:root {
    --bg-color: #030214;
    --bg-gradient: radial-gradient(circle at 20% 20%, rgba(54, 109, 255, 0.22), transparent 60%),
        radial-gradient(circle at 80% 0%, rgba(255, 77, 191, 0.18), transparent 50%),
        linear-gradient(160deg, #04031a 0%, #010006 40%, #04021c 100%);
    --primary: #7b6cff;
    --primary-soft: rgba(123, 108, 255, 0.12);
    --secondary: #28f1ff;
    --accent: #ff5cc1;
    --text-strong: #f7f7ff;
    --text-base: rgba(236, 238, 255, 0.82);
    --text-dim: rgba(236, 238, 255, 0.54);
    --surface: rgba(16, 18, 44, 0.75);
    --border: rgba(123, 108, 255, 0.25);
    --max-width: 1180px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 12px;
    --shadow: 0 26px 60px rgba(8, 12, 40, 0.65);
    --noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 400'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='2.6' numOctaves='5' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='400' height='400' filter='url(%23n)'/%3E%3C/svg%3E");
    --mouse-x: 50%;
    --mouse-y: 50%;
}

body {
    font-family: 'Urbanist', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-color);
    background-image: var(--bg-gradient),
        radial-gradient(circle at var(--mouse-x) var(--mouse-y), rgba(123, 108, 255, 0.06), transparent 65%);
    background-attachment: fixed;
    color: var(--text-base);
    min-height: 100vh;
    position: relative;
    transition: background-image 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

.will-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.noise-overlay {
    position: fixed;
    inset: 0;
    background-image: var(--noise);
    opacity: 0.03;
    pointer-events: none;
    mix-blend-mode: screen;
    z-index: -10;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 clamp(18px, 4vw, 32px);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(16px);
    background: rgba(5, 6, 18, 0.82);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.site-header > .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--secondary);
    border: 1px solid rgba(40, 241, 255, 0.38);
    background: linear-gradient(140deg, rgba(40, 241, 255, 0.15), rgba(123, 108, 255, 0.07));
    box-shadow: 0 12px 32px rgba(40, 241, 255, 0.18);
}

.brand-meta {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    color: var(--text-strong);
    letter-spacing: 2px;
}

.brand-tagline {
    font-size: 0.75rem;
    color: var(--text-dim);
    letter-spacing: 1px;
}

.nav {
    display: flex;
    gap: 22px;
    font-size: 0.95rem;
    align-items: center;
}

.nav-link {
    color: var(--text-dim);
    padding: 8px 12px;
    border-radius: 999px;
    transition: all 0.25s ease;
}

.nav-link:hover,
.nav-link:focus {
    color: var(--text-strong);
    background: rgba(123, 108, 255, 0.12);
}

.nav-cta {
    background: linear-gradient(120deg, rgba(123, 108, 255, 0.28), rgba(40, 241, 255, 0.18));
    color: var(--text-strong);
    border: 1px solid rgba(123, 108, 255, 0.4);
}

main {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding-bottom: 120px;
}

section {
    padding: clamp(50px, 6vw, 80px) 0;
    scroll-margin-top: 80px;
    position: relative;
}

/* Specific section spacing optimization */
.features {
    padding: clamp(40px, 5vw, 60px) 0;
}

.technology {
    padding: clamp(40px, 5vw, 60px) 0;
}

.download {
    padding: clamp(40px, 5vw, 60px) 0;
}

.cta {
    padding: clamp(30px, 4vw, 50px) 0;
}

.hero {
    padding-top: clamp(100px, 15vw, 160px);
    padding-bottom: clamp(60px, 10vw, 100px);
}

.hero-content {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: clamp(32px, 4vw, 56px);
    align-items: center;
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

.eyebrow {
    font-size: 0.85rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--secondary);
    opacity: 0.8;
    margin-bottom: 18px;
}

.hero-text h1 {
    font-size: clamp(2.4rem, 4vw, 3.4rem);
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-strong);
    margin-bottom: 24px;
    font-family: 'Orbitron', sans-serif;
}

