/* ==========================================================================
   景区创建之市场洞察和发展趋势 — 站点样式
   主题：浅色 / 商务数据报告风  IDE Theme: light
   ========================================================================== */

:root {
  --bg: #F5F6F4;
  --bg-soft: #EDF0ED;
  --card: #FFFFFF;
  --ink: #17262A;
  --ink-2: #33484E;
  --muted: #6E8087;
  --muted-2: #93A2A7;

  --primary: #0F4A4F;       /* 深青 — 主色 */
  --primary-2: #1B6E74;     /* 亮青 */
  --primary-soft: #E4EFEF;

  --accent: #BF5B22;        /* 工业铜橙 — 强调色 */
  --accent-soft: #FBEEE4;

  --gold: #B98A2E;
  --up: #C0392B;            /* 增长 = 红（中国市场惯例） */
  --up-soft: #FBEAE8;
  --flat: #8A9296;
  --line: #E1E6E3;
  --line-2: #EEF1EF;

  --r-s: 8px;
  --r-m: 14px;
  --r-l: 22px;

  --sh-1: 0 1px 2px rgba(23, 38, 42, .05), 0 2px 8px rgba(23, 38, 42, .04);
  --sh-2: 0 4px 12px rgba(23, 38, 42, .07), 0 16px 40px rgba(23, 38, 42, .07);
  --sh-3: 0 10px 30px rgba(15, 74, 79, .13), 0 30px 70px rgba(15, 74, 79, .10);

  --maxw: 1180px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC",
          "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
  line-height: 1.75;
}

img { max-width: 100%; display: block; }

a { color: var(--primary-2); text-decoration: none; }
a:hover { color: var(--accent); }

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

/* ---------------- 顶部导航 ---------------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  height: 66px; display: flex; align-items: center; gap: 22px;
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: .2px; color: var(--ink); }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 55%, var(--accent) 140%);
  display: grid; place-items: center; color: #fff; font-size: 15px; font-weight: 800;
  box-shadow: 0 4px 12px rgba(15, 74, 79, .28);
}
.brand small { display: block; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: .5px; line-height: 1.2; }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a {
  padding: 8px 14px; border-radius: 999px; font-size: 14px; color: var(--ink-2); font-weight: 500;
  transition: .18s;
}
.nav-links a:hover { background: var(--primary-soft); color: var(--primary); }
.nav-links a.active { background: var(--primary); color: #fff; }
.nav-cta {
  padding: 9px 18px; border-radius: 999px; font-size: 14px; font-weight: 600;
  background: var(--accent); color: #fff !important; white-space: nowrap;
  box-shadow: 0 4px 14px rgba(191, 91, 34, .3); transition: .18s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 7px 20px rgba(191, 91, 34, .36); }
.nav-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.nav-home {
  padding: 8px 15px; border-radius: 999px; font-size: 14px; font-weight: 600;
  color: var(--primary); background: var(--primary-soft); white-space: nowrap;
  display: inline-flex; align-items: center; gap: 4px; transition: .18s;
}
.nav-home::before { content: "←"; font-weight: 400; opacity: .8; }
.nav-home:hover { background: var(--primary); color: #fff; }

/* ---------------- 通用 ---------------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary); letter-spacing: .3px;
}
.badge-accent { background: var(--accent-soft); color: var(--accent); }

.sec { padding: 64px 0; }
.sec-head { margin-bottom: 30px; }
.sec-head .eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: 2.4px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 10px;
}
.sec-head h2 {
  font-size: 30px; line-height: 1.3; margin: 0 0 10px; letter-spacing: -.4px;
}
.sec-head p { margin: 0; color: var(--muted); max-width: 760px; }
.hr-line { height: 3px; width: 46px; border-radius: 3px; background: var(--accent); margin: 14px 0 0; }

