/* Self-hosted fonts (SIL OFL 1.1; licenses in assets/fonts/) */
@font-face { font-family: "Fraunces"; font-style: normal; font-weight: 400; font-display: swap; src: url("fonts/fraunces-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Fraunces"; font-style: normal; font-weight: 600; font-display: swap; src: url("fonts/fraunces-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400; font-display: swap; src: url("fonts/inter-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 500; font-display: swap; src: url("fonts/inter-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 600; font-display: swap; src: url("fonts/inter-latin-600-normal.woff2") format("woff2"); }

:root {
  --navy: #0b1a33;
  --navy-2: #102447;
  --ink: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-alt: #f5f8fb;
  --teal: #5eead4;
  --teal-deep: #0f766e;
  --radius: 14px;
  --serif: "Fraunces", Georgia, "Times New Roman", "Songti SC", "Noto Serif SC", "Noto Serif CJK SC", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Noto Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--bg); line-height: 1.65; -webkit-font-smoothing: antialiased; }
img, svg { max-width: 100%; display: block; }
a { color: var(--teal-deep); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; }
h1, h2 { font-family: var(--serif); font-weight: 600; letter-spacing: -.01em; }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.5rem); }
h3 { font-size: 1.125rem; font-weight: 600; }
p { margin: 0 0 1em; }
.container { width: min(1120px, 100% - 2.5rem); margin-inline: auto; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(11, 26, 51, .92); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(94, 234, 212, .12); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: #f8fafc; font-family: var(--serif); font-weight: 600; font-size: 1.15rem; letter-spacing: .01em; }
.brand img { border-radius: 8px; }
.nav-links { display: flex; gap: 1.75rem; list-style: none; margin: 0; padding: 0; align-items: center; }
.nav-links a { color: #cbd5e1; text-decoration: none; font-size: .95rem; font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: #fff; }
.nav-links .nav-cta { color: var(--navy); background: var(--teal); padding: .45rem 1rem; border-radius: 999px; }
.nav-links .nav-cta:hover { color: var(--navy); background: #99f6e4; }
.nav-toggle { display: none; background: none; border: 0; padding: .5rem; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #e2e8f0; margin: 5px 0; border-radius: 2px; }

/* Hero */
.hero { position: relative; overflow: hidden; background: radial-gradient(1200px 600px at 75% 30%, #14315e 0%, var(--navy) 60%); color: #e2e8f0; padding: clamp(5rem, 12vw, 9rem) 0 clamp(5rem, 10vw, 8rem); }
.hero-network { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .9; }
.hero-inner { position: relative; max-width: 1120px; }
.hero h1 { font-size: clamp(2.75rem, 7vw, 5rem); color: #fff; margin-bottom: .3em; }
.lede { font-size: clamp(1.1rem, 2vw, 1.35rem); max-width: 36ch; color: #cbd5e1; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 600; color: var(--teal); margin-bottom: 1rem; }
.eyebrow.dark { color: var(--teal-deep); }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2rem; }
.btn { display: inline-block; padding: .8rem 1.5rem; border-radius: 999px; font-weight: 600; text-decoration: none; transition: transform .15s, background .2s, border-color .2s; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--teal); color: var(--navy); }
.btn-primary:hover { background: #99f6e4; }
.btn-ghost { border: 1px solid rgba(226, 232, 240, .35); color: #e2e8f0; }
.btn-ghost:hover { border-color: var(--teal); }

/* Sections */
.section { padding: clamp(4rem, 8vw, 6.5rem) 0; }
.section-alt { background: var(--bg-alt); background-image: radial-gradient(rgba(15, 118, 110, .08) 1px, transparent 1px); background-size: 22px 22px; }
.section-intro { color: var(--muted); max-width: 60ch; font-size: 1.05rem; margin-bottom: 2.5rem; }
.two-col { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.prose p { color: var(--muted); font-size: 1.075rem; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.25rem; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.75rem; transition: transform .2s, box-shadow .2s, border-color .2s; }
.card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px -12px rgba(11, 26, 51, .18); border-color: rgba(15, 118, 110, .35); }
.card-icon { width: 44px; height: 44px; color: var(--teal-deep); margin-bottom: 1rem; }
.card p { color: var(--muted); margin: 0; font-size: .98rem; }

/* Steps */
.steps { list-style: none; padding: 0; margin: 2rem 0 3rem; display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; counter-reset: none; }
.steps li { border-top: 2px solid var(--navy); padding-top: 1.25rem; }
.step-num { font-family: var(--serif); font-size: 1.5rem; color: var(--teal-deep); display: block; margin-bottom: .5rem; }
.steps p { color: var(--muted); margin: 0; }

