/* ============================================================
   m2 · 现代 B2B 供应商目录(对标中国制造网 MIC)
   密集产品网格 · 醒目询价 · 系统中文字体
   primary #1f3a5f · accent #ff7a18 · neutral #f2f2f0
   ============================================================ */

:root {
    --m2-ink: #1f3a5f;
    --m2-ink-2: #2c456b;
    --m2-accent: #ff7a18;
    --m2-accent-dk: #e0660a;
    --m2-neutral: #f2f2f0;
    --m2-paper: #ffffff;
    --m2-line: #d9d9d4;
    --m2-line-dk: #1f3a5f;
    --m2-muted: #6b6b66;
    --m2-muted-2: #8b8b85;
    --m2-on-dark: #f2f2f0;
    --m2-on-dark-mut: #9a9a93;
    --zcfab-accent: #ff7a18;

    --m2-shell: 1240px;
    --m2-gap: 24px;

    --m2-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
    --m2-head: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;

    --m2-radius: 2px;
}

/* ---------- reset / base ---------- */
* { box-sizing: border-box; }

.m2-body {
    margin: 0;
    font-family: var(--m2-sans);
    font-size: 15px;
    line-height: 1.6;
    color: var(--m2-ink);
    background: var(--m2-paper);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.m2-body img { max-width: 100%; display: block; }
.m2-body a { color: inherit; text-decoration: none; }

.seo-h1 {
    position: absolute;
    width: 1px; height: 1px;
    overflow: hidden; clip: rect(0 0 0 0);
    white-space: nowrap;
}

.m2-shell {
    max-width: var(--m2-shell);
    margin: 0 auto;
    padding: 0 24px;
}
.m2-shell-narrow { max-width: 820px; }

.m2-main { display: block; }

/* ---------- shared type ---------- */
.m2-kicker {
    display: inline-block;
    font-family: var(--m2-sans);
    font-weight: 800;
    font-size: 11px;
    letter-spacing: .22em;
    text-transform: none;
    color: var(--m2-accent);
    margin-bottom: 14px;
    position: relative;
    padding-left: 26px;
}
.m2-kicker::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    width: 18px; height: 2px;
    background: var(--m2-accent);
    transform: translateY(-50%);
}
.m2-kicker-light { color: #fff; }
.m2-kicker-light::before { background: #fff; }

.m2-display {
    font-family: var(--m2-head);
    font-weight: 400;
    font-size: clamp(32px, 5vw, 56px);
    line-height: .98;
    letter-spacing: -.01em;
    margin: 0 0 18px;
    text-transform: none;
    color: var(--m2-ink);
    word-break: break-word;
}
.m2-display-md { font-size: clamp(24px, 3.4vw, 36px); }

.m2-lead {
    font-size: 17px;
    line-height: 1.7;
    color: var(--m2-ink-2);
    max-width: 60ch;
    margin: 0;
}

.m2-link-quiet {
    color: var(--m2-accent);
    font-weight: 700;
    border-bottom: 1px solid currentColor;
    padding-bottom: 1px;
}
.m2-link-quiet:hover { color: var(--m2-accent-dk); }

.m2-footnote {
    font-size: 12px;
    color: var(--m2-muted);
    line-height: 1.6;
    margin: 14px 0 0;
}

/* ---------- buttons ---------- */
.m2-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--m2-sans);
    font-weight: 700;
    font-size: 13px;
    letter-spacing: .04em;
    text-transform: none;
    padding: 13px 22px;
    border: 2px solid var(--m2-ink);
    border-radius: var(--m2-radius);
    cursor: pointer;
    transition: all .16s ease;
    white-space: nowrap;
}
.m2-btn-primary { background: var(--m2-ink); color: #fff; }
.m2-btn-primary:hover { background: var(--m2-accent); border-color: var(--m2-accent); }
.m2-btn-accent { background: var(--m2-accent); color: #fff; border-color: var(--m2-accent); }
.m2-btn-accent:hover { background: var(--m2-accent-dk); border-color: var(--m2-accent-dk); }
.m2-btn-ghost { background: transparent; color: var(--m2-ink); }
.m2-btn-ghost:hover { background: var(--m2-ink); color: #fff; }
.m2-btn-line { background: transparent; color: var(--m2-ink); border-color: var(--m2-line); }
.m2-btn-line:hover { border-color: var(--m2-ink); }
.m2-btn-ghost-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.m2-btn-ghost-light:hover { background: #fff; color: var(--m2-ink); border-color: #fff; }
.m2-btn-block { width: 100%; }

