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

:root {
    --primary: #FAE307;
    --primary-deep: #d4c506;
    --primary-soft: rgba(250, 227, 7, 0.8);
}

.app {
    width: 100%;
    min-height: 100vh;
    background: #000000;
    color: #f5f5f5;   
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    overflow-x: hidden;
}

/* 整个页面的星星点点效果 */
.app::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 120%;
    height: 120%;
    background-image: 
        radial-gradient(circle at 20% 30%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 60% 70%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 50% 50%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 80% 10%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 90% 40%, var(--primary) 2px, transparent 2px),
        radial-gradient(circle at 33% 60%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 55% 80%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 10% 90%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 25% 15%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 70% 25%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 40% 85%, var(--primary) 2px, transparent 2px),
        radial-gradient(circle at 15% 50%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 85% 60%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 75% 90%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 5% 70%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 45% 20%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 95% 80%, var(--primary) 2px, transparent 2px),
        radial-gradient(circle at 35% 45%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 65% 5%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 50% 95%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 12% 25%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 38% 65%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 68% 35%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 88% 75%, var(--primary) 2px, transparent 2px),
        radial-gradient(circle at 22% 85%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 72% 15%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 42% 45%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 92% 55%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 18% 65%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 58% 25%, var(--primary) 2px, transparent 2px);
    background-size: 120% 120%;
    opacity: 0.6;
    animation: starMove1 20s linear infinite, twinkle 3s ease-in-out infinite;
    z-index: 0;
    pointer-events: none;
}

.app::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 120%;
    height: 120%;
    background-image: 
        radial-gradient(circle at 30% 40%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 50% 20%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 80% 50%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 20% 80%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 90% 15%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 40% 10%, var(--primary) 2px, transparent 2px),
        radial-gradient(circle at 60% 60%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 10% 40%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 70% 85%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 25% 55%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 85% 30%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 5% 25%, var(--primary) 2px, transparent 2px),
        radial-gradient(circle at 55% 90%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 95% 70%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 15% 60%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 75% 35%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 45% 75%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 35% 5%, var(--primary) 2px, transparent 2px),
        radial-gradient(circle at 65% 45%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 50% 65%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 28% 35%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 48% 85%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 78% 25%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 8% 75%, var(--primary) 2px, transparent 2px),
        radial-gradient(circle at 52% 15%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 82% 65%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 32% 55%, var(--primary) 1.5px, transparent 1.5px),
        radial-gradient(circle at 62% 85%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 92% 25%, var(--primary) 1px, transparent 1px),
        radial-gradient(circle at 18% 45%, var(--primary) 2px, transparent 2px);
    background-size: 120% 120%;
    opacity: 0.4;
    animation: starMove2 25s linear infinite reverse, twinkle 4s ease-in-out infinite reverse;
    z-index: 0;
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Hero 区 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000000;
    color: #ffffff;
    text-align: center;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.9s ease-out;
    z-index: 1;
}

/* Hero 背景光圈效果 */
.hero::before {
    content: "";
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 700px;
    height: 500px;
    background: radial-gradient(
        ellipse at center,
        rgba(250, 227, 7, 0.4) 0%,
        rgba(250, 227, 7, 0.2) 30%,
        rgba(250, 227, 7, 0.15) 50%,
        transparent 70%
    );
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
    animation: glowPulse 8s ease-in-out infinite;
}

.hero .container {
    position: relative;
    z-index: 1;
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.1);
    }
}


@keyframes starMove1 {
    0% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(5%, 3%);
    }
    50% {
        transform: translate(-3%, 8%);
    }
    75% {
        transform: translate(-8%, 3%);
    }
    100% {
        transform: translate(0, 0);
    }
}

@keyframes starMove2 {
    0% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(-4%, -5%);
    }
    50% {
        transform: translate(6%, -2%);
    }
    75% {
        transform: translate(3%, 6%);
    }
    100% {
        transform: translate(0, 0);
    }
}

