/* ==========================================================================
   Shanghai Better Chemical Co., Ltd. · Chemical export site (English-only)
   Colors: industrial blue primary + amber accent. Breakpoints 1023 / 767.
   ========================================================================== */

:root {
  --brand: #0b5fa5;
  --brand-dark: #084a81;
  --brand-deep: #063560;
  --brand-light: #e8f1f8;
  --accent: #e8912d;
  --ink: #1a2733;
  --ink-soft: #43596c;
  --ink-mute: #8aa0b2;
  --bg: #ffffff;
  --bg-alt: #f4f8fb;
  --border: #dbe5ee;
  --success: #0f8a4d;
  --error: #c62828;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(6, 53, 96, 0.08);
  --shadow-lg: 0 14px 36px rgba(6, 53, 96, 0.16);
  --section-pad: clamp(3.2rem, 7vw, 5.5rem);
  --container: 1140px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--container); margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }

/* ---------- Accessibility ---------- */
.sr-only { position: absolute; width: 1px; height: 1px; clip-path: inset(50%); overflow: hidden; white-space: nowrap; }
.skip-link { position: absolute; top: -100%; left: 1rem; z-index: 200; background: var(--brand); color: #fff; padding: 0.6rem 1rem; border-radius: var(--radius-sm); text-decoration: none; transition: top 0.2s; }
.skip-link:focus { top: 0.6rem; }
:where(a, button, summary, input, textarea):focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; border-radius: 4px; }

/* ---------- 通用组件 ---------- */
.btn { display: inline-block; text-decoration: none; text-align: center; padding: 0.75rem 1.7rem; border-radius: 6px; font-weight: 700; font-size: 1rem; cursor: pointer; border: 1px solid transparent; transition: transform 0.15s, box-shadow 0.15s, background 0.15s, color 0.15s; }
.btn--sm { padding: 0.45rem 1.1rem; font-size: 0.9rem; }
.btn--lg { padding: 0.95rem 2.2rem; font-size: 1.05rem; }
.btn--primary { background: var(--brand); color: #fff; }
.btn--primary:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(11, 95, 165, 0.35); }
.btn--ghost { color: var(--brand); border-color: var(--border); background: #fff; }
.btn--ghost:hover { border-color: var(--brand); background: var(--brand-light); }
.btn--light { background: #fff; color: var(--brand-deep); }
.btn--light:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ---------- Top bar ---------- */
.topbar { background: var(--brand-deep); color: #cfe3f2; font-size: 0.82rem; }
.topbar__inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.4rem 1rem; min-height: 38px; }
.topbar a { color: #fff; text-decoration: none; font-weight: 600; }
.topbar a:hover { text-decoration: underline; }
.topbar__mail { letter-spacing: 0.02em; }

/* ---------- 导航 ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color 0.25s, box-shadow 0.25s; }
.site-header.is-stuck { border-color: var(--border); box-shadow: var(--shadow); }
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 1rem; }
.nav__logo { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; color: var(--ink); }
.nav__logo-mark { width: 44px; height: 44px; flex: none; display: grid; place-items: center; background: var(--brand); color: #fff; font-weight: 800; font-size: 1.05rem; border-radius: 10px; letter-spacing: 0.02em; }
.nav__logo-text { display: flex; flex-direction: column; line-height: 1.3; }
.nav__logo-text strong { font-size: 1.15rem; font-weight: 800; }
.nav__logo-text small { font-size: 0.7rem; color: var(--ink-mute); letter-spacing: 0.08em; text-transform: uppercase; }
.nav__logo-img { height: 52px; width: auto; flex: none; display: block; }
.nav__menu { list-style: none; display: flex; align-items: center; gap: 1.5rem; }
.nav__menu a:not(.btn) { text-decoration: none; color: var(--ink-soft); font-weight: 600; padding: 0.4rem 0.1rem; border-bottom: 2px solid transparent; }
.nav__menu a:not(.btn):hover { color: var(--brand); }
.nav__menu a[aria-current="page"] { color: var(--brand); border-bottom-color: var(--brand); }
.nav__cta-item { margin-left: 0.6rem; }

