/* ============================================================
   yichang_design_gorge · 宜昌 · 高峡平湖
   主色 #1D6FA3 峡江平湖蓝 / 辅色 #3E8E5A 三峡松绿
   图形母题：坝体横纹线 + 泄洪闸孔方阵 + 水波弧线
   ============================================================ */
:root {
  --brand: #1D6FA3;
  --brand-deep: #14507A;
  --brand-soft: #6FA8CE;
  --accent: #3E8E5A;
  --accent-deep: #2B6640;
  --bg: #F2F6F8;
  --surface: #FFFFFF;
  --surface-cool: #E5EEF4;
  --text: #1F2830;
  --text-soft: #4E5B66;
  --text-faint: #7E8B95;
  --line: #D8E3EA;
  --radius: 12px;
  --radius-sm: 7px;
  --shadow: 0 10px 30px rgba(31, 40, 48, .09);
  --shadow-lift: 0 18px 44px rgba(29, 111, 163, .22);
  --header-h: 72px;
}

/* ---------- base ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; transition: color .25s; }
a:hover { color: var(--brand-deep); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.skip-link { position: absolute; left: -9999px; top: 0; }
.skip-link:focus { left: 8px; top: 8px; background: var(--brand); color: #fff; padding: 6px 12px; border-radius: 6px; z-index: 999; }

h1, h2, h3 { line-height: 1.35; color: var(--text); }
.section { padding: 76px 0; }
.section--cool { background: var(--surface-cool); }
.section-head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.section-head .kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: 4px; color: var(--brand);
  text-transform: uppercase; margin-bottom: 12px;
}
.section-head .kicker::before, .section-head .kicker::after {
  content: ""; width: 20px; height: 8px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='8' viewBox='0 0 20 8'%3E%3Cpath d='M1 5 Q5 1 10 4 T19 3' stroke='%231D6FA3' stroke-width='1.4' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat;
}
.section-head h2 { font-size: 30px; margin-bottom: 10px; }
.section-head p { color: var(--text-soft); }

/* ---------- 按钮（光斑滑过 + 箭头位移） ---------- */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px; border-radius: var(--radius-sm); border: 1.5px solid transparent;
  font-size: 15px; font-weight: 600; cursor: pointer; overflow: hidden;
  transition: transform .25s, box-shadow .25s, background .25s, color .25s, border-color .25s;
}
.btn::after {  /* 光斑 */
  content: ""; position: absolute; top: 0; left: -80%; width: 50%; height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255,255,255,.35), transparent);
  transform: skewX(-20deg); transition: left .55s ease;
}
.btn:hover::after { left: 130%; }
.btn .arr { display: inline-block; transition: transform .25s; }
.btn:hover .arr { transform: translateX(4px); }
.btn--primary { background: linear-gradient(135deg, var(--brand), var(--brand-deep)); color: #fff; box-shadow: 0 8px 20px rgba(29,111,163,.32); }
.btn--primary:hover { transform: translateY(-2px); color: #fff; box-shadow: 0 12px 26px rgba(29,111,163,.42); }
.btn--accent { background: linear-gradient(135deg, var(--accent), var(--accent-deep)); color: #fff; }
.btn--accent:hover { transform: translateY(-2px); color: #fff; }
.btn--ghost { border-color: rgba(255,255,255,.7); color: #fff; background: rgba(255,255,255,.06); }
.btn--ghost:hover { background: rgba(255,255,255,.16); color: #fff; transform: translateY(-2px); }
.btn--outline { border-color: var(--brand); color: var(--brand); background: transparent; }
.btn--outline:hover { background: var(--brand); color: #fff; transform: translateY(-2px); }
.btn--light { background: #fff; color: var(--brand-deep); }
.btn--light:hover { transform: translateY(-2px); color: var(--brand); box-shadow: 0 12px 26px rgba(0,0,0,.18); }

