:root {
    --hd-red: #ff3b30;
    --hd-red-dark: #e6342a;
    --hd-dark: #1a1a1a;
}

body {
    font-family: -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.logo {
    width: 32px;
}

.logo-small {
    width: 20px;
}

.text-red {
    color: var(--hd-red) !important;
}

.bg-red {
    background-color: var(--hd-red) !important;
}

.bg-red:hover {
    background-color: var(--hd-red-dark) !important;
}

.btn-red {
    background-color: var(--hd-red);
    color: #fff;
    border: none;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 8px;
    transition: all .3s;
}

.btn-red:hover {
    background-color: var(--hd-red-dark);
    color: #fff;
    box-shadow: 0 4px 20px rgba(255, 59, 48, .35);
}

.btn-outline-dark {
    border: 1px solid #dee2e6;
    color: var(--hd-dark);
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 8px;
    transition: all .3s;
}

.btn-outline-dark:hover {
    background-color: #f8f9fa;
    border-color: #ced4da;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.navbar {
    transition: all .3s;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, .05);
}

.nav-link {
    color: #6c757d;
    font-weight: 500;
    font-size: .9rem;
    transition: color .2s;
}

.nav-link:hover {
    color: var(--hd-red);
}

.hero-gradient {
    background: linear-gradient(180deg, #f8f9fc 0%, #fff 50%, #f0f2f8 100%);
}

.scene-card, .adv-item, .solution-card, .guide-card, .testimonial-card, .faq-item {
    opacity: 0;
    transform: translateY(40px);
    transition: all .6s cubic-bezier(.16, 1, .3, 1);
}

.scene-card.visible, .adv-item.visible, .solution-card.visible, .guide-card.visible, .testimonial-card.visible, .faq-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.scene-card:hover {
    border-color: rgba(255, 59, 48, .2) !important;
    box-shadow: 0 10px 40px rgba(255, 59, 48, .05);
}

.scene-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(255, 59, 48, .1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .3s;
}

.scene-card:hover .scene-icon {
    background: var(--hd-red);
}

.scene-card:hover .scene-icon i {
    color: #fff !important;
}

.guide-card:hover {
    border-color: rgba(255, 59, 48, .2) !important;
}

.guide-card:hover h5 {
    color: var(--hd-red);
}

.phone-mockup {
    width:280px;
    border-radius: 2rem;
    border: 6px solid #212529;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .2);
}

.phone-mockup-sm {
    border-radius: 1.8rem;
    border: 5px solid #212529;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, .18);
}

.accordion-button:not(.collapsed) {
    background-color: transparent;
    box-shadow: none;
    color: var(--hd-dark);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(0, 0, 0, .125);
}

footer a:hover {
    color: var(--hd-red) !important;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.download-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    border-radius: .75rem;
    background: #f8f9fa;
    border: 1px solid #f1f3f5;
    text-decoration: none;
    color: inherit;
    transition: all .2s;
}

.download-btn:hover {
    background: #f1f3f5;
}

.download-btn:active {
    transform: scale(.98);
}

.header-w {
    width: 95vw;
}

@media (max-width: 767px) {
    .section-container {
        padding: 0 3rem;
    }

    #app-show-1 {
        display: none;
    }

    .phone-mockup {
        width: 40vw;
    }
}

@media (min-width: 767px) {
    .header-w {
        width: 60vw
    }
}

/* ========== 注册弹窗样式 ========== */
.register-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1001;
}

.register-modal-content {
    background-color: #fff;
    border-radius: 12px;
    width: 85%;
    max-width: 440px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    animation: registerModalSlideIn 0.3s ease-out;
    overflow: hidden;
}

@keyframes registerModalSlideIn {
    from {
        transform: translateY(-60px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.register-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid #e8e8e8;
}

.register-modal-title {
    font-size: 22px;
    font-weight: 600;
    color: #333;
}

.register-modal-close {
    font-size: 28px;
    cursor: pointer;
    color: #999;
    line-height: 1;
    transition: color 0.2s;
    background: none;
    border: none;
    padding: 0;
}

.register-modal-close:hover {
    color: #333;
}

.register-modal-body {
    padding: 28px 24px 20px;
}

.register-form-group {
    margin-bottom: 18px;
}

.register-form-label {
    display: block;
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
}

.register-form-input {
    width: 100%;
    height: 44px;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 0 14px;
    font-size: 15px;
    color: #333;
    box-sizing: border-box;
    outline: none;
    transition: border-color 0.2s;
}

.register-form-input:focus {
    border-color: red;
}

.register-form-input::placeholder {
    color: #bbb;
}

.register-code-row {
    display: flex;
    gap: 12px;
    align-items: center;
}

.register-send-code-btn {
    white-space: nowrap;
    height: 44px;
    padding: 0 16px;
    border: none;
    border-radius: 8px;
    background-color: red;
    color: #fff;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s, opacity 0.2s;
    flex-shrink: 0;
}

.register-send-code-btn:hover {
    background-color: red;
}

.register-send-code-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    opacity: 0.7;
}

.register-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 0 24px 24px;
}

.register-btn-cancel {
    height: 42px;
    padding: 0 28px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fff;
    color: #666;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.2s;
}

.register-btn-cancel:hover {
    border-color: #bbb;
    color: #333;
}

.register-btn-submit {
    height: 42px;
    padding: 0 28px;
    border: none;
    border-radius: 8px;
    background-color: red;
    color: #fff;
    font-size: 15px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.register-btn-submit:hover {
    background-color: red;
}

.register-btn-submit:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.register-error-msg {
    color: #e74c3c;
    font-size: 13px;
    margin-top: 4px;
    display: none;
}

/* 移动端注册弹窗适配 */
@media all and (max-width: 768px) {
    .register-modal-content {
        width: 85%;
        max-width: none;
        margin: 0 20px;
    }

    .register-modal-header {
        padding: 16px 18px;
    }

    .register-modal-title {
        font-size: 18px;
    }

    .register-modal-body {
        padding: 20px 18px 16px;
    }

    .register-modal-footer {
        padding: 0 18px 20px;
    }

    .register-code-row {
        flex-direction: column;
        gap: 10px;
    }

    .register-send-code-btn {
        width: 100%;
        text-align: center;
    }

    .register-btn-cancel,
    .register-btn-submit {
        flex: 1;
        text-align: center;
    }
}

@media all and (max-width: 480px) {
    .register-modal-content {
        width: 85%;
        margin: 0 12px;
    }

    .register-modal-title {
        font-size: 16px;
    }

    .register-form-input {
        height: 40px;
        font-size: 14px;
    }

    .register-send-code-btn {
        height: 40px;
        font-size: 13px;
    }

    .register-btn-cancel,
    .register-btn-submit {
        height: 38px;
        padding: 0 20px;
        font-size: 14px;
    }
}