/* 沉湖鲜 · 企业官网 */
:root {
    /* 沉湖绿 · 湿地生态 */
    --green-950: #051610;
    --green-900: #0a241c;
    --green-800: #0f3d2e;
    --green-700: #1a5c45;
    --green-600: #247a5c;
    --green-500: #3d9a78;
    /* 沉湖红 · LOGO 主色 */
    --brand-red: #9b2d22;
    --brand-red-light: #b5382c;
    --brand-red-dark: #7a2319;
    --brand-red-glow: rgba(155, 45, 34, 0.25);
    /* 香槟金 · 高端点缀 */
    --gold: #c9a962;
    --gold-light: #e8d5a3;
    --gold-dark: #9a7b3a;
    --white: #ffffff;
    --gray-50: #f7f9f8;
    --gray-100: #eef2f0;
    --gray-200: #d8e0dc;
    --gray-500: #6b7c75;
    --gray-700: #3d4a45;
    --text: #1a2420;
    --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
    --font-sans: 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --header-h: 80px;
    --container: 1200px;
    --radius: 12px;
    --shadow: 0 24px 64px rgba(5, 22, 16, 0.12);
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}
body {
    font-family: var(--font-sans);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition), opacity var(--transition); }
ul { list-style: none; }
.container { width: min(100% - 48px, var(--container)); margin: 0 auto; }

/* Header — 颜色由 themes.css 接管 */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: var(--header-h);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: background var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.site-header.is-scrolled {
    box-shadow: var(--t-header-shadow, 0 4px 24px rgba(0,0,0,0.06));
}
.header-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    min-width: 0;
}
.brand-logo-wrap {
    width: 56px; height: 56px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border-radius: 0;
    overflow: visible;
    box-shadow: none;
}
.brand-logo-img {
    width: 56px;
    height: 56px;
    object-fit: contain;
}
.brand-mark {
    width: 44px; height: 44px; border-radius: 10px;
    background: linear-gradient(135deg, var(--green-600), var(--green-800));
    border: 1px solid rgba(201, 169, 98, 0.4);
    position: relative;
}
.brand-mark::after {
    content: '';
    position: absolute; inset: 8px;
    border: 2px solid var(--gold);
    border-radius: 50% 50% 40% 40%;
    opacity: 0.8;
}
.brand-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 3px;
    line-height: 1.2;
    min-width: 0;
}
.brand-text strong {
    font-family: var(--font-serif);
    font-size: 1.28rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    white-space: nowrap;
}
.brand-text small {
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    white-space: nowrap;
    opacity: 0.88;
}
.main-nav {
    display: flex;
    gap: 4px;
    flex: 1;
    justify-content: center;
    min-width: 0;
}
.nav-link {
    padding: 8px 14px;
    font-size: 0.88rem;
    border-radius: 8px;
    letter-spacing: 0.04em;
    white-space: nowrap;
    transition: background var(--transition), color var(--transition);
}
html[data-theme="white"] .site-header.is-scrolled .nav-link:hover,
html[data-theme="white"] .site-header.is-scrolled .nav-link.is-active {
    background: var(--t-accent-soft);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    padding: 0;
    transition: background var(--transition), border-color var(--transition);
}
.nav-toggle:hover {
    background: rgba(255, 255, 255, 0.08);
}
html[data-theme="white"] .site-header.is-scrolled .nav-toggle:hover {
    background: var(--t-accent-soft);
}
.site-header .btn-outline.btn-sm {
    padding: 8px 16px;
    font-size: 0.82rem;
    line-height: 1.2;
}
.nav-toggle span {
    display: block; width: 24px; height: 2px;
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 32px;
    font-size: 0.95rem; font-weight: 500;
    border-radius: 999px;
    border: none; cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.06em;
}
.btn-primary {
    color: var(--white);
}
.btn-outline {
    background: transparent;
}
.btn-sm { padding: 10px 20px; font-size: 0.85rem; }
.btn-outline { border: 1px solid transparent; }
.btn-outline:hover { border-color: inherit; }
.btn-ghost { border: 1px solid transparent; }

