/* ============================================================
   IDCGo 授权系统 · 系统授权页（/system-auth）
   仅使用 .sa-* 与既有 .lp-* / .vc-* 命名空间
   ============================================================ */

#plans,
#verify,
#features,
#faq {
    scroll-margin-top: 84px;
}

/* ---------- Hero 信任条 / 证书 ---------- */

.sa-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 9px 22px;
    margin: 26px 0 0;
    padding: 0;
    list-style: none;
}

.sa-trust li {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: rgba(203, 213, 225, .78);
    font-size: 12.5px;
}

.sa-trust .ic {
    width: 14px;
    height: 14px;
    color: #6ee7b7;
}

.sa-cert-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-top: 10px;
}

.sa-cert-grid > div {
    padding: 9px 12px;
    border-radius: 9px;
    background: rgba(255, 255, 255, .03);
    border: 1px solid rgba(148, 163, 184, .12);
    min-width: 0;
}

.sa-cert-grid span {
    display: block;
    font-size: 10px;
    color: rgba(148, 163, 184, .72);
}

.sa-cert-grid b {
    display: block;
    margin-top: 2px;
    font-size: 11.5px;
    font-weight: 600;
    color: #e2e8f0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ---------- 授权套餐 ---------- */

.sa-plans {
    background: #fff;
    padding-bottom: 48px;
}

.sa-plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    align-items: stretch;
}

.sa-plan-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 52px 24px;
    border: 1px dashed var(--ink-200);
    border-radius: 16px;
    background: #fbfcfe;
    text-align: center;
}

.sa-plan-empty .ic {
    width: 28px;
    height: 28px;
    margin-bottom: 4px;
    color: var(--ink-400);
}

.sa-plan-empty b {
    font-size: 15px;
    color: var(--ink-800);
}

.sa-plan-empty p {
    margin: 0;
    font-size: 13px;
    color: var(--ink-500);
}

.sa-plan {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 26px 24px 22px;
    border: 1px solid var(--ink-200);
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 18px 40px -34px rgba(15, 23, 42, .4);
}

.sa-plan.is-featured {
    color: #fff;
    border-color: #0b2f6b;
    background:
        radial-gradient(460px 260px at 100% 0%, rgba(96, 165, 250, .22), transparent 62%),
        linear-gradient(155deg, #0b2f6b 0%, #123f8c 58%, #0b2f6b 100%);
    box-shadow: 0 28px 64px -30px rgba(12, 47, 107, .6);
}

.sa-plan-badge {
    position: absolute;
    top: 18px;
    right: 18px;
    padding: 3px 10px;
    border-radius: 999px;
    background: #fff;
    color: #0b2f6b;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .04em;
}

.sa-plan-pro {
    display: block;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: .2em;
    color: var(--ink-400);
}

.is-featured .sa-plan-pro {
    color: rgba(191, 219, 254, .8);
}

.sa-plan-head h3 {
    margin: 10px 0 6px;
    font-size: 19px;
    font-weight: 750;
    letter-spacing: -.02em;
    color: var(--ink-900);
}

.sa-plan-head h3 span {
    font-size: 15px;
    font-weight: 650;
    color: var(--ink-600);
}

.is-featured .sa-plan-head h3 {
    color: #fff;
}

.is-featured .sa-plan-head h3 span {
    color: #bfdbfe;
}

.sa-plan-head p {
    margin: 0;
    font-size: 12.5px;
    line-height: 1.65;
    color: var(--ink-500);
}

.is-featured .sa-plan-head p {
    color: rgba(203, 213, 225, .74);
}

.sa-plan-price {
    display: flex;
    align-items: baseline;
    gap: 2px;
    margin: 20px 0 4px;
    color: var(--ink-900);
}

.sa-plan-price .sa-cur {
    font-size: 18px;
    font-weight: 700;
}

.sa-plan-price b {
    font-size: 38px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -1.6px;
}

.sa-plan-price .sa-unit {
    margin-left: 4px;
    font-size: 13px;
    color: var(--ink-500);
}

.is-featured .sa-plan-price {
    color: #fff;
}

.is-featured .sa-plan-price .sa-unit {
    color: rgba(203, 213, 225, .72);
}

.sa-plan-meta {
    padding-bottom: 16px;
    border-bottom: 1px dashed var(--ink-200);
    font-size: 12px;
    color: var(--ink-400);
}

.is-featured .sa-plan-meta {
    border-color: rgba(191, 219, 254, .26);
    color: rgba(191, 219, 254, .72);
}

.sa-plan-feats {
    flex: 1;
    margin-top: 16px;
}

.sa-feat + .sa-feat {
    margin-top: 13px;
}

.sa-feat b {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 650;
    color: var(--ink-800);
}

