:root {
    --black: #1A1A1A;
    --gold: #B89668;
    --gold-light: #D4B48C;
    --gold-dark: #9A7A4E;
    --gold-pale: #F0E4D0;
    --gold-glow: rgba(184, 150, 104, 0.15);
    --white: #ffffff;
    --off-white: #F9F8F5;
    --gray-light: #F0EFEB;
    --gray-mid: #C5C2B8;
    --text-dark: #1A1A1A;
    --text-gray: #6B6A66;
    --text-light: #9A9892;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --shadow-sm: 0 2px 16px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 40px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 30px 80px rgba(0, 0, 0, 0.10);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --section-padding: 80px 0;
    /* 中文字体栈 */
    --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', 'STSong', serif;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-sans);
    color: var(--text-dark);
    background: var(--off-white);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    font-weight: 700;
}

/* ===== Navigation ===== */
header {
    background: transparent;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    transition: var(--transition);
    padding: 18px 0 14px;
}
header.scrolled {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}
.container {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 60px;
}
.nav-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.brand-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
    color: var(--white);
    gap: 12px;
}
.brand-logo .logo-text {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 2px;
    line-height: 1.2;
    font-family: var(--font-serif);
}
.brand-logo .logo-text span {
    color: var(--gold);
    font-weight: 400;
}
.brand-logo .logo-text .sub {
    font-size: 11px;
    font-weight: 300;
    letter-spacing: 4px;
    opacity: 0.6;
    display: block;
    margin-top: 2px;
    font-family: var(--font-sans);
}
.brand-logo .logo-img-wrap {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.brand-logo .logo-img-wrap img {
    display: block;
    max-height: 44px;
    width: auto;
    object-fit: contain;
}
.brand-logo .logo-img-wrap .logo-img-sub {
    font-size: 10px;
    font-weight: 400;
    letter-spacing: 3px;
    opacity: 0.7;
    margin-top: 2px;
    line-height: 1.2;
    color: var(--white);
    font-family: var(--font-sans);
}
.brand-logo.logo-img-mode .logo-text {
    display: none;
}
.brand-logo.logo-img-mode .logo-img-wrap {
    display: flex;
}
.nav-list {
    display: flex;
    gap: 32px;
    align-items: center;
}
.nav-list>li {
    list-style: none;
    position: relative;
}
.nav-list>li>a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.5px;
    transition: var(--transition);
    position: relative;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 0;
    white-space: nowrap;
    font-family: var(--font-sans);
}
.nav-list>li>a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--gold);
    transition: var(--transition);
}
.nav-list>li>a:hover::after {
    width: 100%;
}
.nav-list>li>a:hover {
    color: #fff;
}
.nav-list>li>a .arrow {
    font-size: 10px;
    transition: var(--transition);
    margin-left: 2px;
    opacity: 0.6;
}
.nav-list>li:hover>a .arrow {
    transform: rotate(180deg);
    opacity: 1;
}
.nav-list .sub-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(6px);
    min-width: 200px;
    background: rgba(26, 26, 26, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 12px;
    padding: 10px 0;
    padding-top: 8px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
    transition-delay: 0s, 0.18s, 0s;
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    list-style: none;
    z-index: 100;
}
.nav-list>li:hover>.sub-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
    transition-delay: 0s, 0s, 0s;
}
.nav-list .sub-menu::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: rgba(26, 26, 26, 0.97);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-left: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 2px;
}
.nav-list .sub-menu li {
    list-style: none;
    position: relative;
}
.nav-list .sub-menu li a {
    display: block;
    padding: 8px 24px;
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition);
    white-space: nowrap;
    letter-spacing: 0.3px;
    font-family: var(--font-sans);
}
.nav-list .sub-menu li a:hover {
    color: var(--gold);
    background: rgba(184, 150, 104, 0.08);
    padding-left: 28px;
}
.nav-list .sub-menu li a i {
    margin-right: 10px;
    font-size: 12px;
    color: var(--gold);
    opacity: 0.6;
    width: 16px;
    text-align: center;
}
.nav-list .sub-menu .sub-menu {
    top: -8px;
    left: 100%;
    margin-left: 6px;
    transform: translateX(0);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
    transition-delay: 0s, 0.18s, 0s;
}
.nav-list .sub-menu .sub-menu::before {
    display: none;
}
.nav-list .sub-menu li .sub-arrow {
    margin-left: auto;
    font-size: 10px;
    opacity: 0.6;
    transition: var(--transition);
}
.nav-list .sub-menu li:hover .sub-arrow {
    transform: rotate(90deg);
    opacity: 1;
}
.nav-list .sub-menu li:hover>.sub-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
    transition-delay: 0s, 0s, 0s;
}
.nav-right-group {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}
.lang-switcher {
    position: relative;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    height: 36px;
    padding-bottom: 0;
}
.translateSelectLanguage {
    background: rgba(255, 255, 255, 0.06) !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    color: rgba(255, 255, 255, 0.85) !important;
    padding: 6px 30px 6px 16px !important;
    height: 36px !important;
    border-radius: 30px !important;
    font-size: 13px !important;
    font-weight: 500 !important;
    appearance: none !important;
    -webkit-appearance: none !important;
    cursor: pointer !important;
    outline: none !important;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="10" height="6" viewBox="0 0 10 6"><path d="M0 0l5 6 5-6z" fill="rgba(255,255,255,0.6)"/></svg>') !important;
    background-repeat: no-repeat !important;
    background-position: right 12px center !important;
    background-size: 10px !important;
    font-family: var(--font-sans) !important;
}
.translateSelectLanguage option {
    background: #1A1A1A !important;
    color: #fff !important;
}
.translate-select-panel {
    background: rgba(26, 26, 26, 0.98) !important;
    backdrop-filter: blur(16px) !important;
    -webkit-backdrop-filter: blur(16px) !important;
    border-radius: 14px !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5) !important;
    padding: 6px 0 !important;
    max-height: 340px !important;
