/* ==========================================================================
   鸿堉会展 — 官网样式 v2
   配色：曜石黑 + 香槟金 + 象牙白
   要点：深色用近黑（不用蓝），金色走金属渐变，浅色段落之间靠暖白差异分层
   ========================================================================== */

:root{
  /* 深色系：越往后越黑 */
  --ink:#050507;
  --onyx:#0C0D11;
  --onyx-2:#12141A;
  --onyx-3:#1A1D24;

  /* 香槟金三阶 */
  --gold:#C8A45C;
  --gold-hi:#E9D4A6;
  --gold-deep:#9E7B36;
  --gold-grad:linear-gradient(135deg,#EFDCB4 0%,#D3B173 38%,#C8A45C 62%,#A9863F 100%);

  /* 浅色系：暖象牙白 */
  --paper:#FAF8F4;
  --paper-2:#F5F2EB;

  --text:#121317;
  --muted:#6B6F78;

  /* 分隔线：深色上用极淡金，浅色上用极淡墨 */
  --line:rgba(200,164,92,.16);
  --line-soft:rgba(255,255,255,.07);
  --line-dark:rgba(18,19,23,.09);

  --wrap:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

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

html{scroll-behavior:smooth}

body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",sans-serif;
  background:var(--paper);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}

.wrap{width:min(var(--wrap),calc(100% - 96px));margin-inline:auto}

/* 锚点跳转时给固定导航留出让位，否则段落标题会被压在导航底下 */
section[id]{scroll-margin-top:92px}

/* ---------- 通用文字 ---------- */
.eyebrow{
  font-size:11px;letter-spacing:.34em;font-weight:600;
  color:var(--gold);text-transform:uppercase;margin-bottom:22px;
  display:flex;align-items:center;gap:14px;
}
.eyebrow::before{
  content:"";width:26px;height:1px;flex:none;
  background:linear-gradient(90deg,var(--gold),transparent);
}
.eyebrow.dark{color:var(--gold-deep)}

h1,h2,h3,h4{font-weight:600;line-height:1.22;letter-spacing:-.02em}

h2{font-size:clamp(30px,3.8vw,50px);letter-spacing:-.03em;line-height:1.18}

.sec-head{margin-bottom:70px;max-width:780px}
.sec-head.light{color:#fff}
.sec-sub{margin-top:18px;color:var(--muted);font-size:16px;max-width:620px;line-height:1.8}
.sec-head.light .sec-sub{color:rgba(255,255,255,.58)}

.body{color:var(--muted);font-size:16px;margin-top:18px;line-height:1.85}
.dark-body{color:rgba(255,255,255,.6)}

