/* ============================================================
   attack-trace.css — 网络攻击溯源专题页专属样式
   与 style.css 全局变量完全兼容，不修改全局样式
   ============================================================ */

/* ===== HERO ===== */
.at-hero {
    position: relative;
    min-height: 720px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(180deg, #f0f5ff 0%, #ffffff 100%);
    padding-top: 72px;
}
#atCanvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1;
}
.at-hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: radial-gradient(ellipse at 30% 50%, transparent 0%, rgba(240,245,255,0.2) 50%, rgba(255,255,255,0.5) 100%);
    pointer-events: none;
}
.at-hero-content {
    position: relative;
    z-index: 3;
    max-width: 960px;
    text-align: center;
    padding: 48px 24px;
}
.breadcrumb-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
    font-size: 13px;
    color: var(--text-light);
}
.breadcrumb-nav a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}
.breadcrumb-nav a:hover { text-decoration: underline; }
.at-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(26, 110, 255, 0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: 100px;
    margin-bottom: 24px;
    border: 1px solid rgba(26, 110, 255, 0.15);
    animation: fadeInDown 0.8s ease-out;
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.at-hero h1 {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 900;
    line-height: 1.15;
    color: var(--text);
    margin-bottom: 20px;
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease-out 0.15s both;
}
.at-hero h1 .highlight {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.at-hero-content > p {
    font-size: clamp(15px, 2vw, 18px);
    color: var(--text-secondary);
    max-width: 720px;
    margin: 0 auto 32px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}
.at-hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 36px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}
.at-hero-stats .stat-item { text-align: center; }
.at-hero-stats .stat-number {
    font-size: 36px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    font-variant-numeric: tabular-nums;
}
.at-hero-stats .stat-label {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 8px;
    font-weight: 500;
}

/* ===== DATA INSIGHTS ===== */
.data-insights {
    background: var(--bg-warm);
    padding: 64px 0;
    position: relative;
    overflow: hidden;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.data-insights .container { position: relative; z-index: 1; }
.data-insights .section-header { margin-bottom: 48px; }
.data-insights .section-tag {
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid rgba(26, 110, 255, 0.15);
}
.data-insights .section-title { color: var(--text); }
.data-insights .section-desc { color: var(--text-secondary); }

.insight-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.insight-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.insight-card:hover {
    border-color: rgba(26, 110, 255, 0.2);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
.insight-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--primary-gradient);
    opacity: 0.6;
}
.insight-number {
    font-size: 36px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
    font-variant-numeric: tabular-nums;
}
.insight-number .trend {
    font-size: 13px;
    font-weight: 600;
    margin-left: 6px;
    vertical-align: middle;
}
.insight-number .trend.up { color: #dc2626; }
.insight-number .trend.down { color: #16a34a; }
.insight-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}
.insight-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.6;
}
.insight-source {
    font-size: 11px;
    color: var(--text-light);
    margin-top: 12px;
    font-style: italic;
}

/* ===== PHILOSOPHY ===== */
.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.philosophy-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}
.philosophy-card:hover {
    border-color: rgba(26, 110, 255, 0.2);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
.phi-icon {
    width: 48px; height: 48px;
    background: var(--primary-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}
.phi-icon svg {
    width: 24px; height: 24px;
    color: var(--primary);
}
.philosophy-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}
.philosophy-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== DIRECTION GRID ===== */
.direction-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.direction-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
}
.direction-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}
.direction-card:hover {
    border-color: rgba(26, 110, 255, 0.2);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
.direction-card:hover::before { transform: scaleX(1); }
.direction-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 16px;
}
.direction-card .icon-wrap {
    width: 52px; height: 52px;
    background: var(--primary-light);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.direction-card .icon-wrap svg {
    width: 26px; height: 26px;
    color: var(--primary);
}
.direction-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}
.dir-tag {
    font-size: 11px;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 3px 10px;
    border-radius: 100px;
}
.dir-count {
    font-size: 11px;
    color: var(--text-light);
    font-weight: 500;
}
.direction-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}
.direction-card > p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
}
.direction-card .tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}
.direction-card .tag-list span {
    font-size: 11px;
    color: var(--primary);
    background: var(--primary-light);
    padding: 3px 10px;
    border-radius: 100px;
    font-weight: 500;
}
.direction-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}
.dir-status {
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 100px;
}
.dir-status.active {
    background: #e6f7ed;
    color: #2ea043;
}
.dir-status.planned {
    background: #f0f0f5;
    color: var(--text-light);
}
.direction-card .arrow {
    width: 28px; height: 28px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateX(-8px);
    transition: var(--transition);
}
.direction-card .arrow svg {
    width: 14px; height: 14px;
    color: var(--primary);
}
.direction-card:hover .arrow {
    opacity: 1;
    transform: translateX(0);
}

