:root {
  --bg: #060807;
  --bg-2: #0a0e0c;
  --ink: #eef3ef;
  --muted: #93a29a;
  --faint: #6c7a72;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --mint: #8fe3b8;
  --sand: #d8c39a;
  --sans: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", Georgia, serif;
  --max: 1180px;
  --pad: clamp(20px, 5vw, 64px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
::selection { background: rgba(143, 227, 184, 0.25); color: #fff; }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--mint); color: #04120b; padding: 10px 16px;
  border-radius: 8px; font-weight: 600; transition: top 0.2s;
}
.skip:focus { top: 12px; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--pad);
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(6, 8, 7, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { color: var(--mint); display: grid; place-items: center; }
.brand-text {
  font-size: 13px; font-weight: 600; letter-spacing: 0.22em;
  text-transform: uppercase; display: inline-flex; align-items: baseline; gap: 8px;
}
.brand-text em {
  font-style: normal; font-family: var(--serif); letter-spacing: 0.18em;
  color: var(--muted); font-size: 13px; font-weight: 400;
}
.nav-links { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 34px); }
.nav-links a {
  font-size: 13px; letter-spacing: 0.14em; color: var(--muted);
  transition: color 0.25s;
}
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  color: var(--ink) !important;
  border: 1px solid var(--line-strong);
  padding: 8px 16px; border-radius: 999px;
  transition: border-color 0.25s, background 0.25s;
}
.nav-cta:hover { border-color: var(--mint); background: rgba(143, 227, 184, 0.08); }
.menu-btn {
  display: none; width: 40px; height: 40px; border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.04); border-radius: 10px; cursor: pointer; padding: 0;
  position: relative;
}
.menu-btn span {
  position: absolute; left: 11px; right: 11px; height: 1.5px; background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.menu-btn span:first-child { top: 16px; }
.menu-btn span:last-child { top: 23px; }
.menu-btn[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
.mobile-menu[hidden] { display: none !important; }
.mobile-menu {
  position: fixed; inset: 72px 0 auto 0; z-index: 49;
  background: rgba(6, 8, 7, 0.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  padding: 18px var(--pad) 26px;
  display: flex; flex-direction: column; gap: 4px;
}
.mobile-menu a {
  padding: 14px 4px; font-size: 16px; color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.mobile-menu a:last-child { border-bottom: 0; }

