:root {
    --bg: #0b0f19;
    --bg-elev: #121826;
    --text: #e5e7eb;
    --text-dim: #9aa4b2;
    --brand: #7c3aed;
    --brand-600: #6d28d9;
    --brand-700: #5b21b6;
    --brand-300: #a78bfa;
    --brand-200: #c4b5fd;
    --card: #0f172a;
    --line: rgba(255, 255, 255, .08);
    --ok: #22c55e;
    --warn: #f59e0b;
    --danger: #ef4444;
    --shadow: 0 10px 25px rgba(17, 24, 39, .45), 0 2px 8px rgba(0, 0, 0, .4)
}

* {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
    background: linear-gradient(180deg, #0b0f19, #111827 40%, #0b0f19);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    min-height: 100vh
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 20px
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(11, 15, 25, .6);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
    animation: slideDown 0.5s ease-out
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px
}

.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
    letter-spacing: .3px;
    transition: transform 0.3s ease
}

.brand:hover {
    transform: scale(1.05)
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--brand), var(--brand-700));
    box-shadow: var(--shadow)
}


/* 品牌图片 Logo */

.brand-logo {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    display: block;
    object-fit: cover;
    box-shadow: var(--shadow);
    animation: float 3s ease-in-out infinite;
    transition: transform 0.3s ease
}

.brand-logo:hover {
    transform: scale(1.1) rotate(5deg)
}

.brand-name {
    font-size: 16px
}

.nav-links {
    display: flex;
    gap: 18px
}

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    padding: 10px 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--brand-600);
    transition: all 0.3s ease;
    transform: translateX(-50%)
}

.nav-links a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, .06)
}

.nav-links a:hover::after {
    width: 80%
}

.nav-toggle {
    display: none;
    background: none;
    border: 0;
    color: var(--text);
    font-size: 22px
}

.hero {
    position: relative;
    padding: 72px 0 40px;
    overflow: hidden
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(124, 58, 237, .25), transparent 70%);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
    pointer-events: none
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(124, 58, 237, .15), transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite reverse;
    pointer-events: none
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 32px;
    align-items: center
}

.hero-badge {
    display: inline-block;
    padding: 6px 14px;
    background: linear-gradient(135deg, rgba(124, 58, 237, .2), rgba(96, 165, 250, .2));
    border: 1px solid rgba(124, 58, 237, .3);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    color: #a78bfa;
    margin-bottom: 16px;
    animation: fadeInUp 0.8s ease-out
}

.hero-copy h1 {
    font-size: 52px;
    line-height: 1.2;
    margin: 0 0 20px;
    font-weight: 800;
    color: var(--text);
    animation: fadeInUp 0.8s ease-out 0.1s backwards
}

.gradient {
    background: linear-gradient(90deg, #60a5fa, #a78bfa, #22d3ee);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradientShift 3s ease infinite;
    background-size: 200% 200%
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%
    }
    50% {
        background-position: 100% 50%
    }
}

.hero-description {
    color: var(--text-dim);
    font-size: 18px;
    line-height: 1.7;
    max-width: 540px;
    margin: 0 0 28px;
    animation: fadeInUp 0.8s ease-out 0.2s backwards
}

.hero-features {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.3s backwards
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid var(--line);
    border-radius: 12px;
    color: var(--text-dim);
    font-size: 14px;
    transition: all 0.3s ease
}

.hero-feature-item i {
    width: 18px;
    height: 18px;
    stroke: #a78bfa
}

.hero-feature-item:hover {
    background: rgba(124, 58, 237, .1);
    border-color: rgba(124, 58, 237, .3);
    transform: translateY(-2px)
}

.cta-group {
    display: flex;
    gap: 12px;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease-out 0.4s backwards
}

.cta-group .btn {
    gap: 8px
}

.cta-group .btn i {
    width: 18px;
    height: 18px
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 18px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    letter-spacing: .2px
}

.btn-primary {
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    color: #fff;
    box-shadow: 0 8px 24px rgba(124, 58, 237, .3), 0 2px 8px rgba(0, 0, 0, .2);
    transition: all 0.3s ease;
    animation: pulse 2s ease-in-out infinite
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(124, 58, 237, .4), 0 4px 12px rgba(0, 0, 0, .3);
    background: linear-gradient(135deg, #8b5cf6, #b794f6)
}

