/* ============================================
   世界杯官方网页版 - 赛事级运动装备研发
   暗色科技实验室风格
   ============================================ */

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

:root {
    --bg: #0a0e14;          /* 主体深炭 */
    --bg-2: #11161f;        /* 次级面板 */
    --bg-3: #1a2230;        /* 卡片 */
    --line: #232c3a;        /* 描边 */
    --line-bright: #3a4658;
    --text: #e6ebf2;
    --text-dim: #8e9aae;
    --text-mute: #5a6677;
    --brand: #ff4d2d;       /* 火橙红 强调 */
    --brand-2: #ff7a4d;
    --gold: #f0c34a;        /* 赛事金 */
    --accent: #00d4ff;      /* 科技青 */
    --green: #28d9a4;       /* 数据绿 */
}

html { scroll-behavior: smooth; }

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.75;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    background-image:
        radial-gradient(ellipse at top, rgba(255, 77, 45, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(0, 212, 255, 0.04) 0%, transparent 50%);
    background-attachment: fixed;
}

.mono {
    font-family: "SF Mono", "Roboto Mono", Menlo, Monaco, Consolas, monospace;
    letter-spacing: 0.5px;
}

a { text-decoration: none; color: var(--brand); transition: color 0.2s; }
a:hover { color: var(--brand-2); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.box-w { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============== 顶栏 ============== */
.bar-top {
    background: #060911;
    color: var(--text-dim);
    font-size: 12px;
    padding: 8px 0;
    border-bottom: 1px solid var(--line);
    letter-spacing: 1px;
}
.bar-top .box-w {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}
.bar-top .live {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--green);
}
.bar-top .live::before {
    content: "";
    width: 6px;
    height: 6px;
    background: var(--green);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--green);
    animation: blink 1.6s infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ============== 主导航 ============== */
header {
    background: rgba(10, 14, 20, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 100;
}
.head-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    gap: 24px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}
.logo-block {
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 14px;
    font-family: "SF Mono", monospace;
    border-radius: 4px;
    position: relative;
    box-shadow: 0 4px 14px rgba(255, 77, 45, 0.4);
}
.logo-block::after {
    content: "";
    position: absolute;
    inset: -2px;
    border: 1px solid var(--brand);
    border-radius: 6px;
    opacity: 0.4;
}
.logo-text strong {
    display: block;
    font-size: 17px;
    color: var(--text);
    letter-spacing: 1px;
    font-weight: 700;
}
.logo-text span {
    font-size: 10px;
    color: var(--text-mute);
    letter-spacing: 3px;
    text-transform: uppercase;
    font-family: "SF Mono", monospace;
}

nav ul { display: flex; gap: 4px; }
nav a {
    display: block;
    color: var(--text-dim);
    padding: 10px 14px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 4px;
    position: relative;
    transition: all 0.2s;
}
nav a:hover { color: var(--text); background: var(--bg-3); }
nav a.cur {
    color: var(--brand);
    background: rgba(255, 77, 45, 0.08);
}
nav a.cur::before {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 4px;
    height: 2px;
    background: var(--brand);
}

.menu-toggle {
    display: none;
    background: transparent;
    color: var(--brand);
    border: 1px solid var(--brand);
    width: 42px;
    height: 42px;
    border-radius: 4px;
    font-size: 18px;
    cursor: pointer;
}

/* ============== 首页 Hero ============== */
.hero {
    position: relative;
    padding: 100px 0 120px;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, transparent 49%, var(--line) 49%, var(--line) 51%, transparent 51%),
        linear-gradient(0deg, transparent 49%, var(--line) 49%, var(--line) 51%, transparent 51%);
    background-size: 60px 60px;
    opacity: 0.15;
    pointer-events: none;
}
.hero::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -100px;
    transform: translateY(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 77, 45, 0.12) 0%, transparent 60%);
    pointer-events: none;
}

.hero-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 0.85fr;
    gap: 60px;
    align-items: center;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    border: 1px solid var(--brand);
    color: var(--brand);
    border-radius: 30px;
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 26px;
    text-transform: uppercase;
    font-family: "SF Mono", monospace;
}
.hero-label::before {
    content: "//";
    color: var(--text-mute);
}

