/* =========================================================
   企达翼诚官网 · 设计系统
   风格参考 LanMate（lanmate.lanxin.cn）：
   深藏青主色 + 浅灰底 + 白卡片 + 细描边 + 大留白
   ========================================================= */

:root{
  /* 品牌与中性色 */
  --primary:#01053f;
  --primary-deep:#01053f;
  --primary-light:#a9b6f2;
  --primary-soft:#eef0fa;
  --background:#f7f8fc;
  --card:#ffffff;
  --muted:#f3f4f8;
  --bg-dark:#0b0b14;
  --foreground:#1a1a2e;
  --secondary:#5c5c6e;
  --tertiary:#8a8a99;
  --on-brand:#ffffff;
  --on-dark:#ffffff;
  --on-dark-secondary:#b4b4c8;
  --border:#e8e8ee;

  /* 圆角 */
  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;
  --r-xl:24px;

  /* 阴影 */
  --shadow-lg:0 10px 40px -10px rgba(0,0,0,.10), 0 4px 12px -2px rgba(0,0,0,.05);
  --shadow-brand:0 8px 24px -6px rgba(1,5,63,.40);
  --shadow-nav:0 1px 12px rgba(0,0,0,.06);

  /* 字体 */
  --font-sans:-apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
              "Source Han Sans SC", "Noto Sans CJK SC", "Segoe UI", Roboto, sans-serif;

  /* 容器 */
  --wrap:1280px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--card);
  color:var(--foreground);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.45;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-wrap:pretty;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
b,strong{font-weight:700}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
@media (min-width:1024px){.wrap{padding:0 32px}}

.grad{
  background:linear-gradient(100deg,#01053f 0%,#2c3aa8 55%,#5b6ef0 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* =====================  导航栏  ===================== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(247,248,252,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow .3s,border-color .3s,background .3s;
}
.nav.scrolled{
  background:rgba(247,248,252,.97);
  border-bottom-color:var(--border);
  box-shadow:var(--shadow-nav);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-img{display:block;height:38px;width:auto}

.nav-links{display:flex;align-items:center;gap:28px}
.nav-links > a{
  font-size:14px;font-weight:500;color:var(--foreground);
  transition:color .2s;position:relative;
}
.nav-links > a:hover{color:var(--primary)}
.nav-links > a.active{color:var(--primary);font-weight:600}
.nav-links > a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-8px;
  height:2px;border-radius:2px;background:var(--primary);
}
.nav-toggle{
  display:none;flex-direction:column;gap:5px;
  background:none;border:0;cursor:pointer;padding:8px;
}
.nav-toggle span{display:block;width:22px;height:2px;border-radius:2px;background:var(--foreground)}

/* =====================  按钮  ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1.2;
  background:var(--primary);color:var(--on-brand);border:1px solid var(--primary);
  cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s;
  box-shadow:var(--shadow-brand);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px -6px rgba(1,5,63,.5)}
.btn-ghost{
  background:transparent;color:var(--primary);
  border:1px solid var(--border);box-shadow:none;
}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary)}
.btn-sm{padding:8px 18px;font-size:14px;border-radius:999px;box-shadow:none}
.btn-sm:hover{transform:none}
.nav-links .btn{
  background:transparent;color:var(--primary);
  border:1px solid rgba(1,5,63,.25);box-shadow:none;
}
.nav-links .btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.nav-links .btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.nav-links .btn.active::after{display:none}

/* 深底上的按钮 */
.on-dark .btn,.hero .btn,.cta-panel .btn{
  background:#fff;color:var(--primary-deep);border-color:#fff;
}
.on-dark .btn:hover,.hero .btn:hover,.cta-panel .btn:hover{
  background:#fff;transform:translateY(-2px);box-shadow:0 12px 28px -6px rgba(0,0,0,.35);
}
.hero .btn-ghost,.cta-panel .btn-ghost{
  background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.35);
}
.hero .btn-ghost:hover,.cta-panel .btn-ghost:hover{
  background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.7);color:#fff;
}

