/* ============================================================
   亚星官网 - 单机游戏研发与发行 · 全站统一样式
   ============================================================ */

:root{
  --ink-950:#0A0E15;
  --ink-900:#0C1118;
  --ink-850:#101724;
  --ink-800:#131C2B;
  --ink-700:#1A2536;
  --ink-600:#243244;
  --line:rgba(232,163,61,.16);
  --line-soft:rgba(232,163,61,.10);
  --amber:#E8A33D;
  --amber-2:#F2B755;
  --amber-soft:rgba(232,163,61,.12);
  --teal:#45C4AE;
  --text:#E9EEF4;
  --text-dim:#A7B3C2;
  --text-faint:#7C8999;
  --ok:#7BD88F;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
  --maxw:1200px;
  --radius:10px;
  --shadow:0 18px 44px rgba(0,0,0,.42);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--ink-900);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ---------- 顶部条 ---------- */
.topbar{
  background:var(--ink-950);
  border-bottom:1px solid var(--line-soft);
  font-size:13px;color:var(--text-dim);
}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:34px;flex-wrap:wrap}
.topbar a{color:var(--text-dim);transition:color .2s}
.topbar a:hover{color:var(--amber)}
.topbar .top-links{display:flex;gap:18px}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(12,17,24,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px}
.logo .logo-mark{width:34px;height:34px;flex:none}
.logo .logo-text{font-size:20px;font-weight:800;letter-spacing:2px;color:#fff}
.logo .logo-text b{color:var(--amber);font-weight:800}
.logo small{display:block;font-size:10px;color:var(--text-faint);letter-spacing:3px;font-weight:400}
.nav{display:flex;align-items:center;gap:4px}
.nav a{
  padding:8px 14px;font-size:15px;color:var(--text-dim);border-radius:6px;
  transition:color .2s,background .2s;white-space:nowrap;
}
.nav a:hover{color:#fff;background:rgba(232,163,61,.08)}
.nav a.active{color:var(--amber);background:var(--amber-soft);font-weight:600}
.nav .cta{
  margin-left:10px;background:var(--amber);color:#161006;font-weight:700;
  border-radius:6px;padding:8px 16px;
}
.nav .cta:hover{background:var(--amber-2);color:#161006}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);background:none;border-radius:6px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{width:20px;height:2px;background:var(--amber);display:block;transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.crumbs{background:var(--ink-850);border-bottom:1px solid var(--line-soft);font-size:13px;color:var(--text-faint)}
.crumbs .container{display:flex;align-items:center;gap:8px;height:42px;overflow:hidden}
.crumbs a{color:var(--text-dim)}
.crumbs a:hover{color:var(--amber)}
.crumbs .sep{color:var(--text-faint)}
.crumbs .cur{color:var(--amber)}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:74px 0 60px;text-align:center;
  border-bottom:1px solid var(--line-soft);
}
.page-hero .bg{position:absolute;inset:0;z-index:0;opacity:.16;object-fit:cover;width:100%;height:100%}
.page-hero:before{content:"";position:absolute;inset:0;z-index:1;background:radial-gradient(80% 120% at 50% 0%,rgba(232,163,61,.10),transparent 60%),linear-gradient(180deg,rgba(12,17,24,.4),var(--ink-900))}
.page-hero .container{position:relative;z-index:2}
.page-hero .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--amber);font-size:13px;letter-spacing:3px;margin-bottom:14px;text-transform:uppercase}
.page-hero .eyebrow:before,.page-hero .eyebrow:after{content:"";width:26px;height:1px;background:var(--amber);opacity:.5}
.page-hero h1{font-size:42px;line-height:1.25;font-weight:800;letter-spacing:1px;color:#fff}
.page-hero h1 em{font-style:normal;color:var(--amber)}
.page-hero p{max-width:760px;margin:16px auto 0;color:var(--text-dim);font-size:16px}

