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

        :root {
            --yz-font-body: system-ui, -apple-system, 'Segoe UI', Roboto, 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
            --yz-text: #e4e9e7;
        }

        html {
            font-family: var(--yz-font-body);
        }

        body {
            font-family: var(--yz-font-body);
            background-color: #0a0c0b;
            color: var(--yz-text);
            line-height: 1.5;
        }

        main {
            font-family: var(--yz-font-body);
            color: var(--yz-text);
        }

        main img {
            max-width: 100%;
            height: auto;
        }

        /* 正文内强调：与周围字重、颜色完全一致，避免「像换了字体」 */
        main strong {
            font-weight: inherit;
            color: inherit;
        }

        .text-lead {
            max-width: 48rem;
            margin: 0 auto 1.75rem;
            font-size: 1.02rem;
            line-height: 1.65;
            text-align: center;
            color: var(--yz-text);
        }

        .text-lead--wide {
            max-width: 52rem;
        }

        .text-lead--tight-top {
            margin-top: -0.5rem;
        }

        .contact-intro {
            font-size: 1rem;
            line-height: 1.6;
            margin: 0 0 1rem;
            color: var(--yz-text);
        }

        .news-card-link {
            display: block;
            text-decoration: none;
            color: var(--yz-text);
        }

        .container-global-wide {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .header-navigation-premium {
            background: rgba(10, 15, 13, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(46, 125, 90, 0.25);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-flex-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            flex-wrap: wrap;
        }

        .logo-identity-heavy {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .logo-symbol-dark {
            background: #1b5e3f;
            color: #ffffff;
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            box-shadow: 0 8px 18px rgba(0, 30, 20, 0.7);
            border: 1px solid #2f8a5e;
        }

        .logo-text-premium h1 {
            font-size: 1.9rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--yz-text);
            margin: 0;
            line-height: 1.2;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
        }

        .logo-text-premium .subtitle-small {
            font-size: 0.8rem;
            color: #9ebeb0;
            font-weight: 500;
        }

        .navigation-links-ultra ul {
            display: flex;
            gap: 36px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .navigation-links-ultra a {
            text-decoration: none;
            font-weight: 600;
            color: var(--yz-text);
            font-size: 1rem;
            transition: 0.2s;
            padding-bottom: 4px;
            border-bottom: 2px solid transparent;
        }

        .navigation-links-ultra a:hover,
        .navigation-links-ultra a.active-link-bold {
            color: #8ae8c0;
            border-bottom-color: #3bb585;
        }

        .mobile-menu-trigger-dark {
            display: none;
            background: rgba(30, 40, 35, 0.8);
            border: 1px solid #2b684b;
            font-size: 1rem;
            font-weight: 600;
            font-family: var(--yz-font-body);
            color: var(--yz-text);
            cursor: pointer;
            padding: 8px 16px;
            min-height: 44px;
            border-radius: 40px;
            backdrop-filter: blur(4px);
            align-items: center;
            justify-content: center;
            gap: 8px;
            flex-shrink: 0;
            box-sizing: border-box;
        }

        .mobile-menu-trigger-dark i {
            font-size: 1.15rem;
        }

        @media (max-width: 768px) {
            .container-global-wide {
                padding-left: 16px;
                padding-right: 16px;
            }

            .header-flex-container {
                display: grid;
                grid-template-columns: minmax(0, 1fr) auto;
                grid-template-rows: auto auto;
                align-items: center;
                column-gap: 12px;
                row-gap: 0;
                padding: 12px 0;
            }

            .logo-identity-heavy {
                grid-column: 1;
                grid-row: 1;
                min-width: 0;
            }

            .mobile-menu-trigger-dark {
                grid-column: 2;
                grid-row: 1;
                display: inline-flex;
            }

            .navigation-links-ultra {
                grid-column: 1 / -1;
                grid-row: 2;
                display: none;
                width: 100%;
                margin-top: 16px;
                border-top: 1px solid #1e4f3a;
                padding-top: 16px;
            }

            .navigation-links-ultra.mobile-visible {
                display: block;
            }

