:root {
    --bg: #171717;
    --bg-2: #1c1c1c;
    --line: #2e2e2e;
    --ink: #fafafa;
    --ink-soft: #b5b5b5;
    --ink-faint: #9a9a9a;
    --blue: #1a6ef0;
    --blue-hover: #3b82f6;
    --blue-text: #6cb0ff;
    --hero: #0f1a33;
    --sans: "Instrument Sans", ui-sans-serif, system-ui, sans-serif;
    --radius: 12px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--sans); line-height: 1.6; color: var(--ink); background: var(--bg); }
h1, h2, h3 { margin: 0; line-height: 1.15; font-weight: 700; letter-spacing: -.02em; }
p { margin: 0; }
a { color: var(--blue-text); text-underline-offset: .18em; }
a:hover { color: #9ccaff; }
:focus-visible { outline: 2px solid var(--blue-text); outline-offset: 3px; border-radius: 4px; }
main:focus, section:focus { outline: none; }

.wrap { width: 100%; max-width: 68rem; margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }
.skip { position: absolute; left: 1rem; top: -10rem; background: #fff; color: #000; padding: .5rem 1rem; z-index: 50; border-radius: 8px; }
.skip:focus { top: 1rem; }

.btn {
    display: inline-flex; align-items: center; justify-content: center; min-height: 48px;
    padding: .75rem 1.5rem; border-radius: 8px; border: 1px solid var(--blue);
    background: var(--blue); color: #fff; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
}
.btn:hover { background: var(--blue-hover); border-color: var(--blue-hover); color: #fff; }
.btn--small { min-height: 40px; padding: .45rem 1rem; font-size: .92rem; }
.btn--ghost { background: transparent; border-color: #4a4a4a; color: var(--ink); }
.btn--ghost:hover { background: rgba(255, 255, 255, .06); border-color: #6a6a6a; color: var(--ink); }
.btn--light { background: #fff; border-color: #fff; color: #0b4fc2; }
.btn--light:hover { background: #eaf2ff; border-color: #eaf2ff; color: #0b4fc2; }

.logo { display: inline-flex; align-items: center; gap: .55rem; color: var(--ink); font-weight: 700; text-decoration: none; font-size: 1.1rem; }
.logo:hover { color: var(--ink); }
.logo__mark { display: grid; place-items: center; width: 1.9rem; height: 1.9rem; border-radius: 8px; background: linear-gradient(135deg, #2d8cf0, #0060ad); color: #fff; font-size: .95rem; }

.top { background: var(--bg); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.top__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4rem; flex-wrap: wrap; padding-block: .5rem; }
.top__nav { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: .25rem 1.25rem; flex-wrap: wrap; }
.top__nav a:not(.btn) { color: var(--ink-soft); text-decoration: none; font-size: .95rem; }
.top__nav a:not(.btn):hover { color: var(--ink); text-decoration: underline; }

.hero {
    background-color: var(--hero);
    background-image:
        radial-gradient(ellipse 60% 70% at 50% 50%, rgba(8, 14, 30, .72) 0%, rgba(8, 14, 30, .72) 75%, rgba(8, 14, 30, .30) 100%),
        linear-gradient(180deg, rgba(8, 14, 30, .25) 0%, rgba(8, 14, 30, 0) 30%, rgba(8, 14, 30, .55) 100%),
        url("../img/hero.jpg");
    background-size: cover;
    background-position: center 40%;
    padding: clamp(4rem, 10vw, 7rem) 0 clamp(3.5rem, 8vw, 6rem);
    text-align: center;
}
.hero h1 { text-shadow: 0 2px 24px rgba(0, 0, 0, .55); font-size: clamp(2.3rem, 1.3rem + 4.4vw, 4.4rem); max-width: 16ch; margin: 0 auto; }
.hero h1 span { display: block; color: #8fc4ff; }
.hero__lede { color: #dbe2ee; text-shadow: 0 1px 12px rgba(0, 0, 0, .6); font-size: clamp(1.05rem, 1rem + .3vw, 1.2rem); max-width: 40rem; margin: 1.5rem auto 0; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; justify-content: center; margin-top: 2rem; }

.facts { padding: 3rem 0 2rem; border-bottom: 1px solid var(--line); }
.facts__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; text-align: center; }
.facts__num { font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.2rem); font-weight: 700; color: var(--blue-text); letter-spacing: -.02em; margin-bottom: .3rem; }
.facts__grid p:not(.facts__num) { color: var(--ink-soft); font-size: .95rem; }
.facts__source { color: var(--ink-faint); font-size: .85rem; text-align: center; margin-top: 2rem; }

.section-title { font-size: clamp(1.8rem, 1.4rem + 1.4vw, 2.4rem); text-align: center; }
.section-lede { color: var(--ink-soft); text-align: center; margin: .75rem auto 0; max-width: 36rem; }

