:root {
  --ink: #0b1020;
  --ink2: #111b35;
  --ink3: #1a2547;
  --panel: #ffffff;
  --panel2: #f6f8fc;
  --panelDark: #0e1530;
  --text: #16213e;
  --muted: #5b6b8c;
  --line: #e3e8f4;
  --indigo: #6366f1;
  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --green: #34d399;
  --amber: #f59e0b;
  --danger: #ef4444;
  --grad: linear-gradient(135deg, #6366f1, #8b5cf6 55%, #22d3ee);
  --grad-soft: linear-gradient(135deg, #eef0ff, #f6f0ff 55%, #e8fbff);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(11, 16, 32, 0.08);
  --shadow-lg: 0 24px 60px rgba(11, 16, 32, 0.16);
  --font: 'Inter', 'Segoe UI', 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Courier New', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background: #fbfcff;
  line-height: 1.65;
  font-size: 16px;
}

a { color: var(--indigo); text-decoration: none; }
a:hover { text-decoration: none; }
img, svg { max-width: 100%; display: block; }
.container { width: min(1160px, 92%); margin-inline: auto; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(11, 16, 32, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nav-inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; color: #fff; font-size: 15px; letter-spacing: 1px; }
.nav-logo img { height: 26px; width: auto; }
.nav-links { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav-links a {
  color: #cbd5f5; padding: 8px 14px; border-radius: 8px;
  font-size: 14px; font-weight: 500; transition: all .18s;
}
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav-links a.active { color: #fff; background: rgba(99, 102, 241, 0.28); }
.nav-cta {
  margin-left: 10px; padding: 8px 18px; border-radius: 999px;
  background: var(--grad); color: #fff !important; font-weight: 600;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}
.nav-cta:hover { filter: brightness(1.08); box-shadow: 0 6px 22px rgba(99, 102, 241, 0.5); }
.nav-burger { display: none; background: none; border: 0; color: #fff; font-size: 22px; cursor: pointer; padding: 6px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(1200px 600px at 20% -10%, #241e5e 0%, transparent 55%),
              radial-gradient(1000px 560px at 85% 0%, #0e4457 0%, transparent 50%),
              linear-gradient(180deg, #0b1020 0%, #101a3a 100%);
  color: #e6eaff;
  padding: 96px 0 88px;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(80% 80% at 50% 30%, #000 30%, transparent 75%);
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 2px; color: #9fb4ff;
  border: 1px solid rgba(139, 92, 246, .45); border-radius: 999px;
  padding: 6px 16px; background: rgba(99, 102, 241, .12); margin-bottom: 22px;
}
.hero h1 { font-size: clamp(32px, 4.6vw, 52px); line-height: 1.18; font-weight: 800; letter-spacing: -0.5px; color: #fff; }
.hero h1 .grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { margin-top: 18px; font-size: clamp(16px, 1.6vw, 19px); color: #b9c3e2; max-width: 560px; }
.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; font-weight: 600; font-size: 15px;
  transition: all .2s; cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 8px 24px rgba(99, 102, 241, .35); }
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost { border-color: rgba(255, 255, 255, .22); color: #e6eaff; background: rgba(255, 255, 255, .04); }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); }
.btn-dark { background: var(--ink2); color: #fff; border-color: var(--ink3); }
.btn-dark:hover { background: var(--ink3); }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.hero-stats { margin-top: 40px; display: flex; gap: 34px; flex-wrap: wrap; }
.hero-stats .stat b { display: block; font-size: 26px; font-weight: 800; color: #fff; font-family: var(--mono); }
.hero-stats .stat span { font-size: 13px; color: #8fa0c8; }

/* 首页 hero 插画位 */
.hero-visual { position: relative; }
.hero-visual .glass {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
}

/* ---------- 通用区块 ---------- */
.section { padding: 88px 0; }
.section.alt { background: var(--panel2); }
.section-dark { background: linear-gradient(180deg, #101a3a 0%, #0b1020 100%); color: #dbe2f7; }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head .eyebrow { font-size: 13px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--indigo); }
.section-dark .section-head .eyebrow { color: var(--cyan); }
.section-head h2 { font-size: clamp(26px, 3.2vw, 38px); font-weight: 800; letter-spacing: -0.4px; margin: 10px 0 14px; line-height: 1.25; }
.section-head p { color: var(--muted); font-size: 16px; }
.section-dark .section-head p { color: #9db0d6; }

/* ---------- 卡片 ---------- */
.cards { display: grid; gap: 24px; }
.cards.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cards.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cards.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: all .22s; display: flex; flex-direction: column; gap: 12px;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #cfd6ef; }
.card .icon { width: 48px; height: 48px; border-radius: 13px; display: grid; place-items: center; font-size: 22px; background: var(--grad-soft); color: var(--indigo); }
.card h3 { font-size: 18px; font-weight: 700; }
.card p { color: var(--muted); font-size: 14.5px; flex: 1; }
.tag {
  display: inline-flex; align-items: center; font-size: 12px; font-weight: 600;
  padding: 3px 10px; border-radius: 999px;
  background: rgba(99, 102, 241, .1); color: #4f46e5;
}
.tag.cyan { background: rgba(34, 211, 238, .12); color: #0e7490; }

