/* =============================================
   Seedance2Prompt.org — 全局样式
   所有颜色引用 variables.css 中的 CSS 变量
   ============================================= */

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 17px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* ===== 主题切换全局过渡动画 ===== */
html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
    transition:
        background-color 0.5s cubic-bezier(0.4, 0, 0.2, 1),
        color 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        border-color 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-primary); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--accent-blue); }
::selection { background: var(--selection-bg); color: #fff; }

/* ===== Utility Classes ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.gradient-text {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-label {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent-primary);
    margin-bottom: 16px;
    display: inline-block;
}
.section-title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
}
.section-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 720px;
    line-height: 1.8;
}
.badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-mono);
    letter-spacing: 1px;
    text-transform: uppercase;
}
.badge-cyan {
    background: var(--badge-primary-bg);
    color: var(--badge-primary-text);
    border: 1px solid var(--badge-primary-border);
}
.badge-purple {
    background: var(--badge-blue-bg);
    color: var(--badge-blue-text);
    border: 1px solid var(--badge-blue-border);
}
.badge-magenta {
    background: var(--badge-red-bg);
    color: var(--badge-red-text);
    border: 1px solid var(--badge-red-border);
}
.badge-green {
    background: var(--badge-green-bg);
    color: var(--badge-green-text);
    border: 1px solid var(--badge-green-border);
}

/* ===== Background Effects ===== */
.bg-noise {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}
.bg-grid {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.035;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 60px 60px;
}
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: 0;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.4s;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--nav-border);
}
.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}
.nav-logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    color: #fff;
    font-family: var(--font-display);
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
}
.nav-links a:hover { color: var(--accent-primary); }
.nav-cta {
    padding: 10px 22px;
    background: var(--gradient-main);
    border: none;
    border-radius: 50px;
    color: var(--btn-text-on-gradient);
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    font-family: var(--font-body);
    transition: transform 0.3s, box-shadow 0.3s;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--glow-primary); }
.mobile-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 28px; cursor: pointer; }

/* ===== Section 1: Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}
.hero .glow-orb:nth-child(1) { width: 600px; height: 600px; background: var(--glow-orb-1); top: -200px; right: -200px; }
.hero .glow-orb:nth-child(2) { width: 500px; height: 500px; background: var(--glow-orb-2); bottom: -100px; left: -200px; }
.hero .glow-orb:nth-child(3) { width: 300px; height: 300px; background: var(--glow-orb-3); top: 50%; left: 50%; transform: translate(-50%, -50%); }
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 960px; margin: 0 auto; }
.hero-badges { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 32px; }
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(36px, 6.5vw, 78px);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 28px;
    letter-spacing: -2px;
}
.hero-subtitle {
    font-size: clamp(17px, 2.2vw, 21px);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
}
.hero-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 48px; }
.btn-primary {
    padding: 16px 36px;
    background: var(--gradient-main);
    border: none;
    border-radius: 50px;
    color: var(--btn-text-on-gradient);
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    font-family: var(--font-body);
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px var(--glow-primary); }
.btn-secondary {
    padding: 16px 36px;
    background: transparent;
    border: 2px solid var(--btn-secondary-border);
    border-radius: 50px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    font-family: var(--font-body);
    transition: all 0.3s;
}
.btn-secondary:hover { border-color: var(--accent-primary); background: var(--btn-secondary-hover-bg); }
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}
.hero-stat {
    text-align: center;
}
.hero-stat-num {
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== Section Wrapper ===== */
section {
    position: relative;
    z-index: 1;
}
.section-dark { background: var(--bg-primary); padding: var(--section-padding); }
.section-alt { background: var(--bg-secondary); padding: var(--section-padding); }
/* 在 section-alt 中，card 需要更明显的边框 */
.section-alt .card,
.section-alt .faq-item,
.section-alt .glossary-item,
.section-alt .pricing-card,
.section-alt .generator-wrapper,
.section-alt .newsletter-box { background: var(--bg-card); border-color: var(--border-color); }
.section { background: var(--bg-primary); padding: var(--section-padding); }
.section-accent {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--section-accent-mid) 50%, var(--bg-primary) 100%);
    padding: var(--section-padding);
}
.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--divider-color-left), var(--divider-color-center), var(--divider-color-right), transparent);
    margin: 0 auto;
    max-width: 800px;
}

