/* ═══ 汕头维修 设计系统 ═══
   视觉规范：科技风 / 纯白底色 / 蓝色主调 / 金色点缀 */
:root{
  --blue:#1663d9; --blue-deep:#0b3d91; --blue-light:#3b82f6; --blue-soft:#eaf1fd;
  --gold:#c9a227; --gold-soft:#faf3dd;
  --ink:#1f2937; --ink2:#4b5563; --line:#e5e7eb;
  --bg:#ffffff; --panel:#f8fafc;
  --green:#0f8a5f; --red:#c0392b;
  --radius:12px;
  --shadow:0 2px 16px rgba(11,61,145,.08);
  --shadow-lg:0 8px 32px rgba(11,61,145,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Segoe UI",sans-serif;background:var(--bg);color:var(--ink);line-height:1.75;font-size:15.5px}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-deep)}
img{max-width:100%}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
main{min-height:60vh}

/* ── 顶部条 ── */
.topbar{background:var(--blue-deep);color:#cfe0ff;font-size:12.5px;padding:5px 0}
.topbar .container{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.topbar b{color:#fff;font-weight:600}

/* ── 导航 ── */
header.nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;box-shadow:0 1px 8px rgba(11,61,145,.05)}
header.nav .container{display:flex;align-items:center;gap:26px;height:112px}
.logo{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;color:var(--blue-deep);letter-spacing:1px}
.logo .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--blue-deep),var(--blue-light));display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px}
.logo .logo-icon{width:40px;height:40px;border-radius:10px;object-fit:cover;box-shadow:0 2px 10px rgba(11,61,145,.25)}
.logo-full{display:block;line-height:0;flex:none}
.logo-full img{display:block;width:230px;height:auto;max-height:92px;border-radius:12px;object-fit:contain;box-shadow:0 2px 10px rgba(11,61,145,.2)}
.f-logo-img{display:block;width:210px;max-width:100%;border-radius:12px;margin-bottom:14px;box-shadow:0 4px 18px rgba(0,0,0,.35)}
.logo small{font-size:11px;color:var(--gold);font-weight:600;letter-spacing:2px}
nav.menu{display:flex;gap:2px;margin-left:auto}
nav.menu a{color:var(--ink);font-size:14.5px;padding:6px 13px;border-radius:8px;font-weight:500}
nav.menu a:hover,nav.menu a.on{color:var(--blue);background:var(--blue-soft)}
.nav-cta{display:flex;gap:10px;align-items:center}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:8px;font-size:18px;padding:4px 10px;color:var(--blue-deep)}

/* ── 按钮 ── */
.btn{display:inline-block;border-radius:9px;padding:10px 22px;font-size:14.5px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:.15s;text-align:center}
.btn-blue{background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;box-shadow:0 3px 12px rgba(22,99,217,.3)}
.btn-blue:hover{color:#fff;transform:translateY(-1px);box-shadow:0 6px 18px rgba(22,99,217,.38)}
.btn-gold{background:linear-gradient(135deg,#d9b640,var(--gold));color:#3d2f00;box-shadow:0 3px 12px rgba(201,162,39,.35)}
.btn-gold:hover{color:#2e2300;transform:translateY(-1px)}
.btn-line{border-color:var(--blue);color:var(--blue);background:#fff}
.btn-line:hover{background:var(--blue-soft)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.85);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-sm{padding:5px 13px;font-size:13px;border-radius:7px}

/* ── Hero ── */
.hero{background:linear-gradient(135deg,#0b3d91 0%,#1663d9 55%,#3b82f6 100%);color:#fff;padding:64px 0 72px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(217,182,64,.25),transparent 65%)}
.hero::after{content:"";position:absolute;left:-80px;bottom:-140px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.12),transparent 65%)}
.hero .container{position:relative;z-index:2}
.hero .tag{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:4px 16px;font-size:12.5px;letter-spacing:1.5px;margin-bottom:18px}
.hero h1{font-size:36px;line-height:1.35;margin-bottom:16px;max-width:720px}
.hero h1 .gold{color:#f0d070}
.hero p.lead{color:#dbeafe;font-size:16.5px;max-width:680px;margin-bottom:26px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:38px;flex-wrap:wrap}
.hero-stats .st b{display:block;font-size:26px;color:#f0d070}
.hero-stats .st span{font-size:13px;color:#bfdbfe}