.is-featured .sa-feat b {
    color: #dbeafe;
}

.sa-feat ul {
    display: flex;
    flex-wrap: wrap;
    gap: 5px 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.sa-feat li {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--ink-600);
}

.sa-feat li .ic {
    width: 12px;
    height: 12px;
    color: #16a34a;
}

.is-featured .sa-feat li {
    color: rgba(226, 232, 240, .86);
}

.is-featured .sa-feat li .ic {
    color: #6ee7b7;
}

.sa-plan-btn {
    width: 100%;
    height: 44px;
    margin-top: 20px;
    justify-content: center;
}

.sa-plan-btn-light {
    background: #fff;
    border-color: #fff;
    color: #0b2f6b;
    box-shadow: 0 14px 30px -18px rgba(2, 6, 23, .6);
}

.sa-plan-btn-light:hover {
    background: #eaf2ff;
    border-color: #eaf2ff;
    color: #08264f;
}

.sa-plan-note {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 6px 18px;
    margin-top: 22px;
    text-align: center;
    font-size: 12.5px;
    color: var(--ink-500);
}

.sa-plan-note a {
    color: var(--brand);
    font-weight: 600;
    text-decoration: none;
}

.sa-plan-note a:hover {
    text-decoration: underline;
}

/* ---------- 授权查询 ---------- */

.sa-verify {
    padding: 0 0 12px;
}

/* ---------- 授权权益 ---------- */

.sa-cap-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.sa-cap {
    padding: 22px;
    border: 1px solid var(--ink-200);
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 14px 34px -32px rgba(15, 23, 42, .45);
}

.sa-cap-ico {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 11px;
    background: #eef2ff;
    color: #4f46e5;
}

.sa-cap-ico .ic {
    width: 18px;
    height: 18px;
}

.sa-cap h3 {
    margin: 12px 0 6px;
    font-size: 15.5px;
    font-weight: 700;
    letter-spacing: -.01em;
    color: var(--ink-900);
}

.sa-cap p {
    margin: 0;
    font-size: 12.5px;
    line-height: 1.72;
    color: var(--ink-500);
}

.sa-cap-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
}

.sa-cap-tags span {
    padding: 2px 8px;
    border-radius: 6px;
    background: #f4f7fc;
    border: 1px solid var(--ink-200);
    color: var(--ink-600);
    font-size: 11px;
}

.sa-more {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 26px;
    font-size: 13px;
    color: var(--ink-500);
}

/* ---------- 授权说明 ---------- */

.sa-faq-sec {
    background: #fff;
}

.sa-faq-wrap {
    display: grid;
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 48px;
    align-items: start;
}

.sa-faq-head h2 {
    margin: 10px 0 10px;
    font-size: 30px;
    line-height: 1.24;
    letter-spacing: -.035em;
    font-weight: 750;
    color: var(--ink-900);
}

.sa-faq-head p {
    margin: 0;
    max-width: 360px;
    font-size: 13.5px;
    line-height: 1.85;
    color: var(--ink-500);
}

.sa-faq-list {
    border-top: 1px solid var(--ink-200);
}

.sa-faq {
    border-bottom: 1px solid var(--ink-200);
}

.sa-faq summary {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 2px;
    list-style: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--ink-800);
}

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

.sa-faq summary .ic {
    width: 16px;
    height: 16px;
    margin-left: auto;
    flex: none;
    color: var(--ink-400);
    transition: transform .18s var(--ease), color .18s var(--ease);
}

.sa-faq[open] summary .ic {
    transform: rotate(45deg);
    color: var(--brand);
}

.sa-faq p {
    margin: 0 0 16px;
    padding-right: 26px;
    font-size: 13px;
    line-height: 1.85;
    color: var(--ink-500);
}

/* ---------- 响应式 ---------- */

@media (max-width: 1080px) {
    .sa-plan-grid {
        gap: 14px;
    }

    .sa-plan {
        padding: 24px 20px 20px;
    }

    .sa-plan-price b {
        font-size: 34px;
    }
}

@media (max-width: 980px) {
    .sa-plan-grid {
        grid-template-columns: minmax(0, 1fr);
        max-width: 560px;
        margin: 0 auto;
    }

    .sa-cap-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sa-faq-wrap {
        grid-template-columns: minmax(0, 1fr);
        gap: 20px;
    }

    .sa-faq-head p {
        max-width: 520px;
    }
}

@media (max-width: 640px) {
    .sa-trust {
        gap: 8px 16px;
        margin-top: 22px;
    }

    .sa-plan {
        padding: 22px 18px 20px;
    }

    .sa-plan-badge {
        top: 14px;
        right: 14px;
    }

    .sa-plan-price b {
        font-size: 32px;
    }

    .sa-cap-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 12px;
    }

    .sa-cap {
        padding: 18px;
    }

    .sa-faq-head h2 {
        font-size: 24px;
    }

    .sa-more {
        justify-content: flex-start;
    }
}