/* ============================================================
   融森园林 · 对客官网 V3.0 设计系统
   深林鎏金：东方园林 × 源头大厂 × 自然有机
   依据 DESIGN.md（2026-08-21 Codex）
   ============================================================ */

:root {
  /* 配色 */
  --bg: #F7F4EC;
  --surface: #FFFFFF;
  --surface-soft: #F1EDE2;
  --bg-deep: #10281C;
  --bg-deep-2: #1B4D2E;
  --primary: #1B4D2E;
  --primary-deep: #123A22;
  --accent: #C9A227;
  --accent-deep: #A8861B;
  --accent-soft: #F0E3BC;
  --text: #24352A;
  --text-2: #5C6B60;
  --text-3: #93A094;
  --border: #E4DCC8;
  --white: #FFFFFF;

  /* 字体 */
  --font-display: 'Noto Serif SC','Songti SC','Source Han Serif SC','SimSun',serif;
  --font-body: 'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-data: 'Inter','SF Mono','Consolas','Noto Sans SC',monospace;

  /* 间距（4px 网格） */
  --space-xs: 4px; --space-sm: 8px; --space-md: 12px; --space-lg: 16px;
  --space-xl: 20px; --space-2xl: 24px; --space-3xl: 32px; --space-4xl: 48px;

  /* 圆角 */
  --radius-sm: 6px; --radius-md: 10px; --radius-lg: 14px; --radius-xl: 18px;

  /* 阴影 */
  --shadow-sm: 0 2px 10px rgba(16,40,28,.06);
  --shadow-md: 0 6px 18px rgba(16,40,28,.10);
  --shadow-lg: 0 14px 30px rgba(16,40,28,.14);
  --shadow-gold: 0 6px 18px rgba(201,162,39,.35);
  --shadow-fixed: 0 -6px 20px rgba(16,40,28,.08);

  /* 动效 */
  --t-fast: .2s; --t-mid: .3s; --t-slow: .6s;
  --ease: cubic-bezier(.25,.1,.25,1);
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.8;
  min-height: 100vh;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* 入场动画（注意排除固定栏，防止覆盖其 translateX 居中） */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.wrap > *:not(.bottom-nav):not(.fixed-bar),
.hero-inner > * { animation: fadeInUp var(--t-slow) var(--ease) both; }
.wrap > *:nth-child(2) { animation-delay: .05s; }
.wrap > *:nth-child(3) { animation-delay: .1s; }
.wrap > *:nth-child(4) { animation-delay: .15s; }

/* 滚动 reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease); }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ============ Hero ============ */
.hero {
  position: relative;
  height: min(78vh, 620px);
  min-height: 480px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-deep);
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-bg .hero-img-mob { display: none; }
.hero-shade {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(16,40,28,.55) 0%, rgba(16,40,28,.35) 45%, rgba(16,40,28,.75) 100%),
    linear-gradient(90deg, rgba(16,40,28,.35), rgba(16,40,28,.05) 50%, rgba(16,40,28,.35));
}
.hero-inner {
  position: relative; z-index: 2;
  text-align: center;
  padding: 0 var(--space-2xl);
  max-width: 720px;
}
.hero-eyebrow {
  color: #E8C766;
  font-size: 13px;
  letter-spacing: .22em;
  margin-bottom: var(--space-md);
  font-weight: 500;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(34px, 7vw, 58px);
  font-weight: 700;
  color: #FFF;
  letter-spacing: .08em;
  line-height: 1.25;
  text-shadow: 0 2px 24px rgba(16,40,28,.45);
}
.hero-title .gold { color: #E8C766; }
.hero-sub {
  margin: var(--space-lg) auto 0;
  color: rgba(255,255,255,.92);
  font-size: 15px;
  letter-spacing: .05em;
  line-height: 1.9;
  max-width: 560px;
}
.hero-cta { margin-top: var(--space-3xl); display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }
.hero-divider {
  width: 64px; height: 1px; margin: var(--space-2xl) auto 0;
  background: linear-gradient(90deg, transparent, #C9A227, transparent);
}

