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

:root {
    --ink: #1c1c1c;
    --ink-light: #3d3d3d;
    --vermillion: #b83a2a;
    --vermillion-deep: #8f2a1d;
    --gold: #a67c3b;
    --paper: #f7f3ec;
    --paper-dark: #efe9df;
    --paper-warm: #fbf8f3;
    --line: #d4c9b8;
    --line-light: #e8e0d2;
    --text-muted: #756b60;
    --warning: #8b5a12;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: "Noto Serif SC", "Source Han Serif SC", "Microsoft YaHei", "Songti SC", serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 86% 8%, rgba(184, 58, 42, 0.05), transparent 26rem),
        var(--paper);
    font-size: 16px;
    line-height: 1.95;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 9999;
    opacity: 0.035;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.6' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

a {
    color: var(--vermillion-deep);
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 8vw;
    border-bottom: 1px solid var(--line);
    background: rgba(247, 243, 236, 0.94);
    backdrop-filter: blur(12px);
}

.navbar .home {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.88rem;
    text-decoration: none;
}

.navbar .home:hover {
    color: var(--vermillion);
}

.navbar .home svg {
    width: 16px;
    height: 16px;
}

.navbar .sep {
    color: var(--line);
}

.navbar .page-title {
    font-family: "STKaiti", "KaiTi", serif;
    letter-spacing: 2px;
}

.review-bar {
    padding: 9px 8vw;
    color: #70460d;
    background: #fff1c9;
    border-bottom: 1px solid #e3c880;
    text-align: center;
    font-size: 0.82rem;
}

.page-header {
    padding: 68px 8vw 52px;
    text-align: center;
}

.page-header .eyebrow {
    margin-bottom: 12px;
    color: var(--vermillion);
    font-size: 0.72rem;
    letter-spacing: 4px;
}

.page-header h1 {
    font-family: "STKaiti", "KaiTi", serif;
    font-size: clamp(2.1rem, 6vw, 3.7rem);
    font-weight: 400;
    letter-spacing: 0.18em;
}

.page-header .lead {
    max-width: 720px;
    margin: 18px auto 0;
    color: var(--text-muted);
    font-size: 0.93rem;
}

.meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px 24px;
    margin-top: 18px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.shell {
    display: grid;
    grid-template-columns: minmax(190px, 230px) minmax(0, 820px);
    gap: 52px;
    width: min(1180px, calc(100% - 12vw));
    margin: 0 auto;
    padding-bottom: 80px;
}

.toc {
    position: sticky;
    top: 92px;
    align-self: start;
    padding: 24px 22px;
    border-top: 2px solid var(--vermillion);
    background: rgba(251, 248, 243, 0.74);
}

.toc-title {
    margin-bottom: 12px;
    color: var(--vermillion);
    font-size: 0.72rem;
    letter-spacing: 3px;
}

.toc a {
    display: block;
    padding: 5px 0;
    color: var(--text-muted);
    font-size: 0.84rem;
    text-decoration: none;
}

.toc a:hover {
    color: var(--vermillion);
}

.legal-document {
    min-width: 0;
}

.summary-card,
.review-card {
    margin-bottom: 28px;
    padding: 24px 28px;
    border: 1px solid rgba(184, 58, 42, 0.26);
    background: rgba(251, 248, 243, 0.86);
}

.summary-card {
    border-left: 3px solid var(--vermillion);
}

.review-card {
    border-color: #d9bc78;
    border-left: 3px solid var(--gold);
    color: #5f471e;
    background: #fff8e8;
}

.summary-card strong,
.review-card strong {
    display: block;
    margin-bottom: 7px;
    color: var(--ink);
    font-weight: 600;
}

.summary-card p,
.review-card p {
    margin: 0;
    font-size: 0.9rem;
}

.facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 30px;
}

.fact {
    padding: 18px;
    border: 1px solid var(--line-light);
    background: rgba(251, 248, 243, 0.72);
}

.fact b {
    display: block;
    margin-bottom: 5px;
    color: var(--vermillion);
    font-size: 0.92rem;
}

.fact span {
    color: var(--text-muted);
    font-size: 0.78rem;
    line-height: 1.65;
}

.section {
    padding: 36px 0;
    border-top: 1px solid var(--line);
    scroll-margin-top: 90px;
}

.section:first-of-type {
    border-top-color: var(--vermillion);
}

.section-heading {
    display: grid;
    grid-template-columns: 42px 1fr;
    gap: 14px;
    align-items: start;
    margin-bottom: 18px;
}

