/* ===== 全局变量 ===== */
:root {
    --green-900: #1a3a1f;
    --green-700: #2d6a3e;
    --green-600: #3a8a4e;
    --green-500: #4caf50;
    --green-100: #e8f5e9;
    --green-50: #f5fbf6;
    --leaf: #7cb342;
    --earth: #8d6e63;
    --gold: #f9a825;
    --ink: #1f2d27;
    --text: #3d4a3f;
    --muted: #7a8a7e;
    --line: #e3ebe4;
    --bg: #fafdfb;
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(45, 106, 62, 0.06);
    --shadow-md: 0 8px 24px rgba(45, 106, 62, 0.10);
    --shadow-lg: 0 16px 48px rgba(45, 106, 62, 0.14);
    --radius: 14px;
    --radius-sm: 8px;
    --radius-lg: 24px;
    --transition: all .3s cubic-bezier(.4,0,.2,1);
}

/* ===== 重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, var(--green-600), var(--green-700));
    color: #fff;
    box-shadow: 0 6px 18px rgba(58, 138, 78, 0.32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(58, 138, 78, 0.42); }
.btn-outline {
    background: transparent;
    color: var(--green-700);
    border: 2px solid var(--green-600);
}
.btn-outline:hover { background: var(--green-600); color: #fff; }
.btn-ghost { background: rgba(255,255,255,.9); color: var(--green-700); }
.btn-ghost:hover { background: #fff; transform: translateY(-2px); }

/* ===== 顶部导航 ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}
.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo-icon {
    font-size: 34px;
    filter: drop-shadow(0 2px 4px rgba(124,179,66,.4));
}
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text strong { font-size: 20px; color: var(--green-900); letter-spacing: 1px; }
.logo-text small { font-size: 10px; color: var(--muted); letter-spacing: 2px; }
.nav { display: flex; gap: 6px; }
.nav a {
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
}
.nav a:hover { background: var(--green-100); color: var(--green-700); }
.nav a.active { background: var(--green-600); color: #fff; }
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--green-700);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== 通用区块 ===== */
.section { padding: 80px 0; }
.section-tight { padding: 48px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--green-100);
    color: var(--green-700);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--ink);
    line-height: 1.3;
    margin-bottom: 16px;
}
.section-sub { color: var(--muted); font-size: 16px; }
.text-green { color: var(--green-600); }

/* ===== 首页 Hero ===== */
.hero {
    position: relative;
    padding: 100px 0 120px;
    background:
        radial-gradient(circle at 85% 15%, rgba(124,179,66,.18), transparent 50%),
        radial-gradient(circle at 10% 90%, rgba(58,138,78,.15), transparent 50%),
        linear-gradient(160deg, #f5fbf6 0%, #e8f5e9 100%);
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(76,175,80,.08) 0, transparent 8%),
        radial-gradient(circle at 70% 60%, rgba(124,179,66,.08) 0, transparent 8%),
        radial-gradient(circle at 40% 80%, rgba(76,175,80,.06) 0, transparent 8%);
    background-size: 60px 60px;
    pointer-events: none;
}
.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(255,255,255,.7);
    border: 1px solid var(--green-100);
    border-radius: 50px;
    font-size: 13px;
    color: var(--green-700);
    font-weight: 600;
    margin-bottom: 24px;
}
.hero-badge .dot { width: 8px; height: 8px; background: var(--green-500); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:.4;} }
.hero h1 {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.15;
    color: var(--ink);
    margin-bottom: 24px;
    letter-spacing: -1px;
}
.hero h1 .accent {
    background: linear-gradient(120deg, var(--green-600), var(--leaf));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero p.lead {
    font-size: 18px;
    color: var(--muted);
    margin-bottom: 36px;
    max-width: 540px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 56px;
    padding-top: 36px;
    border-top: 1px solid rgba(45,106,62,.12);
}
.hero-stat .num {
    font-size: 32px;
    font-weight: 800;
    color: var(--green-700);
    line-height: 1;
}
.hero-stat .label { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* Hero 视觉卡片 */
.hero-visual {
    position: relative;
    height: 460px;
}
.hero-card {
    position: absolute;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 20px;
    transition: var(--transition);
}
.hero-card-main {
    inset: 0 0 0 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(160deg, #4caf50, #2d6a3e);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: #fff;
    padding: 32px;
}
.hero-card-main .emoji { font-size: 120px; line-height: 1; align-self: flex-end; filter: drop-shadow(0 8px 16px rgba(0,0,0,.2)); }
.hero-card-main .tag { font-size: 12px; opacity: .8; letter-spacing: 2px; }
.hero-card-main h3 { font-size: 26px; font-weight: 700; }
.hero-card-float {
    position: absolute;
    bottom: -24px;
    left: -32px;
    width: 220px;
    animation: float 4s ease-in-out infinite;
}
.hero-card-float .row { display: flex; align-items: center; gap: 12px; }
.hero-card-float .icon {
    width: 44px; height: 44px;
    background: var(--green-100);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
}
.hero-card-float .txt strong { display: block; color: var(--ink); font-size: 14px; }
.hero-card-float .txt small { color: var(--muted); font-size: 12px; }
.hero-card-trace {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 180px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 14px 16px;
    animation: float 5s ease-in-out infinite reverse;
}
.hero-card-trace .label { font-size: 11px; color: var(--muted); }
.hero-card-trace .code { font-size: 16px; font-weight: 700; color: var(--green-700); margin: 4px 0; }
.hero-card-trace .bar { height: 6px; background: var(--green-100); border-radius: 4px; overflow: hidden; }
.hero-card-trace .bar i { display: block; height: 100%; width: 86%; background: linear-gradient(90deg, var(--green-500), var(--leaf)); }
@keyframes float { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-12px);} }

