:root {
    --radar-bg: #f5f7fb;
    --radar-bg-top: #eef3fa;
    --radar-surface: #ffffff;
    --radar-surface-soft: #f1f5fa;
    --radar-surface-warm: #fff8f2;
    --radar-line: #dce4ef;
    --radar-line-strong: #c8d4e3;
    --radar-text: #172236;
    --radar-text-soft: #53627a;
    --radar-text-faint: #7c899c;
    --radar-blue: #315fc4;
    --radar-blue-dark: #234487;
    --radar-blue-soft: #e9f0ff;
    --radar-coral: #bd654f;
    --radar-coral-soft: #fff0e9;
    --radar-green: #2f7961;
    --radar-green-soft: #e8f5ee;
    --radar-amber: #9a6721;
    --radar-amber-soft: #fff4da;
    --radar-shadow: 0 18px 42px rgba(35, 61, 98, 0.08);
    --radar-shadow-hover: 0 22px 48px rgba(35, 61, 98, 0.14);
    --radar-focus: 0 0 0 3px rgba(49, 95, 196, 0.2);
    --radar-radius-sm: 10px;
    --radar-radius-md: 16px;
    --radar-radius-lg: 24px;
    --radar-space-1: 4px;
    --radar-space-2: 8px;
    --radar-space-3: 12px;
    --radar-space-4: 16px;
    --radar-space-5: 20px;
    --radar-space-6: 24px;
    --radar-space-7: 32px;
    --radar-space-8: 40px;
    --radar-space-9: 56px;
    --radar-max-width: 1240px;
    --radar-font: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    --radar-transition: 180ms ease;
}

* {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    background: linear-gradient(180deg, var(--radar-bg-top) 0, var(--radar-bg) 460px);
    color: var(--radar-text);
    font-family: var(--radar-font);
    line-height: 1.5;
}

a {
    color: inherit;
}

button,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

[hidden] {
    display: none !important;
}

:focus-visible {
    outline: 3px solid var(--radar-blue);
    outline-offset: 3px;
    box-shadow: var(--radar-focus);
}

.site-header {
    border-bottom: 1px solid var(--radar-line);
    background: var(--radar-surface);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--radar-space-6);
    max-width: var(--radar-max-width);
    min-height: 72px;
    margin: 0 auto;
    padding: var(--radar-space-4) var(--radar-space-6);
}

.brand-link {
    display: inline-flex;
    align-items: center;
    gap: var(--radar-space-3);
    color: var(--radar-text-soft);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-decoration: none;
}

.brand-mark {
    display: inline-grid;
    width: 28px;
    height: 28px;
    place-items: center;
    border-radius: var(--radar-radius-sm);
    background: var(--radar-blue-dark);
    color: var(--radar-surface);
    font-size: 1rem;
    letter-spacing: 0;
}

.header-meta {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: var(--radar-space-4);
}

.semantic-nav {
    flex: 1 1 auto;
    min-width: 0;
}

.semantic-nav-list {
    display: flex;
    justify-content: center;
    gap: var(--radar-space-1);
    margin: 0;
    padding: 0;
    list-style: none;
}

.semantic-nav a {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    padding: 0 var(--radar-space-3);
    border: 1px solid transparent;
    border-radius: 999px;
    color: var(--radar-text-soft);
    font-size: 0.76rem;
    font-weight: 800;
    text-decoration: none;
    white-space: nowrap;
    transition: background var(--radar-transition), border-color var(--radar-transition), color var(--radar-transition);
}

.semantic-nav a:hover {
    border-color: var(--radar-line);
    background: var(--radar-surface-soft);
    color: var(--radar-blue-dark);
}

.semantic-nav a[aria-current="step"] {
    border-color: var(--radar-blue);
    background: var(--radar-blue-soft);
    color: var(--radar-blue-dark);
}

.eyebrow,
.section-kicker,
.note-index {
    color: var(--radar-coral);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.review-chip {
    display: inline-flex;
    min-height: 30px;
    align-items: center;
    padding: 0 var(--radar-space-3);
    border: 1px solid var(--radar-line);
    border-radius: 999px;
    background: var(--radar-surface-soft);
    color: var(--radar-text-soft);
    font-size: 0.72rem;
    font-weight: 700;
}