/* 金色渐变文字（仅用于极少数强调，避免滥用） */
.grad-gold{
  background:var(--gold-grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:52px;padding:0 30px;border-radius:2px;
  font-size:14px;font-weight:500;letter-spacing:.06em;
  transition:all .4s var(--ease);cursor:pointer;white-space:nowrap;
  position:relative;
}
.btn-gold{
  background:var(--gold-grad);color:#17120A;border:1px solid rgba(233,212,166,.5);
  box-shadow:0 10px 30px -12px rgba(200,164,92,.55);
}
.btn-gold:hover{
  transform:translateY(-2px);
  box-shadow:0 18px 40px -14px rgba(200,164,92,.7);
  filter:brightness(1.06);
}
.btn-line{
  border:1px solid rgba(255,255,255,.22);color:#fff;
  background:rgba(255,255,255,.02);
  backdrop-filter:blur(6px);
}
.btn-line:hover{border-color:var(--gold);color:var(--gold-hi);background:rgba(200,164,92,.06)}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .45s var(--ease),backdrop-filter .45s,border-color .45s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(6,7,10,.82);
  backdrop-filter:blur(22px) saturate(150%);
  border-bottom-color:var(--line);
}
.nav-inner{
  width:min(var(--wrap),calc(100% - 96px));margin-inline:auto;
  height:80px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.brand{display:flex;align-items:center;gap:14px;color:#fff}
.brand-mark{
  width:30px;height:30px;flex:none;position:relative;
  background:var(--gold-grad);
  clip-path:polygon(0 0,100% 0,100% 62%,50% 100%,0 62%);
  box-shadow:0 0 24px -6px rgba(200,164,92,.5);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;letter-spacing:.14em;font-weight:600}
.brand-text em{
  font-style:normal;font-size:9px;letter-spacing:.24em;
  color:rgba(255,255,255,.42);margin-top:5px;
}
.nav-links{display:flex;gap:38px;margin-left:auto}
.nav-links a{
  font-size:14px;color:rgba(255,255,255,.72);
  position:relative;transition:color .3s;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-7px;width:0;height:1px;
  background:var(--gold);transition:width .38s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:100%}
.nav-actions{display:none;align-items:center;gap:16px}
.menu-btn{display:none;width:40px;height:40px;background:none;border:0;cursor:pointer;position:relative}
.menu-btn span{
  position:absolute;left:10px;width:20px;height:1.5px;background:#fff;
  transition:transform .35s var(--ease),opacity .3s;
}
.menu-btn span:nth-child(1){top:16px}
.menu-btn span:nth-child(2){top:23px}
.menu-btn.open span:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.menu-btn.open span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;flex-direction:column;
  justify-content:center;background:var(--onyx);color:#fff;overflow:hidden;
  padding-top:80px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(1080px 640px at 88% 0%,rgba(200,164,92,.075),transparent 60%),
    radial-gradient(1000px 620px at 2% 98%,rgba(84,116,168,.13),transparent 58%),
    linear-gradient(168deg,#171A22 0%,#0E1015 48%,#07080A 100%);
}
/* 极细噪点，给深色面一点"纸感"，避免大面积纯黑发闷 */
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hero-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:96px 96px;
  mask-image:radial-gradient(950px 720px at 58% 40%,#000 8%,transparent 76%);
  -webkit-mask-image:radial-gradient(950px 720px at 58% 40%,#000 8%,transparent 76%);
}
.hero-glow{
  position:absolute;width:760px;height:760px;right:-190px;top:-210px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,164,92,.10),transparent 66%);
  filter:blur(46px);
}
.hero-arcs{position:absolute;inset:0;width:100%;height:100%;opacity:.55}
.arc{fill:none;stroke:url(#arcGold);stroke-width:1.1}
.arc-2{stroke-width:.8;opacity:.45}
.node{fill:var(--gold-hi)}
.node-2{fill:#8FB3DE;opacity:.75}

.hero-wrap{position:relative;z-index:2;padding-block:86px}
.hero h1{
  font-size:clamp(40px,6vw,84px);
  line-height:1.08;letter-spacing:-.035em;margin-bottom:32px;
  font-weight:600;
}
.hero h1 .line-2{display:inline-block}
.hero h1 .grad-gold{
  background:linear-gradient(135deg,#F7E9CC 0%,#E5CB95 40%,#D0AD6B 72%,#B8934F 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero h1 .dot{color:var(--gold);margin-inline:.06em}
.lede{
  font-size:clamp(15px,1.35vw,18px);color:rgba(255,255,255,.64);
  max-width:660px;line-height:1.95;
}
.hero-cta{display:flex;gap:16px;margin-top:50px;flex-wrap:wrap}

.hero-stats{
  position:relative;z-index:2;margin-top:auto;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.012),transparent);
}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{
  padding:36px 0 40px;border-right:1px solid var(--line);
  padding-left:36px;position:relative;
}
.stat:first-child{padding-left:0}
.stat:last-child{border-right:0}
.stat b{
  display:block;font-size:clamp(30px,3.4vw,46px);font-weight:600;
  letter-spacing:-.03em;line-height:1;
  font-variant-numeric:tabular-nums;
  background:var(--gold-grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.stat span{display:block;margin-top:14px;font-size:13px;color:rgba(255,255,255,.48);letter-spacing:.06em}