/* ── 区块 ── */
section.sec{padding:56px 0}
section.sec.gray{background:var(--panel)}
.sec-head{text-align:center;margin-bottom:36px}
.sec-head .kicker{color:var(--gold);font-size:13px;font-weight:700;letter-spacing:3px;margin-bottom:6px}
.sec-head h2{font-size:27px;color:var(--blue-deep)}
.sec-head p{color:var(--ink2);font-size:14.5px;margin-top:6px}

/* ── 卡片网格 ── */
.grid{display:grid;gap:18px}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:.18s;position:relative}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#bcd3f7}
.card .ico{width:46px;height:46px;border-radius:11px;background:var(--blue-soft);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.card h3{font-size:17px;color:var(--ink);margin-bottom:7px}
.card p{color:var(--ink2);font-size:13.5px;line-height:1.7}
.card .price{color:var(--gold);font-weight:700;font-size:13px;margin-top:10px;display:block}
.card .go{display:inline-block;margin-top:12px;font-size:13px;font-weight:600}
.card::after{content:"";position:absolute;top:0;left:24px;right:24px;height:2.5px;border-radius:2px;background:linear-gradient(90deg,var(--blue),var(--gold));opacity:0;transition:.18s}
.card:hover::after{opacity:1}

/* ── 面包屑 ── */
.crumbs{font-size:13px;color:var(--ink2);padding:14px 0}
.crumbs a{color:var(--ink2)}
.crumbs a:hover{color:var(--blue)}
.crumbs .sep{margin:0 7px;color:#c3cbd6}

/* ── 文章/内容页 ── */
.article-wrap{max-width:860px;margin:0 auto}
.article-wrap h1{font-size:29px;color:var(--blue-deep);line-height:1.4;margin:8px 0 14px}
.answer-first{background:linear-gradient(135deg,var(--blue-soft),#f4f8ff);border-left:4px solid var(--blue);border-radius:0 10px 10px 0;padding:16px 20px;font-size:15.5px;color:#17356b;margin:16px 0 6px;position:relative}
.answer-first::before{content:"核心答案";position:absolute;top:-11px;left:14px;background:var(--gold);color:#3d2f00;font-size:11px;font-weight:700;border-radius:5px;padding:1px 9px;letter-spacing:1px}
.article-meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--ink2);font-size:13px;margin:14px 0 8px;align-items:center}
.article-meta .fresh{background:var(--gold-soft);border:1px solid #ead9a0;color:#8a6d10;border-radius:6px;padding:1px 9px;font-size:12px;font-weight:600}
.article-body{margin-top:18px}
.article-body h2{font-size:21px;color:var(--blue-deep);margin:32px 0 12px;padding-left:13px;border-left:4.5px solid var(--blue);line-height:1.45}
.article-body h3{font-size:17px;margin:22px 0 9px;color:#0f172a}
.article-body p{margin:11px 0}
.article-body ul,.article-body ol{margin:10px 0 16px 24px}
.article-body li{margin:6px 0}
.article-body table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px;background:#fff}
.article-body th{background:var(--blue-deep);color:#fff;text-align:left;padding:9px 13px;font-weight:600}
.article-body td{border:1px solid var(--line);padding:9px 13px}
.article-body tr:nth-child(even) td{background:var(--panel)}

/* ── FAQ ── */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:12px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:15px 20px;font-weight:600;font-size:15px;color:var(--ink);list-style:none;display:flex;align-items:center;gap:10px}
.faq-item summary::before{content:"Q";flex:none;width:22px;height:22px;border-radius:6px;background:var(--blue);color:#fff;font-size:12.5px;display:flex;align-items:center;justify-content:center;font-weight:700}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item .a{padding:0 20px 16px 52px;color:var(--ink2);font-size:14.5px}
.faq-item[open]{border-color:var(--blue);box-shadow:var(--shadow)}

