@font-face {
  font-family: "HYYouYuan 105J";
  src: url("/web/assets/font/HYYouYuan_105J.woff2") format("woff2"),
       url("/web/assets/font/HYYouYuan_105J.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "244SSDunDunTi";
  src: url('/web/assets/font/common/244SSDunDunTi.ttf');
  font-display: swap;
}



:root {
  --color-bg: #08111f;
  --color-surface: rgba(255, 255, 255, 0.08);
  --color-surface-strong: rgba(255, 255, 255, 0.14);
  --color-text: #f7fbff;
  --color-muted: #a8b3c7;
  --color-primary: #62e6c5;
  --color-primary-dark: #18a889;
  --color-line: rgba(255, 255, 255, 0.14);
  --shadow-card: 0 24px 80px rgba(0, 0, 0, 0.28);
  --radius-lg: 28px;
  --radius-md: 18px;
  --container: 1120px;
  font-family: "HYYouYuan 105J", Inter, Arial, Helvetica, sans-serif;
}

html[lang="ja"] {
  font-family: "HYYouYuan 105J", "Noto Sans JP", "Hiragino Sans", "Yu Gothic", Arial, sans-serif;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(98, 230, 197, 0.2), transparent 30%),
    radial-gradient(circle at top right, rgba(92, 137, 255, 0.18), transparent 32%),
    var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

.container {
  /* iOS 13.0-13.3 不支持 min()，width + max-width 等价兼容 */
  width: calc(100% - 40px);
  max-width: var(--container);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  /* border-bottom: 1px solid var(--color-line); */
  
  background: rgba(255, 255, 255, 0.78);
  /* backdrop-filter: blur(18px); */
}

.header-inner {
  display: flex;
  align-items: center;
  min-height: 76px;
  gap: 28px;
}

/* [gap-fallback:iOS13] .header-inner */
.header-inner > * + * { margin-left: 28px; }
@supports (inset-inline: 0) {
  .header-inner { gap: 28px; }
  .header-inner > * + * { margin-left: 0; }
}

.site-logo {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* [gap-fallback:iOS13] .site-nav */
.site-nav > * + * { margin-left: 8px; }
@supports (inset-inline: 0) {
  .site-nav { gap: 8px; }
  .site-nav > * + * { margin-left: 0; }
}

.site-nav-link,
.language-current,
.language-option {
  border-radius: 999px;
  padding: 10px 16px;
  color: var(--color-muted);
  transition: color 0.2s ease, background 0.2s ease;
}

.site-nav-link:hover,
.site-nav-link.is-active,
.language-option:hover,
.language-option.is-active {
  background: var(--color-surface);
  color: var(--color-text);
}

.language-switcher {
  position: relative;
}

.language-current {
  cursor: pointer;
  background: var(--color-surface);
  color: var(--color-text);
}

.language-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 12px);
  display: none;
  min-width: 150px;
  padding: 8px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: #111b2d;
  box-shadow: var(--shadow-card);
}

.language-menu.is-active {
  display: grid;
  gap: 4px;
}

.language-option {
  display: block;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  margin-left: auto;
  border-radius: 999px;
  background: var(--color-surface);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--color-text);
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 700;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #8bf5ff);
  color: #03131a;
}

.btn-secondary {
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-text);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.section-heading h2 {
  font-size: 30px; /* iOS 13.0-13.3 兜底：不支持 clamp() */
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.site-footer {
  border-top: 1px solid var(--color-line);
  padding: 30px 0;
  color: var(--color-muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

/* [gap-fallback:iOS13] .footer-inner */
.footer-inner > * + * { margin-left: 20px; }
@supports (inset-inline: 0) {
  .footer-inner { gap: 20px; }
  .footer-inner > * + * { margin-left: 0; }
}

.js-animate {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.js-animate.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 760px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 14px;
    padding: 14px 0;
  }

  /* [gap-fallback:iOS13] .header-inner @760（wrap 场景用均分法） */
  .header-inner > * { margin: 7px; }
  @supports (inset-inline: 0) {
    .header-inner { gap: 14px; }
    .header-inner > * { margin: 0; }
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
  }

