/* ==========================================================================
   浙江朗宙工贸有限公司 —— 官网视觉系统 v1.0
   设计主题：钢与火（Steel & Heat）
   气质定位：工业、克制、稳重、有重量感
   ========================================================================== */

:root {
    /* 基底 —— 炭黑分层，由深至浅 */
    --ink-900: #0A0D11;
    --ink-800: #0F1318;
    --ink-700: #141A21;
    --ink-600: #1A212A;
    --ink-500: #222B36;
    --line: #2A3441;
    --line-soft: #1E262F;

    /* 文字 */
    --text-1: #E6EAEF;
    --text-2: #97A3B4;
    --text-3: #5E6B7C;

    /* 品牌 —— 钢蓝 */
    --steel-700: #16405C;
    --steel-600: #1D4E6F;
    --steel-500: #2A6B93;
    --steel-400: #4A90B8;

    /* 强调 —— 熔钢橙（CTA、关键数据） */
    --heat-600: #B8431A;
    --heat-500: #D9531E;
    --heat-400: #F2662A;

    /* 参数/数据青 */
    --data: #7FB4CE;

    --max: 1280px;
    --gut: 40px;

    --font-cn: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    --font-mono: "Roboto Mono", Consolas, "Courier New", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: clip; }

body {
    background: var(--ink-900);
    color: var(--text-1);
    font-family: var(--font-cn);
    font-size: 15px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gut); }

/* ---------- 工业网格纹理 ---------- */
.grid-bg {
    position: relative;
    background-image:
        linear-gradient(var(--line-soft) 1px, transparent 1px),
        linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
    background-size: 80px 80px;
    background-position: center top;
}

.grid-bg::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(42, 107, 147, .18), transparent 62%);
    pointer-events: none;
}

/* ==========================================================================
   顶部信息条 + 导航
   ========================================================================== */

.topbar {
    border-bottom: 1px solid var(--line-soft);
    font-size: 12.5px;
    color: var(--text-3);
    background: var(--ink-900);
}

.topbar .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 42px;
}

.topbar-left { display: flex; gap: 22px; }

.topbar-left span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.topbar-num { font-family: var(--font-mono); color: var(--text-2); letter-spacing: .04em; }

.site-head {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 13, 17, .94);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line-soft);
}

.site-head .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    width: 40px;
    height: 40px;
    border: 1.5px solid var(--steel-500);
    display: grid;
    place-items: center;
    font-family: var(--font-mono);
    font-size: 15px;
    font-weight: 700;
    color: var(--steel-400);
    letter-spacing: -.02em;
    position: relative;
}

.brand-mark::after {
    content: "";
    position: absolute;
    right: -4px;
    bottom: -4px;
    width: 8px;
    height: 8px;
    background: var(--heat-500);
}

.brand-text strong {
    display: block;
    font-size: 19px;
    font-weight: 800;
    letter-spacing: .06em;
    line-height: 1.3;
}

.brand-text small {
    display: block;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: .22em;
    color: var(--text-3);
    text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 4px; }

.nav > li > a {
    display: block;
    padding: 10px 15px;
    font-size: 14.5px;
    color: var(--text-2);
    position: relative;
    transition: color .2s;
}

.nav > li > a:hover { color: var(--text-1); }

.nav > li > a::after {
    content: "";
    position: absolute;
    left: 15px;
    right: 15px;
    bottom: 2px;
    height: 2px;
    background: var(--heat-500);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .25s;
}

.nav > li > a:hover::after,
.nav > li.active > a::after { transform: scaleX(1); }

.nav > li.active > a { color: var(--text-1); }

.nav-cta {
    margin-left: 18px;
    padding: 11px 24px !important;
    background: var(--heat-500);
    color: #fff !important;
    font-weight: 600;
    font-size: 14px !important;
    letter-spacing: .04em;
}