.hero h1 {
    font-size: 46px;
    line-height: 1.2;
    margin-bottom: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
}
.hero h1 em {
    color: var(--brand);
    font-style: normal;
    position: relative;
}
.hero h1 em::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 3px;
    background: var(--brand);
}

.hero p {
    color: var(--text-dim);
    font-size: 16px;
    margin-bottom: 32px;
    max-width: 560px;
}

.hero-cta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 26px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    border: 0;
    cursor: pointer;
    font-family: inherit;
    letter-spacing: 0.5px;
    transition: all 0.2s;
}
.btn-brand {
    background: var(--brand);
    color: #fff;
}
.btn-brand:hover {
    background: var(--brand-2);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(255, 77, 45, 0.35);
}
.btn-line {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--line-bright);
}
.btn-line:hover {
    border-color: var(--brand);
    color: var(--brand);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: rgba(17, 22, 31, 0.6);
    backdrop-filter: blur(8px);
}
.hero-stats div {
    padding: 22px 20px;
    border-right: 1px solid var(--line);
}
.hero-stats div:last-child { border-right: 0; }
.hero-stats strong {
    display: block;
    font-size: 28px;
    color: var(--brand);
    font-family: "SF Mono", monospace;
    margin-bottom: 4px;
    font-weight: 700;
}
.hero-stats span {
    font-size: 11px;
    color: var(--text-mute);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-card {
    position: relative;
    aspect-ratio: 4 / 5;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--line-bright);
    background: var(--bg-2);
}
.hero-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.7) contrast(1.1);
}
.hero-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, transparent 40%, rgba(10, 14, 20, 0.95) 100%);
}
.hero-card-tag {
    position: absolute;
    top: 18px;
    left: 18px;
    background: var(--brand);
    color: #fff;
    padding: 6px 12px;
    font-size: 11px;
    font-family: "SF Mono", monospace;
    letter-spacing: 2px;
    border-radius: 3px;
    z-index: 2;
}
.hero-card-foot {
    position: absolute;
    left: 22px;
    right: 22px;
    bottom: 22px;
    z-index: 2;
}
.hero-card-foot small {
    color: var(--text-mute);
    font-size: 11px;
    letter-spacing: 2px;
    font-family: "SF Mono", monospace;
}
.hero-card-foot h3 {
    color: #fff;
    font-size: 19px;
    margin-top: 6px;
}

/* ============== 内页 banner ============== */
.page-head {
    padding: 70px 0 50px;
    border-bottom: 1px solid var(--line);
    position: relative;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
}
.page-head::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(90deg, transparent 49%, var(--line) 49%, var(--line) 51%, transparent 51%);
    background-size: 60px 60px;
    opacity: 0.15;
}
.page-head .box-w { position: relative; z-index: 1; }
.page-head .crumb-mini {
    color: var(--text-mute);
    font-size: 12px;
    margin-bottom: 14px;
    font-family: "SF Mono", monospace;
    letter-spacing: 1px;
}
.page-head .crumb-mini a { color: var(--text-mute); }
.page-head .crumb-mini a:hover { color: var(--brand); }
.page-head h1 {
    font-size: 36px;
    color: var(--text);
    margin-bottom: 8px;
    font-weight: 800;
}
.page-head h1 em {
    color: var(--brand);
    font-style: normal;
}
.page-head .desc {
    color: var(--text-dim);
    max-width: 720px;
}

/* ============== 通用区段 ============== */
section { padding: 80px 0; }

.s-head {
    margin-bottom: 44px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 16px;
    flex-wrap: wrap;
}
.s-head-l label {
    color: var(--brand);
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-family: "SF Mono", monospace;
    display: block;
    margin-bottom: 10px;
}
.s-head-l label::before { content: "// "; }
.s-head-l h2 {
    font-size: 30px;
    color: var(--text);
    font-weight: 800;
    letter-spacing: -0.3px;
}
.s-head-l h2 em { color: var(--brand); font-style: normal; }
.s-head-l p {
    color: var(--text-dim);
    margin-top: 10px;
    max-width: 720px;
}
.s-head-r a {
    color: var(--brand);
    font-size: 13px;
    font-weight: 600;
    border-bottom: 1px solid var(--brand);
    padding-bottom: 2px;
}

