/* ===== UTG 官网首页样式 ===== */
:root {
    --color-primary: #197FDE;
    --color-primary-dark: #0E6AC0;
    --color-primary-light: #4FA3F7;
    --color-dark: #081830;
    --color-darker: #061020;
    --color-darkest: #050810;
    --color-light: #F8F8F8;
    --color-light2: #F6F7FB;
    --color-white: #FFFFFF;
    --color-text: #07162B;
    --color-body: #5A6570;
    --color-muted: #8A94A0;
    --color-border: #E8E8F0;
    --color-border-dark: rgba(255, 255, 255, 0.12);
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow: 0 8px 32px rgba(7, 22, 43, 0.08);
    --shadow-lg: 0 20px 50px rgba(7, 22, 43, 0.12);
    --transition: 0.3s ease;
    --container: 1320px;
    --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-white);
    padding-bottom: 56px;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn i {
    font-size: 13px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    border-color: transparent;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(25, 127, 222, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline-primary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline-primary:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 15px;
    border-radius: 10px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

/* ===== 顶部信息条 ===== */
.topbar {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.75);
    font-size: 12px;
    padding: 8px 0;
}

.topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar-left,
.topbar-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.topbar a {
    color: rgba(255, 255, 255, 0.75);
}

.topbar a:hover {
    color: var(--color-white);
}

.topbar i {
    margin-right: 5px;
    color: var(--color-primary-light);
}

.topbar .cert i {
    color: var(--color-primary-light);
}

.topbar .lang a {
    opacity: 0.7;
}

.topbar .lang a.active,
.topbar .lang a:hover {
    opacity: 1;
    color: var(--color-white);
}

/* 顶部微信二维码悬浮框 */
.topbar-wechat {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.wechat-qrcode {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    width: 120px;
    height: 120px;
    padding: 8px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
    z-index: 9999;
}

.wechat-qrcode img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    border-radius: 4px;
}

.topbar-wechat:hover .wechat-qrcode {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 底部浮动条：二维码向上弹出 */
.float-wechat {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.float-wechat .wechat-qrcode {
    top: auto;
    bottom: calc(100% + 8px);
    transform: translateX(-50%) translateY(4px);
}

.float-wechat:hover .wechat-qrcode {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ===== 主导航 ===== */
.site-header {
    background: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(7, 22, 43, 0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.logo-text strong {
    font-size: 16px;
    color: var(--color-text);
    font-weight: 700;
}

.logo-text span {
    font-size: 10px;
    color: var(--color-muted);
    letter-spacing: 0.3px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.main-nav > a,
.nav-dropdown > a {
    padding: 8px 14px;
    font-size: 14px;
    color: var(--color-text);
    border-radius: 6px;
    transition: all var(--transition);
}

.main-nav > a:hover,
.main-nav > a.active,
.nav-dropdown > a.active,
.nav-dropdown:hover > a {
    color: var(--color-primary);
    background: rgba(25, 127, 222, 0.06);
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown > a i {
    font-size: 10px;
    margin-left: 4px;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background: var(--color-white);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 10px 18px;
    font-size: 14px;
    color: var(--color-text);
}

.dropdown-menu a:hover {
    background: var(--color-light2);
    color: var(--color-primary);
}

.dropdown-menu a.active {
    background: var(--color-light2);
    color: var(--color-primary);
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--color-text);
    cursor: pointer;
    border-radius: 50%;
    transition: background var(--transition);
}

