:root {
  --primary: #166534;
  --secondary: #2563eb;
  --ink: #111827;
  --muted: #64748b;
  --line: #e2e8f0;
  --surface: #ffffff;
  --soft: #f5f7f9;
  --danger: #b91c1c;
  --radius: 8px;
  font-family: Inter, "Segoe UI", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--soft);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--soft); }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
.boot { min-height: 100vh; display: grid; place-content: center; text-align: center; color: var(--muted); }
.spinner { width: 28px; height: 28px; margin: auto; border: 3px solid var(--line); border-top-color: var(--primary); border-radius: 50%; animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.shell { min-height: 100vh; display: flex; flex-direction: column; }
.notice { padding: 8px 20px; text-align: center; color: #fff; background: var(--primary); font-size: 13px; }
.topbar { position: sticky; top: 0; z-index: 30; height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 0 max(20px, calc((100vw - 1180px) / 2)); border-bottom: 1px solid rgba(226,232,240,.9); background: rgba(255,255,255,.94); backdrop-filter: blur(12px); }
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; font-size: 19px; font-weight: 750; }
.brand img { width: 34px; height: 34px; object-fit: contain; border-radius: 6px; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; color: #fff; background: var(--primary); border-radius: 6px; font-weight: 800; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav a { padding: 9px 12px; color: #475569; font-size: 14px; border-radius: 6px; }
.nav a:hover, .nav a.active { color: var(--primary); background: color-mix(in srgb, var(--primary) 8%, white); }
.nav .primary-link { color: #fff; background: var(--primary); }
.mobile-menu { display: none; width: 38px; height: 38px; border: 1px solid var(--line); background: #fff; border-radius: 6px; }
.page { flex: 1; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.hero { position: relative; min-height: 510px; display: flex; align-items: center; overflow: hidden; color: #fff; background: #111827; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5,15,25,.92), rgba(5,15,25,.68) 55%, rgba(5,15,25,.28)), var(--hero-image, linear-gradient(135deg,#111827,#1f2937)); background-size: cover; background-position: center; }
.hero-content { position: relative; z-index: 1; width: min(760px, 100%); padding: 70px 0 88px; }
.hero.center .hero-content { margin: auto; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; font-size: 13px; font-weight: 700; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 22px; height: 2px; background: #4ade80; }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(38px, 6vw, 68px); line-height: 1.04; letter-spacing: 0; }
.hero p { max-width: 680px; margin: 22px 0 30px; color: #dbe4ee; font-size: 18px; line-height: 1.75; }
.hero.center p { margin-left: auto; margin-right: auto; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero.center .actions { justify-content: center; }
.btn { min-height: 42px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 0 18px; border: 1px solid transparent; border-radius: 6px; cursor: pointer; font-weight: 700; transition: .18s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: #fff; background: var(--primary); }
.btn-secondary { color: var(--ink); background: #fff; border-color: var(--line); }
.btn-ghost { color: #fff; background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.35); }
.btn-danger { color: var(--danger); background: #fff; border-color: #fecaca; }
.btn-block { width: 100%; }
.band { padding: 68px 0; background: var(--surface); }
.band.alt { background: var(--soft); }
.section-head { max-width: 680px; margin-bottom: 30px; }
.section-head h2 { margin: 0 0 10px; font-size: 30px; letter-spacing: 0; }
.section-head p { margin: 0; color: var(--muted); line-height: 1.7; }
.stat-grid, .feature-grid, .plan-grid { display: grid; gap: 16px; }
.stat-grid { grid-template-columns: repeat(4, 1fr); }
.feature-grid { grid-template-columns: repeat(3, 1fr); }
.plan-grid { grid-template-columns: repeat(3, 1fr); }
.stat, .feature, .plan-card { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.stat strong { display: block; color: var(--primary); font-size: 28px; }
