/* 品牌 token 与静态语义排版；不下载外部字体，以系统中文字体保证境内首屏。 */
:root {
  color-scheme: light;
  --ink: #202c38;
  --ink-soft: #586979;
  --blue: #528fbd;
  --blue-deep: #326b94;
  --sky: #eaf4fb;
  --paper: #fbfcfd;
  --warm: #eeb086;
  --line: rgb(75 107 132 / 16%);
  --page: min(1180px, calc(100vw - 48px));
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 8px 30px rgb(39 75 100 / 18%);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  width: var(--page);
  height: 84px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand,
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img,
.footer-brand img {
  border-radius: 9px;
}

.brand span {
  font-size: 17px;
  letter-spacing: 0.02em;
}

.brand b {
  margin-left: 3px;
  color: var(--ink-soft);
  font-weight: 500;
}

nav {
  display: flex;
  gap: 32px;
  color: var(--ink-soft);
  font-size: 14px;
}

nav a,
.store-link {
  transition: color 180ms ease;
}

nav a:hover,
nav a:focus-visible,
.store-link:hover,
.store-link:focus-visible {
  color: var(--blue-deep);
}

:focus-visible {
  outline: 3px solid rgb(50 107 148 / 38%);
  outline-offset: 4px;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  display: grid;
  align-items: center;
  background: linear-gradient(125deg, #f9fcfe 0%, #edf6fc 55%, #dbeefa 100%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: var(--page);
  margin: 0 auto;
  padding: 122px 0 100px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--blue-deep);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.18em;
}

h1 {
  margin: 0;
  max-width: 650px;
  font-size: clamp(64px, 8vw, 112px);
  line-height: 0.98;
  letter-spacing: -0.065em;
  font-weight: 650;
}

.hero-lead {
  margin: 32px 0 0;
  color: var(--ink-soft);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.7;
  letter-spacing: 0.04em;
}

.hero-actions {
  margin-top: 38px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.launch-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid rgb(50 107 148 / 14%);
  border-radius: 999px;
  background: rgb(255 255 255 / 74%);
  box-shadow: 0 12px 34px rgb(63 112 148 / 11%);
  color: #315e7e;
  font-size: 15px;
  backdrop-filter: blur(12px);
}

.launch-status span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--warm);
  box-shadow: 0 0 0 5px rgb(238 176 134 / 16%);
}

.store-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 2px;
  color: var(--ink-soft);
  font-size: 14px;
}

.hero-art {
  position: absolute;
  z-index: 1;
  right: clamp(-210px, -8vw, -72px);
  bottom: -3%;
  width: min(61vw, 880px);
  height: 94%;
  overflow: hidden;
  border-radius: 46% 0 0 0;
  opacity: 0.92;
  mask-image: linear-gradient(90deg, transparent 0%, #000 26%, #000 100%);
}

.hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, rgb(241 248 253 / 48%), transparent 45%);
}

.hero-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 46% 45%;
}

.scroll-note {
  position: absolute;
  z-index: 2;
  bottom: 28px;
  left: 50%;
  margin: 0;
  color: rgb(32 44 56 / 48%);
  font-size: 11px;
  letter-spacing: 0.22em;
  writing-mode: vertical-rl;
}

.intro {
  width: min(860px, calc(100vw - 48px));
  margin: 0 auto;
  padding: 150px 0 120px;
  text-align: center;
}

.intro h2 {
  margin: 0;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.25;
  letter-spacing: -0.04em;
  font-weight: 580;
}

.intro > p:last-child {
  max-width: 650px;
  margin: 42px auto 0;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 2;
}

.moments {
  width: var(--page);
  margin: 0 auto 140px;
  border-top: 1px solid var(--line);
}

.moments article {
  display: grid;
  grid-template-columns: minmax(80px, 0.55fr) 1.45fr;
  gap: 32px;
  padding: 54px 0;
  border-bottom: 1px solid var(--line);
}

.moment-number {
  color: #9a603c;
  font: 500 14px/1 ui-monospace, "SFMono-Regular", monospace;
}

.moments h3 {
  margin: 0;
  font-size: clamp(28px, 3vw, 42px);
  font-weight: 580;
  letter-spacing: -0.035em;
}

.moments p {
  max-width: 620px;
  margin: 18px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
}

.product-showcase {
  overflow: hidden;
  padding: 138px max(24px, calc((100vw - 1180px) / 2)) 150px;
  background: #172636;
  color: #f6f9fb;
}

.showcase-heading {
  max-width: 900px;
}

.showcase-heading .section-kicker {
  color: #a9cae2;
}

.showcase-heading h2 {
  margin: 0;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.24;
  letter-spacing: -0.045em;
  font-weight: 560;
}