/* =====================  首页 Hero（深底）  ===================== */
.hero{
  position:relative;overflow:hidden;text-align:center;
  padding:clamp(140px,16vw,200px) 0 clamp(80px,10vw,120px);
  background:
    radial-gradient(900px 520px at 18% 0%,rgba(169,182,242,.28),transparent 62%),
    radial-gradient(760px 460px at 84% 12%,rgba(91,110,240,.34),transparent 60%),
    linear-gradient(160deg,#01053f 0%,#070b3a 55%,#0d1250 100%);
  color:#fff;
}
.hero-glow{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 50% 26%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 50% 26%,#000 0%,transparent 72%);
}
.hero-inner{position:relative;z-index:1}
.eyebrow{
  display:inline-flex;align-items:center;
  padding:6px 16px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:rgba(169,182,242,.25);color:#fff;
}
.hero h1{
  margin-top:24px;
  font-size:clamp(34px,5vw,58px);line-height:1.15;
  font-weight:800;letter-spacing:-.025em;color:#fff;text-wrap:balance;
}
.hero-sub{
  max-width:780px;margin:20px auto 0;
  font-size:clamp(15px,1.4vw,18px);line-height:1.5;
  color:rgba(255,255,255,.82);
}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:36px}
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  max-width:920px;margin:64px auto 0;
}
.stat{
  padding:22px 14px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.stat b{display:block;font-size:30px;line-height:1.2;font-weight:800;color:#fff;letter-spacing:-.02em}
.stat span{display:block;margin-top:4px;font-size:13px;color:rgba(255,255,255,.65)}

/* =====================  通用章节  ===================== */
.section{padding:clamp(44px,5.5vw,76px) 0;position:relative}
.section-alt{background:var(--background)}

.kicker{
  display:inline-flex;align-items:center;gap:8px;
  margin-bottom:14px;padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--primary);background:var(--primary-soft);
  border:1px solid rgba(1,5,63,.10);
}
.h2{
  font-size:clamp(28px,4vw,40px);line-height:1.15;
  font-weight:800;letter-spacing:-.025em;
  color:var(--foreground);text-wrap:balance;
}
.h3{
  font-size:clamp(20px,2.4vw,26px);line-height:1.3;
  font-weight:700;letter-spacing:-.01em;color:var(--foreground);
  margin:0 0 20px;text-wrap:balance;
}
.section > .wrap > .h3 + .h3{margin-top:56px}
.lead{margin-top:12px;max-width:820px;font-size:clamp(15px,1.3vw,18px);color:var(--secondary);line-height:1.5}
/* 强制单行显示的导语（窄屏为避免溢出仍自动换行） */
.lead-nowrap{white-space:nowrap;max-width:none}
/* 宽屏才生效的手动换行，窄屏取消，交给自动换行 */
.br-lg{display:inline}
.note-sm{margin-top:18px;font-size:14px;color:var(--tertiary)}
.link{color:var(--primary);font-weight:500}
.link:hover{text-decoration:underline}
.todo{
  display:inline-block;margin-top:16px;padding:10px 14px;
  font-size:13px;color:var(--primary);
  background:var(--primary-soft);border:1px dashed rgba(1,5,63,.25);
  border-radius:var(--r-md);
}

/* =====================  图片  ===================== */
.figure{margin-top:22px}
.figure img{
  width:100%;border-radius:var(--r-lg);
  border:1px solid var(--border);box-shadow:var(--shadow-lg);
  transition:transform .3s,box-shadow .3s;
}
.figure img:hover{transform:translateY(-2px);box-shadow:0 16px 48px -12px rgba(0,0,0,.16)}
/* 首页「五种能力，一套底座」下的产品演示视频：静音循环自动播放，先用静态图占位 */
.figure video{
  display:block;width:100%;height:auto;aspect-ratio:16/9;
  background:var(--card);
  border-radius:var(--r-lg);
  border:1px solid var(--border);box-shadow:var(--shadow-lg);
  transition:transform .3s,box-shadow .3s;
}
.figure video:hover{transform:translateY(-2px);box-shadow:0 16px 48px -12px rgba(0,0,0,.16)}
.cap{margin-top:12px;text-align:center;font-size:13px;color:var(--tertiary)}