.hero-text p {
    font-size: 1.05rem;
    color: var(--text-base);
    max-width: 540px;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn.primary {
    background: linear-gradient(130deg, #7b6cff, #28f1ff);
    color: #050312;
    box-shadow: 0 16px 38px rgba(123, 108, 255, 0.35);
}

.btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 48px rgba(123, 108, 255, 0.45);
}

.btn.ghost {
    border: 1px solid rgba(40, 241, 255, 0.4);
    color: var(--secondary);
    background: rgba(13, 18, 45, 0.6);
}

.btn.ghost:hover {
    background: rgba(40, 241, 255, 0.12);
}

.btn.is-disabled {
    pointer-events: none;
    opacity: 0.5;
}

.btn.secondary {
    border: 1px solid rgba(123, 108, 255, 0.38);
    color: var(--text-strong);
    background: rgba(16, 18, 44, 0.6);
}

.btn.secondary:hover {
    background: rgba(123, 108, 255, 0.18);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: clamp(16px, 3vw, 24px);
    margin-top: clamp(24px, 4vw, 32px);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.stat .value {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--secondary);
    font-family: 'Orbitron', sans-serif;
}

.stat .label {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.hero-visual {
    position: relative;
    display: grid;
    place-items: center;
}

.orbit-card {
    position: relative;
    width: clamp(280px, 45vw, 420px);
    padding: 40px;
    border-radius: var(--radius-lg);
    background: linear-gradient(150deg, rgba(19, 23, 55, 0.94), rgba(7, 10, 36, 0.92));
    border: 1px solid rgba(123, 108, 255, 0.28);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.orbit-card::before {
    content: "";
    position: absolute;
    inset: -120px 20% auto;
    height: 220px;
    background: radial-gradient(circle, rgba(40, 241, 255, 0.25), transparent 75%);
    filter: blur(30px);
    z-index: -5;
}

.glow {
    position: absolute;
    inset: 20% -80px -40px -80px;
    background: radial-gradient(circle, rgba(123, 108, 255, 0.15), transparent 65%);
    filter: blur(45px);
    z-index: 0;
}

.device-frame {
    position: relative;
    z-index: 1;
}

.device-frame::after {
    content: "";
    position: absolute;
    inset: -16px;
    border-radius: 36px;
    background: linear-gradient(130deg, rgba(123, 108, 255, 0.35), rgba(40, 241, 255, 0.22));
    opacity: 0.35;
    filter: blur(30px);
    z-index: -1;
}

.screen {
    background: rgba(7, 10, 30, 0.92);
    border-radius: 28px;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.04);
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.screen-header {
    display: flex;
    justify-content: space-between;
    color: var(--text-dim);
    font-size: 0.85rem;
    margin-bottom: 18px;
}

.status {
    color: var(--accent);
    font-weight: 500;
}

.card-stack {
    display: grid;
    gap: 16px;
}

.collectible-card {
    background: rgba(14, 19, 48, 0.88);
    border-radius: 20px;
    border: 1px solid rgba(123, 108, 255, 0.3);
    padding: 18px;
    display: grid;
    gap: 6px;
}

.collectible-card .card-id {
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.collectible-card .card-title {
    font-size: 1.25rem;
    color: var(--text-strong);
    font-family: 'Orbitron', sans-serif;
}

.collectible-card .card-meta {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.device-base {
    margin: 26px auto 0;
    width: 70%;
    height: 12px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(40, 241, 255, 0.12), rgba(123, 108, 255, 0.4), rgba(40, 241, 255, 0.12));
}

.orbital {
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.tag {
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid rgba(40, 241, 255, 0.32);
    color: var(--secondary);
    font-size: 0.75rem;
}

.section-heading {
    text-align: center;
    max-width: 760px;
    margin: 0 auto clamp(28px, 4vw, 42px);
}

.section-heading.align-left {
    text-align: left;
    margin: 0 0 32px;
}

.section-heading h2 {
    font-size: clamp(2rem, 3vw, 2.6rem);
    color: var(--text-strong);
    font-family: 'Orbitron', sans-serif;
    margin-bottom: 16px;
}

