/*
Theme Name: Dele Pro
Theme URI: https://www.delezixun.com
Author: Dele Consulting
Description: 广东德乐企业管理咨询官网主题 —— 商务风设计，含首页、关于我们、五大系统、学术贡献、咨询案例、新闻动态、联系我们、在线留言、加入我们全套模板与留言后台管理。
Version: 1.0.0
Text Domain: dele-pro
*/

:root {
  --navy: #1F2A44;
  --navy-2: #34426B;
  --gold: #B89B5E;
  --gold-light: #D6C295;
  --beige: #E9E2D0;
  --bg: #F5F6F8;
  --ink: #22262E;
  --muted: #6B7280;
  --white: #FFFFFF;
  --shadow: 0 10px 30px rgba(31, 42, 68, .10);
  --radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============ 顶部信息条 ============ */
.topbar { background: var(--navy); color: rgba(255,255,255,.75); font-size: 13px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 38px; }
.topbar a { color: var(--gold-light); }
.topbar .tb-left span { margin-right: 18px; }

/* ============ 主导航 ============ */
.site-header { background: var(--white); border-bottom: 1px solid #ECEEF2; position: sticky; top: 0; z-index: 999; box-shadow: 0 2px 12px rgba(31,42,68,.06); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 84px; }
.brand img { height: 56px; width: auto; }
.main-nav ul { display: flex; gap: 8px; }
.main-nav > ul > li { position: relative; }
.main-nav a { display: block; padding: 10px 16px; font-size: 16px; font-weight: 600; color: var(--ink); border-radius: 8px; transition: all .2s; position: relative; }
.main-nav > ul > li > a::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: 3px; height: 3px; border-radius: 2px; background: var(--gold); transform: scaleX(0); transform-origin: center; transition: transform .25s; }
.main-nav a:hover, .main-nav .current-menu-item > a, .main-nav .current_page_item > a { color: var(--navy-2); background: #F0F2F7; }
.main-nav > ul > li > a:hover::after, .main-nav > ul > li.current-menu-item > a::after, .main-nav > ul > li.current_page_item > a::after, .main-nav > ul > li.menu-item-has-children:hover > a::after { transform: scaleX(1); }
.main-nav .menu-item-has-children { position: relative; }
.main-nav .sub-menu { display: none; position: absolute; top: 100%; left: 0; background: var(--white); min-width: 230px; box-shadow: 0 16px 40px rgba(31,42,68,.18); border-radius: 12px; overflow: hidden; padding: 0 0 6px; z-index: 1001; }
.main-nav .menu-item-has-children:hover .sub-menu { display: block; }
.main-nav .sub-head-li { list-style: none; }
.main-nav .sub-head { background: linear-gradient(135deg, var(--navy), var(--navy-2)); color: var(--white); padding: 18px 18px 16px; text-align: center; margin-bottom: 6px; }
.main-nav .sub-head::after { content: ""; display: block; width: 32px; height: 2px; background: var(--gold); margin: 10px auto 0; }
.main-nav .sub-title { display: block; font-size: 18px; font-weight: 700; letter-spacing: 2px; }
.main-nav .sub-cap { display: block; font-size: 12px; color: var(--gold-light); letter-spacing: 3px; margin-top: 3px; }
/* v39: 一级导航中英上下两行 */
.main-nav > ul > li > a { display: flex; flex-direction: column; align-items: center; justify-content: center; }
.main-nav .nav-cn { font-size: 16px; font-weight: 600; line-height: 1.3; }
.main-nav .nav-en { font-size: 10px; font-weight: 500; letter-spacing: .8px; color: var(--muted); line-height: 1.4; margin-top: 1px; transition: color .2s; }
.main-nav > ul > li > a:hover .nav-en,
.main-nav > ul > li.current-menu-item > a .nav-en,
.main-nav > ul > li.current_page_item > a .nav-en { color: var(--gold); }
.main-nav .sub-menu li { list-style: none; }
.main-nav .sub-menu li a { display: block; padding: 11px 20px; text-align: center; font-weight: 500; font-size: 15px; color: var(--ink); border-bottom: 1px dashed #EEF0F4; transition: all .2s; }
.main-nav .sub-menu > li:last-child { border-bottom: none; }
.main-nav .sub-menu li:last-child a { border-bottom: none; }
.main-nav .sub-menu li a:hover, .main-nav .sub-menu .current-menu-item > a { color: var(--navy); background: var(--beige); font-weight: 700; }
.nav-toggle { display: none; background: none; border: none; font-size: 26px; color: var(--navy); cursor: pointer; }
.header-qr { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; margin-left: 16px; position: relative; cursor: pointer; }
.header-qr img { width: 46px; height: 46px; border-radius: 6px; border: 1px solid rgba(184,155,94,.35); padding: 2px; background: var(--white); }
.header-qr span { font-size: 11px; color: var(--muted); white-space: nowrap; }
.header-qr .qr-pop { display: none; position: absolute; top: 100%; right: 0; margin-top: 14px; background: var(--white); border: 1px solid #ECEEF2; border-radius: 12px; box-shadow: 0 12px 32px rgba(31,42,68,.18); padding: 16px; z-index: 1000; min-width: 300px; align-items: center; gap: 16px; }
.header-qr .qr-pop::before { content: ""; position: absolute; top: -6px; right: 22px; width: 12px; height: 12px; background: var(--white); border-left: 1px solid #ECEEF2; border-top: 1px solid #ECEEF2; transform: rotate(45deg); }
.header-qr .qr-pop img { width: 100px; height: 100px; border: none; padding: 0; border-radius: 8px; flex: none; }
.header-qr .qr-pop p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.7; text-align: left; white-space: nowrap; }
.header-qr .qr-pop p b { display: block; color: var(--navy); font-size: 15px; margin-bottom: 4px; }
.header-qr:hover .qr-pop { display: flex; }

