/* ============================================================
   about.css — 关于铁蛋电竞（编辑式不对称分栏）
   前缀 ab-
   左：粘性叙事栏；右：时间线 / 徽章墙 / 价值观交错
   ============================================================ */

.ab-stage {
    background:
        radial-gradient(circle at 12% 0%, var(--orange-100), transparent 40%),
        var(--ink-50);
    padding: 40px 0 80px;
}

.ab-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 56px;
    align-items: start;
}

/* ---------- 左：粘性叙事栏 ---------- */
.ab-rail {
    position: sticky;
    top: calc(var(--head-h) + 24px);
}
.ab-rail-inner {
    background: #fff;
    border: 1px solid var(--ink-200);
    border-radius: var(--radius-lg);
    padding: 34px 30px;
    box-shadow: var(--shadow-sm);
}
.ab-eyebrow { margin-bottom: 18px; }

.ab-title {
    font-size: 34px;
    line-height: 1.25;
    font-weight: 800;
    letter-spacing: .5px;
}
.ab-title em {
    font-style: normal;
    color: var(--orange-600);
    position: relative;
}
.ab-title em::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: 4px;
    height: 10px;
    background: var(--orange-100);
    z-index: -1;
    border-radius: 3px;
}

.ab-lead {
    margin-top: 20px;
    color: var(--ink-700);
    font-size: 14.5px;
    line-height: 1.9;
}
.ab-lead strong { color: var(--orange-700); }

.ab-sign {
    margin-top: 26px;
    padding-top: 22px;
    border-top: 1px dashed var(--ink-200);
    display: flex;
    align-items: flex-start;
    gap: 14px;
}
.ab-sign-line {
    width: 4px;
    height: 42px;
    background: linear-gradient(180deg, var(--orange-500), var(--orange-700));
    border-radius: 2px;
    flex-shrink: 0;
}
.ab-sign-text {
    font-size: 13.5px;
    color: var(--ink-700);
    font-weight: 600;
    line-height: 1.7;
}
.ab-sign-text small {
    display: block;
    color: var(--ink-400);
    font-weight: 400;
    font-size: 12px;
    margin-top: 2px;
}

/* 签名式数据 */
.ab-stats {
    margin-top: 26px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.ab-stat {
    background: var(--orange-50);
    border: 1px solid var(--orange-100);
    border-radius: var(--radius);
    padding: 14px 14px 12px;
}
.ab-stat-num {
    font-size: 24px;
    font-weight: 800;
    color: var(--orange-700);
    line-height: 1.1;
}
.ab-stat-label {
    margin-top: 6px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--ink-900);
}
.ab-stat-note {
    margin-top: 2px;
    font-size: 11.5px;
    color: var(--ink-500);
}

.ab-rail-cta {
    margin-top: 26px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.ab-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 20px;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 14px;
    transition: all .18s ease;
}
.ab-btn-solid {
    background: linear-gradient(135deg, var(--orange-500), var(--orange-700));
    color: #fff;
    box-shadow: 0 6px 14px rgba(234, 88, 12, .3);
}
.ab-btn-solid:hover { color: #fff; transform: translateY(-1px); }
.ab-btn-ghost {
    border: 1.5px solid var(--ink-200);
    color: var(--ink-700);
    background: #fff;
}
.ab-btn-ghost:hover { border-color: var(--orange-400); color: var(--orange-700); }

/* ---------- 右：主栏 ---------- */
.ab-main {
    min-width: 0;
}
.ab-block {
    margin-bottom: 48px;
}
.ab-block-head {
    margin-bottom: 22px;
    padding-left: 16px;
    border-left: 4px solid var(--orange-600);
}
.ab-block-title {
    font-size: 24px;
    font-weight: 800;
}
.ab-block-sub {
    margin-top: 6px;
    color: var(--ink-500);
    font-size: 13.5px;
}

