:root{
  --ink:#0E1B2C; --navy:#16263F; --accent:#C9A24B; --accent-2:#E8C879;
  --bg:#FFFFFF; --paper:#F7F8FA; --muted:#6B7280; --line:#E5E7EB;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
.langshow[lang="en"]{display:none}
body.en .langshow[lang="zh"]{display:none}
body.en .langshow[lang="en"]{display:inline}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(14,27,44,.96);backdrop-filter:blur(6px);color:#fff}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:700;font-size:20px;letter-spacing:1px;color:#fff}
.brand span{color:var(--accent-2)}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-size:15px;color:#D6DEE8;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--accent-2)}
.lang-btn{background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:999px;padding:5px 12px;font-size:13px;cursor:pointer}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer}
.hamburger span{width:24px;height:2px;background:#fff;display:block}

/* Hero */
.hero{background:linear-gradient(135deg,var(--navy),var(--ink));color:#fff;padding:84px 0 72px}
.hero h1{font-size:40px;line-height:1.25;margin:0 0 16px;max-width:760px}
.hero p{font-size:17px;color:#C7D0DB;max-width:640px;margin:0 0 26px}
.hero .accent{color:var(--accent-2)}
.btn{display:inline-block;background:var(--accent);color:#1a1305;font-weight:600;padding:12px 26px;border-radius:8px;font-size:15px;transition:transform .15s,background .2s}
.btn:hover{background:var(--accent-2);transform:translateY(-1px)}
.btn.ghost{background:transparent;border:1px solid rgba(255,255,255,.35);color:#fff}

/* Sections */
.section{padding:64px 0}
.section.alt{background:var(--paper)}
.section h2{font-size:28px;margin:0 0 8px;color:var(--navy)}
.section .lead{color:var(--muted);max-width:680px;margin:0 0 32px}
.eyebrow{color:var(--accent);font-weight:600;font-size:13px;letter-spacing:2px;text-transform:uppercase;margin-bottom:8px}

/* Grids */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:0 8px 24px rgba(14,27,44,.08);transform:translateY(-2px)}
.card h3{margin:0 0 8px;color:var(--navy);font-size:18px}
.card p{margin:0;color:var(--muted);font-size:14px}
.card .ico{width:44px;height:44px;border-radius:10px;background:rgba(201,162,75,.14);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px}

/* Logo wall */
.logos{display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:center;opacity:.85}
.logos .logo{background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px 20px;font-weight:600;color:var(--navy);min-width:120px;text-align:center}

/* Tags */
.tag{display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;margin:2px 4px 2px 0}
.tag.a{background:rgba(201,162,75,.16);color:#8a6d1f;border:1px solid rgba(201,162,75,.4)}
.tag.b{background:rgba(30,122,70,.12);color:#1E7A46;border:1px solid rgba(30,122,70,.35)}

/* Timeline */
.timeline{position:relative;padding-left:28px;border-left:2px solid var(--line)}
.timeline .item{position:relative;margin-bottom:26px}
.timeline .item::before{content:"";position:absolute;left:-35px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--accent);border:3px solid #fff;box-shadow:0 0 0 2px var(--accent)}
.timeline .yr{font-weight:700;color:var(--navy)}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin:0 0 8px}
.stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 16px;text-align:center}
.stat .num{font-size:30px;font-weight:700;color:var(--navy);line-height:1.1}
.stat .num .unit{font-size:15px;font-weight:600;color:var(--accent);margin-left:2px}
.stat .lbl{margin-top:8px;font-size:13px;color:var(--muted)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:minmax(0,860px);gap:36px;justify-content:center}
.field{margin-bottom:14px}
.field label{display:block;font-size:14px;color:var(--navy);margin-bottom:6px}
.field input,.field textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit}
.field textarea{min-height:120px;resize:vertical}
.info-row{margin-bottom:14px}
.info-row b{color:var(--navy);display:block;font-size:14px}
.info-row span{color:var(--muted);font-size:14px}

/* Footer */
.site-footer{background:var(--ink);color:#9AA3AE;padding:40px 0;font-size:13px}
.site-footer a{color:#C7D0DB}
.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px}
.footer-grid .col h4{color:#fff;font-size:14px;margin:0 0 10px}

/* 404 */
.center{min-height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px}
.center h1{font-size:72px;color:var(--accent);margin:0}

@media(max-width:880px){
  .grid-3,.grid-2,.contact-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:30px}
  .nav-links{position:fixed;inset:64px 0 auto 0;flex-direction:column;background:var(--ink);padding:18px 24px;gap:14px;transform:translateY(-130%);transition:transform .25s}
  .nav-links.open{transform:translateY(0)}
  .hamburger{display:flex}
}

/* ===== 案例照片墙 / 视觉条 ===== */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}
.gallery.g2{grid-template-columns:repeat(2,1fr)}
.shot{position:relative;margin:0;border-radius:12px;overflow:hidden;border:1px solid rgba(255,255,255,.14);aspect-ratio:4/3;background:#0A1524}
.shot.tall{aspect-ratio:3/4}
.shot img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease}
.shot:hover img{transform:scale(1.05)}
.shot figcaption{position:absolute;left:0;right:0;bottom:0;padding:30px 14px 12px;background:linear-gradient(transparent,rgba(6,13,24,.88));font-size:13px;color:#E8EEF5;letter-spacing:.5px}
.shot.wide{aspect-ratio:auto}
.shot.wide img{height:auto;max-height:460px}
@media(max-width:880px){.gallery{grid-template-columns:repeat(2,1fr)}.gallery.g2{grid-template-columns:1fr}}
@media(max-width:560px){.gallery{grid-template-columns:1fr}}

/* ===== 案例照片墙 v2：4 列小格密排（低分辨率源也清晰）===== */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:24px}
.gallery.g3{grid-template-columns:repeat(3,1fr)}
.gallery .shot{border-radius:8px;aspect-ratio:4/3;border:1px solid rgba(255,255,255,.10)}
.gallery .shot img{transition:transform .3s ease}
.gallery .shot:hover img{transform:scale(1.04)}
.gallery .shot figcaption{padding:20px 10px 8px;font-size:12px;letter-spacing:.3px}
@media(max-width:880px){.gallery{grid-template-columns:repeat(3,1fr)}.gallery.g3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.gallery{grid-template-columns:repeat(2,1fr)}}

/* ===== 品牌合作伙伴 logo 墙（斜卡 WebP，来自公司简介 P）===== */
.partners-grid{display:grid;grid-template-columns:repeat(9,1fr);gap:10px;margin-top:30px;align-items:center}
.partners-grid img{width:100%;height:auto;display:block;filter:drop-shadow(0 4px 10px rgba(0,0,0,.28));transition:transform .25s ease}
.partners-grid img:hover{transform:translateY(-4px)}
@media(max-width:1080px){.partners-grid{grid-template-columns:repeat(5,1fr)}}
@media(max-width:640px){.partners-grid{grid-template-columns:repeat(3,1fr);gap:8px}}

/* 联系页静态地图 + 备案链接 */
.map-box{margin-top:16px;border-radius:10px;overflow:hidden;border:1px solid var(--line);box-shadow:0 4px 14px rgba(14,27,44,.08)}
.map-box img{width:100%;height:auto;display:block;transition:transform .3s ease}
.map-box a:hover img{transform:scale(1.02)}
.info-row a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.info-row a:hover{color:#8a6d1f}
.site-footer a{text-decoration:underline;text-underline-offset:3px}
.site-footer a:hover{color:var(--accent-2)}