/* ============================================================
   毛泽东思想与现代经营 · 站点样式
   浅色主题 / 中式典正风格
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
  /* 主色：墨绿（制度、根基） / 绛红（革命、动力） / 鎏金（成果、收获） */
  --ink:        #1B4332;
  --ink-2:      #2D6A4F;
  --ink-3:      #52796F;
  --red:        #B3261E;
  --red-deep:   #8B0000;
  --red-soft:   #C0392B;
  --gold:       #B8862F;
  --gold-light: #E0B96A;

  --bg:         #FAF8F3;
  --bg-2:       #F4F1E8;
  --surface:    #FFFFFF;
  --text:       #2A2724;
  --text-2:     #5C5751;
  --text-3:     #8A8378;
  --border:     #E6E0D3;
  --border-2:   #D6CEBD;

  --shadow-sm: 0 1px 3px rgba(27,67,50,.06), 0 1px 2px rgba(0,0,0,.03);
  --shadow:    0 4px 20px rgba(27,67,50,.08);
  --shadow-lg: 0 12px 40px rgba(27,67,50,.12);

  --radius:    14px;
  --radius-sm: 9px;
  --maxw:      1220px;

  --serif: 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'SimSun', Georgia, serif;
  --sans:  'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 92px; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.85;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(circle at 12% 8%, rgba(184,134,47,.045) 0%, transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(139,0,0,.035) 0%, transparent 45%);
  background-attachment: fixed;
}

h1,h2,h3,h4,h5 { font-family: var(--serif); color: var(--ink); line-height:1.45; font-weight:700; }
p { margin-bottom: .9em; }
a { color: var(--red); text-decoration:none; transition: color .2s; }
a:hover { color: var(--red-deep); }
strong { font-weight: 700; color: var(--red-deep); }
em { font-style: normal; color: var(--gold); font-weight: 600; }
ul, ol { padding-left: 1.4em; margin-bottom: .9em; }
li { margin-bottom: .45em; }

/* ============ 阅读进度条 ============ */
#progress {
  position: fixed; top:0; left:0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--red-deep), var(--gold));
  z-index: 999; transition: width .1s linear;
}

/* ============ 顶栏 ============ */
.site-header {
  position: sticky; top:0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.site-header .inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 26px;
  height: 68px; display:flex; align-items:center; gap: 28px;
}
.brand { display:flex; align-items:center; gap: 12px; flex-shrink:0; }
.brand .seal {
  width: 38px; height: 38px; border-radius: 8px; flex-shrink:0;
  background: linear-gradient(140deg, var(--red-deep), var(--red-soft));
  color:#fff; font-family: var(--serif); font-weight:900; font-size: 19px;
  display:flex; align-items:center; justify-content:center;
  box-shadow: 0 2px 8px rgba(139,0,0,.28); letter-spacing: -1px;
}
.brand-txt { display:flex; flex-direction:column; line-height:1.25; }
.brand-txt b { font-family: var(--serif); font-size:16.5px; color: var(--ink); letter-spacing:2px; }
.brand-txt span { font-size:11px; color: var(--text-3); letter-spacing:1.4px; }

.main-nav { display:flex; gap: 4px; margin-left:auto; }
.main-nav a {
  padding: 8px 15px; border-radius: 8px; font-size: 14.5px;
  color: var(--text-2); font-weight:500; position:relative; transition: all .2s;
}
.main-nav a:hover { background: var(--bg-2); color: var(--ink); }
.main-nav a.active { color:#fff; background: var(--ink); }
.main-nav a.active:hover { color:#fff; }

.nav-toggle { display:none; margin-left:auto; background:none; border:1px solid var(--border-2);
  border-radius:8px; padding: 7px 12px; cursor:pointer; font-size:14px; color: var(--ink); }

