.column-page {
    background: #fbfcff;
}

.column-main {
    padding-top: 80px;
}

.column-hero {
    padding: 72px 24px 64px;
    background:
        radial-gradient(circle at 88% 12%, rgba(7, 92, 250, 0.10), transparent 34%),
        linear-gradient(145deg, #ffffff, #f3f7ff);
    border-bottom: 1px solid #e3eaf6;
}

.column-hero__inner,
.column-list,
.article-layout {
    width: min(1120px, 100%);
    margin: 0 auto;
}

.column-eyebrow,
.article-category {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    color: #075cfa;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.column-eyebrow::before,
.article-category::before {
    content: "";
    width: 28px;
    height: 2px;
    background: #075cfa;
}

.title-chunk {
    display: inline-block;
    white-space: nowrap;
}

.column-hero h1 {
    max-width: 760px;
    margin: 0 0 18px;
    color: #08285f;
    font-size: clamp(2.25rem, 5vw, 4rem);
    line-height: 1.25;
    letter-spacing: -0.04em;
}

.column-hero p {
    max-width: 700px;
    color: #4e6587;
    font-size: 1.05rem;
    line-height: 1.9;
}

.column-list {
    padding: 64px 24px 88px;
}

.column-group + .column-group {
    margin-top: 64px;
}

.column-group__head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
}

.column-group__head h2 {
    color: #08285f;
    font-size: clamp(1.55rem, 3vw, 2.15rem);
    line-height: 1.4;
}

.column-group__head p {
    max-width: 480px;
    color: #60779c;
    font-size: 0.92rem;
}

.column-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.column-card {
    display: flex;
    min-height: 100%;
    flex-direction: column;
    padding: 28px;
    color: #29466f;
    background: #fff;
    border: 1px solid #dce6f5;
    border-radius: 20px;
    box-shadow: 0 10px 28px rgba(8, 43, 104, 0.055);
}

.column-card:hover {
    color: #29466f;
    border-color: #b9cff6;
    box-shadow: 0 16px 34px rgba(8, 43, 104, 0.10);
    transform: translateY(-3px);
}

.column-card__tag {
    align-self: flex-start;
    margin-bottom: 16px;
    padding: 5px 10px;
    color: #075cfa;
    background: #edf4ff;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 800;
}

.column-card h3 {
    margin-bottom: 12px;
    color: #08285f;
    font-size: 1.18rem;
    line-height: 1.55;
    line-break: strict;
    word-break: auto-phrase;
    text-wrap: pretty;
}

.column-card p {
    margin-bottom: 22px;
    color: #60779c;
    font-size: 0.9rem;
    line-height: 1.75;
}

.column-card__link {
    margin-top: auto;
    color: #075cfa;
    font-size: 0.86rem;
    font-weight: 800;
}

.article-hero {
    padding: 58px 24px 46px;
    background: linear-gradient(145deg, #ffffff, #f4f8ff);
    border-bottom: 1px solid #e3eaf6;
}

.article-hero__inner {
    width: min(920px, 100%);
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 34px;
    color: #7183a0;
    font-size: 0.78rem;
}

.breadcrumb a {
    color: #526b92;
}

.article-hero h1 {
    max-width: 850px;
    margin: 0 0 22px;
    color: #08285f;
    font-size: clamp(2rem, 4.4vw, 3.35rem);
    line-height: 1.35;
    letter-spacing: -0.035em;
}

.article-lead {
    max-width: 760px;
    margin-bottom: 24px;
    color: #4e6587;
    font-size: 1.04rem;
    line-height: 1.95;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    color: #7183a0;
    font-size: 0.78rem;
}

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 760px) 280px;
    align-items: start;
    justify-content: space-between;
    gap: 56px;
    padding: 56px 24px 88px;
}

.article-body {
    min-width: 0;
    color: #243f67;
    font-size: 1rem;
    line-height: 2;
}

.article-body h2 {
    margin: 2.8em 0 0.9em;
    padding-bottom: 0.45em;
    color: #08285f;
    font-size: clamp(1.45rem, 3vw, 1.9rem);
    line-height: 1.5;
    border-bottom: 2px solid #dbe7fb;
}

.article-body h2:first-child {
    margin-top: 0;
}

.article-body h3 {
    margin: 2em 0 0.65em;
    color: #0a397c;
    font-size: 1.22rem;
    line-height: 1.55;
}

.article-body p + p {
    margin-top: 1.2em;
}

.article-body ul,
.article-body ol {
    margin: 1.2em 0;
    padding-left: 1.4em;
}

.article-body li + li {
    margin-top: 0.55em;
}

.article-note,
.article-check,
.article-example {
    margin: 2em 0;
    padding: 22px 24px;
    background: #f3f7ff;
    border: 1px solid #dbe7fb;
    border-radius: 16px;
}

.article-note strong,
.article-check strong,
.article-example strong {
    display: block;
    margin-bottom: 6px;
    color: #075cfa;
}

.article-body table {
    width: 100%;
    margin: 1.8em 0;
    border-collapse: collapse;
    background: #fff;
    font-size: 0.9rem;
}

.article-body th,
.article-body td {
    padding: 13px 14px;
    text-align: left;
    vertical-align: top;
    border: 1px solid #dce6f5;
}

.article-body th {
    color: #08285f;
    background: #edf4ff;
}

.article-cta {
    margin-top: 54px;
    padding: 30px;
    color: #fff;
    background: linear-gradient(125deg, #075cfa, #073db3);
    border-radius: 22px;
}

.article-cta h2 {
    margin: 0 0 10px;
    padding: 0;
    color: #fff;
    border: 0;
}

.article-cta p {
    color: rgba(255, 255, 255, 0.86);
}

.article-cta a {
    display: inline-flex;
    margin-top: 20px;
    padding: 13px 22px;
    color: #075cfa;
    background: #fff;
    border-radius: 999px;
    font-weight: 800;
}

.article-side {
    position: sticky;
    top: 106px;
    padding: 24px;
    background: #fff;
    border: 1px solid #dce6f5;
    border-radius: 18px;
}

.article-side h2 {
    margin-bottom: 14px;
    color: #08285f;
    font-size: 1rem;
}

.article-side ul {
    list-style: none;
}

.article-side li + li {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid #edf1f7;
}

.article-side a {
    color: #405b83;
    font-size: 0.84rem;
    line-height: 1.55;
}

@media (max-width: 900px) {
    .column-grid { grid-template-columns: 1fr; }
    .column-group__head { display: block; }
    .column-group__head p { margin-top: 10px; }
    .article-layout { grid-template-columns: 1fr; }
    .article-side { position: static; }
}

@media (max-width: 600px) {
    .column-main { padding-top: 68px; }
    .column-hero { padding: 48px 18px 44px; }
    .column-list { padding: 42px 16px 64px; }
    .column-card { padding: 22px; border-radius: 16px; }
    .article-hero { padding: 34px 18px 32px; }
    .breadcrumb { margin-bottom: 24px; }
    .article-layout { gap: 32px; padding: 36px 18px 64px; }
    .article-body { font-size: 0.95rem; line-height: 1.95; }
    .article-body table { display: block; overflow-x: auto; white-space: nowrap; }
    .article-note, .article-check, .article-example { padding: 18px; }
    .article-cta { padding: 24px 20px; }
}