.search-btn:hover {
    background: var(--color-light2);
}

/* ===== 站内搜索弹层 ===== */
.search-overlay {
    position: fixed;
    inset: 0;
    z-index: 9998;
    display: none;
    align-items: flex-start;
    justify-content: center;
}
.search-overlay.active {
    display: flex;
}
.search-overlay-mask {
    position: absolute;
    inset: 0;
    background: rgba(10, 24, 50, .58);
    backdrop-filter: blur(4px);
    animation: searchFade .25s ease;
}
.search-panel {
    position: relative;
    width: calc(100% - 40px);
    max-width: 620px;
    margin-top: 14vh;
    background: #fff;
    border-radius: 18px;
    padding: 28px 30px 24px;
    box-shadow: 0 30px 70px rgba(8, 22, 48, .35);
    animation: searchDrop .35s cubic-bezier(.22, .61, .36, 1);
}
.search-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 50%;
    background: #f1f5fa;
    color: #8a99b5;
    font-size: 15px;
    cursor: pointer;
    transition: .2s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.search-close:hover {
    background: #e2e9f4;
    color: #44566f;
    transform: rotate(90deg);
}
.search-panel-title {
    margin: 0 0 18px;
    font-size: 15px;
    font-weight: 700;
    color: #22344e;
    display: flex;
    align-items: center;
    gap: 8px;
}
.search-panel-title i {
    color: var(--color-primary, #197fde);
}
.search-input-row {
    display: flex;
    align-items: center;
    gap: 10px;
    border: 2px solid #e2e9f4;
    border-radius: 12px;
    padding: 6px 6px 6px 14px;
    transition: border-color .25s ease, box-shadow .25s ease;
}
.search-input-row:focus-within {
    border-color: var(--color-primary, #197fde);
    box-shadow: 0 0 0 4px rgba(25, 127, 222, .12);
}
.search-input-ico {
    color: #9fb0c8;
    font-size: 15px;
    flex: none;
}
.search-input-row input[type="search"] {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    font-size: 15px;
    color: #22344e;
    height: 40px;
}
.search-submit {
    flex: none;
    height: 40px;
    padding: 0 22px;
    border-radius: 9px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
}
.search-type-row {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}
.search-type {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 18px;
    border-radius: 999px;
    border: 1.5px solid #e2e9f4;
    font-size: 13.5px;
    color: #69788f;
    cursor: pointer;
    transition: .2s;
    user-select: none;
}
.search-type input {
    display: none;
}
.search-type:hover {
    border-color: #bcd4f7;
    color: var(--color-primary, #197fde);
}
.search-type.active {
    border-color: var(--color-primary, #197fde);
    background: rgba(25, 127, 222, .08);
    color: var(--color-primary, #197fde);
    font-weight: 600;
}
.search-type.active::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 12px;
}
@keyframes searchFade {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes searchDrop {
    from { opacity: 0; transform: translateY(-24px) scale(.97); }
    to { opacity: 1; transform: none; }
}
@media (max-width: 640px) {
    .search-panel {
        margin-top: 10vh;
        padding: 24px 18px 20px;
    }
    .search-input-row {
        flex-wrap: wrap;
    }
    .search-input-row input[type="search"] {
        flex: 1 1 calc(100% - 60px);
    }
    .search-submit {
        flex: 1 1 100%;
        justify-content: center;
    }
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--color-light2);
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
}

/* ===== Hero 首屏 ===== */
.hero {
    background: linear-gradient(135deg, var(--color-darker) 0%, #0A1B36 100%);
    color: var(--color-white);
    padding: 80px 0 70px;
    overflow: hidden;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.05);
}

.badge i {
    color: var(--color-primary-light);
}

.hero-title {
    font-size: 52px;
    line-height: 1.15;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.hero-title .text-blue {
    color: var(--color-primary-light);
    display: block;
    font-size: 0.6em;
    margin-top: 0.18em;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 8px;
}

.hero-subtitle strong {
    display: block;
    font-size: 18px;
    margin-bottom: 6px;
    color: var(--color-white);
}

.hero-desc {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    max-width: 520px;
    margin-bottom: 30px;
}

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

.hero-stats {
    display: flex;
    gap: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat strong {
    font-size: 36px;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 8px;
}

.stat span {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.65);
}

.hero-media {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 2fr 1fr;
    gap: 16px;
    height: 480px;
    transition: grid-template-rows 0.6s ease, grid-template-columns 0.6s ease;
}

.hero-img {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    cursor: pointer;
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.6s ease;
}