.btn-primary i {
    stroke: #fff
}

.btn-ghost {
    border: 1px solid var(--line);
    color: var(--text);
    background: rgba(255, 255, 255, .06);
    transition: all 0.3s ease
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, .12);
    border-color: rgba(124, 58, 237, .3);
    transform: translateY(-2px)
}

.btn-ghost i {
    stroke: currentColor
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 0;
    padding: 24px 0;
    margin: 0;
    animation: fadeInUp 0.8s ease-out 0.5s backwards
}

.stat-item {
    flex: 1;
    text-align: center;
    padding: 0 20px
}

.stat-value {
    font-size: 32px;
    font-weight: 800;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 4px;
    line-height: 1.2
}

.stat-label {
    font-size: 13px;
    color: var(--text-dim);
    font-weight: 500
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--line);
    opacity: .5
}

.hero-visual {
    display: flex;
    justify-content: center;
    position: relative
}

.device-frame {
    width: 100%;
    max-width: 420px;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, #1a1f2e, #0f1419);
    border-radius: 28px;
    padding: 0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .5), 0 0 0 1px rgba(255, 255, 255, .05);
    animation: fadeInRight 0.8s ease-out, float 4s ease-in-out infinite;
    animation-delay: 0.2s, 1s;
    overflow: hidden
}

.device-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: rgba(255, 255, 255, .03);
    border-bottom: 1px solid var(--line)
}

.device-status {
    display: flex;
    gap: 6px
}

.device-status .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #fff, transparent 60%), #7c3aed;
    opacity: .8;
    animation: pulse 2s ease-in-out infinite
}

.device-status .dot:nth-child(1) {
    animation-delay: 0s
}

.device-status .dot:nth-child(2) {
    animation-delay: 0.3s
}

.device-status .dot:nth-child(3) {
    animation-delay: 0.6s
}

.device-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    flex: 1;
    text-align: center
}

.device-actions {
    display: flex;
    gap: 12px;
    color: var(--text-dim)
}

.device-actions i {
    width: 18px;
    height: 18px;
    cursor: pointer;
    transition: color 0.3s ease
}

.device-actions i:hover {
    color: var(--text)
}

.chat-container {
    padding: 20px 16px;
    min-height: 320px;
    max-height: 400px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: linear-gradient(180deg, #0f1419, #1a1f2e);
    scrollbar-width: none;
    -ms-overflow-style: none
}

.chat-container::-webkit-scrollbar {
    display: none
}

.chat-message {
    display: flex;
    gap: 10px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.4s ease-out
}

.chat-message:nth-child(1) {
    animation-delay: 0.3s
}

.chat-message:nth-child(2) {
    animation-delay: 0.5s
}

.chat-message:nth-child(3) {
    animation-delay: 0.7s
}

.chat-message:nth-child(4) {
    animation-delay: 0.9s
}

.message-left {
    align-items: flex-start;
    justify-content: flex-start
}

.message-right {
    align-items: flex-end;
    justify-content: flex-end;
    margin-left: auto
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0
}

.message-content {
    max-width: 70%;
    display: flex;
    flex-direction: column;
    gap: 4px
}

.message-right .message-content {
    align-items: flex-end
}

.message-name {
    font-size: 12px;
    color: var(--text-dim);
    padding: 0 12px;
    margin-bottom: 4px
}

.message-right .message-name {
    text-align: right
}

.message-bubble {
    padding: 10px 14px;
    border-radius: 18px;
    position: relative;
    word-wrap: break-word
}

.bubble-left {
    background: rgba(255, 255, 255, .08);
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, .1);
    border-top-left-radius: 4px
}

.bubble-right {
    background: linear-gradient(135deg, #7c3aed, #a78bfa);
    color: #fff;
    border-top-right-radius: 4px;
    margin-left: auto
}

.message-text {
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 4px
}

.message-time {
    font-size: 11px;
    opacity: .6;
    margin-top: 4px
}

.message-status {
    display: flex;
    gap: 2px;
    margin-top: 4px
}

.message-status i {
    width: 12px;
    height: 12px;
    opacity: .7
}

.device-input {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, .03);
    border-top: 1px solid var(--line)
}

.device-input i {
    width: 20px;
    height: 20px;
    color: var(--text-dim);
    cursor: pointer;
    transition: color 0.3s ease
}

