/* ========== 规格与型号（01 / SERIES OVERVIEW） ========== */
.spec-sec {
    width: 100%;
    background-color: #ffffff;
    padding: 20px 0 25px;
}
.spec-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部眉标 */
.spec-eyebrow {
    font-size: 12px;
    color: #0066AE;
    letter-spacing: 0.6px;
    line-height: 1;
    margin: 0 0 14px 2px;
}

/* 大标题 */
.spec-title {
    font-size: 52px;
    font-weight: 800;
    color: #0e2436;
    letter-spacing: 1px;
    line-height: 1.05;
    margin: 0 0 36px;
}

/* 四列卡片 */
.spec-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.spec-card {
    display: flex;
    flex-direction: column;
    background-color: #ffffff;
    border: 1px solid #e8eaec;
    border-radius: 3px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.spec-card:hover {
    box-shadow: 0 8px 22px rgba(14, 36, 54, 0.1);
    transform: translateY(-3px);
}

/* 卡片图片 */
.spec-img {
    width: 100%;
    aspect-ratio: 242 / 141;
    overflow: hidden;
    background-color: #eef1f4;
}
.spec-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: transform 0.5s ease;
}
.spec-card:hover .spec-img img { transform: scale(1.04); }

/* 卡片文字区 */
.spec-body {
    padding: 14px 14px 16px;
}
.spec-name {
    font-size: 22px;
    font-weight: 800;
    color: #074C76;
    letter-spacing: 0.5px;
    margin: 0;
    line-height: 1.2;
}
.spec-sub {
    font-size: 13px;
    color: #7d8792;
    margin: 10px 0 0;
    line-height: 1.5;
}
.spec-nums {
    font-size: 13.5px;
    color: #55616d;
    margin: 14px 0 0;
    line-height: 1.75;
}

/* 底部条：尺寸与载荷 + 箭头 */
.spec-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    height: 34px;
    padding: 0 14px;
    background-color: #f6f8fa;
    border-top: 1px solid #eceef0;
}
.spec-bar-text {
    font-size: 13px;
    font-weight: bolder;
    color: #0066AE;
}
.spec-bar-arrow {
    font-size: 15px;
    color: #1a73c8;
    line-height: 1;
}

/* 响应式 */
@media (max-width: 992px) {
    .spec-title { font-size: 38px; margin-bottom: 26px; }
    .spec-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
}
@media (max-width: 560px) {
    .spec-sec { padding: 30px 0 36px; }
    .spec-eyebrow { font-size: 11px; margin-bottom: 10px; }
    .spec-title { font-size: 30px; margin-bottom: 20px; }
    .spec-grid { grid-template-columns: 1fr; gap: 12px; }
    .spec-name { font-size: 19px; }
    .spec-sub { font-size: 12px; }
    .spec-nums { font-size: 12.5px; }
}

/* ========== 尺寸完整表（02 / CATALOG DATA） ========== */
.tbl-sec {
    width: 100%;
    background-color: #ffffff;
    padding: 20px 0 0;
}
.tbl-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.tbl-eyebrow {
    font-size: 13px;
    font-weight: 600;
    color: #1668c5;
    letter-spacing: 0.5px;
    line-height: 1;
    margin: 0 0 12px;
}
.tbl-title {
    font-size: 52px;
    font-weight: 800;
    color: #0e2436;
    letter-spacing: 1px;
    line-height: 1.05;
    margin: 0 0 48px;
}

/* 系列标题 + 右侧说明 */
.tbl-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px;
    flex-wrap: wrap;
}
.tbl-series {
    font-size: 20px;
    font-weight: 800;
    color: #0e2436;
    margin: 0;
    line-height: 1.3;
}
.tbl-series-code {
    letter-spacing: 0.5px;
}
.tbl-note {
    font-size: 13px;
    color: #6b7680;
    margin: 0;
    line-height: 1.6;
}
.tbl-note-key {
    color: #1668c5;
}

@media (max-width: 992px) {
    .tbl-title { font-size: 38px; margin-bottom: 32px; }
    .tbl-series { font-size: 18px; }
}
@media (max-width: 560px) {
    .tbl-sec { padding: 30px 0 0; }
    .tbl-eyebrow { font-size: 12px; margin-bottom: 10px; }
    .tbl-title { font-size: 28px; margin-bottom: 22px; }
    .tbl-head { flex-direction: column; align-items: flex-start; gap: 10px; }
    .tbl-series { font-size: 16px; }
    .tbl-note { font-size: 12px; }
}

/* ========== 尺寸完整表1（图头 + 参数表） ========== */
.cat-sec {
    width: 100%;
    background-color: #ffffff;
    padding: 10px 0 15px;
}
.cat-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 10px;
}

