/* ===== Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0e1a;--bg2:#0f1424;--panel:#121829;--panel2:#161d33;
  --line:#22304a;--text:#e6ebf5;--muted:#8a93ad;--muted2:#5d6783;
  --brand:#4ade80;--brand2:#22d3ee;--accent:#a78bfa;
  --grad:linear-gradient(120deg,#22d3ee 0%,#4ade80 50%,#a78bfa 100%);
  --grad2:linear-gradient(120deg,#4ade80,#22d3ee);
  --shadow:0 20px 60px -20px rgba(0,0,0,.6);--shadow-sm:0 8px 30px -12px rgba(0,0,0,.5);
  --radius:14px;
  --maxw:1140px;
}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
::selection{background:rgba(34,211,238,.3);color:#fff}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;font-weight:600;font-size:15px;padding:11px 20px;cursor:pointer;border:1px solid transparent;transition:.2s;white-space:nowrap}
.btn-sm{padding:8px 16px;font-size:14px}
.btn-lg{padding:14px 26px;font-size:16px}
.btn-block{display:flex;width:100%}
.btn-primary{background:var(--grad2);color:#061018;border-color:transparent;box-shadow:0 8px 24px -10px rgba(74,222,128,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px -10px rgba(74,222,128,.7)}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--text);border-color:var(--line)}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:var(--muted2)}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(16px);background:rgba(10,14,26,.72);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;height:64px;gap:28px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:19px;letter-spacing:-.5px}
.brand-mark{font-size:24px}
.brand-dot{color:var(--brand)}
.brand-sub{font-size:12px;color:var(--muted);font-weight:500;border-left:1px solid var(--line);padding-left:8px;margin-left:4px}
.nav-links{display:flex;gap:24px;margin-left:auto;font-size:14px;color:var(--muted)}
.nav-links a{transition:.2s}
.nav-links a:hover{color:var(--text)}
.nav-cta{display:flex;gap:10px;margin-left:auto}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;margin-left:auto}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ===== */
.hero{position:relative;padding:80px 0 90px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;background:
  radial-gradient(800px 500px at 80% -10%,rgba(34,211,238,.18),transparent 60%),
  radial-gradient(700px 500px at 10% 20%,rgba(74,222,128,.14),transparent 60%),
  radial-gradient(600px 400px at 50% 110%,rgba(167,139,250,.12),transparent 60%)}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);background:rgba(255,255,255,.04);border:1px solid var(--line);padding:6px 14px;border-radius:99px;margin-bottom:22px}
.dot-live{width:7px;height:7px;border-radius:99px;background:var(--brand);box-shadow:0 0 0 4px rgba(74,222,128,.18);animation:pulse 2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 7px rgba(74,222,128,0)}}
.hero-title{font-size:54px;line-height:1.15;font-weight:800;letter-spacing:-1px;margin-bottom:22px}
.hero-sub{font-size:18px;color:var(--muted);max-width:560px;margin-bottom:32px}
.hero-sub b{color:var(--text);font-weight:600}
.hero-cta{display:flex;gap:14px;margin-bottom:48px;flex-wrap:wrap}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;border-top:1px solid var(--line);padding-top:28px}
.stat b{font-size:28px;font-weight:800;background:var(--grad2);-webkit-background-clip:text;background-clip:text;color:transparent;display:block}
.stat span{font-size:13px;color:var(--muted)}

/* terminal */
.hero-visual{display:flex;justify-content:center}
.terminal{width:100%;max-width:480px;background:#0b1020;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;font-family:"SF Mono",Menlo,Consolas,monospace}
.term-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:#0d1326;border-bottom:1px solid var(--line)}
.term-bar .tm-r,.term-bar .tm-y,.term-bar .tm-g{width:11px;height:11px;border-radius:99px}
.tm-r{background:#ff5f57}.tm-y{background:#febc2e}.tm-g{background:#28c840}
.tm-title{margin-left:auto;color:var(--muted2);font-size:12px}
.term-body{padding:18px 20px;font-size:13px;line-height:1.85;white-space:pre;overflow-x:auto}
.term-body code{font-family:inherit;color:#cdd6ee}
.c-dim{color:#5d6783}.c-ok{color:#4ade80}.c-info{color:#22d3ee}
.cursor{display:inline-block;animation:blink 1s steps(2) infinite;color:#22d3ee}
@keyframes blink{50%{opacity:0}}

