.breadcrumb { display: flex; flex-wrap: wrap; gap: 10px; padding: 26px 0; color: var(--color-muted); font-size: .8rem; }
.breadcrumb a { color: var(--color-primary); font-weight: 800; }
.article-hero { padding: 58px 0 76px; background: var(--color-soft); }
.article-hero--moq { position:relative; overflow:hidden; color:#fff; background:linear-gradient(90deg,rgba(0,70,70,.96),rgba(0,127,127,.76)),url("../../../images/article/what-is-moq/moq-hero.jpg") center/cover; }
.article-hero--moq .article-hero__copy > p:not(.eyebrow), .article-hero--moq .article-meta { color:#d9f3f3; }
.article-hero--moq .eyebrow { color:#a9eeee; }
.article-hero--moq h1 { color:#fff; }
.article-hero--hf { position:relative; overflow:hidden; color:#fff; background:linear-gradient(90deg,rgba(0,70,70,.96),rgba(0,127,127,.76)),url("../../../images/article/what-is-high-frequency-welding-for-pvc-bags/hf-welding-hero.jpg") center/cover; }
.article-hero--hf .article-hero__copy > p:not(.eyebrow), .article-hero--hf .article-meta { color:#d9f3f3; }
.article-hero--hf .eyebrow { color:#a9eeee; }
.article-hero--hf h1 { color:#fff; }
.article-hero__grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); gap: clamp(44px, 8vw, 118px); align-items: center; }
.article-hero h1 { max-width: 720px; margin-bottom: 20px; font-size: clamp(2.8rem, 5.1vw, 4.9rem); }
.article-hero__copy > p:not(.eyebrow) { max-width: 670px; margin-bottom: 22px; color: var(--color-muted); font-size: 1.1rem; }
.article-meta { display: flex; flex-wrap: wrap; gap: 9px; color: var(--color-muted); font-size: .78rem; font-weight: 700; }
.quick-reference { display: grid; grid-template-columns: 155px 1fr; min-height: 300px; overflow: hidden; border-radius: var(--radius-large); background: var(--color-primary); box-shadow: var(--shadow); }
.quick-reference > img { width: 100%; height: 100%; object-fit: cover; }
.quick-reference > div { padding: 28px; color: #fff; }
.quick-reference .eyebrow { color: #c5dce8; }
.quick-reference h2 { margin-bottom: 17px; font-size: 1.55rem; letter-spacing: -.025em; }
.quick-reference dl { display: grid; margin: 0; }
.quick-reference dl div { display: grid; grid-template-columns: .85fr 1.15fr; gap: 16px; padding: 9px 0; border-top: 1px solid rgba(255, 255, 255, .18); }
.quick-reference dt { color: #c5dce8; font-size: .72rem; font-weight: 700; }
.quick-reference dd { margin: 0; font-size: .78rem; font-weight: 800; }
.article-layout { display: grid; grid-template-columns: 180px minmax(0, 920px); gap: clamp(42px, 7vw, 100px); align-items: start; }
.article-reading { min-width: 0; padding: 90px 0 112px; }
.article-toc { position: sticky; top: 110px; display: grid; gap: 8px; height: fit-content; margin-top: 94px; padding-left: 16px; border-left: 1px solid var(--color-line); font-size: .78rem; }
.article-toc p { margin: 0 0 4px; color: var(--color-primary); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.article-toc a { color: var(--color-muted); }
.article-toc a:hover { color: var(--color-primary); }
.article-section { padding-bottom: 92px; }
.article-page .section-reveal { opacity: 1; transform: none; }
/* Product-only image replacements for the article. */
.article-page img[src$="specifications.jpg"] { content: url("../../../images/article/article-1/stock/stock-black-stone.jpg"); }
.article-page img[src$="earbuds-comparison.jpg"] { content: url("../../../images/article/article-1/stock/stock-table.jpg"); }
.article-page img[src$="open-ear-earbuds.jpg"] { content: url("../../../images/article/article-1/stock/stock-white-case.jpg"); }
.article-page img[src$="anc-earbuds.jpg"] { content: url("../../../images/article/article-1/stock/stock-neon-case.jpg"); }
.article-page img[src$="use-cases.jpg"] { content: url("../../../images/article/article-1/stock/stock-mono-case.jpg"); }
.article-page img[src$="choosing-earbuds.jpg"] { content: url("../../../images/article/article-1/stock/stock-top-view.jpg"); }