/* ---------------- Hero ---------------- */
.hero { position: relative; overflow: hidden; background: #0B3438; }
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .95; }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(100deg, rgba(7, 33, 36, .96) 0%, rgba(9, 39, 42, .90) 40%, rgba(11, 52, 56, .60) 66%, rgba(11, 52, 56, .34) 100%),
    linear-gradient(115deg, rgba(15, 74, 79, .30) 0%, rgba(11, 52, 56, .20) 45%, rgba(191, 91, 34, .30) 130%);
}
.hero-in { position: relative; z-index: 2; padding: 72px 0 66px; color: #fff; }
.hero-in .kicker {
  display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 600;
  letter-spacing: 1.6px; color: #D9EEEF; background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .2); padding: 6px 14px; border-radius: 999px;
}
.hero h1 {
  font-size: 44px; line-height: 1.22; margin: 20px 0 16px; letter-spacing: -1px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, .25);
}
.hero h1 em { font-style: normal; color: #F0B26B; }
.hero p.lead {
  font-size: 17px; color: rgba(255, 255, 255, .84); max-width: 720px; margin: 0 0 26px;
}
.hero-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 30px; }
.hero-tags span {
  font-size: 13px; padding: 6px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .18); color: #EAF4F4;
}
.hero-btns { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; border-radius: 999px;
  font-size: 15px; font-weight: 600; transition: .2s; border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 24px rgba(191, 91, 34, .35); }
.btn-primary:hover { color: #fff; transform: translateY(-2px); }
.btn-ghost { background: rgba(255, 255, 255, .1); color: #fff; border-color: rgba(255, 255, 255, .32); }
.btn-ghost:hover { background: rgba(255, 255, 255, .2); color: #fff; }

/* ---------------- KPI 条 ---------------- */
.kpi-strip {
  position: relative; z-index: 3; margin-top: -34px;
}
.kpi-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-l);
  box-shadow: var(--sh-2); padding: 24px;
}
.kpi { text-align: center; padding: 6px 10px; border-right: 1px solid var(--line-2); }
.kpi:last-child { border-right: 0; }
.kpi b {
  display: block; font-size: 38px; line-height: 1.1; font-weight: 800; letter-spacing: -1.5px;
  color: var(--primary); font-variant-numeric: tabular-nums;
}
.kpi b .u { font-size: 17px; font-weight: 700; margin-left: 2px; letter-spacing: 0; }
.kpi.accent b { color: var(--accent); }
.kpi .lbl { font-size: 13.5px; color: var(--ink-2); font-weight: 600; margin-top: 6px; }
.kpi .sub { font-size: 12px; color: var(--muted-2); margin-top: 2px; }

/* ---------------- 数据卡片组 ---------------- */
.cards { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-l);
  padding: 26px 26px 24px; box-shadow: var(--sh-1); position: relative; overflow: hidden;
  transition: .22s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--sh-2); border-color: #D6DEDA; }
.card-top {
  display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
}
.card-idx {
  width: 30px; height: 30px; border-radius: 9px; flex: none;
  background: var(--primary-soft); color: var(--primary);
  display: grid; place-items: center; font-weight: 800; font-size: 14px;
}
.card h3 { font-size: 18px; margin: 0; letter-spacing: -.2px; }
.card .tag-line { font-size: 12.5px; color: var(--muted-2); margin: -6px 0 14px; }

.card-6 { grid-column: span 6; }
.card-4 { grid-column: span 4; }
.card-12 { grid-column: span 12; }
.card-3 { grid-column: span 3; }

.card--dark {
  background: linear-gradient(150deg, #0F4A4F 0%, #123F44 60%, #1A3335 100%);
  border-color: transparent; color: #fff; box-shadow: var(--sh-3);
}
.card--dark .card-idx { background: rgba(255, 255, 255, .15); color: #fff; }
.card--dark h3 { color: #fff; }
.card--dark .card .tag-line, .card--dark .tag-line { color: rgba(255, 255, 255, .65); }
.card--dark .rank-row .rk-name { color: #EAF4F4; }
.card--dark .rank-row .rk-bar { background: rgba(255, 255, 255, .14); }
.card--dark .rank-row .rk-bar i { background: linear-gradient(90deg, #F0B26B, #BF5B22); }

