:root {
  --text: #091a33;
  --muted: #60718a;
  --line: rgba(97, 149, 214, 0.18);
  --blue: #0b78ff;
  --blue-2: #005de8;
  --wps: #ff4a3d;
  --wps-2: #ff7d34;
  --shadow: 0 24px 60px rgba(27, 82, 149, 0.10), 0 8px 22px rgba(14, 29, 56, 0.06);
  --shadow-soft: 0 18px 42px rgba(27, 82, 149, 0.08), 0 6px 16px rgba(14, 29, 56, 0.05);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --container: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 78% 10%, rgba(11,120,255,.12), transparent 24%),
    radial-gradient(circle at 20% 25%, rgba(121,178,255,.11), transparent 24%),
    linear-gradient(180deg,#fff 0%,#f7fbff 48%,#f9fcff 100%);
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
.page-shell { min-height: 100vh; overflow-x: hidden; }
.container { width: 100%; max-width: calc(var(--container) + 48px); margin: 0 auto; padding-inline: 24px; }

/* Header */
.site-header { padding: 24px 0 10px; position: relative; z-index: 2; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand-lockup { display: flex; align-items: center; gap: 14px; min-width: 0; flex-wrap: wrap; }
.logo-ai { height: 38px; width: auto; }
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(114,165,233,.28);
  box-shadow: 0 12px 28px rgba(26,91,177,.08);
  font-size: 14px;
  font-weight: 700;
  color: #1e60d4;
  white-space: nowrap;
  backdrop-filter: blur(8px);
}
.status-dot { width: 10px; height: 10px; border-radius: 50%; background: linear-gradient(135deg,#63bcff,#006bff); box-shadow: 0 0 0 5px rgba(11,120,255,.12); }
.status-pill:focus-visible, .btn:focus-visible, .support-link:focus-visible { outline: 3px solid rgba(11,120,255,.22); outline-offset: 4px; }

/* Hero */
.hero-section { padding: 34px 0 22px; }
.hero-layout { display: grid; grid-template-columns: minmax(0,1fr) minmax(420px,600px); gap: 28px; align-items: center; }
.hero-copy { max-width: 580px; padding: 10px 0 12px; }
.hero-copy h1 { margin: 0; letter-spacing: -.05em; font-weight: 900; }
.hero-line { display: block; }
.hero-line-primary { font-size: clamp(50px,5vw,70px); line-height: .98; color: #0b1731; }
.hero-line-secondary { margin-top: 10px; font-size: clamp(34px,3.2vw,48px); line-height: 1.06; color: var(--blue); }
.hero-summary { margin: 26px 0 0; font-size: 22px; line-height: 1.42; color: #2f4468; max-width: 420px; }
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; min-height: 418px; }
.hero-visual::before { content: ""; position: absolute; inset: auto 12% 8% 12%; height: 44%; background: radial-gradient(ellipse,rgba(12,120,255,.17),transparent 65%); filter: blur(24px); z-index: -1; }
.hero-visual img { width: min(100%,660px); height: auto; }


/* Product cards */
.products-section { padding: 8px 0 0; }
.products-grid { display: grid; grid-template-columns: minmax(0,1.08fr) minmax(350px,.92fr); gap: 24px; align-items: stretch; }
.surface-card { display: flex; flex-direction: column; background: rgba(255,255,255,.84); border: 1px solid var(--line); border-radius: var(--radius-xl); box-shadow: var(--shadow); backdrop-filter: blur(14px); overflow: hidden; }
.surface-head { height: 62px; flex: 0 0 62px; padding: 16px 22px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg,var(--blue),var(--blue-2)); color: #fff; font-size: clamp(20px,2vw,28px); font-weight: 800; letter-spacing: -.02em; }
.assistant-card, .wps-card-panel { min-height: 380px; }

/* AI MOUSE Smart Assistant */
.assistant-options { flex: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding: 22px; align-items: stretch; }
.option-card { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 22px 18px 18px; text-align: center; border-radius: 22px; background: linear-gradient(180deg,rgba(255,255,255,.97),rgba(245,250,255,.88)); border: 1px solid rgba(90,145,218,.18); box-shadow: inset 0 1px 0 rgba(255,255,255,.96), 0 12px 30px rgba(35,96,170,.07); }
.option-icon { width: 88px; height: 88px; border-radius: 50%; display: grid; place-items: center; margin: 0 auto 16px; background: linear-gradient(180deg,#fff,#eef6ff); border: 1px solid rgba(104,154,223,.18); box-shadow: 0 14px 30px rgba(11,120,255,.10); padding: 16px; }
.option-icon img { width: 58px; height: 58px; object-fit: contain; }
.option-card h3 { margin: 0 0 10px; font-size: 22px; letter-spacing: -.03em; }
.option-card p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.45; min-height: 46px; }
.option-card .btn { margin-top: 18px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 22px; border-radius: 12px; font-weight: 800; font-size: 15px; letter-spacing: -.01em; transition: transform .18s ease, box-shadow .18s ease, filter .18s ease; white-space: nowrap; }
.btn:hover { transform: translateY(-2px); filter: saturate(1.02); }
.btn-primary { background: linear-gradient(135deg,var(--blue),var(--blue-2)); color: #fff; box-shadow: 0 14px 30px rgba(11,120,255,.24); }
.btn-wps { background: linear-gradient(135deg,var(--wps),var(--wps-2)); color: #fff; box-shadow: 0 14px 30px rgba(255,93,56,.24); }
/* 开发中按钮禁用样式 */
.btn-primary[href="javascript:void(0);"] {
  pointer-events: none; /* 彻底禁止点击 */
  opacity: 0.7; /* 半透明 */
  cursor: not-allowed; /* 禁止图标 */
}