.m2-cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.m2-cta-center { justify-content: center; }

/* ---------- badges ---------- */
.m2-badge {
    display: inline-flex;
    align-items: center;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .04em;
    padding: 3px 9px;
    border: 1px solid var(--m2-line);
    border-radius: var(--m2-radius);
    color: var(--m2-ink-2);
    background: var(--m2-paper);
}
.m2-badge-verified {
    background: var(--m2-accent);
    color: #fff;
    border-color: var(--m2-accent);
}

/* ============================================================
   HEADER
   ============================================================ */
.m2-mast { background: var(--m2-paper); border-bottom: 3px solid var(--m2-ink); }

.m2-topbar {
    background: var(--m2-ink);
    color: var(--m2-on-dark);
    font-size: 12px;
}
.m2-topbar-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px 16px;
    padding: 9px 0;
}
.m2-topbar-trust { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.m2-topbar-dot { color: var(--m2-on-dark-mut); margin: 0 2px; }
.m2-topbar-links a { color: var(--m2-on-dark-mut); }
.m2-topbar-links a:hover { color: #fff; }
.m2-topbar .m2-badge { font-size: 11px; padding: 2px 8px; }

.m2-mast-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 22px 0;
}
.m2-brand { display: flex; align-items: center; gap: 16px; min-width: 0; }
.m2-brand-logo {
    width: 56px; height: 56px;
    flex: 0 0 56px;
    border: 2px solid var(--m2-ink);
    border-radius: var(--m2-radius);
    overflow: hidden;
    background: #fff;
    display: flex; align-items: center; justify-content: center;
}
.m2-brand-logo img { width: 100%; height: 100%; object-fit: contain; }
.m2-brand-text { display: flex; flex-direction: column; min-width: 0; }
.m2-brand-name {
    font-family: var(--m2-head);
    font-size: 22px;
    line-height: 1.05;
    text-transform: none;
    letter-spacing: -.01em;
    color: var(--m2-ink);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 46ch;
}
.m2-brand-sub {
    font-size: 12.5px;
    color: var(--m2-muted);
    letter-spacing: .02em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.m2-mast-actions { display: flex; align-items: center; gap: 18px; flex: 0 0 auto; }
.m2-mast-tel { text-align: right; line-height: 1.2; }
.m2-mast-tel-label {
    display: block;
    font-size: 11px;
    letter-spacing: .12em;
    text-transform: none;
    color: var(--m2-muted);
    font-weight: 700;
}
.m2-mast-tel strong {
    font-family: var(--m2-head);
    font-size: 21px;
    color: var(--m2-accent);
    letter-spacing: -.01em;
}

.m2-nav { border-top: 1px solid var(--m2-line); }
.m2-nav-list {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0; padding: 0;
}
.m2-nav-list > li { position: relative; }
.m2-nav-list a {
    display: block;
    padding: 15px 22px;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: .04em;
    color: var(--m2-ink);
    border-bottom: 3px solid transparent;
    margin-bottom: -1px;
    transition: color .15s, border-color .15s;
}
.m2-nav-list a:hover { color: var(--m2-accent); }
.m2-nav-list a.is-active { border-bottom-color: var(--m2-accent); color: var(--m2-accent); }
.m2-nav-list > li:first-child a { padding-left: 0; }

/* ============================================================
   SECTIONS
   ============================================================ */
.m2-section { padding: 36px 0; }
.m2-section-alt { background: var(--m2-neutral); }
.m2-section-inner { margin-top: 26px; padding-top: 24px; border-top: 1px solid var(--m2-line); }

.m2-section-h { margin-bottom: 22px; }
.m2-section-h-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.m2-section-h .m2-display,
.m2-section-h .m2-display-md { margin-bottom: 0; }
.m2-section-h .m2-kicker { margin-bottom: 10px; }