/* 图头：左侧蓝色型号块 + 右侧尺寸示意图 */
.cat-card {
    display: flex;
    align-items: stretch;
    border: 1px solid #e3ecf3;
    border-radius: 2px;
    overflow: hidden;
    background-color: #ffffff;
}
.cat-card-label {
    width: 246px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #0067ac;
    color: #ffffff;
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 0.5px;
}
.cat-card-figs {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 8px 22px;
    min-width: 0;
}
.cat-fig {
    display: block;
    height: 215px;
    width: auto;
    max-width: 50%;
    object-fit: contain;
}

/* 表格标题条：左侧分组名 + 右侧单位 */
.cat-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-top: 12px;
    padding: 8px 14px;
    background-color: #f4f9fd;
    border: 1px solid #e3ecf3;
    border-bottom: none;
}
.cat-meta-title {
    font-size: 14px;
    font-weight: 700;
    color: #16232e;
}
.cat-meta-unit {
    font-size: 13px;
    color: #6b7680;
}

/* 参数表 */
.cat-scroll {
    width: 100%;
    overflow-x: auto;
}
.cat-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: auto;
    font-size: 14px;
    color: #16232e;
    background-color: #ffffff;
}
.cat-table th,
.cat-table td {
    border: 1px solid #e3ecf3;
    padding: 8px 6px;
    text-align: center;
    white-space: nowrap;
    line-height: 1.4;
}
.cat-table thead th {
    background-color: #13496d;
    color: #ffffff;
    font-weight: 700;
    border-color: rgba(255, 255, 255, 0.18);
}
.cat-table thead tr:first-child th {
    font-size: 14px;
    height: 42px;
}
.cat-table thead tr:nth-child(2) th {
    font-size: 13px;
    height: 40px;
}
.cat-th-model {
    width: 190px;
}
.cat-table td.cat-td-model {
    text-align: left;
    padding-left: 14px;
    font-weight: 700;
    color: #1668c5;
}
.cat-table tbody tr:hover td {
    background-color: #f7fbfe;
}
.cat-table sub {
    font-size: 10px;
    vertical-align: baseline;
    position: relative;
    top: 3px;
}

/* 表下注释 + 第二组表格区块 */
.cat-sec--z {
    padding-top: 20px;
}
.cat-note {
    font-size: 13px;
    color: #6b7680;
    line-height: 1.6;
    margin: 10px 0 26px;
}
.cat-note-key {
    color: #1668c5;
}

/* 第三组：系列小标题 + BTM 三图 + 紧凑表 */
.cat-series {
    font-size: 18px;
    font-weight: 800;
    color: #0e2436;
    line-height: 1.3;
    margin: 0 0 14px;
}
.cat-card-figs--btm {
    justify-content: center;
    padding: 0 12px;
}
.cat-fig--btm {
    height: 232px;
    max-width: 100%;
}
.cat-table--btm {
    font-size: 13px;
}
.cat-table--btm th,
.cat-table--btm td {
    padding: 8px 5px;
}
.cat-table--btm .cat-th-model {
    width: 118px;
}

/* 第四组：BTMW 17 列表格更紧凑 */
.cat-table--btmw {
    font-size: 12px;
}
.cat-table--btmw th,
.cat-table--btmw td {
    padding: 8px 4px;
}
.cat-table--btmw .cat-th-model {
    width: 106px;
}
.cat-table--btmw thead tr:nth-child(2) th {
    font-size: 12px;
}

@media (max-width: 992px) {
    .cat-card-label { width: 170px; font-size: 20px; }
    .cat-card-figs { padding: 8px 12px; gap: 10px; }
    .cat-fig { height: 150px; }
    .cat-table th,
    .cat-table td { padding: 7px 5px; font-size: 13px; }
    .cat-th-model { width: 150px; }
}
@media (max-width: 560px) {
    .cat-sec { padding: 10px 0 44px; }
    .cat-card { flex-direction: column; }
    .cat-card-label { width: 100%; height: 64px; font-size: 18px; }
    .cat-card-figs { flex-direction: column; padding: 12px; }
    .cat-fig { height: auto; width: 100%; max-width: 100%; }
    .cat-meta { padding: 7px 10px; }
    .cat-meta-title { font-size: 13px; }
    .cat-meta-unit { font-size: 12px; }
    .cat-table th,
    .cat-table td { padding: 6px 4px; font-size: 12px; }
    .cat-table td.cat-td-model { padding-left: 10px; }
}