.bg-pane { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ============== 能力四宫格 ============== */
.cap-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
}
.cap-cell {
    background: var(--bg-2);
    padding: 36px 24px;
    transition: background 0.3s;
}
.cap-cell:hover { background: var(--bg-3); }
.cap-cell .num {
    color: var(--brand);
    font-family: "SF Mono", monospace;
    font-size: 13px;
    letter-spacing: 3px;
    margin-bottom: 18px;
    display: block;
}
.cap-cell h3 {
    color: var(--text);
    font-size: 18px;
    margin-bottom: 12px;
}
.cap-cell p {
    color: var(--text-dim);
    font-size: 14px;
}

/* ============== 分类卡片 ============== */
.div-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.div-card {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 4 / 5;
    background: var(--bg-3);
    border: 1px solid var(--line);
    transition: border-color 0.3s, transform 0.3s;
}
.div-card:hover {
    border-color: var(--brand);
    transform: translateY(-5px);
}
.div-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.42;
    transition: opacity 0.4s, transform 0.6s;
}
.div-card:hover img { opacity: 0.55; transform: scale(1.05); }
.div-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(10, 14, 20, 0.95) 100%);
}
.div-card-info {
    position: absolute;
    left: 24px;
    right: 24px;
    bottom: 22px;
    z-index: 2;
}
.div-card-info small {
    color: var(--brand);
    font-family: "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 8px;
}
.div-card-info h3 {
    color: #fff;
    font-size: 23px;
    margin-bottom: 10px;
}
.div-card-info p {
    color: var(--text-dim);
    font-size: 13px;
    margin-bottom: 14px;
}
.div-card-info span {
    color: var(--text);
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.div-card-info span::after {
    content: "→";
    transition: transform 0.2s;
}
.div-card:hover .div-card-info span::after { transform: translateX(4px); }

/* ============== 商品 / 内容卡 ============== */
.item-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.item {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}
.item:hover {
    border-color: var(--brand);
    transform: translateY(-5px);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.4);
}

.item-img {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: var(--bg-3);
}
.item-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.85) contrast(1.05);
    transition: transform 0.5s;
}
.item:hover .item-img img { transform: scale(1.05); }
.item-img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(10, 14, 20, 0.6) 100%);
}

.item-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(10, 14, 20, 0.85);
    color: var(--brand);
    padding: 5px 10px;
    font-size: 11px;
    font-family: "SF Mono", monospace;
    letter-spacing: 2px;
    border: 1px solid var(--brand);
    border-radius: 3px;
    z-index: 2;
}

.item-code {
    position: absolute;
    top: 14px;
    right: 14px;
    color: var(--text-mute);
    font-family: "SF Mono", monospace;
    font-size: 11px;
    z-index: 2;
}

.item-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.item-cat {
    font-size: 11px;
    color: var(--brand);
    letter-spacing: 2px;
    margin-bottom: 10px;
    font-family: "SF Mono", monospace;
    text-transform: uppercase;
}
.item-body h3 {
    color: var(--text);
    font-size: 17px;
    line-height: 1.5;
    margin-bottom: 10px;
    font-weight: 700;
}
.item-body p {
    color: var(--text-dim);
    font-size: 14px;
    margin-bottom: 18px;
    flex: 1;
}
.item-foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    font-size: 13px;
}
.item-foot .meta {
    color: var(--text-mute);
    font-family: "SF Mono", monospace;
    font-size: 11px;
}
.item-foot .more-arrow {
    color: var(--brand);
    font-weight: 600;
    font-size: 13px;
}
.item-foot .more-arrow::after { content: " →"; }

