/* ============================================================
   Shengjia site v2 — shared stylesheet
   设计语言：深海军蓝 #0b172e + 香槟金 #c9a227（自托管 Inter，零外链）
   注：CSS 内 url() 相对本文件（assets/），图片统一 ../images/
   ============================================================ */
:root{
  --navy:#0b172e; --navy-2:#122142;
  --accent:#c9a227; --accent-dark:#8a6d14;
  --sky:#9adbff; --ink:#1a1a1a; --muted:#5d6c7b;
  --bg-light:#fafafa; --bg-line:#e9edf2; --radius:18px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{font-family:'Inter',-apple-system,'Segoe UI',Roboto,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);background:#fff;line-height:1.6;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.pill{display:inline-block;padding:14px 30px;border-radius:999px;font-weight:700;font-size:15px;transition:.25s;cursor:pointer;border:0}
.pill-pink{background:var(--accent);color:var(--navy)}
.pill-pink:hover{background:var(--accent-dark);transform:translateY(-2px)}
.pill-ghost{background:rgba(255,255,255,.06);color:#fff;border:1.5px solid rgba(255,255,255,.4);backdrop-filter:blur(6px)}
.pill-ghost:hover{border-color:#fff}
.pill-dark{background:var(--navy);color:#fff}
.pill-dark:hover{background:var(--navy-2);transform:translateY(-2px)}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-dark);margin-bottom:14px}
h2.sec{font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1.12;letter-spacing:-.01em}
.sec-head{max-width:680px;margin:0 auto 52px;text-align:center}
.sec-head p{color:var(--muted);margin-top:14px;font-size:16.5px}

.fade{opacity:0;transform:translateY(30px);transition:all .7s ease}
.fade.on{opacity:1;transform:none}

/* 装饰层 */
.dots{position:absolute;width:180px;height:180px;background-image:radial-gradient(rgba(11,23,46,.16) 2px,transparent 2px);background-size:18px 18px;pointer-events:none}
.dots.light{background-image:radial-gradient(rgba(255,255,255,.18) 2px,transparent 2px)}

/* ---- announce + nav ---- */
.announce{background:var(--accent);color:var(--navy);text-align:center;font-size:13.5px;padding:8px 16px}
.announce b{background:rgba(255,255,255,.2);border-radius:999px;padding:2px 10px;margin-right:8px;font-size:12px;letter-spacing:.06em;text-transform:uppercase}
nav{position:sticky;top:0;z-index:60;background:rgba(11,23,46,.9);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}
.nav-in{max-width:1180px;margin:0 auto;padding:0 24px;height:66px;display:flex;align-items:center;justify-content:space-between}
.logo{color:#fff;font-weight:800;font-size:20px}
.logo span{color:var(--accent)}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:#c8d2e0;font-size:14.5px;font-weight:500}
.nav-links a:hover{color:#fff}
.nav-cta{padding:10px 22px;font-size:14px}
.lang-toggle{margin-left:4px;border:1px solid rgba(255,255,255,.45);background:transparent;color:#fff;padding:7px 14px;border-radius:20px;font-size:13px;cursor:pointer;font-family:inherit;font-weight:500}
.lang-toggle:hover{border-color:#fff}
.burger{display:none;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}

/* ---- HERO：大图打底 + 悬浮玻璃卡 ---- */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;color:#fff;background:var(--navy)}
.hero .bg{position:absolute;inset:0;background:url('../images/lujiazui.jpg') center/cover no-repeat}
.hero .shade{position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,23,46,.94) 0%,rgba(11,23,46,.82) 45%,rgba(11,23,46,.45) 100%)}
.hero .blobs{position:absolute;inset:0;overflow:hidden}
.hero .blobs::before{content:'';position:absolute;right:-160px;top:-160px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(201,162,39,.32),transparent 65%)}
.hero-in{position:relative;z-index:2;padding:130px 0 190px;max-width:800px}
.hero h1{font-size:clamp(40px,5.8vw,68px);font-weight:800;line-height:1.06;letter-spacing:-.015em;text-shadow:0 4px 30px rgba(0,0,0,.35)}
.hero h1 em{font-style:normal;color:var(--sky)}
.hero p.sub{margin:24px 0 36px;font-size:18.5px;color:#c5d0e2;max-width:560px}
.hero .ctas{display:flex;gap:16px;flex-wrap:wrap}
/* 悬浮统计卡：压在 hero 底边，形成层级
   ⚠️ 卡片下沿落在白底上，必须用深色玻璃底，否则白字不可读 */
.stat-bar{position:absolute;left:0;right:0;bottom:-64px;z-index:5}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{background:rgba(11,23,46,.78);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius);padding:24px 26px;color:#fff;box-shadow:0 24px 50px rgba(11,23,46,.35)}
.stat .n{font-size:30px;font-weight:800;line-height:1.1}
.stat .n i{font-style:normal;color:var(--sky)}
.stat .l{font-size:13.5px;color:#c3cfdf;margin-top:4px}