/* ---------- 区块通用 ---------- */
.section{padding:76px 0}
.section.alt{background:var(--ink-850)}
.section.tint{background:linear-gradient(180deg,var(--ink-900),var(--ink-850))}
.sec-head{max-width:820px;margin:0 auto 44px;text-align:center}
.sec-head .tag{display:inline-block;font-size:12px;letter-spacing:3px;color:var(--amber);border:1px solid var(--line);border-radius:999px;padding:4px 14px;margin-bottom:14px}
.sec-head h2{font-size:30px;font-weight:800;color:#fff;letter-spacing:.5px;line-height:1.3}
.sec-head h2 em{font-style:normal;color:var(--amber)}
.sec-head p{color:var(--text-dim);margin-top:12px;font-size:15px}
.sec-head.left{text-align:left;margin-left:0;margin-right:0}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:8px;font-size:15px;font-weight:600;transition:.22s;border:1px solid transparent}
.btn-amber{background:var(--amber);color:#1a1205}
.btn-amber:hover{background:var(--amber-2);transform:translateY(-2px)}
.btn-ghost{border-color:var(--line);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber);transform:translateY(-2px)}
.btn-block{width:100%;justify-content:center}

/* ---------- 首页 Hero ---------- */
.hero{
  position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;
  border-bottom:1px solid var(--line-soft);
}
.hero .hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;filter:saturate(.9)}
.hero:after{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(10,14,21,.55) 0%,rgba(12,17,24,.62) 45%,var(--ink-900) 100%)}
.hero .container{position:relative;z-index:2;padding-top:60px;padding-bottom:90px}
.hero .kicker{display:flex;align-items:center;gap:12px;color:var(--amber);font-size:13px;letter-spacing:4px;margin-bottom:22px}
.hero .kicker:before{content:"";width:40px;height:2px;background:var(--amber)}
.hero h1{font-size:56px;line-height:1.18;font-weight:800;letter-spacing:1px;color:#fff;max-width:15em}
.hero h1 em{font-style:normal;color:var(--amber)}
.hero .lead{max-width:620px;margin:22px 0 30px;color:#c6d0dc;font-size:17px}
.hero .ctas{display:flex;gap:16px;flex-wrap:wrap}
.hero .hero-meta{display:flex;gap:34px;margin-top:52px;flex-wrap:wrap}
.hero .hm b{display:block;font-size:26px;color:var(--amber);font-weight:800}
.hero .hm span{font-size:13px;color:var(--text-dim)}
.hero .scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:3;color:var(--text-faint);font-size:12px;letter-spacing:2px;display:flex;flex-direction:column;align-items:center;gap:8px}
.hero .scroll-hint:after{content:"";width:1px;height:34px;background:linear-gradient(var(--amber),transparent)}

/* ---------- 特色条 ---------- */
.feat-strip{border-bottom:1px solid var(--line-soft);background:var(--ink-850)}
.feat-strip .container{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.feat-strip .fs{display:flex;align-items:center;gap:14px;padding:26px 18px;border-right:1px solid var(--line-soft)}
.feat-strip .fs:last-child{border-right:none}
.feat-strip .fs svg{width:34px;height:34px;flex:none;color:var(--amber)}
.feat-strip .fs b{display:block;font-size:16px;color:#fff}
.feat-strip .fs span{font-size:13px;color:var(--text-dim)}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:22px}
.grid.g2{grid-template-columns:repeat(2,1fr)}
.grid.g3{grid-template-columns:repeat(3,1fr)}
.grid.g4{grid-template-columns:repeat(4,1fr)}

.card{
  background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius);
  overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-5px);border-color:var(--line);box-shadow:var(--shadow)}
.card .card-img{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--ink-700)}
.card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .card-img img{transform:scale(1.06)}
.card .card-img .cat{position:absolute;top:12px;left:12px;z-index:2;background:var(--ink-950);color:var(--amber);font-size:12px;padding:4px 10px;border-radius:4px;border:1px solid var(--line)}
.card .card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.card .card-body h3{font-size:18px;color:#fff;margin-bottom:8px;line-height:1.4}
.card .card-body h3 a:hover{color:var(--amber)}
.card .card-body p{color:var(--text-dim);font-size:14px;flex:1}
.card .card-more{margin-top:16px;display:inline-flex;align-items:center;gap:6px;color:var(--amber);font-size:14px;font-weight:600}
.card .card-more:hover{gap:10px;transition:.2s}

