:root {
    --bg: #0b0f17;
    --card: rgba(19, 24, 34, 0.9);
    --line: #2d333b;
    --primary: #58a6ff;
    --primary-2: #1f6feb;
    --success: #3fb950;
    --warning: #d29922;
    --text: #c9d1d9;
    --muted: #8b949e;
    --shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: radial-gradient(circle at 20% 20%, rgba(31, 111, 235, 0.08), transparent 30%),
                radial-gradient(circle at 80% 10%, rgba(63, 185, 80, 0.08), transparent 25%),
                var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

/* 星空 + 浮动背景 */
.Bottom-Background {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem 3rem;
    background-color: rgba(11, 15, 23, 0.85);
    overflow: hidden;
    isolation: isolate;
}

.Bottom-Background::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(2px 2px at 20px 30px, #eee, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(88, 166, 255, 0.6), transparent),
        radial-gradient(1px 1px at 90px 40px, #fff, transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(56, 139, 253, 0.4), transparent),
        radial-gradient(2px 2px at 160px 30px, #fff, transparent),
        radial-gradient(1px 1px at 200px 120px, rgba(56, 139, 253, 0.5), transparent),
        radial-gradient(2px 2px at 250px 60px, #eee, transparent),
        radial-gradient(1px 1px at 300px 150px, rgba(56, 139, 253, 0.5), transparent),
        radial-gradient(2px 2px at 350px 90px, #fff, transparent),
        radial-gradient(1px 1px at 400px 40px, rgba(56, 139, 253, 0.4), transparent),
        radial-gradient(2px 2px at 450px 130px, #eee, transparent),
        radial-gradient(1px 1px at 500px 70px, rgba(56, 139, 253, 0.5), transparent);
    background-repeat: repeat;
    background-size: 550px 550px;
    animation: starsMove 120s linear infinite;
    z-index: -2;
}

.Bottom-Background::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(24, 32, 45, 0.8), rgba(13, 17, 23, 0.7));
    z-index: -1;
}

.floating-shape {
    position: absolute;
    width: 240px;
    height: 240px;
    filter: blur(80px);
    opacity: 0.5;
    z-index: -1;
    animation: float 18s ease-in-out infinite;
}

.shape-1 {
    background: rgba(88, 166, 255, 0.4);
    top: 10%;
    left: 10%;
}

.shape-2 {
    background: rgba(63, 185, 80, 0.3);
    top: 40%;
    right: 8%;
    animation-delay: -4s;
}

.shape-3 {
    background: rgba(210, 153, 34, 0.25);
    bottom: 5%;
    left: 35%;
    animation-delay: -8s;
}

@keyframes starsMove {
    from { transform: translateY(0); }
    to { transform: translateY(-550px); }
}

@keyframes float {
    0% { transform: translate3d(0, 0, 0); }
    50% { transform: translate3d(20px, -30px, 0); }
    100% { transform: translate3d(0, 0, 0); }
}

/* 顶部导航 */
.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: linear-gradient(120deg, rgba(33, 38, 45, 0.65), rgba(20, 25, 35, 0.8));
    box-shadow: var(--shadow);
    max-width: 1200px;
    margin: 0 auto 1.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.brand-mark {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-2), var(--primary));
    color: white;
    font-size: 0.9rem;
    font-weight: 800;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--muted);
}

.nav-links a {
    padding: 0.55rem 0.9rem;
    border-radius: 10px;
    transition: all 0.25s ease;
}

.nav-links a:hover {
    color: var(--text);
    background: rgba(88, 166, 255, 0.12);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.primary-btn,
.ghost-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.1rem;
    border-radius: 10px;
    font-weight: 600;
    border: 1px solid transparent;
    transition: all 0.25s ease;
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary-2), var(--primary));
    color: white;
    box-shadow: 0 12px 30px rgba(88, 166, 255, 0.25);
}

.primary-btn:hover {
    filter: brightness(1.05);
}

.ghost-btn {
    border-color: var(--line);
    color: var(--text);
    background: rgba(255, 255, 255, 0.02);
}

.ghost-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* 页面布局 */
.layout {
    width: min(1200px, 100%);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.25rem;
    align-items: stretch;
}

.hero-left {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.8rem;
    background: rgba(88, 166, 255, 0.12);
    color: var(--primary);
    border-radius: 999px;
    border: 1px solid rgba(88, 166, 255, 0.25);
    font-weight: 600;
    width: fit-content;
}

.Title1 {
    font-size: clamp(2rem, 4vw, 3.4rem);
    font-weight: 800;
    line-height: 1.1;
    background: linear-gradient(135deg, #89b4ff 0%, #58a6ff 45%, #1f6feb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(88, 166, 255, 0.35);
    letter-spacing: 1px;
}

.lead {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--muted);
    max-width: 640px;
}

.status-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.chip {
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text);
    font-weight: 600;
    font-size: 0.95rem;
}

.chip.online { border-color: rgba(63, 185, 80, 0.35); color: var(--success); }
.chip.shield { border-color: rgba(88, 166, 255, 0.35); color: var(--primary); }
.chip.speed { border-color: rgba(210, 153, 34, 0.35); color: var(--warning); }