.section-heading p {
    color: var(--text-base);
    font-size: 1rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.feature-card {
    background: rgba(16, 18, 44, 0.78);
    border: 1px solid rgba(123, 108, 255, 0.25);
    border-radius: var(--radius-md);
    padding: 30px;
    display: grid;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

.feature-card::after {
    content: "";
    position: absolute;
    inset: auto auto -80px -40px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(123, 108, 255, 0.3), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover::after {
    opacity: 1;
}

.feature-card h3 {
    font-size: 1.35rem;
    color: var(--text-strong);
    font-family: 'Orbitron', sans-serif;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--text-base);
    line-height: 1.6;
}

.feature-meta {
    font-size: 0.85rem;
    color: var(--secondary);
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    align-items: center;
    gap: 38px;
}

.app-panel {
    background: rgba(12, 16, 40, 0.78);
    border: 1px solid rgba(123, 108, 255, 0.28);
    border-radius: var(--radius-md);
    padding: 28px;
    display: grid;
    gap: 14px;
}

.app-panel h3 {
    font-family: 'Orbitron', sans-serif;
    color: var(--text-strong);
}

.app-panel ul {
    display: grid;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text-base);
}

.phone-mockup {
    position: relative;
    justify-self: center;
}

.mockup-screen {
    width: 260px;
    border-radius: 36px;
    padding: 28px;
    background: linear-gradient(160deg, rgba(9, 12, 32, 0.92), rgba(17, 20, 48, 0.92));
    border: 1px solid rgba(123, 108, 255, 0.32);
    box-shadow: 0 24px 48px rgba(7, 11, 36, 0.6);
    display: grid;
    gap: 18px;
}

.mockup-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.05rem;
    color: var(--secondary);
}

.mockup-card {
    border-radius: 24px;
    padding: 20px;
    background: rgba(40, 241, 255, 0.08);
    border: 1px solid rgba(40, 241, 255, 0.35);
    display: grid;
    gap: 8px;
}

.mockup-card h4 {
    font-size: 1.1rem;
    color: var(--text-strong);
}

.mockup-card p {
    font-size: 0.85rem;
    color: var(--text-base);
}

.btn.small {
    padding: 8px 16px;
    font-size: 0.8rem;
}

.mockup-list {
    display: grid;
    gap: 14px;
}

.list-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--text-base);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding-bottom: 8px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    align-items: center;
}

.tech-list {
    display: grid;
    gap: 18px;
    font-size: 0.95rem;
    color: var(--text-base);
}

.tech-list strong {
    color: var(--secondary);
    font-weight: 500;
    margin-right: 4px;
}

.tech-matrix {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
}

.matrix-card {
    padding: 26px;
    border-radius: var(--radius-md);
    background: rgba(16, 18, 44, 0.82);
    border: 1px solid rgba(123, 108, 255, 0.25);
    text-align: center;
    display: grid;
    gap: 8px;
    box-shadow: 0 18px 36px rgba(8, 12, 40, 0.42);
}

.matrix-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.6rem;
    color: var(--primary);
}

.matrix-desc {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.cases {
    position: relative;
}

.case-timeline {
    display: grid;
    gap: 28px;
}

.case-card {
    background: rgba(12, 14, 36, 0.8);
    border: 1px solid rgba(40, 241, 255, 0.26);
    border-radius: var(--radius-md);
    padding: 28px;
    display: grid;
    gap: 12px;
    position: relative;
}

.case-year {
    font-size: 0.85rem;
    letter-spacing: 0.26em;
    color: var(--secondary);
    text-transform: uppercase;
}

.case-card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.3rem;
    color: var(--text-strong);
}

.roadmap {
    background: rgba(5, 7, 18, 0.82);
    padding: 60px 0;
    border-block: 1px solid rgba(255, 255, 255, 0.05);
}

.roadmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.roadmap-item {
    background: rgba(16, 18, 44, 0.78);
    border-radius: var(--radius-md);
    border: 1px solid rgba(123, 108, 255, 0.26);
    padding: 28px;
    display: grid;
    gap: 12px;
}