/* ---- 品牌跑马灯：三行，左/右/左 ---- */
.brands{padding:110px 0 90px;background:#fff}
.brands .cap{text-align:center;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:30px;font-weight:800}
.mrow{overflow:hidden;position:relative;-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.mrow + .mrow{margin-top:18px}
.mtrack{display:flex;width:max-content;animation:scrollx 38s linear infinite}
.mrow.rev .mtrack{animation-direction:reverse;animation-duration:46s}
.mrow.slow .mtrack{animation-duration:42s}
.mrow:hover .mtrack{animation-play-state:paused}
@keyframes scrollx{to{transform:translateX(-50%)}}
.mcard{margin-right:20px;background:#fff;border:1px solid var(--bg-line);border-radius:12px;width:156px;height:84px;flex:none;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px rgba(11,23,46,.05)}
.mcard img{max-width:112px;max-height:46px;width:auto;height:auto;object-fit:contain;display:block}

/* ---- SPLIT：左大图+悬浮徽章 / 右短清单 ---- */
.split{padding:90px 0;background:#fff;position:relative}
.split .dots{top:40px;left:24px}
.split-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:70px;align-items:center}
.split-img{position:relative}
.split-img .ph{border-radius:22px;box-shadow:0 30px 70px rgba(11,23,46,.25)}
.split-img::before{content:'';position:absolute;left:-22px;bottom:-22px;width:62%;height:62%;background:linear-gradient(135deg,var(--accent),#8a6d14);border-radius:22px;z-index:-1;opacity:.92}
.badge-float{position:absolute;right:-18px;top:34px;background:var(--navy);color:#fff;border-radius:16px;padding:18px 22px;box-shadow:0 20px 44px rgba(11,23,46,.4);display:flex;gap:14px;align-items:center}
.badge-float .n{font-size:26px;font-weight:800;color:var(--sky)}
.badge-float .l{font-size:12.5px;color:#b9c4d6;line-height:1.35;max-width:110px}
.split-txt h2{margin-bottom:16px}
.split-txt .lead{color:var(--muted);margin-bottom:26px;font-size:16.5px}
.checks{display:grid;gap:14px;margin-bottom:30px}
.check{display:flex;gap:14px;align-items:center}
.check .ic{min-width:40px;height:40px;border-radius:12px;background:rgba(201,162,39,.12);color:var(--accent-dark);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:17px}
.check b{font-size:15.5px}
.check p{font-size:13.5px;color:var(--muted)}

/* ---- 服务：图片头卡片 ---- */
.services{padding:90px 0;background:var(--bg-light)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.svc{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--bg-line);transition:.3s}
.svc:hover{transform:translateY(-8px);box-shadow:0 24px 50px rgba(11,23,46,.14)}
.svc .ph{height:170px;overflow:hidden;position:relative}
.svc .ph img{width:100%;height:100%;object-fit:cover;transition:.5s}
.svc:hover .ph img{transform:scale(1.08)}
.svc .ph::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(11,23,46,.55))}
.svc .body{padding:22px 24px 26px}
.svc h3{font-size:17.5px;font-weight:800;margin-bottom:8px}
.svc p{font-size:14px;color:var(--muted)}
.svc a{display:inline-block;margin-top:12px;font-size:14px;font-weight:700;color:var(--accent-dark)}