/* Hero — 配色由 themes.css */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex; align-items: center;
    padding: calc(var(--header-h) + 60px) 0 80px;
    overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
}
.hero-bg::before {
    content: '';
    position: absolute; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.6;
}
.hero-wave {
    position: absolute; bottom: 0; left: 0; right: 0; height: 120px;
}
.hero-inner { position: relative; z-index: 2; }
.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    margin-bottom: 28px;
}
.hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
}
.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: 0.08em;
    margin-bottom: 24px;
}
.hero-title em {
    font-style: normal;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-lead {
    font-size: 1.1rem;
    max-width: 520px;
    margin-bottom: 40px;
    line-height: 1.9;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-visual {
    position: relative;
    aspect-ratio: 4/5;
    max-height: 560px;
    border-radius: 20px;
    overflow: hidden;
}
.hero-visual-inner {
    position: absolute; inset: 0;
}
.hero-visual-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}
.hero-visual-inner::after {
    content: '沉湖湿地';
    position: absolute; bottom: 32px; left: 32px;
    z-index: 2;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--white);
    letter-spacing: 0.3em;
    pointer-events: none;
}
.hero-stat-float {
    position: absolute;
    padding: 20px 24px;
    border-radius: var(--radius);
    z-index: 3;
}
.hero-stat-float.top { top: 24px; right: -20px; }
.hero-stat-float.bottom { bottom: 80px; left: -24px; }
.hero-stat-float strong {
    display: block;
    font-family: var(--font-serif);
    font-size: 2rem;
    line-height: 1;
    white-space: nowrap;
}
.hero-stat-float span { font-size: 0.8rem; }

/* Stats bar */
.stats-bar {
    margin-top: -40px;
    position: relative;
    z-index: 10;
    border-radius: var(--radius);
    padding: 40px 0;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    text-align: center;
    gap: 24px;
}
.stat-item { position: relative; }
.stat-item:not(:last-child)::after {
    content: '';
    position: absolute; right: 0; top: 15%; height: 70%;
    width: 1px;
}
.stat-num {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    white-space: nowrap;
    line-height: 1;
}
.stat-num small { font-size: 1rem; margin-left: 4px; }
.stat-label { font-size: 0.9rem; margin-top: 8px; }

/* Sections — 配色由 themes.css */
.section { padding: 100px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 64px; }
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    margin-bottom: 16px;
}
.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 600;
    letter-spacing: 0.06em;
    margin-bottom: 16px;
}
.section-desc { font-size: 1.05rem; line-height: 1.85; }

/* Pillars */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.pillar-card {
    border-radius: 16px;
    padding: 40px 32px;
    transition: transform var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}
.pillar-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}
.pillar-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}
.pillar-card:hover::before { transform: scaleX(1); }
.pillar-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 24px;
}
.pillar-card h3 {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    margin-bottom: 6px;
}
.pillar-sub { font-size: 0.75rem; letter-spacing: 0.1em; margin-bottom: 16px; }
.pillar-card p { font-size: 0.95rem; margin-bottom: 20px; }
.pillar-list li {
    font-size: 0.88rem;
    padding: 6px 0 6px 20px;
    position: relative;
}
.pillar-list li::before {
    content: '';
    position: absolute; left: 0; top: 50%;
    width: 6px; height: 6px;
    border-radius: 50%;
    transform: translateY(-50%);
}

/* Brand story */
.story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.story-visual {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 16/11;
    background: linear-gradient(135deg, var(--green-800), var(--green-950));
    border: 1px solid rgba(201,169,98,0.2);
}
.story-visual-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(45deg, rgba(201,169,98,0.15), transparent);
}