    overflow-y: auto !important;
    z-index: 1001 !important;
    margin-top: 4px !important;
}
.translate-select-panel div {
    padding: 6px 18px !important;
    font-size: 14px !important;
    color: rgba(255, 255, 255, 0.7) !important;
    transition: all 0.2s !important;
    cursor: pointer !important;
    border-left: 2px solid transparent !important;
    font-family: var(--font-sans) !important;
}
.translate-select-panel div:hover {
    color: var(--gold) !important;
    background: rgba(184, 150, 104, 0.06) !important;
    border-left-color: var(--gold) !important;
}
.translate-select-panel div.selected {
    color: var(--gold) !important;
    background: rgba(184, 150, 104, 0.06) !important;
    border-left-color: var(--gold) !important;
}
.quote-btn {
    background: var(--gold);
    color: var(--white);
    border: none;
    padding: 0 24px;
    height: 38px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 30px;
    letter-spacing: 1.5px;
    flex-shrink: 0;
    line-height: 1;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    text-decoration: none;
    font-family: var(--font-sans);
}
.quote-btn:hover {
    background: var(--gold-dark);
    transform: scale(1.02);
    box-shadow: 0 6px 20px rgba(184, 150, 104, 0.3);
}
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
    flex-shrink: 0;
    padding: 4px;
}
.search-toggle {
    background: none;
    border: none;
    color: var(--white);
    font-size: 18px;
    cursor: pointer;
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
}
.search-toggle:hover {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--white);
}
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}
.search-overlay.active {
    opacity: 1;
    visibility: visible;
}
.search-overlay-inner {
    width: 90%;
    max-width: 600px;
    position: relative;
}
.search-close-btn {
    position: absolute;
    top: -50px;
    right: 0;
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 28px;
    cursor: pointer;
    transition: var(--transition);
}
.search-close-btn:hover {
    color: var(--gold);
    transform: rotate(90deg);
}
.search-form {
    display: flex;
    align-items: center;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 10px;
}
.search-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--white);
    font-size: 22px;
    font-weight: 300;
    padding: 10px 0;
    letter-spacing: 1px;
    font-family: var(--font-sans);
}
.search-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}
.search-submit {
    background: none;
    border: none;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    transition: var(--transition);
}
.search-submit:hover {
    color: var(--gold);
    transform: scale(1.1);
}
.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s;
}
.mobile-nav-overlay.active {
    display: block;
    opacity: 1;
}
.mobile-nav-drawer {
    position: fixed;
    top: 0;
    left: -100%;
    width: max-content;
    max-width: 85%;
    min-width: 280px;
    height: 100%;
    background: var(--black);
    z-index: 1001;
    transition: left 0.35s ease;
    padding: 24px 28px;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: 4px 0 40px rgba(0, 0, 0, 0.3);
    white-space: nowrap;
}
.mobile-nav-drawer.active {
    left: 0;
}
.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.mobile-nav-header .brand-logo {
    font-size: 18px;
    text-decoration: none;
    white-space: nowrap;
}
.mobile-close-btn {
    background: none;
    border: none;
    color: #aaa;
    font-size: 26px;
    cursor: pointer;
    transition: var(--transition);
}
.mobile-close-btn:hover {
    color: var(--gold);
    transform: rotate(90deg);
}
.mobile-nav-links {
    list-style: none;
}
.mobile-nav-links>li {
    margin-bottom: 2px;
    white-space: nowrap;
}
.mobile-nav-links>li>a,
.mobile-sub-menu .has-sub>a.sub-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 16px;
    font-weight: 400;
    padding: 12px 8px;
    border-radius: 4px;
    transition: var(--transition);
    width: 100%;
    white-space: nowrap;
    text-align: left;
    font-family: var(--font-sans);
}
.mobile-nav-links>li>a:hover,
.mobile-nav-links>li>a.active,
.mobile-sub-menu .has-sub>a.sub-toggle:hover {
    background: rgba(184, 150, 104, 0.12);
    color: var(--gold);
}
.mobile-nav-links>li>a .m-arrow,
.mobile-sub-menu .has-sub>a.sub-toggle .m-arrow {
    font-size: 12px;
    transition: var(--transition);
    opacity: 0.5;
    flex-shrink: 0;
}
.mobile-nav-links>li>a .m-arrow.open,
.mobile-sub-menu .has-sub>a.sub-toggle .m-arrow.open {
    transform: rotate(90deg);
}
.mobile-sub-menu {
    list-style: none;
    padding-left: 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: rgba(255, 255, 255, 0.02);
    border-radius: 6px;
    margin: 0 4px 4px 4px;
    white-space: nowrap;
}
.mobile-sub-menu.open {
    max-height: 800px;
}
.mobile-sub-menu li a {
    display: block;
    padding: 10px 12px 10px 20px;
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: var(--transition);
    border-radius: 4px;
    white-space: nowrap;
    text-align: left;
    font-family: var(--font-sans);
}
.mobile-sub-menu li a:hover {
    color: var(--gold);
    background: rgba(184, 150, 104, 0.06);
    padding-left: 24px;
}
.mobile-nav-footer {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    white-space: nowrap;
}
.mobile-nav-footer .quote-btn-mobile {
    width: 100%;
    padding: 14px;
    background: var(--gold);
    color: white;
    border: none;
    font-size: 15px;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    white-space: nowrap;
    font-family: var(--font-sans);
}
.mobile-nav-footer .quote-btn-mobile:hover {
    background: var(--gold-dark);
}
.mobile-lang-section {
    margin-top: 16px;
    padding: 12px 8px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    white-space: nowrap;
}
.mobile-lang-section .lang-label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
    letter-spacing: 2px;
    font-weight: 600;
    margin-bottom: 8px;
    white-space: nowrap;
    font-family: var(--font-sans);
}
#mobileLangContainer .translateSelectLanguage {
    width: 100% !important;
    background: rgba(255, 255, 255, 0.04) !important;
    border-color: rgba(255, 255, 255, 0.08) !important;
    color: rgba(255, 255, 255, 0.85) !important;
    padding: 8px 30px 8px 12px !important;
    height: 40px !important;
    border-radius: 8px !important;
    font-size: 14px !important;
    white-space: nowrap;
}
#mobileLangContainer .translate-select-panel {
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    min-width: unset !important;
}

