/* ===== 建筑碳核算平台 · 官网全局样式（绿白品牌体系，与里站一致）===== */
:root {
  --green: #3B6D11;
  --green-deep: #27500A;
  --green-soft: #EAF3DE;
  --green-mid: #5A8A2A;
  --green-pale: #F6FAEC;
  --ink: #173404;
  --sub: #5F5E5A;
  --border: #E3EDD5;
  --amber: #C77700;
  --teal: #0E8A7D;   /* Nuloop 品牌点缀青绿（eyebrow/时间线等小面积） */
  --teal-deep: #0A6B60; /* 深青（青底上的数字/强调文字，保证对比度） */
  --teal-soft: #E4F3F0;  /* 浅青底（工作流程/CTA 区块背景） */
  --teal-border: #CBE7E1; /* 浅青描边 */
  --gold: #B0821E;   /* 市场机制/价值点缀金（与政策页三色体系一致） */
  --white: #ffffff;
  --max-w: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  background: var(--green-pale);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ===== 顶部导航 ===== */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand { font-size: 18px; font-weight: 600; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.nav-brand .logo { width: 30px; height: 30px; border-radius: 8px; background: var(--green); color: #fff;
  display: inline-flex; align-items: center; justify-content: center; font-size: 16px; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--ink); font-size: 15px; font-weight: 500; position: relative; }
.nav-links a:hover { color: var(--green); text-decoration: none; }
.nav-links a.active { color: var(--green); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 2px; background: var(--green); border-radius: 2px;
}
/* 汉堡按钮（默认隐藏，移动端显示） */
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 36px; height: 36px; background: transparent; border: none;
  cursor: pointer; padding: 6px; border-radius: 6px;
}
.nav-toggle span {
  display: block; width: 100%; height: 2px; background: var(--ink);
  border-radius: 2px; transition: all .25s;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* 移动端遮罩 */
.nav-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4);
  z-index: 99; opacity: 0; transition: opacity .25s;
}
.nav-overlay.show { display: block; opacity: 1; }
.nav-cta {
  background: var(--green); color: #fff !important; padding: 8px 18px;
  border-radius: 8px; font-weight: 500;
}
.nav-cta:hover { background: var(--green-deep); text-decoration: none; }

/* ===== Hero ===== */
.hero {
  padding: 64px 0 48px; position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; top: -80px; right: -60px;
  width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(90,138,42,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; bottom: -120px; left: -80px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(14,138,125,0.10) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--teal); font-size: 12px; font-weight: 500;
  letter-spacing: 3px; text-transform: uppercase; margin-bottom: 18px;
}
.live-dot { width: 9px; height: 9px; border-radius: 50%; background: #E53935;
  animation: bling 1.4s ease-in-out infinite; }
@keyframes bling { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.35;transform:scale(.85)} }
.headline {
  font-size: 44px; font-weight: 600; line-height: 1.2;
  letter-spacing: -0.5px; margin-bottom: 14px; color: var(--ink);
}
.headline em { font-style: normal; color: var(--green); }
.subline { font-size: 16px; color: var(--sub); max-width: 640px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 10px;
  font-size: 15px; font-weight: 500; cursor: pointer; transition: all .15s;
}
.btn-primary { background: var(--green); color: #fff !important; }
.btn-primary:hover { background: var(--green-deep); text-decoration: none; transform: translateY(-1px); }
.btn-outline { border: 1.5px solid var(--green); color: var(--green) !important; background: transparent; }
.btn-outline:hover { background: var(--green-soft); text-decoration: none; }


/* ===== 卖点 ===== */
.why { padding: 40px 0; }
.why-h {
  font-size: 15px; font-weight: 600; letter-spacing: 3px; color: var(--ink);
  padding-bottom: 14px; border-bottom: 1px solid var(--border); margin-bottom: 26px;
  display: flex; align-items: center; gap: 14px;
}
.why-h::before { content: ""; width: 4px; height: 18px; background: var(--teal); border-radius: 2px; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px 36px; }
.why-i { display: flex; gap: 14px; align-items: flex-start; }
.tick {
  flex: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--green-soft); color: var(--green-deep); font-weight: 600;
  display: flex; align-items: center; justify-content: center; font-size: 14px; line-height: 1;
}
.why-i h4 { margin: 0; font-size: 15px; font-weight: 600; color: var(--ink); }
.why-i p { margin: 4px 0 0; font-size: 14px; color: var(--sub); line-height: 1.6; }

/* ===== 案例 ===== */
.cases { padding: 40px 0; }
.section-h {
  font-size: 20px; font-weight: 600; color: var(--ink);
  margin-bottom: 8px; display: flex; align-items: center; gap: 10px;
}
.section-h::before { content: ""; width: 4px; height: 18px; background: var(--teal); border-radius: 2px; flex: none; }
.section-sub { font-size: 15px; color: var(--sub); margin-bottom: 26px; }
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.case-card {
  background: var(--white); border: 1px solid var(--border); border-radius: 14px;
  overflow: hidden; transition: all .15s;
}
.case-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(14,138,125,0.10); }
.case-cover { width: 100%; height: 200px; object-fit: cover; display: block; background: var(--green-soft); }
.case-body { padding: 18px 20px 22px; }
.case-title { font-size: 17px; font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.case-type { font-size: 13px; color: var(--green-mid); margin-bottom: 10px; }
.case-desc { font-size: 14px; color: var(--sub); line-height: 1.65; margin-bottom: 12px; }
.case-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.case-tag {
  background: var(--green-soft); color: var(--green-mid); border-radius: 999px;
  padding: 2px 12px; font-size: 12px;
}

/* ===== CTA 区块 ===== */
.cta { padding: 56px 0 64px; text-align: center; }
.cta h2 { font-size: 26px; font-weight: 600; color: var(--ink); margin-bottom: 12px; }
.cta p { font-size: 14px; color: var(--sub); margin-bottom: 26px; }

/* ===== Footer ===== */
.site-footer { margin-top: 40px; padding: 44px 0 24px; background: var(--white);
  border-top: 1px solid var(--border); }
.foot-grid { display: grid; grid-template-columns: 2.2fr 1fr 1fr 1.2fr; gap: 32px; margin-bottom: 20px; }
.foot-col h5 {
  font-size: 12px; font-weight: 600; letter-spacing: 1px; color: var(--ink);
  margin: 0 0 12px; padding-left: 8px; border-left: 3px solid var(--green);
}
.foot-col .brand { font-size: 16px; font-weight: 600; color: var(--ink); letter-spacing: 1px; }
.foot-col .tagline { font-size: 12px; color: var(--green); margin-top: 4px; }
.foot-col .short { font-size: 12px; color: var(--green-mid); margin: 10px 0 14px; line-height: 1.5; }
.foot-col p { margin: 6px 0; font-size: 13px; color: var(--sub);
  display: flex; align-items: center; gap: 8px; }
.foot-col p svg { color: var(--green-mid); flex: none; }
.foot-col ul { list-style: none; padding: 0; margin: 0; }
.foot-col li { margin: 8px 0; }
.foot-col li a { color: var(--sub); font-size: 13px;
  display: inline-flex; align-items: center; gap: 7px; position: relative;
  transition: color .18s ease; }
.foot-col li a svg { color: var(--green-mid); flex: none; transition: color .18s ease; }
/* 动态效果（现代版）：下划线从左平滑滑入（scaleX 不占空间、零跳动）+ 文字/图标渐变变绿 */
.foot-col li a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 1.5px;
  background: var(--green); border-radius: 1px;
  transform: scaleX(0); transform-origin: left; transition: transform .25s ease;
}
.foot-col li a:hover { color: var(--green); text-decoration: none; }
.foot-col li a:hover svg { color: var(--green); }
.foot-col li a:hover::after { transform: scaleX(1); }
.foot-col li a:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; border-radius: 2px; }
.foot-std { padding: 14px 0; border-top: 1px solid var(--border);
  font-size: 12px; color: var(--sub); display: flex; align-items: center; gap: 8px; }
.foot-std svg { color: var(--green-mid); flex: none; }
.foot-legal { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border);
  font-size: 11px; color: var(--sub); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }
.foot-legal a { color: var(--sub); text-decoration: none; margin-right: 14px; }
/* ===== 法律/政策页面 ===== */
.legal-page { padding: 48px 0 64px; }
.legal-page h1 {
  font-size: 30px; font-weight: 700; color: var(--ink);
  margin-bottom: 6px; padding-bottom: 16px;
  border-bottom: 2px solid var(--green);
}
.legal-update { font-size: 13px; color: var(--sub); margin-bottom: 28px; }
.legal-page h2 {
  font-size: 18px; font-weight: 600; color: var(--green-deep);
  margin: 28px 0 12px; padding-left: 12px;
  border-left: 4px solid var(--teal);
}
.legal-page h3 {
  font-size: 15px; font-weight: 600; color: var(--ink);
  margin: 16px 0 8px;
}
.legal-page p { font-size: 14px; color: var(--ink); line-height: 1.8; margin-bottom: 10px; }
.legal-page ul, .legal-page ol { margin: 8px 0 12px 24px; }
.legal-page li { font-size: 14px; color: var(--ink); line-height: 1.8; margin-bottom: 6px; }
.legal-back { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--border); }

