/* ============================================================
   OKIT Cloud 官网 — "Command Luxe"（借鉴 okit 桌面端落地页的设计语言）
   黑色画布 + 奶油纸白 + 青柠高亮；Fraunces 衬线大标题 + Space Grotesk。
   ============================================================ */

.lx {
  --canvas: #0b0b09;
  --cream: #f4f1e8;
  --cream-60: rgba(244, 241, 232, 0.62);
  --cream-38: rgba(244, 241, 232, 0.38);
  --hairline: rgba(244, 241, 232, 0.14);
  --lime: #c6ff3e;
  --lime-deep: #a4d92b;
  --serif: "Fraunces", "Songti SC", "Noto Serif SC", Georgia, serif;
  --sans: "Space Grotesk", "PingFang SC", "Microsoft YaHei", sans-serif;

  margin: 0;
  min-height: 100vh;
  background: var(--canvas);
  color: var(--cream);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* film grain */
.lx::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

.lx > * { position: relative; z-index: 2; }
main { display: block; }
.lx a { color: inherit; }
.lx ::selection { background: var(--lime); color: var(--canvas); }

/* ---------- Nav ---------- */
.lx-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding: 18px 0;
  border-bottom: 1px solid var(--hairline);
  backdrop-filter: blur(12px);
  background: rgba(11, 11, 9, 0.72);
}
.lx-wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 0.14em;
  text-decoration: none;
}
.lx-logo {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  border: 1px solid var(--hairline);
  object-fit: cover;
  flex: none;
}
.lx-nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
}
.lx-nav-links a { text-decoration: none; color: var(--cream-60); transition: color 0.2s; }
.lx-nav-links a:hover { color: var(--cream); }
.lx-nav-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
}
.lx-nav-cta {
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--canvas) !important;
  font-weight: 600;
}
.lx-nav-cta:hover { background: var(--lime-deep); }

/* ---------- Hero ---------- */
.lx-hero {
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding: 110px 0 72px;
  text-align: center;
}
.lx-eyebrow {
  margin: 0 0 18px;
  font-size: 13px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--lime);
}
.lx-hero-title {
  margin: 0 0 26px;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(44px, 8vw, 96px);
  line-height: 1.06;
  letter-spacing: 0.01em;
}
.lx-hero-title .split .ch { display: inline-block; opacity: 0; transform: translateY(18px); animation: chIn 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards; }
@keyframes chIn { to { opacity: 1; transform: none; } }
.lx-hero-sub {
  margin: 0 auto 36px;
  max-width: 640px;
  color: var(--cream-60);
  font-size: 17px;
}
.lx-hero-cta { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

/* buttons */
.lx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
}
.lx-btn:active { transform: translateY(1px); }
.lx-btn-lime { background: var(--lime); color: var(--canvas); }
.lx-btn-lime:hover { background: var(--lime-deep); }
.lx-btn-ghost { border-color: var(--hairline); color: var(--cream); background: transparent; }
.lx-btn-ghost:hover { border-color: var(--cream-38); }
.lx-btn-outline { border-color: var(--lime); color: var(--lime); background: transparent; }
.lx-btn-outline:hover { background: rgba(198, 255, 62, 0.08); }

/* metric ledger */
.lx-ledger {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 72px auto 0;
  max-width: 860px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  overflow: hidden;
}
.lx-ledger-item {
  background: var(--canvas);
  padding: 26px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.lx-ledger-item .num {
  font-family: var(--serif);
  font-size: 40px;
  line-height: 1;
  color: var(--lime);
}
.lx-ledger-item .lab { font-size: 13px; color: var(--cream-38); letter-spacing: 0.08em; }

/* ---------- Marquee ---------- */
.lx-marquee {
  border-block: 1px solid var(--hairline);
  padding: 20px 0;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.lx-marquee-track {
  display: flex;
  align-items: center;
  gap: 28px;
  width: max-content;
  animation: marquee 36s linear infinite;
  color: var(--cream-38);
  font-size: 15px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.lx-marquee-track i { font-style: normal; color: var(--lime); opacity: 0.6; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.lx-section {
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding: 96px 0;
}
.lx-section-title {
  margin: 0 0 48px;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.15;
}

