/* Mova — marketing site styles: deep-space blue + warm orange accent.
   The brand reads "mova = move": knowledge drives life, mova moves you. */
:root {
  --bg: #ffffff;
  --ink: #1c2333;
  --ink-soft: #5c6b85;
  --accent: #1e3a8a;            /* deep-space blue (primary) */
  --accent-soft: rgba(30, 58, 138, 0.08);
  --warm: #ff8c42;              /* warm orange (accent dot) */
  --warm-soft: rgba(255, 140, 66, 0.14);
  --line: #e9edf4;
  --hero: #f6f8fc;
  --dark: #141b2d;
  --dark-2: #101624;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }
svg.icon { width: 14px; height: 14px; fill: currentColor; stroke: none; vertical-align: -2px; }

.img-rounded { border-radius: 10px; box-shadow: 0 0 8px 3px rgba(0, 0, 0, 0.07); }
.divider { border: none; border-top: 1px solid var(--line); margin: 0; }
.center { text-align: center; }

section { padding: 90px 24px; }
section h3 { font-size: clamp(22px, 3vw, 30px); font-weight: 600; }
.fullscreen { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.content-resizer { max-width: 720px; margin: 0 auto; text-align: center; }

.slogon { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 16px; color: var(--ink-soft); }
.slogon a { color: var(--ink-soft); cursor: default; }

/* ================= HERO ================= */
.header { background: var(--hero); position: relative; flex-direction: column; }
.header .logo {
  font-size: clamp(72px, 13vw, 128px);
  font-weight: 700;
  letter-spacing: -3px;
  color: var(--ink);
  line-height: 1;
}
.header .slogon { margin-top: 26px; font-size: clamp(15px, 2.2vw, 21px); }
.typed-caret { color: var(--warm); animation: blink 0.9s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.scroll-down-div {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  cursor: pointer;
  color: var(--ink-soft);
  animation: pulse 1.5s infinite;
}
.scroll-down-div .icon { width: 28px; height: 28px; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

/* ================= NAV ================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 30px;
  transition: box-shadow 0.2s;
}
.nav.scrolled { box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06); }
.product-name {
  font-weight: 700;
  font-size: 21px;
  color: var(--ink);
  letter-spacing: -0.5px;
}
.product-name:hover { text-decoration: none; color: var(--accent); }
.nav-list { display: flex; gap: 4px; list-style: none; flex-wrap: wrap; }
.nav-list a {
  display: block;
  color: #555;
  font-size: 14px;
  padding: 6px 14px;
  border-radius: 6px;
}
.nav-list a:hover { color: var(--accent); text-decoration: none; background: var(--accent-soft); }
.nav-list a.active { color: var(--accent); font-weight: 600; background: var(--accent-soft); }

/* ================= FEATURE ================= */
#feature .feature-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}
#feature .text-content h3 { margin-bottom: 14px; }
#feature .text-content > p { color: var(--ink-soft); margin-bottom: 18px; max-width: 480px; }
#feature .text-content h4 { font-size: 15px; font-weight: 600; margin: 12px 0; display: flex; align-items: center; gap: 8px; }
#feature .text-content h4 .icon { color: var(--accent); width: 15px; height: 15px; }
#feature .img-side img { width: 100%; }

/* ================= FUNCTION SLIDER ================= */
#function h3 { margin-bottom: 26px; }
.dots { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; max-width: 980px; margin: 0 auto 34px; }
.dot {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  font-size: 13.5px;
  padding: 5px 13px;
  border-radius: 999px;
  transition: all 0.15s;
}
.dot:hover { border-color: var(--warm); color: var(--warm); }
.dot.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.slider { position: relative; max-width: 1080px; margin: 0 auto; }
.slides { overflow: hidden; }
.slide { display: none; }
.slide.active { display: grid; grid-template-columns: 1fr 1.4fr 1fr; gap: 30px; align-items: center; }
.side-desc { display: flex; flex-direction: column; gap: 18px; }
.desc-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.desc-content { font-size: 13.5px; color: var(--ink-soft); }
.side-desc.left { text-align: right; }
.slide-img img { width: 100%; border-radius: 10px; box-shadow: 0 0 8px 3px rgba(0, 0, 0, 0.07); }
.slide .slogon { grid-column: 1 / -1; text-align: center; margin-top: 26px; font-size: 14px; }

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  z-index: 5;
  transition: color 0.15s, box-shadow 0.15s;
}
.slider-arrow:hover { color: var(--accent); box-shadow: 0 4px 14px rgba(0, 0, 0, 0.16); }
.slider-arrow .icon { width: 18px; height: 18px; }
.slider-arrow.prev { left: -52px; }
.slider-arrow.next { right: -52px; }
.slider-arrow.prev .icon.flip { transform: scaleX(-1); }

/* ================= ACCESSIBILITY ================= */
#action { background: var(--hero); }
#action h3 { margin-bottom: 8px; }
#action .slogon { margin-bottom: 44px; font-size: 15px; }
.feature-boxes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}
.feature-box { text-align: center; }
.feature-box-img { overflow: hidden; border-radius: 10px; margin-bottom: 14px; box-shadow: 0 0 8px 3px rgba(0, 0, 0, 0.06); }
.feature-box-img img { width: 100%; height: 150px; object-fit: cover; transition: transform 0.3s; }
.feature-box:hover .feature-box-img img { transform: scale(1.04); }
.feature-box-title { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.feature-box-desc { font-size: 13.5px; color: var(--ink-soft); max-width: 320px; margin: 0 auto; }

