/* =========================================================
   重庆双翔档案 官网样式
   定版：方案A · 中国红喜庆版（2026-11-04 客户确认）
   主色 正红 #E02020 / 香槟金 #F5C242 / 米白 #FFF8EE
   ========================================================= */
:root{
  --red:#e02020; --red-2:#b3120f; --red-3:#8a0a08;
  --gold:#f5c242; --gold-2:#ffdd7a; --gold-soft:#fff3d9;
  --gold-d:#c99a22;
  --ink:#2e1a16; --ink-2:#7a5a50; --muted:#a5857a;
  --bg:#ffffff; --bg2:#fff8ee; --bg3:#fdeed6;
  --cream:#fff8ee; --line:#f2dcc4;
  --shadow:0 8px 24px rgba(160,60,30,.08);
  --shadow-lg:0 16px 40px rgba(150,40,25,.20);
  --radius:14px;
  --maxw:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.8;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--red);text-decoration:none}
a:hover{color:var(--red-2)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Header / Nav ---------- */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);
  backdrop-filter:saturate(140%) blur(6px);border-bottom:3px solid var(--red)}
.nav{max-width:var(--maxw);margin:0 auto;padding:10px 24px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto}
.brand img{height:44px;width:auto}
.brand .txt{display:none}
.navlinks{display:flex;gap:4px;flex-wrap:wrap}
.navlinks a{padding:7px 12px;border-radius:8px;color:var(--ink-2);font-size:15px;font-weight:500}
.navlinks a:hover{background:var(--cream);color:var(--red)}
.navlinks a.active{color:#fff;background:var(--red);font-weight:600}
.nav-cta{background:linear-gradient(100deg,var(--gold),var(--gold-2));color:var(--red-3)!important;
  padding:8px 18px;border-radius:999px;font-weight:700;font-size:15px}
.nav-cta:hover{color:var(--red-3)!important;filter:brightness(1.05)}

/* ---------- Hero：红底金纹 · 居中对称 ---------- */
.hero{position:relative;overflow:hidden;text-align:center;color:#fff;
  background:radial-gradient(120% 90% at 50% 0%,#e8352a 0%,#c0160f 45%,#8a0a08 100%)}
.hero::before{content:"";position:absolute;inset:0;z-index:2;opacity:.13;pointer-events:none;
  background-image:radial-gradient(circle at 50% 50%,#ffe9a8 0 2px,transparent 3px);
  background-size:38px 38px}
.hero .wrap{position:relative;z-index:3;padding:74px 24px 70px}
.hero .kicker{display:inline-block;letter-spacing:2px;font-size:13px;color:var(--gold);
  border:1.5px solid rgba(245,194,66,.65);border-radius:999px;padding:5px 16px;margin-bottom:18px;font-weight:600}
.hero h1{font-size:44px;line-height:1.3;margin:0 auto 16px;font-weight:800;letter-spacing:1px}
.hero h1 .em{color:var(--gold)}
.hero h1::after{content:"";display:block;width:120px;height:3px;margin:20px auto 0;
  background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.hero p.sub{font-size:17px;max-width:660px;margin:0 auto 20px;color:#ffe9d6}
.hero .badges{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:0 0 26px}
.hero .badge{background:none;border:1.5px solid var(--gold);border-radius:999px;
  padding:5px 15px;font-size:14px;font-weight:600;color:var(--gold)}
.hero .cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* 首页照片首屏：照片压红，保留"红底"观感，不丢实景质感 */
.hero.photo{background:#8a0a08}
.hero.photo .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;
  filter:saturate(.85) contrast(1.05)}
.hero.photo .hero-mask{position:absolute;inset:0;z-index:1;
  background:linear-gradient(170deg,rgba(138,10,8,.90) 0%,rgba(192,22,15,.86) 46%,rgba(224,32,32,.80) 100%)}
.hero.photo .wrap{padding:88px 24px 84px}

.btn{display:inline-block;padding:13px 28px;border-radius:999px;font-weight:700;font-size:16px;transition:.2s}
.btn-gold{background:linear-gradient(100deg,var(--gold),var(--gold-2));color:var(--red-3)}
.btn-gold:hover{background:#fff;color:var(--red-2)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.78);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-line{border:1.5px solid var(--red);color:var(--red);background:#fff}
.btn-line:hover{background:var(--red);color:#fff}
.btn-dark{background:var(--red-2);color:#fff}
.btn-dark:hover{background:var(--red-3);color:#fff}

/* ---------- Stat strip：金色托底的圆形红徽章 ---------- */
.stats{background:var(--cream);border-bottom:1px solid var(--line)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:30px 24px}
.stat{text-align:center;padding:4px 8px}
.stat .n{width:78px;height:78px;margin:0 auto 10px;border-radius:50%;
  background:linear-gradient(140deg,var(--red),var(--red-2));color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;letter-spacing:-.3px;line-height:1.15;
  box-shadow:0 10px 22px rgba(179,18,15,.24),0 0 0 4px rgba(245,194,66,.22)}
.stat .n small{font-size:11px;font-weight:600;color:#ffe2c8;margin-left:1px}
.stat .l{font-size:14px;color:var(--ink-2);margin-top:2px}

