:root {
    --ink: #102033;
    --muted: #64748b;
    --line: rgba(37, 99, 235, 0.14);
    --blue: #2563eb;
    --cyan: #06b6d4;
    --green: #10b981;
    --navy: #0f2742;
    --gradient: linear-gradient(135deg, #2563eb, #06b6d4 52%, #10b981);
    --shadow: 0 28px 80px rgba(15, 39, 66, 0.14);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--ink);
    background: #eef8ff;
    font-family: "Kanit", "Segoe UI", sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

.interest-page {
    min-height: 100vh;
    background:
        radial-gradient(circle at 12% 8%, rgba(6, 182, 212, 0.18), transparent 24rem),
        radial-gradient(circle at 85% 12%, rgba(16, 185, 129, 0.14), transparent 26rem),
        linear-gradient(180deg, #f8fcff, #eef8ff);
}

.interest-hero {
    min-height: 100vh;
    padding: 18px;
}

.interest-nav {
    width: min(1160px, 100%);
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin: 0 auto 34px;
    padding: 10px 14px;
    border: 1px solid rgba(255, 255, 255, 0.74);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 18px 55px rgba(15, 39, 66, 0.1);
    backdrop-filter: blur(18px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--navy);
    font-weight: 800;
}

.brand img {
    width: 46px;
    height: 46px;
    border-radius: 50%;
}

.brand strong {
    color: var(--blue);
}

.ghost-link {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 9px 16px;
    border: 1px solid rgba(15, 39, 66, 0.12);
    border-radius: 999px;
    color: var(--navy);
    font-weight: 800;
    background: #fff;
}

.interest-shell {
    width: min(1160px, 100%);
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
    align-items: center;
    gap: 34px;
    margin: 0 auto;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--blue);
    font-size: 0.88rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.eyebrow::before {
    width: 34px;
    height: 2px;
    border-radius: 99px;
    background: var(--gradient);
    content: "";
}

.interest-copy h1 {
    margin: 18px 0;
    color: var(--navy);
    font-size: clamp(2.6rem, 5.4vw, 5.2rem);
    font-weight: 800;
    line-height: 1;
}

.interest-copy p {
    max-width: 680px;
    margin: 0;
    color: rgba(15, 39, 66, 0.74);
    font-size: 1.16rem;
    line-height: 1.75;
}

.product-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 28px;
}

.product-pills a {
    padding: 10px 14px;
    border: 1px solid rgba(37, 99, 235, 0.13);
    border-radius: 999px;
    color: var(--navy);
    background: #fff;
    font-weight: 800;
}

.product-pills a.active,
.product-pills a:hover {
    color: #fff;
    border-color: transparent;
    background: var(--gradient);
}

.interest-form {
    padding: 28px;
    border: 1px solid rgba(37, 99, 235, 0.14);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.93);
    box-shadow: var(--shadow);
}

.form-head {
    display: grid;
    gap: 2px;
    margin-bottom: 20px;
}

.form-head span {
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 700;
}

.form-head strong {
    color: var(--navy);
    font-size: 1.65rem;
    line-height: 1.2;
}

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

label {
    display: grid;
    gap: 7px;
    color: var(--navy);
    font-weight: 800;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid rgba(15, 39, 66, 0.14);
    border-radius: 12px;
    padding: 12px 13px;
    color: var(--ink);
    background: #f8fbff;
    font: inherit;
}

textarea {
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: rgba(37, 99, 235, 0.55);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.09);
    outline: none;
}

label small,
.validation-message {
    color: #b42318;
    font-size: 0.84rem;
    font-weight: 700;
}

.full {
    margin-top: 14px;
}

.success-message {
    margin-bottom: 16px;
    padding: 13px 15px;
    border-radius: 12px;
    color: #047857;
    background: rgba(16, 185, 129, 0.12);
    font-weight: 800;
}

button {
    width: 100%;
    min-height: 50px;
    margin-top: 18px;
    border: 0;
    border-radius: 999px;
    color: #fff;
    background: var(--gradient);
    box-shadow: 0 18px 38px rgba(37, 99, 235, 0.24);
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}

.form-note {
    margin: 12px 0 0;
    color: var(--muted);
    text-align: center;
    font-size: 0.92rem;
}

@media (max-width: 980px) {
    .interest-shell {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .interest-hero {
        padding: 10px;
    }

    .interest-nav {
        border-radius: 22px;
    }

    .brand span {
        display: none;
    }

    .interest-copy h1 {
        font-size: 2.55rem;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .interest-form {
        padding: 20px;
        border-radius: 14px;
    }
}