.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--heat-400); }

/* 移动端菜单按钮与抽屉导航 */
.menu-btn {
    display: none;
    width: 42px;
    height: 42px;
    background: none;
    border: 1px solid var(--line);
    cursor: pointer;
    padding: 0;
    position: relative;
    flex: none;
}
.menu-btn i {
    position: absolute;
    left: 10px;
    right: 10px;
    height: 2px;
    background: var(--text-1);
    transition: transform .25s, opacity .2s, top .25s;
}
.menu-btn i:nth-child(1) { top: 13px; }
.menu-btn i:nth-child(2) { top: 20px; }
.menu-btn i:nth-child(3) { top: 27px; }
.menu-btn.open i:nth-child(1) { top: 20px; transform: rotate(45deg); }
.menu-btn.open i:nth-child(2) { opacity: 0; }
.menu-btn.open i:nth-child(3) { top: 20px; transform: rotate(-45deg); }

.m-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--ink-800);
    border-bottom: 1px solid var(--line);
    overflow: hidden;
    max-height: 0;
    transition: max-height .3s ease;
}
.m-nav.open { max-height: 480px; }
.m-nav ul { padding: 6px 0 12px; }
.m-nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 28px;
    font-size: 14px;
    color: var(--text-2);
    border-bottom: 1px solid var(--line-soft);
}
.m-nav li:last-child a { border-bottom: none; }
.m-nav a .arr { font-family: var(--font-mono); color: var(--text-3); font-size: 13px; }
.m-nav a:hover, .m-nav li.active a { color: var(--text-1); }
.m-nav li.active a .arr { color: var(--heat-400); }
.m-nav a strong { color: var(--heat-400); font-weight: 600; }

/* ==========================================================================
   首屏
   ========================================================================== */

.hero {
    position: relative;
    padding: 96px 0 0;
    overflow: hidden;
    border-bottom: 1px solid var(--line-soft);
}

.hero-watermark {
    position: absolute;
    right: -40px;
    top: 40px;
    font-family: var(--font-mono);
    font-size: 190px;
    font-weight: 700;
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1px rgba(42, 107, 147, .13);
    user-select: none;
    pointer-events: none;
    letter-spacing: -.04em;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 64px;
    align-items: start;
    position: relative;
    z-index: 2;
    padding-bottom: 72px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .18em;
    color: var(--heat-400);
    text-transform: uppercase;
    margin-bottom: 26px;
}

.hero-tag::before {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--heat-500);
}

.hero h1 {
    font-size: 58px;
    line-height: 1.16;
    font-weight: 800;
    letter-spacing: -.015em;
    margin-bottom: 8px;
}

.hero h1 em {
    font-style: normal;
    color: var(--steel-400);
    display: block;
}

.hero-sub {
    margin-top: 26px;
    font-size: 16px;
    color: var(--text-2);
    max-width: 560px;
    line-height: 1.95;
}

.hero-sub strong { color: var(--text-1); font-weight: 600; }

.hero-actions {
    display: flex;
    gap: 14px;
    margin-top: 38px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    height: 50px;
    padding: 0 30px;
    font-size: 14.5px;
    font-weight: 600;
    letter-spacing: .04em;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .2s;
}

.btn-primary {
    background: var(--heat-500);
    color: #fff;
}

.btn-primary:hover { background: var(--heat-400); }

.btn-ghost {
    border-color: var(--line);
    color: var(--text-2);
    background: transparent;
}

.btn-ghost:hover {
    border-color: var(--steel-500);
    color: var(--text-1);
}

.btn .arrow { font-family: var(--font-mono); font-size: 16px; }

/* 首屏右侧参数面板 */
.spec-panel {
    border: 1px solid var(--line);
    background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
}

.spec-panel-head {
    padding: 14px 20px;
    border-bottom: 1px solid var(--line);
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .18em;
    color: var(--text-3);
    text-transform: uppercase;
    display: flex;
    justify-content: space-between;
}

.spec-panel-head .dot {
    color: var(--heat-500);
}

.spec-row-item {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding: 17px 20px;
    border-bottom: 1px solid var(--line-soft);
}