.hero-stats {
  position: absolute; left: 50%; transform: translateX(-50%); bottom: 0; z-index: 2;
  width: 100%; max-width: 640px;
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: rgba(16,40,28,.55);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(232,199,102,.35);
}
.hero-stats .stat { padding: 14px 6px; text-align: center; color: #fff; }
.hero-stats .stat + .stat { border-left: 1px solid rgba(255,255,255,.12); }
.hero-stats .stat b { display: block; font-family: var(--font-data); font-size: 28px; color: #E8C766; font-weight: 800; letter-spacing: .02em; line-height: 1.2; }
.hero-stats .stat:first-child b { font-size: 38px; line-height: 1.1; }
.hero-stats .stat span { font-size: 11px; color: rgba(255,255,255,.8); letter-spacing: .08em; }

/* ============ 区块 ============ */
.sec { padding: var(--space-4xl) 0 var(--space-3xl); }
.sec-title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .06em;
  display: flex; align-items: baseline; gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}
.sec-title::before {
  content: ''; width: 4px; height: 22px; flex-shrink: 0;
  background: linear-gradient(180deg, var(--accent), var(--accent-deep));
  border-radius: 2px;
  transform: translateY(2px);
}
.sec-title .sec-sub { font-family: var(--font-body); font-size: 13px; color: var(--text-3); font-weight: 400; letter-spacing: .02em; }

.more { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--primary); font-weight: 600; margin-top: var(--space-lg); }
.more:hover { color: var(--accent-deep); }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: .04em;
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid), background var(--t-mid);
  min-height: 44px;
}
.btn:active { transform: scale(.97); }
.btn-gold {
  background: linear-gradient(135deg, #D9B64B, #C9A227);
  color: #10281C;
  box-shadow: var(--shadow-gold);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(201,162,39,.45); }
.btn-ghost {
  border: 1px solid rgba(255,255,255,.55);
  color: #fff;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255,255,255,.18); }
.btn-green {
  background: linear-gradient(135deg, var(--bg-deep-2), var(--primary-deep));
  color: #fff; box-shadow: var(--shadow-md);
}
.btn-green:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ============ 首页入口卡 ============ */
.entry-card {
  display: flex; align-items: center; gap: var(--space-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px var(--space-xl);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid), border-color var(--t-mid);
  margin-bottom: var(--space-md);
}
.entry-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.entry-card .ec-icon {
  width: 46px; height: 46px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  border-radius: 12px; color: #E8C766;
}
.entry-card .ec-icon svg { width: 22px; height: 22px; }
.entry-card .ec-body { flex: 1; min-width: 0; }
.entry-card .ec-title { font-family: var(--font-display); font-size: 17px; font-weight: 600; color: var(--text); letter-spacing: .03em; }
.entry-card .ec-desc { font-size: 12.5px; color: var(--text-3); margin-top: 2px; line-height: 1.6; }
.entry-card .ec-arrow { color: var(--accent); font-size: 20px; flex-shrink: 0; transition: transform var(--t-mid); }
.entry-card:hover .ec-arrow { transform: translateX(4px); }
.entry-sell { border-color: rgba(201,162,39,.5); background: linear-gradient(135deg, #FFF, #FDF8EA); }
.entry-sell .ec-icon { background: linear-gradient(135deg, #D9B64B, #C9A227); color: #10281C; }
.entry-sell .ec-desc b { color: var(--accent-deep); font-family: var(--font-data); }

/* 双列并排 */
.entry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.entry-grid .entry-card { margin-bottom: 0; }
.entry-grid .entry-card.full { grid-column: 1 / -1; }

/* ============ 印章 ============ */
.stamp {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border: 1px solid var(--accent);
  color: var(--accent-deep); background: var(--accent-soft);
  border-radius: 4px; font-size: 12px; letter-spacing: .14em;
  font-weight: 600;
}

/* ============ 选树页 ============ */
.page-banner {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, var(--bg-deep), var(--bg-deep-2));
  padding: 40px var(--space-lg) 52px;
  color: #fff; text-align: center;
}
.page-banner::after {
  content: ''; position: absolute; right: -40px; top: -40px;
  width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(232,199,102,.18) 0%, transparent 70%);
}
.page-banner h1 { font-family: var(--font-display); font-size: 26px; letter-spacing: .1em; font-weight: 700; }
.page-banner p { margin-top: 8px; font-size: 13px; color: rgba(255,255,255,.85); letter-spacing: .06em; }
.page-banner .stamp { margin-top: 14px; background: rgba(201,162,39,.12); color: #E8C766; border-color: rgba(201,162,39,.5); }