/* ================= THEMES ================= */
#theme h3 { margin-bottom: 8px; }
#theme .slogon { margin-bottom: 36px; font-size: 15px; }
.theme-previews { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; max-width: 1000px; margin: 0 auto; }
.theme-previews img { width: 100%; }

/* ================= LIKES ================= */
#likes { text-align: center; }
.like-card { position: relative; max-width: 780px; margin: 0 auto; min-height: 160px; display: flex; align-items: center; justify-content: center; }
.like-slide { display: none; }
.like-slide.active { display: block; }
.like-slide h5 { font-size: clamp(26px, 4vw, 40px); font-weight: 500; color: var(--ink); }
.like-quote { font-size: clamp(19px, 3vw, 27px); font-weight: 400; color: var(--ink); line-height: 1.5; }
.like-user { margin-top: 18px; color: var(--ink-soft); font-size: 14px; }
.next-user-card {
  position: absolute;
  right: -30px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: none;
  color: var(--ink-soft);
  padding: 10px;
  transition: color 0.15s;
}
.next-user-card:hover { color: var(--accent); }
.next-user-card .icon { width: 40px; height: 20px; }

/* ================= PURCHASE ================= */
#purchase { background: var(--hero); flex-direction: column; padding-top: 120px; padding-bottom: 120px; }
.purchase-title {
  font-family: "Century Gothic", "Segoe UI", sans-serif;
  font-size: clamp(34px, 6vw, 56px);
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 60px;
}
.purchase-box {
  display: flex;
  gap: 26px;
  align-items: flex-start;
  justify-content: center;
  max-width: 680px;
  margin: 0 auto;
  text-align: left;
}
.app-icon { width: 128px; height: 128px; border-radius: 24px; object-fit: cover; box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12); }
.purchase-hint { font-size: 13px; opacity: 0.6; }
.purchase-sub { font-size: 14px; color: #555; margin: 8px 0 14px; }
.price-row { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.price {
  display: inline-block;
  color: #192023;
  background-color: #e4e4e4;
  padding: 4px 14px;
  border-radius: 5px;
  font-size: 17px;
  font-weight: 600;
}
.muted { opacity: 0.6; font-size: 13px; }
.purchase-actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-block;
  padding: 10px 26px;
  border-radius: 8px;
  font-size: 14.5px;
  font-weight: 600;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; box-shadow: 0 6px 18px rgba(30, 58, 138, 0.35); }
.btn.primary:hover { background: #16306f; border-color: #16306f; }
.btn.warm { background: var(--warm); border-color: var(--warm); color: #fff; box-shadow: 0 6px 18px rgba(255, 140, 66, 0.35); }
.btn.warm:hover { background: #f07a2f; border-color: #f07a2f; }
.download-btn-wrap { position: relative; }
.caret { font-size: 11px; margin-left: 4px; }
.dropdown-content {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  padding: 6px;
  z-index: 40;
}
.dropdown-content.show { display: block; }
.dropdown-content a { display: block; padding: 8px 12px; border-radius: 6px; color: var(--ink); font-size: 13.5px; }
.dropdown-content a:hover { background: var(--accent-soft); color: var(--accent); text-decoration: none; }
.purchase-links { margin-top: 22px; font-size: 13px; }

/* ================= CONTACT ================= */
.dark { background: var(--dark); color: #eee; }
.dark a { color: #ddd; }
.dark a:hover { color: #fff; }
#contact { text-align: center; }
.contact-head { font-size: clamp(24px, 4vw, 34px); margin-bottom: 18px; }
.contact-links { margin-bottom: 34px; font-size: 14px; }
.feedback { max-width: 520px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.feedback textarea,
.feedback input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  outline: none;
  resize: vertical;
}
.feedback textarea { min-height: 110px; }
.feedback textarea::placeholder,
.feedback input::placeholder { color: #aaa; }
.feedback .btn.primary { align-self: flex-end; border: none; }

/* ================= ABOUT ================= */
#about { background: var(--dark-2); color: #c5c5c5; padding-top: 70px; padding-bottom: 70px; }
.about-wrapper { display: flex; justify-content: space-between; gap: 36px; flex-wrap: wrap; max-width: 980px; margin: 0 auto; text-align: left; }
.about-column h5 { color: #fff; font-size: 13px; letter-spacing: 0.5px; margin-bottom: 10px; }
.about-column a { display: block; color: #c5c5c5; font-size: 13px; padding: 3px 0; }
.about-column a:hover { color: #fff; }

.site-footer {
  background: #222;
  color: #8a8a8a;
  text-align: center;
  padding: 20px;
  font-size: 12.5px;
}
.site-footer a { color: #aaa; }

/* ================= REVEAL ================= */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ================= RESPONSIVE ================= */
@media (max-width: 900px) {
  .slide.active { grid-template-columns: 1fr; gap: 16px; }
  .side-desc.left { text-align: left; }
  .slider-arrow.prev { left: -6px; }
  .slider-arrow.next { right: -6px; }
  .feature-boxes { grid-template-columns: 1fr 1fr; }
  #feature .feature-wrap { grid-template-columns: 1fr; }
  .theme-previews { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  section { padding: 60px 16px; }
  .nav { padding: 8px 14px; flex-direction: column; gap: 6px; }
  .feature-boxes { grid-template-columns: 1fr; }
  .purchase-box { flex-direction: column; align-items: center; text-align: center; }
  .purchase-actions { justify-content: center; }
  .next-user-card { right: 0; }
}