/* roulang page: index */
:root {
            --adt-primary: #FF5C1A;
            --adt-primary-rgb: 255, 92, 26;
            --adt-accent: #00C9A7;
            --adt-accent-rgb: 0, 201, 167;
            --adt-dark: #0B1A2E;
            --adt-darker: #070F1A;
            --adt-mid: #132D4A;
            --adt-glass-bg: rgba(255, 255, 255, 0.035);
            --adt-glass-border: rgba(255, 255, 255, 0.07);
            --adt-glass-border-hover: rgba(255, 92, 26, 0.25);
            --adt-text-primary: #FFFFFF;
            --adt-text-body: rgba(255, 255, 255, 0.82);
            --adt-text-muted: rgba(255, 255, 255, 0.55);
            --adt-text-card: rgba(255, 255, 255, 0.75);
            --adt-glow-primary: rgba(255, 92, 26, 0.5);
            --adt-glow-accent: rgba(0, 201, 167, 0.4);
            --adt-radius-card: 16px;
            --adt-radius-btn: 10px;
            --adt-radius-img: 12px;
            --adt-radius-sm: 10px;
            --adt-shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --adt-shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.45), 0 0 30px rgba(255, 92, 26, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.1);
            --adt-shadow-btn: 0 0 20px rgba(255, 92, 26, 0.35), 0 4px 16px rgba(255, 92, 26, 0.2);
            --adt-shadow-btn-hover: 0 0 35px rgba(255, 92, 26, 0.55), 0 0 60px rgba(255, 92, 26, 0.25), 0 8px 24px rgba(0, 0, 0, 0.4);
            --adt-transition-card: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --adt-transition-btn: 0.25s ease-out;
            --adt-font-cn: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
            --adt-font-en: "Inter", "SF Pro Display", system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--adt-font-cn);
            background-color: var(--adt-dark);
            color: var(--adt-text-body);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        a:focus-visible {
            outline: 2px solid var(--adt-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            padding: 0;
        }
        button:focus-visible {
            outline: 2px solid var(--adt-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 768px) {
            .container-custom {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        /* ========== 导航 ========== */
        #nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            background: transparent;
            transition: background 0.3s ease, box-shadow 0.3s ease, height 0.3s ease;
            border-bottom: 1px solid transparent;
        }
        #nav.scrolled {
            background: rgba(11, 26, 46, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
        }
        #nav .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: #FFFFFF;
            white-space: nowrap;
            z-index: 1001;
            text-decoration: none;
        }
        #nav .nav-logo svg {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }
        #nav .nav-links {
            display: none;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
            align-items: center;
        }
        @media (min-width: 768px) {
            #nav .nav-links {
                display: flex;
            }
            #nav {
                padding: 0 40px;
            }
            #nav .hamburger-btn {
                display: none;
            }
        }
        #nav .nav-links a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            transition: color 0.25s ease;
            text-decoration: none;
            white-space: nowrap;
        }
        #nav .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--adt-primary);
            box-shadow: 0 0 8px var(--adt-glow-primary);
            border-radius: 2px;
            transition: width 0.3s ease;
        }
        #nav .nav-links a:hover,
        #nav .nav-links a.active {
            color: #FFFFFF;
        }
        #nav .nav-links a:hover::after,
        #nav .nav-links a.active::after {
            width: 100%;
        }
        #nav .nav-links a.active {
            color: var(--adt-primary);
        }
        .hamburger-btn {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            z-index: 1001;
            background: none;
            border: none;
            cursor: pointer;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
        }
        .hamburger-btn span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .hamburger-btn.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger-btn.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger-btn.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        @media (min-width: 768px) {
            .hamburger-btn {
                display: none;
            }
        }

