/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --hd-primary: #3377cc;
    --hd-secondary: #55aaff;
    --hd-accent: #00cc88;
    --hd-bg-light: #f8fbff;
    --hd-bg-medium: #f0f7ff;
    --hd-bg-white: #ffffff;
    --hd-card: rgba(255, 255, 255, 0.95);
    --hd-border: rgba(51, 119, 204, 0.2);
    --hd-text: #1a2a3a;
    --hd-text-dim: #556677;
    --hd-shadow: 0 20px 60px rgba(51, 119, 204, 0.15);
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--hd-bg-light);
    color: var(--hd-text);
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

/* ============================================
   FULLPAGE CONTAINER
   ============================================ */
.fullpage {
    position: relative;
    width: 100%;
    height: 100vh;
    z-index: 10;
}

.section {
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    height: calc(100vh - 126px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(60px) scale(0.95);
    transition: all 0.85s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 0;
    overflow: hidden;
}

.section.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    z-index: 1;
}

.section-wrapper {
    width: 100%;
    max-width: 1500px;
    padding: 30px 40px;
    position: relative;
    z-index: 10;
    max-height: calc(100vh - 126px);
    overflow-y: auto;
    overflow-x: hidden;
}

.section-wrapper::-webkit-scrollbar {
    width: 6px;
}

.section-wrapper::-webkit-scrollbar-track {
    background: rgba(51, 119, 204, 0.05);
}

.section-wrapper::-webkit-scrollbar-thumb {
    background: rgba(51, 119, 204, 0.3);
    border-radius: 3px;
}

.section-wrapper::-webkit-scrollbar-thumb:hover {
    background: rgba(51, 119, 204, 0.5);
}

/* ============================================
   PROGRESS INDICATOR
   ============================================ */
.progress-indicator {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: rgba(51, 119, 204, 0.1);
    z-index: 1000;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--hd-primary), var(--hd-secondary), var(--hd-accent));
    width: 0;
    transition: width 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.progress-steps {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 20px;
    z-index: 1000;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    opacity: 0.4;
    transition: all 0.3s ease;
}

.progress-step.active {
    opacity: 1;
}

.progress-step:hover {
    opacity: 0.8;
}

.step-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--hd-primary);
    transform: scale(0.8);
    transition: all 0.3s ease;
}

.progress-step.active .step-dot {
    transform: scale(1.3);
    box-shadow: 0 0 20px rgba(51, 119, 204, 0.5);
}

.step-label {
    display: none;
}

/* ============================================
  SECTION 1: BANNER SLIDER - CINEMATIC IMMERSIVE
  ============================================ */
.banner-section {
    background: #000000;
    overflow: hidden;
    padding: 0;
}

.banner-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    max-height: calc(100vh - 126px);
    overflow: hidden;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 1.4s ease;
    cursor: pointer;
    overflow: hidden;
}

.banner-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 10;
}

.banner-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center center;
    background: #000000;
    transform: scale(1.08);
    transition: transform 10s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

.banner-slide.active .banner-image {
    transform: scale(1);
    animation: ken-burns-cinematic 14s ease-out forwards;
}

@keyframes ken-burns-cinematic {
    0% {
        transform: scale(1.12) translate(0, 0);
    }
    50% {
        transform: scale(1.06) translate(-1%, -0.5%);
    }
    100% {
        transform: scale(1) translate(0, 0);
    }
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: linear-gradient(180deg,
    rgba(0, 0, 0, 0.18) 0%,
    rgba(0, 0, 0, 0.06) 35%,
    rgba(0, 0, 0, 0.06) 65%,
    rgba(0, 0, 0, 0.28) 100%);
    pointer-events: none;
}

.banner-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center,
    transparent 0%,
    rgba(0, 0, 0, 0.15) 100%);
    opacity: 0.6;
}

.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 64px;
    height: 120px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    cursor: pointer;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    padding: 0;
    outline: none;
}

.banner-arrow span {
    font-size: 3.6rem;
    color: rgba(255, 255, 255, 0.92);
    line-height: 1;
    font-weight: 200;
    text-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    transition: all 0.4s ease;
}

.banner-arrow:hover {
    background: rgba(255, 255, 255, 0.22);
    border-color: rgba(255, 255, 255, 0.35);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4), inset 0 0 30px rgba(255, 255, 255, 0.1);
}

.banner-arrow:hover span {
    color: white;
    text-shadow: 0 6px 24px rgba(0, 0, 0, 0.7);
    transform: scale(1.15);
}

.banner-arrow:active {
    transform: translateY(-50%) scale(0.92);
    background: rgba(255, 255, 255, 0.3);
}

.banner-prev {
    left: 60px;
    border-radius: 0 16px 16px 0;
}

.banner-next {
    right: 60px;
    border-radius: 16px 0 0 16px;
}

.banner-indicators {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 16px;
    z-index: 100;
    padding: 14px 24px;
    background: rgba(0, 0, 0, 0.28);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 60px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.banner-indicator {
    width: 52px;
    height: 3.5px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: none;
    position: relative;
    overflow: hidden;
}

.banner-indicator::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: linear-gradient(90deg,
    var(--hd-primary) 0%,
    var(--hd-accent) 50%,
    var(--hd-secondary) 100%);
    border-radius: 2px;
    transition: width 0.6s ease;
}

.banner-indicator:hover {
    background: rgba(255, 255, 255, 0.65);
    transform: scaleY(1.4);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.banner-indicator.active {
    background: rgba(255, 255, 255, 0.2);
    width: 68px;
    box-shadow: 0 0 24px rgba(51, 119, 204, 0.6),
    0 0 40px rgba(0, 204, 136, 0.3);
}

.banner-indicator.active::before {
    width: 100%;
    animation: progress-bar-cinematic 6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes progress-bar-cinematic {
    from { width: 0; }
    to { width: 100%; }
}

/* ============================================
   平板设备适配 (1024px - 1200px)
   ============================================ */
@media screen and (max-width: 1200px) {
    .banner-arrow {
        width: 56px;
        height: 105px;
    }

    .banner-arrow span {
        font-size: 3.2rem;
    }

    .banner-prev {
        left: 40px;
    }

    .banner-next {
        right: 40px;
    }

    .banner-indicators {
        bottom: 28px;
        gap: 14px;
        padding: 12px 20px;
    }

    .banner-indicator {
        width: 46px;
        height: 3px;
    }

    .banner-indicator.active {
        width: 60px;
    }
}

/* ============================================
   小平板/大手机横屏 (768px - 900px)
   ============================================ */
@media screen and (max-width: 900px) {
    .banner-arrow {
        width: 48px;
        height: 90px;
    }

    .banner-arrow span {
        font-size: 2.8rem;
    }

    .banner-prev {
        left: 28px;
    }

    .banner-next {
        right: 28px;
    }

    .banner-indicators {
        bottom: 24px;
        gap: 12px;
        padding: 10px 18px;
    }