/* ===== 关于我们页面 ===== */
.about-page { padding: 0 0 64px; }
/* 关于页页头（2026-09-04 美化）：与 PageHero 同族渐变底 + 淡碳循环场景衬底，logo 居中为主角 */
.about-hero {
  text-align: center; padding: 46px 0 148px;
  position: relative; z-index: 0; overflow: hidden;
  background:
    radial-gradient(ellipse 700px 260px at 85% -30%, rgba(90,138,42,0.10), transparent 65%),
    linear-gradient(180deg, var(--green-pale) 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
}
.about-hero-scene { position: absolute; inset: 0; pointer-events: none; }
.about-hero-scene .eco-scene {
  opacity: 0.55;
  -webkit-mask-image:
    linear-gradient(to right, transparent 0%, #000 12%, #000 88%, transparent 100%),
    linear-gradient(to bottom, #000 45%, transparent 96%);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(to right, transparent 0%, #000 12%, #000 88%, transparent 100%),
    linear-gradient(to bottom, #000 45%, transparent 96%);
  mask-composite: intersect;
}
.ah-wrap { position: relative; z-index: 1; max-width: 1160px; margin: 0 auto; padding: 0 28px; }
.about-logo {
  display: block; width: min(240px, 62%); height: auto; margin: 0 auto 18px;
  filter: drop-shadow(0 4px 14px rgba(20, 60, 40, 0.12));
}
.about-hero h1 { font-size: 26px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.about-sub { font-size: 14px; color: var(--sub); }
.about-section { margin-top: 36px; }
.about-section h2 {
  font-size: 20px; font-weight: 600; color: var(--green-deep);
  margin-bottom: 16px; padding-left: 12px; border-left: 4px solid var(--teal);
}
.about-section p { font-size: 14px; color: var(--ink); line-height: 1.85; margin-bottom: 12px; }

/* 时间轴 */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ''; position: absolute; left: 8px; top: 6px; bottom: 6px;
  width: 2px; background: var(--border);
}
.timeline-item { position: relative; margin-bottom: 22px; }
.timeline-item::before {
  content: ''; position: absolute; left: -25px; top: 6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--teal); border: 2px solid #fff; box-shadow: 0 0 0 2px var(--teal);
}
.timeline-year {
  font-size: 15px; font-weight: 700; color: var(--teal); margin-bottom: 4px;
}
.timeline-content h4 { font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.timeline-content p { font-size: 13px; color: var(--sub); line-height: 1.6; margin: 0; }

/* 核心优势 */
.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.advantage-card {
  background: var(--white); border: 1px solid var(--border); border-radius: 12px;
  padding: 20px 16px; text-align: center; transition: all .15s;
}
.advantage-card:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(14,138,125,0.10); }
.advantage-icon { font-size: 32px; margin-bottom: 10px; }
.advantage-card h4 { font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.advantage-card p { font-size: 12.5px; color: var(--sub); line-height: 1.6; margin: 0; }

/* 联系表单 */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.3fr; gap: 28px; }
.contact-info {
  background: var(--green-soft); border-radius: 12px; padding: 24px;
}
.contact-info h4 { font-size: 16px; font-weight: 600; color: var(--green-deep); margin-bottom: 16px; }
.contact-info p { font-size: 14px; color: var(--ink); margin-bottom: 12px; line-height: 1.6; }
.contact-form {
  background: var(--white); border: 1px solid var(--border); border-radius: 12px; padding: 24px;
}
.contact-form h4 { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 13px; color: var(--ink); margin-bottom: 6px; font-weight: 500; }
.form-group input, .form-group textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; font-family: inherit; transition: border-color .15s;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(14,138,125,0.14);
}
.form-group textarea { resize: vertical; }
.form-tip { font-size: 12px; color: var(--sub); margin-top: 10px; }

/* ===== 案例详情页 ===== */
.case-detail { padding: 32px 0 64px; }
.breadcrumb { font-size: 13px; color: var(--sub); margin-bottom: 20px; }
.breadcrumb a { color: var(--green); }
.breadcrumb .current { color: var(--ink); }
.breadcrumb span { margin: 0 6px; }
.case-detail-cover {
  position: relative; border-radius: 14px; overflow: hidden; margin-bottom: 24px;
  background: var(--green-soft);
}
.case-detail-cover img { width: 100%; height: 320px; object-fit: cover; display: block; }
.case-detail-badge {
  position: absolute; top: 16px; right: 16px;
  background: var(--green); color: #fff; padding: 5px 14px;
  border-radius: 999px; font-size: 13px; font-weight: 500;
}
.case-detail-header { margin-bottom: 20px; }
.case-detail-header h1 { font-size: 28px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.case-detail-subtitle { font-size: 15px; color: var(--green-mid); margin-bottom: 12px; }
.case-detail-meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: 13px; color: var(--sub); }
.case-detail-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.case-detail-section { margin-bottom: 28px; }
.case-detail-section h2 {
  font-size: 18px; font-weight: 600; color: var(--green-deep);
  margin-bottom: 12px; padding-left: 12px; border-left: 4px solid var(--teal);
}
.case-detail-section p { font-size: 14px; color: var(--ink); line-height: 1.85; }
.highlight-list { list-style: none; padding: 0; }
.highlight-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; color: var(--ink); line-height: 1.7; margin-bottom: 8px;
}
.highlight-tick {
  flex: none; width: 20px; height: 20px; border-radius: 50%;
  background: var(--green-soft); color: var(--green-deep);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; margin-top: 2px;
}
.carbon-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.carbon-stat {
  background: var(--green-soft); border-radius: 10px; padding: 18px 12px; text-align: center;
}
.carbon-stat-num { font-size: 16px; font-weight: 700; color: var(--teal); margin-bottom: 4px; }
.carbon-stat-label { font-size: 12px; color: var(--sub); }
.case-detail-note { font-size: 13px; color: var(--sub); line-height: 1.7; }
.case-pager {
  display: flex; justify-content: space-between; gap: 16px;
  margin: 32px 0; padding-top: 20px; border-top: 1px solid var(--border);
}
.case-pager a {
  display: block; padding: 8px 0; max-width: 45%;
  transition: color .15s;
}
.case-pager a:hover { color: var(--green); text-decoration: none; }
.case-pager span { display: block; font-size: 12px; color: var(--sub); margin-bottom: 4px; }
.case-pager strong { font-size: 14px; color: var(--ink); }
.pager-next { text-align: right; margin-left: auto; }
.case-detail-cta {
  text-align: center; margin-top: 28px;
}
.case-detail-cta h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.case-detail-cta p { font-size: 14px; color: var(--sub); margin-bottom: 18px; }

/* ===== 合作伙伴 ===== */
.partners { padding: 40px 0; }
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.partner-item {
  background: var(--white); border: 1px solid var(--border); border-radius: 10px;
  padding: 22px 12px; text-align: center; font-size: 14px; font-weight: 500;
  color: var(--ink); transition: all .15s;
}
.partner-item:hover { border-color: var(--green); color: var(--green); transform: translateY(-2px); }

/* ===== 案例卡片链接增强 ===== */
.case-card { display: block; color: inherit; }
.case-card:hover { text-decoration: none; }
.case-more {
  margin-top: 12px; font-size: 13px; color: var(--green); font-weight: 500;
  opacity: 0; transform: translateX(-6px); transition: all .15s;
}
.case-card:hover .case-more { opacity: 1; transform: translateX(0); }

/* ===== 导航滚动效果 ===== */
.site-nav.scrolled {
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  background: rgba(255,255,255,0.98);
}

/* ===== 回到顶部按钮 ===== */
.back-to-top {
  position: fixed; right: 24px; bottom: 32px; z-index: 999;
  width: 44px; height: 44px; border-radius: 50%; border: none;
  background: var(--green); color: #fff; font-size: 20px; font-weight: 700;
  cursor: pointer; opacity: 0; visibility: hidden;
  transform: translateY(12px); transition: all .2s;
  box-shadow: 0 4px 14px rgba(59,109,17,0.3);
}
.back-to-top:hover { background: var(--green-deep); transform: translateY(-2px); }
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }

/* ===== 首页数据统计区 ===== */
.stats-bar {
  background: linear-gradient(180deg, #DFF0EB 0%, var(--teal-soft, #E4F3F0) 38%, var(--green-pale, #F6FAEC) 100%);
  padding: 32px 0 44px;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-item { text-align: center; padding: 8px; }
.stat-num {
  font-size: 36px; font-weight: 800; color: var(--teal-deep, #0A6B60);
  line-height: 1.1; letter-spacing: -1px; font-variant-numeric: tabular-nums;
}
.stat-suffix { font-size: 24px; color: var(--teal, #0E8A7D); margin-left: 2px; }
.stat-unit { font-size: 14px; color: #4A6B62; margin-left: 4px; font-weight: 500; }
.stat-label { font-size: 13px; color: #4A6B62; margin-top: 6px; letter-spacing: 1px; }

/* ===== 滚动入场动画 ===== */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
  will-change: opacity, transform;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== 语言切换按钮 ===== */
.lang-switch {
  background: transparent; border: 1px solid var(--border);
  color: var(--ink); padding: 5px 12px; border-radius: 8px;
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: all .15s; font-family: inherit;
}
.lang-switch:hover { border-color: var(--green); color: var(--green); background: var(--green-soft); }

/* ===== 面包屑导航 ===== */
.breadcrumb {
  padding: 14px 0; font-size: 13px; color: var(--sub);
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--sub); }
.breadcrumb a:hover { color: var(--green); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--ink); font-weight: 500; }