.cta-group {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 0.25rem 0;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.9rem 1.4rem;
    border-radius: 12px;
    font-weight: 700;
    border: 1px solid var(--line);
    background: rgba(33, 38, 45, 0.7);
    color: var(--text);
    transition: all 0.25s ease;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
}

.button.primary {
    background: linear-gradient(135deg, var(--primary-2), var(--primary));
    border-color: transparent;
    color: white;
}

.button.ghost {
    background: rgba(255, 255, 255, 0.02);
}

.button:hover {
    transform: translateY(-2px);
    border-color: rgba(88, 166, 255, 0.3);
    color: var(--primary);
    box-shadow: 0 14px 30px rgba(88, 166, 255, 0.25);
}

.button.primary:hover { color: white; filter: brightness(1.06); }
.button.ghost:hover { color: var(--primary); }

.text-link {
    color: var(--primary);
    font-weight: 700;
}

.mini-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.metric {
    padding: 0.85rem 1rem;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.02);
    text-align: left;
}

.metric span {
    display: block;
    font-weight: 800;
    font-size: 1.1rem;
}

.metric small {
    color: var(--muted);
}

.hero-right {
    display: flex;
    align-items: stretch;
}

.glass-card {
    width: 100%;
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 18px;
    padding: 1.3rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
}

.hero-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--muted);
}

.badge {
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.85rem;
    border: 1px solid transparent;
}

.badge.success {
    background: rgba(63, 185, 80, 0.15);
    border-color: rgba(63, 185, 80, 0.4);
    color: var(--success);
}

.badge.subtle {
    background: rgba(88, 166, 255, 0.12);
    border-color: rgba(88, 166, 255, 0.2);
    color: var(--primary);
}

.muted {
    color: var(--muted);
}

.progress-block {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    color: var(--muted);
    font-size: 0.95rem;
}

.progress-bar {
    position: relative;
    height: 10px;
    border-radius: 999px;
    background: #161b22;
    overflow: hidden;
}

.progress-value {
    position: absolute;
    inset: 0;
    width: 90%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary-2), var(--primary), #72b7ff);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.2); }
}

.status-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.status-list li {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 0.8rem;
    padding: 0.75rem 0.85rem;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.02);
}

.status-list p {
    color: var(--muted);
    font-size: 0.9rem;
}

.status-list strong {
    font-size: 1.1rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    position: relative;
}

.dot::after {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    opacity: 0.35;
}

.dot.green { background: var(--success); }
.dot.green::after { background: rgba(63, 185, 80, 0.45); }
.dot.yellow { background: var(--warning); }
.dot.yellow::after { background: rgba(210, 153, 34, 0.45); }

.tag {
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    font-size: 0.85rem;
    border: 1px solid var(--line);
    color: var(--muted);
}

.tag.warning { color: var(--warning); border-color: rgba(210, 153, 34, 0.4); }
.tag.soft { border-color: rgba(88, 166, 255, 0.25); color: var(--primary); }

.pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.pill {
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.9rem;
}

.quick-actions {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

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

.stat-card {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 1.25rem 1.2rem;
    background: linear-gradient(135deg, rgba(33, 38, 45, 0.7), rgba(18, 23, 32, 0.85));
    box-shadow: var(--shadow);
}

.stat-card p {
    color: var(--muted);
    margin-bottom: 0.25rem;
}

.stat-card strong {
    display: block;
    font-size: 1.4rem;
    margin-bottom: 0.25rem;
}

.stat-card small {
    color: var(--muted);
}

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

.feature-card {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 1.2rem;
    background: rgba(255, 255, 255, 0.02);
    display: grid;
    gap: 0.5rem;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-3px);
    border-color: rgba(88, 166, 255, 0.35);
}

.icon-ring {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(88, 166, 255, 0.15);
    color: var(--primary);
    font-size: 1.1rem;
}

.feature-card h3 {
    font-size: 1.1rem;
}

.feature-card p {
    color: var(--muted);
    line-height: 1.6;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.trust-card {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 1.2rem;
    background: linear-gradient(120deg, rgba(33, 38, 45, 0.7), rgba(18, 23, 32, 0.9));
    display: grid;
    gap: 0.75rem;
    box-shadow: var(--shadow);
}

.trust-card p {
    color: var(--muted);
    line-height: 1.6;
}

.card-head {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.page-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1.1rem 1.2rem;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.02);
    box-shadow: var(--shadow);
}

.footer-actions {
    display: flex;
    gap: 0.6rem;
}

/* 登录页公用背景动画保持 */
.Title1,
.Bottom-Background p {
    animation: fadeInUp 0.8s ease-out;
}

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

/* 响应式 */
@media (max-width: 1024px) {
    .top-nav { flex-wrap: wrap; }
    .nav-links { width: 100%; justify-content: center; }
    .nav-actions { width: 100%; justify-content: flex-end; }
}

@media (max-width: 768px) {
    .Bottom-Background { padding: 1.5rem 1rem 2rem; }
    .top-nav { flex-direction: column; align-items: flex-start; }
    .nav-links, .nav-actions { width: 100%; justify-content: space-between; }
    .cta-group { flex-direction: column; align-items: flex-start; }
    .button { width: 100%; justify-content: center; }
    .page-footer { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .hero { grid-template-columns: 1fr; }
    .stat-row, .feature-grid, .trust-grid { grid-template-columns: 1fr; }
    .top-nav { padding: 0.75rem; }
}