/* ---------- 时间线 ---------- */
.ab-timeline {
    position: relative;
    padding-left: 30px;
}
.ab-timeline::before {
    content: "";
    position: absolute;
    left: 8px; top: 6px; bottom: 6px;
    width: 2px;
    background: linear-gradient(180deg, var(--orange-300), var(--orange-600) 60%, var(--orange-200));
    border-radius: 2px;
}
.ab-tl-item {
    position: relative;
    padding-bottom: 26px;
}
.ab-tl-item:last-child { padding-bottom: 0; }
.ab-tl-dot {
    position: absolute;
    left: -30px;
    top: 18px;
    width: 18px; height: 18px;
    background: #fff;
    border: 4px solid var(--orange-600);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--orange-100);
}
.ab-tl-card {
    background: #fff;
    border: 1px solid var(--ink-200);
    border-radius: var(--radius);
    padding: 18px 22px;
    transition: all .2s ease;
}
.ab-tl-card:hover {
    border-color: var(--orange-300);
    box-shadow: var(--shadow-sm);
    transform: translateX(3px);
}
.ab-tl-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}
.ab-tl-year {
    font-size: 13px;
    font-weight: 800;
    color: var(--orange-700);
    letter-spacing: .5px;
}
.ab-tl-tag {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 10px;
    background: var(--orange-100);
    color: var(--orange-800);
    border-radius: var(--radius-pill);
}
.ab-tl-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
}
.ab-tl-body {
    color: var(--ink-700);
    font-size: 13.8px;
    line-height: 1.85;
}

/* ---------- 徽章墙 ---------- */
.ab-badge-wall {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.ab-badge {
    background: #fff;
    border: 1px solid var(--ink-200);
    border-radius: var(--radius);
    padding: 22px 18px 18px;
    text-align: center;
    transition: all .2s ease;
    position: relative;
    overflow: hidden;
}
.ab-badge::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: linear-gradient(90deg, var(--orange-400), var(--orange-600));
    opacity: 0;
    transition: opacity .2s;
}
.ab-badge:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
    border-color: var(--orange-200);
}
.ab-badge:hover::before { opacity: 1; }
.ab-badge-ico {
    font-size: 30px;
    margin-bottom: 10px;
}
.ab-badge-name {
    font-size: 14.5px;
    font-weight: 800;
    color: var(--ink-900);
}
.ab-badge-desc {
    margin-top: 5px;
    font-size: 12px;
    color: var(--ink-500);
}

/* ---------- 价值观交错块 ---------- */
.ab-values {
    display: grid;
    gap: 18px;
}
.ab-value {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 20px;
    align-items: center;
    background: #fff;
    border: 1px solid var(--ink-200);
    border-radius: var(--radius-lg);
    padding: 24px 26px;
}
.ab-value--right {
    grid-template-columns: 1fr 80px;
}
.ab-value--right .ab-value-no { order: 2; }
.ab-value--right .ab-value-body { order: 1; text-align: right; }
.ab-value-no {
    font-size: 38px;
    font-weight: 800;
    font-style: italic;
    color: var(--orange-600);
    line-height: 1;
    opacity: .85;
}
.ab-value-title {
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 6px;
}
.ab-value-text {
    color: var(--ink-700);
    font-size: 13.8px;
    line-height: 1.85;
}

/* ---------- 继续了解 ---------- */
.ab-more-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.ab-more-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: #fff;
    border: 1px solid var(--ink-200);
    border-radius: var(--radius);
    padding: 16px 18px;
    transition: all .2s;
}
.ab-more-card:hover {
    border-color: var(--orange-400);
    background: var(--orange-50);
    transform: translateY(-2px);
}
.ab-more-ico {
    font-size: 26px;
    width: 46px; height: 46px;
    display: grid; place-items: center;
    background: var(--orange-100);
    border-radius: 12px;
    flex-shrink: 0;
}
.ab-more-card h3 {
    font-size: 15px;
    font-weight: 800;
    color: var(--ink-900);
}
.ab-more-card p {
    margin-top: 3px;
    font-size: 12.5px;
    color: var(--ink-500);
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
    .ab-layout {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .ab-rail {
        position: static;
    }
    .ab-title { font-size: 28px; }
    .ab-badge-wall { grid-template-columns: repeat(2, 1fr); }
    .ab-more-grid { grid-template-columns: 1fr; }
    .ab-value,
    .ab-value--right {
        grid-template-columns: 60px 1fr;
    }
    .ab-value--right .ab-value-no { order: 0; }
    .ab-value--right .ab-value-body { order: 1; text-align: left; }
}

@media (max-width: 640px) {
    .ab-stage { padding: 24px 0 56px; }
    .ab-rail-inner { padding: 24px 20px; }
    .ab-title { font-size: 24px; }
    .ab-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
    .ab-stat-num { font-size: 20px; }
    .ab-badge-wall { grid-template-columns: 1fr; }
    .ab-timeline { padding-left: 22px; }
    .ab-tl-dot { left: -22px; width: 14px; height: 14px; border-width: 3px; }
    .ab-tl-card { padding: 14px 16px; }
    .ab-value {
        grid-template-columns: 1fr !important;
        padding: 18px;
        gap: 10px;
    }
    .ab-value-no { font-size: 28px; }
    .ab-block-title { font-size: 20px; }
}