/* ============ 首页横幅 ============ */
.hero { background-color: var(--navy); background-image: linear-gradient(100deg, rgba(31,42,68,.95) 0%, rgba(31,42,68,.85) 42%, rgba(31,42,68,.38) 100%), url("assets/clients-wall.jpg"); background-size: cover; background-position: center; background-repeat: no-repeat; color: var(--white); position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; right: -120px; top: -120px; width: 420px; height: 420px; border-radius: 50%; border: 60px solid rgba(184,155,94,.16); }
.hero::after { content: ""; position: absolute; left: -80px; bottom: -160px; width: 340px; height: 340px; border-radius: 50%; background: rgba(233,226,208,.07); }
.hero .container { position: relative; z-index: 2; padding-top: 96px; padding-bottom: 110px; }
.hero-tag { display: inline-block; border: 1px solid rgba(214,194,149,.6); color: var(--gold-light); padding: 5px 16px; border-radius: 999px; font-size: 14px; letter-spacing: 2px; margin-bottom: 22px; }
.hero h1 { font-size: 42px; line-height: 1.35; font-weight: 700; max-width: 760px; }
.hero h1 em { font-style: normal; color: var(--gold-light); }
.hero p.lead { margin-top: 20px; font-size: 18px; color: rgba(255,255,255,.82); max-width: 640px; }
.hero-actions { margin-top: 36px; display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 13px 34px; border-radius: 999px; font-weight: 600; font-size: 16px; transition: all .25s; }
.btn-gold { background: var(--gold); color: var(--white); }
.btn-gold:hover { background: #A8894E; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(184,155,94,.4); }
.btn-ghost { border: 1px solid rgba(255,255,255,.55); color: var(--white); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.hero-stats { margin-top: 56px; display: flex; gap: 56px; flex-wrap: wrap; }
.hero-stat .num { font-size: 34px; font-weight: 700; color: var(--gold-light); }
.hero-stat .num small { font-size: 16px; margin-left: 2px; }
.hero-stat .lab { font-size: 14px; color: rgba(255,255,255,.7); }

/* ============ 通用 Section ============ */
.section { padding: 88px 0; }
.section.alt { background: var(--bg); }
.sec-head { text-align: center; margin-bottom: 52px; }
.sec-head .cap { color: var(--gold); font-size: 14px; letter-spacing: 4px; text-transform: uppercase; font-weight: 600; }
.sec-head h2 { font-size: 32px; color: var(--navy); margin-top: 8px; font-weight: 700; }
.sec-head .line { width: 56px; height: 3px; background: var(--gold); margin: 16px auto 0; border-radius: 2px; }
.sec-head p.sub { color: var(--muted); margin-top: 14px; }