    .banner-indicator {
        width: 40px;
        height: 2.8px;
    }

    .banner-indicator.active {
        width: 52px;
    }
}

/* ============================================
   手机竖屏 - 等比例缩放核心方案 (最大768px)
   ============================================ */
@media screen and (max-width: 768px) {
    .banner-section {
        background: #000000;
    }

    .banner-wrapper {
        max-height: calc(100vh - 126px);
    }

    .banner-image {
        object-fit: contain;
        object-position: center center;
        background: #000000;
        transform: scale(1.04);
    }

    .banner-slide.active .banner-image {
        transform: scale(1);
        animation: ken-burns-mobile 12s ease-out forwards;
    }

    @keyframes ken-burns-mobile {
        0% {
            transform: scale(1.08);
        }
        100% {
            transform: scale(1);
        }
    }

    .banner-overlay {
        background: linear-gradient(180deg,
        rgba(0, 0, 0, 0.22) 0%,
        rgba(0, 0, 0, 0.1) 50%,
        rgba(0, 0, 0, 0.38) 100%);
    }

    .banner-arrow {
        width: 44px;
        height: 85px;
        background: rgba(255, 255, 255, 0.15);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .banner-arrow span {
        font-size: 2.4rem;
    }

    .banner-arrow:hover {
        background: rgba(255, 255, 255, 0.28);
        transform: translateY(-50%) scale(1.08);
    }

    .banner-arrow:active {
        transform: translateY(-50%) scale(0.9);
    }

    .banner-prev {
        left: 16px;
        border-radius: 0 18px 18px 0;
    }

    .banner-next {
        right: 16px;
        border-radius: 18px 0 0 18px;
    }

    .banner-indicators {
        bottom: 22px;
        gap: 10px;
        padding: 10px 16px;
        background: rgba(0, 0, 0, 0.35);
        border-radius: 50px;
    }

    .banner-indicator {
        width: 34px;
        height: 2.5px;
    }

    .banner-indicator:hover {
        transform: scaleY(1.3);
    }

    .banner-indicator.active {
        width: 46px;
        box-shadow: 0 0 20px rgba(51, 119, 204, 0.5);
    }
}

/* ============================================
   小屏手机优化 (480px - 768px)
   ============================================ */
@media screen and (max-width: 600px) {
    .banner-image {
        object-fit: contain;
        object-position: center center;
        transform: scale(1.02);
    }

    .banner-slide.active .banner-image {
        transform: scale(1);
    }

    .banner-arrow {
        width: 38px;
        height: 75px;
        background: rgba(255, 255, 255, 0.18);
    }

    .banner-arrow span {
        font-size: 2rem;
    }

    .banner-prev {
        left: 12px;
    }

    .banner-next {
        right: 12px;
    }

    .banner-indicators {
        bottom: 18px;
        gap: 8px;
        padding: 8px 14px;
    }

    .banner-indicator {
        width: 28px;
        height: 2.2px;
    }

    .banner-indicator.active {
        width: 38px;
    }
}

/* ============================================
   超小屏手机终极适配（iPhone SE等）
   ============================================ */
@media screen and (max-width: 480px) {
    .banner-wrapper {
        max-height: calc(100vh - 126px);
    }

    .banner-image {
        object-fit: contain;
        object-position: center center;
        transform: scale(1);
        background: #000000;
    }

    .banner-slide.active .banner-image {
        transform: scale(1);
    }

    .banner-overlay {
        background: linear-gradient(180deg,
        rgba(0, 0, 0, 0.28) 0%,
        rgba(0, 0, 0, 0.12) 50%,
        rgba(0, 0, 0, 0.45) 100%);
    }

    .banner-arrow {
        width: 34px;
        height: 68px;
        background: rgba(255, 255, 255, 0.2);
        border: 1px solid rgba(255, 255, 255, 0.25);
    }

    .banner-arrow span {
        font-size: 1.7rem;
    }

    .banner-arrow:hover {
        background: rgba(255, 255, 255, 0.35);
    }

    .banner-arrow:active {
        transform: translateY(-50%) scale(0.88);
    }

    .banner-prev {
        left: 10px;
        border-radius: 0 16px 16px 0;
    }

    .banner-next {
        right: 10px;
        border-radius: 16px 0 0 16px;
    }

    .banner-indicators {
        bottom: 16px;
        gap: 7px;
        padding: 7px 12px;
        background: rgba(0, 0, 0, 0.4);
        border-radius: 45px;
        border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .banner-indicator {
        width: 24px;
        height: 2px;
    }

    .banner-indicator:hover {
        transform: scaleY(1.2);
    }

    .banner-indicator.active {
        width: 32px;
        box-shadow: 0 0 16px rgba(51, 119, 204, 0.45);
    }
}

/* ============================================
   iPhone SE等超小屏 (最大375px)
   ============================================ */
@media screen and (max-width: 375px) {
    .banner-image {
        object-fit: contain;
        object-position: center center;
    }

    .banner-arrow {
        width: 30px;
        height: 60px;
        background: rgba(255, 255, 255, 0.22);
    }

    .banner-arrow span {
        font-size: 1.5rem;
    }

    .banner-prev {
        left: 8px;
    }

    .banner-next {
        right: 8px;
    }

    .banner-indicators {
        bottom: 14px;
        gap: 6px;
        padding: 6px 10px;
    }

    .banner-indicator {
        width: 20px;
        height: 1.8px;
    }

    .banner-indicator.active {
        width: 28px;
    }
}

/* ============================================
   横屏模式特殊处理
   ============================================ */
@media screen and (max-height: 500px) and (orientation: landscape) {
    .banner-wrapper {
        max-height: calc(100vh - 126px);
    }

    .banner-image {
        object-fit: contain;
        object-position: center center;
    }

    .banner-overlay {
        background: linear-gradient(90deg,
        rgba(0, 0, 0, 0.28) 0%,
        rgba(0, 0, 0, 0.12) 50%,
        rgba(0, 0, 0, 0.28) 100%);
    }

    .banner-indicators {
        bottom: 12px;
        padding: 6px 12px;
    }

    .banner-arrow {
        width: 34px;
        height: 65px;
    }

    .banner-arrow span {
        font-size: 1.6rem;
    }
}

/* ============================================
   高分辨率屏幕优化
   ============================================ */
@media screen and (min-resolution: 192dpi) {
    .banner-image {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }

    .banner-arrow {
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
    }

    .banner-indicators {
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }
}

/* ============================================
   触摸设备专项优化
   ============================================ */
@media (hover: none) and (pointer: coarse) {
    .banner-arrow {
        background: rgba(255, 255, 255, 0.2);
        border: 1px solid rgba(255, 255, 255, 0.28);
        -webkit-tap-highlight-color: transparent;
    }

    .banner-arrow:active {
        background: rgba(255, 255, 255, 0.42);
        transform: translateY(-50%) scale(0.88);
    }

    .banner-indicator:hover {
        transform: none;
    }

    .banner-indicator:active {
        transform: scaleY(1.25);
        background: rgba(255, 255, 255, 0.75);
    }