/* ---- 二级下拉：合并后的导航分组 ---- */
.nav-group { position: relative; }
.nav-group > .nav-trigger { display:inline-flex; align-items:center; gap:5px; }
.caret { width:0; height:0; border-left:4px solid transparent; border-right:4px solid transparent;
  border-top:5px solid currentColor; opacity:.5; transform: translateY(2px); transition: transform .2s; }
.nav-group:hover .caret { transform: translateY(1px) rotate(180deg); opacity:.85; }
.nav-drop {
  position:absolute; top:calc(100% + 9px); left:0; min-width:200px; padding:7px;
  background: var(--surface); border:1px solid var(--border); border-radius:12px;
  box-shadow: var(--shadow-lg); display:flex; flex-direction:column; gap:2px; z-index:70;
  opacity:0; visibility:hidden; transform: translateY(-6px); transition: all .18s ease;
}
.nav-group:hover > .nav-drop, .nav-group:focus-within > .nav-drop { opacity:1; visibility:visible; transform: translateY(0); }
.nav-drop a { padding:9px 12px; border-radius:8px; font-size:13.8px; color: var(--text-2);
  white-space:nowrap; line-height:1.45; }
.nav-drop a:hover { background: var(--bg-2); color: var(--ink); }
.nav-drop a.on { background: var(--ink); color:#fff; }
.nav-drop a.on:hover { color:#fff; }
.nav-group > .nav-trigger.active { color:#fff; background: var(--ink); }
.nav-group > .nav-trigger.active:hover { color:#fff; }

/* ============ 布局 ============ */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 26px; }
.layout {
  max-width: var(--maxw); margin: 0 auto; padding: 34px 26px 80px;
  display: grid; grid-template-columns: 232px minmax(0,1fr); gap: 42px; align-items:start;
}

/* ============ 侧边目录 ============ */
.toc { position: sticky; top: 92px; max-height: calc(100vh - 118px); overflow-y:auto; padding-right: 4px; }
.toc::-webkit-scrollbar { width:4px; } .toc::-webkit-scrollbar-thumb{ background:var(--border-2); border-radius:4px; }
.toc h5 {
  font-size: 11.5px; letter-spacing: 2.5px; color: var(--text-3);
  text-transform: uppercase; margin-bottom: 12px; font-family: var(--sans); font-weight:700;
}
.toc ol { list-style:none; padding:0; margin:0; border-left: 2px solid var(--border); }
.toc li { margin:0; }
.toc a {
  display:block; padding: 7px 12px; font-size: 13.2px; color: var(--text-2);
  border-left: 2px solid transparent; margin-left:-2px; line-height:1.55;
}
.toc a:hover { color: var(--red-deep); background: rgba(184,134,47,.06); }
.toc a.on { color: var(--red-deep); border-left-color: var(--red); font-weight:600; background: rgba(139,0,0,.045); }
.toc .num { color: var(--gold); font-family: var(--serif); margin-right:6px; font-weight:700; }

/* ============ 通用区块 ============ */
.section { margin-bottom: 54px; scroll-margin-top: 92px; }
.sec-head { margin-bottom: 24px; padding-bottom: 14px; border-bottom: 2px solid var(--red); }
.sec-eyebrow {
  font-family: var(--sans); font-size:11.5px; letter-spacing:3px; color: var(--red);
  font-weight:700; margin-bottom: 8px; text-transform: uppercase;
}
.sec-head h2 { font-size: 30px; letter-spacing: 2px; color: var(--red-deep); }
.sec-head .lede { font-size: 15px; color: var(--text-2); margin-top: 8px; }

h3.blk { font-size: 20.5px; margin: 34px 0 14px; color: var(--ink);
  padding-left: 12px; border-left: 3px solid var(--gold); }
h4.sub { font-size: 16.5px; margin: 22px 0 10px; color: var(--red-deep); }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px 28px; box-shadow: var(--shadow-sm);
}
.card + .card { margin-top: 18px; }

.grid { display:grid; gap: 18px; }
.g2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0,1fr)); }

/* ============ 引文 / 提示块 ============ */
.quote {
  background: linear-gradient(135deg, rgba(139,0,0,.045), rgba(184,134,47,.05));
  border-left: 4px solid var(--red); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px 24px; margin: 18px 0; font-family: var(--serif);
  font-size: 16.5px; line-height: 2.05; color: var(--red-deep);
}
.quote .src { display:block; margin-top: 10px; font-family: var(--sans);
  font-size: 12.5px; color: var(--text-3); font-weight:500; letter-spacing:.5px; }

