/* Tutorials: current Home blueprint tokens, dedicated video composition. */
.tutorials-page { --accent: #00e4ef; --accent-strong: #58f5ff; --text-muted: #b1c6dd; background: #00101e; }
.tutorials-page .container { width: calc(100% - 68px); max-width: 1380px; }
/* Effective Home header values; no Home body stylesheet or obsolete media cards. */
.tutorials-page .site-header { background: rgba(0,15,29,.95); border-bottom: 1px solid #0d354a; backdrop-filter: blur(18px); }
.tutorials-page .header-inner { min-height: 78px; grid-template-columns: auto 1fr auto; gap: 20px; }
.tutorials-page .brand-mark { border-radius: 12px; border-color: #00cee0; }
.tutorials-page .site-header .brand-text { font-size: 21px; }
.tutorials-page .brand-subtext { color: #d3e2ef; font-size: 12px; }
.tutorials-page .site-nav { gap: 25px; }
.tutorials-page .site-nav a { font-size: 14px; white-space: nowrap; }
.tutorials-page .site-nav a.is-active { color: var(--accent); text-decoration: underline; text-underline-offset: 10px; }
.tutorials-page .header-actions { gap: 10px; }
.tutorials-page .header-actions .btn { padding: 10px 14px; font-size: 14px; min-height: 42px; border-radius: 9px; white-space: nowrap; }
.tutorials-page .header-actions .lang-toggle { min-width: 48px; }
.tutorials-page .btn-primary { background: #00e4ef; border: 1px solid #37f1fb; color: #001321; box-shadow: 0 4px 24px #00dcec20; }
.tutorials-page .btn-primary:hover { background: #62f4ff; }
.tutorials-page .btn-secondary, .tutorials-page .btn-ghost { background: #001321b8; border: 1px solid #116080; color: #f0f7ff; }
.tutorials-page .btn-secondary { border-color: #00d9e8; }
.tutorials-page :is(a,button,summary):focus-visible { outline: 3px solid #68f5ff; outline-offset: 4px; }

.tutorials-hero { position: relative; background: linear-gradient(90deg,#00101ef5 5%,#00101ec4 48%,#00101e26),url('/assets/home-hero-background.webp') center 44% / cover no-repeat; }
.tutorials-hero::before { content: ''; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(0deg,#00101e,transparent 38%); }
.tutorials-hero-inner { position: relative; padding: 42px 0 34px; text-shadow: 0 2px 14px #00101e; }
.tutorials-eyebrow { margin: 0 0 12px; color: #26f4ff; font-size: 11px; font-weight: 700; letter-spacing: .18em; line-height: 1.5; }
.tutorials-hero h1 { max-width: 23ch; margin: 0 0 16px; color: #fff; font-size: clamp(38px,3.75vw,54px); font-weight: 800; letter-spacing: -.045em; line-height: 1.03; }
.tutorials-lead { max-width: 65ch; margin: 0; color: #eff5ff; font-size: 16px; line-height: 1.45; }
.tutorials-channel { position: absolute; bottom: 34px; right: 0; min-height: 44px; padding: 10px 14px; border-radius: 9px; font-size: 14px; text-shadow: none; }
.tutorials-grid { position: relative; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; padding: 0 0 24px; }
.tutorial-card { display: flex; flex-direction: column; min-width: 0; padding: 9px; background: #001422; border: 1px solid #08718d; border-radius: 9px; box-shadow: inset 0 1px 0 #72dfff12; }
.tutorial-thumbnail { position: relative; aspect-ratio: 16 / 9; flex-shrink: 0; background: #001420; border: 1px solid #39bcd3; border-radius: 6px; box-shadow: 0 0 12px #00dcf133; }
.tutorial-thumbnail img { width: 100%; height: 100%; object-fit: contain; border-radius: 5px; }
.tutorial-category { position: absolute; left: 10px; top: 10px; padding: 5px 7px; background: #001422ed; border: 1px solid #08718d; border-radius: 4px; color: #58f5ff; font-size: 10px; font-weight: 700; letter-spacing: .1em; line-height: 1.3; pointer-events: none; }
.tutorial-play { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%,-50%); display: grid; place-items: center; width: 60px; height: 60px; border: 1px solid #39bcd3; border-radius: 50%; background: #001420e8; color: #58f5ff; box-shadow: 0 0 18px #00dcf126; transition: background 180ms ease,border-color 180ms ease,box-shadow 180ms ease; }
.tutorial-play svg { width: 30px; height: 30px; }
.tutorial-play:hover, .tutorial-play:focus-visible { background: #003348; border-color: #58f5ff; box-shadow: 0 0 22px #00dcf14d; }
.tutorial-card-body { display: flex; flex: 1; flex-direction: column; padding: 18px 9px 9px; }
.tutorial-card h2 { margin: 0 0 10px; color: #f4f7ff; font-size: 25px; line-height: 1.15; letter-spacing: -.03em; }
.tutorial-description { margin: 0 0 16px; color: #dceaf7; font-size: 15px; line-height: 1.5; }
.tutorial-version { margin: auto 0 13px; display: flex; align-items: center; gap: 7px; color: #b1c6dd; font-size: 12px; line-height: 1.5; }
.tutorial-version::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: #d8b04e; }
.tutorial-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 14px; }
.tutorial-actions .btn { min-height: 44px; padding: 10px 14px; border-radius: 9px; font-size: 14px; line-height: 1.3; }
.tutorial-actions .btn > [aria-hidden] { font-size: 20px; }
.tutorial-text-link { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; color: #00f0f5; font-size: 13px; font-weight: 600; text-decoration: underline; text-underline-offset: 7px; }
.tutorial-text-link:hover { color: #58f5ff; }

