/* ==========================================================================
   化肥出口公司独立站 - 空白框架样式表
   说明:所有 [方括号占位符] 均为待替换内容,替换后即为成品站点
   配色:农业绿 + 大地色系(可按品牌色修改 CSS 变量)
   ========================================================================== */

/* ---- CSS 变量(品牌色/字号/间距统一管理) ---- */
:root {
  --color-primary: #2e7d32;
  --color-primary-dark: #1b5e20;
  --color-primary-light: #66bb6a;
  --color-accent: #f9a825;
  --color-soil: #5d4037;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7f2;
  --color-text: #212121;
  --color-text-muted: #5f6368;
  --color-border: #e0e3de;
  --color-white: #ffffff;
  --color-dark: #0d1f12;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  --container-max: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
  --transition: 0.25s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-sans); color: var(--color-text); background-color: var(--color-bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary); }
ul { list-style: none; }

.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section--alt { background-color: var(--color-bg-alt); }
.section--dark { background-color: var(--color-dark); color: var(--color-white); }
.section__head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section__eyebrow { display: inline-block; font-size: 0.875rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-primary); margin-bottom: 12px; }
.section__title { font-size: clamp(1.75rem, 3vw, 2.5rem); line-height: 1.2; font-weight: 700; margin-bottom: 16px; }
.section__subtitle { font-size: 1.0625rem; color: var(--color-text-muted); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 28px; font-size: 1rem; font-weight: 600; border-radius: var(--radius-sm); border: 2px solid transparent; cursor: pointer; transition: all var(--transition); white-space: nowrap; }
.btn--primary { background-color: var(--color-primary); color: var(--color-white); }
.btn--primary:hover { background-color: var(--color-primary-dark); color: var(--color-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--outline { background-color: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn--outline:hover { background-color: var(--color-primary); color: var(--color-white); }
.btn--light { background-color: var(--color-white); color: var(--color-primary-dark); }
.btn--light:hover { background-color: var(--color-bg-alt); }
.btn--lg { padding: 16px 36px; font-size: 1.0625rem; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background-color: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--color-border); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.site-logo { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 700; color: #1a1a1a; }
.site-logo__mark { width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); display: grid; place-items: center; color: var(--color-white); font-size: 1.125rem; }
.site-nav { display: flex; align-items: center; gap: 32px; }
.site-nav a { font-weight: 500; color: var(--color-text); position: relative; }
.site-nav a:hover, .site-nav a.is-active { color: var(--color-primary); }
.site-nav a.is-active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; background-color: var(--color-primary); border-radius: 2px; }
.site-nav__cta { margin-left: 8px; color: #ffffff !important; }
.site-nav__cta:hover { color: #ffffff !important; }
.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-color: var(--color-text); transition: var(--transition); }

/* Hero */
.hero { position: relative; padding: 128px 0; background-color: var(--color-dark); color: var(--color-white); background-size: cover; background-position: center; background-repeat: no-repeat; }
.hero__inner { display: grid; grid-template-columns: 1fr; gap: 0; align-items: center; }
.hero__text { max-width: 720px; }
.hero__eyebrow { display: inline-block; padding: 6px 16px; border: 1px solid rgba(255, 255, 255, 0.4); border-radius: 999px; font-size: 0.8125rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 24px; }
.hero__title { font-size: clamp(2.25rem, 5vw, 3.75rem); line-height: 1.1; font-weight: 800; margin-bottom: 24px; letter-spacing: -0.01em; }
.hero__subtitle { font-size: clamp(1rem, 2vw, 1.25rem); color: rgba(255, 255, 255, 0.88); margin-bottom: 40px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__image-frame { min-height: 460px; border-radius: var(--radius-lg); border: 2px dashed rgba(255, 255, 255, 0.35); background-color: rgba(255, 255, 255, 0.06); display: grid; place-items: center; text-align: center; color: rgba(255, 255, 255, 0.7); font-size: 0.9375rem; padding: 32px; position: relative; overflow: hidden; }
.hero__image-frame::before { content: "🖼"; font-size: 2.5rem; display: block; margin-bottom: 12px; opacity: 0.6; }