.nav__toggle { display: none; flex-direction: column; gap: 5px; width: 42px; height: 42px; padding: 10px; background: transparent; border: none; border-radius: var(--radius-sm); cursor: pointer; }
.nav__toggle span { width: 100%; height: 2px; border-radius: 2px; background: var(--ink); transition: transform 0.25s, opacity 0.2s; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero--chem { padding: var(--section-pad) 0; background: linear-gradient(160deg, var(--brand-light) 0%, #fff 60%); border-bottom: 1px solid var(--border); }
.hero__grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero__title { font-size: clamp(1.9rem, 4.6vw, 3.1rem); line-height: 1.2; font-weight: 800; letter-spacing: -0.01em; }
.text-underline { position: relative; color: var(--brand); white-space: nowrap; }
.text-underline::after { content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 10px; background: rgba(232, 145, 45, 0.35); z-index: -1; border-radius: 4px; }
.hero__desc { margin: 1.3rem 0 1.8rem; font-size: 1.1rem; color: var(--ink-soft); max-width: 36em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; }
.hero__meta { list-style: none; display: flex; gap: clamp(1.4rem, 4vw, 2.8rem); margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid var(--border); }
.hero__meta li { display: flex; flex-direction: column; }
.hero__meta strong { font-size: 1.6rem; font-weight: 800; color: var(--brand); }
.hero__meta span { font-size: 0.82rem; color: var(--ink-mute); }

.hero__panel { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-lg); overflow: hidden; }
.hero__panel-tag { background: var(--brand); color: #fff; font-size: 0.82rem; font-weight: 700; padding: 0.5rem 1.2rem; }
.hero__product { display: flex; align-items: center; gap: 0.9rem; padding: 1rem 1.2rem; border-bottom: 1px solid var(--border); }
.hero__product:last-child { border-bottom: none; }
.hero__product-icon { font-size: 1.6rem; }
.hero__product-name { font-weight: 700; font-size: 0.95rem; }
.hero__product-spec { font-size: 0.8rem; color: var(--ink-mute); }

/* ---------- 区块通用 ---------- */
.section { padding: var(--section-pad) 0; }
.section--tight { padding-top: 2rem; }
.section--alt { background: var(--bg-alt); }
.section__head { text-align: center; max-width: 620px; margin: 0 auto clamp(2rem, 5vw, 3.2rem); }
.section__eyebrow { color: var(--brand); font-weight: 800; font-size: 0.82rem; letter-spacing: 0.2em; text-transform: uppercase; }
.section__title { font-size: clamp(1.6rem, 3.8vw, 2.2rem); font-weight: 800; margin: 0.5rem 0 0.7rem; letter-spacing: -0.01em; }
.section__desc { color: var(--ink-soft); }

/* ---------- 品类卡片 ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.2rem; }
.cat-card { display: block; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem 1.2rem; text-decoration: none; color: var(--ink); box-shadow: var(--shadow); transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; }
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--brand); }
.cat-card__icon { font-size: 1.8rem; display: block; margin-bottom: 0.7rem; }
.cat-card h3 { font-size: 1.02rem; margin-bottom: 0.4rem; }
.cat-card p { font-size: 0.85rem; color: var(--ink-soft); }

/* ---------- 认证 ---------- */
.cert-grid { list-style: none; display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; }
.cert-grid li { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1.1rem 0.8rem; text-align: center; box-shadow: var(--shadow); }
.cert-grid strong { display: block; font-size: 1.15rem; font-weight: 800; color: var(--brand); letter-spacing: 0.03em; }
.cert-grid span { font-size: 0.78rem; color: var(--ink-mute); }

/* ---------- 优势 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.4rem; }
.why-card { background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--brand); border-radius: var(--radius-sm); padding: 1.6rem; box-shadow: var(--shadow); }
.why-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.why-card p { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- 市场覆盖 ---------- */
.markets__grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.markets__desc { color: var(--ink-soft); margin: 1rem 0 1.6rem; }
.market-tags { list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }
.market-tags li { background: #fff; border: 1px solid var(--border); border-radius: 999px; padding: 0.55rem 1.1rem; text-align: center; font-weight: 600; font-size: 0.9rem; color: var(--ink-soft); box-shadow: var(--shadow); }

/* ---------- CTA ---------- */
.cta--chem { background: linear-gradient(120deg, var(--brand-deep), var(--brand)); color: #fff; text-align: center; padding: var(--section-pad) 0; }
.cta__title { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 800; }
.cta__desc { margin: 0.9rem 0 1.8rem; color: rgba(255, 255, 255, 0.85); }

/* ---------- 页头（内页） ---------- */
.page-head { background: linear-gradient(120deg, var(--brand-deep), var(--brand)); color: #fff; padding: 2.6rem 0; text-align: center; }
.page-head__title { font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 800; }
.page-head__crumbs { margin-top: 0.6rem; font-size: 0.85rem; color: rgba(255, 255, 255, 0.8); }
.page-head__crumbs a { color: #fff; text-decoration: none; border-bottom: 1px dotted rgba(255, 255, 255, 0.6); }
.page-head__crumbs a:hover { border-bottom-style: solid; }