.callout { padding: 16px 20px; border-radius: var(--radius-sm); margin: 16px 0; font-size: 14.5px; line-height:1.9; }
.callout.red   { background: rgba(139,0,0,.045); border-left: 4px solid var(--red); }
.callout.gold  { background: rgba(184,134,47,.075); border-left: 4px solid var(--gold); }
.callout.green { background: rgba(45,106,79,.06);   border-left: 4px solid var(--ink-2); }
.callout.gray  { background: var(--bg-2);           border-left: 4px solid var(--border-2); }
.callout b.t { display:block; font-family: var(--serif); font-size:15px; margin-bottom:6px; }
.callout.red b.t { color: var(--red-deep); }
.callout.gold b.t { color: var(--gold); }
.callout.green b.t { color: var(--ink); }

/* ============ 表格 ============ */
.tbl-wrap { overflow-x:auto; margin: 18px 0; border:1px solid var(--border);
  border-radius: var(--radius-sm); background: var(--surface); box-shadow: var(--shadow-sm); }
table { width:100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
thead th {
  background: var(--ink); color:#fff; padding: 13px 15px; text-align:left;
  font-family: var(--serif); font-weight:600; font-size: 13.5px; letter-spacing:.6px; white-space:nowrap;
}
tbody td { padding: 12px 15px; border-bottom: 1px solid var(--border); vertical-align: top; line-height:1.75; }
tbody tr:nth-child(even) { background: rgba(244,241,232,.55); }
tbody tr:hover { background: rgba(184,134,47,.075); }
tbody td:first-child { font-weight:600; color: var(--ink); white-space:nowrap; }
table caption { caption-side: bottom; padding: 10px; font-size:12.5px; color: var(--text-3); text-align:left; }

/* ============ 标签 ============ */
.tag { display:inline-block; padding: 2px 9px; border-radius: 20px; font-size:11.5px;
  font-weight:600; letter-spacing:.4px; white-space:nowrap; }
.tag.red  { background: rgba(139,0,0,.09);  color: var(--red-deep); }
.tag.gold { background: rgba(184,134,47,.14); color: #8A6416; }
.tag.green{ background: rgba(45,106,79,.1);  color: var(--ink-2); }
.tag.gray { background: var(--bg-2); color: var(--text-2); }

/* ============ 指标块 ============ */
.metrics { display:grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap:14px; margin: 22px 0; }
.metric {
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px 16px; text-align:center; box-shadow: var(--shadow-sm); position:relative; overflow:hidden;
}
.metric::after { content:''; position:absolute; left:0; top:0; width:100%; height:3px;
  background: linear-gradient(90deg, var(--gold-light), var(--gold)); }
.metric .v { font-family: var(--serif); font-size: 27px; font-weight:900; color: var(--red-deep);
  line-height:1.2; letter-spacing:-.5px; }
.metric .v small { font-size: 14px; font-weight:600; color: var(--text-2); font-family: var(--sans); }
.metric .k { font-size: 12.5px; color: var(--text-2); margin-top: 5px; }
.metric.green::after { background: linear-gradient(90deg, var(--ink-3), var(--ink-2)); }
.metric.green .v { color: var(--ink); }

/* ============ 时间轴 ============ */
.timeline { position:relative; padding-left: 34px; margin: 24px 0; }
.timeline::before { content:''; position:absolute; left:11px; top:6px; bottom:6px; width:2px;
  background: linear-gradient(180deg, var(--gold-light), var(--red), var(--ink-2)); }
.tl-item { position:relative; margin-bottom: 26px; }
.tl-item::before { content:''; position:absolute; left:-28px; top:7px; width:13px; height:13px;
  border-radius:50%; background: var(--red); border:3px solid var(--bg);
  box-shadow: 0 0 0 2px var(--red); }
.tl-item .tl-time { font-size:12.5px; font-weight:700; color: var(--gold); letter-spacing:1px; margin-bottom:3px; }
.tl-item h4 { font-size:17.5px; color: var(--red-deep); margin-bottom:6px; }
.tl-item p { font-size:14.5px; color: var(--text-2); }

