:root {
    --bg: #f6f1ea;
    --surface: #fdfaf6;
    --surface-strong: #efe5d8;
    --ink: #171412;
    --muted: #62584d;
    --line: rgba(23, 20, 18, 0.12);
    --accent: #8f5d31;
    --accent-soft: rgba(143, 93, 49, 0.12);
    --dark: #191614;
    --dark-muted: rgba(255, 246, 237, 0.72);
    --shadow: 0 28px 70px rgba(23, 20, 18, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(143, 93, 49, 0.08), transparent 28%),
        linear-gradient(180deg, #fbf7f2 0%, var(--bg) 100%);
    color: var(--ink);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: inherit;
}

img {
    max-width: 100%;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(18px);
    background: rgba(246, 241, 234, 0.86);
    border-bottom: 1px solid var(--line);
}

.nav-shell,
.section,
.site-footer,
.statement-bar-inner {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.nav-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
    padding: 18px 0;
}

.brand {
    text-decoration: none;
    font-family: "Noto Serif SC", serif;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.brand span {
    display: block;
    margin-top: 4px;
    font-family: "Inter", sans-serif;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--muted);
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    min-width: 0;
}

.site-nav a,
.footer-links a {
    text-decoration: none;
    color: var(--muted);
    font-size: 0.95rem;
}

.site-nav a:hover,
.footer-links a:hover,
.page-link:hover,
.article-link:hover {
    color: var(--accent);
}

.nav-cta,
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    text-decoration: none;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.nav-cta {
    padding: 12px 18px;
    border: 1px solid var(--ink);
    font-size: 0.9rem;
}

.button {
    padding: 15px 24px;
    border: 1px solid transparent;
    font-weight: 600;
}

.button-primary {
    background: var(--ink);
    color: #fff7ef;
}

.button-primary:hover,
.nav-cta:hover {
    transform: translateY(-1px);
    background: var(--accent);
    border-color: var(--accent);
    color: #fff7ef;
}

.button-secondary {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.4);
}

.button-secondary:hover {
    transform: translateY(-1px);
    border-color: var(--accent);
    color: var(--accent);
}

.hero {
    width: min(1280px, calc(100% - 32px));
    margin: 18px auto 0;
    min-height: calc(100svh - 94px);
    border-radius: 34px;
    overflow: hidden;
}

.hero-home,
.hero-page {
    background:
        linear-gradient(135deg, rgba(13, 10, 8, 0.9), rgba(38, 31, 26, 0.76)),
        radial-gradient(circle at top right, rgba(210, 164, 116, 0.32), transparent 38%),
        #1b1714;
    color: #fff8f0;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.75fr);
    gap: 48px;
    align-items: end;
    width: min(1180px, calc(100% - 48px));
    margin: 0 auto;
    padding: 76px 0 72px;
}

.hero-page .hero-grid {
    min-height: 520px;
    align-items: center;
}

.eyebrow {
    margin: 0 0 18px;
    color: rgba(255, 242, 229, 0.75);
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.74rem;
    font-weight: 600;
}

.section .eyebrow,
.statement-bar .eyebrow,
.site-footer .eyebrow {
    color: var(--accent);
}

h1,
h2,
h3 {
    margin: 0;
    font-family: "Noto Serif SC", serif;
    letter-spacing: -0.03em;
}

h1 {
    font-size: clamp(2.9rem, 7vw, 5.8rem);
    line-height: 1.03;
    max-width: 12ch;
    text-wrap: balance;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.12;
    max-width: none;
    text-wrap: balance;
}

h3 {
    font-size: 1.4rem;
    margin-bottom: 18px;
}

.hero-lead,
.section-copy,
.hero-meta p,
.signal-block li,
.page-link span,
.article-link span,
.faq-stack p,
.footer-grid p,
.copy-block p,
.checklist li,
.feature-list li,
.text-flow p,
.text-flow li,
.definition-list dt,
.definition-list dd,
.panel-list li,
.breadcrumb,
.stat-list li,
.note,
.callout p,
.meta-list li {
    color: inherit;
    font-size: 1rem;
}

.hero-lead {
    max-width: none;
    color: rgba(255, 245, 235, 0.82);
    margin: 0;
    font-size: 1.1rem;
}