/* ===== 表单验证 ===== */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 500;
  color: var(--ink); margin-bottom: 6px;
}
.form-group label .req { color: #E53935; margin-left: 2px; }
.form-control {
  width: 100%; padding: 10px 14px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; font-family: inherit;
  background: var(--white); color: var(--ink); transition: border-color .15s;
}
.form-control:focus {
  outline: none; border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(14,138,125,0.14);
}
.form-control.invalid { border-color: #E53935; }
.form-error {
  font-size: 12px; color: #E53935; margin-top: 4px;
  display: none;
}
.form-error.show { display: block; }
.form-success {
  background: var(--green-soft); border: 1px solid var(--green);
  color: var(--green-deep); padding: 12px 16px; border-radius: 8px;
  font-size: 14px; margin-bottom: 16px; display: none;
}
.form-success.show { display: block; }
textarea.form-control { resize: vertical; min-height: 100px; }

/* ===== 合作伙伴无限滚动跑马灯 ===== */
.partners-marquee {
  overflow: hidden; position: relative;
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.marquee-track {
  display: flex; gap: 14px; width: max-content;
  animation: marquee 30s linear infinite;
}
.partners-marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item {
  flex: none; background: var(--white); border: 1px solid var(--border);
  border-radius: 10px; padding: 18px 28px; font-size: 14px; font-weight: 500;
  color: var(--ink); white-space: nowrap; transition: all .15s;
}
.marquee-item:hover { border-color: var(--green); color: var(--green); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== 通用页面 Hero ===== */
/* 统一内页页头（2026-09-04 融合版）：EcoHero 碳循环插画场景 + 浅绿渐变底 + 居中面包屑
   底部大留白让文字区与插画场景垂直错开（场景 absolute 贴底，环/森林不压标题） */
.page-hero {
  text-align: center; padding: 30px 0 128px;
  background:
    radial-gradient(ellipse 700px 260px at 85% -30%, rgba(90,138,42,0.10), transparent 65%),
    linear-gradient(180deg, var(--green-pale) 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
}
.page-hero .crumb {
  display: flex; justify-content: flex-start; align-items: center; flex-wrap: wrap;
  font-size: 13px; color: var(--sub); margin-bottom: 10px;
}
.page-hero .crumb a { color: var(--green); }
.page-hero .crumb .current { color: var(--ink); }
.page-hero .crumb .crumb-seg .sep { margin: 0 6px; }
.page-hero h1 { font-size: 30px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.page-hero p { font-size: 15px; color: var(--sub); max-width: 640px; margin-left: auto; margin-right: auto; }
.page-cta {
  text-align: center; padding: 28px 24px; margin-top: 32px;
  max-width: 560px; margin-left: auto; margin-right: auto;
  border-radius: 14px; position: relative; z-index: 0; overflow: hidden;
}
.page-cta h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.page-cta p { font-size: 14px; color: var(--sub); margin-bottom: 16px; }

/* ===== 产品能力页 ===== */
.features-page { padding: 24px 0 48px; }
.feature-block {
  background: linear-gradient(165deg, var(--white, #fff) 0%, #F2F9F7 55%, var(--teal-soft, #E4F3F0) 100%);
  border: 1px solid #D5EDE7; border-radius: 14px;
  padding: 24px 28px; margin-bottom: 20px;
}
.feature-header { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 16px; }
.feature-icon {
  flex: none; width: 48px; height: 48px; border-radius: 12px;
  background: var(--green-soft); display: flex; align-items: center;
  justify-content: center; font-size: 24px;
}
.feature-header h2 { font-size: 19px; font-weight: 600; color: var(--ink); margin: 0 0 4px; }
.feature-desc { font-size: 14px; color: var(--sub); margin: 0; }
.feature-details { list-style: none; padding: 0; margin: 0; }
.feature-details li {
  display: flex; gap: 10px; font-size: 14px; color: var(--ink);
  line-height: 1.7; margin-bottom: 8px; padding-left: 4px;
}
.feature-dot { color: var(--teal, #0E8A7D); font-size: 8px; margin-top: 7px; flex: none; }
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tech-item {
  background: var(--teal-soft, #E4F3F0); border-radius: 10px; padding: 14px 16px;
}
.tech-label { font-size: 12px; color: #4A6B62; margin-bottom: 4px; }
.tech-value { font-size: 14px; font-weight: 600; color: var(--teal-deep, #0A6B60); }

/* ===== 功能页科技感层 v4（2026-09-01 · 配色=logo青 #0E8A7D · 用户反馈：格子+青色弧与低碳主题不符→换 EcoHero 绿色场景（风车/草丘/漂浮叶，见 src/components/EcoHero.astro）；呼吸灯/流光边框闪太快→放慢） ===== */
/* hero 装饰改由 EcoHero 组件提供，此处仅保留层叠上下文 */
.page-hero { position: relative; z-index: 0; overflow: hidden; }

/* 功能卡：静态顶部高光线 + 悬停触发一次性光泽扫过 + 悬停亮环（无常驻动画，不晃眼） */
.feature-block {
  position: relative; overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.feature-block::before {
  content: ""; position: absolute; top: 0; left: 8%; right: 8%; height: 1px; pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(14, 138, 125, .38), transparent);
}
.feature-block::after {
  content: ""; position: absolute; top: -12%; bottom: -12%; left: -80%; width: 52%;
  transform: skewX(-18deg); pointer-events: none; opacity: 0;
  background: linear-gradient(105deg, transparent, rgba(14, 138, 125, .09) 42%, rgba(255, 255, 255, .6) 50%, rgba(14, 138, 125, .09) 58%, transparent);
}
.feature-block:hover::after { animation: cardShine 1.8s ease-out forwards; }
@keyframes cardShine {
  from { left: -80%; opacity: 1; }
  to   { left: 145%; opacity: 1; }
}
.feature-block:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 38px rgba(14, 138, 125, .16), inset 0 0 0 1px rgba(14, 138, 125, .15);
  border-color: #8FD4C4;
}

/* 平台保障数据卡：渐变底 + 数值前呼吸灯带波纹扩散（纯 CSS，逐卡错拍） */
.tech-item {
  background: linear-gradient(150deg, #F0F9F7 0%, var(--teal-soft, #E4F3F0) 100%);
  position: relative; overflow: hidden;
}
.tech-value { display: flex; align-items: center; gap: 7px; }
.tech-value::before {
  content: ""; flex: none; width: 7px; height: 7px; border-radius: 50%;
  background: var(--teal, #0E8A7D);
  animation: techPulse 5s ease-in-out infinite;
}
.tech-item:nth-child(2) .tech-value::before { animation-delay: 1s; }
.tech-item:nth-child(3) .tech-value::before { animation-delay: 2s; }
@keyframes techPulse {
  0%, 100% { opacity: .35; transform: scale(.85); box-shadow: 0 0 0 0 rgba(14, 138, 125, .30); }
  50% { opacity: 1; transform: scale(1.1); box-shadow: 0 0 0 7px rgba(14, 138, 125, 0); }
}

/* CTA 卡：青→绿旋转流光边框（conic 光带绕卡巡航）+ 底部辉光 */
.page-cta::before {
  content: ""; position: absolute; left: 50%; top: 50%; z-index: -2;
  width: 150%; aspect-ratio: 1; translate: -50% -50%; pointer-events: none;
  background: conic-gradient(
    from 0deg,
    transparent 0deg, rgba(14, 138, 125, .65) 36deg, transparent 72deg,
    transparent 178deg, rgba(59, 109, 17, .45) 214deg, transparent 250deg);
  animation: ctaSpin 11s linear infinite;
}
@keyframes ctaSpin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}
.page-cta::after {
  content: ""; position: absolute; inset: 1.5px; z-index: -1; border-radius: 12.5px; pointer-events: none;
  background:
    radial-gradient(ellipse 85% 130% at 50% 128%, rgba(14, 138, 125, .16), transparent 70%),
    linear-gradient(160deg, #F2FAF8 0%, var(--teal-soft, #E4F3F0) 55%, var(--green-soft, #EAF3DE) 100%);
}

@media (prefers-reduced-motion: reduce) {
  .tech-value::before, .page-cta::before { animation: none; }
  .feature-block:hover { transform: none; }
  .feature-block:hover::after { animation: none; }
}

/* ===== FAQ 页面 ===== */
.faq-page { padding: 24px 0 48px; }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--white); border: 1px solid var(--border); border-radius: 12px;
  margin-bottom: 12px; overflow: hidden; transition: border-color .15s;
}
.faq-item[open] { border-color: var(--green); }
.faq-item summary {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px; cursor: pointer; list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-num {
  flex: none; font-size: 14px; font-weight: 700; color: var(--green);
  background: var(--green-soft); width: 32px; height: 32px;
  border-radius: 8px; display: flex; align-items: center; justify-content: center;
}
.faq-q { flex: 1; font-size: 15px; font-weight: 600; color: var(--ink); }
.faq-arrow {
  flex: none; font-size: 20px; color: var(--sub); transition: transform .2s;
}
.faq-item[open] .faq-arrow { transform: rotate(45deg); color: var(--green); }
.faq-a {
  padding: 0 20px 18px 66px; font-size: 14px; color: var(--ink); line-height: 1.8;
}

/* ===== 404 页面 ===== */
/* 404 页样式已内聚到 src/pages/404.astro（2026-09-04 美化版，复用 page-hero/EcoHero 体系） */