.stat span, .feature p { color: var(--muted); }
.feature-index { width: 34px; height: 34px; display: grid; place-items: center; margin-bottom: 18px; color: #fff; background: var(--secondary); border-radius: 6px; font-size: 13px; font-weight: 800; }
.feature h3 { margin: 0 0 8px; font-size: 18px; }
.feature p { margin: 0; line-height: 1.65; }
.about { max-width: 850px; font-size: 17px; line-height: 1.9; color: #334155; white-space: pre-line; }
.faq { display: grid; gap: 10px; }
.faq details { padding: 17px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq p { margin: 12px 0 0; color: var(--muted); line-height: 1.7; }
.auth-wrap { min-height: calc(100vh - 66px); display: grid; place-items: center; padding: 46px 20px; background: #eef2f4; }
.auth-box { width: min(440px, 100%); padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 18px 60px rgba(15,23,42,.08); }
.auth-box h1 { margin: 0 0 8px; font-size: 26px; }
.auth-box .lead { margin: 0 0 24px; color: var(--muted); }
.form { display: grid; gap: 16px; }
.field { display: grid; gap: 7px; }
.field label { font-size: 13px; font-weight: 700; }
.input { width: 100%; height: 44px; padding: 0 12px; border: 1px solid #cbd5e1; border-radius: 6px; outline: none; background: #fff; }
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 14%, transparent); }
.inline-field { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
.text-link { color: var(--primary); font-weight: 700; }
.ip-refresh { margin-top: 5px; padding: 0; border: 0; background: none; cursor: pointer; font-size: 12px; }
.auth-foot { margin: 20px 0 0; text-align: center; color: var(--muted); font-size: 14px; }
.catalog-head { padding: 46px 0 24px; }
.catalog-head h1 { margin: 0 0 8px; font-size: 32px; }
.catalog-head p { color: var(--muted); }
.filters { display: flex; gap: 8px; margin-bottom: 20px; overflow-x: auto; padding-bottom: 4px; }
.chip { flex: 0 0 auto; padding: 8px 13px; border: 1px solid var(--line); border-radius: 999px; background: #fff; cursor: pointer; }
.chip.active { color: #fff; border-color: var(--primary); background: var(--primary); }
.plan-card { display: flex; flex-direction: column; gap: 16px; }
.plan-top { display: flex; justify-content: space-between; gap: 10px; }
.plan-top h3 { margin: 0; }
.tag { display: inline-flex; align-items: center; padding: 4px 8px; border-radius: 4px; color: var(--primary); background: color-mix(in srgb, var(--primary) 10%, white); font-size: 12px; font-weight: 700; }
.specs { display: grid; grid-template-columns: repeat(2,1fr); gap: 9px; color: #475569; font-size: 14px; }
.price { margin-top: auto; }
.price strong { font-size: 30px; }
.price del { margin-left: 8px; color: #94a3b8; }
.price small { color: var(--muted); }
.workspace { padding: 36px 0 64px; }
.workspace-grid { display: grid; grid-template-columns: minmax(0,1fr) 330px; gap: 20px; align-items: start; }
.panel { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.panel + .panel { margin-top: 16px; }
.panel h2 { margin: 0 0 20px; font-size: 20px; }
.term-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.term { position: relative; padding: 14px 8px; text-align: center; border: 1px solid var(--line); border-radius: 6px; background: #fff; cursor: pointer; }
.term.active { border-color: var(--primary); box-shadow: inset 0 0 0 1px var(--primary); }
.term small { display: block; margin-top: 5px; color: var(--primary); }
.summary { position: sticky; top: 86px; }
.summary-row { display: flex; justify-content: space-between; gap: 14px; margin: 12px 0; color: var(--muted); }
.summary-total { display: flex; justify-content: space-between; align-items: end; margin: 20px 0; padding-top: 18px; border-top: 1px solid var(--line); }
.summary-total strong { color: var(--primary); font-size: 30px; }
.payment-grid { display: grid; gap: 9px; }
.pay-option { display: flex; align-items: center; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: 6px; cursor: pointer; }
.pay-option.active { border-color: var(--primary); background: color-mix(in srgb, var(--primary) 5%, white); }
.pay-icon { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 6px; background: #eef2ff; font-weight: 800; }
