/*
 * YAMABAKA 共通外壳
 * 仅定义品牌头部、主导航、首屏面板与小屏断点；各模块保留自己的业务内容样式。
 */

:root {
  --site-panel-radius: 18px;
  --site-panel-shadow: 0 8px 22px rgb(17 37 29 / 7%);
}

body {
  background:
    radial-gradient(circle at 78% -10%, rgb(15 107 72 / 16%), transparent 28%),
    linear-gradient(180deg, #fbfdfc 0%, #f3f6f4 42%, #eef4f0 100%);
}

body::before {
  height: 220px;
  background:
    linear-gradient(135deg, transparent 54%, rgb(15 107 72 / 10%) 54% 58%, transparent 58%),
    linear-gradient(150deg, transparent 61%, rgb(26 80 118 / 14%) 61% 66%, transparent 66%),
    linear-gradient(180deg, rgb(255 255 255 / 78%), rgb(255 255 255 / 0));
  opacity: 0.9;
}

.site-header {
  position: relative;
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-brand {
  justify-self: start;
  min-width: 230px;
}

.site-nav {
  position: absolute;
  left: 50%;
  justify-self: center;
  transform: translateX(-50%);
  width: auto;
}

.site-nav a {
  display: inline-flex;
  justify-content: center;
  min-width: 98px;
}

.site-header-actions {
  margin-left: auto;
  min-width: 170px;
}

.site-header-spacer {
  margin-left: auto;
  min-width: 170px;
}

.gear-header.site-header,
.mountain-header.site-header {
  margin: 28px auto 22px;
  padding: 0;
}

.site-primary-panel {
  border-radius: var(--site-panel-radius) !important;
  box-shadow: var(--site-panel-shadow) !important;
}

.mountain-index-hero.site-primary-panel {
  margin-top: 0;
}

.mountain-language-note {
  margin-top: 0;
  margin-bottom: 0;
  color: var(--muted, #66786f);
  font-size: 13px;
  font-weight: 700;
  text-align: right;
}

.site-header .brand-mark,
.site-header .mountain-mark {
  width: 54px;
  height: 42px;
}

.site-header .brand-mark::before,
.site-header .mountain-mark::before {
  left: 0;
  width: 42px;
  height: 40px;
}

.site-header .brand-mark::after,
.site-header .mountain-mark::after {
  right: 2px;
  width: 32px;
  height: 30px;
}

.site-header .brand-mark span,
.site-header .mountain-mark span {
  left: 14px;
  width: 14px;
  height: 16px;
}

.site-header .brand-name,
.site-header .mountain-brand-name {
  margin: 0 0 3px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.site-header .brand-name span,
.site-header .mountain-brand-name small {
  margin-left: 0;
  font-size: 12px;
  letter-spacing: 0;
}

.site-header .brand-title,
.site-header .mountain-brand-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 0;
}

@media (max-width: 1120px) {
  .site-header {
    display: flex !important;
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .site-brand,
  .site-header-actions,
  .site-header-spacer {
    min-width: 0;
  }

  .site-header-spacer {
    display: none;
  }

  .site-nav {
    position: static;
    left: auto;
    transform: none;
    justify-content: flex-start;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }
}

@media (max-width: 980px) {
  .gear-header.site-header,
  .mountain-header.site-header {
    margin-top: 18px;
  }
}

@media (max-width: 560px) {
  /* The mountain logo is a fixed Japanese phrase; keep it on one line without widening the page. */
  .site-header .mountain-brand {
    gap: 10px;
  }

  .site-header .mountain-brand-title {
    font-size: 24px;
    letter-spacing: -0.025em;
  }
}