/*
Theme Name: 山阅集团主题 / Shanyue Group Theme
Theme URI: https://shanyuegroup.com
Author: 关山阅
Author URI: https://shanyuegroup.com
Description: 山阅集团官方网站主题，传统文化 + 现代设计，中国风元素
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: shanyuegroup
Tags: one-column, custom-colors, custom-menu, custom-logo, editor-style, featured-images, footer-widgets, block-patterns, block-styles, wide-blocks
*/

/* ================================================
   山阅集团 · 设计系统
   ================================================ */

/* CSS Variables — 设计令牌 */
:root {
    /* 色彩系统 — 青瓷水墨风 */
    --color-primary: #1e3a3a;        /* 青墨色 */
    --color-accent: #4a7c6f;         /* 青瓷绿 */
    --color-accent-gold: #d4a853;   /* 古铜金 */
    --color-accent-light: #5a8f80;   /* 浅青瓷 */
    --color-bg: #f0ebe0;             /* 绢本色 */
    --color-bg-alt: #e5ddd0;         /* 深绢色 */
    --color-text: #3a3a3a;          /* 深灰正文 */
    --color-text-light: #7a7268;     /* 浅灰 */
    --color-border: #d0c8ba;         /* 边框 */
    --color-white: #ffffff;

    /* 字体 */
    --font-heading: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
    --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-english: 'Playfair Display', 'Georgia', serif;

    /* 间距 */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* 圆角 */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 8px;

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(44, 44, 44, 0.06);
    --shadow-md: 0 4px 20px rgba(44, 44, 44, 0.10);
    --shadow-lg: 0 8px 40px rgba(44, 44, 44, 0.14);

    /* 过渡 */
    --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p { margin-bottom: 1.5rem; }

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-accent-light);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container--narrow {
    max-width: 800px;
}

/* ================================================
   Header & Navigation
   ================================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(245, 240, 232, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    max-width: 1200px;
    margin: 0 auto;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.site-logo__icon {
    width: 40px;
    height: 40px;
}

.site-logo__text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.site-logo__sub {
    font-size: 0.7rem;
    color: var(--color-text-light);
    letter-spacing: 0.1em;
    display: block;
    font-family: var(--font-english);
}

/* Navigation */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-md);
}

.main-nav a {
    font-size: 0.95rem;
    color: var(--color-text);
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

.main-nav a:hover {
    color: var(--color-accent);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    margin: 6px 0;
    transition: var(--transition);
}

/* ================================================
   Hero Section
   ================================================ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--color-primary);
}

/* 墨晕装饰 */
.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 70%;
    height: 160%;
    background: radial-gradient(ellipse, rgba(139, 115, 85, 0.12) 0%, transparent 65%);
    pointer-events: none;
}

/* 宣纸渐变 */
.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, var(--color-bg), transparent);
    pointer-events: none;
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 8rem var(--space-md) 4rem;
}

.hero__eyebrow {
    font-family: var(--font-english);
    font-size: 0.9rem;
    color: var(--color-accent-gold);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.hero__title {
    color: var(--color-white);
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.hero__title em {
    color: var(--color-accent-gold);
    font-style: normal;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.72);
    max-width: 600px;
    margin-bottom: var(--space-lg);
    line-height: 2;
}

.hero__cta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ================================================
   Buttons
   ================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-family: var(--font-body);
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.btn--primary:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-light);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(139, 115, 85, 0.3);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.8);
    color: var(--color-white);
}

.btn--outline-dark {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--outline-dark:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ================================================
   Stats Section
   ================================================ */

.stats {
    padding: var(--space-xl) 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.stat-item {
    text-align: center;
    padding: var(--space-md);
}

.stat-item__number {
    font-family: var(--font-english);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.stat-item__number span {
    font-size: 2rem;
    color: var(--color-accent-gold);
}

.stat-item__label {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

/* ================================================
   Portfolio Grid (业务矩阵)
   ================================================ */

.portfolio {
    padding: var(--space-xl) 0;
    background: var(--color-bg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.section-header__eyebrow {
    font-family: var(--font-english);
    font-size: 0.85rem;
    color: var(--color-accent);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-xs);
}

.section-header__title {
    margin-bottom: var(--space-sm);
}

.section-header__desc {
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

.portfolio-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

/* 古铜色上边框 */
.portfolio-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.portfolio-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.portfolio-card:hover::before {
    transform: scaleX(1);
}

.portfolio-card__icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.portfolio-card__title {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
}

.portfolio-card__desc {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-sm);
}

.portfolio-card__link {
    font-size: 0.85rem;
    font-weight: 600;
}

.portfolio-card__link::after {
    content: ' →';
    transition: var(--transition);
}