.card--warn { background: #FFFBF6; border-color: #F0DCBE; }
.card--warn .card-idx { background: #FBEBD8; color: #9A6410; }

/* 卡片内元素 */
.dot-list { list-style: none; margin: 0; padding: 0; }
.dot-list li { position: relative; padding-left: 18px; margin-bottom: 10px; color: var(--ink-2); font-size: 14.3px; }
.dot-list li::before {
  content: ""; position: absolute; left: 0; top: .62em; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); opacity: .85;
}
.dot-list li b, .dot-list li strong { color: var(--ink); font-weight: 700; }
.dot-list--dark li { color: rgba(255, 255, 255, .86); }
.dot-list--dark li b { color: #fff; }
.dot-list--dark li::before { background: #F0B26B; }

.rank-row { display: flex; align-items: center; gap: 12px; margin-bottom: 11px; }
.rank-row .rk-no {
  width: 22px; height: 22px; border-radius: 6px; flex: none; font-size: 12px; font-weight: 800;
  display: grid; place-items: center; background: rgba(255, 255, 255, .16); color: #fff;
}
.rk-body { flex: 1; min-width: 0; }
.rk-name { font-size: 13.5px; font-weight: 600; color: var(--ink-2); display: flex; justify-content: space-between; gap: 10px; }
.rk-name em { font-style: normal; font-weight: 700; font-size: 13px; opacity: .95; }
.rk-bar { height: 8px; border-radius: 999px; background: var(--line-2); margin-top: 6px; overflow: hidden; }
.rk-bar i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, #2E8B91, #0F4A4F); }
.rk-bar i.is-up { background: linear-gradient(90deg, #E0685A, #B7301F); }
.rk-bar i.is-flat { background: linear-gradient(90deg, #B9C2C2, #8A9296); }

.mini-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 4px; }
.mini {
  border: 1px solid var(--line); border-radius: var(--r-m); padding: 16px; background: #FCFDFC;
  transition: .2s;
}
.mini:hover { border-color: #CFDAD5; background: #fff; }
.mini h4 { margin: 0 0 4px; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.mini .cnt { font-size: 12px; color: var(--muted-2); font-weight: 600; letter-spacing: .3px; margin-bottom: 8px; }
.mini p { margin: 0; font-size: 13.2px; color: var(--ink-2); line-height: 1.65; }
.mini .ico {
  width: 24px; height: 24px; border-radius: 7px; display: grid; place-items: center; flex: none;
  font-size: 13px; background: var(--primary-soft); color: var(--primary);
}
.verdict {
  margin-top: 14px; padding: 14px 16px; border-radius: var(--r-m);
  background: var(--accent-soft); border-left: 3px solid var(--accent);
  font-size: 14px; color: #6E3A14; font-weight: 600;
}
.card--dark .verdict { background: rgba(255, 255, 255, .1); border-left-color: #F0B26B; color: #FFE3C2; }

/* ---------------- 图表区 ---------------- */
.chart-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.chart-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-l);
  padding: 24px 26px; box-shadow: var(--sh-1);
}
.chart-card h3 { margin: 0 0 4px; font-size: 17px; }
.chart-card .cap { font-size: 12.5px; color: var(--muted-2); margin-bottom: 16px; }
.chart-note { font-size: 12px; color: var(--muted-2); margin-top: 12px; border-top: 1px dashed var(--line); padding-top: 10px; }

