:root {
  --primary: #2b6cff;
  --primary-dark: #1a4fd6;
  --navy: #0b1f4d;
  --navy-2: #132a63;
  --text: #1c2434;
  --muted: #667085;
  --bg: #f5f7fb;
  --card: #fff;
  --line: #e6ebf5;
  --ok: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
  --shadow: 0 12px 40px rgba(15, 40, 90, .08);
  --radius: 16px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 22px; border-radius: 10px; border: 0; cursor: pointer;
  font-size: 15px; font-weight: 600; transition: .2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.25); }
.btn-ghost:hover { background: #fff; color: var(--primary); }
.btn-line { background: #fff; color: var(--primary); border: 1px solid #c9d7ff; }
.btn-line:hover { border-color: var(--primary); }
.btn-dark { background: #000; color: #fff; }
.btn-dark:hover { background: #111; }

.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; height: 72px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--navy); white-space: nowrap; }
.logo img { width: 36px; height: 36px; }
.nav { display: flex; align-items: center; gap: 4px; margin-left: 12px; flex: 1; }
.nav a { padding: 8px 12px; border-radius: 8px; color: #3d4a63; font-size: 14px; }
.nav a:hover, .nav a.on { color: var(--primary); background: #eef3ff; }
.header-actions { display: flex; gap: 10px; align-items: center; }
.demo-mask {
  position: fixed; inset: 0; z-index: 80;
  background: rgba(6, 14, 36, .72);
  backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.demo-mask[hidden] { display: none; }
.demo-dialog {
  position: relative; width: min(860px, 100%);
  background: linear-gradient(180deg, #0b1f4d 0%, #10285f 42%, #fff 42%, #fff 100%);
  border-radius: 24px; overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
  animation: demoIn .28s ease;
}
@keyframes demoIn {
  from { opacity: 0; transform: translateY(16px) scale(.98); }
  to { opacity: 1; transform: none; }
}
.demo-close {
  position: absolute; right: 16px; top: 14px; z-index: 2;
  width: 36px; height: 36px; border: 0; border-radius: 50%;
  background: rgba(255,255,255,.12); color: #fff; font-size: 24px; cursor: pointer; line-height: 1;
}
.demo-close:hover { background: rgba(255,255,255,.22); }
.demo-head { padding: 36px 36px 22px; color: #fff; text-align: center; }
.demo-kicker {
  display: inline-block; letter-spacing: .18em; font-size: 11px;
  color: #9ec2ff; margin-bottom: 8px;
}
.demo-head h3 { margin: 0 0 8px; font-size: 28px; }
.demo-head p { margin: 0; color: rgba(255,255,255,.75); font-size: 14px; }
.demo-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 8px 28px 32px; }
.demo-card {
  background: #fff; border: 1px solid var(--line); border-radius: 18px;
  padding: 24px 22px 22px; text-align: center;
  box-shadow: 0 10px 28px rgba(15,40,90,.06);
}
.demo-card-tag {
  display: inline-block; background: #eef3ff; color: var(--primary);
  font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 99px; margin-bottom: 10px;
}
.demo-card h4 { margin: 0 0 6px; font-size: 20px; color: var(--navy); }
.demo-card > p { margin: 0 0 16px; color: var(--muted); font-size: 13px; }
.demo-qrbox {
  width: 188px; height: 188px; margin: 0 auto 12px; padding: 12px;
  border-radius: 16px; background: linear-gradient(135deg, #eef3ff, #fff);
  border: 1px solid #dbe4ff;
}
.demo-qrbox img { width: 100%; height: 100%; object-fit: contain; }
.demo-hint { display: block; font-size: 12px; color: #98a2b3; }
.demo-admin-visual {
  height: 188px; margin: 0 auto 16px; border-radius: 16px;
  background: linear-gradient(160deg, #0b1f4d, #2b6cff);
  color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center;
  position: relative;
}
.demo-admin-visual i {
  position: absolute; top: 14px; width: 8px; height: 8px; border-radius: 50%; background: #ff5f57;
  left: 16px;
}
.demo-admin-visual i:nth-child(2) { left: 30px; background: #febc2e; }
.demo-admin-visual i:nth-child(3) { left: 44px; background: #28c840; }
.demo-admin-visual em { font-style: normal; font-size: 22px; font-weight: 800; }
.demo-admin-visual small { margin-top: 8px; color: rgba(255,255,255,.75); }
.demo-card-admin .btn { width: 100%; background: #000; color: #fff; }
.demo-card-admin .btn:hover { background: #111; }
.nav-toggle { display: none; width: 40px; height: 40px; border: 0; background: none; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--navy); margin: 5px auto; }