/* ---------- 业务模块（首页/核心业务） ---------- */
.biz-grid{grid-template-columns:repeat(3,1fr);gap:24px}
.biz-item{
  background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:30px 28px;position:relative;transition:.25s;display:flex;flex-direction:column;
}
.biz-item:hover{border-color:var(--line);transform:translateY(-5px);box-shadow:var(--shadow)}
.biz-item .no{position:absolute;top:22px;right:24px;font-size:44px;font-weight:800;color:rgba(232,163,61,.10);line-height:1}
.biz-item .ic{width:52px;height:52px;border-radius:10px;background:var(--amber-soft);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--amber);margin-bottom:18px}
.biz-item .ic svg{width:28px;height:28px}
.biz-item h3{font-size:19px;color:#fff;margin-bottom:10px}
.biz-item p{color:var(--text-dim);font-size:14px;flex:1}
.biz-item .biz-link{margin-top:18px;color:var(--amber);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.biz-item .biz-link:hover{gap:10px;transition:.2s}

/* ---------- 图文并排 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split .split-media{position:relative}
.split .split-media img{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line-soft)}
.split .split-media .badge{
  position:absolute;right:-14px;bottom:-18px;background:var(--amber);color:#1a1205;
  border-radius:10px;padding:16px 20px;font-weight:800;box-shadow:var(--shadow);text-align:center;line-height:1.3
}
.split .split-media .badge small{display:block;font-size:11px;font-weight:600;opacity:.75}
.split h2{font-size:30px;color:#fff;font-weight:800;line-height:1.3;margin-bottom:16px}
.split h2 em{font-style:normal;color:var(--amber)}
.split p{color:var(--text-dim);margin-bottom:14px}
.split .points{margin:20px 0 26px}
.split .points li{display:flex;gap:12px;align-items:flex-start;margin-bottom:12px;color:var(--text-dim)}
.split .points li svg{width:20px;height:20px;flex:none;color:var(--teal);margin-top:3px}

/* ---------- 数字统计 ---------- */
.stat-strip{background:var(--ink-850);border-block:1px solid var(--line-soft)}
.stat-strip .container{display:grid;grid-template-columns:repeat(4,1fr);text-align:center}
.stat-strip .stat{padding:40px 20px;border-right:1px solid var(--line-soft)}
.stat-strip .stat:last-child{border-right:none}
.stat-strip .stat b{font-size:42px;font-weight:800;color:var(--amber);display:block;line-height:1.1}
.stat-strip .stat span{color:var(--text-dim);font-size:14px}

/* ---------- 引言语（客户背书） ---------- */
.quote-strip{background:var(--ink-850);border-block:1px solid var(--line-soft)}
.quote-strip .container{display:flex;gap:30px;align-items:stretch;flex-wrap:wrap}
.quote-strip .q{flex:1;min-width:250px;border-left:3px solid var(--amber);background:var(--ink-800);padding:24px 26px;border-radius:0 var(--radius) var(--radius) 0}
.quote-strip .q p{color:var(--text);font-size:15px;font-style:normal;margin-bottom:12px}
.quote-strip .q cite{color:var(--text-faint);font-size:13px;font-style:normal}
.quote-strip .q cite b{color:var(--amber);font-weight:600}

/* ---------- 时间轴 ---------- */
.timeline{max-width:860px;margin:0 auto}
.tl-row{display:grid;grid-template-columns:110px 40px 1fr;gap:0}
.tl-row .tl-time{text-align:right;padding:10px 14px 30px 0;color:var(--amber);font-weight:700;font-size:15px}
.tl-row .tl-axis{position:relative}
.tl-row .tl-axis:before{content:"";position:absolute;left:50%;top:6px;bottom:0;width:2px;background:var(--line);transform:translateX(-50%)}
.tl-row:last-child .tl-axis:before{display:none}
.tl-row .tl-dot{width:13px;height:13px;border-radius:50%;background:var(--ink-900);border:3px solid var(--amber);position:relative;top:16px;left:50%;transform:translateX(-50%)}
.tl-row .tl-body{padding:6px 0 34px 24px}
.tl-row .tl-body h3{color:#fff;font-size:17px;margin-bottom:6px}
.tl-row .tl-body p{color:var(--text-dim);font-size:14px;max-width:520px}

/* ---------- 价格/标签徽章 ---------- */
.badge-row{display:flex;gap:10px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--ink-800);border:1px solid var(--line-soft);border-radius:999px;padding:6px 14px;font-size:13px;color:var(--text-dim)}
.chip svg{width:15px;height:15px;color:var(--teal)}

