/* ==========================================================================
   北京嘉实兴装饰装修有限公司 · 官网样式表
   设计基调：严格沿用《嘉实兴公司介绍-画册版》方案A（经典稳重风）
   藏蓝 #1a2744 / 金 #b8860b / 米白 #fdfbf7 / 宋体标题 + 黑体正文
   说明：不引外链（Google Fonts 国内不可用），改用系统字体栈，
        优先 Noto Serif CJK SC（思源宋体）与 Noto Sans CJK SC（思源黑体）。
   ========================================================================== */

:root {
  /* —— 样板A 原始令牌（一字未改） —— */
  --primary:       #1a2744;
  --primary-light: #2c3e6b;
  --gold:          #b8860b;
  --gold-light:    #daa520;
  --bg:            #fdfbf7;
  --text:          #2d2d2d;
  --light:         #8b7355;

  /* —— 派生令牌（由样板A的 rgba 用法归纳，不引入新色相） —— */
  --gold-08: rgba(184, 134, 11, 0.08);
  --gold-15: rgba(184, 134, 11, 0.15);
  --gold-20: rgba(184, 134, 11, 0.20);
  --gold-30: rgba(184, 134, 11, 0.30);
  --white:   #ffffff;
  --ink-60:  rgba(45, 45, 45, 0.60);

  /* 渐变（照抄样板 A 的封面渐变） */
  --grad-cover: linear-gradient(135deg, #1a2744 0%, #2c3e6b 50%, #1a2744 100%);
  --grad-gold:  linear-gradient(90deg, transparent, #daa520, transparent);
  --grad-title: linear-gradient(180deg, #ffffff 0%, #daa520 100%);

  /* 字体栈：本地优先，不依赖外网 */
  --font-serif: 'Noto Serif SC', 'Noto Serif CJK SC', 'Source Han Serif SC',
                'Songti SC', 'STSong', 'SimSun', serif;
  --font-sans:  'Noto Sans SC', 'Noto Sans CJK SC', 'Source Han Sans SC',
                'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;

  --wrap: 1180px;
  --radius: 8px;
  --shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }

/* ============================ 顶部导航 ============================ */
.site-nav {
  position: sticky; top: 0; z-index: 90;
  background: rgba(26, 39, 68, 0.97);
  border-bottom: 1px solid var(--gold-30);
  backdrop-filter: blur(8px);
}
.site-nav .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 74px;
}
.nav-brand { display: flex; align-items: center; gap: 12px; }
.nav-brand img { height: 42px; width: auto; border-radius: 4px; }
.nav-brand .brand-text { color: #fff; }
.nav-brand .brand-cn {
  font-family: var(--font-serif); font-size: 19px; font-weight: 700;
  letter-spacing: 3px; display: block; line-height: 1.25;
}
.nav-brand .brand-en {
  font-size: 10px; letter-spacing: 2.5px;
  color: var(--gold-light); opacity: 0.85; display: block;
}
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a {
  color: rgba(255, 255, 255, 0.80); font-size: 14px;
  padding: 4px 0; border-bottom: 2px solid transparent;
  transition: color .25s, border-color .25s;
}
.nav-links a:hover { color: var(--gold-light); }
.nav-links a.active { color: var(--gold-light); border-bottom-color: var(--gold); }
.nav-cta {
  margin-left: 8px; padding: 9px 22px !important;
  background: var(--gold); color: #fff !important;
  border-radius: 30px; font-weight: 500; border-bottom: none !important;
}
.nav-cta:hover { background: var(--gold-light); color: #fff !important; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--gold-30);
  color: var(--gold-light); border-radius: 6px;
  width: 40px; height: 36px; font-size: 18px; cursor: pointer;
}