.filter-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md);
  margin: -26px auto 0; position: relative; z-index: 5;
  max-width: 720px; padding: 0 var(--space-lg);
}
.filter-bar select {
  width: 100%; height: 44px; padding: 0 34px 0 14px;
  border: 1px solid var(--border); border-radius: var(--radius-md);
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23C9A227' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 14px center;
  appearance: none; -webkit-appearance: none;
  font-size: 14px; color: var(--text);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--t-fast);
}
.filter-bar select:focus { outline: none; border-color: var(--accent); }

/* 树卡（编号牌式） */
.tree-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); padding: var(--space-3xl) 0; }
.tree-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-sm);
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid), border-color var(--t-mid);
  display: flex; flex-direction: column;
}
.tree-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(201,162,39,.55); }
.tree-card .pic { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--surface-soft); }
.tree-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow) var(--ease); }
.tree-card:hover .pic img { transform: scale(1.06); }
.tree-card .no {
  position: absolute; top: 10px; left: 10px; z-index: 2;
  padding: 4px 10px; background: rgba(16,40,28,.78); color: #E8C766;
  font-family: var(--font-data); font-size: 11px; letter-spacing: .08em;
  border-radius: 6px; backdrop-filter: blur(4px);
}
.tree-card .info { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 6px; }
.tree-card .name { font-family: var(--font-display); font-size: 17px; font-weight: 600; color: var(--text); letter-spacing: .02em; }
.tree-card .meta { font-size: 12.5px; color: var(--text-2); line-height: 1.6; }
.tree-card .tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 2px; }
.tree-card .tag {
  font-size: 11px; padding: 2px 8px; border-radius: 999px;
  background: var(--surface-soft); color: var(--primary); border: 1px solid var(--border);
}
.tree-card .tag.price { color: var(--accent-deep); border-color: rgba(201,162,39,.4); background: var(--accent-soft); }

.btn-more {
  display: block; margin: 0 auto var(--space-3xl);
  padding: 10px 30px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--primary); font-size: 14px; font-weight: 600;
  transition: all var(--t-mid);
}
.btn-more:hover { border-color: var(--accent); color: var(--accent-deep); }

/* 空状态 */
.empty { text-align: center; padding: 80px var(--space-lg); color: var(--text-2); }
.empty .em { width: 84px; height: 84px; margin: 0 auto var(--space-lg); opacity: .4; color: var(--primary); }
.empty h3 { font-family: var(--font-display); font-size: 18px; color: var(--text); margin-bottom: 6px; }
.empty p { font-size: 13.5px; color: var(--text-3); }

/* ============ 详情页 ============ */
.detail-wrap { max-width: 720px; margin: 0 auto; padding: 0 var(--space-lg) 120px; }
.detail-top { display: flex; align-items: center; gap: var(--space-md); padding: var(--space-lg) 0; }
.detail-top .back {
  color: var(--text-2); font-size: 13px; white-space: nowrap;
  padding: 6px 12px; border: 1px solid var(--border); border-radius: var(--radius-md);
  transition: color var(--t-fast), border-color var(--t-fast);
}
.detail-top .back:hover { color: var(--accent-deep); border-color: var(--accent); }
.detail-name { flex: 1; font-family: var(--font-display); font-size: 21px; color: var(--text); letter-spacing: .03em; line-height: 1.4; }
.detail-sku {
  font-family: var(--font-data); font-size: 12px; color: var(--accent-deep);
  border: 1px solid rgba(201,162,39,.5); background: var(--accent-soft);
  border-radius: var(--radius-sm); padding: 3px 10px; white-space: nowrap; letter-spacing: .05em;
}
.detail .gallery { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); background: var(--surface); }
.detail .gallery .main { aspect-ratio: 4/3; background: var(--surface-soft); }
.detail .gallery .main img { width: 100%; height: 100%; object-fit: cover; }
.detail .gallery .thumbs { display: flex; gap: 8px; padding: 10px; }
.detail .gallery .thumbs img { width: 60px; height: 60px; object-fit: cover; border-radius: 8px; cursor: pointer; border: 2px solid transparent; transition: border-color var(--t-fast); }
.detail .gallery .thumbs img.active { border-color: var(--accent); }
.detail .gallery .thumbs img:hover { border-color: var(--accent); }
.video-wrap { margin-top: var(--space-lg); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.video-wrap video { width: 100%; display: block; background: #000; }
.detail .data {
  margin-top: var(--space-lg); background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-sm);
}
.detail .data table { width: 100%; border-collapse: collapse; }
.detail .data td { padding: 11px 16px; font-size: 14px; border-bottom: 1px solid #F0EBDF; }
.detail .data td:first-child { color: var(--text-3); width: 88px; background: #FBF9F3; font-size: 13px; }
.detail .data tr:last-child td { border-bottom: none; }
.detail .data td:last-child { color: var(--text); font-weight: 500; }
.detail .spec {
  margin-top: var(--space-lg); text-align: center;
  color: var(--text-3); font-size: 12.5px; letter-spacing: .08em;
}