/* ============ 首页 Hero ============ */
.hero {
  position:relative; overflow:hidden; color:#fff; padding: 96px 0 84px; margin-bottom: 0;
  background:
    linear-gradient(115deg, rgba(20,20,20,.93) 0%, rgba(90,16,12,.9) 45%, rgba(139,0,0,.86) 100%),
    repeating-linear-gradient(45deg, rgba(255,255,255,.022) 0 2px, transparent 2px 9px);
}
.hero .wrap { position:relative; z-index:2; }
.hero .eyebrow { font-size:12.5px; letter-spacing:6px; color: var(--gold-light); margin-bottom: 20px; font-weight:500; }
.hero h1 { color:#fff; font-size: 52px; font-weight:900; letter-spacing: 5px;
  line-height:1.35; margin-bottom: 18px; }
.hero h1 .hl { color: var(--gold-light); }
.hero .sub { font-size: 17px; color: rgba(255,255,255,.82); max-width: 760px; line-height:2; font-weight:300; }
.hero .verdict {
  margin-top: 30px; padding: 18px 24px; border-left: 3px solid var(--gold);
  background: rgba(255,255,255,.07); border-radius: 0 10px 10px 0; max-width: 800px;
  font-family: var(--serif); font-size: 17px; line-height: 2; color:#fff;
}
.hero-metrics { display:flex; gap: 40px; margin-top: 38px; flex-wrap:wrap; }
.hero-metrics div b { display:block; font-family: var(--serif); font-size: 30px; font-weight:900; color: var(--gold-light); }
.hero-metrics div span { font-size:12.5px; color: rgba(255,255,255,.62); letter-spacing:1px; }
.hero-deco {
  position:absolute; right:-90px; top:-40px; font-family: var(--serif); font-size: 340px;
  font-weight:900; color: rgba(255,255,255,.045); line-height:1; pointer-events:none; z-index:1;
}

/* ============ 入口卡片 ============ */
.entry { display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; margin-top:-46px; position:relative; z-index:5; }
.entry-card {
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 26px 24px 24px; box-shadow: var(--shadow); transition: all .28s cubic-bezier(.2,.7,.3,1);
  display:flex; flex-direction:column; position:relative; overflow:hidden;
}
.entry-card::before { content:''; position:absolute; left:0; top:0; height:4px; width:100%;
  background: var(--c, var(--red)); transition: height .25s; }
.entry-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.entry-card:hover::before { height:6px; }
.entry-card .idx { font-family: var(--serif); font-size: 38px; font-weight:900; color: var(--c, var(--red));
  opacity:.2; line-height:1; margin-bottom:6px; }
.entry-card h3 { font-size: 22px; margin-bottom: 6px; letter-spacing:1.5px; }
.entry-card .en { font-size:11px; letter-spacing:2.5px; color: var(--text-3); margin-bottom:14px; text-transform:uppercase; }
.entry-card p { font-size: 14px; color: var(--text-2); flex-grow:1; margin-bottom: 16px; }
.entry-card ul { font-size:13.2px; color: var(--text-2); padding-left:1.1em; margin-bottom:18px; }
.entry-card ul li { margin-bottom:3px; }
.entry-card .go { font-size: 13.5px; font-weight:700; color: var(--c, var(--red)); letter-spacing:1px; }
.entry-card .go::after { content:' →'; transition: margin .2s; }
.entry-card:hover .go::after { margin-left:5px; }

