:root {
    --primary-color: #0d9488;
    --primary-dark: #0f766e;
    --primary-light: #5eead4;
    --accent-color: #d97706;
    --accent-bright: #fbbf24;
    --text-color: #134e4a;
    --text-muted: #5f7370;
    --light-bg: #ecf4f2;
    --surface: #ffffff;
    --ink: #042f2e;
    --dark-bg: #042f2e;
    --gray-100: #f0f9f8;
    --gray-200: #cce8e4;
    --gray-300: #99cfc7;
    --gray-400: #6b9089;
    --gray-500: #5f7370;
    --gray-600: #3d5a55;
    --gray-700: #2a4541;
    --gray-800: #163833;
    --gray-900: #042f2e;
    --gradient-primary: linear-gradient(135deg, #0d9488 0%, #0f766e 55%, #115e59 100%);
    --gradient-accent: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    --gradient-hero: linear-gradient(165deg, #042f2e 0%, #0f3d3a 45%, #134e4a 100%);
    --shadow-sm: 0 1px 2px rgba(4, 47, 46, 0.06);
    --shadow-md: 0 8px 30px rgba(4, 47, 46, 0.1);
    --shadow-lg: 0 20px 50px rgba(4, 47, 46, 0.14);
    --shadow-glow: 0 0 50px rgba(13, 148, 136, 0.35);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --card-padding: 1.25rem;
    --border-card: 1px solid rgba(4, 47, 46, 0.1);
    --border-card-inner: 1px solid rgba(4, 47, 46, 0.07);
    --border-on-dark: 1px solid rgba(255, 255, 255, 0.1);
    --border-on-dark-subtle: 1px solid rgba(255, 255, 255, 0.07);
    --card-border: var(--border-card);
    --section-padding: 4rem;
    --transition-speed: 0.25s;
    --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
    color: var(--text-color);
    line-height: 1.65;
    background: var(--light-bg);
    overflow-x: hidden;
}

body.zfd233home {
    background: var(--light-bg);
}

/* 防止栅格列内长词/弹性子项撑破布局 */
body.zfd233home .row > [class*="col"] {
    min-width: 0;
}

.zfd233container.container {
    max-width: 1140px;
    padding-left: 1rem;
    padding-right: 1rem;
}

/* ========== 导航 ========== */
.zfd233navbar {
    background: rgba(255, 255, 255, 0.97);
    border-bottom: var(--border-card);
    padding: 0.65rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
    box-shadow: var(--shadow-sm);
}

.zfd233navbar .navbar-toggler {
    border: var(--border-card);
    padding: 0.45rem 0.6rem;
}

.zfd233navbar .navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(13, 148, 136, 0.2);
}

.zfd233navbar-brand img {
    height: 42px;
    width: auto;
}

.zfd233nav-link {
    color: var(--ink) !important;
    font-weight: 500;
    font-size: 0.92rem;
    padding: 0.5rem 0.85rem !important;
    border-radius: var(--radius-sm);
    transition: color var(--transition-speed), background var(--transition-speed);
}

.zfd233nav-link:hover {
    color: var(--primary-dark) !important;
    background: rgba(13, 148, 136, 0.08);
}

/* ========== 通用标题 ========== */
.zfd233section-header {
    max-width: 720px;
    margin: 0 auto 2.5rem;
}

.zfd233section-tag {
    display: inline-block;
    padding: 0.3rem 0.85rem;
    background: rgba(13, 148, 136, 0.12);
    color: var(--primary-dark);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    border-radius: 999px;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}

.zfd233section-tag-on-dark {
    background: rgba(251, 191, 36, 0.15);
    color: var(--accent-bright);
}

.zfd233section-header h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: 0.75rem;
    line-height: 1.25;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.zfd233section-desc {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.75;
    margin: 0;
}

.zfd233section-title-left {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--ink);
    line-height: 1.25;
    margin-bottom: 1rem;
}

.zfd233section-lead {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 1.25rem;
}

/* ========== Hero ========== */
.zfd233hero-section {
    position: relative;
    color: #e7f4f1;
    padding: clamp(3rem, 8vw, 5rem) 0 clamp(3.5rem, 9vw, 5.5rem);
    overflow: hidden;
    background: var(--gradient-hero);
}