/* ============================ 封面 Hero ============================ */
.hero {
  position: relative; overflow: hidden;
  background: var(--grad-cover);
  color: #fff;
  padding: 104px 0 96px;
}
.hero::before,
.hero::after {
  content: ''; position: absolute; border-radius: 50%;
  border: 1px solid var(--gold-30); pointer-events: none;
}
.hero::before { top: 46px; right: 64px; width: 168px; height: 168px; }
.hero::after  { top: 78px; right: 96px; width: 104px; height: 104px;
                border-color: rgba(218, 165, 32, 0.20); }
.hero .bottom-line {
  position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
  background: var(--grad-gold);
}
.hero-label {
  font-size: 12px; letter-spacing: 6px; color: var(--gold-light);
  margin-bottom: 22px; opacity: 0.9;
}
.hero h1 {
  font-family: var(--font-serif); font-size: 46px; font-weight: 700;
  letter-spacing: 8px; line-height: 1.35; margin-bottom: 18px;
  background: var(--grad-title);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero .slogan {
  font-size: 17px; letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.72); margin-top: 10px;
}
.hero .hero-sub {
  max-width: 660px; margin-top: 26px; font-size: 15px;
  line-height: 2; color: rgba(255, 255, 255, 0.66);
}
.hero-actions { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 13px 34px; border-radius: 30px;
  font-size: 14px; letter-spacing: 1px; transition: all .25s;
}
.btn-gold { background: var(--gold); color: #fff; }
.btn-gold:hover { background: var(--gold-light); transform: translateY(-2px); }
.btn-ghost {
  border: 1px solid var(--gold-30); color: var(--gold-light);
}
.btn-ghost:hover { border-color: var(--gold-light); background: rgba(218,165,32,.08); }

/* 封面内联数据条 */
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; margin-top: 62px;
  background: var(--gold-20); border: 1px solid var(--gold-20);
}
.hero-stats .cell {
  background: rgba(26, 39, 68, 0.55); padding: 24px 16px; text-align: center;
}
.hero-stats .num {
  font-family: var(--font-serif); font-size: 30px; font-weight: 700;
  color: var(--gold-light); line-height: 1;
}
.hero-stats .num small { font-size: 14px; margin-left: 2px; }
.hero-stats .label {
  font-size: 12px; color: rgba(255, 255, 255, 0.62);
  margin-top: 8px; letter-spacing: 1px;
}

/* ============================ 通用区块 ============================ */
.section { padding: 76px 0; border-bottom: 1px solid var(--gold-15); }
.section:last-of-type { border-bottom: none; }
.section-alt { background: #fff; }

.sec-head { margin-bottom: 40px; }
.sec-title {
  font-family: var(--font-serif); font-size: 27px; font-weight: 700;
  color: var(--primary); position: relative; padding-left: 17px;
  letter-spacing: 1px; line-height: 1.5;
}
.sec-title::before {
  content: ''; position: absolute; left: 0; top: 9px;
  width: 4px; height: 24px; background: var(--gold); border-radius: 2px;
}
.sec-sub {
  font-size: 12px; color: var(--light); letter-spacing: 2px;
  padding-left: 17px; margin-top: 6px; text-transform: uppercase;
}
.sec-lead {
  font-size: 14px; color: var(--light);
  padding-left: 17px; margin-top: 10px; max-width: 760px;
}

/* 正文段落 */
.prose { font-size: 15px; line-height: 2.05; color: var(--text); }
.prose p { margin-bottom: 15px; }
.prose strong { color: var(--primary); font-weight: 600; }

/* ============================ 数据卡片 ============================ */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.stat {
  text-align: center; padding: 26px 14px;
  background: #fff; border: 1px solid var(--gold-20);
  border-radius: var(--radius);
}
.stat .num {
  font-family: var(--font-serif); font-size: 32px; font-weight: 700;
  color: var(--gold); line-height: 1; margin-bottom: 8px;
}
.stat .num small { font-size: 15px; }
.stat .label { font-size: 13px; color: var(--light); }

