/* =========================================================
   HTG CREATIVE · 官网样式
   主色 #2C67F5（取自 HTG Logo） | 风格：克制白底 + 创意动效
   ========================================================= */
:root{
  --brand:#2C67F5;
  --brand-hover:#2959CE;
  --brand-active:#264BA6;
  --tint-15:#EAF0FE;
  --tint-08:#F3F6FD;
  --ink:#1A1A1A;
  --ink-2:#6B7280;
  --bg:#FFFFFF;
  --bg-soft:#F7F8FA;
  --border:#E5E7EB;
  --radius:14px;
  --radius-lg:22px;
  --maxw:1200px;
  --nav-h:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",
    "Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{
  font-size:13px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--brand);font-weight:600;
}
.section{padding:110px 0}
.section-soft{background:var(--bg-soft)}
.h2{font-size:clamp(28px,4vw,46px);line-height:1.15;font-weight:700;letter-spacing:-.02em}
.lead{font-size:18px;color:var(--ink-2);max-width:640px;margin-top:18px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:transform .25s var(--ease),background .25s,color .25s,box-shadow .25s;
  will-change:transform;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-2px)}
.btn-ghost{border-color:var(--border);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:50;
  display:flex;align-items:center;
  background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s,background .3s;
}
.nav.scrolled{border-color:var(--border)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:-.02em}
.brand img{height:26px;width:auto}
.brand .dot{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-size:15px;color:var(--ink-2);font-weight:500;position:relative;transition:color .2s}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--brand);transform:scaleX(0);transition:transform .25s var(--ease)}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{margin-left:8px}
.nav-links a.nav-cta{color:#fff}
.nav-links a.nav-cta:hover{color:#fff}
.nav-links a.nav-cta::after{display:none}
.menu-btn{display:none;background:none;border:0;font-size:26px;cursor:pointer;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{padding:calc(var(--nav-h) + 90px) 0 90px;position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;background:
  radial-gradient(900px 500px at 85% -10%,var(--tint-15),transparent 60%),
  radial-gradient(700px 500px at -5% 30%,var(--tint-08),transparent 55%);}
.hero .wrap{position:relative;z-index:1}
.hero h1{
  font-size:clamp(40px,7vw,82px);line-height:1.02;font-weight:800;letter-spacing:-.03em;
  max-width:14ch;
}
.hero h1 .accent{color:var(--brand)}
.hero .line{overflow:hidden;display:block}
.hero .line > span{display:block;transform:translateY(110%);opacity:0;
  animation:rise .9s var(--ease) forwards}
.hero .line:nth-child(2) > span{animation-delay:.12s}
.hero .line:nth-child(3) > span{animation-delay:.24s}
@keyframes rise{to{transform:translateY(0);opacity:1}}
.hero-rule{height:4px;width:0;background:var(--brand);border-radius:4px;margin:30px 0 26px;
  animation:draw 1s var(--ease) .5s forwards}
@keyframes draw{to{width:120px}}
.hero-sub{font-size:19px;color:var(--ink-2);max-width:560px}
.hero-actions{display:flex;gap:14px;margin-top:40px;flex-wrap:wrap}

/* ---------- Marquee 客户跑马灯 ---------- */
.marquee{margin:80px 0 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:22px 0;overflow:hidden;position:relative}
.marquee::before,.marquee::after{content:"";position:absolute;top:0;bottom:0;width:120px;z-index:2;pointer-events:none}
.marquee::before{left:0;background:linear-gradient(90deg,#fff,transparent)}
.marquee::after{right:0;background:linear-gradient(270deg,#fff,transparent)}
.marquee-track{display:flex;gap:56px;width:max-content;animation:scroll 38s linear infinite;will-change:transform}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-item{font-size:22px;font-weight:700;color:var(--ink);opacity:.55;white-space:nowrap;letter-spacing:-.01em}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:70px}
.stat{padding:28px 22px;background:var(--bg-soft);border-radius:var(--radius);text-align:center;border:1px solid var(--border)}
.stat .num{font-size:clamp(34px,4vw,52px);font-weight:800;color:var(--brand);line-height:1;letter-spacing:-.02em}
.stat .lab{margin-top:10px;font-size:14px;color:var(--ink-2)}

