.tutorial-page-heading span {
    color: #0c817c;
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .14em;
    text-transform: uppercase;
}

.tutorial-page-heading h1 {
    margin: 3px 0 0;
    color: #17333c;
    font-weight: 800;
}

.tutorial-learning-hub {
    margin-bottom: 28px;
    color: #18333d;
}

.tutorial-hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    min-height: 190px;
    margin-bottom: 20px;
    padding: clamp(24px, 5vw, 48px);
    overflow: hidden;
    border-radius: 22px;
    background:
        radial-gradient(circle at 83% 18%, rgba(56, 208, 184, .28), transparent 25%),
        linear-gradient(130deg, #102f3a 0%, #0d5557 58%, #0f766e 100%);
    box-shadow: 0 20px 55px rgba(18, 59, 66, .18);
    color: #fff;
}

.tutorial-hero::after {
    content: '';
    position: absolute;
    right: -65px;
    bottom: -100px;
    width: 280px;
    height: 280px;
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 50%;
    box-shadow: 0 0 0 45px rgba(255, 255, 255, .035), 0 0 0 90px rgba(255, 255, 255, .025);
}

.tutorial-hero-copy { position: relative; z-index: 1; max-width: 680px; }

.tutorial-hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    color: #8de9dc;
    font-size: .75rem;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.tutorial-hero h2 {
    max-width: 650px;
    margin: 0 0 11px;
    color: #fff;
    font-size: clamp(1.55rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -.025em;
    line-height: 1.15;
}

.tutorial-hero p {
    max-width: 620px;
    margin: 0;
    color: rgba(239, 255, 252, .78);
    font-size: clamp(.92rem, 1.8vw, 1.05rem);
}

.tutorial-hero-stats {
    position: relative;
    z-index: 1;
    display: flex;
    flex: 0 0 auto;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .17);
    border-radius: 16px;
    background: rgba(5, 27, 32, .24);
    backdrop-filter: blur(10px);
}

.tutorial-hero-stats div { min-width: 88px; padding: 17px 14px; text-align: center; }
.tutorial-hero-stats div + div { border-left: 1px solid rgba(255, 255, 255, .13); }
.tutorial-hero-stats strong,
.tutorial-hero-stats span { display: block; }
.tutorial-hero-stats strong { color: #fff; font-size: 1.35rem; line-height: 1; }
.tutorial-hero-stats span { margin-top: 6px; color: rgba(235, 255, 251, .7); font-size: .68rem; font-weight: 700; text-transform: uppercase; }

.tutorial-workspace {
    display: grid;
    grid-template-columns: minmax(0, 1.65fr) minmax(320px, .75fr);
    align-items: start;
    gap: 20px;
}

.tutorial-player-card,
.tutorial-playlist-card,
.tutorial-public-empty {
    overflow: hidden;
    border: 1px solid #e1e9e8;
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 12px 42px rgba(27, 58, 67, .08);
}

.tutorial-video-shell {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #0e242c;
}

.tutorial-learning-hub .tutorial-video-shell iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.tutorial-video-poster {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    padding: 0;
    overflow: hidden;
    border: 0;
    background: #102d37;
    color: #fff;
    text-align: left;
    cursor: pointer;
}

.tutorial-video-poster:focus-visible { outline: 4px solid #48c9bb; outline-offset: -4px; }

.tutorial-video-image {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(145deg, rgba(9, 28, 35, .25), rgba(9, 28, 35, .75)), linear-gradient(135deg, #1f5965, #0d837b);
    background-position: center;
    background-size: cover;
    transition: transform .35s ease, filter .35s ease;
}

.tutorial-video-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(9, 24, 31, .12), rgba(9, 24, 31, .55));
}

.tutorial-learning-hub .tutorial-video-image img { width: 100%; height: 100%; object-fit: cover; }

.tutorial-video-poster:hover .tutorial-video-image { transform: scale(1.018); filter: brightness(.92); }

.tutorial-play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 1;
    display: grid;
    place-items: center;
    width: clamp(60px, 8vw, 82px);
    height: clamp(60px, 8vw, 82px);
    border: 1px solid rgba(255, 255, 255, .45);
    border-radius: 50%;
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 14px 40px rgba(0, 0, 0, .28);
    color: #0a716d;
    font-size: clamp(1.1rem, 3vw, 1.55rem);
    transform: translate(-50%, -50%);
    transition: transform .2s ease;
}