/* ---------- hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  padding: 140px var(--pad) 100px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.orb {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5;
  animation: drift 18s ease-in-out infinite alternate;
}
.orb-a {
  width: 52vw; height: 52vw; max-width: 720px; max-height: 720px;
  right: -8vw; top: -10vw;
  background: radial-gradient(circle at 40% 40%, rgba(143, 227, 184, 0.5), transparent 62%);
}
.orb-b {
  width: 40vw; height: 40vw; max-width: 560px; max-height: 560px;
  left: -10vw; bottom: -14vw;
  background: radial-gradient(circle at 50% 50%, rgba(216, 195, 154, 0.28), transparent 64%);
  animation-delay: -6s;
}
@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-4%, 5%, 0) scale(1.08); }
}
.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 78%);
  opacity: 0.55;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(to bottom, transparent 60%, var(--bg) 98%);
}
.hero-inner { position: relative; z-index: 2; max-width: var(--max); width: 100%; margin: 0 auto; }
.eyebrow {
  margin: 0 0 26px; font-size: 11px; letter-spacing: 0.34em;
  text-transform: uppercase; color: var(--mint);
}
h1 {
  margin: 0; font-family: var(--serif); font-weight: 500;
  font-size: clamp(52px, 10.5vw, 138px); line-height: 1.02;
  letter-spacing: 0.02em;
}
.grad {
  background: linear-gradient(100deg, var(--mint), var(--sand) 60%, #e8f5ee);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede {
  margin: 30px 0 0; max-width: 34ch; color: var(--muted);
  font-size: clamp(15px, 1.6vw, 18px); line-height: 1.75;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 26px; border-radius: 999px; font-size: 14px;
  letter-spacing: 0.06em; border: 1px solid transparent;
  transition: transform 0.3s var(--ease), background 0.3s, border-color 0.3s, box-shadow 0.3s;
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(120deg, var(--mint), #b9edcf);
  color: #04120b; font-weight: 600;
  box-shadow: 0 10px 34px rgba(143, 227, 184, 0.16);
}
.btn-primary:hover { box-shadow: 0 14px 44px rgba(143, 227, 184, 0.26); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--mint); background: rgba(143, 227, 184, 0.06); }
.btn-lg { padding: 16px 34px; font-size: 15px; }
.hero-meta {
  list-style: none; display: flex; flex-wrap: wrap; gap: 10px 26px;
  margin: 54px 0 0; padding: 0; color: var(--faint);
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
}
.hero-meta li { position: relative; }
.hero-meta li + li::before {
  content: "·"; position: absolute; left: -15px; color: var(--line-strong);
}
.scroll-hint {
  position: absolute; left: 50%; bottom: 30px; transform: translateX(-50%);
  width: 22px; height: 34px; border: 1px solid var(--line-strong);
  border-radius: 12px; z-index: 2;
}
.scroll-hint span {
  position: absolute; left: 50%; top: 7px; width: 2px; height: 7px;
  background: var(--mint); border-radius: 2px; transform: translateX(-50%);
  animation: scroll 2s ease-in-out infinite;
}
@keyframes scroll {
  0% { opacity: 0; transform: translate(-50%, 0); }
  30% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, 12px); }
}

/* ---------- sections ---------- */
.section { max-width: var(--max); margin: 0 auto; padding: clamp(80px, 12vw, 150px) var(--pad); }
.section-head {
  display: grid; grid-template-columns: 70px 1fr; gap: 20px;
  align-items: start; margin-bottom: clamp(44px, 6vw, 72px);
}
.index {
  font-size: 12px; letter-spacing: 0.2em; color: var(--faint);
  padding-top: 10px; border-top: 1px solid var(--line-strong);
}
.section-head h2 {
  margin: 0 0 14px; font-family: var(--serif); font-weight: 500;
  font-size: clamp(30px, 4.6vw, 52px); line-height: 1.15; letter-spacing: 0.02em;
}
.section-head p { margin: 0; max-width: 46ch; color: var(--muted); font-size: 15px; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.card {
  background: var(--bg); padding: clamp(26px, 3.4vw, 40px);
  position: relative; transition: background 0.4s var(--ease);
}
.card:hover { background: var(--bg-2); }
.card-no { font-size: 11px; letter-spacing: 0.2em; color: var(--faint); }
.card h3 {
  margin: 34px 0 14px; font-size: 20px; font-weight: 500; letter-spacing: 0.04em;
}
.card h3 span { display: block; margin-top: 6px; font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--mint); font-weight: 400; }
.card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }

.cap-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.cap-list li {
  display: grid; grid-template-columns: 70px 1fr 40px; gap: 20px; align-items: center;
  padding: 30px 0; border-bottom: 1px solid var(--line);
  transition: padding 0.35s var(--ease), background 0.35s;
}
.cap-list li:hover { padding-left: 12px; background: linear-gradient(90deg, rgba(143, 227, 184, 0.05), transparent 60%); }
.cap-no { font-size: 12px; letter-spacing: 0.2em; color: var(--faint); }
.cap-main h3 { margin: 0 0 6px; font-size: clamp(18px, 2.2vw, 24px); font-weight: 500; letter-spacing: 0.03em; }
.cap-main h3 span { margin-left: 12px; font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--mint); font-weight: 400; }
.cap-main p { margin: 0; color: var(--muted); font-size: 14px; }
.cap-arrow { color: var(--faint); font-size: 18px; transition: color 0.3s, transform 0.3s var(--ease); justify-self: end; }
.cap-list li:hover .cap-arrow { color: var(--mint); transform: translate(3px, -3px); }