.spec-row-item:last-child { border-bottom: none; }

.spec-row-item .k {
    font-size: 13.5px;
    color: var(--text-3);
}

.spec-row-item .v {
    font-family: var(--font-mono);
    font-size: 21px;
    font-weight: 600;
    color: var(--text-1);
    letter-spacing: -.01em;
}

.spec-row-item .v small {
    font-size: 12px;
    color: var(--text-3);
    font-weight: 400;
    margin-left: 4px;
}

.spec-row-item .v.hot { color: var(--heat-400); }

/* 首屏底部数据条 */
.hero-strip {
    border-top: 1px solid var(--line-soft);
    background: var(--ink-800);
    position: relative;
    z-index: 2;
}

.hero-strip .wrap {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.strip-item {
    padding: 26px 0;
    text-align: center;
    border-right: 1px solid var(--line-soft);
}

.strip-item:last-child { border-right: none; }

.strip-item .num {
    font-family: var(--font-mono);
    font-size: 30px;
    font-weight: 700;
    color: var(--text-1);
    letter-spacing: -.02em;
    line-height: 1.2;
}

.strip-item .num span { font-size: 15px; color: var(--text-3); margin-left: 3px; }

.strip-item .lab {
    font-size: 12.5px;
    color: var(--text-3);
    letter-spacing: .1em;
    margin-top: 5px;
}

/* ==========================================================================
   区块通用
   ========================================================================== */

.section { padding: 96px 0; }

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 52px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--line-soft);
}

.sh-left { display: flex; align-items: baseline; gap: 18px; }

.sh-index {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--heat-500);
    letter-spacing: .1em;
}

.section-head h2 {
    font-size: 33px;
    font-weight: 800;
    letter-spacing: -.01em;
    line-height: 1.2;
}

.sh-en {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .2em;
    color: var(--text-3);
    text-transform: uppercase;
    padding-bottom: 5px;
}

.sh-more {
    font-size: 13.5px;
    color: var(--text-2);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 5px;
    transition: color .2s;
}

.sh-more:hover { color: var(--heat-400); }

/* ==========================================================================
   截面能力矩阵
   ========================================================================== */

.shapes {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--line-soft);
    border: 1px solid var(--line-soft);
}

.shape-card {
    background: var(--ink-800);
    padding: 32px 26px 30px;
    transition: background .25s;
    position: relative;
}

.shape-card:hover { background: var(--ink-700); }

.shape-card::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 2px;
    height: 0;
    background: var(--heat-500);
    transition: height .3s;
}

.shape-card:hover::after { height: 100%; }

.shape-figure {
    height: 62px;
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.shape-figure svg { overflow: visible; }

.shape-name {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: .02em;
}

.shape-meta {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-3);
    letter-spacing: .02em;
}

.shape-count {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--line-soft);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
}

.shape-count .n {
    font-family: var(--font-mono);
    font-size: 24px;
    font-weight: 700;
    color: var(--steel-400);
}

.shape-count .u { font-size: 12px; color: var(--text-3); }

/* ==========================================================================
   关于
   ========================================================================== */

.about-grid {
    display: grid;
    grid-template-columns: .92fr 1.08fr;
    gap: 70px;
    align-items: center;
}

.about-media {
    position: relative;
    border: 1px solid var(--line);
    aspect-ratio: 4 / 3.2;
    background:
        linear-gradient(135deg, var(--ink-600), var(--ink-800)),
        repeating-linear-gradient(45deg, transparent 0 8px, rgba(255,255,255,.012) 8px 16px);
    display: grid;
    place-items: center;
    overflow: hidden;
}

.about-media .ph {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .2em;
    color: var(--text-3);
    text-align: center;
    line-height: 2;
}

.about-media::after {
    content: "";
    position: absolute;
    inset: 14px;
    border: 1px solid rgba(42, 107, 147, .2);
    pointer-events: none;
}

.about-year {
    position: absolute;
    left: 0;
    bottom: 0;
    background: var(--heat-500);
    color: #fff;
    padding: 14px 22px;
    font-family: var(--font-mono);
    z-index: 2;
}