.tutorial-play-icon i { margin-left: 4px; }
.tutorial-video-poster:hover .tutorial-play-icon { transform: translate(-50%, -50%) scale(1.08); }

.tutorial-play-copy {
    position: absolute;
    right: 24px;
    bottom: 20px;
    left: 24px;
    z-index: 1;
}

.tutorial-play-copy small,
.tutorial-play-copy strong { display: block; }
.tutorial-play-copy small { color: rgba(255,255,255,.7); font-size: .68rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.tutorial-play-copy strong { margin-top: 2px; font-size: .95rem; }

.tutorial-player-content { padding: clamp(20px, 3vw, 30px); }

.tutorial-player-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 7px;
    margin-bottom: 11px;
}

.tutorial-player-meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 9px;
    border-radius: 999px;
    background: #edf7f5;
    color: #28736c;
    font-size: .7rem;
    font-weight: 800;
}

.tutorial-player-meta span:first-child { background: #e9f0f6; color: #4e6879; }

.tutorial-player-content h2 {
    margin: 0 0 10px;
    color: #18333d;
    font-size: clamp(1.28rem, 3vw, 1.8rem);
    font-weight: 800;
    letter-spacing: -.018em;
}

.tutorial-player-content > p { margin: 0; color: #667a82; line-height: 1.65; }

.tutorial-player-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 23px;
    padding-top: 18px;
    border-top: 1px solid #e8eeee;
}

.tutorial-player-actions .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 42px;
    border-radius: 10px;
    font-size: .82rem;
    font-weight: 800;
}

.tutorial-secondary-button { border: 1px solid #dce5e5; background: #fff; color: #4e676e; }
.tutorial-secondary-button:hover:not(:disabled) { background: #f0f6f5; color: #176d68; }
.tutorial-secondary-button:disabled { opacity: .42; }
.tutorial-complete-button { margin-left: auto; border: 1px solid #b9ded8; background: #eaf8f5; color: #16736a; }
.tutorial-complete-button.is-complete { border-color: #14786e; background: #14786e; color: #fff; }
.tutorial-icon-button { width: 42px; padding: 0; border: 1px solid #dce5e5; background: #fff; color: #64767c; }

.tutorial-playlist-card {
    position: sticky;
    top: 78px;
    max-height: calc(100vh - 100px);
}

.tutorial-playlist-header { padding: 20px 18px 14px; border-bottom: 1px solid #e7eded; }

.tutorial-progress-heading { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 8px; }
.tutorial-progress-heading div span,
.tutorial-progress-heading div strong { display: block; }
.tutorial-progress-heading div span { color: #819095; font-size: .68rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.tutorial-progress-heading div strong { margin-top: 2px; color: #28434c; font-size: .85rem; }
.tutorial-progress-heading > span { color: #0c8178; font-size: .78rem; font-weight: 800; }
.tutorial-progress-track { height: 6px; margin-bottom: 20px; border-radius: 999px; background: #e8efee; }
.tutorial-progress-track .progress-bar { border-radius: 999px; background: linear-gradient(90deg, #11867c, #32bba9); transition: width .25s ease; }

.tutorial-playlist-header h2 { margin: 0 0 11px; color: #203c46; font-size: 1.04rem; font-weight: 800; }

.tutorial-search {
    display: flex;
    align-items: center;
    gap: 9px;
    min-height: 42px;
    margin: 0;
    padding: 0 12px;
    border: 1px solid #dbe4e4;
    border-radius: 10px;
    background: #f9fbfb;
    color: #7e8b90;
}

.tutorial-search:focus-within { border-color: #65aaa4; box-shadow: 0 0 0 3px rgba(37, 139, 130, .11); }
.tutorial-search input { min-width: 0; flex: 1; border: 0; outline: 0; background: transparent; color: #29434d; font-size: .84rem; }
.tutorial-search button { padding: 5px; border: 0; background: transparent; color: #72838a; }

.tutorial-category-filters {
    display: flex;
    gap: 7px;
    margin-top: 11px;
    padding-bottom: 2px;
    overflow-x: auto;
    scrollbar-width: none;
}

.tutorial-category-filters::-webkit-scrollbar { display: none; }
.tutorial-category-filters button { flex: 0 0 auto; padding: 6px 11px; border: 1px solid #dce5e4; border-radius: 999px; background: #fff; color: #62777d; font-size: .71rem; font-weight: 800; }
.tutorial-category-filters button.active { border-color: #157e76; background: #157e76; color: #fff; }