            .navigation-links-ultra ul {
                flex-direction: column;
                gap: 18px;
                align-items: center;
            }

            .logo-text-premium h1 {
                font-size: clamp(0.98rem, 3.85vw, 1.22rem);
                font-weight: 600;
                line-height: 1.35;
                text-wrap: balance;
            }

            .section-block-massive {
                padding: 52px 0;
                scroll-margin-top: 72px;
            }

            .hero-section-first.section-block-massive {
                padding-top: 14px;
                padding-bottom: 32px;
                scroll-margin-top: 64px;
            }

            main > section#about.section-block-massive {
                padding-top: 28px;
                padding-bottom: 48px;
            }

            .hero-section-first .hero-prose {
                margin-top: 16px;
                margin-bottom: 12px;
            }

            .hero-section-first .hero-prose--muted {
                margin-bottom: 12px;
            }

            .hero-metric-card {
                padding: 1rem 0.65rem 0.85rem;
            }

            .section-title-glow {
                font-size: clamp(1.55rem, 5.2vw, 2.05rem);
            }

            .section-subhead-premium {
                font-size: 1.05rem;
                margin-bottom: 28px;
            }

            .two-column-power-layout {
                gap: 32px;
            }

            .image-right-background {
                min-height: 220px;
                border-radius: 28px;
            }

            .image-right-background i {
                font-size: 3rem;
                padding: 12px 20px;
            }

            .hero-section-first .hero-heading {
                font-size: clamp(1.28rem, 5vw, 1.75rem);
            }

            .hero-section-first .hero-prose,
            .hero-section-first .hero-prose--muted {
                font-size: 1.05rem;
            }

            .content-left-strong p {
                font-size: 1.05rem;
            }

            .text-lead {
                font-size: 1rem;
                margin-left: 0;
                margin-right: 0;
            }

            .contact-split-luxury {
                padding: 28px 18px;
                border-radius: 28px;
                gap: 28px;
            }

            .contact-info-side h3 {
                font-size: 1.45rem;
            }

            .contact-line-detail {
                font-size: 1rem;
                flex-wrap: wrap;
            }

            .footer-flex-row {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }

            .legal-links-group a {
                margin-right: 16px;
                margin-left: 16px;
            }

            .product-grid-luxury {
                gap: 22px;
            }

            .service-grid-cards {
                gap: 18px;
                margin-top: 28px;
            }

            .service-item-glossy {
                flex: 1 1 100%;
                max-width: 100%;
            }

            .news-grid-dark {
                gap: 20px;
            }

            .hero-metric-strip {
                grid-template-columns: 1fr;
                max-width: none;
                margin-top: 18px;
            }

            .license-showcase {
                min-height: 260px;
                border-radius: 28px;
            }

            .license-showcase-trigger {
                min-height: 220px;
            }

            .license-showcase-trigger img {
                max-height: 360px;
            }
        }

        @media (max-width: 380px) {
            .logo-text-premium h1 {
                font-size: clamp(0.9rem, 3.5vw, 1.05rem);
            }
        }

        .section-block-massive {
            padding: 80px 0;
            scroll-margin-top: 80px;
        }

        /* 首页首屏：减少顶部留白与底部留白，滚动到「公司介绍」更快衔接 */
        .hero-section-first.section-block-massive {
            padding-top: 36px;
            padding-bottom: 48px;
            scroll-margin-top: 76px;
        }

        main > section#about.section-block-massive {
            padding-top: 44px;
        }

        .section-title-glow {
            font-size: 2.3rem;
            font-weight: 700;
            color: var(--yz-text);
            margin-bottom: 18px;
            letter-spacing: -0.01em;
            position: relative;
            display: inline-block;
            text-shadow: 0 2px 8px rgba(0, 40, 20, 0.8);
        }

        .section-title-glow::after {
            content: '';
            display: block;
            width: 70px;
            height: 4px;
            background: #3bb585;
            border-radius: 4px;
            margin-top: 8px;
            box-shadow: 0 0 12px #3bb585;
        }