/* ---------- Sections：居中标题 + 金色分隔线 ---------- */
section.block{padding:62px 0}
section.block.alt{background:var(--cream)}
.eyebrow{display:block;text-align:center;color:var(--gold-d);font-weight:700;
  letter-spacing:3px;font-size:13px;text-transform:uppercase}
h2.sec{font-size:29px;margin:8px 0 10px;color:var(--red-2);font-weight:800;
  text-align:center;border:0;padding:0;letter-spacing:.5px}
h2.sec::after{content:"";display:block;width:80px;height:3px;margin:12px auto 0;
  background:var(--gold);border-radius:2px}
.sec-intro{color:var(--ink-2);max-width:780px;margin:0 auto 30px;font-size:16px;text-align:center}
h3{font-size:19px;color:var(--red-2);margin:22px 0 8px}

/* ---------- Cards：金边 + 金色圆形序号 ---------- */
.cards{display:grid;gap:18px;counter-reset:cardno}
.cards.c2{grid-template-columns:repeat(2,1fr)}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c4{grid-template-columns:repeat(4,1fr)}
.card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px 22px;box-shadow:var(--shadow);transition:.22s;counter-increment:cardno}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--gold)}
.card .ic{display:none}
.card::before{content:counter(cardno,decimal-leading-zero);display:inline-flex;
  align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;
  background:var(--gold);color:var(--red-3);font-weight:800;font-size:13px;margin-bottom:10px}
.card h3{margin:0 0 6px;font-size:18px;color:var(--red-2)}
.card p{margin:0;color:var(--ink-2);font-size:15px}
.card .tag{display:inline-block;margin-top:10px;font-size:12px;color:var(--gold-d);
  background:var(--gold-soft);border-radius:6px;padding:2px 9px}

/* feature list */
.flist{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.flist li{display:flex;gap:14px;align-items:flex-start}
.flist .dot{flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  background:linear-gradient(140deg,var(--red),var(--red-2));color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-top:2px}
.flist b{color:var(--ink)}
.flist span{color:var(--ink-2)}

/* ---------- Steps (process) ---------- */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.steps .step{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:16px 18px}
.steps .step::before{counter-increment:s;content:counter(s);flex:0 0 auto;width:34px;height:34px;
  border-radius:50%;background:var(--gold);color:var(--red-3);font-weight:800;
  display:flex;align-items:center;justify-content:center}
.steps b{display:block;color:var(--ink)}
.steps span{color:var(--ink-2);font-size:15px}

/* ---------- Split (image + text) ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split.rev .media{order:2}
.split .media img{border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;
  border:4px solid #fff;outline:1px solid var(--line)}
.split .media .cap{font-size:13px;color:var(--muted);margin-top:10px;text-align:center}
.split .body .eyebrow{text-align:left}
.split .body h2.sec{text-align:left;border:0;padding:0}
.split .body h2.sec::after{margin:12px 0 0}
.split .body .sec-intro{text-align:left;margin:0 0 24px;max-width:100%}

/* ---------- Full-bleed band：红金实景带 ---------- */
.band{position:relative;overflow:hidden;color:#fff;padding:0;text-align:center}
.band .band-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.band .band-mask{position:absolute;inset:0;z-index:1;
  background:linear-gradient(105deg,rgba(138,10,8,.93),rgba(192,22,15,.86) 55%,rgba(224,32,32,.80))}
.band .wrap{position:relative;z-index:2;padding:62px 24px}
.band h2{color:#fff;font-size:29px;margin:6px 0 12px;font-weight:800;letter-spacing:.5px}
.band h2::after{content:"";display:block;width:80px;height:3px;margin:14px auto 0;
  background:var(--gold);border-radius:2px}
.band p{color:#ffe9d6;max-width:700px;margin:0 auto;font-size:16px}
.band .kicker{display:inline-block;letter-spacing:3px;font-size:13px;color:var(--gold);
  border:1.5px solid rgba(245,194,66,.65);border-radius:999px;padding:5px 16px;margin-bottom:14px;font-weight:600}
.band .band-cta{margin-top:22px}

/* ---------- Photo gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery figure{margin:0;position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.gallery img{width:100%;height:300px;object-fit:cover;transition:.3s}
.gallery figure:hover img{transform:scale(1.05)}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:14px 16px;
  background:linear-gradient(transparent,rgba(90,10,8,.88));color:#fff;font-size:14px;font-weight:500}

/* ---------- Sectors (服务领域) ---------- */
.sectors{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.sector{background:#fff;border:1px solid var(--line);border-top:5px solid var(--red);
  border-radius:12px;padding:20px 22px;transition:.22s}
.sector:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.sector .ic{width:42px;height:42px;border-radius:11px;background:var(--gold-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.sector .ic svg{width:24px;height:24px;fill:var(--red)}
.sector h3{margin:0 0 6px;font-size:18px;color:var(--red-2)}
.sector p{margin:0;color:var(--ink-2);font-size:14px;line-height:1.7}
.sector .eg{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);display:block}
.sector .eg b{color:var(--gold-d)}

