/*
Theme Name: 光伏老斌商务主题
Theme URI: https://pv.ymlb.cn/
Author: 光伏老斌
Author URI: https://pv.ymlb.cn/
Description: 面向离网光伏与分布式光伏客户的商务风格主题。深松绿与阳光金配色，首页包含品牌介绍、服务能力、真实案例、常见问题与行动引导等区块，适配电脑、平板与手机，所有内容均可通过后台文章、菜单与自定义链接维护。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 7.1
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: pv-laobin
Tags: business, green-energy, one-column, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ============================================================
   基础变量与重置
   ============================================================ */
:root {
  --green-900: #14382c;
  --green-800: #17453a;
  --green-700: #1e5c4d;
  --green-600: #2e7d6b;
  --green-100: #e4efe9;
  --gold-600: #d9922e;
  --gold-500: #e8a33d;
  --gold-400: #f2b85c;
  --ink: #20302a;
  --ink-soft: #55665f;
  --line: #e3e9e5;
  --bg: #f6f8f5;
  --card: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(20, 56, 44, 0.08);
  --font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--green-700); text-decoration: none; }
a:hover { color: var(--gold-600); }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 0.6em; color: var(--green-900); }
p { margin: 0 0 1em; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 22px; }
.section { padding: 74px 0; }
.section-alt { background: var(--card); }
.sec-head { max-width: 720px; margin: 0 auto 46px; text-align: center; }
.sec-head .eyebrow {
  display: inline-block; font-size: 14px; color: var(--green-600);
  letter-spacing: 2px; margin-bottom: 8px; font-weight: 600;
}
.sec-head h2 { font-size: clamp(26px, 3.4vw, 36px); margin-bottom: 12px; }
.sec-head p { color: var(--ink-soft); font-size: 16px; }

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.site-brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--green-900); }
.site-brand .logo-dot {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--green-700), var(--green-600));
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px;
}
.main-nav ul { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; align-items: center; }
.main-nav a { color: var(--ink); font-weight: 500; font-size: 15px; }
.main-nav a:hover { color: var(--green-600); }
.main-nav .current-menu-item > a, .main-nav .current_page_item > a { color: var(--green-700); font-weight: 700; }
.nav-cta a {
  display: inline-block; background: var(--green-700); color: #fff; border-radius: 999px;
  padding: 9px 22px; font-size: 14px; font-weight: 600;
}
.nav-cta a:hover { background: var(--green-600); color: #fff; }
.nav-toggle { display: none; background: none; border: 0; font-size: 24px; color: var(--green-900); cursor: pointer; padding: 6px; }

/* ============================================================
   首页 Hero
   ============================================================ */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background:
    linear-gradient(105deg, rgba(13, 42, 32, 0.92) 0%, rgba(20, 56, 44, 0.78) 42%, rgba(20, 56, 44, 0.35) 100%),
    url("assets/hero-pv.jpg") center/cover no-repeat;
  padding: 108px 0 116px;
}
.hero-inner { max-width: 720px; }
.hero .eyebrow {
  display: inline-block; font-size: 14px; letter-spacing: 2px; color: var(--gold-400);
  background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 6px 16px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { color: #fff; font-size: clamp(32px, 5vw, 52px); margin-bottom: 18px; }
.hero p.lead { color: rgba(255, 255, 255, 0.92); font-size: 18px; max-width: 620px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.btn {
  display: inline-block; border-radius: 999px; padding: 13px 30px; font-weight: 600;
  font-size: 15px; transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--gold-500); color: var(--green-900); }
.btn-primary:hover { background: var(--gold-400); color: var(--green-900); box-shadow: 0 8px 20px rgba(232, 163, 61, 0.35); }
.btn-ghost { background: rgba(255, 255, 255, 0.1); color: #fff; border: 1px solid rgba(255, 255, 255, 0.5); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.2); color: #fff; }
.hero-stats { display: flex; gap: 44px; margin-top: 54px; flex-wrap: wrap; }
.hero-stats .num { font-size: 30px; font-weight: 700; color: var(--gold-400); }
.hero-stats .lbl { font-size: 14px; color: rgba(255, 255, 255, 0.85); }

/* ============================================================
   信任带
   ============================================================ */
.trust-band { background: var(--green-900); color: #fff; }
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.trust-item { padding: 30px 34px; border-right: 1px solid rgba(255, 255, 255, 0.12); }
.trust-item:last-child { border-right: 0; }
.trust-item h3 { color: var(--gold-400); font-size: 17px; margin-bottom: 8px; }
.trust-item p { color: rgba(255, 255, 255, 0.85); font-size: 14.5px; margin: 0; }

/* ============================================================
   服务区块
   ============================================================ */
.svc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.svc-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; box-shadow: var(--shadow);
}
.svc-icon {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 16px;
  background: var(--green-100); color: var(--green-700);
  display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.svc-card h3 { font-size: 17px; margin-bottom: 8px; }
.svc-card p { color: var(--ink-soft); font-size: 14px; margin: 0; }

/* ============================================================
   最新文章 / 案例
   ============================================================ */
.posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.post-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column; transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.post-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.post-card .thumb { aspect-ratio: 4 / 3; overflow: hidden; background: var(--green-100); }
.post-card .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.post-card .body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.post-card .meta { font-size: 13px; color: var(--ink-soft); margin-bottom: 8px; }
.post-card h3 { font-size: 17px; margin-bottom: 8px; }
.post-card h3 a { color: var(--green-900); }
.post-card h3 a:hover { color: var(--green-600); }
.post-card .excerpt { color: var(--ink-soft); font-size: 14px; margin: 0 0 14px; flex: 1; }
.post-card .more { font-size: 14px; font-weight: 600; color: var(--green-700); }
.more-link { display: inline-block; margin-top: 40px; text-align: center; }

