:root {
  --bg: #0d0e16;
  --bg-2: #161827;
  --card: #1b1d2e;
  --line: rgba(255, 255, 255, 0.09);
  --text: #f3f3f6;
  --dim: rgba(243, 243, 246, 0.64);
  --faint: rgba(243, 243, 246, 0.42);
  --amber: #ffc56b;
  --ok: #4ade80;
  --radius: 18px;
  --wrap: 1080px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 700px at 80% -10%, rgba(255, 197, 107, 0.10), transparent 60%),
              linear-gradient(180deg, var(--bg-2), var(--bg) 520px);
  background-color: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

/* nav */
.nav { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); font-weight: 600; }
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.brand small { color: var(--faint); font-weight: 400; margin-left: 4px; }
.nav nav { display: flex; gap: 22px; font-size: 15px; }
.nav nav a { color: var(--dim); }

/* hero */
.hero { text-align: center; padding: 56px 0 28px; }
.hero .icon { width: 112px; height: 112px; margin: 0 auto 26px; border-radius: 26px; box-shadow: 0 18px 50px rgba(0, 0, 0, 0.5); }
.hero h1 { font-size: clamp(34px, 6vw, 58px); line-height: 1.15; margin: 0 0 16px; letter-spacing: -0.5px; }
.hero h1 em { font-style: normal; color: var(--amber); }
.hero p.lead { color: var(--dim); font-size: clamp(17px, 2.3vw, 21px); max-width: 720px; margin: 0 auto 30px; }
.cta { display: inline-flex; align-items: center; gap: 10px; padding: 13px 26px; border-radius: 999px; background: var(--text); color: #111; font-weight: 600; }
.cta:hover { text-decoration: none; opacity: 0.92; }
.cta.soon { background: rgba(255, 255, 255, 0.10); color: var(--text); border: 1px solid var(--line); cursor: default; }
.req { color: var(--faint); font-size: 14px; margin-top: 14px; }
.shot { margin: 44px auto 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55); }

/* sections */
section { padding: 64px 0; }
section h2 { font-size: clamp(26px, 4vw, 36px); margin: 0 0 10px; text-align: center; }
section p.sub { color: var(--dim); text-align: center; max-width: 680px; margin: 0 auto 36px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--dim); font-size: 15.5px; }
.card .k { color: var(--amber); font-size: 13px; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 10px; }
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.gallery img { border-radius: 14px; border: 1px solid var(--line); }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0 auto; max-width: 760px; }
.steps li { counter-increment: s; position: relative; padding: 0 0 22px 52px; color: var(--dim); }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 34px; height: 34px; border-radius: 50%;
  background: rgba(255, 197, 107, 0.14); color: var(--amber); font-weight: 600; display: grid; place-items: center; }
.steps li b { color: var(--text); display: block; }
.langs { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.langs span { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); font-size: 15px; }

/* long-form pages */
.doc { max-width: 760px; margin: 0 auto; padding: 30px 0 70px; }
.doc h1 { font-size: clamp(30px, 5vw, 40px); margin: 10px 0 6px; }
.doc .meta { color: var(--faint); font-size: 14px; margin-bottom: 30px; }
.doc h2 { font-size: 22px; margin: 36px 0 10px; text-align: left; }
.doc p, .doc li { color: var(--dim); }
.doc strong { color: var(--text); }
.doc table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { color: var(--text); font-weight: 600; }
.doc td { color: var(--dim); }
.doc hr { border: 0; border-top: 1px solid var(--line); margin: 44px 0; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin: 10px 0; }
.faq summary { cursor: pointer; font-weight: 600; color: var(--text); }
.faq details p { margin: 10px 0 0; }
.contact { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; margin-top: 28px; }

footer { border-top: 1px solid var(--line); padding: 30px 0 50px; color: var(--faint); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--dim); }

@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .nav nav { gap: 14px; }
  section { padding: 46px 0; }
  .doc table, .doc thead, .doc tbody, .doc tr, .doc th, .doc td { font-size: 14px; }
}