/* White minimal · one-tap WPS官网 */
:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f5;
  --ink: #171717;
  --muted: #6b6b6b;
  --line: rgba(23, 23, 23, 0.1);
  --accent: #171717;
  --accent-2: #404040;
  --deep: #0a0a0a;
  --panel: #ffffff;
  --dark: #171717;
  --ok: #525252;
  --soft: #eaeaea;
  --radius: 4px;
  --shadow: 0 1px 0 rgba(23, 23, 23, 0.06);
  --font-display: Candara, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: Consolas, "Courier New", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, #ffffff 0%, #fafafa 55%, #ffffff 100%);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.nav { display: flex; align-items: center; gap: 1rem; min-height: 64px; }
.container { width: min(1080px, calc(100% - 2.5rem)); margin-inline: auto; }
.logo {
  display: inline-flex; align-items: center; gap: 0.6rem;
  color: var(--ink); font-weight: 700;
}
.logo small {
  display: block; margin-top: 0.1rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
}
.logo-mark {
  width: 30px; height: 30px;
  border-radius: 2px;
  display: grid; place-items: center;
  background: var(--ink);
  color: #fff;
}
.nav-links { display: flex; gap: 1.25rem; margin-left: auto; }
.nav-links a { color: var(--muted); font-size: 0.9rem; font-weight: 500; }
.nav-links a[aria-current="page"], .nav-links a:hover { color: var(--ink); }
.nav-cta, .btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 128px; min-height: 42px; padding: 0.65rem 1.1rem;
  border-radius: 2px; border: none;
  background: var(--ink);
  color: #fff; font-weight: 700;
  white-space: nowrap; word-break: keep-all; writing-mode: horizontal-tb;
  transition: background .2s ease, transform .2s ease;
}
.nav-cta:hover, .btn:hover {
  background: #404040;
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.section-dark .btn-secondary, .cta-panel .btn-secondary, .hero .btn-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
}
.btn-small { min-width: 108px; min-height: 38px; font-size: 0.88rem; }
.menu-toggle {
  display: none; width: 40px; height: 40px; margin-left: auto;
  border: 1px solid var(--line); background: #fff; border-radius: 2px;
}
.menu-toggle span {
  display: block; width: 16px; height: 1.5px; margin: 4px auto; background: var(--ink);
}

.hero {
  padding: 5rem 0 3rem;
  position: relative;
  overflow: clip;
}
.hero.blank-surface::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0, transparent calc(50% - 0.5px), rgba(23,23,23,0.06) calc(50% - 0.5px), rgba(23,23,23,0.06) calc(50% + 0.5px), transparent calc(50% + 0.5px));
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.live-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  margin-bottom: 1.1rem; padding: 0.35rem 0.7rem;
  border-radius: 2px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.live-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ink);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.35; }
  100% { opacity: 1; }
}
.hero h1, .page-hero h1, .title {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
  color: var(--ink);
}
.hero h1 { font-size: clamp(2.7rem, 5.6vw, 4.2rem); max-width: 11ch; }
.hero h1 span, .title span, .page-hero h1 span { color: var(--accent-2); }
.hero-copy p, .intro { color: var(--muted); max-width: 38ch; }
.actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin: 1.6rem 0 1rem; }
.trust-row { display: flex; flex-wrap: wrap; gap: 0.55rem; }
.trust-row span {
  padding: 0.25rem 0.65rem;
  border-radius: 2px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--muted);
}
.hero-visual { position: relative; align-self: center; }
.app-window {
  border-radius: 2px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 24px 60px rgba(23, 23, 23, 0.06);
  overflow: hidden;
}
.window-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.55rem 0.85rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 0.68rem; color: var(--muted);
}
.window-dots { display: flex; gap: 0.3rem; }
.window-dots i {
  width: 7px; height: 7px; border-radius: 50%;
  background: #d4d4d4; display: block;
}
.hero-visual img, .collab-media img, .scene-card img, .page-media img {
  display: block; width: 100%; height: auto;
  object-fit: contain; object-position: center;
  margin: 0; padding: 0;
  min-height: 0; max-height: none;
  clip-path: none; transform: none;
}
.presence-card {
  position: absolute;
  min-width: 168px;
  padding: 0.8rem 0.95rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: 0 12px 28px rgba(23, 23, 23, 0.06);
  animation: floaty 4.8s ease-in-out infinite;
}
.presence-one { left: -0.4rem; bottom: 1.1rem; }
.presence-two { right: -0.2rem; top: 1.1rem; animation-delay: -1.5s; }
.presence-card strong { display: block; font-size: 0.9rem; }
.presence-card small { color: var(--muted); }
.presence-avatars { display: flex; gap: 0.25rem; margin-top: 0.4rem; }
.presence-avatars span {
  width: 22px; height: 22px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--ink); color: #fff; font-size: 0.65rem;
}
.sync-line {
  margin-top: 0.5rem; height: 2px; border-radius: 99px;
  background: linear-gradient(90deg, var(--ink), #a3a3a3, transparent);
  background-size: 200% 100%;
  animation: sweep 2.2s linear infinite;
}
@keyframes floaty {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}
@keyframes sweep {
  from { background-position: 0 0; }
  to { background-position: -200% 0; }
}