.fixed-bar {
  position: fixed; left: 50%; transform: translateX(-50%); bottom: 0; z-index: 20;
  width: 100%; max-width: 480px;
  display: flex; gap: 10px; padding: 12px var(--space-lg) calc(12px + env(safe-area-inset-bottom));
  background: rgba(255,255,255,.94); backdrop-filter: blur(14px);
  border-top: 1px solid var(--border); box-shadow: var(--shadow-fixed);
}
.fixed-bar .btn { flex: 1; }
.fixed-bar svg { width: 18px; height: 18px; }

/* ============ 顶部导航（桌面端） ============ */
.top-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 30;
  display: none;
  background: rgba(16,40,28,.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(232,199,102,.2);
}
.top-nav-inner {
  max-width: 1160px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px; height: 60px;
}
.top-nav .tn-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-size: 18px; font-weight: 700;
  color: #fff; letter-spacing: .12em;
}
.top-nav .tn-logo svg { width: 26px; height: 26px; color: #E8C766; }
.top-nav .tn-links { display: flex; gap: 8px; }
.top-nav .tn-links a {
  padding: 8px 16px; border-radius: 999px;
  font-size: 14px; color: rgba(255,255,255,.8); letter-spacing: .04em;
  transition: all var(--t-fast);
}
.top-nav .tn-links a:hover { color: #E8C766; background: rgba(255,255,255,.08); }
.top-nav .tn-links a.active { color: #10281C; background: linear-gradient(135deg, #D9B64B, #C9A227); font-weight: 600; }
.top-nav .tn-cta {
  padding: 8px 20px; border-radius: 999px;
  background: linear-gradient(135deg, #D9B64B, #C9A227);
  color: #10281C; font-size: 14px; font-weight: 600; letter-spacing: .04em;
  box-shadow: var(--shadow-gold); transition: transform var(--t-fast);
}
.top-nav .tn-cta:hover { transform: translateY(-1px); }

/* 有顶部导航时，hero 往下挪一点避免被挡 */
body.has-top-nav .hero { padding-top: 60px; }
body.has-top-nav .page-banner { padding-top: calc(40px + 60px); }

/* ============ 底部导航 ============ */
.bottom-nav {
  position: fixed; left: 50%; transform: translateX(-50%); bottom: 0; z-index: 20;
  width: 100%; max-width: 480px; height: 56px;
  background: rgba(255,255,255,.94); backdrop-filter: blur(14px);
  border-top: 1px solid var(--border); box-shadow: var(--shadow-fixed);
  display: flex;
}
.bottom-nav a {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; font-size: 10px; color: var(--text-3); letter-spacing: .04em;
  transition: color var(--t-fast);
}
.bottom-nav a svg { width: 20px; height: 20px; }
.bottom-nav a.active { color: var(--accent-deep); font-weight: 600; }
.bottom-nav a.active svg { color: var(--accent); }

body.has-fixed-nav { padding-bottom: 72px; }

/* ============ 场景页 ============ */
.scene-list { padding: var(--space-3xl) 0; }
.scene-block { margin-bottom: var(--space-4xl); }
.scene-block h2 { font-family: var(--font-display); font-size: 20px; color: var(--text); letter-spacing: .06em; margin-bottom: var(--space-md); }
.scene-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.scene-imgs .img-item { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.scene-imgs .img-item:first-child { grid-column: 1 / -1; }
.scene-imgs img { width: 100%; aspect-ratio: 3/4; object-fit: cover; display: block; transition: transform var(--t-slow) var(--ease); }
.scene-imgs .img-item:first-child img { aspect-ratio: 16/10; }
.scene-imgs .img-item:hover img { transform: scale(1.05); }
.scene-imgs .ai-flag {
  position: absolute; right: 8px; bottom: 8px;
  font-size: 10px; color: #fff; background: rgba(16,40,28,.6);
  padding: 2px 8px; border-radius: 999px; letter-spacing: .1em;
  backdrop-filter: blur(4px);
}
.scene-note { margin-top: var(--space-md); font-size: 13.5px; color: var(--text-2); line-height: 1.9; }

