/* ===== 烽火征程·中国近现代战争史少年版 ===== */
/* 庄重军绿风 - 做旧牛皮纸+军绿+暗红 */

:root {
    --color-olive: #3D4A2A;
    --color-olive-light: #5A6B3D;
    --color-paper: #D4C5A0;
    --color-paper-light: #E8DCC0;
    --color-paper-dark: #B5A680;
    --color-red: #8B2E2E;
    --color-red-dark: #6B1E1E;
    --color-text: #2A2418;
    --color-text-light: #5A5040;
    --color-white: #FAF7F0;
    --shadow-card: 0 4px 16px rgba(61,74,42,0.15);
    --shadow-card-hover: 0 8px 32px rgba(61,74,42,0.25);
    --radius: 18px;
    --radius-sm: 12px;
    --max-width: 1100px;
}

* { margin:0; padding:0; box-sizing:border-box; }

html { scroll-behavior:smooth; }

body {
    font-family: "PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
    background: var(--color-paper);
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(61,74,42,0.04) 39px, rgba(61,74,42,0.04) 40px),
        repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(61,74,42,0.04) 39px, rgba(61,74,42,0.04) 40px),
        radial-gradient(ellipse at top, var(--color-paper-light), var(--color-paper));
    color: var(--color-text);
    line-height: 1.8;
    font-size: 16px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed; top:0; left:0; right:0;
    height: 64px;
    background: rgba(61,74,42,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 2px solid var(--color-red);
    z-index: 1000;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 24px;
}
.navbar-logo {
    color: var(--color-paper);
    font-size: 20px; font-weight: 700;
    letter-spacing: 2px;
    text-decoration: none;
    display: flex; align-items: center; gap: 8px;
}
.navbar-logo .star { color: var(--color-red); font-size: 24px; }
.navbar-menu {
    display: flex; gap: 28px;
    list-style: none;
}
.navbar-menu a {
    color: var(--color-paper-light);
    text-decoration: none;
    font-size: 15px; font-weight: 500;
    transition: color 0.2s;
    position: relative;
}
.navbar-menu a:hover { color: var(--color-white); }
.navbar-menu a::after {
    content:''; position:absolute; bottom:-4px; left:0;
    width:0; height:2px; background:var(--color-red);
    transition: width 0.3s;
}
.navbar-menu a:hover::after { width:100%; }
.navbar-toggle { display:none; }

/* ===== 首页 Hero ===== */
.hero {
    min-height: 100vh;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    text-align: center;
    padding: 80px 24px 60px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content:'';
    position:absolute; inset:0;
    background: 
        radial-gradient(circle at 30% 20%, rgba(139,46,46,0.08), transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(61,74,42,0.12), transparent 50%);
    z-index:0;
}
.hero-content { position: relative; z-index:1; max-width: 800px; }
.hero-badge {
    display: inline-block;
    background: var(--color-olive);
    color: var(--color-paper);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 14px;
    letter-spacing: 3px;
    margin-bottom: 24px;
    border: 1px solid var(--color-red);
}
.hero-title {
    font-size: 56px;
    font-weight: 800;
    color: var(--color-olive);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 16px;
    line-height: 1.2;
}
.hero-subtitle {
    font-size: 20px;
    color: var(--color-text-light);
    margin-bottom: 12px;
    line-height: 1.6;
}
.hero-quote {
    font-size: 16px;
    color: var(--color-red);
    font-style: italic;
    margin-top: 24px;
    border-left: 3px solid var(--color-red);
    padding-left: 16px;
    text-align: left;
    max-width: 600px;
    margin-left: auto; margin-right: auto;
}