/* ============================ 业务板块卡片 ============================ */
.biz-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.biz-card {
  background: #fff; border: 1px solid var(--gold-20);
  border-radius: var(--radius); padding: 28px;
  display: flex; gap: 18px; transition: box-shadow .25s, transform .25s;
}
.biz-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.biz-icon {
  flex-shrink: 0; width: 54px; height: 54px;
  background: linear-gradient(135deg, #1a2744, #2c3e6b);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; line-height: 1;
}
.biz-body h3 {
  font-family: var(--font-serif); font-size: 18px; color: var(--primary);
  margin-bottom: 8px; letter-spacing: 1px;
}
.biz-body p { font-size: 14px; color: var(--light); line-height: 1.85; }
.biz-body ul {
  margin-top: 12px; padding-left: 0; list-style: none;
  border-top: 1px dashed var(--gold-20); padding-top: 12px;
}
.biz-body li {
  font-size: 13px; color: var(--light); padding-left: 16px;
  position: relative; margin-bottom: 4px;
}
.biz-body li::before {
  content: ''; position: absolute; left: 0; top: 11px;
  width: 5px; height: 5px; background: var(--gold); border-radius: 50%;
}

/* ============================ 优势（编号列表） ============================ */
.advantages { margin-top: 6px; }
.adv {
  display: flex; gap: 22px; padding: 24px 0;
  border-bottom: 1px dashed var(--gold-20);
}
.adv:last-child { border-bottom: none; }
.adv-num {
  font-family: var(--font-serif); font-size: 38px; font-weight: 700;
  color: var(--gold); opacity: 0.6; line-height: 1;
  flex-shrink: 0; width: 58px;
}
.adv-body h4 {
  font-family: var(--font-serif); font-size: 18px; color: var(--primary);
  margin-bottom: 8px; letter-spacing: 1px;
}
.adv-body p { font-size: 14px; color: var(--light); line-height: 1.95; }

/* ============================ 资质清单 ============================ */
.certs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 13px; }
.cert {
  display: flex; align-items: center; gap: 14px;
  padding: 15px 20px; background: #fff;
  border: 1px solid var(--gold-15); border-radius: 6px;
  font-size: 14px; color: var(--text);
}
.cert .badge {
  width: 30px; height: 30px; flex-shrink: 0;
  background: var(--gold); color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; line-height: 1;
}
.cert .lv { margin-left: auto; font-size: 12px; color: var(--gold); font-weight: 600; }

/* ============================ 案例卡片 ============================ */
.case-filters {
  display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 32px;
}
.case-btn {
  padding: 9px 24px; border: 1px solid var(--gold-20); background: #fff;
  border-radius: 30px; font-size: 13px; cursor: pointer;
  color: var(--light); transition: all .25s; font-family: var(--font-sans);
}
.case-btn:hover { border-color: var(--gold); color: var(--gold); }
.case-btn.active {
  background: var(--primary); border-color: var(--primary); color: var(--gold-light);
}

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  background: #fff; border: 1px solid var(--gold-20);
  border-radius: var(--radius); overflow: hidden; cursor: pointer;
  transition: box-shadow .25s, transform .25s;
}
.case-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.case-cover {
  height: 132px; background: linear-gradient(135deg, #2c3e6b, #1a2744);
  display: flex; align-items: center; justify-content: center;
  font-size: 40px; line-height: 1; position: relative;
}
.case-cover .tag {
  position: absolute; left: 12px; top: 12px;
  background: var(--gold); color: #fff; font-size: 11px;
  padding: 3px 11px; border-radius: 20px; letter-spacing: 1px;
}
.case-body { padding: 18px 20px; }
.case-body h3 {
  font-size: 15px; color: var(--primary); font-weight: 600;
  margin-bottom: 6px; line-height: 1.5;
}
.case-body .meta {
  font-size: 12px; color: var(--light); line-height: 1.9;
}
.case-body .amount {
  font-family: var(--font-serif); font-size: 19px; font-weight: 700;
  color: var(--gold); margin-top: 8px;
}
.case-tags { margin-top: 10px; display: flex; gap: 6px; flex-wrap: wrap; }
.case-tags span {
  font-size: 11px; color: var(--gold); background: var(--gold-08);
  border: 1px solid var(--gold-20); padding: 2px 9px; border-radius: 20px;
}

