:root {
    --amber-guide-ink: #17191d;
    --amber-guide-muted: #6f747d;
    --amber-guide-line: #dde0e5;
    --amber-guide-paper: #f4f5f6;
    --amber-guide-accent: #e7b84b;
    --amber-guide-accent-deep: #bd8520;
}

.amber-tutorial-page {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 42px 0 78px;
    color: var(--amber-guide-ink);
}

.amber-tutorial-hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr);
    min-height: 350px;
    overflow: hidden;
    border: 1px solid #24272c;
    border-radius: 28px;
    background: #15171a;
    color: #fff;
    box-shadow: 0 24px 70px rgba(20, 22, 25, .18);
}

.amber-tutorial-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .28;
    background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
    background-size: 32px 32px;
    mask-image: linear-gradient(90deg, #000, transparent 82%);
}

.amber-tutorial-hero__copy {
    position: relative;
    z-index: 2;
    align-self: center;
    padding: 58px 64px;
}

.amber-tutorial-kicker,
.amber-tutorial-section-label {
    display: inline-block;
    color: var(--amber-guide-accent);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .2em;
}

.amber-tutorial-hero h1 {
    max-width: 640px;
    margin: 13px 0 15px;
    font-family: "Noto Serif SC", "Songti SC", serif;
    font-size: clamp(42px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -.04em;
}

.amber-tutorial-hero p {
    max-width: 560px;
    margin: 0;
    color: rgba(255,255,255,.68);
    font-size: 17px;
    line-height: 1.8;
}

.amber-tutorial-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.amber-tutorial-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 44px;
    padding: 0 20px;
    border: 1px solid rgba(255,255,255,.24);
    border-radius: 999px;
    background: rgba(255,255,255,.06);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.amber-tutorial-action:hover {
    transform: translateY(-2px);
    border-color: rgba(255,255,255,.52);
    color: #fff;
}

.amber-tutorial-action--primary {
    border-color: var(--amber-guide-accent);
    background: var(--amber-guide-accent);
    color: #1e1a10;
}

.amber-tutorial-action--primary:hover {
    border-color: #f1c966;
    background: #f1c966;
    color: #1e1a10;
}

.amber-tutorial-hero__visual {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 320px;
}

.amber-tutorial-compass {
    position: relative;
    z-index: 2;
    display: grid;
    place-items: center;
    width: 178px;
    height: 178px;
    border: 1px solid rgba(255,255,255,.24);
    border-radius: 50%;
    background: rgba(255,255,255,.06);
    box-shadow: inset 0 0 0 16px rgba(255,255,255,.02), 0 20px 60px rgba(0,0,0,.25);
    backdrop-filter: blur(10px);
}

.amber-tutorial-compass > span {
    position: absolute;
    top: 23px;
    color: var(--amber-guide-accent);
    font: 800 12px/1 monospace;
    letter-spacing: .18em;
}

.amber-tutorial-compass i { font-size: 52px; color: #fff; }
.amber-tutorial-compass small { position: absolute; bottom: 24px; color: rgba(255,255,255,.5); font-size: 9px; letter-spacing: .18em; }

.amber-tutorial-orbit {
    position: absolute;
    border: 1px solid rgba(231,184,75,.35);
    border-radius: 50%;
    animation: amber-guide-spin 16s linear infinite;
}
.amber-tutorial-orbit::after { content: ""; position: absolute; top: -4px; left: 50%; width: 8px; height: 8px; border-radius: 50%; background: var(--amber-guide-accent); }
.amber-tutorial-orbit--one { width: 250px; height: 250px; }
.amber-tutorial-orbit--two { width: 320px; height: 320px; animation-direction: reverse; animation-duration: 22s; opacity: .45; }
@keyframes amber-guide-spin { to { transform: rotate(360deg); } }

.amber-tutorial-toolbar {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 28px;
    padding: 58px 4px 24px;
}

.amber-tutorial-toolbar h2,
.amber-tutorial-help h2 {
    margin: 7px 0 0;
    font-family: "Noto Serif SC", "Songti SC", serif;
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 800;
}

.amber-tutorial-filters { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.amber-tutorial-filters button {
    padding: 9px 15px;
    border: 1px solid var(--amber-guide-line);
    border-radius: 999px;
    background: #fff;
    color: var(--amber-guide-muted);
    font-size: 13px;
    font-weight: 700;
    transition: .2s ease;
}
.amber-tutorial-filters button:hover,
.amber-tutorial-filters button.is-active { border-color: var(--amber-guide-ink); background: var(--amber-guide-ink); color: #fff; }