/* ============ 养护页 ============ */
.care-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); padding: var(--space-3xl) 0; }
.care-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 18px 16px; box-shadow: var(--shadow-sm);
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid);
}
.care-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.care-item .ci-icon {
  width: 38px; height: 38px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent-deep); margin-bottom: 10px;
}
.care-item .ci-icon svg { width: 20px; height: 20px; }
.care-item h2 { font-family: var(--font-display); font-size: 15px; color: var(--text); margin-bottom: 6px; letter-spacing: .03em; }
.care-item p { font-size: 12.5px; color: var(--text-2); line-height: 1.8; }

/* ============ 联系页 ============ */
.contact-main { padding: var(--space-3xl) 0; max-width: 720px; margin: 0 auto; }
.contact-hero-card {
  background: linear-gradient(135deg, var(--bg-deep), var(--bg-deep-2));
  border-radius: var(--radius-xl); padding: 28px 24px; color: #fff;
  text-align: center; box-shadow: var(--shadow-md);
  position: relative; overflow: hidden;
}
.contact-hero-card::after {
  content: ''; position: absolute; right: -30px; bottom: -30px;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(232,199,102,.2) 0%, transparent 70%);
}
.contact-hero-card .company { font-family: var(--font-display); font-size: 20px; letter-spacing: .1em; }
.contact-hero-card .phone {
  display: block; margin-top: 10px;
  font-family: var(--font-data); font-size: 30px; color: #E8C766; font-weight: 700; letter-spacing: .04em;
}
.contact-hero-card .phone-note { margin-top: 6px; font-size: 12px; color: rgba(255,255,255,.75); letter-spacing: .1em; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); margin-top: var(--space-lg); }
.info-row {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 16px;
  box-shadow: var(--shadow-sm);
}
.info-row .icon { flex-shrink: 0; width: 22px; height: 22px; color: var(--accent); margin-top: 2px; }
.info-row .icon svg { width: 22px; height: 22px; }
.info-row .body { flex: 1; min-width: 0; }
.info-row .label { font-size: 12px; color: var(--text-3); letter-spacing: .1em; margin-bottom: 4px; }
.info-row .value { font-size: 14.5px; color: var(--text); line-height: 1.7; word-break: break-all; }
.info-row .value .note { display: block; font-size: 12px; color: var(--text-3); margin-top: 2px; }
.qr-card { text-align: center; }
.qr-card img { width: 150px; height: 150px; margin: 0 auto 10px; border-radius: var(--radius-md); border: 1px solid var(--border); }
.qr-card .qr-note { font-size: 12.5px; color: var(--text-2); }

/* ============ 首页场景/养护预览 ============ */
.scene-preview { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.scene-preview .img-item { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.scene-preview .img-item:first-child { grid-column: 1 / -1; }
.scene-preview img { width: 100%; aspect-ratio: 3/4; object-fit: cover; transition: transform var(--t-slow) var(--ease); }
.scene-preview .img-item:first-child img { aspect-ratio: 16/10; }
.scene-preview .img-item:hover img { transform: scale(1.05); }
.scene-preview .ai-flag {
  position: absolute; right: 8px; bottom: 8px;
  font-size: 10px; color: #fff; background: rgba(16,40,28,.6);
  padding: 2px 8px; border-radius: 999px; letter-spacing: .1em;
}

.care-preview { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.care-preview .care-item { margin: 0; }

