.dm-brand-header { height: 80px; background: rgba(0, 0, 0, .9); color: #fff; position: sticky; top: 0; z-index: 997; }
.dm-brand-header__inner { width: 100%; max-width: 1320px; padding: 0 12px; margin: auto; height: 100%; display: flex; align-items: center; gap: 24px; }
.dm-brand-header__logo { margin-right: auto; color: #fff; text-decoration: none; font: 700 36px/1 "Poppins", sans-serif; white-space: nowrap; }
.dm-brand-header__logo:hover { color: #fff; }
.dm-brand-header__menu { display: flex; align-items: center; gap: 30px; }
.dm-brand-header__menu a { position: relative; color: rgba(255,255,255,.7); text-decoration: none; white-space: nowrap; font: 400 16px/1.5 "Poppins", sans-serif; }
.dm-brand-header__menu a:hover, .dm-brand-header__menu .active { color: #fff; }
.dm-brand-header__menu a:hover::before, .dm-brand-header__menu .active::before { content: ""; position: absolute; width: 25px; height: 2px; bottom: -4px; left: 0; background: #ff8600; }
.dm-brand-header__toggle { display: none; }
body.admin-bar .dm-brand-header { top: 32px; }
@media (max-width: 1399px) { .dm-brand-header__inner { max-width: 1140px; } }
@media (max-width: 1199px) {
    .dm-brand-header__inner { max-width: 960px; }
    .dm-brand-header__toggle { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; flex-shrink: 0; border: 0; background: transparent; cursor: pointer; }
    .dm-brand-header__toggle span { width: 26px; height: 2px; background: #fff; }
    .dm-brand-header__menu { display: none; position: absolute; left: 12px; right: 12px; top: 100%; padding: 24px; background: #111; flex-direction: column; align-items: flex-start; gap: 24px; }
    .dm-brand-header__menu.is-open { display: flex; }
}
@media (max-width: 768px) {
    .dm-brand-header { height: 60px; }
    .dm-brand-header__logo { font-size: clamp(18px, 5.3vw, 26px); }
    .dm-brand-header__inner { gap: 8px; }
}
@media (max-width: 782px) { body.admin-bar .dm-brand-header { top: 46px; } }
@media (max-width: 600px) { body.admin-bar .dm-brand-header { top: 0; } }
/* 広告用フォーム・サンクスはロゴのみ。ロゴの配置は共通のまま維持。 */
body:has(> .dm-form-page, > .dm-thanks) .dm-brand-header__menu,
body:has(> .dm-form-page, > .dm-thanks) .dm-brand-header__toggle { display: none; }