/* ===== 亮点卡片 ===== */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--line);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--green-500), var(--leaf));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}
.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.feature:hover::before { transform: scaleX(1); }
.feature .icon {
    width: 56px; height: 56px;
    border-radius: 16px;
    background: var(--green-100);
    display: flex; align-items: center; justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}
.feature h3 { font-size: 19px; color: var(--ink); margin-bottom: 10px; }
.feature p { font-size: 14px; color: var(--muted); }

/* ===== 产品卡片 ===== */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--line);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-thumb {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    position: relative;
}
.product-thumb.tomato { background: linear-gradient(135deg, #ffe5e5, #ffcdd2); }
.product-thumb.strawberry { background: linear-gradient(135deg, #ffe0eb, #f8bbd0); }
.product-thumb.rice { background: linear-gradient(135deg, #fff8e1, #ffecb3); }
.product-thumb.lettuce { background: linear-gradient(135deg, #e8f5e9, #c8e6c9); }
.product-thumb.egg { background: linear-gradient(135deg, #fff3e0, #ffe0b2); }
.product-thumb.blueberry { background: linear-gradient(135deg, #e3f2fd, #bbdefb); }
.product-thumb.default { background: linear-gradient(135deg, var(--green-100), #d7ecd9); }
.product-thumb .cat {
    position: absolute;
    top: 14px; left: 14px;
    padding: 4px 12px;
    background: rgba(255,255,255,.9);
    border-radius: 50px;
    font-size: 12px;
    color: var(--green-700);
    font-weight: 600;
}
.product-thumb .trace-icon {
    position: absolute;
    top: 14px; right: 14px;
    width: 36px; height: 36px;
    background: rgba(255,255,255,.9);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
}
.product-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.product-body h3 { font-size: 19px; color: var(--ink); margin-bottom: 6px; }
.product-body .origin { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.product-body .desc { font-size: 14px; color: var(--text); margin-bottom: 16px; flex: 1; }
.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--line);
}
.product-price { font-size: 18px; font-weight: 800; color: var(--green-700); }
.product-price small { font-size: 12px; font-weight: 400; color: var(--muted); }
.product-link { font-size: 13px; color: var(--green-700); font-weight: 600; }
.product-link:hover { gap: 12px; }