.zfd233hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 55% at 85% 15%, rgba(217, 119, 6, 0.18) 0%, transparent 55%),
        radial-gradient(ellipse 55% 45% at 10% 90%, rgba(13, 148, 136, 0.25) 0%, transparent 50%);
    pointer-events: none;
}

.zfd233hero-content {
    position: relative;
    z-index: 1;
}

.zfd233hero-kicker {
    margin-bottom: 1rem;
}

.zfd233hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.4rem 0.9rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    font-size: 0.82rem;
    color: #ccfbf1;
}

.zfd233hero-title {
    font-size: clamp(1.85rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.12;
    margin-bottom: 1rem;
    color: #fff;
}

.zfd233hero-subtitle {
    font-size: 1.05rem;
    opacity: 0.92;
    margin-bottom: 0.85rem;
    line-height: 1.65;
    color: #d1fae5;
}

.zfd233hero-desc {
    font-size: 0.92rem;
    opacity: 0.88;
    line-height: 1.75;
    margin-bottom: 1.75rem;
    max-width: 38rem;
}

.zfd233hero-desc strong {
    color: var(--accent-bright);
    font-weight: 600;
}

.zfd233hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.zfd233btn-hero-primary {
    background: var(--gradient-accent) !important;
    color: #fff !important;
    border: none !important;
    font-weight: 700;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px rgba(217, 119, 6, 0.35);
}

.zfd233btn-hero-primary:hover {
    filter: brightness(1.05);
    transform: translateY(-1px);
}

.zfd233btn-hero-outline {
    background: transparent !important;
    color: #fff !important;
    border: 2px solid rgba(255, 255, 255, 0.45) !important;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
}

.zfd233btn-hero-outline:hover {
    background: rgba(255, 255, 255, 0.1) !important;
    border-color: #fff !important;
}

.zfd233hero-trust {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.zfd233trust-item {
    display: flex;
    align-items: flex-start;
    gap: 0.55rem;
    font-size: 0.85rem;
    opacity: 0.9;
    line-height: 1.45;
}

.zfd233trust-item i {
    color: var(--accent-bright);
    margin-top: 0.15rem;
    flex-shrink: 0;
}

/* Hero 侧栏 */
.zfd233hero-panel {
    height: 100%;
}

.zfd233hero-panel-inner {
    background: rgba(255, 255, 255, 0.06);
    border: var(--border-on-dark-subtle);
    border-radius: var(--radius-xl);
    padding: var(--card-padding);
    backdrop-filter: blur(10px);
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.zfd233hero-panel-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 0.35rem;
}

.zfd233hero-panel-text {
    font-size: 0.85rem;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.88);
    margin-bottom: 1.25rem;
}

.zfd233hero-panel-text strong {
    color: #fef3c7;
}

.zfd233hero-image-wrap {
    position: relative;
    margin-top: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem 0 0;
}

.zfd233hero-glow {
    position: absolute;
    width: min(220px, 75%);
    height: min(220px, 75%);
    background: radial-gradient(circle, rgba(13, 148, 136, 0.55) 0%, transparent 68%);
    border-radius: 50%;
    filter: blur(28px);
    pointer-events: none;
}

.zfd233hero-image {
    position: relative;
    z-index: 1;
    max-width: min(260px, 100%);
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glow);
}

/* ========== About ========== */
.zfd233about-section {
    padding: var(--section-padding) 0;
    background: var(--surface);
}

.zfd233check-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zfd233check-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.92rem;
    color: var(--text-muted);
    margin-bottom: 0.55rem;
    line-height: 1.5;
}

.zfd233check-list i {
    color: var(--primary-color);
    font-weight: bold;
    margin-top: 0.15rem;
}

.zfd233about-tile {
    background: var(--gray-100);
    border: var(--border-card);
    border-radius: var(--radius-lg);
    padding: var(--card-padding);
    height: 100%;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.zfd233about-tile:hover {
    border-color: rgba(13, 148, 136, 0.28);
    box-shadow: var(--shadow-sm);
}

.zfd233tile-num {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--accent-color);
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}

.zfd233about-tile h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.5rem;
    word-break: break-word;
}

