/* SANBING — corporate stylesheet */
:root {
  --navy: #0d1f3c;
  --navy-deep: #091729;
  --gold: #b08d57;
  --ink: #1b2330;
  --ink-2: #4c5768;
  --ink-3: #8a94a6;
  --paper: #ffffff;
  --soft: #f6f7f9;
  --line: #e5e8ee;
  --maxw: 1160px;
  --serif: Georgia, "Times New Roman", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color 0.2s; }
img, svg { vertical-align: middle; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

h1, h2, h3, .serif { font-family: var(--serif); font-weight: 600; letter-spacing: 0.02em; }

.eyebrow {
  display: block; font-family: var(--sans); font-size: 12.5px; font-weight: 600;
  letter-spacing: 0.32em; text-transform: uppercase; color: var(--gold);
  margin-bottom: 18px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center;
  height: 76px; max-width: var(--maxw); margin: 0 auto; padding: 0 28px;
}
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand .wordmark {
  font-family: var(--serif); font-size: 22px; font-weight: 700;
  letter-spacing: 0.14em; color: var(--navy);
}
.brand .brand-sub {
  font-size: 12px; color: var(--ink-3); letter-spacing: 0.18em;
  border-left: 1px solid var(--line); padding-left: 12px;
}
.nav-links { display: flex; gap: 38px; align-items: center; margin-left: auto; }
.nav-links a { color: var(--ink-2); font-size: 15px; }
.nav-links a:hover, .nav-links a.active { color: var(--navy); }
.nav-links a.active { border-bottom: 2px solid var(--gold); padding-bottom: 4px; }
.nav-cta {
  border: 1px solid var(--navy); color: var(--navy) !important;
  padding: 9px 26px; font-size: 14px !important; letter-spacing: 0.06em;
  transition: all 0.2s;
}
.nav-cta:hover { background: var(--navy); color: #fff !important; }
.nav-toggle { display: none; margin-left: auto; background: none; border: none; font-size: 26px; color: var(--navy); cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(176, 141, 87, 0.14), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, rgba(38, 78, 148, 0.25), transparent 55%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: #fff;
  padding: 130px 0 120px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(800px 500px at 70% 30%, #000, transparent);
  -webkit-mask-image: radial-gradient(800px 500px at 70% 30%, #000, transparent);
}
.hero .container { position: relative; z-index: 1; }
.hero h1 {
  font-size: 52px; line-height: 1.35; font-weight: 600; max-width: 800px;
}
.hero .sub {
  max-width: 640px; margin-top: 26px; color: rgba(255, 255, 255, 0.72);
  font-size: 17.5px; line-height: 2;
}
.hero .actions { margin-top: 48px; display: flex; gap: 18px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 14px 40px; font-size: 15px;
  letter-spacing: 0.08em; border: 1px solid transparent; transition: all 0.2s;
}
.btn-solid { background: var(--gold); color: #fff; }
.btn-solid:hover { background: #9a7a49; }
.btn-line { border-color: rgba(255, 255, 255, 0.45); color: #fff; }
.btn-line:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-deep); }
.btn-outline { border-color: var(--navy); color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* ---------- Stats band ---------- */
.stats { border-bottom: 1px solid var(--line); background: var(--paper); }
.stats .row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  max-width: var(--maxw); margin: 0 auto; padding: 0 28px;
}
.stats .cell {
  padding: 44px 20px; text-align: center;
  border-left: 1px solid var(--line);
}
.stats .cell:first-child { border-left: none; }
.stats b { display: block; font-family: var(--serif); font-size: 38px; font-weight: 600; color: var(--navy); line-height: 1.3; }
.stats span { color: var(--ink-3); font-size: 13.5px; letter-spacing: 0.08em; }

/* ---------- Sections ---------- */
.section { padding: 110px 0; }
.section.soft { background: var(--soft); }
.section-head { margin-bottom: 64px; }
.section-head.center { text-align: center; }
.section-head h2 { font-size: 36px; color: var(--navy); }
.section-head .lead { color: var(--ink-2); margin-top: 16px; max-width: 620px; font-size: 16.5px; }
.section-head.center .lead { margin-left: auto; margin-right: auto; }