/* 梯队图 */
.tier { margin-bottom: 14px; }
.tier-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.tier-head .tt { font-size: 12.5px; font-weight: 700; letter-spacing: .4px; }
.tier-head .line { flex: 1; height: 1px; background: var(--line-2); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 13px; font-weight: 600; padding: 6px 13px; border-radius: 999px;
  background: var(--bg-soft); color: var(--ink-2); border: 1px solid var(--line);
}
.chip.t1 { background: var(--primary); color: #fff; border-color: var(--primary); }
.chip.t2 { background: #D9E8E9; color: #0E4449; border-color: #C2DADB; }
.chip.t3 { background: #EFF3F2; color: var(--ink-2); }
.chip.city { background: var(--accent-soft); color: #8A3F13; border-color: #EBD3BE; }
.chip small { opacity: .7; font-weight: 600; margin-left: 3px; }

/* 对比表 */
.tbl { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13.8px; }
.tbl th, .tbl td { padding: 11px 13px; text-align: left; border-bottom: 1px solid var(--line-2); vertical-align: top; }
.tbl thead th {
  background: var(--bg-soft); font-size: 13px; font-weight: 700; color: var(--ink-2);
  border-bottom: 1px solid var(--line); white-space: nowrap;
}
.tbl thead th:first-child { border-radius: var(--r-s) 0 0 0; }
.tbl thead th:last-child { border-radius: 0 var(--r-s) 0 0; }
.tbl tbody tr:hover { background: #FAFBF9; }
.tbl td strong { color: var(--primary); }

/* 表格横向滚动容器（2026-10-15）：
   窄屏下表格不再把整页撑宽，改为卡片内左右滑动查看。 */
.tbl-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; }
.tbl-hint { display: none; margin: 9px 0 0; font-size: 12.5px; color: var(--muted-2); }
@media (max-width: 900px) {
  .tbl-wrap .tbl { min-width: 700px; }
  .tbl-hint { display: block; }
}
.pill { display: inline-block; font-size: 12px; font-weight: 700; padding: 2px 9px; border-radius: 999px; }
.pill-up { background: var(--up-soft); color: var(--up); }
.pill-mid { background: #FDF3E3; color: #9A6410; }
.pill-flat { background: #EDF1F0; color: #5D6A6E; }

/* ---------------- 提示 / CTA / footer ---------------- */
.notice {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--accent);
  border-radius: var(--r-m); padding: 20px 24px; box-shadow: var(--sh-1);
}
.notice .ico { font-size: 22px; line-height: 1; }
.notice h4 { margin: 0 0 6px; font-size: 16px; }
.notice p { margin: 0; color: var(--ink-2); font-size: 14px; }

.cta-band {
  background: linear-gradient(135deg, #0F4A4F 0%, #10393D 55%, #2A3128 100%);
  border-radius: var(--r-l); padding: 42px 44px; color: #fff; display: flex;
  gap: 32px; align-items: center; justify-content: space-between; flex-wrap: wrap;
  box-shadow: var(--sh-3);
}
.cta-band h3 { margin: 0 0 8px; font-size: 24px; letter-spacing: -.4px; }
.cta-band p { margin: 0; color: rgba(255, 255, 255, .8); max-width: 620px; font-size: 14.5px; }

.foot { border-top: 1px solid var(--line); background: #FBFCFB; margin-top: 8px; }
.foot-in {
  max-width: var(--maxw); margin: 0 auto; padding: 30px 24px 40px;
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-size: 13px; color: var(--muted);
}
.foot-in a { color: var(--muted); }
.foot-in a:hover { color: var(--primary-2); }

/* ---------------- 案例库详情页 ---------------- */
.crumb { padding: 18px 0 0; font-size: 13px; color: var(--muted); }
.crumb a { color: var(--muted); }
.crumb span.sep { margin: 0 8px; color: var(--muted-2); }