.about-meta { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: .4rem; }
.about-meta li { font-weight: 500; color: var(--ink); }
.about-meta span { text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; font-weight: 600; color: var(--muted); margin-right: .6rem; }
.prose .about-intro { font-size: 1.2rem; color: var(--ink); line-height: 1.55; }
.founder-card { margin-top: 2rem; padding: 1.5rem 1.75rem; border: 1px solid var(--line); border-left: 3px solid var(--teal-deep); border-radius: var(--radius); background: var(--bg-alt); }
.founder-card .founder-name { font-family: var(--serif); font-size: 1.35rem; font-weight: 600; color: var(--navy); margin: 0; }
.prose .founder-card .founder-role { font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; color: var(--teal-deep); font-weight: 600; margin: .15rem 0 1rem; }
.founder-card ul { margin: 0; padding-left: 1.1rem; color: var(--muted); font-size: .98rem; }
.founder-card li { margin-bottom: .5rem; }
.founder-card li:last-child { margin-bottom: 0; }
.founder-card li::marker { color: var(--teal-deep); }

/* Strategic partners */
.partners-grid { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1.25rem; }
.wordmark { display: flex; align-items: center; justify-content: center; min-height: 120px; padding: 1.5rem 1rem; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); font-family: var(--serif); font-size: 1.4rem; font-weight: 600; color: var(--navy); text-align: center; letter-spacing: .01em; word-break: break-word; }
.wordmark:lang(zh-Hans) { font-family: "PingFang SC", "Noto Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif; letter-spacing: .08em; }
.section-dark a { color: var(--teal); }

/* Founders */
.section-dark { background: linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%); color: #e2e8f0; position: relative; overflow: hidden; }
.section-dark::after { content: ""; position: absolute; right: -120px; top: -120px; width: 420px; height: 420px; border-radius: 50%; border: 1px solid rgba(94, 234, 212, .15); box-shadow: 0 0 0 60px rgba(94, 234, 212, .03), 0 0 0 120px rgba(94, 234, 212, .02); pointer-events: none; }
.section-dark h2 { color: #fff; }
.section-dark .container { position: relative; z-index: 1; }
.lede-sm { color: #cbd5e1; font-size: 1.1rem; max-width: 40ch; }
.list-title { color: #fff; }
.checklist { list-style: none; padding: 0; margin: 0 0 2rem; }
.checklist li { position: relative; padding-left: 1.9rem; margin-bottom: .75rem; color: #cbd5e1; }
.checklist li::before { content: ""; position: absolute; left: 0; top: .45em; width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--teal); box-shadow: inset 0 0 0 3px var(--navy), inset 0 0 0 10px var(--teal); }
.fine { margin-top: 1.25rem; color: #94a3b8; font-size: .95rem; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); max-width: 760px; gap: 1.25rem; }
.contact-item { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; }
.contact-item h3 { font-size: .8rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }
.contact-item p { margin: 0; }

/* Footer */
.site-footer { background: var(--navy); color: #94a3b8; padding: 2.5rem 0; font-size: .9rem; }
.footer-inner { display: grid; gap: .75rem; }
.footer-inner p { margin: 0; }
.disclaimer { font-size: .82rem; color: #94a3b8; max-width: 90ch; line-height: 1.6; }
.footer-links a { color: #cbd5e1; text-decoration: none; }
.footer-links a:hover { color: var(--teal); text-decoration: underline; }
.footer-links span { margin: 0 .5rem; color: #475569; }

/* Legal pages */
.legal-page { padding: clamp(3rem, 7vw, 5rem) 0 clamp(4rem, 8vw, 6rem); }
.legal { max-width: 720px; }
.legal h1 { font-size: clamp(2rem, 5vw, 2.75rem); margin-bottom: .25em; color: var(--navy); }
.legal .updated { color: var(--muted); font-size: .9rem; margin-bottom: 2.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.legal section { margin-bottom: 2rem; }
.legal h2 { font-family: var(--sans); font-size: 1.1rem; font-weight: 600; color: var(--ink); margin-bottom: .5em; }
.legal p { color: #334155; font-size: 1rem; overflow-wrap: anywhere; }

/* Responsive */
@media (max-width: 860px) {
  .two-col, .steps, .contact-grid { grid-template-columns: 1fr; }
  .steps { gap: 1.5rem; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: flex-start; gap: 0; background: var(--navy); padding: .5rem 1.25rem 1.25rem; border-bottom: 1px solid rgba(94, 234, 212, .15); }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: .75rem 0; }
  .nav-links .nav-cta { display: inline-block; margin-top: .5rem; padding: .5rem 1.1rem; }
  .hero-network { opacity: .55; }
  .cards { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }

.partners-note { margin-top: 1.5rem; color: var(--muted); font-size: .9rem; max-width: 70ch; }