.hero-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.hero-img-main {
    grid-column: 1 / -1;
    grid-row: 1;
}

.hero-img:nth-child(2) {
    grid-column: 1;
    grid-row: 2;
}

.hero-img:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
}

/* 激活态：当前图片放大，其余缩小 + 变暗（整体区块 480px 高度不变） */
.hero-media--1 {
    grid-template-rows: 1fr 2fr;
    grid-template-columns: 2fr 1fr;
}

.hero-media--2 {
    grid-template-rows: 1fr 2fr;
    grid-template-columns: 1fr 2fr;
}

.hero-media .hero-img {
    opacity: 0.72;
}

.hero-media--0 .hero-img:nth-child(1),
.hero-media--1 .hero-img:nth-child(2),
.hero-media--2 .hero-img:nth-child(3) {
    opacity: 1;
    z-index: 2;
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.35);
}

.hero-media--0 .hero-img:nth-child(1) img,
.hero-media--1 .hero-img:nth-child(2) img,
.hero-media--2 .hero-img:nth-child(3) img {
    transform: scale(1.06);
}

.hero-text {
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.hero-text.changing {
    opacity: 0;
    transform: translateY(10px);
}

/* ===== 合作伙伴 Logo 条 ===== */
.partners-bar {
    background: var(--color-white);
    padding: 28px 0;
    border-bottom: 1px solid var(--color-border);
}

.partners-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.partners-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-body);
    white-space: nowrap;
}

.partners-label i {
    color: var(--color-primary);
    font-size: 18px;
}

.partners-logos {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.logo-item {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-item a {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-item img {
    display: block;
    height: 40px;
    width: auto;
    max-width: 160px;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.logo-item a:hover img {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

/* ===== 通用区块标题 ===== */
.section-header {
    margin-bottom: 50px;
}

.section-header.center {
    text-align: center;
}

.section-header.row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 20px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.section-header.center .section-label::before,
.section-header.center .section-label::after {
    content: "";
    width: 24px;
    height: 2px;
    background: var(--color-primary);
}

.section-header.light .section-label {
    color: var(--color-primary-light);
}

.section-header.light .section-label::before,
.section-header.light .section-label::after {
    background: var(--color-primary-light);
}

.section-title {
    font-size: 34px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 14px;
    line-height: 1.25;
}

.section-desc {
    font-size: 15px;
    color: var(--color-body);
    max-width: 600px;
}

.section-header.center .section-desc {
    margin: 0 auto;
}

.section-header.light .section-title,
.section-header.light .section-desc {
    color: var(--color-white);
}

.section-header.light .section-desc {
    opacity: 0.8;
}

/* ===== 通栏背景 ===== */
.section-light {
    background: var(--color-light);
    padding: 70px 0;
}

.section-light2 {
    background: var(--color-light2);
    padding: 70px 0;
}

.section-white {
    background: var(--color-white);
    padding: 70px 0;
}

.section-dark {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-darkest) 100%);
    color: var(--color-white);
    padding: 70px 0;
}

.section-darkest {
    background: var(--color-darker);
    color: var(--color-white);
    padding: 80px 0 30px;
}

.section-white-50 {
    background: var(--color-light);
    padding: 50px 0;
}

.section-top20 {
    background: var(--color-light);
    padding: 20px 0 50px 0;
}
.section-top10 {
    background: var(--color-light);
    padding: 10px 0 50px 0;
}

.section-white-30 {
    background: var(--color-light);
    padding:30px 0;
}

/* ===== 核心优势 ===== */
.why-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.why-us {
    background:
        radial-gradient(900px 420px at 12% 0%, rgba(79, 163, 247, 0.18) 0%, rgba(79, 163, 247, 0) 62%),
        radial-gradient(820px 420px at 90% 100%, rgba(25, 127, 222, 0.16) 0%, rgba(25, 127, 222, 0) 62%),
        linear-gradient(180deg, var(--color-light) 0%, var(--color-light2) 100%);
}