/* ===== Sections ===== */
.section{padding:90px 0}
.section-alt{background:var(--bg2)}
.section-head{max-width:680px;margin-bottom:54px}
.kicker{display:inline-block;font-size:13px;color:var(--brand2);letter-spacing:1px;text-transform:uppercase;font-weight:600;margin-bottom:14px}
.section-head h2{font-size:40px;line-height:1.2;font-weight:800;letter-spacing:-.5px}
.section-head h2 .muted{display:block;font-size:18px;font-weight:500;color:var(--muted);margin-top:8px;letter-spacing:0}
.section-head p{margin-top:18px;color:var(--muted);font-size:16px}

/* ===== Grids ===== */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}

/* ===== Cards ===== */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s;position:relative;overflow:hidden}
.card:hover{border-color:var(--muted2);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.feature .ficon{font-size:30px;margin-bottom:16px}
.feature h3{font-size:18px;margin-bottom:10px}
.feature p{color:var(--muted);font-size:14.5px}

/* ===== Pricing ===== */
.pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px}
.plan{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:flex;flex-direction:column;gap:18px}
.plan-pop{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand),0 20px 50px -20px rgba(74,222,128,.4);position:relative}
.plan-head{display:flex;align-items:center;justify-content:space-between}
.plan-head h3{font-size:20px;font-weight:700}
.plan-tag{font-size:12px;color:var(--muted2);padding:4px 10px;border-radius:99px;border:1px solid var(--line)}
.plan-tag.hot{color:#061018;background:var(--grad2);border-color:transparent;font-weight:600}
.price{display:flex;align-items:baseline;gap:6px}
.price b{font-size:32px;font-weight:800}
.price span{color:var(--muted);font-size:14px}
.plan ul{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14.5px;color:var(--muted)}
.plan ul li::first-letter{color:var(--brand)}

/* ===== Services ===== */
.service .sicon{font-size:30px;margin-bottom:14px}
.service h3{font-size:18px;margin-bottom:8px}
.service p{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.tags li{font-size:12px;color:var(--brand2);background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.2);padding:4px 10px;border-radius:6px}

/* ===== Timeline ===== */
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:20px 28px;counter-reset:tl}
.tl-item{display:flex;gap:18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.25s}
.tl-item:hover{border-color:var(--muted2)}
.tl-no{flex:0 0 38px;width:38px;height:38px;border-radius:10px;background:var(--grad2);color:#061018;font-weight:800;font-size:18px;display:grid;place-items:center}
.tl-body h3{font-size:16px;margin-bottom:6px}
.tl-body p{color:var(--muted);font-size:14px}

/* ===== Cases ===== */
.case-tag{display:inline-block;font-size:12px;color:var(--accent);background:rgba(167,139,250,.1);border:1px solid rgba(167,139,250,.25);padding:3px 10px;border-radius:6px;margin-bottom:14px}
.case h3{font-size:18px;margin-bottom:8px}
.case p{color:var(--muted);font-size:14.5px;margin-bottom:16px}
.case-meta{display:flex;justify-content:space-between;font-size:13px;color:var(--muted2);border-top:1px solid var(--line);padding-top:14px}

/* ===== Why ===== */
.why{padding:24px;border-left:2px solid var(--line);transition:.25s}
.why:hover{border-color:var(--brand);background:rgba(74,222,128,.04)}
.why-no{font-size:12px;color:var(--brand2);font-weight:700;letter-spacing:1px;margin-bottom:8px}
.why h3{font-size:16px;margin-bottom:6px}
.why p{color:var(--muted);font-size:14px}

/* ===== Contact ===== */
.contact-wrap{display:grid;grid-template-columns:1.5fr .9fr;gap:28px;align-items:start}
.contact-form{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:32px;display:flex;flex-direction:column;gap:18px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field span{font-size:14px;color:var(--text);font-weight:500}
.field span em{color:var(--brand);font-style:normal}
.field input,.field select,.field textarea{background:var(--bg2);border:1px solid var(--line);border-radius:8px;padding:11px 13px;color:var(--text);font-size:14.5px;font-family:inherit;transition:.2s;width:100%}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand2);box-shadow:0 0 0 3px rgba(34,211,238,.12)}
.field textarea{resize:vertical;min-height:110px}
.form-foot{display:flex;align-items:center;gap:16px;margin-top:4px}
.form-hint{font-size:13px;color:var(--muted);min-height:18px}
.form-hint.ok{color:var(--brand)}
.form-hint.err{color:#ff7a7a}
.contact-side{display:flex;flex-direction:column;gap:18px}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.side-card h3{font-size:15px;margin-bottom:12px}
.side-card p{font-size:14px;color:var(--muted);margin-bottom:8px}
.side-card a{color:var(--brand2)}
.side-dim{background:rgba(74,222,128,.04);border-color:rgba(74,222,128,.25)}