        /* 移动端覆盖层 */
        #mobile-overlay {
            position: fixed;
            inset: 0;
            background: rgba(11, 26, 46, 0.97);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        #mobile-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        #mobile-overlay a {
            font-size: 1.3rem;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.85);
            transition: color 0.25s ease;
            text-decoration: none;
            padding: 8px 16px;
            min-height: 44px;
            display: flex;
            align-items: center;
        }
        #mobile-overlay a:hover,
        #mobile-overlay a:active {
            color: var(--adt-primary);
        }

        /* ========== Hero ========== */
        #hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            background: var(--adt-dark);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        #hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(11, 26, 46, 0.55) 0%, rgba(11, 26, 46, 0.85) 70%, rgba(11, 26, 46, 0.95) 100%);
            z-index: 1;
        }
        #hero .hero-glow-orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(100px);
            opacity: 0.25;
            z-index: 0;
            pointer-events: none;
        }
        #hero .hero-glow-orb.orb-1 {
            width: 500px;
            height: 500px;
            background: rgba(255, 92, 26, 0.3);
            top: -15%;
            right: -10%;
            animation: orbFloat1 8s ease-in-out infinite;
        }
        #hero .hero-glow-orb.orb-2 {
            width: 380px;
            height: 380px;
            background: rgba(0, 201, 167, 0.22);
            bottom: -12%;
            left: -8%;
            animation: orbFloat2 10s ease-in-out infinite;
        }
        #hero .hero-light-trail {
            position: absolute;
            width: 3px;
            height: 180px;
            background: linear-gradient(to bottom, transparent, rgba(255, 92, 26, 0.5), rgba(255, 140, 66, 0.3), transparent);
            border-radius: 50%;
            z-index: 0;
            pointer-events: none;
            opacity: 0.5;
            animation: trailSweep 6s ease-in-out infinite;
        }
        #hero .hero-light-trail.trail-1 {
            top: 18%;
            left: 28%;
            transform: rotate(-25deg);
            animation-delay: 0s;
        }
        #hero .hero-light-trail.trail-2 {
            top: 22%;
            right: 25%;
            transform: rotate(20deg);
            animation-delay: 3s;
            height: 140px;
            background: linear-gradient(to bottom, transparent, rgba(0, 201, 167, 0.4), rgba(0, 201, 167, 0.2), transparent);
        }
        @keyframes orbFloat1 {
            0%,
            100% {
                transform: translate(0, 0);
            }
            33% {
                transform: translate(-60px, 40px);
            }
            66% {
                transform: translate(30px, -30px);
            }
        }
        @keyframes orbFloat2 {
            0%,
            100% {
                transform: translate(0, 0);
            }
            33% {
                transform: translate(50px, -35px);
            }
            66% {
                transform: translate(-40px, 25px);
            }
        }
        @keyframes trailSweep {
            0%,
            100% {
                opacity: 0.35;
                transform: rotate(-25deg) scaleY(1);
            }
            50% {
                opacity: 0.7;
                transform: rotate(-25deg) scaleY(1.5);
            }
        }
        #hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 0 24px;
        }
        #hero h1 {
            font-size: clamp(2.2rem, 5vw, 4.2rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #FFFFFF;
            line-height: 1.2;
            margin: 0 0 18px 0;
            background: linear-gradient(180deg, #FFFFFF 0%, #FFE0CC 55%, #FFFFFF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
        }
        #hero .hero-subtitle {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: rgba(255, 255, 255, 0.75);
            max-width: 580px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        #hero .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }
        #hero .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 36px;
            font-size: 1rem;
            font-weight: 600;
            color: #FFFFFF;
            background: var(--adt-primary);
            border-radius: var(--adt-radius-btn);
            box-shadow: var(--adt-shadow-btn);
            transition: all var(--adt-transition-btn);
            text-decoration: none;
            min-height: 48px;
            min-width: 140px;
            border: none;
            cursor: pointer;
        }
        #hero .btn-primary:hover {
            transform: scale(1.04);
            box-shadow: var(--adt-shadow-btn-hover);
            background: #FF6E30;
        }
        #hero .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 36px;
            font-size: 1rem;
            font-weight: 600;
            color: #FFFFFF;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.55);
            border-radius: var(--adt-radius-btn);
            transition: all var(--adt-transition-btn);
            text-decoration: none;
            min-height: 48px;
            min-width: 140px;
            cursor: pointer;
        }
        #hero .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.85);
            transform: scale(1.04);
        }
        #hero .scroll-indicator {
            position: absolute;
            bottom: 32px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            opacity: 0.7;
            animation: bounceArrow 2s ease-in-out infinite;
            pointer-events: none;
        }
        #hero .scroll-indicator span {
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 0.06em;
        }
        #hero .scroll-indicator i {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.6);
        }
        @keyframes bounceArrow {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }
        @media (max-width: 767px) {
            #hero {
                min-height: 90vh;
            }
            #hero .hero-btns {
                flex-direction: column;
                gap: 12px;
            }
            #hero .btn-primary,
            #hero .btn-outline {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }
            #hero .hero-glow-orb.orb-1 {
                width: 300px;
                height: 300px;
                top: -10%;
                right: -25%;
            }
            #hero .hero-glow-orb.orb-2 {
                width: 240px;
                height: 240px;
                bottom: -8%;
                left: -20%;
            }
            #hero .hero-light-trail {
                display: none;
            }
        }

