/* ============================================
   奇门指路 - 全局样式
   配色：深墨 + 金 + 朱砂 + 米白
   字体：思源宋体（标题）+ 思源黑体（正文）
   ============================================ */

:root {
    --color-ink: #1a1a2e;
    --color-ink-light: #2d2d44;
    --color-gold: #c9a961;
    --color-gold-light: #e0c98a;
    --color-cinnabar: #8b2635;
    --color-cream: #f5f2e8;
    --color-cream-dark: #e8e3d3;
    --color-text: #2c2c2c;
    --color-text-muted: #6b6b6b;
    --color-border: #d4cfc0;
    --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
    --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --max-width: 1200px;
    --radius: 4px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-cream);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-cinnabar);
    text-decoration: none;
    transition: color 0.2s;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   Header 导航
   ============================================ */
.site-header {
    background: var(--color-ink);
    color: var(--color-cream);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.site-logo {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-gold);
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-logo .logo-mark {
    width: 36px;
    height: 36px;
    border: 1.5px solid var(--color-gold);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--color-gold);
}

.site-nav {
    display: flex;
    gap: 32px;
    list-style: none;
}

.site-nav a {
    color: var(--color-cream);
    font-size: 15px;
    font-weight: 400;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-cream);
    font-size: 24px;
    cursor: pointer;
}

/* ============================================
   Hero 首屏
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-ink-light) 100%);
    color: var(--color-cream);
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(201, 169, 97, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 700;
    line-height: 1.3;
    margin-top: 16px;
    margin-bottom: 20px;
    color: var(--color-gold);
}

.hero-text .subtitle {
    font-size: 18px;
    color: var(--color-cream-dark);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.hero-text .tagline {
    font-family: var(--font-serif);
    font-size: 17px;
    color: var(--color-gold-light);
    margin-bottom: 32px;
    padding-left: 16px;
    border-left: 3px solid var(--color-gold);
    line-height: 1.7;
}

.hero-text .credentials {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 36px;
}

.hero-text .credential {
    background: rgba(201, 169, 97, 0.1);
    border: 1px solid rgba(201, 169, 97, 0.3);
    color: var(--color-gold-light);
    padding: 6px 14px;
    border-radius: var(--radius);
    font-size: 13px;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.25s;
    cursor: pointer;
    border: none;
    font-family: var(--font-sans);
}

.btn-primary {
    background: var(--color-gold);
    color: var(--color-ink);
}

.btn-primary:hover {
    background: var(--color-gold-light);
    color: var(--color-ink);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 169, 97, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-cream);
    border: 1.5px solid var(--color-cream-dark);
}

.btn-outline:hover {
    border-color: var(--color-gold);
    color: var(--color-gold);
}

.hero-image {
    text-align: center;
}

.hero-image img {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border: 2px solid rgba(201, 169, 97, 0.3);
}

/* ============================================
   Section 通用
   ============================================ */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 56px;
}

.section-title h2 {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    background: var(--color-gold);
}

.section-title p {
    color: var(--color-text-muted);
    font-size: 16px;
    margin-top: 20px;
}

/* ============================================
   核心服务
   ============================================ */
.services {
    background: #fff;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--color-cream);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 36px 32px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-gold);
    transform: scaleY(0);
    transition: transform 0.3s;
    transform-origin: top;
}

.service-card:hover {
    box-shadow: 0 12px 40px rgba(26, 26, 46, 0.08);
    transform: translateY(-4px);
}

.service-card:hover::before {
    transform: scaleY(1);
}

.service-card .icon {
    font-family: var(--font-serif);
    font-size: 36px;
    color: var(--color-gold);
    margin-bottom: 16px;
    font-weight: 700;
}

.service-card h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--color-text-muted);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 16px;
}

.service-card .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-card .tag {
    background: rgba(139, 38, 53, 0.08);
    color: var(--color-cinnabar);
    padding: 4px 10px;
    border-radius: 3px;
    font-size: 12px;
}

/* ============================================
   信任背书 - 合作机构
   ============================================ */
.trust {
    background: var(--color-ink);
    color: var(--color-cream);
}

.trust .section-title h2 {
    color: var(--color-cream);
}

.trust .section-title h2::after {
    background: var(--color-gold);
}

.trust .section-title p {
    color: var(--color-cream-dark);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.client-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(201, 169, 97, 0.2);
    border-radius: var(--radius);
    padding: 24px 20px;
    text-align: center;
    transition: all 0.3s;
}

.client-item:hover {
    background: rgba(201, 169, 97, 0.08);
    border-color: var(--color-gold);
}

.client-item .client-name {
    font-family: var(--font-serif);
    font-size: 16px;
    color: var(--color-gold-light);
    font-weight: 500;
}

/* ============================================
   关于张老师 - 简介
   ============================================ */
.about-preview {
    background: var(--color-cream);
}

.about-preview .container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 56px;
    align-items: center;
}

.about-preview-image img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.about-preview-text h2 {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 700;
    color: var(--color-ink);
    margin-bottom: 8px;
}

.about-preview-text .title-en {
    color: var(--color-gold);
    font-size: 14px;
    letter-spacing: 2px;
    margin-bottom: 24px;
    text-transform: uppercase;
}

.about-preview-text p {
    color: var(--color-text);
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-preview-text .highlights {
    margin-top: 28px;
    padding-left: 0;
    list-style: none;
}

.about-preview-text .highlights li {
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
    color: var(--color-text);
    font-size: 15px;
    border-bottom: 1px dashed var(--color-border);
}

.about-preview-text .highlights li::before {
    content: "◆";
    position: absolute;
    left: 0;
    color: var(--color-gold);
    font-size: 12px;
    top: 14px;
}