.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.statement {
  margin: 0; font-family: var(--serif); font-weight: 400;
  font-size: clamp(28px, 4.2vw, 46px); line-height: 1.35; letter-spacing: 0.02em;
}
.statement::after {
  content: ""; display: block; width: 64px; height: 1px;
  background: linear-gradient(90deg, var(--mint), transparent); margin-top: 28px;
}
.about-body p { margin: 0 0 18px; color: var(--muted); font-size: 15px; line-height: 1.85; }
.facts { margin: 34px 0 0; padding: 0; display: grid; gap: 0; }
.facts > div {
  display: grid; grid-template-columns: 84px 1fr; gap: 16px;
  padding: 14px 0; border-top: 1px solid var(--line);
}
.facts dt { color: var(--faint); font-size: 12px; letter-spacing: 0.14em; }
.facts dd { margin: 0; color: var(--ink); font-size: 14px; }

/* ---------- contact ---------- */
.contact {
  max-width: var(--max); margin: 0 auto;
  padding: 0 var(--pad) clamp(90px, 12vw, 150px);
}
.contact-inner {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: 26px;
  padding: clamp(44px, 7vw, 90px) clamp(28px, 6vw, 80px);
  background:
    radial-gradient(ellipse 80% 120% at 100% 0%, rgba(143, 227, 184, 0.13), transparent 55%),
    radial-gradient(ellipse 70% 100% at 0% 100%, rgba(216, 195, 154, 0.08), transparent 60%),
    var(--bg-2);
  text-align: center;
}
.contact-inner .eyebrow { margin-bottom: 22px; }
.contact h2 {
  margin: 0 auto; font-family: var(--serif); font-weight: 500;
  font-size: clamp(30px, 5vw, 56px); line-height: 1.2; letter-spacing: 0.02em;
}
.contact-sub { margin: 20px 0 36px; color: var(--muted); font-size: 15px; }
.contact-pending { color: var(--muted); border-color: var(--line); cursor: default; }
.contact-pending:hover { transform: none; border-color: var(--line); background: transparent; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 44px var(--pad) 34px; }
.footer-top {
  max-width: var(--max); margin: 0 auto 34px;
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 14px;
}
.footer-slogan { margin: 0; color: var(--muted); font-family: var(--serif); font-size: 15px; letter-spacing: 0.12em; }
.footer-bottom {
  max-width: var(--max); margin: 0 auto; padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  color: var(--faint); font-size: 12px; letter-spacing: 0.08em;
}
.footer-links { display: flex; gap: 22px; }
.footer-links a:hover { color: var(--ink); }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.hero .reveal:nth-child(1) { transition-delay: 0.05s; }
.hero .reveal:nth-child(2) { transition-delay: 0.15s; }
.hero .reveal:nth-child(3) { transition-delay: 0.25s; }
.hero .reveal:nth-child(4) { transition-delay: 0.35s; }
.hero .reveal:nth-child(5) { transition-delay: 0.45s; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .cards { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 44px 1fr; gap: 14px; }
  .cap-list li { grid-template-columns: 44px 1fr; gap: 14px; }
  .cap-arrow { display: none; }
  .hero { padding-top: 120px; min-height: 92svh; }
}
@media (max-width: 520px) {
  .brand-text { font-size: 11px; letter-spacing: 0.16em; }
  .brand-text em { font-size: 11px; }
  .hero-meta { flex-direction: column; align-items: flex-start; gap: 6px; font-size: 10px; }
  .hero-meta li + li::before { display: none; }
  .cap-main h3 span { display: block; margin: 6px 0 0; letter-spacing: 0.16em; }
  .btn { padding: 12px 22px; font-size: 13px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .orb, .scroll-hint span { animation: none; }
  .btn, .cap-list li, .card { transition: none; }
}