:root {
    --color-bg: #f8f9ff;
    --color-bg-alt: #ffffff;
    --color-primary: #ff6b8a;
    --color-primary-dark: #e55274;
    --color-secondary: #4e8cf7;
    --color-accent: #7b61ff;
    --color-text: #1e2340;
    --color-text-light: #5a6380;
    --color-border: rgba(78, 140, 247, 0.15);
    --font-base: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    --max-width: 1100px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --shadow-soft: 0 24px 50px rgba(123, 97, 255, 0.08);
    --shadow-card: 0 18px 40px rgba(78, 140, 247, 0.1);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-base);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

a:focus-visible {
    outline: 2px dashed var(--color-secondary);
    outline-offset: 4px;
}

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

.container {
    width: min(100% - 48px, var(--max-width));
    margin-inline: auto;
}

.site-header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: #fff;
    font-size: 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 999px;
    font-weight: 600;
    font-family: inherit;
    font-size: 16px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    cursor: pointer;
    border: none;
    background: none;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 16px 30px rgba(255, 107, 138, 0.2);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 18px 36px rgba(255, 107, 138, 0.28);
}

.hero {
    padding-block: 96px 64px;
    background: radial-gradient(circle at top left, rgba(126, 197, 255, 0.18), transparent 55%),
                radial-gradient(circle at bottom right, rgba(255, 150, 187, 0.25), transparent 45%);
}

.hero-content {
    display: grid;
    gap: 48px;
    align-items: center;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.hero-copy h1 {
    font-size: clamp(32px, 4vw, 48px);
    line-height: 1.15;
    margin: 0;
}

.hero-copy p {
    font-size: 18px;
    color: var(--color-text-light);
    margin: 24px 0;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 32px;
}

.hero-badges span {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.9);
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 14px;
    color: var(--color-text);
}

.hero-visual {
    position: relative;
    display: grid;
    place-items: center;
}

.gradient-orb {
    position: absolute;
    width: clamp(220px, 40vw, 320px);
    height: clamp(220px, 40vw, 320px);
    background: radial-gradient(circle, rgba(78, 140, 247, 0.4), rgba(123, 97, 255, 0.1));
    border-radius: 50%;
    filter: blur(8px);
}

.card {
    position: relative;
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 32px;
    width: min(360px, 100%);
}

.card-title {
    font-weight: 600;
    margin-bottom: 12px;
}

.card ul {
    margin: 0 0 20px 0;
    padding-left: 18px;
    color: var(--color-text-light);
}

.card-footer {
    display: block;
    font-size: 14px;
    color: var(--color-secondary);
    font-weight: 600;
}

.section {
    padding-block: 80px;
}

.section h2 {
    text-align: center;
    font-size: clamp(28px, 3vw, 36px);
    margin-bottom: 40px;
}

.section-alt {
    background: var(--color-bg-alt);
}

.grid-three {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.info-card {
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.info-card h3 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 20px;
}

.info-card p {
    margin: 0;
    color: var(--color-text-light);
}

.features {
    display: grid;
    gap: 48px;
    align-items: center;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.features-list {
    list-style: none;
    padding: 0;
    margin: 0 0 24px 0;
    display: grid;
    gap: 16px;
    color: var(--color-text-light);
}

.features-list li {
    background: rgba(248, 249, 255, 0.8);
    padding: 18px 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.features-list strong {
    color: var(--color-secondary);
}

.disclaimer {
    font-size: 14px;
    color: var(--color-text-light);
}

.stats-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(237, 242, 255, 0.9));
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(123, 97, 255, 0.1);
}

.stats-title {
    margin: 0 0 24px 0;
    font-weight: 600;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(120px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stats-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-accent);
}

.stats-label {
    display: block;
    font-size: 14px;
    color: var(--color-text-light);
}

.stats-footer {
    font-size: 13px;
    color: var(--color-text-light);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.step-item {
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    position: relative;
}

.step-index {
    position: absolute;
    top: -18px;
    left: 24px;
    background: var(--color-secondary);
    color: #fff;
    border-radius: 999px;
    padding: 8px 16px;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.08em;
}

.step-item h3 {
    margin-top: 12px;
    margin-bottom: 12px;
}

.step-item p {
    margin: 0;
    color: var(--color-text-light);
}

.steps-note {
    text-align: center;
    margin-top: 32px;
    color: var(--color-text-light);
}

.testimonial {
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    margin: 0;
    position: relative;
}

.testimonial::before {
    content: "“";
    font-size: 48px;
    color: rgba(255, 107, 138, 0.3);
    position: absolute;
    top: 12px;
    left: 20px;
}

.testimonial p {
    margin: 0 0 18px 0;
    color: var(--color-text-light);
}

.testimonial cite {
    font-style: normal;
    font-weight: 600;
    color: var(--color-text);
}

.faq-list {
    display: grid;
    gap: 24px;
}

.faq-item {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.faq-item h3 {
    margin-top: 0;
    margin-bottom: 12px;
}

.faq-item p {
    margin: 0;
    color: var(--color-text-light);
}

.cta {
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 227, 236, 0.9), rgba(228, 237, 255, 0.95));
    position: relative;
    overflow: hidden;
}

.cta::before,
.cta::after {
    content: "";
    position: absolute;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(123, 97, 255, 0.18);
    filter: blur(6px);
}

.cta::before {
    top: -60px;
    left: 12%;
}

.cta::after {
    bottom: -80px;
    right: 15%;
}

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

.cta h2 {
    margin-bottom: 16px;
}

.cta p {
    margin: 0 0 32px 0;
    color: var(--color-text-light);
    font-size: 18px;
}

.site-footer {
    background: #15182b;
    color: rgba(255, 255, 255, 0.75);
    padding-block: 32px;
    font-size: 14px;
}

.site-footer .container {
    display: grid;
    gap: 12px;
    text-align: center;
}

@media (max-width: 960px) {
    .hero-content,
    .features {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-block: 72px 48px;
    }

    .hero-visual {
        order: -1;
    }

    .site-header .container {
        flex-direction: column;
        gap: 12px;
    }

    .btn {
        width: 100%;
        max-width: 320px;
    }
}

@media (max-width: 600px) {
    .container {
        width: min(100% - 32px, var(--max-width));
    }

    .site-header .container {
        align-items: stretch;
    }

    .brand {
        justify-content: center;
        text-align: center;
    }

    .hero {
        padding-block: 56px 40px;
    }

    .hero-content {
        gap: 36px;
        text-align: center;
    }

    .hero-copy p,
    .cta p {
        font-size: 16px;
    }

    .hero-copy h1 {
        font-size: 30px;
    }

    .hero-badges {
        gap: 8px;
        justify-content: center;
    }

    .hero-badges span {
        font-size: 13px;
        padding-inline: 12px;
    }

    .card {
        padding: 24px;
        margin-inline: auto;
    }

    .btn {
        max-width: none;
    }

    .features {
        text-align: center;
    }

    .features-list {
        text-align: left;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding-block: 56px;
    }

    .step-index {
        position: static;
        margin-bottom: 16px;
    }

    .step-item {
        padding-top: 24px;
    }

    .faq-item,
    .info-card,
    .testimonial {
        padding: 20px;
    }

    .cta::before,
    .cta::after {
        width: 160px;
        height: 160px;
    }
}