/* ---------- 客户背书卡片 ---------- */
.kf-card{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius);padding:30px;display:flex;flex-direction:column;transition:.25s}
.kf-card:hover{border-color:var(--line);transform:translateY(-4px)}
.kf-card .quote-mark{font-size:60px;line-height:1;color:var(--amber);opacity:.4;font-family:Georgia,serif;height:40px}
.kf-card p{color:var(--text-dim);font-size:15px;flex:1;margin:6px 0 22px}
.kf-card .kf-foot{display:flex;align-items:center;gap:14px;border-top:1px solid var(--line-soft);padding-top:18px}
.kf-card .kf-ava{width:46px;height:46px;border-radius:50%;background:var(--amber-soft);border:1px solid var(--line);color:var(--amber);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;flex:none}
.kf-card .kf-foot b{display:block;color:#fff;font-size:15px}
.kf-card .kf-foot span{color:var(--text-faint);font-size:13px}
.kf-card .stars{color:var(--amber);font-size:15px;letter-spacing:2px;margin-top:14px}

/* ---------- 新闻列表 ---------- */
.news-list{max-width:980px;margin:0 auto}
.news-item{display:grid;grid-template-columns:300px 1fr;gap:26px;align-items:center;background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius);padding:18px;margin-bottom:22px;transition:.25s}
.news-item:hover{border-color:var(--line);transform:translateY(-3px);box-shadow:var(--shadow)}
.news-item .ni-img{border-radius:8px;overflow:hidden;aspect-ratio:16/10;background:var(--ink-700)}
.news-item .ni-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-item:hover .ni-img img{transform:scale(1.05)}
.news-item .ni-body h3{color:#fff;font-size:19px;margin-bottom:8px}
.news-item .ni-body h3 a:hover{color:var(--amber)}
.news-item .ni-body p{color:var(--text-dim);font-size:14px;margin-bottom:12px}
.news-item .ni-meta{display:flex;gap:16px;flex-wrap:wrap;color:var(--text-faint);font-size:13px}
.news-item .ni-meta b{color:var(--amber);font-weight:600}

/* ---------- 表单 ---------- */
.form-card{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius);padding:34px;max-width:640px;margin:0 auto}
.form-card h3{color:#fff;font-size:22px;margin-bottom:6px}
.form-card .sub{color:var(--text-dim);font-size:14px;margin-bottom:24px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:18px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;color:var(--text-dim)}
.field label b{color:var(--amber)}
.field input,.field textarea,.field select{
  background:var(--ink-900);border:1px solid var(--ink-600);border-radius:7px;color:var(--text);
  padding:12px 14px;font-size:15px;font-family:inherit;transition:border-color .2s;outline:none
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--amber)}
.field textarea{min-height:130px;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--amber) 50%),linear-gradient(135deg,var(--amber) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px;background-repeat:no-repeat}
.field .hint{font-size:12px;color:var(--text-faint)}
.form-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:6px}

/* ---------- 联系信息卡 ---------- */
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.contact-card{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius);padding:30px 26px;text-align:center;transition:.25s}
.contact-card:hover{border-color:var(--line);transform:translateY(-4px)}
.contact-card .cc-ic{width:54px;height:54px;margin:0 auto 16px;border-radius:50%;background:var(--amber-soft);border:1px solid var(--line);color:var(--amber);display:flex;align-items:center;justify-content:center}
.contact-card .cc-ic svg{width:26px;height:26px}
.contact-card h3{color:#fff;font-size:17px;margin-bottom:8px}
.contact-card p{color:var(--text-dim);font-size:14px;line-height:1.7}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-item summary{list-style:none;display:flex;align-items:center;gap:14px;padding:18px 22px;cursor:pointer;color:#fff;font-size:16px;font-weight:600}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .fa{width:26px;height:26px;flex:none;border:1px solid var(--line);border-radius:50%;color:var(--amber);display:flex;align-items:center;justify-content:center;font-weight:700;transition:.2s}
.faq-item[open] summary .fa{background:var(--amber);color:#1a1205}
.faq-item .faq-body{padding:0 22px 20px 62px;color:var(--text-dim);font-size:14px}

/* ---------- 合作伙伴 / Logo条 ---------- */
.logo-strip{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.logo-strip .pl{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:8px;padding:16px 24px;color:var(--text-dim);font-size:15px;font-weight:700;letter-spacing:1px;transition:.2s}
.logo-strip .pl:hover{color:var(--amber);border-color:var(--line)}