.tutorial-playlist { max-height: calc(100vh - 335px); min-height: 180px; overflow-y: auto; overscroll-behavior: contain; scrollbar-color: #bdcfcc transparent; scrollbar-width: thin; }

.tutorial-lesson {
    position: relative;
    display: grid;
    grid-template-columns: 78px minmax(0, 1fr) 16px;
    align-items: center;
    gap: 11px;
    width: 100%;
    padding: 12px 14px;
    border: 0;
    border-bottom: 1px solid #edf1f1;
    background: #fff;
    color: #29434c;
    text-align: left;
    text-decoration: none;
    transition: background-color .15s ease;
}

.tutorial-lesson:hover { background: #f4f9f8; color: #29434c; text-decoration: none; }
.tutorial-lesson.active { background: #ebf7f5; box-shadow: inset 3px 0 #11837a; }
.tutorial-lesson:focus-visible { z-index: 1; outline: 3px solid rgba(25, 135, 125, .28); outline-offset: -3px; }
.tutorial-lesson[hidden] { display: none; }

.tutorial-lesson-thumb {
    position: relative;
    display: grid;
    place-items: center;
    width: 78px;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 8px;
    background: linear-gradient(135deg, #1a4b58, #108078);
    color: rgba(255,255,255,.88);
}

.tutorial-learning-hub .tutorial-lesson-thumb img { width: 100%; height: 100%; object-fit: cover; }
.tutorial-complete-mark { position: absolute; right: 4px; bottom: 4px; display: none; place-items: center; width: 19px; height: 19px; border: 2px solid #fff; border-radius: 50%; background: #168477; color: #fff; font-size: .52rem; }
.tutorial-lesson.is-complete .tutorial-complete-mark { display: grid; }

.tutorial-lesson-copy { min-width: 0; }
.tutorial-lesson-copy small,
.tutorial-lesson-copy strong,
.tutorial-lesson-copy > span { display: block; }
.tutorial-lesson-copy small { color: #879499; font-size: .64rem; font-weight: 700; }
.tutorial-lesson-copy strong { display: -webkit-box; overflow: hidden; margin-top: 2px; font-size: .79rem; line-height: 1.3; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.tutorial-lesson-copy > span { margin-top: 3px; overflow: hidden; color: #258177; font-size: .64rem; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
.tutorial-lesson-arrow { color: #a7b3b6; font-size: .66rem; }
.tutorial-lesson.active .tutorial-lesson-arrow { color: #177d75; }

.tutorial-no-results { padding: 38px 18px; color: #829095; text-align: center; }
.tutorial-no-results i,
.tutorial-no-results strong,
.tutorial-no-results span { display: block; }
.tutorial-no-results i { margin-bottom: 10px; color: #aab6b8; font-size: 1.4rem; }
.tutorial-no-results strong { color: #536970; }
.tutorial-no-results span { margin-top: 4px; font-size: .78rem; }

.tutorial-public-empty { margin-bottom: 20px; padding: 60px 20px; text-align: center; }
.tutorial-public-empty > span { display: grid; place-items: center; width: 76px; height: 76px; margin: 0 auto 18px; border-radius: 22px; background: #e8f5f3; color: #0d827b; font-size: 1.8rem; }
.tutorial-public-empty h2 { color: #203b45; font-size: 1.25rem; font-weight: 800; }
.tutorial-public-empty p { color: #73858b; }

.tutorial-reference {
    margin-top: 42px;
    padding-top: 2px;
}

.tutorial-reference-header {
    position: relative;
    margin-bottom: 20px;
    padding: clamp(21px, 4vw, 30px);
    overflow: hidden;
    border: 1px solid #d9e8e6;
    border-radius: 18px;
    background: linear-gradient(135deg, #f8fbfb 0%, #edf8f6 100%);
    box-shadow: 0 10px 34px rgba(27, 75, 75, .06);
}

.tutorial-reference-header::after {
    content: '';
    position: absolute;
    top: -85px;
    right: -55px;
    width: 210px;
    height: 210px;
    border-radius: 50%;
    background: rgba(23, 139, 128, .06);
}

.tutorial-reference-heading {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.tutorial-reference-icon {
    display: grid;
    place-items: center;
    flex: 0 0 48px;
    width: 48px;
    height: 48px;
    border-radius: 13px;
    background: #147d75;
    box-shadow: 0 8px 20px rgba(20, 125, 117, .2);
    color: #fff;
    font-size: 1.05rem;
}

