/* ============================================================
   宗先信 · 个人网站 共享样式
   格调：政务 / 企业 —— 深藏青、庄重蓝、金色点缀、衬线大标题
   零外部依赖，file:// 双击即用
   ============================================================ */
:root{
  --navy:#0C2352;          /* 深藏青：页头页脚、hero */
  --navy-2:#123373;        /* 藏青渐变第二色 */
  --blue:#2B5FD9;          /* 主行动色 */
  --blue-dark:#1E46A8;
  --blue-bg:#EEF3FD;       /* 浅蓝底 */
  --gold:#C9A253;          /* 金色点缀 */
  --ink:#1F2329;           /* 正文 */
  --muted:#5C6470;         /* 次级文字 */
  --line:#E3E7EF;          /* 分隔线 */
  --bg:#F6F8FC;            /* 页面浅底 */
  --card:#FFFFFF;
  --serif:"Songti SC","STSong","Noto Serif SC","SimSun",serif;
  --sans:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --shadow:0 2px 10px rgba(12,35,82,.06);
  --shadow-lg:0 10px 30px rgba(12,35,82,.12);
  --radius:10px;
  --maxw:1160px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--sans);color:var(--ink);background:#fff;font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;}
a:hover{color:var(--blue-dark);}
ul{list-style:none;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.topbar{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 6px rgba(12,35,82,.05);}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{display:flex;align-items:center;gap:10px;color:var(--navy);}
.logo .mark{width:36px;height:36px;border-radius:8px;background:linear-gradient(135deg,var(--navy),var(--blue));color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:19px;font-weight:700;}
.logo .name{font-family:var(--serif);font-size:19px;font-weight:700;letter-spacing:1px;line-height:1.2;}
.logo .sub{font-size:11px;color:var(--muted);letter-spacing:2px;}
.nav{display:flex;align-items:center;gap:4px;}
.nav a{padding:8px 18px;border-radius:6px;color:var(--ink);font-size:15px;font-weight:500;}
.nav a:hover{background:var(--blue-bg);color:var(--blue-dark);}
.nav a.on{color:var(--blue);font-weight:600;position:relative;}
.nav a.on::after{content:"";position:absolute;left:18px;right:18px;bottom:2px;height:2px;background:var(--gold);border-radius:1px;}
.nav .cta{margin-left:12px;background:var(--blue);color:#fff;padding:8px 20px;border-radius:6px;font-weight:500;}
.nav .cta:hover{background:var(--blue-dark);color:#fff;}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 55%,#1A4494 100%);color:#fff;position:relative;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;pointer-events:none;}
.hero::after{content:"";position:absolute;right:-160px;top:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,162,83,.16),transparent 65%);pointer-events:none;}
.hero .wrap{position:relative;padding:88px 24px 76px;}
.hero .kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:3px;color:var(--gold);border:1px solid rgba(201,162,83,.5);padding:5px 16px;border-radius:999px;margin-bottom:26px;}
.hero h1{font-family:var(--serif);font-size:44px;line-height:1.35;font-weight:700;letter-spacing:2px;max-width:820px;}
.hero h1 em{font-style:normal;color:#F2D9A0;}
.hero p.lead{margin-top:20px;font-size:17px;color:rgba(255,255,255,.82);max-width:720px;line-height:1.9;}
.hero .actions{margin-top:36px;display:flex;gap:16px;flex-wrap:wrap;}
.btn{display:inline-block;padding:13px 34px;border-radius:8px;font-size:15px;font-weight:600;letter-spacing:1px;transition:.2s;}
.btn-gold{background:linear-gradient(135deg,#D8B36A,var(--gold));color:var(--navy);}
.btn-gold:hover{filter:brightness(1.08);color:var(--navy);transform:translateY(-1px);}
.btn-ghost{border:1px solid rgba(255,255,255,.45);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;}
.btn-blue{background:var(--blue);color:#fff;}
.btn-blue:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);}

