/* ============================================================
   手到擒来 · 医疗软件产品中心 — 主样式表
   品牌色系: #1661AB (深蓝) / #F7F9FC (浅灰蓝背景)
   ============================================================ */

/* ---------- Reset & Base ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(160deg, #F7F9FC 0%, #EDF2F9 100%);
    color: #1B2A3A;
    line-height: 1.4;
    scroll-behavior: smooth;
    min-height: 100vh;
}

/* ---------- Layout Container ---------- */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

/* ---------- Hero / Header ---------- */
.hero {
    margin-bottom: 1.2rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1.5rem;
    border-bottom: 1.5px solid rgba(22, 97, 171, 0.18);
    padding-bottom: 1.5rem;
}

.brand {
    flex: 1;
}

.brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1661AB, #0F4A85);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    letter-spacing: -0.3px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.brand h1 i {
    background: none;
    color: #1661AB;
    font-size: 1.5rem;
    background-clip: unset;
    -webkit-background-clip: unset;
}

.brand .tagline {
    color: #5B7A9A;
    font-size: 0.95rem;
    margin-top: 0.5rem;
    font-weight: 400;
    border-left: 3px solid #1661AB;
    padding-left: 0.75rem;
}

/* ---------- Product Card Grid ---------- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
    transition: 0.2s;
}

/* ---------- Product Card ---------- */
.product-card {
    background: #fff;
    border-radius: 1.2rem;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.3s ease;
    box-shadow: 0 2px 12px -2px rgba(22, 97, 171, 0.06);
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(22, 97, 171, 0.08);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 24px -6px rgba(22, 97, 171, 0.12);
    border-color: rgba(22, 97, 171, 0.25);
}

.card-header {
    padding: 1rem 1rem 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid #F0F4FA;
}

.card-icon {
    background: linear-gradient(135deg, #EEF2F8, #E2E9F2);
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 1.3rem;
    transition: 0.2s;
}

.product-card:hover .card-icon {
    background: linear-gradient(135deg, #E2E9F2, #D6DFEC);
    transform: scale(0.96);
}

.product-name {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.2px;
    color: #1B2A3A;
    line-height: 1.3;
}

.card-body {
    padding: 0.6rem 1rem 0.5rem 1rem;
    flex: 1;
}

.description {
    color: #5A7088;
    font-size: 0.72rem;
    line-height: 1.4;
    margin-bottom: 0.6rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2rem;
}

/* ---------- Platform Tags ---------- */
.audience-section {
    margin: 0.4rem 0 0.3rem;
}

.platform-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.15rem 0.55rem;
    border-radius: 40px;
    font-size: 0.55rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    margin-bottom: 0.35rem;
}

.platform-mobile {
    background: #EBF7EE;
    color: #3AAA35;
}

.platform-web {
    background: #E3ECF6;
    color: #1661AB;
}

/* ---------- Audience Tags ---------- */
.audience-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    color: #8BA5C0;
    margin-bottom: 0.35rem;
    display: flex;
    align-items: center;
    gap: 4px;
}

.audience-tags {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.35rem;
    overflow: hidden;
}

.tag {
    background: #EDF2F8;
    padding: 0.2rem 0.55rem;
    border-radius: 40px;
    font-size: 0.6rem;
    font-weight: 500;
    color: #1661AB;
    transition: 0.1s;
    letter-spacing: 0.2px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.tag i {
    font-size: 0.55rem;
    color: #4A8DCE;
}

/* ---------- Card Footer / Button ---------- */
.card-footer {
    padding: 0.3rem 1rem 0.8rem 1rem;
    margin-top: auto;
}

.btn-detail {
    background: transparent;
    border: 1px solid #CDDEEE;
    width: 100%;
    padding: 0.5rem 0;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.7rem;
    color: #1661AB;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    text-decoration: none;
}

.btn-detail i {
    font-size: 0.65rem;
    transition: transform 0.2s;
}

.btn-detail:hover {
    background: #1661AB;
    border-color: #1661AB;
    color: white;
    box-shadow: 0 4px 12px rgba(22, 97, 171, 0.3);
}

.btn-detail:hover i {
    transform: translateX(3px);
    color: white;
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: 3.5rem 2rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 2rem;
    margin-top: 1rem;
    color: #8BA5C0;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.6;
    color: #1661AB;
}

/* ---------- Footer ---------- */
.footer {
    margin-top: 4rem;
    text-align: center;
    font-size: 0.8rem;
    color: #8BA5C0;
    border-top: 1px solid rgba(22, 97, 171, 0.12);
    padding-top: 2rem;
}

/* ---------- Demo Page Styles ---------- */
.demo-page {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

.demo-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #1661AB;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    transition: color 0.2s;
}

.demo-back:hover {
    color: #0F4A85;
}

.demo-hero {
    background: #fff;
    border-radius: 1.2rem;
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 12px -2px rgba(22, 97, 171, 0.06);
    border: 1px solid rgba(22, 97, 171, 0.08);
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.demo-hero-icon {
    background: linear-gradient(135deg, #EEF2F8, #E2E9F2);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 18px;
    font-size: 2rem;
    flex-shrink: 0;
}

.demo-hero-info h1 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #1B2A3A;
    margin-bottom: 0.5rem;
}

.demo-hero-info .demo-desc {
    color: #5A7088;
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 0.8rem;
}

.demo-meta {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

/* ---------- Demo Stage Area ---------- */
.demo-stage {
    background: #fff;
    border-radius: 1.2rem;
    padding: 2rem;
    box-shadow: 0 2px 12px -2px rgba(22, 97, 171, 0.06);
    border: 1px solid rgba(22, 97, 171, 0.08);
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.demo-stage .stage-placeholder {
    text-align: center;
    color: #8BA5C0;
}

.demo-stage .stage-placeholder i {
    font-size: 4rem;
    color: #1661AB;
    opacity: 0.3;
    margin-bottom: 1rem;
}

.demo-stage .stage-placeholder h3 {
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #5B7A9A;
}

.demo-stage .stage-placeholder p {
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
}

.btn-launch {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #1661AB, #0F4A85);
    color: white;
    border: none;
    padding: 0.7rem 1.8rem;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.25s;
    font-family: inherit;
    text-decoration: none;
}

.btn-launch:hover {
    box-shadow: 0 6px 20px rgba(22, 97, 171, 0.35);
    transform: translateY(-1px);
}

.btn-launch i {
    transition: transform 0.2s;
}

.btn-launch:hover i {
    transform: translateX(3px);
}

/* ---------- Responsive Breakpoints ---------- */
@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 860px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }

    .demo-hero {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

@media (max-width: 540px) {
    .app-container {
        padding: 1.2rem 1rem 2rem;
    }

    .hero {
        flex-direction: column;
        align-items: stretch;
    }

    .brand h1 {
        font-size: 1.6rem;
    }

    .products-grid {
        gap: 0.8rem;
        grid-template-columns: 1fr;
    }

    .card-header {
        padding: 1rem 1rem 0.5rem;
    }

    .card-body {
        padding: 0.6rem 1rem 0.5rem;
    }

    .card-footer {
        padding: 0.5rem 1rem 1rem;
    }

    .demo-page {
        padding: 1rem 0.8rem 2rem;
    }

    .demo-hero {
        padding: 1.2rem;
    }

    .demo-stage {
        padding: 1.2rem;
        min-height: 300px;
    }
}