        .section-subhead-premium {
            color: var(--yz-text);
            font-size: 1.2rem;
            margin-bottom: 44px;
            max-width: 750px;
        }

        .two-column-power-layout {
            display: flex;
            flex-wrap: wrap;
            gap: 60px;
            align-items: center;
        }

        .content-left-strong {
            flex: 1 1 300px;
        }

        .content-left-strong p {
            font-size: 1.15rem;
            margin-bottom: 18px;
           
        }

        .certificate-block-onyx {
            background: rgba(20, 40, 30, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid #2f7857;
            border-radius: 44px;
            padding: 36px 26px;
            margin-top: 20px;
            box-shadow: 0 20px 30px -12px black;
        }

        .certificate-block-onyx i {
            font-size: 3rem;
            color: #4ad698;
        }

        .certificate-block-onyx h3 {
            font-size: 1.9rem;
            margin: 16px 0 10px;
            color: #e2f0e5;
        }

        .certificate-block-onyx ul {
            list-style: none;
            line-height: 2.4;
            padding-left: 0;
            color: #cde5da;
        }

        .image-right-background {
            flex: 1 1 320px;
            min-height: 480px;
            border-radius: 60px;
            background-image: url('../image/yz238-company-intro.jpg');
            background-size: cover;
            background-position: center 30%;
            border: 2px solid #398a63;
            box-shadow: 0 30px 40px -15px black;
            display: flex;
            align-items: flex-end;
            justify-content: center;
            padding: 20px;
        }

        .image-right-background i {
            font-size: 5rem;
            color: rgba(255, 255, 255, 0.8);
            text-shadow: 0 4px 15px black;
            background: rgba(0, 0, 0, 0.3);
            padding: 15px 30px;
            border-radius: 60px;
            backdrop-filter: blur(6px);
            border: 1px solid rgba(100, 255, 170, 0.3);
        }

        /* 产品大图卡片 */
        .product-grid-luxury {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
            margin-top: 20px;
        }

        .product-card-darkness {
            background: rgba(18, 28, 24, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid #2a6b4f;
            border-radius: 32px;
            overflow: hidden;
            box-shadow: 0 20px 30px -12px black;
            transition: transform 0.25s, border-color 0.2s;
        }

        .product-card-darkness:hover {
            transform: translateY(-6px);
            border-color: #52c797;
        }

        .product-image-wide {
            width: 100%;
            height: 210px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 5rem;
            color: #ffffffdd;
            text-shadow: 0 5px 18px black;
            border-bottom: 2px solid #266e4c;
        }

        .product-info-bottom {
            padding: 24px 20px 28px;
            text-align: center;
        }

        .product-info-bottom h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--yz-text);
        }

        .product-category-tag {
            color: #97cfb4;
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
        }

        .product-description-text {
            color: var(--yz-text);
            margin: 12px 0 14px;
            font-size: 0.98rem;
        }

        .product-price-badge {
            background: rgba(0, 30, 20, 0.7);
            color: #9cedc5;
            padding: 8px 22px;
            border-radius: 40px;
            display: inline-block;
            font-size: 0.95rem;
            font-weight: 700;
            border: 1px solid #398f64;
            backdrop-filter: blur(4px);
        }

        .service-grid-cards {
            display: flex;
            flex-wrap: wrap;
            gap: 25px;
            margin-top: 40px;
            justify-content: center;
        }

        .service-item-glossy {
            background: rgba(22, 38, 30, 0.75);
            backdrop-filter: blur(8px);
            border: 1px solid #2f7857;
            border-radius: 36px;
            padding: 32px 25px;
            flex: 1 1 200px;
            text-align: center;
            box-shadow: 0 15px 25px -8px black;
        }

        .service-item-glossy i {
            font-size: 2.8rem;
            color: #52d498;
            margin-bottom: 18px;
        }

        .service-item-glossy h4 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--yz-text);
        }

        .service-item-glossy p {
            color: var(--yz-text);
            font-size: 0.96rem;
        }

