:root{
  --bg:#0a0e1a; --bg2:#0f1629; --card:rgba(255,255,255,.04); --card-br:rgba(255,255,255,.09);
  --txt:#e2e8f0; --mut:#94a3b8; --cy:#22d3ee; --vi:#7c3aed; --grad:linear-gradient(120deg,#22d3ee,#7c3aed);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:Inter,'Segoe UI',system-ui,Arial,sans-serif;background:var(--bg);color:var(--txt);
  line-height:1.6;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
b{color:#f8fafc}
code{background:rgba(124,58,237,.18);color:#c4b5fd;padding:.05em .4em;border-radius:5px;font-size:.88em}

/* nav */
.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:14px 6vw;background:rgba(10,14,26,.78);backdrop-filter:blur(14px);border-bottom:1px solid var(--card-br)}
.nav-links{display:flex;gap:30px;font-size:.95rem;font-weight:500}
.nav-links a{color:var(--mut);transition:color .2s}
.nav-links a:hover{color:var(--cy)}
@media(max-width:680px){.nav-links{display:none}}

/* hero */
.hero{position:relative;padding:9vh 6vw 8vh;overflow:hidden;
  background:radial-gradient(1100px 520px at 78% -8%,rgba(124,58,237,.30),transparent 60%),
             radial-gradient(900px 480px at 8% 12%,rgba(34,211,238,.18),transparent 55%),var(--bg)}
.hero-inner{max-width:960px}
.badge{display:inline-block;font-size:.8rem;font-weight:600;color:var(--cy);
  background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);padding:6px 14px;border-radius:999px;margin-bottom:26px}
.hero h1{font-size:clamp(2.2rem,5.5vw,4rem);font-weight:800;line-height:1.08;letter-spacing:-1.5px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{margin:24px 0 34px;font-size:1.15rem;color:var(--mut);max-width:680px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 26px;border-radius:12px;font-weight:600;font-size:1rem;transition:transform .15s,box-shadow .2s}
.btn-primary{background:var(--grad);color:#06121a;box-shadow:0 8px 30px rgba(34,211,238,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(124,58,237,.4)}
.btn-ghost{border:1px solid var(--card-br);color:var(--txt)}
.btn-ghost:hover{border-color:var(--cy);color:var(--cy)}
.hero-stats{display:flex;gap:46px;margin-top:54px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats b{font-size:2.1rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats span{color:var(--mut);font-size:.9rem}

/* sections */
.section{padding:8vh 6vw}
.section.alt{background:linear-gradient(180deg,var(--bg),var(--bg2))}
.section h2{font-size:clamp(1.7rem,3.5vw,2.5rem);font-weight:800;letter-spacing:-.5px}
.section-sub{color:var(--mut);margin:12px 0 40px;max-width:640px}

/* service grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}
.card{background:var(--card);border:1px solid var(--card-br);border-radius:18px;padding:26px;
  transition:transform .18s,border-color .2s,background .2s;position:relative}
.svc:hover{transform:translateY(-4px);border-color:var(--cy);background:rgba(255,255,255,.06)}
.svc-ico{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;font-size:1.7rem;
  background:color-mix(in srgb,var(--c) 18%,transparent);border:1px solid color-mix(in srgb,var(--c) 40%,transparent);margin-bottom:18px}
.card h3{font-size:1.25rem;font-weight:700;display:flex;align-items:center;gap:8px}
.arrow{color:var(--mut);font-size:1rem;transition:transform .2s,color .2s}
.svc:hover .arrow{color:var(--cy);transform:translate(3px,-3px)}
.card p{color:var(--mut);font-size:.95rem;margin:10px 0 16px}
.tag{font-family:ui-monospace,monospace;font-size:.78rem;color:var(--cy);background:rgba(34,211,238,.08);padding:4px 10px;border-radius:7px}
.soon{opacity:.62}
.soon .tag{color:var(--mut);background:rgba(148,163,184,.1)}