/* ============ 五大系统卡片 ============ */
.sys-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.sys-card { background: var(--white); border-radius: var(--radius); padding: 34px 22px; text-align: center; box-shadow: 0 4px 16px rgba(31,42,68,.06); transition: all .3s; border: 1px solid transparent; }
a.sys-card { display: block; text-decoration: none; color: inherit; cursor: pointer; }
.sys-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: var(--gold); }
.sys-card .ico { min-width: 64px; height: 64px; padding: 0 12px; margin: 0 auto 18px; border-radius: 999px; background: linear-gradient(135deg, var(--navy), var(--navy-2)); color: var(--gold-light); display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 700; letter-spacing: 1px; white-space: nowrap; transition: all .3s; }
.sys-card:hover .ico { background: linear-gradient(135deg, var(--gold), #A8894E); color: var(--white); transform: scale(1.08); }
.sys-card h3 { font-size: 18px; color: var(--navy); margin-bottom: 10px; }
.sys-card p { font-size: 14px; color: var(--muted); }
.sys-card .more { display: inline-block; margin-top: 14px; color: var(--gold); font-size: 14px; font-weight: 600; transition: all .2s; }
.sys-card .more:hover { color: var(--navy-2); letter-spacing: 1px; }
.sys-arch { margin-top: 44px; background: var(--white); border-radius: var(--radius); padding: 30px 34px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; box-shadow: 0 4px 16px rgba(31,42,68,.06); }
.arch-item { text-align: center; padding: 12px 6px; border-right: 1px dashed #D9DDE5; }

/* ============ 体系总览数字条 ============ */
.sys-overview { background: var(--navy); padding: 12px 0; }
.ov-grid { display: flex; flex-wrap: wrap; gap: 1px; background: var(--navy-2); border-radius: var(--radius); overflow: hidden; }
.ov-item { flex: 1 1 220px; background: var(--navy); padding: 10px 10px; text-align: center; }
.ov-n { font-size: 24px; font-weight: 700; color: var(--gold-light); line-height: 1.15; letter-spacing: 1px; }
.ov-t { font-size: 13px; color: rgba(255,255,255,.82); margin-top: 2px; letter-spacing: 1px; }

/* ============ 产品体系集成卡 ============ */
.sys-card-v2 { padding: 32px 18px 26px; }
.sys-badge { width: 44px; height: 44px; border-radius: 50%; background: var(--navy); color: var(--gold-light); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 700; margin: 0 auto 14px; transition: all .3s; }
.sys-card-v2:hover .sys-badge { background: var(--gold); color: var(--white); transform: scale(1.08); }
.sys-card-v2 h3 { font-size: 17px; }
.sys-idea { font-size: 13px; color: var(--gold); font-weight: 600; margin-top: 6px; letter-spacing: 1px; }
.sys-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; border-top: 1px dashed #E3E6EC; margin-top: 16px; padding-top: 14px; }
.sys-stats span { font-size: 12px; color: var(--muted); }
.sys-stats b { display: block; font-size: 19px; color: var(--navy-2); font-weight: 700; line-height: 1.25; }
@media (max-width: 768px) {
  .ov-item { flex: 1 1 140px; }
  .ov-n { font-size: 28px; }
  .ov-t { font-size: 13px; letter-spacing: 1px; }
}
.arch-item:last-child { border-right: none; }
.arch-item .n { font-size: 28px; font-weight: 700; color: var(--navy-2); }
.arch-item .t { font-size: 14px; color: var(--muted); margin-top: 4px; }

/* ============ 关于我们 ============ */
.about-wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.about-visual { background: linear-gradient(135deg, var(--navy), var(--navy-2)); border-radius: var(--radius); color: var(--white); padding: 44px 38px; position: relative; overflow: hidden; }
.about-visual::after { content: "DELE"; position: absolute; right: -10px; bottom: -26px; font-size: 110px; font-weight: 800; color: rgba(255,255,255,.05); letter-spacing: 6px; }
.about-visual h3 { font-size: 22px; color: var(--gold-light); margin-bottom: 14px; }
.about-visual p { color: rgba(255,255,255,.85); font-size: 15px; }
.about-visual ul { margin-top: 18px; }
.about-visual li { padding: 7px 0; border-bottom: 1px dashed rgba(255,255,255,.15); font-size: 15px; }
.about-visual li::before { content: "◆"; color: var(--gold); margin-right: 10px; font-size: 12px; }
.about-text h2 { font-size: 30px; color: var(--navy); margin-bottom: 20px; }
.about-text p { color: #4B5563; margin-bottom: 14px; text-align: justify; }
.about-vals { margin-top: 22px; display: flex; gap: 14px; flex-wrap: wrap; }
.about-vals span { background: var(--beige); color: var(--navy); padding: 8px 18px; border-radius: 999px; font-size: 14px; font-weight: 600; }