.device-input i:hover {
    color: #a78bfa
}

.device-input input {
    flex: 1;
    background: rgba(255, 255, 255, .05);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 10px 16px;
    color: var(--text);
    font-size: 14px;
    outline: none
}

.device-input input::placeholder {
    color: var(--text-dim)
}

.hero-glow {
    position: absolute;
    inset: auto 0 -120px;
    pointer-events: none;
    height: 280px;
    background: radial-gradient(60% 60% at 50% 0, var(--brand-600), transparent 60%);
    filter: blur(40px);
    opacity: .4;
    animation: glowPulse 3s ease-in-out infinite
}

main {
    flex: 1;
    display: flex;
    flex-direction: column
}

.section {
    padding: 64px 0;
    flex: 1
}

.section.alt {
    background: linear-gradient(180deg, #121826, #0b0f19)
}

.section-title {
    text-align: center;
    font-size: 28px;
    margin: 0 0 22px;
    animation: fadeInUp 0.8s ease-out
}

.grid {
    display: grid;
    gap: 16px
}

.features-grid {
    grid-template-columns: repeat(4, 1fr)
}

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 1px 0 rgba(0, 0, 0, .02) inset;
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out backwards
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(237, 242, 254, .4), 0 4px 12px rgba(0, 0, 0, .08)
}

.feature:nth-child(1) {
    animation-delay: 0.1s
}

.feature:nth-child(2) {
    animation-delay: 0.2s
}

.feature:nth-child(3) {
    animation-delay: 0.3s
}

.feature:nth-child(4) {
    animation-delay: 0.4s
}

.feature .icon {
    font-size: 22px;
    margin-bottom: 8px;
    display: inline-block;
    animation: bounce 2s ease-in-out infinite;
    transition: transform 0.3s ease;
    color: #4a90e2
}

.feature .icon svg {
    width: 24px;
    height: 24px;
    stroke-width: 2;
    stroke: currentColor;
    fill: none
}

.feature:hover .icon {
    transform: scale(1.2) rotate(10deg)
}

/* 优势模块 */
.advantages-grid {
    grid-template-columns: repeat(4, 1fr)
}

.advantage-card {
    text-align: center
}

.advantage-icon {
    font-size: 48px;
    margin-bottom: 12px;
    display: block;
    animation: bounce 2s ease-in-out infinite;
    transition: transform 0.3s ease;
    color: #4a90e2
}

.advantage-icon svg {
    width: 48px;
    height: 48px;
    stroke-width: 1.5;
    stroke: currentColor;
    fill: none
}

.advantage-card:hover .advantage-icon {
    transform: scale(1.2) rotate(10deg)
}

/* 场景模块 */
.scenarios-grid {
    grid-template-columns: repeat(3, 1fr)
}

.scenario-card {
    display: flex;
    flex-direction: column
}

.scenario-icon {
    font-size: 40px;
    margin-bottom: 12px;
    display: block;
    animation: float 3s ease-in-out infinite;
    transition: transform 0.3s ease;
    color: #4a90e2
}

.scenario-icon svg {
    width: 40px;
    height: 40px;
    stroke-width: 1.5;
    stroke: currentColor;
    fill: none
}

.scenario-card:hover .scenario-icon {
    transform: scale(1.15) rotate(-5deg)
}

.scenario-features {
    list-style: none;
    padding: 0;
    margin: 16px 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px
}

.scenario-features li {
    padding: 6px 12px;
    background: rgba(237, 242, 254, .4);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text);
    border: 1px solid var(--line);
    transition: all 0.3s ease
}

.scenario-card:hover .scenario-features li {
    background: rgba(237, 242, 254, .6);
    transform: translateY(-2px)
}

/* 技术优势模块 */
.tech-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px
}

.tech-item {
    text-align: center;
    padding: 24px;
    background: rgba(237, 242, 254, .2);
    border-radius: 16px;
    border: 1px solid var(--line);
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out backwards
}

.tech-item:nth-child(1) {
    animation-delay: 0.1s
}

.tech-item:nth-child(2) {
    animation-delay: 0.2s
}

.tech-item:nth-child(3) {
    animation-delay: 0.3s
}

.tech-item:nth-child(4) {
    animation-delay: 0.4s
}

.tech-item:hover {
    transform: translateY(-8px);
    background: rgba(237, 242, 254, .4);
    box-shadow: 0 12px 30px rgba(237, 242, 254, .3)
}