.radar-main {
    max-width: var(--radar-max-width);
    margin: 0 auto;
    padding: var(--radar-space-9) var(--radar-space-6) var(--radar-space-9);
}

.hero-block {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(250px, 0.7fr);
    align-items: end;
    gap: var(--radar-space-8);
    margin-bottom: var(--radar-space-8);
}

.hero-copy {
    max-width: 720px;
}

.hero-copy .section-kicker,
.section-heading .section-kicker,
.filter-heading .section-kicker,
.results-heading .section-kicker {
    margin: 0 0 var(--radar-space-3);
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: var(--radar-space-3);
    color: var(--radar-text);
    font-size: clamp(2.5rem, 5vw, 4.4rem);
    font-weight: 800;
    letter-spacing: -0.07em;
    line-height: 0.98;
}

h2 {
    margin-bottom: 0;
    font-size: clamp(1.4rem, 2.5vw, 2rem);
    letter-spacing: -0.04em;
    line-height: 1.15;
}

h3 {
    margin-bottom: var(--radar-space-2);
    font-size: 1rem;
    line-height: 1.3;
}

.hero-lede {
    margin-bottom: var(--radar-space-3);
    color: var(--radar-blue-dark);
    font-size: clamp(1.1rem, 2vw, 1.45rem);
    font-weight: 700;
    letter-spacing: -0.03em;
}

.hero-description {
    max-width: 680px;
    margin-bottom: 0;
    color: var(--radar-text-soft);
    font-size: 0.98rem;
}

.hero-note {
    display: grid;
    gap: var(--radar-space-2);
    padding: var(--radar-space-5);
    border: 1px solid var(--radar-line);
    border-radius: var(--radar-radius-md);
    background: var(--radar-surface-warm);
    box-shadow: var(--radar-shadow);
}

.hero-note strong {
    font-size: 0.95rem;
}

.hero-note span:last-child {
    color: var(--radar-text-soft);
    font-size: 0.82rem;
}

.trust-panel {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: var(--radar-space-4);
    margin-bottom: var(--radar-space-9);
    padding: var(--radar-space-5) var(--radar-space-6);
    border: 1px solid var(--radar-line);
    border-radius: var(--radar-radius-md);
    background: var(--radar-surface);
    box-shadow: var(--radar-shadow);
}

.trust-icon {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border-radius: 50%;
    background: var(--radar-green-soft);
    color: var(--radar-green);
    font-size: 1.45rem;
    font-weight: 700;
}

.trust-heading {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--radar-space-3);
    margin-bottom: var(--radar-space-1);
}

.trust-heading h2 {
    font-size: 1rem;
    letter-spacing: -0.02em;
}

.trust-copy p {
    margin-bottom: 0;
    color: var(--radar-text-soft);
    font-size: 0.82rem;
}

.status-label {
    color: var(--radar-green);
    font-size: 0.72rem;
    font-weight: 800;
}

.status-label-error {
    color: var(--radar-coral);
}

.trust-facts {
    display: grid;
    grid-template-columns: auto auto;
    align-items: baseline;
    column-gap: var(--radar-space-3);
    row-gap: var(--radar-space-1);
    min-width: 180px;
    padding-left: var(--radar-space-5);
    border-left: 1px solid var(--radar-line);
}

.fact-label {
    color: var(--radar-text-faint);
    font-size: 0.68rem;
}

.trust-facts strong {
    color: var(--radar-text-soft);
    font-size: 0.78rem;
    font-weight: 700;
}

.intent-section,
.filter-section,
.sources-section,
.workflow-section {
    margin-bottom: var(--radar-space-9);
}

.section-heading,
.filter-heading,
.results-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: var(--radar-space-6);
    margin-bottom: var(--radar-space-5);
}

.section-aside {
    max-width: 260px;
    margin-bottom: 0;
    color: var(--radar-text-faint);
    font-size: 0.78rem;
    text-align: right;
}

