:root {
    --nav-height: 64px;
    --radius-sm: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --shadow-card: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
    --color-primary: #d40e0e;
    --color-primary-light: #f05631;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #1f2937;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

/* ========== 导航 ========== */
.nav-wrap {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 48px;
    transition: background-color var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}
.nav-wrap.transparent {
    background-color: transparent;
    backdrop-filter: none;
}
.nav-wrap.scrolled {
    background-color: rgba(255,255,255,0.85);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    /* box-shadow: 0 1px 0 rgba(0,0,0,0.05); */
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.nav-logo img {
    height: 36px;
    width: auto;
    display: block;
}
.nav-logo span {
    font-size: 18px;
    font-weight: 600;
    color: #111;
}
.nav-download-btn-wrap {
    display: flex;
    gap: 10px;
    flex-direction: row;
    align-items: center;
}
.nav-download-wrap {
    position: relative;
}
.nav-download-btn {
    display: block;
    padding: 10px 24px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}
.nav-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212, 14, 14, 0.4);
}
/* .nav-download-btn-wx {
    background: #000000;
}
.nav-download-btn-wx:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
} */
.nav-download-btn-wx {
    background: #34a853;
}
.nav-download-btn-wx:hover {
    box-shadow: 0 8px 24px rgba(52, 168, 83, 0.25);
}
.nav-download-popover {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    width: 200px;
    padding: 20px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-hover);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    z-index: 1001;
}
.nav-download-wrap:hover .nav-download-popover {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.nav-download-popover .qrcode {
    width: 160px;
    height: 160px;
    margin: 0 auto 12px;
    background: #f3f4f6;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.nav-download-popover .qrcode img { max-width: 100%; max-height: 100%; object-fit: contain; }
.nav-download-popover .tip {
    text-align: center;
    font-size: 13px;
    color: #6b7280;
    margin-bottom: 0;
}

/* ========== Banner ========== */
.banner-container {
    background-image: url('./img/banner.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.banner {
    min-height: 100vh;
    padding: calc(var(--nav-height) + 60px) 48px 80px;
    background: linear-gradient(160deg, rgba(224, 231, 255, 0.6) 0%, rgba(240, 244, 255, 0.8) 35%, rgba(248, 250, 252, 0.9) 100%);
    display: flex;
    align-items: center;
}
.contain {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}
.banner-content {
    max-width: 768px;
}
.banner h1 {
    font-size: clamp(2.5rem, 8vw, 6rem);
    font-weight: bolder;
    color: #111;
    margin: 0 0 16px;
    letter-spacing: -0.02em;
    animation: fadeUp 0.8s ease-out;
}
.banner-desc {
    font-size: 21px;
    color: #4b5563;
    margin: 0 0 28px;
    line-height: 1.7;
    animation: fadeUp 0.8s ease-out 0.1s both;
    text-align: justify;
}
.banner-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    margin-bottom: 48px;
    animation: fadeUp 0.8s ease-out 0.2s both;
}
.banner-links span, .banner-links a, .banner-links .banner-link-btn {
    font-size: 16px;
    color: #6b7280;
    transition: color var(--transition);
}
.banner-links a:hover { color: var(--color-primary); }
.banner-link-btn-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
}
.banner-link-btn {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    font: inherit;
}
.banner-link-btn:hover { color: var(--color-primary); }
.download-platforms {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    animation: fadeUp 0.8s ease-out 0.3s both;
}
@media (min-width: 768px) {
    .download-platforms {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}
.download-card {
    position: relative;
    width: 100%;
}
.download-card-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 20px;
    border: none;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
    font-size: 18px;
    line-height: 1;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}
.download-card-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212, 14, 14, 0.25);
}
.download-card-btn:active {
    opacity: 0.95;
}
.download-card-btn .btn-icon {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    object-fit: contain;
}
.download-card-btn-ios {
    background: #000000;
}
.download-card-btn-ios:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}
.download-card-btn-android {
    background: #34a853;
}
.download-card-btn-android:hover {
    box-shadow: 0 8px 24px rgba(52, 168, 83, 0.25);
}
.download-card-btn-wxapp {
    background: #677de0;
}
.download-card-btn-wxapp:hover {
    box-shadow: 0 8px 24px rgba(103, 125, 224, 0.25);
}
.download-card-popover {
    position: absolute;
    left: 50%;
    bottom: calc(100% + 12px);
    transform: translateX(-50%) translateY(4px);
    width: 200px;
    padding: 20px;
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-hover);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    z-index: 10;
}
.download-card:hover .download-card-popover {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.download-card-popover .popover-qr {
    width: 160px;
    height: 160px;
    margin: 0 auto 12px;
    background: #f3f4f6;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.download-card-popover .popover-qr img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}
.download-card-popover .popover-tip {
    text-align: center;
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 0;
}
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== 四个小卡片 ========== */
.section-cards {
    padding: 80px 0;
    /* max-width: 1200px; */
    margin: 0 auto;
}
.cards-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-card);
    transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}
.feature-card-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #1f2937;
}
.feature-card-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}
.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    color: #111;
    margin: 0 0 12px;
}
.feature-card p {
    font-size: 16px;
    color: #6b7280;
    margin: 0;
    line-height: 1.6;
}

