@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital@1&family=Ma+Shan+Zheng&family=Noto+Serif+SC:wght@400;500&display=swap');

:root {
    --bg: #F5F1E8;
    --ink: #212121;
    --ink-faded: rgba(33, 33, 33, 0.55);
    --cinnabar: #C03A2B;
}

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

body {
    font-family: 'Noto Serif SC', serif;
    background-color: var(--bg);
    color: var(--ink);
    line-height: 2;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* 字体排印 Typography */
.title-font {
    font-family: 'Ma Shan Zheng', cursive;
    font-weight: normal;
}
.latin {
    font-family: 'EB Garamond', serif;
    font-style: italic;
    font-weight: normal;
}
.vertical-text {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.5em;
}

/* 布局与线条 Layout & Hairlines */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5vw;
}

.hairline-left {
    border-left: 1px solid var(--ink-faded);
    padding-left: 40px;
    margin-left: 20px;
}
.hairline-top {
    border-top: 1px solid var(--ink-faded);
    padding-top: 40px;
    margin-top: 80px;
}

/* 动效 Motion */
@keyframes inkBleed {
    0% { opacity: 0; filter: blur(8px); transform: scale(0.98); }
    100% { opacity: 1; filter: blur(0); transform: scale(1); }
}
.ink-reveal {
    animation: inkBleed 900ms ease-out forwards;
}

/* 链接与交互 Links & Hover */
a {
    color: var(--ink);
    text-decoration: none;
    transition: color 250ms ease;
}
.hover-underline {
    display: inline-block;
    position: relative;
}
.hover-underline::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 1.5px;
    background: var(--cinnabar);
    transition: width 250ms ease;
}
.hover-underline:hover::after, .active-nav::after {
    width: 100%;
}
.hover-underline:hover, .active-nav {
    color: var(--cinnabar);
}

/* 导航栏 Header */
header {
    padding: 40px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}
.logo-text {
    font-size: 1.5rem;
    letter-spacing: 2px;
}
.nav-links {
    display: flex;
    gap: 35px;
    font-weight: 500;
}
.nav-links a {
    font-size: 1.05rem;
    letter-spacing: 1px;
}

/* 主视觉区 Hero */
.hero {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin: 80px 0 120px 0;
}
.hero-content {
    max-width: 600px;
}
.hero-title {
    font-size: 4.5rem;
    line-height: 1.2;
    margin-bottom: 30px;
    color: var(--ink);
}
.hero-desc {
    font-size: 1.15rem;
    color: var(--ink-faded);
    margin-bottom: 50px;
    max-width: 480px;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--ink);
    padding: 12px 30px;
    font-size: 1.1rem;
    transition: all 250ms ease;
}
.btn-primary:hover {
    border-color: var(--cinnabar);
    color: var(--cinnabar);
}
.hero-margin-text {
    font-size: 1.5rem;
    color: var(--ink-faded);
    height: 400px;
    border-left: 1px solid var(--ink-faded);
    padding-top: 20px;
}

/* 区块 Sections */
.section {
    padding: 100px 0;
}
.section-title {
    font-size: 2.5rem;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    gap: 15px;
}
.section-title::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    background-color: var(--cinnabar);
}

/* 网格布局 Grids */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 60px; }

/* 留白卡片 (摒弃背景与阴影，采用细线) */
.item-panel {
    padding-left: 20px;
    border-left: 1px solid var(--ink-faded);
    transition: border-color 250ms ease;
}
.item-panel:hover {
    border-left-color: var(--cinnabar);
}
.item-panel h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    font-weight: 500;
}
.item-panel p {
    color: var(--ink-faded);
    font-size: 1rem;
}

/* 价格表 Pricing */
.price-col {
    padding: 40px 30px;
    border: 1px solid var(--ink-faded);
    position: relative;
}
.price-col:hover {
    border-color: var(--cinnabar);
}
.price-seal {
    position: absolute;
    top: -15px;
    right: 20px;
    background: var(--cinnabar);
    color: var(--bg);
    padding: 5px 10px;
    font-size: 0.85rem;
    letter-spacing: 2px;
}
.price-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
}
.price-amount {
    font-size: 2.5rem;
    font-family: 'EB Garamond', serif;
    margin-bottom: 30px;
    color: var(--ink);
}
.price-amount span {
    font-size: 1rem;
    font-family: 'Noto Serif SC', serif;
    color: var(--ink-faded);
}
.price-features {
    list-style: none;
    margin-bottom: 40px;
}
.price-features li {
    padding: 8px 0;
    color: var(--ink-faded);
    border-bottom: 1px solid rgba(33, 33, 33, 0.1);
}
.price-features li:last-child {
    border-bottom: none;
}
.price-btn {
    display: block;
    text-align: center;
    border: 1px solid var(--ink-faded);
    padding: 10px 0;
    transition: all 250ms ease;
}
.price-btn:hover {
    background: var(--cinnabar);
    border-color: var(--cinnabar);
    color: var(--bg);
}

/* 延伸阅读 */
.reading-section {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}
.reading-section p { color: var(--ink-faded); margin-top: 20px;}

/* 常见问题 FAQ */
.faq-item {
    margin-bottom: 40px;
}
.faq-item h4 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}
.faq-item p {
    color: var(--ink-faded);
}