/* ===== Cards ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: all 0.4s;
    position: relative;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 2px;
    background: var(--gradient-main);
    opacity: 0;
    transition: opacity 0.4s;
}
/* card:hover 已移至文件底部增强版 */
.card:hover::before { opacity: 1; }
.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}
/* 卡片图标颜色 */
.card-icon--primary { background: var(--badge-primary-bg); }
.card-icon--blue { background: var(--badge-blue-bg); }
.card-icon--red { background: var(--badge-red-bg); }
.card-icon--green { background: var(--badge-green-bg); }

.card h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}
.card p { color: var(--text-secondary); font-size: 15px; line-height: 1.7; }

/* ===== Grid Layouts ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ===== Prompt Block ===== */
.prompt-block {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 20px;
}
.prompt-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    background: var(--prompt-header-bg);
    border-bottom: 1px solid var(--border-color);
}
.prompt-header-title {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.prompt-copy-btn {
    padding: 6px 16px;
    background: var(--badge-primary-bg);
    border: 1px solid var(--badge-primary-border);
    border-radius: 50px;
    color: var(--accent-primary);
    font-size: 12px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.3s;
}
.prompt-copy-btn:hover { background: var(--prompt-copy-hover-bg); }
.prompt-body {
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-primary);
    white-space: pre-wrap;
}
.prompt-body .highlight-subject { color: var(--color-subject); }
.prompt-body .highlight-motion { color: var(--color-motion); }
.prompt-body .highlight-camera { color: var(--color-camera); }
.prompt-body .highlight-style { color: var(--color-style); }
.prompt-tags {
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.prompt-tag {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-family: var(--font-mono);
    background: var(--prompt-tag-bg);
    color: var(--text-secondary);
}

/* ===== Formula Block ===== */
.formula-block {
    background: var(--formula-block-bg);
    border: 2px solid var(--formula-block-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    margin: 32px 0;
}
.formula-text {
    font-family: var(--font-mono);
    font-size: clamp(16px, 2.5vw, 24px);
    font-weight: 500;
    letter-spacing: 1px;
}
.formula-part {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 8px;
    margin: 4px;
}
/* 公式各部分颜色 */
.formula-part--subject { background: var(--badge-primary-bg); color: var(--accent-primary); }
.formula-part--motion { background: var(--badge-green-bg); color: var(--accent-green); }
.formula-part--scene { background: var(--badge-yellow-bg); color: var(--accent-yellow); }
.formula-part--camera { background: var(--badge-blue-bg); color: var(--accent-blue); }
.formula-part--style { background: var(--badge-red-bg); color: var(--accent-red); }

/* ===== Table Styles ===== */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
    font-size: 14px;
}
.comparison-table thead th {
    background: var(--bg-tertiary);
    padding: 16px 20px;
    text-align: left;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 15px;
    border-bottom: 2px solid var(--table-header-border);
    white-space: nowrap;
}
.comparison-table tbody td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}
.comparison-table tbody tr:hover td { background: var(--table-hover-bg); }
.comparison-table .winner { color: var(--accent-primary); font-weight: 600; }

/* ===== Accordion / FAQ ===== */
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-question {
    width: 100%;
    padding: 22px 28px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s;
}
.faq-question:hover { color: var(--accent-primary); }
.faq-icon {
    font-size: 24px;
    transition: transform 0.3s;
    color: var(--accent-blue);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 28px;
}
.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 28px 22px;
}
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer p { color: var(--text-secondary); font-size: 15px; line-height: 1.8; }

/* ===== Prompt Generator ===== */
.generator-wrapper {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    position: relative;
    overflow: hidden;
}
.generator-wrapper::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: var(--gradient-main);
}
.gen-row { display: flex; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.gen-field { flex: 1; min-width: 200px; }
.gen-field label {
    display: block;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}
.gen-field input,
.gen-field select,
.gen-field textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    transition: border-color 0.3s;
    outline: none;
}
.gen-field input:focus,
.gen-field select:focus,
.gen-field textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--focus-ring);
}
.gen-field textarea { resize: vertical; min-height: 80px; }
.gen-output {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-top: 24px;
    min-height: 120px;
}
.gen-output-text {
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-primary);
    white-space: pre-wrap;
}

/* ===== 侧边栏 TOC ===== */
.toc-toggle {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px 14px;
    border-radius: 40px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.toc-toggle:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 4px 24px var(--glow-primary);
}
.toc-toggle svg { flex-shrink: 0; }