/* ============ 学术贡献 ============ */
.contrib-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contrib-card { background: var(--white); border-radius: var(--radius); padding: 28px; box-shadow: 0 4px 16px rgba(31,42,68,.06); transition: all .3s; border: 1px solid transparent; border-top: 3px solid transparent; }
.contrib-card:hover { border-color: var(--gold); border-top-color: var(--gold); transform: translateY(-4px); }
.contrib-card .no { font-size: 14px; color: var(--gold); font-weight: 700; letter-spacing: 2px; }
.contrib-card h3 { font-size: 18px; color: var(--navy); margin: 10px 0 8px; }
.contrib-card h3 a { transition: color .2s; }
.contrib-card h3 a:hover { color: var(--gold); }
.contrib-card p { font-size: 14px; color: var(--muted); }
/* 首页紧凑版：一行 6 个小卡片（归档页不受影响） */
.contrib-grid--compact { grid-template-columns: repeat(6, 1fr); gap: 14px; }
.contrib-grid--compact .contrib-card { border-radius: 10px; padding: 16px 14px 18px; box-shadow: 0 4px 14px rgba(31,42,68,.06); }
.contrib-grid--compact .contrib-card .no { font-size: 12px; letter-spacing: 1px; }
.contrib-grid--compact .contrib-card h3 { font-size: 14px; margin: 8px 0 6px; line-height: 1.5; }
.contrib-grid--compact .contrib-card p { font-size: 12px; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ============ 咨询案例 ============ */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: 0 4px 16px rgba(31,42,68,.06); transition: all .3s; border: 1px solid transparent; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--gold); }
.case-cover { position: relative; height: 150px; background: linear-gradient(135deg, var(--navy-2), var(--navy)); overflow: hidden; }
.case-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s; }
.case-card:hover .case-cover img { transform: scale(1.06); }
.case-cover .news-cover-fallback { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--gold-light); font-size: 42px; font-weight: 800; letter-spacing: 3px; }
.case-body { padding: 22px 24px 26px; }
.case-tag { display: inline-block; background: var(--beige); color: var(--navy); font-size: 12px; padding: 3px 12px; border-radius: 999px; font-weight: 600; }
.case-body h3 { font-size: 17px; color: var(--navy); margin: 12px 0 8px; line-height: 1.5; }
.case-body h3 a { transition: color .2s; }
.case-body h3 a:hover { color: var(--gold); }
.case-body p { font-size: 14px; color: var(--muted); }
.center-more { text-align: center; margin-top: 40px; }
.btn-line { display: inline-block; padding: 12px 40px; border: 1px solid var(--navy-2); color: var(--navy-2); border-radius: 999px; font-weight: 600; transition: all .25s; }
.btn-line:hover { background: var(--navy-2); color: var(--white); }

/* ============ 新闻动态（图文卡片） ============ */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.news-card { background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: 0 4px 16px rgba(31,42,68,.06); transition: all .3s; display: flex; flex-direction: column; border: 1px solid transparent; }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--gold); }
.news-cover { display: block; height: 150px; background: linear-gradient(135deg, var(--navy-2), var(--navy)); overflow: hidden; position: relative; }
.news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.news-card:hover .news-cover img { transform: scale(1.06); }
.news-cover-fallback { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--gold-light); font-size: 20px; font-weight: 800; letter-spacing: 3px; transition: all .3s; }
.news-card:hover .news-cover-fallback { color: var(--white); letter-spacing: 5px; }
.news-body { padding: 18px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.news-tag { font-size: 12px; color: var(--gold); font-weight: 700; letter-spacing: 1px; }
.news-body h3 { font-size: 15px; line-height: 1.6; margin: 8px 0; font-weight: 600; }
.news-body h3 a { color: var(--ink); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color .2s; }
.news-body h3 a:hover { color: var(--gold); }
.news-body p { font-size: 13px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ============ 服务客户品牌墙 ============ */
.clients-band { line-height: 0; background: var(--bg); }
.clients-band img { width: 100%; height: auto; display: block; }