    .banner-slide {
        -webkit-tap-highlight-color: transparent;
    }
}

/* ============================================
   深色模式支持
   ============================================ */
@media (prefers-color-scheme: dark) {
    .banner-overlay {
        background: linear-gradient(180deg,
        rgba(0, 0, 0, 0.22) 0%,
        rgba(0, 0, 0, 0.1) 40%,
        rgba(0, 0, 0, 0.1) 60%,
        rgba(0, 0, 0, 0.32) 100%);
    }
}

/* ============================================
   SECTION 2: PRODUCTS - PREMIUM GLASSMORPHISM
   ============================================ */
.products-section {
    background: linear-gradient(135deg, #f5f9ff 0%, #e8f2ff 50%, #f0f7ff 100%);
    position: relative;
}

.products-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(51, 119, 204, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.products-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 204, 136, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.section-header {
    text-align: center;
    margin-bottom: 35px;
    position: relative;
    z-index: 10;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 24px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(51, 119, 204, 0.15);
    border-radius: 50px;
    font-size: 0.72rem;
    color: var(--hd-primary);
    margin-bottom: 16px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 700;
    box-shadow: 0 8px 32px rgba(51, 119, 204, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.section-tag::before {
    content: '◆';
    font-size: 0.6rem;
    color: var(--hd-accent);
    animation: tag-pulse 2s ease-in-out infinite;
}

@keyframes tag-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.85); }
}

.section-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(51, 119, 204, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border-color: rgba(51, 119, 204, 0.3);
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 900;
    color: #1a1a1a;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #1a3a5c 0%, #3377cc 50%, #00cc88 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.03em;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--hd-primary), var(--hd-accent), transparent);
    border-radius: 2px;
}

.section-desc {
    font-size: 0.95rem;
    color: #5a6b7d;
    line-height: 1.7;
    max-width: 650px;
    margin: 18px auto 0;
    font-weight: 400;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    max-width: 1600px;
    margin: 0 auto;
    padding: 10px 5px;
    position: relative;
    z-index: 10;
}

.product-card {
    perspective: 1500px;
    width: 100%;
    cursor: pointer;
}

.product-card-inner {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 8px 32px rgba(51, 119, 204, 0.08),
    0 2px 8px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    height: 100%;
    transform-style: preserve-3d;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
    rgba(51, 119, 204, 0.1) 0%,
    transparent 50%,
    rgba(0, 204, 136, 0.08) 100%);
    border-radius: 24px;
    opacity: 0;
    transition: opacity 0.6s ease;
    z-index: 0;
    pointer-events: none;
}

.product-card:hover::before {
    opacity: 1;
}

.product-card:hover .product-card-inner {
    transform: translateY(-12px) rotateX(6deg) scale(1.02);
    box-shadow: 0 24px 64px rgba(51, 119, 204, 0.2),
    0 12px 32px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 1);
    border-color: rgba(51, 119, 204, 0.3);
}

.product-visual {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fbff 0%, #eef5ff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.product-card:hover .product-visual {
    background: linear-gradient(135deg, #e8f2ff 0%, #d8ebff 100%);
}

.product-bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%,
    rgba(51, 119, 204, 0.08) 0%,
    transparent 60%);
    transition: all 0.6s ease;
}

.product-card:hover .product-bg-gradient {
    background: radial-gradient(circle at 50% 50%,
    rgba(51, 119, 204, 0.15) 0%,
    rgba(0, 204, 136, 0.1) 50%,
    transparent 70%);
    animation: gradient-shift 3s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.product-image {
    width: 78%;
    height: 78%;
    /*object-fit: contain;*/
    border-radius: 24px;
    filter: drop-shadow(0 12px 32px rgba(51, 119, 204, 0.15));
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: center center;
    position: relative;
    z-index: 2;
}

.product-card:hover .product-image {
    transform: scale(1) translateY(-6px) rotate(-2deg);
    filter: drop-shadow(0 20px 48px rgba(51, 119, 204, 0.3));
}

.icon-placeholder {
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    opacity: 0.6;
    filter: grayscale(0.4);
    position: relative;
    z-index: 2;
    transition: all 0.6s ease;
}

.product-card:hover .icon-placeholder {
    opacity: 1;
    transform: scale(1.2) rotate(-10deg);
    filter: grayscale(0) drop-shadow(0 16px 40px rgba(51, 119, 204, 0.3));
}

.product-glow-effect {
    position: absolute;
    bottom: -60%;
    left: 50%;
    width: 220%;
    height: 220%;
    background: radial-gradient(circle,
    rgba(255, 255, 255, 0.5) 0%,
    rgba(51, 119, 204, 0.15) 30%,
    transparent 70%);
    opacity: 0;
    transform: translateX(-50%);
    transition: opacity 0.6s ease;
    pointer-events: none;
    z-index: 1;
}

.product-card:hover .product-glow-effect {
    opacity: 1;
    animation: glow-rotate 4s linear infinite;
}

@keyframes glow-rotate {
    0% { transform: translateX(-50%) rotate(0deg); }
    100% { transform: translateX(-50%) rotate(360deg); }
}

.product-content {
    padding: 20px 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 2;
    flex: 1;
    border-top: 1px solid rgba(255, 255, 255, 0.6);
}

.product-name {
    font-size: 1rem;
    font-weight: 800;
    color: #1a2a3a;
    line-height: 1.4;
    letter-spacing: 0.02em;
    margin: 0;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

.product-name::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--hd-primary), var(--hd-accent));
    border-radius: 1px;
    transition: transform 0.4s ease;
}

.product-card:hover .product-name {
    color: var(--hd-primary);
    transform: translateY(-2px);
}

.product-card:hover .product-name::after {
    transform: translateX(-50%) scaleX(1);
}

.product-desc {
    font-size: 0.75rem;
    color: #6b7d8f;
    line-height: 1.6;
    margin: 0;
    text-align: center;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: all 0.3s ease;
}

.product-card:hover .product-desc {
    color: #5a6b7d;
}

/* ============================================
   响应式适配：平板设备（4 列）
   ============================================ */
@media screen and (max-width: 1400px) {
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 20px;
    }

    .product-visual {
        height: 165px;
    }
}

/* ============================================
   响应式适配：小屏笔记本/大平板（3 列）
   ============================================ */
@media screen and (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 18px;
    }

    .product-visual {
        height: 155px;
    }

    .product-content {
        padding: 18px 15px;
    }

    .section-title {
        font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    }

    .section-wrapper {
        padding: 28px 35px;
    }
}

/* ============================================
   响应式适配：平板横屏/小屏（2 列）
   ============================================ */
@media screen and (max-width: 900px) {
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 16px;
    }

    .product-visual {
        height: 145px;
    }

    .product-name {
        font-size: 0.92rem;
    }

    .product-desc {
        font-size: 0.7rem;
    }

    .section-wrapper {
        padding: 24px 22px;
    }
}

/* ============================================
   响应式适配：手机横屏（2 列紧凑）
   ============================================ */
@media screen and (max-width: 600px) {
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 12px;
    }