.intent-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--radar-space-3);
}

.intent-card {
    position: relative;
    display: flex;
    min-width: 0;
    min-height: 170px;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--radar-space-5);
    border: 1px solid var(--radar-line);
    border-radius: var(--radar-radius-md);
    background: var(--radar-surface);
    color: var(--radar-text);
    text-align: left;
    transition: border-color var(--radar-transition), box-shadow var(--radar-transition), transform var(--radar-transition);
}

.intent-card:hover {
    border-color: var(--radar-blue);
    box-shadow: var(--radar-shadow-hover);
    transform: translateY(-2px);
}

.intent-card[aria-pressed="true"] {
    border-color: var(--radar-blue);
    background: var(--radar-blue-soft);
    box-shadow: var(--radar-shadow);
}

.intent-card[aria-pressed="true"]::after {
    position: absolute;
    top: var(--radar-space-4);
    right: var(--radar-space-4);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--radar-coral);
    content: "";
}

.intent-number {
    margin-bottom: var(--radar-space-5);
    color: var(--radar-coral);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.12em;
}

.intent-card h3 {
    margin-bottom: var(--radar-space-2);
    font-size: 1.1rem;
}

.intent-card p {
    margin-bottom: var(--radar-space-4);
    color: var(--radar-text-soft);
    font-size: 0.8rem;
}

.intent-card .intent-foot {
    display: flex;
    align-items: center;
    gap: var(--radar-space-2);
    margin-top: auto;
    color: var(--radar-blue-dark);
    font-size: 0.7rem;
    font-weight: 800;
}

.filter-section {
    padding: var(--radar-space-6);
    border: 1px solid var(--radar-line);
    border-radius: var(--radar-radius-lg);
    background: var(--radar-surface);
    box-shadow: var(--radar-shadow);
}

.filter-heading {
    align-items: start;
}

.active-intent {
    margin: var(--radar-space-3) 0 0;
    color: var(--radar-blue-dark);
    font-size: 0.8rem;
}

.button {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 0 var(--radar-space-4);
    border: 1px solid transparent;
    border-radius: var(--radar-radius-sm);
    font-size: 0.8rem;
    font-weight: 800;
    transition: background-color var(--radar-transition), border-color var(--radar-transition), color var(--radar-transition);
}

.button-quiet {
    border-color: var(--radar-line-strong);
    background: var(--radar-surface);
    color: var(--radar-text-soft);
}

.button-quiet:hover {
    border-color: var(--radar-blue);
    color: var(--radar-blue-dark);
}

.button-primary {
    border-color: var(--radar-blue);
    background: var(--radar-blue);
    color: var(--radar-surface);
}

.button-primary:hover {
    border-color: var(--radar-blue-dark);
    background: var(--radar-blue-dark);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--radar-space-3);
}

.filter-control {
    display: grid;
    gap: var(--radar-space-2);
    min-width: 0;
}

.filter-control > span {
    color: var(--radar-text-faint);
    font-size: 0.72rem;
    font-weight: 800;
}

.filter-control select {
    width: 100%;
    min-height: 44px;
    padding: 0 var(--radar-space-3);
    border: 1px solid var(--radar-line-strong);
    border-radius: var(--radar-radius-sm);
    background: var(--radar-surface);
    color: var(--radar-text);
}

.filter-control select:hover {
    border-color: var(--radar-blue);
}

.results-heading {
    align-items: end;
}

.results-summary {
    margin-bottom: 0;
    color: var(--radar-text-soft);
    font-size: 0.8rem;
    font-weight: 800;
}

.source-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--radar-space-4);
}

.source-card {
    display: flex;
    min-width: 0;
    min-height: 390px;
    flex-direction: column;
    padding: var(--radar-space-5);
    border: 1px solid var(--radar-line);
    border-radius: var(--radar-radius-md);
    background: var(--radar-surface);
    text-decoration: none;
    transition: border-color var(--radar-transition), box-shadow var(--radar-transition), transform var(--radar-transition);
}