/* ===== 首页时期卡片 ===== */
.period-cards {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 40px 24px 80px;
}
.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: var(--color-olive);
    margin-bottom: 40px;
    position: relative;
}
.section-title::after {
    content:'';
    display:block;
    width: 60px; height: 3px;
    background: var(--color-red);
    margin: 12px auto 0;
    border-radius: 2px;
}
.period-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.period-card {
    background: var(--color-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    display: block;
    border: 1px solid rgba(61,74,42,0.1);
}
.period-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-olive);
}
.period-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    border-bottom: 2px solid var(--color-olive);
}
.period-card-body { padding: 24px; }
.period-card-tag {
    display: inline-block;
    background: var(--color-olive);
    color: var(--color-paper);
    padding: 4px 14px;
    border-radius: 12px;
    font-size: 13px;
    margin-bottom: 12px;
}
.period-card-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-olive);
    margin-bottom: 8px;
}
.period-card-years {
    font-size: 14px;
    color: var(--color-red);
    font-weight: 600;
    margin-bottom: 10px;
}
.period-card-desc {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ===== 英雄墙 ===== */
.heroes-wall {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px 80px;
}
.heroes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}
.hero-card {
    background: var(--color-white);
    border-radius: var(--radius-sm);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s;
    border-top: 3px solid var(--color-red);
}
.hero-card:hover { transform: translateY(-4px); }
.hero-card-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-olive);
    margin-bottom: 6px;
}
.hero-card-period {
    font-size: 13px;
    color: var(--color-red);
    margin-bottom: 8px;
}
.hero-card-deed {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* ===== 时间轴总览 ===== */
.timeline-overview {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px 80px;
}
.timeline-bar {
    position: relative;
    padding: 40px 0 60px;
}
.timeline-line {
    position: absolute;
    left: 0; right: 0;
    top: 50%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-olive), var(--color-red), var(--color-olive));
    border-radius: 2px;
}
.timeline-points {
    display: flex;
    justify-content: space-between;
    position: relative;
    flex-wrap: nowrap;
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px;
}
.timeline-points::-webkit-scrollbar {
    height: 4px;
}
.timeline-points::-webkit-scrollbar-thumb {
    background: var(--color-olive);
    border-radius: 2px;
}
.timeline-point {
    text-align: center;
    flex: 0 0 auto;
    min-width: 90px;
}
.timeline-dot {
    width: 14px; height: 14px;
    background: var(--color-red);
    border-radius: 50%;
    margin: 0 auto 8px;
    border: 3px solid var(--color-paper);
    box-shadow: 0 0 0 2px var(--color-olive);
}
.timeline-label {
    font-size: 12px;
    color: var(--color-text-light);
    margin-top: 8px;
}
.timeline-year {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-olive);
}

/* ===== 时期页布局（方案C：全宽阅读） ===== */
.period-page {
    padding-top: 64px;
    min-height: 100vh;
}

/* 时间轴导航条 - sticky在顶部 */
.timeline-nav {
    position: sticky;
    top: 64px;
    z-index: 50;
    background: var(--color-olive);
    padding: 12px 24px;
    overflow-x: auto;
    white-space: nowrap;
    display: flex;
    gap: 10px;
    border-bottom: 2px solid var(--color-red);
    -webkit-overflow-scrolling: touch;
}
.timeline-nav a {
    color: var(--color-paper-light);
    text-decoration: none;
    font-size: 14px;
    padding: 6px 16px;
    border-radius: 16px;
    border: 1px solid rgba(212,197,160,0.3);
    transition: all 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}
.timeline-nav a:hover {
    background: rgba(139,46,46,0.3);
    color: var(--color-white);
}
.timeline-nav a.active {
    background: var(--color-red);
    color: var(--color-white);
    border-color: var(--color-red);
    font-weight: 600;
}

/* ===== 战役详情页（全宽居中） ===== */
.battle-detail {
    padding: 40px 24px 40px;
    max-width: 860px;
    margin: 0 auto;
}
.battle-header {
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--color-olive);
}
.battle-tag {
    display: inline-block;
    background: var(--color-red);
    color: var(--color-paper);
    padding: 4px 16px;
    border-radius: 12px;
    font-size: 13px;
    margin-bottom: 12px;
}
.battle-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--color-olive);
    margin-bottom: 8px;
    line-height: 1.2;
}
.battle-meta {
    font-size: 14px;
    color: var(--color-text-light);
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

/* 6板块 */
.battle-section {
    margin-bottom: 40px;
    scroll-margin-top: 80px;
}
.section-num {
    display: inline-flex;
    align-items: center; justify-content: center;
    width: 36px; height: 36px;
    background: var(--color-olive);
    color: var(--color-paper);
    border-radius: 50%;
    font-size: 16px; font-weight: 700;
    margin-right: 12px;
    flex-shrink: 0;
}
.battle-section h3 {
    display: flex; align-items: center;
    font-size: 22px;
    font-weight: 700;
    color: var(--color-olive);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(61,74,42,0.2);
}
.battle-section p {
    font-size: 16px;
    line-height: 2;
    margin-bottom: 14px;
    color: var(--color-text);
}
.battle-section p strong {
    color: var(--color-red-dark);
    font-weight: 600;
}

/* 战役配图 */
.battle-img {
    width: 100%;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card);
    margin: 20px 0;
    border: 1px solid rgba(61,74,42,0.15);
}
.battle-img-caption {
    text-align: center;
    font-size: 13px;
    color: var(--color-text-light);
    margin-top: -12px;
    margin-bottom: 20px;
    font-style: italic;
}
.battle-img-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 20px 0;
}
.battle-img-row img {
    width: 100%;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(61,74,42,0.15);
}

