.ymt-site-header { position: relative; z-index: 50; border-bottom: 1px solid #cfe0f4; background: rgba(255,255,255,.98); box-shadow: 0 2px 7px rgba(41,121,216,.05); }
.ymt-header-main { display: flex; align-items: center; justify-content: space-between; gap: 30px; min-height: 89px; }
.ymt-brand { display: flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.ymt-brand img { width: 42px; height: 42px; }
.ymt-brand span { display: flex; flex-direction: column; }
.ymt-brand strong { font-size: clamp(23px, 2vw, 29px); letter-spacing: .025em; line-height: 1.2; }
.ymt-brand small { margin-top: 3px; color: var(--color-text-muted); font-size: 10px; letter-spacing: .04em; }
.ymt-header-tools { display: grid; min-width: 380px; justify-items: end; gap: 10px; }
.ymt-header-utility { display: flex; align-items: center; gap: 18px; }
.ymt-utility-nav { display: flex; gap: 21px; }
.ymt-utility-nav a { font-size: 11px; font-weight: 650; }
.ymt-date-search { position: relative; }
.ymt-date-search summary { display: flex; align-items: center; gap: 5px; color: var(--color-primary-dark); font-size: 11px; font-weight: 750; cursor: pointer; list-style: none; }
.ymt-date-search summary::-webkit-details-marker { display: none; }
.ymt-date-search summary::after { width: 6px; height: 6px; margin: -3px 1px 0 2px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; content: ""; transform: rotate(45deg); transition: transform .18s ease; }
.ymt-date-search[open] summary::after { margin-top: 3px; transform: rotate(225deg); }
.ymt-date-search-panel { position: absolute; top: calc(100% + 11px); right: 0; z-index: 80; width: 344px; padding: 19px; border: 1px solid #c9dff5; border-top: 3px solid var(--color-accent); border-radius: 7px; background: #fff; box-shadow: 0 15px 40px rgba(31,73,117,.18); }
.ymt-date-search-panel::before { position: absolute; top: -8px; right: 24px; width: 12px; height: 12px; border-top: 1px solid #c9dff5; border-left: 1px solid #c9dff5; background: #fff; content: ""; transform: rotate(45deg); }
.ymt-date-search-kicker { display: block; margin-bottom: 2px; color: var(--color-accent); font-family: Georgia, "Yu Mincho", serif; font-size: 10px; font-weight: 800; letter-spacing: .16em; }
.ymt-date-search-panel > strong { font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: 17px; letter-spacing: .03em; }
.ymt-date-search-panel > p { margin: 5px 0 14px; color: var(--color-text-muted); font-size: 11px; line-height: 1.65; }
.ymt-date-search-form { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.ymt-date-search-form label { display: grid; gap: 4px; }
.ymt-date-search-form label > span { color: var(--color-text-muted); font-size: 10px; font-weight: 700; }
.ymt-date-search-form select { width: 100%; height: 39px; padding: 0 29px 0 10px; border: 1px solid var(--color-border); border-radius: 5px; background: #f8fbff; color: var(--color-text); font: inherit; font-size: 12px; }
.ymt-date-search-form button { grid-column: 1 / -1; min-height: 40px; border: 0; border-radius: 5px; background: var(--color-primary-dark); color: #fff; font-size: 12px; font-weight: 750; cursor: pointer; transition: background .18s ease, transform .18s ease; }
.ymt-date-search-form button:hover { background: #0f579d; transform: translateY(-1px); }
.ymt-search { display: flex; width: min(100%, 380px); }
.ymt-search input { min-width: 0; flex: 1; height: 36px; padding: 0 13px; border: 1px solid var(--color-border); border-radius: 5px 0 0 5px; background: #fff; font-size: 12px; }
.ymt-search button { width: 40px; border: 0; border-radius: 0 5px 5px 0; background: var(--color-primary-dark); color: #fff; font-size: 20px; cursor: pointer; }
.ymt-search-toggle { display: none; color: var(--color-primary-dark); }
.ymt-global-nav { border-top: 1px solid var(--color-border); }
.ymt-nav-scroll { display: grid; grid-template-columns: repeat(8, 1fr); min-height: 44px; }
.ymt-global-nav a { display: flex; align-items: center; justify-content: center; gap: 7px; border-right: 1px solid #e9eef5; font-size: 12px; font-weight: 700; white-space: nowrap; }
.ymt-global-nav a:first-child { border-left: 1px solid #e9eef5; }
.ymt-global-nav a:hover, .ymt-global-nav a.is-current { border-radius: 5px; background: var(--color-primary-dark); color: #fff; }