.source-card:hover {
    border-color: var(--radar-blue);
    box-shadow: var(--radar-shadow-hover);
    transform: translateY(-2px);
}

.source-card-top,
.source-card-footer,
.source-meta,
.source-action {
    display: flex;
    align-items: center;
}

.source-card-top,
.source-card-footer {
    justify-content: space-between;
    gap: var(--radar-space-3);
}

.source-card-top {
    margin-bottom: var(--radar-space-4);
}

.source-type {
    color: var(--radar-coral);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.manual-status {
    display: inline-flex;
    align-items: center;
    gap: var(--radar-space-1);
    color: var(--radar-green);
    font-size: 0.66rem;
    font-weight: 700;
    white-space: nowrap;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--radar-green);
}

.source-card h3 {
    margin-bottom: var(--radar-space-2);
    color: var(--radar-text);
    font-size: 1.12rem;
}

.source-description {
    min-height: 48px;
    margin-bottom: var(--radar-space-4);
    color: var(--radar-text-soft);
    font-size: 0.82rem;
    line-height: 1.55;
}

.source-meta {
    flex-wrap: wrap;
    gap: var(--radar-space-2);
    margin-bottom: var(--radar-space-4);
}

.meta-chip {
    padding: var(--radar-space-1) var(--radar-space-2);
    border-radius: 999px;
    background: var(--radar-surface-soft);
    color: var(--radar-text-soft);
    font-size: 0.66rem;
    font-weight: 700;
}

.meta-chip.priority-core {
    background: var(--radar-blue-soft);
    color: var(--radar-blue-dark);
}

.meta-chip.priority-supporting {
    background: var(--radar-amber-soft);
    color: var(--radar-amber);
}

.meta-chip.priority-watch {
    background: var(--radar-coral-soft);
    color: var(--radar-coral);
}

.source-card-details {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--radar-space-2);
    margin-bottom: var(--radar-space-4);
}

.source-detail {
    min-width: 0;
    padding: var(--radar-space-3);
    border-radius: var(--radar-radius-sm);
    background: var(--radar-surface-soft);
}

.source-detail-label,
.retention-label {
    display: block;
    margin-bottom: var(--radar-space-1);
    color: var(--radar-text-faint);
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.source-detail p,
.retention-copy {
    margin-bottom: 0;
    color: var(--radar-text-soft);
    font-size: 0.72rem;
    line-height: 1.55;
}

.retention-block {
    min-height: 72px;
    margin-top: auto;
    padding-top: var(--radar-space-4);
    border-top: 1px solid var(--radar-line);
}

.source-card-footer {
    align-items: end;
    margin-top: var(--radar-space-4);
}

.checked-date {
    color: var(--radar-text-faint);
    font-size: 0.66rem;
}

.source-action {
    gap: var(--radar-space-1);
    color: var(--radar-blue-dark);
    font-size: 0.72rem;
    font-weight: 800;
}

.empty-state {
    display: grid;
    justify-items: center;
    gap: var(--radar-space-3);
    padding: var(--radar-space-9) var(--radar-space-6);
    border: 1px dashed var(--radar-line-strong);
    border-radius: var(--radar-radius-md);
    background: var(--radar-surface);
    text-align: center;
}

.empty-icon {
    color: var(--radar-coral);
    font-size: 2rem;
    font-weight: 300;
}

.empty-state h3 {
    margin-bottom: 0;
}

.empty-state p {
    margin-bottom: var(--radar-space-2);
    color: var(--radar-text-soft);
    font-size: 0.82rem;
}

.workflow-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--radar-space-3);
    margin: 0 0 var(--radar-space-5);
    padding: 0;
    list-style: none;
    counter-reset: workflow-step;
}

.workflow-step {
    position: relative;
    display: flex;
    min-width: 0;
    min-height: 166px;
    flex-direction: column;
    padding: var(--radar-space-5);
    border: 1px solid var(--radar-line);
    border-radius: var(--radar-radius-md);
    background: var(--radar-surface);
}