    .product-card-inner {
        border-radius: 20px;
    }

    .product-visual {
        height: 120px;
    }

    .product-image {
        width: 82%;
        height: 82%;
    }

    .product-content {
        padding: 14px 12px;
        gap: 6px;
    }

    .product-name {
        font-size: 0.82rem;
    }

    .product-desc {
        font-size: 0.65rem;
        -webkit-line-clamp: 2;
    }

    .section-tag {
        padding: 6px 18px;
        font-size: 0.65rem;
    }

    .section-title {
        font-size: clamp(1.3rem, 3vw, 1.6rem);
    }

    .section-desc {
        font-size: 0.78rem;
    }

    .section-wrapper {
        padding: 20px 16px;
    }
}

/* ============================================
   响应式适配：手机竖屏（单列横向布局）
   ============================================ */
@media screen and (max-width: 480px) {
    .products-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .product-card-inner {
        flex-direction: row;
        align-items: center;
        text-align: left;
        border-radius: 18px;
    }

    .product-visual {
        width: 110px;
        height: 110px;
        flex-shrink: 0;
        border-radius: 18px 0 0 18px;
    }

    .product-bg-gradient {
        border-radius: 18px 0 0 18px;
    }

    .product-image {
        width: 75%;
        height: 75%;
    }

    .product-content {
        flex: 1;
        padding: 16px 16px;
        align-items: flex-start;
        gap: 6px;
        border-top: none;
        border-left: 1px solid rgba(255, 255, 255, 0.6);
    }

    .product-name {
        font-size: 0.95rem;
        text-align: left;
    }

    .product-name::after {
        left: 0;
        transform: scaleX(0);
        transform-origin: left;
    }

    .product-card:hover .product-name::after {
        transform: scaleX(1);
    }

    .product-desc {
        font-size: 0.72rem;
        text-align: left;
        -webkit-line-clamp: 2;
    }

    .section-wrapper {
        padding: 18px 14px;
    }
}

/* ============================================
   超小屏幕优化（iPhone SE 等）
   ============================================ */
@media screen and (max-width: 375px) {
    .product-visual {
        width: 95px;
        height: 95px;
    }

    .product-image {
        width: 70%;
        height: 70%;
    }

    .product-content {
        padding: 14px 14px;
    }

    .product-name {
        font-size: 0.88rem;
    }

    .product-desc {
        font-size: 0.68rem;
    }
}

/* ============================================
   高分辨率屏幕优化（Retina / 4K）
   ============================================ */
@media screen and (min-resolution: 192dpi) {
    .product-bg-gradient {
        image-rendering: -webkit-optimize-contrast;
    }

    .product-image {
        image-rendering: -webkit-optimize-contrast;
        filter: drop-shadow(0 12px 32px rgba(51, 119, 204, 0.18))
        contrast(1.05);
    }

    .product-card-inner {
        box-shadow: 0 8px 32px rgba(51, 119, 204, 0.1),
        0 2px 8px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.95);
    }
}

/* ============================================
  SECTION 3: SOLUTIONS - PREMIUM INTERACTIVE MOSAIC
  ============================================ */
.solutions-section {
   background: linear-gradient(135deg, #f0f7ff 0%, #e8f4ff 50%, #f5f9ff 100%);
   /*position: relative;*/
   overflow: hidden;
}

.solutions-section::before {
    content: '';
    position: absolute;
    top: -25%;
    right: -15%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(51, 119, 204, 0.08) 0%, transparent 70%);
    animation: float-orb 20s ease-in-out infinite;
    pointer-events: none;
}

.solutions-section::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -12%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 204, 136, 0.06) 0%, transparent 70%);
    animation: float-orb 25s ease-in-out infinite reverse;
    pointer-events: none;
}

@keyframes float-orb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.solutions-mosaic {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 230px);
    gap: 20px;
    position: relative;
    z-index: 10;
}

.solution-card {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.7);
    box-shadow: 0 8px 32px rgba(51, 119, 204, 0.08),
    0 2px 8px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.solution-card:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.solution-card:nth-child(2) { grid-column: span 2; }
.solution-card:nth-child(3) { grid-column: span 1; }
.solution-card:nth-child(4) { grid-column: span 1; }

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
    rgba(51, 119, 204, 0.1) 0%,
    transparent 50%,
    rgba(0, 204, 136, 0.08) 100%);
    opacity: 0;
    transition: opacity 0.6s ease;
    z-index: 0;
    pointer-events: none;
}

.solution-card:hover::before {
    opacity: 1;
}

.solution-card:hover {
    transform: translateY(-12px) scale(1.025);
    box-shadow: 0 24px 64px rgba(51, 119, 204, 0.2),
    0 12px 32px rgba(0, 0, 0, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 1);
    border-color: rgba(51, 119, 204, 0.3);
}

.solution-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    opacity: 0.15;
    z-index: 0;
}

.solution-card:nth-child(1) .solution-bg {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 50%, #c44569 100%);
    opacity: 0.18;
}

.solution-card:nth-child(2) .solution-bg {
    background: linear-gradient(135deg, #a55eea 0%, #8854d0 50%, #778ca3 100%);
    opacity: 0.16;
}

.solution-card:nth-child(3) .solution-bg {
    background: linear-gradient(135deg, #26de81 0%, #20bf6b 50%, #0fb9b1 100%);
    opacity: 0.14;
}

.solution-card:nth-child(4) .solution-bg {
    background: linear-gradient(135deg, #45aaf2 0%, #2d98da 50%, #3867d6 100%);
    opacity: 0.15;
}

.solution-card:hover .solution-bg {
    transform: scale(1.15);
    opacity: 0.24;
}

.solution-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg,
    transparent 0%,
    rgba(0, 0, 0, 0.03) 50%,
    rgba(0, 0, 0, 0.1) 100%);
    z-index: 1;
    pointer-events: none;
}

.solution-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 24px;
    z-index: 2;
    color: #1a2a3a;
}

.solution-icon {
    font-size: 2rem;
    margin-bottom: 1px;
    display: inline-block;
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    filter: drop-shadow(0 6px 16px rgba(51, 119, 204, 0.25));
    animation: icon-float 3s ease-in-out infinite;
}

@keyframes icon-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.solution-card:hover .solution-icon {
    transform: scale(1.25) rotate(10deg);
    filter: drop-shadow(0 10px 28px rgba(51, 119, 204, 0.4));
    animation-play-state: paused;
}

.solution-title {
    font-size: 1.22rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: #1a2a3a;
    transition: all 0.4s ease;
    letter-spacing: 0.02em;
}

.solution-card:nth-child(1) .solution-title {
    font-size: 1.6rem;
    font-weight: 900;
}

.solution-card:hover .solution-title {
    color: var(--hd-primary);
    transform: translateX(5px);
}

