/* 配色取自 Fine Code Logo：浅青绿 #7ACEC4 / 青蓝 #339EA8 / 灰青文字 #6A8E8B —— 全站浅色清爽风格 */
:root{
  --mint:#7acec4; --mint-l:#e6f6f4; --mint-xl:#f3fbfa;
  --teal:#339ea8; --teal-d:#278791; --teal-l:#d5eef0;
  --ink:#2c4648; --muted:#6a8e8b; --line:#dcecea; --bg:#f4fbfa; --white:#fff;
  --radius:14px; --shadow:0 8px 28px rgba(51,158,168,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--ink);line-height:1.7;background:#fff;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
.container{width:min(1160px,92%);margin:0 auto}
main{min-height:60vh;outline:none}
.loading,.empty{padding:120px 0;text-align:center;color:var(--muted)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px}
.brand-logo{height:52px;width:auto;object-fit:contain;mix-blend-mode:multiply}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:18px;letter-spacing:1px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:10px;letter-spacing:3px;color:var(--muted)}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{padding:8px 16px;border-radius:8px;font-size:15px;color:var(--ink);transition:.2s}
.main-nav a:hover,.main-nav a.active{color:var(--teal-d);background:var(--mint-l)}
.main-nav a.btn{color:#fff;margin-left:8px}
.main-nav a.btn:hover{background:var(--teal-d);color:#fff}
.nav-toggle{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--teal);transition:.2s}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 26px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:.2s;font-family:inherit}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-d);transform:translateY(-1px)}
.btn-ghost{border-color:var(--teal);color:var(--teal-d);background:#fff}
.btn-ghost:hover{background:var(--mint-l)}
.btn-outline{border-color:var(--line);background:#fff;color:var(--ink)}
.btn-outline:hover{border-color:var(--teal);color:var(--teal-d)}

/* hero */
.hero{position:relative;color:var(--ink);background:radial-gradient(700px 360px at 88% 15%,rgba(122,206,196,.55),transparent 62%),radial-gradient(600px 300px at 5% 100%,rgba(51,158,168,.15),transparent 60%),linear-gradient(135deg,#eaf8f6 0%,#f7fcfc 100%);overflow:hidden}
.hero::before{content:"";position:absolute;right:-60px;top:30px;width:420px;height:420px;background:linear-gradient(135deg,rgba(122,206,196,.45),rgba(122,206,196,.12));border-radius:100% 0 0 100%/100% 0 0 100%;transform:rotate(-8deg)}
.hero::after{content:"";position:absolute;right:130px;bottom:-10px;width:0;height:0;border-left:90px solid transparent;border-right:90px solid transparent;border-bottom:190px solid rgba(51,158,168,.22);transform:rotate(4deg)}
.hero-inner{position:relative;z-index:1;padding:100px 0 120px;max-width:820px}
.eyebrow{display:inline-block;padding:4px 14px;border:1px solid var(--mint);border-radius:999px;font-size:13px;letter-spacing:2px;color:var(--teal-d);background:rgba(255,255,255,.7);margin-bottom:22px}
.hero h1{font-size:clamp(32px,5vw,52px);line-height:1.2;font-weight:800;letter-spacing:1px;margin-bottom:20px;color:#25666d}
.hero p{font-size:18px;color:#4f6d6b;max-width:640px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:44px}
.hero-tags a{font-size:13px;padding:6px 14px;border-radius:8px;background:#fff;border:1px solid var(--line);color:var(--teal-d);transition:.2s}
.hero-tags a:hover{background:var(--mint-l);border-color:var(--mint)}

/* sections */
.section{padding:84px 0}
.section.alt{background:var(--bg)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:32px;line-height:1.3;position:relative;padding-bottom:12px}
.section-head h2::after{content:"";position:absolute;left:0;bottom:0;width:48px;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--mint),var(--teal))}
.section-head p{color:var(--muted);margin-top:6px;max-width:560px}
.link-more{color:var(--teal-d);font-weight:600;font-size:15px}
.link-more:hover{text-decoration:underline}

.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.25s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--mint)}
.card .num{font-size:13px;font-weight:700;color:var(--teal);letter-spacing:2px;margin-bottom:12px}
.card h3{font-size:20px;margin-bottom:6px;line-height:1.4}
.card .tagline{color:var(--teal-d);font-size:14px;font-weight:600;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px;flex:1}
.card .more{margin-top:18px;color:var(--teal-d);font-weight:600;font-size:14px}
.card::after{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:linear-gradient(90deg,var(--mint),var(--teal));transform:scaleX(0);transform-origin:left;transition:.3s}
.card:hover::after{transform:scaleX(1)}