.hero {
  background:
    radial-gradient(800px 400px at 85% 10%, rgba(80,140,255,.35), transparent 50%),
    linear-gradient(135deg, #071633 0%, #12357a 48%, #2b6cff 100%);
  color: #fff; padding: 88px 0 96px; overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero-kicker { display: inline-block; padding: 4px 12px; border-radius: 99px; background: rgba(255,255,255,.14); font-size: 13px; margin-bottom: 16px; }
.hero h1 { font-size: 46px; line-height: 1.2; margin: 0 0 16px; }
.hero h1 em { font-style: normal; color: #9ec2ff; }
.hero p { color: rgba(255,255,255,.82); font-size: 17px; max-width: 560px; }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 28px; margin-top: 36px; color: rgba(255,255,255,.78); font-size: 13px; }
.hero-meta b { display: block; color: #fff; font-size: 22px; }
.hero-panel {
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.16);
  border-radius: 20px; padding: 22px; backdrop-filter: blur(10px);
}
.fake-ui { background: #0d1b3d; border-radius: 14px; min-height: 280px; padding: 16px; }
.fake-bar { display: flex; gap: 6px; margin-bottom: 14px; }
.fake-bar i { width: 8px; height: 8px; border-radius: 50%; background: #ff5f57; }
.fake-bar i:nth-child(2) { background: #febc2e; }
.fake-bar i:nth-child(3) { background: #28c840; }
.fake-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.fake-card { background: rgba(255,255,255,.08); border-radius: 10px; padding: 14px; color: #d7e3ff; font-size: 13px; }
.fake-card b { display: block; color: #fff; font-size: 20px; margin-bottom: 4px; }

.section { padding: 80px 0; }
.section.gray { background: var(--bg); }
.section-head { text-align: center; margin-bottom: 42px; }
.section-head h2 { font-size: 32px; margin: 0 0 10px; }
.section-head p { margin: 0; color: var(--muted); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.feature .ico { width: 44px; height: 44px; border-radius: 12px; background: #eef3ff; color: var(--primary); display: flex; align-items: center; justify-content: center; font-weight: 800; margin-bottom: 14px; }
.feature h3 { margin: 0 0 8px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }

.ends { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.end-item { background: #fff; border-radius: var(--radius); padding: 28px 20px; text-align: center; border: 1px solid var(--line); }
.end-item strong { display: block; margin: 10px 0 6px; font-size: 18px; }
.end-item span { color: var(--muted); font-size: 13px; }

.func-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.func { background: #fff; border-radius: 12px; padding: 18px; border: 1px solid var(--line); }
.func b { display: block; margin-bottom: 6px; }
.func span { color: var(--muted); font-size: 13px; }

.plugin-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.plugin-card, .pack-card, .log-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow); display: flex; flex-direction: column;
}
.plugin-top { display: flex; justify-content: space-between; gap: 8px; margin-bottom: 10px; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 12px; background: #eef3ff; color: var(--primary); }
.tag.hot { background: #fff1f2; color: #e11d48; }
.plugin-card h3, .pack-card h3 { margin: 0 0 8px; font-size: 18px; }
.plugin-card p, .pack-card p { margin: 0 0 16px; color: var(--muted); font-size: 13px; min-height: 58px; }
.plugin-card .price { margin-top: auto; color: #e11d48; font-size: 20px; font-weight: 800; }
.plugin-card .price s { color: #98a2b3; font-size: 13px; font-weight: 400; margin-left: 6px; }

.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.price-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 32px 28px; position: relative; }
.price-card.featured { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-6px); }
.price-card .mark { position: absolute; top: 16px; right: 16px; background: var(--primary); color: #fff; font-size: 12px; padding: 2px 8px; border-radius: 99px; }
.price-card h3 { margin: 0 0 8px; }
.price-card .num { font-size: 40px; font-weight: 800; color: var(--navy); margin: 10px 0 18px; }
.price-card .num span { font-size: 14px; color: var(--muted); font-weight: 500; }
.price-card ul { margin: 0 0 24px; padding: 0; list-style: none; color: #445068; }
.price-card li { padding: 6px 0 6px 18px; position: relative; }
.price-card li:before { content: "✓"; position: absolute; left: 0; color: var(--primary); }

.home-logs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.log-card time { color: var(--muted); font-size: 13px; }

.cta {
  background: linear-gradient(135deg, #12357a, #2b6cff);
  color: #fff; border-radius: 24px; padding: 48px; display: flex; justify-content: space-between; align-items: center; gap: 20px;
}
.cta h2 { margin: 0 0 8px; }
.cta p { margin: 0; color: rgba(255,255,255,.8); }