.tech-number {
    font-size: 36px;
    font-weight: 700;
    color: #4a90e2;
    margin-bottom: 8px;
    line-height: 1.2;
    background: linear-gradient(90deg, #4a90e2, #6ba3e8);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent
}

.tech-label {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px
}

.tech-item p {
    font-size: 14px;
    color: var(--text-dim);
    margin: 0;
    line-height: 1.5
}

.showcase-grid {
    grid-template-columns: repeat(3, 1fr)
}

.screenshot-card {
    height: 200px;
    border-radius: 16px;
    border: 1px dashed var(--brand-600);
    background: repeating-linear-gradient(45deg, rgba(237, 242, 254, .3) 0 10px, rgba(237, 242, 254, .5) 10px 20px);
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out backwards;
    cursor: pointer
}

.screenshot-card:nth-child(1) {
    animation-delay: 0.1s
}

.screenshot-card:nth-child(2) {
    animation-delay: 0.2s
}

.screenshot-card:nth-child(3) {
    animation-delay: 0.3s
}

.screenshot-card:hover {
    transform: scale(1.05);
    border-color: var(--brand-700);
    box-shadow: 0 8px 20px rgba(237, 242, 254, .3)
}

.faq details {
    background: rgba(237, 242, 254, .2);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px 14px;
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out backwards
}

.faq details[open] {
    background: rgba(237, 242, 254, .4);
    box-shadow: 0 4px 12px rgba(237, 242, 254, .2)
}

.faq details:nth-child(1) {
    animation-delay: 0.1s
}

.faq details:nth-child(2) {
    animation-delay: 0.2s
}

.faq details:nth-child(3) {
    animation-delay: 0.3s
}

.faq details+details {
    margin-top: 12px
}

.faq summary {
    cursor: pointer;
    color: var(--text);
    font-weight: 600
}

.faq p {
    color: var(--text-dim);
    margin: 10px 0 0
}

.site-footer {
    border-top: 1px solid var(--line);
    background: rgba(11, 15, 25, .6);
    animation: fadeInUp 0.6s ease-out
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 12px;
    align-items: center;
    min-height: 72px
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px
}

.footer-links {
    display: flex;
    gap: 14px
}

.footer-links a {
    color: var(--text-dim);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--brand-600);
    transition: width 0.3s ease
}

.footer-links a:hover {
    color: var(--text)
}

.footer-links a:hover::after {
    width: 100%
}

.footer-copy {
    color: var(--text-dim);
    font-size: 13px
}


/* 下载页 */

.downloads {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
    max-width: 1200px;
    margin: 0 auto
}

.downloads > div:first-child h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #60a5fa, #a78bfa, #22d3ee);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradientShift 3s ease infinite;
    background-size: 200% 200%
}

.downloads > div:first-child p[data-platform-hint] {
    font-size: 15px;
    margin-bottom: 32px
}

.platforms {
    display: flex;
    flex-direction: column;
    gap: 0
}

.platform-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out backwards;
    display: flex;
    flex-direction: column;
    height: 100%
}

.platform-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(124, 58, 237, .2), 0 4px 16px rgba(0, 0, 0, .3);
    border-color: rgba(124, 58, 237, .3)
}

.platform-card h3 {
    margin: 0 0 12px;
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent
}

.platform-card p {
    margin: 0 0 24px;
    color: var(--text-dim);
    font-size: 15px;
    line-height: 1.6;
    flex: 1
}

.platform-card .btn {
    width: 100%;
    margin-top: auto
}

.qr-card {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    position: sticky;
    top: 96px;
    display: flex;
    flex-direction: column;
    align-items: center
}

.qr-wrap {
    width: 100%;
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #ff2d8d 0%, #7c3aed 100%);
    padding: 16px;
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(124, 58, 237, .25), 0 8px 20px rgba(0, 0, 0, .35);
    box-sizing: border-box
}

.qr-inner {
    width: 100%;
    aspect-ratio: 1;
    background: #fff;
    border-radius: 20px;
    padding: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .25);
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box
}