/* capability cards + spotlight */
.lx-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.lx-card {
  --mx: 50%;
  --my: 50%;
  position: relative;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 30px 28px;
  background: rgba(244, 241, 232, 0.02);
  overflow: hidden;
  transition: border-color 0.25s;
}
.lx-card:hover { border-color: rgba(244, 241, 232, 0.3); }
.lx-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(320px circle at var(--mx) var(--my), rgba(198, 255, 62, 0.09), transparent 65%);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}
.lx-card:hover::after { opacity: 1; }
.lx-card h3 { margin: 0 0 12px; font-size: 19px; font-weight: 600; letter-spacing: 0.02em; }
.lx-card p { margin: 0; color: var(--cream-60); font-size: 15px; }

/* ---------- Pricing ---------- */
.lx-pricing {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 18px;
  align-items: start;
}
.lx-price-card {
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 36px 32px;
  background: rgba(244, 241, 232, 0.02);
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.lx-price-card header { display: flex; flex-direction: column; gap: 8px; }
.lx-price-card h3 { margin: 0; font-size: 22px; letter-spacing: 0.06em; }
.lx-price-tag { margin: 0; font-family: var(--serif); font-size: 46px; line-height: 1; color: var(--cream); }
.lx-price-tag span { font-size: 16px; font-family: var(--sans); color: var(--cream-38); }
.lx-price-alt { margin: 0; font-size: 14px; color: var(--cream-60); }
.lx-price-card ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 12px; font-size: 15px; color: var(--cream-60); }
.lx-price-card ul li { padding-left: 24px; position: relative; }
.lx-price-card ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--lime);
  font-size: 13px;
}
.lx-price-card .lx-btn { margin-top: auto; }
.lx-price-pro {
  border-color: rgba(198, 255, 62, 0.4);
  background: linear-gradient(180deg, rgba(198, 255, 62, 0.06), rgba(198, 255, 62, 0.015));
}
.lx-price-badge {
  margin: 0;
  align-self: flex-start;
  padding: 4px 12px;
  border: 1px solid var(--lime);
  border-radius: 999px;
  color: var(--lime);
  font-size: 12px;
  letter-spacing: 0.22em;
}
.lx-price-pro .lx-price-tag { color: var(--lime); }
.lx-price-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: auto; }
.lx-price-cta .lx-btn { flex: 1; }
.lx-price-note { margin: 0; font-size: 12.5px; color: var(--cream-38); }
.lx-price-note a, .lx-faq p a { color: var(--cream-60); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--lime); }
.lx-price-note a:hover, .lx-faq p a:hover { color: var(--cream); }

/* ---------- FAQ ---------- */
.lx-faq { display: flex; flex-direction: column; border-top: 1px solid var(--hairline); }
.lx-faq details { border-bottom: 1px solid var(--hairline); }
.lx-faq summary {
  cursor: pointer;
  list-style: none;
  padding: 24px 4px;
  font-size: 17px;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.lx-faq summary::-webkit-details-marker { display: none; }
.lx-faq summary::after { content: "+"; font-family: var(--serif); font-size: 22px; color: var(--lime); transition: transform 0.2s; }
.lx-faq details[open] summary::after { transform: rotate(45deg); }
.lx-faq details p { margin: 0; padding: 0 4px 26px; max-width: 720px; color: var(--cream-60); font-size: 15px; }

/* ---------- Footer ---------- */
.lx-footer { border-top: 1px solid var(--hairline); margin-top: 40px; }
.lx-footer-inner {
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
  padding: 40px 0 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.lx-footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: 0.14em; }
.lx-footer-links { display: flex; gap: 22px; font-size: 14px; }
.lx-footer-links a { text-decoration: none; color: var(--cream-60); }
.lx-footer-links a:hover { color: var(--cream); }
.lx-footer-fine { margin: 0; font-size: 13px; color: var(--cream-38); }

/* ---------- Toast ---------- */
.lx-toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translate(-50%, 16px);
  z-index: 50;
  padding: 12px 22px;
  border: 1px solid var(--lime);
  border-radius: 999px;
  background: rgba(11, 11, 9, 0.92);
  color: var(--lime);
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
}
.lx-toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .lx-marquee-track { animation: none; }
  .lx-hero-title .split .ch { animation: none; opacity: 1; transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .lx-grid { grid-template-columns: 1fr 1fr; }
  .lx-pricing { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .lx-nav { width: calc(100% - 32px); }
  .lx-nav-links a:not(.lx-nav-cta):not(.lx-nav-ghost) { display: none; }
  .lx-hero { padding-top: 72px; }
  .lx-ledger { grid-template-columns: 1fr 1fr; }
  .lx-grid { grid-template-columns: 1fr; }
  .lx-section { padding: 64px 0; }
}