/* =========================================
   Slide 19: 灵活的交付选项
   风格：三栏版本对比页 / 客户选型视角
   ========================================= */

#slide-19 {
    position: absolute;
    overflow: hidden;
    padding: 42px 56px 24px;
    color: var(--color-text-main);
    display: flex;
    flex-direction: column;
    background:
        radial-gradient(circle at 12% 18%, rgba(30, 96, 248, 0.12) 0%, rgba(30, 96, 248, 0) 22%),
        radial-gradient(circle at 86% 18%, rgba(16, 185, 129, 0.1) 0%, rgba(16, 185, 129, 0) 24%),
        radial-gradient(circle at 50% 78%, rgba(14, 165, 233, 0.08) 0%, rgba(14, 165, 233, 0) 28%),
        linear-gradient(180deg, #FFFFFF 0%, #F7FAFF 56%, #EEF5FF 100%);
}

.slide-19-bg-grid,
.slide-19-bg-glow,
.slide-19-bg-sheen {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.slide-19-bg-grid {
    background-image:
        linear-gradient(rgba(30, 96, 248, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(30, 96, 248, 0.03) 1px, transparent 1px);
    background-size: 52px 52px;
    mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.96) 34%, rgba(0, 0, 0, 0.5) 76%, transparent 100%);
    animation: slide-19-grid-drift 36s linear infinite;
}

.slide-19-bg-glow {
    background:
        radial-gradient(circle at 24% 76%, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0) 22%),
        radial-gradient(circle at 76% 72%, rgba(16, 185, 129, 0.08) 0%, rgba(16, 185, 129, 0) 24%),
        radial-gradient(circle at 50% 36%, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0) 24%);
}

.slide-19-bg-sheen::before,
.slide-19-bg-sheen::after {
    content: '';
    position: absolute;
    border-radius: 999px;
}

.slide-19-bg-sheen::before {
    width: 980px;
    height: 980px;
    left: 470px;
    top: 118px;
    border: 1px solid rgba(30, 96, 248, 0.07);
}

.slide-19-bg-sheen::after {
    width: 820px;
    height: 240px;
    left: 550px;
    top: 598px;
    background: linear-gradient(90deg, rgba(30, 96, 248, 0), rgba(30, 96, 248, 0.1), rgba(16, 185, 129, 0.08), rgba(30, 96, 248, 0));
    filter: blur(28px);
}

.slide-19-header,
.slide-19-body,
.slide-19-footer {
    position: relative;
    z-index: 2;
}

.slide-19-header {
    margin-bottom: 18px;
    opacity: 0;
    transform: translateY(-22px);
    transition: opacity 0.72s ease 0.12s, transform 0.72s ease 0.12s;
}

.slide-19-title {
    position: relative;
    display: inline-block;
    margin-bottom: 8px;
    font-size: 44px;
    font-weight: 800;
    color: #0F172A;
}

.slide-19-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -12px;
    width: 108px;
    height: 6px;
    border-radius: 999px;
    background: linear-gradient(90deg, #1E60F8, #0EA5E9, #10B981);
}

.slide-19-subtitle {
    max-width: 1620px;
    font-size: 19px;
    line-height: 1.54;
    color: #475569;
}

.slide-19-body {
    flex: 1;
    min-height: 0;
    display: flex;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.82s ease 0.28s, transform 0.82s ease 0.28s;
}

.slide-19-card-grid {
    position: relative;
    width: 100%;
    height: 738px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    flex: 1;
    min-height: 0;
    padding: 30px 6px 8px;
    align-items: stretch;
}

.slide-19-plan-card {
    position: relative;
    padding: 24px 24px 22px;
    display: flex;
    flex-direction: column;
    border-radius: 34px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(30, 96, 248, 0.1);
    box-shadow: 0 22px 42px rgba(15, 23, 42, 0.08);
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.78s ease, transform 0.78s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.slide-19-plan-card::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 5px;
}

.slide-19-plan-card::after {
    content: '';
    position: absolute;
    inset: 14px;
    border-radius: 24px;
    border: 1px solid rgba(30, 96, 248, 0.05);
    pointer-events: none;
}

.slide-19-plan-card-starter::before {
    background: linear-gradient(90deg, rgba(30, 96, 248, 0.86), rgba(14, 165, 233, 0.82));
}

.slide-19-plan-card-ha::before {
    background: linear-gradient(90deg, rgba(30, 96, 248, 0.95), rgba(14, 165, 233, 0.82), rgba(16, 185, 129, 0.74));
}

.slide-19-plan-card-federation::before {
    background: linear-gradient(90deg, rgba(14, 165, 233, 0.84), rgba(16, 185, 129, 0.8));
}

.slide-19-plan-card:hover {
    box-shadow: 0 28px 52px rgba(15, 23, 42, 0.12);
}