/* 湿地图片轮播 */
.wetland-carousel {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--green-950);
    border: 1px solid rgba(201, 169, 98, 0.22);
    box-shadow: var(--shadow);
}
.wetland-carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}
.wetland-carousel-slide {
    position: absolute;
    inset: 0;
    margin: 0;
    opacity: 0;
    transition: opacity 0.7s ease;
    pointer-events: none;
}
.wetland-carousel-slide.is-active {
    opacity: 1;
    pointer-events: auto;
    z-index: 1;
}
.wetland-carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.wetland-carousel-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 48px 24px 40px;
    background: linear-gradient(to top, rgba(5, 22, 16, 0.82), transparent);
    color: #fff;
    font-size: 0.95rem;
    letter-spacing: 0.08em;
}
.wetland-carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    background: rgba(5, 22, 16, 0.45);
    color: #fff;
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
}
.wetland-carousel-btn:hover {
    background: rgba(5, 22, 16, 0.72);
    border-color: rgba(232, 213, 163, 0.6);
}
.wetland-carousel-btn--prev { left: 14px; }
.wetland-carousel-btn--next { right: 14px; }
.wetland-carousel-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 14px;
    z-index: 3;
    display: flex;
    justify-content: center;
    gap: 8px;
}
.wetland-carousel-dot {
    width: 8px;
    height: 8px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.38);
    cursor: pointer;
    transition: transform var(--transition), background var(--transition);
}
.wetland-carousel-dot.is-active {
    background: #e8d5a3;
    transform: scale(1.2);
}
.wetland-carousel.is-paused .wetland-carousel-dot.is-active {
    background: #c9a962;
}
.wetland-carousel--wide {
    aspect-ratio: 16 / 11;
}

.story-content h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: 24px;
    letter-spacing: 0.06em;
}
.story-content p {
    color: rgba(255,255,255,0.72);
    margin-bottom: 20px;
    font-size: 1.02rem;
}
.story-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.story-tag {
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 0.82rem;
}

/* Timeline / values */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.value-card {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius);
}
.value-card strong {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin-bottom: 12px;
}
.value-card span { font-size: 0.88rem; }

/* CTA */
.cta-band {
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-band::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(155, 45, 34, 0.12), transparent 60%);
}
.cta-band h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: 16px;
    position: relative;
}
.cta-band p {
    margin-bottom: 32px;
    position: relative;
}
.cta-band .btn { position: relative; }

/* Page hero (inner pages) */
.page-hero {
    padding: calc(var(--header-h) + 80px) 0 80px;
    background: linear-gradient(165deg, var(--green-950), var(--green-800));
    text-align: center;
}
.page-hero h1 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--white);
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}
.page-hero p {
    color: rgba(255,255,255,0.65);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Content blocks */
.content-block { padding: 80px 0; }
.prose { max-width: 780px; margin: 0 auto; }
.prose h2 {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    margin: 48px 0 20px;
}
.prose h2:first-child { margin-top: 0; }
.prose p { margin-bottom: 18px; font-size: 1.02rem; }
.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-top: 48px;
}
.feature-box {
    padding: 32px;
    border-radius: var(--radius);
}
.feature-box h3 {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    margin-bottom: 12px;
}
.feature-box p { font-size: 0.95rem; margin: 0; }

/* Trace flow */
.flow-steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-top: 48px;
}
.flow-step {
    text-align: center;
    padding: 28px 16px;
    border-radius: var(--radius);
    position: relative;
}
.flow-step-num {
    width: 40px; height: 40px;
    margin: 0 auto 16px;
    border-radius: 50%;
    color: var(--white);
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-serif);
    font-weight: 600;
}
.flow-step h4 { font-size: 0.95rem; margin-bottom: 8px; }
.flow-step p { font-size: 0.8rem; }

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}
.contact-card {
    padding: 40px;
    border-radius: 16px;
}
.contact-card h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    margin-bottom: 24px;
}
.contact-item {
    display: flex; gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--gray-100);
}
.contact-item:last-child { border-bottom: none; }
.contact-item strong { min-width: 80px; font-weight: 500; }