.hear { padding: 5rem 0; border-bottom: 1px solid var(--line); }
.hear__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; margin-top: 2.5rem; }
.transcript { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2); padding: 1.5rem; }
.transcript figcaption { display: flex; align-items: center; gap: .6rem; font-weight: 600; margin-bottom: 1rem; }
.transcript ol { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.transcript li { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: .92rem; line-height: 1.5; padding: .6rem .8rem; border-radius: 8px; background: #232323; color: #e5e5e5; }
.transcript--before li { color: #b0b0b0; }
.transcript--after { border-color: #1d4f9c; background: #121a2c; }
.transcript--after li { background: #18233d; color: #eef4ff; }
.tag { font-size: .78rem; font-weight: 700; padding: .15rem .55rem; border-radius: 999px; text-transform: uppercase; letter-spacing: .05em; }
.tag--bad { background: #3b1d1d; color: #ffb4b4; }
.tag--good { background: #12324f; color: #9ccaff; }

.how { padding: 5rem 0; border-bottom: 1px solid var(--line); }
.steps { list-style: none; margin: 3rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; text-align: center; }
.steps__box { display: inline-block; padding: .55rem 1rem; border-radius: 10px; font-weight: 700; margin-bottom: 1.1rem; }
.steps__box--drop { background: #3a2a08; color: #fcd34d; }
.steps__box--rem { background: #12285a; color: #93c5fd; }
.steps__box--fin { background: #0f3a22; color: #86efac; }
.steps h3 { font-size: 1.2rem; margin-bottom: .5rem; }
.steps p { color: var(--ink-soft); }

.features { padding: 5rem 0; }
.features__grid { list-style: none; margin: 3rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.features__grid li { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.6rem; background: var(--bg-2); }
.feat-icon { display: grid; place-items: center; width: 2.6rem; height: 2.6rem; border-radius: 8px; background: #12285a; color: var(--blue-text); margin-bottom: 1.1rem; }
.feat-icon .icon { width: 1.3rem; height: 1.3rem; }
.features__grid h3 { font-size: 1.1rem; margin-bottom: .4rem; }
.features__grid p { color: var(--ink-soft); font-size: .96rem; }

.kinds { padding: 4rem 0 5rem; }
.kinds__list { list-style: none; margin: 2.5rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.kinds__list li { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem; text-align: center; font-weight: 600; background: var(--bg-2); }

.request { padding: 2rem 0 5rem; }
.request__panel {
    background: linear-gradient(135deg, #1a63e0, #0b4fc2);
    border-radius: 20px; padding: clamp(1.5rem, 4vw, 3rem);
    display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 2.5rem; align-items: start;
}
.request__intro h2 { font-size: clamp(1.7rem, 1.3rem + 1.4vw, 2.3rem); }
.request__intro p { color: #e3edff; margin-top: .75rem; }
.request__form { display: grid; gap: 1rem; }
.row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.fld label { display: block; font-weight: 600; margin-bottom: .3rem; }
.opt { font-weight: 400; color: #d6e4ff; }
.fld input, .fld textarea {
    display: block; width: 100%; font: inherit; color: #111; background: #fff;
    border: 1px solid #c7d7f5; border-radius: 8px; padding: .65rem .8rem; min-height: 46px;
}
.fld input:focus-visible, .fld textarea:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
.fld input[aria-invalid="true"] { border: 3px solid #ffd166; }
.err { color: #fff; background: rgba(0, 0, 0, .25); border-radius: 6px; padding: .3rem .6rem; margin-top: .35rem; font-weight: 600; font-size: .92rem; }
.errors { background: #fff; color: #9f1239; border-radius: 10px; padding: 1rem 1.25rem; }
.errors p { font-weight: 700; }
.errors ul { margin: .4rem 0 0; padding-left: 1.2rem; }
.errors a { color: #9f1239; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.request__form .btn { justify-self: start; }
.request__done { background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .35); border-radius: var(--radius); padding: 1.5rem; }
.request__done h3 { font-size: 1.25rem; margin-bottom: .4rem; }

.bottom { border-top: 1px solid var(--line); padding: 2rem 0; }
.bottom__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.bottom p { color: var(--ink-faint); font-size: .9rem; }

@media (max-width: 52rem) {
    .hero { background-image: linear-gradient(rgba(8, 14, 30, .72), rgba(8, 14, 30, .72)), url("../img/hero.jpg"); }
    .facts__grid, .steps, .features__grid, .hear__grid, .request__panel, .row { grid-template-columns: minmax(0, 1fr); }
    .kinds__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 30rem) {
    .kinds__list { grid-template-columns: minmax(0, 1fr); }
    .top__nav { gap: .25rem .9rem; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}

@media (forced-colors: active) {
    .hero { background-image: none; }
}