.phase {
    font-size: 0.85rem;
    letter-spacing: 0.28em;
    color: var(--accent);
}

.download {
    position: relative;
}

.download::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, rgba(123, 108, 255, 0.12), transparent 70%),
        radial-gradient(circle at 80% 70%, rgba(40, 241, 255, 0.08), transparent 75%);
    opacity: 0.8;
    z-index: -2;
}

.download-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
    gap: clamp(32px, 5vw, 64px);
    align-items: stretch;
}

.download-copy {
    display: grid;
    gap: 24px;
    align-content: start;
}

.download-highlights {
    display: grid;
    gap: 16px;
    padding: 0;
    margin: 0;
    list-style: none;
}

.download-highlights li {
    background: rgba(12, 16, 40, 0.78);
    border: 1px solid rgba(123, 108, 255, 0.22);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    font-size: 0.95rem;
    color: var(--text-base);
    line-height: 1.6;
}

.download-highlights strong {
    color: var(--text-strong);
    font-family: 'Orbitron', sans-serif;
    letter-spacing: 0.06em;
    margin-right: 4px;
}

.download-actions {
    background: rgba(9, 12, 34, 0.9);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(123, 108, 255, 0.28);
    padding: clamp(24px, 4vw, 32px);
    display: grid;
    gap: 20px;
    position: relative;
    overflow: hidden;
}

.download-mobile .btn,
.desktop-buttons .btn {
    width: 100%;
}

.download-mobile,
.download-desktop {
    display: grid;
    gap: 16px;
}

.download-desktop {
    display: none;
}

.desktop-buttons {
    display: grid;
    gap: 14px;
}

.desktop-buttons .btn.is-active {
    box-shadow: 0 12px 32px rgba(123, 108, 255, 0.25);
    transform: translateY(-2px);
}

.download-direct {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.desktop-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 16px;
}

.desktop-buttons .btn {
    transition: all 0.3s ease;
    opacity: 0.8;
}

.desktop-buttons .btn.is-active {
    opacity: 1;
    background: var(--primary);
    color: var(--text-strong);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(123, 108, 255, 0.3);
}

.desktop-buttons .btn:hover {
    opacity: 1;
    transform: translateY(-1px);
}

/* 交互效果样式 */
.ripple-effect {
    position: fixed;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(123, 108, 255, 0.4), transparent 70%);
    pointer-events: none;
    transform: translate(-50%, -50%) scale(0);
    animation: ripple 1s ease-out forwards;
    z-index: 1000;
}

@keyframes ripple {
    to {
        transform: translate(-50%, -50%) scale(20);
        opacity: 0;
    }
}

/* 改进卡片交互 */
.feature-card,
.info-block,
.license-card,
.app-panel {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.feature-card:hover,
.info-block:hover,
.license-card:hover,
.app-panel:hover {
    box-shadow: 0 16px 40px rgba(123, 108, 255, 0.2);
}

/* 按钮增强效果 */
.btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(123, 108, 255, 0.3);
}

/* 导航链接效果 */
.nav-link {
    position: relative;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

/* 统计数字动效 */
.stat {
    transition: all 0.3s ease;
}

.stat:hover {
    transform: translateY(-4px);
    background: rgba(16, 18, 44, 0.8);
}

/* 表单增强 */
.contact-form input,
.contact-form select,
.contact-form textarea {
    transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(123, 108, 255, 0.15);
}

.download-tip {
    font-size: 0.85rem;
    color: var(--text-dim);
    line-height: 1.6;
}

.download-qr {
    display: grid;
    gap: 16px;
    justify-items: center;
    background: rgba(12, 14, 36, 0.86);
    border: 1px dashed rgba(123, 108, 255, 0.32);
    border-radius: var(--radius-md);
    padding: 24px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.35s ease, transform 0.35s ease;
    position: relative;
    overflow: hidden;
}

