/* ============================================================
   Responsive — 1280 / 1024 / 768 / 480
   ============================================================ */

@media (max-width: 1280px) {
  .nav-links {
    gap: 16px;
  }

  .nav a.nl {
    font-size: 13.5px;
  }
}

@media (max-width: 1024px) {
  .nav .wrap {
    position: relative;
  }

  .menu-btn {
    display: block;
    order: 2;
  }

  .nav .nav-cta {
    order: 1;
    display: none;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    padding: 8px 24px 20px;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    z-index: 60;
  }

  .nav-links.is-open {
    display: flex;
    /* 抽屉可能比屏幕高(小屏 + 分类子项):限高并内部滚动。
       注意 header 有 backdrop-filter,固定定位会以 header 为包含块,所以这里用绝对定位 + max-height */
    max-height: calc(100vh - var(--nav-h));
    max-height: calc(100dvh - var(--nav-h));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    padding-bottom: calc(20px + env(safe-area-inset-bottom));
  }

  /* 抽屉打开时收起底部常驻 CTA,否则两套按钮叠在一起 */
  body:has(.nav-links.is-open) .sticky-cta {
    display: none;
  }

  .nav-links li {
    border-bottom: 1px solid var(--line);
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-links a.nl {
    display: block;
    padding: 14px 0;
    font-size: var(--fs-md);
  }

  .nav-links a.nl.active::after {
    display: none;
  }

  .nav-links .nav-cta-item {
    display: block;
    padding: 14px 0 4px;
  }

  .nav-links .nav-cta-item .btn {
    display: block;
    width: 100%;
  }

  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 30, 0.35);
    z-index: 45;
  }

  .nav-overlay.is-open {
    display: block;
  }

  .hero .wrap,
  .cm-grid,
  .rfq .wrap,
  .split,
  .cgrid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero {
    padding: 56px 0 64px;
  }

  .hero-img {
    transform: none;
  }

  .hero-img img {
    height: 320px;
  }

  .paths,
  .prods,
  .certs .row,
  .markets .row {
    grid-template-columns: 1fr 1fr;
  }

  .stats .wrap {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .gal {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 170px;
  }

  .gal .g:first-child {
    grid-column: span 2;
    grid-row: span 1;
  }

  .steps,
  .grid-4 {
    grid-template-columns: 1fr 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr 1fr;
  }

  footer .cols {
    grid-template-columns: 1fr 1fr;
  }

  .ph-head {
    padding: 44px 0 50px;
  }

  .ph-head h1 {
    font-size: 30px;
  }
}

@media (max-width: 768px) {
  .sec {
    padding: 60px 0;
  }

  .sec-h {
    margin-bottom: 32px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero p.lead {
    font-size: var(--fs-md);
  }

  .hero .mini {
    gap: 14px;
  }

  .hero-img img {
    height: 240px;
  }

  .paths,
  .prods,
  .certs .row,
  .markets .row,
  .grid-2,
  .grid-3,
  .grid-4,
  .steps,
  .cm-cards {
    grid-template-columns: 1fr;
  }

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

  .product-grid {
    grid-template-columns: 1fr;
  }

  .split {
    gap: 24px;
  }

  .prose h2 {
    font-size: 22px;
  }

  .rfq h2,
  .sec-h h2 {
    font-size: 26px;
  }

  .form-card {
    padding: 22px;
  }

  footer {
    padding: 44px 0 24px;
  }

  .dl-item {
    flex-wrap: wrap;
  }

  .dl-item .dl-action {
    margin-left: 0;
    width: 100%;
  }

  .dl-item .dl-action .btn {
    display: block;
    width: 100%;
  }

  .price .tbl {
    font-size: var(--fs-xs);
  }

  .price .tbl th,
  .price .tbl td {
    padding: 10px 8px;
  }

  .wa-float {
    width: 48px;
    height: 48px;
    right: 14px;
    bottom: 14px;
  }
}

@media (max-width: 480px) {
  .topbar .wrap {
    font-size: 11px;
    gap: 4px;
  }