.solution-desc {
    font-size: 0.82rem;
    color: #5a6b7d;
    opacity: 0.95;
    line-height: 1.65;
    margin: 0;
    transition: all 0.3s ease;
}

.solution-card:hover .solution-desc {
    color: #4a5b6d;
    opacity: 1;
}

.solution-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.solution-tag {
    padding: 6px 14px;
    background: linear-gradient(135deg,
    rgba(51, 119, 204, 0.12) 0%,
    rgba(0, 204, 136, 0.08) 100%);
    border: 1px solid rgba(51, 119, 204, 0.18);
    border-radius: 16px;
    font-size: 0.72rem;
    color: var(--hd-primary);
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.solution-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent);
    transition: left 0.6s ease;
}

.solution-tag:hover {
    background: linear-gradient(135deg,
    rgba(51, 119, 204, 0.2) 0%,
    rgba(0, 204, 136, 0.15) 100%);
    border-color: rgba(51, 119, 204, 0.35);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(51, 119, 204, 0.2);
}

.solution-tag:hover::before {
    left: 100%;
}

/* ============================================
   平板设备适配 (1024px - 1200px)
   ============================================ */
@media screen and (max-width: 1200px) {
    .solutions-mosaic {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
        gap: 18px;
    }

    .solution-card:nth-child(1) {
        grid-column: span 2;
        grid-row: span 1;
        min-height: 290px;
    }

    .solution-card:nth-child(2) {
        grid-column: span 2;
        min-height: 210px;
    }

    .solution-card:nth-child(3),
    .solution-card:nth-child(4) {
        grid-column: span 1;
        min-height: 190px;
    }

    .solution-content {
        padding: 22px;
    }

    .solution-icon {
        font-size: 2.2rem;
    }

    .solution-title {
        font-size: 1.12rem;
    }

    .solution-card:nth-child(1) .solution-title {
        font-size: 1.45rem;
    }

    .solution-desc {
        font-size: 0.78rem;
    }

    .solution-tag {
        padding: 5px 13px;
        font-size: 0.7rem;
    }
}

/* ============================================
   小平板/大手机横屏 (768px - 900px)
   ============================================ */
@media screen and (max-width: 900px) {
    .solutions-section::before,
    .solutions-section::after {
        display: none;
    }

    .solutions-mosaic {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .solution-card:nth-child(1) {
        grid-column: span 2;
        min-height: 270px;
    }

    .solution-card:nth-child(2) {
        grid-column: span 2;
        min-height: 200px;
    }

    .solution-card:nth-child(3),
    .solution-card:nth-child(4) {
        grid-column: span 1;
        min-height: 180px;
    }

    .solution-content {
        padding: 20px;
    }

    .solution-icon {
        font-size: 2rem;
    }

    .solution-title {
        font-size: 1.08rem;
    }

    .solution-card:nth-child(1) .solution-title {
        font-size: 1.35rem;
    }

    .solution-desc {
        font-size: 0.75rem;
    }

    .solution-tag {
        padding: 5px 12px;
        font-size: 0.68rem;
    }
}

/* ============================================
   手机竖屏 - 单列布局 (最大768px)
   ============================================ */
@media screen and (max-width: 768px) {
    .solutions-mosaic {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .solution-card {
        grid-column: span 1 !important;
        grid-row: span 1 !important;
        min-height: 165px;
    }

    .solution-card:nth-child(1) {
        min-height: 210px;
    }

    .solution-content {
        padding: 18px;
    }

    .solution-icon {
        font-size: 1.85rem;
        margin-bottom: 10px;
    }

    .solution-title {
        font-size: 1.05rem;
    }

    .solution-card:nth-child(1) .solution-title {
        font-size: 1.25rem;
    }

    .solution-desc {
        font-size: 0.72rem;
        line-height: 1.6;
    }

    .solution-tags {
        gap: 6px;
        margin-top: 10px;
    }

    .solution-tag {
        padding: 5px 11px;
        font-size: 0.66rem;
    }
}

/* ============================================
   小屏手机优化 (480px - 768px)
   ============================================ */
@media screen and (max-width: 600px) {
    .solutions-mosaic {
        gap: 12px;
    }

    .solution-card {
        min-height: 155px;
        border-radius: 20px;
    }

    .solution-card:nth-child(1) {
        min-height: 195px;
    }

    .solution-content {
        padding: 16px;
    }

    .solution-icon {
        font-size: 1.7rem;
    }

    .solution-title {
        font-size: 0.98rem;
    }

    .solution-card:nth-child(1) .solution-title {
        font-size: 1.18rem;
    }

    .solution-desc {
        font-size: 0.69rem;
    }

    .solution-tag {
        padding: 4px 10px;
        font-size: 0.63rem;
    }
}

/* ============================================
   超小屏手机终极适配 (最大480px)
   ============================================ */
@media screen and (max-width: 480px) {
    .solution-card {
        min-height: 150px;
        border-radius: 18px;
    }

    .solution-card:nth-child(1) {
        min-height: 185px;
    }

    .solution-content {
        padding: 15px;
    }

    .solution-icon {
        font-size: 1.6rem;
        margin-bottom: 8px;
    }

    .solution-title {
        font-size: 0.92rem;
    }

    .solution-card:nth-child(1) .solution-title {
        font-size: 1.12rem;
    }

    .solution-desc {
        font-size: 0.66rem;
        line-height: 1.55;
    }

    .solution-tags {
        gap: 5px;
        margin-top: 8px;
    }

    .solution-tag {
        padding: 4px 9px;
        font-size: 0.61rem;
        border-radius: 14px;
    }
}

/* ============================================
   iPhone SE等超小屏 (最大375px)
   ============================================ */
@media screen and (max-width: 375px) {
    .solution-card {
        min-height: 145px;
    }

    .solution-card:nth-child(1) {
        min-height: 180px;
    }

    .solution-content {
        padding: 14px;
    }

    .solution-icon {
        font-size: 1.5rem;
    }

    .solution-title {
        font-size: 0.88rem;
    }

    .solution-card:nth-child(1) .solution-title {
        font-size: 1.08rem;
    }

    .solution-desc {
        font-size: 0.63rem;
    }

    .solution-tag {
        padding: 3px 8px;
        font-size: 0.59rem;
    }
}

/* ============================================
   SECTION 4: CASES - TIMELINE
   ============================================ */
.cases-section {
    background: linear-gradient(180deg, var(--hd-bg-white) 0%, var(--hd-bg-light) 100%);
}

.cases-timeline {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 18px;
    position: relative;
}

.cases-timeline::before {
    content: '';
    position: absolute;
    top: 48px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--hd-primary), var(--hd-accent), var(--hd-secondary));
    border-radius: 2px;
}

.case-item {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 1;
}

.case-dot {
    width: 16px;
    height: 16px;
    background: var(--hd-bg-white);
    border: 3px solid var(--hd-primary);
    border-radius: 50%;
    margin: 0 auto 16px;
    position: relative;
    top: 40px;
    transition: all 0.4s ease;
    cursor: pointer;
}