.workflow-step::before {
    counter-increment: workflow-step;
    content: "0" counter(workflow-step);
    margin-bottom: var(--radar-space-5);
    color: var(--radar-coral);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.12em;
}

.workflow-step h3 {
    margin-bottom: var(--radar-space-2);
}

.workflow-step p {
    margin-bottom: var(--radar-space-4);
    color: var(--radar-text-soft);
    font-size: 0.78rem;
}

.workflow-step a {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    margin-top: auto;
    color: var(--radar-blue-dark);
    font-size: 0.72rem;
    font-weight: 800;
    text-decoration: none;
}

.next-step-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--radar-space-6);
    padding: var(--radar-space-5) var(--radar-space-6);
    border: 1px solid var(--radar-blue);
    border-radius: var(--radar-radius-md);
    background: var(--radar-blue-soft);
}

.next-step-panel > div {
    display: grid;
    gap: var(--radar-space-1);
}

.next-step-panel strong {
    font-size: 0.92rem;
}

.next-step-panel span:last-child {
    color: var(--radar-text-soft);
    font-size: 0.78rem;
}

.next-step-link {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    gap: var(--radar-space-2);
    flex-shrink: 0;
    padding: 0 var(--radar-space-4);
    border-radius: var(--radar-radius-sm);
    background: var(--radar-blue);
    color: var(--radar-surface);
    font-size: 0.78rem;
    font-weight: 800;
    text-decoration: none;
}

.next-step-link:hover {
    background: var(--radar-blue-dark);
}

.site-footer {
    display: flex;
    justify-content: space-between;
    gap: var(--radar-space-4);
    max-width: var(--radar-max-width);
    margin: 0 auto;
    padding: 0 var(--radar-space-6) var(--radar-space-8);
    color: var(--radar-text-faint);
    font-size: 0.7rem;
}

.site-footer p {
    margin-bottom: 0;
}

.data-error {
    display: grid;
    gap: var(--radar-space-1);
    max-width: var(--radar-max-width);
    margin: 0 auto var(--radar-space-8);
    padding: var(--radar-space-5) var(--radar-space-6);
    border: 1px solid var(--radar-coral);
    border-radius: var(--radar-radius-md);
    background: var(--radar-coral-soft);
    color: var(--radar-coral);
}

.data-error span {
    color: var(--radar-text-soft);
    font-size: 0.8rem;
}

@media (max-width: 1080px) {
    .intent-grid,
    .workflow-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .source-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .radar-main {
        padding-top: var(--radar-space-8);
    }

    .hero-block,
    .trust-panel {
        grid-template-columns: 1fr;
    }

    .hero-note {
        max-width: none;
    }

    .trust-facts {
        min-width: 0;
        padding-top: var(--radar-space-4);
        padding-left: 0;
        border-top: 1px solid var(--radar-line);
        border-left: 0;
    }

    .filter-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .section-heading,
    .filter-heading,
    .results-heading,
    .next-step-panel {
        align-items: flex-start;
        flex-direction: column;
    }

    .section-aside {
        max-width: none;
        text-align: left;
    }

    .next-step-link {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 560px) {
    .header-inner {
        align-items: flex-start;
        flex-direction: column;
        gap: var(--radar-space-3);
        padding: var(--radar-space-4);
    }

    .header-meta {
        justify-content: flex-start;
    }

    .semantic-nav {
        width: 100%;
        overflow-x: auto;
    }

    .semantic-nav-list {
        justify-content: flex-start;
    }

    .radar-main {
        padding-right: var(--radar-space-4);
        padding-left: var(--radar-space-4);
    }

    h1 {
        font-size: 3rem;
    }

    .trust-panel,
    .filter-section {
        padding: var(--radar-space-5);
    }

    .intent-grid,
    .source-grid,
    .workflow-grid,
    .filter-grid {
        grid-template-columns: 1fr;
    }

    .intent-card {
        min-height: 148px;
    }

    .source-card {
        min-height: 0;
    }

    .site-footer {
        align-items: flex-start;
        flex-direction: column;
        padding-right: var(--radar-space-4);
        padding-left: var(--radar-space-4);
    }
}