/* ===== 案例详情新增模块 ===== */
.pain-list { list-style: none; padding: 0; margin: 0; }
.pain-list li {
  display: flex; gap: 10px; font-size: 14px; color: var(--ink);
  line-height: 1.7; margin-bottom: 10px; padding: 10px 14px;
  background: #FFF8E1; border-radius: 8px; border-left: 3px solid var(--amber);
}
.pain-icon { flex: none; font-size: 16px; }
.solution-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.solution-item {
  display: flex; gap: 12px; background: var(--green-pale);
  border-radius: 10px; padding: 14px 16px; align-items: flex-start;
}
.solution-num {
  flex: none; font-size: 18px; font-weight: 800; color: var(--green);
  opacity: 0.5; line-height: 1;
}
.solution-text { font-size: 14px; color: var(--ink); line-height: 1.6; }
.process-box {
  background: var(--green-soft); border-radius: 10px; padding: 18px 22px;
  border-left: 4px solid var(--green);
}
.process-box p { margin: 0; font-size: 14px; color: var(--ink); line-height: 1.8; }
.reduction-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.reduction-card {
  background: var(--white); border: 1px solid var(--border); border-radius: 10px;
  padding: 18px 14px; text-align: center;
}
.reduction-card.highlight {
  background: var(--green); border-color: var(--green);
}
.reduction-card.highlight .reduction-num,
.reduction-card.highlight .reduction-label { color: #fff; }
.reduction-num { font-size: 16px; font-weight: 700; color: var(--green-deep); margin-bottom: 4px; }
.reduction-label { font-size: 12px; color: var(--sub); }
/* 平台产出实录 · 时间维度块 */
.po-timedim { border: 1px solid var(--line, #e5ead9); border-radius: 10px; padding: 14px 16px; background: #fbfcf7; }
.po-td-intro { font-size: 13px; color: var(--sub); line-height: 1.7; margin-bottom: 10px; }
.po-td-peaks { list-style: none; margin: 0 0 8px; padding: 0; display: grid; gap: 6px; }
.po-td-peaks li { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.po-td-peaks .po-name { min-width: 64px; font-weight: 700; color: var(--green-deep); }
.po-td-peaks .po-td-detail { color: var(--ink, #333); }
.po-td-foot { font-size: 12px; color: var(--sub); margin: 0; }
/* 时间维度 · 资源月度强度折线图（Plotly，里站同款内核） */
.po-td-plot-wrap { margin: 0 0 12px; }
.po-td-plot-title { font-size: 13px; font-weight: 700; color: var(--ink); margin: 0 0 8px; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.po-td-plot-title small { font-size: 11px; font-weight: 400; color: var(--sub); }
.po-td-plot { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 8px 6px; box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05); }
/* ===== 平台产出实录（案例详情） ===== */
.po-intro { font-size: 14px; color: var(--sub); line-height: 1.8; margin-bottom: 14px; }
.po-stats { margin-bottom: 16px; }
.po-scope { display: grid; gap: 12px; margin-bottom: 14px; }
.po-scope-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: 13px; color: var(--ink); margin-bottom: 5px; }
.po-scope-head strong { color: var(--green-deep); font-variant-numeric: tabular-nums; white-space: nowrap; }
.po-scope-bar { height: 10px; border-radius: 999px; background: var(--green-pale); border: 1px solid var(--border); overflow: hidden; }
.po-scope-bar span { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--green-mid), var(--green)); }
.po-loadindex {
  background: var(--teal-soft); border: 1px solid var(--teal-border); border-radius: 10px;
  padding: 10px 14px; font-size: 13px; color: var(--teal-deep); line-height: 1.7; margin-bottom: 16px;
}
/* 减排优先级分析原理（帕累托 + 四象限 PCA 配图） */
.po-principle-item { margin-top: 14px; }

/* ---- PCA 降维动态演示（默认折叠条，点击展开不打断图表阅读） ---- */
.pca-demo { padding: 2px 0 0; }
.pca-toggle { display: flex; align-items: center; gap: 8px; width: 100%; text-align: left; background: var(--green-pale, #f6faec); border: 1px dashed var(--border, #e3edd5); border-radius: 10px; color: var(--green-deep, #27500a); font-size: 13px; font-weight: 600; padding: 10px 14px; cursor: pointer; transition: background 0.15s ease; }
.pca-toggle:hover { background: var(--green-soft, #eaf3de); }
.pca-toggle-ic { font-size: 10px; flex: none; width: 12px; text-align: center; }
.pca-demo-body { margin-top: 10px; }
.pca-demo-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.pca-demo-head p { margin: 0; font-size: 12.5px; color: var(--sub, #6b7280); line-height: 1.5; }
.pca-btn { flex: none; border: 1px solid #cfd8cc; background: #f6f8f4; color: var(--green-deep, #2d5a27); font-size: 12.5px; font-weight: 600; padding: 6px 14px; border-radius: 999px; cursor: pointer; transition: background 0.15s ease; }
.pca-btn:hover { background: #ecf2e7; }
#pca-svg { display: block; width: 100%; height: auto; }
.pca-demo-caption { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 8px; min-height: 22px; }
.pca-step { font-size: 13px; color: var(--ink, #1f2937); font-weight: 600; }
.pca-var { font-size: 12.5px; font-weight: 700; color: #c05621; font-variant-numeric: tabular-nums; white-space: nowrap; }
@media (max-width: 720px) {
  .pca-demo-caption { flex-direction: column; align-items: flex-start; gap: 4px; }
}
.po-principle-item h4 { font-size: 13px; color: var(--ink); margin-bottom: 6px; }
.po-principle-text { font-size: 13px; color: var(--sub); line-height: 1.75; margin-bottom: 10px; }
.po-plotly-chart {
  background: #FBFDF9; border: 1px solid var(--line, #E5E9E2); border-radius: 10px;
  padding: 8px 6px; min-height: 300px;
}
.po-block { margin-bottom: 16px; }
.po-block h3 { font-size: 14px; color: var(--ink); margin-bottom: 8px; }
/* 排放 TOP5 + PCA TOP5 双栏 */
.po-dual { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 720px) { .po-dual { grid-template-columns: 1fr; } }
.po-pca-intro { font-size: 12px; color: var(--sub); line-height: 1.7; margin: 0 0 8px; }
/* PCA 碳负荷排名表（平台同款：名称/象限/类别/进度条评分） */
.po-pca-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.po-pca-table th, .po-pca-table td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.po-pca-table th { font-size: 12px; color: var(--sub); font-weight: 600; white-space: nowrap; }
.po-pca-table td:first-child { font-weight: 500; color: var(--ink); }
.po-pca-scorecol { width: 42%; }
.po-quad { display: inline-block; font-size: 11px; color: #9a3412; background: #FEF0E6; border: 1px solid #F5D5BC; border-radius: 999px; padding: 1px 8px; white-space: nowrap; }
.po-bar-row { display: flex; align-items: center; gap: 10px; }
.po-bar-track { flex: 1; height: 10px; background: #F1EDE4; border-radius: 5px; overflow: hidden; min-width: 60px; }
.po-bar { display: block; height: 100%; background: #D2622A; border-radius: 5px; }
.po-bar-score { font-size: 12px; font-weight: 700; color: var(--ink); min-width: 34px; text-align: right; font-variant-numeric: tabular-nums; }
.po-score { font-size: 11px; font-weight: 700; color: var(--green-deep); background: var(--green-soft); border-radius: 999px; padding: 2px 8px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.po-basis { font-size: 11px; font-weight: 600; color: var(--teal-deep, #0f766e); background: var(--teal-soft, #f0fdfa); border-radius: 999px; padding: 2px 8px; white-space: nowrap; }
.po-cli { font-weight: 700; color: var(--ink, #1f2937); font-variant-numeric: tabular-nums; white-space: nowrap; min-width: 3em; text-align: right; }
/* 碳负荷指数横向小柱：满分 100，条长即分值比例；琥珀警示色（高负荷=需优先替代，绿色语义相反） */
.po-cli-cell { display: flex; align-items: center; gap: 10px; }
.po-cli-track { flex: 1; min-width: 140px; height: 8px; border-radius: 999px; background: #f1e8d8; overflow: hidden; }
.po-cli-fill { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, #e8b04a, #c2410c); }
.po-top { list-style: none; display: grid; gap: 6px; }
.po-top li { display: flex; align-items: center; gap: 10px; background: var(--green-pale); border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; font-size: 13px; }
.po-rank { width: 22px; height: 22px; border-radius: 50%; background: var(--green); color: #fff; font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex: none; }
.po-name { flex: 1; color: var(--ink); min-width: 0; }
.po-top strong { color: var(--green-deep); font-variant-numeric: tabular-nums; white-space: nowrap; }
.po-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; background: #fff; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.po-table th, .po-table td { padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.po-table th { background: var(--green-soft); color: var(--green-deep); font-size: 12px; }
.po-table tr:last-child td { border-bottom: none; }
.po-note { font-size: 12px; color: var(--sub); line-height: 1.7; }
.po-dq-note { font-size: 12px; color: var(--sub); line-height: 1.7; margin-top: 10px; }
/* AI 五维评估区块 */
.po-ev-dims { list-style: none; display: grid; gap: 6px; margin: 0 0 12px; padding: 0; }
.po-ev-dims li { display: flex; align-items: center; gap: 10px; font-size: 13px; background: var(--green-pale); border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; }
.po-ev-dims .po-name { flex: 1; color: var(--ink); }
.po-level { display: inline-block; font-size: 11px; color: #fff; border-radius: 999px; padding: 2px 10px; white-space: nowrap; flex: none; }
.po-ev-label { font-size: 13px; font-weight: 700; color: var(--ink); margin: 10px 0 6px; }
.po-ev-conclusion { background: var(--green-pale); border-left: 4px solid var(--green); border-radius: 8px; padding: 10px 14px; font-size: 13px; line-height: 1.7; color: var(--ink); }
.po-ev-actions { margin: 0; padding-left: 20px; font-size: 13px; line-height: 1.8; color: var(--ink); }
@media (max-width: 720px) {
  .po-table th:nth-child(3), .po-table td:nth-child(3) { white-space: nowrap; }
}
.client-review {
  position: relative; background: var(--green-pale); border-radius: 12px;
  padding: 24px 28px 20px;
}
.quote-mark {
  position: absolute; top: 8px; left: 16px; font-size: 48px;
  color: var(--green); opacity: 0.2; font-family: Georgia, serif; line-height: 1;
}
.client-review p {
  font-size: 15px; color: var(--ink); line-height: 1.8;
  font-style: italic; padding-left: 24px; margin: 0;
}