/* =====================  卡片  ===================== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}
.cards-2{grid-template-columns:repeat(2,1fr)}
.cards-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:26px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{
  transform:translateY(-3px);
  border-color:rgba(1,5,63,.35);
  box-shadow:var(--shadow-lg);
}
.card-link{display:block}
.card-tag{
  display:inline-grid;place-items:center;min-width:42px;height:32px;padding:0 12px;
  margin-bottom:12px;border-radius:8px;
  font-size:14px;font-weight:800;letter-spacing:.02em;
  color:var(--primary-deep);background:var(--primary-soft);
  border:1px solid rgba(1,5,63,.12);
}
.card h4{font-size:16px;font-weight:700;color:var(--foreground);margin-bottom:10px;letter-spacing:-.01em}
.card p{font-size:14px;line-height:1.5;color:var(--secondary)}
.metric{margin-top:12px;font-size:13px;color:var(--tertiary)}

/* 优势条目 */
.adv{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px}
/* 固定两列（两条原则一行，共两行） */
.adv-2{grid-template-columns:repeat(2,1fr)}
.adv-item{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:24px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.adv-item:hover{transform:translateY(-3px);border-color:rgba(1,5,63,.35);box-shadow:var(--shadow-lg)}
.adv-item b{display:block;font-size:15px;font-weight:700;color:var(--foreground);margin-bottom:8px}
.adv-item span{font-size:14px;line-height:1.5;color:var(--secondary)}

/* 流程七步 */
.flow{display:grid;grid-template-columns:repeat(7,1fr);gap:10px;margin-top:24px}
.flow-step{
  text-align:center;padding:18px 10px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.flow-step:hover{transform:translateY(-3px);border-color:rgba(1,5,63,.35);box-shadow:var(--shadow-lg)}
.flow-step b{display:block;font-size:12px;font-weight:700;color:var(--primary);letter-spacing:.06em}
.flow-step span{display:block;margin:8px 0 5px;font-size:14px;font-weight:600;color:var(--foreground)}
.flow-step i{display:block;font-size:12px;font-style:normal;line-height:1.5;color:var(--tertiary)}

/* 处置分级 */
.levels{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.level{
  display:inline-flex;align-items:center;padding:7px 16px;border-radius:999px;
  font-size:13px;font-weight:500;
  color:var(--primary-deep);background:var(--primary-soft);
  border:1px solid rgba(1,5,63,.12);
}
.level-danger{color:#b42318;background:#fef3f2;border-color:rgba(180,35,24,.18)}

/* 步骤 / 行业 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:28px}
.step-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.step-item:hover{transform:translateY(-3px);border-color:rgba(1,5,63,.35);box-shadow:var(--shadow-lg)}
.step-item b{font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.04em}
.step-item p{margin-top:10px;font-size:14px;line-height:1.5;color:var(--secondary)}
.industry{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:26px}
.ind{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:24px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.ind:hover{transform:translateY(-3px);border-color:rgba(1,5,63,.35);box-shadow:var(--shadow-lg)}
.ind h4{font-size:16px;font-weight:700;color:var(--foreground);margin-bottom:10px}
.ind p{font-size:14px;line-height:1.5;color:var(--secondary)}

/* 图文分栏 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px);align-items:center;margin-top:40px}
.split-text p{font-size:15px;line-height:1.55;color:var(--secondary)}
.split h2{
  margin-bottom:12px;font-size:clamp(22px,2.6vw,30px);line-height:1.25;
  font-weight:800;letter-spacing:-.02em;color:var(--foreground);text-wrap:balance;
}
.split .kicker{margin-bottom:10px}
.split.reverse .split-img{order:-1}   /* 图文左右交替 */
.split-img img{width:100%;border-radius:var(--r-lg);border:1px solid var(--border);box-shadow:var(--shadow-lg)}
.list{margin:14px 0;color:var(--secondary);font-size:15px}
.list li{list-style:none;position:relative;padding-left:22px;margin-bottom:8px;line-height:1.5}
.list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:7px;height:7px;border-radius:2px;background:var(--primary);opacity:.55;
}
.about p{font-size:16px;line-height:1.55;color:var(--secondary);margin-top:16px;max-width:900px}