.m2-more {
    font-weight: 700;
    font-size: 13px;
    letter-spacing: .04em;
    text-transform: none;
    color: var(--m2-accent);
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    padding-bottom: 2px;
}
.m2-more:hover { border-bottom-color: var(--m2-accent); }
.m2-more-static {
    color: var(--m2-muted);
    font-size: 13px;
    margin: 0;
}

/* ---------- trust bar ---------- */
.m2-trustbar { background: var(--m2-ink); color: var(--m2-on-dark); }
.m2-trust-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    list-style: none;
    margin: 0; padding: 0;
}
.m2-trust-list li {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 16px 4px;
    border-left: 1px solid rgba(255,255,255,.14);
}
.m2-trust-list li:first-child { border-left: 0; }
.m2-trust-k {
    font-size: 11px;
    letter-spacing: .14em;
    text-transform: none;
    color: var(--m2-accent);
    font-weight: 800;
}
.m2-trust-v { font-weight: 700; font-size: 14px; }

/* ---------- hero ---------- */
.m2-hero { padding: 40px 0 36px; border-bottom: 1px solid var(--m2-line); }
.m2-hero-grid {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 48px;
    align-items: center;
}
.m2-hero-text { min-width: 0; }
.m2-hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin: 34px 0 0;
    border-top: 2px solid var(--m2-ink);
}
.m2-hero-stats > div {
    padding: 16px 14px 0 0;
    border-right: 1px solid var(--m2-line);
}
.m2-hero-stats > div:last-child { border-right: 0; }
.m2-hero-stats dt {
    font-size: 11px;
    letter-spacing: .1em;
    text-transform: none;
    color: var(--m2-muted);
    font-weight: 700;
    margin-bottom: 4px;
}
.m2-hero-stats dd {
    margin: 0;
    font-family: var(--m2-head);
    font-size: 18px;
    color: var(--m2-ink);
}
.m2-hero-figure {
    margin: 0;
    border: 2px solid var(--m2-ink);
    border-radius: var(--m2-radius);
    overflow: hidden;
    background: var(--m2-neutral);
}
.m2-hero-figure img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.m2-hero-figure figcaption {
    padding: 11px 16px;
    font-size: 12px;
    letter-spacing: .04em;
    color: var(--m2-on-dark);
    background: var(--m2-ink);
}

/* ---------- category grid ---------- */
.m2-cat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    border-top: 1px solid var(--m2-line);
    border-left: 1px solid var(--m2-line);
}
.m2-cat {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 22px 20px;
    border-right: 1px solid var(--m2-line);
    border-bottom: 1px solid var(--m2-line);
    transition: background .15s, color .15s;
}
.m2-cat:hover { background: var(--m2-ink); color: #fff; }
.m2-cat-num {
    font-family: var(--m2-head);
    font-size: 20px;
    color: var(--m2-accent);
    line-height: 1;
}
.m2-cat:hover .m2-cat-num { color: #fff; }
.m2-cat-name { font-weight: 700; font-size: 15px; }