.hero-intro-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 20px 28px;
    align-items: start;
    margin-top: 24px;
    max-width: 920px;
}

.hero-copy,
.hero-meta,
.content-panel,
.callout,
.contact-card,
.section-head,
.statement-bar-inner {
    min-width: 0;
}

.hero-lead-side {
    color: rgba(255, 245, 235, 0.74);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 30px;
}

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

.signal-block,
.page-link,
.article-link,
.content-panel,
.callout,
.faq-stack details,
.article-shell,
.definition-list,
.panel-split > article,
.stat-panel,
.contact-card {
    border: 1px solid rgba(255, 244, 232, 0.12);
    background: rgba(255, 249, 241, 0.06);
    border-radius: 24px;
    padding: 22px;
    box-shadow: var(--shadow);
}

.signal-block ul,
.feature-list,
.panel-list,
.checklist,
.stat-list,
.meta-list {
    margin: 0;
    padding-left: 18px;
}

.signal-label,
.page-link-label,
.article-link-label,
.detail-label {
    display: inline-block;
    margin-bottom: 12px;
    font-size: 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-weight: 700;
}

.statement-bar {
    padding: 34px 0 6px;
}

.statement-bar-inner {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 18px 0;
}

.statement-bar p {
    margin: 0;
    max-width: 68rem;
    color: var(--muted);
    font-size: 1rem;
    overflow-wrap: anywhere;
}

.section {
    padding: 72px 0;
}

.section-tinted {
    background: linear-gradient(180deg, rgba(239, 229, 216, 0.56), rgba(239, 229, 216, 0.18));
    border-radius: 32px;
    margin-top: 14px;
}

.section-dark {
    width: min(1280px, calc(100% - 32px));
    margin: 18px auto 0;
    border-radius: 34px;
    background:
        radial-gradient(circle at top left, rgba(143, 93, 49, 0.24), transparent 28%),
        #171412;
    color: #fff8f0;
}

.section-head {
    display: grid;
    justify-items: center;
    text-align: center;
    row-gap: 14px;
    margin: 0 auto 44px;
    max-width: 980px;
}

.section-head .eyebrow {
    margin-bottom: 0;
    padding-top: 0;
}

.section-head h2 {
    width: min(100%, 20ch);
    white-space: normal;
    font-size: clamp(1.9rem, 3.6vw, 3.2rem);
    overflow-wrap: anywhere;
}

.section-head p {
    margin: 0;
    max-width: 42rem;
    color: var(--muted);
    text-align: center;
    overflow-wrap: anywhere;
}

.section-head > p:not(.eyebrow) {
    font-size: 1rem;
    line-height: 1.85;
}

.two-column,
.panel-split,
.article-shell,
.cta-layout,
.footer-grid,
.service-grid,
.card-pair,
.three-column {
    display: grid;
    gap: 24px;
}

.two-column,
.panel-split,
.cta-layout,
.service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.link-grid,
.card-pair {
    display: grid;
    gap: 18px;
}

.page-link,
.article-link {
    text-decoration: none;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.52);
    border-color: var(--line);
}

.page-link strong,
.article-link strong {
    display: block;
    margin-bottom: 10px;
    font-family: "Noto Serif SC", serif;
    font-size: 1.35rem;
    overflow-wrap: anywhere;
}

.faq-stack {
    display: grid;
    gap: 14px;
}

.faq-stack details {
    background: rgba(255, 255, 255, 0.54);
    border-color: var(--line);
    box-shadow: none;
}

.faq-stack summary {
    cursor: pointer;
    font-weight: 600;
    list-style: none;
}

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

.faq-stack p {
    margin: 14px 0 0;
    color: var(--muted);
}

.diagnosis-form {
    display: grid;
    gap: 16px;
}

.diagnosis-form label {
    display: grid;
    gap: 8px;
    font-size: 0.95rem;
    color: rgba(255, 246, 237, 0.92);
}

.diagnosis-form input,
.diagnosis-form textarea {
    width: 100%;
    border-radius: 18px;
    border: 1px solid rgba(255, 244, 232, 0.14);
    background: rgba(255, 249, 241, 0.06);
    color: #fff8f0;
    padding: 14px 16px;
    font: inherit;
}