/* ============================================================
   电站实景双图
   ============================================================ */
.scene-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.scene-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.scene-imgs figure { margin: 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.scene-imgs figure:first-child { grid-column: 1 / -1; }
.scene-imgs img { width: 100%; display: block; }
.scene-copy h2 { font-size: clamp(24px, 3vw, 32px); margin-bottom: 16px; }
.scene-copy p { color: var(--ink-soft); }
.scene-copy ul { padding-left: 20px; color: var(--ink-soft); }
.scene-copy li { margin-bottom: 8px; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 14px; }
details.faq-item {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
}
details.faq-item summary {
  cursor: pointer; padding: 18px 22px; font-weight: 600; color: var(--green-900);
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { content: "+"; font-size: 22px; color: var(--green-600); transition: transform 0.2s ease; }
details.faq-item[open] summary::after { transform: rotate(45deg); }
details.faq-item .faq-a { padding: 0 22px 18px; color: var(--ink-soft); font-size: 15px; }

/* ============================================================
   CTA
   ============================================================ */
.cta-band { background: linear-gradient(120deg, var(--green-800), var(--green-700)); color: #fff; text-align: center; }
.cta-band h2 { color: #fff; font-size: clamp(24px, 3.2vw, 34px); margin-bottom: 12px; }
.cta-band p { color: rgba(255, 255, 255, 0.88); max-width: 640px; margin: 0 auto 30px; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { background: var(--green-900); color: rgba(255, 255, 255, 0.78); padding: 46px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 36px; margin-bottom: 34px; }
.site-footer h4 { color: #fff; font-size: 16px; margin-bottom: 14px; }
.site-footer a { color: rgba(255, 255, 255, 0.78); }
.site-footer a:hover { color: var(--gold-400); }
.footer-brand p { font-size: 14px; }
.footer-links ul { list-style: none; margin: 0; padding: 0; }
.footer-links li { margin-bottom: 9px; font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.14); padding-top: 20px; font-size: 13px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ============================================================
   文章列表页（index / archive）
   ============================================================ */
.page-head { padding: 56px 0 34px; background: var(--green-100); }
.page-head h1 { font-size: clamp(26px, 3.4vw, 36px); margin-bottom: 6px; }
.page-head p { color: var(--ink-soft); margin: 0; }
.archive-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; padding: 56px 0 70px; }
.pagination { display: flex; justify-content: center; gap: 10px; padding-bottom: 70px; }
.pagination .page-numbers { padding: 8px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; color: var(--ink); }
.pagination .current { background: var(--green-700); color: #fff; border-color: var(--green-700); }

/* ============================================================
   文章详情页
   ============================================================ */
.single-wrap { padding: 52px 0 80px; }
.single-head { max-width: 820px; margin: 0 auto 30px; }
.single-head h1 { font-size: clamp(26px, 3.6vw, 38px); margin-bottom: 14px; }
.single-meta { color: var(--ink-soft); font-size: 14px; display: flex; gap: 18px; flex-wrap: wrap; }
.single-body {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 40px 44px; max-width: 860px; margin: 0 auto; box-shadow: var(--shadow);
}
.single-body h2 { font-size: 24px; margin-top: 1.6em; padding-top: 0.4em; }
.single-body h3 { font-size: 20px; margin-top: 1.4em; }
.single-body img { border-radius: 10px; }
.single-body figure { margin: 1.6em 0; }
.single-body figure img { display: block; }
.single-body figcaption, .single-body .wp-element-caption { font-size: 13px; color: var(--ink-soft); text-align: center; margin-top: 10px; }
.single-body ul, .single-body ol { padding-left: 24px; }
.single-body li { margin-bottom: 6px; }
.single-body blockquote { border-left: 4px solid var(--gold-500); margin: 1.4em 0; padding: 4px 0 4px 18px; color: var(--ink-soft); }
.single-foot { max-width: 860px; margin: 26px auto 0; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 14px; }
.single-foot a { color: var(--ink-soft); }
.single-foot a:hover { color: var(--green-700); }
.tag-list { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 20px; }
.tag-list a { font-size: 13px; background: var(--green-100); color: var(--green-700); padding: 4px 14px; border-radius: 999px; }

/* ============================================================
   页面 / 404
   ============================================================ */
.page-wrap { padding: 52px 0 80px; }
.page-body { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 44px; max-width: 860px; margin: 0 auto; box-shadow: var(--shadow); }
.err-wrap { text-align: center; padding: 90px 0; }
.err-wrap h1 { font-size: 56px; color: var(--green-600); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
  .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .posts-grid, .archive-grid { grid-template-columns: repeat(2, 1fr); }
  .scene-wrap { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-item { border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
  .trust-item:last-child { border-bottom: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: block; }
  .main-nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 14px 22px 20px;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: 14px; }
  .single-body, .page-body { padding: 28px 22px; }
}
@media (max-width: 560px) {
  .svc-grid, .posts-grid, .archive-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 84px 0 92px; }
  .hero-stats { gap: 26px; }
}