@charset "UTF-8";

:root {
  --primary: #ff6a3d;
  --accent: #ff2e63;
  --gradient: linear-gradient(135deg, #ff7e3f 0%, #ff2e63 100%);
  --ink: #2b2622;
  --muted: #6b645f;
  --line: #f1e4da;
  --tint: #fff4ee;
  --dark: #211913;
  --maxw: 1160px;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.7;
  background: #fff;
  -webkit-font-smoothing: antialiased;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Helvetica Neue", "Microsoft YaHei", Tahoma, Simsun, sans-serif;
}
img {
  max-width: 100%;
  vertical-align: top;
}
a {
  color: inherit;
  text-decoration: none;
}
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Top bar ---------- */
.topbar {
  background: var(--gradient);
  color: #fff;
  text-align: center;
  font-size: 13px;
  letter-spacing: 1px;
  padding: 8px 12px;
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.25s ease;
}
.header.scrolled {
  box-shadow: 0 8px 24px rgba(120, 50, 20, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}
.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  background: var(--gradient);
  box-shadow: 0 6px 16px rgba(255, 78, 80, 0.35);
}
.logo-text {
  font-size: 19px;
  letter-spacing: 0.5px;
  color: var(--primary);
}
.nav {
  display: flex;
  gap: 28px;
}
.nav-link {
  font-size: 15px;
  color: var(--muted);
  padding: 6px 0;
  transition: color 0.2s ease;
}
.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  text-align: center;
  padding: 76px 0 0;
  background: radial-gradient(900px 420px at 50% -10%, #fff0e8, transparent 60%),
    #fffaf7;
  overflow: hidden;
}
.hero-inner {
  position: relative;
  z-index: 1;
}
.hero-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--accent);
  border: 1px solid rgba(255, 46, 99, 0.4);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero-title {
  font-size: clamp(28px, 5vw, 50px);
  line-height: 1.2;
  margin: 0 0 14px;
  font-weight: 800;
}
.hero-slogan {
  font-size: clamp(18px, 2.6vw, 24px);
  margin: 0 0 16px;
  font-weight: 600;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  max-width: 620px;
  margin: 0 auto 30px;
  color: var(--muted);
  font-size: 16px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 46px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-solid {
  color: #fff;
  background: var(--gradient);
  box-shadow: 0 12px 28px rgba(255, 78, 80, 0.32);
}
.btn-solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(255, 78, 80, 0.42);
}
.btn-line {
  color: var(--primary);
  border-color: rgba(255, 106, 61, 0.45);
  background: #fff;
}
.btn-line:hover {
  background: var(--tint);
  transform: translateY(-2px);
}
.btn-light {
  color: var(--accent);
  background: #fff;
}
.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.15);
}

/* 悬浮浏览器预览 */
.browser {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin: 0 auto -70px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 30px 60px rgba(120, 50, 20, 0.16);
  overflow: hidden;
  text-align: left;
}
.browser-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 40px;
  padding: 0 14px;
  background: var(--tint);
  border-bottom: 1px solid var(--line);
}
.browser-bar .dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.browser-url {
  margin-left: 10px;
  font-size: 12px;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 14px;
}
.browser-body {
  display: flex;
  gap: 18px;
  padding: 24px;
  flex-wrap: wrap;
}
.bk-logo {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--gradient);
  flex: 0 0 auto;
}
.bk-lines {
  flex: 1 1 200px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}
.bk-line {
  display: block;
  height: 10px;
  border-radius: 6px;
  background: #f0e4da;
}
.bk-line.w70 { width: 70%; }
.bk-line.w90 { width: 90%; }
.bk-line.w50 { width: 50%; }
.bk-pill {
  width: 90px;
  height: 22px;
  border-radius: 999px;
  background: var(--gradient);
  margin-top: 4px;
}
.bk-cards {
  flex: 1 1 100%;
  display: flex;
  gap: 12px;
}
.bk-card {
  flex: 1;
  height: 70px;
  border-radius: 12px;
  background: linear-gradient(180deg, #fff4ee, #ffe7dc);
  border: 1px solid var(--line);
}