/* ---------- 产品筛选、搜索与卡片 ---------- */
.catalog-tools { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.9rem; margin-bottom: 1.4rem; }
.catalog-tools .filter-bar { margin-bottom: 0; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1.4rem; }
.filter-btn { padding: 0.5rem 1.2rem; border-radius: 999px; border: 1px solid var(--border); background: #fff; font: inherit; font-weight: 600; font-size: 0.92rem; color: var(--ink-soft); cursor: pointer; transition: background 0.15s, color 0.15s, border-color 0.15s; }
.filter-btn:hover { border-color: var(--brand); color: var(--brand); }
.filter-btn.is-active { background: var(--brand); border-color: var(--brand); color: #fff; }
.filter-result { font-size: 0.85rem; color: var(--ink-mute); margin-bottom: 1.2rem; }

.search-box { position: relative; flex: 1 1 240px; max-width: 360px; }
.search-box__icon { position: absolute; left: 0.95rem; top: 50%; transform: translateY(-50%); color: var(--ink-mute); pointer-events: none; }
.search-box__input { width: 100%; padding: 0.52rem 2.4rem; border-radius: 999px; border: 1px solid var(--border); background: #fff; font: inherit; font-size: 0.92rem; color: var(--ink); transition: border-color 0.15s, box-shadow 0.15s; }
.search-box__input::placeholder { color: var(--ink-mute); }
.search-box__input:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(11, 95, 165, 0.14); }
.search-box__input::-webkit-search-cancel-button { display: none; }
.search-box__clear { position: absolute; right: 0.5rem; top: 50%; transform: translateY(-50%); width: 1.55rem; height: 1.55rem; border: none; border-radius: 50%; background: var(--ink-mute); color: #fff; font: inherit; font-size: 0.95rem; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.search-box__clear:hover { background: var(--brand); }

.no-result { display: none; padding: 1.6rem 1.4rem; margin-bottom: 1.4rem; border: 1px dashed var(--border); border-radius: var(--radius); background: rgba(11, 95, 165, 0.04); font-size: 0.95rem; color: var(--ink-soft); }
.no-result[hidden] { display: none; }
.no-result.is-visible { display: block; }
.no-result a { color: var(--brand); font-weight: 600; }

.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.prod-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.4rem; box-shadow: var(--shadow); transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; }
.prod-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--brand); }
.prod-card.is-hidden { display: none; }
.prod-card__head { display: flex; align-items: center; gap: 0.7rem; padding-bottom: 0.9rem; border-bottom: 1px solid var(--border); }
.prod-card__head span { font-size: 1.4rem; }
.prod-card__head h3 { font-size: 1.02rem; font-weight: 800; }
.prod-card__specs { display: grid; gap: 0.45rem; margin: 1rem 0 1.2rem; }
.prod-card__specs div { display: flex; justify-content: space-between; gap: 1rem; font-size: 0.88rem; }
.prod-card__specs dt { color: var(--ink-mute); flex: none; }
.prod-card__specs dd { color: var(--ink); font-weight: 600; text-align: right; }
.prod-card__inquiry { display: inline-block; font-size: 0.9rem; font-weight: 700; color: var(--brand); text-decoration: none; border-bottom: 2px solid rgba(11, 95, 165, 0.3); }
.prod-card__inquiry:hover { border-bottom-color: var(--brand); }
.prod-note { margin-top: 2.2rem; text-align: center; color: var(--ink-soft); font-size: 0.92rem; }
.prod-note a { color: var(--brand); font-weight: 700; text-decoration: none; border-bottom: 2px solid rgba(11, 95, 165, 0.3); }
.prod-note a:hover { border-bottom-color: var(--brand); }

/* ---------- 关于页 ---------- */
.about__grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.about__copy p { color: var(--ink-soft); margin-bottom: 1rem; }
.about__copy .about__placeholder { font-size: 0.82rem; color: var(--ink-mute); background: #fff8ec; border: 1px dashed var(--accent); border-radius: var(--radius-sm); padding: 0.7rem 1rem; }
.about__stats ul { list-style: none; display: grid; gap: 1rem; }
.about__stats li { background: #fff; border: 1px solid var(--border); border-left: 4px solid var(--brand); border-radius: var(--radius-sm); padding: 1.2rem 1.4rem; box-shadow: var(--shadow); }
.about__stats strong { font-size: 1.7rem; font-weight: 800; color: var(--brand); }
.about__stats span { display: block; font-size: 0.85rem; color: var(--ink-mute); }