.art-hero {
  background: linear-gradient(150deg, #0F4A4F 0%, #123C40 65%, #23312E 100%);
  color: #fff; border-radius: 0 0 var(--r-l) var(--r-l); padding: 46px 0 40px; position: relative; overflow: hidden;
}
.art-hero::after {
  content: ""; position: absolute; right: -80px; top: -80px; width: 340px; height: 340px; border-radius: 50%;
  background: radial-gradient(circle, rgba(191, 91, 34, .4) 0%, transparent 68%);
}
.art-hero .wrap { position: relative; z-index: 2; }
.art-hero h1 { font-size: 34px; line-height: 1.35; margin: 14px 0 14px; letter-spacing: -.8px; max-width: 900px; }
.art-hero .meta { font-size: 13px; color: rgba(255, 255, 255, .7); display: flex; gap: 18px; flex-wrap: wrap; }
.art-hero .desc { color: rgba(255, 255, 255, .82); font-size: 14.8px; max-width: 860px; margin: 0 0 18px; }

.art-layout {
  display: grid; grid-template-columns: 250px 1fr; gap: 40px; align-items: start;
  padding: 44px 0 70px;
}
.toc { position: sticky; top: 90px; }
.toc-in {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-m);
  padding: 18px 18px 14px; box-shadow: var(--sh-1);
}
.toc-in .toc-t {
  font-size: 12px; font-weight: 800; letter-spacing: 1.8px; color: var(--accent);
  text-transform: uppercase; margin-bottom: 12px;
}
.toc-in a {
  display: block; font-size: 13.8px; color: var(--ink-2); padding: 7px 10px;
  border-radius: 8px; border-left: 2px solid transparent; transition: .16s;
}
.toc-in a:hover { background: var(--bg-soft); border-left-color: var(--primary-2); color: var(--primary); }
.toc-in .toc-cta {
  display: block; margin-top: 14px; text-align: center; background: var(--accent); color: #fff;
  font-weight: 600; font-size: 13.5px; padding: 10px; border-radius: 9px; border-left: 0;
}
.toc-in .toc-cta:hover { background: #A84C1A; color: #fff; }

.art { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-l); padding: 44px 48px 50px; box-shadow: var(--sh-1); }
.art > *:first-child { margin-top: 0; }

.art h2 {
  font-size: 23px; margin: 46px 0 16px; padding-left: 14px; border-left: 4px solid var(--accent);
  line-height: 1.4; letter-spacing: -.3px;
}
.art h2:first-child { margin-top: 0; }
.art h3 { font-size: 17.5px; margin: 30px 0 10px; color: var(--primary); }
.art p { margin: 0 0 15px; color: var(--ink-2); }
.art ul { margin: 0 0 16px; padding-left: 0; list-style: none; }
.art ul li { position: relative; padding-left: 20px; margin-bottom: 10px; color: var(--ink-2); }
.art ul li::before {
  content: ""; position: absolute; left: 2px; top: .66em; width: 7px; height: 7px;
  border-radius: 2px; background: var(--accent); opacity: .8; transform: rotate(45deg);
}
.art strong { color: var(--ink); font-weight: 700; }
.art mark { background: #FDF0E2; color: #8A3F13; padding: 1px 6px; border-radius: 5px; font-weight: 600; }

.callout {
  background: var(--primary-soft); border-radius: var(--r-m); padding: 18px 22px;
  margin: 22px 0; border-left: 3px solid var(--primary-2);
}
.callout p { margin: 0; font-size: 14.2px; color: #0D3C40; }
.callout--warn { background: #FFFBF3; border-left-color: var(--gold); }
.callout--warn p { color: #6B4A0E; }

/* 配图 */
figure { margin: 26px 0; }
figure img { width: 100%; border-radius: var(--r-m); border: 1px solid var(--line); box-shadow: var(--sh-1); }
figcaption {
  font-size: 13px; color: var(--muted); margin-top: 10px; display: flex; gap: 10px;
  align-items: flex-start; line-height: 1.6;
}
figcaption .fc-no { color: var(--accent); font-weight: 700; flex: none; }
.fig-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.photo-slot {
  border: 2px dashed #D6CFC2; border-radius: var(--r-m); background: #FCFAF6;
  padding: 30px 24px; text-align: center;
}
.photo-slot .ps-t { font-size: 15px; font-weight: 700; margin-bottom: 6px; color: #8A6B3A; }
.photo-slot .ps-d { font-size: 13px; color: var(--muted); max-width: 560px; margin: 0 auto; }