/* ===== Hero Slider ===== */
.hero {
    height: 100vh;
    min-height: 100vh;
    width: 100%;
    position: relative;
    overflow: hidden;
    color: var(--white);
    background: var(--black);
}
.hero-slider {
    width: 100%;
    height: 100%;
    position: relative;
}
.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    z-index: 1;
    background: var(--black);
    transition: opacity 1.5s cubic-bezier(0.4, 0, 0.2, 1), visibility 1.5s;
    will-change: opacity, transform;
}
.hero-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}
.hero-slide video,
.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.hero-slide .fallback-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
    z-index: 1;
    background: var(--black);
}
.hero-slide .slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.45);
    z-index: 2;
}
.hero-slide .media-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
    background: var(--black);
}
.hero-slide .media-wrapper video {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-slide .media-wrapper .fallback-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    display: block;
    background: var(--black);
}
.hero-slide .media-wrapper.video-fallback .fallback-img {
    z-index: 2;
}
.hero-slide .media-wrapper.video-fallback video {
    opacity: 0;
}
.media-wrapper.video-fallback::after {
    content: '点击播放视频';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 14px;
    padding: 8px 18px;
    background: rgba(0, 0, 0, 0.45);
    border-radius: 30px;
    z-index: 9;
    pointer-events: none;
    font-family: var(--font-sans);
}

/* ------------------------------------------------------------------
   ★ 修复：图片缩小露黑边
   原因：cameraPan_2 结束在 scale(1.0) + translateX(2%)，
         cameraPan_1/6 等的 translate 幅度超过了 scale 带来的余量。
   方案：所有关键帧的 scale 一律保持在 1.20 以上，
         并把 translate 幅度限制在「多余边距」的一半以内。
         scale = s 时每侧多出的余量为 (s-1)/2，
         例如 s=1.20 → 每侧 10%，translate 最大 ±4% 仍然安全。
   ------------------------------------------------------------------ */
.hero-slide .media-wrapper .animated-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    will-change: transform;
    backface-visibility: hidden;
    transform-origin: center center;
    transform: scale(1.2);
}
@keyframes cameraPan_1 {
    0% {
        transform: scale(1.22) translateX(0%) rotateY(0deg);
    }
    100% {
        transform: scale(1.45) translateX(-3%) rotateY(6deg);
    }
}
@keyframes cameraPan_2 {
    0% {
        transform: scale(1.35) translateX(0%) rotateY(0deg);
    }
    100% {
        transform: scale(1.20) translateX(3%) rotateY(-5deg);
    }
}
@keyframes cameraPan_3 {
    0% {
        transform: scale(1.24) translateX(0%) rotateY(0deg);
    }
    100% {
        transform: scale(1.38) translateX(4%) rotateY(4deg);
    }
}
@keyframes cameraPan_4 {
    0% {
        transform: scale(1.24) translateY(0%) rotateX(0deg);
    }
    100% {
        transform: scale(1.42) translateY(4%) rotateX(4deg);
    }
}
@keyframes cameraPan_5 {
    0% {
        transform: scale(1.26) translateX(0%) rotateY(0deg) rotateZ(0deg);
    }
    100% {
        transform: scale(1.36) translateX(-3%) rotateY(5deg) rotateZ(1.5deg);
    }
}
@keyframes cameraPan_6 {
    0% {
        transform: scale(1.22) translateX(0%) rotateY(0deg);
    }
    100% {
        transform: scale(1.48) translateX(-2%) rotateY(8deg);
    }
}
.hero-slide .media-wrapper .animated-img.anim-1 {
    animation: cameraPan_1 6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}
.hero-slide .media-wrapper .animated-img.anim-2 {
    animation: cameraPan_2 6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}
.hero-slide .media-wrapper .animated-img.anim-3 {
    animation: cameraPan_3 6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}
.hero-slide .media-wrapper .animated-img.anim-4 {
    animation: cameraPan_4 6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}
.hero-slide .media-wrapper .animated-img.anim-5 {
    animation: cameraPan_5 6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}
.hero-slide .media-wrapper .animated-img.anim-6 {
    animation: cameraPan_6 6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}
.slide-content {
    position: absolute;
    top: 70%;
    left: 60px;
    transform: translateY(-50%);
    z-index: 10;
    max-width: 780px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.6s ease;
}
.hero-slide.active .slide-content {
    opacity: 1;
}
.slide-content * {
    pointer-events: auto;
}
.hero-tag {
    font-family: var(--font-sans);
    color: var(--gold);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    margin-bottom: 24px;
    opacity: 0.9;
}
.hero-title {
    font-family: var(--font-serif);
    font-size: 68px;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: 1px;
}
.hero-title .highlight {
    color: var(--gold);
}
.hero-desc {
    font-family: var(--font-sans);
    font-size: 17px;
    opacity: 0.85;
    margin-bottom: 44px;
    line-height: 1.9;
    font-weight: 300;
    max-width: 640px;
}
.hero-desc strong {
    color: var(--gold);
    font-weight: 500;
}
.hero-btns {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.btn-primary,
.btn-outline {
    font-family: var(--font-sans);
    padding: 16px 44px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border-radius: 40px;
    font-size: 14px;
    letter-spacing: 2px;
    display: inline-block;
}
.btn-primary {
    background: var(--gold);
    color: white;
}
.btn-primary:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(184, 150, 104, 0.35);
}
.btn-outline {
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    color: white;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    background: rgba(255, 255, 255, 0.05);
}
.btn-outline:hover {
    background: var(--white);
    color: var(--black);
    border-color: var(--white);
}
.hero-arrows {
    position: absolute;
    bottom: 40px;
    right: 60px;
    z-index: 20;
    display: flex;
    gap: 12px;
}
.hero-arrows button {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-arrows button:hover {
    background: var(--gold);
    border-color: var(--gold);
}
.hero-indicators {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    display: flex;
    gap: 10px;
}
.hero-indicators span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    cursor: pointer;
    transition: var(--transition);
}
.hero-indicators span.active {
    background: var(--gold);
    width: 28px;
    border-radius: 6px;
}
@media (max-width:1200px) {
    .hero-title {
        font-size: 48px;
    }
    .nav-list {
        gap: 18px;
    }
    .nav-list>li>a {
        font-size: 13px;
    }
}
@media (max-width:992px) {
    .nav-list {
        display: none;
    }
    .nav-right-group .lang-switcher {
        display: none;
    }
    .mobile-menu-toggle {
        display: block;
    }
    .slide-content {
        left: 30px;
        max-width: 90%;
    }
    .hero-title {
        font-size: 38px;
    }
}
@media (max-width:768px) {
    .container {
        padding: 0 24px;
    }
    .hero {
        min-height: 100vh;
        height: 100vh;
    }
    .slide-content {
        left: 20px;
        top: 55%;
        max-width: 90%;
    }
    .hero-title {
        font-size: 30px;
        letter-spacing: 0.5px;
    }
    .hero-desc {
        font-size: 15px;
        margin-bottom: 30px;
    }
    .hero-arrows {
        right: 20px;
        bottom: 80px;
    }
    .hero-indicators {
        bottom: 80px;
    }
    .hero-arrows button {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }
}
@media (max-width:480px) {
    .hero-title {
        font-size: 25px;
    }
    .slide-content {
        left: 16px;
        top: 58%;
    }
    .hero-arrows {
        bottom: 70px;
    }
    .hero-indicators {
        bottom: 70px;
    }
    .btn-primary,
    .btn-outline {
        padding: 12px 28px;
        font-size: 13px;
        letter-spacing: 1px;
    }
}