        .news-grid-dark {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }

        .news-card-solid {
            background: rgba(16, 30, 24, 0.85);
            backdrop-filter: blur(6px);
            border: 1px solid #2c6b50;
            border-radius: 32px;
            padding: 32px;
        }

        .news-date-element {
            color: #9ad4b8;
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 12px;
        }

        .news-title-head {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--yz-text);
        }

        .contact-split-luxury {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            background: rgba(10, 25, 18, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid #2f7857;
            border-radius: 60px;
            padding: 50px 45px;
            box-shadow: 0 30px 40px -20px black;
        }

        .contact-info-side h3 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--yz-text);
            margin-bottom: 20px;
        }

        .contact-line-detail {
            margin: 20px 0;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 15px;
            color: var(--yz-text);
        }

        .contact-line-detail i {
            width: 30px;
            color: #4ad498;
            font-size: 1.4rem;
        }

        .map-replacement-dark {
            flex: 2 1 320px;
            background: #1c3d30;
            border-radius: 5px;
            padding: 0px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: #c8f0dd;
            border: 0px dashed #5a9e80;
            background-image: radial-gradient(circle at 30% 40%, #276a4c 1px, transparent 1px), radial-gradient(circle at 70% 60%, #2b7a57 1px, transparent 1px);
            background-size: 40px 40px;
        }

        .map-replacement-dark i {
            font-size: 5rem;
            opacity: 0.9;
            color: #92e0be;
        }

        .button-primary-glow {
            background: #1d6b49;
            border: none;
            color: white;
            padding: 14px 34px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: inline-block;
            text-decoration: none;
            box-shadow: 0 0 20px #1d9b62, 0 8px 16px -4px black;
            transition: all 0.15s;
        }

        .button-primary-glow:hover {
            background: #2b8b60;
            box-shadow: 0 0 28px #30cf82;
        }

        .button-outline-dark {
            background: transparent;
            border: 1.5px solid #4bc28a;
            color: #c0f0db;
            box-shadow: none;
        }

        .button-outline-dark:hover {
            background: rgba(40, 90, 70, 0.5);
            border-color: #73ffc2;
        }

        .footer-deep {
            background: #0b1510;
            border-top: 2px solid #1d4d37;
            padding: 40px 0 30px;
        }

        .footer-flex-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }

        .legal-links-group a {
            color: #aad7c5;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            margin-right: 30px;
        }

        .legal-links-group a:hover {
            color: #e1ffef;
            text-decoration: underline;
        }

        .copyright-text-light {
            color: #8eb9a8;
            font-size: 0.9rem;
        }

        .disclaimer-wide {
            margin-top: 25px;
            font-size: 0.8rem;
            color: #719e8b;
            border-top: 1px solid #23583f;
            padding-top: 20px;
            text-align: center;
        }

        .hero-section-first {
            background-image: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.6)), url('../image/yz238-hero-bg.jpg');
            background-size: cover;
            background-position: center 30%;
            /* scroll 利于 LCP 与合成层，避免 fixed 拖慢首屏绘制 */
            background-attachment: scroll;
        }

        .hero-section-first.hero-section-about {
            background-image: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.6)), url('../image/yz238-about-hero.jpg');
            background-size: cover;
            background-position: center 30%;
            background-attachment: scroll;
        }

        .hero-section-first .hero-heading {
            font-size: 2rem;
            font-weight: 700;
            color: var(--yz-text);
            line-height: 1.2;
            letter-spacing: -0.02em;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
            margin: 0;
        }

        /* 与 .content-left-strong 正文完全一致：不加单独字族/字重，strong 与全站默认相同 */
        .hero-section-first .hero-prose {
            font-size: 1.15rem;
            margin: 22px 0 18px;
            color: var(--yz-text);
            line-height: 1.65;
            font-weight: 400;
        }

        .hero-section-first .hero-prose--muted {
            font-size: 1.15rem;
            margin: 0 0 18px;
            color: var(--yz-text);
            line-height: 1.65;
            font-weight: 400;
        }

        .hero-section-first .hero-prose + .hero-prose--muted {
            margin-top: 0;
        }