.section-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--vermillion);
    border: 1px solid rgba(184, 58, 42, 0.55);
    font-size: 0.75rem;
}

.section h2 {
    padding-top: 1px;
    font-family: "STKaiti", "KaiTi", serif;
    font-size: 1.42rem;
    font-weight: 400;
    letter-spacing: 1px;
}

.section h3 {
    margin: 22px 0 9px;
    font-size: 1rem;
    font-weight: 600;
}

.section p,
.section li {
    color: var(--ink-light);
    font-size: 0.91rem;
}

.section p {
    margin-bottom: 12px;
}

.section ul,
.section ol {
    margin: 10px 0 14px 1.3em;
    padding-left: 1em;
}

.section li {
    margin-bottom: 8px;
    padding-left: 3px;
}

.section li::marker {
    color: var(--vermillion);
}

.important {
    margin: 18px 0;
    padding: 16px 18px;
    border-left: 3px solid var(--vermillion);
    background: rgba(184, 58, 42, 0.055);
    font-size: 0.88rem;
}

.todo {
    padding: 1px 6px;
    color: #70460d;
    background: #fff0bd;
    border-bottom: 1px dashed #9a6b20;
}

.data-table-wrap {
    margin: 18px 0;
    overflow-x: auto;
    border: 1px solid var(--line);
    background: rgba(251, 248, 243, 0.75);
}

.data-table {
    width: 100%;
    min-width: 690px;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 13px 14px;
    border-right: 1px solid var(--line-light);
    border-bottom: 1px solid var(--line-light);
    text-align: left;
    vertical-align: top;
    font-size: 0.8rem;
    line-height: 1.7;
}

.data-table th:last-child,
.data-table td:last-child {
    border-right: 0;
}

.data-table tr:last-child td {
    border-bottom: 0;
}

.data-table th {
    color: var(--ink);
    background: var(--paper-dark);
    font-weight: 600;
    white-space: nowrap;
}

.data-table td {
    color: var(--ink-light);
}

.contact-box {
    margin-top: 18px;
    padding: 20px 22px;
    border: 1px solid var(--line);
    background: var(--paper-warm);
}

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

.cross-links {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.cross-links a {
    color: var(--vermillion-deep);
    font-size: 0.88rem;
    text-decoration: none;
}

.cross-links a:hover {
    text-decoration: underline;
}

footer {
    padding: 34px 8vw;
    color: var(--paper-dark);
    background: var(--ink);
    text-align: center;
}

footer .divider {
    width: 40px;
    height: 1px;
    margin: 0 auto 16px;
    background: var(--vermillion);
    opacity: 0.7;
}

footer p {
    margin: 4px 0;
    color: #988f84;
    font-size: 0.78rem;
    letter-spacing: 1px;
}

footer a {
    color: var(--paper-dark);
    text-decoration: none;
}

@media (max-width: 900px) {
    .shell {
        display: block;
        width: min(820px, calc(100% - 12vw));
    }

    .toc {
        position: static;
        margin-bottom: 32px;
    }

    .toc a {
        display: inline-block;
        margin-right: 16px;
    }
}

@media (max-width: 680px) {
    .navbar {
        padding: 15px 6vw;
    }

    .review-bar {
        padding: 8px 6vw;
        text-align: left;
    }

    .page-header {
        padding: 44px 6vw 34px;
    }

    .page-header h1 {
        letter-spacing: 0.1em;
    }

    .page-header .meta {
        flex-direction: column;
        align-items: center;
        gap: 3px;
    }

    .shell {
        width: 100%;
        padding-right: 6vw;
        padding-left: 6vw;
        padding-bottom: 50px;
    }

    .legal-document,
    .summary-card,
    .review-card,
    .facts,
    .fact {
        width: 100%;
        max-width: 100%;
        overflow-wrap: anywhere;
    }

    .toc {
        padding: 18px;
    }

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

    .summary-card,
    .review-card {
        padding: 20px;
    }

    .section {
        padding: 30px 0;
    }

    .section-heading {
        grid-template-columns: 34px 1fr;
        gap: 12px;
    }

    .section-number {
        width: 32px;
        height: 32px;
    }

    .section h2 {
        font-size: 1.24rem;
    }

    .cross-links {
        flex-direction: column;
    }
}

@media print {
    body {
        background: #fff;
    }

    body::before,
    .navbar,
    .review-bar,
    .toc,
    .cross-links,
    footer {
        display: none;
    }

    .page-header {
        padding: 18px 0 28px;
    }

    .shell {
        display: block;
        width: 100%;
        padding: 0;
    }

    .section {
        break-inside: avoid;
    }
}