/* 首页联系条 */
.contact-strip {
  display: grid; grid-template-columns: auto 1fr; gap: var(--space-xl);
  background: linear-gradient(135deg, var(--bg-deep), var(--bg-deep-2));
  border-radius: var(--radius-xl); padding: 28px 24px; color: #fff;
  align-items: center; box-shadow: var(--shadow-md);
}
.contact-strip .qr { width: 110px; height: 110px; border-radius: var(--radius-md); background: #fff; padding: 6px; }
.contact-strip .cs-phone { font-family: var(--font-data); font-size: 26px; color: #E8C766; font-weight: 700; letter-spacing: .04em; display: block; margin-top: 6px; }
.contact-strip .cs-sub { font-size: 12.5px; color: rgba(255,255,255,.8); letter-spacing: .06em; margin-top: 4px; }
.contact-strip .cs-btn { margin-top: 12px; }

/* 页脚 */
.site-foot {
  text-align: center; padding: 28px 16px 92px; color: var(--text-3); font-size: 12px; letter-spacing: .06em;
}
.site-foot .foot-logo { font-family: var(--font-display); color: var(--primary); font-size: 14px; letter-spacing: .2em; margin-bottom: 6px; }

/* 灯箱 */
.modal-mask {
  position: fixed; inset: 0; z-index: 50; background: rgba(16,40,28,.92);
  display: none; align-items: center; justify-content: center; padding: 20px;
}
.modal-mask.show { display: flex; }
.modal-mask img { max-width: 100%; max-height: 90vh; border-radius: var(--radius-md); }

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .tree-grid { grid-template-columns: repeat(2, 1fr); }
  .care-grid, .care-preview { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .hero { height: 86vh; min-height: 560px; }
  .hero-bg .hero-img-desk { display: none; }
  .hero-bg .hero-img-mob { display: block; }
  .hero-title { letter-spacing: .06em; }
  .hero-stats .stat b { font-size: 17px; }
  .filter-bar { grid-template-columns: 1fr 1fr; }
  .entry-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .scene-imgs, .scene-preview { grid-template-columns: 1fr; }
  .scene-imgs .img-item:first-child, .scene-preview .img-item:first-child { grid-column: auto; }
  .scene-imgs img, .scene-preview img, .scene-imgs .img-item:first-child img, .scene-preview .img-item:first-child img { aspect-ratio: 4/3; }
  .contact-strip { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .sec-title { font-size: 21px; }
  .detail-name { font-size: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}
/* V3.0 补充：筛选清除按钮 + 筛选操作行 */
.filter-actions { max-width: 720px; margin: var(--space-md) auto 0; text-align: center; }
.btn-clear {
  display: inline-flex; align-items: center; justify-content: center;
  height: 38px; padding: 0 20px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text-2); font-size: 13px; font-weight: 500;
  transition: border-color var(--t-fast), color var(--t-fast);
}
.btn-clear:hover { border-color: var(--accent); color: var(--accent-deep); }
.contact-grid .bases-col { display: flex; flex-direction: column; gap: var(--space-md); }

.info-row .value .phone { display: block; margin-top: 3px; color: var(--accent-deep); font-family: var(--font-data); font-size: 13.5px; letter-spacing: .02em; }

/* ============================================================
   V3.1 响应式强化（2026-08-21 Codex）
   手机端优先：收紧 hero 高度与节奏、字号/间距、底部导航触控；
   PC 端：内容容器加宽、卡片更饱满，减少两侧空洞。
   ============================================================ */

/* 桌面 ≥901px：容器加宽到 1160，区块更饱满，顶部导航显示，底部导航隐藏 */
@media (min-width: 901px) {
  .wrap { max-width: 1160px; }
  .hero-stats { max-width: 720px; }
  .sec-title { font-size: 26px; }
  .tree-card .name { font-size: 18px; }
  .tree-card .meta { font-size: 13px; line-height: 1.65; }
  .scene-preview, .scene-imgs { gap: 16px; }
  .entry-card { padding: 20px 24px; }
  .contact-strip { padding: 32px 32px; }

  /* 顶部导航显示，底部导航隐藏 */
  .top-nav { display: block; }
  .bottom-nav { display: none !important; }
  body.has-fixed-nav { padding-bottom: 20px !important; }

  /* Hero 标题桌面端加大撑满 */
  .hero-title { font-size: clamp(44px, 6vw, 72px); }
  .hero-eyebrow { font-size: 15px; letter-spacing: .28em; }
  .hero-sub { font-size: 17px; max-width: 640px; }
  .hero-cta .btn { padding: 14px 36px; font-size: 16px; }

