/* Sailer Partners — consulting-firm style (monochrome) */
:root{
  --ink:#14181c;        /* near-black text */
  --ink-2:#2b3138;
  --muted:#6c7682;      /* gray body */
  --faint:#9aa3ad;
  --line:#e7eaee;
  --bg:#ffffff;
  --soft:#f6f7f9;       /* light section band */
  --dark:#0c1116;       /* dark band / footer */
  --dark-2:#141b22;
  --accent:#8a1fd6;     /* Sailer brand purple — eyebrows, link hover, accents */
  --accent-2:#b23fc7;   /* gradient end (magenta-violet) */
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;
  font-size:16px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
.section{padding:96px 0}
.section.soft{background:var(--soft)}
.eyebrow{font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:18px}
h2.title{font-size:clamp(28px,3.6vw,44px);line-height:1.14;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.lead{color:var(--muted);font-size:18px;max-width:640px;margin-top:18px}
.head-row{margin-bottom:56px;max-width:760px}

/* ---------- Header ---------- */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:800;letter-spacing:-.01em;font-size:19px}
.brand img.logo{height:30px;width:auto;display:block}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{color:var(--ink-2);font-size:15px;font-weight:500}
.nav-links a:hover{color:var(--accent)}
.lang{display:flex;gap:2px;border:1px solid var(--line);border-radius:999px;padding:3px;margin-left:4px}
.lang a{font-size:12.5px;font-weight:700;color:var(--faint);padding:4px 12px;border-radius:999px}
.lang a.active{background:var(--ink);color:#fff}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:600;padding:12px 24px;border-radius:8px;font-size:15px;transition:background .15s ease,transform .15s ease,box-shadow .15s ease}
.btn:hover{background:#7418bd;transform:translateY(-1px);box-shadow:0 8px 22px rgba(138,31,214,.28)}
.nav-inner .btn{padding:10px 22px}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--ink);box-shadow:none}
.btn.ghost:hover{background:var(--ink);color:#fff}
.btn.light{background:#fff;color:var(--ink)}
.btn.outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn.outline-light:hover{background:#fff;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{padding:96px 0 88px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.hero h1{font-size:clamp(34px,5vw,58px);line-height:1.06;font-weight:800;letter-spacing:-.03em;color:var(--ink)}
.hero p{color:var(--muted);font-size:clamp(17px,2vw,21px);margin-top:24px;max-width:54ch}
.hero .cta{margin-top:38px;display:flex;gap:14px;flex-wrap:wrap}
.hero-media{position:relative}
.hero-media img{width:100%;height:480px;object-fit:cover;border-radius:16px;display:block}
.hero-media::after{content:"";position:absolute;inset:0;border-radius:16px;box-shadow:inset 0 0 0 1px rgba(12,17,22,.06)}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:72px;border-top:1px solid var(--line)}
.metrics .m{padding:26px 0 0;border-right:1px solid var(--line);padding-right:24px}
.metrics .m:last-child{border-right:none}
.metrics .n{font-size:34px;font-weight:800;letter-spacing:-.02em}
.metrics .l{font-size:14px;color:var(--muted);margin-top:4px}

/* ---------- Services ---------- */
.grid{display:grid;gap:0}
.svc{display:grid;grid-template-columns:repeat(2,1fr);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.svc .card{padding:40px 38px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg);transition:background .18s ease}
.svc .card:nth-child(2n){border-right:none}
.svc .card:nth-last-child(-n+2){border-bottom:none}
.svc .card:hover{background:var(--soft)}
.svc .num{font-size:13px;font-weight:700;color:var(--faint);letter-spacing:.08em}
.svc .tag{font-size:12.5px;color:var(--accent);font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin:14px 0 6px}
.svc h3{font-size:23px;font-weight:700;letter-spacing:-.01em;margin-bottom:10px}
.svc p{color:var(--muted);font-size:15.5px}
.svc ul{list-style:none;margin-top:18px;border-top:1px solid var(--line);padding-top:18px}
.svc li{color:var(--ink-2);font-size:14.5px;padding-left:20px;position:relative;margin:8px 0}
.svc li::before{content:"—";position:absolute;left:0;color:var(--faint)}
a.card{display:block;color:inherit}
.svc .more{display:inline-block;margin-top:18px;font-size:14px;font-weight:700;color:var(--accent)}
a.card:hover .more{text-decoration:underline}

/* ---------- Approach (numbered) ---------- */
.approach{display:grid;grid-template-columns:repeat(2,1fr);gap:48px 64px}
.step{display:flex;gap:20px;align-items:flex-start}
.step .idx{font-size:15px;font-weight:800;color:var(--accent);border:1px solid var(--line);border-radius:50%;width:42px;height:42px;display:grid;place-items:center;flex:0 0 42px}
.step h3{font-size:19px;font-weight:700;margin-bottom:6px}
.step p{color:var(--muted);font-size:15px}

/* ---------- Offices ---------- */
.offices{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px}
.chip{border:1px solid var(--line);background:var(--bg);border-radius:8px;padding:10px 18px;font-size:14.5px;font-weight:600;color:var(--ink)}
.chip.soon{color:var(--faint);border-style:dashed}
.chip .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:9px;vertical-align:middle}

