:root {
  color-scheme: dark;
  --bg: #0a0f15;
  --panel: #121a24;
  --panel-soft: #0f1720;
  --line: #263447;
  --line-bright: #37506a;
  --text: #f2f6fb;
  --muted: #94a3b8;
  --primary: #38bdf8;
  --primary-soft: rgba(56,189,248,.12);
  --green: #34d399;
  --amber: #fbbf24;
  font-family: Inter, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: radial-gradient(circle at 80% 0, rgba(14,165,233,.09), transparent 28%), var(--bg); font-size: 13px; line-height: 1.55; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.site-header { position: sticky; z-index: 20; top: 0; border-bottom: 1px solid rgba(55,80,106,.65); background: rgba(10,15,21,.9); backdrop-filter: blur(16px); }
.header-inner, main, footer { width: min(100% - 36px, 1180px); margin: 0 auto; }
.header-inner { display: flex; min-height: 58px; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { display: grid; width: 34px; height: 34px; place-items: center; border: 1px solid #0ea5e9; border-radius: 9px; color: #7dd3fc; background: rgba(14,165,233,.08); font: 800 12px/1 Consolas, monospace; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 14px; }
.brand small { margin-top: 1px; color: #718096; font-size: 9px; }
nav { display: flex; align-items: center; gap: 22px; color: #aebbd0; font-size: 11px; }
nav a:hover { color: #e0f2fe; }
nav .portal-link { padding: 5px 9px; border: 1px solid var(--line-bright); border-radius: 7px; color: #dbeafe; }
nav .dealer-link { border-color: #3f5d54; color: #d1fae5; }
main { padding: 22px 0 30px; }
.card { border: 1px solid var(--line); border-radius: 13px; background: linear-gradient(145deg, rgba(20,29,40,.98), rgba(13,20,29,.98)); box-shadow: 0 14px 38px rgba(0,0,0,.15); }
.eyebrow { margin: 0 0 6px; color: #7dd3fc; font-size: 10px; font-weight: 850; letter-spacing: .14em; }
.button { display: inline-flex; min-height: 36px; align-items: center; justify-content: center; padding: 7px 14px; border: 1px solid var(--line); border-radius: 8px; font-size: 12px; font-weight: 800; white-space: nowrap; transition: transform .16s ease, border-color .16s ease, background .16s ease; }
.button:hover { transform: translateY(-1px); }
.button.primary { border-color: #0ea5e9; color: #06131b; background: var(--primary); box-shadow: 0 8px 24px rgba(14,165,233,.18); }
.button.primary:hover { background: #67cff7; }
.button.secondary { color: #dbeafe; background: #182433; }
.button.secondary:hover { border-color: #49617c; background: #1e2c3c; }

.hero { display: grid; grid-template-columns: minmax(0,1.55fr) minmax(290px,.75fr); gap: 28px; padding: 32px; overflow: hidden; position: relative; }
.hero::after { position: absolute; width: 260px; height: 260px; right: -100px; top: -125px; border-radius: 50%; background: rgba(56,189,248,.08); content: ""; filter: blur(4px); }
.hero-copy { position: relative; z-index: 1; }
.lifetime-badge { display: inline-flex; align-items: center; gap: 7px; margin: 2px 0 13px; padding: 4px 9px; border: 1px solid rgba(52,211,153,.3); border-radius: 999px; color: #a7f3d0; background: rgba(5,150,105,.09); font-size: 10px; font-weight: 800; }
.lifetime-badge span { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px rgba(52,211,153,.8); }
h1 { max-width: 720px; margin: 0; font-size: clamp(32px, 4.5vw, 50px); line-height: 1.08; letter-spacing: -.045em; }
h1 em { color: #7dd3fc; font-style: normal; }
.hero-lead { max-width: 720px; margin: 14px 0 0; color: #aab8cb; font-size: 14px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.purchase-hint { margin: 8px 0 0; color: #6f829a; font-size: 10px; }
.hero-metrics { display: grid; position: relative; z-index: 1; gap: 8px; align-content: center; }
.metric { display: grid; gap: 1px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 10px; background: rgba(8,14,21,.55); }
.metric.featured { border-color: rgba(52,211,153,.36); background: linear-gradient(135deg, rgba(5,150,105,.13), rgba(8,14,21,.55)); }
.metric small { color: #72839a; font-size: 9px; text-transform: uppercase; letter-spacing: .08em; }
.metric strong { font-size: 18px; letter-spacing: -.025em; }
.metric.featured strong { color: #a7f3d0; }
.metric span { color: #8fa0b6; font-size: 10px; }