/* ---- 平台带（老站 service-scope 内容）---- */
.plats{padding:0 0 90px;background:var(--bg-light)}
.plat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.plat{background:#fff;border:1px solid var(--bg-line);border-radius:14px;padding:26px 24px;transition:.3s}
.plat:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(11,23,46,.1)}
.plat h3{font-size:16px;font-weight:800;margin-bottom:8px;color:var(--navy)}
.plat p{font-size:13.5px;color:var(--muted)}

/* ---- 视频带 ---- */
.video-band{background:var(--navy);color:#fff;padding:90px 0;position:relative;overflow:hidden}
.video-band .dots{right:6%;top:50px}
.video-band .sec-head h2{color:#fff}
.video-band .sec-head p{color:#9db0c9}
/* 竖版 9:16 视频：限宽 + 固定比例（防加载后重排），高度不超过视口 72% */
.player{width:min(430px,calc(72vh * 9 / 16));margin:0 auto;aspect-ratio:9/16;border-radius:22px;overflow:hidden;box-shadow:0 34px 80px rgba(0,0,0,.5);border:1px solid rgba(255,255,255,.14);background:#000}
.player video{width:100%;height:100%;object-fit:cover;display:block}
.video-cap{text-align:center;margin-top:20px;font-size:14px;color:#8fa0b8}

/* ---- 案例：整卡即图片 + 渐变压字 ---- */
.cases{padding:90px 0;background:#fff}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
a.case{display:block}
.case{position:relative;border-radius:var(--radius);overflow:hidden;height:340px;transition:.3s}
.case:hover{transform:translateY(-6px);box-shadow:0 26px 54px rgba(11,23,46,.22)}
.case img{width:100%;height:100%;object-fit:cover;transition:.6s}
.case:hover img{transform:scale(1.07)}
.case .ov{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,23,46,0) 32%,rgba(11,23,46,.88) 100%);display:flex;flex-direction:column;justify-content:flex-end;padding:24px;color:#fff}
.case .tag{align-self:flex-start;background:var(--accent);color:#fff;font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;border-radius:999px;padding:5px 14px;margin-bottom:12px}
.case h3{font-size:18.5px;font-weight:800;line-height:1.3}
.cases .more{text-align:center;margin-top:44px}

/* ---- MID CTA ---- */
.midcta{position:relative;color:#fff;text-align:center;padding:130px 0;background:var(--navy)}
.midcta .bg{position:absolute;inset:0;background:url('../images/lujiazui.jpg') center/cover no-repeat}
.midcta .shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,23,46,.93),rgba(201,162,39,.55))}
.midcta .wrap{position:relative;z-index:2}
.midcta h2{font-size:clamp(28px,4.2vw,46px);font-weight:800;max-width:760px;margin:0 auto 14px;line-height:1.18}
.midcta p{color:rgba(255,255,255,.88);margin-bottom:34px;font-size:16.5px}

/* ---- ABOUT：创始人图 + 错位色块 ---- */
.about{padding:110px 0;background:var(--bg-light)}
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
.founder-ph{position:relative}
.founder-ph img{border-radius:22px;box-shadow:0 30px 70px rgba(11,23,46,.28);position:relative;z-index:1}
.founder-ph::before{content:'';position:absolute;right:-24px;top:-24px;width:70%;height:70%;background:var(--navy);border-radius:22px}
.founder-ph .chip{position:absolute;left:-20px;bottom:34px;z-index:2;background:#fff;border-radius:14px;padding:14px 20px;box-shadow:0 18px 40px rgba(11,23,46,.2);font-weight:800;font-size:15px}
.founder-ph .chip small{display:block;font-weight:500;color:var(--muted);font-size:12.5px}
.about h2{margin-bottom:16px}
.about .lead{color:var(--muted);font-size:16.5px;margin-bottom:16px}
.about .lead + .lead{margin-bottom:26px}
.vals{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.val{background:#fff;border:1px solid var(--bg-line);border-radius:14px;padding:20px 18px}
.val h4{font-size:15.5px;font-weight:800;margin-bottom:6px}
.val h4 i{font-style:normal;color:var(--accent);margin-right:6px}
.val p{font-size:13.5px;color:var(--muted)}

