/* ============================================================
   惠谷云 HGY CLOUD 官网样式 —— 现代互联网公司风格 / 响应式
   ============================================================ */
:root{
  --primary:#4f46e5; --primary-2:#7c3aed; --ink:#0f172a; --ink-2:#334155;
  --muted:#64748b; --line:#e2e8f0; --bg:#ffffff; --bg-soft:#f6f7fb;
  --grad:linear-gradient(135deg,#4f46e5 0%,#7c3aed 55%,#a855f7 100%);
  --radius:16px; --shadow:0 10px 30px rgba(15,23,42,.08);
  --shadow-lg:0 24px 60px rgba(79,70,229,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s}
.container{width:min(1160px,92%);margin:0 auto}
.container-narrow{width:min(760px,92%);margin:0 auto}

/* ---------- 导航 ---------- */
.nav-wrap{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .25s, box-shadow .25s}
.nav-wrap.scrolled{border-color:var(--line);box-shadow:0 4px 20px rgba(15,23,42,.05)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:10px;background:var(--grad);color:#fff;font-weight:800;font-size:18px;flex:none;
  box-shadow:0 4px 14px rgba(79,70,229,.35)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:18px;letter-spacing:.05em}
.brand-text em{font-style:normal;font-size:10px;color:var(--muted);letter-spacing:.18em}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{font-size:15px;color:var(--ink-2);font-weight:500;position:relative;padding:6px 0}
.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:-4px;height:3px;
  border-radius:2px;background:var(--grad)}
.nav-links .btn{margin-left:6px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 22px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;
  border:0;transition:transform .15s, box-shadow .2s, background .2s;white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(79,70,229,.35)}
.btn-primary:hover{box-shadow:0 10px 26px rgba(79,70,229,.45);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn-light{background:#fff;color:var(--primary);box-shadow:0 6px 18px rgba(0,0,0,.15)}
.btn-light:hover{transform:translateY(-1px)}
.btn-lg{padding:14px 30px;font-size:16px;border-radius:12px}
.btn-sm{padding:7px 16px;font-size:13.5px}
.btn-block{width:100%}
.btn-plain{background:var(--bg-soft);color:var(--ink-2)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(140deg,#111436 0%,#1e1b4b 40%,#312e81 75%,#4c1d95 100%)}
.hero-bg{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 300px at 85% 20%,rgba(168,85,247,.35),transparent 65%),
             radial-gradient(500px 260px at 10% 90%,rgba(79,70,229,.4),transparent 60%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;
  align-items:center;padding:96px 0 110px}
.eyebrow{font-size:12px;letter-spacing:.32em;color:#a5b4fc;font-weight:700;margin-bottom:18px}
.hero h1{font-size:clamp(34px,4.6vw,56px);line-height:1.22;font-weight:800;letter-spacing:.01em}
.grad-text{background:linear-gradient(90deg,#a5b4fc,#e0aaff,#f0abfc);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lead{margin:22px 0 30px;font-size:17px;color:#c7d2fe;max-width:34em}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.stats{display:flex;gap:44px;margin-top:46px;flex-wrap:wrap}
.stat strong{display:block;font-size:30px;font-weight:800;color:#fff}
.stat span{font-size:13px;color:#a5b4fc}
/* Hero 右侧拟物卡片 */
.hero-card{filter:drop-shadow(0 30px 50px rgba(0,0,0,.35))}
.hc-window{background:rgba(255,255,255,.97);border-radius:18px;padding:18px;color:var(--ink);
  animation:float 5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.hc-bar{display:flex;gap:6px;margin-bottom:14px}
.hc-bar i{width:10px;height:10px;border-radius:50%;background:#e2e8f0}
.hc-bar i:first-child{background:#fca5a5}.hc-bar i:nth-child(2){background:#fcd34d}
.hc-q{background:var(--bg-soft);border-radius:10px;padding:10px 14px;font-size:13.5px;color:var(--ink-2);margin-bottom:12px}
.hc-ai{display:flex;gap:10px;align-items:flex-start}
.hc-badge{flex:none;background:var(--grad);color:#fff;border-radius:8px;font-size:12px;
  font-weight:700;padding:4px 8px;margin-top:2px}
.hc-ai p{font-size:14px;color:var(--ink)}
.hc-tags{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.hc-tags span{font-size:12px;color:var(--primary);background:#eef2ff;border-radius:999px;padding:4px 12px;font-weight:600}