/* ============================================================
   PRODUCT GRID / CARDS
   ============================================================ */
.m2-prod-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}
.m2-card {
    display: flex;
    flex-direction: column;
    background: var(--m2-paper);
    border: 1px solid var(--m2-line);
    border-radius: var(--m2-radius);
    overflow: hidden;
    transition: border-color .15s, box-shadow .15s, transform .15s;
}
.m2-card:hover {
    border-color: var(--m2-ink);
    box-shadow: 6px 6px 0 var(--m2-ink);
    transform: translate(-2px, -2px);
}
.m2-card-fig {
    position: relative;
    margin: 0;
    background: var(--m2-neutral);
    border-bottom: 1px solid var(--m2-line);
}
.m2-card-fig img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.m2-card-tag {
    position: absolute;
    top: 0; left: 0;
    background: var(--m2-accent);
    color: #fff;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .08em;
    padding: 4px 10px;
}
.m2-card-body { padding: 12px 12px 13px; display: flex; flex-direction: column; flex: 1; }
.m2-card-title {
    font-family: var(--m2-sans);
    font-weight: 700;
    font-size: 14px;
    line-height: 1.4;
    margin: 0 0 10px;
    color: var(--m2-ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.8em;
}
.m2-card-spec {
    margin: 0 0 14px;
    display: flex;
    flex-direction: column;
    gap: 3px;
    font-size: 12.5px;
}
.m2-card-spec > div { display: flex; gap: 8px; }
.m2-card-spec dt {
    color: var(--m2-muted);
    flex: 0 0 34px;
    font-weight: 600;
}
.m2-card-spec dd {
    margin: 0;
    color: var(--m2-ink-2);
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.m2-card-foot {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid var(--m2-line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.m2-card-price {
    font-family: var(--m2-head);
    font-size: 18px;
    font-weight: 800;
    color: var(--m2-accent);
    line-height: 1;
}
.m2-card-price small { font-family: var(--m2-sans); font-size: 11px; color: var(--m2-muted); font-weight: 600; }
.m2-card-price em { font-style: normal; font-family: var(--m2-sans); font-size: 14px; color: var(--m2-ink-2); font-weight: 700; }
.m2-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    flex: 0 0 auto;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .04em;
    text-transform: none;
    color: #fff;
    background: var(--m2-accent);
    border-radius: var(--m2-radius);
    padding: 7px 13px;
    transition: background .15s;
}
.m2-card:hover .m2-card-cta { background: var(--m2-accent-dk); color: #fff; }

/* ============================================================
   SUPPLY (list + sidebar)
   ============================================================ */
.m2-layout {
    display: grid;
    grid-template-columns: 264px 1fr;
    gap: 32px;
    align-items: start;
}
.m2-side { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 16px; }
.m2-side-card {
    border: 1px solid var(--m2-line);
    border-top: 3px solid var(--m2-ink);
    border-radius: var(--m2-radius);
    padding: 20px;
    background: var(--m2-paper);
}
.m2-side-card-cta { background: var(--m2-neutral); }
.m2-side-h {
    display: block;
    font-family: var(--m2-head);
    font-size: 15px;
    text-transform: none;
    letter-spacing: .02em;
    margin: 0 0 14px;
    color: var(--m2-ink);
}
.m2-side-list { list-style: none; margin: 0; padding: 0; }
.m2-side-list li { border-top: 1px solid var(--m2-line); }
.m2-side-list li:first-child { border-top: 0; }
.m2-side-list a {
    display: block;
    padding: 10px 0 10px 16px;
    font-weight: 600;
    font-size: 14px;
    color: var(--m2-ink-2);
    position: relative;
    transition: color .15s, padding .15s;
}
.m2-side-list a::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    width: 6px; height: 6px;
    background: var(--m2-line);
    transform: translateY(-50%);
}
.m2-side-list a:hover { color: var(--m2-accent); padding-left: 20px; }
.m2-side-list a.is-active { color: var(--m2-accent); font-weight: 800; }
.m2-side-list a.is-active::before { background: var(--m2-accent); }
.m2-side-tel {
    font-family: var(--m2-head);
    font-size: 22px;
    color: var(--m2-accent);
    margin: 0 0 10px;
}
.m2-side-note { font-size: 13px; color: var(--m2-muted); margin: 0 0 16px; line-height: 1.6; }

.m2-main-col { min-width: 0; }
.m2-main-col .m2-prod-grid { grid-template-columns: repeat(3, 1fr); }

.m2-empty {
    border: 1px dashed var(--m2-line);
    padding: 50px 20px;
    text-align: center;
    color: var(--m2-muted);
}
.m2-empty-inline { color: var(--m2-muted); }

/* pager */
.m2-pager { margin-top: 34px; }
.m2-pager ul, .m2-pager .pagination {
    display: flex; flex-wrap: wrap; gap: 6px;
    list-style: none; margin: 0; padding: 0;
    justify-content: center;
}
.m2-pager li a, .m2-pager li span {
    display: inline-flex;
    min-width: 40px; height: 40px;
    align-items: center; justify-content: center;
    padding: 0 12px;
    border: 1px solid var(--m2-line);
    font-weight: 700;
    color: var(--m2-ink);
    border-radius: var(--m2-radius);
}
.m2-pager li a:hover { border-color: var(--m2-ink); background: var(--m2-ink); color: #fff; }
.m2-pager li.active span, .m2-pager li.current span {
    background: var(--m2-accent); color: #fff; border-color: var(--m2-accent);
}

