:root{
  --bg:#FFFFFF;--bg-raised:#FFFFFF;--bg-raised-2:#EFF6FF;
  --line:#DBEAFE;--text:#0F172A;--text-dim:#475569;--text-faint:#94A3B8;
  --amber:#0098F0;--amber-dim:#0077CC;--amber-glow:#0098F0;
  --green:#0284C7;--green-ink:#0284C7;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --dotop:0.04;--shadow:0 30px 60px -30px rgba(0,0,0,0.1);
  --nav-bg:rgba(248,250,252,0.88);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{background:var(--bg);color:var(--text);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased;transition:background .2s ease,color .2s ease;}
body::before{content:'';position:fixed;inset:0;background-image:radial-gradient(circle at 1px 1px,rgba(128,110,90,var(--dotop)) 1px,transparent 0);background-size:28px 28px;pointer-events:none;z-index:0;}
a{color:inherit;text-decoration:none;}
.wrap{max-width:1080px;margin:0 auto;padding:0 32px;position:relative;z-index:1;}
::selection{background:var(--amber);color:#FFFFFF;}

/* NAV */
nav{position:sticky;top:0;z-index:50;background:var(--nav-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{font-family:var(--mono);font-weight:700;font-size:16px;display:flex;align-items:center;gap:10px;}
.logo-icon{width:36px;height:36px;border-radius:8px;background:#FFFFFF;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,0.08);}
.logo-icon img{display:block;}
.navlinks{display:flex;gap:36px;font-size:14px;color:var(--text-dim);}
.navlinks a:hover{color:var(--text);}
.nav-cta{font-family:var(--mono);font-size:13px;font-weight:500;background:var(--amber);color:#FFFFFF;padding:9px 18px;border-radius:6px;transition:background .15s ease;}
.nav-cta:hover{background:var(--amber-glow);}
.nav-right{display:flex;align-items:center;gap:16px;}
.nav-github{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:6px;color:var(--text-dim);transition:color .15s ease,background .15s ease;}
.nav-github:hover{color:var(--text);background:var(--bg-raised-2);}
.nav-toggle{display:none;background:none;border:1px solid var(--line);width:36px;height:36px;border-radius:6px;font-size:18px;color:var(--text);cursor:pointer;flex-shrink:0;line-height:1;}
.nav-toggle:hover{border-color:var(--text-faint);}
@media(max-width:760px){
  nav .wrap{position:relative;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .navlinks{
    display:none;
    position:absolute;top:64px;left:0;right:0;z-index:40;
    background:var(--bg-raised);
    border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;
    padding:4px 0;
    box-shadow:0 12px 24px -12px rgba(0,0,0,0.12);
  }
  .navlinks.open{display:flex;}
  .navlinks a{padding:14px 32px;border-bottom:1px solid var(--line);font-size:15px;}
  .navlinks a:last-child{border-bottom:none;}
  .navlinks a:hover{background:var(--bg-raised-2);}
}

/* SECTIONS */
section{padding:88px 0;border-top:1px solid var(--line);}
.section-head{max-width:600px;margin-bottom:56px;}
.section-eyebrow{font-family:var(--mono);font-size:12px;color:var(--amber-dim);text-transform:uppercase;letter-spacing:0.08em;margin-bottom:14px;}
h2{font-family:var(--mono);font-size:clamp(24px,3vw,32px);font-weight:700;letter-spacing:-0.01em;}
.section-desc{margin-top:14px;color:var(--text-dim);font-size:16px;}

/* PRICING */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.price-card{background:var(--bg-raised);border:1px solid var(--line);border-radius:12px;padding:32px 28px;display:flex;flex-direction:column;transition:border-color .15s ease,transform .15s ease;}
.price-card:hover{border-color:var(--text-faint);transform:translateY(-2px);}
.price-card.featured{border:1.5px solid var(--amber);background:var(--bg-raised-2);position:relative;}
.price-badge{position:absolute;top:-12px;left:28px;background:var(--amber);color:#FFFFFF;font-family:var(--mono);font-size:11px;font-weight:700;padding:4px 10px;border-radius:5px;}
.price-tier{font-family:var(--mono);font-size:13px;color:var(--text-dim);text-transform:uppercase;letter-spacing:0.06em;}
.price-amount{font-family:var(--mono);font-size:36px;font-weight:800;margin:14px 0 4px;}
.price-amount span{font-size:14px;color:var(--text-faint);font-weight:400;}
.price-desc{font-size:13px;color:var(--text-dim);margin-bottom:24px;}
.price-list{list-style:none;margin-bottom:28px;flex:1;}
.price-list li{font-size:14px;color:var(--text-dim);padding:9px 0;border-top:1px solid var(--line);display:flex;align-items:center;gap:10px;}
.price-list li:first-child{border-top:none;}
.price-list li::before{content:'+';font-family:var(--mono);color:var(--green);font-weight:700;}
.price-btn{text-align:center;padding:12px;border-radius:7px;font-family:var(--mono);font-size:13px;font-weight:500;border:1px solid var(--line);cursor:pointer;background:transparent;color:var(--text);transition:all .15s ease;display:block;width:100%;}
.price-card.featured .price-btn{background:var(--amber);color:#FFFFFF;border:none;}
.price-btn:hover{border-color:var(--text-faint);}
.price-card.featured .price-btn:hover{background:var(--amber-glow);}
@media(max-width:820px){.price-grid{grid-template-columns:1fr;}}
.loading{text-align:center;padding:60px 0;color:var(--text-dim);font-family:var(--mono);font-size:14px;}