.tutorial-reference-kicker {
    display: block;
    margin-bottom: 3px;
    color: #178178;
    font-size: .7rem;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.tutorial-reference-heading h2 {
    margin: 0 0 6px;
    color: #1d3a44;
    font-size: clamp(1.25rem, 3vw, 1.65rem);
    font-weight: 800;
    letter-spacing: -.015em;
}

.tutorial-reference-heading p {
    max-width: 760px;
    margin: 0;
    color: #647a80;
    line-height: 1.55;
}

.tutorial-reference-nav {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 9px;
    margin-top: 20px;
}

.tutorial-reference-nav a {
    display: flex;
    align-items: center;
    gap: 9px;
    min-height: 44px;
    padding: 9px 12px;
    border: 1px solid #d7e5e3;
    border-radius: 10px;
    background: rgba(255, 255, 255, .86);
    color: #405d64;
    font-size: .78rem;
    font-weight: 800;
    transition: border-color .16s ease, background-color .16s ease, color .16s ease, transform .16s ease;
}

.tutorial-reference-nav a i {
    display: grid;
    place-items: center;
    flex: 0 0 28px;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: #e8f4f2;
    color: #147d75;
}

.tutorial-reference-nav a:hover,
.tutorial-reference-nav a:focus,
.tutorial-reference-nav a.active {
    border-color: #5ca9a1;
    background: #fff;
    color: #116f68;
    text-decoration: none;
    transform: translateY(-1px);
}

.tutorial-reference-nav a:focus-visible {
    outline: 3px solid rgba(23, 129, 120, .2);
    outline-offset: 2px;
}

.tutorial-reference-card {
    scroll-margin-top: 88px;
    overflow: hidden;
    border-radius: 13px;
    box-shadow: 0 7px 25px rgba(30, 59, 68, .055);
    transition: box-shadow .2s ease, transform .2s ease;
}

.tutorial-reference-card .card-header {
    min-height: 56px;
    background: #fff;
}

.tutorial-reference-card .card-title {
    font-size: 1rem;
    font-weight: 800;
}

.tutorial-card-title-link {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: #27434c;
}

.tutorial-card-title-link:hover,
.tutorial-card-title-link:focus {
    color: #117970;
    text-decoration: none;
}

.tutorial-card-title-link:focus-visible {
    outline: 3px solid rgba(23, 129, 120, .2);
    outline-offset: 4px;
    border-radius: 3px;
}

.tutorial-card-link-icon {
    color: #95a6aa;
    font-size: .68rem;
    opacity: .55;
    transition: color .15s ease, opacity .15s ease, transform .15s ease;
}

.tutorial-card-title-link:hover .tutorial-card-link-icon,
.tutorial-card-title-link:focus .tutorial-card-link-icon {
    color: #117970;
    opacity: 1;
    transform: translateX(2px);
}

.tutorial-reference-card:target,
.tutorial-reference-card.is-fragment-target {
    box-shadow: 0 0 0 3px rgba(26, 143, 132, .2), 0 16px 42px rgba(23, 94, 91, .13);
    animation: tutorial-reference-focus 650ms ease-out;
}

@keyframes tutorial-reference-focus {
    0% { transform: translateY(0); }
    45% { transform: translateY(-3px); }
    100% { transform: translateY(0); }
}

/* Existing reference tables remain readable as stacked field cards on phones. */
@media screen and (max-width: 768px) {
    .mobile-table thead { display: none; }
    .mobile-table tr { display: block; margin-bottom: 1rem; border: 1px solid #dee2e6; border-radius: .5rem; background: #fff; }
    .mobile-table td { position: relative; display: block; min-height: 48px; padding-left: 47%; border-bottom: 1px solid #dee2e6; text-align: right; white-space: normal !important; }
    .mobile-table td:last-child { border-bottom: 0; }
    .mobile-table td::before { content: attr(data-label); position: absolute; left: 0; width: 43%; padding-left: 1rem; font-weight: 700; text-align: left; }
}

@media (max-width: 991.98px) {
    .tutorial-hero { align-items: flex-start; flex-direction: column; }
    .tutorial-workspace { grid-template-columns: 1fr; }
    .tutorial-playlist-card { position: static; max-height: none; }
    .tutorial-playlist { display: grid; grid-auto-columns: minmax(270px, 78vw); grid-auto-flow: column; max-height: none; padding: 10px; overflow-x: auto; overflow-y: hidden; scroll-snap-type: x proximity; }
    .tutorial-lesson { scroll-snap-align: start; min-height: 84px; border: 1px solid #e4ebea; border-radius: 10px; }
    .tutorial-no-results { grid-column: 1 / -1; }
}