/* ============================================================
   PRODUCT DETAIL
   ============================================================ */
.m2-crumb { border-bottom: 1px solid var(--m2-line); background: var(--m2-paper); }
.m2-crumb-row {
    display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
    padding: 14px 0;
    font-size: 13px;
    color: var(--m2-muted);
}
.m2-crumb-row a { color: var(--m2-ink-2); font-weight: 600; }
.m2-crumb-row a:hover { color: var(--m2-accent); }
.m2-crumb-row .sep { color: var(--m2-line); }

.m2-prod-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}
.m2-prod-detail-img {
    margin: 0;
    border: 2px solid var(--m2-ink);
    border-radius: var(--m2-radius);
    overflow: hidden;
    background: var(--m2-neutral);
}
.m2-prod-detail-img img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.m2-prod-detail-info { min-width: 0; }
.m2-prod-title {
    font-family: var(--m2-head);
    font-size: clamp(22px, 2.6vw, 30px);
    line-height: 1.15;
    margin: 0 0 20px;
    color: var(--m2-ink);
}
.m2-prod-price-box {
    background: var(--m2-ink);
    color: #fff;
    padding: 18px 22px;
    border-radius: var(--m2-radius);
    margin-bottom: 22px;
}
.m2-prod-price-label {
    font-size: 11px;
    letter-spacing: .14em;
    text-transform: none;
    color: var(--m2-on-dark-mut);
    font-weight: 700;
}
.m2-prod-price {
    font-family: var(--m2-head);
    font-size: 34px;
    margin: 6px 0 0;
    color: #fff;
    line-height: 1;
}
.m2-prod-price small { font-family: var(--m2-sans); font-size: 15px; color: var(--m2-on-dark-mut); font-weight: 600; }
.m2-prod-price em { font-style: normal; font-size: 24px; }

.m2-spec-table {
    width: 100%;
    border-collapse: collapse;
    border-top: 2px solid var(--m2-ink);
    margin-bottom: 6px;
    font-size: 14px;
}
.m2-spec-table th, .m2-spec-table td {
    text-align: left;
    padding: 11px 12px;
    border-bottom: 1px solid var(--m2-line);
    vertical-align: top;
}
.m2-spec-table th {
    width: 38%;
    font-weight: 700;
    color: var(--m2-muted);
    background: var(--m2-neutral);
    letter-spacing: .02em;
}
.m2-spec-table td { color: var(--m2-ink); font-weight: 600; }

/* supplier card */
.m2-supplier-card {
    margin-top: 40px;
    border: 1px solid var(--m2-line);
    border-top: 3px solid var(--m2-accent);
    border-radius: var(--m2-radius);
    padding: 24px;
    background: var(--m2-neutral);
}
.m2-supplier-head { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.m2-supplier-logo {
    width: 60px; height: 60px;
    flex: 0 0 60px;
    border: 2px solid var(--m2-ink);
    border-radius: var(--m2-radius);
    overflow: hidden; background: #fff;
    display: flex; align-items: center; justify-content: center;
}
.m2-supplier-logo img { width: 100%; height: 100%; object-fit: contain; }
.m2-supplier-name {
    display: block;
    font-family: var(--m2-head);
    font-size: 19px;
    color: var(--m2-ink);
    margin-bottom: 8px;
}
.m2-supplier-name:hover { color: var(--m2-accent); }
.m2-supplier-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.m2-supplier-meta {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    margin: 0;
    border-top: 1px solid var(--m2-line);
}
.m2-supplier-meta > div {
    display: flex; gap: 10px;
    padding: 11px 16px 11px 0;
    border-bottom: 1px solid var(--m2-line);
    font-size: 13.5px;
}
.m2-supplier-meta dt {
    flex: 0 0 56px;
    color: var(--m2-muted);
    font-weight: 700;
}
.m2-supplier-meta dd { margin: 0; color: var(--m2-ink-2); font-weight: 600; }