.page-banner {
  background: linear-gradient(135deg, #0b1f4d, #2b6cff);
  color: #fff; padding: 56px 0 48px;
}
.page-banner h1 { margin: 0 0 8px; font-size: 34px; }
.page-banner p { margin: 0; color: rgba(255,255,255,.8); }

.plugin-legal-wrap {
  background: var(--bg);
  padding: 12px 0;
}
.plugin-legal-bar {
  display: flex;
  align-items: stretch;
  background: #fff7ed;
  color: #c2410c;
  border: 1px solid #fed7aa;
  border-radius: 12px;
  min-height: 42px;
  overflow: hidden;
}
.plugin-legal-bar__badge {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  background: #ffedd5;
  color: #c2410c;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .04em;
  white-space: nowrap;
  border-right: 1px solid #fed7aa;
}
.plugin-legal-bar__track {
  flex: 1;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 24px, #000 calc(100% - 24px), transparent);
}
.plugin-legal-bar__run {
  display: flex;
  width: max-content;
  align-items: center;
  gap: 64px;
  animation: pluginLegalScroll 36s linear infinite;
}
.plugin-legal-bar__run span {
  padding: 10px 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  white-space: nowrap;
}
@keyframes pluginLegalScroll {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-50% - 32px)); }
}
.plugin-legal-bar:hover .plugin-legal-bar__run {
  animation-play-state: paused;
}
.section--after-legal { padding-top: 16px; }
@media (prefers-reduced-motion: reduce) {
  .plugin-legal-bar__run { animation: none; }
}

.pack-list { display: grid; gap: 16px; }
.pack-row {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px; display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: center;
}
.pack-row .meta { color: var(--muted); font-size: 13px; display: flex; gap: 16px; flex-wrap: wrap; }

