/* 邀请奖励 · 独立版系统赠送说明 */

:root {
    --pf-accent: #d97706;
    --pf-accent-dark: #b45309;
    --pf-accent-deep: #92400e;
    --pf-accent-soft: #fffbeb;
    --pf-gold: #f59e0b;
    --pf-bg: #faf8f5;
    --pf-surface: #fff;
    --pf-text: #0f172a;
    --pf-muted: #64748b;
    --pf-border: #e8e0d4;
    --pf-radius: 16px;
    --pf-shadow: 0 12px 40px rgba(146, 64, 14, 0.1);
}

.platform-page {
    background: var(--pf-bg);
    color: var(--pf-text);
    -webkit-font-smoothing: antialiased;
}

.platform-page .site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--pf-border);
}

.pf-lead {
    padding: 24px 0 0;
}

.pf-lead .pf-panel {
    border-radius: var(--pf-radius);
    overflow: hidden;
    box-shadow: var(--pf-shadow);
}

.pf-hero {
    display: grid;
    gap: 32px;
    align-items: center;
    padding: 48px 28px;
    color: #fff;
    background: linear-gradient(135deg, #78350f 0%, #b45309 30%, #d97706 55%, #f59e0b 100%);
}

@media (min-width: 900px) {
    .pf-hero {
        grid-template-columns: 1.15fr 0.85fr;
        gap: 40px;
        padding: 56px 48px;
    }
}

.pf-hero__kicker {
    display: inline-block;
    margin: 0 0 12px;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #fde68a;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(253, 230, 138, 0.35);
}

.pf-hero h1 {
    margin: 0 0 16px;
    font-size: clamp(1.5rem, 3.5vw, 2.125rem);
    font-weight: 800;
    line-height: 1.35;
}

.pf-hero__copy > p {
    margin: 0 0 20px;
    font-size: 0.9375rem;
    line-height: 1.85;
    color: rgba(255, 255, 255, 0.94);
}

.pf-hero__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}

.pf-hero__tags span {
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid rgba(253, 230, 138, 0.45);
    background: rgba(255, 255, 255, 0.1);
    font-size: 0.8125rem;
}

.pf-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.pf-hero__btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 22px;
    border-radius: 10px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none !important;
    transition: transform 0.15s, box-shadow 0.15s;
}

.pf-hero__btn--primary {
    color: #78350f;
    background: #fff;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.pf-hero__btn--ghost {
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.45);
    background: rgba(255, 255, 255, 0.08);
}

.pf-hero__btn:hover {
    transform: translateY(-1px);
    text-decoration: none !important;
}

.pf-reward-card {
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 14px;
    padding: 24px 20px;
    backdrop-filter: blur(8px);
}

.pf-reward-card__title {
    margin: 0 0 16px;
    font-size: 0.875rem;
    font-weight: 700;
    color: #fde68a;
    letter-spacing: 0.04em;
}

.pf-reward-card__tiers {
    display: grid;
    gap: 10px;
}

.pf-reward-tier {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
}

.pf-reward-tier__num {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    font-weight: 800;
    color: #78350f;
    background: #fde68a;
}

.pf-reward-tier__text {
    font-size: 0.875rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.95);
}

.pf-reward-tier__text strong {
    color: #fff;
}

.pf-stats {
    padding: 28px 0;
    background: var(--pf-surface);
    border-bottom: 1px solid var(--pf-border);
}

.pf-stats__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (min-width: 768px) {
    .pf-stats__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.pf-stats__item {
    text-align: center;
    padding: 16px 12px;
}

.pf-stats__item strong {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--pf-accent-dark);
    line-height: 1.2;
}

.pf-stats__item span {
    display: block;
    margin-top: 4px;
    font-size: 0.8125rem;
    color: var(--pf-muted);
}

.pf-section {
    padding: 64px 0;
}

.pf-section--alt {
    background: var(--pf-surface);
    border-top: 1px solid var(--pf-border);
    border-bottom: 1px solid var(--pf-border);
}

.pf-section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 40px;
}

.pf-section-kicker {
    display: inline-block;
    margin-bottom: 10px;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--pf-accent-dark);
    background: var(--pf-accent-soft);
}

.pf-section-head h2 {
    margin: 0 0 12px;
    font-size: clamp(1.375rem, 3vw, 1.875rem);
    font-weight: 800;
}

.pf-section-head p {
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.85;
    color: var(--pf-muted);
}

.pf-rules-grid {
    display: grid;
    gap: 20px;
}

@media (min-width: 768px) {
    .pf-rules-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pf-rule-card {
    padding: 24px 22px;
    border-radius: var(--pf-radius);
    background: var(--pf-surface);
    border: 1px solid var(--pf-border);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}

.pf-rule-card__step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin-bottom: 14px;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, var(--pf-accent), var(--pf-gold));
}

.pf-rule-card h3 {
    margin: 0 0 10px;
    font-size: 1.0625rem;
    font-weight: 700;
}

.pf-rule-card p {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.75;
    color: var(--pf-muted);
}

.pf-ladder {
    display: grid;
    gap: 16px;
    max-width: 880px;
    margin: 0 auto;
}

.pf-ladder__row {
    display: grid;
    grid-template-columns: 88px 1fr;
    gap: 16px;
    align-items: stretch;
    padding: 20px 22px;
    border-radius: var(--pf-radius);
    background: var(--pf-surface);
    border: 1px solid var(--pf-border);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.pf-ladder__row:hover {
    border-color: rgba(217, 119, 6, 0.35);
    box-shadow: 0 8px 28px rgba(217, 119, 6, 0.08);
}