/* ===== KILL CHAIN DIAGRAM ===== */
.kc-wrap {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 48px 32px;
    position: relative;
    overflow-x: auto;
}
.kc-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.kc-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-width: 110px;
}
.kc-node {
    width: 64px; height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 900;
    color: white;
    position: relative;
    transition: var(--transition);
    cursor: pointer;
}
.kc-node:hover { transform: scale(1.1); }
.kc-node.n1 { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.kc-node.n2 { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.kc-node.n3 { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.kc-node.n4 { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }
.kc-node.n5 { background: linear-gradient(135deg, #fa709a 0%, #fee140 100%); }
.kc-node.n6 { background: linear-gradient(135deg, #30cfd0 0%, #330867 100%); }
.kc-node.n7 { background: linear-gradient(135deg, #ff0844 0%, #ffb199 100%); }
.kc-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--text);
    text-align: center;
    white-space: nowrap;
}
.kc-arrow {
    font-size: 20px;
    color: var(--text-light);
    font-weight: 300;
}
.kc-detail-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 12px;
}
.kc-detail {
    background: var(--bg-warm);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}
.kc-detail:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}
.kc-detail h5 {
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}
.kc-detail p {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== ARCHITECTURE ===== */
.architecture-wrap {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 48px 32px;
    position: relative;
    overflow-x: auto;
}
.arch-level {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.arch-node {
    background: var(--bg-warm);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 20px;
    text-align: center;
    min-width: 120px;
    transition: var(--transition);
}
.arch-node:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}
.arch-root {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    box-shadow: 0 8px 24px rgba(26, 110, 255, 0.3);
    padding: 18px 32px;
}
.arch-root small {
    display: block;
    font-size: 11px;
    opacity: 0.8;
    margin-top: 2px;
    font-weight: 400;
}
.arch-node span {
    font-size: 13px;
    font-weight: 700;
    display: block;
}
.arch-leaf {
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f1ff 100%);
    border-color: rgba(26, 110, 255, 0.2);
    padding: 10px 14px;
    min-width: auto;
}
.arch-leaf span {
    font-size: 12px;
    white-space: nowrap;
}
.arch-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 0;
    position: relative;
}
.arch-line {
    width: 2px;
    height: 24px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
}
.arch-branch-wrap {
    display: flex;
    justify-content: center;
    gap: 120px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
}
.arch-branch {
    width: 1px;
    height: 20px;
    background: var(--border);
    position: relative;
}
.arch-branch::before {
    content: '';
    position: absolute;
    top: 0; left: -60px;
    width: 120px;
    height: 1px;
    background: var(--border);
}
.arch-connector-2 .arch-line {
    height: 32px;
}
.arch-hint {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    padding: 14px 18px;
    background: var(--bg-warm);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-light);
}
.arch-hint svg {
    width: 18px; height: 18px;
    color: var(--primary);
    flex-shrink: 0;
}

