/* ============ INIGMA INSIGHTS ============ */
:root {
  --bg: #101010;
  --bg-soft: #181818;
  --bg-card: #1e1d1b;
  --line: #2e2c28;
  --cream: #f2ecdd;
  --cream-dim: #b8b2a4;
  --accent: #d9a441;
  --accent-soft: #e8c37c;
  --max: 1120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--cream);
  font-family: "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* language toggle: html[data-lang] controls visibility */
html[data-lang="en"] .zh { display: none !important; }
html[data-lang="zh"] .en { display: none !important; }

h1, h2, h3, h4, .serif {
  font-family: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  font-weight: 400;
  letter-spacing: .02em;
  line-height: 1.3;
}

a { color: var(--accent-soft); text-decoration: none; }
a:hover { color: var(--accent); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* ---------- header ---------- */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(16,16,16,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex; align-items: center; gap: 12px;
  color: var(--cream); font-family: Georgia, serif;
  font-size: 19px; letter-spacing: .18em;
}
.logo .mark {
  width: 34px; height: 34px; flex: 0 0 auto;
  border: 1px solid var(--accent);
  display: grid; place-items: center;
  font-size: 13px; color: var(--accent); letter-spacing: .05em;
}
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a {
  color: var(--cream-dim); font-size: 14.5px; letter-spacing: .06em;
}
.nav-links a:hover, .nav-links a.active { color: var(--cream); }
.lang-btn {
  border: 1px solid var(--line); background: none; color: var(--cream-dim);
  padding: 6px 14px; font-size: 13px; cursor: pointer; letter-spacing: .08em;
}
.lang-btn:hover { border-color: var(--accent); color: var(--accent); }

.menu-btn { display: none; background: none; border: none; color: var(--cream); font-size: 24px; cursor: pointer; }

/* ---------- hero ---------- */
.hero {
  padding: 110px 0 90px; position: relative; overflow: hidden; isolation: isolate;
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(217,164,65,.08), transparent 60%),
    linear-gradient(180deg, #141414 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; top: 72px; right: 4%; bottom: 72px;
  width: min(38vw, 440px); z-index: -2;
  background: url("images/hero-insight.jpg") center / contain no-repeat;
  opacity: .78; filter: saturate(.92) contrast(1.07);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 24%, #000 78%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 24%, #000 78%, transparent 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    linear-gradient(90deg, #131313 0%, rgba(16,16,16,.98) 28%, rgba(16,16,16,.84) 47%, rgba(16,16,16,.30) 72%, var(--bg) 100%),
    linear-gradient(180deg, rgba(16,16,16,.62) 0%, transparent 24%, transparent 68%, var(--bg) 100%);
}
.hero-grid {
  position: relative;
}
.hero-copy { position: relative; max-width: 820px; }
.hero .kicker {
  color: var(--accent); letter-spacing: .3em; font-size: 13px;
  text-transform: uppercase; margin-bottom: 26px;
}
.hero h1 { font-size: clamp(30px, 4vw, 49px); max-width: 790px; }
.hero p.sub {
  margin-top: 28px; max-width: 760px;
  color: var(--cream-dim); font-size: 18px;
}
.hero .cta-row { margin-top: 42px; display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 13px 30px; font-size: 15px;
  letter-spacing: .08em; border: 1px solid var(--accent);
  color: var(--accent); transition: all .2s;
}
.btn:hover { background: var(--accent); color: #111; }
.btn.solid { background: var(--accent); color: #111; }
.btn.solid:hover { background: var(--accent-soft); border-color: var(--accent-soft); color: #111; }

/* ---------- sections ---------- */
section { padding: 84px 0; }
section.alt { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.sec-head { margin-bottom: 48px; }
.sec-head .kicker {
  color: var(--accent); letter-spacing: .28em; font-size: 12.5px;
  text-transform: uppercase; margin-bottom: 14px;
}
.sec-head h2 { font-size: clamp(26px, 3.4vw, 38px); }
.sec-head p.lead { margin-top: 16px; color: var(--cream-dim); max-width: 800px; }