.case-item:hover .case-dot {
    transform: scale(1.35);
    border-color: var(--hd-accent);
    box-shadow: 0 0 24px rgba(0, 204, 136, 0.35);
}

.case-card {
    background: var(--hd-card);
    border: 2px solid #f0f5fa;
    border-radius: 18px;
    padding: 22px 18px;
    cursor: pointer;
    transition: all 0.4s ease;
    box-shadow: 0 8px 32px rgba(51, 119, 204, 0.07);
}

.case-card:hover {
    transform: translateY(-12px);
    border-color: var(--hd-primary);
    box-shadow: var(--hd-shadow);
}

.case-year {
    display: inline-block;
    padding: 5px 14px;
    background: linear-gradient(135deg, var(--hd-primary), var(--hd-accent));
    color: white;
    border-radius: 14px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.case-icon {
    font-size: 2.4rem;
    margin-bottom: 12px;
}

.case-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--hd-text);
    margin-bottom: 8px;
}

.case-desc {
    font-size: 0.78rem;
    color: var(--hd-text-dim);
    line-height: 1.55;
}

/* ============================================
   SECTION 5: SOFTWARE - 3D MOCKUP
   ============================================ */
.software-section {
    background: linear-gradient(135deg, var(--hd-bg-light) 0%, var(--hd-bg-medium) 100%);
}

.software-main {
    display: grid;
    grid-template-columns: 5fr 3fr 2fr;
    align-items: center;
    gap: 35px;
    max-width: 1400px;
    margin: 0 auto;
}

.software-mockup {
    position: relative;
    perspective: 1500px;
    flex-shrink: 0;
    z-index: 10;
}

.phone-single {
    position: relative;
    width: 260px;
    height: 520px;
    margin: 0 auto;
}

.phone-frame {
    position: relative;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 
        0 30px 80px rgba(0, 0, 0, 0.4),
        0 0 0 2px rgba(255, 255, 255, 0.1),
        inset 0 0 20px rgba(255, 255, 255, 0.05);
    transition: all 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
    overflow: hidden;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        transparent 50%, 
        rgba(255, 255, 255, 0.05) 100%);
    border-radius: 40px;
    pointer-events: none;
}

.software-mockup:hover .phone-frame {
    transform: translateY(-12px) scale(1.03);
    box-shadow: 
        0 40px 100px rgba(51, 119, 204, 0.3),
        0 0 60px rgba(0, 204, 136, 0.2),
        0 0 0 2px rgba(255, 255, 255, 0.2),
        inset 0 0 30px rgba(255, 255, 255, 0.08);
}

/* 中间圆孔摄像头（打孔屏） */
.phone-camera-hole {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 22px;
    height: 22px;
    background: #0a0a0a;
    border-radius: 50%;
    z-index: 100;
    box-shadow: 
        0 0 0 2px rgba(40, 40, 40, 0.8),
        0 0 0 4px rgba(20, 20, 20, 0.5),
        inset 0 0 8px rgba(0, 0, 0, 0.8);
}

.phone-camera-hole::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: radial-gradient(circle, #1a1a2e 0%, #0f0f1e 50%, #000000 100%);
    border-radius: 50%;
    box-shadow: 
        0 0 4px rgba(100, 150, 255, 0.3),
        inset 0 0 3px rgba(0, 0, 0, 0.9);
}

.phone-camera-hole::after {
    content: '';
    position: absolute;
    top: 3px;
    right: 4px;
    width: 4px;
    height: 4px;
    background: rgba(100, 150, 255, 0.4);
    border-radius: 50%;
    filter: blur(1px);
}

/* 屏幕内容区 */
.phone-screen-content {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    border-radius: 30px;
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* 状态栏 */
.screen-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px 6px;
    color: white;
    font-size: 0.65rem;
    font-weight: 600;
    z-index: 50;
}

.status-time {
    letter-spacing: 0.5px;
}

.status-icons {
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-icons svg {
    fill: currentColor;
    opacity: 0.95;
    transition: all 0.3s ease;
}

.icon-signal {
    color: white;
}

.icon-wifi {
    color: white;
}

.icon-battery {
    color: white;
}

/* APP主界面 */
.app-main-interface {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 10px 16px;
    overflow: hidden;
}

/* APP头部 */
.app-header {
    text-align: center;
    margin-bottom: 16px;
}

.app-logo-wrapper {
    width: 64px;
    height: 64px;
    margin: 0 auto 10px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.app-logo-icon {
    font-size: 2.2rem;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.1));
}

.app-title {
    font-size: 1.3rem;
    font-weight: 800;
    color: white;
    margin-bottom: 4px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.app-subtitle {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

/* 快捷操作 */
.app-quick-actions {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 16px;
}

.quick-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 10px 6px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.quick-action:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
}

.action-icon {
    font-size: 1.4rem;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.15));
}

.action-label {
    font-size: 0.6rem;
    color: white;
    font-weight: 600;
}

/* 预览区域 */
.app-preview {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.preview-screen {
    width: 100%;
    height: 100px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.preview-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
}

.preview-text {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.preview-effect {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}

/* 底部导航 */
.app-bottom-nav {
    display: flex;
    justify-content: space-around;
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.nav-item.active {
    opacity: 1;
}

.nav-item:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.nav-icon {
    font-size: 1.2rem;
}

.nav-label {
    font-size: 0.58rem;
    color: white;
    font-weight: 600;
}

/* Home键 */
.phone-home-button {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    z-index: 100;
}

/* 光效装饰 */
.phone-glow-effect {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, 
        rgba(51, 119, 204, 0.3) 0%, 
        rgba(0, 204, 136, 0.2) 40%, 
        transparent 70%);
    border-radius: 50%;
    z-index: -1;
    animation: glowPulse 4s ease-in-out infinite;
    pointer-events: none;
}

@keyframes glowPulse {
    0%, 100% { 
        opacity: 0.6; 
        transform: translate(-50%, -50%) scale(1);
    }
    50% { 
        opacity: 0.9; 
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.qr-section {
    position: relative;
    background: var(--hd-card);
    padding: 24px;
    border-radius: 20px;
    box-shadow: 0 12px 40px rgba(51, 119, 204, 0.12),
                inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.6);
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    text-align: center;
    flex-shrink: 0;
    z-index: 10;
}

.qr-section:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 18px 56px rgba(51, 119, 204, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 1);
}

.qr-code {
    width: 180px;
    height: 180px;
    background: linear-gradient(135deg, #f5f5f5, #e8e8e8);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    padding: 8px;
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 6px;
}

.qr-text {
    font-size: 0.78rem;
    color: var(--hd-text);
    font-weight: 600;
    margin-bottom: 10px;
}

.qr-platforms {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 12px;
}

.platform-badge {
    padding: 5px 12px;
    background: linear-gradient(135deg, var(--hd-primary), var(--hd-accent));
    color: white;
    border-radius: 20px;
    font-size: 0.65rem;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(51, 119, 204, 0.2);
}