/* ---------- About ---------- */
.about{
  padding:130px 0 118px;
  background:
    radial-gradient(720px 420px at 102% -4%,rgba(200,164,92,.07),transparent 64%),
    linear-gradient(180deg,var(--paper) 0%,#FCFAF6 58%,var(--paper) 100%);
}
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:96px;align-items:start}
.about-lead h2{margin-bottom:10px}
.about-cards{display:flex;flex-direction:column;gap:3px;padding-top:6px}
.mini{
  padding:30px 32px;background:#fff;border-left:2px solid rgba(200,164,92,.25);
  transition:border-color .45s var(--ease),transform .45s var(--ease),box-shadow .45s var(--ease);
  box-shadow:0 1px 2px rgba(18,19,23,.02);
}
.mini:hover{
  border-left-color:var(--gold);transform:translateX(6px);
  box-shadow:0 12px 30px -18px rgba(18,19,23,.28);
}
.mini h3{font-size:17px;margin-bottom:9px;letter-spacing:-.01em}
.mini p{font-size:14px;color:var(--muted);line-height:1.8}

.timeline{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  margin-top:104px;border-top:1px solid var(--line-dark);
}
.timeline li{padding:40px 40px 0 0;position:relative}
.timeline li::before{
  content:"";position:absolute;top:-4.5px;left:0;width:8px;height:8px;
  background:var(--gold);transform:rotate(45deg);
}
.timeline .yr{
  font-size:12px;letter-spacing:.2em;color:var(--gold-deep);font-weight:600;
  display:block;margin-bottom:16px;
}
.timeline h4{font-size:23px;margin-bottom:11px;letter-spacing:-.02em}
.timeline p{font-size:14px;color:var(--muted);line-height:1.85}

/* ---------- Services ---------- */
/* 纯白只留给卡片；区块底色收到象牙白，避免整屏高亮度冲撞下一段深色 */
.services{
  padding:130px 0 118px;
  background:linear-gradient(180deg,#FFFEFC 0%,#FDFBF6 58%,var(--paper) 100%);
}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:svc}
.svc{
  background:#fff;padding:38px 34px 36px;
  border:1px solid rgba(18,19,23,.075);
  transition:background .45s var(--ease),transform .45s var(--ease),
             border-color .45s var(--ease),box-shadow .45s var(--ease);
  position:relative;overflow:hidden;
  counter-increment:svc;
}
/* 右上角序号：让卡片下半部的空白有落点，不至于"大而空" */
.svc::before{
  content:"0" counter(svc);
  position:absolute;right:26px;top:28px;
  font-size:12px;letter-spacing:.18em;font-weight:600;
  color:rgba(158,123,54,.32);
}
.svc::after{
  content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:var(--gold-grad);transform:scaleX(0);transform-origin:left;
  transition:transform .55s var(--ease);
}
.svc:hover{
  background:#FEFDFA;transform:translateY(-5px);
  border-color:rgba(200,164,92,.45);
  box-shadow:0 26px 50px -34px rgba(18,19,23,.34);
}
.svc:hover::after{transform:scaleX(1)}
.svc-ico{
  display:flex;align-items:center;justify-content:center;
  width:48px;height:48px;border-radius:50%;
  border:1px solid rgba(200,164,92,.35);color:var(--gold-deep);
  background:radial-gradient(circle,rgba(200,164,92,.10),transparent 70%);
  margin-bottom:26px;
}
.svc-ico svg{width:22px;height:22px}
.svc h3{font-size:18px;margin-bottom:12px;letter-spacing:-.01em}
.svc p{font-size:14px;color:var(--muted);line-height:1.85}

.product-strip{
  margin-top:58px;display:flex;align-items:center;gap:28px;flex-wrap:wrap;
  padding:28px 0 6px;border-top:1px solid var(--line-dark);
}
.product-strip>span{font-size:11px;letter-spacing:.26em;color:var(--gold-deep);font-weight:600;flex:none}
.product-strip ul{display:flex;gap:10px;flex-wrap:wrap}
.product-strip li{
  font-size:13px;color:var(--text);padding:7px 17px;
  border:1px solid var(--line-dark);border-radius:100px;
  transition:border-color .35s,color .35s;
}
.product-strip li:hover{border-color:rgba(200,164,92,.5);color:var(--gold-deep)}