/* 将星卡片 */
.commander-card {
    background: var(--color-white);
    border-radius: var(--radius-sm);
    padding: 20px;
    margin: 16px 0;
    box-shadow: var(--shadow-card);
    border-left: 4px solid var(--color-olive);
}
.commander-card.enemy { border-left-color: var(--color-red); }
.commander-name {
    font-size: 18px; font-weight: 700;
    color: var(--color-olive);
    margin-bottom: 6px;
}
.commander-card.enemy .commander-name { color: var(--color-red-dark); }
.commander-style {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.8;
}
.commander-fun {
    background: rgba(139,46,46,0.06);
    border-radius: 8px;
    padding: 10px 14px;
    margin-top: 10px;
    font-size: 14px;
    color: var(--color-text);
    line-height: 1.6;
}
.commander-fun::before {
    content: '趣闻：';
    color: var(--color-red);
    font-weight: 700;
}

/* 数据对比表 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}
.data-table th {
    background: var(--color-olive);
    color: var(--color-paper);
    padding: 12px 16px;
    font-size: 14px;
    text-align: left;
}
.data-table td {
    padding: 12px 16px;
    font-size: 15px;
    border-bottom: 1px solid rgba(61,74,42,0.1);
    background: var(--color-white);
}
.data-table tr:last-child td { border-bottom: none; }

/* 翻页 */
.battle-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 0;
    border-top: 2px solid rgba(61,74,42,0.15);
    margin-top: 48px;
    gap: 16px;
}
.battle-nav a {
    color: var(--color-olive);
    text-decoration: none;
    font-size: 15px;
    padding: 14px 28px;
    border: 1px solid var(--color-olive);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}
.battle-nav a:hover {
    background: var(--color-olive);
    color: var(--color-paper);
}
.battle-nav .nav-label {
    font-size: 12px;
    color: var(--color-text-light);
    display: block;
    margin-bottom: 2px;
}
.battle-nav a:hover .nav-label { color: var(--color-paper-light); }
.battle-nav .nav-arrow { font-size: 20px; }
/* 跨时期跳转按钮 */
.battle-nav a.next-period {
    background: var(--color-red);
    color: var(--color-paper);
    border-color: var(--color-red);
    font-weight: 600;
    padding: 14px 32px;
}
.battle-nav a.next-period:hover {
    background: var(--color-red-dark);
    border-color: var(--color-red-dark);
}
.battle-nav a.next-period .nav-label { color: var(--color-paper-light); }
.battle-nav .next-period-hint {
    text-align: center;
    width: 100%;
    font-size: 13px;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

/* ===== 动画 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--color-olive);
    color: var(--color-paper-light);
    text-align: center;
    padding: 32px 24px;
    font-size: 14px;
    line-height: 1.8;
    border-top: 2px solid var(--color-red);
}
.footer a { color: var(--color-paper); }

/* ===== 手机适配 ===== */
@media (max-width: 768px) {
    .navbar {
        padding: 0 16px;
    }
    .navbar-menu { display: none; }
    .navbar-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        cursor: pointer;
        background: none; border: none;
    }
    .navbar-toggle span {
        width: 24px; height: 2px;
        background: var(--color-paper);
        transition: 0.3s;
    }
    .navbar-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px; left: 0; right: 0;
        background: rgba(61,74,42,0.97);
        padding: 16px;
        gap: 12px;
    }

    .hero-title { font-size: 36px; }
    .hero-subtitle { font-size: 16px; }
    .hero-quote { font-size: 14px; }

    .period-grid { grid-template-columns: 1fr; }
    .period-card-img { height: 160px; }

    .heroes-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .timeline-nav {
        padding: 10px 12px;
        gap: 8px;
        top: 56px;
    }
    .timeline-nav a { font-size: 12px; padding: 4px 12px; }

    .battle-detail { padding: 20px 16px 60px; }
    .battle-title { font-size: 26px; }
    .battle-section h3 { font-size: 18px; }
    .battle-section p { font-size: 15px; line-height: 1.9; }
    .battle-img-row { grid-template-columns: 1fr; }
    .battle-nav { flex-direction: column; gap: 12px; }
    .battle-nav a { text-align: center; }

    .timeline-points { flex-direction: row; flex-wrap: nowrap; overflow-x: auto; }
    .timeline-line { display: none; }

    .section-title { font-size: 24px; }
}

@media (max-width: 480px) {
    .heroes-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 28px; }
}