/* 整段居中：标题与眉标居中，内容块居中但正文保持左对齐 */
.center-block{text-align:center}
.center-block .faq{margin-left:auto;margin-right:auto;text-align:left}

/* =====================  FAQ  ===================== */
.faq{margin-top:28px;max-width:900px}
.faq details{border-bottom:1px solid var(--border)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--foreground);
  transition:color .2s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--primary)}
.faq summary::after{
  content:"+";flex-shrink:0;
  font-size:20px;font-weight:400;line-height:1;color:var(--primary);
  transition:transform .3s;
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 20px;font-size:14.5px;line-height:1.5;color:var(--secondary)}

/* =====================  资讯列表  ===================== */
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:20px}
.news-item{
  display:block;padding:26px;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.news-item:hover{transform:translateY(-3px);border-color:rgba(1,5,63,.35);box-shadow:var(--shadow-lg)}
.news-date{font-size:13px;font-weight:500;color:var(--tertiary)}
.news-item h3{
  margin:8px 0 8px;font-size:18px;font-weight:700;line-height:1.5;
  color:var(--foreground);letter-spacing:-.01em;
}
.news-item p{font-size:14px;line-height:1.5;color:var(--secondary)}
.news-more{display:inline-block;margin-top:14px;font-size:14px;font-weight:600;color:var(--primary)}
.news-item:hover .news-more{text-decoration:underline}

/* 横向自动滚动轨道：CSS 动画驱动，无滚动条；鼠标移到文章上暂停 */
.news-rail{
  margin-top:28px;padding:4px 0 14px;
  overflow:hidden;                     /* 不出现滚动条 */
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 24px,#000 calc(100% - 24px),transparent 100%);
}
.news-track{
  display:flex;gap:20px;width:max-content;
  animation:rail-scroll 42s linear infinite;
  will-change:transform;
}
/* 悬停 / 键盘聚焦时暂停，移出继续 */
.news-rail:hover .news-track,
.news-rail:focus-within .news-track{animation-play-state:paused}
.news-track > .news-item{
  flex:0 0 clamp(280px,26vw,360px);
  margin-top:0;
}
/* 内容已复制一份：位移「一半 + 半个间距」即可无缝衔接 */
@keyframes rail-scroll{
  from{transform:translateX(0)}
  to{transform:translateX(calc(-50% - 10px))}
}
.news-rail + .rail-tip{margin-top:6px;font-size:13px;color:var(--tertiary)}
@media (prefers-reduced-motion:reduce){
  .news-track{animation:none}
  .news-rail{overflow-x:auto}
}

/* =====================  内页 Hero  ===================== */
.page-hero{
  padding:clamp(108px,11vw,140px) 0 clamp(36px,4.5vw,56px);
  background:var(--background);
  border-bottom:1px solid var(--border);
}
.page-hero h1{
  font-size:clamp(28px,4vw,40px);line-height:1.15;
  font-weight:800;letter-spacing:-.025em;color:var(--foreground);text-wrap:balance;
}
.page-hero p{margin-top:14px;max-width:760px;font-size:clamp(15px,1.3vw,18px);color:var(--secondary)}

/* 内页 Hero 深底版：与首页 Hero 同一套视觉（深底渐变 + 光晕 + 网格） */
.page-hero-dark{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 520px at 18% 0%,rgba(169,182,242,.28),transparent 62%),
    radial-gradient(760px 460px at 84% 12%,rgba(91,110,240,.34),transparent 60%),
    linear-gradient(160deg,#01053f 0%,#070b3a 55%,#0d1250 100%);
  color:#fff;
  border-bottom:0;
}
.page-hero-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 62% 26%,#000 0%,transparent 74%);
  mask-image:radial-gradient(circle at 62% 26%,#000 0%,transparent 74%);
}
.page-hero-dark > .wrap{position:relative;z-index:1}
.page-hero-dark h1{color:#fff}
/* 副标题不设宽度上限：一行放得下就一行，放不下自动换行 */
.page-hero-dark p{color:rgba(255,255,255,.82);max-width:none}

