/* ===================================================================
   blog.css — blog index + article layout.
   Loaded AFTER v2.css; reuses the --arc-* tokens and .mod-hero.
   =================================================================== */

/* ===== Hero tweaks ===== */
.blog-hero { padding: 150px 0 130px; }
.blog-hero h1 { font-size: clamp(36px, 5vw, 60px); max-width: 960px; }
.blog-hero .mod-hero-sub { margin-bottom: 0; }
.article-hero { padding: 140px 0 130px; }
.article-hero h1 { font-size: clamp(32px, 4.4vw, 54px); line-height: 1.1; max-width: 980px; }
.article-hero .mod-hero-sub { margin-bottom: 28px; }

.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 22px;
    font-size: 14px;
    color: rgba(255,255,255,0.72);
}
.article-meta-author { display: inline-flex; align-items: center; gap: 12px; }
.article-meta-author a { color: #FFFFFF; font-weight: 600; text-decoration: none; }
.article-meta-author a:hover { color: var(--arc-gold); }
.article-meta-avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--arc-gold), var(--arc-gold-2));
    color: var(--arc-navy);
    font-family: 'Poppins', 'Inter', sans-serif;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}
.article-meta-role { display: block; font-size: 12.5px; color: rgba(255,255,255,0.55); }
.article-meta-dot { color: rgba(255,255,255,0.35); }

/* ===== Blog index ===== */
.blog-list { padding: 70px 0 100px; background: #FFFFFF; }
.blog-list-head {
    display: flex; align-items: baseline; justify-content: space-between;
    gap: 16px; flex-wrap: wrap;
    max-width: 1120px; margin: 0 auto 28px;
}
.blog-list-head h2 { font-size: clamp(24px, 3vw, 32px); color: var(--arc-ink); font-weight: 800; }
.blog-list-head p { color: var(--arc-mute); font-size: 15px; }

.blog-featured {
    max-width: 1120px;
    margin: 0 auto 28px;
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    background: var(--arc-bg-soft);
    border: 1px solid var(--arc-line);
    border-radius: var(--arc-radius);
    overflow: hidden;
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.blog-featured:hover { border-color: rgba(244,164,53,0.55); box-shadow: 0 24px 50px -30px rgba(15,23,42,0.35); transform: translateY(-2px); }
.blog-featured-media { display: block; background: var(--arc-navy); }
.blog-featured-media img { display: block; width: 100%; height: 100%; object-fit: cover; aspect-ratio: 1200 / 630; }
.blog-featured-body { padding: 36px 40px; display: flex; flex-direction: column; justify-content: center; }
.blog-featured-body h3 { font-size: clamp(22px, 2.4vw, 30px); line-height: 1.2; margin: 10px 0 14px; }

.blog-grid {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.blog-card {
    display: flex;
    flex-direction: column;
    background: #FFFFFF;
    border: 1px solid var(--arc-line);
    border-radius: var(--arc-radius-sm);
    overflow: hidden;
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.blog-card:hover { border-color: rgba(244,164,53,0.55); box-shadow: 0 22px 44px -30px rgba(15,23,42,0.35); transform: translateY(-2px); }
.blog-card-media { display: block; background: var(--arc-navy); }
.blog-card-media img { display: block; width: 100%; height: auto; aspect-ratio: 1200 / 630; object-fit: cover; }
.blog-card-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.blog-card h3 { font-size: 19px; line-height: 1.3; margin: 10px 0 10px; }

.blog-card h3 a, .blog-featured h3 a { color: var(--arc-ink); text-decoration: none; }
.blog-card h3 a:hover, .blog-featured h3 a:hover { color: var(--arc-blue); }
.blog-card p, .blog-featured p { color: var(--arc-ink-soft); font-size: 15px; line-height: 1.6; margin: 0 0 18px; }
.blog-card-foot {
    margin-top: auto;
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    font-size: 13px; color: var(--arc-mute);
}
.blog-card-more { color: var(--arc-blue); font-weight: 600; text-decoration: none; }
.blog-card-more:hover { color: var(--arc-gold-2); }

.blog-tag {
    display: inline-block;
    align-self: flex-start;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    color: var(--arc-gold-2);
    background: rgba(244,164,53,0.1);
    border-radius: var(--arc-radius-pill);
    padding: 5px 12px;
}