        /* ========== 通用区块样式 ========== */
        .section-padding {
            padding: 100px 0;
        }
        @media (max-width: 767px) {
            .section-padding {
                padding: 60px 0;
            }
        }
        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 700;
            color: #FFFFFF;
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            text-align: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

        /* ========== 玻璃拟态卡片 ========== */
        .glass-card {
            background: var(--adt-glass-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--adt-glass-border);
            border-radius: var(--adt-radius-card);
            box-shadow: var(--adt-shadow-card);
            transition: all var(--adt-transition-card);
            padding: 32px;
            height: 100%;
        }
        .glass-card:hover {
            transform: translateY(-6px);
            border-color: var(--adt-glass-border-hover);
            box-shadow: var(--adt-shadow-card-hover);
        }
        @media (max-width: 767px) {
            .glass-card {
                padding: 24px;
            }
        }

        /* ========== 优势卡片图标容器 ========== */
        .icon-circle {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .icon-circle.orange {
            background: rgba(255, 92, 26, 0.15);
            color: var(--adt-primary);
        }
        .icon-circle.teal {
            background: rgba(0, 201, 167, 0.15);
            color: var(--adt-accent);
        }

        /* ========== 数据亮点数字 ========== */
        .stat-number {
            font-family: var(--adt-font-en);
            font-weight: 900;
            font-size: clamp(2.5rem, 5vw, 4.5rem);
            background: linear-gradient(135deg, #FF5C1A 0%, #FF8C42 50%, #FFC49B 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.05em;
            margin-top: 4px;
        }
        .stat-unit {
            font-family: var(--adt-font-en);
            font-size: 1.2rem;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.7);
            margin-left: 2px;
        }
        @media (max-width: 767px) {
            .stat-number {
                font-size: clamp(2rem, 8vw, 3.2rem);
            }
        }

        /* ========== 服务横向卡片 ========== */
        .service-card {
            display: flex;
            flex-direction: row;
            background: var(--adt-glass-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--adt-glass-border);
            border-radius: var(--adt-radius-card);
            box-shadow: var(--adt-shadow-card);
            transition: all var(--adt-transition-card);
            overflow: hidden;
        }
        .service-card:hover {
            transform: scale(1.02);
            border-color: var(--adt-glass-border-hover);
            box-shadow: var(--adt-shadow-card-hover);
        }
        .service-card .service-img {
            width: 40%;
            flex-shrink: 0;
            min-height: 260px;
            object-fit: cover;
            border-radius: 12px 0 0 12px;
        }
        .service-card .service-body {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }
        .service-card .service-body h3 {
            font-size: clamp(1.2rem, 1.8vw, 1.45rem);
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 10px;
        }
        .service-card .service-body p {
            color: var(--adt-text-card);
            line-height: 1.7;
            margin-bottom: 14px;
            font-size: 0.95rem;
        }
        .service-card .service-body .service-link {
            color: var(--adt-primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.25s ease;
            text-decoration: none;
        }
        .service-card .service-body .service-link:hover {
            gap: 10px;
        }
        @media (max-width: 767px) {
            .service-card {
                flex-direction: column;
            }
            .service-card .service-img {
                width: 100%;
                min-height: 200px;
                max-height: 240px;
                border-radius: 12px 12px 0 0;
            }
            .service-card .service-body {
                padding: 20px;
            }
        }