/* ============================================================
   EDITORIAL / ABOUT / FACTS
   ============================================================ */
.m2-editorial {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    align-items: start;
}
.m2-editorial-aside {
    border-top: 2px solid var(--m2-ink);
    padding-top: 18px;
}
.m2-editorial-aside .m2-side-h { margin-bottom: 12px; }
.m2-meta-dl { margin: 0; }
.m2-meta-dl dt {
    font-size: 11px;
    letter-spacing: .1em;
    text-transform: none;
    color: var(--m2-muted);
    font-weight: 700;
    margin-top: 14px;
}
.m2-meta-dl dt:first-child { margin-top: 0; }
.m2-meta-dl dd {
    margin: 3px 0 0;
    font-weight: 700;
    font-size: 15px;
    color: var(--m2-ink);
}

.m2-prose { font-size: 15.5px; line-height: 1.8; color: var(--m2-ink-2); }
.m2-prose p { margin: 0 0 1.1em; }
.m2-prose img { border-radius: var(--m2-radius); margin: 1em 0; }
.m2-prose h1, .m2-prose h2, .m2-prose h3 {
    font-family: var(--m2-head);
    color: var(--m2-ink);
    margin: 1.4em 0 .5em;
    line-height: 1.2;
}
.m2-prose a { color: var(--m2-accent); border-bottom: 1px solid currentColor; }
.m2-prose table { width: 100%; border-collapse: collapse; }
.m2-prose th, .m2-prose td { border: 1px solid var(--m2-line); padding: 8px 10px; }
.m2-editorial-body { min-width: 0; }

.m2-fact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin-top: 40px;
    border-top: 2px solid var(--m2-ink);
    border-left: 1px solid var(--m2-line);
}
.m2-fact-grid-4 { grid-template-columns: repeat(4, 1fr); margin-top: 0; }
.m2-fact {
    padding: 22px 22px;
    border-right: 1px solid var(--m2-line);
    border-bottom: 1px solid var(--m2-line);
}
.m2-fact-label {
    display: block;
    font-size: 11px;
    letter-spacing: .12em;
    text-transform: none;
    color: var(--m2-accent);
    font-weight: 800;
    margin-bottom: 10px;
}
.m2-fact-value {
    font-family: var(--m2-head);
    font-size: 26px;
    color: var(--m2-ink);
    margin: 0;
    line-height: 1.1;
}
.m2-fact-value-sm { font-size: 18px; }
.m2-fact-sub { font-size: 12.5px; color: var(--m2-muted); margin: 6px 0 0; }
.m2-fact-verified .m2-fact-value { color: var(--m2-accent); }

/* cert */
.m2-cert-note {
    border: 1px solid var(--m2-line);
    border-left: 4px solid var(--m2-accent);
    padding: 24px 26px;
    background: var(--m2-neutral);
}
.m2-cert-note > p { margin: 0 0 16px; color: var(--m2-ink-2); }
.m2-cert-list {
    list-style: none;
    margin: 0 0 8px;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}
.m2-cert-list li {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 14px;
    background: #fff;
    border: 1px solid var(--m2-line);
    font-weight: 700;
    color: var(--m2-ink);
}
.m2-cert-k {
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: none;
    color: var(--m2-accent);
    font-weight: 800;
}

/* ============================================================
   CONTACT
   ============================================================ */
.m2-contact-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 40px;
    align-items: start;
}
.m2-contact-info { min-width: 0; }
.m2-contact-figure {
    border: 1px solid var(--m2-line);
    border-top: 3px solid var(--m2-ink);
    border-radius: var(--m2-radius);
    padding: 24px;
    text-align: center;
}
.m2-qr { margin: 0; }
.m2-qr img { width: 200px; max-width: 100%; margin: 0 auto; border: 1px solid var(--m2-line); }
.m2-qr figcaption { font-size: 13px; color: var(--m2-muted); margin-top: 14px; line-height: 1.6; }
.m2-qr-empty { color: var(--m2-muted); padding: 30px 10px; }