/* ---------- header / nav ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(242,246,248,.93); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 700; color: var(--text); }
.brand:hover { color: var(--brand); }
.brand__mark { display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--radius-sm); background: var(--surface-cool); border: 1px solid var(--line); }
.main-nav { display: flex; align-items: center; gap: 22px; }
.nav-list { display: flex; align-items: center; gap: 4px; }
.nav-list > li { display: flex; align-items: center; }
.nav-link {
  position: relative; display: inline-flex; align-items: center; gap: 5px;
  padding: 10px 14px; font-size: 15px; color: var(--text-soft);
  text-decoration: none; border-radius: 7px; transition: color .25s, background .25s;
}
.nav-link:hover { color: var(--brand); background: rgba(29,111,163,.08); }
.nav-link.is-active { color: var(--brand); font-weight: 600; }
.nav-link.is-active::before {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px; height: 4px; border-radius: 2px; background: var(--brand);
}
.nav-link.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 7px; transform: translateX(-50%);
  width: 4px; height: 4px; border-radius: 50%; background: var(--accent);
}
.nav-caret { width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 5px solid currentColor; opacity: .6; transition: transform .25s; }
.nav-item--drop { position: relative; }
.nav-item--drop:hover .nav-caret { transform: rotate(180deg); }
.nav-panel {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 176px;
  background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--brand);
  border-radius: var(--radius-sm); box-shadow: var(--shadow); padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .25s, transform .25s, visibility .25s;
}
.nav-item--drop:hover .nav-panel, .nav-item--drop:focus-within .nav-panel { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-panel a { display: block; padding: 9px 14px; font-size: 14px; color: var(--text-soft); border-radius: 5px; text-decoration: none; }
.nav-panel a:hover { background: var(--surface-cool); color: var(--brand); }
.nav-phone { display: inline-flex; align-items: center; gap: 7px; font-size: 15px; font-weight: 700; color: var(--brand); text-decoration: none; }
.nav-phone:hover { color: var(--brand-deep); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); cursor: pointer; padding: 8px; }
.dam-divider { line-height: 0; pointer-events: none; }

/* ---------- hero（变体B：左文右坝体水波图形） ---------- */
.hero {
  position: relative; overflow: hidden; min-height: 640px;
  display: flex; align-items: center; padding: 90px 0 120px;
  background:
    radial-gradient(880px 420px at 88% 6%, rgba(62,142,90,.22), transparent 60%),
    linear-gradient(155deg, var(--brand-deep) 0%, var(--brand) 58%, #2A89BE 100%);
  color: #fff;
}
.hero__art { position: absolute; right: -30px; top: 50%; transform: translateY(-50%); width: min(44%, 520px); pointer-events: none; }
.hero__art svg { width: 100%; height: auto; display: block; }
.hero__art .gate { animation: gateBreath 4.5s ease-in-out infinite; }
.hero__art .gate:nth-of-type(2n) { animation-delay: -1.5s; }
.hero__art .gate:nth-of-type(3n) { animation-delay: -3s; }
@keyframes gateBreath { 0%,100% { opacity: .55; } 50% { opacity: 1; } }
.hero__art .flowline { animation: flowDrift 7s ease-in-out infinite; }
.hero__art .flowline2 { animation: flowDrift 9s ease-in-out infinite reverse; }
@keyframes flowDrift { 0%,100% { transform: translateX(0); } 50% { transform: translateX(-18px); } }
.hero .container { position: relative; z-index: 2; max-width: 1220px; }
.hero__tag { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; letter-spacing: 3px; color: #BFDDF0; margin-bottom: 18px; }
.hero__tag::before { content: ""; width: 26px; height: 2px; background: var(--accent); }
.hero__slides { display:grid; position: relative; min-height: 200px; max-width: 600px; }
.hero__slide { grid-area:1/1; opacity: 0; transform: translateY(14px); transition: opacity .8s ease, transform .8s ease; pointer-events: none; }
.hero__slide.is-on { opacity: 1; transform: translateY(0); pointer-events: auto; }
.hero__slide h1 { font-size: 40px; color: #fff; margin-bottom: 14px; }
.hero__slide h1 em { font-style: normal; color: #A8E0C2; }
.hero__slide p { color: rgba(255,255,255,.82); margin-bottom: 26px; max-width: 520px; }
.hero__dots { display: flex; gap: 10px; margin-top: 22px; }
.hero__dots button { width: 30px; height: 8px; border: none; border-radius: 4px; background: rgba(255,255,255,.28); cursor: pointer; transition: background .3s; }
.hero__dots button.is-on { background: #A8E0C2; }
.no-js .hero__slide { position: relative; opacity: 1; transform: none; pointer-events: auto; margin-bottom: 18px; }
.no-js .hero__dots { display: none; }