.slide-19-plan-card.is-featured {
    transform: translateY(-6px);
    border-color: rgba(30, 96, 248, 0.18);
    box-shadow: 0 30px 58px rgba(30, 96, 248, 0.16);
}

.plan-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 18px;
}

.plan-tier,
.plan-fit {
    min-height: 32px;
    padding: 0 12px;
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.plan-tier {
    background: rgba(30, 96, 248, 0.08);
    color: #1D4ED8;
}

.plan-fit {
    background: rgba(15, 23, 42, 0.05);
    color: #475569;
}

.plan-fit-featured {
    background: linear-gradient(90deg, rgba(30, 96, 248, 0.12), rgba(16, 185, 129, 0.12));
    color: #0F3B90;
}

.slide-19-plan-card h3 {
    margin-bottom: 10px;
    font-size: 36px;
    line-height: 1.1;
    font-weight: 800;
    color: #0F172A;
}

.plan-description {
    min-height: 72px;
    margin-bottom: 14px;
    font-size: 18px;
    line-height: 1.66;
    color: #475569;
}

.plan-emblem {
    position: relative;
    min-height: 136px;
    margin-bottom: 14px;
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border-radius: 26px;
    background: linear-gradient(135deg, #1E60F8, #3B82F6);
    border: none;
    overflow: hidden;
}

.plan-emblem::after {
    content: '';
    position: absolute;
    right: -30px;
    bottom: -36px;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.24) 0%, rgba(255, 255, 255, 0) 72%);
}

.slide-19-plan-card-ha .plan-emblem {
    background: linear-gradient(135deg, #0F3B90 0%, #1E60F8 55%, #10B981 100%);
}

.slide-19-plan-card-federation .plan-emblem {
    background: linear-gradient(135deg, #0EA5E9 0%, #10B981 100%);
}

.plan-emblem span {
    position: relative;
    z-index: 1;
    font-size: 16px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
}

.plan-emblem strong {
    position: relative;
    z-index: 1;
    font-size: 52px;
    line-height: 1;
    font-weight: 800;
    color: #FFFFFF;
    text-align: center;
}

.plan-emblem small {
    position: relative;
    z-index: 1;
    font-size: 14px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.92);
    text-align: center;
}

.plan-spec-list {
    display: grid;
    gap: 8px;
    margin-bottom: 14px;
}

.plan-spec-row {
    min-height: 52px;
    padding: 10px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    border-radius: 20px;
    background: rgba(248, 250, 252, 0.88);
    border: 1px solid rgba(148, 163, 184, 0.14);
}

.plan-spec-row span {
    font-size: 18px;
    font-weight: 700;
    color: #64748B;
}

.plan-spec-row strong {
    flex: 1;
    font-size: 15px;
    line-height: 1.5;
    font-weight: 700;
    text-align: right;
    color: #0F172A;
}

.plan-feature-list {
    margin-top: auto;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.plan-feature-list span {
    min-height: 34px;
    padding: 0 12px;
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    background: rgba(248, 250, 252, 0.98);
    border: 1px solid rgba(30, 96, 248, 0.08);
    box-shadow: none;
    font-size: 12px;
    font-weight: 700;
    color: #334155;
}

.plan-feature-list span::before {
    content: '';
    width: 8px;
    height: 8px;
    margin-right: 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1E60F8, #10B981);
    box-shadow: 0 0 0 5px rgba(30, 96, 248, 0.08);
    flex: 0 0 auto;
}

.slide-19-footer {
    margin-top: 14px;
    padding: 18px 24px;
    border-radius: 26px;
    background: linear-gradient(120deg, #0F3B90, #1E60F8 56%, #0EA5E9 100%);
    box-shadow: 0 22px 42px rgba(30, 96, 248, 0.28);
    font-size: 20px;
    line-height: 1.55;
    font-weight: 700;
    color: #FFFFFF;
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.72s ease 0.88s, transform 0.72s ease 0.88s;
}

#slide-19.active .slide-19-header,
#slide-19.active .slide-19-body,
#slide-19.active .slide-19-footer,
#slide-19.active .slide-19-plan-card {
    opacity: 1;
    transform: translateY(0);
}

#slide-19.active .slide-19-plan-card-starter {
    transition-delay: 0.4s;
}

#slide-19.active .slide-19-plan-card-ha {
    transition-delay: 0.52s;
}

#slide-19.active .slide-19-plan-card-federation {
    transition-delay: 0.64s;
}

#slide-19.active .slide-19-plan-card-ha.is-featured {
    transform: translateY(-6px);
}

@keyframes slide-19-grid-drift {
    0% {
        transform: translate3d(0, 0, 0);
    }
    100% {
        transform: translate3d(-52px, -52px, 0);
    }
}