/* ---------- CTA 带 ---------- */
.cta-band{background:linear-gradient(135deg,var(--ink-800),var(--ink-850));border-block:1px solid var(--line);padding:70px 0;position:relative;overflow:hidden}
.cta-band:before{content:"";position:absolute;inset:0;background:radial-gradient(60% 120% at 50% 0%,rgba(232,163,61,.12),transparent 60%)}
.cta-band .container{position:relative;z-index:1;text-align:center}
.cta-band h2{font-size:32px;color:#fff;font-weight:800;margin-bottom:12px}
.cta-band h2 em{font-style:normal;color:var(--amber)}
.cta-band p{color:var(--text-dim);max-width:640px;margin:0 auto 30px}
.cta-band .ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-950);border-top:1px solid var(--line);padding:60px 0 0;color:var(--text-dim)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:40px}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:1px}
.footer-grid .f-about p{font-size:14px;margin-bottom:18px;max-width:320px}
.footer-grid ul li{margin-bottom:10px;font-size:14px}
.footer-grid ul a:hover{color:var(--amber)}
.footer-grid .f-contact li{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;font-size:14px}
.footer-grid .f-contact svg{width:17px;height:17px;flex:none;color:var(--amber);margin-top:4px}
.footer-bottom{border-top:1px solid var(--line-soft);padding:20px 0;font-size:13px;color:var(--text-faint);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer-bottom a:hover{color:var(--amber)}

/* ---------- 回顶 / Toast ---------- */
.to-top{position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:10px;background:var(--ink-800);border:1px solid var(--line);color:var(--amber);font-size:20px;z-index:90;opacity:0;pointer-events:none;transition:.3s}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{background:var(--amber);color:#1a1205}
#toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);background:var(--ink-800);border:1px solid var(--amber);color:#fff;padding:13px 24px;border-radius:8px;font-size:14px;z-index:200;opacity:0;pointer-events:none;transition:.3s;box-shadow:var(--shadow)}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 移动端导航 ---------- */
.mobile-nav{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(10,14,21,.98);z-index:99;padding:90px 28px 30px;overflow:auto}
.mobile-nav a{display:block;padding:15px 8px;font-size:20px;color:var(--text-dim);border-bottom:1px solid var(--line-soft)}
.mobile-nav a:hover,.mobile-nav a.active{color:var(--amber)}
.mobile-nav .cta{margin-top:20px;text-align:center}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .grid.g4{grid-template-columns:repeat(2,1fr)}
  .biz-grid{grid-template-columns:repeat(2,1fr)}
  .contact-cards{grid-template-columns:1fr 1fr}
  .feat-strip .container{grid-template-columns:repeat(2,1fr)}
  .feat-strip .fs:nth-child(2){border-right:none}
  .feat-strip .fs:nth-child(-n+2){border-bottom:1px solid var(--line-soft)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .nav{display:none}
  .nav-toggle{display:flex}
  .nav-open .nav{display:flex;flex-direction:column;position:fixed;inset:0;background:rgba(10,14,21,.98);z-index:98;padding:90px 24px;align-items:stretch;gap:6px}
  .nav-open .nav a{padding:16px 10px;font-size:19px;border-bottom:1px solid var(--line-soft);border-radius:0}
  .nav-open .nav .cta{margin-left:0;margin-top:16px;text-align:center}
  .page-hero h1{font-size:32px}
  .hero h1{font-size:38px}
  .split{grid-template-columns:1fr;gap:34px}
  .grid.g3{grid-template-columns:1fr 1fr}
  .news-item{grid-template-columns:1fr}
  .section{padding:56px 0}
  .sec-head h2{font-size:25px}
}
@media(max-width:560px){
  .grid.g2,.grid.g3,.grid.g4,.biz-grid{grid-template-columns:1fr}
  .contact-cards{grid-template-columns:1fr}
  .stat-strip .container{grid-template-columns:repeat(2,1fr)}
  .stat-strip .stat{border-bottom:1px solid var(--line-soft)}
  .form-grid{grid-template-columns:1fr}
  .hero h1{font-size:30px}
  .footer-grid{grid-template-columns:1fr}
  .tl-row{grid-template-columns:84px 30px 1fr}
  .top-links{display:none}
  .field input,.field textarea,.field select{font-size:16px}
}