/* ===== Section Head ===== */
.section-head {
    text-align: center;
    margin-bottom: 48px;
    padding-top: 0;
    position: relative;
}
.section-head::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: var(--gold);
    margin: 18px auto 0;
    opacity: 0.5;
}
.section-sub {
    color: var(--gold);
    font-size: 13px;
    letter-spacing: 3px;
    font-weight: 600;
    margin-bottom: 10px;
    font-family: var(--font-sans);
    position: relative;
}
.section-title {
    font-size: 38px;
    font-weight: 700;
    color: var(--black);
    letter-spacing: 1px;
    font-family: var(--font-serif);
    line-height: 1.3;
}
.section-title.white {
    color: var(--white);
}
.section-title .gold {
    color: var(--gold);
}

/* ============================================================
   统一所有板块间距 — 均使用 var(--section-padding)
   ============================================================ */
.about-section,
.stats-section,
.case-section,
.product-section,
.cert-section,
.blog-section,
.faq-section,
.inquiry-section {
    padding: var(--section-padding);
}

/* ============================================================
   企业简介 (About Meidelin)
   ============================================================ */
.about-section {
    background: var(--black);
    position: relative;
}
.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.25;
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-content .section-head {
    text-align: left;
    margin-bottom: 24px;
}
.about-content .section-head::after {
    margin: 18px 0 0 0;
}
.about-content .section-title {
    color: var(--white);
    font-size: 36px;
}
.about-content .section-sub {
    font-size: 12px;
    letter-spacing: 3px;
    margin-bottom: 8px;
}
.about-text {
    color: rgba(255, 255, 255, 0.75);
    font-size: 16px;
    line-height: 2.0;
    font-weight: 300;
    font-family: var(--font-sans);
    margin-bottom: 20px;
}
.about-text strong {
    color: var(--gold-light);
    font-weight: 500;
}
.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 12px;
}
.about-stats .stat-item {
    display: flex;
    flex-direction: column;
}
.about-stats .stat-item .num {
    font-size: 32px;
    font-weight: 700;
    color: var(--gold);
    font-family: var(--font-serif);
    line-height: 1.2;
}
.about-stats .stat-item .label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    font-weight: 300;
    font-family: var(--font-sans);
    letter-spacing: 0.5px;
}
.about-image {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.about-image img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}
.about-image:hover img {
    transform: scale(1.02);
}
.about-image .image-badge {
    position: absolute;
    bottom: 24px;
    left: 24px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 12px 24px;
    border-radius: 30px;
    border-left: 3px solid var(--gold);
    color: var(--white);
    font-size: 13px;
    font-weight: 400;
    font-family: var(--font-sans);
    letter-spacing: 0.5px;
}
.about-image .image-badge i {
    color: var(--gold);
    margin-right: 8px;
}
@media (max-width:992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about-content .section-head {
        text-align: center;
    }
    .about-content .section-head::after {
        margin: 18px auto 0;
    }
    .about-stats {
        justify-content: center;
    }
    .about-image img {
        height: 320px;
    }
}
@media (max-width:480px) {
    .about-stats {
        gap: 24px;
        flex-wrap: wrap;
    }
    .about-stats .stat-item .num {
        font-size: 26px;
    }
    .about-image img {
        height: 240px;
    }
    .about-content .section-title {
        font-size: 28px;
    }
}

/* ===== Stats Section ===== */
.stats-section {
    background: var(--black);
    position: relative;
}
.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.3;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.stat-card {
    text-align: center;
    padding: 40px 24px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.04);
    position: relative;
}
.stat-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: var(--transition);
}
.stat-card:hover::after {
    width: 60%;
}
.stat-card:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-4px);
    border-color: rgba(184, 150, 104, 0.15);
}
.stat-num {
    font-size: 50px;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 8px;
    letter-spacing: 0;
    font-variant-numeric: tabular-nums;
    font-family: var(--font-serif);
}
.stat-num .suffix {
    font-size: 28px;
    font-weight: 600;
}
.stat-label {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 400;
    letter-spacing: 0.5px;
    font-family: var(--font-sans);
}
.stat-desc {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 4px;
    font-family: var(--font-sans);
}
@media (max-width:992px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width:480px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .stat-card {
        padding: 28px 16px;
    }
    .stat-num {
        font-size: 32px;
    }
    .stat-num .suffix {
        font-size: 20px;
    }
}

/* ============================================================
   ★ 产品推荐 Case Section（优化：JS 控制的无缝循环滑块 + 左右按钮）
   ============================================================ */
.case-section {
    background: var(--black);
    overflow: hidden;
    position: relative;
}
.case-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.2;
}

