/* ==============================================================
   shibogonglu.com 官网 · 工程稳重蓝 · 共享样式
   大连世博公路工程有限公司
   ============================================================== */

/* ============ Tokens ============ */
:root{
  --navy:#071628; --navy-2:#0C2240; --navy-3:#13345C;
  --brand:#2458E6; --brand-2:#5A8CF0; --brand-soft:#EAF1FE;
  --teal:#28B8B8; --gold:#D9A441;
  --ink:#0D1726; --ink-600:#4C5868; --ink-400:#8B95A5;
  --line:#E3E8F0; --bg:#F6F8FC; --white:#fff;
  --shadow:0 16px 44px rgba(7,22,40,.10);
  --shadow-sm:0 6px 18px rgba(7,22,40,.06);
  --shadow-lg:0 34px 80px rgba(7,22,40,.22);
  --maxw:1240px;
}

/* ============ Reset ============ */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--white);line-height:1.65;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul{list-style:none}

/* ============ Layout ============ */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* ============ Typography helpers ============ */
h1,h2,h3{line-height:1.2;letter-spacing:-.02em;color:var(--ink)}
.kicker{font-size:12.5px;font-weight:700;letter-spacing:.28em;text-transform:uppercase;color:var(--brand-2)}
.lead{font-size:17px;color:var(--ink-600);line-height:1.75}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:600;padding:12px 24px;border-radius:8px;cursor:pointer;border:1px solid transparent;transition:.2s;white-space:nowrap;font-family:inherit}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2);transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12)}
.btn-line{background:transparent;border-color:#C9D4E4;color:var(--navy-2)}
.btn-line:hover{border-color:var(--brand);color:var(--brand)}
.btn-lg{padding:14px 30px;font-size:16px}

/* ============ Header (sticky) ============ */
header.site{position:fixed;top:0;left:0;right:0;z-index:60;background:linear-gradient(180deg,rgba(7,22,40,.72),transparent);transition:.3s}
header.site.solid{background:rgba(7,22,40,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:78px}
.logo{display:flex;align-items:center;gap:12px;color:#fff}
.logo svg{width:42px;height:42px;flex:0 0 42px}
.logo b{display:block;font-size:18px;font-weight:700;letter-spacing:.04em}
.logo span{display:block;font-size:9.5px;letter-spacing:.3em;color:#7FA3DF}
.menu{display:flex;gap:36px}
.menu a{color:#B7C6DE;font-size:15px;letter-spacing:.02em;transition:.2s;display:inline-flex;align-items:center}
.menu a:hover{color:#fff}
.menu a.on{color:#fff;font-weight:600}
.menu a.on::after{content:"";display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--brand-2);margin-left:6px}
@media(max-width:980px){.menu{display:none}}

/* ============ Footer ============ */
footer{background:#05101F;color:#7E93B2;padding:70px 0 30px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:44px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.09)}
.foot-brand b{color:#fff;font-size:19px;display:block;margin-bottom:16px;letter-spacing:.02em}
.foot-brand p{font-size:14px;line-height:1.85;max-width:340px}
.foot-col h4{color:#fff;font-size:13.5px;letter-spacing:.1em;margin-bottom:18px;text-transform:uppercase}
.foot-col a{display:block;font-size:14px;padding:7px 0;color:#7E93B2;transition:.2s}
.foot-col a:hover{color:#fff}
.foot-copy{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:26px;font-size:13px;color:#54678A}
@media(max-width:980px){.foot-grid{grid-template-columns:1fr 1fr}}

/* ============ Inner page hero ============ */
.page-hero{position:relative;background:linear-gradient(160deg,#0C2240 0%,#071628 70%);color:#fff;padding:200px 0 110px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;mask-image:radial-gradient(circle at 50% 40%,#000,transparent 75%);pointer-events:none}
.page-hero .wrap{position:relative;z-index:1}
.page-hero .kicker{color:#7FB0FF;margin-bottom:18px}
.page-hero h1{color:#fff;font-size:54px;font-weight:800;margin:14px 0 18px;max-width:840px}
.page-hero .lead{color:#9DB2D4;max-width:680px}
.page-hero .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:#7E93B2;margin-bottom:20px}
.page-hero .crumb a{color:#7E93B2}
.page-hero .crumb a:hover{color:#fff}
.page-hero .crumb i{color:#54678A;margin:0 6px;font-style:normal;font-size:12px}
@media(max-width:980px){.page-hero{padding:130px 0 70px}.page-hero h1{font-size:32px}}