/* ============ 三层架构图 ============ */
.stack { display:flex; flex-direction:column; gap: 10px; margin: 22px 0; }
.stack-layer {
  border-radius: var(--radius-sm); padding: 18px 22px; border:1px solid var(--border-2);
  background: var(--surface); position:relative; box-shadow: var(--shadow-sm);
}
.stack-layer:nth-child(1) { background: linear-gradient(100deg,#FBF6EA,#F7EFDC); border-color: var(--gold-light); }
.stack-layer:nth-child(2) { background: linear-gradient(100deg,#FBEEEC,#F8E4E1); border-color: #E3B7B2; }
.stack-layer:nth-child(3) { background: linear-gradient(100deg,#EDF3EE,#E2EDE6); border-color: #B6CFBF; }
.stack-layer .lv { font-size:11.5px; letter-spacing:2.5px; font-weight:700; margin-bottom:6px; }
.stack-layer:nth-child(1) .lv { color:#8A6416; }
.stack-layer:nth-child(2) .lv { color: var(--red-deep); }
.stack-layer:nth-child(3) .lv { color: var(--ink); }
.stack-layer h4 { font-size: 17px; margin-bottom:8px; }
.stack-layer p { font-size: 13.8px; color: var(--text-2); margin:0; }
.stack-arrow { text-align:center; color: var(--text-3); font-size: 17px; line-height:1; margin:-4px 0; }

/* ============ 方法卡片 ============ */
.method { background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 30px 32px; box-shadow: var(--shadow-sm); margin-bottom: 22px; scroll-margin-top:92px; }
.method-head { display:flex; align-items:flex-start; gap:16px; padding-bottom:16px; margin-bottom:18px;
  border-bottom: 2px solid var(--gold-light); }
.method-no { flex-shrink:0; width:46px; height:46px; border-radius:10px;
  background: linear-gradient(140deg, var(--red-deep), var(--red-soft)); color:#fff;
  font-family: var(--serif); font-size:19px; font-weight:900;
  display:flex; align-items:center; justify-content:center; box-shadow: 0 3px 10px rgba(139,0,0,.24); }
.method-head h3 { font-size: 24px; letter-spacing:2px; color: var(--red-deep); }
.method-head .meta { font-size:12.5px; color: var(--text-3); margin-top:3px; letter-spacing:.6px; }

.two-col { display:grid; grid-template-columns: 1fr 1fr; gap:16px; }
.box { border:1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; background: var(--bg-2); }
.box.biz { background: rgba(27,67,50,.035); border-color:#C9DCD1; }
.box.per { background: rgba(184,134,47,.05); border-color:#E8D5AC; }
.box.warn{ background: rgba(139,0,0,.04); border-color:#E7C4C0; }
.box h5 { font-family: var(--sans); font-size:12.5px; letter-spacing:2px; font-weight:700;
  margin-bottom:9px; text-transform:uppercase; }
.box.biz h5 { color: var(--ink-2); }
.box.per h5 { color: #8A6416; }
.box.warn h5 { color: var(--red-deep); }
.box ul { font-size: 14px; padding-left:1.15em; margin-bottom:0; }
.box li { margin-bottom:7px; color: var(--text); }
.box li b { color: var(--ink); }

/* ============ 案例 ============ */
.case-tabs { display:flex; gap:10px; flex-wrap:wrap; margin-bottom: 24px; }
.case-tab {
  padding: 11px 22px; border-radius: 999px; border:1px solid var(--border-2);
  background: var(--surface); cursor:pointer; font-family: var(--serif); font-size:15.5px;
  font-weight:600; color: var(--text-2); transition: all .22s; letter-spacing:1px;
}
.case-tab:hover { border-color: var(--gold); color: var(--ink); }
.case-tab.on { background: var(--ink); border-color: var(--ink); color:#fff; box-shadow: var(--shadow); }
.case-panel { display:none; animation: fade .35s ease; }
.case-panel.on { display:block; }
@keyframes fade { from { opacity:0; transform: translateY(10px);} to { opacity:1; transform:none;} }

.case-hero {
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  overflow:hidden; box-shadow: var(--shadow); margin-bottom: 22px;
}
.case-hero .ch-top { padding: 26px 30px; border-bottom:1px solid var(--border);
  background: linear-gradient(100deg, rgba(27,67,50,.05), rgba(184,134,47,.05)); }
.case-hero .ch-top h3 { font-size: 27px; letter-spacing:2px; }
.case-hero .ch-top .tagline { font-size:15px; color: var(--text-2); margin-top:6px; }
.case-hero .ch-body { padding: 24px 30px; }
.ch-situation { display:grid; grid-template-columns: 1fr 1fr; gap:0; border:1px solid var(--border);
  border-radius: var(--radius-sm); overflow:hidden; }
.ch-situation > div { padding: 16px 20px; }
.ch-situation > div:first-child { background: rgba(139,0,0,.04); border-right:1px solid var(--border); }
.ch-situation h5 { font-size:12.5px; letter-spacing:2px; margin-bottom:8px; font-family:var(--sans); }
.ch-situation > div:first-child h5 { color: var(--red-deep); }
.ch-situation > div:last-child { background: rgba(45,106,79,.04); }
.ch-situation > div:last-child h5 { color: var(--ink); }
.ch-situation p { font-size:14px; margin:0; color: var(--text-2); }