.cover{height:170px;margin:-30px -30px 20px;background:linear-gradient(135deg,var(--mint),var(--teal));background-size:cover;background-position:center 10%;display:flex;align-items:flex-end;padding:14px 20px;color:#fff;font-size:13px}
.cover span{background:rgba(255,255,255,.88);color:var(--teal-d);padding:3px 10px;border-radius:6px;font-weight:600}

.tag{display:inline-block;font-size:12px;padding:2px 10px;border-radius:6px;background:var(--mint-l);color:var(--teal-d);font-weight:600;margin-right:6px}
.meta{font-size:13px;color:var(--muted);margin-bottom:10px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}

.kpis{display:flex;gap:18px;flex-wrap:wrap;margin-top:16px}
.kpi strong{display:block;font-size:24px;color:var(--teal);line-height:1.2}
.kpi span{font-size:12px;color:var(--muted)}

/* entry tiles (home) */
.entries{margin-top:-56px;position:relative;z-index:2}
.entries .grid{grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line);overflow:hidden}
.entry{padding:28px 26px;border-right:1px solid var(--line);transition:.2s}
.entry:last-child{border-right:0}
.entry:hover{background:var(--mint-xl)}
.entry b{display:block;font-size:17px;margin-bottom:4px;color:var(--teal-d)}
.entry span{font-size:13px;color:var(--muted)}

/* chips */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.chip{padding:7px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;cursor:pointer;font-family:inherit;color:var(--ink);transition:.2s}
.chip:hover{border-color:var(--teal);color:var(--teal-d)}
.chip.on{background:var(--teal);color:#fff;border-color:var(--teal)}

/* page hero */
.page-hero{background:linear-gradient(135deg,#e3f5f3 0%,#f6fcfb 100%);color:var(--ink);padding:60px 0 52px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-40px;top:-60px;width:260px;height:260px;border-radius:50%;background:rgba(122,206,196,.3)}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{font-size:36px;margin-bottom:8px;color:#25666d}
.page-hero p{color:#547270;max-width:680px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.crumb a:hover{color:var(--teal-d)}

/* detail */
.detail{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-box{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:#fff}
.side-box h4{margin-bottom:12px;font-size:16px}
.side-box li a{display:block;padding:8px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--ink)}
.side-box li:last-child a{border:0}
.side-box li a:hover{color:var(--teal-d)}
.side-cta{background:linear-gradient(135deg,var(--mint-l),var(--teal-l));border-color:var(--mint)}
.side-cta p{font-size:14px;color:#4f6d6b;margin-bottom:14px}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:34px}
.feature-list li{position:relative;padding:14px 16px 14px 42px;background:var(--bg);border:1px solid var(--line);border-radius:10px;font-size:15px}
.feature-list li::before{content:"";position:absolute;left:16px;top:50%;width:14px;height:8px;border-left:2px solid var(--teal);border-bottom:2px solid var(--teal);transform:translateY(-70%) rotate(-45deg)}
.case-cover{width:100%;height:auto;max-height:320px;object-fit:cover;object-position:center top;border-radius:12px;margin-bottom:24px;border:1px solid var(--line)}
.kpi-band{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-bottom:34px}
.kpi-band div{background:var(--mint-l);border-radius:12px;padding:18px}
.kpi-band strong{font-size:28px;color:var(--teal-d);display:block}
.kpi-band span{font-size:14px;color:var(--muted)}

.prose{font-size:16.5px;color:#31494b}
.prose h2{font-size:24px;margin:34px 0 12px;padding-left:12px;border-left:4px solid var(--teal);line-height:1.4}
.prose h3{font-size:19px;margin:26px 0 10px;color:var(--teal-d)}
.prose p{margin-bottom:14px}
.prose ul,.prose ol{margin:0 0 16px 1.4em}
.prose ul{list-style:disc}
.prose li{margin-bottom:6px}
.prose img{border-radius:10px;margin:18px 0}
.prose a{color:var(--teal-d);text-decoration:underline}
.prose blockquote{border-left:4px solid var(--mint);background:var(--bg);padding:12px 18px;margin:16px 0;color:var(--muted);border-radius:0 8px 8px 0}
.prose table{border-collapse:collapse;width:100%;margin:16px 0}
.prose th,.prose td{border:1px solid var(--line);padding:8px 12px;text-align:left}

