:root {
  color-scheme: light;
  --blue: #2278f2;
  --blue-dark: #17265f;
  --sky: #edf6ff;
  --text: #243164;
  --muted: #73809d;
  --orange: #ff8a2a;
  --line: #e6edf8;
  --shadow: 0 18px 40px rgba(35, 74, 135, 0.16);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: #ffffff;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  min-height: 74px;
  padding: 14px clamp(20px, 8vw, 118px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #ffffff;
  font-size: 17px;
  font-weight: 800;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.16);
}
.brand-mark {
  display: inline-grid;
  width: 50px;
  height: 50px;
  flex: 0 0 50px;
  place-items: center;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 12px 28px rgba(29, 70, 139, 0.18);
  overflow: hidden;
}
.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.hero {
  position: relative;
  min-height: 640px;
  overflow: hidden;
  background: var(--sky);
}
.hero-shape {
  position: absolute;
  inset: 0 0 92px 0;
  background:
    radial-gradient(circle at 88% 18%, rgba(128, 236, 255, 0.34) 0 10%, transparent 22%),
    radial-gradient(circle at 34% 30%, rgba(124, 255, 169, 0.18) 0 8%, transparent 20%),
    radial-gradient(circle at 92% 0%, rgba(22, 101, 222, 0.8) 0 18%, transparent 19%),
    linear-gradient(135deg, #3c86ed 0%, #1974ee 55%, #166de2 100%);
  clip-path: polygon(0 0, 100% 0, 100% 72%, 84% 100%, 52% 100%, 0 24%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 0.82fr 1fr;
  align-items: center;
  gap: clamp(38px, 7vw, 92px);
  width: min(1120px, calc(100% - 40px));
  min-height: 640px;
  margin: 0 auto;
  padding: 104px 0 110px;
}
.hero-visual {
  position: relative;
  min-height: 360px;
}
.hero-visual::before,
.hero-visual::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.34);
  transform: rotate(-12deg);
}
.hero-visual::before {
  left: 6%;
  top: 88px;
  width: 330px;
  height: 2px;
}
.hero-visual::after {
  right: 6%;
  bottom: 86px;
  width: 260px;
  height: 2px;
}
.ai-orbit {
  position: absolute;
  left: 50%;
  top: 48%;
  width: 340px;
  height: 260px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  transform: translate(-50%, -50%) rotate(-10deg);
}
.ai-orbit span {
  position: absolute;
  display: block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.72);
}
.ai-orbit span:nth-child(1) { left: 20px; top: 58px; background: #ff6b94; }
.ai-orbit span:nth-child(2) { right: 30px; top: 96px; background: #8df45a; }
.ai-orbit span:nth-child(3) { left: 170px; bottom: -7px; background: #ffb034; }
.chat-bubble {
  position: absolute;
  z-index: 3;
  min-width: 82px;
  padding: 10px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  color: #17265f;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.06em;
  box-shadow: 0 18px 34px rgba(20, 46, 105, 0.18);
}
.chat-bubble::after {
  content: "";
  position: absolute;
  bottom: -8px;
  border: 8px solid transparent;
  border-top-color: rgba(255, 255, 255, 0.94);
}
.human-bubble { left: 2%; top: 56px; }
.human-bubble::after { left: 22px; }
.ai-bubble { right: 4%; top: 208px; color: #0f8d6d; }
.ai-bubble::after { right: 22px; }
.phone-card {
  position: absolute;
  left: 18%;
  top: 24px;
  width: 170px;
  height: 290px;
  padding: 22px 18px;
  border: 10px solid #27325f;
  border-radius: 30px;
  background:
    radial-gradient(circle at 50% 44%, rgba(93, 231, 255, 0.2), transparent 38%),
    linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
  box-shadow: 0 26px 36px rgba(24, 44, 88, 0.28);
  transform: rotate(-7deg);
}
.phone-top {
  width: 60px;
  height: 6px;
  margin: 0 auto 20px;
  border-radius: 99px;
  background: #d6deef;
}
.app-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.app-grid span {
  display: block;
  aspect-ratio: 1;
  border-radius: 12px;
  background: #eef4ff;
  box-shadow: inset 0 -8px 14px rgba(26, 91, 190, 0.08);
}
.app-grid span:nth-child(3n + 1) { background: #fff0dc; }
.app-grid span:nth-child(3n + 2) { background: #e7f9fb; }
.app-grid span:nth-child(4n) { background: #ffe8ef; }
.app-grid span:nth-child(1)::after,
.app-grid span:nth-child(6)::after {
  content: "";
  display: block;
  width: 42%;
  height: 42%;
  margin: 29%;
  border-radius: 50%;
  background: rgba(34, 120, 242, 0.28);
}
.float-dot {
  position: absolute;
  display: block;
  border-radius: 50%;
  box-shadow: 0 10px 24px rgba(23, 38, 95, 0.2);
}
.dot-one { width: 20px; height: 20px; left: 2%; top: 82px; border: 5px solid #ff5b83; }