/* ---------- 信任条（变体C：数字+图标横条） ---------- */
.trust { margin-top: -56px; position: relative; z-index: 5; }
.trust__band {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--surface); border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: var(--shadow); overflow: hidden;
}
.trust__item {
  display: flex; align-items: center; gap: 16px; padding: 30px 28px;
  border-left: 1px solid var(--line); transition: background .3s, transform .3s;
}
.trust__item:first-child { border-left: none; }
.trust__item:hover { background: var(--surface-cool); transform: translateY(-3px); }
.trust__icon { display: grid; place-items: center; width: 52px; height: 52px; border-radius: var(--radius-sm); background: rgba(29,111,163,.1); flex: none; }
.trust__num { font-size: 30px; font-weight: 800; color: var(--brand); line-height: 1.15; font-variant-numeric: tabular-nums; }
.trust__label { font-size: 13px; color: var(--text-soft); }

/* ---------- 业务卡（变体A：4 列卡，水位线 + 坝纹角标） ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.biz-card {
  position: relative; display: flex; flex-direction: column; gap: 14px;
  padding: 32px 26px 28px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  transition: transform .32s, box-shadow .32s, border-color .32s;
}
.biz-card::before { /* 顶部水位线 */
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 5px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  background-size: 200% 100%;
  transition: background-position .6s ease;
}
.biz-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lift); border-color: rgba(29,111,163,.4); }
.biz-card:hover::before { background-position: 100% 0; }
.biz-card::after { /* 坝纹角标 */
  content: ""; position: absolute; right: -14px; bottom: -10px; width: 110px; height: 70px; opacity: .4;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='110' height='70' viewBox='0 0 110 70'%3E%3Cpath d='M6 18h44M6 34h44M6 50h44M70 10v10M90 10v10M70 30v10M90 30v10M70 50v10M90 50v10' stroke='%23D8E3EA' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat;
  transition: opacity .3s;
}
.biz-card:hover::after { opacity: .9; }
.biz-card__icon { display: grid; place-items: center; width: 60px; height: 60px; border-radius: var(--radius-sm); background: linear-gradient(135deg, rgba(29,111,163,.12), rgba(62,142,90,.12)); transition: transform .35s; }
.biz-card:hover .biz-card__icon { transform: scale(1.1) rotate(-5deg); }
.biz-card h3 { font-size: 19px; }
.biz-card p { font-size: 14px; color: var(--text-soft); flex: 1; }
.biz-card__link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--brand); }
.biz-card__link .arr { transition: transform .25s; }
.biz-card__link:hover .arr { transform: translateX(4px); }
.biz-card__chips { display: flex; flex-wrap: wrap; gap: 6px; }
.biz-card__chips a { font-size: 12px; color: var(--text-faint); background: var(--surface-cool); padding: 3px 10px; border-radius: 999px; }
.biz-card__chips a:hover { color: var(--brand); background: rgba(29,111,163,.12); }