.section-block { padding: 30px 0 4px; scroll-margin-top: 72px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 11px; }
.section-heading h2 { margin: 0; font-size: 22px; letter-spacing: -.025em; }
.count { padding: 3px 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 10px; }
.accent-count { border-color: rgba(52,211,153,.3); color: #a7f3d0; background: rgba(5,150,105,.08); }
.product-layout { display: grid; grid-template-columns: .92fr 1.6fr; gap: 10px; }
.core-card { position: relative; min-height: 100%; padding: 24px; overflow: hidden; }
.core-card::after { position: absolute; inset: auto -55px -70px auto; width: 180px; height: 180px; border: 1px solid rgba(56,189,248,.16); border-radius: 50%; content: ""; }
.card-number { position: absolute; right: 18px; top: 13px; color: rgba(125,211,252,.16); font: 900 44px/1 Consolas, monospace; }
.core-card h3 { margin: 8px 0 12px; font-size: 24px; line-height: 1.25; letter-spacing: -.03em; }
.core-card h3 strong { color: #7dd3fc; }
.core-card > p:not(.eyebrow) { max-width: 430px; margin: 0; color: #9badc2; }
.text-link { display: inline-flex; position: relative; z-index: 1; align-items: center; gap: 8px; margin-top: 22px; color: #7dd3fc; font-weight: 800; }
.text-link span { transition: transform .16s ease; }
.text-link:hover span { transform: translateX(3px); }
.feature-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
.feature-card { min-height: 150px; padding: 17px; border: 1px solid var(--line); border-radius: 12px; background: linear-gradient(145deg, rgba(19,28,39,.9), rgba(12,19,28,.95)); }
.feature-card:hover { border-color: var(--line-bright); }
.feature-icon { display: inline-grid; width: 28px; height: 24px; place-items: center; border: 1px solid rgba(56,189,248,.3); border-radius: 6px; color: #7dd3fc; background: var(--primary-soft); font: 800 9px/1 Consolas, monospace; }
.feature-card h3 { margin: 10px 0 5px; font-size: 16px; }
.feature-card p { margin: 0; color: #93a4ba; font-size: 12px; }
.feature-card p strong { color: #dff5ff; }
.notice-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 13px; margin-top: 10px; padding: 14px 16px; border: 1px solid rgba(251,191,36,.3); border-radius: 11px; background: rgba(161,98,7,.08); }
.notice-icon { display: grid; width: 28px; height: 28px; place-items: center; border: 1px solid rgba(251,191,36,.38); border-radius: 50%; color: #fde68a; font-weight: 900; }
.notice-card strong { color: #fde68a; }
.notice-card p { margin: 2px 0 0; color: #b7a989; font-size: 11px; }

.showcase-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
.showcase-card { display: grid; grid-template-columns: minmax(0,1.55fr) minmax(190px,.55fr); min-height: 240px; margin: 0; overflow: hidden; }
.showcase-card.compact { grid-template-columns: minmax(0,1fr) minmax(180px,.72fr); }
.showcase-card > a { display: grid; min-width: 0; overflow: hidden; background: #090d12; }
.showcase-card img { width: 100%; height: 100%; object-fit: contain; transition: transform .25s ease; }
.showcase-card:hover img { transform: scale(1.015); }
.showcase-card figcaption { display: flex; flex-direction: column; justify-content: center; padding: 18px; border-left: 1px solid var(--line); }
.showcase-card figcaption span { color: #7dd3fc; font-size: 9px; font-weight: 850; letter-spacing: .1em; }
.showcase-card figcaption strong { margin-top: 6px; font-size: 16px; line-height: 1.35; }
.showcase-card figcaption p { margin: 7px 0 0; color: #8192a9; font-size: 11px; }
.message { min-height: 18px; margin: 7px 2px 0; color: var(--muted); font-size: 11px; }
.message.error { color: #fda4af; }
.download-filter-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
  padding: 8px;
}
.download-filter-bar input {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 9px;
  color: var(--text);
  background: #111822;
  font: inherit;
  outline: none;
}
.download-filter-bar input:focus { border-color: #38bdf8; box-shadow: 0 0 0 2px rgba(56,189,248,.1); }
.download-filter-bar input[type="search"] { flex: 1 1 240px; min-width: 220px; max-width: 390px; }
.download-filter-bar input[type="date"] { width: 138px; color-scheme: dark; }
.download-filter-bar > span { color: var(--muted); font-size: 11px; }
.download-filter-bar .button { min-height: 34px; }
.table-wrap { width: 100%; overflow-x: auto; }
.download-table { width: 100%; min-width: 850px; border-collapse: collapse; }
.download-table th, .download-table td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.download-table th { color: #aebdd0; background: #18202b; font-size: 10px; letter-spacing: .03em; white-space: nowrap; }
.download-table tr:last-child td { border-bottom: 0; }
.download-table tbody tr:hover { background: rgba(255,255,255,.018); }
.download-table th:nth-child(1) { width: 90px; }
.download-table th:nth-child(2) { width: 230px; }
.download-table th:nth-child(4) { width: 170px; }
.download-table th:nth-child(5) { width: 170px; }
.file-type { display: inline-flex; padding: 3px 7px; border: 1px solid rgba(52,211,153,.32); border-radius: 999px; color: #a7f3d0; background: rgba(5,150,105,.11); font-size: 10px; font-weight: 750; }
.file-type.help { border-color: rgba(251,191,36,.32); color: #fde68a; background: rgba(161,98,7,.11); }
.file-name strong, .file-name span { display: block; }
.file-name span, .file-meta span { margin-top: 2px; color: var(--muted); font-size: 10px; }
.update-note { max-width: 400px; color: #cbd5e1; white-space: normal; overflow-wrap: anywhere; }
.download-actions { display: flex; gap: 5px; }
.empty { padding: 26px !important; color: var(--muted); text-align: center !important; }
.consultation-card { display: grid; grid-template-columns: auto minmax(0,1fr) auto auto; align-items: center; gap: 16px; padding: 17px 19px; border-color: rgba(56,189,248,.3); background: linear-gradient(110deg, rgba(14,165,233,.1), rgba(15,23,32,.98) 48%); }
.qq-mark { display: grid; width: 46px; height: 46px; place-items: center; border: 1px solid rgba(56,189,248,.42); border-radius: 13px; color: #7dd3fc; background: rgba(14,165,233,.11); font: 900 15px/1 Consolas, monospace; box-shadow: inset 0 0 20px rgba(14,165,233,.06); }
.consultation-copy strong { font-size: 17px; }
.consultation-copy p { margin: 3px 0 0; color: var(--muted); font-size: 11px; }
.group-number { min-width: 150px; padding: 8px 13px; border-left: 1px solid var(--line); }
.group-number small, .group-number strong { display: block; }
.group-number small { color: #718096; font-size: 9px; letter-spacing: .08em; }
.group-number strong { margin-top: 1px; color: #e0f2fe; font: 850 19px/1.3 Consolas, monospace; letter-spacing: .04em; }
.qq-count { border-color: rgba(56,189,248,.3); color: #bae6fd; background: rgba(14,165,233,.08); }
.copy-message { min-height: 18px; margin: 6px 2px 0; color: #8fa0b6; font-size: 10px; }