@keyframes twinkle {
    0%, 100% {
        opacity: 0.4;
    }
    50% {
        opacity: 0.9;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.02em;

    position: relative;
    display: inline-block;
    white-space: nowrap;
    overflow: hidden;
    border-right: 2px solid rgba(250, 227, 7, 0.9);
    animation:
        typing 4s steps(24, end) 0.5s forwards,
        blink-caret 0.8s step-end infinite;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 16px;
    opacity: 0.95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-desc {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
}

.feature-tag {
    display: inline-block;
    padding: 10px 28px;
    background: rgba(250, 227, 7, 0.1);
    border: 1px solid rgba(250, 227, 7, 0.4);
    border-radius: 24px;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), 0 0 20px rgba(250, 227, 7, 0.1);
}

.feature-tag:hover {
    background: rgba(250, 227, 7, 0.2);
    border-color: rgba(250, 227, 7, 0.6);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3), 0 0 30px rgba(250, 227, 7, 0.2);
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
    background: radial-gradient(circle at 0 0, #ffffff 0, var(--primary) 55%, var(--primary-deep) 100%);
    color: #17130a;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.22s ease-out;
    box-shadow:
        0 8px 22px rgba(0, 0, 0, 0.35),
        0 0 22px rgba(250, 227, 7, 0.6);
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(255, 255, 255, 0.7);
    mix-blend-mode: screen;
    pointer-events: none;
}


.btn-primary::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(255, 255, 255, 0.7);
    mix-blend-mode: screen;
    pointer-events: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        0 12px 30px rgba(0, 0, 0, 0.45),
        0 0 32px rgba(250, 227, 7, 0.85);
    filter: brightness(1.03);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow:
        0 6px 16px rgba(0, 0, 0, 0.35),
        0 0 20px rgba(250, 227, 7, 0.7);
}


.btn-secondary {
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 600;
    background: transparent;
    color: #ffffff;
    border: 1px solid rgba(250, 227, 7, 0.6);
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.22s ease-out;
    position: relative;
    overflow: hidden;
}


.btn-secondary::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 0, rgba(250, 227, 7, 0.28) 40%, transparent 100%);
    transform: translateX(-120%);
    transition: transform 0.25s ease-out;
}

.btn-secondary:hover::before {
    transform: translateX(0%);
}

.btn-secondary:hover {
    background: rgba(250, 227, 7, 0.12);
    border-color: rgba(250, 227, 7, 0.9);
}

/* Section 通用样式 */
.section {
    padding: 120px 0;
    scroll-margin-top: 80px;
    animation: fadeInUp 0.8s ease-out;
    background: transparent;
    position: relative;
    z-index: 1;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink-caret {
    0%, 100% {
        border-color: rgba(250, 227, 7, 0);
    }
    50% {
        border-color: rgba(250, 227, 7, 0.9);
    }
}

.section-alt {
    background: transparent;
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    text-align: center;
    letter-spacing: -0.02em;
    color: #fdfdfd;
}

.section-subtitle {
    font-size: 20px;
    line-height: 1.8;
    color: rgba(245, 245, 245, 0.78);  
    text-align: center;
    max-width: 800px;
    margin: 0 auto 64px;
}

.section-desc {
    font-size: 18px;
    line-height: 1.8;
    color:  rgba(245, 245, 245, 0.78);
    text-align: center;
    max-width: 900px;
    margin: 0 auto 64px;
}

.section-summary {
    font-size: 22px;
    line-height: 1.8;
    color: #f5f5f5;;
    text-align: center;
    max-width: 700px;
    margin: 64px auto 0;
    font-weight: 500;
}

/* 痛点区块 */
.pain-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

.pain-point {
    padding: 32px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.pain-point:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    border-color: rgba(250, 227, 7, 0.3);
    background: rgba(255, 255, 255, 0.05);
}