/* ---------- 流程（变体A：4 步横排水流虚线 + 呼吸脉冲） ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; position: relative; }
.steps::before {
  content: ""; position: absolute; top: 27px; left: 9%; right: 9%; height: 2px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='2' viewBox='0 0 400 2'%3E%3Cpath d='M2 1 Q100 0 200 1 T400 1' stroke='%236FA8CE' stroke-width='2' stroke-dasharray='14 10' stroke-linecap='round' fill='none'/%3E%3C/svg%3E") center/cover repeat-x;
  opacity: .8;
}
.step { text-align: center; padding: 0 8px; }
.step__node {
  position: relative; z-index: 1; display: grid; place-items: center;
  width: 54px; height: 54px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--surface); border: 2px solid var(--brand-soft); color: var(--brand);
  font-weight: 800; font-size: 17px;
  animation: nodeBreath 3.2s ease-in-out infinite;
  transition: transform .3s, box-shadow .3s;
}
.step:nth-child(2) .step__node { animation-delay: .6s; }
.step:nth-child(3) .step__node { animation-delay: 1.2s; }
.step:nth-child(4) .step__node { animation-delay: 1.8s; }
.step:hover .step__node { animation-play-state: paused; transform: scale(1.15); box-shadow: 0 0 0 8px rgba(111,168,206,.2); }
@keyframes nodeBreath { 0%,100% { box-shadow: 0 0 0 0 rgba(111,168,206,.4); } 50% { box-shadow: 0 0 0 10px rgba(111,168,206,0); } }
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-soft); }

/* ---------- 资讯（变体E：横向滑动卡） ---------- */
.news-rail { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 0; }
.news-card {
  display: flex; flex-direction: column; gap: 10px;
  padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  border-left: 4px solid var(--accent);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); border-left-color: var(--brand); }
.news-card__meta { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--text-faint); }
.news-card__meta .cat { color: var(--brand); background: rgba(29,111,163,.1); padding: 2px 10px; border-radius: 999px; font-weight: 600; }
.news-card h3 { font-size: 16px; line-height: 1.5; }
.news-card h3 a { color: var(--text); }
.news-card h3 a:hover { color: var(--brand); }
.news-card p { font-size: 13px; color: var(--text-soft); flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
/* ---------- CTA ---------- */
.cta { border-radius: var(--radius); padding: 46px 44px; position: relative; overflow: hidden; color: #fff; background: linear-gradient(120deg, var(--brand-deep), var(--brand) 60%, #2A89BE 130%); }
.cta__inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.cta h2 { color: #fff; font-size: 26px; margin-bottom: 8px; }
.cta p { color: rgba(255,255,255,.78); }
.cta__gates { position: absolute; right: -10px; bottom: -8px; width: 220px; opacity: .2; pointer-events: none; }
.cta--proof { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cta__proof { display: flex; align-items: center; gap: 12px; padding: 18px 22px; border-radius: var(--radius-sm); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s; }
.cta__proof:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); }
.cta__proof b { font-size: 24px; color: var(--brand); }
.cta__proof span { font-size: 13px; color: var(--text-soft); }

/* ---------- page-hero（深色区：面包屑必须浅色） ---------- */
.page-hero {
  position: relative; padding: 64px 0 56px; overflow: hidden; color: #fff;
  background:
    radial-gradient(700px 300px at 88% 0%, rgba(62,142,90,.26), transparent 60%),
    linear-gradient(150deg, var(--brand-deep), var(--brand) 70%, #234E68);
}
.page-hero h1 { color: #fff; font-size: 32px; margin-bottom: 8px; }
.page-hero .lead { color: rgba(255,255,255,.72); max-width: 760px; }
.page-hero .breadcrumb, .breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,.68); margin-bottom: 18px; }
.page-hero .breadcrumb a { color: rgba(255,255,255,.78); text-decoration: none; }
.page-hero .breadcrumb a:hover { color: #fff; }
.page-hero .breadcrumb span { color: rgba(255,255,255,.45); }
.page-hero__gates { position: absolute; right: -30px; bottom: -30px; width: 340px; opacity: .18; pointer-events: none; }