.map-row { display:grid; grid-template-columns: 150px 1fr 1fr; gap:0; border:1px solid var(--border);
  border-radius: var(--radius-sm); overflow:hidden; margin-bottom:12px; background: var(--surface); }
.map-row > div { padding: 14px 18px; border-right:1px solid var(--border); }
.map-row > div:last-child { border-right:none; }
.map-row > div:first-child { background: rgba(139,0,0,.045); }
.map-row .mf { font-family: var(--serif); font-size:15.5px; font-weight:700; color: var(--red-deep); }
.map-row .verify { font-size:12px; color: var(--text-3); margin-top:4px; }
.map-row .act { font-size: 14px; color: var(--text); }
.map-row .res { font-size: 13.5px; color: var(--text-2); }
.map-row .res b { color: var(--ink); }

/* ============ 路线图 ============ */
.road { position:relative; }
.road-stage {
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 24px 26px; margin-bottom: 18px; box-shadow: var(--shadow-sm);
  border-left: 5px solid var(--gold); position:relative;
}
.road-stage.s1 { border-left-color: var(--red); }
.road-stage.s2 { border-left-color: #C9722A; }
.road-stage.s3 { border-left-color: var(--gold); }
.road-stage.s4 { border-left-color: var(--ink-3); }
.road-stage.s5 { border-left-color: var(--ink); }
.road-stage .rs-head { display:flex; align-items:baseline; gap:14px; flex-wrap:wrap; margin-bottom:6px; }
.road-stage h4 { font-size: 20.5px; color: var(--red-deep); letter-spacing:1.5px; }
.road-stage .when { font-size:12.5px; color: var(--gold); font-weight:700; letter-spacing:1px; }
.road-stage .aim { font-size:14px; color: var(--text-2); margin-bottom: 14px; }
.road-stage .aim b { color: var(--ink); }
.rs-grid { display:grid; grid-template-columns: 1fr 1fr; gap:14px; margin-top:12px; }
.rs-box { border:1px solid var(--border); border-radius: var(--radius-sm); padding: 13px 16px; background: var(--bg-2); }
.rs-box.full { grid-column: 1 / -1; }
.rs-box h6 { font-family: var(--sans); font-size:12px; letter-spacing:1.8px; font-weight:700;
  color: var(--text-3); margin-bottom:8px; text-transform:uppercase; }
.rs-box ul { font-size:13.8px; padding-left:1.1em; margin:0; }
.rs-box li { margin-bottom:5px; }

/* ============ 交互工具 ============ */
.tool {
  background: linear-gradient(135deg, rgba(27,67,50,.035), rgba(184,134,47,.05));
  border:1px solid var(--border-2); border-radius: var(--radius); padding: 26px 28px; margin: 24px 0;
  box-shadow: var(--shadow-sm);
}
.tool-head { display:flex; align-items:center; gap:12px; margin-bottom:6px; }
.tool-head .dot { width:9px; height:9px; border-radius:50%; background: var(--red); }
.tool-head h4 { font-size: 19px; color: var(--ink); letter-spacing:1px; }
.tool-note { font-size:13px; color: var(--text-2); margin-bottom: 18px; }
.tool-form { display:grid; grid-template-columns: repeat(auto-fit, minmax(155px,1fr)); gap: 14px; margin-bottom: 16px; }
.field label { display:block; font-size:12.5px; font-weight:600; color: var(--text-2); margin-bottom:5px; letter-spacing:.5px; }
.field input, .field select {
  width:100%; padding: 9px 12px; border:1px solid var(--border-2); border-radius: 8px;
  font-size: 14.5px; font-family: var(--sans); background: var(--surface); color: var(--text); outline:none;
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(184,134,47,.14); }
.btn {
  padding: 10px 22px; border:none; border-radius: 8px; cursor:pointer; font-size: 14.5px;
  font-weight:600; font-family: var(--sans); letter-spacing:1px; transition: all .2s;
  background: var(--ink); color:#fff;
}
.btn:hover { background: var(--ink-2); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn.red { background: var(--red-deep); } .btn.red:hover { background: var(--red); }