.pf-ladder__row--ultimate {
    border-color: rgba(217, 119, 6, 0.45);
    background: linear-gradient(135deg, #fffbeb 0%, #fff 100%);
}

.pf-ladder__badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--pf-accent-soft);
    color: var(--pf-accent-dark);
    font-weight: 800;
    font-size: 0.8125rem;
    line-height: 1.3;
    text-align: center;
    padding: 8px;
}

.pf-ladder__row--ultimate .pf-ladder__badge {
    background: linear-gradient(135deg, var(--pf-accent), var(--pf-gold));
    color: #fff;
}

.pf-ladder__body h3 {
    margin: 0 0 8px;
    font-size: 1.0625rem;
    font-weight: 700;
}

.pf-ladder__body p {
    margin: 0;
    font-size: 0.875rem;
    line-height: 1.75;
    color: var(--pf-muted);
}

.pf-ladder__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.pf-ladder__tags span {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--pf-accent-dark);
    background: var(--pf-accent-soft);
}

.pf-verify {
    display: grid;
    gap: 24px;
}

@media (min-width: 900px) {
    .pf-verify {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

.pf-verify__flow {
    padding: 28px 24px;
    border-radius: var(--pf-radius);
    background: var(--pf-surface);
    border: 1px solid var(--pf-border);
}

.pf-verify__flow h3 {
    margin: 0 0 16px;
    font-size: 1.0625rem;
}

.pf-verify__flow ol {
    margin: 0;
    padding-left: 1.25rem;
}

.pf-verify__flow li {
    margin-bottom: 12px;
    font-size: 0.875rem;
    line-height: 1.75;
    color: var(--pf-muted);
}

.pf-verify__flow li strong {
    color: var(--pf-text);
}

.pf-verify__note {
    padding: 24px 22px;
    border-radius: var(--pf-radius);
    background: linear-gradient(135deg, #fffbeb, #fff);
    border: 1px solid rgba(217, 119, 6, 0.25);
}

.pf-verify__note h3 {
    margin: 0 0 12px;
    font-size: 1rem;
    color: var(--pf-accent-dark);
}

.pf-verify__note p,
.pf-verify__note ul {
    margin: 0 0 12px;
    font-size: 0.875rem;
    line-height: 1.75;
    color: var(--pf-muted);
}

.pf-verify__note ul {
    padding-left: 1.25rem;
}

.pf-verify__note li {
    margin-bottom: 8px;
}

.pf-cap-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

@media (min-width: 640px) {
    .pf-cap-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .pf-cap-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.pf-cap {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 20px 18px;
    border-radius: 14px;
    background: var(--pf-surface);
    border: 1px solid var(--pf-border);
    text-decoration: none !important;
    color: inherit;
    transition: border-color 0.2s, transform 0.2s;
}

.pf-cap:hover {
    border-color: rgba(217, 119, 6, 0.35);
    transform: translateY(-2px);
    text-decoration: none !important;
}

.pf-cap__icon {
    font-size: 1.5rem;
    line-height: 1;
}

.pf-cap__label {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--pf-text);
}

.pf-cap__desc {
    font-size: 0.75rem;
    line-height: 1.55;
    color: var(--pf-muted);
}

.pf-cap--core {
    border-color: rgba(217, 119, 6, 0.3);
    background: linear-gradient(180deg, #fffbeb 0%, #fff 100%);
}

.pf-modules {
    display: grid;
    gap: 20px;
}

@media (min-width: 768px) {
    .pf-modules {
        grid-template-columns: repeat(2, 1fr);
    }
}

.pf-module {
    padding: 24px 22px;
    border-radius: var(--pf-radius);
    background: var(--pf-surface);
    border: 1px solid var(--pf-border);
}

.pf-module__head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.pf-module__icon {
    font-size: 1.375rem;
}

.pf-module h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
}

.pf-module ul {
    margin: 0;
    padding-left: 1.1rem;
}

.pf-module li {
    margin-bottom: 6px;
    font-size: 0.8125rem;
    line-height: 1.65;
    color: var(--pf-muted);
}

.pf-faq {
    max-width: 800px;
    margin: 0 auto;
}

.pf-faq details {
    margin-bottom: 12px;
    border-radius: 12px;
    background: var(--pf-surface);
    border: 1px solid var(--pf-border);
    overflow: hidden;
}

.pf-faq summary {
    padding: 18px 20px;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
}

.pf-faq summary::-webkit-details-marker {
    display: none;
}

.pf-faq details[open] summary {
    border-bottom: 1px solid var(--pf-border);
    color: var(--pf-accent-dark);
}

.pf-faq__body {
    padding: 16px 20px 20px;
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--pf-muted);
}

.pf-cta {
    padding: 48px 0 64px;
}

.pf-cta__bar {
    text-align: center;
    padding: 40px 28px;
    border-radius: var(--pf-radius);
    color: #fff;
    background: linear-gradient(135deg, #78350f, #d97706);
    box-shadow: var(--pf-shadow);
}

.pf-cta__bar h3 {
    margin: 0 0 10px;
    font-size: 1.375rem;
}

.pf-cta__bar p {
    margin: 0 0 24px;
    font-size: 0.9375rem;
    opacity: 0.92;
}

.pf-cta__bar a {
    display: inline-block;
    margin: 0 6px 8px;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none !important;
    background: #fff;
    color: var(--pf-accent-dark);
}

.pf-cta__ghost {
    background: transparent !important;
    color: #fff !important;
    border: 1px solid rgba(255, 255, 255, 0.45) !important;
}