/* ---------- 列表 / 详情通用 ---------- */
.layout { display: grid; grid-template-columns: 1fr 320px; gap: 36px; padding: 56px 0 80px; }
.article-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.article-card { display: flex; flex-direction: column; gap: 10px; padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); transition: transform .3s, box-shadow .3s, border-color .3s; }
.article-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); border-color: rgba(29,111,163,.4); }
.article-card h3 { font-size: 17px; }
.article-card h3 a { color: var(--text); }
.article-card h3 a:hover { color: var(--brand); }
.article-card p { font-size: 14px; color: var(--text-soft); flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-card__meta { display: flex; gap: 14px; font-size: 12px; color: var(--text-faint); }
.article-card__meta a { color: var(--brand); }
.list-header { margin-bottom: 26px; }
.list-header h1 { font-size: 28px; margin-bottom: 6px; }
.list-header p { color: var(--text-soft); font-size: 14px; }

.pagination { display: flex; gap: 8px; margin-top: 34px; flex-wrap: wrap; }
.pagination a, .pagination span { display: inline-grid; place-items: center; min-width: 38px; height: 38px; padding: 0 12px; border-radius: 7px; border: 1px solid var(--line); background: var(--surface); color: var(--text-soft); font-size: 14px; }
.pagination .is-cur { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 700; }
.pagination a:hover { border-color: var(--brand); color: var(--brand); }

/* 侧栏 */
.side-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; margin-bottom: 22px; }
.side-card h3 { font-size: 16px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid rgba(29,111,163,.25); display: flex; align-items: center; gap: 8px; }
.side-card ul li a { display: block; padding: 8px 0; font-size: 14px; color: var(--text-soft); border-bottom: 1px dashed var(--line); }
.side-card ul li a:hover, .side-card ul li a.is-cur { color: var(--brand); font-weight: 600; }
.side-cta { background: linear-gradient(140deg, var(--brand), var(--brand-deep)); color: #fff; border: none; }
.side-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,.2); }
.side-cta p { font-size: 13px; color: rgba(255,255,255,.72); margin-bottom: 16px; }
.side-cta .tel { display: block; font-size: 20px; font-weight: 800; color: #BFE3D2; margin-bottom: 16px; }

/* 详情页 */
.detail { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 40px; }
.detail h1 { font-size: 28px; margin-bottom: 14px; }
.detail__meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: 13px; color: var(--text-faint); padding-bottom: 18px; border-bottom: 1px solid var(--line); margin-bottom: 26px; }
.detail__content { font-size: 16px; color: var(--text-soft); }
.detail__content h2, .detail__content h3 { margin: 24px 0 12px; color: var(--text); }
.detail__content p { margin-bottom: 14px; }
.detail__content img { border-radius: 10px; margin: 18px 0; }
.detail__content ul, .detail__content ol { padding-left: 22px; margin-bottom: 14px; }
.detail__content ul li, .detail__content ol li { list-style: inherit; }
.detail__nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 34px; }
.detail__nav a { padding: 16px 18px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; color: var(--text-soft); background: var(--surface); transition: border-color .25s, color .25s; }
.detail__nav a:hover { border-color: var(--brand); color: var(--brand); }
.detail__nav b { display: block; font-size: 12px; color: var(--text-faint); margin-bottom: 4px; font-weight: 400; }
.detail__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.detail__tags a { font-size: 12px; padding: 4px 12px; border-radius: 999px; background: var(--surface-cool); color: var(--text-soft); }
.detail__tags a:hover { color: var(--brand); background: rgba(29,111,163,.12); }
.related li { display: flex; justify-content: space-between; gap: 12px; }
.related li span { flex: none; font-size: 12px; color: var(--text-faint); }