.download-qr::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(40, 241, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.download-qr.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.download-qr canvas {
    width: 160px;
    height: 160px;
    border-radius: var(--radius-sm);
    border: 2px solid rgba(123, 108, 255, 0.4);
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.download-qr canvas:hover {
    border-color: var(--primary);
    box-shadow: 0 6px 20px rgba(123, 108, 255, 0.25);
    transform: scale(1.02);
}

.download-qr img {
    width: 160px;
    height: 160px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(123, 108, 255, 0.3);
}

.download-qr-tip {
    font-size: 0.85rem;
    color: var(--text-base);
    text-align: center;
    line-height: 1.6;
}

.btn.is-emphasis {
    box-shadow: 0 18px 42px rgba(123, 108, 255, 0.35);
}

body.is-mobile .download-mobile {
    display: grid;
}

body.is-mobile .download-desktop {
    display: none;
}

body.is-desktop .download-mobile {
    display: none;
}

body.is-desktop .download-desktop {
    display: grid;
}

/* ==== 临时样式：待开放状态 ==== */
.download-coming-soon {
    background: rgba(9, 12, 34, 0.9);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(123, 108, 255, 0.28);
    padding: clamp(32px, 6vw, 48px);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.download-coming-soon::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(123, 108, 255, 0.1) 0%, rgba(40, 241, 255, 0.05) 100%);
    pointer-events: none;
}

.coming-soon-content {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 24px;
    max-width: 480px;
    margin: 0 auto;
}

.coming-soon-icon {
    font-size: 3rem;
    margin-bottom: 8px;
}

.coming-soon-content h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    color: var(--text-strong);
    margin: 0;
}

.coming-soon-content p {
    font-size: 1.1rem;
    color: var(--text-base);
    line-height: 1.6;
    margin: 0;
}

.coming-soon-features {
    display: grid;
    gap: 16px;
    margin: 8px 0;
}

.feature-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(123, 108, 255, 0.08);
    border: 1px solid rgba(123, 108, 255, 0.2);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    color: var(--text-base);
    transition: all 0.3s ease;
}

.feature-preview:hover {
    background: rgba(123, 108, 255, 0.15);
    border-color: rgba(123, 108, 255, 0.4);
    transform: translateY(-2px);
}

.preview-icon {
    font-size: 1.2rem;
}

.notify-actions {
    display: grid;
    gap: 12px;
    margin-top: 8px;
}

.notify-tip {
    font-size: 0.85rem;
    color: var(--text-dim);
    font-style: italic;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .download-coming-soon {
        padding: clamp(24px, 5vw, 32px);
    }

    .coming-soon-content h3 {
        font-size: 1.5rem;
    }

    .coming-soon-content p {
        font-size: 1rem;
    }

    .feature-preview {
        padding: 14px 16px;
        font-size: 0.9rem;
    }
}

.cta {
    position: relative;
}

.cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(123, 108, 255, 0.08), rgba(40, 241, 255, 0.08));
    filter: blur(40px);
    opacity: 0.5;
    z-index: -3;
}

.cta-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    background: rgba(9, 12, 34, 0.9);
    border-radius: var(--radius-lg);
    padding: 40px;
    border: 1px solid rgba(123, 108, 255, 0.3);
}

.cta-text h2 {
    font-family: 'Orbitron', sans-serif;
    color: var(--text-strong);
    margin-bottom: 8px;
}

.cta-text p {
    color: var(--text-base);
}

.faq-list {
    display: grid;
    gap: 18px;
}

.faq details {
    background: rgba(16, 18, 44, 0.78);
    border-radius: var(--radius-md);
    border: 1px solid rgba(123, 108, 255, 0.25);
    padding: 20px 24px;
}

summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text-strong);
    font-size: 1rem;
    list-style: none;
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: "+";
    float: right;
    font-weight: 400;
    color: var(--secondary);
    transition: transform 0.25s ease;
}

details[open] summary::after {
    transform: rotate(45deg);
}

details p {
    margin-top: 14px;
    color: var(--text-base);
    line-height: 1.6;
}

.contact-box {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    background: rgba(9, 12, 34, 0.92);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(123, 108, 255, 0.3);
    padding: 40px;
    box-shadow: var(--shadow);
}