.about-year b { display: block; font-size: 24px; line-height: 1.1; }

.about-year span { font-size: 11px; letter-spacing: .16em; opacity: .85; }

.about-body h3 {
    font-size: 27px;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 24px;
    letter-spacing: -.01em;
}

.about-body p {
    color: var(--text-2);
    font-size: 14.5px;
    line-height: 2.05;
    margin-bottom: 18px;
}

.about-facts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--line-soft);
    border: 1px solid var(--line-soft);
    margin-top: 34px;
}

.fact {
    background: var(--ink-800);
    padding: 20px 22px;
}

.fact .k {
    font-size: 12.5px;
    color: var(--text-3);
    letter-spacing: .06em;
    margin-bottom: 7px;
}

.fact .v {
    font-family: var(--font-mono);
    font-size: 17px;
    color: var(--text-1);
    font-weight: 600;
}

.fact .v em { font-style: normal; font-size: 12px; color: var(--text-3); }

/* ==========================================================================
   规格库入口
   ========================================================================== */

.spec-cta {
    border: 1px solid var(--line);
    background:
        linear-gradient(180deg, rgba(29, 78, 111, .16), transparent 70%),
        var(--ink-800);
    padding: 56px 0 0;
    position: relative;
    overflow: hidden;
}

.spec-cta::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--heat-500), transparent);
}

.spec-cta-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 48px;
    align-items: center;
    padding: 0 48px 52px;
}

.spec-cta h3 {
    font-size: 31px;
    font-weight: 800;
    letter-spacing: -.01em;
    margin-bottom: 14px;
}

.spec-cta p {
    color: var(--text-2);
    font-size: 14.5px;
    max-width: 640px;
    line-height: 1.95;
}

.spec-cta p b { color: var(--heat-400); font-weight: 600; }

/* 抽样表格 */
.mini-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    margin-top: 30px;
}

.mini-table th {
    text-align: left;
    padding: 11px 16px;
    background: var(--ink-700);
    color: var(--text-3);
    font-weight: 500;
    font-size: 12px;
    letter-spacing: .08em;
    border-bottom: 1px solid var(--line);
}

.mini-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--line-soft);
    color: var(--text-2);
}

.mini-table td.n {
    font-family: var(--font-mono);
    color: var(--text-1);
    letter-spacing: .01em;
}

.mini-table td.hot { color: var(--heat-400); font-family: var(--font-mono); }

.mini-table tr:hover td { background: rgba(42, 107, 147, .07); }

/* ==========================================================================
   新闻
   ========================================================================== */

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--line-soft);
    border: 1px solid var(--line-soft);
}

.news-card {
    background: var(--ink-800);
    padding: 30px 28px 26px;
    display: flex;
    flex-direction: column;
    transition: background .25s;
    min-height: 268px;
}

.news-card:hover { background: var(--ink-700); }

.news-date {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-3);
    letter-spacing: .1em;
    margin-bottom: 16px;
}

.news-card h4 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.6;
    margin-bottom: 14px;
    letter-spacing: -.005em;
}

.news-card p {
    font-size: 13.5px;
    color: var(--text-3);
    line-height: 1.9;
    flex: 1;
}

.news-card .go {
    margin-top: 18px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--steel-400);
    letter-spacing: .1em;
}

/* ==========================================================================
   图集（荣誉 / 实力）
   ========================================================================== */

.tiles {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1px;
    background: var(--line-soft);
    border: 1px solid var(--line-soft);
}

.tile {
    background: var(--ink-800);
    aspect-ratio: 3 / 4;
    display: grid;
    place-items: center;
    padding: 22px 16px;
    text-align: center;
    position: relative;
    transition: background .25s;
    overflow: hidden;
}

.tile:hover { background: var(--ink-700); }

.tile .ico {
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    display: grid;
    place-items: center;
    margin-bottom: 18px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--steel-400);
}

.tile .cap {
    font-size: 13.5px;
    color: var(--text-2);
    line-height: 1.7;
}

.tile::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 2px;
    background: var(--heat-500);
    transform: scaleX(0);
    transition: transform .3s;
}