.instance-list { display: grid; gap: 12px; }
.instance { display: grid; grid-template-columns: minmax(170px,1.5fr) repeat(4,minmax(100px,1fr)); gap: 16px; align-items: center; padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.order-list, .ticket-list { display: grid; gap: 12px; }
.order-card { display: grid; grid-template-columns: minmax(160px,1.5fr) repeat(3,minmax(120px,1fr)) auto; gap: 16px; align-items: center; padding: 18px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.order-card > div:first-child strong, .order-card > div:first-child .muted { display: block; }
.order-card > div:first-child .muted { margin-top: 5px; }
.status-pending { color: #b45309; }
.ticket-card { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.ticket-head, .ticket-actions { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.ticket-card h3 { margin: 13px 0 7px; font-size: 17px; }
.ticket-card p { margin: 0 0 10px; color: #475569; line-height: 1.65; white-space: pre-line; }
.ticket-actions { justify-content: flex-start; margin-top: 14px; }
.support-grid { align-items: start; }
.textarea { height: auto; padding: 12px; resize: vertical; }
.instance-name strong { display: block; margin-bottom: 5px; }
.instance-label { display: block; margin-bottom: 4px; color: var(--muted); font-size: 12px; }
.status { display: inline-flex; align-items: center; gap: 6px; color: #166534; font-weight: 700; }
.status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.empty { padding: 60px 24px; text-align: center; color: var(--muted); border: 1px dashed #cbd5e1; border-radius: var(--radius); background: #fff; }
.airwallex-box { min-height: 310px; padding: 18px; border: 1px solid var(--line); border-radius: 6px; }
.result { max-width: 620px; margin: 70px auto; padding: 42px; text-align: center; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.result-mark { width: 58px; height: 58px; display: grid; place-items: center; margin: 0 auto 18px; color: #fff; background: var(--primary); border-radius: 50%; font-size: 26px; font-weight: 800; }
.footer { margin-top: auto; padding: 30px 20px; color: #94a3b8; background: #0f172a; text-align: center; font-size: 13px; line-height: 1.7; }
.toast { position: fixed; z-index: 100; right: 20px; bottom: 20px; max-width: min(380px, calc(100vw - 40px)); padding: 13px 16px; color: #fff; background: #111827; border-radius: 6px; opacity: 0; transform: translateY(10px); pointer-events: none; transition: .2s; box-shadow: 0 10px 35px rgba(15,23,42,.22); }
.toast.show { opacity: 1; transform: translateY(0); }
.error-page { min-height: 100vh; display: grid; place-content: center; padding: 30px; text-align: center; }
.error-page h1 { margin-bottom: 8px; }
.muted { color: var(--muted); }
.danger { color: var(--danger); }
.hidden { display: none !important; }
@media (max-width: 900px) {
  .stat-grid, .plan-grid { grid-template-columns: repeat(2,1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .workspace-grid { grid-template-columns: 1fr; }
  .summary { position: static; }
  .instance { grid-template-columns: repeat(2,1fr); }
  .instance-name { grid-column: 1 / -1; }
  .order-card { grid-template-columns: repeat(2,1fr); }
  .order-card > div:first-child { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
  .container { width: min(100% - 28px, 1180px); }
  .topbar { height: 60px; padding: 0 14px; }
  .mobile-menu { display: block; }
  .nav { position: fixed; top: 60px; left: 0; right: 0; display: none; align-items: stretch; flex-direction: column; padding: 12px 14px 18px; border-bottom: 1px solid var(--line); background: #fff; }
  .nav.open { display: flex; }
  .nav a { padding: 11px 12px; }
  .hero { min-height: 520px; }
  .hero h1 { font-size: 40px; overflow-wrap: anywhere; }
  .hero p { font-size: 16px; }
  .band { padding: 50px 0; }
  .stat-grid, .plan-grid { grid-template-columns: 1fr; }
  .auth-box { padding: 24px 20px; }
  .term-grid { grid-template-columns: repeat(2,1fr); }
  .panel { padding: 19px; }
  .instance { grid-template-columns: 1fr; }
  .instance-name { grid-column: auto; }
  .order-card { grid-template-columns: 1fr; }
  .order-card > div:first-child { grid-column: auto; }
}