/* 遮罩层 */
.toc-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.toc-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 侧边栏面板 */
.toc-sidebar {
    position: fixed;
    top: 0;
    right: -340px;
    width: 320px;
    height: 100vh;
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    z-index: 1002;
    transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    box-shadow: -8px 0 40px rgba(0,0,0,0.3);
}
.toc-sidebar.active {
    right: 0;
}

.toc-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.toc-sidebar-header h3 {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}
.toc-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.2s;
    line-height: 1;
}
.toc-close:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.toc-sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}
.toc-sidebar-nav::-webkit-scrollbar { width: 4px; }
.toc-sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.toc-sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.toc-sidebar-list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.toc-sidebar-list li { margin: 0; }
.toc-sidebar-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 24px;
    color: var(--text-secondary);
    font-size: 13px;
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 2px solid transparent;
}
.toc-sidebar-list a:hover {
    color: var(--accent-primary);
    background: var(--badge-primary-bg);
    border-left-color: var(--accent-primary);
}
.toc-sidebar-list a.active {
    color: var(--accent-primary);
    background: var(--badge-primary-bg);
    border-left-color: var(--accent-primary);
    font-weight: 600;
}

.toc-num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent-blue);
    width: 24px;
    flex-shrink: 0;
    opacity: 0.85;
}

/* ===== Testimonial ===== */
.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px;
    position: relative;
}
.testimonial-card::before {
    content: '"';
    font-family: var(--font-display);
    font-size: 80px;
    color: var(--testimonial-quote);
    position: absolute;
    top: 10px;
    left: 20px;
    line-height: 1;
}
.testimonial-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}
.testimonial-author {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 15px;
}
.testimonial-role {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ===== Keyword Cloud ===== */
.keyword-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    padding: 20px 0;
}
.keyword-item {
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 13px;
    font-family: var(--font-mono);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.3s;
    cursor: default;
}
.keyword-item:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: var(--keyword-hover-bg);
}

/* ===== Glossary ===== */
.glossary-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.glossary-item {
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}
.glossary-term {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 16px;
    color: var(--accent-primary);
    margin-bottom: 6px;
}
.glossary-def { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-brand-desc { color: var(--text-secondary); font-size: 14px; line-height: 1.8; margin-top: 12px; }
.footer-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 16px;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--text-secondary); font-size: 14px; }
.footer-links a:hover { color: var(--accent-primary); }
.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 13px;
}

/* ===== Steps ===== */
.steps-list { counter-reset: step; }
.step-item {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
    align-items: flex-start;
}
.step-num {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 800;
    color: var(--btn-text-on-gradient);
}
.step-content h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}
.step-content p { color: var(--text-secondary); font-size: 15px; }

/* ===== Pricing ===== */
.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: all 0.4s;
}
.pricing-card.featured {
    border-color: var(--accent-primary);
    background: linear-gradient(180deg, var(--pricing-featured-glow), var(--bg-card));
    transform: scale(1.05);
}
.pricing-name {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}
.pricing-price {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 800;
    margin: 16px 0;
}
.pricing-features { list-style: none; text-align: left; margin: 24px 0; }
.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--pricing-feature-border);
    color: var(--text-secondary);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.pricing-features li::before {
    content: '✓';
    color: var(--accent-green);
    font-weight: 700;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}
@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}
/* 旧 animate-in 已移至文件底部增强版 */

/* ===== 内联代码标签样式 ===== */
code.code-tag {
    background: var(--code-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-blue);
}

/* ===== 内联样式辅助类（替代 HTML 中的 style= 硬编码颜色） ===== */
.text-subject { color: var(--accent-primary); }
.text-motion { color: var(--accent-green); }
.text-camera { color: var(--accent-blue); }
.text-style { color: var(--accent-red); }
.text-scene { color: var(--accent-yellow); }
.text-muted-inline { color: var(--text-muted); }

.bg-tertiary-block {
    background: var(--bg-tertiary);
    padding: 16px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 13px;
}
.bg-tertiary-block--good { color: var(--accent-green); }
.bg-tertiary-block--bad { color: var(--accent-red); }

.mono-hint {
    margin-top: 12px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-primary);
}