.check-list { list-style:none; padding:0; margin: 4px 0 16px; }
.check-list li { margin-bottom:2px; }
.check-list label {
  display:flex; gap:10px; align-items:flex-start; padding: 9px 12px; border-radius: 8px;
  cursor:pointer; font-size: 14.2px; line-height:1.7; transition: background .18s; border:1px solid transparent;
}
.check-list label:hover { background: rgba(255,255,255,.75); border-color: var(--border); }
.check-list input { margin-top: 5px; accent-color: var(--red); width:15px; height:15px; flex-shrink:0; cursor:pointer; }

.result { background: var(--surface); border:1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px 20px; margin-top: 14px; display:none; animation: fade .3s ease; }
.result.show { display:block; }
.result h5 { font-family: var(--serif); font-size:16.5px; color: var(--red-deep); margin-bottom:10px; }
.result p { font-size:14.3px; color: var(--text-2); margin-bottom:8px; }
.result .score { font-family: var(--serif); font-size: 26px; font-weight:900; color: var(--ink); }
.result .bar { height:8px; border-radius:4px; background: var(--border); overflow:hidden; margin:10px 0 14px; }
.result .bar i { display:block; height:100%; background: linear-gradient(90deg, var(--red-soft), var(--gold));
  width:0; transition: width .6s cubic-bezier(.2,.7,.3,1); }
.result .gap { display:grid; grid-template-columns: repeat(auto-fit,minmax(130px,1fr)); gap:10px; margin-top:12px; }
.result .gap > div { background: var(--bg-2); border:1px solid var(--border); border-radius:8px; padding:10px 12px; }
.result .gap b { display:block; font-family: var(--serif); font-size:17px; color: var(--red-deep); }
.result .gap span { font-size:12px; color: var(--text-2); }

/* ============ 清单 / 步骤 ============ */
.steps { counter-reset: s; list-style:none; padding:0; }
.steps li { counter-increment: s; position:relative; padding-left: 42px; margin-bottom: 14px; font-size:14.5px; }
.steps li::before { content: counter(s); position:absolute; left:0; top:1px; width:27px; height:27px;
  border-radius:8px; background: var(--ink); color:#fff; font-family: var(--serif); font-weight:700;
  font-size:14px; display:flex; align-items:center; justify-content:center; }

.wk-grid { display:grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap:14px; }
.wk { background: var(--surface); border:1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px 16px; box-shadow: var(--shadow-sm); }
.wk h6 { font-family: var(--serif); font-size:15.5px; color: var(--red-deep); margin-bottom:4px; }
.wk .wk-t { font-size:11.5px; color: var(--gold); font-weight:700; letter-spacing:1px; margin-bottom:10px; }
.wk ul { list-style:none; padding:0; margin:0; font-size:13.2px; color: var(--text-2); }
.wk ul li { padding-left: 18px; position:relative; margin-bottom:6px; line-height:1.6; }
.wk ul li::before { content:'✓'; position:absolute; left:0; color: var(--ink-3); font-size:11.5px; }

/* ============ 结论 / footer ============ */
.verdict-box {
  background: linear-gradient(120deg, var(--ink) 0%, #123527 55%, #4A1420 100%);
  color:#fff; border-radius: var(--radius); padding: 40px 42px; margin: 30px 0;
  box-shadow: var(--shadow-lg); position:relative; overflow:hidden;
}
.verdict-box::before { content:''; position:absolute; right:-60px; bottom:-70px; width:220px; height:220px;
  border-radius:50%; background: rgba(184,134,47,.12); }
.verdict-box h3 { color: var(--gold-light); font-size: 24px; letter-spacing:2px; margin-bottom: 14px; }
.verdict-box p { color: rgba(255,255,255,.86); font-size:15.5px; line-height:2.1; position:relative; z-index:2; }
.verdict-box strong { color: var(--gold-light); }

