.propeller-guide {
    --guide-ink: #14202b;
    --guide-muted: #536270;
    --guide-line: rgba(20, 32, 43, .14);
    --guide-paper: #f5f2eb;
    --guide-card: #fffdf8;
    --guide-gold: #b38b3f;
    background: var(--guide-paper);
    color: var(--guide-ink);
    overflow: hidden;
}

.dark .propeller-guide {
    --guide-ink: #eef2f5;
    --guide-muted: #aeb9c3;
    --guide-line: rgba(255, 255, 255, .13);
    --guide-paper: #0b1118;
    --guide-card: #111a23;
    --guide-gold: #d6be83;
}

.guide-shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.guide-kicker { color: var(--guide-gold); font-size: .76rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.guide-lead { color: var(--guide-muted); font-size: clamp(1.02rem, 1.8vw, 1.25rem); line-height: 1.75; }

.guide-hero {
    min-height: 650px;
    padding: 150px 0 90px;
    display: grid;
    align-items: end;
    position: relative;
    color: #fff;
    isolation: isolate;
}

.guide-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -2;
    background: url('../assets/shop/category-e-series.webp') center 42% / cover no-repeat;
}

.guide-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(90deg, rgba(3, 8, 13, .93) 0%, rgba(3, 8, 13, .72) 53%, rgba(3, 8, 13, .35) 100%), linear-gradient(0deg, rgba(3, 8, 13, .76), transparent 65%);
}

.guide-breadcrumb { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: 34px; color: rgba(255,255,255,.72); font-size: .82rem; }
.guide-breadcrumb a { color: #fff; text-decoration: none; }
.guide-hero h1 { max-width: 870px; margin: 12px 0 24px; font-family: 'Barlow Condensed', sans-serif; font-size: clamp(3.2rem, 8vw, 7.2rem); font-weight: 800; letter-spacing: -.035em; line-height: .88; text-transform: uppercase; }
.guide-hero p { max-width: 760px; margin: 0; color: rgba(255,255,255,.87); font-size: clamp(1rem, 2vw, 1.25rem); line-height: 1.7; }
.guide-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.guide-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 0 22px; border: 1px solid rgba(255,255,255,.35); color: #fff; font-size: .83rem; font-weight: 800; letter-spacing: .08em; text-decoration: none; text-transform: uppercase; transition: .2s ease; }
.guide-button--gold { border-color: var(--guide-gold); background: var(--guide-gold); color: #111820; }
.guide-button:hover { transform: translateY(-2px); border-color: #fff; }

.guide-proof { position: relative; z-index: 2; margin-top: -34px; }
.guide-proof__grid { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--guide-card); border: 1px solid var(--guide-line); box-shadow: 0 22px 70px rgba(0,0,0,.16); }
.guide-proof__item { min-height: 132px; padding: 26px 24px; border-right: 1px solid var(--guide-line); }
.guide-proof__item:last-child { border-right: 0; }
.guide-proof__item strong { display: block; color: var(--guide-ink); font: 800 clamp(1.8rem, 4vw, 3rem)/1 'Barlow Condensed', sans-serif; }
.guide-proof__item span { display: block; margin-top: 10px; color: var(--guide-muted); font-size: .82rem; line-height: 1.45; }

.guide-section { padding: 100px 0; }
.guide-section--lined { border-block: 1px solid var(--guide-line); background: color-mix(in srgb, var(--guide-card) 75%, transparent); }
.guide-section__head { display: grid; grid-template-columns: minmax(220px, .7fr) minmax(0, 1.3fr); gap: 48px; align-items: end; margin-bottom: 50px; }
.guide-section h2 { margin: 10px 0 0; color: var(--guide-ink); font: 800 clamp(2.35rem, 5.3vw, 4.8rem)/.95 'Barlow Condensed', sans-serif; letter-spacing: -.025em; text-transform: uppercase; }
.guide-copy { color: var(--guide-muted); font-size: 1rem; line-height: 1.8; }
.guide-copy p + p { margin-top: 1.15rem; }
.guide-copy a { color: var(--guide-gold); font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 3px; }

