* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(255, 125, 46, 0.18), transparent 35%),
        #11131a;
    color: #f5f5f5;
}

a {
    color: #ffbd66;
}

a:hover {
    color: #ffd08c;
}

.page {
    max-width: 1180px;
    margin: 0 auto;
    padding: 32px 18px 60px;
}

.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 14px 0 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    color: #f5f5f5;
    font-size: 18px;
    font-weight: 900;
    letter-spacing: -0.02em;
    text-decoration: none;
}

.brand:hover {
    color: #ffffff;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 16px;
    flex-wrap: wrap;
}

.nav-links a {
    color: #c9ccd6;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.nav-links a:hover {
    color: #ffbd66;
    text-decoration: none;
}

.breadcrumb {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
    color: #aeb3c1;
    font-size: 14px;
    margin: 4px 0 28px;
}

.breadcrumb a {
    color: #ffbd66;
    text-decoration: none;
}

.breadcrumb a:hover {
    color: #ffd08c;
    text-decoration: none;
}

.hero {
    margin-bottom: 28px;
}

.eyebrow {
    color: #ffbd66;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 0.12em;
    margin: 0 0 8px;
}

h1 {
    font-size: clamp(32px, 5vw, 56px);
    line-height: 1;
    margin: 0 0 14px;
}

h2 {
    margin-top: 0;
}

.intro {
    max-width: 740px;
    color: #c9ccd6;
    font-size: 18px;
    line-height: 1.5;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.panel {
    background: rgba(28, 31, 42, 0.92);
    border: 1px solid #303546;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 16px 35px rgba(0, 0, 0, 0.25);
}

.panel.wide {
    margin-top: 18px;
}

.form-row {
    margin-bottom: 16px;
}

label {
    display: block;
    font-weight: 700;
    margin-bottom: 7px;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid #3d4358;
    background: #11131a;
    color: #fff;
    border-radius: 10px;
    padding: 12px 13px;
    font-size: 16px;
}

textarea {
    resize: vertical;
}

small,
.muted {
    color: #aeb3c1;
}

.input-with-unit {
    display: flex;
    align-items: center;
    gap: 8px;
}

.input-with-unit input {
    flex: 1;
}

.input-with-unit span {
    min-width: 34px;
    color: #c9ccd6;
}

button {
    border: 0;
    background: #ff8a2a;
    color: #11131a;
    font-weight: 800;
    border-radius: 10px;
    padding: 13px 18px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background: #ff9f4f;
}

.result-box {
    margin-top: 22px;
    border: 1px solid #41485e;
    border-radius: 14px;
    padding: 18px;
    background: #141722;
}

.hidden {
    display: none;
}

.result-label {
    color: #aeb3c1;
    margin: 0 0 5px;
}

.result-angle {
    font-size: 54px;
    line-height: 1;
    margin: 0 0 18px;
    font-weight: 900;
}

.brackets {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 14px;
}

.brackets div {
    background: #1f2330;
    border-radius: 12px;
    padding: 14px;
}

.brackets span {
    display: block;
    color: #aeb3c1;
    margin-bottom: 6px;
}

.brackets strong {
    font-size: 24px;
}

.confidence {
    color: #ffbd66;
    font-weight: 700;
}

.tip {
    color: #c9ccd6;
    margin-bottom: 0;
}

.submit-message {
    margin-top: 16px;
    padding: 13px;
    border-radius: 10px;
    background: #1f3525;
    border: 1px solid #3a7c49;
}

.submit-message.error {
    background: #3a1f1f;
    border-color: #8c3c3c;
}

.notice {
    padding: 14px 16px;
    border-radius: 10px;
    background: #1f2a3a;
    border: 1px solid #3c6a8c;
    color: #d2ecff;
    font-size: 14px;
    line-height: 1.5;
}

ul {
    color: #c9ccd6;
    line-height: 1.7;
}

.result-angle,
.brackets strong {
    display: inline-flex;
    align-items: baseline;
    gap: 2px;
    white-space: nowrap;
}

.result-angle span,
.brackets strong span {
    display: inline;
}

.embed-label {
    display: block;
    margin-bottom: 10px;
    color: #aeb3c1;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.embed-slot {
    min-height: 100px;
}

.embed-slot--rectangle {
    display: flex;
    justify-content: center;
    min-height: 250px;
}

.site-footer {
    margin-top: 34px;
    padding-top: 22px;
    border-top: 1px solid #303546;
    color: #aeb3c1;
    font-size: 14px;
}

.site-footer a {
    color: #ffbd66;
    text-decoration: none;
}

.site-footer a:hover {
    color: #ffd08c;
    text-decoration: none;
}

@media (max-width: 800px) {
    .top-nav {
        align-items: flex-start;
        flex-direction: column;
    }

    .nav-links {
        justify-content: flex-start;
        gap: 12px;
    }

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