.why-card {
    position: relative;
    border-radius: var(--radius-lg);
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(14px) saturate(150%);
    -webkit-backdrop-filter: blur(14px) saturate(150%);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

/* 玻璃高光斜切面 */
.why-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0) 46%);
    pointer-events: none;
}

/* 四个卡片各自不同的深色渐变 */
.why-cards .why-card:nth-child(1) {
    background: linear-gradient(135deg, rgba(11, 74, 133, 0.92) 0%, rgba(25, 127, 222, 0.78) 100%);
}

.why-cards .why-card:nth-child(2) {
    background: linear-gradient(135deg, rgba(9, 76, 100, 0.92) 0%, rgba(23, 162, 184, 0.78) 100%);
}

.why-cards .why-card:nth-child(3) {
    background: linear-gradient(135deg, rgba(49, 42, 122, 0.92) 0%, rgba(103, 94, 214, 0.78) 100%);
}

.why-cards .why-card:nth-child(4) {
    background: linear-gradient(135deg, rgba(23, 37, 84, 0.94) 0%, rgba(56, 78, 133, 0.80) 100%);
}

.why-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.22);
    filter: brightness(1.07);
}

.why-icon {
    position: relative;
    width: 52px;
    height: 52px;
    background: rgba(255, 255, 255, 0.16);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 22px;
    margin-bottom: 20px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.why-card h3 {
    position: relative;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-white);
}

.why-card p {
    position: relative;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.78);
    margin-bottom: 18px;
    line-height: 1.65;
}

.why-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.why-tags span {
    position: relative;
    padding: 5px 10px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 6px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.9);
}

/* ===== 核心产品 ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

a.product-card {
    display: block;
    color: inherit;
    text-decoration: none;
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.product-img {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-light2);
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.product-card:hover .product-img img {
    transform: scale(1.05);
}

.product-card h3 {
    font-size: 16px;
    font-weight: 700;
    padding: 20px 20px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text);
}

.product-card h3 i {
    color: var(--color-primary);
    font-size: 15px;
}

.product-tags {
    padding: 0 20px;
}

.product-tag {
    display: inline-block;
    margin: 6px 8px 6px 0;
    font-size: 12px;
    color: var(--color-primary);
    background: rgba(25, 127, 222, 0.06);
    padding: 3px 12px;
    border-radius: 20px;
}

.product-card > p {
    font-size: 14px;
    color: var(--color-body);
    padding: 10px 20px 20px;
    line-height: 1.6;
}

/* ===== 自研工艺 ===== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 10px;
}

.tech-card {
    display: block;
    color: inherit;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}
.tech-card h3 { color: #fff; }

.tech-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-6px);
}

.tech-img {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-dark);
}

.tech-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tech-num {
    display: inline-block;
    margin: 20px 24px 0;
    width: 32px;
    height: 32px;
    line-height: 32px;
    text-align: center;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 13px;
    font-weight: 700;
}

.tech-card h3 {
    font-size: 18px;
    font-weight: 700;
    padding: 14px 24px 4px;
}

.tech-sub {
    font-size: 13px;
    color: var(--color-primary-light);
    padding: 0 24px;
    margin-bottom: 10px;
}

.tech-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    padding: 0 24px 24px;
    line-height: 1.65;
}

/* ===== 应用领域 ===== */
.app-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.app-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

.app-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.app-icon {
    width: 56px;
    height: 56px;
    background: rgba(25, 127, 222, 0.08);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    color: var(--color-primary);
    font-size: 24px;
}

.app-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}

.app-sub {
    display: inline-block;
    font-size: 12px;
    color: var(--color-primary);
    background: rgba(25, 127, 222, 0.06);
    padding: 2px 10px;
    border-radius: 20px;
    margin-bottom: 10px;
}

.app-card p {
    font-size: 13px;
    color: var(--color-body);
    line-height: 1.55;
}