.contact-intro {
    display: grid;
    gap: 18px;
}

.contact-meta {
    display: grid;
    gap: 16px;
    font-size: 0.9rem;
    color: var(--text-base);
}

.contact-meta .label {
    display: block;
    color: var(--text-dim);
    margin-bottom: 4px;
}

.contact-form {
    display: grid;
    gap: 20px;
}

label {
    display: grid;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-dim);
}

input,
select,
textarea {
    background: rgba(12, 14, 36, 0.92);
    border: 1px solid rgba(123, 108, 255, 0.22);
    border-radius: 14px;
    padding: 12px 16px;
    color: var(--text-base);
    transition: border 0.25s ease, box-shadow 0.25s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: rgba(40, 241, 255, 0.5);
    box-shadow: 0 0 0 3px rgba(40, 241, 255, 0.16);
}

select {
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--secondary) 50%),
        linear-gradient(135deg, var(--secondary) 50%, transparent 50%),
        linear-gradient(to right, transparent, transparent);
    background-position: calc(100% - 18px) calc(1.1em), calc(100% - 13px) calc(1.1em), 100% 0;
    background-size: 6px 6px, 6px 6px, 2.5em 2.5em;
    background-repeat: no-repeat;
    padding-right: 40px;
}

textarea {
    resize: vertical;
}

.btn.full {
    width: 100%;
}

.form-tip {
    font-size: 0.75rem;
    color: var(--text-dim);
    text-align: center;
}

.site-footer {
    background: rgba(3, 4, 16, 0.92);
    padding: 60px 0 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand {
    display: grid;
    gap: 16px;
}

.footer-brand .brand-logo {
    width: 56px;
    height: 56px;
    font-size: 1.8rem;
}

.footer-links {
    display: flex;
    gap: 40px;
}

.footer-links h4,
.footer-extra h4 {
    font-family: 'Orbitron', sans-serif;
    color: var(--text-strong);
    margin-bottom: 12px;
}

.footer-links a {
    display: block;
    font-size: 0.9rem;
    color: var(--text-dim);
    margin-top: 10px;
}

.footer-links a:hover,
.socials a:hover {
    color: var(--secondary);
}

.footer-extra {
    display: grid;
    gap: 16px;
}

.socials {
    display: flex;
    gap: 18px;
    font-size: 0.9rem;
    color: var(--text-base);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-dim);
}

.footer-bottom a {
    color: var(--text-base);
}

.overview {
    padding-top: clamp(50px, 6vw, 80px);
    padding-bottom: clamp(50px, 6vw, 80px);
}

.overview .section-heading {
    margin: 0 auto clamp(28px, 5vw, 48px);
    max-width: 700px;
}

/* New Overview Section Styles */
.overview-hero {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-top: 60px;
    padding: 40px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.overview-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.overview-badge {
    display: inline-block;
    width: fit-content;
    padding: 8px 16px;
    background: var(--primary-soft);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(123, 108, 255, 0.3);
}

.overview-content h3 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-strong);
    margin: 0;
    line-height: 1.3;
}

.overview-content p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-base);
    margin: 0;
}

.overview-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 24px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(40, 241, 255, 0.1);
    border: 1px solid rgba(40, 241, 255, 0.25);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.highlight-item:hover {
    background: rgba(40, 241, 255, 0.15);
    transform: translateY(-2px);
}

.highlight-icon {
    font-size: 1.2rem;
}

.highlight-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--secondary);
}

.overview-stats {
    display: flex;
    flex-direction: column;
    gap: 32px;
    justify-content: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
    background: rgba(123, 108, 255, 0.08);
    border-radius: var(--radius-md);
    border: 1px solid rgba(123, 108, 255, 0.2);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary);
    font-family: 'Orbitron', sans-serif;
    margin-bottom: 8px;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-dim);
    font-weight: 500;
}

.overview-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 60px;
}

.feature-item {
    padding: 32px 28px;
    background: var(--surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(123, 108, 255, 0.15);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: block;
}

.feature-item h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-strong);
    margin: 0 0 16px 0;
}