.auth-hero {
  background:
    radial-gradient(700px 360px at 88% 8%, rgba(80,140,255,.38), transparent 52%),
    linear-gradient(135deg, #071633 0%, #12357a 50%, #2b6cff 100%);
  color: #fff; padding: 72px 0 108px; overflow: hidden;
}
.auth-hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
.auth-hero h1 { font-size: 44px; line-height: 1.2; margin: 0 0 16px; }
.auth-hero p { margin: 0; color: rgba(255,255,255,.82); font-size: 16px; max-width: 560px; }
.auth-hero-meta { display: flex; gap: 28px; margin-top: 32px; color: rgba(255,255,255,.78); font-size: 13px; }
.auth-hero-meta b { display: block; color: #fff; font-size: 16px; margin-bottom: 4px; }
.auth-seal { display: flex; justify-content: center; }
.auth-seal-ring {
  width: 220px; height: 220px; border-radius: 50%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: radial-gradient(circle at 35% 30%, rgba(255,255,255,.18), transparent 48%),
    rgba(255,255,255,.08);
  border: 2px solid rgba(158,194,255,.55);
  box-shadow: 0 0 0 14px rgba(255,255,255,.06), 0 24px 60px rgba(0,0,0,.25);
  letter-spacing: .28em;
}
.auth-seal-ring span { font-size: 12px; color: #9ec2ff; }
.auth-seal-ring strong { letter-spacing: .12em; font-size: 28px; margin: 10px 0 6px; }
.auth-seal-ring em { font-style: normal; font-size: 11px; color: rgba(255,255,255,.7); }
.auth-section { padding-top: 0; background: linear-gradient(180deg, #f5f7fb 0 220px, #fff 220px); }
.auth-section > .container { padding-top: 48px; }
.auth-panel {
  max-width: 860px; margin: -72px auto 48px; background: #fff;
  border-radius: 24px; box-shadow: 0 24px 70px rgba(15,40,90,.14);
  padding: 36px 40px 32px; position: relative; border: 1px solid rgba(219,228,255,.8);
}
.auth-panel-head { margin-bottom: 22px; }
.auth-panel-head h2 { margin: 0 0 6px; font-size: 24px; color: var(--navy); }
.auth-panel-head p { margin: 0; color: var(--muted); font-size: 14px; }
.auth-form { display: flex; gap: 12px; }
.auth-input {
  flex: 1; display: flex; align-items: center; gap: 10px;
  height: 56px; border: 1px solid #d7deee; border-radius: 14px; padding: 0 16px;
  background: #f8fafc; transition: .2s;
}
.auth-input:focus-within { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 4px rgba(43,108,255,.12); }
.auth-input-ico { color: var(--primary); font-weight: 800; font-size: 16px; }
.auth-input input { flex: 1; height: 100%; border: 0; background: transparent; font-size: 16px; outline: none; }
.auth-form .btn { height: 56px; padding: 0 28px; border-radius: 14px; font-size: 16px; }
.auth-examples { margin-top: 14px; color: var(--muted); font-size: 13px; }
.auth-examples button {
  border: 1px dashed #c9d7ff; background: #eef3ff; color: var(--primary);
  border-radius: 99px; padding: 3px 12px; margin-left: 6px; cursor: pointer; font-size: 13px;
}
.auth-examples button:hover { background: var(--primary); color: #fff; border-style: solid; }
.auth-result { margin-top: 22px; }
.auth-idle, .auth-msg {
  border-radius: 16px; padding: 22px 24px; background: #f8fafc; color: var(--muted);
}
.auth-idle strong, .auth-msg strong { display: block; color: var(--navy); margin-bottom: 4px; font-size: 16px; }
.auth-idle p, .auth-msg p { margin: 0; font-size: 14px; }
.auth-result.loading .auth-idle, .auth-result.loading .auth-msg { color: var(--primary); }
.auth-result.err .auth-msg { background: #fef2f2; color: #991b1b; }
.auth-result.err .auth-msg strong { color: #991b1b; }
.auth-cert {
  position: relative;
  border-radius: 18px; padding: 28px 28px 22px;
  background: linear-gradient(180deg, #f4f8ff 0%, #fff 42%);
  border: 1px solid #dbe4ff;
}
.auth-cert:before {
  content: ""; position: absolute; inset: 10px; border-radius: 12px;
  border: 1px dashed rgba(43,108,255,.22); pointer-events: none;
}
.auth-cert.ok { background: linear-gradient(180deg, #ecfdf3 0%, #fff 40%); border-color: #bbf7d0; }
.auth-cert.ok:before { border-color: rgba(22,163,74,.22); }
.auth-cert.warn { background: linear-gradient(180deg, #fffbeb 0%, #fff 40%); border-color: #fde68a; }
.auth-cert.warn:before { border-color: rgba(217,119,6,.22); }
.auth-cert-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.auth-cert-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 99px; font-size: 12px; font-weight: 700;
  background: #eef3ff; color: var(--primary);
}
.auth-cert.ok .auth-cert-badge { background: #dcfce7; color: #166534; }
.auth-cert.warn .auth-cert-badge { background: #fef3c7; color: #92400e; }
.auth-cert-stamp {
  width: 72px; height: 72px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800; letter-spacing: .12em;
  border: 3px solid currentColor; transform: rotate(-12deg); opacity: .85;
}
.auth-cert.ok .auth-cert-stamp { color: #16a34a; }
.auth-cert.warn .auth-cert-stamp { color: #d97706; }
.auth-cert-domain { font-size: 28px; font-weight: 800; color: var(--navy); margin: 18px 0 8px; letter-spacing: .02em; }
.auth-cert > p { margin: 0 0 18px; color: var(--muted); font-size: 14px; }
.auth-cert-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.auth-cert-grid div {
  background: rgba(255,255,255,.86); border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 14px;
}
.auth-cert-grid em { display: block; font-style: normal; color: #98a2b3; font-size: 12px; margin-bottom: 4px; }
.auth-cert-grid b { font-size: 15px; color: var(--text); word-break: break-all; }
.auth-pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 48px; }
.auth-pillar {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.auth-pillar .ico {
  width: 44px; height: 44px; border-radius: 12px; background: #eef3ff; color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-weight: 800; margin-bottom: 14px;
}
.auth-pillar h3 { margin: 0 0 8px; font-size: 18px; }
.auth-pillar p { margin: 0; color: var(--muted); font-size: 14px; }

.doc-wrap { display: grid; grid-template-columns: 260px 1fr; gap: 24px; align-items: start; }
.doc-side { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 16px; position: sticky; top: 92px; }
.doc-side a { display: block; padding: 7px 10px; border-radius: 8px; color: #445068; font-size: 14px; }
.doc-side a.on { background: #eef3ff; color: var(--primary); }
.doc-side h4 { margin: 12px 0 6px; font-size: 13px; color: #98a2b3; }
.doc-main { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 36px 40px; min-height: 520px; }
.doc-main h1 { margin-top: 0; }
.doc-main h2 { margin-top: 28px; }
.doc-main code { background: #eef3ff; padding: 1px 6px; border-radius: 4px; color: var(--primary-dark); }
.doc-tabs { display: flex; gap: 10px; margin-bottom: 18px; }
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
.filter-bar a, .filter-bar span { padding: 6px 12px; border-radius: 99px; background: #fff; border: 1px solid var(--line); font-size: 13px; }
.filter-bar a.on { background: var(--primary); color: #fff; border-color: var(--primary); }
.filter-bar input { height: 36px; border: 1px solid var(--line); border-radius: 99px; padding: 0 14px; }