/* ============================ 案例详情弹层 ============================ */
.modal {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(15, 23, 42, 0.72); padding: 40px 20px;
  overflow-y: auto;
}
.modal.open { display: block; }
.modal-box {
  max-width: 760px; margin: 0 auto; background: var(--bg);
  border-top: 4px solid var(--gold); box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.modal-cover {
  height: 150px; background: linear-gradient(135deg, #2c3e6b, #1a2744);
  display: flex; align-items: center; justify-content: center;
  font-size: 52px; position: relative;
}
.modal-close {
  position: absolute; right: 16px; top: 14px;
  background: rgba(255,255,255,.14); border: 1px solid var(--gold-30);
  color: var(--gold-light); width: 36px; height: 36px; border-radius: 50%;
  font-size: 18px; cursor: pointer; line-height: 1;
}
.modal-body { padding: 34px 40px 40px; }
.modal-body h2 {
  font-family: var(--font-serif); font-size: 23px; color: var(--primary);
  margin-bottom: 6px; letter-spacing: 1px;
}
.modal-body .modal-sub {
  font-size: 14px; color: var(--light); margin-bottom: 22px;
  padding-bottom: 18px; border-bottom: 1px dashed var(--gold-20);
}
.modal-facts {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 12px; margin-bottom: 24px;
}
.modal-facts .f {
  background: #fff; border: 1px solid var(--gold-15);
  border-radius: 6px; padding: 12px 16px; font-size: 13px; color: var(--light);
}
.modal-facts .f b { color: var(--primary); font-weight: 600; }
.modal-body h4 {
  font-family: var(--font-serif); font-size: 15px; color: var(--primary);
  margin: 22px 0 8px; letter-spacing: 1px;
}
.modal-body .prose { font-size: 14px; }

/* ============================ 底部 ============================ */
.site-foot {
  background: var(--primary); color: rgba(255,255,255,.72);
  padding: 60px 0 26px; position: relative;
}
.site-foot::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0;
  height: 3px; background: var(--grad-gold);
}
.foot-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px; padding-bottom: 40px;
  border-bottom: 1px solid rgba(218,165,32,.22);
}
.foot-grid h4 {
  font-family: var(--font-serif); color: var(--gold-light); font-size: 15px;
  margin-bottom: 16px; letter-spacing: 1.5px;
}
.foot-grid p, .foot-grid li { font-size: 13px; line-height: 2; }
.foot-grid ul { list-style: none; }
.foot-grid li a:hover { color: var(--gold-light); }
.foot-brand .brand-cn {
  font-family: var(--font-serif); font-size: 20px; color: #fff;
  letter-spacing: 3px; margin-bottom: 10px;
}
.foot-brand .slogan {
  color: var(--gold-light); font-size: 14px; letter-spacing: 2px;
  margin-bottom: 14px;
}
.foot-bottom {
  padding-top: 22px; font-size: 12px;
  color: rgba(255,255,255,.48); text-align: center; line-height: 2;
}
.foot-bottom a { color: rgba(255,255,255,.60); }

/* 备案号（法定义务：展示 + 链接工信部备案系统） */
.icp-row { margin-top: 10px; }
.icp-row .icp-link {
  display: inline-block; color: rgba(255,255,255,.55);
  text-decoration: none; font-size: 12px; letter-spacing: .5px;
  border-bottom: 1px dotted rgba(255,255,255,.28);
  padding-bottom: 1px;
  transition: color .2s, border-color .2s;
}
.icp-row .icp-link:hover {
  color: var(--gold-light); border-bottom-color: var(--gold-light);
}

/* ============================ 导航内联标记 ============================ */
.nav-links a { position: relative; }
.nav-badge {
  font-style: normal; font-size: 10px; letter-spacing: 0;
  background: rgba(218,165,32,.22); color: var(--gold-light);
  border: 1px solid rgba(218,165,32,.45);
  padding: 1px 6px; border-radius: 20px; margin-left: 5px;
  vertical-align: 2px;
}

