.page-hero {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    padding: calc(var(--header-h) + 62px) 0 clamp(62px, 8vw, 96px);
    background:
        radial-gradient(880px 420px at 78% 6%, rgba(88, 142, 214, 0.3), transparent 62%),
        radial-gradient(680px 380px at 4% 96%, rgba(240, 176, 70, 0.16), transparent 60%),
        linear-gradient(160deg, #050e1f 0%, #0a1c36 58%, #071426 100%);
    color: #fff;
}

.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image:
        radial-gradient(circle, rgba(255, 255, 255, 0.5) 1px, transparent 1.3px),
        radial-gradient(circle, rgba(255, 220, 150, 0.45) 1px, transparent 1.3px);
    background-size: 220px 220px, 320px 320px;
    background-position: 0 0, 120px 90px;
    opacity: 0.4;
    pointer-events: none;
}

.page-hero::after {
    content: "";
    position: absolute;
    right: -120px;
    bottom: -180px;
    width: 460px;
    height: 460px;
    border-radius: 50%;
    border: 1px solid rgba(247, 201, 106, 0.14);
    box-shadow: inset 0 0 120px rgba(247, 201, 106, 0.08);
    pointer-events: none;
}

.page-hero .wrap {
    position: relative;
    z-index: 1;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    font-size: 12.5px;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.68);
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: var(--gold-300);
}

.breadcrumb span[aria-hidden] {
    color: rgba(255, 255, 255, 0.28);
}

.page-hero h1 {
    margin-top: 20px;
    font-family: var(--font-serif);
    font-size: clamp(32px, 4.6vw, 54px);
    font-weight: 700;
    line-height: 1.28;
    letter-spacing: 0.03em;
    text-shadow: 0 2px 30px rgba(0, 0, 0, 0.4);
}

.page-lead {
    max-width: 58ch;
    margin-top: 18px;
    font-size: clamp(15px, 1.3vw, 16.5px);
    line-height: 1.95;
    color: rgba(255, 255, 255, 0.74);
}

.page-body {
    padding: clamp(38px, 4.5vw, 64px) 0 clamp(68px, 8vw, 104px);
    background: var(--paper);
}

.layout {
    display: grid;
    grid-template-columns: 234px minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 4vw, 54px);
}

.sidebar {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sidebar-card {
    padding: 22px 20px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.72);
    background: linear-gradient(158deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.68) 100%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    backdrop-filter: blur(20px) saturate(150%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), var(--shadow-sm);
}

.sidebar-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.24em;
    color: var(--gold-700);
}

.sidebar-title .spark {
    width: 10px;
    height: 10px;
}

.toc a {
    display: block;
    padding: 8px 0 8px 13px;
    border-left: 2px solid rgba(29, 48, 67, 0.1);
    font-size: 14px;
    line-height: 1.55;
    color: var(--text-soft);
    transition: color 0.25s, border-color 0.25s, background 0.25s, padding-left 0.25s;
}

.toc a:hover {
    padding-left: 15px;
    color: var(--ink-700);
    border-color: var(--gold-400);
}

.toc a.is-active {
    padding-left: 15px;
    border-color: var(--gold-500);
    background: linear-gradient(90deg, rgba(247, 201, 106, 0.14), transparent 80%);
    color: var(--ink-800);
    font-weight: 600;
}

.sidebar-more p {
    font-size: 13px;
    line-height: 1.8;
    color: var(--text-soft);
}

.sidebar-more a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 10px;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--gold-400);
    font-size: 13.5px;
    font-weight: 600;
    color: var(--ink-700);
}

.sidebar-more a::after {
    content: "→";
    transition: transform 0.25s var(--ease);
}

.sidebar-more a:hover::after {
    transform: translateX(3px);
}

.article {
    display: flex;
    flex-direction: column;
    gap: 22px;
    min-width: 0;
}

.sub-section {
    padding: clamp(24px, 3.4vw, 42px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(29, 48, 67, 0.06);
    background: #fff;
    box-shadow: var(--shadow-sm);
    scroll-margin-top: calc(var(--header-h) + 22px);
}

.article h2 {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 18px;
    font-family: var(--font-serif);
    font-size: clamp(22px, 2.3vw, 29px);
    font-weight: 700;
    line-height: 1.45;
    letter-spacing: 0.02em;
    color: var(--ink-800);
}

.article h2::before {
    content: "";
    flex: 0 0 auto;
    width: 14px;
    height: 14px;
    margin-top: 0.46em;
    background: linear-gradient(135deg, #ffe3a3, #e9ab3d);
    clip-path: polygon(50% 0, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0 50%, 40% 40%);
}

.article h3 {
    margin: 26px 0 10px;
    padding-left: 13px;
    border-left: 3px solid rgba(247, 201, 106, 0.85);
    font-family: var(--font-serif);
    font-size: clamp(17.5px, 1.75vw, 20px);
    font-weight: 700;
    line-height: 1.55;
    color: var(--ink-700);
}

.article h3:first-of-type {
    margin-top: 4px;
}

.article p {
    margin-bottom: 14px;
    font-size: 16.5px;
    line-height: 1.98;
    color: #33465a;
    text-indent: 2em;
}