/* ===== Copy 按钮成功状态 ===== */
.prompt-copy-btn.copied {
    background: var(--badge-green-bg);
    border-color: var(--badge-green-border);
    color: var(--accent-green);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    /* TOC 侧边栏手机端适配 */
    .toc-toggle { right: 16px; padding: 8px 12px; }
    .toc-toggle span { display: none; }
    .toc-sidebar { width: 85vw; right: -85vw; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .hero h1 { letter-spacing: -1px; }
    .hero-stats { gap: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .comparison-table { font-size: 12px; }
    .comparison-table thead th,
    .comparison-table tbody td { padding: 10px 12px; }
    .pricing-card.featured { transform: scale(1); }
    .formula-block { padding: 24px; }
    .generator-wrapper { padding: 24px; }
}
@media (max-width: 480px) {
    .hero-ctas { flex-direction: column; align-items: center; }
    .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
}

/* ===== Troubleshooting Cards ===== */
.trouble-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    margin-bottom: 16px;
    transition: border-color 0.3s;
}
.trouble-card:hover { border-color: var(--border-glow); }
.trouble-problem {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 700;
    color: var(--accent-red);
    margin-bottom: 12px;
    line-height: 1.5;
}
.trouble-fix {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.8;
}
.trouble-fix code {
    background: var(--code-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-blue);
}

/* ===== Power Words / Word Groups ===== */
.word-group {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 16px;
}
.word-group-title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 14px;
}
.word-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.word-pill {
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-family: var(--font-mono);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.3s;
    cursor: default;
}
.word-pill:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: var(--word-pill-hover-bg);
}

/* ===== Tip / Warning Boxes ===== */
.tip-box {
    background: var(--tip-box-bg);
    border: 1px solid var(--tip-box-border);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
}
.tip-box strong { color: var(--accent-green); }
.tip-box code {
    background: var(--code-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-blue);
}

/* ===== Newsletter ===== */
.newsletter-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.newsletter-box::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: var(--gradient-main);
}
.newsletter-box h2 {
    font-family: var(--font-display);
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 800;
    margin: 16px 0 12px;
}
.newsletter-form {
    display: flex;
    gap: 12px;
    max-width: 500px;
    margin: 24px auto 0;
}
.newsletter-input {
    flex: 1;
    padding: 14px 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: var(--font-body);
    outline: none;
    transition: border-color 0.3s;
}
.newsletter-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--focus-ring);
}
.newsletter-form .btn-primary { white-space: nowrap; }

/* ===== Blog / News Items ===== */
.news-date {
    font-size: 12px;
    color: var(--accent-primary);
    font-family: var(--font-mono);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

/* ===== Final CTA ===== */
.final-cta {
    text-align: center;
    padding: 100px 24px;
}
.final-cta h2 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 800;
    margin-bottom: 20px;
}
.final-cta p {
    max-width: 600px;
    margin: 0 auto 32px;
    font-size: 1.1rem;
    color: var(--text-secondary);
}
.final-cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Pricing check/cross marks ===== */
.pricing-features .check { color: var(--accent-green); font-weight: 700; margin-right: 4px; }
.pricing-features .cross { color: var(--accent-red); font-weight: 700; margin-right: 4px; }
.pricing-features li.has-icon::before { content: none; }

/* ===== Container narrow ===== */
.container-narrow { max-width: 800px; margin: 0 auto; }

/* ===== Hero 搜索栏 ===== */
.hero-search {
    max-width: 640px;
    margin: 0 auto 40px;
    position: relative;
}
.search-container {
    position: relative;
    display: flex;
    align-items: center;
}
.search-icon {
    position: absolute;
    left: 18px;
    color: var(--text-muted);
    pointer-events: none;
    z-index: 1;
}
#promptSearch {
    width: 100%;
    padding: 16px 60px 16px 50px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}
#promptSearch:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--focus-ring), 0 8px 30px rgba(0,0,0,0.2);
}
#promptSearch::placeholder {
    color: var(--text-muted);
}
.search-kbd {
    position: absolute;
    right: 16px;
    padding: 4px 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
    pointer-events: none;
}
.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    max-height: 400px;
    overflow-y: auto;
    z-index: 100;
    display: none;
    box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}
.search-results.active {
    display: block;
}
.search-result-item {
    padding: 14px 20px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover {
    background: var(--badge-primary-bg);
}
.search-result-title {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}
.search-result-preview {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.search-result-tags {
    display: flex;
    gap: 6px;
    margin-top: 6px;
}
.search-no-results {
    padding: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* ===== 标签筛选栏 ===== */
.tag-filter-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}
.tag-filter-btn {
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 13px;
    font-family: var(--font-mono);
    font-weight: 500;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
}
.tag-filter-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.tag-filter-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #fff;
}