.portfolio-card__link:hover::after {
    margin-left: 4px;
}

/* ================================================
   About Section
   ================================================ */

.about {
    padding: var(--space-xl) 0;
    background: var(--color-white);
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.about__image {
    position: relative;
}

.about__image img {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.about__image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-md);
    z-index: -1;
}

.about__content h2 {
    margin-bottom: var(--space-sm);
}

.about__content p {
    color: var(--color-text-light);
    margin-bottom: var(--space-md);
}

.about__signature {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-top: var(--space-md);
}

/* ================================================
   Database Section (文化数据库)
   ================================================ */

.database {
    padding: var(--space-xl) 0;
    background: var(--color-primary);
    color: var(--color-white);
}

.database .section-header__eyebrow {
    color: var(--color-accent-gold);
}

.database .section-header__title {
    color: var(--color-white);
}

.database .section-header__desc {
    color: rgba(255, 255, 255, 0.62);
}

.database__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.database-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    transition: var(--transition);
}

.database-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-accent-gold);
}

.database-card__name {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.database-card__amount {
    font-family: var(--font-english);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-gold);
    margin-bottom: var(--space-xs);
}

.database-card__type {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ================================================
   CTA Section
   ================================================ */

.cta {
    padding: var(--space-xl) 0;
    background: var(--color-bg-alt);
    text-align: center;
}

.cta__title {
    margin-bottom: var(--space-sm);
}

.cta__desc {
    color: var(--color-text-light);
    max-width: 500px;
    margin: 0 auto var(--space-md);
}

.cta__email {
    font-family: var(--font-english);
    font-size: 1.5rem;
    color: var(--color-accent);
    font-weight: 600;
}

/* ================================================
   Footer
   ================================================ */

.site-footer {
    background: var(--color-primary);
    color: rgba(255, 255, 255, 0.62);
    padding: var(--space-lg) 0 var(--space-md);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer__brand .site-logo__text {
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.footer__brand p {
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer__heading {
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.footer__links {
    list-style: none;
}

.footer__links li {
    margin-bottom: var(--space-xs);
}

.footer__links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer__links a:hover {
    color: var(--color-accent-gold);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.footer__social {
    display: flex;
    gap: var(--space-sm);
}

.footer__social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer__social a:hover {
    background: var(--color-accent);
}

/* ================================================
   Page Templates
   ================================================ */

.page-header {
    padding: 10rem var(--space-md) 4rem;
    background: var(--color-primary);
    text-align: center;
}

.page-header__title {
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.page-header__desc {
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: var(--space-xl) 0;
}

/* About Page */
.about-full {
    padding: var(--space-xl) 0;
}

.about-full__section {
    margin-bottom: var(--space-xl);
}

.about-full__section h2 {
    margin-bottom: var(--space-md);
    position: relative;
    padding-bottom: var(--space-sm);
}

.about-full__section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--color-accent);
}

.timeline {
    position: relative;
    padding-left: var(--space-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-md);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-lg) - 4px);
    top: 8px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-accent);
}

.timeline-item__year {
    font-family: var(--font-english);
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
}

.timeline-item__text {
    font-size: 1rem;
    color: var(--color-text);
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.contact-info {
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
}

.contact-info h3 {
    margin-bottom: var(--space-md);
}

.contact-info__item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.contact-info__icon {
    width: 40px;
    height: 40px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1rem;
    flex-shrink: 0;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(139, 115, 85, 0.1);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.contact-form button {
    align-self: flex-start;
}

/* ================================================
   Decorative Elements — 古籍风格装饰
   ================================================ */

/* 竹简分割线 */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
    margin: var(--space-lg) 0;
}

/* 古铜竖线装饰 */
.decor-line {
    width: 3px;
    height: 40px;
    background: var(--color-accent);
    display: inline-block;
    vertical-align: middle;
    margin-right: var(--space-sm);
}

/* 印章效果 */
.seal {
    width: 60px;
    height: 60px;
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--color-accent);
    transform: rotate(-5deg);
    opacity: 0.8;
}

/* ================================================
   Responsive
   ================================================ */

@media (max-width: 992px) {
    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__grid {
        grid-template-columns: 1fr 1fr;
    }

    .about__grid {
        grid-template-columns: 1fr;
    }

    .about__image {
        order: -1;
    }

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

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }

    .main-nav.active {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-white);
        padding: var(--space-md);
        box-shadow: var(--shadow-md);
    }

    .main-nav.active ul {
        flex-direction: column;
    }

    .menu-toggle {
        display: block;
    }

    .hero__cta {
        flex-direction: column;
    }

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

    .portfolio__grid {
        grid-template-columns: 1fr;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }

    .database__grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }
}

/* ================================================
   Animations
   ================================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}