/* ============================================================
   吉利汽车集团官方二手车帅车中心 · 全站样式 v3（品牌化改版）
   核心：深蓝首屏 + 白卡浮起 + 大数字 + 装饰几何 + 分区节奏
   ============================================================ */
:root{
  --paper:#eef1f6;
  --paper-2:#e2e7ef;
  --card:#ffffff;
  --ink:#10151f;
  --soft:#45505f;
  --faint:#8a94a6;
  --line:#dde3ec;
  --line-2:#c8d1de;
  --blue:#0b3d91;
  --blue-2:#1456b8;
  --blue-ink:#071f4d;
  --blue-deep:#082c68;
  --blue-tint:#e8eef9;
  --gold:#c9962b;
  --gold-2:#e0b34a;
  --gold-tint:#faf2dd;
  --shadow-sm:0 1px 2px rgba(16,21,31,.04),0 2px 8px rgba(16,21,31,.05);
  --shadow-md:0 4px 14px rgba(16,21,31,.07),0 18px 40px -16px rgba(16,21,31,.16);
  --shadow-pop:0 8px 24px rgba(7,31,77,.22),0 30px 60px -20px rgba(7,31,77,.4);
  --sans:-apple-system,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
::selection{background:var(--gold);color:#fff}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}
body{
  background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:16.5px;line-height:1.85;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:var(--blue);text-decoration:none;background-image:linear-gradient(currentColor,currentColor);background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .25s,color .2s}
a:hover{background-size:100% 1px}
.container{max-width:1040px;margin:0 auto;padding:0 28px}

/* 顶部品牌线 */
body::before{
  content:"";display:block;height:4px;
  background:linear-gradient(90deg,var(--blue-deep),var(--blue) 40%,var(--gold) 100%);
}

/* ---------- 导航 ---------- */
.site-header{
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(1.5) blur(12px);
  -webkit-backdrop-filter:saturate(1.5) blur(12px);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:60;
}
.site-header .inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 28px;max-width:1040px;margin:0 auto}
.logo{
  font-weight:800;font-size:15px;color:var(--ink);line-height:1.3;background-image:none;white-space:nowrap;
  display:inline-flex;align-items:center;gap:11px;flex-shrink:0;
}
.logo::before{
  content:"";flex-shrink:0;width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,var(--blue-2),var(--blue-deep));
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.15),0 4px 10px rgba(11,61,145,.35);
  position:relative;
}
.logo::after{
  content:"";position:absolute;left:2px;top:50%;width:14px;height:2px;
  background:var(--gold-2);transform:translateY(-50%);border-radius:2px;
}
.logo span{color:var(--blue);font-size:12px;font-weight:700;white-space:nowrap;display:block}
.site-nav{display:flex;gap:0;flex-wrap:nowrap;justify-content:flex-end;align-items:center}
.site-nav a{
  font-size:13px;color:var(--soft);padding:6px 9px;border-radius:999px;background-image:none;white-space:nowrap;
  transition:color .2s,background-color .2s;
}
.site-nav a:hover{background:var(--paper-2);color:var(--ink)}
.site-nav a.active{color:#fff;background:linear-gradient(135deg,var(--blue-2),var(--blue-deep));font-weight:700;box-shadow:0 3px 10px rgba(11,61,145,.3)}

/* ============================================================
   内页页头（与首页 hero 同风格，紧凑版）
   ============================================================ */
.page-hero{
  position:relative;overflow:hidden;
  margin-top:24px;padding:46px 34px 40px;border-radius:20px;
  background:
    linear-gradient(100deg, rgba(7,31,77,.93) 0%, rgba(8,44,104,.78) 55%, rgba(11,61,145,.45) 100%),
    url('images/hero.jpg') center right/cover no-repeat,
    linear-gradient(135deg,var(--blue-deep),var(--blue));
  color:#fff;box-shadow:var(--shadow-pop);
}
.page-hero .ph-kicker{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold-2);margin-bottom:12px;
}
.page-hero h1{
  font-size:clamp(26px,3.6vw,38px);font-weight:900;line-height:1.2;
  color:#fff;margin:0;letter-spacing:-.01em;
  background:none;-webkit-text-fill-color:#fff;max-width:none;
}
.page-hero .ph-sub{font-size:15.5px;color:#cdddf5;margin:12px 0 0;max-width:40em}