/* ===== Prompt 书签按钮 ===== */
.prompt-bookmark-btn {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.3s;
    padding: 4px 8px;
    line-height: 1;
}
.prompt-bookmark-btn:hover {
    color: var(--accent-yellow);
    transform: scale(1.2);
}
.prompt-bookmark-btn.bookmarked {
    color: var(--accent-yellow);
}

/* ===== Prompt 评分系统 ===== */
.prompt-rating {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 20px 12px;
}
.prompt-rate-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 4px 12px;
    font-size: 12px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s;
    font-family: var(--font-mono);
}
.prompt-rate-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.prompt-rate-btn.voted {
    border-color: var(--accent-primary);
    background: var(--badge-primary-bg);
    color: var(--accent-primary);
}
.rate-count {
    font-weight: 600;
}

/* ===== 随机 Prompt 按钮 ===== */
.random-prompt-bar {
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: center;
    margin-bottom: 32px;
}
.btn-random {
    padding: 10px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-random:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: 0 4px 20px var(--glow-primary);
}

/* ===== Prompt 分享按钮 ===== */
.prompt-share-btn {
    background: none;
    border: none;
    font-size: 14px;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.3s;
    padding: 4px 8px;
}
.prompt-share-btn:hover {
    color: var(--accent-blue);
}

@media (max-width: 768px) {
    .newsletter-form { flex-direction: column; }
    .final-cta-buttons { flex-direction: column; align-items: center; }
    .trouble-card { padding: 20px; }
    .hero-search { margin: 0 auto 32px; }
    #promptSearch { font-size: 14px; padding: 14px 50px 14px 44px; }
    .search-kbd { display: none; }
    .tag-filter-bar { gap: 6px; }
    .tag-filter-btn { padding: 6px 14px; font-size: 12px; }
}

/* ===== Community Showcase (Tweet Embeds) ===== */
.tweet-showcase-grid {
    column-count: 3;
    column-gap: 20px;
}
.tweet-showcase-grid .tweet-item {
    break-inside: avoid;
    margin-bottom: 20px;
}
.tweet-showcase-grid .twitter-tweet {
    margin: 0 !important;
}
.tweet-load-more {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}
.tweet-load-more button {
    padding: 14px 40px;
    background: transparent;
    border: 2px solid var(--badge-primary-border);
    color: var(--accent-primary);
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
}
.tweet-load-more button:hover {
    background: var(--badge-primary-bg);
    border-color: var(--accent-primary);
    box-shadow: 0 0 30px var(--glow-primary);
}
.tweet-item.tweet-hidden {
    display: none;
}
@media (max-width: 1024px) {
    .tweet-showcase-grid { column-count: 2; }
}
@media (max-width: 640px) {
    .tweet-showcase-grid { column-count: 1; }
}

/* ===== Theme Toggle Button ===== */
.theme-toggle {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--theme-toggle-border);
    background: var(--theme-toggle-bg);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    flex-shrink: 0;
}
.theme-toggle:hover {
    background: var(--theme-toggle-hover);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: scale(1.08);
}
.theme-toggle:active {
    transform: scale(0.92);
}

/* 太阳和月亮图标切换动画 */
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    position: absolute;
    width: 20px;
    height: 20px;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
/* 暗色模式：显示太阳，隐藏月亮 */
.theme-toggle .icon-sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}
.theme-toggle .icon-moon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}
/* 亮色模式：显示月亮，隐藏太阳 */
[data-theme="light"] .theme-toggle .icon-sun {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}
[data-theme="light"] .theme-toggle .icon-moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* ===== 增强的按钮点击涟漪动画 ===== */
.btn-primary,
.btn-secondary,
.nav-cta,
.prompt-copy-btn {
    position: relative;
    overflow: hidden;
}
.btn-primary::after,
.nav-cta::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--ripple-x, 50%) var(--ripple-y, 50%), rgba(255,255,255,0.25) 0%, transparent 60%);
    opacity: 0;
    transform: scale(0);
    transition: opacity 0.5s, transform 0.5s;
    pointer-events: none;
}
.btn-primary:active::after,
.nav-cta:active::after {
    opacity: 1;
    transform: scale(2.5);
    transition: opacity 0s, transform 0s;
}