  /* 去选树核心 CTA 桌面端更突出 */
  .entry-sell { padding: 28px 32px; }
  .entry-sell .ec-title { font-size: 24px; }
  .entry-sell .ec-desc { font-size: 14px; }
  .entry-sell .ec-icon { width: 56px; height: 56px; }
  .entry-sell .ec-icon svg { width: 28px; height: 28px; }
}

/* 平板 601-900：hero 略收 */
@media (min-width: 601px) and (max-width: 900px) {
  .hero { height: min(68vh, 560px); min-height: 480px; }
  .wrap { max-width: 860px; }
}

/* 手机 ≤600px：整体收紧、触控加大 */
@media (max-width: 600px) {
  body { line-height: 1.7; }
  .wrap { padding: 0 14px; }

  .hero { height: min(72vh, 600px); min-height: 520px; }
  .hero-inner { padding: 0 16px; }
  .hero-eyebrow { font-size: 12px; letter-spacing: .16em; margin-bottom: 10px; }
  .hero-title { font-size: 36px; letter-spacing: .06em; }
  .hero-sub { font-size: 14px; line-height: 1.7; margin-top: 12px; }
  .hero-cta { margin-top: 24px; gap: 10px; }
  .hero-cta .btn { padding: 12px 22px; font-size: 14.5px; min-height: 46px; }
  .hero-divider { margin-top: 20px; }
  .hero-stats .stat { padding: 12px 4px; }
  .hero-stats .stat b { font-size: 16px; }
  .hero-stats .stat span { font-size: 10.5px; letter-spacing: .04em; }

  .sec { padding: 36px 0 28px; }
  .sec-title { font-size: 21px; margin-bottom: 20px; }
  .sec-title .sec-sub { font-size: 12px; }

  .entry-card { padding: 16px 16px; border-radius: 12px; }
  .entry-sell { padding: 20px 16px; }
  .entry-sell .ec-title { font-size: 19px; }
  .entry-card .ec-icon { width: 42px; height: 42px; border-radius: 11px; }
  .entry-card .ec-desc { font-size: 12px; }
  .entry-grid { gap: 10px; }

  .scene-preview, .scene-imgs { gap: 10px; }
  .scene-preview .img-item, .scene-imgs .img-item { border-radius: 12px; }
  .scene-block h2 { font-size: 18px; }
  .scene-note { font-size: 13px; }

  .care-preview { gap: 10px; }
  .care-item { padding: 14px 12px; border-radius: 12px; }
  .care-item p { font-size: 12px; line-height: 1.65; }
  .care-item h2 { font-size: 14px; }

  .contact-strip { padding: 22px 18px; gap: 14px; border-radius: 16px; }
  .contact-strip .qr { width: 96px; height: 96px; }
  .contact-strip .cs-phone { font-size: 24px; }
  .contact-strip .cs-sub { font-size: 12px; }

  .page-banner { padding: 32px 14px 44px; }
  .page-banner h1 { font-size: 24px; }
  .page-banner p { font-size: 12.5px; }

  .filter-bar { padding: 0 14px; gap: 10px; margin-top: -24px; }
  .filter-bar select { height: 46px; font-size: 13.5px; }
  .filter-actions { margin-top: 10px; }

  .tree-grid { padding: 24px 0; gap: 12px; }
  .tree-card .name { font-size: 15.5px; }
  .tree-card .meta { font-size: 12px; line-height: 1.6; }
  .tree-card .tag { font-size: 10.5px; padding: 2px 7px; }
  .tree-card .info { padding: 10px 11px 12px; gap: 5px; }

  .bottom-nav { height: 60px; }
  .bottom-nav a { font-size: 11px; }
  .bottom-nav a svg { width: 22px; height: 22px; }
  body.has-fixed-nav { padding-bottom: 76px; }

  .site-foot { padding: 24px 14px 84px; }
  .detail-top { padding: 14px 0; gap: 10px; }
  .detail-name { font-size: 17px; }
  .detail .data td { padding: 10px 14px; }
  .detail .spec { font-size: 12px; }

  .contact-main { padding: 24px 0; }
  .contact-hero-card { padding: 24px 18px; }
  .contact-hero-card .company { font-size: 18px; }
  .contact-hero-card .phone { font-size: 26px; }
  .contact-grid { gap: 10px; margin-top: 14px; }
  .info-row { padding: 14px; }
  .qr-card img { width: 136px; height: 136px; }
}