/* ============ CTA ============ */
.cta-band { background: linear-gradient(120deg, var(--navy), var(--navy-2)); color: var(--white); padding: 58px 0; }
.cta-band .container { display: flex; justify-content: space-between; align-items: center; gap: 30px; flex-wrap: wrap; }
.cta-band h2 { font-size: 26px; }
.cta-band h2 em { color: var(--gold-light); font-style: normal; }
.cta-band p { color: rgba(255,255,255,.75); margin-top: 8px; }

/* ============ 页头（内页） ============ */
.page-hero { background: linear-gradient(120deg, var(--navy), var(--navy-2)); color: var(--white); padding: 20px 0; }
.page-hero h1 { font-size: 26px; }
.page-hero .crumb { color: rgba(255,255,255,.65); font-size: 13px; margin-top: 5px; }
.page-hero .crumb a:hover { color: var(--gold-light); }

/* ============ 正文 / 内页 ============ */
.page-content { padding: 60px 0 80px; }
.entry { max-width: 900px; margin: 0 auto; }
.entry p { margin-bottom: 16px; color: #3A4050; text-align: justify; }
.entry h2, .entry h3 { color: var(--navy); margin: 28px 0 14px; }
.entry ul { list-style: disc; padding-left: 24px; margin-bottom: 16px; color: #3A4050; }
.entry img { border-radius: 10px; margin: 18px 0; }

/* 系统页引言（替代原来的子栏目标题） */
.sys-lead { background: #F7F9FC; border-radius: 12px; padding: 38px 40px; text-align: center; box-shadow: 0 2px 12px rgba(31,42,68,.05); position: relative; }
.sys-lead::before,
.sys-lead::after { content: ''; display: block; width: 44px; height: 3px; background: var(--gold); border-radius: 2px; margin: 0 auto; }
.sys-lead::before { margin-bottom: 18px; }
.sys-lead::after { margin-top: 18px; }
.sys-lead p { font-size: 17px; line-height: 1.9; color: var(--navy); max-width: 760px; margin: 0 auto; text-align: center; }

/* ============ 联系我们 / 表单 ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
.contact-card { background: var(--white); border-radius: var(--radius); padding: 34px; box-shadow: 0 4px 16px rgba(31,42,68,.06); }
.contact-card h3 { color: var(--navy); font-size: 20px; margin-bottom: 20px; }
.contact-line { display: flex; gap: 14px; padding: 13px 0; border-bottom: 1px dashed #E3E6EC; font-size: 15px; }
.contact-line:last-child { border-bottom: none; }
.contact-line .k { color: var(--muted); min-width: 64px; }
.contact-line .v { color: var(--ink); font-weight: 600; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.field input, .field textarea, .field select { width: 100%; border: 1px solid #D9DDE5; border-radius: 10px; padding: 12px 14px; font-size: 15px; font-family: inherit; background: var(--bg); transition: border .2s; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--gold); background: var(--white); }
.hp-field { position: absolute; left: -9999px; }
.form-tip { font-size: 13px; color: var(--muted); margin-top: 10px; }
.form-ok { background: #EEF7F0; border: 1px solid #BFE3C8; color: #2F7A42; padding: 14px 18px; border-radius: 10px; margin-bottom: 18px; }

/* ============ 微信公众号（放在页脚品牌列） ============ */
.f-brand-top { margin-bottom: 18px; }
.f-brand-card { display: inline-flex; align-items: center; gap: 0; background: var(--white); border-radius: 12px; padding: 10px 14px; box-shadow: 0 6px 18px rgba(0,0,0,.14); }
.f-logo { flex: none; display: flex; align-items: center; justify-content: center; height: 72px; padding: 0 4px; }
.f-logo img { height: 56px; width: auto; display: block; }
.f-divider { width: 1px; height: 50px; background: #E3E6EC; margin: 0 12px; flex: none; }
.f-qr { flex: none; width: 72px; text-align: center; }
.f-qr img { width: 72px; height: 72px; border-radius: 6px; display: block; padding: 0; background: transparent; }
.f-qr span { display: block; font-size: 11px; color: var(--muted); margin-top: 6px; }