/* ============== 关于段 ============== */
.intro-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.intro-pic {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    height: 460px;
    border: 1px solid var(--line-bright);
}
.intro-pic img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.85);
}
.intro-pic::before {
    content: "R&D · LAB";
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 2;
    background: var(--brand);
    color: #fff;
    padding: 6px 14px;
    font-family: "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 3px;
    border-radius: 3px;
}
.intro-text label {
    color: var(--brand);
    font-size: 12px;
    letter-spacing: 3px;
    font-family: "SF Mono", monospace;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 14px;
}
.intro-text label::before { content: "// "; }
.intro-text h2 {
    color: var(--text);
    font-size: 32px;
    margin-bottom: 22px;
    font-weight: 800;
    line-height: 1.3;
}
.intro-text p {
    color: var(--text-dim);
    margin-bottom: 16px;
}
.intro-bullets {
    margin-top: 24px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}
.intro-bullets li {
    padding: 14px;
    background: var(--bg-2);
    border-left: 2px solid var(--brand);
    color: var(--text);
    font-size: 14px;
}
.intro-bullets li small {
    display: block;
    color: var(--brand);
    font-family: "SF Mono", monospace;
    font-size: 11px;
    margin-bottom: 4px;
    letter-spacing: 2px;
}

/* ============== 科技/参数横条 ============== */
.spec-strip {
    background: linear-gradient(135deg, var(--bg-2) 0%, var(--bg-3) 100%);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 40px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}
.spec-strip > div {
    padding: 0 24px;
    border-right: 1px solid var(--line);
}
.spec-strip > div:last-child { border-right: 0; }
.spec-strip strong {
    display: block;
    font-size: 32px;
    color: var(--brand);
    font-family: "SF Mono", monospace;
    margin-bottom: 6px;
    font-weight: 700;
}
.spec-strip span {
    display: block;
    color: var(--text-dim);
    font-size: 13px;
}
.spec-strip em {
    display: block;
    color: var(--text-mute);
    font-size: 11px;
    font-family: "SF Mono", monospace;
    letter-spacing: 1px;
    margin-top: 3px;
    font-style: normal;
}

/* ============== 关键词条 ============== */
.kw-row {
    background: var(--bg-2);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 60px 0;
}
.kw-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.kw-cell {
    padding: 28px;
    background: var(--bg-3);
    border: 1px solid var(--line);
    border-radius: 6px;
    border-left: 3px solid var(--brand);
}
.kw-cell h4 {
    color: var(--text);
    font-size: 19px;
    margin-bottom: 10px;
}
.kw-cell h4 small {
    color: var(--brand);
    font-family: "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 6px;
}
.kw-cell p {
    color: var(--text-dim);
    font-size: 14px;
    margin-bottom: 14px;
}
.kw-cell a { color: var(--brand); font-size: 13px; font-weight: 600; }

/* ============== 详情页布局 ============== */
.detail-wrap {
    display: grid;
    grid-template-columns: 1fr 290px;
    gap: 30px;
}
.detail-main {
    background: var(--bg-2);
    border: 1px solid var(--line);
    padding: 40px 44px;
    border-radius: 8px;
}
.detail-main .top-code {
    color: var(--brand);
    font-family: "SF Mono", monospace;
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 16px;
}
.detail-main h1 {
    color: var(--text);
    font-size: 30px;
    margin-bottom: 18px;
    font-weight: 800;
    line-height: 1.3;
}
.detail-meta {
    color: var(--text-mute);
    font-size: 13px;
    margin-bottom: 26px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    font-family: "SF Mono", monospace;
}
.detail-meta span {
    display: inline-flex;
    gap: 6px;
}
.detail-meta b { color: var(--text-dim); font-weight: 500; }
.detail-pic {
    width: 100%;
    height: 380px;
    object-fit: cover;
    border-radius: 6px;
    margin-bottom: 28px;
    border: 1px solid var(--line);
    filter: brightness(0.9);
}
.detail-main h2 {
    color: var(--text);
    font-size: 21px;
    margin: 28px 0 14px;
    padding-left: 14px;
    border-left: 3px solid var(--brand);
    font-weight: 700;
}
.detail-main h3 {
    color: var(--brand);
    font-size: 16px;
    margin: 20px 0 10px;
    font-family: "SF Mono", monospace;
    letter-spacing: 1px;
}
.detail-main p {
    color: var(--text-dim);
    margin-bottom: 14px;
}
.detail-main p strong { color: var(--text); }
.detail-main ul,
.detail-main ol { margin: 12px 0 18px 24px; }
.detail-main ul li,
.detail-main ol li {
    color: var(--text-dim);
    margin-bottom: 8px;
    list-style: disc;
}
.detail-main ol li { list-style: decimal; }