/* ===== 溯源页面 ===== */
.trace-hero {
    background: linear-gradient(160deg, var(--green-700), var(--green-900));
    color: #fff;
    padding: 80px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.trace-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 20%, rgba(255,255,255,.06) 0, transparent 6%),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,.06) 0, transparent 6%);
    background-size: 80px 80px;
}
.trace-hero h1 { font-size: 42px; font-weight: 800; margin-bottom: 16px; position: relative; }
.trace-hero p { opacity: .9; font-size: 17px; margin-bottom: 36px; position: relative; }
.trace-search {
    position: relative;
    max-width: 640px;
    margin: 0 auto;
    background: #fff;
    border-radius: 50px;
    padding: 8px;
    display: flex;
    box-shadow: var(--shadow-lg);
}
.trace-search input {
    flex: 1;
    border: none;
    outline: none;
    padding: 14px 24px;
    font-size: 16px;
    background: transparent;
    color: var(--text);
}
.trace-search button {
    padding: 12px 32px;
    border: none;
    background: linear-gradient(135deg, var(--green-600), var(--green-700));
    color: #fff;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.trace-search button:hover { transform: scale(1.03); }
.trace-tip { margin-top: 18px; font-size: 13px; opacity: .8; position: relative; }
.trace-tip code { background: rgba(255,255,255,.15); padding: 2px 8px; border-radius: 4px; }

.trace-result {
    max-width: 720px;
    margin: -40px auto 0;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 24px;
    display: none;
}
.trace-result.show { display: block; }
.trace-result .empty { text-align: center; padding: 32px; color: var(--muted); }

/* 溯源时间线 */
.trace-timeline {
    position: relative;
    padding-left: 40px;
}
.trace-timeline::before {
    content: "";
    position: absolute;
    left: 14px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--green-500), var(--green-100));
}
.trace-step {
    position: relative;
    padding-bottom: 28px;
}
.trace-step:last-child { padding-bottom: 0; }
.trace-step::before {
    content: "";
    position: absolute;
    left: -33px;
    top: 4px;
    width: 16px; height: 16px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--green-500);
    box-shadow: 0 0 0 4px var(--green-100);
}
.trace-step .stage {
    display: inline-block;
    padding: 4px 12px;
    background: var(--green-100);
    color: var(--green-700);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 8px;
}
.trace-step h4 { font-size: 16px; color: var(--ink); margin-bottom: 4px; }
.trace-step .meta { font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.trace-step .meta span { margin-right: 16px; }
.trace-step .note { font-size: 14px; color: var(--text); background: var(--green-50); padding: 10px 14px; border-radius: var(--radius-sm); border-left: 3px solid var(--leaf); }

/* ===== 信息块 ===== */
.info-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.info-block.reverse .info-visual { order: 2; }
.info-visual {
    height: 380px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 140px;
    position: relative;
    overflow: hidden;
}
.info-visual.v1 { background: linear-gradient(135deg, #e8f5e9, #a5d6a7); }
.info-visual.v2 { background: linear-gradient(135deg, #fff8e1, #ffcc80); }
.info-visual.v3 { background: linear-gradient(135deg, #e3f2fd, #90caf9); }
.info-visual.v4 { background: linear-gradient(135deg, #f3e5f5, #ce93d8); }
.info-content .section-tag { margin-bottom: 12px; }
.info-content h2 { font-size: 32px; color: var(--ink); margin-bottom: 18px; line-height: 1.3; }
.info-content p { color: var(--muted); margin-bottom: 16px; }
.info-list { list-style: none; margin-top: 20px; }
.info-list li {
    padding: 10px 0 10px 32px;
    position: relative;
    color: var(--text);
}
.info-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 10px;
    width: 22px; height: 22px;
    background: var(--green-500);
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px;
    font-weight: 700;
}

/* ===== 数据统计 ===== */
.stats-band {
    background: linear-gradient(135deg, var(--green-700), var(--green-900));
    color: #fff;
    padding: 60px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item .num { font-size: 44px; font-weight: 800; line-height: 1; }
.stat-item .num small { font-size: 20px; opacity: .8; }
.stat-item .label { margin-top: 10px; opacity: .85; font-size: 14px; }