/* 内页 Hero 主题背景图：右侧图形 + 左侧留白，保证标题可读 */
.page-hero-ai,
.page-hero-quantum,
.page-hero-solutions,
.page-hero-news,
.page-hero-about{
  background-color:var(--background);
  background-size:cover;
  background-position:right center;
  background-repeat:no-repeat;
}
.page-hero-ai{background-image:url("../images/27_ai_hero_bg.png")}
.page-hero-quantum{background-image:url("../images/28_quantum_hero_bg.png")}
.page-hero-solutions{background-image:url("../images/29_solutions_hero_bg.png")}
.page-hero-news{background-image:url("../images/30_news_hero_bg.png")}
.page-hero-about{background-image:url("../images/31_about_hero_bg.png")}
.page-hero-ai > .wrap,
.page-hero-quantum > .wrap,
.page-hero-solutions > .wrap,
.page-hero-news > .wrap,
.page-hero-about > .wrap{position:relative;z-index:1}

/* 面包屑 */
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--tertiary);margin-bottom:18px}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:#c3c3cf}
.breadcrumb a{color:var(--tertiary);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--foreground)}

/* =====================  CTA 通栏  ===================== */
.cta-band{background:var(--background)}
.cta-band .wrap{
  max-width:1080px;padding:clamp(40px,6vw,64px) clamp(24px,4vw,56px);
  border-radius:var(--r-xl);text-align:center;color:#fff;
  background:
    radial-gradient(700px 380px at 88% 10%,rgba(91,110,240,.45),transparent 60%),
    linear-gradient(140deg,#01053f 0%,#0a1050 100%);
  box-shadow:var(--shadow-brand);
}
.cta-band h2{
  font-size:clamp(24px,3.2vw,34px);line-height:1.2;
  font-weight:800;letter-spacing:-.025em;color:#fff;text-wrap:balance;
}
.cta-band p{margin:14px auto 28px;max-width:640px;font-size:clamp(15px,1.3vw,17px);color:rgba(255,255,255,.8)}

/* =====================  联系我们（静态）  ===================== */
.info-list{list-style:none;margin-top:22px;max-width:860px}
.info-list li{
  display:flex;gap:16px;align-items:baseline;
  padding:14px 0;border-bottom:1px solid var(--border);
  font-size:15px;color:var(--foreground);
}
.info-list li:last-child{border-bottom:0}
.info-list span{flex:0 0 88px;font-size:14px;color:var(--tertiary)}

/* 联系我们：左侧「直接找到我们」文字块 + 右侧公司位置地图，两者顶部对齐 */
.contact-grid{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:clamp(24px,4vw,48px);align-items:start;
}
.contact-grid .info-list{margin-top:22px;max-width:none}
.contact-map{margin:0}
.contact-map img{
  display:block;width:100%;height:auto;
  border-radius:var(--r-lg);
  border:1px solid var(--border);box-shadow:var(--shadow-lg);
}
.contact-map .cap{margin-top:12px;text-align:left}
@media (max-width:900px){
  .contact-grid{grid-template-columns:1fr}
  .contact-map{margin-top:24px}
}



/* =====================  文章页  ===================== */
.article{padding:clamp(120px,13vw,160px) 0 clamp(64px,8vw,96px)}
.article > .wrap{max-width:820px}
.article h1{
  font-size:clamp(28px,4vw,40px);line-height:1.2;
  font-weight:800;letter-spacing:-.025em;color:var(--foreground);text-wrap:balance;
}
.article-meta{margin-top:14px;font-size:14px;color:var(--tertiary)}
.article-lead{
  margin-top:20px;font-size:clamp(15.5px,1.4vw,17.5px);line-height:1.55;
  color:var(--foreground);font-weight:500;
}
.article h2{
  margin:34px 0 10px;
  font-size:clamp(19px,2.2vw,24px);line-height:1.35;
  font-weight:700;letter-spacing:-.01em;color:var(--foreground);
}
.article p{font-size:16px;line-height:1.62;color:var(--secondary);margin-bottom:13px}
.article-list{margin:8px 0 22px}
.article-list li{
  font-size:16px;line-height:1.58;color:var(--secondary);
  margin-bottom:8px;padding-left:22px;position:relative;
}
.article-list li::before{
  content:"";position:absolute;left:0;top:12px;
  width:7px;height:7px;border-radius:2px;background:var(--primary);opacity:.5;
}
.article-list b{color:var(--foreground);font-weight:700}
.article-figure{margin:28px 0}
.article-figure img{width:100%;border-radius:var(--r-lg);border:1px solid var(--border);box-shadow:var(--shadow-lg)}
.article-figure figcaption{margin-top:12px;text-align:center;font-size:13px;color:var(--tertiary)}
.quote{
  margin:28px 0;padding:18px 22px;
  border-left:3px solid var(--primary);
  border-radius:0 var(--r-md) var(--r-md) 0;
  background:var(--background);
  font-size:16px;line-height:1.58;color:var(--foreground);
}
.article-cta{
  margin-top:52px;padding:28px;
  background:var(--background);border:1px solid var(--border);border-radius:var(--r-lg);
}
.article-cta p{margin-bottom:18px;font-size:15.5px;color:var(--foreground)}
.article-cta-center{text-align:center}
.article-related{margin-top:38px;padding-top:24px;border-top:1px solid var(--border)}
.related-title{margin-bottom:12px;font-size:13px;font-weight:600;color:var(--tertiary)}
.article-related a{display:block;margin-bottom:10px;font-size:15.5px;font-weight:500;color:var(--primary)}
.article-related a:hover{text-decoration:underline}