/* ============================================================
   HERO —— 深蓝品牌大首屏（仅首页）
   ============================================================ */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 44px;
  border-radius:22px;margin-top:24px;
  box-shadow:var(--shadow-pop);
  background:
    linear-gradient(100deg, rgba(7,31,77,.94) 0%, rgba(8,44,104,.82) 42%, rgba(11,61,145,.55) 75%, rgba(11,61,145,.35) 100%),
    url('images/hero.jpg') center right/cover no-repeat,
    linear-gradient(135deg,var(--blue-deep) 0%,var(--blue) 55%,#0e3f92 100%);
  color:#fff;
}
.hero::before{
  content:"";position:absolute;right:-140px;top:-140px;width:460px;height:460px;border-radius:50%;
  border:1px solid rgba(255,255,255,.08);
}
.hero::after{
  content:"";position:absolute;right:-60px;top:-60px;width:300px;height:300px;border-radius:50%;
  border:1px solid rgba(224,179,74,.25);
}
.hero .inner,.hero .container{position:relative;z-index:2}
.hero .kicker{
  display:inline-block;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;
  color:var(--gold-2);margin-bottom:22px;text-transform:uppercase;
  background:rgba(255,255,255,.08);border:1px solid rgba(224,179,74,.35);
  padding:7px 16px;border-radius:999px;
}
.hero h1{
  font-size:clamp(34px,5.2vw,54px);line-height:1.12;font-weight:900;
  letter-spacing:-.02em;margin-bottom:20px;color:#fff;
  background:none;-webkit-text-fill-color:#fff;max-width:16em;
}
.hero .sub{font-size:18px;color:#cdddf5;max-width:40em;margin-bottom:38px;line-height:1.7}
.nap-strip{
  background:rgba(255,255,255,.97);color:var(--ink);
  border:1px solid rgba(255,255,255,.2);border-radius:18px;
  padding:26px 30px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  box-shadow:var(--shadow-pop);
}
.nap-strip .item{display:flex;gap:14px;align-items:flex-start;border-left:none;padding-left:0}
.nap-strip .item:first-child{border-left-color:var(--gold)}
.nap-icon{
  width:34px;height:34px;flex-shrink:0;margin-top:2px;
  padding:7px;background:var(--blue-tint);border-radius:10px;
}
.nap-strip .item .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-bottom:5px}
.nap-strip .item .v{font-size:16px;font-weight:700;line-height:1.55;color:var(--ink)}

/* 普通无序列表美化 */
section.block ul, .answer + ul{margin:16px 0;padding-left:0;list-style:none}
section.block ul li, .answer + ul li{position:relative;padding-left:22px;margin-bottom:9px;color:var(--soft);font-size:15.5px;line-height:1.8}
section.block ul li::before, .answer + ul li::before{content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;border-radius:2px;background:var(--gold)}
section.block ul li strong{color:var(--ink)}
.hero .muted{color:#b8cdec;margin-top:18px}
.hero .muted a{color:#fff}

/* ---------- 首段答案 ---------- */
.answer{
  background:var(--card);border-left:4px solid var(--gold);
  border-radius:0 16px 16px 0;padding:24px 28px;font-size:16.5px;margin:40px 0;
  box-shadow:var(--shadow-sm);
}

/* ---------- 章节 ---------- */
section.block{padding:56px 0 24px}
h2{
  font-size:clamp(26px,3.6vw,34px);font-weight:900;line-height:1.25;margin-bottom:22px;
  display:flex;align-items:center;gap:16px;letter-spacing:-.01em;
}
h2::before{
  content:"";flex-shrink:0;width:8px;height:32px;border-radius:4px;
  background:linear-gradient(180deg,var(--blue),var(--gold));
}
h3{font-size:19px;font-weight:700;margin:36px 0 12px;color:var(--ink)}
p{margin-bottom:16px;max-width:46em}
.lede{font-size:18px;font-weight:500}
.muted{color:var(--soft);font-size:14.5px}
strong{font-weight:700;color:var(--ink)}