/* ---------- Business (numbered) ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.biz {
  padding: 52px 40px 56px; border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line); background: var(--paper);
  transition: background 0.25s;
}
.biz:first-child { border-left: none; }
.biz:hover { background: var(--soft); }
.biz .num {
  font-family: var(--serif); font-size: 15px; color: var(--gold);
  letter-spacing: 0.2em; display: block; margin-bottom: 26px;
}
.biz h3 { font-size: 22px; color: var(--navy); margin-bottom: 16px; }
.biz p { color: var(--ink-2); font-size: 15px; }
.biz .more {
  display: inline-block; margin-top: 26px; font-size: 13.5px; color: var(--navy);
  letter-spacing: 0.12em; border-bottom: 1px solid var(--gold); padding-bottom: 3px;
}
.biz .more:hover { color: var(--gold); }

/* ---------- Value cards ---------- */
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.value {
  background: var(--paper); border: 1px solid var(--line); padding: 40px 32px;
  border-top: 3px solid var(--navy); transition: all 0.25s;
}
.value:hover { border-top-color: var(--gold); box-shadow: 0 16px 40px rgba(13, 31, 60, 0.07); }
.value h3 { font-size: 18px; color: var(--navy); margin-bottom: 12px; }
.value p { color: var(--ink-2); font-size: 14.5px; }

/* ---------- Process ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; counter-reset: step; }
.step { position: relative; padding-top: 30px; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  font-family: var(--serif); font-size: 44px; color: var(--line);
  position: absolute; top: -18px; left: 0; font-weight: 600; z-index: 0;
}
.step h3 { font-size: 17px; color: var(--navy); margin-bottom: 10px; position: relative; }
.step p { color: var(--ink-2); font-size: 14.5px; position: relative; }
.step .rule { width: 44px; height: 2px; background: var(--gold); margin-bottom: 18px; position: relative; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(150deg, var(--navy), var(--navy-deep));
  color: #fff; text-align: center; padding: 96px 28px;
}
.cta-band h2 { font-size: 34px; }
.cta-band p { color: rgba(255, 255, 255, 0.7); margin-top: 14px; }
.cta-band .btn { margin-top: 40px; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(160deg, var(--navy), var(--navy-deep));
  color: #fff; padding: 88px 0 76px;
}
.page-hero h1 { font-size: 40px; }
.page-hero p { color: rgba(255, 255, 255, 0.7); margin-top: 14px; max-width: 640px; }

/* ---------- Service blocks ---------- */
.svc { padding: 96px 0; border-bottom: 1px solid var(--line); }
.svc:last-of-type { border-bottom: none; }
.svc .inner { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 72px; }
.svc h2 { font-size: 30px; color: var(--navy); margin-bottom: 18px; }
.svc .desc { color: var(--ink-2); }
.svc .cap-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 32px; margin-top: 8px; }
.svc .cap-list li {
  padding: 16px 0 16px 24px; border-bottom: 1px solid var(--line);
  color: var(--ink-2); font-size: 15px; position: relative;
}
.svc .cap-list li::before {
  content: ""; position: absolute; left: 0; top: 26px;
  width: 8px; height: 2px; background: var(--gold);
}
.svc .cap-list li b { color: var(--ink); font-weight: 600; }

/* ---------- Pricing ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--line); }
.plan { padding: 52px 40px; border-left: 1px solid var(--line); background: var(--paper); }
.plan:first-child { border-left: none; }
.plan.featured { background: var(--navy); color: #fff; }
.plan .plan-name { font-family: var(--serif); font-size: 20px; color: var(--navy); }
.plan.featured .plan-name { color: var(--gold); }
.plan .plan-price { font-family: var(--serif); font-size: 30px; margin: 18px 0 6px; }
.plan .plan-price small { font-size: 14px; font-family: var(--sans); color: var(--ink-3); }
.plan.featured .plan-price small { color: rgba(255, 255, 255, 0.6); }
.plan .plan-for { font-size: 13.5px; color: var(--ink-3); letter-spacing: 0.05em; }
.plan.featured .plan-for { color: rgba(255, 255, 255, 0.6); }
.plan ul { list-style: none; margin: 30px 0 0; }
.plan ul li {
  padding: 11px 0 11px 22px; font-size: 14.5px; color: var(--ink-2);
  border-bottom: 1px solid var(--line); position: relative;
}
.plan.featured ul li { color: rgba(255, 255, 255, 0.82); border-bottom-color: rgba(255, 255, 255, 0.12); }
.plan ul li::before {
  content: ""; position: absolute; left: 0; top: 21px;
  width: 8px; height: 2px; background: var(--gold);
}
.plan .btn { width: 100%; text-align: center; margin-top: 36px; }
.plan.featured .btn { background: var(--gold); color: #fff; border: none; }