/* 页脚 Footer */
footer {
    border-top: 1px solid var(--ink-faded);
    padding: 60px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--ink-faded);
}
.footer-links {
    display: flex;
    gap: 30px;
}
.footer-links a {
    color: var(--ink-faded);
}
.footer-links a:hover {
    color: var(--cinnabar);
}

/* 响应式 Responsive */
@media (max-width: 900px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 40px; }
    .hero { flex-direction: column; }
    .hero-margin-text {
        height: auto;
        writing-mode: horizontal-tb;
        border-left: none;
        border-top: 1px solid var(--ink-faded);
        padding-top: 20px;
        margin-top: 40px;
        letter-spacing: 0.2em;
    }
    header { flex-direction: column; gap: 20px; }
    .nav-links { flex-wrap: wrap; justify-content: center; gap: 15px; }
    footer { flex-direction: column; gap: 30px; text-align: center; }
}


/* 博客与文章区块 Blog & Articles */
.article-container { max-width: 800px; margin: 60px auto; padding: 0 5vw; }
.article-header { margin-bottom: 40px; border-bottom: 1px solid var(--ink-faded); padding-bottom: 20px; }
.article-title { font-size: 2.5rem; margin-bottom: 15px; color: var(--ink); line-height: 1.3; }
.article-meta { font-size: 0.95rem; color: var(--ink-faded); font-family: 'EB Garamond', serif; }
.breadcrumb { margin-bottom: 30px; font-size: 0.9rem; color: var(--ink-faded); }
.breadcrumb a { color: var(--ink); text-decoration: none; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--cinnabar); }
.article-content h2 { font-size: 1.8rem; margin: 50px 0 20px 0; border-left: 4px solid var(--cinnabar); padding-left: 15px; }
.article-content h3 { font-size: 1.4rem; margin: 30px 0 15px 0; }
.article-content p { margin-bottom: 20px; color: var(--ink); line-height: 2; font-size: 1.05rem; }
.article-content ul, .article-content ol { margin: 0 0 20px 20px; padding-left: 20px; font-size: 1.05rem; }
.article-content li { margin-bottom: 10px; color: var(--ink); }
.article-content a { color: var(--cinnabar); text-decoration: none; border-bottom: 1px solid var(--cinnabar); transition: opacity 0.2s; }
.article-content a:hover { opacity: 0.7; }
.related-articles { margin-top: 60px; padding-top: 40px; border-top: 1px solid var(--ink-faded); }
.related-articles ul { list-style: none; padding: 0; }
.related-articles li { margin-bottom: 15px; }
.related-articles a { color: var(--ink); text-decoration: none; font-size: 1.1rem; }
.related-articles a:hover { color: var(--cinnabar); text-decoration: underline; }

/* 资讯卡片 News Cards */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-bottom: 50px; }
.news-card { border-top: 1px solid var(--ink-faded); padding-top: 25px; transition: border-color 0.3s; display: flex; flex-direction: column; }
.news-card:hover { border-top-color: var(--cinnabar); }
.news-card-meta { display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--ink-faded); margin-bottom: 15px; font-family: 'EB Garamond', serif; }
.news-card-cat { color: var(--cinnabar); font-family: 'Noto Serif SC', serif; }
.news-card h3 { font-size: 1.25rem; margin-bottom: 15px; line-height: 1.4; }
.news-card h3 a { color: var(--ink); text-decoration: none; }
.news-card h3 a:hover { color: var(--cinnabar); }
.news-card p { color: var(--ink-faded); font-size: 0.95rem; margin-bottom: 25px; flex-grow: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-cta { font-size: 0.9rem; color: var(--ink); font-weight: 500; display: inline-flex; align-items: center; gap: 5px; }
.news-card-cta:hover { color: var(--cinnabar); }
@media (max-width: 900px) { .news-grid { grid-template-columns: 1fr; } }


/* 悬浮工具栏 Floating Tools */
.floating-tools {
    position: fixed;
    bottom: 40px;
    right: 40px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1000;
}
.float-btn {
    width: 45px;
    height: 45px;
    border: 1px solid var(--ink-faded);
    background: var(--bg);
    color: var(--ink);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border-radius: 50%;
    transition: all 0.3s ease;
    font-family: 'EB Garamond', serif;
    font-size: 1.2rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.float-btn:hover {
    border-color: var(--cinnabar);
    color: var(--cinnabar);
    transform: translateY(-3px);
}

/* 下一篇文章 Next Article */
.next-article-nav {
    margin-top: 60px;
    padding: 30px;
    background: rgba(33,33,33,0.02);
    border-left: 3px solid var(--cinnabar);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}
.next-article-nav:hover {
    background: rgba(33,33,33,0.04);
}
.next-article-nav span { color: var(--ink-faded); font-size: 0.9rem; display: block; margin-bottom: 8px;}
.next-article-nav a { font-size: 1.2rem; color: var(--ink); text-decoration: none; font-weight: 500;}
.next-article-nav a:hover { color: var(--cinnabar); }
.next-article-arrow { font-size: 2rem; color: var(--ink-faded); text-decoration: none; }
.next-article-nav:hover .next-article-arrow { color: var(--cinnabar); transform: translateX(5px); transition: all 0.3s;}

@media (max-width: 900px) {
    .floating-tools { bottom: 20px; right: 20px; }
    .hero-image { display: none; }
    .next-article-nav { flex-direction: column; align-items: flex-start; gap: 15px; }
}