/* 外层：不裁剪，按钮可以浮在容器左右两侧 */
.case-scroll-wrapper {
    position: relative;
    width: 100%;
}

/* 视口：真正负责裁剪滚动区域（按钮放在它外面，才不会被裁掉） */
.case-viewport {
    overflow: hidden;
    padding: 10px 0;
    width: 100%;
}

/* 轨道：取消原来的 CSS 自动滚动动画，改为 JS 驱动 transform */
.case-track {
    display: flex;
    gap: 30px;
    width: max-content;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

/* ------------------------------------------------------------------
   ★ 左右切换按钮（精致小巧版）
   桌面：38×38px；平板：34×34px；手机：30×30px
   特点：细边框 + 柔和阴影 + 通透背景 + 精致图标
   ------------------------------------------------------------------ */
.case-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(26, 26, 26, 0.42);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: rgba(255, 255, 255, 0.85);
    font-size: 13px;
    cursor: pointer;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    padding: 0;
    line-height: 1;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
}
.case-arrow i {
    transition: transform 0.28s ease;
    display: block;
}
.case-arrow:hover {
    background: var(--gold);
    border-color: var(--gold-light);
    color: #fff;
    transform: translateY(-50%) scale(1.08);
    box-shadow: 0 6px 20px rgba(184, 150, 104, 0.45);
}
.case-arrow:hover i {
    transform: scale(1.05);
}
.case-arrow:active {
    transform: translateY(-50%) scale(0.94);
    box-shadow: 0 2px 8px rgba(184, 150, 104, 0.35);
}
.case-prev {
    left: -6px;
}
.case-next {
    right: -6px;
}

.case-card {
    flex: 0 0 420px;
    width: 420px;
    height: 380px;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    transition: var(--transition);
    cursor: pointer;
    flex-shrink: 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}
.case-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}
.case-card:hover img {
    transform: scale(1.05);
}
.case-card .case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    padding: 28px 24px;
    color: white;
    opacity: 0;
    transition: var(--transition);
}
.case-card:hover .case-overlay {
    opacity: 1;
}
.case-card .case-overlay,
.case-card .case-overlay .case-title,
.case-card .case-overlay .case-sub,
.case-card .case-overlay .case-badge,
.case-card .case-overlay a,
.case-card .case-overlay .case-title a,
.case-card .case-overlay .case-badge a {
    color: #ffffff !important;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.7);
}
.case-card .case-overlay a:hover {
    color: var(--gold-light) !important;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.7);
}
.case-card .case-title {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
    font-family: var(--font-serif);
}
.case-card .case-sub {
    font-size: 14px;
    opacity: 0.9;
    font-weight: 300;
    font-family: var(--font-sans);
}
.case-card .case-badge {
    display: inline-block;
    background: var(--gold);
    color: #fff !important;
    font-size: 11px;
    padding: 3px 12px;
    border-radius: 20px;
    letter-spacing: 1px;
    margin-top: 8px;
    font-family: var(--font-sans);
}
.case-card .case-badge a {
    color: #fff !important;
    text-decoration: none;
}
.case-card .case-badge a:hover {
    color: var(--gold-light) !important;
}
@media (max-width:768px) {
    .case-card .case-overlay {
        opacity: 1;
        padding: 20px 18px;
        background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    }
    .case-card {
        flex: 0 0 340px;
        width: 340px;
        height: 300px;
        border-radius: 14px;
    }
    .case-card .case-title {
        font-size: 20px;
    }
    .case-card .case-sub {
        font-size: 14px;
    }
    .case-card .case-badge {
        font-size: 11px;
        padding: 3px 14px;
    }
    /* 平板/手机端按钮：小巧精致 */
    .case-arrow {
        width: 34px;
        height: 34px;
        font-size: 11px;
        border-width: 1px;
        background: rgba(26, 26, 26, 0.5);
    }
    .case-prev {
        left: -2px;
    }
    .case-next {
        right: -2px;
    }
}
@media (max-width:480px) {
    .case-card .case-overlay {
        padding: 16px 14px;
    }
    .case-card {
        flex: 0 0 290px;
        width: 290px;
        height: 260px;
        border-radius: 12px;
    }
    .case-card .case-title {
        font-size: 17px;
    }
    .case-card .case-sub {
        font-size: 13px;
    }
    .case-card .case-badge {
        font-size: 10px;
        padding: 2px 12px;
    }
    /* 小屏手机端按钮：更加小巧 */
    .case-arrow {
        width: 30px;
        height: 30px;
        font-size: 10px;
        background: rgba(26, 26, 26, 0.55);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.22);
    }
    .case-prev {
        left: 0;
    }
    .case-next {
        right: 0;
    }
}
@media (max-width:380px) {
    .case-card {
        flex: 0 0 250px;
        width: 250px;
        height: 230px;
    }
    .case-card .case-title {
        font-size: 15px;
    }
    .case-card .case-sub {
        font-size: 12px;
    }
}
/* 注：原 @keyframes scrollCase 已删除，滚动改由 JS 控制 */