  .logo .mark {
    height: 38px;
    width: 38px;
  }

  .logo .word {
    height: 15px;
  }

  .hero .cta .btn {
    width: 100%;
  }

  .stats .num {
    font-size: 26px;
  }

  .ph-head h1 {
    font-size: 26px;
  }

  .breadcrumb {
    font-size: var(--fs-xs);
  }

  footer .cols {
    grid-template-columns: 1fr;
  }

  .cm-card .v {
    font-size: 22px;
  }
}

/* ---------- Old-site trust blocks ---------- */
@media (max-width: 992px) {
  .free-grid,
  .testi-row {
    grid-template-columns: 1fr 1fr;
  }

  .flow {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .free-grid,
  .testi-row,
  .flow,
  .protect-list {
    grid-template-columns: 1fr;
  }

  .person-card {
    grid-template-columns: 1fr;
  }

  .badge-free {
    top: 12px;
    left: 12px;
    font-size: 11px;
  }
}

/* ---------- 2026-10 首页重构响应式 ---------- */
@media (max-width: 1024px) {
  /* 抽屉菜单里子类目直接平铺缩进展示 */
  .has-sub .sub {
    display: block;
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    border-top: 1px dashed var(--line);
    padding: 0 0 6px;
    min-width: 0;
  }

  .has-sub .sub a {
    padding: 10px 0 10px 18px;
    font-size: 14px;
  }

  .has-sub .caret {
    display: none;
  }

  .video-sec .wrap {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .faq-home {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .cert-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- 2026-11 重构响应式 ---------- */
@media (max-width: 1024px) {
  .proof,
  .duo {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .proof-strip {
    grid-template-columns: 1fr 1fr;
    margin-top: 28px;
  }

  .price-3 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .price-3 {
    grid-template-columns: 1fr;
  }

  .facts {
    gap: 12px 22px;
  }

  .facts > div {
    min-width: 96px;
  }

  .hero .facts {
    grid-template-columns: 1fr 1fr;
    gap: 12px 18px;
    margin-top: 18px;
    padding-top: 14px;
  }

  .cat-tabs a {
    padding: 8px 14px;
    font-size: 12px;
  }
}

@media (max-width: 1024px) {
  .nav-more {
    display: block;
    border-bottom: none !important;
  }

  .nav-more-h {
    display: block;
    padding: 16px 0 2px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-2);
  }

  .nav-more > ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0 24px;
  }

  .nav-more > ul li {
    border-bottom: none !important;
    list-style: none;
  }

  .nav-more > ul a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    font-size: 15px;
    font-weight: 600;
    color: var(--ink-2);
  }

  .nav-more > ul a:hover {
    color: var(--teal);
  }
}

@media (max-width: 768px) {
  .free-line {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

@media (max-width: 768px) {
  .stats .wrap {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .cert-strip,
  .proof-strip {
    grid-template-columns: 1fr;
  }
}

/* ---------- 顶栏在手机上换行成三行,直接收掉(headline 已有营业时间) ---------- */
@media (max-width: 768px) {
  .topbar {
    display: none;
  }

  /* 首屏已有底部常驻的 WhatsApp,重复按钮只会把实拍图往下推 */
  .hero .cta .btn--whatsapp {
    display: none;
  }

  /* 五条规模数字:最后一条占满一行,不留半个空格 */
  .stats .wrap > div:nth-child(5):last-child {
    grid-column: 1 / -1;
  }
}

/* ---------- 规格对比表:窄屏给固定宽度横向滚动,首列吸住 ---------- */
@media (max-width: 768px) {
  table.matrix {
    min-width: 720px;
  }

  table.matrix th[scope="row"] {
    position: sticky;
    left: 0;
    z-index: 2;
    min-width: 150px;
    max-width: 170px;
    white-space: normal;
    box-shadow: 1px 0 0 var(--line);
  }

  table.matrix thead th:first-child {
    position: sticky;
    left: 0;
    z-index: 3;
  }

  table.matrix td {
    min-width: 92px;
  }
}

/* 规格表横向滚动的提示:只在真的会滚动时才出现 */
.table-hint {
  display: none;
}

@media (max-width: 768px) {
  .table-hint {
    display: block;
    margin: 0 0 8px;
    font-size: 12px;
    color: var(--note-ink);
  }
}

/* 产品卡规格:窄屏两列会把 "S / M / L / XL" 挤成竖条,改成上下排 */
@media (max-width: 480px) {
  .product-card__specs dl {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .product-card__specs dt {
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }

  .product-card__specs dd {
    margin-bottom: 8px;
    text-align: left;
  }
}