/* ===== ACHIEVEMENT TABS ===== */
.achieve-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
    justify-content: center;
}
.achieve-tab {
    padding: 10px 24px;
    border-radius: 100px;
    border: 1.5px solid var(--border);
    background: white;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}
.achieve-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}
.achieve-tab.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 16px rgba(26, 110, 255, 0.3);
}
.achieve-panel {
    display: none;
    animation: fadeIn 0.4s ease;
}
.achieve-panel.active { display: block; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== PAPERS ===== */
.paper-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.paper-item {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.paper-item:hover {
    border-color: rgba(26, 110, 255, 0.2);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}
.paper-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 100px;
    margin-bottom: 10px;
}
.paper-badge.ccf {
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
    color: #4338ca;
}
.paper-badge.core {
    background: #f0fdf4;
    color: #16a34a;
}
.paper-badge.book {
    background: #fff7ed;
    color: #ea580c;
}
.paper-item h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}
.paper-authors {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}
.paper-meta {
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 10px;
}
.paper-abs {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
}
.paper-link {
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.paper-link:hover { text-decoration: underline; }

/* ===== REPORTS ===== */
.report-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.report-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
}
.report-card:hover {
    border-color: rgba(26, 110, 255, 0.2);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}
.report-icon {
    width: 44px; height: 44px;
    background: var(--primary-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}
.report-icon svg {
    width: 22px; height: 22px;
    color: var(--primary);
}
.report-card h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 8px;
}
.report-card > p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
}
.report-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
}
.report-date, .report-tag {
    color: var(--text-light);
    font-weight: 500;
}
.report-tag {
    background: var(--bg-warm);
    padding: 2px 10px;
    border-radius: 100px;
}
.report-meta a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}
.report-meta a:hover { text-decoration: underline; }

/* ===== STANDARDS ===== */
.standard-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.standard-item {
    display: flex;
    gap: 18px;
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
}
.standard-item:hover {
    border-color: rgba(26, 110, 255, 0.2);
    box-shadow: var(--shadow);
}
.std-icon {
    width: 44px; height: 44px;
    background: var(--primary-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.std-icon svg {
    width: 22px; height: 22px;
    color: var(--primary);
}
.std-content { flex: 1; }
.std-content h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
}
.std-content > p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 10px;
}
.std-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.std-status, .std-scope {
    font-size: 11px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 100px;
}
.std-status.draft {
    background: #fff7ed;
    color: #ea580c;
}
.std-status.planned {
    background: #f0f0f5;
    color: var(--text-light);
}
.std-scope {
    background: var(--primary-light);
    color: var(--primary);
}

/* ===== TOOLS ===== */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.tool-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    position: relative;
}
.tool-card:hover {
    border-color: rgba(26, 110, 255, 0.2);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}
.tool-icon {
    width: 44px; height: 44px;
    background: var(--primary-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}
.tool-icon svg {
    width: 22px; height: 22px;
    color: var(--primary);
}
.tool-card h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
}
.tool-card > p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}
.tool-tag {
    font-size: 11px;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 3px 10px;
    border-radius: 100px;
}

/* ===== ROADMAP ===== */
.roadmap-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}
.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0; bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 50%, var(--border) 100%);
}
.roadmap-item {
    position: relative;
    padding-left: 60px;
    padding-bottom: 40px;
}
.roadmap-item:last-child { padding-bottom: 0; }
.roadmap-dot {
    position: absolute;
    left: 11px;
    top: 4px;
    width: 18px; height: 18px;
    background: white;
    border: 3px solid var(--border);
    border-radius: 50%;
    transition: var(--transition);
}
.roadmap-item.done .roadmap-dot {
    border-color: var(--primary);
    background: var(--primary);
}
.roadmap-item.active .roadmap-dot {
    border-color: var(--primary);
    background: var(--primary);
    box-shadow: 0 0 0 5px rgba(26, 110, 255, 0.15);
    animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 5px rgba(26, 110, 255, 0.15); }
    50% { box-shadow: 0 0 0 8px rgba(26, 110, 255, 0.08); }
}
.roadmap-content {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
}
.roadmap-content:hover {
    border-color: rgba(26, 110, 255, 0.2);
    box-shadow: var(--shadow);
}
.roadmap-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.phase {
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 100px;
}
.status {
    font-size: 11px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 100px;
}
.status.done {
    background: #e6f7ed;
    color: #2ea043;
}
.status.ongoing {
    background: #fff7ed;
    color: #f57c00;
}
.status.planned {
    background: #f0f0f5;
    color: var(--text-light);
}
.time {
    font-size: 12px;
    color: var(--text-light);
    margin-left: auto;
    font-weight: 500;
}
.roadmap-content h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}
.roadmap-content > p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}
.roadmap-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.roadmap-topics span {
    font-size: 12px;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 100px;
    font-weight: 500;
}