.feature-item p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-base);
    margin: 0;
}

@media (max-width: 1024px) and (min-width: 769px) {
    .overview-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }
}

@media (max-width: 768px) {
    .overview-hero {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 32px 24px;
    }

    .overview-stats {
        flex-direction: row;
        gap: 16px;
    }

    .stat-item {
        flex: 1;
        padding: 16px 12px;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }

    .overview-features {
        grid-template-columns: 1fr;
        gap: 24px;
        margin-top: 40px;
    }

    .overview-highlights {
        flex-direction: column;
        gap: 12px;
    }

    .feature-item {
        padding: 24px 20px;
    }

    .overview-content h3 {
        font-size: 1.6rem;
    }
}

.overview-intro {
    display: grid;
    gap: 20px;
    font-size: 1rem;
    color: var(--text-base);
    background: rgba(12, 16, 40, 0.6);
    border: 1px solid rgba(123, 108, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: clamp(24px, 4vw, 32px);
    position: relative;
    overflow: hidden;
}

.overview-intro::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(123, 108, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.overview-intro h3 {
    font-family: 'Orbitron', sans-serif;
    color: var(--text-strong);
}

.overview-highlights {
    display: grid;
    gap: 20px;
    align-items: stretch;
}

.info-block {
    background: rgba(16, 18, 44, 0.78);
    border-radius: var(--radius-md);
    border: 1px solid rgba(123, 108, 255, 0.22);
    padding: clamp(18px, 3vw, 24px);
    display: grid;
    gap: 14px;
    align-content: start;
    height: 100%;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.info-block:hover {
    border-color: rgba(123, 108, 255, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(123, 108, 255, 0.12);
}

.info-block::after {
    content: "";
    position: absolute;
    inset: auto auto -40px -20px;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(40, 241, 255, 0.15), transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.info-block:hover::after {
    opacity: 1;
}

.info-block h4 {
    font-family: 'Orbitron', sans-serif;
    color: var(--text-strong);
    font-size: 1.1rem;
}

.info-block ul {
    display: grid;
    gap: 8px;
    padding-left: 18px;
    list-style: disc;
    color: var(--text-base);
}

.license-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.license-card {
    position: relative;
    background: rgba(12, 14, 36, 0.82);
    border: 1px solid rgba(40, 241, 255, 0.24);
    border-radius: var(--radius-md);
    padding: 26px 24px 24px 26px;
    display: grid;
    gap: 12px;
    min-height: 180px;
}

.license-card h3 {
    font-family: 'Orbitron', sans-serif;
    color: var(--text-strong);
    font-size: 1.2rem;
}

.license-card p {
    font-size: 0.92rem;
    color: var(--text-base);
    line-height: 1.55;
}

.license-badge {
    position: absolute;
    top: 20px;
    right: 24px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    color: var(--secondary);
    opacity: 0.7;
}

.security-grid .phase {
    letter-spacing: 0.18em;
}

@media (max-width: 720px) {
    .license-badge {
        right: 18px;
    }
}

@media (max-width: 540px) {
    .overview-grid {
        gap: 28px;
    }

    .license-grid {
        grid-template-columns: 1fr;
    }

    /* Ultra-small screens optimization */
    .container {
        padding: 0 clamp(12px, 3vw, 20px);
    }

    .hero h1 {
        font-size: clamp(1.5rem, 7vw, 2rem);
    }

    .brand-block {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .brand-meta {
        display: grid;
        gap: 4px;
    }

    .brand-tagline {
        font-size: 0.75rem;
    }

    .nav {
        display: none;
    }

    .nav-link {
        font-size: 0.8rem;
        padding: 6px 4px;
    }
}

/* Enhanced Mobile H5 Optimization */
@media (max-width: 768px) {
    /* Fix background continuity on mobile */
    body {
        background-attachment: scroll;
    }

    /* Improve touch targets */
    .btn {
        min-height: 44px;
        padding: 12px 20px;
        font-size: 1rem;
    }