.help-strip { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 28px; padding: 15px 17px; }
.help-strip strong { font-size: 15px; }
.help-strip p { margin: 2px 0 0; color: var(--muted); font-size: 11px; }
footer { display: flex; align-items: center; justify-content: space-between; padding: 18px 0 28px; border-top: 1px solid var(--line); color: #6f7d91; font-size: 10px; }
footer a:hover { color: #bae6fd; }

@media (max-width: 980px) {
  nav { gap: 14px; }
  .hero { grid-template-columns: 1fr; }
  .hero-metrics { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .product-layout { grid-template-columns: 1fr; }
  .showcase-card, .showcase-card.compact { grid-template-columns: 1fr; }
  .showcase-card > a { min-height: 260px; }
  .showcase-card figcaption { border-top: 1px solid var(--line); border-left: 0; }
}
@media (max-width: 720px) {
  .header-inner, main, footer { width: min(100% - 20px, 1180px); }
  .brand small, nav a:not(.portal-link) { display: none; }
  nav { gap: 6px; }
  nav .portal-link { padding: 5px 8px; }
  main { padding-top: 12px; }
  .hero { padding: 21px; }
  h1 { font-size: 34px; }
  .hero-metrics, .feature-grid, .showcase-grid { grid-template-columns: 1fr; }
  .notice-card { grid-template-columns: auto 1fr; }
  .notice-card .button { grid-column: 1 / -1; width: 100%; }
  .showcase-card > a { min-height: 210px; }
  .consultation-card { grid-template-columns: auto minmax(0,1fr); }
  .group-number { grid-column: 1 / -1; padding: 10px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .consultation-card .button { grid-column: 1 / -1; width: 100%; }
  .help-strip { align-items: flex-start; flex-direction: column; }
  .help-strip .button { width: 100%; }
  .download-filter-bar { justify-content: flex-start; }
  .download-filter-bar input[type="search"] { max-width: none; width: 100%; }
}
@media (max-width: 460px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .button { width: 100%; }
  h1 { font-size: 30px; }
  .section-heading { align-items: flex-start; flex-direction: column; gap: 6px; }
  .download-filter-bar input[type="date"] { flex: 1 1 calc(50% - 18px); width: auto; min-width: 120px; }
  .core-card { padding: 19px; }
  .showcase-card > a { min-height: 175px; }
  .consultation-card { grid-template-columns: 1fr; text-align: center; }
  .qq-mark { margin: 0 auto; }
  .group-number, .consultation-card .button { grid-column: auto; }
}