.spec-table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    background: var(--bg-3);
    border: 1px solid var(--line);
    border-radius: 4px;
    overflow: hidden;
}
.spec-table th,
.spec-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
    text-align: left;
}
.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: 0; }
.spec-table th {
    color: var(--brand);
    width: 32%;
    font-family: "SF Mono", monospace;
    font-size: 12px;
    letter-spacing: 1px;
    background: rgba(255, 77, 45, 0.04);
}
.spec-table td { color: var(--text); }

.tag-bar {
    margin-top: 26px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
}
.tag-bar em {
    display: inline-block;
    background: var(--bg-3);
    color: var(--text-dim);
    border: 1px solid var(--line);
    padding: 5px 12px;
    font-size: 12px;
    font-family: "SF Mono", monospace;
    margin-right: 8px;
    margin-bottom: 6px;
    border-radius: 3px;
    font-style: normal;
}

.detail-aside .a-box {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 22px;
}
.detail-aside .a-box h3 {
    color: var(--text);
    font-size: 14px;
    padding: 14px 20px;
    background: var(--bg-3);
    border-bottom: 1px solid var(--line);
    letter-spacing: 1px;
}
.detail-aside .a-box h3::before {
    content: "// ";
    color: var(--brand);
    font-family: "SF Mono", monospace;
}
.detail-aside .a-box ul { padding: 8px 20px 16px; }
.detail-aside .a-box ul li {
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
}
.detail-aside .a-box ul li:last-child { border-bottom: 0; }
.detail-aside .a-box ul li a { color: var(--text-dim); }
.detail-aside .a-box ul li a:hover { color: var(--brand); padding-left: 4px; }

.a-cta {
    background: linear-gradient(135deg, var(--brand), var(--brand-2));
    color: #fff;
    padding: 26px 22px;
    border-radius: 8px;
    margin-bottom: 22px;
    position: relative;
    overflow: hidden;
}
.a-cta::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}
.a-cta h4 { color: #fff; font-size: 18px; margin-bottom: 8px; }
.a-cta p { color: rgba(255, 255, 255, 0.85); font-size: 13px; margin-bottom: 14px; }
.a-cta .btn { background: #fff; color: var(--brand); padding: 10px 18px; font-size: 13px; }
.a-cta .btn:hover { background: var(--bg); color: var(--brand-2); }

/* ============== 联系页 ============== */
.touch-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
}
.touch-card {
    background: var(--bg-2);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 36px;
}
.touch-card h3 {
    color: var(--text);
    font-size: 21px;
    margin-bottom: 8px;
}
.touch-card h3 small {
    display: block;
    color: var(--brand);
    font-size: 12px;
    letter-spacing: 2px;
    margin-bottom: 6px;
    font-family: "SF Mono", monospace;
}
.touch-card h3 small::before { content: "// "; }
.touch-card > p { color: var(--text-dim); font-size: 14px; margin-bottom: 22px; }

.touch-line {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    align-items: flex-start;
}
.touch-line:last-child { border-bottom: 0; }
.touch-line .ico {
    width: 38px;
    height: 38px;
    border: 1px solid var(--brand);
    color: var(--brand);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    flex-shrink: 0;
    font-family: "SF Mono", monospace;
    font-weight: 700;
}
.touch-line strong { display: block; color: var(--text); margin-bottom: 2px; font-size: 14px; }
.touch-line span { color: var(--text-dim); font-size: 13px; }