/* ---------- Fleet ---------- */
/* 这一段走浅色：页面只有首屏和结尾两处深色，中间全部留在暖白里，
   车辆照片本身是深色棚拍，只在卡片顶部占一条画面，不构成整屏黑块。 */
.fleet{
  padding:112px 0 96px;
  background:
    radial-gradient(980px 420px at 50% -4%,rgba(200,164,92,.07),transparent 70%),
    linear-gradient(180deg,#FBF8F2 0%,#F7F3EA 100%);
  border-top:1px solid rgba(18,19,23,.055);
  color:var(--text);position:relative;
}
.fleet .wrap{position:relative;z-index:2}
.fleet-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.car{
  background:#fff;
  border:1px solid rgba(18,19,23,.075);
  border-radius:14px;overflow:hidden;
  box-shadow:0 18px 40px -36px rgba(18,19,23,.4);
  transition:border-color .45s var(--ease),transform .45s var(--ease),box-shadow .45s var(--ease);
}
.car:hover{
  border-color:rgba(200,164,92,.45);transform:translateY(-6px);
  box-shadow:0 34px 60px -40px rgba(18,19,23,.48);
}
.car-figure{position:relative;overflow:hidden;background:#EDEAE3;aspect-ratio:2.2/1}
.car-figure img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .9s var(--ease);
  filter:saturate(.92) contrast(1.02);
}
.car:hover .car-figure img{transform:scale(1.035)}
.car-figure::after{
  content://;position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 72%,rgba(255,255,255,.12) 100%);
}
.car-body{padding:24px 26px 28px}
.tag{
  display:inline-block;font-size:10.5px;letter-spacing:.18em;
  color:var(--gold-deep);border:1px solid rgba(200,164,92,.42);
  padding:5px 13px;border-radius:2px;margin-bottom:16px;
  background:rgba(200,164,92,.07);
}
.car-body h3{font-size:19px;margin-bottom:8px;letter-spacing:-.01em}
.car-body p{font-size:13px;color:var(--muted)}

.fleet-note{
  display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:54px;border-top:1px solid var(--line-dark);
}
.fleet-note>div{padding:28px 26px 0 0}
.fleet-note b{display:block;font-size:14px;letter-spacing:.12em;color:var(--gold-deep);margin-bottom:9px}
.fleet-note span{font-size:13px;color:var(--muted)}
.fleet-foot{
  margin-top:46px;font-size:13px;color:#8C8F96;letter-spacing:.02em;
}

/* ---------- Assurance ---------- */
.assurance{padding:130px 0;background:var(--paper-2)}
.assure-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(18,19,23,.115)}
.as{background:var(--paper-2);padding:42px 36px;position:relative;transition:background .4s}
.as:hover{background:#FBF8F2}
.as i{
  font-style:normal;font-size:11px;letter-spacing:.22em;color:rgba(158,123,54,.55);font-weight:600;
}
.as h3{font-size:18px;margin:20px 0 11px;letter-spacing:-.01em}
.as p{font-size:14px;color:var(--muted);line-height:1.85}

/* ---------- Process ---------- */
.process{padding:130px 0;background:#fff}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:64px}
.step{position:relative;padding-top:30px;border-top:1px solid var(--line-dark)}
.step .num{
  position:absolute;top:-14px;left:0;background:#fff;padding-right:16px;
  font-size:12px;letter-spacing:.22em;color:var(--gold-deep);font-weight:600;
}
.step h3{font-size:20px;margin-bottom:22px;letter-spacing:-.015em}
.step ul li{
  font-size:14px;color:var(--muted);line-height:1.95;padding-left:18px;position:relative;
}
.step ul li::before{
  content:"";position:absolute;left:0;top:13px;width:5px;height:5px;
  border-radius:50%;background:var(--gold);
}