        /* ========== 时间线 ========== */
        .timeline-wrapper {
            position: relative;
            padding: 0 20px;
        }
        .timeline-line {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: 0;
            bottom: 0;
            width: 1px;
            background: rgba(255, 255, 255, 0.2);
            z-index: 0;
        }
        .timeline-item {
            position: relative;
            display: flex;
            align-items: flex-start;
            margin-bottom: 40px;
            z-index: 1;
        }
        .timeline-item:nth-child(odd) {
            flex-direction: row;
            padding-right: calc(50% + 48px);
            text-align: right;
            justify-content: flex-end;
        }
        .timeline-item:nth-child(even) {
            flex-direction: row-reverse;
            padding-left: calc(50% + 48px);
            text-align: left;
            justify-content: flex-start;
        }
        .timeline-dot {
            position: absolute;
            left: 50%;
            top: 6px;
            transform: translateX(-50%);
            width: 14px;
            height: 14px;
            border-radius: 50%;
            z-index: 2;
            flex-shrink: 0;
        }
        .timeline-dot.completed {
            background: var(--adt-primary);
            box-shadow: 0 0 14px rgba(255, 92, 26, 0.55);
        }
        .timeline-dot.in-progress {
            background: transparent;
            border: 2px solid var(--adt-primary);
            box-shadow: 0 0 8px rgba(255, 92, 26, 0.3);
        }
        .timeline-card {
            background: var(--adt-glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--adt-glass-border);
            border-radius: 12px;
            padding: 20px 24px;
            max-width: 440px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
        }
        .timeline-year {
            font-weight: 700;
            color: var(--adt-primary);
            font-size: 1.05rem;
            margin-bottom: 4px;
            font-family: var(--adt-font-en);
        }
        .timeline-title {
            font-weight: 600;
            color: #FFFFFF;
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .timeline-desc {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            line-height: 1.5;
        }
        @media (max-width: 767px) {
            .timeline-line {
                left: 20px;
                transform: none;
            }
            .timeline-item,
            .timeline-item:nth-child(odd),
            .timeline-item:nth-child(even) {
                flex-direction: row;
                padding-left: 48px;
                padding-right: 0;
                text-align: left;
                justify-content: flex-start;
            }
            .timeline-dot {
                left: 20px;
                transform: translateX(-50%);
            }
            .timeline-card {
                max-width: 100%;
            }
        }

        /* ========== FAQ ========== */
        #faq {
            background: rgba(255, 255, 255, 0.015);
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.025);
            border-radius: var(--adt-radius-sm);
            margin-bottom: 10px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.04);
            transition: border-color 0.3s ease;
        }
        .faq-item.open {
            border-color: rgba(255, 92, 26, 0.2);
        }
        .faq-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            user-select: none;
            gap: 12px;
            min-height: 56px;
            transition: background 0.2s ease;
        }
        .faq-header:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-header h3 {
            font-weight: 600;
            font-size: 1.02rem;
            color: #FFFFFF;
            margin: 0;
            flex: 1;
            line-height: 1.4;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.6);
            transition: transform 0.4s ease;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--adt-primary);
        }
        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease-in-out, padding 0.4s ease;
        }
        .faq-body-inner {
            padding: 0 22px 18px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            font-size: 0.93rem;
        }
        .faq-item.open .faq-body {
            max-height: 300px;
        }
        @media (max-width: 767px) {
            .faq-header {
                padding: 16px 18px;
            }
            .faq-body-inner {
                padding: 0 18px 16px;
            }
        }