/* Features */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 32px; }
.feature-card { background-color: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 36px 28px; transition: var(--transition); }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-primary-light); }
.feature-card__icon { width: 56px; height: 56px; border-radius: var(--radius-md); background-color: var(--color-bg-alt); color: var(--color-primary); display: grid; place-items: center; font-size: 1.5rem; margin-bottom: 20px; }
.feature-card__title { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.feature-card__list { color: var(--color-text-muted); }
.feature-card__list li { position: relative; padding-left: 22px; margin-bottom: 8px; }
.feature-card__list li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 8px; border-radius: 50%; background-color: var(--color-primary-light); }

/* Live Price */
.price-box { max-width: 560px; margin: 0 auto; background-color: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 48px 36px; text-align: center; box-shadow: var(--shadow-md); }
.price-box__label { font-size: 0.8125rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: 16px; }
.price-box__value { font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 800; color: var(--color-primary); line-height: 1; }
.price-box__unit { font-size: 1.125rem; color: var(--color-text-muted); margin-top: 8px; }
.price-box__note { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--color-border); color: var(--color-text-muted); font-size: 0.9375rem; }

/* Distribution */
.distribution { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.distribution__visual { background-color: var(--color-bg-alt); border-radius: var(--radius-lg); min-height: 360px; display: grid; place-items: center; border: 1px solid var(--color-border); color: var(--color-text-muted); font-size: 0.9375rem; }
.ports-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 24px; }
.port-item { padding: 20px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background-color: var(--color-bg); }
.port-item__city { font-weight: 700; font-size: 1.125rem; }
.port-item__status { font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-primary); margin-top: 4px; }
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px; margin-top: 56px; }
.stat { text-align: center; padding: 28px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background-color: var(--color-bg); }
.stat__num { font-size: 2.25rem; font-weight: 800; color: var(--color-primary); line-height: 1; }
.stat__label { color: var(--color-text-muted); margin-top: 8px; font-size: 0.9375rem; }

/* Product Categories */
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; }
.product-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: 420px; display: flex; flex-direction: column; justify-content: flex-end; color: var(--color-white); background: linear-gradient(180deg, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 0.75) 100%), var(--color-soil); }
.product-card__content { padding: 32px; }
.product-card__title { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
.product-card__desc { color: rgba(255, 255, 255, 0.85); margin-bottom: 20px; }

/* Testimonials */
.testimonials { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.testimonial { background-color: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 32px 28px; }
.testimonial__quote { font-size: 1.0625rem; line-height: 1.6; margin-bottom: 24px; color: var(--color-text); }
.testimonial__author { display: flex; align-items: center; gap: 12px; }
.testimonial__avatar { width: 44px; height: 44px; border-radius: 50%; background-color: var(--color-primary-light); color: var(--color-white); display: grid; place-items: center; font-weight: 700; }
.testimonial__name { font-weight: 600; }
.testimonial__meta { font-size: 0.875rem; color: var(--color-text-muted); }

/* Community */
.community { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.community__badge { display: inline-block; padding: 8px 20px; border-radius: 999px; background-color: rgba(255, 255, 255, 0.15); font-size: 0.8125rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 20px; }
.community__title { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 700; margin-bottom: 16px; }
.community__desc { color: rgba(255, 255, 255, 0.85); margin-bottom: 28px; }

/* CTA Final */
.cta-final { text-align: center; padding: 96px 0; background: linear-gradient(180deg, rgba(13, 31, 18, 0.85), rgba(13, 31, 18, 0.95)), url("../images/cta-bg.jpg") center/cover no-repeat; color: var(--color-white); }
.cta-final__title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 16px; }
.cta-final__desc { color: rgba(255, 255, 255, 0.88); margin-bottom: 36px; max-width: 620px; margin-left: auto; margin-right: auto; }

/* Footer */
.site-footer { background-color: var(--color-dark); color: rgba(255, 255, 255, 0.75); padding: 64px 0 32px; }
.site-footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.site-footer__brand .site-logo { color: var(--color-white); margin-bottom: 16px; }
.site-footer__about { font-size: 0.9375rem; margin-bottom: 20px; }
.site-footer__col h4 { color: var(--color-white); font-size: 1rem; margin-bottom: 16px; }
.site-footer__col ul li { margin-bottom: 10px; }
.site-footer__col a:hover { color: var(--color-white); }
.site-footer__bottom { border-top: 1px solid rgba(255, 255, 255, 0.15); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.875rem; }