/* ========== 介绍模块 ========== */
.section-intro {
    padding: 88px 48px 112px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 50%, #eef2ff 100%);
    position: relative;
    overflow: hidden;
}
/* .section-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.15), transparent);
} */
/* .intro-inner {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
} */
/* .intro-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--color-primary);
    text-transform: uppercase;
    margin-bottom: 12px;
} */
.section-intro h2 {
    font-size: clamp(1.75rem, 4vw, 3.25rem);
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 12px;
    line-height: 1.5;
    /* letter-spacing: -0.02em; */
}
.section-intro h2::after {
    content: '';
    display: block;
    width: 48px;
    height: 8px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: 5px;
    margin-top: 6px;
}
.section-intro .lead {
    font-size: 18px;
    color: #475569;
    line-height: 1.65;
    margin: 0 0 40px;
    /* max-width: 640px; */
    margin-left: auto;
    margin-right: auto;
}
.intro-points {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.section-intro .points {
    list-style: none;
    padding: 0;
    margin: 0;
    display: contents;
}
.section-intro .points li {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 22px;
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(37, 99, 235, 0.08);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    color: #334155;
    font-size: 16px;
    line-height: 1.6;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.section-intro .points li:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.1);
    border-color: rgba(37, 99, 235, 0.18);
}
.section-intro .points li::before {
    content: '✓';
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    border-radius: 50%;
}
.section-intro .points li span {
    flex: 1;
}
@media (max-width: 640px) {
    .intro-points {
        grid-template-columns: 1fr;
    }
    .nav-download-btn {padding: 8px 20px; font-size: 14px;}
    .nav-logo img {height: 32px;}
}

/* ========== Toast 提示 ========== */
.toast-tip {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translateX(-50%) translateY(-50%);
    padding: 12px 24px;
    background: rgba(0, 0, 0, 0.78);
    color: #fff;
    font-size: 16px;
    border-radius: 8px;
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}
.toast-tip.is-show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ========== 底部版权 ========== */
.footer {
    background: #fff;
    padding: 32px 24px;
    text-align: center;
    font-size: 14px;
    color: #6b7280;
    /* border-top: 1px solid #e5e7eb; */
}
.footer p { margin: 0; }
.footer a { color: var(--color-primary); }
.footer a:hover { text-decoration: underline; }

@media (max-width: 1024px) {
    .cards-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .nav-wrap { padding: 0 20px; }
    .banner { padding: calc(var(--nav-height) + 40px) 20px 60px; }
    .banner-desc { font-size: 16px; }
    .feature-card p { font-size: 14px; }
    .section-cards { padding: 60px 0; }
    .cards-row { grid-template-columns: 1fr; }
    .section-intro { padding: 60px 20px 80px; }
    .section-intro .lead { font-size: 16px; margin-bottom: 32px; }
    .section-intro .points li { padding: 16px 18px; font-size: 14px; }
    .nav-download-btn-app { display: none; }
    .banner-links span, .banner-links a, .banner-links .banner-link-btn { font-size: 14px; }
    .download-card-btn { font-size: 15px;padding: 14px 20px; }
    .download-card-btn .btn-icon { width: 24px; height: 24px; }
    .toast-tip {
        padding: 12px 12px;
        min-width: 270px;
        text-align: center;
    }
}

/* ========== 单页弹窗 ========== */
.page-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}
.page-modal-overlay.is-open {
    opacity: 1;
    visibility: visible;
}
.page-modal {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: 90%;
    max-width: 640px;
    max-height: 85vh;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
    z-index: 2001;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.page-modal-overlay.is-open .page-modal {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}
.page-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid #e5e7eb;
    flex-shrink: 0;
}
.page-modal-title {
    font-size: 18px;
    font-weight: 600;
    color: #111;
    margin: 0;
}
.page-modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: #f3f4f6;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    line-height: 1;
    color: #6b7280;
    padding: 0;
    transition: background var(--transition), color var(--transition);
}
.page-modal-close:hover {
    background: #e5e7eb;
    color: #111;
}
.page-modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}
.page-modal-body .cms-page-content {
    font-size: 15px;
    line-height: 1.75;
    color: #374151;
}
.page-modal-body .cms-page-content h1,
.page-modal-body .cms-page-content h2,
.page-modal-body .cms-page-content h3 {
    margin-top: 1.2em;
    margin-bottom: 0.5em;
    color: #111;
}
.page-modal-body .cms-page-content p { margin: 0 0 0.8em; }
.page-modal-body .cms-page-content ul,
.page-modal-body .cms-page-content ol { margin: 0 0 0.8em; padding-left: 1.5em; }
.page-modal-loading {
    text-align: center;
    padding: 40px 24px;
    color: #6b7280;
}