/* ---------- 通用 Section ---------- */
.section{padding:88px 0}
.section-soft{background:var(--bg-soft)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;
  margin-bottom:44px;flex-wrap:wrap}
.kicker{font-size:12px;font-weight:800;letter-spacing:.28em;color:var(--primary);margin-bottom:10px}
.kicker-light{color:#a5b4fc}
.section-head h2,.split h2{font-size:clamp(26px,3vw,36px);line-height:1.3;font-weight:800}
.section-head > p{color:var(--muted);max-width:30em}
.link-more{color:var(--primary);font-weight:600;white-space:nowrap}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.num{font-size:11px;font-weight:800;letter-spacing:.22em;color:var(--primary);margin-bottom:12px}

/* ---------- 卡片 ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;box-shadow:0 2px 8px rgba(15,23,42,.04);
  transition:transform .25s, box-shadow .25s;display:flex;flex-direction:column;gap:8px}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.card h3{font-size:19px;font-weight:700}
.card p{color:var(--muted);font-size:14.5px;flex:1}
.card-dark{background:linear-gradient(140deg,#1e1b4b,#4c1d95);color:#fff;border:0}
.card-dark .num{color:#c4b5fd}
.card-dark p{color:#c7d2fe}
.checklist{list-style:none;margin-top:14px;display:flex;flex-direction:column;gap:10px}
.checklist li{padding-left:28px;position:relative;color:#e0e7ff;font-size:14.5px}
.checklist li::before{content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;
  border-radius:50%;background:rgba(255,255,255,.18);font-size:12px;display:flex;
  align-items:center;justify-content:center}

/* ---------- 页面头 ---------- */
.page-hero{color:#fff;padding:88px 0 92px;
  background:linear-gradient(140deg,#111436 0%,#1e1b4b 45%,#4c1d95 100%)}
.page-hero h1{font-size:clamp(30px,3.8vw,46px);font-weight:800;line-height:1.25}
.page-hero p{margin-top:16px;color:#c7d2fe;max-width:36em}
.page-hero-sm{padding:64px 0 68px}

/* ---------- 新闻卡片 ---------- */
.card-news{gap:10px}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px}
.news-meta time{font-size:12.5px;color:var(--muted)}
.chip{display:inline-block;font-size:12px;font-weight:600;color:var(--primary);
  background:#eef2ff;border-radius:999px;padding:3px 12px}
.chip i{font-style:normal;opacity:.6;margin-left:2px}
.chip-active{background:var(--grad);color:#fff}
.chip-webhook{background:#ecfdf5;color:#059669}
.read-more{color:var(--primary);font-weight:600;font-size:14px}
.news-foot{display:flex;justify-content:space-between;align-items:center}
.views{font-size:12.5px;color:var(--muted)}
.empty-tip{color:var(--muted);padding:30px 0;text-align:center}

/* ---------- 筛选/分页 ---------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.filter-bar .chip{padding:7px 18px;font-size:13.5px;transition:.2s}
.pager{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:44px;flex-wrap:wrap}
.pager a{padding:8px 16px;border:1px solid var(--line);border-radius:10px;font-size:14px;
  color:var(--ink-2);transition:.2s}
.pager a:hover{border-color:var(--primary);color:var(--primary)}
.pg-cur{padding:8px 16px;background:var(--grad);color:#fff;border-radius:10px;font-size:14px;font-weight:600}
.pg-dots{color:var(--muted)}

/* ---------- 文章页 ---------- */
.article{padding:56px 0 80px}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:26px}
.crumbs a:hover{color:var(--primary)}
.article-title{font-size:clamp(24px,3vw,34px);line-height:1.35;font-weight:800}
.article-meta{display:flex;gap:16px;align-items:center;color:var(--muted);
  font-size:13.5px;margin:18px 0 0;flex-wrap:wrap}
.article-summary{margin-top:22px;background:var(--bg-soft);border-left:4px solid var(--primary);
  border-radius:0 12px 12px 0;padding:16px 20px;color:var(--ink-2);font-size:15px}
.article-body{margin-top:30px;font-size:16px;color:var(--ink-2)}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:52px;
  padding-top:24px;border-top:1px solid var(--line)}
.article-nav a{color:var(--primary);font-weight:600;font-size:14px}
.ta-r{text-align:right}
.related{margin-top:64px}
.related h3{font-size:20px;margin-bottom:20px;font-weight:800}

/* ---------- 关于页 ---------- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.quote{font-size:19px;color:var(--ink);font-weight:600;margin:14px 0 6px}
.gallery .photo-card{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:0 2px 8px rgba(15,23,42,.04);transition:transform .25s, box-shadow .25s}
.gallery .photo-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s}
.gallery .photo-card:hover img{transform:scale(1.04)}
.gallery figcaption{padding:14px 18px;display:flex;flex-direction:column}
.gallery figcaption strong{font-size:14.5px}
.gallery figcaption span{font-size:11px;letter-spacing:.18em;color:var(--muted)}