/* ===== Product Section ===== */
.product-section {
    background: var(--off-white);
    position: relative;
}
.product-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-light), transparent);
    opacity: 0.4;
}
.product-section .section-head {
    margin-bottom: 48px;
}
.product-section .section-head::after {
    width: 80px;
    height: 2.5px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    margin: 18px auto 0;
    opacity: 0.6;
}
.product-section .section-sub {
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--gold);
    font-weight: 500;
    font-family: var(--font-sans);
    margin-bottom: 8px;
}
.product-section .section-title {
    font-size: 40px;
    font-weight: 700;
    color: var(--black);
    letter-spacing: 1px;
    font-family: var(--font-serif);
    line-height: 1.25;
}
.product-section .section-title::after {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--gold);
    border-radius: 50%;
    margin-left: 14px;
    vertical-align: middle;
    opacity: 0.6;
}
.product-slider-wrap {
    overflow: hidden;
    position: relative;
    padding: 0 60px;
}
@media (max-width:992px) {
    .product-slider-wrap {
        padding: 0 20px;
    }
}
.product-slider-track {
    display: flex;
    gap: 30px;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
    padding: 8px 0;
}
.product-card {
    flex: 0 0 calc(25% - 23px);
    min-width: 260px;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    display: flex;
    flex-direction: column;
}
.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light), var(--gold));
    opacity: 0;
    transition: var(--transition);
    z-index: 2;
    border-radius: 20px 20px 0 0;
}
.product-card:hover::before {
    opacity: 1;
}
.product-card:hover {
    transform: translateY(-16px);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.08), 0 10px 30px rgba(184, 150, 104, 0.06);
    border-color: rgba(184, 150, 104, 0.15);
}
.product-card a {
    text-decoration: none;
    display: block;
}
.product-img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
    transition: var(--transition);
    background: var(--gray-light);
}
.product-card:hover .product-img {
    transform: scale(1.03);
}
.product-info {
    padding: 28px 28px 32px;
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--white);
    position: relative;
}
.product-info::after {
    content: '';
    position: absolute;
    top: 0;
    left: 28px;
    right: 28px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-pale), transparent);
    opacity: 0.3;
}
.product-name {
    font-size: 21px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--black);
    font-family: var(--font-serif);
    line-height: 1.35;
    letter-spacing: 0.5px;
}
.product-name a {
    color: var(--black);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
}
.product-name a:hover {
    color: var(--gold);
}
.product-desc {
    font-size: 15px;
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.9;
    font-weight: 300;
    font-family: var(--font-sans);
    flex: 1;
}
.product-link {
    color: var(--gold);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 0.5px;
    font-family: var(--font-sans);
    transition: var(--transition);
    margin-top: 4px;
}
.product-link i {
    transition: var(--transition);
    font-size: 12px;
}
.product-link:hover {
    color: var(--gold-dark);
    gap: 14px;
}
.product-link:hover i {
    transform: translateX(6px);
}
.product-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-light), transparent);
    opacity: 0;
    transition: var(--transition);
}
.product-card:hover::after {
    opacity: 0.6;
}
.slider-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    z-index: 5;
    padding: 0 4px;
}
.slider-controls button {
    pointer-events: auto;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--black);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-sans);
}
.slider-controls button:hover {
    background: var(--gold);
    color: white;
    transform: scale(1.06);
    box-shadow: 0 8px 32px rgba(184, 150, 104, 0.25);
}
.slider-controls button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none !important;
}
.slider-controls button:disabled:hover {
    background: rgba(255, 255, 255, 0.95);
    color: var(--black);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}
@media (max-width:1200px) {
    .product-card {
        flex: 0 0 calc(33.333% - 20px);
    }
    .product-section .section-title {
        font-size: 34px;
    }
}
@media (max-width:992px) {
    .product-card {
        flex: 0 0 calc(50% - 15px);
        min-width: 220px;
    }
    .product-img {
        height: 220px;
    }
    .product-info {
        padding: 22px 22px 26px;
    }
    .product-name {
        font-size: 19px;
    }
}
@media (max-width:768px) {
    .product-section .section-title {
        font-size: 28px;
    }
    .product-card {
        flex: 0 0 100%;
        min-width: 0;
        max-width: 400px;
        margin: 0 auto;
    }
    .product-img {
        height: 200px;
    }
    .product-info {
        padding: 20px 20px 24px;
    }
    .slider-controls button {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }
    .slider-controls {
        padding: 0 0px;
    }
}
@media (max-width:480px) {
    .product-section .section-title {
        font-size: 24px;
    }
    .product-card {
        max-width: 100%;
    }
    .product-img {
        height: 180px;
    }
    .product-info {
        padding: 16px 16px 20px;
    }
    .product-name {
        font-size: 18px;
    }
    .product-desc {
        font-size: 14px;
    }
    .slider-controls button {
        width: 36px;
        height: 36px;
        font-size: 12px;
    }
}

/* ============================================================
   资质认证 (Qualification & Certification)
   ============================================================ */
.cert-section {
    background: var(--off-white);
    position: relative;
    overflow: hidden;
}
.cert-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-light), transparent);
    opacity: 0.4;
}
.cert-section::after {
    content: '';
    position: absolute;
    top: -120px;
    right: -120px;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(184, 150, 104, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}
.cert-section .container {
    position: relative;
    z-index: 1;
}
.cert-section .section-head {
    margin-bottom: 52px;
}
.cert-section .section-head::after {
    width: 72px;
    height: 2.5px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    margin: 18px auto 0;
    opacity: 0.65;
}
.cert-section .section-sub {
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--gold);
    font-weight: 500;
    font-family: var(--font-sans);
}
.cert-section .section-title {
    font-size: 40px;
}
.cert-section .section-title::after {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--gold);
    border-radius: 50%;
    margin-left: 14px;
    vertical-align: middle;
    opacity: 0.6;
}
.cert-intro {
    text-align: center;
    max-width: 680px;
    margin: -30px auto 44px;
    font-size: 15px;
    color: var(--text-gray);
    font-weight: 300;
    line-height: 1.9;
    font-family: var(--font-sans);
}
.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.cert-item {
    background: var(--white);
    border-radius: 18px;
    padding: 36px 24px 30px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: default;
}
.cert-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0;
    transition: var(--transition);
    z-index: 2;
}
.cert-item::after {
    content: '';
    position: absolute;
    top: -40%;
    right: -40%;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(184, 150, 104, 0.08) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}
.cert-item:hover::before {
    opacity: 1;
}
.cert-item:hover::after {
    opacity: 1;
    transform: scale(1.6);
}
.cert-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(184, 150, 104, 0.08);
    border-color: rgba(184, 150, 104, 0.2);
}
.cert-icon-wrap {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--gold-pale);
    color: var(--gold-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 18px;
    transition: var(--transition);
    position: relative;
    z-index: 1;
    border: 2px solid transparent;
}
.cert-item:hover .cert-icon-wrap {
    background: var(--gold);
    color: var(--white);
    border-color: var(--gold-light);
    box-shadow: 0 8px 24px rgba(184, 150, 104, 0.3);
    transform: scale(1.05);
}
.cert-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--black);
    font-family: var(--font-serif);
    letter-spacing: 0.5px;
    margin-bottom: 6px;
    position: relative;
    z-index: 1;
    line-height: 1.4;
}
.cert-desc {
    font-size: 13px;
    color: var(--text-gray);
    font-weight: 300;
    font-family: var(--font-sans);
    line-height: 1.7;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
    flex: 1;
}
.cert-badge {
    display: inline-block;
    background: var(--gold-pale);
    color: var(--gold-dark);
    font-size: 11px;
    font-weight: 600;
    padding: 4px 16px;
    border-radius: 20px;
    letter-spacing: 1px;
    font-family: var(--font-sans);
    transition: var(--transition);
    position: relative;
    z-index: 1;
    border: 1px solid rgba(184, 150, 104, 0.15);
}
.cert-item:hover .cert-badge {
    background: var(--gold);
    color: var(--white);
    border-color: var(--gold);
}
@media (max-width:1200px) {
    .cert-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
}
@media (max-width:992px) {
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .cert-section .section-title {
        font-size: 34px;
    }
    .cert-item {
        padding: 30px 20px 24px;
    }
}
@media (max-width:768px) {
    .cert-section .section-title {
        font-size: 28px;
    }
    .cert-intro {
        font-size: 14px;
        margin-bottom: 32px;
    }
    .cert-icon-wrap {
        width: 60px;
        height: 60px;
        font-size: 24px;
        margin-bottom: 14px;
    }
    .cert-name {
        font-size: 16px;
    }
}
@media (max-width:480px) {
    .cert-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
    .cert-section .section-title {
        font-size: 22px;
    }
    .cert-item {
        padding: 22px 12px 18px;
        border-radius: 14px;
    }
    .cert-icon-wrap {
        width: 48px;
        height: 48px;
        font-size: 20px;
        margin-bottom: 10px;
    }
    .cert-name {
        font-size: 14px;
    }
    .cert-desc {
        font-size: 12px;
        margin-bottom: 10px;
    }
    .cert-badge {
        font-size: 10px;
        padding: 3px 10px;
    }
}