/* ===== CASE STUDIES ===== */
.case-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.case-item {
    display: flex;
    gap: 24px;
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}
.case-item:hover {
    border-color: rgba(26, 110, 255, 0.2);
    box-shadow: var(--shadow-hover);
}
.case-timeline {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    min-width: 80px;
}
.case-date {
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 100px;
    white-space: nowrap;
}
.case-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
    min-height: 40px;
}
.case-content { flex: 1; }
.case-content h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}
.case-content > p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 10px;
}
.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.case-tags span {
    font-size: 11px;
    color: var(--primary);
    background: var(--primary-light);
    padding: 3px 10px;
    border-radius: 100px;
    font-weight: 500;
}

/* ===== CONTACT BOX ===== */
.contact-box {
    background: var(--primary-gradient);
    border-radius: var(--radius);
    padding: 60px 48px;
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.contact-bg {
    position: absolute;
    top: -50%; right: -20%;
    width: 400px; height: 400px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}
.contact-content {
    position: relative;
    z-index: 1;
}
.contact-box h3 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 12px;
}
.contact-box p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    max-width: 520px;
    margin: 0 auto 28px;
    line-height: 1.8;
}
.contact-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}
.contact-btn-primary {
    background: white;
    color: var(--primary);
}
.contact-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.contact-btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}
.contact-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* ===== SUB TOPIC HERO ===== */
.sub-hero {
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(180deg, #f0f5ff 0%, #ffffff 100%);
    padding-top: 72px;
}
.sub-hero-content {
    position: relative;
    z-index: 3;
    max-width: 900px;
    text-align: center;
    padding: 48px 24px;
}
.sub-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(26, 110, 255, 0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: 100px;
    margin-bottom: 20px;
    border: 1px solid rgba(26, 110, 255, 0.15);
}
.sub-hero h1 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 900;
    line-height: 1.15;
    color: var(--text);
    margin-bottom: 16px;
    letter-spacing: -1px;
}
.sub-hero p {
    font-size: clamp(14px, 2vw, 17px);
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ===== SUB TOPIC CONTENT ===== */
.content-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    align-items: start;
}
.content-sidebar {
    position: sticky;
    top: 96px;
}
.sidebar-nav {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}
.sidebar-nav h4 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.sidebar-nav ul { list-style: none; }
.sidebar-nav li { margin-bottom: 4px; }
.sidebar-nav a {
    display: block;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}
.sidebar-nav a:hover, .sidebar-nav a.active {
    color: var(--primary);
    background: var(--primary-light);
}
.content-main { min-width: 0; }
.content-section {
    margin-bottom: 48px;
}
.content-section h2 {
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}
.content-section h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    margin: 28px 0 12px;
}
.content-section p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}
.content-section ul, .content-section ol {
    margin-left: 20px;
    margin-bottom: 16px;
}
.content-section li {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 8px;
}
.content-section strong { color: var(--text); }
.info-box {
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 20px 24px;
    margin: 20px 0;
}
.info-box p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}
.info-box p strong { color: var(--primary); }

