:root {
    --bg: #080b12;
    --surface: rgba(18, 23, 34, .82);
    --surface-strong: #151b28;
    --line: rgba(255, 255, 255, .09);
    --muted: #919aaa;
    --text: #f5f7fb;
    --accent: #54e0a6;
    --accent-strong: #26c988;
    --blue: #6385ff;
    --danger: #ff6b7b;
    --shadow: 0 30px 90px rgba(0, 0, 0, .38);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background:
        radial-gradient(circle at 50% -20%, rgba(81, 115, 255, .15), transparent 42%),
        var(--bg);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: .16;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.15'/%3E%3C/svg%3E");
}

.ambient {
    position: fixed;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
    opacity: .12;
}

.ambient-one { background: var(--accent); top: 24%; left: -250px; }
.ambient-two { background: var(--blue); right: -260px; top: 12%; }

.site-header {
    width: min(1120px, calc(100% - 40px));
    height: 88px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    color: var(--text);
    text-decoration: none;
    font-size: 19px;
    font-weight: 760;
    letter-spacing: -.6px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    color: #07120e;
    background: var(--accent);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(84, 224, 166, .18);
}

.brand-mark svg { width: 23px; fill: currentColor; }
.brand-accent { color: var(--accent); }

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #a8b0be;
    font-size: 12px;
    letter-spacing: .2px;
}

.status-pill i, .success-label i {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(84, 224, 166, .1);
}

.page-shell {
    width: min(880px, calc(100% - 40px));
    margin: 0 auto;
}

.hero {
    padding: 94px 0 54px;
    text-align: center;
}

.eyebrow {
    display: flex;
    justify-content: center;
    gap: 10px;
    color: var(--accent);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.8px;
    text-transform: uppercase;
}

.eyebrow b { color: #445064; }

h1 {
    margin: 22px 0 20px;
    font-size: clamp(46px, 8vw, 82px);
    line-height: .98;
    letter-spacing: clamp(-4px, -.06em, -2px);
    font-weight: 750;
}

h1 em {
    color: transparent;
    background: linear-gradient(100deg, #ffffff 12%, #8794aa 92%);
    background-clip: text;
    -webkit-background-clip: text;
    font-style: normal;
    font-weight: 390;
}

.hero-copy {
    width: min(620px, 100%);
    margin: 0 auto;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.75;
}

.download-form {
    position: relative;
    width: min(760px, 100%);
    margin: 42px auto 0;
    padding: 10px;
    background: rgba(17, 22, 32, .8);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.download-form > label {
    position: absolute;
    width: 1px;
    height: 1px;
    clip: rect(0 0 0 0);
    overflow: hidden;
}

.input-row {
    height: 64px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 13px 0 17px;
    border-radius: 13px;
    background: rgba(4, 7, 13, .62);
    border: 1px solid rgba(255, 255, 255, .08);
    transition: border-color .2s, box-shadow .2s;
}

.input-row:focus-within {
    border-color: rgba(84, 224, 166, .55);
    box-shadow: 0 0 0 4px rgba(84, 224, 166, .07);
}

.link-icon { display: grid; place-items: center; color: #6e7889; }
.link-icon svg { width: 22px; fill: currentColor; }

.input-row input {
    min-width: 0;
    flex: 1;
    height: 100%;
    padding: 0;
    border: 0;
    outline: none;
    color: var(--text);
    background: transparent;
    font: inherit;
    font-size: 14px;
}

.input-row input::placeholder { color: #5e6777; }

.paste-button {
    padding: 8px 11px;
    border: 0;
    border-radius: 8px;
    color: #b7bfcc;
    background: rgba(255, 255, 255, .07);
    font: inherit;
    font-size: 12px;
    font-weight: 650;
    cursor: pointer;
    transition: color .2s, background .2s;
}

.paste-button:hover { color: var(--text); background: rgba(255, 255, 255, .12); }

.field-error {
    display: none;
    margin: 9px 4px 0;
    color: var(--danger);
    text-align: left;
    font-size: 12px;
}

.field-error.visible { display: block; }

.submit-button {
    width: 100%;
    height: 58px;
    margin-top: 10px;
    border: 0;
    border-radius: 13px;
    color: #07130e;
    background: linear-gradient(135deg, #61e7b0, #31ce8e);
    box-shadow: 0 14px 40px rgba(48, 207, 142, .16);
    font: inherit;
    font-size: 14px;
    font-weight: 780;
    cursor: pointer;
    transition: transform .2s, box-shadow .2s, filter .2s;
}

.submit-button:hover { transform: translateY(-1px); filter: brightness(1.04); box-shadow: 0 18px 44px rgba(48, 207, 142, .24); }
.submit-button:active { transform: translateY(0); }
.submit-button:disabled { cursor: wait; opacity: .8; }
.button-label, .button-loading { align-items: center; justify-content: center; gap: 10px; }
.button-label { display: flex; }
.button-label svg { width: 19px; fill: currentColor; }
.button-loading { display: none; }
.submit-button.loading .button-label { display: none; }
.submit-button.loading .button-loading { display: flex; }

.button-loading i {
    width: 17px;
    height: 17px;
    border: 2px solid rgba(7, 19, 14, .3);
    border-top-color: #07130e;
    border-radius: 50%;
    animation: spin .75s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.message {
    width: min(760px, 100%);
    margin: 18px auto 0;
    padding: 16px 18px;
    display: flex;
    gap: 13px;
    text-align: left;
    border-radius: 14px;
}

