/* ==========================================================================
   沪城建工集团有限公司 官方网站 — 样式表
   HCC | Hu Cheng Construction Engineering Group Co., Ltd.
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --navy-900:#071A32;
  --navy-800:#0B2545;
  --navy-700:#12345C;
  --navy-600:#1B4A7A;
  --steel-500:#5B7595;
  --steel-300:#9DB0C6;
  --steel-100:#E2E8F0;
  --line:#D9E1EA;
  --bg:#FFFFFF;
  --bg-soft:#F4F7FA;
  --bg-deep:#0A1E36;
  --accent:#FF6A13;
  --accent-dark:#E2560A;
  --accent-soft:#FFF1E6;
  --text:#17293D;
  --text-mid:#4A5D73;
  --text-light:#8496A9;
  --white:#FFFFFF;

  --shadow-sm:0 2px 8px rgba(11,37,69,.06);
  --shadow-md:0 10px 30px rgba(11,37,69,.10);
  --shadow-lg:0 24px 60px rgba(11,37,69,.16);

  --radius:4px;
  --radius-lg:8px;
  --maxw:1240px;
  --header-h:76px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --font:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
  --font-en:"Bahnschrift","DIN Alternate","Helvetica Neue",Arial,sans-serif;
}

/* ---------- 2. 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden;overflow-x:clip}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--bg);
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p{margin:0}
button{font-family:inherit;cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.hide{display:none !important}

/* ---------- 3. 顶部条 ---------- */
.topbar{background:var(--navy-900);color:var(--steel-300);font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px;gap:20px}
.topbar ul{display:flex;gap:22px;align-items:center}
.topbar a:hover{color:var(--white)}
.topbar .tb-name{color:var(--steel-100)}
.topbar .tb-name b{color:var(--accent);font-weight:600}

/* ---------- 4. 头部导航 ---------- */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .3s var(--ease)}
.header.scrolled{box-shadow:var(--shadow-md)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:24px}

.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{width:44px;height:44px;flex:none}
.logo-text b{display:block;font-size:19px;letter-spacing:.16em;color:var(--navy-800);font-weight:700;line-height:1.25}
.logo-text span{display:block;font-size:10px;letter-spacing:.22em;color:var(--text-light);font-family:var(--font-en);text-transform:uppercase}

.nav{display:flex;align-items:center;gap:2px}
.nav a{position:relative;padding:0 18px;height:var(--header-h);display:flex;align-items:center;font-size:15px;color:var(--text-mid);transition:color .25s}
.nav a::after{content:"";position:absolute;left:18px;right:18px;bottom:20px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav a:hover,.nav a.active{color:var(--navy-800)}
.nav a:hover::after,.nav a.active::after{transform:scaleX(1)}
.nav a.active{font-weight:600}

.header-cta{display:flex;align-items:center;gap:14px;flex-shrink:0}
.btn-phone{display:flex;align-items:center;gap:8px;color:var(--navy-800);font-family:var(--font-en);font-weight:600;font-size:16px;letter-spacing:.02em}
.btn-phone svg{width:17px;height:17px;fill:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 26px;background:var(--accent);color:#fff;font-size:14px;font-weight:600;letter-spacing:.06em;border-radius:var(--radius);transition:background .25s,transform .25s var(--ease),box-shadow .25s}
.btn:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,106,19,.3)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--navy-800)}
.btn-ghost:hover{background:var(--navy-800);border-color:var(--navy-800);color:#fff;box-shadow:none}

.menu-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.menu-toggle span{width:22px;height:2px;background:var(--navy-800);transition:transform .3s var(--ease),opacity .25s}
.menu-toggle.on span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.on span:nth-child(2){opacity:0}
.menu-toggle.on span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 5. 页面横幅 ---------- */
.pagehead{position:relative;background:var(--navy-800);overflow:hidden}
.pagehead::before{content:"";position:absolute;inset:0;background:
  radial-gradient(900px 380px at 88% 10%,rgba(255,106,19,.22),transparent 62%),
  linear-gradient(120deg,rgba(7,26,50,.96),rgba(18,52,92,.86));
}
.pagehead::after{content:"";position:absolute;inset:0;opacity:.16;background-image:
  linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:64px 64px;mask-image:linear-gradient(to bottom,#000,transparent 78%)}
.pagehead .wrap{position:relative;z-index:2;padding:74px 24px 66px}
.crumb{font-size:13px;color:var(--steel-300);margin-bottom:18px;display:flex;gap:9px;align-items:center}
.crumb a:hover{color:#fff}
.crumb span{opacity:.5}
.pagehead h1{font-size:clamp(30px,4.4vw,48px);color:#fff;font-weight:700;letter-spacing:.03em;line-height:1.22}
.pagehead .en{font-family:var(--font-en);color:var(--accent);font-size:13px;letter-spacing:.32em;text-transform:uppercase;margin-top:10px}

