:root {
    --page-bg: #eee8e1;
    --shell-bg: rgba(249, 246, 242, 0.94);
    --panel-bg: #fffdfa;
    --panel-soft: #f7f2eb;
    --line: rgba(112, 95, 79, 0.13);
    --line-strong: rgba(112, 95, 79, 0.22);
    --text: #273036;
    --muted: #726b63;
    --sand: #c9b196;
    --sand-soft: #efe2d3;
    --sage: #a9c0a3;
    --sage-soft: #e2ecde;
    --ochre: #e2bf74;
    --ochre-soft: #f4e7be;
    --blue-soft: rgba(46, 74, 125, 0.14);
    --blue-text: #2e4a7d;
    --shadow: 0 28px 70px rgba(78, 61, 48, 0.1);
    --card-shadow: 0 14px 34px rgba(94, 76, 60, 0.06);
    --max-width: 1220px;
    --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-display: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at top, rgba(214, 198, 179, 0.42), transparent 28%),
        linear-gradient(180deg, #f3eee8 0%, var(--page-bg) 100%);
    font-family: var(--font-sans);
}

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

.page-shell {
    width: min(calc(100% - 2rem), 1180px);
    margin: 1rem auto;
    padding: clamp(1.35rem, 2vw, 2.3rem);
    border: 1px solid rgba(255, 255, 255, 0.88);
    border-radius: 30px;
    background: var(--shell-bg);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.eyebrow,
.meta-label,
.section-eyebrow,
.panel-kicker,
.platform-index {
    display: inline-flex;
    align-items: center;
    color: var(--muted);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    gap: 1.8rem;
    align-items: start;
}

.hero-main {
    padding: 0.15rem 0 0.1rem;
}

.hero-main h1 {
    margin: 0.35rem 0 0;
    font-family: var(--font-display);
    font-size: clamp(2.95rem, 4.8vw, 4.7rem);
    line-height: 0.98;
    letter-spacing: -0.04em;
}

.hero-summary {
    max-width: 35rem;
    margin: 1.05rem 0 0;
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.8;
    text-wrap: pretty;
}

.hero-side {
    display: grid;
    gap: 0.95rem;
}

.meta-card,
.platform-card,
.scope-card,
.panel,
.mini-card,
.subsection-card,
.paper-note {
    border: 1px solid var(--line);
    background: var(--panel-bg);
    box-shadow: var(--card-shadow);
}

.meta-card {
    padding: 1.2rem 1.25rem;
    border-radius: 24px;
}

.meta-card strong,
.meta-card small {
    display: block;
}

.meta-card strong {
    margin-top: 0.55rem;
    font-size: 1.05rem;
}

.meta-card small {
    margin-top: 0.4rem;
    color: var(--muted);
    line-height: 1.7;
}

.section {
    margin-top: 2.8rem;
    padding-top: 2.15rem;
    border-top: 1px solid rgba(112, 95, 79, 0.09);
}

.section-heading {
    max-width: none;
}

.section-heading-row {
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) minmax(280px, 0.82fr);
    gap: 1.1rem 2rem;
    align-items: start;
}

.section-heading h2 {
    margin: 0.45rem 0 0;
    max-width: 18ch;
    font-family: var(--font-display);
    font-size: clamp(1.68rem, 1.28rem + 0.95vw, 2.2rem);
    line-height: 1.2;
    letter-spacing: -0.025em;
    text-wrap: balance;
}

.section-copy {
    margin: 0;
    max-width: 31rem;
    padding-top: 0.4rem;
    color: var(--muted);
    font-size: 0.96rem;
    line-height: 1.75;
    text-wrap: pretty;
}

.platform-grid,
.scope-grid,
.section-grid,
.operations-grid {
    margin-top: 1.3rem;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.platform-card {
    display: grid;
    gap: 0.7rem;
    min-height: 186px;
    padding: 1.3rem;
    border-radius: 26px;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.platform-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 34px rgba(94, 76, 60, 0.08);
}

.platform-card h3,
.scope-card h3,
.panel h3,
.mini-card h4,
.subsection-card h4,
.paper-note h4 {
    margin: 0;
    color: var(--text);
}

.platform-card h3 {
    font-size: 1.2rem;
    line-height: 1.28;
}

.platform-card p,
.scope-card p,
.panel p,
.mini-card p,
.subsection-card p,
.paper-note p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
    line-height: 1.72;
    text-wrap: pretty;
}

.platform-card small {
    margin-top: auto;
    color: #5f574f;
    font-size: 0.84rem;
    line-height: 1.6;
}

.scope-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.95rem;
}

.scope-card {
    padding: 1.3rem;
    border-radius: 26px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(247, 242, 235, 0.96));
}

.scope-card h3 {
    font-size: 1.18rem;
    line-height: 1.3;
}

.scope-card p {
    margin-top: 0.7rem;
}

.section-grid-travel {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr) minmax(300px, 0.85fr);
    gap: 1rem;
}

.section-grid-local {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.panel {
    padding: 1.35rem;
    border-radius: 28px;
}

.panel-primary {
    background:
        radial-gradient(circle at right top, rgba(255, 255, 255, 0.34), transparent 30%),
        linear-gradient(135deg, #e2efcc 0%, #e9efd7 48%, #f0e6ca 100%);
}

.panel-note {
    background: linear-gradient(180deg, rgba(255, 252, 246, 0.95), rgba(247, 239, 228, 0.95));
}