/* ---------- 区块头 ---------- */
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:48px;flex-wrap:wrap}

/* ---------- 服务卡 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:34px 30px;transition:transform .3s var(--ease),border-color .3s,background .3s;position:relative;overflow:hidden}
.svc:hover{transform:translateY(-6px);border-color:var(--brand);background:var(--tint-08)}
.svc .idx{font-size:14px;color:var(--brand);font-weight:700;letter-spacing:.1em}
.svc h3{font-size:22px;margin:14px 0 10px;font-weight:700}
.svc p{color:var(--ink-2);font-size:15px}
.svc .arrow{position:absolute;right:26px;bottom:24px;color:var(--brand);opacity:0;transform:translateX(-8px);transition:.3s var(--ease)}
.svc:hover .arrow{opacity:1;transform:translateX(0)}

/* ---------- 案例网格 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-soft);border:1px solid var(--border);cursor:pointer;transition:transform .35s var(--ease),border-color .35s,box-shadow .35s}
.case:hover{transform:translateY(-8px);border-color:var(--brand);box-shadow:0 18px 40px -18px rgba(44,103,245,.35)}
.case .thumb{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;background:
  linear-gradient(135deg,var(--tint-15),var(--tint-08));transition:transform .5s var(--ease)}
.case:hover .thumb{transform:scale(1.04)}
.case .thumb .ph{font-size:30px;font-weight:800;color:var(--brand);opacity:.85;letter-spacing:-.02em;text-align:center;padding:0 14px}
.case .overlay{position:absolute;inset:0;background:rgba(44,103,245,.92);color:#fff;display:flex;align-items:center;justify-content:center;gap:8px;font-weight:600;opacity:0;transition:opacity .35s}
.case:hover .overlay{opacity:1}
.case .meta{padding:20px 22px}
.case .meta .cname{font-size:19px;font-weight:700;letter-spacing:-.01em}
.case .meta .row{display:flex;justify-content:space-between;margin-top:8px;font-size:13px;color:var(--ink-2)}
.case .meta .yr{color:var(--brand);font-weight:600}
.case .meta .logo-wrap{height:42px;display:flex;align-items:center;margin-bottom:10px}
.case .meta .case-logo{max-height:38px;width:auto;object-fit:contain}
.case .meta .badge{display:inline-block;font-size:11px;line-height:1.4;padding:4px 10px;border-radius:999px;background:var(--tint-15);color:var(--brand);font-weight:600;margin-top:4px}
.case .thumb.missing{background:repeating-linear-gradient(45deg,#F3F6FD,#F3F6FD 12px,#EAF0FE 12px,#EAF0FE 24px)}
.case .thumb.missing .ph{color:var(--ink-2);opacity:.72;font-size:14px;font-weight:600;line-height:1.5}
.case .thumb img.cover{width:100%;height:100%;object-fit:cover}

/* ---------- 页脚能量脉冲 ---------- */
.pulse-bar{display:flex;gap:14px;justify-content:center;margin:60px 0 0}
.pulse-dot{width:11px;height:11px;border-radius:50%;background:var(--brand);animation:breathe 1.8s ease-in-out infinite}
.pulse-dot:nth-child(2){animation-delay:.2s}
.pulse-dot:nth-child(3){animation-delay:.4s}
.pulse-dot:nth-child(4){animation-delay:.6s}
.pulse-dot:nth-child(5){animation-delay:.8s}
@keyframes breathe{0%,100%{transform:scale(.7);opacity:.4}50%{transform:scale(1.25);opacity:1}}