.field {
    margin-bottom: 16px;
}
.field label {
    display: block;
    color: var(--text-dim);
    font-size: 12px;
    margin-bottom: 6px;
    font-family: "SF Mono", monospace;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.field input,
.field textarea,
.field select {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-3);
    border: 1px solid var(--line);
    border-radius: 4px;
    color: var(--text);
    font-family: inherit;
    font-size: 14px;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
    outline: none;
    border-color: var(--brand);
    background: var(--bg-2);
}
.field input::placeholder,
.field textarea::placeholder { color: var(--text-mute); }
.field textarea { resize: vertical; min-height: 110px; }

/* ============== 页脚 ============== */
footer {
    background: #060911;
    border-top: 1px solid var(--line);
    padding: 60px 0 0;
    color: var(--text-mute);
}
.foot-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
    gap: 40px;
    margin-bottom: 36px;
}
.foot-grid h5 {
    color: var(--text);
    font-size: 13px;
    margin-bottom: 18px;
    letter-spacing: 2px;
    font-family: "SF Mono", monospace;
}
.foot-grid h5::before { content: "// "; color: var(--brand); }
.foot-grid p { color: var(--text-dim); font-size: 13px; line-height: 1.8; }
.foot-grid ul li {
    padding: 5px 0;
    font-size: 13px;
}
.foot-grid ul li a { color: var(--text-dim); }
.foot-grid ul li a:hover { color: var(--brand); }
.foot-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
}
.foot-brand strong {
    color: var(--text);
    font-size: 18px;
    letter-spacing: 1px;
}
.foot-bottom {
    border-top: 1px solid var(--line);
    padding: 20px 0;
    font-size: 12px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    color: var(--text-mute);
    font-family: "SF Mono", monospace;
    letter-spacing: 1px;
}

/* ============== 响应式 ============== */
@media (max-width: 992px) {
    .hero { padding: 60px 0 80px; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 34px; }
    .cap-grid { grid-template-columns: repeat(2, 1fr); }
    .div-grid { grid-template-columns: repeat(2, 1fr); }
    .item-grid { grid-template-columns: repeat(2, 1fr); }
    .intro-2col { grid-template-columns: 1fr; }
    .intro-pic { height: 320px; }
    .spec-strip { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
    .spec-strip > div { padding: 0 12px; }
    .spec-strip > div:nth-child(2) { border-right: 0; }
    .kw-grid { grid-template-columns: 1fr; }
    .detail-wrap { grid-template-columns: 1fr; }
    .touch-2col { grid-template-columns: 1fr; }
    .foot-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .menu-toggle { display: flex; align-items: center; justify-content: center; }
    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-2);
        border-top: 1px solid var(--line);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s;
    }
    nav.open { max-height: 600px; }
    nav ul { flex-direction: column; padding: 8px 0; }
    nav a {
        padding: 14px 24px;
        border-radius: 0;
        border-bottom: 1px solid var(--line);
    }
    nav a.cur::before { display: none; }
    .hero h1 { font-size: 26px; }
    .page-head h1 { font-size: 24px; }
    .s-head-l h2 { font-size: 22px; }
    section { padding: 50px 0; }
    .cap-grid { grid-template-columns: 1fr; }
    .div-grid { grid-template-columns: 1fr; }
    .item-grid { grid-template-columns: 1fr; }
    .hero-stats { grid-template-columns: 1fr; }
    .hero-stats div { border-right: 0; border-bottom: 1px solid var(--line); }
    .hero-stats div:last-child { border-bottom: 0; }
    .intro-bullets { grid-template-columns: 1fr; }
    .spec-strip { grid-template-columns: 1fr; padding: 20px; }
    .spec-strip > div { border-right: 0; border-bottom: 1px solid var(--line); padding: 16px 0; }
    .spec-strip > div:last-child { border-bottom: 0; }
    .detail-main { padding: 22px; }
    .detail-main h1 { font-size: 22px; }
    .detail-pic { height: 220px; }
    .foot-grid { grid-template-columns: 1fr; }
    .bar-top .hide-sm { display: none; }
}