/* 配图清单 */
.shot-list {
  background: var(--bg-soft); border-radius: var(--r-m); padding: 24px 26px; margin-top: 34px;
}
.shot-list h3 { margin: 0 0 14px; font-size: 16px; color: var(--primary); }
.shot-item { display: flex; gap: 14px; padding: 10px 0; border-bottom: 1px dashed #DCE2DE; font-size: 14px; }
.shot-item:last-child { border-bottom: 0; }
.shot-item .n {
  width: 24px; height: 24px; border-radius: 50%; flex: none; background: var(--card);
  border: 1px solid var(--line); display: grid; place-items: center; font-size: 12px; font-weight: 700; color: var(--accent);
}
.shot-item .t { color: var(--ink-2); }
.shot-item .t b { color: var(--ink); }

/* 分页 */
.pager { display: flex; gap: 16px; margin-top: 40px; }
.pager a {
  flex: 1; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-m);
  padding: 18px 20px; box-shadow: var(--sh-1); transition: .2s;
}
.pager a:hover { border-color: #CFDAD5; transform: translateY(-2px); box-shadow: var(--sh-2); }
.pager .pl { font-size: 12px; color: var(--muted-2); letter-spacing: .5px; }
.pager .pt { font-size: 15px; font-weight: 600; color: var(--ink); margin-top: 4px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .card-6, .card-4, .card-3 { grid-column: span 12; }
  .chart-grid { grid-template-columns: 1fr; }
  .art-layout { grid-template-columns: 1fr; gap: 26px; }
  .toc { position: static; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .kpi:nth-child(2) { border-right: 0; }
  .mini-grid { grid-template-columns: 1fr; }
  .fig-pair { grid-template-columns: 1fr; }
}
/* 导航窄屏收缩：900px 以下收起文字链接，只留「回主页 + 主 CTA」
   （2026-10-15 新增回主页按钮后重新分配导航空间，顺带修掉 768-1040px 换行溢出） */
@media (max-width: 1040px) {
  .nav-links { display: none; }
  .nav-in { gap: 14px; }
  .brand small { display: none; }
  .nav-actions { gap: 8px; }
  .nav-home { padding: 7px 12px; font-size: 13px; }
  .nav-cta { padding: 8px 14px; font-size: 13px; }
}
@media (max-width: 520px) {
  .brand > span:not(.brand-mark) { display: none; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .hero h1 { font-size: 30px; }
  .hero-in { padding: 48px 0 44px; }
  .sec { padding: 44px 0; }
  .art { padding: 26px 20px 32px; }
  .art h2 { font-size: 20px; }
  .cta-band { padding: 28px 24px; }
  .kpi b { font-size: 30px; }
}

/* ==========================================================================
   一级页 · 场景示意参考图（2026-10-15 新增）
   ========================================================================== */
.photo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.photo-grid figure {
  margin: 0; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-m); overflow: hidden; box-shadow: var(--sh-1);
}
.photo-grid img { width: 100%; height: 200px; object-fit: cover; display: block; border: 0; border-radius: 0; }
.photo-grid figcaption { padding: 12px 14px 14px; font-size: 13px; color: var(--muted); line-height: 1.55; }
.photo-grid figcaption .fc-no { margin-right: 6px; }
@media (max-width: 1024px) { .photo-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 720px) {
  .photo-grid { grid-template-columns: 1fr; }
  .photo-grid img { height: 180px; }
  .hero-bg::after {
    background:
      linear-gradient(158deg, rgba(7, 33, 36, .94) 0%, rgba(9, 39, 42, .86) 58%, rgba(11, 52, 56, .72) 100%),
      linear-gradient(115deg, rgba(15, 74, 79, .26) 0%, rgba(11, 52, 56, .18) 45%, rgba(191, 91, 34, .26) 130%);
  }
}