.tile:hover::after { transform: scaleX(1); }

/* ==========================================================================
   页脚
   ========================================================================== */

.site-foot {
    background: var(--ink-900);
    border-top: 1px solid var(--line);
    padding: 68px 0 0;
}

.foot-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 56px;
    padding-bottom: 52px;
}

.foot-brand .brand { margin-bottom: 22px; }

.foot-brand p {
    font-size: 13.5px;
    color: var(--text-3);
    line-height: 2;
    max-width: 320px;
}

.foot-col h5 {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .14em;
    color: var(--text-2);
    margin-bottom: 20px;
    text-transform: uppercase;
}

.foot-col li {
    font-size: 13.5px;
    color: var(--text-3);
    line-height: 2.2;
}

.foot-col li a:hover { color: var(--heat-400); }

.foot-contact .row {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 13.5px;
    color: var(--text-3);
    line-height: 1.8;
}

.foot-contact .row .lb {
    color: var(--text-3);
    flex: 0 0 46px;
}

.foot-contact .row .vl { color: var(--text-2); }

.foot-contact .row .vl.tel {
    font-family: var(--font-mono);
    font-size: 16px;
    color: var(--heat-400);
    letter-spacing: .02em;
}

.foot-bottom {
    border-top: 1px solid var(--line-soft);
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    font-size: 12.5px;
    color: var(--text-3);
    font-family: var(--font-mono);
    letter-spacing: .04em;
}

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 1100px) {
    :root { --gut: 28px; }
    .nav { display: none; }
    .menu-btn { display: block; }
    .m-nav { display: block; }
    .hero h1 { font-size: 46px; }
    .hero-grid { grid-template-columns: 1fr; gap: 44px; }
    .hero-watermark { font-size: 130px; }
    .shapes { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .news-grid { grid-template-columns: 1fr; }
    .tiles { grid-template-columns: repeat(3, 1fr); }
    .foot-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
    .spec-cta-inner { grid-template-columns: 1fr; padding: 0 28px 40px; }
}

@media (max-width: 720px) {
    /* 顶栏：只保留销售热线，居中 */
    .topbar { font-size: 11.5px; }
    .topbar .wrap { height: 36px; justify-content: center; }
    .topbar-left:first-of-type { display: none; }
    .topbar-left span:nth-child(2) { display: none; }

    .hero { padding-top: 48px; }
    .hero h1 { font-size: 31px; }
    .hero-sub { font-size: 14px; }
    .hero-watermark { font-size: 96px; top: 16px; right: -24px; }
    .hero-grid { gap: 40px; padding-bottom: 48px; }

    /* 参数面板收紧 */
    .spec-row-item { padding: 13px 16px; }
    .spec-row-item .k { font-size: 12.5px; }
    .spec-row-item .v { font-size: 16.5px; }

    /* 数据条 2×2，修正分隔线 */
    .hero-strip .wrap { grid-template-columns: repeat(2, 1fr); }
    .strip-item { padding: 18px 0; }
    .strip-item .num { font-size: 23px; }
    .strip-item:nth-child(2n) { border-right: none; }
    .strip-item:nth-child(n+3) { border-top: 1px solid var(--line-soft); }

    .section { padding: 56px 0; }
    .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
    .section-head h2 { font-size: 24px; }
    .shapes { grid-template-columns: 1fr; }
    .about-facts { grid-template-columns: 1fr; }
    .tiles { grid-template-columns: repeat(2, 1fr); }
    .foot-grid { grid-template-columns: 1fr; gap: 30px; }
    .foot-bottom { flex-direction: column; gap: 8px; }
    .mini-table { font-size: 12px; }
    .mini-table th, .mini-table td { padding: 9px 8px; }
    .mini-table .mt-hide { display: none; }
    .mini-table .n { white-space: nowrap; }
}

@media (max-width: 400px) {
    :root { --gut: 20px; }
    .hero h1 { font-size: 28px; }
    .spec-row-item .v { font-size: 15px; }
    .tiles { grid-template-columns: 1fr 1fr; }
}