/* ============ 页脚（重设计） ============ */
.site-footer { background: var(--navy); color: rgba(255,255,255,.72); font-size: 14px; border-top: 3px solid var(--gold); }
.footer-main { padding: 60px 0 44px; display: grid; grid-template-columns: 1.5fr .8fr .9fr 1.25fr; gap: 40px; }
.site-footer h4 { color: var(--white); font-size: 16px; margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.site-footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--gold); }
.f-slogan { color: var(--gold-light); font-weight: 600; margin: 18px 0 10px; letter-spacing: 1px; }
.f-brand p { font-size: 14px; color: rgba(255,255,255,.6); line-height: 1.8; text-align: justify; }
.site-footer li { padding: 4px 0; }
.site-footer a { transition: color .2s; }
.site-footer a:hover { color: var(--gold-light); text-decoration: underline; text-underline-offset: 3px; }
.f-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 20px; }
.f-nav a, .f-sys a { display: inline-block; padding: 3px 0; }
.f-sys a::before { content: "◆"; color: var(--gold); font-size: 10px; margin-right: 8px; vertical-align: 1px; }
.f-contact-list .hot { color: var(--gold-light); font-weight: 700; font-size: 15px; letter-spacing: .5px; }
.f-contact-list li { display: flex; gap: 10px; align-items: flex-start; padding: 6px 0; line-height: 1.6; }
.f-contact-list a { color: inherit; text-decoration: none; }
.f-contact-list a:hover { color: var(--gold-light); }
.f-contact-list svg { flex: none; color: var(--gold); margin-top: 4px; }
.contact-line .v a { color: inherit; text-decoration: none; }
.contact-line .v a:hover { color: var(--gold); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 20px 0; text-align: center; color: rgba(255,255,255,.5); font-size: 13px; }
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: var(--gold-light); }

/* ============ 在线问答 ============ */
.qa-layout { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: start; }
.qa-list { display: grid; gap: 14px; }
.qa-item { background: var(--white); border-radius: 12px; box-shadow: 0 4px 16px rgba(31,42,68,.06); overflow: hidden; border: 1px solid #EDEFF3; }
.qa-item summary { list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 600; color: var(--ink); font-size: 16px; display: flex; align-items: flex-start; gap: 14px; line-height: 1.6; }
.qa-item summary::-webkit-details-marker { display: none; }
.qa-item summary::after { content: "+"; margin-left: auto; color: var(--gold); font-size: 22px; font-weight: 700; transition: transform .2s; }
.qa-item[open] summary::after { transform: rotate(45deg); }
.qa-item summary:hover { color: var(--navy-2); }
.qa-item .q { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--navy); color: var(--gold-light); font-size: 13px; display: flex; align-items: center; justify-content: center; font-weight: 700; margin-top: 3px; }
.qa-answer { padding: 0 24px 22px 64px; }
.qa-answer .a { float: left; width: 26px; height: 26px; border-radius: 50%; background: var(--gold); color: var(--white); font-size: 13px; display: flex; align-items: center; justify-content: center; font-weight: 700; margin: 2px 12px 4px 0; }
.qa-content { color: #4B5563; font-size: 15px; line-height: 1.8; }
.qa-content p { margin-bottom: 10px; }

/* 首页问答精选 */
.home-qa-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 8px; }
.home-qa-item { background: var(--white); border-radius: var(--radius); padding: 22px 26px; box-shadow: 0 4px 16px rgba(31,42,68,.06); }
.home-qa-item .q-t { display: flex; gap: 12px; align-items: flex-start; font-weight: 600; color: var(--navy); font-size: 15px; line-height: 1.6; }
.home-qa-item .q-t .q { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--navy); color: var(--gold-light); font-size: 12px; display: flex; align-items: center; justify-content: center; font-weight: 700; margin-top: 2px; }
.home-qa-item .a-t { margin-top: 12px; padding-left: 36px; font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ============ 返回顶部 ============ */
.back-top { position: fixed; right: 28px; bottom: 104px; width: 46px; height: 46px; border-radius: 50%; background: var(--navy); color: var(--gold-light); display: flex; align-items: center; justify-content: center; font-size: 20px; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: all .3s; z-index: 998; }
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--navy-2); }