/* ===== Article layout ===== */
.article-shell { padding: 64px 0 40px; background: #FFFFFF; }
.article-grid {
    max-width: 1160px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
}
.article-toc {
    position: sticky;
    top: 96px;
    font-size: 14px;
    border-left: 2px solid var(--arc-line);
    padding-left: 18px;
}
.article-toc summary {
    list-style: none;
    font-size: 11px; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase;
    color: var(--arc-mute);
    margin-bottom: 12px;
    cursor: default;
}
.article-toc summary::-webkit-details-marker { display: none; }
.article-toc ol { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.article-toc a { color: var(--arc-ink-soft); text-decoration: none; line-height: 1.4; display: block; }
.article-toc a:hover, .article-toc a.is-active { color: var(--arc-blue); }
.article-toc a.is-active { font-weight: 600; }

.article-body { max-width: 760px; min-width: 0; }
.article-body > p:first-of-type { font-size: 18.5px; color: var(--arc-ink); }
.article-body p { color: var(--arc-ink-soft); font-size: 17px; line-height: 1.78; margin-bottom: 18px; }
.article-body p strong, .article-body li strong { color: var(--arc-ink); }
.article-body a { color: var(--arc-blue); text-decoration: underline; text-decoration-color: rgba(27,79,114,0.3); text-underline-offset: 3px; }
.article-body a:hover { text-decoration-color: var(--arc-gold); }
.article-body h2 {
    font-size: clamp(25px, 3vw, 32px);
    color: var(--arc-ink);
    font-weight: 800;
    line-height: 1.18;
    margin: 52px 0 18px;
    scroll-margin-top: 96px;
}
.article-body h3 { font-size: 20px; color: var(--arc-ink); font-weight: 700; margin: 30px 0 12px; scroll-margin-top: 96px; }
.article-body ul, .article-body ol { margin: 8px 0 22px; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.article-body ul { list-style: none; }
.article-body ul > li { padding-left: 28px; position: relative; color: var(--arc-ink-soft); font-size: 16.5px; line-height: 1.65; }
.article-body ul > li::before {
    content: "";
    position: absolute; left: 0; top: 6px;
    width: 15px; height: 15px;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 40 40'><path d='M20 0L23 17L40 20L23 23L20 40L17 23L0 20L17 17L20 0Z' fill='%23F4A435'/></svg>");
    background-size: contain; background-repeat: no-repeat;
}
.article-body ol { counter-reset: step; list-style: none; }
.article-body ol > li { counter-increment: step; padding-left: 42px; position: relative; color: var(--arc-ink-soft); font-size: 16.5px; line-height: 1.65; }
.article-body ol > li::before {
    content: counter(step);
    position: absolute; left: 0; top: 0;
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--arc-navy); color: var(--arc-gold);
    font-family: 'Poppins', 'Inter', sans-serif; font-weight: 700; font-size: 13px;
    display: flex; align-items: center; justify-content: center;
}

/* Answer-first summary box */
.article-tldr {
    background: linear-gradient(135deg, #FFF9EF 0%, #FFFFFF 100%);
    border: 1px solid rgba(244,164,53,0.35);
    border-left: 4px solid var(--arc-gold);
    border-radius: var(--arc-radius-sm);
    padding: 24px 28px 10px;
    margin: 0 0 34px;
}
.article-tldr-label {
    display: block;
    font-size: 11px; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase;
    color: var(--arc-gold-2);
    margin-bottom: 10px;
}
.article-tldr ul { margin-top: 0; }
.article-tldr li { font-size: 16px !important; }

.article-callout {
    background: var(--arc-bg-soft);
    border: 1px solid var(--arc-line);
    border-radius: var(--arc-radius-sm);
    padding: 22px 26px;
    margin: 26px 0;
}
.article-callout p:last-child { margin-bottom: 0; }
.article-callout-title { display: block; font-family: 'Poppins', 'Inter', sans-serif; font-weight: 700; color: var(--arc-ink); margin-bottom: 8px; font-size: 16px; }

.article-def {
    margin: 26px 0;
    padding: 20px 26px;
    border-radius: var(--arc-radius-sm);
    background: var(--arc-navy);
    color: rgba(255,255,255,0.85);
}
.article-def p { color: rgba(255,255,255,0.85) !important; margin: 0 !important; font-size: 16.5px !important; }
.article-def dfn, .article-def strong { color: var(--arc-gold); font-style: normal; font-weight: 700; }

.article-quote {
    margin: 30px 0;
    padding: 6px 0 6px 24px;
    border-left: 3px solid var(--arc-gold);
    font-family: 'Poppins', 'Inter', sans-serif;
    font-size: 20px;
    line-height: 1.5;
    color: var(--arc-ink);
    font-weight: 500;
}