.detail-hero { display: grid; grid-template-columns: 1fr 320px; gap: 24px; }
.buy-box { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 24px; height: fit-content; }
.buy-box .price { font-size: 32px; color: #e11d48; font-weight: 800; }
.rich { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 28px; margin-top: 20px; }

.timeline { position: relative; padding-left: 24px; }
.timeline:before { content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 2px; background: #dbe4ff; }
.time-item { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 22px; margin-bottom: 16px; }
.time-item:before { content: ""; position: absolute; left: -22px; top: 26px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary); }

.about-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; }
.contact-card { background: #fff; border-radius: 16px; padding: 24px; border: 1px solid var(--line); }
.contact-card p { margin: 8px 0; color: #445068; }

.site-footer { background: #071226; color: #b7c2d8; padding: 48px 0 20px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; }
.site-footer h4 { color: #fff; margin: 0 0 12px; }
.site-footer a { display: block; color: #b7c2d8; padding: 4px 0; }
.site-footer a:hover { color: #fff; }
.copy { border-top: 1px solid #1b2a4a; margin-top: 28px; padding-top: 16px; font-size: 13px; color: #7d8aa8; }

.cs-float {
  position: fixed; right: 18px; top: 42%; z-index: 50;
  width: 64px; background: #fff; border-radius: 14px;
  box-shadow: 0 10px 30px rgba(15,40,90,.16); overflow: visible;
  border: 1px solid var(--line);
}
.cs-main {
  background: var(--primary); color: #fff; text-align: center;
  font-size: 11px; font-weight: 700; padding: 12px 2px; line-height: 1.2;
  border-radius: 14px 14px 0 0; white-space: nowrap;
}
.cs-item {
  display: block; position: relative; text-align: center;
  padding: 12px 6px; color: var(--navy); font-size: 13px; font-weight: 600;
  border-top: 1px solid var(--line); cursor: pointer;
}
.cs-item:hover, .cs-item.open { color: var(--primary); background: #f5f8ff; }
.cs-pop {
  display: none; position: absolute; right: 72px; top: 50%; transform: translateY(-50%);
  min-width: 180px; background: #fff; border: 1px solid var(--line);
  border-radius: 12px; box-shadow: var(--shadow); padding: 14px 16px; text-align: center;
  color: var(--text);
}
.cs-pop:after {
  content: ""; position: absolute; right: -6px; top: 50%; margin-top: -6px;
  border: 6px solid transparent; border-left-color: #fff;
}
.cs-item:hover .cs-pop, .cs-item.open .cs-pop { display: block; }
.cs-pop b { display: block; margin-bottom: 6px; font-size: 14px; }
.cs-pop em { display: block; font-style: normal; color: var(--primary); font-size: 18px; font-weight: 800; }
.cs-pop small { display: block; margin-top: 6px; color: var(--muted); }
.cs-pop-qr { min-width: 168px; }
.cs-pop-qr img { width: 132px; height: 132px; object-fit: contain; margin: 8px 0; background: #fff; }

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 72px; background: #fff; flex-direction: column; padding: 12px; border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .hero-grid, .feature-grid, .ends, .func-grid, .plugin-grid, .price-grid, .home-logs, .doc-wrap, .detail-hero, .about-grid, .footer-grid, .auth-hero-grid, .auth-pillars, .auth-cert-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .cta, .pack-row, .auth-form { display: block; }
  .auth-form .btn { width: 100%; margin-top: 10px; }
  .auth-hero { padding: 48px 0 92px; }
  .auth-hero h1 { font-size: 32px; }
  .auth-hero-meta { flex-direction: column; gap: 14px; }
  .auth-seal { display: none; }
  .auth-section > .container { padding-top: 32px; }
  .auth-panel { padding: 24px 18px; margin-top: -56px; }
  .price-card.featured { transform: none; }
  .doc-side { position: static; }
  .cs-float { right: 8px; top: auto; bottom: 80px; width: 56px; }
  .cs-pop { right: 64px; }
  .demo-cards { grid-template-columns: 1fr; padding: 8px 16px 22px; }
  .demo-head { padding: 28px 20px 12px; }
}