.hero-vision { margin-top: 1.25rem; color: #e2e8f0; font-family: var(--serif); font-size: clamp(1.05rem, 1.8vw, 1.2rem); }
.hero-vision span { font-family: var(--sans); text-transform: uppercase; letter-spacing: .14em; font-size: .72rem; font-weight: 600; color: var(--teal); margin-right: .6rem; }

#offer .cards { grid-template-columns: repeat(6, 1fr); align-items: stretch; }
#offer .card { grid-column: span 2; display: flex; flex-direction: column; }
#offer .card:nth-child(4), #offer .card:nth-child(5) { grid-column: span 3; }
@media (max-width: 860px) { #offer .cards { grid-template-columns: 1fr 1fr; } #offer .card, #offer .card:nth-child(4), #offer .card:nth-child(5) { grid-column: auto; } #offer .card:nth-child(5) { grid-column: 1 / -1; } }
@media (max-width: 720px) { #offer .cards { grid-template-columns: 1fr; } #offer .card:nth-child(5) { grid-column: auto; } }
.soon { display: inline-block; margin-left: .35rem; padding: .1rem .5rem; border-radius: 999px; background: rgba(15,118,110,.1); color: var(--teal-deep); font-size: .7rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; vertical-align: middle; }
.fda-note { margin-top: 1.75rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; max-width: 90ch; }

.area-list { list-style: none; padding: 0; margin: 1.5rem 0 0; display: flex; flex-wrap: wrap; gap: .75rem; }
.area-list li { padding: .7rem 1.25rem; border: 1px solid rgba(15,118,110,.3); border-radius: 999px; background: #fff; color: var(--navy); font-weight: 500; }

.team-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-top: 2rem; align-items: stretch; }
.team-grid .founder-card { margin-top: 0; background: #fff; }
.team-lead { grid-column: 1 / -1; }
.team-card { display: flex; flex-direction: column; justify-content: center; }
.prose .founder-card .founder-role, .team-grid .founder-card .founder-role { font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; color: var(--teal-deep); font-weight: 600; margin: .15rem 0 1rem; }
.team-card { justify-content: flex-start; }
.team-bio { margin: 0; color: var(--muted); font-size: .95rem; }
@media (max-width: 860px) { .team-grid { grid-template-columns: 1fr; } .team-lead { grid-column: auto; } }


/* Hero R.E.D. block */
.hero { padding: clamp(2.5rem, 6vw, 4rem) 0 clamp(2.5rem, 5vw, 3.5rem); }
.hero h1 { margin-bottom: .2em; }
.hero .lede { max-width: 52ch; margin-bottom: .5rem; }
.hero-vision { margin-top: .75rem; }
.hero-red { margin-top: 2rem; scroll-margin-top: 90px; }
.hero-red-title { color: #fff; font-family: var(--serif); font-size: clamp(1.15rem, 2.2vw, 1.5rem); margin-bottom: 1rem; }
.hero-red-title span { font-family: var(--sans); text-transform: uppercase; letter-spacing: .14em; font-size: .72rem; font-weight: 600; color: var(--teal); margin-right: .75rem; vertical-align: middle; }
.hero-red-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.hero-red-card { display: flex; gap: 1rem; align-items: flex-start; padding: 1.1rem 1.25rem; border-radius: var(--radius); background: rgba(11,26,51,.72); border: 1px solid rgba(94,234,212,.25); backdrop-filter: blur(6px); }
.hero-red-letter { font-family: var(--serif); font-size: 2.75rem; line-height: 1; font-weight: 600; color: var(--teal); min-width: 1.6rem; }
.hero-red-card h3 { color: #fff; font-size: 1rem; margin: .1rem 0 .3rem; }
.hero-red-card p { color: #cbd5e1; font-size: .9rem; line-height: 1.5; margin: 0; }
@media (max-width: 860px) {
  .hero-red-grid { grid-template-columns: 1fr; gap: .6rem; }
  .hero-red { margin-top: 1rem; }
  .hero-red-title { margin-bottom: .6rem; }
  .hero-red-title span { display: block; margin-bottom: .2rem; }
  .hero-red-card { padding: .75rem 1rem; gap: .85rem; }
  .hero-red-letter { font-size: 2.1rem; min-width: 1.4rem; }
  .hero-red-card h3 { font-size: .95rem; margin: 0 0 .15rem; }
  .hero-red-card p { font-size: .82rem; line-height: 1.45; }
  .hero h1 { font-size: 2.4rem; }
  .hero .lede { font-size: 1rem; }
  .hero-vision { font-size: 1rem; }
  .hero .eyebrow { margin-bottom: .6rem; font-size: .7rem; }
}