/* ============================================================
   PROFILE BANNER
   ============================================================ */
.m2-profile-banner { position: relative; background: var(--m2-ink); }
.m2-profile-banner-fig { margin: 0; max-height: 380px; overflow: hidden; }
.m2-profile-banner-fig img { width: 100%; height: 380px; object-fit: cover; opacity: .42; }
.m2-profile-banner-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #fff;
    max-width: var(--m2-shell);
    margin: 0 auto;
    padding: 0 24px;
}
.m2-profile-banner-overlay .m2-display { color: #fff; }
.m2-profile-banner-overlay .m2-lead { color: rgba(255,255,255,.85); }

/* ============================================================
   NEWS
   ============================================================ */
.m2-news-list { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--m2-ink); }
.m2-news-list li {
    display: flex;
    align-items: baseline;
    gap: 20px;
    padding: 22px 4px;
    border-bottom: 1px solid var(--m2-line);
    transition: background .15s;
}
.m2-news-list li:hover { background: var(--m2-neutral); }
.m2-news-num {
    font-family: var(--m2-head);
    font-size: 18px;
    color: var(--m2-accent);
    flex: 0 0 auto;
    line-height: 1;
}
.m2-news-body { flex: 1; min-width: 0; }
.m2-news-title {
    font-family: var(--m2-sans);
    font-weight: 700;
    font-size: 17px;
    color: var(--m2-ink);
    line-height: 1.4;
}
.m2-news-title:hover { color: var(--m2-accent); }
.m2-news-summary { font-size: 14px; color: var(--m2-muted); margin: 6px 0 0; line-height: 1.6; }
.m2-news-date {
    flex: 0 0 auto;
    font-size: 13px;
    color: var(--m2-muted);
    font-weight: 600;
    white-space: nowrap;
}

.m2-section-article { padding-top: 44px; }
.m2-article-h { margin-bottom: 28px; padding-bottom: 22px; border-bottom: 2px solid var(--m2-ink); }
.m2-article-meta {
    display: flex; flex-wrap: wrap; gap: 8px;
    font-size: 13px;
    color: var(--m2-muted);
    margin-top: 6px;
}
.m2-article-meta .dot { color: var(--m2-line); }
.m2-prose-article { font-size: 16px; }
.m2-article-foot { margin-top: 36px; padding-top: 26px; border-top: 1px solid var(--m2-line); }

/* ============================================================
   SITEMAP / INDEX
   ============================================================ */
.m2-side-card-wide { margin-bottom: 24px; }
.m2-index-list { list-style: none; margin: 0; padding: 0; }
.m2-index-list-2col { columns: 2; column-gap: 32px; }
.m2-index-list li { break-inside: avoid; border-top: 1px solid var(--m2-line); }
.m2-index-list li:first-child { border-top: 0; }
.m2-index-list a {
    display: block;
    padding: 9px 0 9px 16px;
    font-weight: 600;
    font-size: 14px;
    color: var(--m2-ink-2);
    position: relative;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.m2-index-list a::before {
    content: "›";
    position: absolute;
    left: 0;
    color: var(--m2-accent);
    font-weight: 800;
}
.m2-index-list a:hover { color: var(--m2-accent); }

/* ============================================================
   CTA BAND
   ============================================================ */
.m2-cta-band { background: var(--m2-ink); color: #fff; padding: 52px 0; }
.m2-cta-band-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}
.m2-cta-band-text { flex: 1; min-width: 260px; }
.m2-cta-band-text .m2-display, .m2-cta-band-text .m2-display-md { color: #fff; margin-bottom: 10px; }
.m2-cta-band-text p { color: rgba(255,255,255,.78); margin: 0; max-width: 52ch; }
.m2-cta-band .m2-cta-row { margin-top: 0; }