/* ===== CTA ===== */
.cta {
    background: linear-gradient(135deg, var(--green-100), #d7ecd9);
    border-radius: var(--radius-lg);
    padding: 56px;
    text-align: center;
    margin: 80px 0;
}
.cta h2 { font-size: 32px; color: var(--ink); margin-bottom: 12px; }
.cta p { color: var(--muted); margin-bottom: 28px; }

/* ===== 页面横幅 ===== */
.page-banner {
    background: linear-gradient(160deg, var(--green-100), #d7ecd9);
    padding: 60px 0;
    text-align: center;
}
.page-banner h1 { font-size: 38px; color: var(--ink); margin-bottom: 12px; }
.page-banner p { color: var(--muted); font-size: 16px; }
.breadcrumb { font-size: 13px; color: var(--muted); margin-top: 16px; }
.breadcrumb a:hover { color: var(--green-700); }

/* ===== 筛选 ===== */
.filter-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 40px;
}
.filter-bar a {
    padding: 8px 22px;
    border-radius: 50px;
    background: #fff;
    border: 1px solid var(--line);
    color: var(--text);
    font-size: 14px;
    font-weight: 500;
}
.filter-bar a:hover, .filter-bar a.active { background: var(--green-600); color: #fff; border-color: var(--green-600); }

/* ===== 详情页 ===== */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.detail-visual {
    height: 420px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 180px;
    box-shadow: var(--shadow-md);
}
.detail-info h1 { font-size: 32px; color: var(--ink); margin-bottom: 8px; }
.detail-info .trace-code {
    display: inline-block;
    padding: 6px 14px;
    background: var(--green-100);
    color: var(--green-700);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}
.detail-info .desc { color: var(--muted); margin-bottom: 24px; font-size: 16px; }
.detail-params {
    background: var(--green-50);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 24px;
}
.detail-params .row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed var(--line);
}
.detail-params .row:last-child { border-bottom: none; }
.detail-params .row .k { color: var(--muted); }
.detail-params .row .v { color: var(--ink); font-weight: 600; }
.cert-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.cert-badge {
    padding: 6px 14px;
    background: #fff;
    border: 1px solid var(--leaf);
    color: var(--green-700);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
}

/* ===== 联系页 ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--line);
}
.contact-item { display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-item:last-child { border-bottom: none; }
.contact-item .icon {
    width: 48px; height: 48px;
    background: var(--green-100);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}
.contact-item .k { font-size: 13px; color: var(--muted); }
.contact-item .v { font-size: 16px; color: var(--ink); font-weight: 600; margin-top: 2px; }
.contact-form .field { margin-bottom: 18px; }
.contact-form label { display: block; font-size: 14px; color: var(--text); margin-bottom: 6px; font-weight: 500; }
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--green-500); box-shadow: 0 0 0 3px var(--green-100); }
.contact-form textarea { resize: vertical; min-height: 120px; }

/* ===== 基地卡片 ===== */
.base-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.base-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--line);
    transition: var(--transition);
}
.base-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.base-banner {
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 100px;
}
.base-banner.b1 { background: linear-gradient(135deg, #e8f5e9, #81c784); }
.base-banner.b2 { background: linear-gradient(135deg, #ffe0eb, #f48fb1); }
.base-banner.b3 { background: linear-gradient(135deg, #fff8e1, #ffb74d); }
.base-banner.b4 { background: linear-gradient(135deg, #e3f2fd, #64b5f6); }
.base-body { padding: 28px; }
.base-body h3 { font-size: 22px; color: var(--ink); margin-bottom: 10px; }
.base-body p { color: var(--muted); margin-bottom: 16px; }
.base-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.base-tag { padding: 4px 12px; background: var(--green-50); color: var(--green-700); border-radius: 50px; font-size: 12px; font-weight: 600; }

/* ===== 团队/历程 ===== */
.timeline-h { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.timeline-h-item {
    background: #fff;
    border-radius: var(--radius);
    padding: 24px;
    border-top: 4px solid var(--green-500);
    box-shadow: var(--shadow-sm);
}
.timeline-h-item .year { font-size: 28px; font-weight: 800; color: var(--green-700); margin-bottom: 8px; }
.timeline-h-item h4 { font-size: 16px; color: var(--ink); margin-bottom: 6px; }
.timeline-h-item p { font-size: 13px; color: var(--muted); }