.one-tap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 1.2rem auto;
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
  background: #fff;
}
.one-tap span {
  padding: 1rem 0.9rem;
  text-align: center;
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.one-tap span:last-child { border-right: 0; }
.one-tap strong {
  display: block;
  color: var(--ink);
  font-size: 0.95rem;
  margin-top: 0.25rem;
  letter-spacing: 0;
  font-family: var(--font-body);
}

.quick-pulse {
  height: 36px;
  margin: 0.8rem auto 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
  background: repeating-linear-gradient(90deg, transparent 0 18px, rgba(23,23,23,0.05) 18px 19px);
}
.quick-pulse::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 22%;
  background: linear-gradient(90deg, transparent, rgba(23,23,23,0.18), transparent);
  animation: scanSweep 2s linear infinite;
}
@keyframes scanSweep {
  from { transform: translateX(-40%); }
  to { transform: translateX(420%); }
}

.blank-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.7rem;
  margin: 1.2rem auto;
}
.blank-rail article {
  padding: 1rem 1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.blank-rail b {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 0.3rem;
}
.blank-rail strong { display: block; margin-bottom: 0.25rem; }
.blank-rail span { color: var(--muted); font-size: 0.88rem; }

.start-banner {
  display: grid;
  grid-template-columns: 1.5fr 0.7fr;
  gap: 0.8rem;
  margin: 1.2rem auto;
}
.start-banner article {
  padding: 1.6rem 1.7rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.start-banner .tap {
  background: var(--ink);
  color: #fff;
  border: none;
  display: grid;
  place-items: center;
  text-align: center;
  border-radius: var(--radius);
}
.start-banner .tap b {
  display: block;
  font-size: 2rem;
  color: #fff;
  letter-spacing: 0.08em;
}
.start-banner small {
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  color: var(--muted);
  font-size: 0.7rem;
}

.start-lane {
  display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center;
  padding: 0.85rem 1rem;
  margin: 1.1rem auto;
  background: #fff;
  border-radius: 2px;
  border: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 0.76rem;
}
.start-lane .hub {
  padding: 0.35rem 0.7rem;
  border-radius: 2px;
  background: var(--ink); color: #fff;
}
.start-lane span {
  padding: 0.28rem 0.55rem;
  border-radius: 2px;
  background: var(--bg-soft);
  color: var(--muted);
}

.section { padding: 4.5rem 0; }
.section-white { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-dark {
  background: var(--ink);
  color: #fff;
}
.section-dark .intro { color: rgba(255, 255, 255, 0.72); }
.section-dark .title span { color: #d4d4d4; }
.section-dark .eyebrow { color: #a3a3a3; }
.section-head {
  display: flex; justify-content: space-between; gap: 1.5rem;
  align-items: end; margin-bottom: 2rem;
}
.eyebrow {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}
.title { font-size: clamp(2rem, 3.6vw, 2.9rem); max-width: 12ch; }
.collab-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2.4rem; align-items: center;
}
.collab-media { position: relative; border-radius: 2px; overflow: hidden; border: 1px solid var(--line); }
.floating-note {
  position: absolute; left: 1rem; bottom: 1rem;
  padding: 0.75rem 0.95rem;
  background: #fff;
  border-radius: 2px;
  border: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--ink);
}
.floating-note span { font-weight: 700; }
.check-list { padding: 0; margin: 1rem 0 0; list-style: none; }
.check-list li {
  position: relative;
  padding: 0.5rem 0 0.5rem 1.2rem;
  border-bottom: 1px solid var(--line);
}
.check-list li::before {
  content: "";
  position: absolute; left: 0; top: 1rem;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ink);
}