.phone-gallery {
  max-width: 1060px;
  margin: 84px auto 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(22px, 4vw, 58px);
  align-items: start;
}

.phone-card {
  margin: 0;
}

.phone-card-timer {
  margin-top: 70px;
}

.phone-card img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 28px;
  box-shadow: 0 34px 70px rgb(0 0 0 / 28%);
}

.phone-card figcaption {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 22px 4px 0;
}

.phone-card b {
  font-size: 15px;
  font-weight: 600;
}

.phone-card figcaption span {
  color: #aabbc8;
  font-size: 13px;
}

.closing {
  min-height: 620px;
  padding: 120px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background:
    radial-gradient(circle at 50% 44%, rgb(255 209 165 / 26%), transparent 24%),
    linear-gradient(145deg, #f5f9fc, #e8f3fa);
}

.closing > img {
  border-radius: 15px;
}

.closing h2 {
  margin: 30px 0 38px;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.22;
  letter-spacing: -0.045em;
  font-weight: 580;
}

footer {
  width: var(--page);
  margin: 0 auto;
  padding: 44px 0 36px;
  display: block;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
}

.footer-main,
.footer-legal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

footer p {
  margin: 0;
}

.footer-brand p {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.footer-brand span {
  margin-left: 2px;
  color: var(--ink-soft);
  font-weight: 450;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-legal {
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid rgb(75 107 132 / 10%);
}

.footer-legal a,
.footer-links a {
  text-underline-offset: 3px;
}

.footer-legal a:hover,
.footer-links a:hover {
  color: var(--blue-deep);
  text-decoration: underline;
}

@media (max-width: 760px) {
  :root {
    --page: calc(100vw - 40px);
  }

  .site-header {
    height: 70px;
  }

  .site-header nav {
    display: none;
  }

  .hero {
    min-height: 820px;
    align-items: start;
  }

  .hero-copy {
    padding-top: 118px;
  }

  h1 {
    font-size: clamp(58px, 19vw, 80px);
  }

  .hero-art {
    right: -22%;
    bottom: -5%;
    width: 118%;
    height: 58%;
    border-radius: 46% 0 0;
    opacity: 0.68;
    mask-image: linear-gradient(180deg, transparent 0%, #000 26%, #000 100%);
  }

  .scroll-note {
    display: none;
  }

  .intro {
    padding: 104px 0 84px;
  }

  .intro h2 br {
    display: none;
  }

  .moments {
    margin-bottom: 92px;
  }

  .moments article {
    grid-template-columns: 44px 1fr;
    gap: 16px;
    padding: 38px 0;
  }

  .footer-main,
  .footer-legal {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    display: flex;
    gap: 14px 20px;
  }

  .product-showcase {
    padding: 88px 20px;
  }

  .showcase-heading h2 br {
    display: none;
  }

  .phone-gallery {
    width: min(82vw, 350px);
    margin-top: 52px;
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .phone-card-timer {
    margin-top: 0;
  }

  .closing {
    min-height: 480px;
    padding: 84px 20px;
  }
}

/* 展示图内文字不是页面交互；无障碍按钮只负责切换同组图片。 */
.gallery-switch {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.gallery-switch button {
  padding: 10px 18px;
  min-height: 44px;
  border: 1px solid #8095a5;
  border-radius: 999px;
  background: transparent;
  color: #dce9f3;
  font: inherit;
  cursor: pointer;
}

.gallery-switch button[aria-pressed="true"] {
  color: #203e53;
  background: #d4e7f4;
  border-color: #d4e7f4;
}

.product-showcase :focus-visible {
  outline-color: #efd0ad;
}

.legal-header {
  width: var(--page);
  margin: auto;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
}

.legal-content {
  width: min(760px, calc(100% - 40px));
  margin: 60px auto 100px;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.legal-content h1 {
  font-size: clamp(34px, 6vw, 52px);
  letter-spacing: -.035em;
  line-height: 1.25;
}

.legal-content h2 {
  font-size: 21px;
  line-height: 1.5;
  margin: 38px 0 14px;
}

.legal-content p {
  margin: 0 0 18px;
}

.legal-content a {
  color: var(--blue-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.policy-dates {
  margin: 22px 0 30px;
  color: var(--ink-soft);
  font-size: 14px;
}

.policy-summary {
  border-radius: 20px;
  padding: 24px;
  background: var(--sky);
  margin: 30px 0;
}

.policy-summary h2 {
  margin-top: 0;
}

.policy-summary ul {
  padding-left: 22px;
  margin-bottom: 0;
}

.policy-summary li + li {
  margin-top: 8px;
}

.error-title {
  font-size: clamp(28px, 5vw, 54px);
  margin-bottom: 32px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}