/* =====================  页脚（深色）  ===================== */
.footer{
  padding:64px 0 32px;
  background:var(--bg-dark);color:var(--on-dark-secondary);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:clamp(24px,4vw,48px);
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff}
/* 深底页脚上的品牌 logo 用白底托底，保证蓝色标识清晰可读 */
.footer-logo-img{
  display:block;height:34px;width:auto;
  background:#fff;padding:8px 12px;border-radius:var(--r-sm);
}
.footer-slogan{margin-top:10px;font-size:14px;line-height:1.5;color:var(--on-dark-secondary);max-width:320px}
.footer-title{margin-bottom:14px;font-size:14px;font-weight:600;color:var(--on-dark)}
.footer-col{display:flex;flex-direction:column;gap:10px}
.footer-col a{
  font-size:14px;color:var(--on-dark-secondary);
  transition:color .2s;width:fit-content;
}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  padding-top:24px;font-size:12.5px;color:#6f6f85;
}

/* =====================  组件增强  ===================== */
/* 卡片要点清单 */
.card-list{margin-top:12px;display:grid;gap:8px}
.card-list li{
  list-style:none;position:relative;padding-left:20px;
  font-size:13.5px;line-height:1.55;color:var(--secondary);
}
.card-list li::before{
  content:"✓";position:absolute;left:0;top:0;
  font-size:12px;font-weight:700;color:var(--primary);
}

/* 特性清单（无方框：大编号 + 细分隔线 + 悬停底色） */
.feat-list{
  margin-top:24px;border-top:1px solid var(--border);
  display:grid;grid-template-columns:repeat(2,1fr);gap:0 clamp(20px,3vw,40px);
}
.feat-list-1{grid-template-columns:1fr}   /* 单列：与上方卡片承接，不再是一排方框 */
.feat{
  display:grid;grid-template-columns:78px 1fr;gap:26px;align-items:start;
  padding:22px 12px;border-bottom:1px solid var(--border);
  transition:background .25s,border-radius .25s;
}
.feat:hover{background:var(--primary-soft);border-radius:var(--r-md)}
.feat-num{
  font-size:32px;font-weight:800;line-height:1;letter-spacing:-.04em;
  color:rgba(1,5,63,.28);transition:color .25s,transform .25s;
}
.feat:hover .feat-num{color:var(--primary);transform:translateX(4px)}
.feat h4{font-size:17px;font-weight:700;color:var(--foreground);margin-bottom:8px;letter-spacing:-.01em}
.feat p{font-size:14.5px;line-height:1.58;color:var(--secondary);max-width:760px}

/* 资质 / 特性徽章行 */
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;
  font-size:13.5px;font-weight:600;
  color:var(--primary-deep);background:var(--card);
  border:1px solid var(--border);
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
.badge-alt{background:var(--primary-soft);border-color:rgba(1,5,63,.12)}