/* ============ 即时聊天窗口 ============ */
.chat-fab { position: fixed; right: 24px; bottom: 28px; z-index: 1000; display: flex; align-items: center; gap: 8px; padding: 12px 22px; border: none; border-radius: 999px; background: linear-gradient(120deg, var(--navy), var(--navy-2)); color: var(--gold-light); font-size: 15px; font-weight: 600; cursor: pointer; box-shadow: 0 8px 24px rgba(31,42,68,.35); transition: all .25s; font-family: inherit; }
.chat-fab:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(31,42,68,.45); }
.chat-fab.hide { display: none; }
.chat-panel { position: fixed; right: 24px; bottom: 28px; z-index: 1001; width: 360px; max-width: calc(100vw - 32px); height: 520px; max-height: calc(100vh - 56px); background: var(--white); border-radius: 16px; box-shadow: 0 20px 60px rgba(31,42,68,.35); display: none; flex-direction: column; overflow: hidden; }
.chat-panel.open { display: flex; }
.chat-head { background: linear-gradient(120deg, var(--navy), var(--navy-2)); color: var(--white); padding: 16px 18px; display: flex; justify-content: space-between; align-items: center; }
.chat-title { font-weight: 700; font-size: 16px; }
.chat-sub { font-size: 12px; color: rgba(255,255,255,.65); margin-top: 3px; }
.chat-close { background: rgba(255,255,255,.15); border: none; color: var(--white); width: 30px; height: 30px; border-radius: 50%; font-size: 18px; cursor: pointer; line-height: 1; }
.chat-close:hover { background: rgba(255,255,255,.28); }
.chat-msgs { flex: 1; overflow-y: auto; padding: 16px; background: var(--bg); display: flex; flex-direction: column; }
.chat-m { display: flex; margin-bottom: 10px; }
.chat-m.admin { justify-content: flex-start; }
.chat-m.visitor { justify-content: flex-end; }
.chat-m .bubble { max-width: 78%; padding: 9px 13px; border-radius: 12px; font-size: 14px; line-height: 1.6; white-space: pre-wrap; word-break: break-word; }
.chat-m.admin .bubble { background: var(--white); border: 1px solid #E3E6EC; border-top-left-radius: 4px; }
.chat-m.visitor .bubble { background: var(--navy-2); color: var(--white); border-top-right-radius: 4px; }
.chat-form { border-top: 1px solid #E3E6EC; padding: 10px 12px 12px; background: var(--white); }
.chat-fields { display: flex; gap: 8px; margin-bottom: 8px; }
.chat-fields input { flex: 1; border: 1px solid #D9DDE5; border-radius: 8px; padding: 7px 10px; font-size: 13px; font-family: inherit; background: var(--bg); }
.chat-fields input:focus { outline: none; border-color: var(--gold); background: var(--white); }
.chat-inputrow { display: flex; gap: 8px; align-items: flex-end; }
.chat-inputrow textarea { flex: 1; border: 1px solid #D9DDE5; border-radius: 10px; padding: 9px 11px; font-size: 14px; font-family: inherit; resize: none; background: var(--bg); }
.chat-inputrow textarea:focus { outline: none; border-color: var(--gold); background: var(--white); }
.chat-inputrow button { flex: none; border: none; background: var(--gold); color: var(--white); border-radius: 10px; padding: 9px 18px; font-size: 14px; font-weight: 600; cursor: pointer; font-family: inherit; }
.chat-inputrow button:hover { background: #A8894E; }
@media (max-width: 768px) {
  .chat-panel { right: 16px; bottom: 16px; }
  .chat-fab { right: 16px; bottom: 16px; }
  .back-top { right: 20px; bottom: 92px; }
}

/* ============ 列表页 ============ */
.arch-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pager { margin-top: 40px; text-align: center; }
.pager .page-numbers { display: inline-block; min-width: 40px; padding: 8px 12px; margin: 0 4px; border-radius: 8px; background: var(--white); border: 1px solid #E3E6EC; color: var(--ink); font-size: 14px; }
.pager .page-numbers.current, .pager .page-numbers:hover { background: var(--navy-2); color: var(--white); border-color: var(--navy-2); }