/* ---------- 6. 首页 Hero ---------- */
.hero{position:relative;min-height:min(88vh,760px);display:flex;align-items:center;overflow:hidden;background:var(--navy-900)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.04);animation:heroZoom 18s ease-out forwards}
@keyframes heroZoom{to{transform:scale(1)}}
.hero-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(6,20,38,.94) 0%,rgba(8,28,52,.80) 44%,rgba(9,33,60,.46) 100%)}
.hero-grid{position:absolute;inset:0;opacity:.14;background-image:
  linear-gradient(rgba(255,255,255,.55) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:80px 80px;mask-image:linear-gradient(to right,#000 0%,transparent 62%)}
.hero .wrap{position:relative;z-index:3;padding-top:96px;padding-bottom:96px}
.hero-tag{display:inline-flex;align-items:center;gap:10px;padding:7px 16px;border:1px solid rgba(255,255,255,.28);color:#fff;font-size:13px;letter-spacing:.14em;border-radius:100px;margin-bottom:26px;backdrop-filter:blur(6px)}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(255,106,19,.22)}
.hero h1{color:#fff;font-size:clamp(32px,5.6vw,66px);line-height:1.16;font-weight:700;letter-spacing:.02em;max-width:16em}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .lead{color:var(--steel-100);max-width:640px;margin-top:26px;font-size:clamp(15px,1.5vw,17px);line-height:1.95}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:38px}
.btn-lg{padding:15px 38px;font-size:15px}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff}
.btn-outline:hover{background:#fff;color:var(--navy-800);border-color:#fff;box-shadow:none}
.hero-scroll{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:4;color:rgba(255,255,255,.6);font-size:11px;letter-spacing:.24em;display:flex;flex-direction:column;align-items:center;gap:8px}
.hero-scroll::after{content:"";width:1px;height:34px;background:linear-gradient(rgba(255,255,255,.7),transparent);animation:scrollDot 2s infinite}
@keyframes scrollDot{0%{transform:scaleY(.2);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- 7. 数据条 ---------- */
.stats{background:var(--navy-900);border-top:1px solid rgba(255,255,255,.08)}
.stats .wrap{display:grid;grid-template-columns:repeat(5,1fr)}
.stat{padding:34px 20px;border-left:1px solid rgba(255,255,255,.09);position:relative}
.stat:first-child{border-left:none}
.stat::after{content:"";position:absolute;left:0;top:0;width:0;height:2px;background:var(--accent);transition:width .5s var(--ease)}
.stat:hover::after{width:100%}
.stat b{display:block;font-family:var(--font-en);font-size:clamp(28px,3.2vw,40px);color:#fff;font-weight:700;line-height:1.1;letter-spacing:.01em}
.stat b i{font-style:normal;font-size:.5em;color:var(--accent);margin-left:3px}
.stat span{display:block;color:var(--steel-300);font-size:13px;margin-top:8px;letter-spacing:.06em}

/* ---------- 8. 区块通用 ---------- */
.section{padding:96px 0}
.section.alt{background:var(--bg-soft)}
.section.dark{background:var(--navy-900);color:var(--steel-100)}
.sec-head{margin-bottom:54px;max-width:820px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--accent);font-size:12px;letter-spacing:.26em;text-transform:uppercase;font-family:var(--font-en);margin-bottom:14px}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent)}
.sec-head.center .eyebrow::before{display:none}
.sec-head h2{font-size:clamp(25px,3.4vw,40px);font-weight:700;color:var(--navy-800);line-height:1.3;letter-spacing:.02em}
.section.dark .sec-head h2{color:#fff}
.sec-head p{margin-top:16px;color:var(--text-mid);font-size:16px;line-height:1.9}
.section.dark .sec-head p{color:var(--steel-300)}
.sec-head .en{font-family:var(--font-en);font-size:12px;letter-spacing:.3em;color:var(--text-light);text-transform:uppercase;margin-top:10px}
.section.dark .sec-head .en{color:var(--steel-500)}