.diagnosis-form textarea {
    min-height: 132px;
    resize: vertical;
}

.diagnosis-form input::placeholder,
.diagnosis-form textarea::placeholder {
    color: rgba(255, 246, 237, 0.46);
}

.diagnosis-form input:focus,
.diagnosis-form textarea:focus {
    outline: 2px solid rgba(210, 164, 116, 0.28);
    outline-offset: 2px;
}

.form-feedback {
    min-height: 24px;
    margin: 0;
    color: var(--dark-muted);
}

.site-footer {
    padding: 40px 0 58px;
}

.footer-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    border-top: 1px solid var(--line);
    padding-top: 26px;
}

.brand-footer,
.brand-footer span {
    color: var(--ink);
}

.footer-grid p {
    margin: 12px 0 0;
    color: var(--muted);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 18px;
    justify-content: flex-end;
    max-width: 420px;
}

.breadcrumb {
    color: rgba(255, 245, 235, 0.74);
}

.breadcrumb a {
    text-decoration: none;
}

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

.hero-meta .callout {
    box-shadow: none;
}

.content-flow {
    display: grid;
    gap: 24px;
}

.text-flow,
.copy-block {
    display: grid;
    gap: 14px;
}

.text-flow p,
.copy-block p,
.text-flow li,
.feature-list li,
.checklist li,
.panel-list li,
.meta-list li,
.footer-links a,
.definition-list dd {
    color: var(--muted);
}

.definition-list {
    display: grid;
    gap: 16px;
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.54);
    box-shadow: none;
}

.definition-list dt {
    font-weight: 700;
    color: var(--ink);
}

.definition-list dd {
    margin: 6px 0 0;
}

.stat-panel {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.54);
    box-shadow: none;
}

.stat-panel strong {
    display: block;
    font-family: "Noto Serif SC", serif;
    font-size: 2rem;
    margin-bottom: 10px;
}

.contact-card {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.56);
    box-shadow: none;
}

.note {
    margin: 0;
    color: var(--muted);
}

.compact-list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding-left: 18px;
}

.insight-page .insight-hero {
    background:
        radial-gradient(circle at top right, rgba(210, 164, 116, 0.16), transparent 30%),
        radial-gradient(circle at 12% 18%, rgba(255, 244, 232, 0.08), transparent 22%),
        linear-gradient(135deg, rgba(13, 10, 8, 0.96), rgba(35, 29, 24, 0.88)),
        #1b1714;
}

.insight-page .hero-page .hero-grid {
    min-height: 560px;
    align-items: end;
}

.insight-kpis {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.insight-grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    align-items: start;
    gap: 28px;
}

.insight-grid .copy-block {
    padding: 10px 6px 0 0;
}

.insight-grid .copy-block h3 {
    margin-bottom: 8px;
}

.insight-page .article-shell,
.insight-page .stat-panel {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.56);
    box-shadow: none;
}

.insight-page .stat-panel strong {
    font-size: 1.65rem;
    line-height: 1.15;
    margin-bottom: 12px;
}

.insight-page .card-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.insight-page .hero-meta .callout {
    background: rgba(255, 249, 241, 0.08);
    border-color: rgba(255, 244, 232, 0.14);
}

@media (max-width: 980px) {
    .hero,
    .section-dark {
        width: min(100%, calc(100% - 20px));
        border-radius: 26px;
    }

    .hero-grid,
    .two-column,
    .panel-split,
    .cta-layout,
    .service-grid,
    .link-grid,
    .three-column,
    .insight-kpis,
    .insight-grid,
    .footer-grid,
    .hero-intro-grid {
        grid-template-columns: 1fr;
    }

    .insight-page .card-pair {
        grid-template-columns: 1fr;
    }

    .site-nav {
        display: none;
    }

    h1 {
        max-width: 100%;
    }
}

@media (max-width: 640px) {
    .nav-shell,
    .section,
    .site-footer,
    .statement-bar-inner,
    .hero-grid {
        width: min(100%, calc(100% - 24px));
    }

    .hero {
        min-height: auto;
    }

    .hero-grid {
        padding: 52px 0 48px;
    }

    .hero-actions,
    .footer-links {
        flex-direction: column;
        align-items: flex-start;
    }

    .button,
    .nav-cta {
        width: 100%;
    }
}