/* ==========================================================================
   首页专属样式 - HEDU 蓝色调版本
   ========================================================================== */

/* ============== Hero 区 ============== */
.hero {
    position: relative;
    min-height: calc(100vh - 84px);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 80px 0 100px;
    background:
        radial-gradient(ellipse at top right, rgba(30, 136, 229, 0.15), transparent 60%),
        radial-gradient(ellipse at bottom left, rgba(0, 172, 193, 0.08), transparent 50%),
        linear-gradient(180deg, #F0F7FF 0%, #FFFFFF 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 大几何圆形装饰 */
.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
}

.hero-shape-1 {
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(30, 136, 229, 0.25), transparent 70%);
    top: -250px;
    right: -200px;
}

.hero-shape-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(10, 37, 64, 0.12), transparent 70%);
    bottom: -200px;
    left: -200px;
}

/* 网格背景纹理 */
.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(10, 37, 64, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(10, 37, 64, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at center, black, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at center, black, transparent 80%);
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-text {
    max-width: 760px;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    padding: 10px 20px;
    background-color: rgba(30, 136, 229, 0.08);
    border: 1px solid rgba(30, 136, 229, 0.2);
    border-radius: 100px;
    margin-bottom: 32px;
}

.hero-eyebrow::before {
    content: '';
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(30, 136, 229, 0.2);
}

.hero-title {
    font-size: clamp(2.3rem, 4.4vw, 3.5rem);
    line-height: 1.1;
    margin-bottom: 32px;
    letter-spacing: -0.035em;
    font-weight: 800;
}

.hero-title em {
    font-style: normal;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
}

.hero-title em::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 8px;
    right: 0;
    height: 16px;
    background: linear-gradient(90deg, rgba(30, 136, 229, 0.2), rgba(30, 136, 229, 0));
    z-index: -1;
    border-radius: 4px;
}

.hero-desc {
    font-size: clamp(0.95rem, 1.2vw, 1.05rem);
    color: var(--color-text-muted);
    line-height: 1.9;
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-card {
    background-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 16px;
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    background-color: rgba(255, 255, 255, 0.95);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-title {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.2vw, 1.6rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: 0.02em;
}

.stat-desc {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--color-primary);
    font-size: 0.78rem;
    letter-spacing: 0.2em;
    opacity: 0.6;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scroll-down 1.8s ease-in-out infinite;
}

@keyframes scroll-down {
    0%, 100% { transform: scaleY(1); transform-origin: top; }
    50% { transform: scaleY(0.3); }
}

/* ============== 品牌承诺 ============== */
.promise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.promise-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.promise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.promise-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

.promise-card:hover::before {
    transform: scaleX(1);
}

.promise-icon {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(10, 37, 64, 0.06), rgba(30, 136, 229, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    margin-bottom: 28px;
    transition: var(--transition);
}

.promise-card:hover .promise-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
    transform: scale(1.05);
}

.promise-card h3 {
    margin-bottom: 12px;
    font-size: 1.08rem;
    color: var(--color-primary);
}

.promise-card p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.75;
    margin: 0;
}

/* ============== 业务版图 ============== */
.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.business-card {
    position: relative;
    display: block;
    padding: 44px 36px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: var(--transition);
    overflow: hidden;
}

.business-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.business-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.business-card:hover::before { opacity: 1; }
.business-card:hover > * { color: var(--color-white); position: relative; z-index: 1; }
.business-card:hover .business-num { color: var(--color-accent-light); }
.business-card:hover .business-arrow {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-white);
    transform: rotate(-45deg);
}

.business-num {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.15em;
    margin-bottom: 18px;
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.business-card h3 {
    margin-bottom: 12px;
    font-size: 1.15rem;
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.business-card p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.75;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.business-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    color: var(--color-primary);
    font-size: 1.1rem;
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

/* ============== 数字见证 ============== */
.section-numbers {
    position: relative;
    overflow: hidden;
}

.section-numbers::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(30, 136, 229, 0.25), transparent 70%);
}

.section-numbers::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(10, 37, 64, 0.4), transparent 70%);
}

/* ============== 信任之选（文字+图片） ============== */
.trust-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 72px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.trust-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.trust-content .section-title {
    margin-bottom: 18px;
}

.trust-lead {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.98rem;
    line-height: 1.85;
    margin-bottom: 24px;
}

.trust-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.trust-list li {
    position: relative;
    padding: 12px 0 12px 26px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.92rem;
    line-height: 1.7;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-list li:last-child { border-bottom: none; }

.trust-list li::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 22px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
}

/* ============== 品牌故事 ============== */
.story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 96px;
    align-items: center;
}

.story-frame {
    aspect-ratio: 4 / 5;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 60%, var(--color-accent) 100%);
    padding: 6px;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.story-frame::before {
    content: '';
    position: absolute;
    inset: -24px;
    border-radius: 24px;
    border: 1px solid rgba(10, 37, 64, 0.15);
    pointer-events: none;
}

.story-frame-inner {
    width: 100%;
    height: 100%;
    border-radius: 12px;
    background:
        linear-gradient(180deg, rgba(6, 27, 48, 0.05) 0%, rgba(6, 27, 48, 0.72) 100%),
        url('../img/brand-story.png') center / cover no-repeat;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 48px;
    color: var(--color-white);
}

.story-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    background-color: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 100px;
    font-size: 0.85rem;
    width: fit-content;
    margin-bottom: 18px;
    letter-spacing: 0.1em;
}

.story-badge strong {
    color: var(--color-accent-light);
    font-weight: 600;
}

.story-quote {
    font-family: var(--font-serif);
    font-size: clamp(1.02rem, 1.3vw, 1.2rem);
    line-height: 1.6;
    font-weight: 500;
}

.story-content p {
    color: var(--color-text-muted);
    line-height: 1.9;
    font-size: 0.95rem;
}

/* ============== CTA ============== */
.cta-section {
    background:
        radial-gradient(ellipse at top right, rgba(30, 136, 229, 0.4), transparent 50%),
        linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: clamp(80px, 10vw, 120px) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse 60% 60% at center, black, transparent);
    -webkit-mask-image: radial-gradient(ellipse 60% 60% at center, black, transparent);
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 760px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--color-white);
    margin-bottom: 24px;
}

.cta-content p {
    font-size: clamp(0.95rem, 1.2vw, 1.05rem);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    line-height: 1.8;
}

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

/* ============== 响应式 ============== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 56px;
    }
    .hero-stats {
        max-width: 600px;
    }
    .promise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .business-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .trust-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .story-grid {
        grid-template-columns: 1fr;
        gap: 56px;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 48px 0 80px;
        min-height: auto;
    }
    .hero-actions {
        width: 100%;
    }
    .hero-actions .btn {
        flex: 1;
        min-width: 140px;
    }
    .hero-stats {
        grid-template-columns: 1fr;
    }
    .promise-grid,
    .business-grid {
        grid-template-columns: 1fr;
    }
    .hero-scroll { display: none; }
}