.vector-page {
    background: #f4f7fb;
}

.vector-page .site-main {
    max-width: 1120px !important;
    padding-top: 1.25rem;
}

.vector-hero {
    padding-bottom: 1.35rem;
}

.vector-calculator {
    margin-top: 1.2rem;
}

.vector-workbench {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(380px, 1.05fr);
    overflow: hidden;
    background: #fff;
    border: 1px solid #dbe3ee;
    border-radius: 21px;
    box-shadow: 0 18px 48px rgba(20, 42, 76, 0.09);
}

.vector-form {
    min-width: 0;
    padding: 1.35rem;
}

.vector-panel-heading {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.8rem;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e2e8f0;
}

.vector-panel-heading__icon {
    width: 50px;
    height: 48px;
    display: grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(145deg, var(--blue), var(--blue-dark));
    border-radius: 13px;
    box-shadow: 0 8px 18px rgba(40, 120, 255, 0.2);
    font-size: 0.82rem;
    font-weight: 700;
}

.vector-panel-heading .section-kicker,
.vector-results__header .section-kicker,
.vector-example .section-kicker {
    margin-bottom: 0.25rem;
}

.vector-panel-heading h2,
.vector-results__header h2,
.vector-definition h2,
.vector-facts h2 {
    margin: 0;
    color: var(--ink);
    font-weight: 800;
    letter-spacing: -0.035em;
}

.vector-panel-heading h2 {
    font-size: 1.16rem;
}

.vector-panel-heading p:last-child {
    margin: 0.25rem 0 0;
    color: #6c798c;
    font-size: 0.8rem;
}

.vector-input-groups {
    display: grid;
    gap: 0.8rem;
    margin-top: 1rem;
}

.vector-input-group {
    margin: 0;
    padding: 0.85rem;
    background: #f8fafc;
    border: 1px solid #dce4ee;
    border-radius: 13px;
}

.vector-input-group--b {
    background: #f6f9ff;
    border-color: #d8e4f7;
}

.vector-input-group legend {
    width: 100%;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.75rem;
    margin: 0;
    padding: 0 0 0.55rem;
}

.vector-input-group legend strong {
    color: #263750;
    font-size: 0.92rem;
}

.vector-input-group legend span {
    color: #748196;
    font-size: 0.78rem;
    font-weight: 600;
}

.vector-coordinate-fields {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.55rem;
}

.vector-coordinate-fields label {
    min-width: 0;
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    align-items: center;
    overflow: hidden;
    background: #fff;
    border: 1px solid #d4dde9;
    border-radius: 9px;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.vector-coordinate-fields label:focus-within {
    border-color: #78a8f5;
    box-shadow: 0 0 0 3px rgba(40, 120, 255, 0.1);
}

.vector-coordinate-fields label:has(input[aria-invalid="true"]) {
    border-color: #d45e50;
    box-shadow: 0 0 0 3px rgba(212, 94, 80, 0.09);
}

.vector-coordinate-fields label > span {
    height: 42px;
    display: grid;
    place-items: center;
    color: #52647b;
    background: #edf2f7;
    border-right: 1px solid #d8e0ea;
    font-size: 0.78rem;
    font-weight: 700;
}

.vector-coordinate-fields input {
    width: 100%;
    min-width: 0;
    height: 42px;
    padding: 0 0.58rem;
    color: var(--ink);
    background: transparent;
    border: 0;
    outline: 0;
    font-size: 0.9rem;
    font-variant-numeric: tabular-nums;
    font-weight: 600;
}

.vector-coordinate-fields input::placeholder {
    color: #a0aaba;
    font-weight: 400;
}

.vector-error {
    margin: 0.75rem 0 0;
    padding: 0.65rem 0.75rem;
    color: #963b30;
    background: #fff1ee;
    border: 1px solid #f0cbc5;
    border-radius: 9px;
    font-size: 0.78rem;
    font-weight: 650;
}

.vector-form-actions {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 0.5rem;
    margin-top: 0.85rem;
}

