/*
Theme Name: 波浪广告 Bolang
Theme URI: https://bolang-ad.com/
Author: 江西波浪广告装饰有限公司
Description: 波浪广告官方主题，由原静态站改造而成，页面外观与原站保持一致。支持在后台「外观 - 自定义」中修改首页文案、联系我们信息，在「案例」「服务项目」菜单中增删改内容。
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: bolang
Tags: custom-logo, custom-menu, featured-images, translation-ready
*/

/* ===== 波浪广告装饰 · 企业官网样式 ===== */
:root{
  --c-navy:#0a2a5e;        /* 深蓝 */
  --c-blue:#1e6fd9;        /* 品牌蓝 */
  --c-cyan:#18b6c9;        /* 青 */
  --c-ink:#1a2233;         /* 正文 */
  --c-gray:#5b6678;        /* 次要 */
  --c-line:#e4e9f2;        /* 分隔线 */
  --c-bg:#ffffff;
  --c-bg-soft:#f4f7fc;
  --radius:14px;
  --shadow:0 8px 28px rgba(10,42,94,.10);
  --maxw:1180px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans CN",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--c-ink);background:var(--c-bg);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section.soft{background:var(--c-bg-soft)}
.section h2{font-size:30px;font-weight:800;color:var(--c-navy);text-align:center;letter-spacing:.5px}
.section .sub{text-align:center;color:var(--c-gray);margin:10px 0 44px;font-size:16px}
.grad-text{background:linear-gradient(90deg,var(--c-blue),var(--c-cyan));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--c-line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--c-navy);font-size:18px}
.brand img{height:38px;width:auto}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--c-gray);letter-spacing:1px}
.nav-menu{display:flex;gap:28px;list-style:none;align-items:center}
.nav-menu a{font-size:15px;color:var(--c-ink);font-weight:600;position:relative;padding:4px 0}
.nav-menu a:hover,.nav-menu a.active{color:var(--c-blue)}
.nav-menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--c-blue),var(--c-cyan))}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:700;font-size:15px;transition:.2s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(90deg,var(--c-blue),var(--c-cyan));color:#fff;box-shadow:0 6px 18px rgba(30,111,217,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(30,111,217,.45)}
.btn-ghost{background:transparent;color:var(--c-blue);border:2px solid var(--c-blue)}
.btn-ghost:hover{background:var(--c-blue);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:3px;background:var(--c-navy);border-radius:3px;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;background:linear-gradient(135deg,#0a2a5e 0%,#134a9e 55%,#1e6fd9 100%);color:#fff;overflow:hidden;padding:90px 0 120px}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 10%,rgba(24,182,201,.35),transparent 45%)}
.hero .container{position:relative;z-index:2}
.hero h1{font-size:46px;font-weight:900;line-height:1.2;margin-bottom:18px}
.hero p.lead{font-size:19px;max-width:640px;color:#dbe7ff;margin-bottom:32px}
.hero .actions{display:flex;gap:16px;flex-wrap:wrap}
.hero .stats{display:flex;gap:38px;margin-top:48px;flex-wrap:wrap}
.hero .stats div{text-align:left}
.hero .stats b{display:block;font-size:30px;font-weight:900;color:#fff}
.hero .stats span{font-size:13px;color:#b9cdf3;letter-spacing:.5px}
.wave-bottom{position:absolute;left:0;right:0;bottom:-1px;line-height:0;z-index:1}
.wave-bottom svg{width:100%;height:70px}

/* ===== 卡片网格 ===== */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:28px;transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.card .ic{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--c-blue),var(--c-cyan));display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;font-weight:800;margin-bottom:16px}
.card h3{font-size:19px;color:var(--c-navy);margin-bottom:10px}
.card p{color:var(--c-gray);font-size:15px}

/* ===== 关于 ===== */
.about-split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.about-split img{border-radius:var(--radius);box-shadow:var(--shadow)}
.about-text h2{text-align:left;font-size:28px}
.about-text p{color:var(--c-gray);margin:14px 0}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.tag{background:var(--c-bg-soft);border:1px solid var(--c-line);color:var(--c-blue);padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600}