/* ---------- 事实条：超大数字 ---------- */
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:30px 0}
.fact{
  background:var(--card);border:1px solid var(--line);border-radius:18px;
  padding:26px 26px 24px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
  transition:transform .25s,box-shadow .25s;
}
.fact:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.fact::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--blue),var(--gold));opacity:.85;
}
.fact .v{
  font-size:44px;font-weight:900;letter-spacing:-.02em;line-height:1;margin-bottom:10px;
  background:linear-gradient(135deg,var(--blue-deep),var(--blue));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.fact .v small{font-size:16px;font-weight:800;color:var(--gold);-webkit-text-fill-color:var(--gold);margin-left:3px}
.fact .k{font-size:13.5px;color:var(--soft);line-height:1.6}

/* ---------- 卡片网格 ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:30px 0}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:18px;
  padding:28px;position:relative;overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .25s,box-shadow .25s,border-color .25s;
}
.card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:4px;
  background:linear-gradient(90deg,var(--blue),var(--blue-2));opacity:0;transition:opacity .25s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-2)}
.card:hover::before{opacity:1}
/* 卡片顶部图片条 */
.card-media{
  margin:-26px -26px 18px;height:150px;border-radius:16px 16px 0 0;
  background-size:cover;background-position:center;position:relative;
}
.card-media::after{content:"";position:absolute;inset:0;border-radius:inherit;background:linear-gradient(180deg,transparent 50%,rgba(7,31,77,.15))}
.card h3{margin:0 0 14px;font-size:18px;display:flex;align-items:center;gap:10px}
.card h3 .no{
  color:var(--blue);font-family:var(--mono);font-size:12px;display:inline-block;
  letter-spacing:.08em;background:var(--blue-tint);padding:3px 10px;border-radius:7px;font-weight:800;
}
.card p,.card li{font-size:14.5px;color:var(--soft);line-height:1.85}
.card ul{list-style:none;margin-top:8px}
.card li{padding:7px 0 7px 22px;position:relative}
.card li::before{content:"";position:absolute;left:2px;top:15px;width:7px;height:7px;border-radius:2px;background:var(--gold)}

/* CTA 胶囊按钮 */
.card p a, .block > p a, .store p a{
  display:inline-block;background:var(--blue);color:#fff;
  padding:9px 18px;border-radius:999px;font-weight:700;font-size:13.5px;
  background-image:none;box-shadow:0 3px 10px rgba(11,61,145,.25);
  transition:transform .2s,box-shadow .2s,background-color .2s;
}
.card p a:hover, .block > p a:hover, .store p a:hover{
  background:var(--blue-deep);transform:translateY(-1px);box-shadow:0 6px 16px rgba(11,61,145,.35);
}

/* ---------- 表格 ---------- */
table{
  width:100%;border-collapse:separate;border-spacing:0;
  margin:22px 0 30px;font-size:14.5px;line-height:1.7;
  background:var(--card);border-radius:16px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
caption{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);text-align:left;padding:16px 18px 0}
th{
  background:linear-gradient(180deg,var(--blue-deep),var(--blue));color:#fff;
  font-size:13px;font-weight:600;text-align:left;padding:13px 18px;white-space:nowrap;letter-spacing:.02em;
}
td{padding:13px 18px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--soft);transition:background-color .15s}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover td{background:var(--blue-tint)}
td:first-child{color:var(--ink);font-weight:700}

/* ---------- 时间线 ---------- */
.timeline{list-style:none;margin:26px 0;border-left:2px solid var(--line-2);padding-left:30px}
.timeline li{position:relative;padding:0 0 28px}
.timeline li::before{
  content:"";position:absolute;left:-38px;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--card);border:3px solid var(--blue);box-shadow:0 0 0 4px var(--paper);
}
.timeline li:last-child::before{border-color:var(--gold)}
.timeline .year{
  display:inline-block;font-family:var(--mono);font-size:13px;font-weight:800;
  color:var(--blue);letter-spacing:.05em;background:var(--blue-tint);
  padding:3px 12px;border-radius:7px;margin-bottom:6px;
}
.timeline p{margin:6px 0 0;font-size:15px;color:var(--soft);max-width:none}

/* ---------- 步骤 ---------- */
.steps{list-style:none;counter-reset:s;margin:22px 0}
.steps li{counter-increment:s;display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line);align-items:baseline}
.steps li::before{
  content:counter(s,decimal-leading-zero);
  font-family:var(--mono);font-size:12px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--blue-2),var(--blue-deep));
  width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;
  box-shadow:0 3px 8px rgba(11,61,145,.3);
}
.steps li div{font-size:15px;color:var(--soft)}
.steps li b{color:var(--ink)}