/* ===== 404 ===== */
.error-page { text-align: center; padding: 120px 0; }
.error-page .code { font-size: 120px; font-weight: 900; color: var(--green-100); line-height: 1; }
.error-page h1 { font-size: 28px; color: var(--ink); margin: 16px 0; }
.error-page p { color: var(--muted); margin-bottom: 24px; }

/* ===== 页脚 ===== */
.footer { background: var(--green-900); color: rgba(255,255,255,.85); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer-col a, .footer-col p { display: block; color: rgba(255,255,255,.7); font-size: 14px; margin-bottom: 10px; }
.footer-col a:hover { color: var(--leaf); }
.footer-desc { line-height: 1.8; }
.logo-footer .logo-text strong { color: #fff; }
.logo-footer .logo-text small { color: rgba(255,255,255,.5); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,.5);
}

/* ===== 响应式 ===== */
@media (max-width: 960px) {
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { height: 360px; }
    .hero h1 { font-size: 40px; }
    .features, .products-grid, .stats-grid, .timeline-h { grid-template-columns: repeat(2, 1fr); }
    .info-block, .detail-grid, .contact-grid, .base-grid { grid-template-columns: 1fr; gap: 32px; }
    .info-block.reverse .info-visual { order: 0; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .section-title { font-size: 28px; }
}
@media (max-width: 640px) {
    .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px; box-shadow: var(--shadow-md); border-top: 1px solid var(--line); }
    .nav.open { display: flex; }
    .nav-toggle { display: flex; }
    .features, .products-grid, .stats-grid, .timeline-h, .footer-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 32px; }
    .hero-stats { gap: 24px; flex-wrap: wrap; }
    .section { padding: 56px 0; }
    .cta { padding: 36px 24px; margin: 48px 0; }
    .container { padding: 0 16px; }
}

/* ===== 图片适配（本地图片文件） ===== */
/* 产品卡片缩略图 */
.product-thumb { position: relative; overflow: hidden; }
.product-thumb img {
    width: 100%; height: 100%;
    object-fit: cover;
    position: absolute; inset: 0;
    transition: transform .5s ease;
}
.product-card:hover .product-thumb img { transform: scale(1.08); }
.product-thumb .cat,
.product-thumb .trace-icon { z-index: 2; }

/* 产品详情页大图 */
.detail-visual { position: relative; overflow: hidden; }
.detail-visual img {
    width: 100%; height: 100%;
    object-fit: cover;
    position: absolute; inset: 0;
}

/* 基地横幅图 */
.base-banner { position: relative; overflow: hidden; }
.base-banner img {
    width: 100%; height: 100%;
    object-fit: cover;
    position: absolute; inset: 0;
    transition: transform .5s ease;
}
.base-card:hover .base-banner img { transform: scale(1.06); }

/* 信息区装饰图 */
.info-visual { position: relative; overflow: hidden; }
.info-visual img {
    width: 100%; height: 100%;
    object-fit: cover;
    position: absolute; inset: 0;
}
.info-visual .info-emoji {
    position: relative; z-index: 2;
    font-size: 140px;
    filter: drop-shadow(0 8px 16px rgba(0,0,0,.15));
}

/* 首页 Hero 主卡片背景图 */
.hero-card-main.has-bg {
    background-size: cover;
    background-position: center;
    position: relative;
}
.hero-card-main.has-bg::before {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(160deg, rgba(45,106,62,.82), rgba(26,58,31,.72));
    border-radius: var(--radius-lg);
}
.hero-card-main.has-bg > * { position: relative; z-index: 2; }
.hero-card-main.has-bg .emoji { display: none; }

/* 图片加载失败占位（onerror 时给容器加 .no-img） */
.product-thumb.no-img, .detail-visual.no-img,
.base-banner.no-img, .info-visual.no-img { background: linear-gradient(135deg, var(--green-100), #d7ecd9); }