/* MODAL */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.6);backdrop-filter:blur(4px);z-index:100;align-items:center;justify-content:center;}
.modal-overlay.active{display:flex;}
.modal{background:var(--bg-raised);border:1px solid var(--line);border-radius:16px;padding:36px;max-width:480px;width:90%;position:relative;box-shadow:var(--shadow);}
.modal-close{position:absolute;top:16px;right:16px;background:none;border:none;color:var(--text-faint);cursor:pointer;font-size:20px;line-height:1;padding:4px;}
.modal-close:hover{color:var(--text);}
.modal h3{font-family:var(--mono);font-size:18px;font-weight:700;margin-bottom:20px;}
.modal-step{display:none;}
.modal-step.active{display:block;}
.modal-info{background:var(--bg-raised-2);border:1px solid var(--line);border-radius:8px;padding:16px;margin-bottom:20px;}
.modal-info .info-row{display:flex;justify-content:space-between;font-size:14px;padding:4px 0;}
.modal-info .info-row .label{color:var(--text-dim);}
.modal-info .info-row .value{font-family:var(--mono);font-weight:600;}

/* Payment method selector */
.pay-methods{display:flex;flex-direction:column;gap:10px;margin-bottom:24px;}
.pay-method{display:flex;align-items:center;gap:12px;padding:14px 16px;border:1.5px solid var(--line);border-radius:8px;cursor:pointer;transition:all .15s ease;background:var(--bg);}
.pay-method:hover{border-color:var(--text-faint);}
.pay-method.selected{border-color:var(--amber);background:var(--bg-raised-2);}
.pay-method .radio{width:18px;height:18px;border-radius:50%;border:2px solid var(--line);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:border-color .15s ease;}
.pay-method.selected .radio{border-color:var(--amber);}
.pay-method.selected .radio::after{content:'';width:10px;height:10px;border-radius:50%;background:var(--amber);}
.pay-method .pm-name{font-size:14px;font-weight:500;}

.modal-btn{width:100%;padding:14px;border-radius:8px;font-family:var(--mono);font-size:14px;font-weight:600;border:none;cursor:pointer;transition:all .15s ease;background:var(--amber);color:#FFFFFF;}
.modal-btn:hover{background:var(--amber-glow);}
.modal-btn:disabled{opacity:0.5;cursor:not-allowed;}

/* Result */
.result-box{text-align:center;padding:20px 0;}
.result-box .icon{font-size:48px;margin-bottom:16px;}
.result-box .msg{font-size:15px;color:var(--text-dim);margin-bottom:20px;line-height:1.6;}
.code-display{background:var(--bg-raised-2);border:1px solid var(--line);border-radius:8px;padding:16px;font-family:var(--mono);font-size:20px;font-weight:700;color:var(--amber);letter-spacing:0.05em;margin-bottom:16px;word-break:break-all;}
.copy-btn{font-family:var(--mono);font-size:13px;padding:10px 20px;border-radius:6px;border:1px solid var(--line);background:transparent;color:var(--text);cursor:pointer;transition:all .15s ease;margin-right:8px;}
.copy-btn:hover{border-color:var(--amber);color:var(--amber);}
.spinner{display:inline-block;width:18px;height:18px;border:2px solid var(--line);border-top-color:var(--amber);border-radius:50%;animation:spin .6s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

/* My Orders list */
.orders-content{max-height:60vh;overflow-y:auto;}
.order-item{
  background:var(--bg-raised-2);border:1px solid var(--line);border-radius:8px;
  padding:14px 16px;margin-bottom:10px;
}
.order-item .order-head{
  display:flex;justify-content:space-between;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;color:var(--text-dim);margin-bottom:8px;flex-wrap:wrap;
}
.order-item .order-head b{color:var(--text);font-size:14px;}
.order-item .order-code{
  font-family:var(--mono);font-size:16px;font-weight:700;color:var(--amber);
  letter-spacing:0.04em;word-break:break-all;
  background:var(--bg);border:1px dashed var(--line);border-radius:6px;
  padding:10px 12px;margin-top:8px;
  display:flex;justify-content:space-between;align-items:center;gap:10px;
}
.order-item .order-code button{
  flex-shrink:0;font-family:var(--mono);font-size:12px;
  padding:6px 12px;border-radius:5px;
  background:var(--amber);color:#fff;border:none;cursor:pointer;
}
.order-item .order-code button:hover{background:var(--amber-glow);}
.orders-empty{text-align:center;padding:30px 10px;color:var(--text-faint);font-size:14px;line-height:1.7;}

/* FOOTER */
footer{padding:48px 0;border-top:1px solid var(--line);}
footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;}
.footer-meta{font-family:var(--mono);font-size:12px;color:var(--text-faint);}
.footer-links{display:flex;gap:24px;font-size:13px;color:var(--text-dim);}
.footer-links a:hover{color:var(--text);}
@media(max-width:600px){footer .wrap{flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:12px;}}