.hero-stats{display:flex;gap:0;margin-top:64px;border-top:1px solid rgba(255,255,255,.16);padding-top:30px;flex-wrap:wrap;}
.hero-stats .st{flex:1;min-width:150px;padding:0 20px;border-left:1px solid rgba(255,255,255,.16);}
.hero-stats .st:first-child{border-left:none;padding-left:0;}
.hero-stats b{display:block;font-family:var(--serif);font-size:30px;color:#F2D9A0;letter-spacing:1px;}
.hero-stats span{font-size:13px;color:rgba(255,255,255,.7);letter-spacing:1px;}

/* 内页小 hero */
.pagehero{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;padding:56px 0 48px;position:relative;overflow:hidden;}
.pagehero::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:56px 56px;}
.pagehero .wrap{position:relative;}
.pagehero h1{font-family:var(--serif);font-size:34px;letter-spacing:3px;font-weight:700;}
.pagehero h1::after{content:"";display:block;width:52px;height:3px;background:var(--gold);margin-top:14px;border-radius:2px;}
.pagehero p{margin-top:14px;color:rgba(255,255,255,.78);font-size:15px;max-width:760px;}

/* ---------- 通用 section ---------- */
.section{padding:72px 0;}
.section.alt{background:var(--bg);}
.sec-head{margin-bottom:44px;}
.sec-head .en{font-size:12px;letter-spacing:4px;color:var(--gold);font-weight:600;text-transform:uppercase;}
.sec-head h2{font-family:var(--serif);font-size:30px;color:var(--navy);letter-spacing:2px;margin-top:6px;font-weight:700;}
.sec-head h2::after{content:"";display:block;width:44px;height:3px;background:linear-gradient(90deg,var(--gold),transparent);margin-top:12px;border-radius:2px;}
.sec-head p{margin-top:12px;color:var(--muted);max-width:720px;}
.sec-head.center{text-align:center;}
.sec-head.center h2::after{margin-left:auto;margin-right:auto;background:linear-gradient(90deg,transparent,var(--gold),transparent);}
.sec-head.center p{margin-left:auto;margin-right:auto;}

/* ---------- 服务卡片 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.svc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);transition:.25s;position:relative;overflow:hidden;}
.svc::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--gold);opacity:0;transition:.25s;}
.svc:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#D5DEEF;}
.svc:hover::before{opacity:1;}
.svc .icon{width:46px;height:46px;border-radius:10px;background:var(--blue-bg);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.svc .icon svg{width:24px;height:24px;stroke:var(--blue);fill:none;stroke-width:1.8;}
.svc h3{font-size:17px;color:var(--navy);margin-bottom:8px;letter-spacing:.5px;}
.svc p{font-size:13.5px;color:var(--muted);line-height:1.8;}
.svc .price{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);font-size:14px;color:var(--blue);font-weight:700;}

/* ---------- 案例卡片（首页） ---------- */
.case-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s;display:flex;flex-direction:column;}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
.case-card .shot{position:relative;background:#0E1B33;aspect-ratio:16/9.5;overflow:hidden;}
.case-card .shot img{width:100%;height:100%;object-fit:cover;object-position:top center;transition:.4s;}
.case-card:hover .shot img{transform:scale(1.04);}
.case-card .badge{position:absolute;left:14px;top:14px;background:rgba(12,35,82,.88);color:#F2D9A0;font-size:12px;letter-spacing:2px;padding:4px 12px;border-radius:999px;border:1px solid rgba(201,162,83,.45);}
.case-card .body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column;}
.case-card h3{font-size:17px;color:var(--navy);letter-spacing:.5px;}
.case-card .tags{margin:10px 0 12px;display:flex;gap:8px;flex-wrap:wrap;}
.tag{font-size:12px;color:var(--blue-dark);background:var(--blue-bg);border-radius:4px;padding:2px 10px;letter-spacing:.5px;}
.case-card p{font-size:13.5px;color:var(--muted);line-height:1.8;flex:1;}
.case-card .metrics{display:flex;gap:10px;margin-top:14px;}
.case-card .metric{flex:1;background:#FAFBFE;border:1px solid var(--line);border-radius:6px;padding:8px 6px;text-align:center;}
.case-card .metric b{display:block;font-size:16px;color:var(--blue);font-family:var(--serif);}
.case-card .metric span{font-size:11px;color:var(--muted);}
.case-card .links{margin-top:16px;display:flex;gap:12px;}
.case-card .links a{font-size:13.5px;font-weight:600;}
.link-arrow::after{content:" →";}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow);}
.step .n{font-family:var(--serif);font-size:34px;font-weight:700;color:transparent;-webkit-text-stroke:1px var(--gold);opacity:.85;line-height:1;}
.step h3{font-size:16px;color:var(--navy);margin:10px 0 6px;}
.step p{font-size:13px;color:var(--muted);line-height:1.8;}