/* ===== 响应式补充 ===== */
@media (max-width: 860px) {
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .carbon-stats { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .case-pager { flex-direction: column; }
  .case-pager a { max-width: 100%; }
  .pager-next { text-align: left; margin-left: 0; }
  .case-detail-cover img { height: 200px; }
  .about-hero { padding: 36px 0 118px; }
  .about-hero h1 { font-size: 24px; }
  .about-logo { width: min(200px, 66%); }
  .solution-grid { grid-template-columns: 1fr; }
  .reduction-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .feature-block { padding: 18px 16px; }
  .faq-a { padding-left: 20px; }
  .back-to-top { right: 16px; bottom: 20px; width: 40px; height: 40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px 12px; }
  .stat-num { font-size: 28px; }
  .lang-switch { padding: 4px 8px; font-size: 12px; }
}

/* ============================================================
   导航覆盖层（正式版整改，覆盖同事版导航样式——scroll-spy 指示线 /
   skip-link / 滚动阴影 / 移动端下拉菜单，2026-08-26）
   ============================================================ */
/* ===== 顶部导航（主流营销站：当前页高亮 + 移动端折叠）===== */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand { font-size: 18px; font-weight: 600; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.nav-brand .logo-img { width: 28px; height: 28px; border-radius: 6px; display: inline-block; }
.nav-brand .logo-full { height: 34px; width: auto; display: inline-block; }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--ink); font-size: 15px; font-weight: 500; position: relative; }
.nav-links a:hover { color: var(--green); text-decoration: none; }
/* 当前页高亮：主色文字 + 底部 2px 指示线（贴齐 header 底边框，基线统一）*/
.nav-links a.active { color: var(--green); font-weight: 600; }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -15px;
  height: 2px; border-radius: 2px; background: var(--green);
}
.nav-links a:focus-visible { outline: 2px solid var(--teal); outline-offset: 4px; border-radius: 2px; }
/* 滚动阴影：sticky 顶栏与内容分离（滚过浅绿区块时增强层次）*/
.site-nav.scrolled { box-shadow: 0 2px 12px rgba(23, 52, 4, 0.06); }
/* skip-link：键盘用户跳到主内容（WCAG 2.4.1），默认隐藏、聚焦时可见 */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--green); color: #fff; padding: 10px 18px;
  border-radius: 0 0 8px 0; font-size: 14px;
}
.skip-link:focus { left: 0; color: #fff; text-decoration: none; }
.nav-cta {
  background: var(--green); color: #fff !important; padding: 8px 20px;
  border-radius: 8px; font-weight: 500;
}
.nav-cta:hover { background: var(--green-deep); text-decoration: none; }
/* 移动端 hamburger */
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; padding: 10px; background: transparent;
  border: 1px solid var(--border); border-radius: 8px; cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; width: 18px; background: var(--ink); border-radius: 2px; transition: transform .2s, opacity .2s; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-mobile {
  display: none; flex-direction: column; gap: 4px;
  padding: 10px 24px 18px; background: var(--white);
  border-top: 1px solid var(--border);
}
.nav-mobile.open { display: flex; }
.nav-mobile a { padding: 12px 4px; font-size: 15px; font-weight: 500; color: var(--ink); border-bottom: 1px solid var(--border); }
.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a.active { color: var(--green); font-weight: 600; }
.nav-mobile-cta {
  margin-top: 8px; background: var(--green); color: #fff !important;
  text-align: center; border-radius: 8px; border-bottom: none !important;
}

/* 移动端断点（正式版 768，覆盖同事版抽屉式导航） */
@media (max-width: 768px) {
  .why-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .headline { font-size: 32px; }
  /* 导航：折叠为 hamburger */
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  /* 移动端下拉菜单：汉堡点击展开（绝对定位在 header 下方，覆盖遮罩之上；此前 CSS 误写 .nav-mobile 且 HTML 无该元素导致点不出内容） */
  .nav-links.open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; padding: 6px 24px 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(23,52,4,.10);
    z-index: 101;
  }
  .nav-links.open a { padding: 13px 4px; font-size: 16px; border-bottom: 1px solid var(--border); }
  .nav-links.open a:hover { text-decoration: none; color: var(--green); }
  .nav-links.open a.active { border-bottom: 1px solid var(--border); }
  .nav-links.open a.nav-cta { margin-top: 10px; text-align: center; border-bottom: none; }
  .nav-links.open .lang-switch { align-self: flex-start; margin-top: 10px; }
  /* footer：4 列 → 单列堆叠，列间留节奏 */
  .foot-grid { grid-template-columns: 1fr; gap: 0; }
  .foot-col { padding-top: 24px; }
  .foot-col:first-child { padding-top: 0; }
}

/* ===== 工作流程模块（响应式卡片流程，替代静态 SVG） ===== */
.how { background: var(--green-soft, #EAF3DE); padding: 44px 0; }
.how .section-h, .how .section-sub { text-align: center; }
.how-flow { max-width: 900px; margin: 0 auto; }
.flow { display: flex; align-items: flex-start; justify-content: center; }
.flow-step { flex: 1; min-width: 0; text-align: center; padding: 0 6px; }
.flow-node {
  width: 60px; height: 60px; margin: 0 auto 14px; border-radius: 50%;
  background: linear-gradient(135deg, #3B6D11, #5A8A2A);
  color: #fff; display: flex; align-items: center; justify-content: center;
  position: relative; box-shadow: 0 4px 14px rgba(59,109,17,.20);
}
.flow-num {
  position: absolute; top: -5px; right: -5px; width: 22px; height: 22px;
  border-radius: 50%; background: #fff; color: var(--teal);
  font-size: 12px; font-weight: 700; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid rgba(14,138,125,0.18);
}
.flow-step h4 { margin: 0 0 4px; font-size: 16px; font-weight: 600; color: var(--ink); }
.flow-step p { margin: 0 0 8px; font-size: 14px; color: var(--sub); }
.flow-tag { display: inline-block; padding: 3px 12px; border-radius: 20px; background: #fff; color: var(--teal); font-size: 12px; font-weight: 500; border: 1px solid rgba(14,138,125,0.25); }
.flow-arrow { flex: none; width: 44px; display: flex; align-items: flex-start; justify-content: center; padding-top: 22px; color: var(--teal); }
.flow-note { text-align: center; margin: 28px 0 0; font-size: 13px; color: #6B7B5E; }
@media (max-width: 768px) {
  .how { padding: 32px 0; }
  .how-flow { max-width: 100%; }
  .flow { flex-direction: column; align-items: center; gap: 24px; }
  .flow-step { width: 100%; max-width: 280px; padding: 0; }
  /* 手机端精简：去 tag（次级信息冗余）、去箭头（竖排顺序天然）、节点缩小 */
  .flow-arrow { display: none; }
  .flow-tag { display: none; }
  .flow-node { width: 52px; height: 52px; margin: 0 auto 10px; }
  .flow-step h4 { font-size: 17px; margin: 0 0 4px; }
  .flow-step p { font-size: 14px; margin: 0; }
  /* 底部 16 字注脚：限定宽度与竖排卡片对齐、居中，字号缩小，不再满宽铺开撑起页面宽度 */
  .flow-note { max-width: 280px; margin: 20px auto 0; font-size: 12px; line-height: 1.7; }
}

/* ===== 案例详情页 · 绿地白卡（用户要求 2026-08-26：长内容白卡托底更易读，覆盖同事版裸铺样式）===== */
.case-detail-section {
  background: #FFFFFF;
  border: 1px solid #E3EAD9;
  border-radius: 14px;
  padding: 20px 24px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(23, 52, 4, .06);
}
.case-detail-section h2 { margin-top: 0; }
/* 用户要求 2026-08-26：底部 CTA 去掉白卡（不用突出），融入页面 */
.case-detail-cta {
  text-align: center;
  margin-top: 28px;
}
.case-detail-cta .btn { display: inline-flex; align-items: center; gap: 6px; }