/* ===== Blog Section ===== */
.blog-section {
    background: var(--black);
}
.blog-section .section-head {
    margin-bottom: 48px;
}
.blog-section .section-title {
    color: var(--white);
}
.blog-section .section-head::after {
    background: var(--gold);
    opacity: 0.4;
}
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.blog-card {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.blog-card:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(184, 150, 104, 0.15);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}
.blog-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}
.blog-card .blog-body {
    padding: 24px 24px 28px;
}
.blog-card .blog-date {
    font-size: 12px;
    color: var(--gold-light);
    font-weight: 600;
    letter-spacing: 1.5px;
    font-family: var(--font-sans);
}
.blog-card h4 {
    font-size: 18px;
    margin: 8px 0 10px;
    color: var(--white);
    font-weight: 600;
    line-height: 1.55;
    font-family: var(--font-serif);
}
.blog-card p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 14px;
    line-height: 1.8;
    font-weight: 300;
}
.blog-card .read-more {
    display: inline-block;
    margin-top: 14px;
    color: var(--gold-light);
    font-weight: 600;
    text-decoration: none;
    font-size: 14px;
    font-family: var(--font-sans);
    transition: var(--transition);
}
.blog-card .read-more i {
    transition: var(--transition);
}
.blog-card .read-more:hover {
    color: var(--gold);
}
.blog-card .read-more:hover i {
    transform: translateX(4px);
}
@media (max-width:992px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width:768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
    .blog-card img {
        height: 180px;
    }
}

/* ============================================================
   常见问题 (FAQs)
   ============================================================ */
.faq-section {
    background: var(--black);
    position: relative;
}
.faq-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.2;
}
.faq-section .section-head {
    margin-bottom: 48px;
}
.faq-section .section-title {
    color: var(--white);
}
.faq-section .section-head::after {
    background: var(--gold);
    opacity: 0.4;
}
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover {
    border-color: rgba(184, 150, 104, 0.15);
    background: rgba(255, 255, 255, 0.05);
}
.faq-item.active {
    border-color: rgba(184, 150, 104, 0.25);
    background: rgba(255, 255, 255, 0.05);
}
.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    gap: 16px;
    user-select: none;
    line-height: 1.6;
}
.faq-question:hover {
    color: var(--gold-light);
}
.faq-question .faq-q-icon {
    flex-shrink: 0;
    color: var(--gold);
    font-size: 14px;
    margin-right: 8px;
}
.faq-question .faq-toggle-icon {
    flex-shrink: 0;
    color: var(--gold);
    font-size: 18px;
    transition: var(--transition);
    width: 24px;
    text-align: center;
}
.faq-item.active .faq-toggle-icon {
    transform: rotate(45deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), padding 0.3s ease;
    padding: 0 28px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    line-height: 1.9;
    font-weight: 300;
    font-family: var(--font-sans);
}
.faq-item.active .faq-answer {
    max-height: 400px;
    padding: 0 28px 24px 28px;
}
.faq-answer strong {
    color: var(--gold-light);
    font-weight: 500;
}
@media (max-width:768px) {
    .faq-question {
        padding: 16px 20px;
        font-size: 15px;
    }
    .faq-answer {
        font-size: 14px;
        padding: 0 20px;
    }
    .faq-item.active .faq-answer {
        padding: 0 20px 20px 20px;
    }
}
@media (max-width:480px) {
    .faq-question {
        padding: 14px 16px;
        font-size: 14px;
    }
    .faq-question .faq-q-icon {
        display: none;
    }
}

