:root {
    --bg: #f5ecdf;
    --bg-soft: rgba(255, 248, 239, 0.82);
    --surface: rgba(255, 250, 243, 0.74);
    --surface-strong: rgba(255, 247, 235, 0.92);
    --text: #251710;
    --muted: #6f5648;
    --line: rgba(69, 39, 24, 0.14);
    --accent: #8a4f2c;
    --accent-2: #174031;
    --accent-soft: rgba(138, 79, 44, 0.12);
    --shadow: 0 24px 80px rgba(34, 19, 13, 0.12);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --content-width: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    font-family: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background:
        radial-gradient(circle at top, rgba(212, 168, 109, 0.18), transparent 30%),
        linear-gradient(135deg, #f8f1e7 0%, #f2e5d1 42%, #f8f4eb 100%);
    line-height: 1.65;
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        linear-gradient(rgba(85, 50, 31, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(85, 50, 31, 0.025) 1px, transparent 1px);
    background-size: 26px 26px;
    content: "";
    pointer-events: none;
}

.page-shell {
    width: min(calc(100% - 32px), var(--content-width));
    margin: 20px auto 40px;
}

.site-header {
    position: sticky;
    top: 16px;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    margin-bottom: 18px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(250, 241, 229, 0.8);
    backdrop-filter: blur(18px);
    box-shadow: 0 12px 32px rgba(53, 29, 18, 0.08);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    text-decoration: none;
}

.brand-logo {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: 0 8px 20px rgba(53, 29, 18, 0.12);
}

.brand-text,
.hero h1,
.section-heading h2,
.card h3,
.resource-card h3,
.advantage-card h3,
.scenario-list h3,
.faq summary {
    font-family: "STZhongsong", "Source Han Serif SC", serif;
}

.brand-text {
    font-size: 1.1rem;
    letter-spacing: 0.04em;
}

.site-nav {
    display: flex;
    gap: 18px;
}

.site-nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.96rem;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.brand:hover,
.brand:focus-visible {
    color: var(--accent);
}

.hero {
    display: grid;
    grid-template-columns: 1.18fr 0.92fr;
    gap: 28px;
    align-items: stretch;
    padding: 38px;
    border: 1px solid var(--line);
    border-radius: 36px;
    background:
        linear-gradient(160deg, rgba(255, 248, 237, 0.94), rgba(245, 230, 210, 0.86)),
        linear-gradient(135deg, rgba(138, 79, 44, 0.08), rgba(23, 64, 49, 0.08));
    box-shadow: var(--shadow);
    overflow: hidden;
}

.hero-copy,
.hero-panel,
.section,
.site-footer {
    animation: lift-in 0.7s ease both;
}

.eyebrow,
.section-kicker,
.panel-kicker {
    margin: 0 0 14px;
    color: var(--accent);
    font-size: 0.9rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.hero h1 {
    margin: 0;
    font-size: clamp(2.8rem, 4vw, 4.8rem);
    line-height: 1.02;
}

.hero-text {
    max-width: 660px;
    margin: 20px 0 0;
    font-size: 1.08rem;
    color: #4d392f;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
}

.button.primary {
    background: linear-gradient(135deg, var(--accent), #b76f3f);
    color: #fff;
    box-shadow: 0 14px 26px rgba(138, 79, 44, 0.22);
}

.button.secondary {
    border-color: rgba(138, 79, 44, 0.24);
    background: rgba(255, 252, 247, 0.7);
    color: var(--text);
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 0;
    margin: 28px 0 0;
    list-style: none;
}

.hero-tags li {
    padding: 8px 14px;
    border: 1px solid rgba(138, 79, 44, 0.14);
    border-radius: 999px;
    background: rgba(255, 248, 240, 0.75);
    color: var(--muted);
    font-size: 0.92rem;
}

.hero-panel {
    display: grid;
    gap: 16px;
}

.hero-panel-card,
.panel-grid article,
.card,
.resource-card,
.advantage-card,
.scenario-list article,
.faq-list details,
.site-footer {
    border: 1px solid var(--line);
    background: var(--surface);
    backdrop-filter: blur(10px);
}

