1fr auto; gap: 36px; align-items: center;
}
.contact-band h2 { font-size: 27px; }
.contact-band p { opacity: .85; margin-top: 12px; font-size: 15px; }
.contact-list { font-size: 15.5px; line-height: 2.15; }
.contact-list b { opacity: .7; font-weight: 500; margin-right: 8px; font-size: 14px; }

/* 页脚 */
.site-footer { background: #0d1526; color: #93a0b8; padding: 46px 0 34px; margin-top: 70px; font-size: 13.5px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr auto; gap: 32px; align-items: start; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #1d2942; margin-top: 34px; padding-top: 20px; text-align: center; font-size: 12.5px; }

/* 新闻详情页 */
.article-page { padding: 56px 0 30px; }
.article-wrap { max-width: 820px; margin: 0 auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 44px 48px; }
.breadcrumb { font-size: 13px; color: #8a94a6; margin-bottom: 22px; }
.breadcrumb a { color: var(--primary); }
.article-wrap h1 { font-size: 28px; line-height: 1.4; }
.article-meta { margin: 16px 0 26px; font-size: 13.5px; color: #8a94a6; display: flex; gap: 18px; }
.article-lead { background: #f2f6ff; border-left: 4px solid var(--primary); padding: 14px 18px; border-radius: 0 10px 10px 0; font-size: 15px; color: var(--ink-soft); margin-bottom: 26px; }
.article-wrap img.banner { border-radius: 12px; margin: 8px 0 26px; }
.article-wrap h2 { font-size: 20px; margin: 30px 0 12px; }
.article-wrap p { font-size: 15.5px; color: #333d4d; margin-bottom: 14px; }
.article-wrap ul { padding-left: 20px; font-size: 15px; color: #333d4d; margin-bottom: 14px; }
.article-wrap ul li { margin: 6px 0; }
.article-footer-nav { margin-top: 36px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; font-size: 14px; }
.article-footer-nav a { color: var(--primary); font-weight: 600; }

/* 行业解决方案 */
.sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.sol-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; transition: transform .2s, box-shadow .2s;
}
.sol-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px -22px rgba(11,87,208,.35); }
.sol-card .sol-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.sol-card .sol-head .icon {
  width: 48px; height: 48px; border-radius: 12px; background: #eaf1ff;
  display: flex; align-items: center; justify-content: center; font-size: 24px; flex-shrink: 0;
}
.sol-card h3 { font-size: 18px; }
.sol-card .feat { font-size: 13.5px; color: #1d4ed8; background: #eef4ff; border-radius: 8px; padding: 8px 12px; margin-bottom: 12px; }
.sol-card .feat b { color: var(--primary); }
.sol-card ul { padding-left: 18px; font-size: 14px; color: var(--ink-soft); }
.sol-card ul li { margin: 5px 0; }
.sol-cases { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line); }
.sol-cases .label { font-size: 12.5px; color: #8a94a6; font-weight: 700; letter-spacing: 1px; margin-bottom: 9px; }
.sol-cases .case-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.sol-cases .case-chip {
  font-size: 12.5px; background: #f2f6ff; color: var(--primary-dark);
  border: 1px solid #d8e4ff; padding: 4px 13px; border-radius: 99px; font-weight: 600;
  white-space: nowrap;
}
.sol-cases a.case-chip { text-decoration: none; transition: all .15s ease; cursor: pointer; }
.sol-cases a.case-chip:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-1px); }

/* 行业解决方案卡片配图 */
.sol-card .sol-img {
  width: 100%; height: 150px; object-fit: cover;
  border-radius: 10px; margin: 12px 0 14px; display: block;
}

/* 首页案例名单可点击 */
.case-list a { color: inherit; text-decoration: none; border-bottom: 1px dashed #a9b6cc; transition: color .15s ease; }
.case-list a:hover { color: var(--primary); border-bottom-color: var(--primary); }

/* 核心优势 */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.adv-item { display: flex; gap: 14px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 20px; }
.adv-item .num {
  width: 34px; height: 34px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), #2f86ff);
  color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center; font-size: 15px;
}
.adv-item h3 { font-size: 16px; margin-bottom: 6px; }
.adv-item p { font-size: 13.5px; color: var(--ink-soft); }

/* 硬件 */
.hw-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.hw-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; text-align: center; transition: transform .2s, box-shadow .2s;
}
.hw-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px -22px rgba(11,87,208,.35); }
.hw-card .icon {
  width: 72px; height: 72px; margin: 0 auto 16px; border-radius: 18px;
  background: linear-gradient(135deg, #eaf1ff, #dcebff);
  display: flex; align-items: center; justify-content: center; font-size: 34px;
}
.hw-card h3 { font-size: 17px; margin-bottom: 8px; }
.hw-card p { font-size: 13.5px; color: var(--ink-soft); }

/* 发展历程时间轴 */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 30px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px;
  width: 3px; border-radius: 3px; background: linear-gradient(180deg, var(--primary), #9cc0ff);
}
.tl-item { position: relative; padding: 0 0 30px 24px; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 6px;
  width: 15px; height: 15px; border-radius: 50%;
  background: #fff; border: 3.5px solid var(--primary);
}
.tl-item .year { color: var(--primary); font-weight: 800; font-size: 18px; }
.tl-item h3 { font-size: 16.5px; margin: 4px 0 6px; }
.tl-item p { font-size: 14.5px; color: var(--ink-soft); }