/* ---------- 案例页 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.filter-bar a { padding: 8px 20px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); font-size: 14px; color: var(--text-soft); }
.filter-bar a:hover { border-color: var(--brand); color: var(--brand); }
.filter-bar a.is-cur { background: var(--brand); border-color: var(--brand); color: #fff; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .3s, box-shadow .3s; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); }
.case-card__cover { height: 170px; background: linear-gradient(135deg, rgba(29,111,163,.14), rgba(62,142,90,.14)); display: grid; place-items: center; color: var(--brand); }
.case-card__cover img { width: 100%; height: 100%; object-fit: cover; }
.case-card__body { padding: 20px 22px; }
.case-card__body h3 { font-size: 16px; margin-bottom: 8px; }
.case-card__body h3 a { color: var(--text); }
.case-card__body h3 a:hover { color: var(--brand); }
.case-card__meta { display: flex; flex-wrap: wrap; gap: 8px; font-size: 12px; color: var(--text-faint); margin-bottom: 8px; }
.case-card__meta em { font-style: normal; color: var(--brand); background: rgba(29,111,163,.1); padding: 2px 10px; border-radius: 999px; }
.case-card__body p { font-size: 13px; color: var(--text-soft); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.case-detail__cover { border-radius: var(--radius); overflow: hidden; margin-bottom: 28px; background: var(--surface-cool); }
.case-detail__meta { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 28px; }
.case-detail__meta div { padding: 16px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; font-size: 13px; }
.case-detail__meta b { display: block; color: var(--text-faint); font-size: 12px; font-weight: 400; margin-bottom: 4px; }
.case-detail__results { margin-top: 28px; padding: 24px; border-radius: 10px; background: var(--surface-cool); border-left: 4px solid var(--accent); }

/* ---------- 通用单页 / 关于 / 联系 ---------- */
.page-content { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 44px; }
.page-content h2 { margin: 26px 0 12px; }
.page-content p { margin-bottom: 14px; color: var(--text-soft); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.form { display: grid; gap: 16px; }
.form label { font-size: 14px; font-weight: 600; }
.form input, .form textarea { width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px; font-size: 15px; font-family: inherit; background: var(--bg); transition: border-color .25s; }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--brand); }
.flash { padding: 14px 18px; border-radius: 10px; margin-bottom: 18px; font-size: 14px; }
.flash--ok { background: rgba(62,142,90,.1); color: var(--accent-deep); border: 1px solid rgba(62,142,90,.35); }
.flash--err { background: rgba(160, 60, 40, .08); color: #9c3d24; border: 1px solid rgba(160,60,40,.25); }

/* ---------- county / sitemap / 404 / search ---------- */
.county-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sitemap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.sitemap-grid h3 { margin-bottom: 12px; }
.sitemap-grid li a { font-size: 14px; color: var(--text-soft); padding: 4px 0; display: inline-block; }
.sitemap-grid li a:hover { color: var(--brand); }
.empty-state { text-align: center; padding: 70px 20px; color: var(--text-faint); }
.empty-state .big { font-size: 44px; font-weight: 800; color: var(--brand-soft); margin-bottom: 10px; }
.error-hero { text-align: center; padding: 110px 24px; }
.error-hero h1 { font-size: 96px; color: var(--brand-soft); line-height: 1; margin-bottom: 16px; }

/* ---------- footer ---------- */
.site-footer { background: #142F42; color: rgba(255,255,255,.66); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px; padding: 60px 24px 40px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col a { display: block; padding: 5px 0; font-size: 14px; color: rgba(255,255,255,.6); }
.footer-col a:hover { color: var(--brand-soft); }
.brand--footer { color: #fff; font-size: 17px; margin-bottom: 14px; }
.footer-desc { font-size: 13px; line-height: 1.8; margin-bottom: 14px; }
.footer-contact { display: flex; align-items: center; gap: 8px; font-size: 13px; margin-bottom: 8px; }
.footer-contact a { display: inline; padding: 0; color: rgba(255,255,255,.72); }
.footer-contact a:hover { color: var(--brand-soft); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 0; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.footer-bottom p { font-size: 13px; }