/* ---------- World map ---------- */
.map-wrap{position:relative;margin-top:44px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,#fbfcfd,#f4f6f9);padding:18px 18px 8px;overflow:hidden}
.map-wrap .worldmap{width:100%;display:block;opacity:.95}
.pin{position:absolute;transform:translate(-50%,-50%);z-index:2}
.pin .dot{position:relative;width:11px;height:11px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(138,31,214,.16)}
.pin .dot::after{content:"";position:absolute;inset:0;border-radius:50%;background:var(--accent);animation:ping 2.6s ease-out infinite}
.pin.soon .dot{background:#fff;border:2px solid var(--accent);box-shadow:0 0 0 4px rgba(138,31,214,.10)}
.pin.soon .dot::after{display:none}
@keyframes ping{0%{transform:scale(1);opacity:.45}80%,100%{transform:scale(2.8);opacity:0}}
.pin .lbl{position:absolute;left:50%;top:-30px;transform:translateX(-50%);white-space:nowrap;background:var(--ink);color:#fff;font-size:11.5px;font-weight:600;padding:4px 9px;border-radius:6px;opacity:0;transition:opacity .15s ease;pointer-events:none}
.pin .lbl::after{content:"";position:absolute;left:50%;top:100%;transform:translateX(-50%);border:5px solid transparent;border-top-color:var(--ink)}
.pin:hover .lbl{opacity:1}

/* ---------- 公众号 follow ---------- */
.follow{display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:center;border:1px solid var(--line);border-radius:16px;padding:28px 32px;background:var(--bg);margin-top:8px}
.follow .qr{width:124px;height:124px;border-radius:12px;border:1px solid var(--line);background:var(--soft);display:grid;place-items:center;text-align:center;font-size:12px;color:var(--faint);overflow:hidden}
.follow .qr img{width:100%;height:100%;object-fit:contain}
.follow h3{font-size:20px;font-weight:700;margin-bottom:6px}
.follow p{color:var(--muted);font-size:15px}
.follow .wx{display:inline-block;margin-top:10px;font-size:13.5px;font-weight:700;color:var(--accent)}

/* ---------- Quote ---------- */
.quote{max-width:880px;margin:0 auto;text-align:center}
.quote blockquote{font-size:clamp(22px,3vw,32px);line-height:1.4;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.quote .by{margin-top:26px;color:var(--muted);font-size:15px;font-weight:600}

/* ---------- About split ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.about-list{display:grid;gap:0;border-top:1px solid var(--line)}
.about-list .row{display:flex;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}
.about-list .k{font-weight:700;font-size:14px;letter-spacing:.04em;text-transform:uppercase;color:var(--ink);min-width:96px}
.about-list .v{color:var(--muted);font-size:15.5px}

/* ---------- Insights ---------- */
.insights{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.post{border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.post:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(12,17,22,.08)}
.post .thumb{height:160px;background:#eef1f5;overflow:hidden}
.post .thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease}
.post:hover .thumb img{transform:scale(1.05)}
.post .body{padding:24px}
.post .cat{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.post h3{font-size:18px;font-weight:700;margin:10px 0 8px;line-height:1.35}
.post p{color:var(--muted);font-size:14.5px}

/* ---------- Dark CTA band ---------- */
.band{background:var(--dark);color:#fff;border-radius:18px;padding:64px 56px;display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.band h2{font-size:clamp(26px,3.2vw,38px);font-weight:800;letter-spacing:-.02em;max-width:18ch}
.band p{color:#aeb8c4;margin-top:12px;font-size:17px;max-width:46ch}
.band .cta{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Footer ---------- */
footer{background:var(--dark);color:#9aa6b3;padding:72px 0 40px}
footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
footer .brand{color:#fff;margin-bottom:16px}
footer .brand img.logo{height:32px}
footer p,footer a{color:#9aa6b3;font-size:14.5px}
footer a:hover{color:#fff}
footer h4{color:#fff;font-size:13px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:16px}
footer ul{list-style:none;display:grid;gap:10px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding-top:24px;font-size:13px;color:#69737f;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- Service detail page ---------- */
.breadcrumb{padding:22px 0 0;font-size:13.5px;color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--faint);margin:0 8px}
.breadcrumb .cur{color:var(--ink);font-weight:600}
.detail-hero{padding:34px 0 60px;border-bottom:1px solid var(--line)}
.detail-hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.08;font-weight:800;letter-spacing:-.02em;max-width:18ch}
.detail-hero p{color:var(--muted);font-size:clamp(17px,2vw,20px);margin-top:20px;max-width:60ch}
.detail-hero .cta{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:48px}
.related a{display:flex;justify-content:space-between;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:20px 22px;font-weight:700;font-size:16px;transition:border-color .15s ease,color .15s ease,transform .15s ease}
.related a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.related a .arr{color:var(--faint);font-weight:400}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .hero-media img{height:300px}
  .svc,.approach,.insights{grid-template-columns:1fr}
  .svc .card{border-right:none}
  .svc .card:nth-last-child(2){border-bottom:1px solid var(--line)}
  .split{grid-template-columns:1fr;gap:36px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metrics .m:nth-child(2){border-right:none}
  footer .cols{grid-template-columns:1fr 1fr}
  .nav-links a:not(.lang a){display:none}
  .nav-links .btn{display:none}
}
@media(max-width:560px){
  .section{padding:64px 0}
  .metrics{grid-template-columns:1fr 1fr}
  .band{padding:40px 28px}
  footer .cols{grid-template-columns:1fr}
  .follow{grid-template-columns:1fr;text-align:center;justify-items:center}
  .related{grid-template-columns:1fr}
}