:root {
    --bg: #ffffff;
    --surface: #fbfbfd;
    --text: #0b1320;
    --muted: #5f6b7a;
    --border: #e5e7eb;
    --primary: #1a73e8;
}

/* Base */
html, body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Noto Sans JP', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
    font-size: 16px;
    line-height: 1.6;
}

h1, h2, h3 { color: #0b1320; font-weight: 700; }
h1 { font-size: 2rem; margin: 1.5rem 0 .75rem; }
h2 { font-size: 1.5rem; margin: 1.25rem 0 .5rem; }
h3 { font-size: 1.25rem; margin: 1rem 0 .5rem; font-weight: 600; }

p { margin: .75rem 0; color: #1f2937; }

h1:focus { outline: none; }

a, .btn-link { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem; }

.topbar {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.9);
    border-bottom: 1px solid var(--border);
    backdrop-filter: saturate(180%) blur(8px);
}
.topbar-content { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.site-title-link { font-weight: 700; color: #111827; font-size: 1.05rem; letter-spacing: .2px; }

/* Nav */
.top-nav .nav-list { display: flex; gap: .25rem; align-items: center; list-style: none; margin: 0; padding: 0; }
.top-nav .nav-link { display: inline-block; padding: .4rem .7rem; border-radius: 6px; color: #334155; font-weight: 600; }
.top-nav .nav-link:hover { background: #f2f6ff; text-decoration: none; }
.top-nav .nav-link.active { color: var(--primary); background: #e8f0fe; }

/* Content */
.content { padding: 1.25rem 0 2.5rem; }
.content > * { max-width: 860px; margin-left: auto; margin-right: auto; }

/* Buttons (Bootstrap overrides minimal) */
.btn-primary { color: #fff; background-color: var(--primary); border-color: var(--primary); }
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem rgba(26,115,232,0.45);
}

/* Validation */
.valid.modified:not([type=checkbox]) { outline: 1px solid #26b050; }
.invalid { outline: 1px solid red; }
.validation-message { color: red; }

/* Error UI */
#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 0.75rem; top: 0.5rem; }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}
.blazor-error-boundary::after { content: "An error has occurred." }

/* Loading */
.loading-progress { position: relative; display: block; width: 8rem; height: 8rem; margin: 20vh auto 1rem auto; }
.loading-progress circle {
    fill: none; stroke: #e0e0e0; stroke-width: 0.6rem;
    transform-origin: 50% 50%; transform: rotate(-90deg);
}
.loading-progress circle:last-child {
    stroke: var(--primary);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}
.loading-progress-text { position: absolute; text-align: center; font-weight: bold; inset: calc(20vh + 3.25rem) 0 auto 0.2rem; }
.loading-progress-text:after { content: var(--blazor-load-percentage-text, "Loading"); }

code { color: #c02d76; }

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}
thead th {
    background: #f5f7fb;
    color: var(--text);
    text-align: left;
    font-weight: 600;
}
th, td { padding: .75rem .9rem; border-bottom: 1px solid var(--border); }
tbody tr:hover { background: #f7f9ff; }

/* Code block */
pre {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1.2rem;
    overflow: auto;
}

/* Callout */
.callout {
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    background: #f4f8ff;
    border-radius: 8px;
    padding: .9rem 1rem;
    margin: 1rem 0 1.25rem;
}

/* Landing */
.junue-landing-page .home-billboard {
    padding: 3rem 2rem;
    background: linear-gradient(180deg, #f7faff, #ffffff);
    border-bottom: 1px solid #e5e7eb;
    text-align: center;
}
.junue-landing-page .billboard-main-content h3 { font-size: 2rem; margin: 0.3rem 0; }
.junue-landing-page .billboard-sub-content { margin-top: 1rem; color: #4b5563; }