/* ---------- CTA 横幅 ---------- */
.cta-band{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;padding:56px 0;position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;left:-120px;bottom:-180px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(201,162,83,.18),transparent 65%);}
.cta-band .wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-band h2{font-family:var(--serif);font-size:26px;letter-spacing:2px;}
.cta-band p{color:rgba(255,255,255,.75);margin-top:8px;font-size:14px;}

/* ---------- 案例页：案例区块 ---------- */
.case-block{padding:64px 0;border-bottom:1px solid var(--line);}
.case-block:nth-child(even){background:var(--bg);}
.case-head{display:flex;align-items:flex-start;gap:20px;margin-bottom:8px;flex-wrap:wrap;}
.case-no{font-family:var(--serif);font-size:15px;font-weight:700;color:var(--gold);border:1px solid rgba(201,162,83,.5);border-radius:6px;padding:4px 12px;letter-spacing:2px;white-space:nowrap;margin-top:4px;}
.case-head h2{font-family:var(--serif);font-size:26px;color:var(--navy);letter-spacing:1px;}
.case-head .tags{margin-top:8px;display:flex;gap:8px;flex-wrap:wrap;}
.case-intro{color:var(--muted);font-size:14.5px;max-width:860px;margin-bottom:28px;}
.bpr{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:28px;}
.bpr .cell{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);}
.bpr h4{font-size:14px;color:var(--navy);display:flex;align-items:center;gap:8px;margin-bottom:10px;letter-spacing:1px;}
.bpr h4::before{content:"";width:4px;height:14px;background:var(--gold);border-radius:2px;}
.bpr li{font-size:13px;color:var(--muted);line-height:1.85;padding-left:14px;position:relative;margin-bottom:4px;}
.bpr li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:#C4CDDE;}
.bpr li b{color:var(--ink);}
.result-line{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px;}
.result-line .r{background:#F3F7EE;border:1px solid #DDE8D0;border-radius:8px;padding:10px 18px;font-size:13.5px;color:#3D6B1E;}
.result-line .r b{color:#2F5516;}
.shots{display:grid;gap:18px;}
.shots.g2{grid-template-columns:repeat(2,1fr);}
.shots.g3{grid-template-columns:repeat(3,1fr);}
.shot-fig{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s;}
.shot-fig:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);}
.shot-fig .imgbox{background:#E8ECF3;overflow:hidden;aspect-ratio:16/10;display:flex;align-items:center;justify-content:center;}
.shot-fig img{width:100%;height:100%;object-fit:contain;display:block;cursor:zoom-in;}
.shot-fig figcaption{padding:10px 14px;font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);background:#FAFBFE;}
.demo-links{margin-top:24px;display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
.demo-note{font-size:12.5px;color:var(--muted);}