/* Page Hero (内页头部) */
.page-hero { padding: 96px 0 64px; background-color: var(--color-bg-alt); text-align: center; border-bottom: 1px solid var(--color-border); }
.page-hero__title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 12px; }
.page-hero__breadcrumb { font-size: 0.875rem; color: var(--color-text-muted); }
.page-hero__breadcrumb a:hover { color: var(--color-primary); }

/* About */
.story { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.story__image { border-radius: var(--radius-lg); background-color: var(--color-bg-alt); min-height: 420px; border: 1px solid var(--color-border); display: grid; place-items: center; color: var(--color-text-muted); }
.values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.value-item { padding: 28px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background-color: var(--color-bg); }
.value-item__num { font-size: 2rem; font-weight: 800; color: var(--color-primary); margin-bottom: 8px; }
.team-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 32px; }
.team-member { text-align: center; }
.team-member__avatar { width: 140px; height: 140px; border-radius: 50%; background-color: var(--color-bg-alt); margin: 0 auto 16px; border: 1px solid var(--color-border); }
.team-member__name { font-weight: 700; font-size: 1.125rem; }
.team-member__role { color: var(--color-text-muted); font-size: 0.9375rem; }

/* Products page */
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px; }
.filter-btn { padding: 8px 20px; border: 1px solid var(--color-border); background-color: var(--color-bg); border-radius: 999px; cursor: pointer; font-size: 0.9375rem; transition: var(--transition); }
.filter-btn:hover, .filter-btn.is-active { background-color: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.product-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-tile { display: flex; flex-direction: column; border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; background-color: var(--color-bg); transition: var(--transition); color: inherit; }
.product-tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-primary-light); }
.product-tile__image { height: 220px; background-color: var(--color-bg-alt); display: block; padding: 0; overflow: hidden; }
.product-tile__image img { width: 100%; height: 100%; object-fit: cover; border-radius: 0; border: none; }
.product-tile__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.product-tile__tag { display: inline-block; align-self: flex-start; padding: 4px 10px; border-radius: 4px; background-color: var(--color-bg-alt); color: var(--color-primary); font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 12px; }
.product-tile__title { font-size: 1.125rem; font-weight: 700; margin-bottom: 8px; }
.product-tile__spec { color: var(--color-text-muted); font-size: 0.9375rem; margin-bottom: 16px; }
.product-tile__spec li { padding-left: 18px; position: relative; margin-bottom: 4px; }
.product-tile--featured { grid-column: 1 / -1; border: 2px solid var(--color-primary); position: relative; flex-direction: row; }
.product-tile--featured .product-tile__image { width: 45%; height: auto; min-height: 280px; }
.product-tile--featured .product-tile__body { width: 55%; justify-content: center; }
.product-tile--featured .product-tile__title { font-size: 1.5rem; }
.product-tile__badge { position: absolute; top: 12px; right: 12px; background: var(--color-accent); color: #fff; padding: 4px 12px; border-radius: 4px; font-size: 0.75rem; font-weight: 700; z-index: 2; }
.product-tile__spec li::before { content: "·"; position: absolute; left: 4px; font-weight: 700; color: var(--color-primary); }
.product-tile__link { margin-top: auto; padding-top: 12px; color: var(--color-primary); font-weight: 600; font-size: 0.9375rem; }

/* Contact */
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.contact-info__item { display: flex; gap: 16px; margin-bottom: 28px; }
.contact-info__icon { width: 44px; height: 44px; border-radius: var(--radius-sm); background-color: var(--color-bg-alt); color: var(--color-primary); display: grid; place-items: center; flex-shrink: 0; }
.contact-info__label { font-size: 0.8125rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 4px; }
.contact-info__value { font-weight: 600; }
.contact-form { background-color: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-md); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 8px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: 1rem; font-family: inherit; background-color: var(--color-bg); transition: var(--transition); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.12); }
.form-group textarea { min-height: 120px; resize: vertical; }
.form-note { font-size: 0.8125rem; color: var(--color-text-muted); margin-top: 12px; }

