:root{
  --bg:#07080d;
  --bg-2:#0b0d14;
  --bg-3:#0e1119;
  --line:rgba(255,255,255,.08);
  --text:#e8eaf2;
  --muted:#9aa1b4;
  --dim:#6b7385;
  --gold:#d8b26a;
  --cyan:#4ee0d0;
  --violet:#7b6cff;
  --radius:16px;
  --wrap:1180px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
::selection{background:rgba(216,178,106,.28)}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  backdrop-filter:blur(14px);
  background:rgba(7,8,13,.72);
  border-bottom:1px solid transparent;
  transition:background .3s,border-color .3s;
}
.nav.solid{background:rgba(7,8,13,.92);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{
  width:38px;height:38px;display:grid;place-items:center;
  border:1px solid rgba(216,178,106,.45);border-radius:10px;
  color:var(--gold);font-weight:700;font-size:14px;letter-spacing:.5px;
  background:linear-gradient(160deg,rgba(216,178,106,.14),rgba(123,108,255,.08));
}
.logo-text{font-size:16px;font-weight:600;letter-spacing:2px}
.nav-links{display:flex;gap:34px}
.nav-links a{font-size:14px;color:var(--muted);position:relative;transition:color .25s}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-6px;height:1px;width:0;
  background:var(--gold);transition:width .3s;
}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 26px;border-radius:999px;
  font-size:14px;letter-spacing:.5px;transition:.28s;cursor:pointer;
  border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(120deg,var(--gold),#f0d9a6);
  color:#14100a;font-weight:600;
  box-shadow:0 10px 30px -12px rgba(216,178,106,.65);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px -12px rgba(216,178,106,.8)}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:rgba(216,178,106,.5);color:var(--gold)}
.nav-mail{height:38px;padding:0 18px;font-size:13px}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:120px 0 90px;overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.glow-a{width:520px;height:520px;top:-140px;right:-80px;background:radial-gradient(circle,rgba(123,108,255,.55),transparent 70%)}
.glow-b{width:480px;height:480px;bottom:-180px;left:-120px;background:radial-gradient(circle,rgba(78,224,208,.32),transparent 70%)}
.grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 40%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 0%,transparent 72%);
}
.hero-inner{position:relative;z-index:2}
.eyebrow{
  font-size:12px;letter-spacing:4px;color:var(--gold);
  text-transform:uppercase;margin-bottom:26px;
}
.hero h1{
  font-size:clamp(34px,5.4vw,64px);line-height:1.2;font-weight:700;letter-spacing:1px;
}
.hl{
  background:linear-gradient(120deg,var(--gold),#f6e6c0 60%,var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{
  margin-top:26px;max-width:640px;color:var(--muted);font-size:16px;
}
.hero-actions{display:flex;gap:16px;margin-top:40px;flex-wrap:wrap}
.hero-tags{display:flex;gap:12px;flex-wrap:wrap;margin-top:44px}
.hero-tags li{
  font-size:13px;color:var(--muted);
  padding:7px 16px;border:1px solid var(--line);border-radius:999px;
  background:rgba(255,255,255,.02);
}
.scroll-tip{
  position:absolute;bottom:34px;left:50%;transform:translateX(-50%);
  font-size:11px;letter-spacing:3px;color:var(--dim);z-index:2;
}
.scroll-tip::after{
  content:"";display:block;width:1px;height:34px;margin:10px auto 0;
  background:linear-gradient(var(--dim),transparent);
}

/* ---------- sections ---------- */
.section{padding:120px 0;position:relative}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:680px;margin-bottom:60px}
.sec-idx{
  display:inline-block;font-size:12px;letter-spacing:3px;color:var(--gold);
  border-left:2px solid var(--gold);padding-left:10px;margin-bottom:16px;
}
.sec-head h2{font-size:clamp(26px,3.4vw,40px);font-weight:700;letter-spacing:1px}
.sec-head p{margin-top:16px;color:var(--muted);font-size:15px}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  position:relative;padding:34px 30px 32px;border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  border:1px solid var(--line);
  transition:transform .35s,border-color .35s,background .35s;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .35s;
  background:radial-gradient(600px circle at 50% 0%,rgba(216,178,106,.12),transparent 60%);
}
.card:hover{transform:translateY(-6px);border-color:rgba(216,178,106,.35)}
.card:hover::before{opacity:1}
.card-icon{
  font-size:13px;letter-spacing:2px;color:var(--gold);margin-bottom:18px;
}
.card h3{font-size:19px;font-weight:600;margin-bottom:12px}
.card p{font-size:14.5px;color:var(--muted)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  padding-top:28px;border-top:1px solid var(--line);position:relative;
}
.step::before{
  content:"";position:absolute;top:-1px;left:0;width:38px;height:2px;background:var(--gold);
}
.step-no{font-size:11px;letter-spacing:2px;color:var(--dim)}
.step h3{font-size:18px;margin:12px 0 10px;font-weight:600}
.step p{font-size:14.5px;color:var(--muted)}

