.cnas-platform-page,
.cnas-section {
    --cnas-ink: #08245d;
    --cnas-muted: #5f708b;
    --cnas-blue: #0d6efd;
    --cnas-blue-dark: #0754c8;
    --cnas-blue-soft: #edf5ff;
    --cnas-line: #dce8f7;
    --cnas-bg: #f5f8ff;
    --cnas-green: #18a058;
    --cnas-orange: #f97316;
    color: var(--cnas-ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
}

.cnas-platform-page * {
    box-sizing: border-box;
}

.cnas-container {
    width: min(1200px, calc(100% - 36px));
    margin: 0 auto;
}

.cnas-hero {
    padding: 56px 0 46px;
    background:
        linear-gradient(110deg, rgba(247, 251, 255, .98), rgba(255, 255, 255, .96) 48%, rgba(230, 242, 255, .98)),
        url("../../../img/pattern-light.jpg") center/cover no-repeat;
    border-bottom: 1px solid #dce8f7;
}

.cnas-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(340px, .75fr);
    gap: 34px;
    align-items: center;
}

.cnas-kicker {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 12px;
    border: 1px solid #cfe1fb;
    border-radius: 999px;
    background: #fff;
    color: var(--cnas-blue);
    font-size: 12px;
    font-weight: 900;
}

.cnas-hero-copy h1 {
    margin: 18px 0 14px;
    max-width: 720px;
    font-size: 48px;
    line-height: 1.14;
    font-weight: 900;
    color: var(--cnas-ink);
}

.cnas-hero-copy p {
    max-width: 680px;
    margin: 0 0 24px;
    color: #344966;
    font-size: 17px;
    line-height: 1.85;
}

.cnas-actions,
.cnas-card-actions,
.cnas-dashboard-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.cnas-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 18px;
    border-radius: 6px;
    border: 1px solid transparent;
    background: #fff;
    color: var(--cnas-blue);
    font-size: 14px;
    font-weight: 900;
    text-decoration: none;
    cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.cnas-btn:hover {
    transform: translateY(-1px);
    text-decoration: none;
}

.cnas-btn.is-primary {
    background: linear-gradient(180deg, #2f80ff 0%, var(--cnas-blue) 100%);
    color: #fff;
    box-shadow: 0 12px 24px rgba(13, 110, 253, .22);
}

.cnas-btn.is-blue {
    background: var(--cnas-blue-dark);
    color: #fff;
}

.cnas-btn.is-ghost,
.cnas-btn.is-soft {
    border-color: #c9dbf4;
    background: #fff;
}

.cnas-btn.is-soft {
    background: var(--cnas-blue-soft);
}

.cnas-metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin-top: 28px;
    max-width: 680px;
}

.cnas-metric-grid div {
    min-height: 78px;
    padding: 12px;
    border: 1px solid var(--cnas-line);
    border-radius: 8px;
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 10px 22px rgba(19, 64, 130, .06);
}

.cnas-metric-grid strong {
    display: block;
    color: var(--cnas-blue);
    font-size: 28px;
    line-height: 1.05;
    font-weight: 900;
}

.cnas-metric-grid span {
    display: block;
    margin-top: 6px;
    color: var(--cnas-muted);
    font-size: 13px;
}

.cnas-hero-panel {
    min-height: 380px;
    display: grid;
    place-items: center;
}

.cnas-dashboard-card {
    width: min(420px, 100%);
    padding: 22px;
    border: 1px solid #cfe1fb;
    border-radius: 12px;
    background: rgba(255, 255, 255, .9);
    box-shadow: 0 24px 50px rgba(13, 76, 150, .13);
}

.cnas-dashboard-top {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    color: var(--cnas-muted);
    font-size: 13px;
}

.cnas-dashboard-top strong {
    color: var(--cnas-ink);
    font-size: 18px;
}

.cnas-progress-ring {
    width: 174px;
    height: 174px;
    display: grid;
    place-items: center;
    margin: 22px auto;
    border-radius: 50%;
    background: conic-gradient(var(--cnas-blue) 0 68%, #e7effa 68% 100%);
    position: relative;
}

.cnas-progress-ring::after {
    content: "";
    position: absolute;
    inset: 18px;
    border-radius: 50%;
    background: #fff;
}

.cnas-progress-ring span {
    position: relative;
    z-index: 1;
    color: var(--cnas-blue);
    font-size: 30px;
    font-weight: 900;
}

.cnas-dashboard-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.cnas-dashboard-list span {
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 42px;
    padding: 0 10px;
    border-radius: 6px;
    background: var(--cnas-blue-soft);
    color: var(--cnas-ink);
    font-size: 13px;
    font-weight: 800;
}

.cnas-section {
    padding: 42px 0;
    background: #fff;
}

.cnas-soft-section {
    background: var(--cnas-bg);
}

.cnas-section-head {
    max-width: 760px;
    margin: 0 auto 24px;
    text-align: center;
}