/* ---------- 9. 业务板块 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s}
.svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.svc-media{position:relative;height:206px;overflow:hidden;background:var(--navy-800)}
.svc-media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.svc-card:hover .svc-media img{transform:scale(1.07)}
.svc-media::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(7,26,50,.82),rgba(7,26,50,.05) 62%)}
.svc-idx{position:absolute;z-index:2;left:18px;bottom:12px;font-family:var(--font-en);font-size:38px;font-weight:700;color:rgba(255,255,255,.28);letter-spacing:-.02em}
.svc-body{padding:24px 24px 28px}
.svc-body h3{font-size:19px;color:var(--navy-800);font-weight:700;margin-bottom:8px}
.svc-body .en{font-family:var(--font-en);font-size:11px;letter-spacing:.2em;color:var(--text-light);text-transform:uppercase;margin-bottom:14px}
.svc-body p{color:var(--text-mid);font-size:14.5px;line-height:1.85}
.svc-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px;padding-top:16px;border-top:1px dashed var(--line)}
.svc-tags span{font-size:12px;color:var(--steel-500);background:var(--bg-soft);padding:4px 10px;border-radius:100px;transition:.25s}
.svc-card:hover .svc-tags span{background:var(--accent-soft);color:var(--accent-dark)}
.svc-more{margin-top:12px;display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:13.5px;font-weight:600;opacity:0;transform:translateX(-6px);transition:.35s var(--ease)}
.svc-card:hover .svc-more{opacity:1;transform:none}
.svc-more svg{width:14px;height:14px;fill:currentColor}

/* ---------- 10. 关于/简介 ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.about-visual{position:relative}
.about-visual img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
.about-visual::before{content:"";position:absolute;left:-16px;top:-16px;width:110px;height:110px;border:3px solid var(--accent);border-radius:var(--radius-lg);opacity:.5;z-index:-1}
.about-badge{position:absolute;right:-18px;bottom:34px;background:var(--navy-800);color:#fff;padding:20px 26px;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-width:250px}
.about-badge b{display:block;font-family:var(--font-en);font-size:26px;color:var(--accent);line-height:1.2}
.about-badge span{font-size:13px;color:var(--steel-300);line-height:1.6}
.about-text p{color:var(--text-mid);font-size:15.5px;line-height:2;margin-bottom:18px}
.about-text p strong{color:var(--navy-800);font-weight:600}
.about-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 24px;margin-top:26px}
.about-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-mid);align-items:flex-start}
.about-list svg{width:17px;height:17px;flex:none;margin-top:5px;fill:var(--accent)}

.fact-table{width:100%;border-collapse:collapse;margin-top:30px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.fact-table tr:nth-child(odd){background:var(--bg-soft)}
.fact-table td{padding:13px 20px;font-size:14px;border-bottom:1px solid var(--line);vertical-align:top}
.fact-table td:first-child{width:132px;color:var(--text-light);font-size:13px;letter-spacing:.04em;white-space:nowrap}
.fact-table td:last-child{color:var(--navy-800);font-weight:500}
.fact-table tr:last-child td{border-bottom:none}

/* ---------- 11. 资质矩阵 ---------- */
.qual-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.qual{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px 22px;transition:.35s var(--ease);position:relative;overflow:hidden}
.qual::before{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--accent);transition:width .45s var(--ease)}
.qual:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.qual:hover::before{width:100%}
.qual-ico{width:44px;height:44px;border-radius:10px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.qual-ico svg{width:23px;height:23px;fill:var(--accent)}
.qual h4{font-size:16px;color:var(--navy-800);font-weight:600;margin-bottom:6px;line-height:1.5}
.qual .lv{display:inline-block;font-size:12px;padding:3px 10px;background:var(--navy-800);color:#fff;border-radius:100px;letter-spacing:.06em;margin-top:4px}
.qual p{font-size:13.5px;color:var(--text-mid);margin-top:12px;line-height:1.8}
.qual-group{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;margin-bottom:22px}
.qual-group>h3{font-size:20px;color:var(--navy-800);margin-bottom:6px;display:flex;align-items:center;gap:10px}
.qual-group>h3::before{content:"";width:4px;height:20px;background:var(--accent);border-radius:2px}
.qual-group>p{color:var(--text-light);font-size:13.5px;margin-bottom:24px;padding-left:14px}
.qual-group .qual-grid{grid-template-columns:repeat(4,1fr)}
.qual-group--wide .qual-grid{grid-template-columns:repeat(2,1fr)}
@media (max-width:1080px){
  .qual-grid,.qual-group .qual-grid,.qual-group--wide .qual-grid{grid-template-columns:repeat(2,1fr)}
}