@media (max-width: 767.98px) {
    .tutorial-reference-nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        grid-auto-flow: row;
        grid-auto-rows: 1fr;
        overflow: visible;
    }

    .tutorial-reference-nav a {
        width: 100%;
        min-width: 0;
        min-height: 58px;
        line-height: 1.25;
    }
}

@media (max-width: 575.98px) {
    .tutorial-hero { min-height: 0; padding: 24px 20px; border-radius: 16px; }
    .tutorial-hero-stats { align-self: stretch; }
    .tutorial-hero-stats div { flex: 1; min-width: 0; padding: 13px 7px; }
    .tutorial-hero-stats strong { font-size: 1.12rem; }
    .tutorial-hero-stats span { font-size: .59rem; }
    .tutorial-player-card,
    .tutorial-playlist-card { border-radius: 14px; }
    .tutorial-player-content { padding: 18px; }
    .tutorial-player-actions { flex-wrap: wrap; }
    .tutorial-secondary-button { flex: 1; }
    .tutorial-complete-button { order: 3; flex: 1 1 calc(100% - 50px); margin-left: 0; }
    .tutorial-icon-button { order: 4; }
    .tutorial-play-copy { right: 16px; bottom: 13px; left: 16px; }
    .tutorial-playlist-header { padding: 17px 14px 12px; }
    .tutorial-playlist {
        grid-auto-columns: calc(100% - 18px);
        gap: 10px;
        min-height: 0;
        padding: 8px;
    }
    .tutorial-lesson {
        grid-template-columns: 108px minmax(0, 1fr) 14px;
        align-items: center;
        min-height: 0;
        padding: 12px 13px;
    }
    .tutorial-lesson-thumb {
        width: 108px;
        border-radius: 9px;
    }
    .tutorial-lesson-copy strong {
        display: block;
        overflow: visible;
        font-size: .84rem;
        line-height: 1.35;
        overflow-wrap: anywhere;
        -webkit-line-clamp: initial;
    }
    .tutorial-lesson-copy small { font-size: .67rem; }
    .tutorial-lesson-copy > span { white-space: normal; }
    .tutorial-reference { margin-top: 30px; }
    .tutorial-reference-header { padding: 19px 16px 16px; border-radius: 14px; }
    .tutorial-reference-heading { gap: 12px; }
    .tutorial-reference-icon { flex-basis: 42px; width: 42px; height: 42px; }
    .tutorial-reference-heading p { font-size: .86rem; }
    .tutorial-reference-nav {
        gap: 8px;
        margin-right: 0;
        padding: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .tutorial-learning-hub *,
    .tutorial-learning-hub *::before,
    .tutorial-learning-hub *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}

.tutorial-app-links-intro {
    display: grid;
    gap: 16px;
}

.tutorial-app-links-intro h4 {
    margin: 0 0 6px;
    font-size: 1.05rem;
    font-weight: 700;
}

.tutorial-app-links-intro p {
    margin: 0;
}

.tutorial-app-link-base,
.tutorial-app-link-example {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 12px;
    padding: 13px 15px;
    border: 1px solid #dce6e4;
    border-radius: 10px;
    background: #f7faf9;
}

.tutorial-app-link-base > span,
.tutorial-app-link-example > strong {
    color: #49605b;
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .05em;
    text-transform: uppercase;
}

.tutorial-app-link-base code,
.tutorial-app-link-example code {
    overflow-wrap: anywhere;
    word-break: break-word;
}

.tutorial-app-link-example code {
    flex-basis: 100%;
}

.tutorial-app-link-steps {
    margin: 0;
    padding-left: 1.25rem;
}

.tutorial-app-link-steps li + li {
    margin-top: 6px;
}

.tutorial-app-link-note {
    padding: 12px 14px;
    border-left: 3px solid #5f7d8c;
    border-radius: 0 8px 8px 0;
    background: rgba(95, 125, 140, .09);
}

.tutorial-app-links-table code {
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.tutorial-config-aliases {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.tutorial-config-aliases code {
    display: block;
    padding: 10px 12px;
    border: 1px solid #dce6e4;
    border-radius: 8px;
    background: #f7faf9;
    overflow-wrap: anywhere;
    word-break: break-word;
}

@media (max-width: 575.98px) {
    .tutorial-config-aliases {
        grid-template-columns: 1fr;
    }
}