        .hero-section-first .hero-single-column {
            display: block;
        }

        .hero-section-first .hero-single-column .content-left-strong {
            max-width: 920px;
        }

        .hero-metric-strip {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 14px;
            margin: 28px 0 0;
            max-width: 720px;
        }

        .hero-metric-card {
            position: relative;
            text-align: center;
            padding: 1.15rem 0.85rem 1rem;
            border-radius: 18px;
            background: linear-gradient(160deg, rgba(22, 48, 36, 0.88) 0%, rgba(8, 18, 14, 0.92) 100%);
            border: 1px solid rgba(59, 181, 133, 0.38);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            overflow: hidden;
        }

        .hero-metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #1e6b4a, #3bb585, #90eac2);
            opacity: 0.95;
        }

        .hero-metric-value {
            font-size: clamp(1.85rem, 4.2vw, 2.4rem);
            font-weight: 700;
            line-height: 1.05;
            letter-spacing: -0.04em;
            font-variant-numeric: tabular-nums;
            color: var(--yz-text);
            text-shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
        }

        .hero-metric-suffix {
            font-size: 0.58em;
            font-weight: 700;
            margin-left: 0.06em;
            vertical-align: 0.12em;
            color: var(--yz-text);
        }

        .hero-metric-unit {
            font-size: 0.48em;
            font-weight: 700;
            margin-left: 0.12em;
            vertical-align: 0.28em;
            color: var(--yz-text);
            letter-spacing: 0;
        }

        .hero-metric-label {
            margin-top: 0.55rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--yz-text);
            letter-spacing: 0.03em;
        }

        .hero-metric-hint {
            margin-top: 0.28rem;
            font-size: 0.76rem;
            font-weight: 500;
            color: var(--yz-text);
            opacity: 0.92;
            line-height: 1.35;
        }

        .license-showcase {
            flex: 1 1 320px;
            min-height: 380px;
            border-radius: 60px;
            border: 2px solid #398a63;
            box-shadow: 0 30px 40px -15px black;
            overflow: hidden;
            background: rgba(0, 0, 0, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 16px;
        }

        .license-showcase--compact {
            min-height: 280px;
        }

        .license-showcase-trigger {
            display: block;
            width: 100%;
            height: 100%;
            min-height: 320px;
            border: none;
            background: transparent;
            cursor: zoom-in;
            padding: 0;
            border-radius: 48px;
            position: relative;
            font: inherit;
            color: inherit;
            text-align: center;
        }

        .license-showcase--compact .license-showcase-trigger {
            min-height: 220px;
        }

        .license-showcase-trigger img {
            width: 100%;
            height: auto;
            max-height: 480px;
            object-fit: contain;
            border-radius: 12px;
            display: block;
            margin: 0 auto;
        }

        .license-showcase--compact .license-showcase-trigger img {
            max-height: 360px;
        }

        .license-showcase-hint {
            position: absolute;
            bottom: 16px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0, 0, 0, 0.72);
            color: #c0f0dc;
            padding: 10px 22px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 600;
            border: 1px solid rgba(82, 199, 151, 0.45);
            pointer-events: none;
            white-space: nowrap;
        }

        .license-lightbox {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 1000;
            align-items: center;
            justify-content: center;
            padding: 24px;
        }

        .license-lightbox.is-open {
            display: flex;
        }

        .license-lightbox__backdrop {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.88);
            cursor: pointer;
        }

        .license-lightbox__panel {
            position: relative;
            z-index: 1;
            max-width: min(96vw, 1200px);
            max-height: 94vh;
        }

        .license-lightbox__img {
            max-width: 100%;
            max-height: 90vh;
            width: auto;
            height: auto;
            object-fit: contain;
            border-radius: 8px;
            box-shadow: 0 20px 60px black;
            display: block;
        }

        .license-lightbox__close {
            position: absolute;
            top: -10px;
            right: -10px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 2px solid #398a63;
            background: #0a1510;
            color: #c0f0dc;
            font-size: 1.6rem;
            line-height: 1;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
        }