/* ---- STEPS ---- */
.steps{background:var(--navy);color:#fff;padding:90px 0;position:relative;overflow:hidden}
.steps .dots{left:4%;bottom:40px}
.steps .sec-head h2{color:#fff}
.steps .sec-head p{color:#9db0c9}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:32px 28px;transition:.3s}
.step:hover{background:rgba(201,162,39,.14);border-color:rgba(201,162,39,.5);transform:translateY(-4px)}
.step .num{font-size:44px;font-weight:800;color:var(--accent);line-height:1}
.step h3{font-size:18.5px;font-weight:800;margin:14px 0 8px}
.step p{font-size:14.5px;color:#9db0c9}

/* ---- FAQ ---- */
.faq{padding:90px 0}
.faq-list{max-width:780px;margin:0 auto}
.qa{border:1px solid var(--bg-line);border-radius:14px;margin-bottom:14px;overflow:hidden;background:#fff}
.qa button{width:100%;text-align:left;background:none;border:0;padding:20px 24px;font-size:16px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:inherit;color:var(--ink)}
.qa .plus{font-size:22px;color:var(--accent);font-weight:800;flex:none}
.qa .ans{max-height:0;overflow:hidden;transition:max-height .35s ease}
.qa .ans p{padding:0 24px 22px;color:var(--muted);font-size:15px}
.qa.open{border-color:rgba(201,162,39,.4)}

/* ---- CONTACT（老站联系板块迁移）---- */
.contact{background:var(--navy);color:#fff;padding:100px 0}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:70px;align-items:start}
.contact h2.big{font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.1;margin-bottom:18px}
.contact .desc{color:#9db0c9;font-size:16.5px;margin-bottom:34px;max-width:460px}
.contact-item{display:flex;gap:16px;align-items:flex-start;margin-bottom:22px}
.contact-item .ic{min-width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;font-size:19px}
.contact-item .k{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:#8fa0b8;font-weight:700}
.contact-item .v{font-size:16px;font-weight:600;margin-top:2px}
.contact-item .v a{color:#fff}
.contact-item .v a:hover{color:var(--sky)}
.contact-item .v a.u{text-decoration:underline;text-underline-offset:3px}
.cform{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:32px}
.cform input,.cform textarea{width:100%;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:13px 16px;color:#fff;font-family:inherit;font-size:14.5px;margin-bottom:12px}
.cform input::placeholder,.cform textarea::placeholder{color:#7688a0}
.cform input:focus,.cform textarea:focus{border-color:var(--accent);outline:none}
.cform textarea{min-height:120px;resize:vertical}
.cform .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cform .row2 input{margin-bottom:12px}
.cform .pill{width:100%;text-align:center}
.cform .note{font-size:12.5px;color:#7688a0;margin-top:12px;text-align:center}

/* ---- footer ---- */
footer{background:var(--navy);color:#c8d2e0;padding:70px 0 34px;border-top:1px solid rgba(255,255,255,.08)}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:50px;margin-bottom:50px}
footer .logo{font-size:22px}
footer .about-t{font-size:14.5px;margin:16px 0 0;max-width:340px;color:#8fa0b8}
.foot-h{color:#fff;font-weight:800;font-size:15px;margin-bottom:16px}
.foot-links{list-style:none}
.foot-links li{margin-bottom:10px}
.foot-links a{font-size:14.5px;color:#8fa0b8}
.foot-links a:hover{color:#fff}
.foot-links .plain{font-size:14.5px;color:#8fa0b8}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:#7688a0}
.foot-bottom a{color:#7688a0}
.foot-bottom a:hover{color:#fff}