/* ===== 首页底部 CTA 卡垫 + 双按钮（用户要求 2026-08-26：未注册可咨询；入口突出）===== */
.cta-card {
  background: linear-gradient(160deg, var(--teal-soft, #E4F3F0) 0%, var(--green-soft, #EAF3DE) 100%);
  border: 1px solid var(--teal-border, #CBE7E1);
  border-radius: 14px;
  padding: 28px 24px;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
  box-shadow: 0 1px 6px rgba(14, 138, 125, .06);
}
.cta-card h2 { color: var(--ink); margin-bottom: 10px; }
.cta-card .cta-sub { color: var(--sub); font-size: 14px; margin-bottom: 18px; }
.cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.cta-actions .btn { display: inline-flex; align-items: center; gap: 6px; }

/* ============================================================
   TECH UPGRADE LAYER（2026-08-28 · 深空绿科技感升级）
   预算红线：纯 CSS 动画（transform/opacity/background-position）
   零新 JS / 零图片；装饰层 pointer-events:none；LCP=h1 不受损
   ============================================================ */

/* ---- L1 · Hero 深空化：深绿黑渐变 + 网格 + 双辉光 ---- */
.hero {
  background:
    radial-gradient(ellipse 900px 420px at 78% -10%, rgba(90,138,42,0.28), transparent 62%),
    radial-gradient(ellipse 700px 380px at 8% 112%, rgba(59,109,17,0.22), transparent 60%),
    linear-gradient(178deg, #0A1408 0%, #0E1B0A 55%, #1A2E10 86%, var(--green-pale) 118%);
  color: #EAF3DE;
  padding: 88px 0 72px;
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(157,195,139,0.5), transparent);
}
/* 透视网格：两层 linear-gradient 画线，40s 缓移（GPU 合成，不重排） */
/* 碳原子蜂窝晶格：六边形 = 碳环结构意象，直接呼应"碳"主题（替代军事感的方格雷达网） */
.hero-grid {
  position: absolute; inset: 0; pointer-events: none; overflow: hidden;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='48' viewBox='0 0 28 48'%3E%3Cg fill='none' stroke='%239DC38B' stroke-opacity='0.09' stroke-width='1'%3E%3Cpath d='M14 0L28 8v16L14 32L0 24V8z'/%3E%3Cpath d='M0 24l14 8v16M28 24l-14 8'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 28px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.95), rgba(0,0,0,0.5) 60%, transparent 92%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.95), rgba(0,0,0,0.5) 60%, transparent 92%);
  animation: heroHexDrift 48s linear infinite;
}
/* 左右漂移：位移=晶格横向周期（28px）整数倍，无缝循环；48s 极缓，与天际线反向成视差 */
@keyframes heroHexDrift { to { background-position: 56px 0; } }
/* 建筑天际线剪影：底部楼群轮廓（"建筑"主题意象），微弱边缘光 */
.hero-skyline {
  position: absolute; left: 0; right: 0; bottom: 0; height: 150px;
  pointer-events: none; opacity: 0.85;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='150' viewBox='0 0 1200 150' preserveAspectRatio='xMidYMax slice'%3E%3Cdefs%3E %3ClinearGradient id='gl' x1='0' y1='0' x2='1' y2='0'%3E %3Cstop offset='0' stop-color='%2314B8A6'/%3E%3Cstop offset='1' stop-color='%233B6D11'/%3E %3C/linearGradient%3E %3ClinearGradient id='fd' x1='0' y1='0' x2='0' y2='1'%3E %3Cstop offset='0' stop-color='%23FFF' stop-opacity='0'/%3E%3Cstop offset='0.45' stop-color='%23FFF' stop-opacity='0.35'/%3E%3Cstop offset='1' stop-color='%23FFF' stop-opacity='1'/%3E %3C/linearGradient%3E %3Cmask id='m'%3E%3Crect x='0' y='40' width='1200' height='110' fill='url(%23fd)'/%3E%3C/mask%3E %3C/defs%3E %3Crect x='0' y='40' width='1200' height='110' fill='url(%23gl)' fill-opacity='0.22' mask='url(%23m)'/%3E %3Cg fill='%2324524A' fill-opacity='0.55'%3E %3Crect x='58' y='88' width='55' height='62'/%3E %3Crect x='250' y='98' width='45' height='52'/%3E %3Crect x='322' y='110' width='56' height='40'/%3E %3Cpath d='M322 110 A28 28 0 0 1 378 110 Z'/%3E %3Crect x='702' y='88' width='66' height='62'/%3E %3Crect x='716' y='66' width='38' height='22'/%3E %3Crect x='982' y='100' width='88' height='50'/%3E %3C/g%3E %3Cg fill='%2310261F'%3E %3Crect x='0' y='70' width='80' height='80'/%3E %3Crect x='80' y='95' width='60' height='55'/%3E %3Crect x='140' y='40' width='75' height='110'/%3E %3Crect x='155' y='26' width='45' height='14'/%3E %3Cpolygon points='215,150 215,85 268,62 268,150'/%3E %3Crect x='290' y='75' width='55' height='75'/%3E %3Crect x='360' y='105' width='80' height='45'/%3E %3Cpath d='M360 105 A40 40 0 0 1 440 105 Z'/%3E %3Crect x='470' y='30' width='70' height='120'/%3E %3Crect x='555' y='80' width='60' height='70'/%3E %3Crect x='722' y='95' width='75' height='55'/%3E %3Crect x='734' y='72' width='51' height='23'/%3E %3Crect x='746' y='52' width='27' height='20'/%3E %3Crect x='812' y='60' width='70' height='90'/%3E %3Crect x='895' y='90' width='55' height='60'/%3E %3Crect x='960' y='35' width='60' height='115'/%3E %3Crect x='1032' y='85' width='58' height='65'/%3E %3Crect x='1092' y='55' width='108' height='95'/%3E %3C/g%3E %3Cg%3E %3Crect x='470' y='28' width='70' height='3' fill='url(%23gl)' fill-opacity='0.8'/%3E %3Crect x='502' y='8' width='4' height='10' fill='%2314B8A6' fill-opacity='0.85'/%3E %3C/g%3E %3Cg fill='%230E8A7D' fill-opacity='0.75'%3E %3Crect x='640' y='45' width='4' height='105'/%3E %3Crect x='616' y='42' width='98' height='3'/%3E %3Crect x='608' y='45' width='10' height='7'/%3E %3Crect x='706' y='45' width='2' height='26'/%3E %3Crect x='701' y='71' width='12' height='7'/%3E %3C/g%3E %3Cg fill='%237CBF4E' fill-opacity='0.35'%3E %3Crect x='232' y='92' width='5' height='4'/%3E %3Crect x='378' y='118' width='6' height='4'/%3E%3Crect x='396' y='118' width='6' height='4'/%3E %3Crect x='488' y='44' width='6' height='4'/%3E%3Crect x='504' y='44' width='6' height='4'/%3E%3Crect x='488' y='58' width='6' height='4'/%3E%3Crect x='504' y='58' width='6' height='4'/%3E%3Crect x='488' y='72' width='6' height='4'/%3E%3Crect x='504' y='72' width='6' height='4'/%3E %3Crect x='752' y='60' width='5' height='4'/%3E %3Crect x='1048' y='96' width='5' height='4'/%3E%3Crect x='1064' y='96' width='5' height='4'/%3E %3Crect x='1110' y='68' width='6' height='4'/%3E%3Crect x='1126' y='68' width='6' height='4'/%3E%3Crect x='1142' y='68' width='6' height='4'/%3E%3Crect x='1110' y='82' width='6' height='4'/%3E%3Crect x='1158' y='82' width='6' height='4'/%3E %3C/g%3E %3Cg fill='%2314B8A6' fill-opacity='0.45'%3E %3Crect x='170' y='54' width='6' height='4'/%3E%3Crect x='186' y='54' width='6' height='4'/%3E%3Crect x='170' y='66' width='6' height='4'/%3E%3Crect x='186' y='66' width='6' height='4'/%3E%3Crect x='170' y='78' width='6' height='4'/%3E %3Crect x='304' y='88' width='6' height='4'/%3E%3Crect x='320' y='88' width='6' height='4'/%3E %3Crect x='570' y='92' width='6' height='4'/%3E%3Crect x='586' y='92' width='6' height='4'/%3E %3Crect x='976' y='48' width='6' height='4'/%3E%3Crect x='992' y='48' width='6' height='4'/%3E%3Crect x='976' y='62' width='6' height='4'/%3E %3C/g%3E %3Cg fill='%230E8A7D' fill-opacity='0.5'%3E %3Crect x='828' y='74' width='4' height='58'/%3E%3Crect x='844' y='74' width='4' height='58'/%3E%3Crect x='860' y='74' width='4' height='58'/%3E %3C/g%3E%3C/svg%3E") left bottom / auto 100% repeat-x;
  animation: heroSkylinePan 90s linear infinite;
}
/* 天际线横向平移：向左缓移 1200px（=SVG 原生宽，无缝循环）；90s 一轮，慢到近乎察觉不到但确实是活的 */
@keyframes heroSkylinePan { from { background-position-x: 0; } to { background-position-x: -1200px; } }
/* 辉光呼吸（低频，仅 opacity） */
.hero-glow {
  position: absolute; border-radius: 50%; pointer-events: none;
  filter: blur(70px); opacity: .5;
  animation: heroBreath 9s ease-in-out infinite alternate;
}
.hero-glow.g1 { top: -140px; right: -60px; width: 460px; height: 460px; background: rgba(120,175,60,0.30); }
.hero-glow.g2 { bottom: -180px; left: -100px; width: 380px; height: 380px; background: rgba(45,90,20,0.35); animation-delay: -4.5s; }
@keyframes heroBreath { from { opacity: .32; transform: scale(.96); } to { opacity: .58; transform: scale(1.05); } }