.zfd233about-tile p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.65;
}

/* ========== Features Bento ========== */
.zfd233features-section {
    padding: var(--section-padding) 0;
    background: var(--light-bg);
}

.zfd233bento-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 768px) {
    .zfd233bento-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.15rem;
    }
    .zfd233bento-wide {
        grid-column: span 2;
    }
}

.zfd233bento {
    background: var(--surface);
    border: var(--border-card);
    border-radius: var(--radius-lg);
    padding: var(--card-padding);
    box-shadow: none;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.zfd233bento:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: rgba(13, 148, 136, 0.22);
}

.zfd233bento-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    margin-bottom: 1rem;
}

.zfd233bento h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.5rem;
    word-break: break-word;
}

.zfd233bento p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.65;
}

/* ========== Stats ========== */
.zfd233stats-section {
    padding: clamp(2.5rem, 6vw, 3.25rem) 0;
    background: var(--gradient-primary);
    color: #ecfdf5;
}

.zfd233stats-bar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    border: var(--border-on-dark);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

@media (min-width: 768px) {
    .zfd233stats-bar {
        grid-template-columns: repeat(4, 1fr);
    }
}

.zfd233stat-item {
    text-align: center;
    padding: 1rem 0.65rem;
    border-right: 1px solid rgba(255, 255, 255, 0.12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.zfd233stat-item:nth-child(2n) {
    border-right: none;
}

@media (min-width: 768px) {
    .zfd233stat-item {
        border-bottom: none;
        padding: 1rem 0.75rem;
        border-right: 1px solid rgba(255, 255, 255, 0.12);
    }
    .zfd233stat-item:last-child {
        border-right: none;
    }
}

@media (max-width: 767px) {
    .zfd233stat-item:nth-last-child(-n+2) {
        border-bottom: none;
    }
}

.zfd233stat-number {
    font-size: clamp(1.35rem, 4vw, 2.25rem);
    font-weight: 800;
    line-height: 1.15;
    color: #fff;
    margin-bottom: 0.35rem;
}

.zfd233stat-label {
    font-size: 0.82rem;
    opacity: 0.88;
    line-height: 1.35;
}

.zfd233stats-note {
    margin: 1.75rem auto 0;
    font-size: 0.78rem;
    opacity: 0.75;
    text-align: center;
    line-height: 1.6;
    max-width: 52rem;
}

/* ========== Download ========== */
.zfd233download-section {
    padding: var(--section-padding) 0;
    background: var(--surface);
}

.zfd233download-header {
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

.zfd233download-header h2 {
    font-size: clamp(1.45rem, 4vw, 2rem);
    font-weight: 800;
    color: var(--ink);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.zfd233download-subtitle {
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.75;
    max-width: 42rem;
    margin: 0 auto;
}

.zfd233download-card {
    border: var(--border-card);
    border-radius: var(--radius-lg);
    background: var(--gray-100);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: box-shadow var(--transition-speed), border-color var(--transition-speed);
}

.zfd233download-card:hover {
    box-shadow: var(--shadow-sm);
    border-color: rgba(13, 148, 136, 0.22);
}

.zfd233download-card-body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: var(--card-padding);
    min-height: 0;
}

.zfd233ios-card .zfd233download-card-body {
    padding-top: 2.2rem;
}

.zfd233download-card-head h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
    word-break: break-word;
    line-height: 1.3;
}

.zfd233download-card-head .text-muted {
    word-break: break-word;
}

.zfd233platform-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: var(--gradient-accent);
    color: #fff;
    font-size: 0.68rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    z-index: 1;
}

.zfd233download-card-head {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-right: clamp(2.5rem, 18vw, 3.25rem);
    min-width: 0;
}

.zfd233download-card-head .ms-3 {
    margin-left: 0 !important;
    flex: 1;
    min-width: 0;
}

.zfd233platform-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: #fff;
    flex-shrink: 0;
}

.zfd233ios-icon {
    background: linear-gradient(135deg, #475569, #1e293b);
}

.zfd233android-icon {
    background: linear-gradient(135deg, #16a34a, #14532d);
}

.zfd233windows-icon {
    background: linear-gradient(135deg, #2563eb, #1e3a8a);
}