/* ============================================================
   询盘表单 + 联系信息
   ============================================================ */
.inquiry-section {
    background: var(--off-white);
    position: relative;
    padding: var(--section-padding);
}
.inquiry-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold-light), transparent);
    opacity: 0.3;
}
.inquiry-wrapper {
    width: 100%;
    background: var(--white);
    border-radius: 20px;
    padding: 48px 56px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.04);
}
.inquiry-wrapper .section-head {
    margin-bottom: 36px;
}
.inquiry-wrapper .section-head::after {
    margin: 14px auto 0;
}
.inquiry-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}
.contact-info-panel {
    background: var(--off-white);
    border-radius: 16px;
    padding: 32px 28px;
    border: 1px solid rgba(0, 0, 0, 0.04);
}
.contact-info-panel .panel-title {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
    line-height: 1.4;
}
.contact-info-panel .panel-sub {
    font-size: 14px;
    color: var(--text-gray);
    font-weight: 300;
    font-family: var(--font-sans);
    margin-bottom: 24px;
    line-height: 1.8;
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}
.contact-item .contact-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gold-pale);
    color: var(--gold-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    transition: var(--transition);
}
.contact-item:hover .contact-icon {
    background: var(--gold);
    color: var(--white);
}
.contact-item .contact-text {
    flex: 1;
}
.contact-item .contact-text .label {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 400;
    font-family: var(--font-sans);
    letter-spacing: 1px;
    display: block;
    margin-bottom: 2px;
}
.contact-item .contact-text .value {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
    font-family: var(--font-sans);
    word-break: break-word;
}
.contact-item .contact-text .value a {
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
}
.contact-item .contact-text .value a:hover {
    color: var(--gold);
}
.contact-social-links {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}
.contact-social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--white);
    color: var(--text-gray);
    font-size: 16px;
    transition: var(--transition);
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.contact-social-links a:hover {
    background: var(--gold);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(184, 150, 104, 0.2);
}
.inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.inquiry-form label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 5px;
    font-family: var(--font-sans);
    letter-spacing: 0.3px;
}
.inquiry-form label .required {
    color: #c0392b;
    margin-left: 2px;
}
.inquiry-form input,
.inquiry-form textarea {
    width: 100%;
    padding: 11px 16px;
    border: 1px solid #e0ddd8;
    border-radius: 10px;
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-dark);
    background: var(--white);
    transition: var(--transition);
    outline: none;
    line-height: 1.7;
}
.inquiry-form input:focus,
.inquiry-form textarea:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(184, 150, 104, 0.12);
}
.inquiry-form textarea {
    resize: vertical;
    min-height: 110px;
}
.inquiry-form .form-submit {
    text-align: center;
    margin-top: 4px;
}
.inquiry-form .submit-btn {
    background: var(--gold);
    color: var(--white);
    border: none;
    padding: 14px 56px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    letter-spacing: 2px;
    border-radius: 40px;
    cursor: pointer;
    transition: var(--transition);
}
.inquiry-form .submit-btn:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(184, 150, 104, 0.25);
}
.inquiry-form .submit-btn i {
    margin-right: 10px;
}
@media (max-width:992px) {
    .inquiry-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .contact-info-panel {
        padding: 28px 24px;
    }
    .inquiry-wrapper {
        padding: 36px 32px;
    }
}
@media (max-width:768px) {
    .inquiry-section {
        padding: 60px 0;
    }
    .inquiry-wrapper {
        padding: 28px 20px;
        border-radius: 16px;
    }
    .inquiry-form {
        gap: 14px;
    }
    .inquiry-form .submit-btn {
        padding: 12px 32px;
        font-size: 13px;
        width: 100%;
    }
    .contact-info-panel {
        padding: 24px 18px;
    }
    .contact-item .contact-text .value {
        font-size: 14px;
    }
}
@media (max-width:480px) {
    .inquiry-wrapper {
        padding: 20px 14px;
    }
    .contact-social-links a {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
}

/* ============================================================
   底部版权 (Footer)
   ============================================================ */
.site-footer {
    background: var(--black);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 40px 0 32px;
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}
.footer-copyright {
    color: rgba(255, 255, 255, 0.55);
    font-size: 13px;
    font-family: var(--font-sans);
    font-weight: 300;
    letter-spacing: 0.3px;
}
.footer-copyright a {
    color: var(--gold-light);
    text-decoration: none;
    transition: var(--transition);
}
.footer-copyright a:hover {
    color: var(--gold);
}
.footer-links {
    display: flex;
    gap: 24px;
    align-items: center;
}
.footer-links a {
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
    font-size: 13px;
    font-family: var(--font-sans);
    font-weight: 300;
    transition: var(--transition);
    letter-spacing: 0.3px;
}
.footer-links a:hover {
    color: var(--gold-light);
}
.footer-social {
    display: flex;
    gap: 16px;
    align-items: center;
}
.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.55);
    font-size: 16px;
    transition: var(--transition);
    text-decoration: none;
}
.footer-social a:hover {
    background: var(--gold);
    color: var(--white);
    transform: translateY(-2px);
}
.footer-divider {
    width: 1px;
    height: 24px;
    background: rgba(255, 255, 255, 0.08);
}
@media (max-width:768px) {
    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    .footer-social {
        gap: 12px;
    }
    .footer-divider {
        display: none;
    }
}
@media (max-width:480px) {
    .site-footer {
        padding: 32px 0 24px;
    }
    .footer-copyright {
        font-size: 12px;
    }
    .footer-links a {
        font-size: 12px;
    }
}

/* ===== 全局细节 ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--off-white);
}
::-webkit-scrollbar-thumb {
    background: var(--gold-light);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--gold);
}
::selection {
    background: var(--gold);
    color: var(--white);
}
a {
    color: var(--gold);
    transition: var(--transition);
}
a:hover {
    color: var(--gold-dark);
}
.gold-divider {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    margin: 0 auto 24px;
    border-radius: 2px;
}
.product-card,
.case-card,
.stat-card,
.cert-item {
    will-change: transform;
}
.btn-primary,
.btn-outline,
.quote-btn,
.submit-btn {
    letter-spacing: 1.5px;
    font-weight: 600;
}
@media (max-width:992px) {
    .section-title {
        font-size: 30px;
    }
    .section-head {
        margin-bottom: 36px;
    }
}
@media (max-width:768px) {
    .section-title {
        font-size: 26px;
    }
    .section-head {
        margin-bottom: 28px;
    }
    .section-sub {
        font-size: 12px;
        letter-spacing: 2px;
    }
}
@media (max-width:480px) {
    .section-title {
        font-size: 22px;
    }
    .section-head {
        margin-bottom: 24px;
    }
    .section-sub {
        font-size: 11px;
        letter-spacing: 2px;
    }
}