.cnas-section-head.is-left {
    margin-left: 0;
    text-align: left;
}

.cnas-section-head span {
    color: var(--cnas-blue);
    font-size: 12px;
    font-weight: 900;
    text-transform: uppercase;
}

.cnas-section-head h2 {
    margin: 8px 0 8px;
    color: var(--cnas-ink);
    font-size: 30px;
    line-height: 1.28;
    font-weight: 900;
}

.cnas-section-head p {
    margin: 0;
    color: var(--cnas-muted);
    line-height: 1.75;
}

.cnas-solution-grid,
.cnas-module-grid,
.cnas-content-grid,
.cnas-plan-grid,
.cnas-dashboard-grid {
    display: grid;
    gap: 16px;
}

.cnas-solution-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

.cnas-solution-card,
.cnas-module-card,
.cnas-content-card,
.cnas-plan-card,
.cnas-dashboard-panel,
.cnas-login-panel,
.cnas-detail-panel,
.cnas-ai-shell,
.cnas-consult-note {
    border: 1px solid var(--cnas-line);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 10px 24px rgba(18, 54, 110, .06);
}

.cnas-solution-card {
    min-height: 110px;
    padding: 16px;
}

.cnas-solution-card span {
    display: block;
    color: #9bb2d0;
    font-size: 12px;
    font-weight: 900;
}

.cnas-solution-card strong {
    display: block;
    margin-top: 18px;
    font-size: 16px;
    line-height: 1.45;
}

.cnas-module-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cnas-module-card {
    min-height: 170px;
    padding: 18px;
}

.cnas-module-card i,
.cnas-card-icon {
    width: 42px;
    height: 42px;
    display: inline-grid;
    place-items: center;
    border-radius: 8px;
    background: var(--cnas-blue-soft);
    color: var(--cnas-blue);
    font-size: 20px;
}

.cnas-module-card h3,
.cnas-content-card h3,
.cnas-plan-card h3,
.cnas-dashboard-panel h3,
.cnas-detail-panel h3 {
    margin: 14px 0 8px;
    color: var(--cnas-ink);
    font-size: 18px;
    line-height: 1.4;
    font-weight: 900;
}

.cnas-module-card p,
.cnas-content-card p,
.cnas-plan-card p,
.cnas-detail-panel p,
.cnas-consult-note p {
    margin: 0;
    color: var(--cnas-muted);
    font-size: 14px;
    line-height: 1.75;
}

.cnas-lesson-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: lesson;
}

.cnas-lesson-list li {
    min-height: 48px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--cnas-line);
    border-radius: 8px;
    background: #fff;
    color: #253b5d;
    font-size: 14px;
    font-weight: 800;
}

.cnas-lesson-list li::before {
    counter-increment: lesson;
    content: counter(lesson, decimal-leading-zero);
    color: var(--cnas-blue);
    font-size: 12px;
    font-weight: 900;
}

.cnas-library-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.cnas-filter {
    min-height: 34px;
    padding: 0 12px;
    border: 1px solid #cfe1fb;
    border-radius: 999px;
    background: #fff;
    color: var(--cnas-blue);
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
}

.cnas-filter.is-active {
    background: var(--cnas-blue);
    color: #fff;
}

.cnas-content-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cnas-content-card {
    min-height: 240px;
    display: flex;
    flex-direction: column;
    padding: 16px;
}

.cnas-card-body {
    flex: 1;
}

.cnas-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 12px;
}

.cnas-card-meta span,
.cnas-card-meta em,
.cnas-plan-badge {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 0 8px;
    border-radius: 999px;
    background: var(--cnas-blue-soft);
    color: var(--cnas-blue);
    font-size: 12px;
    font-style: normal;
    font-weight: 900;
}

.cnas-card-meta em {
    background: #f0fdf6;
    color: var(--cnas-green);
}

.cnas-card-actions {
    margin-top: 16px;
}

.cnas-plan-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cnas-plan-card {
    position: relative;
    min-height: 280px;
    padding: 22px;
}

.cnas-plan-card.is-hot {
    border-color: var(--cnas-blue);
    box-shadow: 0 18px 36px rgba(13, 110, 253, .14);
}

.cnas-plan-badge {
    position: absolute;
    right: 18px;
    top: 18px;
    background: var(--cnas-blue);
    color: #fff;
}

.cnas-plan-price {
    margin: 16px 0;
    color: var(--cnas-blue);
    font-size: 32px;
    line-height: 1;
    font-weight: 900;
}

.cnas-plan-price span,
.cnas-plan-price em {
    font-size: 14px;
    font-style: normal;
}

.cnas-plan-card .cnas-btn {
    margin-top: 20px;
    width: 100%;
}

.cnas-consult-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 18px;
    align-items: start;
}

.cnas-consult-note {
    padding: 20px;
}

.cnas-ai-shell {
    padding: 22px;
}

.cnas-ai-shell.is-compact {
    padding: 0;
    border: 0;
    box-shadow: none;
    background: transparent;
}