/* ===== MOBILE ===== */
@media (max-width: 1024px) {
    .philosophy-grid { grid-template-columns: repeat(2, 1fr); }
    .direction-grid { grid-template-columns: repeat(2, 1fr); }
    .paper-list { grid-template-columns: 1fr; }
    .report-grid { grid-template-columns: repeat(2, 1fr); }
    .tool-grid { grid-template-columns: repeat(2, 1fr); }
    .insight-grid { grid-template-columns: repeat(2, 1fr); }
    .kc-detail-grid { grid-template-columns: repeat(4, 1fr); }
    .arch-level-3 { display: none; }
    .arch-connector-2 { display: none; }
    .arch-hint { margin-top: 16px; }
    .content-grid { grid-template-columns: 1fr; }
    .content-sidebar { position: static; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0; right: 0;
        background: white;
        flex-direction: column;
        padding: 16px 24px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        gap: 4px;
        border-bottom: 1px solid var(--border);
    }
    .nav-links.active { display: flex; }
    .mobile-toggle { display: flex; }
    .at-hero { min-height: 480px; padding-top: 96px; }
    .at-hero h1 { font-size: clamp(26px, 7vw, 36px); }
    .at-hero-stats { gap: 24px; margin-top: 28px; }
    .at-hero-stats .stat-number { font-size: 28px; }
    .philosophy-grid { grid-template-columns: 1fr; }
    .direction-grid { grid-template-columns: 1fr; }
    .report-grid { grid-template-columns: 1fr; }
    .tool-grid { grid-template-columns: 1fr; }
    .insight-grid { grid-template-columns: 1fr; }
    .kc-flow { gap: 4px; }
    .kc-step { min-width: 80px; }
    .kc-node { width: 48px; height: 48px; font-size: 16px; }
    .kc-detail-grid { grid-template-columns: repeat(2, 1fr); }
    .standard-item { flex-direction: column; gap: 12px; }
    .contact-box { padding: 40px 24px; }
    .contact-box h3 { font-size: 22px; }
    .contact-actions { flex-direction: column; align-items: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .section { padding: 48px 0; }
    .arch-level-2 { gap: 8px; }
    .arch-node { padding: 10px 14px; min-width: auto; }
    .arch-node span { font-size: 12px; }
    .case-item { flex-direction: column; gap: 16px; }
    .case-timeline { flex-direction: row; min-width: auto; }
    .case-line { width: 40px; height: 2px; min-height: auto; }
}


/* ============================================================
   APT子课题扩展样式（分页版） — 追加于 attack-trace.css
   ============================================================ */
.breadcrumb-wrap{padding:22px 0 0}
.breadcrumb-wrap .breadcrumb{margin-bottom:0}

/* 分页器 */
.apt-pager{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px 20px;margin:0 0 32px;box-shadow:var(--shadow)}
.apt-pager.bottom{margin:48px 0 0}
.pager-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:10px;border:1.5px solid var(--border);color:var(--text-secondary);font-size:13.5px;font-weight:600;text-decoration:none;transition:var(--transition);background:var(--bg-warm)}
.pager-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.pager-btn.primary{background:var(--primary-gradient);color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(26,110,255,.25)}
.pager-btn.primary:hover{transform:translateY(-2px);color:#fff}
.pager-steps{display:flex;gap:6px;align-items:center}
.pager-steps .p-label{font-size:12px;color:var(--text-light);margin-right:4px}
.pager-steps a{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:50%;border:1.5px solid var(--border);font-size:13px;font-weight:700;color:var(--text-secondary);text-decoration:none;transition:var(--transition)}
.pager-steps a:hover{border-color:var(--primary);color:var(--primary)}
.pager-steps a.active{background:var(--primary-gradient);color:#fff;border-color:transparent;box-shadow:0 4px 10px rgba(26,110,255,.3)}
.mini-pager{margin-top:16px;padding-top:14px;border-top:1px dashed var(--border)}
.mini-pager a{display:flex;align-items:center;gap:8px;padding:7px 12px;border-radius:8px;font-size:13px;color:var(--text-secondary);text-decoration:none;font-weight:500;transition:var(--transition)}
.mini-pager a:hover,.mini-pager a.active{color:var(--primary);background:var(--primary-light)}
.mini-pager a .js-icon svg{width:14px;height:14px}