.error-message { background: rgba(255, 107, 123, .08); border: 1px solid rgba(255, 107, 123, .2); }
.message-icon { flex: none; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; color: #120509; background: var(--danger); font-weight: 900; }
.message strong { font-size: 13px; }
.message p { margin: 5px 0 0; color: #bd9199; font-size: 12px; line-height: 1.6; }

.results {
    margin: 12px 0 66px;
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: var(--surface);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
    scroll-margin-top: 24px;
}

.result-heading { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.success-label { display: inline-flex; align-items: center; gap: 9px; color: var(--accent); font-size: 11px; font-weight: 750; letter-spacing: 1.3px; text-transform: uppercase; }
.result-heading h2 { margin: 8px 0 0; font-size: 25px; letter-spacing: -.8px; }
.expiry { color: #707989; font-size: 11px; }

.quality-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }

.quality-card {
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 14px;
    padding: 22px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 17px;
    background: rgba(4, 8, 14, .45);
}

.quality-card.featured { border-color: rgba(84, 224, 166, .26); background: linear-gradient(145deg, rgba(43, 87, 70, .2), rgba(4, 8, 14, .5)); }
.recommended { position: absolute; top: 0; right: 0; padding: 5px 10px; color: #07130e; background: var(--accent); border-radius: 0 16px 0 10px; font-size: 9px; font-weight: 850; letter-spacing: .6px; text-transform: uppercase; }

.quality-icon { display: grid; place-items: center; width: 45px; height: 45px; color: var(--accent); background: rgba(84, 224, 166, .1); border-radius: 12px; }
.quality-icon.muted { color: #8f99aa; background: rgba(255, 255, 255, .06); }
.quality-icon svg { width: 26px; fill: currentColor; }
.quality-copy { min-width: 0; }
.quality-copy h3 { margin: 0 0 5px; font-size: 15px; }
.quality-copy p { margin: 0; color: #727c8c; font-size: 10px; }
.quality-badge { padding: 5px 7px; color: var(--accent); border: 1px solid rgba(84, 224, 166, .25); border-radius: 7px; font-size: 9px; font-weight: 800; }
.quality-badge.subtle { color: #9ca6b5; border-color: var(--line); }

.download-button {
    grid-column: 1 / -1;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    margin-top: 4px;
    border-radius: 10px;
    color: #07130e;
    background: var(--accent);
    text-decoration: none;
    font-size: 12px;
    font-weight: 800;
    transition: transform .18s, filter .18s;
}

.download-button:hover { transform: translateY(-1px); filter: brightness(1.05); }
.download-button.secondary { color: #d8dde6; background: rgba(255, 255, 255, .08); border: 1px solid var(--line); }
.download-button svg { width: 18px; fill: currentColor; }

.source-line {
    margin: 21px 2px 0;
    padding-top: 18px;
    border-top: 1px solid var(--line);
    color: #737d8d;
    font-size: 10px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.source-line span { margin-right: 10px; color: #a7afbc; font-weight: 700; text-transform: uppercase; letter-spacing: .8px; }

.steps {
    display: grid;
    grid-template-columns: 1fr 50px 1fr 50px 1fr;
    align-items: center;
    padding: 34px 0 70px;
    border-top: 1px solid var(--line);
}

.steps > div { display: flex; align-items: flex-start; gap: 12px; }
.steps > div > span { flex: none; display: grid; place-items: center; width: 31px; height: 31px; color: var(--accent); border: 1px solid rgba(84, 224, 166, .2); border-radius: 9px; font-size: 9px; font-weight: 800; }
.steps p { margin: 0; color: #737c8b; font-size: 10px; line-height: 1.5; }
.steps strong { display: block; margin-bottom: 3px; color: #dce1e9; font-size: 11px; }
.steps > i { height: 1px; background: var(--line); }

footer {
    width: min(1120px, calc(100% - 40px));
    min-height: 86px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    color: #586171;
    border-top: 1px solid var(--line);
    font-size: 10px;
}

footer p { margin: 0; }

@media (max-width: 700px) {
    .site-header { height: 72px; }
    .hero { padding: 66px 0 40px; }
    h1 { font-size: clamp(42px, 13vw, 62px); }
    .hero-copy { font-size: 14px; }
    .download-form { margin-top: 32px; }
    .quality-grid { grid-template-columns: 1fr; }
    .results { padding: 22px; }
    .result-heading { align-items: flex-start; }
    .expiry { display: none; }
    .steps { grid-template-columns: 1fr; gap: 18px; }
    .steps > i { display: none; }
}

@media (max-width: 480px) {
    .site-header, .page-shell, footer { width: min(100% - 28px, 880px); }
    .status-pill { display: none; }
    .hero { padding-top: 52px; }
    h1 { letter-spacing: -2.5px; }
    .download-form { padding: 8px; border-radius: 17px; }
    .input-row { height: 58px; padding-left: 12px; }
    .input-row input { font-size: 12px; }
    .paste-button { padding-inline: 8px; }
    .submit-button { height: 54px; }
    .quality-card { padding: 18px; }
    footer { flex-direction: column; align-items: flex-start; justify-content: center; padding: 22px 0; }
}

@media (prefers-reduced-motion: reduce) {
    * { scroll-behavior: auto !important; animation-duration: .01ms !important; }
}