/* ============ 响应式 ============ */
@media (max-width: 1280px) {
  .contrib-grid--compact { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 1024px) {
  .sys-grid { grid-template-columns: repeat(3, 1fr); }
  .sys-arch { grid-template-columns: repeat(2, 1fr); }
  .arch-item { border-right: none; }
  .contrib-grid, .case-grid, .arch-grid { grid-template-columns: repeat(2, 1fr); }
  .contrib-grid--compact { grid-template-columns: repeat(3, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px; }
  .qa-layout { grid-template-columns: 1fr; }
  .home-qa-grid { grid-template-columns: 1fr; }
  .about-wrap, .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .topbar .tb-left { display: none; }
  .site-header .container { height: 68px; }
  .brand img { height: 44px; }
  .nav-toggle { display: block; }
  .header-qr { display: none; }
  .main-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--white); box-shadow: var(--shadow); }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; padding: 12px 20px; }
  .main-nav > ul > li > a { flex-direction: row; align-items: baseline; justify-content: flex-start; gap: 8px; }
  .main-nav .nav-en { margin-top: 0; font-size: 11px; letter-spacing: .6px; }
  .main-nav .sub-menu { position: static; box-shadow: none; border-top: none; padding-left: 16px; }
  .hero h1 { font-size: 28px; }
  .hero .container { padding-top: 64px; padding-bottom: 72px; }
  .hero-stats { gap: 28px; }
  .sys-grid, .contrib-grid, .case-grid, .arch-grid { grid-template-columns: 1fr; }
  .contrib-grid--compact { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr; }
  .sys-arch { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .f-brand-card { padding: 8px 10px; border-radius: 10px; }
  .f-logo { height: 56px; padding: 0 4px; }
  .f-logo img { height: 44px; }
  .f-divider { height: 40px; margin: 0 8px; }
  .f-qr { width: 56px; }
  .f-qr img { width: 56px; height: 56px; }
  .f-qr span { font-size: 10px; }
  .form-grid { grid-template-columns: 1fr; }
  .cta-band .container { flex-direction: column; text-align: center; }
}

/* ---------- 产品板块卡片（系统详情页 / 板块详情页） ---------- */
.plate-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 32px; }
.plate-card { position: relative; display: block; background: var(--white); border: 1px solid #ECEEF2; border-radius: 12px; padding: 26px 22px 22px; overflow: hidden; transition: all .28s; }
.plate-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--gold); opacity: 0; transition: opacity .28s; }
.plate-card:hover { transform: translateY(-6px); box-shadow: 0 12px 28px rgba(31,42,68,.10); border-color: rgba(184,155,94,.45); }
.plate-card:hover::before { opacity: 1; }
.plate-no { display: inline-block; font-size: 13px; font-weight: 700; color: var(--gold); letter-spacing: 1px; margin-bottom: 10px; }
.plate-card h3 { font-size: 17px; color: var(--navy); font-weight: 700; margin: 0 0 10px; line-height: 1.5; transition: color .25s; }
.plate-card:hover h3 { color: var(--gold); }
.plate-card p { font-size: 13px; color: var(--muted); line-height: 1.75; margin: 0; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* 板块详情页 */
.module-lead { font-size: 16px; line-height: 1.9; color: var(--navy); background: #F7F9FC; border-left: 3px solid var(--gold); padding: 16px 20px; border-radius: 0 8px 8px 0; margin-bottom: 26px; text-align: justify; }
.module-back { max-width: 900px; margin: 34px auto 0; text-align: center; }

/* v24 栏目页：兄弟栏目 tab */
.sibling-tabs { background: var(--white); border-bottom: 1px solid #ECEEF2; display: flex; gap: 2px; overflow-x: auto; }
.sibling-tabs .container { display: flex; gap: 2px; padding-left: 0; padding-right: 0; }
.sibling-tabs a { padding: 14px 20px; font-size: 14px; color: var(--muted); text-decoration: none; border-bottom: 2px solid transparent; white-space: nowrap; transition: color .2s; flex: none; }
.sibling-tabs a:hover { color: var(--navy); }
.sibling-tabs a.on { color: var(--gold); border-bottom-color: var(--gold); font-weight: 600; }

/* v24 栏目页：子栏目区块标题 */
.child-head { text-align: center; margin: 40px 0 26px; }
.child-head .cap { color: var(--gold); font-size: 13px; letter-spacing: 4px; text-transform: uppercase; font-weight: 600; }
.child-head h2 { font-size: 24px; color: var(--navy); margin-top: 6px; font-weight: 700; }
.child-head .line { width: 46px; height: 3px; background: var(--gold); margin: 12px auto 0; border-radius: 2px; }

@media (max-width: 1280px) { .plate-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 1024px) { .plate-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px)  { .plate-grid { grid-template-columns: 1fr; } }

/* ---- 德乐动态：正文图片组（2026-09-12 修复老站图片缺失） ---- */
.dele-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 24px 0 6px; }
.dele-gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 10px; margin: 0 !important; display: block; }
.dele-hero-img { width: 100%; height: auto; border-radius: 10px; margin: 0 0 20px !important; display: block; }
@media (max-width: 640px) { .dele-gallery { grid-template-columns: 1fr; } }