/* JS图标基础 */
.js-icon{display:inline-flex;align-items:center;justify-content:center;line-height:0}
.js-icon svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* 关键指标卡 */
.kv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:24px 0}
.kv-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;position:relative;overflow:hidden;transition:var(--transition)}
.kv-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--primary-gradient);opacity:.55}
.kv-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.kv-num{font-size:30px;font-weight:900;color:var(--primary);line-height:1;font-variant-numeric:tabular-nums}
.kv-num small{font-size:14px;font-weight:600;margin-left:4px}
.kv-label{font-size:13.5px;font-weight:700;margin-top:8px;color:var(--text)}
.kv-desc{font-size:12px;color:var(--text-secondary);margin-top:4px;line-height:1.6}

/* 数据表 */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);margin:20px 0;-webkit-overflow-scrolling:touch}
table.data-table{width:100%;border-collapse:collapse;font-size:13px;min-width:660px}
.data-table th{background:var(--primary-light);color:var(--primary-dark);font-weight:700;text-align:left;padding:12px 14px;white-space:nowrap;border-bottom:2px solid rgba(26,110,255,.15);font-size:12.5px}
.data-table td{padding:11px 14px;border-bottom:1px solid var(--border);color:var(--text-secondary);vertical-align:top;line-height:1.65}
.data-table tr:last-child td{border-bottom:none}
.data-table tbody tr{transition:var(--transition)}
.data-table tbody tr:hover{background:var(--bg-warm)}
.data-table td strong{color:var(--text)}
.data-table .grp td{background:var(--bg-warm);color:var(--primary-dark);font-weight:800;font-size:12.5px;letter-spacing:.5px}
.t-id{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;background:var(--bg-warm);border:1px solid var(--border);padding:2px 8px;border-radius:6px;white-space:nowrap}

/* 图表 */
.figure-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin:20px 0;box-shadow:var(--shadow)}
.figure-title{font-size:15px;font-weight:800;margin-bottom:4px;display:flex;align-items:center;gap:8px;color:var(--text)}
.figure-title .js-icon svg{width:18px;height:18px;color:var(--primary)}
.figure-sub{font-size:12px;color:var(--text-light);margin-bottom:14px}
.figure-box canvas{width:100%;display:block}
.figure-src{font-size:11px;color:var(--text-light);margin-top:12px;font-style:italic}
.chart-legend{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:12px}
.chart-legend span{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary)}
.chart-legend i{width:10px;height:10px;border-radius:3px;display:inline-block}

/* 别名标签 */
.alias-tags{display:flex;flex-wrap:wrap;gap:6px}
.alias-tags span{font-size:11px;background:var(--bg-warm);border:1px solid var(--border);padding:3px 10px;border-radius:100px;color:var(--text-secondary);font-family:ui-monospace,Menlo,Consolas,monospace}

/* 深度剖析卡 */
.profile-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;margin-bottom:24px;transition:var(--transition);position:relative;overflow:hidden}
.profile-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary-gradient)}
.profile-card:hover{box-shadow:var(--shadow-hover)}
.profile-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:6px;flex-wrap:wrap}
.profile-avatar{width:52px;height:52px;border-radius:14px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.profile-avatar .js-icon svg{width:26px;height:26px;color:var(--primary)}
.profile-head h3{font-size:19px;font-weight:800;margin-bottom:4px;color:var(--text)}
.profile-sub{font-size:12.5px;color:var(--text-light)}
.profile-meta{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 4px}
.profile-meta span{font-size:11px;font-weight:600;padding:3px 10px;border-radius:100px;background:var(--primary-light);color:var(--primary)}
.profile-meta span.warn{background:var(--warning-light);color:var(--warning)}
.profile-card h4{font-size:14.5px;margin:18px 0 8px;color:var(--primary-dark);display:flex;align-items:center;gap:6px}
.profile-card h4 .js-icon svg{width:16px;height:16px}
.profile-card p{font-size:13.5px;color:var(--text-secondary);line-height:1.8;margin-bottom:10px}
.profile-card ul{margin-left:18px;margin-bottom:10px}
.profile-card li{font-size:13px;color:var(--text-secondary);line-height:1.75;margin-bottom:6px}