/* ============================ 首页门户入口卡 ============================ */
.entries {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.entry {
  display: block; background: #fff;
  border: 1px solid var(--gold-20); border-radius: var(--radius);
  padding: 26px 24px 22px; position: relative;
  transition: box-shadow .25s, transform .25s, border-color .25s;
}
.entry::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--gold); opacity: 0; transition: opacity .25s;
  border-radius: var(--radius) 0 0 var(--radius);
}
.entry:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: var(--gold-30); }
.entry:hover::before { opacity: 1; }
.entry-nav {
  font-family: var(--font-serif); font-size: 19px; font-weight: 700;
  color: var(--primary); letter-spacing: 2px; margin-bottom: 4px;
}
.entry-kind {
  font-size: 11px; letter-spacing: 1.5px; color: var(--gold);
  text-transform: uppercase; margin-bottom: 14px;
}
.entry p {
  font-size: 13px; color: var(--light); line-height: 1.85;
  min-height: 72px;
}
.entry-go {
  font-size: 12px; color: var(--gold); letter-spacing: 1px;
  display: block; margin-top: 14px; padding-top: 12px;
  border-top: 1px dashed var(--gold-20);
}

/* ============================ 业务卡内的分组子清单 ============================ */
.biz-groups {
  margin-top: 12px; padding-top: 12px;
  border-top: 1px dashed var(--gold-20);
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.biz-group h4 {
  font-family: var(--font-serif); font-size: 14px; color: var(--primary);
  margin-bottom: 8px; letter-spacing: 1px;
}
.biz-group ul { margin-top: 0; padding-top: 0; border-top: none; }

/* ============================ 新增业务方向（专区块） ============================ */
.feat-wrap { display: flex; flex-direction: column; gap: 22px; }
.feat-block {
  background: #fff; border: 1px solid var(--gold-20);
  border-radius: var(--radius); padding: 30px 32px 26px;
  position: relative; overflow: hidden;
}
.feat-block::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: linear-gradient(180deg, var(--gold-light), var(--primary));
}
.feat-head { display: flex; gap: 18px; align-items: flex-start; margin-bottom: 22px; }
.feat-icon {
  flex-shrink: 0; width: 58px; height: 58px; font-size: 28px;
  background: linear-gradient(135deg, #1a2744, #2c3e6b); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center; line-height: 1;
}
.feat-head h3 {
  font-family: var(--font-serif); font-size: 21px; color: var(--primary);
  letter-spacing: 2px; margin-bottom: 8px;
}
.feat-head p { font-size: 14px; color: var(--light); line-height: 1.95; }
.feat-cols {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px;
}
.feat-cols.single { grid-template-columns: 1fr; }
.feat-col {
  background: var(--bg); border: 1px solid var(--gold-15);
  border-radius: 6px; padding: 18px 22px;
}
.feat-col h4 {
  font-family: var(--font-serif); font-size: 15px; color: var(--primary);
  margin-bottom: 10px; padding-bottom: 8px;
  border-bottom: 1px solid var(--gold-15); letter-spacing: 1px;
}
.feat-col ul { list-style: none; }
.feat-col li {
  font-size: 13.5px; color: var(--light); line-height: 1.9;
  padding-left: 16px; position: relative; margin-bottom: 5px;
}
.feat-col li::before {
  content: ''; position: absolute; left: 0; top: 11px;
  width: 5px; height: 5px; background: var(--gold); border-radius: 50%;
}
.feat-points {
  list-style: none; margin-top: 20px; padding-top: 18px;
  border-top: 1px dashed var(--gold-20);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
.feat-points li {
  font-size: 13.5px; color: var(--text); line-height: 1.85;
  background: var(--gold-08); border-left: 2px solid var(--gold);
  padding: 11px 15px; border-radius: 0 4px 4px 0;
}