.notice{
  margin-top:64px;display:flex;gap:20px;align-items:flex-start;
  padding:26px 28px;border-radius:var(--radius);
  border:1px solid rgba(216,178,106,.22);
  background:linear-gradient(120deg,rgba(216,178,106,.07),rgba(123,108,255,.05));
}
.notice-tag{
  flex:0 0 auto;font-size:12px;color:var(--gold);letter-spacing:1px;
  border:1px solid rgba(216,178,106,.3);border-radius:999px;padding:4px 14px;margin-top:4px;
}
.notice p{font-size:14.5px;color:var(--muted)}
.notice strong{color:var(--text);font-weight:600}

/* ---------- about ---------- */
.about-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:center}
.about-text h2{font-size:clamp(26px,3.4vw,40px);font-weight:700}
.about-text p{margin-top:22px;color:var(--muted);font-size:15.5px}
.about-text strong{color:var(--text)}
.facts{display:flex;gap:36px;margin-top:36px;flex-wrap:wrap}
.facts li{display:flex;flex-direction:column}
.facts strong{font-size:20px;color:var(--gold);font-weight:600}
.facts span{font-size:13px;color:var(--dim)}

.about-visual{position:relative;height:320px;display:grid;place-items:center}
.vcard{
  width:220px;height:290px;border-radius:20px;display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(123,108,255,.28),rgba(78,224,208,.12) 55%,rgba(216,178,106,.14));
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 40px 80px -40px rgba(0,0,0,.9);
  position:relative;
}
.vcard span{font-size:34px;letter-spacing:4px;color:rgba(255,255,255,.9);font-weight:700}
.vcard i{
  position:absolute;inset:14px;border-radius:14px;border:1px dashed rgba(255,255,255,.16);
}
.vring{
  position:absolute;width:300px;height:300px;border-radius:50%;
  border:1px solid rgba(216,178,106,.18);
}
.vring::after{
  content:"";position:absolute;inset:40px;border-radius:50%;
  border:1px solid rgba(78,224,208,.14);
}

/* ---------- contact ---------- */
.section-contact{
  background:radial-gradient(900px circle at 50% 0%,rgba(123,108,255,.16),transparent 62%),var(--bg-3);
  border-top:1px solid var(--line);
  text-align:center;
}
.section-contact .sec-idx{border-left:none;padding-left:0}
.section-contact p{margin-top:14px;color:var(--muted);max-width:560px;margin-left:auto;margin-right:auto}
.mail-big{
  display:inline-block;margin-top:44px;
  font-size:clamp(24px,4.2vw,46px);font-weight:700;letter-spacing:1px;
  background:linear-gradient(120deg,var(--gold),#f7e8c6 55%,var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:10px;
  transition:border-color .3s,transform .3s;
}
.mail-big:hover{border-color:var(--gold);transform:translateY(-2px)}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);padding:56px 0 40px;background:var(--bg)}
.footer-inner{display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-desc{font-size:13.5px;color:var(--dim);max-width:620px}
.footer-meta{display:flex;gap:24px;flex-wrap:wrap;justify-content:center;font-size:13px;color:var(--muted);margin-top:6px}
.footer-meta a{color:var(--gold)}
.footer-meta a:hover{text-decoration:underline}
.icp{color:var(--dim)}
.copyright{font-size:12.5px;color:#565d6e;margin-top:8px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:36px 20px}
  .about-inner{grid-template-columns:1fr;gap:40px}
  .about-visual{height:260px;order:-1}
}
@media (max-width:760px){
  .nav-links{display:none}
  .nav-mail{font-size:12px;padding:0 14px}
  .section{padding:84px 0}
  .cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .notice{flex-direction:column;gap:12px}
  .hero{min-height:auto;padding:110px 0 70px}
  .scroll-tip{display:none}
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}