.zfd233download-info {
    background: var(--surface);
    border: var(--border-card-inner);
    border-radius: var(--radius-md);
    padding: 0.875rem 1rem;
    margin-bottom: 1rem;
    flex: 1;
}

.zfd233info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    margin-bottom: 0.55rem;
    font-size: 0.86rem;
    color: var(--gray-600);
    line-height: 1.45;
}

.zfd233info-item:last-child {
    margin-bottom: 0;
}

.zfd233info-item i {
    color: var(--primary-color);
    margin-top: 0.12rem;
    flex-shrink: 0;
}

.zfd233download-action {
    margin-top: auto;
}

.zfd233btn {
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
    line-height: 1.4;
}

.zfd233btn-solid {
    background: var(--gradient-primary) !important;
    color: #fff !important;
    border: none !important;
    font-weight: 600;
    padding: 0.65rem 1rem;
    border-radius: var(--radius-md);
}

.zfd233btn-solid:hover {
    filter: brightness(1.06);
}

.zfd233register-guide {
    background: linear-gradient(135deg, #042f2e 0%, #134e4a 100%);
    color: #ecfdf5;
    border-radius: var(--radius-xl);
    padding: 1.5rem 1.25rem;
    border: var(--border-on-dark-subtle);
}

.zfd233register-guide-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.65rem;
    color: #fff;
}

.zfd233register-guide p {
    opacity: 0.9;
    font-size: 0.9rem;
    line-height: 1.7;
}

.zfd233register-guide strong {
    color: var(--accent-bright);
}

.zfd233guide-steps {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    margin-top: 0.5rem;
}

.zfd233guide-step {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 0.88rem;
}

.zfd233step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: #fff;
    font-weight: 800;
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.zfd233btn-register-lg {
    background: #fff !important;
    color: var(--primary-dark) !important;
    border: none !important;
    font-weight: 700;
    padding: 0.85rem 1.75rem !important;
    border-radius: var(--radius-md) !important;
}

.zfd233btn-register-lg:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* ========== Security ========== */
.zfd233security-section {
    padding: var(--section-padding) 0;
    background: var(--ink);
    color: #ccfbf1;
}

.zfd233security-header {
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

.zfd233security-header h2 {
    color: #fff;
    font-size: clamp(1.45rem, 4vw, 2rem);
    font-weight: 800;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.zfd233security-subtitle {
    color: rgba(204, 251, 241, 0.78);
    font-size: 0.98rem;
    line-height: 1.75;
    max-width: 42rem;
    margin: 0 auto;
}

.zfd233security-card {
    background: rgba(255, 255, 255, 0.05);
    border: var(--border-on-dark);
    border-radius: var(--radius-lg);
    padding: var(--card-padding);
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: background var(--transition-speed), border-color var(--transition-speed);
}

.zfd233security-card:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(251, 191, 36, 0.22);
}

.zfd233security-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 1rem;
    border-radius: var(--radius-md);
    background: var(--gradient-accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.zfd233security-card h3 {
    text-align: center;
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 1rem;
}

.zfd233security-features {
    background: rgba(0, 0, 0, 0.18);
    border-radius: var(--radius-md);
    padding: 0.875rem 1rem;
    border: var(--border-on-dark-subtle);
    flex: 1;
}

.zfd233feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    margin-bottom: 0.5rem;
    font-size: 0.82rem;
    color: rgba(236, 253, 245, 0.88);
    line-height: 1.45;
}

.zfd233feature-item:last-child {
    margin-bottom: 0;
}

.zfd233feature-item i {
    color: var(--accent-bright);
    margin-top: 0.1rem;
    flex-shrink: 0;
}

.zfd233certificate-card {
    background: rgba(255, 255, 255, 0.05);
    border: var(--border-on-dark);
    border-radius: var(--radius-lg);
    padding: var(--card-padding);
    text-align: center;
    height: 100%;
}

.zfd233certificate-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 0.85rem;
    border-radius: 50%;
    background: rgba(13, 148, 136, 0.35);
    color: #99f6e4;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.zfd233certificate-card h4 {
    color: #fff;
    font-size: 0.98rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.zfd233certificate-card p {
    color: rgba(204, 251, 241, 0.75);
    font-size: 0.82rem;
    margin: 0;
    line-height: 1.55;
}

