/* 
   Cinnabar Aesthetic UI Kit
   Theme: Contemporary Chinese Literati (Ink, Rice Paper, Vermilion)
*/

:root {
    --rice-paper: #F7F3EA;
    --panel: #FFFDF6;
    --ink-black: #1C1A17;
    --muted: #8B8375;
    --hairline: #E2DACC;
    --cinnabar-red: #C3272B;
    --dark-teal: #2E4B4F;
    
    --font-heading: 'ZCOOL XiaoWei', serif;
    --font-body: 'Noto Serif SC', serif;
}

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

body {
    font-family: var(--font-body);
    line-height: 1.8;
    color: var(--ink-black);
    background-color: var(--rice-paper);
    /* Subtle noise texture simulating rice paper */
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.04'/%3E%3C/svg%3E");
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

h1, h2, h3, h4, .logo-text, .brand-font {
    font-family: var(--font-heading);
    letter-spacing: 0.1em;
    font-weight: normal;
    color: var(--ink-black);
}

a {
    text-decoration: none;
    color: var(--ink-black);
    transition: color 0.3s;
}

a:hover {
    color: var(--cinnabar-red);
}

/* 笔刷分割线 */
.brush-divider {
    height: 4px;
    background-color: var(--cinnabar-red);
    width: 60px;
    margin: 20px 0;
    border-radius: 2px;
}

.brush-divider-center {
    height: 4px;
    background-color: var(--cinnabar-red);
    width: 60px;
    margin: 0 auto 40px auto;
    border-radius: 2px;
}

/* 按钮 - 印章风格 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border: 2px solid var(--ink-black);
    background: transparent;
    color: var(--ink-black);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    letter-spacing: 0.15em;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 0; /* 方正如印章 */
}

.btn-primary {
    background-color: var(--cinnabar-red);
    color: var(--panel);
    border-color: var(--cinnabar-red);
}

.btn-primary:hover {
    background-color: #A01D22;
    border-color: #A01D22;
}

.btn-outline:hover {
    background-color: var(--ink-black);
    color: var(--panel);
}

.btn-large {
    padding: 14px 40px;
    font-size: 1.2rem;
}

.btn-block {
    display: block;
    width: 100%;
    margin-top: 25px;
}

/* 导航栏 */
.navbar {
    background-color: var(--panel);
    border-bottom: 1px solid var(--hairline);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
}

/* 印章 Logo */
.logo-seal {
    background-color: var(--cinnabar-red);
    color: var(--panel);
    font-family: var(--font-heading);
    font-size: 1.2rem;
    width: 34px;
    height: 34px;
    line-height: 34px;
    text-align: center;
    border-radius: 2px;
    margin-right: 8px;
}

.logo-cloud {
    font-size: 1.2rem;
    color: var(--muted);
    margin-right: 12px;
    opacity: 0.8;
}

.logo-text {
    font-size: 1.6rem;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}

/* Hero 区块 */
.hero {
    padding: 120px 0 100px;
    position: relative;
    overflow: hidden;
    background-image: url('hero_bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(247, 243, 234, 0.75); /* var(--rice-paper) with transparency to make text readable */
    z-index: 1;
}

.hero-content {
    display: flex;
    position: relative;
    z-index: 2;
}

.vertical-caption {
    writing-mode: vertical-rl;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    letter-spacing: 0.3em;
    color: var(--muted);
    padding-right: 40px;
    border-right: 1px solid var(--hairline);
    margin-right: 40px;
}

.hero-text h1 {
    font-size: 3.5rem;
    color: var(--ink-black);
    line-height: 1.2;
}

.hero .subtitle {
    font-size: 1.2rem;
    color: var(--muted);
    max-width: 650px;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

/* 通用区块 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
}

.section-desc {
    text-align: center;
    color: var(--muted);
    margin: 0 auto 40px;
    max-width: 600px;
}

/* 网格 */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* 卡片风格 */
.card {
    background-color: var(--panel);
    border: 2px solid var(--ink-black);
    padding: 40px 30px;
    position: relative;
    box-shadow: 6px 6px 0 var(--hairline);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translate(-2px, -2px);
    box-shadow: 8px 8px 0 var(--hairline);
}

.card-icon {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--cinnabar-red);
    margin-bottom: 15px;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    border-bottom: 1px dashed var(--hairline);
    padding-bottom: 10px;
}