.vector-button,
.vector-copy,
.vector-example button {
    min-height: 41px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.55rem 0.7rem;
    color: #34455c;
    background: #fff;
    border: 1px solid #ccd6e4;
    border-radius: 9px;
    font-size: 0.8rem;
    font-weight: 700;
}

.vector-button:hover,
.vector-button:focus-visible,
.vector-example button:hover,
.vector-example button:focus-visible {
    color: var(--blue-dark);
    background: #f2f7ff;
    border-color: #a9c6f6;
}

.vector-button--primary {
    color: #fff;
    background: var(--blue-dark);
    border-color: var(--blue-dark);
    box-shadow: 0 7px 16px rgba(21, 95, 219, 0.18);
}

.vector-button--primary:hover,
.vector-button--primary:focus-visible {
    color: #fff;
    background: #104fb4;
}

.vector-button--quiet {
    color: #68768a;
    background: transparent;
    border-color: transparent;
}

.vector-button svg,
.vector-copy svg {
    width: 17px;
    height: 17px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.7;
}

.vector-results {
    min-width: 0;
    padding: 1.35rem;
    color: #fff;
    background:
        radial-gradient(circle at 100% 0, rgba(69, 215, 179, 0.18), transparent 34%),
        linear-gradient(145deg, #0b172a, #112744);
    border-left: 1px solid #203856;
}

.vector-results__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.vector-results__header .section-kicker {
    color: #84b5ff;
}

.vector-results__header h2 {
    color: #fff;
    font-size: 1.08rem;
}

.vector-copy {
    min-height: 36px;
    padding: 0.45rem 0.62rem;
    color: #dce7f5;
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.16);
}

.vector-copy:hover,
.vector-copy:focus-visible,
.vector-copy.is-copied {
    color: #08271f;
    background: var(--mint);
    border-color: var(--mint);
}

.vector-copy:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.vector-result-main {
    display: flex;
    align-items: baseline;
    gap: 0.65rem;
    margin-top: 1.2rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: 13px;
}

.vector-result-main > span {
    color: #9fb0c6;
    font-size: 0.84rem;
    font-weight: 700;
}

.vector-result-main strong {
    min-width: 0;
    color: #fff;
    font-family: Consolas, "Courier New", monospace;
    font-size: clamp(1.2rem, 3vw, 1.7rem);
    font-weight: 700;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.vector-results__placeholder {
    margin: 1rem 0 0;
    color: #aebed1;
    font-size: 0.82rem;
    line-height: 1.6;
}

.vector-result-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
    margin-top: 0.75rem;
}

.vector-result-grid article {
    display: grid;
    gap: 0.25rem;
    padding: 0.72rem;
    background: rgba(255, 255, 255, 0.065);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.vector-result-grid span,
.vector-normal span {
    color: #aebdd0;
    font-size: 0.78rem;
    font-weight: 600;
}

.vector-result-grid strong {
    color: #fff;
    font-size: 0.94rem;
    font-variant-numeric: tabular-nums;
}

.vector-normal {
    display: grid;
    gap: 0.28rem;
    margin-top: 0.55rem;
    padding: 0.72rem;
    background: rgba(69, 215, 179, 0.09);
    border: 1px solid rgba(69, 215, 179, 0.22);
    border-radius: 10px;
}

.vector-normal strong {
    color: #c8fff1;
    font-family: Consolas, "Courier New", monospace;
    font-size: 0.86rem;
    overflow-wrap: anywhere;
}

.vector-check {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-top: 0.65rem;
    padding: 0.65rem 0.72rem;
    color: #bdeede;
    background: rgba(69, 215, 179, 0.08);
    border-radius: 9px;
}

.vector-check > span {
    flex: 0 0 auto;
    width: 20px;
    height: 20px;
    display: grid;
    place-items: center;
    color: #072b22;
    background: var(--mint);
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 800;
}

.vector-check p,
.vector-substitution {
    margin: 0;
    font-size: 0.78rem;
    line-height: 1.55;
}