.timeline { list-style: none; position: relative; max-width: 680px; margin: 0 auto; padding-left: 1.8rem; }
.timeline::before { content: ""; position: absolute; left: 0.45rem; top: 8px; bottom: 8px; width: 3px; border-radius: 3px; background: var(--border); }
.timeline li { position: relative; padding: 0 0 1.6rem 1.6rem; }
.timeline li::before { content: ""; position: absolute; left: -1.8rem; top: 8px; width: 15px; height: 15px; border-radius: 50%; background: var(--brand); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--brand); margin-left: 0.45rem; }
.timeline strong { color: var(--brand); font-weight: 800; font-size: 1.1rem; }
.timeline p { color: var(--ink-soft); font-size: 0.95rem; margin-top: 0.2rem; }

/* ---------- Contact page ---------- */
.contact__grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: clamp(1.6rem, 4vw, 3rem); align-items: start; }
.contact-info a { color: #fff; }
.inquiry__title { font-size: clamp(1.4rem, 3vw, 1.8rem); font-weight: 800; }
.inquiry__desc { color: var(--ink-soft); margin: 0.6rem 0 1.6rem; font-size: 0.95rem; }
.inquiry__form { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(1.4rem, 3vw, 2rem); box-shadow: var(--shadow); display: grid; gap: 1.1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-field { display: grid; gap: 0.35rem; }
.form-field label { font-size: 0.85rem; font-weight: 700; color: var(--ink-soft); }
.form-field input, .form-field textarea { padding: 0.7rem 0.9rem; border: 1px solid var(--border); border-radius: var(--radius-sm); font: inherit; font-size: 0.95rem; background: var(--bg-alt); transition: border-color 0.15s, background 0.15s; }
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--brand); background: #fff; }
.form-field input[aria-invalid="true"], .form-field textarea[aria-invalid="true"] { border-color: var(--error); background: #fdf3f3; }
.form-msg { font-size: 0.9rem; font-weight: 700; min-height: 1.4em; }
.form-msg--ok { color: var(--success); }
.form-msg--err { color: var(--error); }
.form-hint { font-size: 0.78rem; color: var(--ink-mute); background: var(--bg-alt); border-radius: var(--radius-sm); padding: 0.6rem 0.9rem; }

.contact-info { background: var(--brand-deep); color: #d9e8f4; border-radius: var(--radius); padding: clamp(1.4rem, 3vw, 2rem); }
.contact-info h2 { color: #fff; font-size: 1.25rem; margin-bottom: 1.2rem; }
.contact-info__list { list-style: none; display: grid; gap: 1.1rem; }
.contact-info__list li { display: flex; gap: 0.8rem; }
.contact-info__list span { font-size: 1.2rem; flex: none; }
.contact-info__list strong { color: #fff; display: block; font-size: 0.9rem; }
.contact-info__list p { font-size: 0.88rem; }
.trade-terms { margin-top: 1.6rem; padding-top: 1.2rem; border-top: 1px solid rgba(255, 255, 255, 0.2); }
.trade-terms h3 { color: #fff; font-size: 1rem; margin-bottom: 0.4rem; }
.trade-terms p { font-size: 0.85rem; }

/* ---------- 页脚 ---------- */
.site-footer { background: #0d1b28; color: #a9bccb; padding: 3.2rem 0 1.4rem; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1.4fr; gap: 2rem; }
.footer__logo { color: #fff; font-weight: 800; font-size: 1.15rem; }
.footer__logo-img { height: 64px; width: auto; display: block; margin-bottom: 0.7rem; }
.footer__tagline { margin-top: 0.5rem; font-size: 0.85rem; color: var(--ink-mute); max-width: 26em; }
.footer__col h4 { color: #fff; font-size: 0.92rem; margin-bottom: 0.8rem; }
.footer__col ul { list-style: none; display: grid; gap: 0.55rem; }
.footer__col a { color: #a9bccb; text-decoration: none; font-size: 0.88rem; }
.footer__col a:hover { color: #fff; }
.footer__plain li { font-size: 0.88rem; }
.footer__bottom { margin-top: 2.2rem; padding-top: 1.3rem; border-top: 1px solid #1c3040; font-size: 0.78rem; color: var(--ink-mute); }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .cat-card, .prod-card { transition: none; }
}

/* ==========================================================================
   响应式：平板 <= 1023px
   ========================================================================== */
@media (max-width: 1023px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { max-width: 480px; margin-inline: auto; width: 100%; }

  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }

  .markets__grid { grid-template-columns: 1fr; }
  .about__grid { grid-template-columns: 1fr; }
  .about__stats ul { display: grid; grid-template-columns: repeat(2, 1fr); }

