/*
Theme Name: dzsktech
Theme URI: https://www.dzsktech.net
Author: 青岛大正思科科技有限公司
Description: 大正思科官网定制主题：外贸独立站制作与GEO生成式引擎优化业务展示
Version: 1.0.0
Requires at least: 6.0
Tested up to: 7.1
Requires PHP: 8.0
Text Domain: dzsktech
*/

/* ========== 基础 ========== */
:root{
  --primary:#0d3f88;
  --primary-dark:#092d63;
  --primary-light:#1450a0;
  --accent:#f0882d;
  --accent-dark:#d9731a;
  --bg:#ffffff;
  --bg-alt:#f4f7fb;
  --text:#22303f;
  --muted:#64748b;
  --border:#e5eaf1;
  --radius:10px;
  --shadow:0 4px 20px rgba(13,63,136,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--accent)}
.container{max-width:1160px;margin:0 auto;padding:0 20px}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .5em;color:var(--primary-dark)}

/* ========== 顶部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 8px rgba(13,63,136,.05);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:22px;font-weight:700;color:var(--primary)}
.brand-sub{font-size:11px;letter-spacing:3px;color:var(--muted)}
.main-nav .nav-list{display:flex;gap:28px;list-style:none;margin:0;padding:0}
.main-nav .nav-list a{color:var(--text);font-size:15px;font-weight:500;padding:8px 0;position:relative}
.main-nav .nav-list a:hover,.main-nav .nav-list .current-menu-item>a{color:var(--primary)}
.main-nav .nav-list a::after{
  content:"";position:absolute;left:0;bottom:2px;width:0;height:2px;background:var(--accent);transition:width .25s;
}
.main-nav .nav-list a:hover::after,.main-nav .nav-list .current-menu-item>a::after{width:100%}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--primary);margin:5px 0;transition:.25s}

/* ========== 首页 Hero ========== */
.hero{
  background:
    linear-gradient(90deg, rgba(7,32,66,.92) 0%, rgba(13,63,136,.66) 46%, rgba(18,86,163,.28) 100%),
    url("assets/banner.png") center/cover no-repeat;
  color:#fff;padding:88px 0 96px;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(255,255,255,.14),transparent 65%);
}
.hero::after{
  content:"";position:absolute;left:-80px;bottom:-160px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(240,136,45,.22),transparent 65%);
}
.hero-inner{position:relative;z-index:1;max-width:820px}
.hero h1{color:#fff;font-size:40px;margin-bottom:18px}
.hero p{font-size:18px;color:rgba(255,255,255,.88);margin:0 0 30px}
.hero-badge{
  display:inline-block;background:rgba(240,136,45,.18);border:1px solid rgba(240,136,45,.5);
  color:#ffd9b0;font-size:13px;padding:4px 14px;border-radius:999px;margin-bottom:20px;
}
.btn{
  display:inline-block;padding:12px 30px;border-radius:var(--radius);font-size:15px;font-weight:600;
  transition:.2s;cursor:pointer;border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-solid{background:var(--primary);color:#fff}
.btn-solid:hover{background:var(--primary-light);color:#fff}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}

/* ========== 通用区块 ========== */
.section{padding:72px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:720px;margin:0 auto 44px}
.section-head .kicker{color:var(--accent);font-size:14px;font-weight:600;letter-spacing:2px}
.section-head h2{font-size:30px}
.section-head p{color:var(--muted);margin:0}

/* 服务卡片 */
.services-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.service-card{
  background:#fff;border:1px solid var(--border);border-radius:14px;padding:36px 32px;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;
}
.service-card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(13,63,136,.14)}
.service-icon{
  width:56px;height:56px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));margin-bottom:18px;
}
.service-icon svg{width:28px;height:28px;fill:#fff}
.service-card h3{font-size:20px}
.service-card p{color:var(--muted);margin:0 0 16px}
.service-card .more{font-weight:600;font-size:14px}

/* 特色点 */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px 22px;text-align:center}
.feature .num{font-size:28px;font-weight:800;color:var(--accent);line-height:1}
.feature h3{font-size:16px;margin:12px 0 6px}
.feature p{font-size:14px;color:var(--muted);margin:0}