/* ========== 机床应用（03 / MACHINE TOOL APPLICATIONS） ========== */
.mt-sec {
    width: 100%;
    background-color: #122c43;
    background-image: radial-gradient(ellipse 1000px 460px at 50% 50%, rgba(38, 76, 110, 0.42) 0%, rgba(18, 44, 67, 0) 78%);
    padding: 79px 0 123px;
}
.mt-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.mt-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 40px;
}
.mt-eyebrow {
    font-size: 13px;
    line-height: 1;
    letter-spacing: 0.6px;
    color: #acd9f9;
    margin: 0 0 16px;
}
.mt-title {
    font-size: 44px;
    font-weight: 800;
    line-height: 1;
    color: #ffffff;
    margin: 0;
}
.mt-desc {
    width: 390px;
    flex-shrink: 0;
    font-size: 16px;
    line-height: 29px;
    color: #dceaf7;
    text-align: justify;
    margin: 0;
}
.mt-body {
    display: flex;
    justify-content: space-between;
    gap: 1.5%;
    margin-top: 54px;
}
.mt-photo {
    display: block;
    overflow: hidden;
    text-decoration: none;
}
.mt-photo img {
    display: block;
    width: 100%;
    height: auto;
}
.mt-photo--main {
    flex: 0 0 61.1667%;
    max-width: 61.1667%;
}
.mt-photo--side {
    flex: 0 0 37.3333%;
    max-width: 37.3333%;
}

@media (max-width: 992px) {
    .mt-sec { padding: 56px 0 64px; }
    .mt-head { flex-direction: column; align-items: flex-start; gap: 20px; }
    .mt-eyebrow { font-size: 12px; margin-bottom: 12px; }
    .mt-title { font-size: 32px; }
    .mt-desc { width: 100%; font-size: 15px; line-height: 26px; }
    .mt-body { flex-direction: column; gap: 16px; margin-top: 32px; }
    .mt-photo--main,
    .mt-photo--side { flex: 0 0 auto; max-width: 100%; }
}
@media (max-width: 560px) {
    .mt-sec { padding: 40px 0 48px; }
    .mt-eyebrow { font-size: 11px; }
    .mt-title { font-size: 24px; }
    .mt-desc { font-size: 14px; line-height: 24px; }
    .mt-body { margin-top: 24px; }
}

/* ========== 关于博特（04 / ABOUT BTP） ========== */
.abt-sec {
    width: 100%;
    background-color: #ffffff;
    padding: 60px 0 70px;
}
.abt-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 40px;
}

/* 左：文字列 */
.abt-text {
    width: 39%;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}
.abt-eyebrow {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: #0f2a44;
    letter-spacing: 0.5px;
    line-height: 1;
    margin: 0 0 12px;
}
.abt-eyebrow-line {
    display: inline-block;
    width: 21px;
    height: 2px;
    background-color: #1467bd;
    flex-shrink: 0;
}
.abt-title {
    font-size: 29px;
    font-weight: 800;
    color: #0d2438;
    margin: 0 0 16px;
    line-height: 1.3;
}
.abt-desc {
    font-size: 14px;
    color: #5b6670;
    line-height: 1.9;
    margin: 0;
    text-align: justify;
}
.abt-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    align-self: flex-start;
    margin-top: auto;
    padding: 9px 16px;
    font-size: 13px;
    color: #ffffff;
    background-color: #1467bd;
    border-radius: 2px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}
.abt-btn:hover { background-color: #0f57a0; }
.abt-btn-arrow {
    display: inline-block;
    transition: transform 0.3s ease;
}
.abt-btn:hover .abt-btn-arrow { transform: translateX(3px); }

/* 右：厂区图 + 图注 */
.abt-media {
    width: 56.8%;
    flex-shrink: 0;
}
.abt-img {
    width: 100%;
    aspect-ratio: 572 / 173;
    overflow: hidden;
    border-radius: 2px;
}
.abt-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}
.abt-caption {
    font-size: 13px;
    color: #6b7680;
    margin: 12px 0 0;
    line-height: 1.4;
}

/* 响应式 */
@media (max-width: 992px) {
    .abt-container {
        flex-direction: column;
        gap: 30px;
    }
    .abt-text,
    .abt-media { width: 100%; }
    .abt-title { font-size: 26px; }
    .abt-btn { margin-top: 24px; }
    .abt-img { aspect-ratio: 16 / 9; }
}
@media (max-width: 560px) {
    .abt-sec { padding: 36px 0 44px; }
    .abt-eyebrow { font-size: 12px; }
    .abt-title { font-size: 21px; margin-bottom: 12px; }
    .abt-desc { font-size: 13px; margin-bottom: 24px; }
    .abt-btn { font-size: 13px; padding: 9px 16px; }
    .abt-caption { font-size: 12px; }
}