:root{
    --bg:#11110f;
    --bg-2:#16140f;
    --panel:rgba(255,255,255,.035);
    --panel-strong:rgba(255,255,255,.06);
    --line:rgba(201,164,76,.16);
    --line-soft:rgba(255,255,255,.08);
    --gold:#c9a44c;
    --gold-soft:#d8c27a;
    --warm:#ff9a6a;
    --warm-2:#ffbd8a;
    --peach:#fff4ea;
    --blue:#9db4ff;
    --blue-2:#b4c8ff;
    --green:#36a766;
    --green-2:#7ee0ae;
    --ink:#f7f7f6;
    --ink-dim:rgba(247,247,246,.62);
    --ink-faint:rgba(247,247,246,.4);
    --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
    --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    background:var(--bg);
    color:var(--ink);
    font-family:var(--serif);
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  a{color:inherit;text-decoration:none}
  .wrap{max-width:1080px;margin:0 auto;padding:0 24px}

  /* ---------- top nav ---------- */
  .site-header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
    background:linear-gradient(180deg,rgba(17,17,15,.92),rgba(17,17,15,.5));
    border-bottom:1px solid var(--line-soft);}
  .top-nav{display:flex;align-items:center;justify-content:space-between;height:64px}
  .brand{font-weight:600;font-size:21px;letter-spacing:.2em;display:flex;align-items:center;gap:11px}
  .brand .seal{width:28px;height:28px;border-radius:7px;display:grid;place-items:center;
    background:linear-gradient(135deg,var(--gold),var(--warm));color:#1a160f;font-weight:700;font-size:15px;
    box-shadow:0 0 18px rgba(201,164,76,.45)}
  .brand .ver{font-family:var(--sans);font-size:11px;font-weight:400;letter-spacing:.05em;color:var(--ink-faint);
    border:1px solid var(--line-soft);border-radius:20px;padding:2px 9px;line-height:1.4;align-self:center}
  .nav-links{display:flex;gap:30px;font-family:var(--sans);font-size:14.5px;color:var(--ink-dim)}
  .nav-links a{position:relative;transition:color .25s}
  .nav-links a:hover{color:var(--ink)}
  .nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;height:1px;width:0;
    background:linear-gradient(90deg,var(--gold),transparent);transition:width .3s}
  .nav-links a:hover::after{width:100%}
  @media(max-width:720px){.nav-links{display:none}}

  /* ---------- hero ---------- */
  .intro{position:relative;overflow:hidden;padding:120px 0 130px}
  #starmap{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.9}
  .intro::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
    background:radial-gradient(120% 80% at 50% 0%,rgba(17,17,15,0) 40%,rgba(17,17,15,.85) 100%)}
  .intro .wrap{position:relative;z-index:2;text-align:center}
  .eyebrow{font-family:var(--sans);font-size:13px;letter-spacing:.5em;color:var(--gold-soft);
    text-transform:uppercase;opacity:.8;margin-bottom:26px}
  .hero-title{font-size:clamp(34px,6vw,62px);font-weight:500;line-height:1.25;letter-spacing:.04em;
    text-shadow:0 2px 40px rgba(0,0,0,.5)}
  .hero-title em{font-style:normal;background:linear-gradient(100deg,var(--warm-2),var(--gold-soft));
    -webkit-background-clip:text;background-clip:text;color:transparent}
  .hero-sub{margin:30px auto 0;max-width:620px;color:var(--ink-dim);font-size:clamp(15px,2vw,17px)}
  .cta{display:inline-flex;align-items:center;gap:10px;margin-top:42px;padding:14px 34px;
    border-radius:40px;font-family:var(--sans);font-size:15px;letter-spacing:.08em;color:#1a160f;
    background:linear-gradient(120deg,var(--gold),var(--warm));font-weight:600;
    box-shadow:0 10px 40px rgba(255,154,106,.25);transition:transform .25s,box-shadow .25s}
  .cta:hover{transform:translateY(-2px);box-shadow:0 16px 50px rgba(255,154,106,.4)}
  .scroll-hint{margin-top:64px;font-family:var(--sans);font-size:12px;letter-spacing:.3em;color:var(--ink-faint)}

  /* ---------- section heading ---------- */
  .sec{padding:84px 0}
  .sec-head{text-align:center;margin-bottom:54px}
  .sec-head .kicker{font-family:var(--sans);font-size:12.5px;letter-spacing:.4em;color:var(--gold-soft);opacity:.75}
  .sec-head h2{font-size:clamp(26px,4vw,38px);font-weight:600;margin-top:14px;letter-spacing:.05em}
  .sec-head p{margin:16px auto 0;max-width:560px;color:var(--ink-dim);font-size:15.5px}