/* ---------- 页脚 ---------- */
.footer{background:#0E1116;color:#C7CCD6;padding:74px 0 40px;margin-top:0}
.footer a{color:#C7CCD6;transition:color .2s}
.footer a:hover{color:#fff}
.footer .top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer .f-brand{font-size:26px;font-weight:800;color:#fff;display:flex;align-items:center;gap:10px}
.footer .f-brand img{height:26px;filter:invert(1) brightness(2)}
.footer h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:11px;font-size:14px}
.footer .slogan-en{color:var(--brand);font-weight:600;margin-top:14px;font-size:14px;letter-spacing:.02em}
.footer .bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:50px;padding-top:24px;display:flex;justify-content:space-between;font-size:13px;color:#8A92A0;flex-wrap:wrap;gap:10px}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* ---------- 关于页 ---------- */
.about-hero{padding:calc(var(--nav-h) + 80px) 0 60px}
.about-hero p{font-size:20px;max-width:760px;color:var(--ink);margin-top:20px}
.city-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:30px}
.city{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-align:center;font-weight:700}
.city span{display:block;font-size:13px;color:var(--ink-2);font-weight:500;margin-top:6px}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.value{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.value h3{font-size:18px;margin-bottom:8px}
.value p{color:var(--ink-2);font-size:15px}

/* ---------- 案例页头部筛选 ---------- */
.case-hero{padding:calc(var(--nav-h) + 80px) 0 30px}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0 44px}
.chip{padding:9px 18px;border:1px solid var(--border);border-radius:999px;font-size:14px;color:var(--ink-2);cursor:pointer;background:#fff;transition:.2s}
.chip.active,.chip:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- 案例画廊 ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.g-item{margin:0;cursor:pointer;border-radius:var(--radius-lg);overflow:hidden;background:var(--bg);border:1px solid var(--border);transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.g-item:hover{transform:translateY(-6px);border-color:var(--brand);box-shadow:0 18px 40px -18px rgba(44,103,245,.35)}
.g-item img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
.g-item .cap{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 20px}
.g-item .cap .t{font-size:16px;font-weight:600;letter-spacing:-.01em}
.g-item .cap .yr{font-size:13px;color:var(--brand);font-weight:600;white-space:nowrap}

/* ---------- Lightbox 全屏查看 ---------- */
.lb{position:fixed;inset:0;z-index:100;background:rgba(10,12,16,.93);display:none;align-items:center;justify-content:center;flex-direction:column;padding:48px 24px}
.lb.open{display:flex}
.lb img{max-width:min(1200px,90vw);max-height:72vh;border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.55)}
.lb .lb-cap{color:#fff;margin-top:18px;font-size:16px;font-weight:600;text-align:center}
.lb .lb-yr{color:rgba(255,255,255,.6);font-weight:500;margin-left:12px;font-size:14px}
.lb-btn{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s,border-color .2s}
.lb-btn:hover{background:var(--brand);border-color:var(--brand)}
.lb-prev{left:22px}
.lb-next{right:22px}
.lb-close{top:20px;transform:none}
.lb-count{position:absolute;top:28px;left:28px;color:rgba(255,255,255,.65);font-size:14px;letter-spacing:.08em}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info .item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--border)}
.contact-info .ic{width:44px;height:44px;border-radius:12px;background:var(--tint-15);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.contact-info .k{font-size:13px;color:var(--ink-2)}
.contact-info .v{font-size:18px;font-weight:600}
.form{border:1px solid var(--border);border-radius:var(--radius-lg);padding:34px}
.form label{display:block;font-size:14px;color:var(--ink-2);margin:16px 0 7px}
.form input,.form textarea{width:100%;padding:13px 15px;border:1px solid var(--border);border-radius:10px;font-size:15px;font-family:inherit;transition:border-color .2s}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--brand)}
.form textarea{resize:vertical;min-height:120px}
.form .note{font-size:13px;color:var(--ink-2);margin-top:14px}
.map-ph{aspect-ratio:16/7;background:var(--bg-soft);border:1px dashed var(--border);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;color:var(--ink-2);margin-top:24px}

/* ---------- 响应式 ---------- */
@media(max-width:980px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .svc-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
  .value-grid{grid-template-columns:1fr}
  .city-grid{grid-template-columns:repeat(3,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer .top{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--border);padding:18px 24px;gap:18px}
  .menu-btn{display:block}
  .section{padding:74px 0}
  .svc-grid,.case-grid,.stats,.gallery-grid{grid-template-columns:1fr}
  .city-grid{grid-template-columns:repeat(2,1fr)}
  .footer .top{grid-template-columns:1fr}
}