/* ---------- Article (legal) ---------- */
.article { max-width: 860px; margin: 0 auto; padding: 72px 28px 110px; }
.article h2 { font-size: 23px; margin: 44px 0 16px; color: var(--navy); }
.article h3 { font-size: 17px; margin: 28px 0 10px; font-family: var(--sans); font-weight: 600; }
.article p, .article li { color: var(--ink-2); font-size: 15.5px; }
.article ul, .article ol { margin: 12px 0 12px 24px; }
.article li { margin-bottom: 8px; }
.article table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14.5px; }
.article th, .article td { border: 1px solid var(--line); padding: 12px 16px; text-align: left; color: var(--ink-2); }
.article th { background: var(--soft); color: var(--navy); font-weight: 600; }
.article .notice {
  background: var(--soft); border-left: 3px solid var(--gold);
  padding: 18px 24px; margin: 24px 0;
}
.article .updated { color: var(--ink-3); font-size: 14px; margin-bottom: 28px; }
.article a { color: var(--navy); border-bottom: 1px solid var(--gold); }
.article a:hover { color: var(--gold); }

/* ---------- Contact ---------- */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.contact-card { background: var(--soft); border: 1px solid var(--line); padding: 48px; }
.contact-card h3 { font-size: 20px; color: var(--navy); margin-bottom: 24px; }
.contact-card .row { display: flex; gap: 18px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.contact-card .row:last-child { border-bottom: none; }
.contact-card .row .k { color: var(--ink-3); min-width: 88px; }
.contact-card .row .v { color: var(--ink); }
.contact-card .row .v a { color: var(--navy); border-bottom: 1px solid var(--gold); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: #93a0b5; padding: 72px 0 36px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.site-footer .wordmark {
  font-family: var(--serif); font-size: 20px; font-weight: 700;
  letter-spacing: 0.14em; color: #fff; display: block; margin-bottom: 18px;
}
.site-footer h4 {
  color: #fff; font-size: 14px; margin-bottom: 20px; font-family: var(--sans);
  font-weight: 600; letter-spacing: 0.12em;
}
.site-footer a { color: #93a0b5; display: block; margin-bottom: 12px; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.site-footer .desc { font-size: 13.5px; max-width: 320px; line-height: 2; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.09); margin-top: 56px; padding-top: 28px;
  font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.footer-bottom a { display: inline; margin: 0 0 0 20px; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero h1 { font-size: 36px; }
  .hero { padding: 88px 0 80px; }
  .section { padding: 76px 0; }
  .stats .row { grid-template-columns: repeat(2, 1fr); }
  .stats .cell:nth-child(3) { border-left: none; }
  .stats .cell { border-top: 1px solid var(--line); padding: 30px 16px; }
  .stats .cell:nth-child(-n+2) { border-top: none; }
  .biz-grid { grid-template-columns: 1fr; }
  .biz { border-left: none; }
  .value-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .svc .inner { grid-template-columns: 1fr; gap: 32px; }
  .plans { grid-template-columns: 1fr; }
  .plan { border-left: none; border-top: 1px solid var(--line); }
  .plan:first-child { border-top: none; }
  .contact-wrap { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links {
    display: none; position: absolute; top: 76px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: flex-start;
    padding: 22px 28px; gap: 18px; border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .brand .brand-sub { display: none; }
}
@media (max-width: 600px) {
  .hero h1 { font-size: 29px; }
  .value-grid, .steps, .svc .cap-list { grid-template-columns: 1fr; }
  .section-head h2 { font-size: 28px; }
}