.main-nav > a.is-active:not(.button) { color: var(--navy); }
.main-nav > a.is-active:not(.button)::after { right: 0; }

.archive-hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 86px;
  background: linear-gradient(120deg, #071d2e 0%, var(--navy) 55%, #164f68 100%);
  color: var(--white);
}
.archive-hero::before,
.archive-hero::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(143, 228, 224, .18);
  border-radius: 50%;
}
.archive-hero::before { width: 430px; height: 430px; right: -180px; top: -250px; }
.archive-hero::after { width: 260px; height: 260px; right: 70px; bottom: -185px; }
.archive-hero-grid { position: relative; z-index: 1; }
.archive-hero-grid-simple { max-width: 980px; margin-inline: auto; }
.archive-hero h1 { max-width: 840px; margin: 0; font-size: clamp(2.8rem, 5.4vw, 5.2rem); line-height: 1.02; letter-spacing: -.055em; }

.archive-section { padding-top: 52px; background: var(--ice); }

.archive-gate-section { padding: 64px 0 92px; background: var(--ice); }
.archive-gate-card { max-width: 590px; margin: 0 auto; padding: clamp(28px, 5vw, 46px); border: 1px solid var(--line); border-radius: 22px; background: var(--white); box-shadow: 0 18px 55px rgba(11,41,66,.09); }
.archive-gate-card h2 { margin: 0; color: var(--navy); font-size: clamp(2rem, 4vw, 2.75rem); line-height: 1.08; letter-spacing: -.04em; }
.archive-gate-intro { max-width: 470px; margin: 16px 0 28px; color: var(--muted); line-height: 1.7; }
.archive-gate-form label { display: block; margin-bottom: 8px; color: var(--navy); font-size: .72rem; font-weight: 850; letter-spacing: .05em; text-transform: uppercase; }
.archive-gate-form input { width: 100%; height: 58px; padding: 0 17px; border: 1px solid var(--line); border-radius: 11px; background: var(--white); color: var(--ink); font-size: 1.15rem; letter-spacing: .16em; transition: border-color .2s ease, box-shadow .2s ease; }
.archive-gate-form input:hover { border-color: #aec5cf; }
.archive-gate-form input:focus { border-color: var(--teal-dark); outline: 0; box-shadow: 0 0 0 4px rgba(33,169,171,.16); }
.archive-gate-form input[aria-invalid="true"] { border-color: #b74949; }
.archive-gate-help { margin: 8px 0 0; color: var(--muted); font-size: .78rem; }
.archive-gate-error { margin: 12px 0 0; padding: 12px 14px; border-left: 3px solid #b74949; border-radius: 7px; background: #fff2f2; color: #842f2f; font-size: .82rem; line-height: 1.5; }
.archive-gate-submit { width: 100%; margin-top: 22px; }

.archive-search-simple { max-width: 760px; margin-bottom: 38px; padding: 22px; border: 1px solid var(--line); border-radius: 18px; background: var(--white); box-shadow: 0 16px 45px rgba(11,41,66,.07); }
.archive-search label { display: block; margin-bottom: 8px; color: var(--navy); font-size: .7rem; font-weight: 850; letter-spacing: .04em; text-transform: uppercase; }
.search-input-wrap { position: relative; }
.search-input-wrap svg { position: absolute; top: 50%; left: 16px; width: 19px; height: 19px; transform: translateY(-50%); fill: none; stroke: var(--teal-dark); stroke-linecap: round; stroke-width: 2; }
.archive-search input { width: 100%; height: 54px; padding: 0 16px 0 46px; border: 1px solid var(--line); border-radius: 11px; background: var(--white); color: var(--ink); }
.archive-search input::placeholder { color: #718692; }
.archive-search input:hover { border-color: #aec5cf; }

.archive-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 24px; }
.archive-material { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: var(--white); box-shadow: 0 12px 36px rgba(11,41,66,.075); }
.archive-material[hidden] { display: none; }
.archive-material-player { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--navy); }
.archive-player-cover { position: relative; display: block; width: 100%; height: 100%; padding: 0; border: 0; background: var(--navy); cursor: pointer; }
.archive-player-cover img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease, filter .35s ease; }
.archive-player-cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 45%, rgba(7,29,46,.28)); transition: background .25s ease; }
.archive-player-play { position: absolute; z-index: 1; top: 50%; left: 50%; display: grid; width: 66px; height: 66px; place-items: center; padding-left: 4px; transform: translate(-50%, -50%); border-radius: 50%; background: var(--teal); color: var(--white); font-size: 1.45rem; box-shadow: 0 12px 30px rgba(7,29,46,.35); transition: transform .25s ease, background .25s ease; }
.archive-player-cover:hover img { transform: scale(1.025); filter: brightness(.88); }
.archive-player-cover:hover .archive-player-play { transform: translate(-50%, -50%) scale(1.08); background: var(--teal-dark); }
.archive-player-cover:focus-visible { outline: 4px solid var(--teal); outline-offset: -4px; }
.archive-player-cover:focus-visible .archive-player-play { transform: translate(-50%, -50%) scale(1.08); }
.archive-material-player iframe { display: block; width: 100%; height: 100%; border: 0; }
.archive-material-content { min-height: 172px; padding: 24px 25px 27px; }
.archive-material-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-bottom: 13px; }
.archive-material-meta time { color: var(--teal-dark); font-size: .7rem; font-weight: 900; letter-spacing: .05em; text-transform: uppercase; }
.archive-material-meta span { padding: 4px 8px; border-radius: 999px; background: var(--aqua); color: var(--teal-dark); font-size: .59rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.archive-material h2 { margin: 0; color: var(--navy); font-size: 1.06rem; line-height: 1.5; letter-spacing: -.015em; }
.archive-material-topics { display: grid; gap: 10px; margin: 13px 0 0; padding: 0; list-style: none; }
.archive-material-topics li { position: relative; padding-left: 20px; color: var(--ink); font-size: .83rem; line-height: 1.55; }
.archive-material-topics li::before { content: ""; position: absolute; top: .65em; left: 0; width: 7px; height: 7px; border: 2px solid var(--teal); border-radius: 50%; }
.archive-empty { padding: 70px 25px; border: 1px dashed #b6cbd4; border-radius: 16px; background: rgba(255,255,255,.58); text-align: center; }
.archive-empty h3 { margin: 0; color: var(--navy); font-size: 1.5rem; }
.archive-empty p { margin: 9px auto 24px; color: var(--muted); }
.archive-noscript { padding: 18px; border-radius: 12px; background: #fff4e9; color: var(--navy); }

@media (max-width: 920px) {
  .archive-hero-grid-simple { max-width: none; margin-left: auto; }
}

@media (max-width: 760px) {
  .archive-hero { padding: 66px 0; }
  .archive-list { grid-template-columns: 1fr; }
  .archive-material-content { min-height: 0; }
}

@media (max-width: 520px) {
  .archive-hero h1 { font-size: 2.7rem; }
  .archive-gate-section { padding: 38px 0 64px; }
  .archive-gate-card { padding: 26px 20px; border-radius: 18px; }
  .archive-search-simple { padding: 16px; }
  .archive-material-content { padding: 21px 20px 24px; }
}