/* ---------- 滚动入场 reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal[data-delay="2"] { transition-delay: .24s; }
.reveal[data-delay="3"] { transition-delay: .36s; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- 响应式 4→2→1 ---------- */
@media (max-width: 1024px) {
  .hero__art { opacity: .4; }
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .trust__band { grid-template-columns: repeat(2, 1fr); }
  .trust__item:nth-child(3) { border-left: none; }
  .layout { grid-template-columns: 1fr; }
  .case-grid, .county-grid, .sitemap-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .cta--proof { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; top: 0; right: -100%; width: min(320px, 84vw); height: 100vh;
    flex-direction: column; align-items: stretch; gap: 0; padding: 84px 22px 30px;
    background: var(--surface); box-shadow: -14px 0 40px rgba(0,0,0,.15);
    transition: right .35s ease; overflow-y: auto; z-index: 99;
  }
  .main-nav.is-open { right: 0; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-link { display: flex; justify-content: space-between; padding: 13px 10px; }
  .nav-panel { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; padding: 0 0 0 16px; }
  .nav-phone { margin-top: 18px; justify-content: center; }
  .hero { min-height: 560px; padding: 64px 0 96px; }
  .hero__slide h1 { font-size: 30px; }
  .hero__art { display: none; }
  .trust { margin-top: -42px; }
  .trust__band, .article-grid, .biz-grid, .steps, .case-grid, .county-grid, .sitemap-grid, .contact-grid, .cta--proof, .detail__nav, .case-detail__meta { grid-template-columns: 1fr; }
  .steps::before { display: none; }
  .trust__item { border-left: none; border-top: 1px solid var(--line); }
  .trust__item:first-child { border-top: none; }
  .section { padding: 52px 0; }
  .detail, .page-content { padding: 26px 20px; }
  .cta { padding: 34px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom-inner { flex-direction: column; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .hero__slide.is-on { opacity: 1; transform: none; }
}

/* ===== zfkf 悬浮客服（统一标准组件）===== */
.zfkf-float{position:fixed;right:20px;bottom:120px;z-index:9999;display:flex;flex-direction:column;gap:10px}
.zfkf-item{position:relative;width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;text-decoration:none;box-shadow:0 4px 14px rgba(0,0,0,.18);transition:all .25s;cursor:pointer}
.zfkf-item:hover{transform:scale(1.08);color:#fff}
.zfkf-phone{background:#2563eb}
.zfkf-wechat{background:#07c160}
.zfkf-consult{background:#f59e0b}
.zfkf-top{background:#334155}
.zfkf-tip{position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%);white-space:nowrap;background:rgba(0,0,0,.78);color:#fff;font-size:12px;padding:5px 10px;border-radius:6px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:10001}
.zfkf-item:hover .zfkf-tip{opacity:1}
.zfkf-wechat-mask{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:10000;display:none;align-items:center;justify-content:center}
.zfkf-wechat-mask.zfkf-show{display:flex}
.zfkf-wechat-box{background:#fff;border-radius:12px;padding:24px;text-align:center;position:relative;max-width:80vw}
.zfkf-wechat-box img{width:180px;height:180px;object-fit:contain;border:1px solid #eee;border-radius:8px}
.zfkf-wechat-noimg{width:180px;height:80px;display:flex;align-items:center;justify-content:center;background:#f6f7f9;border-radius:8px;font-size:16px;color:#07c160;font-weight:600}
.zfkf-wechat-box p{margin:12px 0 0;font-size:14px;color:#333}
.zfkf-wechat-close{position:absolute;top:8px;right:12px;font-size:22px;color:#666;cursor:pointer;line-height:1}
@media (max-width:768px){.zfkf-float{right:10px;bottom:100px}.zfkf-item{width:42px;height:42px}.zfkf-tip{display:none}}