/* ===== Footer ===== */
.footer{border-top:1px solid var(--line);padding:40px 0;background:var(--bg2)}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;gap:24px;justify-content:space-between}
.foot-brand{font-weight:700;font-size:16px}
.foot-tag{color:var(--muted);font-size:13px;font-weight:400;margin-top:4px}
.foot-links{display:flex;gap:22px;font-size:14px;color:var(--muted)}
.foot-links a:hover{color:var(--text)}
.foot-copy{font-size:13px;color:var(--muted2);width:100%;text-align:center;border-top:1px solid var(--line);padding-top:22px;margin-top:8px}

/* ===== Reveal anim ===== */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ===== Nav GitHub link ===== */
.nav-gh{color:var(--brand2)!important;font-weight:600}

/* ===== Getting started ===== */
.start-wrap{display:grid;grid-template-columns:1.3fr .9fr;gap:28px;align-items:start}
.start-term{max-width:none}
.start-steps{display:flex;flex-direction:column;gap:14px}
.step{display:flex;gap:16px;align-items:flex-start;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;transition:.25s}
.step:hover{border-color:var(--muted2)}
.step-no{flex:0 0 32px;width:32px;height:32px;border-radius:8px;background:rgba(34,211,238,.12);color:var(--brand2);font-weight:800;display:grid;place-items:center;font-size:15px}
.step h3{font-size:15px;margin-bottom:4px}
.step p{color:var(--muted);font-size:13.5px}
.step p a{color:var(--brand2)}
.step-more .step-no{background:rgba(167,139,250,.12);color:var(--accent)}

/* ===== Roadmap states ===== */
.tl-ver{display:inline-block;font-size:12px;color:var(--brand2);font-weight:700;letter-spacing:.5px;margin-bottom:6px}
.tl-done{opacity:.78}
.tl-done .tl-no{background:rgba(74,222,128,.15);color:var(--brand);box-shadow:none}
.tl-now{border-color:var(--brand2)!important;box-shadow:0 0 0 1px var(--brand2),0 16px 40px -20px rgba(34,211,238,.5)}
.tl-now .tl-no{background:var(--grad2);color:#061018;animation:pulse-ring 2.4s infinite}
@keyframes pulse-ring{50%{box-shadow:0 0 0 8px rgba(34,211,238,0)}}

/* ===== Community cards ===== */
.community{display:flex;flex-direction:column;gap:8px}
.community .card-link{margin-top:auto;color:var(--brand2);font-size:13px;font-weight:600}
.community:hover .card-link{color:var(--brand)}

/* ===== License box ===== */
.license-box{margin-top:48px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:rgba(74,222,128,.05);border:1px solid rgba(74,222,128,.25);border-radius:var(--radius);padding:22px 28px;font-size:15px;color:var(--muted)}
.license-box b{color:var(--brand)}

/* ===== Responsive ===== */
@media(max-width:920px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-title{font-size:42px}
  .hero-visual{order:-1}
  .grid-2,.grid-3{grid-template-columns:1fr 1fr}
  .timeline{grid-template-columns:1fr 1fr}
  .pricing{grid-template-columns:1fr}
  .pricing .plan-pop{order:-1}
  .contact-wrap{grid-template-columns:1fr}
  .start-wrap{grid-template-columns:1fr}
  .nav-links{display:none}
}
@media(max-width:640px){
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav-links.open{display:flex;position:absolute;top:64px;left:0;right:0;background:var(--bg2);border-bottom:1px solid var(--line);flex-direction:column;padding:16px 24px;gap:14px}
  .section{padding:64px 0}
  .section-head h2{font-size:30px}
  .hero-title{font-size:34px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px}
  .grid-2,.grid-3,.timeline{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .form-foot{flex-direction:column;align-items:stretch}
  .foot-links{display:none}
}