.panel-kicker {
    margin-bottom: 0.75rem;
}

.panel h3 {
    max-width: 15ch;
    font-size: 1.38rem;
    line-height: 1.34;
    font-family: var(--font-display);
}

.stack-list,
.detail-list,
.compact-list {
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
}

.stack-list {
    display: grid;
    gap: 0.95rem;
}

.stack-list li,
.detail-list li,
.compact-list li {
    padding-top: 0.85rem;
    border-top: 1px dashed var(--line-strong);
}

.stack-list li:first-child,
.detail-list li:first-child,
.compact-list li:first-child {
    padding-top: 0;
    border-top: 0;
}

.stack-topline,
.mini-topline,
.note-meta {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.85rem;
}

.stack-topline strong,
.mini-topline strong,
.compact-list strong,
.detail-list strong {
    font-size: 0.95rem;
    color: var(--text);
}

.stack-topline span,
.mini-topline span {
    color: var(--muted);
    font-size: 0.8rem;
}

.stack-list p,
.compact-list p {
    margin-top: 0.42rem;
}

.mini-stack {
    display: grid;
    gap: 0.85rem;
    margin-top: 1rem;
}

.mini-card {
    padding: 1rem;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 244, 238, 0.96));
}

.mini-card-sand {
    background: linear-gradient(180deg, rgba(245, 235, 223, 0.98), rgba(255, 253, 249, 0.98));
}

.mini-card h4 {
    margin-top: 0.58rem;
    font-size: 1.02rem;
    line-height: 1.34;
}

.mini-card p {
    margin-top: 0.55rem;
}

.detail-list {
    display: grid;
    gap: 0.6rem;
}

.detail-list li {
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin-top: 0.8rem;
}

.tag {
    display: inline-flex;
    align-items: center;
    min-height: 1.95rem;
    padding: 0 0.78rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.78);
    color: #5d544c;
    font-size: 0.82rem;
}

.tag-sand {
    background: rgba(201, 177, 150, 0.18);
    color: #7a5d45;
}

.tag-blue {
    background: var(--blue-soft);
    color: var(--blue-text);
}

.pricing-line {
    margin-top: 0.8rem;
    color: #6a5240;
    font-size: 0.92rem;
    font-weight: 700;
}

.dual-stack {
    display: grid;
    gap: 0.85rem;
    margin-top: 1rem;
}

.subsection-card {
    padding: 1rem;
    border-radius: 20px;
    background: var(--panel-soft);
}

.subsection-card h4 {
    font-size: 0.96rem;
    letter-spacing: 0.01em;
}

.subsection-card .compact-list {
    margin-top: 0.85rem;
}

.paper-note {
    position: relative;
    margin-top: 1rem;
    padding: 1.15rem 1rem 1rem;
    border-radius: 22px;
    background:
        radial-gradient(circle at right bottom, rgba(46, 74, 125, 0.08), transparent 26%),
        linear-gradient(180deg, #fffcf5 0%, #fff8ec 100%);
}

.pin-dot {
    position: absolute;
    top: 0.75rem;
    right: 1rem;
    width: 12px;
    height: 12px;
    border-radius: 999px;
    background: linear-gradient(180deg, #8c6e56, #5a4232);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.22);
}

.note-meta {
    padding-right: 1rem;
}

.note-meta strong,
.note-meta span {
    color: var(--muted);
    font-size: 0.82rem;
}

.paper-note h4 {
    margin-top: 0.8rem;
    font-size: 1.08rem;
    line-height: 1.38;
}

.note-body {
    display: grid;
    gap: 0.7rem;
    margin-top: 0.8rem;
}

.note-action {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 0.95rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.wechat-dot {
    display: inline-grid;
    place-items: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 999px;
    background: rgba(102, 187, 106, 0.15);
    color: #4b9b57;
    font-size: 0.84rem;
    font-weight: 700;
}

.operations-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.link-cluster {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.policy-link,
.footer-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.7rem;
    padding: 0 1rem;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.9);
    color: #4e443b;
    font-size: 0.9rem;
    font-weight: 700;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.policy-link:hover,
.footer-link:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(94, 76, 60, 0.08);
}

.site-footer {
    margin-top: 2.6rem;
    padding-top: 1.55rem;
    border-top: 1px solid rgba(112, 95, 79, 0.12);
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.footer-meta {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.2rem;
    margin-top: 1.2rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.footer-meta strong,
.footer-meta span,
.footer-meta small {
    display: block;
}

.footer-meta small {
    margin-top: 0.3rem;
    line-height: 1.6;
}

@media (max-width: 1120px) {
    .hero,
    .section-heading-row,
    .section-grid-travel,
    .section-grid-local,
    .operations-grid,
    .scope-grid,
    .platform-grid {
        grid-template-columns: 1fr;
    }

    .section-heading h2 {
        max-width: none;
    }
}

@media (max-width: 760px) {
    .page-shell {
        width: min(calc(100% - 1rem), var(--max-width));
        padding: 1.1rem;
        border-radius: 24px;
    }

    .hero-main h1 {
        font-size: 3rem;
    }

    .meta-card,
    .platform-card,
    .scope-card,
    .panel {
        padding: 1rem;
    }

    .platform-card {
        min-height: auto;
    }

    .footer-meta {
        flex-direction: column;
    }
}