/* ===== 横向溢出统一防护（clip 不影响 sticky 吸顶）===== */
html{overflow-x:clip}
/* 横滑容器滚动条隐藏 */
.main-nav,.news-rail{scrollbar-width:none;-ms-overflow-style:none}
.main-nav::-webkit-scrollbar,.news-rail::-webkit-scrollbar{display:none}

/* ===== 正文内容溢出防护（表格/图片/长词）===== */
.detail__content table,.page-content table{display:block;max-width:100%;overflow-x:auto}
.detail__content img,.page-content img{max-width:100%;height:auto}
.detail__content pre,.page-content pre{overflow-x:auto}
.detail__content,.page-content{overflow-wrap:break-word}
/* 品牌名/标题单行溢出省略 */
.brand{min-width:0}
.brand__name{overflow:hidden;text-overflow:ellipsis}
.news-mini__title{overflow:hidden;text-overflow:ellipsis}

/* 资讯网格响应式（4列 -> 3 -> 2 -> 1）*/
@media (max-width: 1200px) { .news-rail { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 900px) { .news-rail { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .news-rail { grid-template-columns: 1fr; } }
/* 上一篇/下一篇防溢出（v4.5 修复：长标题截断，grid 子项约束）*/
.detail__nav-cell{min-width:0}
.detail__nav-cell>a,.detail__nav-cell>span{display:block;height:100%;box-sizing:border-box}
.detail__nav a{display:block;overflow:hidden}
.detail__nav b{flex:none}
.detail__nav-title{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ===== tz-rich-text typography (auto-appended) ===== */
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article)>:first-child{margin-top:0}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article)>:last-child{margin-bottom:0}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) p{margin:0 0 1.05em;line-height:1.9}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h1,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h2{margin:1.6em 0 .7em;line-height:1.4;font-weight:700}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h1{font-size:1.6em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h2{font-size:1.4em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h3{margin:1.4em 0 .6em;font-size:1.2em;line-height:1.45;font-weight:700}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h4{margin:1.2em 0 .5em;font-size:1.08em;font-weight:700}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h5,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h6{margin:1.1em 0 .5em;font-size:1em;font-weight:700}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) ul,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) ol{margin:0 0 1.05em;padding-left:1.7em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) li{margin:.35em 0;line-height:1.8}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) img{max-width:100%;height:auto;border-radius:8px}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) figure{margin:1.2em 0}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) figcaption{margin-top:.5em;font-size:.85em;opacity:.7;text-align:center}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) blockquote{margin:1.2em 0;padding:.2em 0 .2em 1em;border-left:3px solid currentColor;opacity:.85}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:.96em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) th,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) td{border:1px solid rgba(127,127,127,.3);padding:.5em .75em;text-align:left}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) th{font-weight:700;background:rgba(127,127,127,.06)}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) hr{margin:1.6em 0;border:0;border-top:1px solid rgba(127,127,127,.28)}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) pre{overflow:auto;padding:.8em 1em;border-radius:8px;background:rgba(127,127,127,.1);font-size:.92em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) code{font-size:.94em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) strong,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) b{font-weight:700}
:where(.rich-text) ul{list-style:disc}
:where(.rich-text) ol{list-style:decimal}
:where(.rich-text) a{text-decoration:underline;text-underline-offset:3px}

/* ===== tz-footer-legal (auto-appended) ===== */
.zf-legal-line a{color:inherit;text-decoration:none;opacity:.92}
.zf-legal-line a:hover{opacity:1;text-decoration:underline;text-underline-offset:3px}
.zf-legal-line .zf-legal-all{font-weight:600}
.zf-legal-line .zf-legal-copy{opacity:.95}
.zf-legal-line .zf-legal-addr{opacity:.82}
.zf-legal-line .zf-legal-police{text-decoration:none}
@media (max-width:640px){.zf-legal-line{column-gap:.55em;line-height:1.7}}