/* ==========================================================================
   产品详情页 (Product Detail Page) 样式
   ========================================================================== */
.product-detail { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: start; }
.product-detail__media { position: sticky; top: 96px; display: flex; flex-direction: row; align-items: flex-start; gap: 20px; }
.product-detail__image-frame { border-radius: var(--radius-lg); background-color: var(--color-bg-alt); border: none; width: 500px; height: 500px; display: block; overflow: hidden; padding: 0; }
.product-detail__image-frame img { width: 100%; height: 100%; object-fit: cover; display: block; border-radius: var(--radius-lg); }
.product-detail__thumbs { display: grid; grid-template-columns: 1fr; grid-template-rows: repeat(4, 1fr); gap: 10px; width: 100px; margin-top: 0; }
.product-detail__thumb { width: 100px; height: 100px; border-radius: 10px; border: 2px solid transparent; background-color: var(--color-bg-alt); display: block; overflow: hidden; cursor: pointer; transition: var(--transition); }
.product-detail__thumb:hover { border-color: var(--color-primary-light); transform: translateY(-2px); }
.product-detail__thumb.is-active { border-color: var(--color-primary); }
.product-detail__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-detail__thumb:hover, .product-detail__thumb.is-active { border-color: var(--color-primary); }
.product-detail__summary { padding-top: 8px; }
.product-detail__tag { display: inline-block; padding: 4px 12px; border-radius: 4px; background-color: var(--color-bg-alt); color: var(--color-primary); font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 16px; }
.product-detail__title { font-size: clamp(1.75rem, 3vw, 2.5rem); line-height: 1.2; font-weight: 800; margin-bottom: 12px; }
.product-detail__lead { font-size: 1.0625rem; color: var(--color-text-muted); margin-bottom: 28px; }
.product-detail__highlights { background-color: var(--color-bg-alt); border-radius: var(--radius-md); padding: 24px; margin-bottom: 28px; }
.product-detail__highlights li { position: relative; padding-left: 24px; margin-bottom: 10px; color: var(--color-text); }
.product-detail__highlights li::before { content: "\2713"; position: absolute; left: 0; color: var(--color-primary); font-weight: 700; }
.product-detail__highlights li:last-child { margin-bottom: 0; }
.product-detail__cta { display: flex; gap: 16px; flex-wrap: wrap; }
.block { margin-bottom: 64px; }
.block:last-child { margin-bottom: 0; }
.block__head { margin-bottom: 24px; }
.block__eyebrow { display: inline-block; font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-primary); margin-bottom: 8px; }
.block__title { font-size: clamp(1.5rem, 2.4vw, 2rem); font-weight: 700; margin-bottom: 8px; }
.block__desc { color: var(--color-text-muted); font-size: 1.0625rem; }
.block p { color: var(--color-text-muted); margin-bottom: 16px; }
.spec-table { width: 100%; border-collapse: collapse; background-color: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; }
.spec-table th, .spec-table td { padding: 12px 14px; text-align: center; border-bottom: 1px solid var(--color-border); font-size: 0.9375rem; }
.spec-table thead th { background-color: var(--color-bg-alt); font-weight: 700; color: var(--color-text); }
.spec-table tbody tr:last-child td { border-bottom: none; }
.spec-table td:first-child, .spec-table th:first-child { text-align: left; }
.spec-table th:not(:first-child) { color: var(--color-primary-dark); }