.guide-series { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.guide-series__card { display: grid; grid-template-columns: 140px minmax(0, 1fr); min-height: 160px; overflow: hidden; border: 1px solid var(--guide-line); background: var(--guide-card); text-decoration: none; transition: transform .2s ease, border-color .2s ease; }
.guide-series__card:hover { transform: translateY(-3px); border-color: var(--guide-gold); }
.guide-series__card img { width: 100%; height: 100%; object-fit: cover; }
.guide-series__body { padding: 22px; }
.guide-series__body small { color: var(--guide-gold); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.guide-series__body h3 { margin: 5px 0 8px; color: var(--guide-ink); font: 800 1.55rem/1.1 'Barlow Condensed', sans-serif; }
.guide-series__body p { margin: 0; color: var(--guide-muted); font-size: .88rem; line-height: 1.55; }

.guide-terms { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-left: 1px solid var(--guide-line); border-top: 1px solid var(--guide-line); }
.guide-term { padding: 28px; border-right: 1px solid var(--guide-line); border-bottom: 1px solid var(--guide-line); background: var(--guide-card); }
.guide-term dt { color: var(--guide-gold); font: 800 1.45rem 'Barlow Condensed', sans-serif; text-transform: uppercase; }
.guide-term dd { margin: 9px 0 0; color: var(--guide-muted); line-height: 1.65; }

.guide-flow { counter-reset: guide-step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--guide-line); border: 1px solid var(--guide-line); }
.guide-flow__step { counter-increment: guide-step; padding: 30px 25px; background: var(--guide-card); }
.guide-flow__step::before { content: "0" counter(guide-step); display: block; margin-bottom: 30px; color: var(--guide-gold); font: 800 1rem 'Barlow Condensed', sans-serif; }
.guide-flow__step h3 { color: var(--guide-ink); font: 800 1.45rem 'Barlow Condensed', sans-serif; text-transform: uppercase; }
.guide-flow__step p { margin-top: 10px; color: var(--guide-muted); font-size: .9rem; line-height: 1.6; }

.guide-note { display: grid; grid-template-columns: auto 1fr; gap: 20px; padding: 26px; border-left: 4px solid var(--guide-gold); background: var(--guide-card); }
.guide-note i { color: var(--guide-gold); font-size: 1.6rem; }
.guide-note strong { color: var(--guide-ink); }
.guide-note p { margin: 6px 0 0; color: var(--guide-muted); line-height: 1.65; }
.guide-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.guide-link { padding: 24px; border: 1px solid var(--guide-line); background: var(--guide-card); color: var(--guide-ink); text-decoration: none; }
.guide-link span { color: var(--guide-gold); font-size: .76rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.guide-link strong { display: block; margin-top: 10px; font-size: 1.05rem; }
.guide-author { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px; padding: 26px 0; border-top: 1px solid var(--guide-line); color: var(--guide-muted); font-size: .86rem; }

@media (max-width: 900px) {
    .guide-proof__grid, .guide-flow { grid-template-columns: repeat(2, 1fr); }
    .guide-proof__item:nth-child(2) { border-right: 0; }
    .guide-proof__item:nth-child(-n+2) { border-bottom: 1px solid var(--guide-line); }
    .guide-section__head { grid-template-columns: 1fr; gap: 22px; }
    .guide-terms, .guide-links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .guide-shell { width: min(100% - 28px, 1180px); }
    .guide-hero { min-height: 610px; padding-top: 125px; }
    .guide-hero::after { background: linear-gradient(0deg, rgba(3,8,13,.95), rgba(3,8,13,.48)); }
    .guide-proof { margin-top: -20px; }
    .guide-proof__grid, .guide-series, .guide-terms, .guide-flow, .guide-links { grid-template-columns: 1fr; }
    .guide-proof__item { min-height: 105px; border-right: 0; border-bottom: 1px solid var(--guide-line); }
    .guide-proof__item:last-child { border-bottom: 0; }
    .guide-series__card { grid-template-columns: 110px minmax(0, 1fr); }
    .guide-section { padding: 72px 0; }
    .guide-term { padding: 23px; }
}