/* 导航最前面的「← 3A 案例库」返回主站入口（2026-10-15） */
.nav-links a.nav-back { color: var(--primary); background: var(--primary-soft); font-weight: 600; }
.nav-links a.nav-back:hover { background: var(--primary); color: #fff; }
.nav-back-m { display: none; }
@media (max-width: 1040px) { .nav-back-m { display: inline-flex; } }

/* 导航排版：加了「← 3A 案例库」后，窄一点的屏先收英文副标题，保证导航单行不换行（2026-10-15） */
.nav-links a { white-space: nowrap; }
@media (max-width: 1500px) {
  .brand small { display: none; }
  .nav-in { gap: 16px; }
  .nav-links a { padding: 8px 11px; }
  .nav-cta { padding: 9px 15px; }
}


/* 小屏（≤520px）导航收紧，避免三个按钮把页面撑出横向滚动（2026-10-15） */
@media (max-width: 520px) {
  .nav-in { padding: 0 12px; gap: 8px; }
  .nav-actions { gap: 6px; }
  .nav-home { padding: 7px 9px; font-size: 12.5px; }
  .nav-cta { padding: 7px 11px; font-size: 12.5px; }
}

/* 导航项不许被挤到 0 宽（1024 一带会把「← 3A 案例库」压没），并给紧的区间再收一档 */
.nav-links a { flex: none; }
@media (max-width: 1180px) {
  .nav-in { gap: 12px; }
  .nav-links { gap: 2px; }
  .nav-links a { padding: 8px 9px; font-size: 13px; }
  .nav-actions .nav-home { padding: 7px 11px; font-size: 13px; }
  .nav-cta { padding: 8px 12px; font-size: 13px; }
}

/* 窄屏导航收缩（2026-10-15 补丁，放在文件末尾以确保优先级最高）：
   ≤1040px 收起文字链接后，「3A 案例库 + 回主页 + 主 CTA」三个按钮并排需要在窄屏再收一档，
   否则 360-390px 会把页面撑出横向滚动条。 */
@media (max-width: 1040px) {
  .nav-back-m { display: inline-flex; }
}
@media (max-width: 560px) {
  .nav-actions { gap: 6px; }
  .nav-actions .nav-home, .nav-actions .nav-cta { padding: 6px 9px; font-size: 12px; }
  .nav-actions .nav-home::before { opacity: .7; }
}

/* 右侧按钮不许被压成 0 宽（360px 一带会把「3A 案例库」挤没）；
   ≤380px 只留「3A 案例库 ＋ 返回市场洞察」，把「回主页」收起 */
.nav-actions > a { flex: 0 0 auto; }
@media (max-width: 380px) {
  .nav-actions .nav-home:not(.nav-back-m) { display: none; }
}

/* 超窄屏（≤400px）：iPhone SE/mini 等 375px 机型上三按钮同屏 ——
   把品牌图标缩小让位，确保「回主页」不被隐藏（2026-10-15 最终优先级） */
@media (max-width: 400px) {
  .nav-actions .nav-home:not(.nav-back-m) { display: inline-flex; }
  .nav-actions .nav-back-m { display: inline-flex; }
  .nav-in { gap: 10px; }
  .brand-mark { width: 28px; height: 28px; border-radius: 8px; font-size: 13px; }
  .nav-actions { gap: 5px; }
  .nav-actions .nav-home, .nav-actions .nav-cta { padding: 5px 8px; font-size: 11.5px; }
}
@media (max-width: 340px) {
  .brand-mark { display: none; }
}