/* ---------- 产品卡（首页三款） ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card {
  position: relative; background: var(--panel); border: 1px solid var(--line);
  border-radius: 20px; overflow: hidden; display: flex; flex-direction: column;
  transition: all .25s;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: #cfd6ef; }
.product-card .thumb { padding: 20px 20px 0; background: linear-gradient(180deg, #eef0ff 0%, #fbfcff 78%); }
.product-card .body { padding: 22px 24px 26px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product-card h3 { font-size: 20px; font-weight: 800; display: flex; align-items: center; gap: 10px; }
.product-card .one-liner { color: var(--muted); font-size: 14.5px; flex: 1; }
.product-card ul.features { list-style: none; display: flex; flex-direction: column; gap: 7px; font-size: 14px; margin-top: 4px; }
.product-card ul.features li { color: var(--text); display: flex; gap: 8px; }
.product-card ul.features li::before { content: "✓"; color: var(--cyan); font-weight: 800; }
.product-card .cta-row { margin-top: 16px; display: flex; gap: 10px; align-items: center; }
.product-card .cta-row .btn { flex: 1; justify-content: center; }

/* ---------- 特性点 ---------- */
.feature-rows { display: flex; flex-direction: column; gap: 26px; }
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.feature-row.flip .feature-text { order: 2; }
.feature-row .feature-text h3 { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.feature-row .feature-text p { color: var(--muted); margin-bottom: 14px; }
.feature-row ul.tick { list-style: none; display: flex; flex-direction: column; gap: 9px; font-size: 14.5px; }
.feature-row ul.tick li { display: flex; gap: 9px; align-items: baseline; }
.feature-row ul.tick li::before { content: "✓"; color: var(--indigo); font-weight: 800; }
.feature-frame {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px; box-shadow: var(--shadow); display: flex;
}

/* ---------- 流水线 ---------- */
.pipeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.pipe { position: relative; background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .1); border-radius: var(--radius); padding: 22px; }
.pipe::before { counter-increment: step; content: "0" counter(step); font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--cyan); }
.pipe h4 { margin: 10px 0 6px; color: #fff; font-size: 16px; }
.pipe p { color: #9db0d6; font-size: 13.5px; }

/* ---------- 步骤表 ---------- */
.dl { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.dl-item { border-top: 2px solid var(--line); padding-top: 16px; }
.dl-item b { display: block; font-size: 15px; margin-bottom: 6px; }
.dl-item span { font-size: 13.5px; color: var(--muted); }

/* ---------- CTA / 页脚 ---------- */
.cta-band { border-radius: 24px; padding: 52px 40px; text-align: center; color: #fff; background: linear-gradient(135deg, #1a2547 0%, #0e1530 60%), radial-gradient(600px 300px at 80% 0%, #8b5cf6 0%, transparent 60%); }
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; }
.cta-band p { color: #b9c3e2; margin: 14px auto 26px; max-width: 560px; }
.cta-band .btn { background: var(--grad); }
.footer { background: #0b1020; color: #94a3c8; padding: 52px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer h5 { color: #fff; font-size: 14px; margin-bottom: 14px; letter-spacing: 1px; }
.footer a { color: #94a3c8; display: block; padding: 5px 0; font-size: 14px; }
.footer a:hover { color: #fff; }
.footer .brand p { font-size: 13px; color: #6b7aa8; max-width: 300px; margin-top: 12px; }
.footer-bottom { margin-top: 36px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .08); font-size: 13px; color: #5d6c97; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ---------- 下载页 ---------- */
.dl-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 30px; display: flex; gap: 22px; align-items: center; box-shadow: var(--shadow); margin-bottom: 20px; }
.dl-card .dl-icon { width: 58px; height: 58px; border-radius: 15px; display: grid; place-items: center; background: var(--grad-soft); color: var(--indigo); font-weight: 800; font-size: 20px; flex: none; }
.dl-card:nth-child(2) .dl-icon { color: var(--cyan); }
.dl-card:nth-child(3) .dl-icon { color: #0d9488; }
.dl-card .dl-meta { flex: 1; }
.dl-card .dl-meta h3 { font-size: 17px; font-weight: 700; }
.dl-card .dl-meta p { font-size: 13.5px; color: var(--muted); margin-top: 3px; }
.dl-card .dl-meta .ver { font-family: var(--mono); color: var(--indigo); font-weight: 600; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--muted); padding: 10px 12px; border-bottom: 2px solid var(--line); }
.table td { padding: 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table tr:hover td { background: var(--panel2); }
.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: 999px; }
.badge.live { background: rgba(52, 211, 153, .14); color: #047857; }
.badge.soon { background: rgba(245, 158, 11, .14); color: #b45309; }