.spec-table__note { margin-top: 12px; font-size: 0.875rem; color: var(--color-text-muted); font-style: italic; }
.feature-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.feature-list__item { padding: 24px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background-color: var(--color-bg); }
.feature-list__icon { width: 40px; height: 40px; border-radius: var(--radius-sm); background-color: var(--color-bg-alt); color: var(--color-primary); display: grid; place-items: center; font-size: 1.25rem; margin-bottom: 14px; }
.feature-list__title { font-weight: 700; margin-bottom: 6px; }
.feature-list__desc { font-size: 0.9375rem; color: var(--color-text-muted); }
.app-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.app-list__item { padding: 20px; border-left: 3px solid var(--color-primary); background-color: var(--color-bg); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; box-shadow: var(--shadow-sm); }
.app-list__label { font-weight: 700; margin-bottom: 4px; }
.app-list__detail { font-size: 0.9375rem; color: var(--color-text-muted); }
.pkg-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.pkg-card { padding: 24px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background-color: var(--color-bg); text-align: center; }
.pkg-card__size { font-size: 1.5rem; font-weight: 800; color: var(--color-primary); }
.pkg-card__desc { font-size: 0.9375rem; color: var(--color-text-muted); margin-top: 6px; }
.doc-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.doc-list__item { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); background-color: var(--color-bg); }
.doc-list__icon { width: 36px; height: 36px; border-radius: var(--radius-sm); background-color: var(--color-bg-alt); color: var(--color-primary); display: grid; place-items: center; font-size: 1.125rem; flex-shrink: 0; }
.doc-list__label { font-weight: 600; font-size: 0.9375rem; }
.doc-list__label small { display: block; font-weight: 400; color: var(--color-text-muted); font-size: 0.8125rem; margin-top: 2px; }
.product-cta { background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary)); color: var(--color-white); border-radius: var(--radius-lg); padding: 48px 40px; text-align: center; margin-top: 64px; }
.product-cta__title { font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 800; margin-bottom: 12px; }
.product-cta__desc { color: rgba(255, 255, 255, 0.88); margin-bottom: 28px; max-width: 540px; margin-left: auto; margin-right: auto; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }
@media (max-width: 900px) {
  .product-detail { grid-template-columns: 1fr; }
  .product-detail__media { position: static; }
}
/* Responsive */
@media (max-width: 900px) {
  .site-nav { position: fixed; top: 72px; left: 0; right: 0; flex-direction: column; background-color: var(--color-bg); padding: 24px; gap: 16px; border-bottom: 1px solid var(--color-border); transform: translateY(-150%); transition: var(--transition); }
  .site-nav.is-open { transform: translateY(0); }
  .nav-toggle { display: flex; }
  .distribution, .community, .story, .contact-layout, .hero__inner { grid-template-columns: 1fr; }
  .hero { padding: 64px 0; }
  .hero__image-frame { min-height: 280px; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .product-list { grid-template-columns: repeat(2, 1fr); }
  .product-tile--featured { grid-column: span 2; flex-direction: row; }
  .product-tile--featured .product-tile__image { width: 50%; height: auto; min-height: 220px; }
}
@media (max-width: 600px) {
  .product-list { grid-template-columns: 1fr; }
  .product-tile--featured { grid-column: span 1; flex-direction: column; }
  .product-tile--featured .product-tile__image { width: 100%; height: 220px; min-height: 220px; }
  .product-tile--featured .product-tile__body { width: 100%; }
  .section { padding: 64px 0; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .site-footer__bottom { flex-direction: column; text-align: center; }
}

/* ---------- 滚动动画 ---------- */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.reveal--visible { opacity: 1; transform: translateY(0); }

.reveal-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal-left.reveal--visible { opacity: 1; transform: translateX(0); }

.reveal-right { opacity: 0; transform: translateX(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal-right.reveal--visible { opacity: 1; transform: translateX(0); }

.reveal-scale { opacity: 0; transform: scale(0.9); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal-scale.reveal--visible { opacity: 1; transform: scale(1); }

.reveal-stagger > * { opacity: 0; transform: translateY(30px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal-stagger.reveal--visible > *:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.1s; }
.reveal-stagger.reveal--visible > *:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.2s; }
.reveal-stagger.reveal--visible > *:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.3s; }
.reveal-stagger.reveal--visible > *:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.4s; }
.reveal-stagger.reveal--visible > *:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 0.5s; }
.reveal-stagger.reveal--visible > *:nth-child(6) { opacity: 1; transform: translateY(0); transition-delay: 0.6s; }
.reveal-stagger.reveal--visible > *:nth-child(7) { opacity: 1; transform: translateY(0); transition-delay: 0.7s; }