/* metrics */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.metric {
  border: 1px solid var(--line); background: var(--bg-card);
  padding: 30px 26px;
}
.metric .num {
  font-family: Georgia, serif; font-size: 38px; color: var(--accent);
  margin-bottom: 8px;
}
.metric .desc { color: var(--cream-dim); font-size: 14.5px; line-height: 1.6; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.card {
  border: 1px solid var(--line); background: var(--bg-card);
  padding: 36px 32px; display: flex; flex-direction: column;
  overflow: hidden; transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--accent); transform: translateY(-3px); }
.card .no {
  font-family: Georgia, serif; color: var(--accent); font-size: 15px;
  letter-spacing: .2em; margin-bottom: 14px;
}
.card h3 { font-size: 22px; margin-bottom: 14px; }
.card p { color: var(--cream-dim); font-size: 15.5px; flex: 1; }
.card .more { margin-top: 22px; font-size: 14.5px; letter-spacing: .06em; }

/* quotes */
.quotes { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
blockquote {
  border-left: 2px solid var(--accent);
  background: var(--bg-card);
  padding: 30px 32px; font-style: italic; color: var(--cream);
  font-size: 16.5px;
}
blockquote footer {
  margin-top: 16px; font-style: normal; color: var(--accent-soft);
  font-size: 14px; letter-spacing: .04em;
  background: none; border: none; padding: 0;
}

/* tables */
.tbl { width: 100%; border-collapse: collapse; margin-top: 8px; }
.tbl th, .tbl td {
  text-align: left; padding: 14px 18px; border: 1px solid var(--line);
  font-size: 15px; vertical-align: top;
}
.tbl th { color: var(--accent); font-weight: 600; letter-spacing: .04em; background: var(--bg-card); white-space: nowrap; }
.tbl td { color: var(--cream-dim); }
.tbl td strong { color: var(--cream); font-weight: 600; }

/* lists */
.ticks { list-style: none; }
.ticks li {
  padding: 9px 0 9px 30px; position: relative; color: var(--cream-dim);
  font-size: 15.5px;
}
.ticks li::before {
  content: "—"; position: absolute; left: 0; color: var(--accent);
}

.pill-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.pill {
  border: 1px solid var(--line); color: var(--cream-dim);
  padding: 7px 16px; font-size: 13.5px; letter-spacing: .05em;
}

/* two-column layout */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }

/* service detail blocks */
.svc { padding: 70px 0; border-bottom: 1px solid var(--line); }
.svc:last-of-type { border-bottom: none; }
.svc .svc-no { color: var(--accent); letter-spacing: .25em; font-size: 13px; margin-bottom: 12px; }
.svc h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 6px; }
.svc .tagline { color: var(--accent-soft); font-size: 18px; margin-bottom: 20px; font-family: Georgia, serif; }
.svc p.intro { color: var(--cream-dim); max-width: 860px; margin-bottom: 34px; }
.svc h4 { color: var(--cream); font-size: 17px; letter-spacing: .1em; text-transform: uppercase; margin: 34px 0 14px; }
.svc h4:first-of-type { margin-top: 0; }

/* case studies */
.case {
  border: 1px solid var(--line); background: var(--bg-card);
  padding: 44px 40px; margin-bottom: 28px;
}
.case h3 { font-size: 24px; margin-bottom: 24px; }
.case h3 .tag { color: var(--accent); }
.case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 40px; }
.case h5 {
  color: var(--accent); font-size: 13px; letter-spacing: .2em;
  text-transform: uppercase; margin: 18px 0 8px; font-family: inherit;
}
.case p, .case li { color: var(--cream-dim); font-size: 15.5px; }
.case ul { list-style: none; }
.case li { padding: 4px 0 4px 22px; position: relative; }
.case li::before { content: "·"; position: absolute; left: 6px; color: var(--accent); font-size: 22px; line-height: 1; }
.case .result { color: var(--cream); }
.case blockquote { margin-top: 20px; padding: 18px 22px; font-size: 15px; }

/* founder */
.founder { display: grid; grid-template-columns: 300px 1fr; gap: 48px; align-items: start; }
.founder .portrait {
  border: 1px solid var(--line); background: var(--bg-card);
  aspect-ratio: 3/4; display: grid; place-items: center;
  color: var(--cream-dim); font-family: Georgia, serif; font-size: 15px;
  letter-spacing: .15em; text-align: center; padding: 20px;
}

/* contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact-list { list-style: none; margin-top: 26px; }
.contact-list li { padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--cream-dim); font-size: 16px; }
.contact-list li span.k { color: var(--accent); letter-spacing: .08em; display: inline-block; min-width: 110px; }

form .field { margin-bottom: 20px; }
form label { display: block; font-size: 14px; letter-spacing: .06em; color: var(--cream); margin-bottom: 8px; }
form label .req { color: var(--accent); }
form input, form textarea {
  width: 100%; background: var(--bg-card); border: 1px solid var(--line);
  color: var(--cream); padding: 13px 16px; font-size: 15.5px; font-family: inherit;
}
form input:focus, form textarea:focus { outline: none; border-color: var(--accent); }
form textarea { min-height: 140px; resize: vertical; }
.form-note { color: var(--cream-dim); font-size: 13.5px; margin-top: 14px; }

/* footer */
footer.site {
  border-top: 1px solid var(--line); background: #0c0c0c;
  padding: 54px 0 40px; margin-top: 40px;
}
.foot-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
footer.site .logo { margin-bottom: 14px; }
footer.site p, footer.site li { color: var(--cream-dim); font-size: 14.5px; }
footer.site ul { list-style: none; }
footer.site li { padding: 3px 0; }
.copyright { margin-top: 40px; color: #6d6a61; font-size: 13px; letter-spacing: .04em; }

/* cta band */
.cta-band {
  background: linear-gradient(120deg, #1c1a15, #14130f);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 70px 0; text-align: center;
}
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 18px; }
.cta-band p { color: var(--cream-dim); max-width: 680px; margin: 0 auto 32px; }

/* page hero (inner pages) */
.page-hero { padding: 80px 0 60px; border-bottom: 1px solid var(--line); position: relative; overflow: hidden;
  background: radial-gradient(800px 400px at 90% -20%, rgba(217,164,65,.07), transparent 60%);
}
.page-hero .wrap { position: relative; z-index: 1; }
.page-hero .kicker { color: var(--accent); letter-spacing: .3em; font-size: 12.5px; text-transform: uppercase; margin-bottom: 16px; }
.page-hero h1 { font-size: clamp(30px, 4vw, 46px); max-width: 780px; }
.page-hero p { margin-top: 18px; color: var(--cream-dim); max-width: 800px; }

/* sub nav for services */
.subnav { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
.subnav a {
  border: 1px solid var(--line); padding: 9px 18px; font-size: 14px;
  color: var(--cream-dim); letter-spacing: .04em;
}
.subnav a:hover { border-color: var(--accent); color: var(--accent); }

/* compare table (workshops) */
.vs td:first-child { color: #8d8a80; }
.vs td:last-child { color: var(--cream); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .cards, .quotes, .split, .case-grid, .contact-grid { grid-template-columns: 1fr; }
  .founder { grid-template-columns: 1fr; }
  .founder .portrait { max-width: 280px; }
}
@media (max-width: 760px) {
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: #141414; border-bottom: 1px solid var(--line);
    flex-direction: column; padding: 20px 28px; gap: 18px; align-items: flex-start;
  }
  .nav-links.open { display: flex; }
  .menu-btn { display: block; }
  .hero { padding: 70px 0 60px; }
  .hero::before {
    top: 140px; right: -64px; bottom: auto; width: 300px; height: 375px;
    background-position: center; background-size: contain; opacity: .54;
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 30%, #000 72%, transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0%, #000 30%, #000 72%, transparent 100%);
  }
  .hero::after {
    background:
      linear-gradient(90deg, rgba(16,16,16,.98) 0%, rgba(16,16,16,.82) 54%, rgba(16,16,16,.42) 82%, var(--bg) 100%),
      linear-gradient(180deg, var(--bg) 0%, rgba(16,16,16,.28) 19%, rgba(16,16,16,.72) 48%, var(--bg) 72%);
  }
  section { padding: 60px 0; }
}