.pain-point h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--primary);
}

.pain-point p {
    font-size: 16px;
    line-height: 1.8;
    color:  rgba(245, 245, 245, 0.78);
}

/* 功能卡片网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.feature-card {
    padding: 40px 32px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    border-top: 4px solid var(--primary);
    backdrop-filter: blur(10px);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    border-color: rgba(250, 227, 7, 0.3);
    background: rgba(255, 255, 255, 0.05);
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #fdfdfd;
}

.feature-card p {
    font-size: 16px;
    line-height: 1.8;
    color:  rgba(245, 245, 245, 0.78);
}

/* 场景卡片 */
.scenarios {
    display: flex;
    flex-direction: column;
    gap: 48px;
    margin-top: 64px;
}

.scenario-card {
    padding: 48px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    max-width: 900px;
    margin: 0 auto;
    backdrop-filter: blur(10px);
}

.scenario-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(250, 227, 7, 0.3);
    background: rgba(255, 255, 255, 0.05);
}

.scenario-card h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #fdfdfd;
}

.scenario-label {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary);
    color: #ffffff;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
}

.scenario-desc {
    font-size: 18px;
    line-height: 1.8;
    color:  rgba(245, 245, 245, 0.78);
}

/* 功能列表 */
.functions-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 48px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.function-item {
    padding: 32px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary);
    backdrop-filter: blur(10px);
}

.function-item:hover {
    transform: translateX(8px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    border-color: rgba(250, 227, 7, 0.3);
    background: rgba(255, 255, 255, 0.05);
}

.function-item h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #fdfdfd;
}

.function-item p {
    font-size: 16px;
    line-height: 1.8;
    color:  rgba(245, 245, 245, 0.78);
}

/* 愿景列表 */
.vision-list {
    list-style: none;
    max-width: 600px;
    margin: 48px auto;
    padding: 0;
}

.vision-list li {
    font-size: 20px;
    line-height: 2;
    color: #f5f5f5;;
    padding: 16px 0;
    padding-left: 32px;
    position: relative;
}

.vision-list li::before {
    content: "✨";
    position: absolute;
    left: 0;
    top: 16px;
    font-size: 20px;
}

.vision-motto {
    font-size: 24px;
    line-height: 1.8;
    color: var(--primary-soft);       
    text-align: center;
    max-width: 700px;
    margin: 64px auto 0;
    font-weight: 600;
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin-top: 48px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.faq-item {
    padding: 32px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
}

.faq-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #fdfdfd;
}

.faq-item p {
    font-size: 16px;
    line-height: 1.8;
    color:  rgba(245, 245, 245, 0.78);
}

/* CTA 区块 */
.cta-section {
    background: transparent;
    color: #ffffff;
}

.cta-section .section-title {
    color: #ffffff;
}

.cta-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
}


/* Footer */
.footer {
    padding: 48px 0;
    background: transparent;
    color: #ffffff;
    text-align: center;
    position: relative;
    z-index: 1;
}

.footer-brand {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.footer-tagline {
    font-size: 16px;
    opacity: 0.7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-desc {
        font-size: 16px;
    }

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

    .section-subtitle,
    .section-desc {
        font-size: 16px;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }

    .pain-points,
    .features-grid {
        grid-template-columns: 1fr;
    }

    .scenario-card {
        padding: 32px 24px;
    }

    .function-item,
    .faq-item {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 60px 0;
    }

    .section {
        padding: 80px 0;
    }

    .hero-title {
        font-size: 28px;
    }

    .section-title {
        font-size: 28px;
    }

    @keyframes soft-float {
        0% {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }
        50% {
            transform: translateY(-4px);
            box-shadow: 0 10px 26px rgba(0, 0, 0, 0.12);
        }
        100% {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }
    }
    .feature-card:nth-child(1),
    .feature-card:nth-child(2),
    .feature-card:nth-child(3) {
        animation: soft-float 7s ease-in-out infinite;
        animation-delay: calc((var(--i, 0)) * 0.6s);
    }

}