/* article list */
.article-row{display:flex;gap:24px;padding:26px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.article-row:first-child{padding-top:0}
.article-row .date{flex:0 0 74px;text-align:center;background:var(--mint-l);border-radius:10px;padding:10px 0;color:var(--teal-d)}
.article-row .date b{display:block;font-size:26px;line-height:1.1}
.article-row .date span{font-size:12px}
.article-row h3{font-size:20px;margin-bottom:6px;line-height:1.4}
.article-row:hover h3{color:var(--teal-d)}
.article-row p{color:var(--muted);font-size:15px}

/* about */
.about-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:56px;align-items:start}
.contact-card{background:linear-gradient(160deg,var(--mint-l),var(--teal-l));border:1px solid var(--mint);color:var(--ink);border-radius:var(--radius);padding:34px}
.contact-card h3{margin-bottom:18px;font-size:20px;color:var(--teal-d)}
.contact-card li{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid rgba(51,158,168,.18);font-size:15px}
.contact-card li:last-child{border:0}
.contact-card a{color:var(--teal-d);font-weight:600}
.contact-card a:hover{text-decoration:underline}
.contact-card li span{word-break:break-all}
.contact-card li b{flex:0 0 64px;color:var(--teal-d);font-weight:600}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:10px}
.value{padding:24px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);border-top:3px solid var(--mint)}
.value b{display:block;font-size:17px;margin-bottom:6px;color:var(--teal-d)}
.value p{color:var(--muted);font-size:14px}

/* form */
.form{display:grid;gap:16px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.field label i{color:#e5484d;font-style:normal}
.field input,.field select,.field textarea{width:100%;padding:11px 14px;border:1px solid #cfe3e1;border-radius:10px;font-size:15px;font-family:inherit;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid rgba(51,158,168,.25);border-color:var(--teal)}
.form-msg{font-size:14px;padding:10px 14px;border-radius:8px;display:none}
.form-msg.ok{display:block;background:#e8f8ee;color:#17803d}
.form-msg.err{display:block;background:#fdecec;color:#b42318}

/* CTA band */
.cta-band{background:linear-gradient(135deg,var(--mint) 0%,#5bb9b8 55%,var(--teal) 100%);color:#fff;padding:64px 0;text-align:center}
.cta-band h2{font-size:30px;margin-bottom:10px}
.cta-band p{opacity:.95;margin-bottom:24px}
.cta-band .btn{background:#fff;color:var(--teal-d)}
.cta-band .btn:hover{background:var(--mint-xl)}

/* footer */
.site-footer{background:var(--mint-xl);color:var(--muted);padding-top:56px;font-size:14px;border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:40px}
.site-footer h4{color:var(--teal-d);margin-bottom:14px;font-size:15px}
.site-footer li{margin-bottom:8px}
.site-footer a:hover{color:var(--teal-d)}
.brand-light .brand-text strong{color:var(--ink);font-size:16px}
.brand-light .brand-text em{color:var(--muted);letter-spacing:1px;font-size:11px}
.footer-desc{margin-top:14px;max-width:300px}
.footer-bottom{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:20px 0;border-top:1px solid var(--line);font-size:13px}

@media (max-width:900px){
  .grid-3,.grid-2,.values,.feature-list{grid-template-columns:1fr}
  .entries .grid{grid-template-columns:repeat(2,1fr)}
  .entry:nth-child(2){border-right:0}
  .entry:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .detail,.about-grid{grid-template-columns:1fr;gap:32px}
  .side{position:static}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-inner{padding:64px 0 90px}
  .hero::before{width:260px;height:260px;right:-80px}
  .hero::after{display:none}
  .section{padding:60px 0}
  .nav-toggle{display:flex}
  .main-nav{position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 4%;border-bottom:1px solid var(--line);display:none;box-shadow:0 12px 20px rgba(51,158,168,.1)}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 10px}
  .main-nav a.btn{margin:8px 0 0}
  .form .row{grid-template-columns:1fr}
}
@media (min-width:901px) and (max-width:1100px){.grid-3{grid-template-columns:repeat(2,1fr)}}