/* ── 表单 ── */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px;max-width:640px;margin:0 auto}
.f-row{margin-bottom:18px}
.f-row label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:var(--ink)}
.f-row label .req{color:var(--red)}
.f-row input[type=text],.f-row input[type=tel],.f-row input[type=number],.f-row select,.f-row textarea{width:100%;border:1.5px solid var(--line);border-radius:9px;padding:10px 13px;font-size:14.5px;font-family:inherit;background:#fff;transition:.15s}
.f-row input:focus,.f-row select:focus,.f-row textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}
.f-row textarea{min-height:110px;resize:vertical}
.f-row .hint{font-size:12.5px;color:var(--ink2);margin-top:4px}
.checks{display:flex;flex-wrap:wrap;gap:8px 16px}
.checks label{font-weight:400;font-size:14px;display:flex;align-items:center;gap:5px;margin:0}
.alert{border-radius:10px;padding:13px 18px;margin-bottom:18px;font-size:14px;border:1px solid}
.alert.err{background:#fdecea;border-color:#f3c1ba;color:#a93226}
.alert.ok{background:#e7f6f0;border-color:#b5e3d0;color:#0b6b49}
.radio-row{display:flex;gap:16px}
.radio-row label{font-weight:400;display:flex;align-items:center;gap:5px}

/* ── CTA 横幅 ── */
.cta-band{background:linear-gradient(135deg,var(--blue-deep),var(--blue));border-radius:16px;color:#fff;padding:38px 42px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;box-shadow:var(--shadow-lg)}
.cta-band h3{font-size:22px;margin-bottom:6px}
.cta-band p{color:#cfe0ff;font-size:14px}
.cta-band .phone{font-size:26px;font-weight:800;color:#f0d070;letter-spacing:1px}

/* ── 页脚 ── */
footer.site{background:#0b1f4d;color:#a9bee8;margin-top:64px}
footer.site .container{padding:44px 20px 26px}
.f-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:32px}
footer.site h4{color:#fff;font-size:15px;margin-bottom:13px}
footer.site a{color:#a9bee8;font-size:13.5px;display:block;margin-bottom:7px}
footer.site a:hover{color:#f0d070}
footer.site .brand{font-size:20px;font-weight:800;color:#fff;margin-bottom:10px}
footer.site .brand span{color:#f0d070}
footer.site p{font-size:13px;line-height:1.8}
.f-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;font-size:12.5px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* ── 列表/表格(通用) ── */
.list-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 22px;margin-bottom:14px;box-shadow:var(--shadow);display:flex;justify-content:space-between;gap:16px;align-items:flex-start;flex-wrap:wrap}
.list-card h3{font-size:16.5px;margin-bottom:5px}
.list-card .sub{font-size:13px;color:var(--ink2)}
.tagchip{display:inline-block;background:var(--blue-soft);color:var(--blue-deep);border-radius:6px;padding:1px 9px;font-size:12px;font-weight:600;margin-right:5px}
.tagchip.gold{background:var(--gold-soft);color:#8a6d10}
.pager{display:flex;gap:8px;justify-content:center;margin:28px 0}
.pager a,.pager span{border:1px solid var(--line);border-radius:8px;padding:5px 13px;font-size:13.5px}
.pager span.cur{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ── 404 ── */
.nf{text-align:center;padding:90px 0}
.nf .code{font-size:74px;font-weight:800;color:var(--blue-soft);line-height:1}
.nf h1{font-size:24px;color:var(--blue-deep);margin:12px 0 8px}
.nf p{color:var(--ink2);margin-bottom:22px}

/* ── 工具类 ── */
.mt10{margin-top:10px}.mt20{margin-top:20px}.mt30{margin-top:30px}.mb20{margin-bottom:20px}
.tc{text-align:center}
.muted{color:var(--ink2);font-size:13.5px}
.gold-line{width:56px;height:3px;border-radius:2px;background:linear-gradient(90deg,var(--gold),#e8cf7a);margin:10px auto 0}

/* ── 响应式 ── */
@media(max-width:900px){
  .grid.c4{grid-template-columns:repeat(2,1fr)}
  .grid.c3{grid-template-columns:repeat(2,1fr)}
  .f-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:28px}
}
@media(max-width:640px){
  .grid.c4,.grid.c3,.grid.c2{grid-template-columns:1fr}
  header.nav .container{height:82px}
  nav.menu{display:none;position:absolute;top:82px;left:0;right:0;background:#fff;flex-direction:column;padding:12px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg)}
  nav.menu.open{display:flex}
  .burger{display:block;margin-left:auto}
  .logo-full img{width:158px;height:auto;max-height:66px;border-radius:8px;object-fit:contain}
  .nav-cta{gap:6px}
  .nav-cta .btn-line{display:none}
  .hero{padding:44px 0 50px}
  .hero h1{font-size:24px}
  .form-card{padding:22px}
  .cta-band{padding:26px}
}