.software-content {
    flex: 1;
}

.software-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 204, 136, 0.1);
    border: 1px solid rgba(0, 204, 136, 0.25);
    border-radius: 50px;
    font-size: 0.7rem;
    color: var(--hd-accent);
    margin-bottom: 14px;
    font-weight: 600;
}

.software-title {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 800;
    color: var(--hd-text);
    margin-bottom: 10px;
    line-height: 1.2;
}

.software-slogan {
    font-size: 0.95rem;
    color: var(--hd-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.software-desc {
    font-size: 0.8rem;
    color: var(--hd-text-dim);
    line-height: 1.65;
    margin-bottom: 18px;
}

.software-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.software-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--hd-card);
    border: 1px solid var(--hd-border);
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(51, 119, 204, 0.04);
}

.software-feature:hover {
    transform: translateX(6px) translateY(-2px);
    border-color: var(--hd-accent);
    box-shadow: 0 8px 24px rgba(0, 204, 136, 0.15);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(248, 252, 255, 0.95));
}

.feature-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--hd-primary), var(--hd-accent));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(51, 119, 204, 0.18);
}

.feature-text {
    flex: 1;
}

.feature-title {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--hd-text);
    margin-bottom: 2px;
}

.feature-desc {
    font-size: 0.68rem;
    color: var(--hd-text-dim);
    line-height: 1.4;
}

/* ============================================
   SECTION 6: CONTACT - DATA VISUALIZATION
   ============================================ */
.contact-section {
    background: linear-gradient(180deg, var(--hd-bg-white) 0%, var(--hd-bg-light) 100%);
}

.contact-main {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    gap: 40px;
    min-height: 320px;
}

.contact-content {
    flex: 1;
}

.contact-tag {
    display: inline-block;
    padding: 8px 18px;
    background: rgba(51, 119, 204, 0.1);
    border: 1px solid var(--hd-border);
    border-radius: 50px;
    font-size: 0.72rem;
    color: var(--hd-primary);
    margin-bottom: 18px;
    font-weight: 600;
}

.contact-title {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    font-weight: 800;
    color: var(--hd-text);
    margin-bottom: 14px;
}

.contact-desc {
    font-size: 0.85rem;
    color: var(--hd-text-dim);
    line-height: 1.7;
    margin-bottom: 24px;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.contact-card {
    padding: 18px;
    background: var(--hd-card);
    border: 1px solid var(--hd-border);
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(51, 119, 204, 0.07);
}

.contact-card:hover {
    transform: translateY(-6px);
    border-color: var(--hd-primary);
    box-shadow: var(--hd-shadow);
}

.contact-card-icon {
    font-size: 1.7rem;
    margin-bottom: 10px;
}

.contact-card-label {
    font-size: 0.72rem;
    color: var(--hd-text-dim);
    margin-bottom: 5px;
}

.contact-card-value {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--hd-text);
}

.contact-visual {
    flex: 1;
    position: relative;
}

.data-viz {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f8fbff, #f0f7ff);
    border-radius: 22px;
    position: relative;
    overflow: hidden;
    border: 2px solid var(--hd-border);
}

/* 柱状图填满整个区域 */
.viz-bars-full {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: flex-end;
    justify-content: space-evenly;
    padding: 40px 20px 40px 20px;
    gap: 8px;
}

.viz-bar-full {
    flex: 1;
    background: linear-gradient(180deg, var(--hd-primary), var(--hd-accent));
    border-radius: 6px 6px 0 0;
    animation: barGrowFull 2s ease-in-out infinite;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(64, 116, 255, 0.25);
}

.viz-bar-full:nth-child(1) { height: 70%; animation-delay: 0s; }
.viz-bar-full:nth-child(2) { height: 85%; animation-delay: 0.2s; }
.viz-bar-full:nth-child(3) { height: 65%; animation-delay: 0.4s; }
.viz-bar-full:nth-child(4) { height: 90%; animation-delay: 0.6s; }
.viz-bar-full:nth-child(5) { height: 75%; animation-delay: 0.8s; }
.viz-bar-full:nth-child(6) { height: 95%; animation-delay: 1s; }
.viz-bar-full:nth-child(7) { height: 80%; animation-delay: 1.2s; }

@keyframes barGrowFull {
    0%, 100% { transform: scaleY(0.85); opacity: 0.8; }
    50% { transform: scaleY(1); opacity: 1; }
}



/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1200px) {
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .solutions-mosaic { grid-template-columns: repeat(2, 1fr); grid-template-rows: auto; }
    .solution-card:nth-child(1) { grid-column: span 2; grid-row: span 1; }
    .solution-card:nth-child(2) { grid-column: span 2; }
    .cases-timeline { flex-wrap: wrap; }
    .cases-timeline::before { display: none; }
    .case-item { flex: 0 0 calc(50% - 15px); }
    .case-dot { display: none; }
    .software-main, .contact-main { gap: 20px; }
    .contact-main {
        align-items: stretch;
    }
    .contact-content {
        min-height: 220px;
    }
    .section-wrapper { padding: 22px 28px; }
    
    /* 软件部分平板适配 */
    .software-main {
        grid-template-columns: 1fr auto;
        gap: 24px;
    }
    
    .qr-section {
        grid-column: span 2;
        justify-self: center;
        display: inline-block;
    }
    
    .software-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .phone-single {
        width: 240px;
        height: 480px;
    }
    
    .app-logo-wrapper {
        width: 58px;
        height: 58px;
    }
    
    .app-logo-icon {
        font-size: 2rem;
    }
    
    .app-title {
        font-size: 1.2rem;
    }
}

@media (max-width: 992px) {
    .section-wrapper { padding: 20px 24px; }
    .software-main, .contact-main { flex-direction: column; gap: 28px; }
    .contact-main {
        align-items: stretch;
    }
    .contact-content {
        min-height: 260px;
    }
    .progress-steps { display: none; }
    .contact-main { min-height: auto; }
    .data-viz {
        height: 260px;
        min-height: 260px;
    }

    /* 数据可视化响应式调整 */
    .viz-grid {
        background-size: 20px 20px;
        animation-duration: 15s;
    }

    .viz-bars-full {
        padding: 30px 15px 30px 15px;
        gap: 6px;
    }

    .viz-bar-full {
        height: 65%;
    }

    /* 软件部分小屏适配 */
    .software-main {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .software-content {
        order: 1;
    }
    
    .software-mockup {
        order: 2;
    }
    
    .qr-section {
        order: 3;
        grid-column: span 1;
    }
    
    .phone-single { 
        width: 240px; 
        height: 480px; 
    }
    
    .app-logo-wrapper {
        width: 56px;
        height: 56px;
    }
    
    .app-logo-icon {
        font-size: 1.9rem;
    }
    
    .app-title {
        font-size: 1.15rem;
    }
    
    .software-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        top: 76px;
        height: calc(100vh - 126px);
    }