.dot-two { width: 24px; height: 24px; right: 24%; top: 156px; border: 5px solid #7bdd4f; }
.dot-three { width: 14px; height: 14px; left: 38%; bottom: 44px; background: #ffb034; }
.hero-content { color: #ffffff; }
.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: none;
  margin-bottom: 32px;
  font-size: clamp(34px, 4.1vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
  white-space: nowrap;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.tag-icon {
  position: relative;
  display: inline-grid;
  width: 62px;
  height: 62px;
  place-items: center;
  border-radius: 18px;
  background: rgba(14, 27, 76, 0.88);
  box-shadow: 0 18px 30px rgba(15, 39, 96, 0.18);
}
.tag-icon::before,
.tag-icon::after {
  content: "";
  position: absolute;
}
.tag-app::before {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, #ffffff 0 48%, #75efff 49%);
}
.tag-app::after {
  width: 12px;
  height: 12px;
  right: 14px;
  bottom: 14px;
  border-radius: 4px;
  background: #ffb034;
}
.tag-game::before {
  width: 38px;
  height: 24px;
  border-radius: 14px;
  background: #ffffff;
}
.tag-game::after {
  width: 8px;
  height: 8px;
  left: 18px;
  top: 27px;
  border-radius: 50%;
  background: #1f78f2;
  box-shadow: 20px 0 0 #ff5b83;
}
.tag-ai::before {
  width: 34px;
  height: 34px;
  border: 3px solid #ffffff;
  border-radius: 50%;
}
.tag-ai::after {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #8df45a;
  box-shadow: -18px -10px 0 #ffb034, 18px 10px 0 #75efff;
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(66px, 8vw, 98px) 0;
}
.section h2 {
  margin-bottom: 26px;
  color: var(--blue-dark);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.16;
}
.features-section {
  padding-top: clamp(72px, 9vw, 112px);
}
.features-main {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: clamp(42px, 8vw, 104px);
}
.news-visual {
  position: relative;
  min-height: 430px;
}
.hand-phone {
  position: absolute;
  left: 26%;
  top: 44px;
  width: 210px;
  height: 300px;
}
.phone-screen {
  position: absolute;
  left: 54px;
  top: 0;
  z-index: 2;
  width: 128px;
  height: 226px;
  padding: 28px 18px;
  border: 6px solid #ffffff;
  border-radius: 24px;
  background: linear-gradient(180deg, #ff4b7e 0 30%, #2e94b4 31% 100%);
  box-shadow: 0 18px 28px rgba(34, 68, 128, 0.18);
}
.phone-screen strong {
  display: block;
  margin-bottom: 34px;
  color: #ffffff;
  font-size: 26px;
  line-height: 1;
}
.phone-screen span {
  display: block;
  height: 8px;
  margin-bottom: 12px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.38);
}
.phone-screen span:nth-child(4) { width: 70%; }
.hand-palm {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 140px;
  height: 210px;
  border-radius: 80px 72px 24px 24px;
  background: linear-gradient(160deg, #ffe6d6 0%, #ffb3a4 56%, #f4848e 100%);
  box-shadow: 24px 34px 0 -22px #2a65ae;
}
.hand-palm::before,
.hand-palm::after {
  content: "";
  position: absolute;
  right: -46px;
  width: 86px;
  height: 34px;
  border-radius: 99px;
  background: linear-gradient(90deg, #ffdcca, #f49b9f);
}
.hand-palm::before { top: 68px; transform: rotate(-24deg); }
.hand-palm::after { top: 116px; transform: rotate(-8deg); }
.cloud,
.bubble,
.mail-card,
.paper-plane {
  position: absolute;
  display: block;
}
.cloud {
  width: 78px;
  height: 28px;
  border-radius: 99px;
  background: #dff1f8;
}
.cloud::before {
  content: "";
  position: absolute;
  left: 24px;
  top: -16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #dff1f8;
}
.cloud-one { left: 11%; top: 84px; }
.cloud-two { left: 6%; bottom: 130px; transform: scale(0.72); }
.bubble-one {
  left: 14%;
  top: 152px;
  width: 54px;
  height: 44px;
  border-radius: 8px;
  background: #ff5d6f;
}
.bubble-one::after {
  content: "";
  position: absolute;
  left: 12px;
  bottom: -8px;
  border: 8px solid transparent;
  border-top-color: #ff5d6f;
}
.bubble-two {
  left: 23%;
  top: 188px;
  width: 44px;
  height: 34px;
  border-radius: 7px;
  background: #ffb02d;
}
.bubble-three {
  right: 12%;
  top: 210px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #ff5d6f;
}
.mail-card {
  right: 6%;
  bottom: 82px;
  width: 84px;
  height: 54px;
  border-radius: 8px;
  background: linear-gradient(180deg, #ffc23c, #ff922e);
  box-shadow: inset 0 -24px 0 rgba(255, 255, 255, 0.16);
}
.paper-plane {
  right: 12%;
  top: 88px;
  width: 0;
  height: 0;