/* 带背景图的卡片：深色蒙层 + 白色文字（与栏目页 ap-card--img 同款） */
.app-card.app-card--img{
    color:#fff;background-color:#0B1F3A;
    border:1px solid rgba(255,255,255,.18);
}
.app-card.app-card--img .app-icon{background:rgba(255,255,255,.16);color:#fff;}
.app-card.app-card--img h3{color:#fff;}
.app-card.app-card--img .app-sub{color:#cfe4fb;background:rgba(255,255,255,.16);}
.app-card.app-card--img p{color:rgba(255,255,255,.86);}
.app-card.app-card--img:hover{box-shadow:0 16px 34px rgba(7,22,43,.28);}

/* 留言表单验证码 */
.quote-form .form-captcha .captcha-row{display:flex;gap:10px;align-items:stretch;}
.quote-form .form-captcha .captcha-row input{flex:1;min-width:0;}
.quote-form .form-captcha .captcha-img{height:44px;border-radius:8px;cursor:pointer;border:1px solid #e6ecf4;display:block;}

.app-action {
    text-align: center;
}

/* ===== 工厂 & 研发实力 ===== */
.factory-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

/* ===== 工厂 & 研发实力 图片画廊（与 Hero 右侧同款悬停展开/变暗效果）===== */
.factory-media {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 2fr 1fr;
    gap: 16px;
    height: 600px;
    transition: grid-template-rows .6s ease, grid-template-columns .6s ease;
}

.factory-img {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: opacity .6s ease, transform .6s ease, box-shadow .6s ease;
}

.factory-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s ease;
}

.factory-img-main {
    grid-column: 1 / -1;
    grid-row: 1;
}

.factory-img:nth-child(2) {
    grid-column: 1;
    grid-row: 2;
}

.factory-img:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
}

/* 默认：主图激活，其余变暗 */
.factory-media .factory-img {
    opacity: .72;
}

.factory-media--0 .factory-img:nth-child(1),
.factory-media--1 .factory-img:nth-child(2),
.factory-media--2 .factory-img:nth-child(3) {
    opacity: 1;
    z-index: 2;
    box-shadow: 0 28px 60px rgba(0, 0, 0, .35);
}

.factory-media--0 .factory-img:nth-child(1) img,
.factory-media--1 .factory-img:nth-child(2) img,
.factory-media--2 .factory-img:nth-child(3) img {
    transform: scale(1.06);
}

/* 悬停副图时，网格重分配：被悬停的图展开，主图与另一张缩小 */
.factory-media--1 {
    grid-template-rows: 1fr 2fr;
    grid-template-columns: 2fr 1fr;
}

.factory-media--2 {
    grid-template-rows: 1fr 2fr;
    grid-template-columns: 1fr 2fr;
}

.factory-content .section-title {
    margin-top: 6px;
}

.factory-content .section-desc {
    margin-bottom: 28px;
}

.factory-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 16px;
}

.factory-feature {
    display: flex;
    gap: 14px;
    padding: 16px;
    background: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

/* 悬停动效：与 quote-contact（电话/邮箱卡片）同款 */
.factory-feature:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

.factory-feature-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: rgba(25, 127, 222, 0.08);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 18px;
}

.factory-feature-text h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 5px;
}

.factory-feature-text p {
    font-size: 13px;
    color: var(--color-body);
    line-height: 1.5;
}

/* ===== BLOG 资讯 ===== */
.blog-grid {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 24px;
    align-items: start;
}

/* 左列：最新推荐大卡 */
.blog-main {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* 右列：两张图文卡 */
.blog-side {
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-width: 0;
}

.blog-side .blog-card .blog-img {
    height: 150px;
}

/* 大框内的最新资讯列表：小三角 + [时间] + 标题 */
.blog-featured-link {
    display: block;
    color: inherit;
    text-decoration: none;
}

.blog-inline {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px 24px;
    margin: 0 22px;
    padding: 14px 0 18px;
    border-top: 1px solid var(--color-border);
}

.blog-inline-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 0;
    font-size: 13px;
    line-height: 1.6;
    color: var(--color-body);
    text-decoration: none;
}