/* 流程 */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 20px}
.step .step-no{font-size:13px;color:var(--accent);font-weight:700;letter-spacing:1px}
.step h3{font-size:17px;margin:8px 0 6px}
.step p{font-size:14px;color:var(--muted);margin:0}

/* CTA 条 */
.cta-band{
  background:linear-gradient(120deg,var(--primary) 0%,var(--primary-light) 100%);
  color:#fff;padding:56px 0;text-align:center;
}
.cta-band h2{color:#fff;font-size:28px}
.cta-band p{color:rgba(255,255,255,.85);margin:0 0 24px}

/* ========== 页脚 ========== */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.82);margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 40px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:14px}
.site-footer p{font-size:14px;margin:0 0 8px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer ul li{margin-bottom:8px}
.site-footer ul a{color:rgba(255,255,255,.82);font-size:14px}
.site-footer ul a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;font-size:13px}
.footer-bottom .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.footer-bottom a{color:rgba(255,255,255,.75)}
.footer-bottom a:hover{color:#fff}
.beian-badge{height:16px;width:auto;vertical-align:-3px;margin-right:6px}

/* ========== 内页 ========== */
.page-hero{
  background:linear-gradient(135deg,var(--primary-dark),var(--primary));
  color:#fff;padding:56px 0;
}
.page-hero h1{color:#fff;font-size:32px;margin:0}
.page-body{padding:56px 0 72px}
.page-body .container{max-width:860px}
.page-body h2{font-size:24px;margin-top:1.6em;border-left:4px solid var(--accent);padding-left:12px}
.page-body h3{font-size:19px;margin-top:1.4em}
.page-body p,.page-body li{color:#3a4a5c}
.page-body ul,.page-body ol{padding-left:22px}

/* 联系表单 */
.contact-form{background:var(--bg-alt);border:1px solid var(--border);border-radius:14px;padding:28px;margin-top:20px}
.contact-form label{display:block;font-weight:600;margin:14px 0 6px;color:var(--primary-dark)}
.contact-form input,.contact-form textarea{
  width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:8px;font-size:15px;
  font-family:inherit;background:#fff;color:var(--text);
}
.contact-form input:focus,.contact-form textarea:focus{outline:2px solid var(--primary-light);border-color:transparent}
.contact-form textarea{min-height:130px;resize:vertical}
.contact-form button{margin-top:18px}
.form-ok{background:#e9f7ee;border:1px solid #b7e3c8;color:#1d7a44;padding:12px 16px;border-radius:8px;margin:16px 0}
.form-err{background:#fdecec;border:1px solid #f3bdbd;color:#b33535;padding:12px 16px;border-radius:8px;margin:16px 0}
.form-err ul{margin:6px 0 0;padding-left:20px}

/* 新闻列表 */
.post-list{list-style:none;margin:0;padding:0}
.post-list li{border-bottom:1px solid var(--border);padding:22px 0}
.post-list h2{font-size:22px;margin:0 0 6px}
.post-list .post-date{color:var(--muted);font-size:13px}
.post-list p{color:var(--muted);margin:8px 0 0}
.post-meta{color:var(--muted);font-size:14px;margin-bottom:20px}

/* 案例占位 */
.case-note{
  background:var(--bg-alt);border:1px dashed var(--border);border-radius:12px;padding:28px;color:var(--muted);text-align:center;
}

/* ========== 响应式 ========== */
@media(max-width:960px){
  .features-grid,.steps-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .hero{padding:56px 0 64px}
  .hero h1{font-size:30px}
  .services-grid{grid-template-columns:1fr}
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);
    max-height:0;overflow:hidden;transition:max-height .3s;
  }
  .main-nav.open{max-height:420px}
  .main-nav .nav-list{flex-direction:column;gap:0;padding:8px 20px 16px}
  .main-nav .nav-list a{display:block;padding:12px 0;border-bottom:1px solid var(--border)}
  .footer-bottom .container{justify-content:center;text-align:center}
}