/* 封面正文里的强调字 */
.hero-sub strong { color: var(--gold-light); font-weight: 600; }

/* ============================ 通用工具类 ============================ */
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.center { text-align: center; }
.gold { color: var(--gold); }

.page-hero {
  background: var(--grad-cover); color: #fff;
  padding: 66px 0 58px; position: relative; overflow: hidden;
}
.page-hero::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0;
  height: 3px; background: var(--grad-gold);
}
.page-hero .crumb {
  font-size: 12px; letter-spacing: 3px; color: var(--gold-light);
  opacity: .85; margin-bottom: 14px;
}
.page-hero h1 {
  font-family: var(--font-serif); font-size: 34px; font-weight: 700;
  letter-spacing: 5px; margin-bottom: 12px;
}
.page-hero p { font-size: 14px; color: rgba(255,255,255,.68); letter-spacing: 1px; }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contact-card {
  background: #fff; border: 1px solid var(--gold-20);
  border-radius: var(--radius); padding: 30px;
}
.contact-card h3 {
  font-family: var(--font-serif); font-size: 17px; color: var(--primary);
  margin-bottom: 18px; padding-bottom: 12px;
  border-bottom: 1px solid var(--gold-15); letter-spacing: 1px;
}
.contact-row {
  display: flex; gap: 14px; padding: 11px 0; font-size: 14px;
  border-bottom: 1px dashed var(--gold-15);
}
.contact-row:last-child { border-bottom: none; }
.contact-row .k { color: var(--light); flex-shrink: 0; width: 78px; }
.contact-row .v { color: var(--text); }
.contact-row .v b { color: var(--primary); }

.notice {
  background: var(--gold-08); border-left: 3px solid var(--gold);
  padding: 14px 20px; font-size: 13px; color: var(--light);
  border-radius: 0 6px 6px 0; margin-top: 20px;
}

/* ============================ 响应式 ============================ */
@media (max-width: 1024px) {
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .entries { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
  .wrap { padding: 0 20px; }
  .nav-links {
    display: none; position: absolute; left: 0; right: 0; top: 74px;
    background: rgba(26, 39, 68, 0.99); flex-direction: column;
    padding: 16px 24px 24px; gap: 4px; border-bottom: 1px solid var(--gold-30);
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 11px 0; }
  .nav-cta { text-align: center; margin: 8px 0 0; }
  .nav-toggle { display: block; }

  .hero { padding: 68px 0 62px; }
  .hero h1 { font-size: 30px; letter-spacing: 5px; }
  .hero .slogan { font-size: 14px; letter-spacing: 2px; }
  /* 小屏收窄面包屑字距，避免顶到汉堡按钮 */
  .hero-label { font-size: 11px; letter-spacing: 2.5px; margin-bottom: 16px; }
  .page-hero .crumb { letter-spacing: 2px; }
  .hero::before, .hero::after { display: none; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); margin-top: 40px; }

  .section { padding: 52px 0; }
  .sec-title { font-size: 22px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .biz-grid { grid-template-columns: 1fr; }
  .biz-groups { grid-template-columns: 1fr; }
  .feat-cols { grid-template-columns: 1fr; }
  .feat-points { grid-template-columns: 1fr; }
  .feat-block { padding: 24px 20px 20px; }
  .certs { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .entries { grid-template-columns: 1fr; }
  .adv { gap: 14px; }
  .adv-num { font-size: 30px; width: 46px; }
  .modal { padding: 20px 12px; }
  .modal-body { padding: 24px 22px 30px; }
  .modal-facts { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 26px; }
  .page-hero h1 { font-size: 25px; letter-spacing: 3px; }
}

@media (max-width: 420px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}

/* ============================ 打印 ============================ */
@media print {
  .site-nav, .hero-actions, .nav-toggle, .case-filters, .modal-close { display: none !important; }
  body { background: #fff; color: #000; }
  .hero, .page-hero, .site-foot { background: #1a2744 !important; }
  .section { padding: 24px 0; page-break-inside: avoid; }
  a { color: #000; }
}