    /* Better mobile typography */
    .hero h1 {
        font-size: clamp(1.8rem, 8vw, 2.4rem);
        line-height: 1.2;
    }

    .section-heading h2 {
        font-size: clamp(1.6rem, 6vw, 2rem);
    }

    /* Mobile-first spacing */
    section {
        padding: clamp(40px, 8vw, 60px) 0;
    }

    .hero {
        padding: clamp(60px, 12vw, 100px) 0 clamp(40px, 8vw, 60px);
    }

    /* Mobile navigation */
    .site-header > .container {
        padding: 12px clamp(16px, 4vw, 24px);
    }

    .nav {
        display: none;
    }

    .nav-link {
        font-size: 0.85rem;
        padding: 8px 6px;
        text-align: center;
    }

    /* Mobile hero adjustments */
    .hero-grid {
        gap: 32px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 24px;
    }

    .stat {
        text-align: center;
        padding: 16px;
        background: rgba(16, 18, 44, 0.6);
        border-radius: var(--radius-md);
        border: 1px solid rgba(123, 108, 255, 0.2);
    }

    /* Mobile cards optimization */
    .feature-grid,
    .app-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card,
    .app-panel {
        padding: clamp(20px, 5vw, 28px);
    }

    /* Mobile contact form */
    .contact-box {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: clamp(24px, 6vw, 32px);
    }

    /* Mobile download section */
    .download-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .download-mobile .btn {
        margin-bottom: 8px;
    }

    /* Sticky mobile CTA */
    .cta {
        position: sticky;
        bottom: 0;
        z-index: 50;
        margin: 0;
        padding: 16px 0;
        background: rgba(5, 6, 18, 0.95);
        backdrop-filter: blur(12px);
        border-top: 1px solid rgba(123, 108, 255, 0.2);
    }

    .cta-content {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .cta h2 {
        font-size: 1.2rem;
        margin: 0;
    }

    .cta p {
        font-size: 0.85rem;
        margin: 0;
    }
}

/* Responsive adjustments */
@media (max-width: 960px) {
    .site-header > .container {
        flex-direction: column;
        gap: 16px;
        padding: 16px 0 22px;
    }

    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    section {
        padding: 80px 0;
    }

    main {
        gap: 0;
        padding-bottom: 100px;
    }

    .cta-content {
        flex-direction: column;
        text-align: center;
    }

    .hero {
        padding-top: 120px;
        padding-bottom: 110px;
    }

    .hero-content {
        gap: 32px;
    }

    .app-grid {
        gap: 28px;
    }

    .tech-grid {
        gap: 32px;
    }

    .section-heading {
        margin-bottom: 44px;
    }

    .download-grid {
        grid-template-columns: 1fr;
    }

    .download-actions {
        max-width: 520px;
        margin: 0 auto;
    }
}

@media (max-width: 720px) {
    .hero-stats {
        flex-wrap: wrap;
    }

    section {
        padding: 64px 0;
    }

    main {
        padding-bottom: 80px;
    }

    .cta-content {
        padding: 32px;
    }

    .contact-box {
        padding: 30px;
    }

    .section-heading {
        margin-bottom: 36px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
    }

    .download-actions {
        padding: 26px;
        gap: 18px;
    }

    .download-highlights li {
        padding: 16px 18px;
    }

    .download-direct {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 12px;
    }
}

@media (max-width: 540px) {
    .nav {
        display: none;
    }

    section {
        padding: 56px 0;
    }

    .hero-text h1 {
        font-size: 2.2rem;
    }

    .btn {
        width: 100%;
    }

    .hero-actions {
        width: 100%;
    }

    .hero {
        padding-top: 110px;
        padding-bottom: 80px;
    }

    .cta-content {
        padding: 26px;
    }

    .section-heading {
        margin-bottom: 32px;
    }

    main {
        padding-bottom: 60px;
    }

    .download-qr img {
        width: 140px;
        height: 140px;
    }

    .download-qr-tip {
        font-size: 0.8rem;
    }

    .desktop-buttons {
        gap: 12px;
    }

    .download-direct {
        grid-template-columns: 1fr;
    }
}