.amber-tutorial-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; }
.amber-tutorial-card {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--amber-guide-line);
    border-radius: 22px;
    background: #fff;
    transition: transform .25s ease, box-shadow .25s ease, opacity .2s ease;
}
.amber-tutorial-card:hover { transform: translateY(-3px); box-shadow: 0 18px 48px rgba(32,36,42,.1); }
.amber-tutorial-card:target { border-color: var(--amber-guide-accent-deep); box-shadow: 0 0 0 4px rgba(231,184,75,.2), 0 18px 48px rgba(32,36,42,.1); }
.amber-tutorial-card.is-filtered-out { display: none; }
.amber-tutorial-card__head { display: grid; grid-template-columns: 58px minmax(0,1fr) 38px; gap: 18px; align-items: start; padding: 28px; }
.amber-tutorial-card__number { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 17px; background: var(--amber-guide-paper); color: var(--amber-guide-accent-deep); font: 800 16px/1 monospace; }
.amber-tutorial-card__category { color: var(--amber-guide-accent-deep); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.amber-tutorial-card h2 { margin: 6px 0 8px; font-size: 21px; font-weight: 800; line-height: 1.35; }
.amber-tutorial-card__head p { margin: 0; color: var(--amber-guide-muted); font-size: 14px; line-height: 1.75; }
.amber-tutorial-card__toggle { display: grid; place-items: center; width: 36px; height: 36px; border: 1px solid var(--amber-guide-line); border-radius: 50%; background: #fff; color: var(--amber-guide-ink); transition: .2s ease; }
.amber-tutorial-card__type { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: #fff6df; color: var(--amber-guide-accent-deep); }
.amber-tutorial-card.is-collapsed .amber-tutorial-card__toggle { transform: rotate(180deg); }
.amber-tutorial-card__body { padding: 0 28px 28px 104px; }
.amber-tutorial-card__body--link { padding-top: 0; }
.amber-tutorial-card__body--link .amber-tutorial-card__link { margin-top: 0; padding: 12px 18px; border-radius: 999px; background: var(--amber-guide-ink); color: #fff; }
.amber-tutorial-card__body--link .amber-tutorial-card__link:hover { color: #fff; background: var(--amber-guide-accent-deep); }
.amber-tutorial-card.is-collapsed .amber-tutorial-card__body { display: none; }
.amber-tutorial-steps { display: grid; gap: 13px; margin: 0; padding: 20px 0 0; border-top: 1px solid var(--amber-guide-line); list-style: none; }
.amber-tutorial-steps li { display: grid; grid-template-columns: 28px minmax(0,1fr); gap: 12px; align-items: start; }
.amber-tutorial-steps li > span { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: #fff6df; color: var(--amber-guide-accent-deep); font: 800 11px/1 monospace; }
.amber-tutorial-steps p { margin: 2px 0 0; color: #494e57; font-size: 14px; line-height: 1.75; white-space: pre-line; }
.amber-tutorial-card__link { display: inline-flex; align-items: center; gap: 9px; margin-top: 20px; color: var(--amber-guide-ink); font-size: 13px; font-weight: 800; }
.amber-tutorial-card__link i { transition: transform .2s ease; }
.amber-tutorial-card__link:hover { color: var(--amber-guide-accent-deep); }
.amber-tutorial-card__link:hover i { transform: translateX(4px); }

.amber-tutorial-help {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    margin-top: 28px;
    padding: 34px 40px;
    border-radius: 22px;
    background: var(--amber-guide-paper);
}
.amber-tutorial-help p { margin: 8px 0 0; color: var(--amber-guide-muted); }
.amber-tutorial-help .amber-tutorial-action { flex: 0 0 auto; }
.amber-tutorial-empty { grid-column: 1 / -1; padding: 70px 20px; border: 1px dashed var(--amber-guide-line); border-radius: 22px; text-align: center; }
.amber-tutorial-empty i { color: var(--amber-guide-accent-deep); font-size: 42px; }
.amber-tutorial-empty h2 { margin: 18px 0 8px; }
.amber-tutorial-empty p { color: var(--amber-guide-muted); }

@media (max-width: 900px) {
    .amber-tutorial-hero { grid-template-columns: 1fr; }
    .amber-tutorial-hero__copy { padding: 44px 36px 18px; }
    .amber-tutorial-hero__visual { min-height: 250px; }
    .amber-tutorial-grid { grid-template-columns: 1fr; }
    .amber-tutorial-toolbar { align-items: flex-start; flex-direction: column; }
    .amber-tutorial-filters { justify-content: flex-start; }
}

@media (max-width: 575px) {
    .amber-tutorial-page { width: min(100% - 24px, 1180px); padding-top: 20px; }
    .amber-tutorial-hero { border-radius: 20px; }
    .amber-tutorial-hero__copy { padding: 34px 24px 12px; }
    .amber-tutorial-hero__visual { min-height: 220px; }
    .amber-tutorial-compass { width: 142px; height: 142px; }
    .amber-tutorial-orbit--one { width: 198px; height: 198px; }
    .amber-tutorial-orbit--two { width: 245px; height: 245px; }
    .amber-tutorial-toolbar { padding-top: 40px; }
    .amber-tutorial-card__head { grid-template-columns: 46px minmax(0,1fr) 34px; gap: 12px; padding: 22px 18px; }
    .amber-tutorial-card__number { width: 46px; height: 46px; border-radius: 14px; }
    .amber-tutorial-card__body { padding: 0 18px 22px; }
    .amber-tutorial-help { align-items: flex-start; flex-direction: column; padding: 28px 24px; }
    .amber-tutorial-help .amber-tutorial-action { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .amber-tutorial-orbit { animation: none; }
    .amber-tutorial-card,
    .amber-tutorial-action { transition: none; }
}