/* ---------- Section ---------- */
.section {
  padding: 120px 0 88px;
}
.section-tint {
  background: var(--tint);
}
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}
.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(24px, 3.4vw, 34px);
  margin: 0 0 14px;
  font-weight: 800;
}
.section-lead {
  color: var(--muted);
  margin: 0;
  font-size: 16px;
}

/* ---------- About ---------- */
.about {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 48px;
  align-items: start;
}
.about-head .eyebrow {
  margin-bottom: 8px;
}
.about-body p {
  color: var(--muted);
  margin: 0 0 18px;
}
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 8px;
}
.about-cell {
  background: var(--tint);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}
.about-cell b {
  display: block;
  color: var(--primary);
  margin-bottom: 6px;
  font-size: 15px;
}
.about-cell p {
  margin: 0;
  font-size: 13.5px;
}

/* ---------- Bento ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr;
  gap: 18px;
}
.bento-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 26px;
  box-shadow: 0 10px 30px rgba(120, 50, 20, 0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.bento-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 44px rgba(120, 50, 20, 0.14);
  border-color: rgba(255, 106, 61, 0.4);
}
.bento-item.featured {
  grid-column: span 2;
  grid-row: span 2;
  background: var(--gradient);
  color: #fff;
  border: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.bento-item.featured .bento-ic {
  background: rgba(255, 255, 255, 0.2);
}
.bento-item.featured p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 15.5px;
}
.bento-ic {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: var(--tint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 14px;
}
.bento-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
}
.bento-item p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
}

/* ---------- CTA band ---------- */
.cta {
  background: var(--gradient);
  color: #fff;
  text-align: center;
  padding: 64px 20px;
}
.cta h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
}
.cta p {
  margin: 0 0 24px;
  opacity: 0.92;
  font-size: 16px;
}

/* ---------- Advantages ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  max-width: 920px;
  margin: 0 auto;
}
.adv {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 30px 24px;
  box-shadow: 0 10px 30px rgba(120, 50, 20, 0.06);
  text-align: center;
}
.adv-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--tint);
  color: var(--primary);
  font-weight: 800;
  margin-bottom: 14px;
}
.adv h3 {
  margin: 0 0 8px;
  font-size: 18px;
}
.adv p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--dark);
  color: #e9d9cf;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 40px 20px 26px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-brand .logo-text {
  color: #fff;
  font-size: 20px;
}
.footer-brand p {
  margin: 4px 0 0;
  font-size: 13px;
  color: #ffb59c;
}
.footer-nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 14px;
  opacity: 0.85;
  transition: opacity 0.2s ease;
}
.footer-nav a:hover {
  opacity: 1;
  text-decoration: underline;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 150, 120, 0.16);
  text-align: center;
  padding: 18px 20px;
}
.footer-bottom p {
  margin: 6px 0;
  font-size: 13.5px;
  color: #e9d9cf;
}
.footer-bottom a {
  color: #ffb59c;
  text-decoration: underline;
}

/* ---------- Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .about {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .bento {
    grid-template-columns: 1fr 1fr;
  }
  .bento-item.featured {
    grid-column: span 2;
    grid-row: span 1;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .section {
    padding: 96px 0 60px;
  }
  .browser {
    margin-bottom: -40px;
  }
  .nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 24px rgba(120, 50, 20, 0.08);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav.open {
    max-height: 260px;
  }
  .nav-link {
    padding: 14px 20px;
    border-bottom: 1px solid var(--line);
  }
  .nav-toggle {
    display: flex;
  }
  .bento {
    grid-template-columns: 1fr;
  }
  .bento-item.featured {
    grid-column: span 1;
  }
  .adv-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}