/* ========== FAQ ========== */
.zfd233faq-section {
    padding: var(--section-padding) 0;
    background: var(--surface);
}

.zfd233faq-accordion {
    --bs-accordion-border-width: 0;
    --bs-accordion-border-radius: var(--radius-md);
    --bs-accordion-inner-border-radius: var(--radius-md);
    --bs-accordion-btn-focus-box-shadow: none;
}

.zfd233faq-accordion .accordion-item {
    border: var(--border-card) !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: 0.5rem;
    overflow: hidden;
    background: var(--gray-100);
}

.zfd233faq-accordion .accordion-item:last-child {
    margin-bottom: 0;
}

.zfd233faq-accordion .accordion-button {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ink);
    background: var(--gray-100);
    padding: 0.95rem 2.75rem 0.95rem 1rem;
    line-height: 1.45;
    box-shadow: none !important;
    white-space: normal;
    text-align: left;
    word-break: break-word;
}

.zfd233faq-accordion .accordion-button:not(.collapsed) {
    background: var(--surface);
    color: var(--primary-dark);
}

.zfd233faq-accordion .accordion-body {
    padding: 0 1rem 1rem;
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.zfd233faq-accordion .accordion-body strong {
    color: var(--primary-dark);
}

/* ========== Article ========== */
#article {
    background: var(--gray-100) !important;
}

#article h2 {
    font-weight: 800;
    color: var(--ink);
}

#article .card {
    border: var(--border-card);
    border-radius: var(--radius-lg);
    margin-bottom: 0;
    overflow: hidden;
    transition: box-shadow var(--transition-speed), border-color var(--transition-speed);
}

#article .row > .col > .card {
    height: 100%;
}

#article .card:hover {
    box-shadow: var(--shadow-sm);
    border-color: rgba(13, 148, 136, 0.2);
}

#article .card-body a {
    color: var(--ink);
}

#article .card-body a:hover {
    color: var(--primary-dark);
}

.zfd233thumb-home {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

/* ========== Footer ========== */
.zfd233footer {
    background: #021716;
    color: var(--gray-300);
    padding: 3.5rem 0 2rem;
}

.zfd233footer-title {
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.zfd233footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zfd233footer-links li {
    margin-bottom: 0.45rem;
}

.zfd233footer-link {
    color: var(--gray-300);
    text-decoration: none;
    font-size: 0.88rem;
    transition: color var(--transition-speed);
}

.zfd233footer-link:hover {
    color: var(--primary-light);
}

.zfd233footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.25rem;
    margin-top: 0.5rem;
    font-size: 0.82rem;
    color: var(--gray-400);
}

.zfd233footer-bottom a {
    color: var(--gray-300);
    text-decoration: none;
}

.zfd233footer-bottom a:hover {
    color: var(--primary-light);
}

.zfd233friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.zfd233friend-links li {
    margin: 0;
}

.zfd233friend-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.85rem;
    word-break: break-all;
}

.zfd233friend-links a:hover {
    color: var(--primary-light);
}

/* ========== Bootstrap 按钮覆盖（首页） ========== */
.zfd233home .btn-outline-primary {
    color: var(--primary-dark) !important;
    border-color: var(--primary-color) !important;
    font-weight: 600;
}

.zfd233home .btn-outline-primary:hover {
    background: var(--primary-color) !important;
    color: #fff !important;
}

/* ========== 响应式 ========== */
@media (min-width: 768px) and (max-width: 991px) {
    .zfd233about-section .row > .col-md-6:last-child:nth-child(odd),
    .zfd233download-section .zfd233download-col-last {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (min-width: 992px) {
    .zfd233hero-trust {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1rem 1.5rem;
    }
    .zfd233trust-item {
        flex: 1 1 30%;
        min-width: 140px;
    }
}

@media (max-width: 991.98px) {
    .zfd233hero-trust {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.625rem 0.875rem;
    }

    .zfd233trust-item {
        align-items: flex-start;
    }

    .zfd233trust-item:last-child {
        grid-column: 1 / -1;
        justify-content: center;
        text-align: center;
    }

    .zfd233navbar .navbar-nav {
        width: 100%;
        padding-top: 0.35rem;
    }