/* ===== 增强的按钮 hover 效果 ===== */
.btn-primary {
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow:
        0 12px 40px var(--glow-primary),
        0 0 0 1px var(--glow-blue);
}
.btn-primary:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-secondary {
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-secondary:active {
    transform: scale(0.97);
}

/* ===== 卡片增强悬浮效果 ===== */
.card {
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}
.card:hover {
    border-color: var(--border-glow);
    transform: translateY(-6px);
    box-shadow:
        0 24px 64px var(--card-hover-shadow),
        0 0 0 1px var(--border-glow);
}

/* ===== FAQ 展开收起动画增强 ===== */
.faq-answer {
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), padding 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.faq-icon {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 滚动入场动画增强（交错） ===== */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.animate-in.visible {
    opacity: 1;
    transform: translateY(0);
}
/* 网格子元素交错动画 */
.grid-2 .animate-in:nth-child(2),
.grid-3 .animate-in:nth-child(2),
.grid-4 .animate-in:nth-child(2) { transition-delay: 0.08s; }
.grid-2 .animate-in:nth-child(3),
.grid-3 .animate-in:nth-child(3),
.grid-4 .animate-in:nth-child(3) { transition-delay: 0.16s; }
.grid-3 .animate-in:nth-child(4),
.grid-4 .animate-in:nth-child(4) { transition-delay: 0.24s; }

/* ===== Glow orb 轻柔浮动动画 ===== */
.glow-orb {
    animation: orbFloat 8s ease-in-out infinite;
}
.glow-orb:nth-child(2) { animation-delay: -3s; animation-duration: 10s; }
.glow-orb:nth-child(3) { animation-delay: -6s; animation-duration: 12s; }
@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(15px, -20px) scale(1.02); }
    66% { transform: translate(-10px, 10px) scale(0.98); }
}
/* 第三个 orb 有自己的居中变换，覆盖通用动画 */
.hero .glow-orb:nth-child(3) {
    animation: orbFloatCenter 12s ease-in-out infinite;
}
@keyframes orbFloatCenter {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    33% { transform: translate(calc(-50% + 15px), calc(-50% - 20px)) scale(1.03); }
    66% { transform: translate(calc(-50% - 10px), calc(-50% + 10px)) scale(0.97); }
}

/* ===== 导航栏内主题切换按钮定位 ===== */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ===== 链接 hover 下划线动画 ===== */
.nav-links a {
    position: relative;
}
.nav-links a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    border-radius: 1px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-links a:not(.nav-cta):hover::after {
    width: 100%;
}

/* ===== Prompt block 复制按钮动画 ===== */
.prompt-copy-btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.prompt-copy-btn:hover {
    transform: translateY(-1px);
}
.prompt-copy-btn:active {
    transform: scale(0.94);
}
.prompt-copy-btn.copied {
    animation: copiedPulse 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes copiedPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* ===== Badge 微交互 ===== */
.badge {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.badge:hover {
    transform: translateY(-2px);
}

/* ===== Hero stat 计数器悬停效果 ===== */
.hero-stat {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.hero-stat:hover {
    transform: translateY(-4px);
}

/* ===== 关键词/药丸标签悬浮效果增强 ===== */
.keyword-item,
.word-pill {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.keyword-item:hover,
.word-pill:hover {
    transform: translateY(-2px);
}

/* ===== 主题切换按钮点击波纹 ===== */
.theme-toggle::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: var(--accent-primary);
    opacity: 0;
    transform: scale(0);
    transition: opacity 0.4s, transform 0.4s;
    pointer-events: none;
}
.theme-toggle:active::after {
    opacity: 0.15;
    transform: scale(2);
    transition: opacity 0s, transform 0s;
}

/* ================================================================
   新功能 CSS — 搜索栏 / 标签筛选 / 收藏 / 评分 / Apple 交互细节
   ================================================================ */