.cnas-ai-prompts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.cnas-ai-prompts button {
    min-height: 32px;
    padding: 0 10px;
    border: 1px solid #cfe1fb;
    border-radius: 999px;
    background: #fff;
    color: var(--cnas-blue);
    font-size: 12px;
    font-weight: 800;
    cursor: pointer;
}

.cnas-ai-form {
    display: grid;
    gap: 12px;
}

.cnas-ai-form label,
.cnas-detail-field {
    display: grid;
    gap: 8px;
    color: var(--cnas-ink);
    font-size: 14px;
    font-weight: 900;
}

.cnas-ai-form textarea {
    width: 100%;
    min-height: 132px;
    resize: vertical;
    padding: 12px;
    border: 1px solid #cfe1fb;
    border-radius: 8px;
    color: #253b5d;
    font: inherit;
    line-height: 1.6;
}

.cnas-ai-answer {
    display: none;
    margin-top: 16px;
    padding: 16px;
    border: 1px solid #cfe1fb;
    border-radius: 8px;
    background: #f8fbff;
}

.cnas-ai-answer.is-visible {
    display: block;
}

.cnas-ai-reply h3,
.cnas-ai-reply h4 {
    margin: 0 0 8px;
}

.cnas-ai-reply h4 {
    margin-top: 14px;
    color: var(--cnas-blue);
    font-size: 14px;
}

.cnas-ai-reply p,
.cnas-ai-reply li,
.cnas-ai-disclaimer,
.cnas-ai-note {
    color: var(--cnas-muted);
    font-size: 14px;
    line-height: 1.7;
}

.cnas-ai-disclaimer {
    margin: 12px 0 0;
}

.cnas-dashboard-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr);
}

.cnas-dashboard-panel,
.cnas-login-panel {
    padding: 20px;
}

.cnas-dashboard-panel.is-wide {
    grid-row: span 2;
}

.cnas-course-list,
.cnas-empty-course-list,
.cnas-task-list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.cnas-course-row {
    min-height: 54px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 150px 42px;
    gap: 12px;
    align-items: center;
    padding: 10px 12px;
    border: 1px solid #e2ecf8;
    border-radius: 8px;
    color: var(--cnas-ink);
    text-decoration: none;
}

.cnas-empty-course-list .cnas-course-row {
    grid-template-columns: 1fr auto;
}

.cnas-course-row span {
    height: 8px;
    border-radius: 999px;
    background: #e6eef9;
    overflow: hidden;
}

.cnas-course-row span em {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: var(--cnas-blue);
}

.cnas-course-row b {
    color: var(--cnas-blue);
    font-size: 13px;
}

.cnas-task-list li {
    display: flex;
    gap: 10px;
    padding: 10px;
    border-radius: 8px;
    background: var(--cnas-blue-soft);
    color: #253b5d;
    font-size: 14px;
    line-height: 1.6;
}

.cnas-task-list span {
    color: var(--cnas-blue);
    font-weight: 900;
}

.cnas-detail-hero {
    padding: 42px 0;
    background: var(--cnas-bg);
    border-bottom: 1px solid var(--cnas-line);
}

.cnas-detail-hero h1 {
    max-width: 860px;
    margin: 10px 0 12px;
    color: var(--cnas-ink);
    font-size: 40px;
    line-height: 1.18;
}

.cnas-detail-hero p {
    max-width: 780px;
    margin: 0;
    color: var(--cnas-muted);
    line-height: 1.8;
}

.cnas-detail-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 330px;
    gap: 18px;
    align-items: start;
}

.cnas-detail-panel {
    padding: 22px;
}

.cnas-detail-stack {
    display: grid;
    gap: 16px;
}

.cnas-detail-field strong {
    color: var(--cnas-blue);
}

.cnas-detail-side .cnas-btn {
    width: 100%;
    margin-top: 10px;
}

.cnas-meta-list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.cnas-meta-list li {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e2ecf8;
    color: var(--cnas-muted);
    font-size: 14px;
}

.cnas-meta-list strong {
    color: var(--cnas-ink);
}

@media (max-width: 1100px) {
    .cnas-solution-grid,
    .cnas-content-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .cnas-module-grid,
    .cnas-lesson-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    .cnas-hero-grid,
    .cnas-consult-grid,
    .cnas-dashboard-grid,
    .cnas-detail-grid {
        grid-template-columns: 1fr;
    }

    .cnas-hero-copy h1,
    .cnas-detail-hero h1 {
        font-size: 34px;
    }

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

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

@media (max-width: 560px) {
    .cnas-container {
        width: min(100% - 24px, 1200px);
    }

    .cnas-hero {
        padding: 34px 0;
    }

    .cnas-hero-copy h1,
    .cnas-detail-hero h1 {
        font-size: 30px;
    }

    .cnas-metric-grid,
    .cnas-module-grid,
    .cnas-lesson-list,
    .cnas-content-grid,
    .cnas-plan-grid,
    .cnas-solution-grid {
        grid-template-columns: 1fr;
    }

    .cnas-course-row {
        grid-template-columns: 1fr;
    }

    .cnas-btn {
        width: 100%;
    }
}