/* ---------- 门店卡 ---------- */
.store{
  background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:32px;margin:22px 0;box-shadow:var(--shadow-sm);
}
.store h3{margin-top:0}
.store dl{display:grid;grid-template-columns:88px 1fr;gap:8px 18px;font-size:15px;margin:16px 0}
.store dt{color:var(--faint);font-size:13px;padding-top:2px}
.store dd{color:var(--ink);font-weight:600}
.badge{
  display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  background:linear-gradient(135deg,var(--gold-tint),#fff3d6);
  color:#8a6413;border:1px solid rgba(201,150,43,.4);
  border-radius:7px;padding:3px 11px;margin-left:8px;vertical-align:2px;font-weight:800;
}

/* ---------- 署名块 ---------- */
.sign-block{
  background:linear-gradient(180deg,#fff,#f2f5fa);
  border:1px solid var(--line);border-radius:20px;
  padding:30px 32px;margin:56px 0 0;font-size:14.5px;line-height:2;
  box-shadow:var(--shadow-sm);
}
.sign-block .name{font-weight:900;font-size:18px;margin-bottom:8px;color:var(--blue-deep)}
.sign-block .def{color:var(--soft)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:70px;background:linear-gradient(180deg,#14130d,#0a0906);
  color:#c8c4b8;font-size:13.5px;line-height:2;position:relative;
}
.site-footer::before{
  content:"";display:block;height:4px;
  background:linear-gradient(90deg,var(--gold),var(--blue) 60%,var(--blue-deep));
}
.site-footer .container{padding:52px 28px 40px}
.site-footer .fname{color:#fff;font-weight:900;font-size:17px;margin-bottom:10px}
.site-footer a{color:#c8c4b8;box-shadow:none}
.site-footer a:hover{color:var(--gold-2)}
.site-footer .legal{
  border-top:1px solid #33322c;margin-top:28px;padding-top:20px;
  font-family:var(--mono);font-size:11px;letter-spacing:.04em;color:#8b877a;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
}
.footer-nav{display:flex;gap:20px;flex-wrap:wrap;margin-top:14px}

/* ---------- 三栏步骤卡（三重检测等） ---------- */
.steps-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:22px 0}
.step-card{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:24px;position:relative;box-shadow:var(--shadow-sm);
  transition:transform .25s,box-shadow .25s;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.step-card .sn{
  font-family:var(--mono);font-size:12px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--blue-2),var(--blue-deep));
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.step-card h4{font-size:15.5px;font-weight:800;margin-bottom:8px;color:var(--ink)}
.step-card p{font-size:13.5px;color:var(--soft);line-height:1.75;margin:0}
.step-card .tag{display:inline-block;margin-top:10px;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;color:var(--gold);background:var(--gold-tint);padding:2px 8px;border-radius:6px}

/* ---------- 保障卡网格（六大保障等） ---------- */
.shield-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:22px 0}
.shield{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:20px 22px;border-top:3px solid var(--gold);box-shadow:var(--shadow-sm);
}
.shield h4{font-size:15px;font-weight:800;margin-bottom:6px;color:var(--blue-deep)}
.shield p{font-size:13px;color:var(--soft);line-height:1.7;margin:0 0 6px}
.shield .term{font-family:var(--mono);font-size:11px;color:var(--faint)}

/* ---------- 响应式 ---------- */
@media (max-width:860px){
  .steps-cards,.shield-grid{grid-template-columns:1fr 1fr}
  .nap-strip{grid-template-columns:1fr;gap:16px}
  .cards,.facts{grid-template-columns:1fr 1fr}
  .site-header .inner{flex-direction:column;align-items:flex-start;gap:10px}
  .hero{padding:56px 0 46px}
  .fact .v{font-size:36px}
}
@media (max-width:540px){
  body{font-size:16px}
  .container{padding:0 20px}
  .cards,.facts{grid-template-columns:1fr}
  .steps-cards,.shield-grid{grid-template-columns:1fr}
  .card,.fact,.store,.sign-block{padding:22px}
  .fact .v{font-size:32px}
  .nap-strip{padding:20px}
}