/* Hero 文字体系：深底反白 + 渐变标题 */
.hero .eyebrow {
  color: #9DC38B; border: 1px solid rgba(157,195,139,0.35); border-radius: 999px;
  padding: 5px 14px; background: rgba(157,195,139,0.08);
  letter-spacing: 3.5px;
}
.hero .eyebrow .live-dot { background: #7CBF4E; box-shadow: 0 0 8px rgba(124,191,78,0.9); }
.hero .headline {
  color: #F4FAEC; font-size: 50px; font-weight: 700; letter-spacing: -1px;
  text-shadow: 0 2px 24px rgba(0,0,0,0.35);
}
.hero .headline em {
  font-style: normal;
  background: linear-gradient(92deg, #A8D97C 8%, #5FA832 55%, #C9E8A8 95%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero .subline { color: rgba(234,243,222,0.72); font-size: 17px; }
/* CTA：主按钮霓虹发光 + hover 抬升；副按钮幽灵反白 */
.hero .btn-primary {
  background: linear-gradient(135deg, #4C8618, #3B6D11);
  box-shadow: 0 0 0 1px rgba(168,217,124,0.35), 0 4px 22px rgba(90,150,35,0.45);
}
.hero .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(168,217,124,0.6), 0 8px 30px rgba(90,150,35,0.6); }
.hero .btn-outline { color: #F7FBF0 !important; border-color: rgba(234,243,222,0.55); background: rgba(255,255,255,0.14); backdrop-filter: blur(4px); }
.hero .btn-outline:hover { border-color: #A8D97C; color: #DCFFB8 !important; background: rgba(255,255,255,0.2); }
.hero .btn { transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
/* ---- L2 · 全站卡片 HUD：四角标 + 顶部渐变亮线 + hover 抬升 ---- */
.why-i, .case-card, .flow-node, .feature-block, .faq-item {
  position: relative;
  transition: border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}
.why-i::before, .case-card::before, .flow-node::before {
  content: ""; position: absolute; top: 0; left: 12px; right: 12px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, transparent, rgba(59,109,17,0.55), transparent);
  opacity: .55; transition: opacity .22s ease;
}
.why-i:hover, .case-card:hover, .flow-node:hover, .feature-block:hover {
  border-color: #8CC4B8 !important;
  box-shadow: 0 10px 28px rgba(14,138,125,0.14) !important;
}
.why-i:hover::before, .case-card:hover::before, .flow-node:hover::before { opacity: 1; left: 6px; right: 6px; }

/* ---- L3 · 细节统一 ---- */
/* 全站等宽数字（统计/表格/代码） */
body { font-variant-numeric: tabular-nums; }
/* 滚动条品牌化（WebKit） */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--green-pale); }
::-webkit-scrollbar-thumb { background: #B7D8D0; border-radius: 8px; border: 2px solid var(--green-pale); }
::-webkit-scrollbar-thumb:hover { background: #7BBBAD; }
/* 选区品牌色 */
::selection { background: rgba(14,138,125,0.22); }
/* section 标题：竖 accent bar */
.section-h, .why-h {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; letter-spacing: .5px;
}
.section-h::before, .why-h::before {
  content: ""; width: 4px; height: 20px; border-radius: 2px;
  background: linear-gradient(180deg, #14A08F, #0E8A7D);
}
/* 主按钮统一微发光 */
.btn-primary { box-shadow: 0 3px 14px rgba(59,109,17,0.28); transition: transform .18s ease, box-shadow .18s ease; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(59,109,17,0.4); }

/* ---- L4 · 尊重系统减弱动效偏好 ---- */
@media (prefers-reduced-motion: reduce) {
  .hero-grid, .hero-glow, .live-dot, .hero-skyline { animation: none !important; }
  .hero-skyline { opacity: 0.5; }
  .hero { background-attachment: scroll; }
}
/* ---- 移动端：网格密度与辉光收缩（过绘预算） ---- */
@media (max-width: 720px) {
  .hero { padding: 64px 0 56px; }
  .hero .headline { font-size: 34px; }
  .hero-grid { background-size: 28px 48px; }
  .hero-glow { filter: blur(48px); }
  .hero-skyline { height: 90px; opacity: 0.7; }
}
/* ---- END TECH UPGRADE ---- */

/* ============================================================
   案例详情页 v2 · 专业展示面改版（2026-09-04）
   结构：深空绿 Hero（KPI 前置）→ 锚点子导航 → 背景 → 挑战×方案
   → 核算方法流水线 → 实测产出（自动编号）→ 成果与价值 → 双按钮 CTA
   ============================================================ */

/* 锚点落点补偿（顶部导航 + 子导航高度；锚点点击已由全局脚本动态计算） */
.case-detail-section[id], .cd-po { scroll-margin-top: 124px; }

/* ---- ① 深空绿 Hero ---- */
.cd-hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse 900px 420px at 78% -10%, rgba(90,138,42,0.28), transparent 62%),
    radial-gradient(ellipse 700px 380px at 8% 112%, rgba(59,109,17,0.22), transparent 60%),
    linear-gradient(178deg, #0A1408 0%, #0E1B0A 55%, #1A2E10 92%);
  color: #EAF3DE;
}
/* 碳原子蜂窝晶格（与首页 hero 同款意象，仅更浅一层） */
.cd-hero-grid {
  position: absolute; inset: 0; pointer-events: none; overflow: hidden;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='48' viewBox='0 0 28 48'%3E%3Cg fill='none' stroke='%239DC38B' stroke-opacity='0.08' stroke-width='1'%3E%3Cpath d='M14 0L28 8v16L14 32L0 24V8z'/%3E%3Cpath d='M0 24l14 8v16M28 24l-14 8'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 28px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.95), rgba(0,0,0,0.4) 60%, transparent 92%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.95), rgba(0,0,0,0.4) 60%, transparent 92%);
}
.cd-hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.22fr 0.78fr;
  gap: 36px; align-items: center;
  padding-top: 44px; padding-bottom: 44px;
}
.cd-hero-top { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.cd-status {
  background: rgba(124,191,78,0.16); color: #A8D97C;
  border: 1px solid rgba(124,191,78,0.42); border-radius: 999px;
  padding: 4px 14px; font-size: 13px; font-weight: 600;
}
.cd-type { color: rgba(234,243,222,0.72); font-size: 13px; letter-spacing: 1px; }
.cd-hero h1 {
  font-size: 34px; font-weight: 700; color: #F4FAEC;
  letter-spacing: -0.5px; margin-bottom: 8px;
  text-shadow: 0 2px 24px rgba(0,0,0,0.35);
}
.cd-hero-sub { font-size: 15px; color: rgba(234,243,222,0.72); margin-bottom: 14px; }
.cd-hero-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 13px; color: rgba(234,243,222,0.66); margin-bottom: 12px; }
.cd-hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.cd-hero-meta svg { color: #9DC38B; flex: none; }
.cd-hero-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.cd-hero-tag {
  background: rgba(255,255,255,0.07); border: 1px solid rgba(157,195,139,0.26);
  color: rgba(234,243,222,0.78); border-radius: 999px;
  padding: 2px 12px; font-size: 12px;
}
.cd-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 22px; }
.cd-kpi {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(157,195,139,0.24);
  border-radius: 12px; padding: 14px 12px;
}
.cd-kpi-num { font-size: 19px; font-weight: 700; color: #C9E8A8; line-height: 1.3; letter-spacing: -0.3px; }
.cd-kpi-label { font-size: 12px; color: rgba(234,243,222,0.6); margin-top: 4px; }
.cd-hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.cd-hero .btn-primary {
  background: linear-gradient(135deg, #4C8618, #3B6D11);
  box-shadow: 0 0 0 1px rgba(168,217,124,0.35), 0 4px 22px rgba(90,150,35,0.45);
}
.cd-hero .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(168,217,124,0.6), 0 8px 30px rgba(90,150,35,0.6); }
.cd-btn-ghost {
  border: 1.5px solid rgba(234,243,222,0.5); color: #F7FBF0 !important;
  background: rgba(255,255,255,0.1); backdrop-filter: blur(4px);
}
.cd-btn-ghost:hover { border-color: #A8D97C; color: #DCFFB8 !important; background: rgba(255,255,255,0.16); text-decoration: none; }
.cd-hero-visual img {
  width: 100%; max-height: 320px; object-fit: cover; display: block;
  border-radius: 14px; border: 1px solid rgba(157,195,139,0.3);
  box-shadow: 0 18px 50px rgba(0,0,0,0.45);
}

/* ---- ② 锚点子导航（top 由页面脚本按导航实际高度设定，62px 为 JS 未跑时的兜底） ---- */
.cd-subnav {
  position: sticky; top: 62px; z-index: 90;
  background: rgba(255,255,255,0.97); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.cd-subnav .container { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.cd-subnav .container::-webkit-scrollbar { display: none; }
.cd-subnav a {
  padding: 12px 14px; font-size: 14px; font-weight: 500;
  color: var(--sub); white-space: nowrap; position: relative;
}
.cd-subnav a:hover { color: var(--green); text-decoration: none; }
.cd-subnav a.active { color: var(--green); font-weight: 600; }
.cd-subnav a.active::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 0;
  height: 2px; border-radius: 2px; background: var(--green);
}