/* WPS Office */
.wps-card-panel { border-color: rgba(255,110,79,.14); }
.wps-showcase { position: relative; flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 28px 28px 34px; background: radial-gradient(circle at 80% 80%,rgba(255,94,64,.08),transparent 25%); overflow: hidden; }
.wps-showcase::before { content: ""; position: absolute; inset: auto 12px 12px auto; width: 200px; height: 200px; border-radius: 42px; background: linear-gradient(180deg,rgba(255,255,255,.52),rgba(255,246,242,.18)); filter: blur(10px); opacity: .62; }
.wps-hero-icon { position: relative; z-index: 1; width: 135px; height: 135px; border-radius: 26px; object-fit: contain; margin-bottom: 0px; filter: drop-shadow(0 18px 34px rgba(255,96,73,.18)); }
.wps-showcase p { position: relative; z-index: 1; margin: 0; color: #66758d; font-size: 18px; line-height: 1.45; }
.wps-showcase .btn { position: relative; z-index: 1; margin-top: 26px; margin-bottom: 0; }
.wps-watermark { position: absolute; right: -8px; bottom: -14px; width: 180px; height: 180px; opacity: .42; pointer-events: none; z-index: 0; object-fit: contain; }

/* Features */
.features-section { padding: 22px 0 0; }
.features-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; align-items: stretch; }
.feature-card { min-height: 142px; display: grid; grid-template-columns: 56px 1fr; gap: 14px; align-items: center; padding: 20px; border-radius: 22px; background: rgba(255,255,255,.84); border: 1px solid rgba(99,149,218,.16); box-shadow: var(--shadow-soft); }
.feature-icon { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; background: linear-gradient(180deg,#fff,#edf6ff); color: var(--blue); box-shadow: 0 10px 24px rgba(11,120,255,.12); }
.feature-card h3 { margin: 0 0 6px; font-size: 17px; line-height: 1.12; letter-spacing: -.02em; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.42; }

/* Support */
.support-section { padding: 22px 0 0; }
.support-grid { display: grid; grid-template-columns: 112px minmax(260px,1fr) minmax(190px,.65fr); gap: 22px; align-items: center; width: 100%; margin: 0 0 28px; padding: 20px 24px; border-radius: var(--radius-lg); background: rgba(255,255,255,.86); border: 1px solid rgba(99,149,218,.16); box-shadow: var(--shadow); }
.support-qr { width: 96px; height: 96px; border-radius: 22px; box-shadow: 0 10px 24px rgba(11,120,255,.08); }
.support-intro h3, .support-link strong { display: block; margin: 0 0 8px; font-size: 18px; letter-spacing: -.02em; }
.support-intro p, .support-link span { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.45; }
.support-link { min-height: 74px; padding-left: 22px; border-left: 1px dashed rgba(87,135,206,.28); display: flex; flex-direction: column; justify-content: center; transition: color .18s ease; }
.support-link:hover strong, .support-link:hover span { color: var(--blue); }

/* Footer */
.site-footer { padding: 0 0 34px; }
.footer-inner { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; }
.site-footer p { margin: 0; color: #7c8aa0; font-size: 14px; }
.icp-link { color: #7c8aa0; font-size: 14px; transition: color .18s ease; }
.icp-link:hover { color: var(--blue); }

@media (max-width:1120px) {
  .hero-layout { grid-template-columns: 1fr; gap: 12px; }
  .hero-copy { max-width: none; text-align: center; }
  .hero-summary { margin-inline: auto; }
  .hero-visual { min-height: 360px; }
  .products-grid { grid-template-columns: 1fr; align-items: start; }
  .assistant-card, .wps-card-panel { min-height: auto; }
  .wps-showcase { padding-block: 32px; }
  .features-grid { grid-template-columns: repeat(2,1fr); }
  .support-grid { grid-template-columns: 112px minmax(220px,1fr) minmax(180px,.65fr); }
}

@media (max-width:820px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .status-pill { white-space: normal; }
  .hero-section { padding-top: 28px; }
  .hero-copy { text-align: left; }
  .hero-line-primary { font-size: clamp(42px,10vw,56px); }
  .hero-line-secondary { font-size: clamp(28px,7vw,38px); }
  .hero-summary { margin-inline: 0; font-size: 18px; }
  .assistant-options { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: auto; }
  .support-grid { grid-template-columns: 92px 1fr; gap: 16px; padding: 18px; }
  .support-qr { width: 84px; height: 84px; }
  .support-link { grid-column: 1 / -1; border-left: 0; border-top: 1px dashed rgba(87,135,206,.28); padding: 14px 0 0; min-height: auto; }
}

@media (max-width:640px) {
  .container { padding-inline: 14px; max-width: calc(var(--container) + 28px); }
  .site-header { padding-top: 16px; }
  .logo-ai { height: 34px; }
  .brand-lockup { gap: 10px; }
  .hero-visual { min-height: 260px; }
  .surface-head { height: 54px; flex-basis: 54px; font-size: 18px; padding: 14px 16px; }
  .assistant-options { padding: 14px; gap: 14px; }
  .option-card { padding: 22px 16px; }
  .wps-showcase { padding: 24px 18px 28px; }
  .wps-hero-icon { width: 96px; height: 96px; margin-bottom: 20px; }
  .wps-watermark { width: 132px; height: 132px; right: -10px; bottom: -14px; }
  .feature-card { padding: 18px; }
}