/* ---------- 12. 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.flow::before{content:"";position:absolute;top:26px;left:12.5%;right:12.5%;height:1px;background:repeating-linear-gradient(90deg,var(--line) 0 8px,transparent 8px 16px)}
.flow-item{text-align:center;padding:0 18px;position:relative}
.flow-num{width:54px;height:54px;border-radius:50%;background:#fff;border:2px solid var(--navy-800);color:var(--navy-800);font-family:var(--font-en);font-weight:700;font-size:20px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;position:relative;z-index:2;transition:.35s var(--ease)}
.flow-item:hover .flow-num{background:var(--accent);border-color:var(--accent);color:#fff;transform:scale(1.06)}
.flow-item h4{font-size:16.5px;color:var(--navy-800);margin-bottom:8px}
.flow-item p{font-size:14px;color:var(--text-mid);line-height:1.8}

/* ---------- 13. 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--navy-800);min-height:280px;display:flex;align-items:flex-end}
.case img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.case::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(6,20,38,.94) 0%,rgba(6,20,38,.55) 45%,rgba(6,20,38,.16) 100%)}
.case-body{position:relative;z-index:2;padding:28px 26px;color:#fff;width:100%}
.case-body .cat{font-size:11px;letter-spacing:.2em;color:var(--accent);text-transform:uppercase;font-family:var(--font-en);margin-bottom:10px}
.case-body h3{font-size:20px;font-weight:600;margin-bottom:8px}
.case-body p{font-size:13.5px;color:var(--steel-300);line-height:1.8}
.case-meta{display:flex;gap:16px;margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,.16);font-size:12.5px;color:var(--steel-300)}
.case-meta span{display:flex;align-items:center;gap:6px}
.case-meta svg{width:13px;height:13px;fill:var(--accent)}

.case-tall{grid-column:span 2;min-height:340px}
.case-tall .case-body h3{font-size:24px}

/* ---------- 14. 新闻 ---------- */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px;transition:.35s var(--ease);display:flex;flex-direction:column}
.news:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:transparent}
.news-date{display:flex;align-items:center;gap:10px;font-family:var(--font-en);font-size:12.5px;color:var(--text-light);letter-spacing:.06em;margin-bottom:16px}
.news-date b{font-size:26px;color:var(--accent);font-weight:700;line-height:1}
.news h3{font-size:17.5px;color:var(--navy-800);line-height:1.55;margin-bottom:12px;transition:color .25s}
.news:hover h3{color:var(--accent-dark)}
.news p{font-size:14px;color:var(--text-mid);line-height:1.85;flex:1}
.news-more{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13.5px;color:var(--accent);display:flex;align-items:center;gap:6px;font-weight:600}
.news-more svg{width:13px;height:13px;fill:currentColor;transition:transform .3s var(--ease)}
.news:hover .news-more svg{transform:translateX(4px)}

/* ---------- 15. 团队/理念 ---------- */
.culture-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.culture{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:30px 26px;transition:.35s var(--ease)}
.culture:hover{background:rgba(255,255,255,.08);transform:translateY(-4px);border-color:rgba(255,106,19,.4)}
.culture .cn{font-size:26px;font-weight:700;color:#fff;letter-spacing:.1em;margin-bottom:6px}
.culture .en{font-family:var(--font-en);font-size:11px;letter-spacing:.24em;color:var(--accent);text-transform:uppercase;margin-bottom:16px}
.culture p{font-size:14px;color:var(--steel-300);line-height:1.85}

/* ---------- 16. 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.contact-list{display:grid;gap:14px}
.contact-item{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px 22px;transition:.3s var(--ease)}
.contact-item:hover{border-color:var(--accent);box-shadow:var(--shadow-sm)}
.contact-ico{width:42px;height:42px;flex:none;border-radius:9px;background:var(--navy-800);display:flex;align-items:center;justify-content:center}
.contact-ico svg{width:19px;height:19px;fill:#fff}
.contact-item dt{font-size:12.5px;color:var(--text-light);letter-spacing:.1em;margin-bottom:5px}
.contact-item dd{margin:0;font-size:16px;color:var(--navy-800);font-weight:600;line-height:1.6}
.contact-item dd small{display:block;font-size:13px;color:var(--text-mid);font-weight:400;margin-top:4px}

.form{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px}
.form h3{font-size:20px;color:var(--navy-800);margin-bottom:6px}
.form .tip{font-size:13.5px;color:var(--text-light);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;color:var(--text-mid);margin-bottom:7px}
.field input,.field textarea,.field select{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius);font-family:inherit;font-size:14.5px;color:var(--text);background:#fff;transition:.25s}
.field textarea{resize:vertical;min-height:104px}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,106,19,.12)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form .btn{width:100%;padding:14px}