.blog-inline-item i {
    flex-shrink: 0;
    font-size: 11px;
    color: var(--color-primary);
}

.blog-inline-date {
    flex-shrink: 0;
    color: var(--color-muted);
}

.blog-inline-title {
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color var(--transition);
}

.blog-inline-item:hover .blog-inline-title {
    color: var(--color-primary);
}

.blog-card {
    position: relative;
    display: block;
    overflow: hidden;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: inherit;
    text-decoration: none;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

/* 头条大卡 */
.blog-card--featured .blog-img {
    height: 280px;
}

.blog-img {
    height: 150px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.55);
    font-size: 34px;
}

.blog-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.blog-card:hover .blog-img img {
    transform: scale(1.05);
}

.blog-body {
    padding: 20px 22px 22px;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    font-size: 12px;
}

.blog-cat {
    color: var(--color-primary);
    background: rgba(25, 127, 222, 0.08);
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 600;
}

.blog-date {
    color: var(--color-muted);
}

.blog-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.45;
    margin-bottom: 8px;
}

.blog-card--featured h3 {
    font-size: 20px;
}

.blog-card p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.7;
    margin-bottom: 12px;
}

.blog-more {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
}

.blog-more i {
    margin-left: 4px;
    transition: transform var(--transition);
}

.blog-card:hover .blog-more i {
    transform: translateX(4px);
}

/* ===== 客户案例 ===== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.case-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--color-primary);
    background: rgba(25, 127, 222, 0.08);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 14px;
}

.case-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
}

.case-card p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.65;
}

/* ===== 下载资料横幅 ===== */
.download-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    background: linear-gradient(135deg, #0B1F3A 0%, #0E2B50 100%);
    border-radius: var(--radius-xl);
    padding: 40px 50px;
}

.download-icon {
    width: 64px;
    height: 64px;
    min-width: 64px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--color-white);
}

.download-text {
    flex: 1;
}

.download-text h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 6px;
}

.download-text p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
}

/* ===== 定制方案 / 询盘表单 ===== */
.quote-inner {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 50px;
    align-items: start;
}

.quote-info .section-desc {
    margin-bottom: 30px;
}

.quote-contacts {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.quote-contact {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--color-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

.quote-contact:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

.quote-contact i {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: rgba(25, 127, 222, 0.08);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 18px;
}

.quote-contact h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
}

.quote-contact p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
}

/* 报价区 WeChat 卡片：悬停向上弹出二维码 */
.quote-wechat{position:relative;}
.quote-wechat .wechat-qrcode{
    top:auto;bottom:calc(100% + 10px);
    width:150px;height:150px;padding:10px;border-radius:10px;
    transform:translateX(-50%) translateY(6px);
}
.quote-wechat:hover .wechat-qrcode,
.quote-wechat:focus .wechat-qrcode{
    opacity:1;visibility:visible;
    transform:translateX(-50%) translateY(0);
}

.quote-form-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-lg);
}

.quote-form-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}

.form-tip {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: 24px;
}

.quote-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 7px;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-white);
    transition: border-color var(--transition), box-shadow var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(25, 127, 222, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-muted);
}

.form-group textarea {
    resize: vertical;
}

.form-privacy {
    margin-top: 16px;
    font-size: 12px;
    color: var(--color-muted);
    text-align: center;
}

.form-privacy i {
    margin-right: 4px;
}

/* ===== 页脚 ===== */
.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .footer-logo {
    margin-bottom: 20px;
}

.footer-brand .footer-logo .logo-text strong {
    color: var(--color-white);
}

.footer-brand > p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.7;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.75);
    font-size: 15px;
    transition: all var(--transition);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
}

/* 底部微信图标：悬停向上弹出二维码 */
.footer-wechat { position: relative; display: inline-flex; align-items: center; }
.footer-wechat .wechat-qrcode {
    top: auto; bottom: calc(100% + 10px);
    transform: translateX(-50%) translateY(4px);
    width: 130px; height: 130px; padding: 8px;
    background: #fff; border-radius: 8px;
}
.footer-wechat:hover .wechat-qrcode {
    opacity: 1; visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 11px;
}