        /* ========== CTA ========== */
        #cta {
            background: linear-gradient(180deg, #0B1A2E 0%, #132D4A 100%);
            position: relative;
            overflow: hidden;
        }
        #cta::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(255, 92, 26, 0.12) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        #cta .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        #cta h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        #cta .cta-subtitle {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        #cta .btn-cta-large {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 52px;
            font-size: 1.15rem;
            font-weight: 700;
            color: #FFFFFF;
            background: var(--adt-primary);
            border-radius: var(--adt-radius-btn);
            box-shadow: var(--adt-shadow-btn-hover);
            transition: all var(--adt-transition-btn);
            text-decoration: none;
            min-height: 54px;
            min-width: 200px;
            cursor: pointer;
            border: none;
        }
        #cta .btn-cta-large:hover {
            transform: scale(1.05);
            box-shadow: 0 0 50px rgba(255, 92, 26, 0.6), 0 0 80px rgba(255, 92, 26, 0.3), 0 10px 28px rgba(0, 0, 0, 0.5);
            background: #FF6E30;
        }
        #cta .cta-note {
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
        }
        @media (max-width: 767px) {
            #cta .btn-cta-large {
                width: 100%;
                max-width: 320px;
                padding: 15px 36px;
                font-size: 1.05rem;
            }
        }

        /* ========== 页脚 ========== */
        #footer {
            background: var(--adt-darker);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 64px;
        }
        #footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1.3fr 1.1fr;
            gap: 36px;
            padding-bottom: 40px;
        }
        @media (max-width: 1023px) {
            #footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 767px) {
            #footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        #footer .footer-logo-area {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        #footer .footer-logo-area .flogo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 700;
            color: #FFFFFF;
        }
        #footer .footer-logo-area .flogo svg {
            width: 30px;
            height: 30px;
        }
        #footer .footer-logo-area .fslogan {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            line-height: 1.5;
        }
        #footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        #footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        #footer ul li {
            margin-bottom: 8px;
        }
        #footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: color 0.2s ease;
            text-decoration: none;
        }
        #footer ul li a:hover {
            color: var(--adt-primary);
        }
        #footer .contact-info p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            margin-bottom: 6px;
            line-height: 1.5;
        }
        #footer .social-icons {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        #footer .social-icons a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: all 0.25s ease;
            text-decoration: none;
            min-width: 40px;
            min-height: 40px;
        }
        #footer .social-icons a:hover {
            background: var(--adt-primary);
            color: #FFFFFF;
            transform: translateY(-3px);
        }
        #footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
            color: rgba(255, 255, 255, 0.3);
            font-size: 0.8rem;
            margin-top: 0;
        }

        /* ========== 分隔线工具 ========== */
        .divider-light {
            border: none;
            height: 1px;
            background: rgba(255, 255, 255, 0.06);
            margin: 0;
        }

        /* ========== 通用按钮样式（页面内复用） ========== */
        .btn-sm-link {
            color: var(--adt-primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap 0.25s ease;
            text-decoration: none;
            cursor: pointer;
        }
        .btn-sm-link:hover {
            gap: 9px;
        }

        /* ========== 可访问性跳转链接 ========== */
        .skip-link {
            position: absolute;
            top: -100px;
            left: 16px;
            background: var(--adt-primary);
            color: #fff;
            padding: 10px 16px;
            border-radius: 6px;
            z-index: 9999;
            font-weight: 600;
            text-decoration: none;
            transition: top 0.2s ease;
        }
        .skip-link:focus {
            top: 16px;
        }