.download-grid, .feature-grid, .scene-grid, .pricing-grid, .quotes, .requirements, .help-grid {
  display: grid; gap: 0.9rem;
}
.download-grid { grid-template-columns: repeat(4, 1fr); }
.feature-grid { grid-template-columns: repeat(3, 1fr); }
.scene-grid, .pricing-grid, .quotes, .requirements { grid-template-columns: repeat(3, 1fr); }
.download-card, .feature-card, .scene-card, .price-card, .quote, .requirement, .help-card, .article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.download-card, .feature-card, .price-card, .quote, .requirement, .help-card { padding: 1.2rem; }
.download-card .platform, .download-row .platform, .feature-icon, .article-num {
  display: inline-grid; place-items: center;
  min-width: 40px; min-height: 40px; padding: 0 0.45rem;
  border-radius: 2px;
  background: var(--ink);
  color: #fff;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700;
}
.section-dark .download-card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.14);
  color: #fff;
}
.section-dark .download-card p { color: rgba(255, 255, 255, 0.7); }
.card-presence {
  display: inline-block;
  margin-bottom: 0.6rem;
  padding: 0.12rem 0.45rem;
  border-radius: 2px;
  background: var(--bg-soft);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
}
.feature-card { transition: border-color .2s ease; }
.feature-card:hover { border-color: rgba(23, 23, 23, 0.28); }
.feature-card h3, .download-card h3, .scene-copy h3, .price-card h3 { margin: 0.5rem 0; }
.feature-card p, .download-card p, .scene-copy p, .price-card li { color: var(--muted); }
.scene-card { overflow: hidden; display: flex; flex-direction: column; }
.scene-copy { padding: 1.1rem 1.2rem 1.3rem; }
.scene-copy small {
  font-family: var(--font-mono);
  color: var(--muted);
  letter-spacing: 0.1em;
}
.scene-graphic {
  min-height: 140px;
  background:
    linear-gradient(180deg, #f5f5f5, #ffffff),
    repeating-linear-gradient(90deg, transparent 0 22px, rgba(23,23,23,0.04) 22px 23px);
}
.price-card.featured {
  transform: translateY(-8px);
  border: 1px solid var(--ink);
  background: #fafafa;
}
.plan {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.price { font-size: 1.7rem; font-weight: 700; }
.price small { font-size: 0.82rem; color: var(--muted); font-weight: 500; }
.price-card ul { padding-left: 1.05rem; margin: 0.8rem 0 1rem; }
.quote-status {
  display: inline-block;
  margin-bottom: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.quote blockquote { margin: 0 0 1rem; font-size: 1rem; color: var(--ink); }
.person { display: flex; align-items: center; gap: 0.65rem; }
.avatar {
  width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--ink); color: #fff; font-weight: 700;
}
.person small { color: var(--muted); }
.faq-layout { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 2rem; }
.faq-item {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 2px;
  margin-bottom: 0.55rem;
  overflow: hidden;
}
.faq-question {
  width: 100%; display: flex; justify-content: space-between; gap: 1rem;
  padding: 1rem 1.05rem; border: 0; background: transparent;
  font: inherit; font-weight: 600; cursor: pointer; text-align: left;
}
.faq-answer { display: none; padding: 0 1.05rem 1rem; color: var(--muted); }
.faq-item.open .faq-answer { display: block; }
.faq-item.open .faq-question b { color: var(--ink); }
.cta-panel {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.6rem 1.8rem;
  background: var(--ink);
  color: #fff;
  border-radius: 2px;
}
.cta-panel h2 {
  margin: 0;
  font-size: clamp(1.45rem, 2.6vw, 2.1rem);
}