/* ============ Section ============ */
section{padding:96px 0}
section.alt{background:var(--bg)}
section.dark{background:var(--navy);color:#fff}
section.dark h1,section.dark h2,section.dark h3{color:#fff}
section.dark .kicker{color:#7FB0FF}
section.dark .lead,section.dark p{color:#9DB2D4}
.head{max-width:760px;margin-bottom:54px}
.head.center{margin:0 auto 54px;text-align:center}
.head h2{font-size:40px;margin:14px 0 14px}
.head p{font-size:17px;color:var(--ink-600)}
.head.center p{margin:0 auto}
@media(max-width:980px){section{padding:64px 0}.head h2{font-size:28px}}

/* ============ Reusable primitives ============ */
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.row-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.row-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:980px){.row-2,.row-3,.row-4{grid-template-columns:1fr;gap:28px}}

.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px;transition:.2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#D3DEF0}
.card .ic{width:48px;height:48px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;margin-bottom:18px}
.card h3{font-size:18px;margin-bottom:10px}
.card p{font-size:14px;color:var(--ink-600)}

.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tags span{border:1px solid var(--line);border-radius:100px;padding:8px 18px;font-size:13.5px;color:var(--ink-600);background:#fff}

.numlist{display:grid;gap:0;margin-top:34px}
.numlist li{display:grid;grid-template-columns:60px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--line)}
.numlist li:last-child{border-bottom:0}
.numlist .n{font-size:32px;font-weight:800;color:#D6DFEC;letter-spacing:-.03em;line-height:1.1}
.numlist .tx b{display:block;font-size:18px;color:var(--ink);margin-bottom:6px}
.numlist .tx p{font-size:14.5px;color:var(--ink-600);line-height:1.7}

.bar-list{display:grid;gap:0;margin-top:20px}
.bar-list li{display:grid;grid-template-columns:200px 1fr 110px;gap:24px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
.bar-list li:last-child{border-bottom:0}
.bar-list b{font-size:17px;font-weight:700}
.bar-list .desc{font-size:14px;color:var(--ink-600)}
.bar-list .v{text-align:right;font-size:13.5px;color:var(--brand);font-weight:700}
@media(max-width:980px){.bar-list li{grid-template-columns:1fr;gap:6px}.bar-list .v{text-align:left}}

.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start}
@media(max-width:980px){.contact-grid{grid-template-columns:1fr}}

.mini-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px}
.mini-stats .b{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px}
.mini-stats .b b{display:block;font-size:30px;font-weight:800;color:var(--navy-2);line-height:1.1}
.mini-stats .b b i{font-style:normal;font-size:13px;font-weight:600;color:var(--ink-400);margin-left:3px}
.mini-stats .b span{font-size:13px;color:var(--ink-600);margin-top:6px;display:block}
@media(max-width:980px){.mini-stats{grid-template-columns:1fr 1fr}}

.cform{display:grid;gap:18px;margin-top:32px}
.cform .field{display:grid;gap:8px}
.cform label{font-size:13px;font-weight:700;color:var(--ink-600);letter-spacing:.04em}
.cform .req{color:#E04444;margin-left:2px}
.cform input,.cform textarea,.cform select{padding:12px 14px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:15px;background:#fff;color:var(--ink);transition:.2s;width:100%}
.cform input:focus,.cform textarea:focus,.cform select:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px rgba(36,88,230,.12)}
.cform textarea{resize:vertical;min-height:130px}
.cform .row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cform .hint{font-size:12.5px;color:var(--ink-400);margin-top:4px}
.cform .submit{display:flex;align-items:center;gap:14px;margin-top:8px}
@media(max-width:680px){.cform .row{grid-template-columns:1fr}}

.dark-card{background:linear-gradient(140deg,#0C2240,#071628);color:#fff;border-radius:18px;padding:40px;position:relative;overflow:hidden}
.dark-card::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(40,184,184,.22),transparent 70%)}
.dark-card h3{color:#fff;margin-bottom:22px;font-size:20px;position:relative}
.dark-card .ci{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.12);position:relative}
.dark-card .ci:last-of-type{border-bottom:0}
.dark-card .ci .ic{flex:0 0 42px;width:42px;height:42px;border-radius:11px;background:rgba(255,255,255,.08);color:#7FB0FF;display:grid;place-items:center}
.dark-card .ci b{display:block;font-size:12.5px;color:#7FA3DF;font-weight:600;letter-spacing:.04em;text-transform:uppercase}
.dark-card .ci span{font-size:15px;color:#fff}
.dark-card .btn-primary{margin-top:26px;position:relative;width:100%;justify-content:center}