.card p {
    color: var(--muted);
}

/* 流媒体卡片 */
.app-card {
    background: transparent;
    border: 1px solid var(--ink-black);
    padding: 20px;
    text-align: center;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    letter-spacing: 0.1em;
}

/* 价格卡片 */
.price-card.popular {
    border-color: var(--cinnabar-red);
    box-shadow: 6px 6px 0 var(--cinnabar-red);
}

.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--cinnabar-red);
    color: var(--panel);
    padding: 4px 15px;
    font-family: var(--font-heading);
    letter-spacing: 0.1em;
    border: 1px solid var(--ink-black);
}

.price-card .price {
    font-size: 2.5rem;
    font-family: var(--font-heading);
    text-align: center;
    color: var(--ink-black);
    margin: 20px 0;
}

.price-card .price span {
    font-size: 1rem;
    color: var(--muted);
    font-family: var(--font-body);
}

.price-card ul {
    list-style: none;
    margin-bottom: 30px;
}

.price-card ul li {
    padding: 12px 0;
    border-bottom: 1px solid var(--hairline);
    color: var(--ink-black);
}

.price-card ul li::before {
    content: "·";
    color: var(--cinnabar-red);
    margin-right: 10px;
    font-weight: bold;
    font-size: 1.5rem;
    vertical-align: middle;
}

/* 评价与FAQ */
.review-card .comment {
    font-size: 1.1rem;
    color: var(--ink-black);
    margin-bottom: 20px;
}

.review-card .user {
    color: var(--muted);
    text-align: right;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 30px;
    padding: 30px;
}

/* 外部资源区 */
.external-resources {
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    background-color: var(--panel);
    padding: 60px 0;
}

.text-center { text-align: center; }
.external-link {
    display: inline-block;
    margin-top: 20px;
    color: var(--dark-teal);
    font-family: var(--font-heading);
    font-size: 1.2rem;
    border-bottom: 1px solid var(--dark-teal);
    padding-bottom: 2px;
}

.external-link:hover {
    color: var(--cinnabar-red);
    border-color: var(--cinnabar-red);
}

/* Footer */
.footer {
    padding: 60px 0;
    text-align: center;
    border-top: 2px solid var(--ink-black);
    background-color: var(--rice-paper);
}

.footer-links {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    gap: 30px;
}

.footer-links a {
    font-family: var(--font-heading);
    color: var(--muted);
}

.footer-links a:hover {
    color: var(--cinnabar-red);
}

/* 通用页面样式 (About/Terms等) */
.page-content {
    background: var(--panel);
    border: 2px solid var(--ink-black);
    padding: 60px;
    max-width: 800px;
    margin: 60px auto;
    box-shadow: 6px 6px 0 var(--hairline);
}

.page-content h1 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 4px solid var(--cinnabar-red);
    display: inline-block;
    padding-bottom: 10px;
}

.page-content h2 {
    font-size: 1.6rem;
    margin: 40px 0 20px;
    color: var(--ink-black);
}

.page-content p, .page-content ul {
    margin-bottom: 20px;
    color: var(--muted);
}

/* 响应式 */
@media (max-width: 900px) {
    .nav-container { flex-direction: column; gap: 15px; }
    .nav-menu { flex-wrap: wrap; justify-content: center; gap: 15px; }
    .hero-content { flex-direction: column; }
    .vertical-caption { 
        writing-mode: horizontal-tb; 
        border-right: none; 
        border-bottom: 1px solid var(--hairline); 
        padding: 0 0 10px 0; 
        margin: 0 0 20px 0; 
        letter-spacing: 0.1em;
    }
    .hero-text h1 { font-size: 2.5rem; }
    .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .hero-actions { flex-direction: column; }
    
    .btn {
        min-height: 52px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* 浮动按钮 */
.floating-btn {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    background-color: var(--panel);
    border: 2px solid var(--ink-black);
    color: var(--ink-black);
    font-family: var(--font-heading);
    font-size: 1.2rem;
    text-align: center;
    line-height: 46px;
    cursor: pointer;
    box-shadow: 4px 4px 0 var(--hairline);
    transition: all 0.3s ease;
    z-index: 1000;
}
.floating-btn:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--cinnabar-red);
    color: var(--cinnabar-red);
}
@media (max-width: 768px) {
    .floating-btn { bottom: 20px; right: 20px; width: 45px; height: 45px; line-height: 41px; }
}