/* Native dialog isolates keyboard focus, including the cross-origin player. */
.tutorial-dialog { position: fixed; inset: 0; padding: 0; margin: auto; width: min(94vw,1500px,calc((90dvh - 58px) * 16 / 9 + 2px)); max-width: none; max-height: 90dvh; overflow: visible; background: #001420; color: #eaf4ff; border: 1px solid #39bcd3; border-radius: 11px; box-shadow: 0 0 6px #34dfed66,0 0 28px #04c5e926; }
.tutorial-dialog::backdrop { background: rgba(4,10,18,.72); backdrop-filter: blur(10px); }
.tutorial-dialog-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; padding: 6px 8px 6px 18px; }
.tutorial-dialog-heading h2 { margin: 0; min-width: 0; font-size: 16px; line-height: 1.3; font-weight: 600; }
.tutorial-close { display: grid; place-items: center; flex: 0 0 44px; width: 44px; height: 44px; border: 1px solid #09445c; border-radius: 9px; background: #ffffff04; color: #eff6ff; font-size: 30px; line-height: 1; }
.tutorial-close:hover { background: #042338; border-color: #00acbf; }
.tutorial-player-slot { width: 100%; aspect-ratio: 16 / 9; background: #000; border-radius: 0 0 10px 10px; overflow: hidden; }
.tutorial-player-slot iframe { display: block; width: 100%; height: 100%; border: 0; }
.tutorials-page.tutorial-player-open { overflow: hidden; padding-right: var(--tutorial-scrollbar,0px); }

@media (min-width: 1181px) and (max-width: 1370px) {
  .tutorials-page .header-inner { gap: 12px; }
  .tutorials-page .site-nav { gap: 14px; }
  .tutorials-page .site-header .brand-text { font-size: 18px; }
  .tutorials-page .brand-subtext { font-size: 10px; }
  .tutorials-page .header-actions .btn { padding-inline: 10px; font-size: 13px; }
}
@media (max-width: 1180px) {
  .tutorials-page .container { width: calc(100% - 40px); }
  .tutorials-page .header-inner { grid-template-columns: 1fr auto auto; }
  .tutorials-page .nav-toggle { grid-column: 3; grid-row: 1; }
  .tutorials-page .header-actions { grid-column: 2; grid-row: 1; }
  .tutorials-page .site-nav { gap: 0; top: 78px; }
  .tutorial-card h2 { font-size: 23px; }
  .tutorial-description { font-size: 14px; }
  .tutorials-channel { position: static; margin-top: 18px; }
}
@media (max-width: 980px) {
  .tutorials-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 900px) {
  .tutorials-page .header-inner { padding: 10px 0; }
  .tutorials-page .header-actions { flex-wrap: nowrap; }
  .tutorials-page .site-header .brand-subtext { display: none; }
}
@media (max-width: 640px) {
  .tutorials-page .container { width: calc(100% - 28px); }
  .tutorials-page .header-inner { grid-template-columns: 1fr auto; min-height: 100px; padding: 8px 0; gap: 6px; }
  .tutorials-page .header-inner > .brand { grid-column: 1; grid-row: 1; }
  .tutorials-page .site-header .brand-text { font-size: 19px; }
  .tutorials-page .site-header .brand-mark { width: 36px; height: 36px; border-radius: 9px; }
  .tutorials-page .nav-toggle { grid-column: 2; grid-row: 1; width: 40px; height: 40px; }
  .tutorials-page .header-actions { grid-column: 1 / -1; grid-row: 2; width: 100%; justify-content: flex-end; gap: 10px; }
  .tutorials-page .header-actions .btn { width: auto; min-width: 44px; min-height: 37px; font-size: 12px; padding: 7px 11px; }
  .tutorials-page .header-actions .lang-toggle { margin-right: auto; min-width: 48px; }
  .tutorials-page .site-nav { top: 102px; width: calc(100% - 28px); right: 14px; max-height: calc(100dvh - 132px); overflow-y: auto; }
  .tutorials-hero { background-position: 65% center; }
  .tutorials-hero-inner { padding: 28px 0 25px; }
  .tutorials-eyebrow { font-size: 9px; letter-spacing: .12em; }
  .tutorials-hero h1 { font-size: 38px; line-height: 1.02; margin-bottom: 14px; }
  .tutorials-lead { font-size: 14px; line-height: 1.5; }
  .tutorials-grid { grid-template-columns: 1fr; gap: 10px; padding-bottom: 18px; }
  .tutorial-card { padding: 8px; }
  .tutorial-card-body { padding: 16px 5px 5px; }
  .tutorial-card h2 { font-size: 22px; }
  .tutorial-play { width: 52px; height: 52px; }
  .tutorial-actions { gap: 4px 10px; }
  .tutorial-actions .btn { font-size: 13px; padding: 10px 12px; }
  .tutorial-text-link { font-size: 12px; }
  .tutorial-dialog { width: min(calc(100vw - 24px),calc((90dvh - 58px) * 16 / 9 + 2px)); }
  .tutorial-dialog-heading { padding-left: 12px; }
  .tutorial-dialog-heading h2 { font-size: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .tutorials-page *, .tutorials-page *::before, .tutorials-page *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}