.article-page img[src$="wholesale-earbuds.jpg"] { content: url("../../../images/article/article-1/stock/stock-display.jpg"); }
.article-page img[src$="earbuds-faq.jpg"] { content: url("../../../images/article/article-1/stock/stock-case-detail.jpg"); }
.article-page img[src$="hero-earbuds-studio-v2.jpg"] { content: url("../../../images/article/article-1/stock/stock-dramatic.jpg"); }
.article-page img[src$="buyer-discussion.jpg"] { content: url("../../../images/article/article-1/stock/stock-dark-case.jpg"); }
.article-page img[src$="sourcing-review.jpg"] { content: url("../../../images/article/article-1/stock/stock-hand-case.jpg"); }
.article-page img[src$="sports-earbuds.jpg"] { content: url("../../../images/article/article-1/stock/stock-tray.jpg"); }
.article-page img[src$="enc-call-earbuds.jpg"] { content: url("../../../images/article/article-1/stock/stock-wood.jpg"); }
.article-page img[src$="oem-customization.jpg"] { content: url("../../../images/article/article-1/stock/stock-case.jpg"); }
.article-page img[src$="open-ear-source.jpg"] { content: url("../../../images/article/article-1/stock/stock-minimal.jpg"); }
.article-page img[src$="anc-wireless-earbuds-source.jpg"] { content: url("../../../images/article/article-1/stock/stock-phone-case.jpg"); }
.article-page img[src$="quality-control.jpg"] { content: url("../../../images/article/article-1/stock/stock-warm.jpg"); }
.article-section h2, .related-articles h2 { margin-bottom: 20px; font-size: clamp(2.2rem, 4vw, 3.45rem); }
.article-section p { color: var(--color-muted); }
.article-overview { display: grid; grid-template-columns: .87fr 1.13fr; gap: clamp(32px, 6vw, 76px); align-items: center; }
.article-overview figure { height: 370px; margin: 0; overflow: hidden; border-radius: var(--radius-large); box-shadow: var(--shadow); }
.article-overview figure img { height: 100%; object-fit: cover; }
.article-overview ul { display: grid; gap: 9px; margin: 24px 0 0; padding-left: 20px; color: var(--color-text); font-size: .88rem; }
.article-prose { max-width: 790px; margin: 0 auto; }
.article-prose > h2:not(:first-of-type) { margin-top: 66px; }
.article-prose > p, .article-prose li { color: var(--color-muted); font-size: 1rem; }
.article-prose h3 { margin: 34px 0 9px; font-size: 1.22rem; }
.article-prose ol { display: grid; gap: 12px; padding-left: 23px; }
.article-prose li::marker { color: var(--color-primary); font-weight: 800; }
.article-figure { margin: 30px 0; overflow: hidden; border-radius: var(--radius-large); background: #eaf1f4; box-shadow: var(--shadow); }
.article-figure img { width: 100%; max-height: 380px; object-fit: contain; }
.article-figure--wide img { height: 330px; max-height: none; object-fit: cover; }
.article-table { overflow-x: auto; margin: 28px 0 10px; border: 1px solid var(--color-line); border-radius: 14px; }
.article-table table { width: 100%; min-width: 510px; border-collapse: collapse; font-size: .82rem; }
.article-table th, .article-table td { padding: 14px 16px; border-bottom: 1px solid var(--color-line); text-align: left; }
.article-table thead { color: #fff; background: var(--color-primary); }
.article-table tbody th { color: var(--color-text); }
.article-table tbody td { color: var(--color-muted); }
.article-faq { padding: 42px; border-radius: 30px; background: var(--color-soft); }
.article-faq__heading { display: grid; grid-template-columns: 180px 1fr; gap: 30px; align-items: center; }
.article-faq__heading > img { height: 170px; border-radius: var(--radius-medium); object-fit: cover; }
.article-faq__heading p { margin-bottom: 0; }
.faq-list { margin-top: 34px; border-top: 1px solid var(--color-line); }
.faq-list details { border-bottom: 1px solid var(--color-line); }
.faq-list summary { position: relative; padding: 20px 38px 20px 0; color: var(--color-text); cursor: pointer; font-size: .97rem; font-weight: 800; list-style: none; }