/* days */
.days{display:grid;grid-template-columns:repeat(auto-fit,minmax(310px,1fr));gap:22px}
.day{background:var(--card);border:1px solid var(--card-br);border-radius:18px;padding:26px;overflow:hidden}
.day header{display:flex;align-items:center;gap:14px;margin-bottom:18px;padding-bottom:16px;border-bottom:1px solid var(--card-br)}
.daynum{flex:none;width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-weight:800;font-size:1.1rem;background:var(--grad);color:#06121a}
.day h3{font-size:1.12rem;font-weight:700;line-height:1.25}
.day ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.day li{font-size:.92rem;color:var(--mut);padding-left:20px;position:relative}
.day li::before{content:"▸";position:absolute;left:0;color:var(--vi)}
.day li.lab{color:var(--txt)}
.day li.lab::before{content:"★";color:var(--cy)}

/* timeline */
.timeline{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.tl{display:flex;gap:16px;align-items:baseline;background:var(--card);border:1px solid var(--card-br);border-radius:12px;padding:16px 20px}
.tl span{font-family:ui-monospace,monospace;font-weight:700;color:var(--cy);flex:none}
.tl p{color:var(--mut);font-size:.92rem}

/* courses */
.course{display:flex;flex-direction:column;gap:6px}
.cnum{font-size:.85rem;font-weight:800;color:var(--vi);letter-spacing:1px}
.course h3{font-size:1.1rem}
.course p{color:var(--mut);font-size:.85rem;margin:0}

/* footer */
.footer{padding:50px 6vw;border-top:1px solid var(--card-br);display:flex;align-items:center;gap:20px;flex-wrap:wrap;background:var(--bg2)}
.footer p{color:var(--mut);font-size:.9rem}

/* planning days */
.plan-day{margin-bottom:30px;background:var(--card);border:1px solid var(--card-br);border-radius:18px;padding:24px;overflow:hidden}
.plan-head{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.plan-head h3{font-size:1.15rem;font-weight:700}
.plan-head em{color:var(--mut);font-style:normal;font-size:.9rem}
.tl.break{opacity:.6}
.tl.break span{color:var(--mut)}
.tl.lab{border-color:rgba(34,211,238,.35);background:rgba(34,211,238,.06)}
.tl.lab span{color:var(--cy)}

/* Q&A */
.qa-form{max-width:680px;margin-bottom:26px}
.qa-form textarea{width:100%;padding:14px;border-radius:12px;border:1px solid var(--card-br);background:rgba(255,255,255,.04);color:var(--txt);font-family:inherit;font-size:.96rem;resize:vertical;margin-bottom:12px}
.qa-form textarea:focus{outline:none;border-color:var(--cy)}
.qa-list{display:flex;flex-direction:column;gap:16px;max-width:760px}
.qa-item{background:var(--card);border:1px solid var(--card-br);border-radius:14px;padding:18px}
.qa-q,.qa-a{display:flex;gap:12px;align-items:flex-start}
.qa-a{margin-top:12px;padding-top:12px;border-top:1px solid var(--card-br)}
.qa-badge{flex:none;min-width:34px;height:26px;padding:0 8px;border-radius:7px;display:grid;place-items:center;font-weight:800;font-size:.75rem;background:rgba(124,58,237,.2);color:#c4b5fd}
.qa-badge.a{background:rgba(34,211,238,.18);color:var(--cy)}
.qa-q p,.qa-a p{font-size:.95rem}
.qa-time{color:var(--mut);font-size:.76rem}
.qa-pending{margin-top:10px;color:#fbbf24;font-size:.85rem}
.qa-reply{display:flex;gap:10px;margin-top:12px}
.qa-reply input{flex:1;padding:11px 14px;border-radius:10px;border:1px solid var(--card-br);background:rgba(255,255,255,.04);color:var(--txt);font-family:inherit}
.qa-reply input:focus{outline:none;border-color:var(--cy)}
.qa-reply .btn{padding:11px 18px}