  /* ---------- entrance cards ---------- */
  .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  @media(max-width:860px){.cards{grid-template-columns:1fr}}
  .card{position:relative;padding:34px 28px 30px;border-radius:18px;
    background:var(--panel);border:1px solid var(--line-soft);overflow:hidden;
    transition:transform .3s,border-color .3s,background .3s}
  .card::after{content:"";position:absolute;right:-40px;top:-40px;width:140px;height:140px;border-radius:50%;
    filter:blur(44px);opacity:.5;transition:opacity .3s}
  .card.kanyu::after{background:radial-gradient(circle,var(--blue),transparent 70%)}
  .card.xunqi::after{background:radial-gradient(circle,var(--green-2),transparent 70%)}
  .card.mingshu::after{background:radial-gradient(circle,var(--warm),transparent 70%)}
  .card:hover{transform:translateY(-6px);border-color:var(--line);background:var(--panel-strong)}
  .card:hover::after{opacity:.85}
  .card .glyph{font-size:30px;margin-bottom:18px;display:block}
  .card h3{font-size:23px;font-weight:600;letter-spacing:.1em}
  .card .tag{display:inline-block;margin-top:10px;font-family:var(--sans);font-size:11.5px;letter-spacing:.16em;
    color:var(--green-2);border:1px solid rgba(126,224,174,.3);border-radius:20px;padding:3px 12px}
  .card p{margin-top:16px;color:var(--ink-dim);font-size:14.5px;min-height:78px}
  .card .go{margin-top:18px;font-family:var(--sans);font-size:13.5px;color:var(--gold-soft);
    display:flex;align-items:center;gap:7px;transition:gap .25s}
  .card:hover .go{gap:13px}

  /* ---------- catalog / star map ---------- */
  .catalog{background:linear-gradient(180deg,rgba(255,255,255,.015),transparent)}
  .groups{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  @media(max-width:860px){.groups{grid-template-columns:1fr}}
  .group{border:1px solid var(--line-soft);border-radius:16px;padding:26px 22px;background:var(--panel)}
  .group h3{font-family:var(--sans);font-size:13px;letter-spacing:.32em;color:var(--gold-soft);
    display:flex;align-items:baseline;gap:12px;margin-bottom:20px}
  .group h3 .cn{font-family:var(--serif);font-size:19px;letter-spacing:.14em;color:var(--ink)}
  .tool{display:flex;align-items:center;justify-content:space-between;padding:13px 0;
    border-top:1px solid var(--line-soft);font-size:15.5px}
  .tool:first-of-type{border-top:none}
  .tool a{transition:color .2s}
  .tool a:hover{color:var(--gold-soft)}
  .badge{font-family:var(--sans);font-size:11px;letter-spacing:.12em;padding:3px 10px;border-radius:20px;white-space:nowrap}
  .badge.open{color:var(--green-2);border:1px solid rgba(126,224,174,.3)}
  .badge.dev{color:var(--ink-faint);border:1px solid var(--line-soft)}

  /* ---------- community ---------- */
  .community{text-align:center}
  .community .qr-btn{display:inline-flex;align-items:center;gap:9px;margin-top:30px;cursor:pointer;
    font-family:var(--sans);font-size:14px;color:var(--gold-soft);border:1px solid var(--line);
    padding:11px 26px;border-radius:32px;background:var(--panel);transition:background .25s}
  .community .qr-btn:hover{background:var(--panel-strong)}
  .modal{position:fixed;inset:0;z-index:100;display:none;place-items:center;
    background:rgba(8,8,7,.78);backdrop-filter:blur(6px)}
  .modal.show{display:grid}
  .modal .box{background:var(--bg-2);border:1px solid var(--line);border-radius:18px;padding:28px;text-align:center;max-width:320px}
  .modal .qr{width:200px;height:200px;border-radius:12px;margin:0 auto 14px;
    background:
      repeating-linear-gradient(0deg,#11110f 0 10px,#f7f7f6 10px 20px),
      repeating-linear-gradient(90deg,#11110f 0 10px,#f7f7f6 10px 20px);
    background-blend-mode:difference;opacity:.92}
  .modal .box p{font-family:var(--sans);font-size:13px;color:var(--ink-dim);margin-bottom:18px}
  .modal .close{font-family:var(--sans);font-size:13px;color:var(--ink);border:1px solid var(--line-soft);
    padding:8px 22px;border-radius:24px;cursor:pointer;background:transparent}

  /* ---------- footer ---------- */
  .site-footer{border-top:1px solid var(--line-soft);padding:40px 0 56px;color:var(--ink-faint);
    font-family:var(--sans);font-size:13px}
  .site-footer .wrap{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center}
  .site-footer .flinks{display:flex;gap:22px;flex-wrap:wrap}
  .site-footer a:hover{color:var(--gold-soft)}
  .disclaimer{font-size:11.5px;opacity:.6;max-width:560px;margin-top:14px;line-height:1.6}