/* ============================================
   案例预览
   ============================================ */
.cases-preview {
    background: #fff;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.case-card {
    background: var(--color-cream);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all 0.3s;
}

.case-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.case-card .case-header {
    background: var(--color-ink);
    color: var(--color-gold);
    padding: 16px 24px;
    font-family: var(--font-serif);
    font-size: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.case-card .case-body {
    padding: 24px;
}

.case-card .case-category {
    color: var(--color-cinnabar);
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.case-card h3 {
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--color-ink);
    margin-bottom: 12px;
    line-height: 1.5;
}

.case-card p {
    color: var(--color-text-muted);
    font-size: 14px;
    line-height: 1.7;
}

.case-card .case-result {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--color-border);
    font-size: 13px;
    color: var(--color-gold);
    font-weight: 500;
}

/* ============================================
   CTA 行动号召
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-ink-light) 100%);
    color: var(--color-cream);
    text-align: center;
    padding: 72px 0;
}

.cta-section h2 {
    font-family: var(--font-serif);
    font-size: 30px;
    font-weight: 700;
    color: var(--color-gold);
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--color-cream-dark);
    font-size: 16px;
    margin-bottom: 32px;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--color-ink);
    color: var(--color-cream-dark);
    padding: 56px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-family: var(--font-serif);
    color: var(--color-gold);
    font-size: 16px;
    margin-bottom: 16px;
    font-weight: 500;
}

.footer-col p,
.footer-col li {
    font-size: 14px;
    line-height: 1.9;
    color: var(--color-cream-dark);
    list-style: none;
}

.footer-col a {
    color: var(--color-cream-dark);
}

.footer-col a:hover {
    color: var(--color-gold);
}

.footer-bottom {
    border-top: 1px solid rgba(201, 169, 97, 0.2);
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
    color: rgba(245, 242, 232, 0.5);
}

.footer-bottom .beian {
    margin-top: 8px;
}

.footer-bottom .beian a {
    color: rgba(245, 242, 232, 0.5);
}

/* ============================================
   页面通用 - 子页面头部
   ============================================ */
.page-header {
    background: var(--color-ink);
    color: var(--color-cream);
    padding: 64px 0 48px;
    text-align: center;
}

.page-header h1 {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 700;
    color: var(--color-gold);
    margin-bottom: 12px;
}

.page-header .breadcrumb {
    color: var(--color-cream-dark);
    font-size: 14px;
}

.page-header .breadcrumb a {
    color: var(--color-cream-dark);
}

.page-header .breadcrumb a:hover {
    color: var(--color-gold);
}

/* ============================================
   关于页 - 详细内容
   ============================================ */
.about-content {
    background: #fff;
}

.about-detail {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 56px;
    align-items: start;
}

.about-detail-image {
    position: sticky;
    top: 96px;
}

.about-detail-image img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    margin-bottom: 24px;
}

.about-detail-image .contact-quick {
    background: var(--color-cream);
    padding: 20px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.about-detail-image .contact-quick h4 {
    font-family: var(--font-serif);
    color: var(--color-ink);
    font-size: 16px;
    margin-bottom: 12px;
}

.about-detail-image .contact-quick p {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.about-detail-text h2 {
    font-family: var(--font-serif);
    font-size: 26px;
    color: var(--color-ink);
    margin: 32px 0 16px;
    padding-left: 16px;
    border-left: 4px solid var(--color-gold);
}

.about-detail-text h2:first-child {
    margin-top: 0;
}

.about-detail-text p {
    color: var(--color-text);
    font-size: 16px;
    line-height: 2;
    margin-bottom: 16px;
}

.about-detail-text .credentials-list {
    list-style: none;
    margin: 16px 0;
}

.about-detail-text .credentials-list li {
    padding: 10px 0 10px 28px;
    position: relative;
    color: var(--color-text);
    font-size: 15px;
    border-bottom: 1px dashed var(--color-border);
}

.about-detail-text .credentials-list li::before {
    content: "◆";
    position: absolute;
    left: 0;
    color: var(--color-gold);
    font-size: 12px;
    top: 14px;
}

/* ============================================
   联系页
   ============================================ */
.contact-content {
    background: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.contact-info h2 {
    font-family: var(--font-serif);
    font-size: 26px;
    color: var(--color-ink);
    margin-bottom: 24px;
    padding-left: 16px;
    border-left: 4px solid var(--color-gold);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px dashed var(--color-border);
}

.contact-item .icon {
    width: 48px;
    height: 48px;
    background: var(--color-cream);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    color: var(--color-gold);
    font-size: 20px;
    flex-shrink: 0;
}

.contact-item .info h4 {
    font-family: var(--font-serif);
    font-size: 16px;
    color: var(--color-ink);
    margin-bottom: 4px;
}

.contact-item .info p {
    color: var(--color-text-muted);
    font-size: 15px;
}

.contact-qr {
    background: var(--color-cream);
    padding: 32px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--color-border);
}

.contact-qr h3 {
    font-family: var(--font-serif);
    color: var(--color-ink);
    font-size: 20px;
    margin-bottom: 20px;
}

.contact-qr .qr-placeholder {
    width: 200px;
    height: 200px;
    background: #fff;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 13px;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 900px) {
    .hero .container,
    .about-preview .container,
    .about-detail,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-detail-image {
        position: static;
    }

    .services-grid,
    .cases-grid,
    .clients-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .hero-text h1 {
        font-size: 32px;
    }

    .section-title h2 {
        font-size: 26px;
    }

    .site-nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-ink);
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
    }

    .site-nav.open {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    section {
        padding: 56px 0;
    }
}