/* 公司文化 */
.culture-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.culture-card {
  background: linear-gradient(135deg, #ffffff, #f2f6ff);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 26px;
}
.culture-card .tag { display: inline-block; background: var(--primary); color: #fff; font-size: 13px; font-weight: 600; padding: 4px 14px; border-radius: 99px; margin-bottom: 14px; }
.culture-card h3 { font-size: 17.5px; margin-bottom: 8px; }
.culture-card p { font-size: 14.5px; color: var(--ink-soft); }

/* 子页面顶部 banner */
.page-banner {
  background:
    radial-gradient(700px 320px at 90% -20%, rgba(255,122,26,.14), transparent 60%),
    linear-gradient(180deg, #ffffff, #eef3fb);
  padding: 60px 0 50px; text-align: center;
}
.page-banner .kicker { color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: 3px; }
.page-banner h1 { font-size: 36px; margin-top: 10px; }
.page-banner p { color: var(--ink-soft); margin-top: 14px; max-width: 720px; margin-left: auto; margin-right: auto; font-size: 16px; }

/* 团队风采 */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.team-photo {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, box-shadow .2s;
}
.team-photo:hover { transform: translateY(-4px); box-shadow: 0 18px 40px -22px rgba(11,87,208,.35); }
.team-photo img { width: 100%; height: 230px; object-fit: cover; }
.team-photo .ph {
  height: 230px; display: flex; flex-direction: column; gap: 10px;
  align-items: center; justify-content: center;
  background: repeating-linear-gradient(45deg, #f2f6ff, #f2f6ff 12px, #eaf1ff 12px, #eaf1ff 24px);
  color: #8fa8d8; font-size: 40px;
}
.team-photo .ph span { font-size: 13px; color: #8a94a6; letter-spacing: 1px; }
.team-photo .cap { padding: 14px 18px; }
.team-photo .cap h3 { font-size: 15.5px; }
.team-photo .cap p { font-size: 13px; color: var(--ink-soft); margin-top: 3px; }

/* AI 定制开发 */
.ai-hero {
  background:
    radial-gradient(800px 380px at 15% -20%, rgba(124,58,237,.25), transparent 60%),
    radial-gradient(700px 380px at 90% 120%, rgba(11,87,208,.25), transparent 60%),
    linear-gradient(135deg, #0d1b3e 0%, #1e2a5e 55%, #3b1d6e 100%);
  color: #fff; padding: 78px 0 70px;
}
.ai-hero .kicker { color: #a78bfa; font-weight: 700; font-size: 14px; letter-spacing: 3px; }
.ai-hero h1 { font-size: 38px; margin-top: 12px; line-height: 1.3; }
.ai-hero h1 .hl { background: linear-gradient(90deg, #a78bfa, #67e8f9); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ai-hero p.lead { margin-top: 18px; font-size: 17px; opacity: .88; max-width: 640px; }
.ai-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.ai-chip {
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.25);
  padding: 8px 18px; border-radius: 99px; font-size: 14px;
}
.flow-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.flow-step {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 16px; text-align: center; position: relative;
}
.flow-step .no {
  width: 34px; height: 34px; margin: 0 auto 12px; border-radius: 50%;
  background: linear-gradient(135deg, #7c3aed, #4f46e5);
  color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.flow-step h3 { font-size: 15px; margin-bottom: 6px; }
.flow-step p { font-size: 12.5px; color: var(--ink-soft); }
@media (max-width: 900px) { .flow-steps { grid-template-columns: repeat(2, 1fr); } .ai-hero h1 { font-size: 30px; } }
@media (max-width: 560px) { .flow-steps { grid-template-columns: 1fr; } }

@media (max-width: 900px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .team-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .sol-grid, .culture-grid { grid-template-columns: 1fr; }
  .adv-grid, .hw-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .adv-grid, .hw-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .hero-grid, .contact-band, .footer-grid { grid-template-columns: 1fr; }
  .stats-grid, .cards-3, .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 32px; }
  .nav-links { display: none; }
}
@media (max-width: 560px) {
  .stats-grid, .cards-3, .case-grid, .news-grid { grid-template-columns: 1fr; }
}

/* --- 客服微信二维码 --- */
.footer-kefu { text-align: center; }
.footer-kefu img { width: 112px; height: 112px; object-fit: cover; border-radius: 10px; background: #fff; padding: 6px; display: block; margin: 0 auto 10px; }
.footer-kefu b { color: #fff; font-size: 13.5px; display: block; margin-bottom: 5px; }
.footer-kefu p { font-size: 12px; line-height: 1.7; color: #93a0b8; margin: 0; }
.site-footer > .footer-kefu { margin-bottom: 24px; }
.footer-icp { color: #93a0b8; text-decoration: none; }
.footer-icp:hover { color: #fff; }

/* --- 联系板块内嵌二维码 --- */
.contact-qr { text-align: center; }
.contact-qr img { width: 148px; height: 148px; border-radius: 12px; background: #fff; padding: 8px; display: block; margin: 0 auto 10px; }
.contact-qr b { font-size: 13.5px; font-weight: 500; opacity: .92; }