  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .contact__grid { grid-template-columns: 1fr; }

  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

/* ==========================================================================
   响应式：移动端 <= 767px
   ========================================================================== */
@media (max-width: 767px) {
  .topbar__note { font-size: 0.72rem; }

  .nav__toggle { display: flex; }
  .nav__menu { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); padding: 0.4rem 1.2rem 1.1rem; display: none; }
  .nav__menu.is-open { display: flex; }
  .nav__menu li { padding: 0.25rem 0; }
  .nav__menu a:not(.btn) { display: block; padding: 0.6rem 0.3rem; font-size: 1.02rem; }
  .nav__cta-item { margin: 0.5rem 0 0.2rem; }
  .nav__cta-item .btn { width: 100%; }

  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .market-tags { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: 1fr; }

  .hero__meta { flex-wrap: wrap; gap: 1rem 1.8rem; }
  .hero__actions .btn { flex: 1 1 auto; }

  .form-row { grid-template-columns: 1fr; }
  .about__stats ul { grid-template-columns: 1fr; }

  .footer__grid { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* ---------- Product detail pages ---------- */
.prod-card__link { color: inherit; text-decoration: none; }
.prod-card__link:hover { color: var(--brand); }
.prod-detail__intro { font-size: 1.05rem; line-height: 1.75; max-width: 860px; }
.prod-detail__specs { max-width: 640px; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.4rem; margin: 1.8rem 0; background: #fff; }
.prod-detail__para { color: var(--ink-soft); line-height: 1.75; max-width: 860px; }
.prod-detail__actions { display: flex; gap: 1rem; flex-wrap: wrap; margin: 1.8rem 0 2.4rem; }

/* ---------- Insights ---------- */
.insights-intro { color: rgba(255, 255, 255, 0.94); line-height: 1.7; max-width: 760px; margin: 1rem auto 0; }
.insight-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.4rem; }
.insight-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; display: flex; flex-direction: column; gap: .6rem; transition: border-color .2s ease, box-shadow .2s ease; }
.insight-card:hover { border-color: var(--brand); box-shadow: 0 6px 24px rgba(11, 95, 165, .08); }
.insight-card h3 { font-size: 1.05rem; line-height: 1.45; margin: 0; }
.insight-card h3 a { color: var(--ink); text-decoration: none; }
.insight-card h3 a:hover { color: var(--brand); }
.insight-card p { color: var(--ink-soft); font-size: .92rem; line-height: 1.65; margin: 0; }
.insight-card__meta { display: flex; align-items: center; gap: .7rem; font-size: .8rem; color: var(--ink-mute); margin: 0; }
.insight-card__tag { background: var(--brand-light); color: var(--brand-dark); font-weight: 600; padding: .18rem .6rem; border-radius: 999px; font-size: .74rem; letter-spacing: .02em; }
.insight-card__more { color: var(--brand); text-decoration: none; font-weight: 600; font-size: .9rem; margin-top: auto; }
.insight-card__more:hover { text-decoration: underline; }
.article-wrap { max-width: 820px; }
.article-meta { display: flex; align-items: center; gap: .7rem; font-size: .85rem; color: var(--ink-mute); margin: 0 0 1.5rem; }
.article-body { font-size: 1.02rem; line-height: 1.8; color: var(--ink); }
.article-body h2 { font-size: 1.3rem; margin: 2.2rem 0 .8rem; color: var(--brand-deep); }
.article-body p { margin: 0 0 1.1rem; color: var(--ink-soft); }
.article-body ul { margin: 0 0 1.2rem 1.2rem; color: var(--ink-soft); }
.article-body li { margin-bottom: .5rem; line-height: 1.7; }
.article-body a { color: var(--brand); text-decoration: underline; text-underline-offset: 2px; }
.article-body a:hover { color: var(--brand-dark); }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.4rem 0; font-size: .95rem; background: #fff; }
.article-body th { background: var(--brand-light); color: var(--brand-deep); text-align: left; padding: .6rem .8rem; border: 1px solid var(--border); font-weight: 600; }
.article-body td { padding: .6rem .8rem; border: 1px solid var(--border); color: var(--ink-soft); vertical-align: top; }
.article-cta { margin-top: 2.4rem; background: var(--brand-light); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.6rem 1.8rem; }
.article-cta h3 { margin: 0 0 .6rem; color: var(--brand-deep); }
.article-cta p { color: var(--ink-soft); line-height: 1.7; margin: 0 0 1rem; }
.insight-grid--page { margin-top: .5rem; }

/* ---------- Language switch ---------- */
.nav__lang a { font-weight: 700; letter-spacing: .02em; }