.site-footer {
  background: #0a0a0a;
  color: rgba(255, 255, 255, 0.68);
  padding: 3rem 0 1.3rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 1.2rem;
}
.footer-brand p { max-width: 30ch; color: rgba(255, 255, 255, 0.5); }
.footer-col h3 {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: #a3a3a3;
}
.footer-col a {
  display: block; color: rgba(255, 255, 255, 0.65);
  margin: 0.32rem 0; font-size: 0.9rem;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  margin-top: 2rem; padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.82rem; color: rgba(255, 255, 255, 0.4);
}

.page-hero {
  padding: 4.2rem 0 2.4rem;
  background: linear-gradient(180deg, #ffffff, #fafafa);
  border-bottom: 1px solid var(--line);
}
.page-hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 2rem; align-items: center;
}
.page-hero h1 { font-size: clamp(2.3rem, 5vw, 3.5rem); max-width: 12ch; }
.page-media {
  border-radius: 2px;
  border: 1px solid var(--line);
  overflow: hidden;
}
.download-rows { display: grid; gap: 0.7rem; }
.download-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem; align-items: center;
  padding: 1.1rem 1.2rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 2px;
}
.help-hero .search-box {
  display: flex; gap: 0.55rem; margin-top: 1.2rem; max-width: 540px;
}
.search-box input {
  flex: 1; min-height: 44px; padding: 0 0.95rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fff; color: var(--ink);
}
.help-layout { display: grid; grid-template-columns: 210px 1fr; gap: 1.4rem; }
.help-nav {
  position: sticky; top: 84px; align-self: start;
  padding: 1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 2px;
}
.help-nav a {
  display: block; padding: 0.42rem 0;
  color: var(--muted); border-bottom: 1px solid var(--line);
}
.help-nav a:hover { color: var(--ink); }
.help-grid { grid-template-columns: repeat(2, 1fr); }
.help-card { color: inherit; transition: border-color .2s ease; }
.help-card:hover { border-color: rgba(23, 23, 23, 0.28); }
.article-list { margin-top: 2.2rem; }
.article {
  display: grid; grid-template-columns: auto 1fr auto;
  gap: 1rem; align-items: center;
  padding: 0.95rem 1.05rem; margin-bottom: 0.6rem;
}
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .55s ease, transform .55s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .hero-grid, .collab-layout, .page-hero-grid, .faq-layout, .help-layout, .start-banner,
  .blank-rail, .download-grid, .feature-grid, .scene-grid, .pricing-grid,
  .quotes, .requirements, .help-grid, .footer-grid, .one-tap {
    grid-template-columns: 1fr 1fr;
  }
  .nav-links { display: none; }
  .menu-toggle { display: inline-block; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; left: 0; right: 0; top: 64px;
    padding: 1rem 1.2rem 1.2rem;
    background: #fff; z-index: 60;
    border-bottom: 1px solid var(--line);
  }
  .presence-card { position: static; margin-top: 0.65rem; animation: none; }
  .download-row { grid-template-columns: 1fr; }
  .section-head, .cta-panel { flex-direction: column; align-items: flex-start; }
  .price-card.featured { transform: none; }
}
@media (max-width: 640px) {
  .hero-grid, .collab-layout, .page-hero-grid, .faq-layout, .help-layout, .start-banner,
  .blank-rail, .download-grid, .feature-grid, .scene-grid, .pricing-grid,
  .quotes, .requirements, .help-grid, .footer-grid, .one-tap {
    grid-template-columns: 1fr;
  }
  .actions .btn, .download-card .btn, .download-row .btn {
    width: 100%;
    white-space: nowrap; word-break: keep-all; writing-mode: horizontal-tb;
  }
}

/* Hero media integrity — keep at end */
.hero-grid { align-items: center !important; }
.hero-visual, .hero-visual .app-window {
  align-self: center !important;
  height: auto !important;
  padding: 0 !important;
  margin-top: 0 !important;
  margin-bottom: 0 !important;
  overflow: visible !important;
}
.hero-visual img, .app-window img {
  display: block !important;
  width: 100% !important;
  height: auto !important;
  object-fit: contain !important;
  object-position: center !important;
  margin: 0 !important;
  padding: 0 !important;
  min-height: 0 !important;
  max-height: none !important;
  clip-path: none !important;
  transform: none !important;
}