.faq-list summary::after { position: absolute; right: 0; content: '+'; color: var(--color-primary); font-size: 1.35rem; font-weight: 400; }
.faq-list details[open] summary::after { content: '−'; }
.faq-list details p { padding-bottom: 19px; margin-bottom: 0; font-size: .9rem; }
.article-summary { display: grid; grid-template-columns: .9fr 1.1fr; overflow: hidden; padding: 0; border-radius: 30px; color: #fff; background: var(--color-primary-dark); }
.article-summary > img { height: 100%; min-height: 360px; object-fit: cover; }
.article-summary > div { padding: clamp(34px, 5vw, 66px); }
.article-summary .eyebrow { color: #d5e6ee; }
.article-summary h2 { margin-bottom: 18px; }
.article-summary p { color: #d5e6ee; }
.article-summary .button { margin-top: 10px; border-color: #fff; color: var(--color-primary); background: #fff; }
.article-inquiry { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(30px, 6vw, 76px); padding: 44px; border-radius: 30px; background: var(--color-soft); }
.article-inquiry > div > img { height: 180px; margin-top: 25px; border-radius: var(--radius-medium); object-fit: cover; }
.article-form { display: grid; gap: 14px; align-content: start; padding: 28px; border-radius: var(--radius-large); background: #fff; box-shadow: var(--shadow); }
.article-form label { display: grid; gap: 6px; font-size: .78rem; font-weight: 800; }
.article-form input, .article-form textarea { width: 100%; padding: 11px 12px; border: 1px solid var(--color-line); border-radius: 10px; color: var(--color-text); resize: vertical; }
.article-form input:focus, .article-form textarea:focus { border-color: var(--color-primary); outline: 3px solid rgba(39, 73, 97, .12); }
.article-footer { display: flex; gap: 15px; align-items: center; padding: 20px 0 34px; border-bottom: 1px solid var(--color-line); }
.article-footer img { width: 68px; height: 68px; border-radius: 50%; object-fit: cover; }
.article-footer p { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; color: var(--color-muted); font-size: .8rem; }
.related-articles { padding-top: 66px; }
.related-articles__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.related-card { display: flex; flex-direction: column; min-height: 350px; overflow: hidden; border-radius: var(--radius-large); background: var(--color-soft); transition: transform .25s ease, box-shadow .25s ease; }
.related-card:hover { box-shadow: var(--shadow); transform: translateY(-5px); }
.related-card img { height: 155px; object-fit: cover; }
.related-card > span, .related-card h3, .related-card p { margin-left: 20px; margin-right: 20px; }
.related-card > span { margin-top: 19px; color: var(--color-primary); font-size: .68rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.related-card h3 { margin-top: 7px; margin-bottom: 9px; font-size: 1.1rem; }
.related-card p { margin-bottom: 20px; color: var(--color-muted); font-size: .8rem; }
@media (max-width: 1040px) { .article-layout { grid-template-columns: 1fr; } .article-toc { display: none; } }
@media (max-width: 800px) { .article-hero__grid, .article-overview, .article-summary, .article-inquiry { grid-template-columns: 1fr; } .article-hero { padding: 48px 0 60px; } .article-overview figure { height: 300px; } .article-summary > img { min-height: 250px; } .article-reading { padding-top: 64px; } }
@media (max-width: 620px) { .breadcrumb { padding: 18px 0; } .article-hero h1 { font-size: clamp(3rem, 14vw, 4.4rem); } .quick-reference { grid-template-columns: 1fr; } .quick-reference > img { height: 165px; } .article-section { padding-bottom: 70px; } .article-faq, .article-inquiry { padding: 22px; border-radius: 22px; } .article-faq__heading { grid-template-columns: 1fr; gap: 22px; } .article-faq__heading > img { height: 210px; } .article-inquiry > div { padding: 18px; } .article-form { padding: 22px; } .related-articles { padding-top: 48px; } .related-articles__grid { grid-template-columns: 1fr; } }