  .site-nav.is-active {
    display: flex;
  }

  .language-switcher {
    margin-left: 0;
  }

  .footer-inner {
    flex-direction: column;
  }
}

/* ============================================================
 * flex gap 兼容兜底（iOS 13 / Safari 13.x 不支持 flex 容器 gap）
 * 由 common.js 实测检测：不支持时 <html> 带 no-flex-gap，
 * 用相邻兄弟 margin 等效还原间距（row→margin-left，column→margin-top）。
 * 支持 flex gap 的现代浏览器不会命中 no-flex-gap，零影响。
 * ========================================================== */
.no-flex-gap .header-inner > * + * { margin-left: 28px; }
/* 例外：site-nav / menu-toggle 依赖 margin-left:auto 右推，不被兜底覆盖 */
.no-flex-gap .header-inner > .site-nav { margin-left: auto; }
.no-flex-gap .header-inner > .menu-toggle { margin-left: auto; }
.no-flex-gap .site-nav > * + * { margin-left: 8px; }
.no-flex-gap .footer-inner > * + * { margin-left: 20px; }
.no-flex-gap .hero-actions > * + * { margin-left: 14px; }
.no-flex-gap .home-header__left > * + * { margin-left: 1.4rem; }
.no-flex-gap .home-header__nav > * + * { margin-left: .6rem; }
.no-flex-gap .home-hero-cta > * + * { margin-left: .4rem; }
.no-flex-gap .home-support > * + * { margin-left: .16rem; }
.no-flex-gap .home-support__icons > * + * { margin-left: .27rem; }
.no-flex-gap .home-actions > * + * { margin-left: .18rem; }
.no-flex-gap .page2-rules > * + * { margin-left: .04rem; }
.no-flex-gap .page2-btns > * + * { margin-left: .3rem; }
.no-flex-gap .page2-invite-count > * + * { margin-left: .12rem; }
.no-flex-gap .page2-invite-count__text > * + * { margin-left: .06rem; }
.no-flex-gap .page3-info__value--height > * + *,
.no-flex-gap .page3-info__value--weight > * + * { margin-left: .04rem; }
.no-flex-gap .page4-pagination > * + * { margin-left: .12rem; }
.no-flex-gap .home-copyright__brand > * + * { margin-left: .45rem; }
.no-flex-gap .home-stage-bar__socials > * + * { margin-left: .15rem; }
.no-flex-gap .home-stage-bar__share-popover > * + * { margin-left: .18rem; }
.no-flex-gap .news-detail-breadcrumb > * + * { margin-left: .1rem; }
.no-flex-gap .news-detail-header__title-wrap > * + * { margin-left: .2rem; }
.no-flex-gap .news-detail-meta > * + * { margin-left: 16px; }
.no-flex-gap .news-list-breadcrumb > * + * { margin-left: .1rem; }
.no-flex-gap .news-list-item__meta > * + * { margin-top: .01rem; }
.no-flex-gap .news-list-pagination > * + * { margin-left: .34rem; }
.no-flex-gap .news-list-pagination__pages > * + * { margin-left: .08rem; }
.no-flex-gap .pop-eligible__platforms > * + * { margin-left: .47rem; }
.no-flex-gap .pop-ineligible__actions > * + * { margin-left: .2rem; }
.no-flex-gap .pop-invite__share > * + * { margin-left: .47rem; }
.no-flex-gap .pop-survey__field--inline > * + * { margin-left: .2rem; }
.no-flex-gap .pop-survey__checkbox-group > * + * { margin-left: .04rem; }
.no-flex-gap .pop-survey__checkbox-group--split > * + * { margin-left: .4rem; }
.no-flex-gap .pop-survey__checkbox-col > * + * { margin-top: .04rem; }
.no-flex-gap .pop-survey__checkbox-item > * + * { margin-left: .12rem; }
.no-flex-gap .pop-survey__agreement > * + * { margin-left: .12rem; }
.no-flex-gap .pop-survey__nav > * + * { margin-left: .24rem; }

/* 移动端断点内方向切换为 column 的容器，兜底 margin 同步切到垂直方向 */
@media (max-width: 760px) {
  .no-flex-gap .header-inner > * + * { margin-left: 14px; }
  /* 例外：menu-toggle 保持 auto 右推；site-nav 整行换行不左偏、并补偿换行行距 */
  .no-flex-gap .header-inner > .menu-toggle { margin-left: auto; }
  .no-flex-gap .header-inner > .site-nav { margin-left: 0; margin-top: 14px; }
  .no-flex-gap .site-nav > * + * { margin-left: 0; margin-top: 8px; }
  .no-flex-gap .footer-inner > * + * { margin-left: 0; margin-top: 20px; }
}