/* 场景块：左侧说明 + 右侧配图 */
.scenes{display:grid;gap:22px;margin-top:28px}
.scene{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,48px);align-items:center;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-xl);padding:clamp(22px,3vw,34px);
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.scene:hover{transform:translateY(-3px);border-color:rgba(1,5,63,.30);box-shadow:var(--shadow-lg)}
.scene h3{font-size:clamp(18px,2vw,22px);font-weight:700;letter-spacing:-.01em;color:var(--foreground);margin-bottom:10px}
.scene p{font-size:14.5px;line-height:1.62;color:var(--secondary)}
.scene-prompt{
  margin:14px 0;padding:12px 16px;
  border-left:3px solid var(--primary);border-radius:0 var(--r-md) var(--r-md) 0;
  background:var(--background);
  font-size:15px;font-weight:600;color:var(--foreground);
}
.scene-highlight{margin-top:12px;font-size:13.5px;font-weight:600;color:var(--primary)}
.scene-img img{
  width:100%;border-radius:var(--r-lg);
  border:1px solid var(--border);box-shadow:var(--shadow-lg);
}

/* 深底 Hero 上的眉标与要点行 */
.page-hero-dark .eyebrow{margin-bottom:18px}
.hero-points{
  display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:20px;
  font-size:14px;color:rgba(255,255,255,.82);
}
.hero-points span{display:inline-flex;align-items:center;gap:8px}
.hero-points span::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--primary-light);
}

/* =====================  滚动动效  ===================== */
.reveal{
  opacity:0;transform:translateY(40px);
  transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1);
}
.reveal.in{opacity:1;transform:none}

/* =====================  响应式  ===================== */
@media (max-width:1080px){
  .cards,.cards-4,.adv{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(4,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-links{
    position:absolute;top:64px;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    padding:12px 24px 20px;
    background:rgba(247,248,252,.98);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border);
    box-shadow:var(--shadow-nav);
  }
  .nav-links.open{display:flex}
  .nav-links > a{padding:12px 0;font-size:15px}
  .nav-links > a.active::after{display:none}
  .nav-links .btn{width:100%;margin-top:10px;border-radius:var(--r-md)}
  .split{grid-template-columns:1fr;gap:28px}
  .scene{grid-template-columns:1fr}
  .feat{grid-template-columns:52px 1fr;gap:16px;padding:22px 8px}
  .feat-num{font-size:26px}
  .feat-list{grid-template-columns:1fr}
  .steps,.industry{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr);margin-top:48px}
  /* 窄屏：背景图压淡，保证标题可读 */
  .page-hero-ai{
    background-image:linear-gradient(rgba(247,248,252,.9),rgba(247,248,252,.97)),
                     url("../images/27_ai_hero_bg.png");
  }
  .page-hero-quantum{
    background-image:linear-gradient(rgba(247,248,252,.9),rgba(247,248,252,.97)),
                     url("../images/28_quantum_hero_bg.png");
  }
  .page-hero-solutions{
    background-image:linear-gradient(rgba(247,248,252,.9),rgba(247,248,252,.97)),
                     url("../images/29_solutions_hero_bg.png");
  }
  .page-hero-news{
    background-image:linear-gradient(rgba(247,248,252,.9),rgba(247,248,252,.97)),
                     url("../images/30_news_hero_bg.png");
  }
  .page-hero-about{
    background-image:linear-gradient(rgba(247,248,252,.9),rgba(247,248,252,.97)),
                     url("../images/31_about_hero_bg.png");
  }
  .page-hero-ai,.page-hero-quantum,.page-hero-solutions,
  .page-hero-news,.page-hero-about{background-position:right top}
  .lead-nowrap{white-space:normal}  /* 窄屏放不下，恢复换行避免横向溢出 */
  .br-lg{display:none}
}
@media (max-width:640px){
  .cards,.cards-2,.cards-4,.adv,.adv-2,.steps,.industry,.flow,.news-list{grid-template-columns:1fr}
  .info-list li{flex-direction:column;gap:4px}
  .info-list span{flex:none}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-actions .btn{width:100%}
}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .card:hover,.news-item:hover,.adv-item:hover,.ind:hover,
  .step-item:hover,.flow-step:hover,.btn:hover{transform:none}
}