/* Footer */
.site-footer { color: rgba(255,255,255,0.7); }
.footer-top { padding: 72px 0 48px; }
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 48px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 12px;
}
.footer-logo img {
    width: 52px;
    height: 52px;
    object-fit: contain;
    background: transparent;
}
.footer-logo-red { display: none; }
.footer-logo-white { display: block; }
html[data-theme="white"] .footer-logo-red { display: block; }
html[data-theme="white"] .footer-logo-white { display: none; }
html[data-theme="red"] .footer-logo-red { display: none; }
html[data-theme="red"] .footer-logo-white { display: block; }
.footer-logo-text {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--white);
    letter-spacing: 0.15em;
}
.footer-tagline { font-size: 0.85rem; margin-bottom: 16px; }
.footer-desc { font-size: 0.9rem; line-height: 1.8; max-width: 320px; }
.footer-col h4 {
    font-size: 0.85rem;
    color: var(--white);
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col a:hover { color: var(--brand-red-light); }
.footer-contact li { font-size: 0.88rem; margin-bottom: 12px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 24px 0;
}
.footer-bottom-inner {
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
    font-size: 0.82rem;
}
.footer-bottom a:hover { color: var(--brand-red-light); }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid, .story-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { max-height: 420px; max-width: 520px; margin: 0 auto; width: 100%; }
    .pillars-grid, .values-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-item:nth-child(2)::after { display: none; }
    .flow-steps { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-col--about { display: none; }
    .section-head { margin-bottom: 48px; }
}

@media (max-width: 992px) {
    :root { --header-h: 60px; }

    .container { width: min(100% - 32px, var(--container)); }
    .header-inner { padding: 0 16px; gap: 12px; }
    .brand { gap: 10px; min-width: 0; }
    .brand-logo-wrap, .brand-logo-img { width: 42px; height: 42px; }
    .brand-text strong { font-size: 1.08rem; letter-spacing: 0.1em; }
    .brand-text small { font-size: 0.62rem; letter-spacing: 0.05em; }

    .main-nav {
        display: none;
        flex: none;
        justify-content: flex-start;
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        max-height: calc(100dvh - var(--header-h));
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        flex-direction: column;
        align-items: stretch;
        padding: 12px 16px 20px;
        gap: 2px;
        z-index: 999;
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
        border-bottom: 1px solid var(--t-header-border, rgba(0, 0, 0, 0.08));
    }
    .main-nav.is-open { display: flex; }
    .nav-link {
        padding: 14px 16px;
        font-size: 1rem;
        border-radius: 8px;
        white-space: normal;
    }
    .nav-link--mall { display: flex; }
    .nav-toggle { display: flex; z-index: 1001; }
    .site-header .header-actions .btn-outline.btn-sm { display: none; }

    .hero {
        min-height: auto;
        padding: calc(var(--header-h) + 32px) 0 56px;
    }
    .hero-grid { gap: 32px; }
    .hero-title { letter-spacing: 0.05em; margin-bottom: 16px; }
    .hero-lead { font-size: 1rem; margin-bottom: 28px; line-height: 1.85; }
    .hero-badge { font-size: 0.72rem; padding: 6px 14px; margin-bottom: 20px; }
    .hero-actions { gap: 12px; }
    .hero-actions .btn { flex: 1 1 auto; min-width: 140px; justify-content: center; }
    .hero-visual-inner::after {
        left: 16px;
        bottom: 16px;
        font-size: 1.05rem;
        letter-spacing: 0.15em;
        padding: 6px 10px;
        border-radius: 6px;
        background: rgba(5, 22, 16, 0.45);
    }

    .page-hero {
        padding: calc(var(--header-h) + 40px) 0 48px;
    }
    .page-hero h1 { letter-spacing: 0.06em; }
    .content-block { padding: 56px 0; }
}