.mapbox{height:320px;background:linear-gradient(160deg,#13345C,#071628);border-radius:14px;display:grid;place-items:center;color:#7FA3DF;border:1px solid var(--line);position:relative;overflow:hidden;margin-top:24px}
.mapbox::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:32px 32px}
.mapbox .pin{position:relative;z-index:1;text-align:center}
.mapbox .pin b{color:#fff;font-size:18px;display:block;margin-bottom:6px}
/* 地图容器（腾讯地图嵌入） */
.mapbox.on{display:block}
.mapbox.on::before{display:none}
.mapbox #map{position:absolute;inset:0;width:100%;height:100%}
.mapbox .mapfb{position:relative;z-index:1;text-align:center;padding:0 24px}
.mapbox .mapfb b{color:#fff;font-size:19px;display:block;margin-bottom:8px}
.mapbox .mapfb small{color:#9FB8D8;font-size:13px;display:block;margin-bottom:18px;letter-spacing:.02em}
.mapbox .mapfb .btn{display:inline-flex}

/* ==============================================================
   INDEX PAGE (Home) — 方案 C 全屏大气型
   ============================================================== */

/* Hero */
.hero{min-height:94vh;position:relative;display:flex;align-items:center;overflow:hidden;background:linear-gradient(160deg,#0C2240 0%,#071628 62%);color:#fff}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg svg{width:100%;height:100%}
.hero::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,rgba(7,22,40,.94) 0%,rgba(7,22,40,.72) 42%,rgba(7,22,40,.2) 100%)}
.hero .wrap{position:relative;z-index:2;width:100%;padding-top:110px;padding-bottom:70px}
.hero h1{font-size:76px;font-weight:800;color:#fff;letter-spacing:-.035em;line-height:1.06;max-width:900px}
.hero h1 .thin{font-weight:300;color:#9FB8D8}
.hero .kicker{margin-bottom:18px}
.hero-actions{display:flex;gap:16px;margin-top:24px}
.hero-slogan{margin:34px 0 30px;max-width:680px}
.hero-slogan p:first-child{font-size:32px;font-weight:700;color:#fff;letter-spacing:-.01em;line-height:1.3;margin:0}
.hero-slogan p:last-child{font-size:19px;color:#B4C6DE;margin-top:12px;letter-spacing:.02em}
.hero-scroll{position:absolute;bottom:38px;left:50%;transform:translateX(-50%);z-index:2;color:#6E86A8;font-size:12px;letter-spacing:.2em;display:flex;flex-direction:column;align-items:center;gap:8px}
.hero-scroll i{width:1px;height:34px;background:linear-gradient(#6E86A8,transparent);display:block}
@media(max-width:1080px){.hero h1{font-size:54px}.hero-slogan p:first-child{font-size:24px}.hero-slogan p:last-child{font-size:16px}}
@media(max-width:680px){.hero h1{font-size:38px}.hero-slogan p:first-child{font-size:20px}}

/* Stats strip */
.hstrip{background:rgba(12,34,64,.96);border-top:1px solid rgba(255,255,255,.09);position:relative;z-index:3}
.hstrip .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.hs{padding:38px 28px;border-right:1px solid rgba(255,255,255,.09)}
.hs:last-child{border-right:0}
.hs b{display:block;font-size:44px;font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1}
.hs b i{font-style:normal;font-size:17px;color:var(--brand-2);font-weight:700;margin-left:4px}
.hs span{display:block;margin-top:12px;font-size:13.5px;color:#8FA6C6}
@media(max-width:980px){.hstrip .wrap{grid-template-columns:1fr 1fr}.hs{border-right:0;border-bottom:1px solid rgba(255,255,255,.09)}}

/* Business list (大编号) */
.biz-wrap{background:#fff}
.biz-list{border-top:1px solid var(--line)}
.biz-row{display:grid;grid-template-columns:120px 1.1fr 1.4fr 60px;gap:32px;align-items:center;padding:38px 0;border-bottom:1px solid var(--line);transition:.25s}
.biz-row:hover{background:linear-gradient(90deg,rgba(36,88,230,.035),transparent);padding-left:20px}
.biz-row .no{font-size:40px;font-weight:800;color:#D6DFEC;letter-spacing:-.03em;transition:.25s}
.biz-row:hover .no{color:var(--brand)}
.biz-row h3{font-size:23px;font-weight:700}
.biz-row p{font-size:15px;color:var(--ink-600);max-width:640px}
.biz-row .arw{width:46px;height:46px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-400);justify-self:end;transition:.25s}
.biz-row:hover .arw{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateX(4px)}
.biz-row>a{display:contents}
@media(max-width:980px){.biz-row{grid-template-columns:60px 1fr;gap:14px}.biz-row p,.biz-row .arw{display:none}}