/* ---------- 关于我 ---------- */
.about-grid{display:grid;grid-template-columns:340px 1fr;gap:36px;align-items:start;}
.id-card{background:linear-gradient(160deg,var(--navy),var(--navy-2));border-radius:14px;color:#fff;padding:36px 30px;position:relative;overflow:hidden;box-shadow:var(--shadow-lg);}
.id-card::after{content:"";position:absolute;right:-70px;top:-70px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(201,162,83,.25),transparent 65%);}
.id-card .avatar{width:84px;height:84px;border-radius:50%;background:rgba(255,255,255,.12);border:2px solid rgba(201,162,83,.6);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:34px;font-weight:700;color:#F2D9A0;margin-bottom:18px;position:relative;}
.id-card h2{font-family:var(--serif);font-size:24px;letter-spacing:2px;position:relative;}
.id-card .pos{font-size:13px;color:rgba(255,255,255,.8);margin-top:6px;letter-spacing:1px;position:relative;}
.id-card hr{border:none;border-top:1px solid rgba(255,255,255,.18);margin:20px 0;}
.id-card .kv{font-size:13px;color:rgba(255,255,255,.85);display:flex;justify-content:space-between;margin-bottom:10px;position:relative;}
.id-card .kv b{color:#F2D9A0;font-weight:600;}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px 28px;box-shadow:var(--shadow);margin-top:20px;}
.contact-card h3{font-size:16px;color:var(--navy);margin-bottom:14px;letter-spacing:1px;}
.contact-card .row{display:flex;justify-content:space-between;font-size:14px;padding:9px 0;border-bottom:1px dashed var(--line);}
.contact-card .row:last-child{border-bottom:none;}
.contact-card .row span{color:var(--muted);}
.ph{background:#FFF7E6;color:#B45309;padding:1px 8px;border-radius:4px;font-size:13px;}
.about-txt p{margin-bottom:16px;color:#3A414D;font-size:15px;line-height:2;}
.about-txt p b{color:var(--navy);}
.point-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:8px;}
.point{display:flex;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 18px;box-shadow:var(--shadow);}
.point .dot{width:34px;height:34px;border-radius:8px;background:var(--blue-bg);color:var(--blue);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;font-size:15px;}
.point b{display:block;font-size:14.5px;color:var(--navy);margin-bottom:2px;}
.point p{font-size:12.5px;color:var(--muted);line-height:1.7;}

/* 价目表 */
table.pricelist{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);font-size:14px;}
table.pricelist th,table.pricelist td{border:1px solid var(--line);padding:13px 18px;text-align:left;}
table.pricelist th{background:var(--navy);color:#fff;font-weight:600;letter-spacing:1px;font-size:13.5px;}
table.pricelist td:first-child{font-weight:600;color:var(--navy);width:24%;}
table.pricelist td.price{color:var(--blue);font-weight:700;width:22%;white-space:nowrap;}
table.pricelist tr:nth-child(even) td{background:#FAFBFE;}
table.pricelist td small{display:block;color:var(--muted);font-weight:400;font-size:12.5px;margin-top:2px;}

/* ---------- 灯箱 ---------- */
.lightbox{position:fixed;inset:0;background:rgba(8,16,36,.9);z-index:999;display:none;align-items:center;justify-content:center;padding:40px;cursor:zoom-out;}
.lightbox.open{display:flex;}
.lightbox img{max-width:100%;max-height:100%;border-radius:8px;box-shadow:0 20px 80px rgba(0,0,0,.5);}

/* ---------- 页脚 ---------- */
.footer{background:#0A1C42;color:rgba(255,255,255,.72);padding:48px 0 0;font-size:13.5px;}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:36px;}
.footer h4{color:#fff;font-size:15px;letter-spacing:1px;margin-bottom:14px;font-family:var(--serif);}
.footer h4::after{content:"";display:block;width:28px;height:2px;background:var(--gold);margin-top:8px;}
.footer p{line-height:1.9;}
.footer a{color:rgba(255,255,255,.72);}
.footer a:hover{color:#F2D9A0;}
.footer li{margin-bottom:8px;}
.footer .bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.5);}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .grid-4,.flow{grid-template-columns:repeat(2,1fr);}
  .bpr,.grid-3{grid-template-columns:1fr;}
  .about-grid{grid-template-columns:1fr;}
  .hero h1{font-size:32px;}
  .footer .cols{grid-template-columns:1fr;gap:24px;}
}
@media (max-width:640px){
  .grid-4,.grid-3,.grid-2,.flow,.point-list,.shots.g2,.shots.g3{grid-template-columns:1fr;}
  .hero .wrap{padding:56px 24px 48px;}
  .hero-stats .st{min-width:50%;padding:0 12px;margin-bottom:14px;}
  .nav a{padding:6px 10px;font-size:14px;}
  .nav .cta{display:none;}
}