    .section-wrapper {
        padding: 18px 16px;
        max-height: calc(100vh - 126px);
    }

    .products-grid { grid-template-columns: 1fr; }
    .solutions-mosaic {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }
    .solution-card {
        grid-column: span 1 !important;
        grid-row: span 1 !important;
        min-height: 160px;
    }
    .case-item { flex: 0 0 100%; }
    .contact-cards { grid-template-columns: 1fr; }
    .hero-features { gap: 10px; }
    .data-viz {
        height: 220px;
        min-height: 220px;
    }

    /* 数据可视化手机适配 */
    .viz-bars-full {
        padding: 25px 10px 25px 10px;
        gap: 5px;
    }

    .viz-bar-full {
        height: 60%;
    }

    .software-main { gap: 20px; }
    .contact-main { gap: 20px; }
    
    /* 软件部分手机适配 */
    .software-main {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    
    .phone-single { 
        width: 220px; 
        height: 440px; 
    }
    
    .phone-frame {
        border-radius: 36px;
        padding: 10px;
    }
    
    .phone-camera-hole {
        width: 20px;
        height: 20px;
        top: 14px;
    }
    
    .phone-camera-hole::before {
        width: 9px;
        height: 9px;
    }
    
    .app-logo-wrapper {
        width: 52px;
        height: 52px;
    }
    
    .app-logo-icon {
        font-size: 1.8rem;
    }
    
    .app-title {
        font-size: 1.1rem;
    }
    
    .app-subtitle {
        font-size: 0.65rem;
    }
    
    .quick-action {
        padding: 8px 5px;
    }
    
    .action-icon {
        font-size: 1.25rem;
    }
    
    .preview-screen {
        height: 100px;
    }
    
    .preview-text {
        font-size: 1rem;
    }
    
    .preview-effect {
        font-size: 0.7rem;
    }
    
    .software-features {
        grid-template-columns: 1fr;
    }
    
    .software-feature {
        padding: 9px 11px;
    }
    
    .feature-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    
    .feature-title {
        font-size: 0.75rem;
    }
    
    .feature-desc {
        font-size: 0.65rem;
    }

    .banner-arrow {
        width: 40px;
        height: 80px;
    }

    .banner-arrow span {
        font-size: 2.4rem;
    }

    .banner-prev {
        left: 20px;
    }

    .banner-next {
        right: 20px;
    }

    .banner-indicators {
        bottom: 15px;
        gap: 8px;
    }

    .banner-indicator {
        width: 40px;
        height: 2.5px;
    }

    .banner-indicator.active {
        width: 35px;
    }
}

@media (max-width: 480px) {
    .section-wrapper {
        padding: 15px 12px;
    }

    .section-header {
        margin-bottom: 18px;
    }

    .section-tag {
        font-size: 0.62rem;
        padding: 5px 14px;
    }

    .section-title {
        font-size: clamp(1.1rem, 2.8vw, 1.35rem);
    }

    .section-desc {
        font-size: 0.72rem;
    }
    
    /* 软件部分小屏手机适配 */
    .phone-single {
        width: 200px;
        height: 400px;
    }
    
    .phone-frame {
        border-radius: 32px;
        padding: 9px;
    }
    
    .phone-camera-hole {
        width: 18px;
        height: 18px;
        top: 12px;
    }
    
    .phone-camera-hole::before {
        width: 8px;
        height: 8px;
    }
    
    .phone-camera-hole::after {
        width: 3px;
        height: 3px;
        top: 2px;
        right: 3px;
    }
    
    .screen-status-bar {
        padding: 6px 14px 5px;
        font-size: 0.6rem;
    }
    
    .status-icons {
        font-size: 0.55rem;
    }
    
    .app-main-interface {
        padding: 8px 14px;
    }
    
    .app-header {
        margin-bottom: 12px;
    }
    
    .app-logo-wrapper {
        width: 48px;
        height: 48px;
        margin-bottom: 8px;
    }
    
    .app-logo-icon {
        font-size: 1.65rem;
    }
    
    .app-title {
        font-size: 1rem;
    }
    
    .app-subtitle {
        font-size: 0.62rem;
    }
    
    .app-quick-actions {
        gap: 8px;
        margin-bottom: 12px;
    }
    
    .quick-action {
        padding: 7px 4px;
        gap: 5px;
    }
    
    .action-icon {
        font-size: 1.15rem;
    }
    
    .action-label {
        font-size: 0.55rem;
    }
    
    .app-preview {
        margin-bottom: 12px;
    }
    
    .preview-screen {
        height: 100px;
    }
    
    .preview-text {
        font-size: 0.95rem;
    }
    
    .preview-effect {
        font-size: 0.65rem;
    }
    
    .app-bottom-nav {
        padding: 8px 14px;
    }
    
    .nav-icon {
        font-size: 1.1rem;
    }
    
    .nav-label {
        font-size: 0.55rem;
    }
    
    .phone-home-button {
        bottom: 14px;
        width: 45px;
    }

    .qr-section {
        padding: 18px;
    }

    .qr-code {
        width: 85px;
        height: 85px;
    }

    .qr-code img {
        width: 85px;
        height: 85px;
    }

    .qr-text {
        font-size: 0.72rem;
    }
    
    .qr-platforms {
        gap: 6px;
    }
    
    .platform-badge {
        padding: 4px 10px;
        font-size: 0.62rem;
    }
    
    .software-features {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .software-feature {
        padding: 8px 10px;
        gap: 9px;
    }
    
    .feature-icon {
        width: 30px;
        height: 30px;
        font-size: 0.95rem;
    }
    
    .feature-title {
        font-size: 0.72rem;
    }
    
    .feature-desc {
        font-size: 0.62rem;
    }

    .data-viz {
        height: 200px;
        min-height: 200px;
    }

    .viz-grid {
        background-size: 10px 10px;
        animation-duration: 8s;
    }

    .viz-bars-full {
        width: 80%;
        padding: 20px 8px 12px 12px;
        gap: 2px;
    }

    .viz-bar-item {
        height: 55%;
    }

    .viz-core {
        width: 20%;
    }

    .viz-inner-ring {
        width: 60px;
        height: 60px;
    }

    .viz-glow {
        width: 100px;
        height: 100px;
    }

    .viz-circle::before {
        width: 75px;
        height: 75px;
    }

    .viz-circle::after {
        width: 45px;
        height: 45px;
    }

    .viz-number {
        font-size: 1.6rem;
    }

    .viz-label {
        font-size: 0.68rem;
    }
}

@media (max-width: 375px) {
    .section-wrapper {
        padding: 12px 10px;
    }

    .phone-stack {
        width: 135px;
        height: 245px;
    }

    .phone {
        width: 120px;
        height: 240px;
    }

    .data-viz {
        height: 180px;
        min-height: 180px;
    }

    .viz-bars-full {
        padding: 20px 8px 20px 8px;
        gap: 4px;
    }

    .viz-bar-full {
        height: 50%;
    }
}