/* ============================================================
   子页文档版式（services / case-studies / pricing / blog / 文章）
   ============================================================ */
.doc{max-width:860px;margin:0 auto;padding:64px 24px 90px}
.doc .kicker{color:var(--accent-dark);font-weight:800;font-size:13px;text-transform:uppercase;letter-spacing:.14em;margin-bottom:12px;display:inline-block}
.doc h1{font-size:clamp(30px,4.6vw,44px);line-height:1.18;letter-spacing:-.01em;font-weight:800;color:var(--navy);margin:0 0 18px}
.doc h2{font-size:24px;font-weight:800;color:var(--navy);margin:48px 0 14px;line-height:1.3}
.doc h3{font-size:18px;font-weight:800;color:var(--navy);margin:26px 0 8px}
.doc p{margin:0 0 14px;color:#3d4a58}
.doc ul{margin:0 0 14px;padding-left:22px;color:#3d4a58}
.doc li{margin-bottom:8px}
.doc li::marker{color:var(--accent-dark)}
.doc .lead{font-size:17px;color:var(--muted)}
.doc .card{border:1px solid var(--bg-line);border-radius:14px;padding:24px 28px;margin:16px 0;background:#fff;transition:.3s}
.doc .card:hover{box-shadow:0 14px 34px rgba(11,23,46,.08)}
.doc .card h3{margin-top:0}
.doc .cta{display:inline-block;background:var(--accent);color:var(--navy);padding:14px 32px;border-radius:999px;text-decoration:none;font-weight:700;margin:26px 0 8px;transition:.25s}
.doc .cta:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px)}
.doc .cta-outline{display:inline-block;border:1.5px solid var(--navy);color:var(--navy);padding:13px 31px;border-radius:999px;text-decoration:none;font-weight:700;margin:26px 0 8px 12px;transition:.25s}
.doc .cta-outline:hover{background:var(--navy);color:#fff}
.doc table{width:100%;border-collapse:collapse;margin:20px 0}
.doc th,.doc td{border:1px solid var(--bg-line);padding:12px 16px;text-align:left;font-size:.95rem;vertical-align:top}
.doc th{background:var(--bg-light);font-weight:700;color:var(--navy)}
.doc td:first-child{font-weight:700;color:var(--navy);white-space:nowrap}
.doc .num{color:var(--accent-dark);font-weight:800}
/* 案例块（老站 .case 文本块，避免与首页图片卡冲突） */
.doc .case{background:#fff;border:1px solid var(--bg-line);border-radius:16px;padding:28px 30px;margin:22px 0;height:auto;transition:.3s;scroll-margin-top:90px}
.doc .case:hover{box-shadow:0 16px 40px rgba(11,23,46,.1);transform:none}
.doc .case .cat{font-size:13px;color:var(--accent-dark);font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px}
.doc .case h2{margin:0 0 12px;font-size:22px}
/* 博客列表 */
.doc .post{border:1px solid var(--bg-line);border-radius:16px;padding:26px 30px;margin:18px 0;background:#fff;transition:.3s}
.doc .post:hover{box-shadow:0 16px 40px rgba(11,23,46,.1);transform:translateY(-3px)}
.doc .post .meta{font-size:13px;color:var(--accent-dark);font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px}
.doc .post h2{margin:0 0 8px;font-size:21px}
.doc .post h2 a{color:var(--navy)}
.doc .post h2 a:hover{color:var(--accent-dark)}
.doc .post p{margin:0}
/* 文章页 */
.doc.article h1{margin-bottom:10px}
.doc .a-meta{font-size:14px;color:var(--muted);margin-bottom:28px}
.doc .a-meta .back{color:var(--accent-dark);font-weight:700}
.doc .a-meta .back:hover{text-decoration:underline}
.doc h2{scroll-margin-top:90px}

/* ---- responsive ---- */
@media(max-width:980px){
  .grid-4,.plat-grid{grid-template-columns:repeat(2,1fr)}
  .grid-3,.step-grid{grid-template-columns:repeat(2,1fr)}
  .split-grid,.about-grid,.contact-grid{grid-template-columns:1fr;gap:60px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .vals{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero-in{padding:100px 0 170px}
  .mcard{width:134px;height:74px}
  .mcard img{max-width:96px;max-height:40px}
}
@media(max-width:640px){
  .nav-links{display:none}
  .burger{display:block}
  .nav-links.open{display:flex;position:absolute;top:66px;left:0;right:0;background:var(--navy);flex-direction:column;padding:24px;gap:18px;border-bottom:1px solid rgba(255,255,255,.1)}
  .grid-4,.plat-grid,.grid-3,.step-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr;gap:12px}
  .stat{padding:16px 18px}
  .stat .n{font-size:22px}
  .foot-grid{grid-template-columns:1fr}
  .badge-float{right:8px;top:14px;padding:12px 16px}
  .case{height:280px}
  .mcard{width:118px;height:66px;margin-right:14px}
  .mcard img{max-width:84px;max-height:34px}
  .mrow + .mrow{margin-top:14px}
  .cform{padding:24px 20px}
  .cform .row2{grid-template-columns:1fr}
  .doc .cta-outline{margin-left:0}
}