/* ============================================================
   FOOTER
   ============================================================ */
.m2-footer { background: var(--m2-ink); color: var(--m2-on-dark); padding: 52px 0 28px; }
.m2-footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1.2fr 1.2fr;
    gap: 36px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255,255,255,.14);
}
.m2-footer-brand {
    font-family: var(--m2-head);
    font-size: 22px;
    color: #fff;
    margin: 0 0 10px;
    text-transform: none;
}
.m2-footer-tag { font-size: 13.5px; color: var(--m2-on-dark-mut); margin: 0 0 14px; line-height: 1.6; }
.m2-footer-verified {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
    background: var(--m2-accent);
    padding: 4px 10px;
    border-radius: var(--m2-radius);
    margin: 0;
}
.m2-footer-h {
    display: block;
    font-family: var(--m2-head);
    font-size: 13px;
    letter-spacing: .04em;
    text-transform: none;
    color: #fff;
    margin-bottom: 14px;
}
.m2-footer-list { list-style: none; margin: 0; padding: 0; }
.m2-footer-list li { font-size: 13.5px; color: var(--m2-on-dark-mut); padding: 5px 0; }
.m2-footer-list a { color: var(--m2-on-dark-mut); }
.m2-footer-list a:hover { color: #fff; }
.m2-footer-key {
    display: inline-block;
    min-width: 52px;
    color: var(--m2-muted-2);
    font-weight: 700;
    margin-right: 6px;
}
.m2-footer-base {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 22px;
    font-size: 12.5px;
    color: var(--m2-on-dark-mut);
}
.m2-footer-base a { color: var(--m2-on-dark-mut); border-bottom: 1px solid rgba(255,255,255,.25); }
.m2-footer-base a:hover { color: #fff; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1200px) {
    .m2-prod-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1080px) {
    .m2-prod-grid { grid-template-columns: repeat(3, 1fr); }
    .m2-footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}

@media (max-width: 920px) {
    .m2-hero-grid { grid-template-columns: 1fr; gap: 30px; }
    .m2-prod-detail { grid-template-columns: 1fr; gap: 26px; }
    .m2-contact-grid { grid-template-columns: 1fr; }
    .m2-editorial { grid-template-columns: 1fr; gap: 24px; }
    .m2-editorial-aside { order: 2; }
    .m2-layout { grid-template-columns: 1fr; }
    .m2-side { position: static; flex-direction: row; flex-wrap: wrap; }
    .m2-side-card { flex: 1 1 260px; }
    .m2-main-col .m2-prod-grid { grid-template-columns: repeat(2, 1fr); }
    .m2-fact-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .m2-supplier-meta { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
    .m2-section { padding: 28px 0; }
    .m2-mast-row { flex-wrap: wrap; gap: 14px; }
    .m2-mast-actions { width: 100%; justify-content: space-between; }
    .m2-mast-cta { flex: 0 0 auto; }
    .m2-nav-list { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .m2-nav-list a { padding: 13px 14px; white-space: nowrap; }
    .m2-nav-list > li:first-child a { padding-left: 14px; }
    .m2-prod-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .m2-trust-list { grid-template-columns: repeat(2, 1fr); }
    .m2-trust-list li:nth-child(odd) { border-left: 0; }
    .m2-hero-stats { grid-template-columns: repeat(2, 1fr); }
    .m2-hero-stats > div:nth-child(2) { border-right: 0; }
    .m2-topbar-row { justify-content: center; }
    .m2-cert-list { grid-template-columns: 1fr; }
    .m2-news-list li { flex-wrap: wrap; gap: 6px 16px; }
    .m2-news-date { order: -1; flex-basis: auto; }
    .m2-cta-band-row { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .m2-prod-grid,
    .m2-main-col .m2-prod-grid { grid-template-columns: 1fr; }
    .m2-cat-grid { grid-template-columns: 1fr; }
    .m2-index-list-2col { columns: 1; }
    .m2-fact-grid, .m2-fact-grid-4 { grid-template-columns: 1fr; }
    .m2-brand-logo { width: 46px; height: 46px; flex-basis: 46px; }
    .m2-brand-name { font-size: 18px; }
    .m2-display { font-size: 30px; }
}

/* === nav-fill 铺满 === */
.m2-nav-list{display:flex;width:100%;flex-wrap:nowrap}
.m2-nav-list>a{flex:1 1 0;min-width:0;text-align:center;justify-content:center;white-space:nowrap}