.article p:last-child {
    margin-bottom: 0;
}

.article b {
    font-weight: 700;
    color: var(--ink-800);
}

.article a:not(.btn) {
    color: var(--gold-700);
    border-bottom: 1px solid rgba(217, 154, 43, 0.4);
}

.article ul {
    display: grid;
    gap: 9px;
    margin: 0 0 16px;
}

.article ul > li {
    position: relative;
    padding-left: 22px;
    font-size: 16px;
    line-height: 1.9;
    color: #3a4d60;
}

.article ul > li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 0.82em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gold-400);
    box-shadow: 0 0 0 4px rgba(247, 201, 106, 0.16);
}

.article ol {
    display: grid;
    gap: 12px;
    margin: 0 0 16px;
    counter-reset: step;
}

.article ol > li {
    position: relative;
    padding-left: 44px;
    font-size: 16px;
    line-height: 1.9;
    color: #3a4d60;
    counter-increment: step;
}

.article ol > li::before {
    content: counter(step, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 0.18em;
    display: grid;
    width: 30px;
    height: 30px;
    place-items: center;
    border-radius: 9px;
    background: linear-gradient(150deg, #fdf1d6, #f8e3b6);
    font-family: var(--font-serif);
    font-size: 13.5px;
    font-weight: 700;
    color: var(--gold-700);
}

.wu-bu {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(208px, 1fr));
    gap: 12px;
    margin: 16px 0 20px;
}

.wu-bu p {
    margin: 0;
    padding: 16px 18px;
    border-radius: 14px;
    border: 1px solid rgba(29, 48, 67, 0.07);
    background: #fbf8f2;
    font-size: 14.5px;
    line-height: 1.8;
    color: #3a4d60;
    text-indent: 0;
}

.wu-bu p b {
    display: block;
    margin-bottom: 3px;
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--ink-800);
}

.mini-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(252px, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.mini-card {
    padding: 22px 24px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.7);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.86) 0%, rgba(253, 250, 244, 0.68) 100%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
    backdrop-filter: blur(16px) saturate(150%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), var(--shadow-sm);
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.mini-card:hover {
    transform: translateY(-3px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9), var(--shadow);
}

.mini-card h3 {
    margin: 0 0 8px;
    padding: 0;
    border: 0;
    font-size: 17.5px;
}

.mini-card p {
    margin: 0;
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-soft);
    text-indent: 0;
}

.table-wrap {
    margin: 18px 0 20px;
    overflow-x: auto;
    border: 1px solid rgba(29, 48, 67, 0.1);
    border-radius: 16px;
    -webkit-overflow-scrolling: touch;
}

.flag-table {
    width: 100%;
    min-width: 540px;
    border-collapse: collapse;
    background: #fff;
    font-size: 15px;
}

.flag-table th {
    padding: 13px 18px;
    background: linear-gradient(135deg, var(--ink-700), var(--ink-800));
    font-family: var(--font-serif);
    font-size: 15.5px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-align: left;
    color: #fff;
}

.flag-table td {
    padding: 13px 18px;
    border-top: 1px solid rgba(29, 48, 67, 0.08);
    line-height: 1.8;
    color: #3a4d60;
    vertical-align: top;
}

.flag-table tbody tr:nth-child(even) {
    background: #fbf8f2;
}

.flag-table tbody tr:hover {
    background: rgba(247, 201, 106, 0.12);
}

.flag-table td:first-child {
    font-weight: 600;
    color: var(--ink-700);
}

.note-box {
    margin: 20px 0 4px;
    padding: 18px 24px 18px 24px;
    border: 1px solid rgba(240, 176, 70, 0.36);
    border-left: 4px solid var(--gold-500);
    border-radius: 4px 18px 18px 4px;
    background: linear-gradient(105deg, rgba(253, 243, 220, 0.88), rgba(251, 247, 241, 0.62) 72%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    backdrop-filter: blur(14px) saturate(140%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
    font-size: 15px;
    line-height: 1.92;
    color: #4a3a1a;
    text-indent: 0;
}

.note-box strong {
    color: #8a5b12;
    font-weight: 700;
}

.page-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 4px;
}

.page-actions .btn {
    padding: 12px 24px;
    font-size: 14.5px;
}

.btn--ink {
    color: var(--ink-800);
    border: 1px solid rgba(255, 255, 255, 0.75);
    background: linear-gradient(158deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.66) 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), var(--shadow-sm);
}

.btn--ink:hover {
    transform: translateY(-2px);
    border-color: rgba(247, 201, 106, 0.75);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), var(--shadow);
}

@media (max-width: 1000px) {
    .layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .sidebar {
        display: none;
    }
}

@media (max-width: 640px) {
    .page-hero {
        padding-top: calc(var(--header-h) + 40px);
    }

    .page-hero::after {
        display: none;
    }

    .article p {
        font-size: 16px;
        text-indent: 0;
    }

    .article h3 {
        margin-top: 22px;
    }

    .sub-section {
        border-radius: 20px;
    }

    .flag-table {
        min-width: 0;
        font-size: 14px;
    }

    .flag-table th,
    .flag-table td {
        padding: 11px 13px;
    }

    .flag-table td:first-child,
    .flag-table th:first-child {
        width: 32%;
    }

    .flag-table th:first-child {
        white-space: nowrap;
    }

    .note-box {
        text-indent: 0;
        padding: 16px 18px;
    }
}