/* ---------- Cases ---------- */
.cases{padding:130px 0 140px;background:var(--paper-2)}
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.case{
  background:#fff;padding:46px 46px 42px;
  transition:transform .5s var(--ease),box-shadow .5s var(--ease);
  border-top:2px solid transparent;
}
.case:hover{
  transform:translateY(-6px);
  box-shadow:0 34px 70px -34px rgba(18,19,23,.3);
  border-top-color:var(--gold);
}
.case-top{display:flex;align-items:baseline;gap:10px;margin-bottom:26px}
.badge{
  font-size:10.5px;letter-spacing:.16em;color:#17120A;background:var(--gold-grad);
  padding:5px 13px;border-radius:2px;margin-right:auto;font-weight:600;
}
.case-top b{
  font-size:36px;font-weight:600;letter-spacing:-.03em;line-height:1;
  color:var(--gold-deep);
}
.case-top span{font-size:12px;color:var(--muted)}
.case h3{font-size:25px;margin-bottom:15px;letter-spacing:-.02em}
.case>p{font-size:14px;color:var(--muted);line-height:1.9;margin-bottom:24px}
.case ul li{font-size:13px;color:var(--text);padding-left:20px;position:relative;line-height:2.05}
.case ul li::before{
  content:"";position:absolute;left:0;top:13px;width:11px;height:1px;background:var(--gold);
}

/* ---------- Partners ---------- */
.partners{padding:118px 0 0;background:#fff;overflow:hidden}
.partners-title{font-size:clamp(24px,2.6vw,34px);margin-top:-4px;letter-spacing:-.025em}
.marquee{
  margin-top:66px;border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);
  padding:36px 0;overflow:hidden;
  mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent);
}
.marquee-track{
  display:flex;gap:74px;width:max-content;
  animation:slide 40s linear infinite;
}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{
  font-size:17px;color:#938C80;letter-spacing:.08em;white-space:nowrap;
  transition:color .3s;
}
.marquee-track span:hover{color:var(--gold-deep)}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- Coop ---------- */
.coop{padding:118px 0 130px;background:#fff}
.coop-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.co{
  padding:42px 36px;border:1px solid var(--line-dark);
  transition:border-color .45s var(--ease),transform .45s var(--ease),background .45s;
  position:relative;background:#fff;
}
.co:hover{
  border-color:rgba(200,164,92,.55);transform:translateY(-6px);
  background:#FDFBF7;
}
.co h3{font-size:18px;margin-bottom:9px;letter-spacing:-.01em}
.co>p{font-size:13px;color:var(--muted);margin-bottom:24px}
.co ul li{font-size:13px;color:var(--text);line-height:2.15;padding-left:17px;position:relative}
.co ul li::before{
  content:"";position:absolute;left:0;top:15px;width:4px;height:4px;
  border-radius:50%;background:var(--gold);
}

/* ---------- Contact ---------- */
.contact{
  padding:120px 0;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(145deg,#12141A,#08080B 72%);
}
.contact::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(rgba(255,255,255,.015) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.015) 1px,transparent 1px),
    radial-gradient(880px 500px at 16% 16%,rgba(200,164,92,.15),transparent 60%),
    radial-gradient(760px 460px at 92% 86%,rgba(84,116,168,.13),transparent 64%);
  background-size:118px 118px,118px 118px,auto,auto;
  mask-image:radial-gradient(1500px 900px at 50% 46%,#000 34%,transparent 96%);
  -webkit-mask-image:radial-gradient(1500px 900px at 50% 46%,#000 34%,transparent 96%);
}
.contact::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.045;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}
.contact-wrap{
  position:relative;z-index:2;display:grid;
  grid-template-columns:1fr 430px;gap:96px;align-items:center;
}
.contact-lead h2{font-size:clamp(30px,3.8vw,50px);margin-bottom:24px}
.trust-row{
  display:flex;gap:52px;margin-top:56px;padding-top:34px;
  border-top:1px solid var(--line);
}
.trust-row li{display:flex;flex-direction:column;gap:9px}
.trust-row b{
  font-size:27px;font-weight:600;letter-spacing:-.02em;line-height:1;
  background:var(--gold-grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.trust-row span{font-size:12px;letter-spacing:.12em;color:rgba(255,255,255,.4)}
.contact-card{
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  padding:16px 34px;backdrop-filter:blur(10px);
  box-shadow:0 40px 80px -50px rgba(0,0,0,.9);
}
.c-row{
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:21px 0;border-bottom:1px solid var(--line-soft);
  transition:color .3s;
}
.c-row span{font-size:12px;letter-spacing:.16em;color:rgba(255,255,255,.42)}
.c-row:last-child{border-bottom:0}
.c-row b{font-size:15px;font-weight:500;letter-spacing:.02em}
a.c-row:hover b{color:var(--gold-hi)}