/* ===== Hero 搜索栏 ===== */
.hero-search {
    max-width: 560px;
    margin: 0 auto 32px;
    position: relative;
}
.search-container {
    position: relative;
    display: flex;
    align-items: center;
}
.search-container input {
    width: 100%;
    padding: 14px 48px 14px 48px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    outline: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-appearance: none;
}
.search-container input::placeholder {
    color: var(--text-muted);
}
.search-container input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--focus-ring);
    background: var(--bg-card);
}
.search-icon {
    position: absolute;
    left: 16px;
    color: var(--text-muted);
    pointer-events: none;
    transition: color 0.3s;
}
.search-container input:focus ~ .search-icon,
.search-container input:focus + .search-icon {
    color: var(--accent-primary);
}
.search-kbd {
    position: absolute;
    right: 14px;
    padding: 3px 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    pointer-events: none;
    line-height: 1.4;
}
.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    max-height: 400px;
    overflow-y: auto;
    z-index: 100;
    display: none;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}
.search-results.active { display: block; }
.search-result-item {
    padding: 14px 20px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s;
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--bg-card-hover); }
.search-result-item:first-child { border-radius: 14px 14px 0 0; }
.search-result-item:last-child { border-radius: 0 0 14px 14px; }
.search-result-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}
.search-result-preview {
    font-size: 12px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.search-result-match {
    color: var(--accent-primary);
    font-weight: 600;
}
.search-no-results {
    padding: 24px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* ===== 标签筛选栏 ===== */
.tag-filter-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 32px;
    padding: 4px;
    justify-content: center;
}
.tag-filter-btn {
    padding: 7px 16px;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}
.tag-filter-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: var(--badge-primary-bg);
}
.tag-filter-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #fff;
}
.tag-filter-btn:active {
    transform: scale(0.95);
}

/* ===== Prompt 收藏按钮 ===== */
.prompt-bookmark-btn {
    padding: 6px 12px;
    font-size: 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    line-height: 1;
}
.prompt-bookmark-btn:hover {
    border-color: var(--accent-yellow);
    color: var(--accent-yellow);
    background: rgba(255,214,10,0.06);
}
.prompt-bookmark-btn.bookmarked {
    color: var(--accent-yellow);
    border-color: var(--accent-yellow);
    background: rgba(255,214,10,0.1);
}
.prompt-bookmark-btn:active {
    transform: scale(0.9);
}

/* ===== Prompt 评分按钮 ===== */
.prompt-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}
.prompt-rate-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 12px;
    font-family: var(--font-mono);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.prompt-rate-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.prompt-rate-btn.voted {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: var(--badge-primary-bg);
}
.prompt-rate-btn:active {
    transform: scale(0.92);
}
.rate-count {
    font-weight: 600;
}

/* ===== Apple 风格交互细节增强 ===== */

/* 所有可交互元素的 focus-visible 样式 */
:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px var(--focus-ring);
    border-radius: inherit;
}

/* 全局选中样式 */
::selection {
    background: var(--selection-bg);
    color: var(--text-primary);
}

/* 全局过渡 — 主题切换时的平滑变化 */
*,
*::before,
*::after {
    transition-property: background-color, border-color, color, box-shadow;
    transition-duration: 0s;
}
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
    transition-duration: 0.35s !important;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* 导航栏 Apple 磨砂玻璃加强 */
nav {
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
}

/* 卡片 Apple 风格：微妙的投影层次 */
.card {
    box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 0 0 1px var(--border-color);
}
.card:hover {
    box-shadow:
        0 8px 30px rgba(0,0,0,0.12),
        0 0 0 1px var(--border-glow);
}
[data-theme="dark"] .card {
    box-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 0 0 1px var(--border-color);
}
[data-theme="dark"] .card:hover {
    box-shadow:
        0 12px 40px rgba(0,0,0,0.4),
        0 0 0 1px var(--border-glow);
}

/* Prompt block Apple 风格 */
.prompt-block {
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.prompt-block:hover {
    border-color: var(--border-glow);
}

/* 按钮 hover Apple 精细弹簧效果 */
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        0 8px 30px var(--glow-primary),
        0 0 0 1px var(--glow-blue);
}
.btn-primary:active {
    transform: translateY(0) scale(0.98);
    transition-duration: 0.1s;
}

/* 更精致的 scroll bar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== 移动端优化 ===== */
@media (max-width: 768px) {
    .hero-search { margin: 0 auto 24px; }
    .search-container input {
        font-size: 16px; /* 防止iOS缩放 */
        padding: 12px 44px 12px 44px;
    }
    .search-kbd { display: none; }
    .tag-filter-bar {
        overflow-x: auto;
        flex-wrap: nowrap;
        justify-content: flex-start;
        padding: 4px 0;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .tag-filter-bar::-webkit-scrollbar { display: none; }
    .prompt-rating { flex-wrap: wrap; }
}
@media (max-width: 480px) {
    .search-container input { border-radius: 12px; }
}