.article-table-wrap { overflow-x: auto; margin: 22px 0 28px; border: 1px solid var(--arc-line); border-radius: var(--arc-radius-sm); }
.article-body table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 560px; }
.article-body caption { caption-side: bottom; text-align: left; font-size: 13px; color: var(--arc-mute); padding: 10px 16px; }
.article-body th, .article-body td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--arc-line); vertical-align: top; line-height: 1.5; }
.article-body thead th { background: var(--arc-bg-soft); color: var(--arc-ink); font-weight: 700; font-size: 13px; letter-spacing: 0.4px; }
.article-body tbody tr:last-child td { border-bottom: none; }
.article-body td { color: var(--arc-ink-soft); }
.article-body td strong { color: var(--arc-ink); }

.article-figure { margin: 28px 0; }
.article-figure svg { display: block; width: 100%; height: auto; }
.article-figure figcaption { font-size: 13.5px; color: var(--arc-mute); margin-top: 10px; text-align: center; }

.article-body .mod-guide-card { margin: 38px 0; }
.article-body .mod-guide-card h3 { margin-top: 0; }
.article-body .mod-guide-card a.btn { color: #FFFFFF; text-decoration: none; }

/* FAQ */
.article-faq { margin-top: 10px; display: flex; flex-direction: column; gap: 12px; }
.article-faq details {
    border: 1px solid var(--arc-line);
    border-radius: var(--arc-radius-sm);
    background: #FFFFFF;
    padding: 0 22px;
}
.article-faq details[open] { border-color: rgba(244,164,53,0.45); background: #FFFCF6; }
.article-faq summary {
    cursor: pointer;
    list-style: none;
    padding: 18px 28px 18px 0;
    font-family: 'Poppins', 'Inter', sans-serif;
    font-weight: 600;
    font-size: 16.5px;
    color: var(--arc-ink);
    position: relative;
}
.article-faq summary::-webkit-details-marker { display: none; }
.article-faq summary::after {
    content: "+";
    position: absolute; right: 0; top: 14px;
    font-size: 22px; color: var(--arc-gold-2); font-weight: 400;
}
.article-faq details[open] summary::after { content: "\2212"; }
.article-faq details > div { padding: 0 0 6px; }

/* Author box (E-E-A-T) */
.article-author {
    margin: 52px 0 10px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 26px 28px;
    border: 1px solid var(--arc-line);
    border-radius: var(--arc-radius-sm);
    background: var(--arc-bg-soft);
}
.article-author .article-meta-avatar { width: 56px; height: 56px; font-size: 18px; }
.article-author h2 { font-size: 18px !important; margin: 0 0 4px !important; }
.article-author-role { font-size: 13.5px; color: var(--arc-mute); margin-bottom: 10px !important; }
.article-author p { font-size: 15px !important; margin-bottom: 8px !important; }
.article-updated { font-size: 13.5px !important; color: var(--arc-mute) !important; margin-top: 26px; }

/* Related */
.article-related { padding: 70px 0 90px; background: var(--arc-bg-soft); }
.article-related h2 { text-align: center; font-size: clamp(24px, 3vw, 32px); margin-bottom: 30px; color: var(--arc-ink); font-weight: 800; }

/* Breadcrumb inside hero uses .mod-breadcrumb (v2.css) as an <ol> */
ol.mod-breadcrumb { list-style: none; padding: 0; flex-wrap: wrap; }
ol.mod-breadcrumb li { display: inline-flex; align-items: center; gap: 10px; }
ol.mod-breadcrumb li + li::before { content: "\203A"; color: rgba(255,255,255,0.4); }
ol.mod-breadcrumb [aria-current] { color: rgba(255,255,255,0.75); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .article-grid { grid-template-columns: 1fr; gap: 0; }
    .article-toc {
        position: static;
        border: 1px solid var(--arc-line);
        border-radius: var(--arc-radius-sm);
        padding: 14px 18px;
        margin-bottom: 30px;
        background: var(--arc-bg-soft);
    }
    .article-toc summary { cursor: pointer; margin: 0; }
    .article-toc summary::after { content: " +"; color: var(--arc-gold-2); }
    .article-toc[open] summary { margin-bottom: 12px; }
    .article-toc[open] summary::after { content: " \2212"; }
    .article-body { max-width: 100%; }
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .blog-featured { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .blog-hero, .article-hero { padding: 120px 0 100px; }
    .blog-grid { grid-template-columns: 1fr; }
    .blog-featured-body { padding: 26px 22px; }
    .article-shell { padding-top: 40px; }
    .article-body p { font-size: 16.5px; }
    .article-author { flex-direction: column; padding: 22px; }
    .article-tldr { padding: 20px 20px 6px; }
}