/* 参考文献 */
.ref-list{list-style:none;counter-reset:ref;display:flex;flex-direction:column;gap:12px;margin:20px 0}
.ref-list li{counter-increment:ref;position:relative;padding-left:40px;font-size:13px;color:var(--text-secondary);line-height:1.75}
.ref-list li::before{content:counter(ref,decimal-leading-zero);position:absolute;left:0;top:2px;width:26px;height:26px;background:var(--primary-light);color:var(--primary);font-size:11.5px;font-weight:800;border-radius:8px;display:flex;align-items:center;justify-content:center}
.ref-list a{color:var(--primary);text-decoration:none;word-break:break-all}
.ref-list a:hover{text-decoration:underline}

/* 警示框 */
.warn-box{background:var(--warning-light);border-left:4px solid var(--warning);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:18px 22px;margin:20px 0}
.warn-box p{font-size:13.5px;color:#7c4a2d;margin:0;line-height:1.75}
.warn-box p strong{color:var(--warning)}

/* 金字塔 */
.pain-pyramid{display:flex;flex-direction:column;align-items:center;gap:5px;margin:24px 0}
.pain-layer{height:46px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px;border-radius:8px;transition:var(--transition);box-shadow:0 3px 10px rgba(0,0,0,.08)}
.pain-layer small{font-weight:500;opacity:.88;margin-left:8px;font-size:11px}
.pain-layer:hover{transform:scale(1.02)}

/* 小节标题图标 */
.content-section h2 .js-icon svg{width:22px;height:22px;vertical-align:-4px;margin-right:8px;color:var(--primary)}
.content-section h3 .js-icon svg{width:17px;height:17px;vertical-align:-3px;margin-right:6px;color:var(--primary)}

/* 来源内联 */
.src-note{font-size:12px;color:var(--text-light);margin-top:-8px;margin-bottom:14px}
.content-section a{color:var(--primary);text-decoration:none}
.content-section a:hover{text-decoration:underline}
.src-pill{display:inline-block;font-size:11px;font-weight:600;color:var(--primary);background:var(--primary-light);padding:2px 10px;border-radius:100px;margin-left:6px;vertical-align:1px}

@media (max-width:1024px){
    .kv-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
    .kv-grid{grid-template-columns:repeat(2,1fr);gap:12px}
    .kv-num{font-size:24px}
    .apt-pager{justify-content:center}
    .pager-steps{order:3;width:100%;justify-content:center}
    table.data-table{font-size:12px;min-width:560px}
    .data-table th,.data-table td{padding:9px 10px}
    .profile-card{padding:20px}
    .figure-box{padding:16px}
    .pain-layer{height:40px;font-size:12px}
}


/* ===== 头像对齐统一（2026-09-05 修正） ===== */
.profile-head{align-items:center;margin-bottom:10px}
.profile-head>div:not(.profile-avatar){flex:1;min-width:200px}
.profile-avatar{flex-shrink:0}
.profile-avatar .js-icon svg{width:26px;height:26px;color:var(--primary);stroke-width:2}
.profile-card h4 .js-icon{display:inline-flex}
.pager-btn .js-icon svg{width:16px;height:16px}
.figure-title .js-icon svg{width:18px;height:18px;color:var(--primary)}
.mini-pager .js-icon svg{width:14px;height:14px;color:var(--primary)}
@media (max-width:768px){
    .profile-head{gap:10px}
    .profile-avatar{width:44px;height:44px;border-radius:12px}
    .profile-avatar .js-icon svg{width:22px;height:22px}
}