.qr {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 12px;
    background: #fff;
    display: grid;
    place-items: center;
    position: relative;
    animation: fadeInUp 0.8s ease-out;
    animation-delay: 0.2s;
    overflow: hidden;
    box-sizing: border-box
}

.qr img {
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain
}

.qr-caption {
    color: #fff;
    font-size: 14px;
    margin-top: 12px;
    text-align: center;
    opacity: .95;
    width: 100%;
    padding: 6px 12px;
    background: rgba(0, 0, 0, .3);
    border-radius: 20px;
    backdrop-filter: blur(8px)
}


/* 二维码图片样式 */

.qr img {
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
    display: block
}


/* 二维码 Loading */

.qr-loading {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    position: absolute;
    top: 0;
    left: 0;
    background: rgba(255, 255, 255, .95);
    border-radius: 12px;
    z-index: 10
}

.qr-loading-spinner {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 4px solid rgba(124, 58, 237, .2);
    border-top-color: #7c3aed;
    border-right-color: #a78bfa;
    animation: spin 1s linear infinite;
    position: relative
}

.qr-loading-spinner::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    margin: -12px 0 0 -12px;
    border-radius: 50%;
    border: 2px solid rgba(124, 58, 237, .1);
    border-top-color: #a78bfa;
    animation: spin 0.6s linear infinite reverse
}

.qr-loading-text {
    color: #1a1a2e;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    opacity: .8
}

.qr-loading.error {
    width: 100%;
    height: 100%;
    border: 0;
    background: rgba(255, 255, 255, .95);
    color: var(--danger);
    font-size: 14px;
    line-height: 1.6;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px
}

.qr-loading.error .qr-loading-text {
    color: var(--danger);
    opacity: 1
}

.qr-loading-link {
    color: var(--text-dim);
    font-size: 12px;
    text-decoration: none;
    opacity: .8
}

@keyframes spin {
    to {
        transform: rotate(360deg)
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px)
    }
    50% {
        transform: translateY(-10px)
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px)
    }
    to {
        opacity: 1;
        transform: translateY(0)
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px)
    }
    to {
        opacity: 1;
        transform: translateX(0)
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px)
    }
    to {
        opacity: 1;
        transform: translateX(0)
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px)
    }
    to {
        opacity: 1;
        transform: translateX(0)
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px)
    }
    to {
        opacity: 1;
        transform: translateY(0)
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1)
    }
    50% {
        opacity: .8;
        transform: scale(1.05)
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0)
    }
    50% {
        transform: translateY(-8px)
    }
}

@keyframes glowPulse {
    0%, 100% {
        opacity: .4
    }
    50% {
        opacity: .6
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg)
    }
    to {
        transform: rotate(360deg)
    }
}


/* 响应式 */

@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr
    }
    .downloads {
        grid-template-columns: 1fr;
        gap: 24px;
        max-width: 100%
    }
    .platform-card {
        padding: 24px
    }
    .qr-card {
        position: static;
        align-items: stretch
    }
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr)
    }
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr)
    }
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr)
    }
    .tech-grid {
        grid-template-columns: repeat(2, 1fr)
    }
    .showcase-grid {
        grid-template-columns: repeat(2, 1fr)
    }
    .platforms {
        grid-template-columns: repeat(2, 1fr)
    }
}

@media (max-width: 560px) {
    .nav-toggle {
        display: inline-flex
    }
    .nav-links {
        position: absolute;
        right: 20px;
        top: 64px;
        flex-direction: column;
        background: rgba(11, 15, 25, .98);
        padding: 10px;
        border: 1px solid var(--line);
        border-radius: 12px;
        display: none;
        box-shadow: 0 8px 20px rgba(0, 0, 0, .1)
    }
    .nav-links.open {
        display: flex
    }
    .hero {
        padding: 56px 0 28px
    }
    .hero-copy h1 {
        font-size: 32px
    }
    .hero-stats {
        gap: 12px
    }
    .features-grid {
        grid-template-columns: 1fr
    }
    .advantages-grid {
        grid-template-columns: 1fr
    }
    .scenarios-grid {
        grid-template-columns: 1fr
    }
    .tech-grid {
        grid-template-columns: 1fr
    }
    .showcase-grid {
        grid-template-columns: 1fr
    }
    .platforms {
        grid-template-columns: 1fr
    }
    .footer-inner {
        grid-template-columns: 1fr
    }
}