/* ==========================================================================
   v2.1 真实素材：logo / 荣誉证书 / 企业实力照片 / 合作伙伴 / 微信码
   ========================================================================== */

/* 品牌区真实 logo（白底衬垫，jpg 白底不突兀） */
.brand-logoimg {
    height: 40px;
    background: #fff;
    padding: 7px 10px;
    display: flex; align-items: center; flex: none;
}
.brand-logoimg img { height: 100%; display: block; }
.brand-logoimg.sm { height: 34px; padding: 5px 8px; }

/* 荣誉证书网格 */
.honor-grid {
    display: grid; grid-template-columns: repeat(5, 1fr);
    gap: 1px; background: var(--line-soft);
    border: 1px solid var(--line-soft);
}
.honor-item { background: var(--ink-800); padding: 16px 16px 14px; }
.honor-item .himg {
    background: #fff; aspect-ratio: 4/3;
    display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.honor-item img { width: 100%; height: 100%; object-fit: contain; }
.honor-item .cap { margin-top: 10px; font-size: 12.5px; color: var(--text-2); line-height: 1.55; }

/* 企业实力照片卡 */
.strength-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 1px; background: var(--line-soft);
    border: 1px solid var(--line-soft);
}
.strength-card { background: var(--ink-800); }
.strength-card .simg { aspect-ratio: 3/4; overflow: hidden; }
.strength-card img {
    width: 100%; height: 100%; object-fit: cover;
    filter: saturate(.85) contrast(1.03); transition: transform .4s;
}
.strength-card:hover img { transform: scale(1.04); }
.strength-card .cap {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 14px; font-size: 13px; color: var(--text-1);
    border-top: 1px solid var(--line-soft);
}
.strength-card .cap em {
    font-family: var(--font-mono); font-style: normal;
    font-size: 10px; color: var(--text-3); letter-spacing: .12em;
}

/* 合作伙伴长图 */
.partner-strip {
    border: 1px solid var(--line-soft); background: var(--ink-800);
    padding: 30px 36px; display: flex; align-items: center;
}
.partner-strip img { width: 100%; }

/* 页脚微信二维码 */
.wx-cell { display: flex; gap: 12px; align-items: center; margin-top: 14px; }
.wx-cell img { width: 74px; height: 74px; background: #fff; padding: 5px; flex: none; }
.wx-cell span { font-size: 11px; color: var(--text-3); line-height: 1.7; }

@media (max-width: 1100px) {
    .honor-grid { grid-template-columns: repeat(3, 1fr); }
    .strength-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
    .honor-grid { grid-template-columns: repeat(2, 1fr); }
    .strength-grid { grid-template-columns: repeat(2, 1fr); }
    .partner-strip { padding: 18px; }
    .brand-logoimg { height: 34px; padding: 5px 8px; }
}

/* 页脚品牌 logo 略小，避免挤压英文名 */
.site-foot .brand-logoimg.sm { height: 28px; padding: 4px 7px; }

/* ---------- v2.2 Hero 背景视频（厂区/产线实拍） ---------- */
.hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    filter: saturate(.9);
}
.hero-shade {
    position: absolute;
    inset: 0;
    z-index: 1;
    background-image:
        linear-gradient(180deg, rgba(10,13,17,.88), rgba(10,13,17,.62) 52%, rgba(10,13,17,.94) 92%, var(--ink-900)),
        linear-gradient(90deg, rgba(26,33,42,.9), rgba(26,33,42,.35) 60%);
}
.hero-shade::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--line-soft) 1px, transparent 1px),
        linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: .5;
}
.hero .hero-watermark { z-index: 1; }
.hero .hero-grid { z-index: 2; }
.hero-strip { z-index: 3; }

/* ===== 企业实力卡：检测项目说明 ===== */
.strength-card .cap { flex-wrap: wrap; min-height: 60px; }
.strength-card .cap-note {
    flex: 0 0 100%; margin-top: 4px;
    font-size: 11px; color: var(--text-3); letter-spacing: .01em; line-height: 1.5;
}