/* ---------- 服务页 ---------- */
.service-card{position:relative;overflow:hidden}
.service-ico{font-size:30px;margin-bottom:6px}
.service-card .num{position:absolute;right:20px;top:16px;opacity:.35;font-size:26px;font-weight:800}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 18px;
  text-align:center;transition:.25s}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.step b{display:inline-flex;width:34px;height:34px;border-radius:50%;background:var(--grad);
  color:#fff;align-items:center;justify-content:center;font-size:15px;margin-bottom:10px}
.step h4{font-size:16px;margin-bottom:4px}
.step p{font-size:12.5px;color:var(--muted)}

/* ---------- 案例页 ---------- */
.case-card{gap:12px}
.case-tag{align-self:flex-start;font-size:12px;font-weight:700;color:#fff;
  background:var(--grad);border-radius:999px;padding:4px 14px}
.case-metrics{list-style:none;display:flex;gap:28px;margin-top:8px;padding-top:14px;
  border-top:1px dashed var(--line)}
.case-metrics b{display:block;font-size:22px;color:var(--primary)}
.case-metrics span{font-size:12px;color:var(--muted)}

/* ---------- 联系页 ---------- */
.contact-panel{background:linear-gradient(140deg,#1e1b4b,#4c1d95);color:#fff;
  border-radius:var(--radius);padding:38px 34px}
.contact-panel .kicker{color:#c4b5fd}
.contact-panel h2{margin-bottom:22px}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:18px}
.contact-list li{display:flex;gap:14px;align-items:flex-start}
.ci{flex:none;width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:center;font-size:17px}
.contact-list b{font-size:14px;color:#c7d2fe;display:block}
.contact-list p{font-size:15px}
.contact-list a{color:#fff;text-decoration:none;border-bottom:1px dashed rgba(255,255,255,.4)}
.contact-list a:hover{border-bottom-color:#fff}
.contact-form{display:flex;flex-direction:column;gap:16px}
.contact-form label{display:flex;flex-direction:column;gap:6px;font-size:14px;
  font-weight:600;color:var(--ink-2)}
.contact-form input,.contact-form select,.contact-form textarea{
  border:1.5px solid var(--line);border-radius:10px;padding:12px 14px;font-size:15px;
  font-family:inherit;transition:border-color .2s, box-shadow .2s;background:#fff;color:var(--ink)}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(79,70,229,.12)}
.form-tip{font-size:14px;min-height:22px}
.form-tip.ok{color:#059669}.form-tip.err{color:#dc2626}
.form-note{font-size:13px;color:#c7d2fe;margin-top:22px;opacity:.8}

/* ---------- CTA band ---------- */
.cta-band{background:var(--grad);color:#fff;padding:76px 0;text-align:center}
.cta-band h2{font-size:clamp(24px,3vw,34px);font-weight:800}
.cta-band p{margin:14px 0 28px;color:#e0e7ff}

/* ---------- 页脚 ---------- */
.footer{background:#0f172a;color:#94a3b8;padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.brand-light .brand-text strong{color:#fff}
.brand-light .brand-text em{color:#64748b}
.footer-slogan{margin-top:14px;color:#64748b;font-size:13.5px}
.footer h4{color:#e2e8f0;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-grid > div a{display:block;padding:5px 0;color:#94a3b8;font-size:13.5px}
.footer-grid > div a:hover{color:#fff}
.footer-bottom{border-top:1px solid #1e293b;padding:20px 0;display:flex;justify-content:space-between;font-size:12.5px;color:#64748b;flex-wrap:wrap;gap:8px}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease, transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}
  .hc-window{animation:none}}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;padding:70px 0 80px}
  .hero-card{max-width:440px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  .split{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .nav-toggle{display:flex}
  .nav-links{position:fixed;inset:68px 0 auto 0;background:#fff;flex-direction:column;
    align-items:stretch;gap:0;padding:8px 5vw 18px;box-shadow:0 20px 40px rgba(15,23,42,.12);
    border-top:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 4px;border-bottom:1px solid var(--bg-soft)}
  .nav-links a.active::after{display:none}
  .nav-links .btn{margin:12px 0 0}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .section{padding:60px 0}
  .stats{gap:28px}
  .footer-grid{grid-template-columns:1fr}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}