.footer-col ul li a,
.footer-col ul li {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    transition: color var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-white);
}

.footer-contact ul li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.footer-contact ul li i {
    margin-top: 3px;
    color: var(--color-primary-light);
    min-width: 16px;
}

.footer-contact .btn {
    margin-top: 16px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom p {
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-links a,
.footer-links span {
    color: rgba(255, 255, 255, 0.5);
}

.footer-links a:hover {
    color: var(--color-white);
}

/* ===== 悬浮客服条 ===== */
.float-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-dark);
    color: var(--color-white);
    padding: 12px 0;
    z-index: 999;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
}

.float-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.float-bar-left {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.online-dot {
    width: 8px;
    height: 8px;
    background: #22C55E;
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.25);
}

.float-bar-right {
    display: flex;
    gap: 10px;
}

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
    .main-nav > a,
    .nav-dropdown > a {
        padding: 8px 10px;
        font-size: 13px;
    }

    .hero-title {
        font-size: 42px;
    }

    .why-cards,
    .product-grid,
    .tech-grid,
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .app-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .factory-inner,
    .quote-inner {
        grid-template-columns: 1fr;
    }

    .factory-media {
        max-width: 700px;
        margin: 0 auto;
        grid-template-columns: 1fr;
        grid-template-rows: none;
        height: auto;
        gap: 14px;
    }

    .factory-img {
        aspect-ratio: 16 / 10;
    }

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

@media (max-width: 992px) {
    .hero-inner {
        grid-template-columns: 1fr;
    }

    .hero-media {
        order: -1;
        max-width: 600px;
        margin: 0 auto 40px;
        height: 360px;
    }

    .header-actions .btn-primary {
        display: none;
    }
}

@media (max-width: 768px) {
    body {
        padding-bottom: 110px;
    }

    .topbar-left > a:nth-child(2),
    .topbar-left > .topbar-wechat {
        display: none;
    }

    /* 顶部信息条：移动端收窄排版 */
    .topbar-inner {
        flex-wrap: wrap;
        justify-content: space-between;
        row-gap: 4px;
    }
    .topbar-left,
    .topbar-right {
        gap: 12px;
        white-space: nowrap;
    }
    .topbar .cert {
        display: none;
    }

    .main-nav,
    .header-actions .search-btn {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .hero {
        padding: 50px 0;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat strong {
        font-size: 28px;
    }

    .section-title {
        font-size: 26px;
    }

    .section-header.row {
        flex-direction: column;
        align-items: flex-start;
    }

    .why-cards,
    .product-grid,
    .tech-grid,
    .app-grid,
    .blog-grid,
    .blog-inline,
    .case-grid {
        grid-template-columns: 1fr;
    }

    .partners-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .partners-logos {
        justify-content: flex-start;
        width: 100%;
    }

    .download-inner {
        flex-direction: column;
        text-align: center;
        padding: 30px;
    }

    .quote-form-card {
        padding: 24px;
    }

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

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 14px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .float-bar-inner {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-media {
        height: 300px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .logo-text {
        display: block;
    }

    .logo-text strong {
        font-size: 15px;
    }

    .logo-text span {
        letter-spacing: 0;
    }
}

/* ===== 移动端菜单 ===== */
.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    z-index: 998;
    padding: 20px;
    overflow-y: auto;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav a {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 16px;
}

.mobile-nav .btn-primary {
    margin-top: 20px;
    width: 100%;
}

.mobile-nav a.sub {
    padding: 11px 0 11px 18px;
    font-size: 14px;
    color: var(--color-muted, #69788f);
    position: relative;
}

.mobile-nav a.sub::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 50%;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #b8c8de;
    transform: translateY(-50%);
}