/* 经营范围两栏 */
.scope{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:8px}
.scope .box{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:24px}
.scope h4{color:var(--c-blue);margin-bottom:12px;font-size:17px}
.scope ul{list-style:none}
.scope li{padding:7px 0 7px 22px;position:relative;color:var(--c-gray);font-size:14.5px;border-bottom:1px dashed var(--c-line)}
.scope li:last-child{border-bottom:none}
.scope li::before{content:"▸";position:absolute;left:0;color:var(--c-cyan)}

/* ===== 案例 ===== */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case-item{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:0 4px 16px rgba(10,42,94,.08);aspect-ratio:4/3}
.case-item img{width:100%;height:100%;object-fit:cover;transition:.4s}
.case-item:hover img{transform:scale(1.06)}
.case-item .cap{position:absolute;left:0;right:0;bottom:0;padding:16px;background:linear-gradient(0deg,rgba(10,42,94,.85),transparent);color:#fff;font-weight:700;font-size:15px;opacity:0;transform:translateY(8px);transition:.3s}
.case-item:hover .cap{opacity:1;transform:translateY(0)}

/* ===== 联系 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.info-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:30px}
.info-row{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--c-line)}
.info-row:last-child{border-bottom:none}
.info-row .k{color:var(--c-blue);font-weight:700;min-width:78px}
.info-row .v{color:var(--c-ink)}
.contact-form{background:var(--c-bg-soft);border-radius:var(--radius);padding:30px}
.contact-form label{display:block;font-size:14px;font-weight:600;margin:14px 0 6px;color:var(--c-navy)}
.contact-form input,.contact-form textarea{width:100%;padding:12px 14px;border:1px solid var(--c-line);border-radius:10px;font-family:inherit;font-size:15px;background:#fff}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--c-blue);box-shadow:0 0 0 3px rgba(30,111,217,.15)}
.contact-form textarea{resize:vertical;min-height:110px}
.note{font-size:13px;color:var(--c-gray);margin-top:10px}

/* ===== CTA条 ===== */
.cta{background:linear-gradient(90deg,var(--c-navy),var(--c-blue));color:#fff;border-radius:18px;padding:46px;text-align:center;margin:0 0 72px}
.cta h2{color:#fff;font-size:28px}
.cta p{color:#cfe0ff;margin:10px 0 24px}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-navy);color:#c9d6ef;padding:48px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.site-footer a{color:#c9d6ef}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none}
.site-footer li{padding:5px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:32px;padding-top:18px;text-align:center;color:#8fa3c8;font-size:13px}
.footer-bottom a{color:#8fa3c8}

/* ===== 响应式 ===== */
@media(max-width:960px){
  .grid-3,.grid-4,.cases-grid{grid-template-columns:repeat(2,1fr)}
  .about-split,.contact-grid,.scope{grid-template-columns:1fr}
  .hero h1{font-size:36px}
}
@media(max-width:680px){
  .nav-menu{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:0 20px;max-height:0;overflow:hidden;transition:.3s;border-bottom:1px solid var(--c-line)}
  .nav-menu.open{max-height:360px;padding:10px 20px 18px}
  .nav-menu li{padding:10px 0;border-bottom:1px solid var(--c-line)}
  .nav-toggle{display:flex}
  .grid-2,.grid-3,.grid-4,.cases-grid{grid-template-columns:1fr}
  .hero h1{font-size:30px}
  .hero .stats{gap:22px}
  .section{padding:52px 0}
  .cta{padding:32px 22px}
}

/* ===== 案例展示与图片灯箱（取自原站 cases.html） ===== */
.case-groups .case-group{margin-bottom:36px}
.group-title{font-size:18px;color:#1f6feb;border-left:4px solid #1f6feb;padding-left:10px;margin:0 0 14px}
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.85);display:none;align-items:center;justify-content:center;z-index:9999;cursor:zoom-out}
.lightbox.show{display:flex}
.lightbox img{max-width:92vw;max-height:92vh;border-radius:8px;box-shadow:0 8px 40px rgba(0,0,0,.5)}
.case-item img{cursor:zoom-in}