/* Product */
.prod-wrap{background:var(--bg);position:relative;overflow:hidden}
.prod-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.prod h2{font-size:44px;font-weight:800;margin:18px 0 20px}
.prod .tt{font-size:17px;color:var(--ink-600);margin-bottom:36px;max-width:520px}
.plist{display:grid;gap:0;margin-bottom:38px}
.pitem{display:flex;gap:18px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line)}
.pitem .n{flex:0 0 34px;font-size:13px;font-weight:800;color:var(--brand);letter-spacing:.06em}
.pitem .tx{font-size:16px;color:var(--ink)}
.pitem .d{margin-left:auto;font-size:13px;color:var(--ink-400)}
.mockup{position:relative}
.mock-frame{background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);overflow:hidden;border:1px solid #E6EBF3}
.mock-head{background:var(--navy-2);padding:14px 18px;display:flex;align-items:center;justify-content:space-between}
.mock-head b{color:#fff;font-size:13.5px;font-weight:600}
.mock-head .lt{display:flex;gap:6px}
.mock-head .lt i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.28);display:block}
.mock-body{padding:22px}
.mrow{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px}
.mcard{background:var(--bg);border:1px solid var(--line);border-radius:11px;padding:16px}
.mcard small{display:block;font-size:11.5px;color:var(--ink-400);margin-bottom:7px}
.mcard b{font-size:23px;font-weight:800;color:var(--navy-2)}
.mcard b i{font-style:normal;font-size:11.5px;font-weight:600;color:var(--ink-400);margin-left:2px}
.mchart{display:flex;align-items:flex-end;gap:12px;height:120px;padding:16px 4px 0;border-top:1px dashed var(--line)}
.mchart span{flex:1;border-radius:5px 5px 0 0;background:linear-gradient(180deg,#8AB0F2,var(--brand))}
.mchart span:nth-child(4n){background:linear-gradient(180deg,#7CDADA,var(--teal))}
.mock-tag{position:absolute;background:var(--navy-2);color:#fff;border-radius:11px;padding:13px 18px;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:11px}
.mock-tag b{font-size:16px;font-weight:800;display:block}
.mock-tag small{font-size:11px;color:#9FB8D8}
.mt1{right:-24px;top:26px}
.mt2{left:-26px;bottom:38px}
@media(max-width:980px){.prod-grid{grid-template-columns:1fr;gap:48px}.mockup{display:none}}

/* Sites (大网格) */
.sites-wrap{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.sites-wrap::before{content:"";position:absolute;left:50%;top:-40%;width:900px;height:900px;transform:translateX(-50%);background:radial-gradient(circle,rgba(36,88,230,.28),transparent 62%);pointer-events:none}
.sites-wrap .head h2{color:#fff}
.sites-wrap .head p{color:#9DB2D4}
.site-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid rgba(255,255,255,.13);border-left:1px solid rgba(255,255,255,.13);position:relative;z-index:1}
.site{padding:44px 26px;border-right:1px solid rgba(255,255,255,.13);border-bottom:1px solid rgba(255,255,255,.13);transition:.28s;position:relative;display:block}
.site:hover{background:rgba(255,255,255,.055)}
.site .idx{font-size:12px;color:#6E86A8;letter-spacing:.16em;margin-bottom:26px}
.site h3{font-size:19px;color:#fff;margin-bottom:8px}
.site span{font-size:13px;color:#8FA6C6}
.site .bar{position:absolute;left:26px;right:26px;bottom:26px;height:2px;background:rgba(255,255,255,.12);border-radius:2px;overflow:hidden}
.site .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand-2),var(--teal));width:0;transition:.5s}
.site:hover .bar i{width:76%}
@media(max-width:980px){.site-grid{grid-template-columns:1fr 1fr;border-left:0}}

/* About CTA */
.about-cta{background:var(--bg)}
.cta-box{background:linear-gradient(120deg,#12325C,#0A1E3A);border-radius:22px;padding:56px 60px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:36px;position:relative;overflow:hidden;box-shadow:var(--shadow-lg)}
.cta-box::after{content:"";position:absolute;right:-60px;bottom:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(25,179,179,.35),transparent 70%)}
.cta-box h2{font-size:30px;font-weight:800;margin-bottom:10px;color:#fff}
.cta-box p{color:#AFC2DC;font-size:15.5px;max-width:560px;position:relative;z-index:1}
.cta-box>div{position:relative;z-index:1}
@media(max-width:980px){.cta-box{flex-direction:column;align-items:flex-start;padding:36px}.cta-box h2{font-size:24px}}