/* ---------- 关于页 ---------- */
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value { background: var(--panel2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.value b.k { font-family: var(--mono); font-size: 26px; color: var(--indigo); font-weight: 800; }
.value h3 { font-size: 17px; margin: 10px 0 8px; }
.value p { font-size: 14px; color: var(--muted); }

/* ---------- 页面头部（子页面） ---------- */
.page-hero { background: linear-gradient(180deg, #0b1020 0%, #131d40 100%); color: #e6eaff; padding: 72px 0 60px; position: relative; overflow: hidden; }
.page-hero::after { content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 44px 44px; }
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(28px, 3.6vw, 44px); font-weight: 800; color: #fff; letter-spacing: -0.4px; }
.page-hero .lead { color: #b9c3e2; max-width: 720px; margin-top: 14px; font-size: 17px; }
.breadcrumb { font-size: 13px; color: #8fa0c8; margin-bottom: 18px; }
.breadcrumb a { color: #9fb4ff; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .product-grid { grid-template-columns: 1fr; }
  .cards.cols-3, .cards.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .pipeline, .dl { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; }
  .feature-row.flip .feature-text { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links {
    position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: stretch;
    background: rgba(11, 16, 32, .97); padding: 12px 20px 20px; gap: 4px;
    display: none; border-bottom: 1px solid rgba(255,255,255,.08);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
  .nav-cta { margin-left: 0; text-align: center; }
  .nav-burger { display: block; margin-left: auto; }
}
@media (max-width: 640px) {
  .cards.cols-3, .cards.cols-4, .dl { grid-template-columns: 1fr; }
  .values { grid-template-columns: 1fr; }
  .cta-band { padding: 38px 24px; }
  .hero { padding: 64px 0; }
  .hero-stats { gap: 22px; }
  .dl-card { flex-direction: column; align-items: flex-start; }
}

/* ---------- 留资表单 ---------- */
.lead-wrap { max-width: 640px; margin: 36px auto 0; }
.lead-form { display: grid; gap: 14px; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); text-align: left; }
.lead-form label { display: block; font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 6px; }
.lead-form input[type="text"], .lead-form select, .lead-form textarea {
  width: 100%; padding: 11px 14px; font-size: 15px; font-family: inherit; color: var(--text);
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: #fbfcff;
}
.lead-form input:focus, .lead-form select:focus, .lead-form textarea:focus {
  outline: none; border-color: var(--indigo); box-shadow: 0 0 0 3px rgba(99, 102, 241, .12);
}
.lead-form textarea { resize: vertical; min-height: 88px; }
.lead-form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.lead-honey { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.lead-msg { font-size: 14px; min-height: 22px; }
.lead-msg.ok { color: #047857; }
.lead-msg.err { color: #b91c1c; }
@media (max-width: 640px) { .lead-form .row2 { grid-template-columns: 1fr; } }

/* ---------- 右下角浮层菜单 ---------- */
.float-widget { position: fixed; right: 22px; bottom: 22px; z-index: 90; font-family: inherit; }
.float-fab { width: 56px; height: 56px; border-radius: 50%; border: none; cursor: pointer;
  background: var(--grad); color: #fff; font-size: 15px; font-weight: 700;
  box-shadow: 0 8px 24px rgba(99, 102, 241, .4); display: grid; place-items: center; }
.float-fab:hover { filter: brightness(1.1); }
.float-fab svg { width: 26px; height: 26px; }
.float-panel { position: absolute; right: 0; bottom: 66px; width: 240px;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 8px; display: none; }
.float-panel.open { display: block; }
.float-item { display: flex; align-items: center; gap: 10px; width: 100%; text-align: left;
  background: none; border: none; border-radius: var(--radius-sm); padding: 10px 12px;
  font-size: 14px; color: var(--text); cursor: pointer; text-decoration: none; }
a.float-item:hover, button.float-item:hover { background: var(--panel2); }
.float-item .dot { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center;
  background: var(--grad-soft); font-weight: 800; color: var(--indigo); flex: none; font-size: 15px; }
.float-item small { display: block; font-size: 12px; color: var(--muted); font-weight: 400; }
.float-qr { margin: 4px 12px 8px; border: 1.5px dashed var(--line); border-radius: var(--radius-sm);
  padding: 18px 10px; text-align: center; font-size: 12.5px; color: var(--muted); background: var(--panel2); }
.float-qr img { max-width: 150px; border-radius: 8px; }
@media (max-width: 640px) {
  .float-widget { right: 14px; bottom: 14px; }
  .float-fab { width: 48px; height: 48px; }
  .float-panel { width: 220px; }
}