/* ---------- Footer ---------- */
.foot{background:var(--ink);color:rgba(255,255,255,.5);padding:70px 0 42px;font-size:13px}
.foot-wrap{display:grid;grid-template-columns:1.4fr 1fr auto;gap:44px;align-items:start}
.foot-brand strong{display:block;color:#fff;font-size:15px;letter-spacing:.12em;margin-bottom:9px}
.foot-brand em{font-style:normal;font-size:9px;letter-spacing:.22em;color:rgba(255,255,255,.28)}
.foot-brand p{margin-top:16px;color:rgba(255,255,255,.36)}
.foot-links{display:flex;flex-wrap:wrap;gap:26px}
.foot-links a{transition:color .3s}
.foot-links a:hover{color:var(--gold-hi)}
.foot-meta{text-align:right}
.beian{margin-top:9px}
.beian a:hover{color:var(--gold-hi)}

/* ---------- 动效 ---------- */
/* ⚠️ 隐藏态只在 <html class="js"> 下生效：万一脚本挂了/被拦截，
      页面必须仍能看到全部内容，而不是一片空白 */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .85s var(--ease),transform .85s var(--ease)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .about-grid{grid-template-columns:1fr;gap:58px}
  .contact-wrap{grid-template-columns:1fr;gap:58px}
  .svc-grid,.assure-grid{grid-template-columns:repeat(2,1fr)}
  .fleet-grid{grid-template-columns:repeat(2,1fr)}
  .fleet-grid .car:last-child{grid-column:span 2}
  .fleet-note{grid-template-columns:repeat(2,1fr);gap:20px}
  .coop-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr}
  .timeline li{padding:30px 0 0}
  .timeline li+li{margin-top:30px}
  .foot-wrap{grid-template-columns:1fr;gap:30px}
  .foot-meta{text-align:left}
}

@media (max-width:820px){
  .wrap,.nav-inner{width:calc(100% - 48px)}
  .nav-links{
    position:fixed;inset:80px 0 auto 0;background:rgba(6,7,10,.97);
    flex-direction:column;gap:0;padding:8px 24px 24px;
    border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:all .35s var(--ease);
  }
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{padding:16px 0;border-bottom:1px solid var(--line-soft);font-size:15px}
  .nav-actions{display:flex}
  .menu-btn{display:block}
  .eyebrow{letter-spacing:.24em;font-size:10px}
  .hero{padding-top:80px}
  .hero-wrap{padding-block:64px}
  /* 手机上 100vh 会把内容拉得太空，改成由内容撑高 */
  .hero{min-height:auto}
  .hero h1{letter-spacing:-.03em}
  .hero-stats{margin-top:52px}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .stat{padding:26px 0 26px 22px}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(2n+1){padding-left:0}
  .stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .svc-grid,.assure-grid,.fleet-grid{grid-template-columns:1fr}
  .fleet-grid .car:last-child{grid-column:auto}
  .fleet-note{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:42px}
  .about,.services,.fleet,.assurance,.process,.cases,.coop,.contact{padding:80px 0}
  .partners{padding:80px 0 0}
  .timeline{margin-top:66px}
  .sec-head{margin-bottom:46px}
  .case{padding:34px 26px}
  .contact-card{padding:10px 24px}
  .trust-row{gap:30px;margin-top:44px;padding-top:28px;flex-wrap:wrap}
  .trust-row b{font-size:22px}
  .hero-cta .btn{flex:1}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}