  border-left: 34px solid #cfeefa;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  transform: rotate(-28deg);
}
.features-copy h2 {
  max-width: 520px;
  margin-bottom: 28px;
}
.mini-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px 52px;
}
.mini-feature-grid article { min-width: 0; }
.mini-icon {
  display: block;
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  border-radius: 16px;
}
.speed-icon { background: conic-gradient(#ef4056 0 28%, #ffe04d 0 50%, #22bf69 0 72%, #2478f2 0); }
.user-icon { background: linear-gradient(135deg, #4bd6ff 0 50%, #ffb23d 51%); }
.rating-icon { background: radial-gradient(circle, #ffffff 0 26%, #ffb23d 27% 58%, transparent 59%), linear-gradient(135deg, #ff7f50, #a95cf2); }
.award-icon { background: radial-gradient(circle at 50% 38%, #ffffff 0 22%, #ffd45c 23% 54%, transparent 55%), linear-gradient(135deg, #ffbd3a, #4aa7e8); }
.mini-feature-grid h3 {
  margin-bottom: 8px;
  color: var(--blue);
  font-size: 18px;
  line-height: 1.35;
}
.mini-feature-grid article:nth-child(2) h3 { color: #ff5a5f; }
.mini-feature-grid article:nth-child(3) h3 { color: #a742c8; }
.mini-feature-grid article:nth-child(4) h3 { color: #138a58; }
.mini-feature-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}
.capability-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
  margin-top: 64px;
}
.capability-row article {
  min-height: 318px;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-top: 5px solid var(--blue);
  border-radius: 4px;
  background: #ffffff;
  box-shadow: 0 12px 24px rgba(35, 74, 135, 0.16);
  text-align: center;
}
.capability-row article:nth-child(2) { border-top-color: #263783; }
.capability-row article:nth-child(3) { border-top-color: #1e74dd; }
.capability-row article:nth-child(4) { border-top-color: #263783; }
.card-art {
  position: relative;
  height: 138px;
  margin-bottom: 20px;
  border-radius: 10px;
  background: #f3f8ff;
  overflow: hidden;
}
.card-art::before,
.card-art::after {
  content: "";
  position: absolute;
  border-radius: 8px;
}
.art-code::before { left: 34px; top: 34px; width: 70px; height: 92px; background: #8f72e8; }
.art-code::after { right: 28px; top: 42px; width: 78px; height: 58px; background: #73d3ff; }
.art-access::before { left: 50%; top: 22px; width: 84px; height: 116px; background: linear-gradient(#ff5b9f, #7e5be8); transform: translateX(-50%); }
.art-access::after { left: 34px; bottom: 22px; width: 90px; height: 28px; background: #ffd56f; }
.art-setting::before { left: 36px; top: 28px; width: 94px; height: 106px; border: 3px solid #2b385f; background: transparent; }
.art-setting::after { right: 34px; top: 48px; width: 66px; height: 86px; border: 3px solid #2b385f; background: transparent; }
.art-update::before { left: 36px; top: 34px; width: 98px; height: 92px; background: linear-gradient(135deg, #9f7df2, #58c9ff); }
.art-update::after { right: 24px; top: 28px; width: 68px; height: 68px; border-radius: 50%; background: #ff7d7d; }
.capability-row h3 {
  margin: 0 0 10px;
  color: var(--blue-dark);
  font-size: 18px;
  line-height: 1.35;
}
.capability-row p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}
.site-footer a:hover { color: var(--blue); }
.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 28px 20px 34px;
  background: #071633;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

@media (max-width: 820px) {
  .site-header { padding-inline: 20px; }
  .brand { color: var(--blue-dark); text-shadow: none; }
  .hero-shape { clip-path: polygon(0 0, 100% 0, 100% 82%, 64% 100%, 0 84%); }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-top: 96px;
    text-align: center;
  }
  .hero-visual { min-height: 300px; order: 2; }
  .phone-card { left: 50%; transform: translateX(-50%) rotate(-6deg); }
  .human-bubble { left: 8%; top: 48px; }
  .ai-bubble { right: 8%; top: 196px; }
  .hero-content { order: 1; }
  .hero-tags { justify-content: center; }
  .features-main,
  .mini-feature-grid,
  .capability-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .brand { gap: 9px; font-size: 14px; }
  .brand-mark { width: 42px; height: 42px; flex-basis: 42px; }
  h1 { font-size: 30px; white-space: normal; }
  .section,
  .hero-inner { width: min(100% - 30px, 1120px); }
  .ai-orbit { width: 270px; height: 210px; }
  .chat-bubble { font-size: 11px; min-width: 68px; padding: 8px 11px; }
  .human-bubble { left: 0; top: 58px; }
  .ai-bubble { right: 0; top: 186px; }
  .phone-card { width: 148px; height: 254px; }
}