.hero-panel-card {
    padding: 22px;
    border-radius: var(--radius-lg);
}

.banner-frame {
    margin: 0;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(255, 250, 243, 0.86), rgba(247, 238, 226, 0.92));
}

.hero-banner {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 18px;
}

.hero-panel-card strong {
    display: block;
    margin-bottom: 8px;
    font-size: 1.3rem;
}

.panel-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.panel-grid article {
    min-height: 170px;
    padding: 20px;
    border-radius: var(--radius-md);
}

.panel-grid span {
    display: inline-block;
    color: var(--accent);
    font-weight: 700;
    font-size: 0.9rem;
}

.panel-grid h3 {
    margin: 12px 0 8px;
    font-size: 1.12rem;
}

.section {
    position: relative;
    margin-top: 24px;
    padding: 34px;
    border: 1px solid var(--line);
    border-radius: 32px;
    background: var(--bg-soft);
    box-shadow: 0 16px 40px rgba(55, 31, 20, 0.06);
}

.section-heading {
    display: grid;
    gap: 10px;
    margin-bottom: 22px;
}

.section-heading h2 {
    margin: 0;
    font-size: clamp(1.8rem, 2.6vw, 3rem);
    line-height: 1.14;
}

.section-kicker {
    margin-bottom: 0;
}

.intro-layout,
.resource-grid,
.advantage-grid,
.scenario-list,
.seo-copy-grid {
    display: grid;
    gap: 18px;
}

.intro-layout {
    grid-template-columns: 1.05fr 0.95fr 0.95fr;
}

.resource-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.advantage-grid,
.scenario-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.seo-copy-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.resource-card,
.advantage-card,
.scenario-list article {
    padding: 24px;
    border-radius: var(--radius-md);
}

.card-highlight {
    background: linear-gradient(145deg, rgba(255, 246, 232, 0.94), rgba(250, 229, 197, 0.82));
}

.card h3,
.resource-card h3,
.advantage-card h3,
.scenario-list h3 {
    margin: 0 0 10px;
    font-size: 1.22rem;
}

.card p,
.resource-card p,
.advantage-card p,
.scenario-list p,
.hero-panel-card p,
.panel-grid p,
.seo-copy-grid p,
.site-footer p,
.faq-list p {
    margin: 0;
    color: var(--muted);
}

.showcase {
    background:
        linear-gradient(180deg, rgba(255, 251, 246, 0.92), rgba(246, 239, 230, 0.86)),
        radial-gradient(circle at right top, rgba(23, 64, 49, 0.08), transparent 36%);
}

.seo-copy {
    background:
        linear-gradient(180deg, rgba(255, 246, 232, 0.92), rgba(255, 252, 247, 0.86)),
        radial-gradient(circle at left top, rgba(138, 79, 44, 0.12), transparent 32%);
}

.faq-list {
    display: grid;
    gap: 16px;
}

.faq-list details {
    padding: 20px 22px;
    border-radius: var(--radius-sm);
}

.faq-list summary {
    cursor: pointer;
    font-size: 1.08rem;
    list-style: none;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary::after {
    float: right;
    color: var(--accent);
    content: "+";
    font-size: 1.2rem;
    line-height: 1;
}

.faq-list details[open] summary::after {
    content: "-";
}

.faq-list p {
    margin-top: 12px;
}

.site-footer {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    padding: 26px 30px;
    margin-top: 24px;
    border-radius: 24px;
}

@keyframes lift-in {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1080px) {
    .hero,
    .intro-layout,
    .resource-grid,
    .advantage-grid,
    .scenario-list,
    .seo-copy-grid,
    .site-footer {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 28px;
    }

    .site-footer {
        display: grid;
    }
}

@media (max-width: 760px) {
    .page-shell {
        width: min(calc(100% - 20px), var(--content-width));
        margin-top: 10px;
    }

    .site-header {
        position: static;
        flex-direction: column;
        gap: 12px;
        border-radius: 24px;
    }

    .site-nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero,
    .section,
    .site-footer {
        padding: 22px;
        border-radius: 24px;
    }

    .panel-grid,
    .resource-grid,
    .advantage-grid,
    .scenario-list,
    .intro-layout,
    .seo-copy-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.4rem;
    }

    .button {
        width: 100%;
    }

    .hero-actions {
        flex-direction: column;
    }
}