/* ---------- Qualification cards ---------- */
.qual{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.qual .q{background:#fff;border:1px solid var(--line);border-left:5px solid var(--gold);
  border-radius:12px;padding:20px}
.qual .q h3{margin:4px 0 6px}
.qual .q p{margin:0;color:var(--ink-2);font-size:14px}
.qual .q .lv{color:var(--gold-d);font-weight:800;font-size:13px}

/* notice */
.notice{background:var(--cream);border:1px dashed var(--gold);padding:14px 18px;
  border-radius:10px;color:var(--ink);font-size:14px;margin:22px auto 0;
  max-width:900px;text-align:center}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow)}
.info-card .row{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line)}
.info-card .row:last-child{border:0}
.info-card .row .k{color:var(--muted);flex:0 0 84px;font-size:14px}
.info-card .row .v{color:var(--ink);font-weight:500}
.map{background:var(--cream);border:1px dashed var(--gold);border-radius:var(--radius);
  min-height:260px;display:flex;align-items:center;justify-content:center;
  color:var(--muted);text-align:center;padding:24px}

/* ---------- CTA band ---------- */
.cta-band{position:relative;overflow:hidden;color:#fff;text-align:center;padding:54px 24px;
  background:linear-gradient(105deg,#8a0a08,#c0160f 52%,#e02020)}
.cta-band::before{content:"❖ ❖ ❖";display:block;color:var(--gold);letter-spacing:12px;
  font-size:18px;margin-bottom:10px;opacity:.9}
.cta-band h2{color:#fff;border:0;padding:0;font-size:27px;margin:0 0 12px;font-weight:800}
.cta-band p{color:#ffe9d6;margin:0 auto 22px;max-width:680px}

/* ---------- Footer ---------- */
footer.site{background:linear-gradient(180deg,#8a0a08,#5e0605);color:#f6dfd0;
  padding:38px 0 22px;font-size:14px}
footer.site .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
footer.site h4{color:var(--gold);font-size:15px;margin:0 0 12px}
footer.site a{color:#f6dfd0}
footer.site a:hover{color:#fff}
footer .col p{margin:4px 0;color:#ebd3c2}
footer .bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:24px;padding-top:14px;
  text-align:center;color:#d9ae95;font-size:13px}
footer .bottom a{color:#d9ae95}

/* ---------- FAQ ---------- */
.faq details{border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:10px 0;background:#fff}
.faq summary{cursor:pointer;font-weight:600;font-size:16px;color:var(--ink);list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";color:var(--red);font-weight:800;margin-right:10px}
.faq details[open] summary::before{content:"\2212"}
.faq details p{margin:10px 0 2px;color:var(--ink-2)}

/* ---------- breadcrumb ---------- */
.crumb{font-size:13px;color:var(--muted);padding:16px 0 0}
.crumb a{color:var(--muted)}

/* ---------- Responsive ---------- */
@media(max-width:1100px){
  .cards.c4,.cards.c3,.qual,.sectors{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:900px){
  .nav{flex-wrap:wrap;gap:10px 14px;padding:10px 18px}
  .brand{order:1}
  .nav-cta{order:2;margin-left:auto}
  .navlinks{order:3;flex-basis:100%;flex-wrap:wrap;justify-content:flex-start;gap:4px;
    border-top:1px solid var(--line);padding-top:9px;margin-top:2px}
  .navlinks a{padding:7px 10px;font-size:14px}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid{grid-template-columns:1fr}
  .split.rev .media{order:0}
  .split .body .eyebrow,.split .body h2.sec,.split .body .sec-intro{text-align:center}
  .split .body h2.sec::after{margin:12px auto 0}
  .split .body .sec-intro{margin:0 auto 24px}
  .steps{grid-template-columns:1fr}
  footer.site .wrap{grid-template-columns:1fr 1fr}
  .hero .wrap,.hero.photo .wrap{padding:60px 20px 62px}
  .hero p.sub{font-size:16px}
}
@media(max-width:640px){
  .hero .wrap,.hero.photo .wrap{padding:52px 18px 56px}
  .hero h1{font-size:27px;line-height:1.38}
  .hero h1::after{width:88px;margin-top:16px}
  .hero p.sub{font-size:15px}
  .stats .wrap{grid-template-columns:repeat(2,1fr);gap:18px 0}
  .stat .n{width:68px;height:68px;font-size:16px}
  .cards.c4,.cards.c3,.cards.c2,.qual,.sectors,.gallery{grid-template-columns:1fr}
  h2.sec{font-size:23px}
  .band h2,.cta-band h2{font-size:23px}
  footer.site .wrap{grid-template-columns:1fr}
  .gallery img{height:220px}
}

/* 防移动端横向溢出 */
@media(max-width:640px){
  html,body{overflow-x:hidden}
  .wrap{max-width:100%;padding:0 16px}
  .hero h1,.hero p.sub,h2.sec,.band h2{word-break:break-word;overflow-wrap:anywhere}
  .hero .cta{flex-direction:column;align-items:stretch}
  .hero .cta .btn{width:100%;text-align:center}
}