/* ===== 商品详情页 ===== */
.product-detail {
    padding-top: 20px;
}

.pd-hero {
    padding: 40px 0 60px;
}

.pd-breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: 30px;
}

.pd-breadcrumb a {
    color: var(--color-body);
}

.pd-breadcrumb a:hover {
    color: var(--color-primary);
}

.pd-breadcrumb i {
    font-size: 10px;
}

.pd-breadcrumb span {
    color: var(--color-text);
}

.pd-hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 50px;
    align-items: start;
}

.pd-media {
    position: sticky;
    top: 90px;
}

.pd-main-img {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 420px;
}

.pd-main-img img {
    width: 100%;
    height: auto;
    display: block;
}

.pd-no-img {
    width: 100%;
    height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-muted);
    font-size: 64px;
    background: var(--color-bg);
}

.pd-thumb-list {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.pd-thumb {
    width: 72px;
    height: 72px;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition);
}

.pd-thumb.active,
.pd-thumb:hover {
    border-color: var(--color-primary);
}

.pd-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pd-info {
    padding-top: 10px;
}

.pd-cat {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.pd-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.25;
    margin-bottom: 16px;
}

.pd-price {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.pd-price small {
    font-size: 16px;
    font-weight: 400;
    color: var(--color-body);
}

.pd-desc {
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-body);
    margin-bottom: 28px;
}

.pd-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.pd-actions .btn-lg {
    padding: 14px 28px;
    font-size: 15px;
}

.pd-section {
    padding: 70px 0;
}

.pd-section.section-light {
    background: var(--color-bg);
}

.pd-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.pd-hl-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 34px 28px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

.pd-hl-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.pd-hl-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin: 0 auto 18px;
}

.pd-hl-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 10px;
}

.pd-hl-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-body);
}

.pd-spec-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.pd-spec-table tr:not(:last-child) {
    border-bottom: 1px solid var(--color-border);
}

.pd-spec-table td {
    padding: 16px 24px;
    font-size: 14px;
}

.pd-spec-name {
    width: 25%;
    font-weight: 600;
    color: var(--color-dark);
    background: var(--color-bg);
}

.pd-spec-value {
    width: 35%;
    color: var(--color-text);
}

.pd-spec-note {
    width: 40%;
    color: var(--color-body);
}

.pd-applications {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.pd-app-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform var(--transition);
}

.pd-app-card:hover {
    transform: translateY(-5px);
}

.pd-app-img {
    height: 200px;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.pd-app-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pd-app-img i {
    font-size: 40px;
    color: var(--color-muted);
}

.pd-app-card h3 {
    font-size: 17px;
    font-weight: 700;
    padding: 20px 20px 8px;
    color: var(--color-dark);
}

.pd-app-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-body);
    padding: 0 20px 24px;
}

.pd-body {
    max-width: 900px;
    margin: 0 auto;
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-body);
}

.pd-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
}

.pd-related {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.pd-related-card {
    display: block;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    text-decoration: none;
    transition: transform var(--transition), box-shadow var(--transition);
}

.pd-related-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.pd-related-img {
    height: 160px;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.pd-related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pd-related-img i {
    font-size: 32px;
    color: var(--color-muted);
}

.pd-related-card h4 {
    font-size: 15px;
    font-weight: 600;
    padding: 16px;
    color: var(--color-dark);
}

@media (max-width: 992px) {
    .pd-hero-grid {
        grid-template-columns: 1fr;
    }

    .pd-media {
        position: static;
    }

    .pd-highlights,
    .pd-applications,
    .pd-related {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .pd-title {
        font-size: 26px;
    }

    .pd-price {
        font-size: 24px;
    }

    .pd-actions .btn-lg {
        width: 100%;
    }

    .pd-highlights,
    .pd-applications,
    .pd-related {
        grid-template-columns: 1fr;
    }

    .pd-spec-table td {
        display: block;
        width: 100%;
    }

    .pd-spec-name {
        background: transparent;
        padding-bottom: 4px;
    }

    .pd-section {
        padding: 50px 0;
    }
}