Letters/css/notice-page.css

:root {
    --bg: #07111f;
    --panel: rgba(9, 20, 40, 0.78);
    --panel-strong: rgba(10, 24, 46, 0.94);
    --line: rgba(103, 213, 255, 0.22);
    --line-strong: rgba(103, 213, 255, 0.48);
    --text: #edf7ff;
    --muted: #96b2d1;
    --accent: #67d5ff;
    --accent-strong: #2de2a6;
    --warning: #ffcc66;
    --font-display: "Orbitron", "Segoe UI", sans-serif;
    --font-body: "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    color-scheme: dark;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    font-family: var(--font-body);
    background:
        linear-gradient(135deg, rgba(7, 17, 31, 0.96), rgba(10, 28, 54, 0.96)),
        repeating-linear-gradient(90deg, rgba(103, 213, 255, 0.055) 0 1px, transparent 1px 72px),
        repeating-linear-gradient(0deg, rgba(103, 213, 255, 0.045) 0 1px, transparent 1px 72px);
}

a {
    color: inherit;
}

.notice-page {
    width: min(calc(100% - 32px), 1120px);
    margin: 0 auto;
    padding: 28px 0 56px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 34px;
}

.brand,
.back-link,
.primary-action {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    border-radius: 999px;
    text-decoration: none;
}

.brand {
    gap: 10px;
    color: var(--text);
    font-weight: 700;
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--line-strong);
    border-radius: 12px;
    color: var(--accent);
    font-family: var(--font-display);
    background: rgba(103, 213, 255, 0.08);
}

.back-link {
    padding: 0 16px;
    border: 1px solid var(--line);
    color: var(--muted);
    background: rgba(255, 255, 255, 0.04);
}

.back-link:hover,
.primary-action:hover {
    border-color: var(--line-strong);
    color: var(--text);
}

.notice-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 22px;
    align-items: stretch;
    margin-bottom: 22px;
}

.hero-copy,
.status-panel,
.notice-card,
.side-card {
    border: 1px solid var(--line);
    background: var(--panel);
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.32);
    backdrop-filter: blur(18px);
}

.hero-copy {
    padding: clamp(28px, 5vw, 54px);
    border-radius: 24px;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--accent);
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 16px;
    font-size: clamp(34px, 6vw, 64px);
    line-height: 1.05;
}

.hero-copy p {
    max-width: 760px;
    margin-bottom: 0;
    color: var(--muted);
    font-size: 17px;
    line-height: 1.8;
}

.status-panel {
    display: flex;
    min-height: 240px;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px;
    border-radius: 24px;
}

.status-badge {
    width: max-content;
    padding: 7px 12px;
    border-radius: 999px;
    color: #06111f;
    background: var(--warning);
    font-size: 13px;
    font-weight: 800;
}

.status-code {
    color: var(--accent);
    font-family: var(--font-display);
    font-size: 44px;
    font-weight: 700;
}

.status-panel p {
    margin-bottom: 0;
    color: var(--muted);
}

.notice-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 22px;
    align-items: start;
}

.notice-card,
.side-card {
    border-radius: 20px;
}

.notice-card {
    padding: clamp(24px, 4vw, 40px);
}

.notice-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 22px;
}

.notice-meta span,
.info-label {
    color: var(--muted);
    font-size: 13px;
}

.notice-meta span {
    padding: 6px 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
}

.notice-card h2,
.side-card h2 {
    margin-bottom: 12px;
    font-size: 24px;
}

.notice-card p,
.side-card p {
    color: var(--muted);
    line-height: 1.8;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 30px;
}

.info-grid div {
    min-height: 92px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
}

.info-grid strong {
    display: block;
    margin-top: 8px;
    font-size: 16px;
}

.side-card {
    padding: 24px;
}

code {
    color: var(--accent);
    font-family: Consolas, "Courier New", monospace;
}

.primary-action {
    justify-content: center;
    width: 100%;
    margin-top: 14px;
    padding: 0 18px;
    border: 1px solid rgba(45, 226, 166, 0.5);
    color: #06111f;
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    font-weight: 800;
}

@media (max-width: 840px) {
    .notice-hero,
    .notice-layout {
        grid-template-columns: 1fr;
    }

    .status-panel {
        min-height: 180px;
    }

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

@media (max-width: 520px) {
    .notice-page {
        width: min(calc(100% - 20px), 1120px);
        padding-top: 16px;
    }

    .topbar {
        align-items: flex-start;
        flex-direction: column;
        margin-bottom: 22px;
    }

    .hero-copy,
    .status-panel,
    .notice-card,
    .side-card {
        border-radius: 16px;
    }
}