:root {
    color-scheme: dark;
    --bg: #090b10;
    --panel: #131720;
    --panel-2: #171d29;
    --text: #f5efe8;
    --muted: #b7a99c;
    --line: #2b3445;
    --accent: #f0a84b;
    --accent-2: #ffd391;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    background: radial-gradient(circle at top left, #182133 0, #090b10 42rem);
    color: var(--text);
    font-family: Verdana, Arial, sans-serif;
    font-size: 14px;
}
a { color: var(--accent-2); }
.page {
    max-width: 1320px;
    margin: 0 auto;
    padding: 28px 24px 48px;
}
.hero {
    margin-bottom: 20px;
    padding: 24px 26px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(255,255,255,.055), rgba(255,255,255,.015));
    box-shadow: 0 18px 50px rgba(0,0,0,.25);
}
.hero h1 {
    margin: 0 0 8px;
    font-size: 28px;
    font-weight: 700;
}
.hero p {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}
.input-card {
    margin-bottom: 28px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(19, 23, 32, .92);
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(260px, 1fr));
    gap: 14px;
}
.form-section {
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--panel-2);
}
.form-section h2 {
    margin: 0 0 12px;
    font-size: 16px;
    color: var(--accent-2);
}
.field {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 7px 12px;
    margin: 9px 0;
    color: var(--text);
    line-height: 1.25;
}
.field-caption {
    display: block;
    flex: 1 1 auto;
    min-width: 0;
    color: var(--text);
}
.field-caption small {
    display: block;
    color: var(--muted);
    font-size: 12px;
    margin-top: 3px;
}
.field input,
.field select {
    flex: 0 0 150px;
    width: 150px;
    max-width: 100%;
    margin-left: auto;
}
.field--stack {
    align-items: flex-start;
}
.field--stack .field-caption {
    flex: 0 0 100%;
}
.field--stack input,
.field--stack select {
    flex: 1 1 100%;
    width: 100%;
    margin-left: 0;
}
input, select {
    min-height: 34px;
    padding: 7px 9px;
    border: 1px solid #364155;
    border-radius: 9px;
    background: #0d1119;
    color: var(--text);
    text-align: right;
    font-family: Verdana, Arial, sans-serif;
}
select { text-align: left; }
input:focus, select:focus {
    outline: 2px solid rgba(240, 168, 75, .28);
    border-color: var(--accent);
}
.form-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 16px;
}
button {
    min-width: 240px;
    min-height: 46px;
    border: 0;
    border-radius: 12px;
    background: linear-gradient(135deg, #f0a84b, #d9822b);
    color: #161008;
    font-weight: 700;
    cursor: pointer;
}
button:hover { filter: brightness(1.06); }
.results {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(10, 13, 20, .78);
}
.calc-pre, pre {
    color: #d9d4ce;
    font-family: Consolas, Monaco, 'Courier New', monospace;
    white-space: pre-wrap;
}
.img_graf { width: 1000px; max-width: 100%; height: auto; }
svg { max-width: 100%; }
@media (max-width: 1040px) {
    .form-grid { grid-template-columns: repeat(2, minmax(260px, 1fr)); }
}
@media (max-width: 720px) {
    .page { padding: 16px; }
    .form-grid { grid-template-columns: 1fr; }
    .field input,
    .field select {
        flex: 1 1 100%;
        width: 100%;
        margin-left: 0;
    }
}