.map-embed{width:100%;height:340px;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-soft)}

/* ---------- 17. CTA 条 ---------- */
.cta{position:relative;background:var(--navy-800);overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 320px at 12% 50%,rgba(255,106,19,.24),transparent 60%)}
.cta .wrap{position:relative;z-index:2;padding:64px 24px;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta h3{color:#fff;font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.4}
.cta p{color:var(--steel-300);margin-top:10px;font-size:15px;max-width:640px}

/* ---------- 18. 页脚 ---------- */
.footer{background:var(--navy-900);color:var(--steel-300);padding:66px 0 0;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px}
.foot-brand .logo-text b{color:#fff}
.foot-brand .logo-text span{color:var(--steel-500)}
.foot-brand p{margin-top:18px;line-height:1.9;color:var(--steel-500);font-size:13.5px;max-width:330px}
.foot-h{font-size:15px;color:#fff;font-weight:600;margin-bottom:18px;position:relative;padding-bottom:12px}
.foot-h::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--accent)}
.foot-links li{margin-bottom:10px}
.foot-links a{color:var(--steel-500);transition:.25s}
.foot-links a:hover{color:var(--accent);padding-left:4px}
.foot-contact li{margin-bottom:12px;line-height:1.7;color:var(--steel-500)}
.foot-contact b{color:var(--steel-100);font-weight:500}
.foot-contact .tel{font-family:var(--font-en);font-size:20px;color:#fff;letter-spacing:.02em;display:block;margin-bottom:4px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--steel-500)}
.foot-bottom a{color:var(--steel-300)}
.foot-bottom a:hover{color:var(--accent)}
.beian{display:inline-flex;align-items:center;gap:8px}

/* ---------- 18.5 进场动画（仅在 JS 可用时启用，避免内容不可见） ---------- */
.js [data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js [data-reveal].is-visible{opacity:1;transform:none}
.js [data-reveal="left"]{transform:translateX(-30px)}
.js [data-reveal="right"]{transform:translateX(30px)}
.js [data-reveal="scale"]{transform:scale(.96)}

/* ---------- 19. 响应式 ---------- */
@media (max-width:1080px){
  .qual-grid,.qual-group .qual-grid{grid-template-columns:repeat(2,1fr)}
  .svc-grid,.case-grid,.news-list,.culture-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr);gap:34px 0}
  .flow::before{display:none}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:36px}
}
@media (max-width:860px){
  .topbar .tb-left{display:none}
  /* 移动端改为顶部抽屉，避免横向平移造成整页横向滚动 */
  .nav{position:fixed;top:0;left:0;right:0;height:100vh;height:100dvh;
    padding:calc(var(--header-h) + 30px) 24px 40px;background:var(--navy-900);
    flex-direction:column;align-items:stretch;gap:0;overflow-y:auto;
    transform:translateY(-101%);transition:transform .38s var(--ease);z-index:101}
  .nav.open{transform:translateY(0)}
  .nav a{height:auto;padding:17px 4px;color:var(--steel-100);font-size:17px;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav a::after{display:none}
  .nav a.active{color:var(--accent)}
  .menu-toggle{display:flex;position:relative;z-index:102}
  .logo{position:relative;z-index:103}
  .header-cta .btn-phone{display:none}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:38px}
  .about-visual::before{display:none}
  .about-badge{right:12px}
  .section{padding:68px 0}
  .stats .wrap{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(odd){border-left:none}
  .stat{border-top:1px solid rgba(255,255,255,.09)}
  .stat:nth-child(1),.stat:nth-child(2){border-top:none}
  .sec-head{margin-bottom:38px}
}
@media (max-width:620px){
  .svc-grid,.case-grid,.news-list,.qual-grid,.qual-group .qual-grid,.culture-grid,.foot-grid{grid-template-columns:1fr}
  .case-tall{grid-column:span 1}
  .flow{grid-template-columns:1fr}
  .about-list{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .hero .wrap{padding-top:72px;padding-bottom:72px}
  .cta .wrap{flex-direction:column;align-items:flex-start}
  .wrap{padding:0 18px}
  .pagehead .wrap{padding:54px 18px 48px}
  .logo-text b{font-size:16px}
  .logo-text span{font-size:9px}
  .logo-mark{width:38px;height:38px}
  .stat b{font-size:26px}
  .about-badge{position:static;margin-top:16px;max-width:none}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

@media print{
  .header,.topbar,.footer,.cta,.hero-scroll{display:none}
}