@media (max-width: 768px) {
    .section { padding: 56px 0; }
    .section-head { margin-bottom: 36px; }
    .section-title { letter-spacing: 0.04em; }

    .stats-bar {
        margin-top: -24px;
        padding: 28px 16px;
        border-radius: 10px;
    }
    .stat-num { font-size: 2rem; }
    .stat-label { font-size: 0.85rem; }

    .pillars-grid, .values-grid, .feature-grid, .flow-steps { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px 16px; }
    .stat-item:nth-child(2)::after { display: none; }
    .stat-item::after { display: none !important; }

    .pillar-card { padding: 28px 24px; }
    .hero-visual { overflow: hidden; }
    .hero-stat-float {
        display: block;
        padding: 12px 14px;
        max-width: calc(100% - 24px);
    }
    .hero-stat-float.top {
        top: 12px;
        right: 12px;
        left: auto;
    }
    .hero-stat-float.bottom {
        bottom: 16px;
        left: 12px;
        right: auto;
    }
    .hero-stat-float strong { font-size: 1.55rem; }
    .hero-stat-float strong small { font-size: 0.82rem !important; }
    .hero-stat-float span { font-size: 0.72rem; line-height: 1.35; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-top { padding: 48px 0 32px; }
    .footer-logo-text { font-size: 1.5rem; }

    .story-grid { gap: 32px; }
    .story-content h2 { font-size: 1.6rem; }

    .contact-grid { gap: 24px; }
    .contact-card { padding: 28px 24px; }
    .contact-item {
        flex-direction: column;
        gap: 6px;
        padding: 14px 0;
    }
    .contact-item strong { min-width: 0; font-size: 0.85rem; }
    .contact-item span,
    .contact-item a { word-break: break-word; }

    .flow-steps { gap: 12px; }
    .flow-step { padding: 22px 14px; }

    .cta-band { padding: 56px 0; }
    .cta-band h2 { font-size: 1.6rem; }
    .cta-band .btn { width: 100%; max-width: 280px; }

    .wetland-carousel-btn {
        width: 36px;
        height: 36px;
        font-size: 1.2rem;
    }
    .wetland-carousel-btn--prev { left: 10px; }
    .wetland-carousel-btn--next { right: 10px; }
    .wetland-carousel-caption {
        font-size: 0.85rem;
        padding: 40px 16px 36px;
    }

    .eco-highlight { padding: 28px 24px !important; }
    .eco-highlight h3 { font-size: 1.25rem !important; }

    .values-grid.theme-values { padding: 28px 20px !important; border-radius: 14px !important; }

    .btn { padding: 12px 24px; font-size: 0.9rem; }
    .btn-sm { padding: 10px 18px; font-size: 0.82rem; }
}

@media (max-width: 480px) {
    :root { --header-h: 56px; }

    .container { width: min(100% - 24px, var(--container)); }
    .header-inner { padding: 0 12px; gap: 8px; }
    .brand-logo-wrap, .brand-logo-img { width: 38px; height: 38px; }
    .brand-text strong { font-size: 1rem; letter-spacing: 0.08em; }
    .brand-text small { font-size: 0.58rem; }

    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; min-width: 0; }

    .hero-title { font-size: clamp(1.85rem, 8vw, 2.5rem); }
    .hero-visual { max-height: 320px; border-radius: 14px; }

    .section { padding: 48px 0; }
    .content-block { padding: 48px 0; }
    .page-hero { padding: calc(var(--header-h) + 32px) 0 40px; }
    .page-hero h1 { font-size: clamp(1.65rem, 7vw, 2.2rem); }

    .stats-bar { margin-top: -16px; padding: 24px 12px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px 12px; }
    .stat-num { font-size: 1.65rem; }

    .pillar-card h3 { font-size: 1.15rem; }
    .footer-bottom-inner { flex-direction: column; align-items: flex-start; }
}

/* 桌面端隐藏移动端专用导航项 */
.nav-link--mall { display: none; }

body.nav-open { overflow: hidden; }