.vector-substitution {
    margin-top: 0.65rem;
    color: #9fb0c5;
    overflow-wrap: anywhere;
}

.vector-results--empty .vector-result-main {
    opacity: 0.72;
}

.vector-definition {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
    gap: 1rem;
    margin-top: 3rem;
}

.vector-definition__main,
.vector-example {
    padding: 1.35rem;
    background: #fff;
    border: 1px solid #dfe5ee;
    border-radius: 17px;
}

.vector-definition h2 {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
}

.vector-definition__main > p:not(.section-kicker) {
    margin: 0.75rem 0 0;
    color: #647287;
    font-size: 0.82rem;
    line-height: 1.7;
}

.vector-formula {
    display: grid;
    gap: 0.48rem;
    margin-top: 1rem;
    padding: 0.9rem;
    color: #254366;
    background: #eef5ff;
    border: 1px solid #d3e2f8;
    border-radius: 11px;
}

.vector-formula span {
    color: #61738a;
    font-size: 0.78rem;
}

.vector-formula strong {
    color: #174f9e;
    font-size: 0.82rem;
    line-height: 1.65;
    overflow-wrap: anywhere;
}

.vector-example {
    background:
        radial-gradient(circle at 100% 0, rgba(40, 120, 255, 0.11), transparent 38%),
        #f8fbff;
}

.vector-example h2 {
    color: #263750;
    font-size: 1rem;
    line-height: 1.45;
}

.vector-example ol {
    display: grid;
    gap: 0.45rem;
    margin: 0.85rem 0 0;
    padding: 0;
    list-style: none;
}

.vector-example li {
    display: grid;
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 0.45rem;
    align-items: center;
}

.vector-example li span {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    color: var(--blue-dark);
    background: #e7f0ff;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 800;
}

.vector-example li strong {
    color: #405169;
    font-size: 0.8rem;
}

.vector-example__result {
    margin: 0.9rem 0 0;
    padding: 0.65rem 0.72rem;
    color: #08715f;
    background: #def8f1;
    border-radius: 9px;
    font-size: 0.86rem;
    font-weight: 800;
}

.vector-example button {
    width: 100%;
    margin-top: 0.65rem;
}

.vector-facts {
    margin-top: 2.8rem;
}

.vector-facts__heading h2 {
    font-size: clamp(1.35rem, 2.8vw, 1.8rem);
}

.vector-facts__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.vector-facts__grid article {
    padding: 1rem;
    background: #fff;
    border: 1px solid #dfe5ee;
    border-radius: 14px;
}

.vector-facts__grid article > span {
    color: var(--blue-dark);
    font-size: 0.78rem;
    font-weight: 800;
}

.vector-facts__grid h3 {
    margin: 0.45rem 0 0;
    color: #2d3e55;
    font-size: 0.88rem;
}

.vector-facts__grid p {
    margin: 0.35rem 0 0;
    color: #69778a;
    font-size: 0.78rem;
    line-height: 1.6;
}

.vector-faq {
    margin-top: 3rem;
}

@media (max-width: 900px) {
    .vector-workbench,
    .vector-definition {
        grid-template-columns: 1fr;
    }

    .vector-results {
        border-top: 1px solid #203856;
        border-left: 0;
    }
}

@media (max-width: 650px) {
    .vector-page .site-main {
        padding-top: 0.85rem;
    }

    .vector-workbench {
        border-radius: 17px;
    }

    .vector-form,
    .vector-results,
    .vector-definition__main,
    .vector-example {
        padding: 1rem;
    }

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

    .vector-button--primary {
        grid-column: 1 / -1;
    }

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

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

@media (max-width: 440px) {
    .vector-coordinate-fields {
        grid-template-columns: 1fr;
    }

    .vector-input-group legend {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.2rem;
    }

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

    .vector-button--primary {
        grid-column: auto;
    }

    .vector-results__header {
        align-items: flex-start;
        flex-direction: column;
    }
}