/* ---- ③ 项目背景：客户诉求 callout ---- */
.cd-client-callout {
  margin-top: 14px; background: var(--teal-soft);
  border: 1px solid var(--teal-border); border-radius: 10px;
  padding: 12px 16px;
}
.cd-client-callout p { margin: 0; }
.cd-client-label {
  display: block; font-size: 11.5px; font-weight: 700; letter-spacing: 1px;
  color: var(--teal-deep); margin-bottom: 4px;
}

/* ---- ④ 挑战 × 方案 成对对照 ---- */
.cd-pair {
  display: grid; grid-template-columns: 1fr 34px 1fr;
  gap: 10px; align-items: stretch; margin-bottom: 10px;
}
.cd-pair:last-child { margin-bottom: 0; }
.cd-pain {
  background: #FFF8E1; border-left: 3px solid var(--amber);
  border-radius: 10px; padding: 12px 14px;
}
.cd-sol {
  background: var(--green-pale); border-left: 3px solid var(--green);
  border-radius: 10px; padding: 12px 14px;
}
.cd-pain p, .cd-sol p { margin: 0; font-size: 13.5px; line-height: 1.65; color: var(--ink); }
.cd-p-tag, .cd-s-tag {
  display: block; font-size: 11px; font-weight: 700; letter-spacing: 2px; margin-bottom: 4px;
}
.cd-p-tag { color: #9A6B00; }
.cd-s-tag { color: var(--green-mid); }
.cd-pair-arrow { display: flex; align-items: center; justify-content: center; color: var(--teal); }

/* ---- ⑤ 核算方法流水线 + 标准口径 ---- */
.cd-method-flow { display: flex; align-items: stretch; margin: 6px 0 18px; }
.cd-mstep { flex: 1; min-width: 0; text-align: center; position: relative; padding: 0 10px; }
.cd-mstep:not(:last-child)::after {
  content: ""; position: absolute; right: -9px; top: 17px;
  border-left: 10px solid #C9D8B8; border-top: 7px solid transparent; border-bottom: 7px solid transparent;
}
.cd-mstep-node {
  width: 44px; height: 44px; margin: 0 auto 8px; border-radius: 50%;
  background: linear-gradient(135deg, #3B6D11, #5A8A2A); color: #fff;
  font-size: 16px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(59,109,17,0.22);
}
.cd-mstep-name { font-size: 14px; font-weight: 600; color: var(--ink); }
.cd-mstep-desc { font-size: 12px; color: var(--sub); line-height: 1.5; margin-top: 3px; }
.cd-std-chips { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 14px; }

/* ---- 输入数据示例（案例 1，details 折叠，脱敏示意表） ---- */
.cd-dsample { margin-top: 18px; border: 1px dashed var(--border); border-radius: 10px; background: var(--green-pale); }
.cd-dsample summary { display: flex; align-items: center; gap: 8px; padding: 10px 14px; cursor: pointer; font-size: 13px; font-weight: 600; color: var(--green-deep); list-style: none; }
.cd-dsample summary::-webkit-details-marker { display: none; }
.cd-dsample summary:hover { background: var(--green-soft); border-radius: 10px; }
.cd-dsample-ic { font-size: 10px; flex: none; width: 12px; text-align: center; transition: transform 0.15s ease; }
.cd-dsample[open] .cd-dsample-ic { transform: rotate(90deg); }
.cd-dsample-body { padding: 2px 14px 14px; border-top: 1px solid var(--border); }
.cd-dsample-note { font-size: 12px; color: var(--sub); line-height: 1.7; margin: 10px 0; }
.cd-dsample-note b { color: var(--ink); }
.cd-dsample-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 16px; margin-top: 4px; }
.cd-dsample-title { font-size: 12.5px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.cd-dsample-tab { width: 100%; border-collapse: collapse; font-size: 12px; background: var(--white); border: 1px solid var(--border); }
.cd-dsample-tab th { background: var(--green-soft); color: var(--ink); font-weight: 600; text-align: left; }
.cd-dsample-tab th, .cd-dsample-tab td { padding: 6px 9px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.cd-dsample-tab td { color: var(--sub); }
.cd-dsample-tab .num { text-align: right; font-variant-numeric: tabular-nums; }
.cd-dsample-tab tbody tr:last-child td { border-bottom: none; }
.cd-gantt-wrap { overflow-x: auto; }
.cd-gantt td { height: 26px; }
.cd-gantt th:not(:nth-child(1)):not(:nth-child(2)), .cd-gantt td:not(:nth-child(1)):not(:nth-child(2)) { text-align: center; min-width: 44px; }
.cd-gantt .bar { background: linear-gradient(180deg, #7ba348, #6FA23C); box-shadow: inset 0 0 0 1px rgba(23, 52, 4, 0.12); }
@media (max-width: 720px) {
  .cd-dsample-grid { grid-template-columns: 1fr; }
}
.cd-std-label { font-size: 12px; font-weight: 700; color: var(--sub); letter-spacing: 1px; margin-right: 2px; }
.cd-std-chip {
  background: var(--teal-soft); color: var(--teal-deep);
  border: 1px solid var(--teal-border); border-radius: 999px;
  padding: 4px 14px; font-size: 12px; font-weight: 500;
}

/* ---- ⑥ 实测产出：信任徽章 + 自动编号 ---- */
.cd-trust-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11.5px; font-weight: 500; color: var(--teal-deep);
  background: var(--teal-soft); border: 1px solid var(--teal-border);
  border-radius: 999px; padding: 3px 10px;
  vertical-align: 3px; margin-left: 10px; letter-spacing: 0.5px;
}
.cd-po .po-block h3 { display: flex; align-items: center; }
.po-num {
  display: inline-flex; align-items: center; justify-content: center;
  flex: none; width: 24px; height: 24px; border-radius: 7px;
  background: var(--green-soft); color: var(--green-deep);
  font-size: 12px; font-weight: 700; margin-right: 9px;
}
.po-mini-label { font-size: 12px; font-weight: 600; color: var(--sub); margin-bottom: 8px; }

/* ---- ⑦ 成果与价值 ---- */
.cd-ach-grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px;
}
.cd-ach-grid li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--ink); line-height: 1.7; }
.cd-hl-wrap { margin-top: 18px; }
.cd-hl-label { font-size: 13px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.cd-hl-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.cd-hl-card {
  background: var(--green-pale); border: 1px solid var(--border); border-left: 3px solid var(--teal);
  border-radius: 10px; padding: 12px 14px;
  font-size: 13px; line-height: 1.6; color: var(--ink);
}

/* ---- 响应式 ---- */
@media (max-width: 860px) {
  .cd-hero-inner { grid-template-columns: 1fr; gap: 24px; padding-top: 32px; padding-bottom: 32px; }
  .cd-hero h1 { font-size: 26px; }
  .cd-kpis { grid-template-columns: repeat(2, 1fr); }
  .cd-kpi-num { font-size: 17px; }
  .cd-pair { grid-template-columns: 1fr; gap: 6px; }
  .cd-pair-arrow { transform: rotate(90deg); padding: 2px 0; }
  .cd-method-flow { flex-direction: column; gap: 14px; margin-bottom: 14px; }
  .cd-mstep { display: flex; align-items: flex-start; gap: 12px; text-align: left; padding: 0; }
  .cd-mstep-node { margin: 0; flex: none; }
  .cd-mstep-text { padding-top: 2px; }
  .cd-mstep:not(:last-child)::after {
    right: auto; left: 21px; top: auto; bottom: -16px;
    border-left: 7px solid transparent; border-right: 7px solid transparent;
    border-top: 10px solid #C9D8B8; border-bottom: none;
  }
  .cd-ach-grid { grid-template-columns: 1fr; }
  .cd-hl-row { grid-template-columns: 1fr; }
  .cd-hero-visual img { max-height: 200px; }
  .case-detail-section[id], .cd-po { scroll-margin-top: 112px; }
}
@media (prefers-reduced-motion: reduce) {
  .cd-hero-grid { animation: none; }
}

/* ============================================================
   案例陈列页 /cases + 首页「更多」链接（2026-09-04）
   ============================================================ */

/* 首页案例区头部：标题左 · 全部案例右 */
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 16px; margin-bottom: 26px;
}
.section-head .section-sub { margin-bottom: 0; }
.section-more {
  flex: none; display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 500; color: var(--green);
  padding: 6px 4px; white-space: nowrap;
}
.section-more span { transition: transform .15s; }
.section-more:hover { color: var(--green-deep); text-decoration: none; }
.section-more:hover span { transform: translateX(3px); }
@media (max-width: 560px) {
  .section-head { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* 陈列页主体（页头已并入全站统一 PageHero） */
.cl-list { padding: 36px 0 48px; }
.cl-list .cta-card { margin-top: 40px; }

/* 卡片封面状态角标（陈列页） */
.case-cover-wrap { position: relative; }
.case-cover-wrap .case-cover { border-radius: 0; }
.case-status-chip {
  position: absolute; top: 12px; right: 12px;
  background: rgba(23,52,4,0.55); color: #F0F7E4;
  border: 1px solid rgba(240,247,228,0.35);
  border-radius: 999px; padding: 3px 12px;
  font-size: 12px; font-weight: 500;
  backdrop-filter: blur(4px);
}