    .zfd233navbar .navbar-nav .nav-item {
        width: 100%;
    }

    .zfd233navbar .zfd233nav-link.nav-link {
        display: flex;
        align-items: center;
        width: 100%;
        min-height: 44px;
    }
}

@media (max-width: 991px) {
    :root {
        --section-padding: 3.25rem;
        --card-padding: 1.15rem;
    }

    .zfd233section-header h2 {
        font-size: 1.65rem;
    }

    .zfd233register-guide {
        text-align: center;
    }

    .zfd233guide-steps {
        justify-content: center;
    }

    .zfd233register-guide .text-lg-end {
        text-align: center !important;
    }

    footer.zfd233footer,
    .zfd233footer {
        text-align: center;
    }

    .zfd233footer-title {
        margin-top: 1.25rem;
    }

    .zfd233footer .row > .col-12:first-child .zfd233footer-title {
        margin-top: 0;
    }
}

@media (max-width: 767px) {
    :root {
        --section-padding: 2.5rem;
        --card-padding: 1rem;
    }

    body.zfd233home section .row {
        --bs-gutter-x: 0.75rem;
        --bs-gutter-y: 0.75rem;
    }

    .zfd233hero-section {
        padding-top: 2.25rem;
        padding-bottom: 2.75rem;
    }

    .zfd233hero-content {
        margin-bottom: 0.25rem;
    }

    .zfd233hero-badge {
        max-width: 100%;
        white-space: normal;
        flex-wrap: wrap;
        font-size: 0.78rem;
        line-height: 1.35;
    }

    .zfd233hero-subtitle {
        font-size: 0.95rem;
    }

    .zfd233hero-desc {
        font-size: 0.875rem;
        margin-bottom: 1.35rem;
    }

    .zfd233hero-buttons {
        flex-direction: column;
        gap: 0.65rem;
        margin-bottom: 1.5rem;
    }

    .zfd233hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .zfd233hero-panel-inner {
        padding: 1.1rem;
    }

    .zfd233hero-panel-label {
        letter-spacing: 0.08em;
    }

    .zfd233section-header {
        margin-bottom: 1.75rem;
        padding: 0 0.15rem;
    }

    .zfd233section-header h2 {
        font-size: 1.45rem;
    }

    .zfd233section-desc {
        font-size: 0.92rem;
    }

    .zfd233section-title-left {
        font-size: 1.35rem;
    }

    .zfd233section-lead {
        font-size: 0.92rem;
    }

    .zfd233bento {
        padding: 1.1rem;
    }

    .zfd233stat-item {
        padding: 0.65rem 0.35rem;
    }

    .zfd233stat-label {
        font-size: 0.74rem;
        line-height: 1.3;
    }

    .zfd233download-header {
        padding: 0 0.15rem;
    }

    .zfd233navbar-brand img {
        height: 36px;
    }

    .zfd233navbar .navbar-collapse {
        margin-top: 0.5rem;
        max-height: 70vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: 0.5rem 0.75rem;
        border-radius: var(--radius-md);
        border: var(--border-card);
        background: #fff;
    }

    .zfd233navbar .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .zfd233hero-image {
        max-width: min(220px, 92vw);
    }

    .zfd233download-header h2 {
        font-size: 1.35rem;
    }

    .zfd233download-card {
        height: auto;
    }

    .zfd233download-info {
        flex: none;
    }

    .zfd233download-card-head {
        flex-wrap: nowrap;
        padding-right: 2.75rem;
    }

    .zfd233ios-card .zfd233download-card-head {
        padding-right: 3.35rem;
    }

    .zfd233ios-card .zfd233download-card-body {
        padding-top: 2.35rem;
    }

    .zfd233register-guide {
        text-align: left;
        padding: 1.25rem;
    }

    .zfd233guide-steps {
        flex-direction: column;
        align-items: flex-start;
    }

    .zfd233register-guide .text-lg-end {
        text-align: center !important;
    }

    .zfd233btn-register-lg {
        width: 100%;
    }

    .zfd233security-header h2 {
        font-size: 1.4rem;
    }

    .zfd233security-subtitle {
        font-size: 0.9rem;
        padding: 0 0.15rem;
    }

    .zfd233faq-accordion .accordion-button {
        font-size: 0.85rem;
        padding: 0.85rem 2.65rem 0.85rem 0.85rem;
    }