.site-footer { background:#1C1A17; color: rgba(255,255,255,.55); padding: 46px 0 34px; font-size:13.5px; }
.site-footer .wrap { display:flex; justify-content:space-between; gap:24px; flex-wrap:wrap; align-items:flex-start; }
.site-footer .motto { font-family: var(--serif); font-size:20px; color: var(--gold-light);
  letter-spacing:4px; margin-bottom:10px; }
.site-footer a { color: rgba(255,255,255,.72); }
.site-footer a:hover { color: var(--gold-light); }
.site-footer .fnav { display:flex; gap:16px; flex-wrap:wrap; align-items:center; }
.site-footer .fnav .fnav-g { color: var(--gold-light); font-size:12px; letter-spacing:1.2px; opacity:.85; }
.site-footer .fnav .fnav-g ~ a { margin-left:-6px; }
.site-footer .disc { font-size:12px; opacity:.65; max-width: 640px; line-height:1.9; }

.back-top { position: fixed; right: 22px; bottom: 26px; width:44px; height:44px; border-radius:50%;
  background: var(--ink); color:#fff; border:none; cursor:pointer; font-size:17px; box-shadow: var(--shadow);
  opacity:0; pointer-events:none; transition: all .25s; z-index:80; }
.back-top.on { opacity:1; pointer-events:auto; }
.back-top:hover { background: var(--red-deep); transform: translateY(-3px); }

/* ============ 响应式 ============ */
/* 导航已合并为 5 个分组，中等屏只做轻微压缩 */
@media (max-width: 1320px) {
  .site-header .inner { gap: 14px; padding: 0 18px; }
  .main-nav { gap: 2px; }
  .main-nav a { padding: 8px 11px; font-size: 14px; }
  .brand-txt span { display: none; }
}
@media (max-width: 1080px) {
  .layout { grid-template-columns: 1fr; gap:0; padding-top:24px; }
  .toc { display:none; }
  .main-nav { display:none; }
  .nav-toggle { display:block; }
  .main-nav.open { display:flex; position:absolute; top:68px; left:0; right:0; flex-direction:column;
    background:#fff; border-bottom:1px solid var(--border); padding:10px 20px 16px; box-shadow: var(--shadow); }
  /* 移动端抽屉内：二级菜单直接展开，不做悬浮 */
  .nav-group { display:flex; flex-direction:column; }
  .nav-drop { position:static; opacity:1; visibility:visible; transform:none; box-shadow:none;
    background: var(--bg-2); border:1px solid var(--border); min-width:0; margin:2px 0 8px; padding:5px 8px; }
  .nav-drop a { white-space:normal; font-size:13.6px; }
  .caret { display:none; }
  .hero h1 { font-size: 38px; letter-spacing:3px; }
  .entry { grid-template-columns: 1fr; margin-top: 20px; }
  .metrics, .wk-grid, .g4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .g3, .two-col, .rs-grid, .ch-situation { grid-template-columns: 1fr; }
  .map-row { grid-template-columns: 1fr; }
  .map-row > div { border-right:none; border-bottom:1px solid var(--border); }
  .method { padding: 22px 20px; }
  .hero-deco { display:none; }
}
@media (max-width: 620px) {
  .wrap, .layout { padding-left:16px; padding-right:16px; }
  .hero { padding: 62px 0 54px; }
  .hero h1 { font-size: 29px; letter-spacing:1.5px; }
  .hero-metrics { gap:24px; }
  .hero-metrics div b { font-size:23px; }
  .metrics, .wk-grid, .g4, .g2 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .sec-head h2 { font-size: 24px; }
  .verdict-box { padding: 26px 20px; }
  .method { padding: 18px 16px; }
  .method-head { gap:11px; }
  .method-head h3 { font-size: 20px; }
  .case-hero .ch-top, .case-hero .ch-body { padding: 20px; }
}