:root {
    color-scheme: light;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
    color: #12334a;
    background: #edf7fa;
}

* { box-sizing: border-box; }

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at 8% 18%, rgba(75, 191, 218, .34), transparent 28rem),
        linear-gradient(135deg, #e7f7fb 0%, #f8fbfc 54%, #deeff4 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: .24;
    background-image: linear-gradient(rgba(17, 108, 142, .16) 1px, transparent 1px), linear-gradient(90deg, rgba(17, 108, 142, .16) 1px, transparent 1px);
    background-size: 34px 34px;
    mask-image: linear-gradient(to right, black, transparent 60%);
}

.start-shell {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(390px, .72fr);
    align-items: center;
    gap: clamp(48px, 8vw, 120px);
    width: min(1160px, calc(100% - 48px));
    min-height: 100vh;
    margin: auto;
    padding: 56px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 74px;
    font-size: 17px;
    font-weight: 800;
    letter-spacing: -.01em;
}

.brand span {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    color: white;
    background: #087ca6;
    box-shadow: 0 8px 22px rgba(8, 124, 166, .24);
    font-size: 12px;
}

.eyebrow, .kicker {
    color: #087ca6;
    font-size: 12px;
    font-weight: 850;
    letter-spacing: .16em;
}

h1 {
    max-width: 670px;
    margin: 14px 0 22px;
    font-size: clamp(42px, 5.3vw, 70px);
    line-height: 1.01;
    letter-spacing: -.055em;
}

.lead {
    max-width: 610px;
    margin: 0 0 30px;
    color: #496779;
    font-size: 20px;
    line-height: 1.55;
}

.intro ul { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.intro li { color: #274d63; font-size: 15px; }
.intro li::before { content: "✓"; margin-right: 10px; color: #0b9b72; font-weight: 900; }

.access-card {
    padding: 34px;
    border: 1px solid rgba(41, 114, 145, .18);
    border-radius: 18px;
    background: rgba(255, 255, 255, .93);
    box-shadow: 0 28px 70px rgba(30, 78, 99, .18);
    backdrop-filter: blur(12px);
}

.mode-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    margin-bottom: 29px;
    padding: 4px;
    border-radius: 10px;
    background: #eaf3f6;
}

.mode-tabs button {
    padding: 10px;
    border: 0;
    border-radius: 7px;
    color: #527080;
    background: transparent;
    font: inherit;
    font-weight: 750;
    cursor: pointer;
}

.mode-tabs button.active { color: #075d7b; background: white; box-shadow: 0 2px 9px rgba(25, 77, 99, .12); }
.kicker { margin: 0 0 7px; }
h2 { margin: 0; color: #12334a; font-size: 30px; letter-spacing: -.035em; }
.card-copy { margin: 9px 0 25px; color: #66808e; line-height: 1.45; }

form { display: grid; gap: 14px; }
label { display: grid; gap: 6px; color: #284e62; font-size: 12px; font-weight: 750; }
input {
    width: 100%;
    height: 45px;
    padding: 0 13px;
    border: 1px solid #c7dae2;
    border-radius: 8px;
    outline: none;
    color: #153c51;
    background: #fbfdfe;
    font: inherit;
}
input:focus { border-color: #148cb2; box-shadow: 0 0 0 3px rgba(20, 140, 178, .13); }
.primary {
    height: 48px;
    margin-top: 5px;
    border: 0;
    border-radius: 8px;
    color: white;
    background: linear-gradient(135deg, #0785af, #075f85);
    box-shadow: 0 11px 24px rgba(8, 110, 148, .22);
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}
.primary:hover { filter: brightness(1.07); }
.terms { margin: 17px 0 10px; color: #80939d; font-size: 11px; line-height: 1.45; text-align: center; }
.preview-link { display: block; color: #167a9b; font-size: 12px; font-weight: 700; text-align: center; }

@media (max-width: 850px) {
    .start-shell { grid-template-columns: 1fr; width: min(620px, calc(100% - 32px)); gap: 42px; padding: 30px 0 48px; }
    .brand { margin-bottom: 48px; }
    .access-card { padding: 28px; }
}

@media (max-width: 460px) {
    .start-shell { width: min(100% - 20px, 620px); }
    .brand { margin-bottom: 38px; }
    h1 { font-size: 42px; }
    .lead { font-size: 17px; }
    .access-card { padding: 22px 18px; border-radius: 14px; }
}