    .zfd233faq-accordion .accordion-body {
        font-size: 0.85rem;
        padding: 0 0.85rem 0.9rem;
    }

    #article h2 {
        font-size: 1.25rem;
    }

    #article .d-flex.justify-content-between {
        flex-direction: column;
        align-items: stretch !important;
        gap: 0.75rem;
    }

    #article .d-flex .btn-outline-primary {
        width: 100%;
        text-align: center;
    }

    #article .zfd233thumb-home {
        height: 180px;
    }

    #article .card-body {
        padding: 0.85rem;
    }

    #article h3.h5 {
        font-size: 0.92rem;
        line-height: 1.45;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .zfd233faq-section .section-header.mb-5 {
        margin-bottom: 1.5rem !important;
    }

    body.zfd233home .btn {
        touch-action: manipulation;
    }

    .zfd233bento:hover,
    .zfd233about-tile:hover,
    .zfd233download-card:hover,
    .zfd233security-card:hover,
    #article .card:hover {
        transform: none;
    }
}

@media (max-width: 575px) {
    .zfd233container.container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .zfd233section-tag {
        font-size: 0.72rem;
        letter-spacing: 0.03em;
        padding: 0.28rem 0.7rem;
    }

    .zfd233section-tag-on-dark {
        letter-spacing: 0.03em;
    }

    .zfd233hero-panel-inner {
        padding: 1rem 0.85rem;
    }

    .zfd233hero-panel-text {
        font-size: 0.82rem;
    }

    .zfd233about-tile {
        padding: 1rem 0.9rem;
    }

    .zfd233stat-number {
        font-size: 1.15rem;
    }

    .zfd233stat-label {
        font-size: 0.68rem;
    }

    .zfd233stats-note {
        font-size: 0.72rem;
        padding: 0 0.25rem;
    }

    .zfd233platform-icon {
        width: 46px;
        height: 46px;
        font-size: 1.2rem;
    }

    .zfd233download-card-head {
        padding-right: 2.5rem;
    }

    .zfd233ios-card .zfd233download-card-head {
        padding-right: 3rem;
    }

    #article .zfd233thumb-home {
        height: 160px;
    }

    #article.py-5 {
        padding-top: 2rem !important;
        padding-bottom: 2rem !important;
    }

    .zfd233footer-bottom a {
        display: inline-block;
        margin: 0.1rem 0;
    }
}

/* ========== 全局 ========== */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 72px;
    font-size: 16px;
}

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

.btn:active {
    transform: scale(0.98);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 148, 136, 0.22);
}

/* 列表页/内容页 */
.pagebar .pagelist {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.pagebar .pagelist li {
    display: inline-flex;
    margin: 0;
}

.listbox .e2 li {
    padding-bottom: 0.75rem !important;
    margin-bottom: 0.75rem !important;
}

@media (max-width: 767px) {
    .listbox .e2 li h2.h5 {
        font-size: 1rem;
        margin-bottom: 0.35rem;
        line-height: 1.35;
    }

    .listbox .e2 li p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .zfd233thumb-list,
    .zfd233thumb-related {
        height: 72px !important;
    }

    .zfd233thumb-side {
        height: 50px !important;
    }

    .zfd233thumb-cover {
        max-width: 100% !important;
        width: 100%;
        height: 170px !important;
        margin: 0 auto;
    }
}

@media (max-width: 575px) {
    .zfd233thumb-list,
    .zfd233thumb-related {
        height: 64px !important;
    }

    .zfd233thumb-side {
        height: 46px !important;
    }

    .zfd233thumb-cover {
        height: 150px !important;
    }

    .pagebar .pagelist {
        gap: 0.35rem;
    }
}

.app-preview-container {
    position: relative;
    perspective: 1000px;
    height: 500px;
}

.app-preview {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}

.app-screen {
    position: absolute;
    width: 280px;
    height: 580px;
    border-radius: 40px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.app-screen-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.form-control {
    width: 100%;
}

.listbox .card,
.modal .card {
    margin-bottom: 1rem;
}

.modal-dialog {
    margin: 1rem auto;
}

@media (max-width: 575px) {
    .modal-dialog {
        margin: 0.5rem;
    }
}