/* ==========================================================
   云耕百草 官网 · 公共样式
   说明: 全站配色/字号/间距集中在此, 修改主题只改 :root 变量
   ========================================================== */

:root {
  --c-primary: #66a75c;        /* 登录按钮 / 导航高亮 */
  --c-title-green: #6aa53c;    /* 首页大标题绿 */
  --c-dark-green: #44704a;     /* 图标底色 / CTA 按钮 */
  --c-footer-bar: #3f5b2b;     /* 页脚版权条 */
  --c-band: #e9f0ed;           /* 浅绿灰段落底色 */
  --c-bg: #f7f9fa;             /* 页面底色 */
  --c-card: #e9f0ec;           /* 浅绿卡片底色 */
  --c-card-white: #fbfcfc;     /* 白卡片底色 */
  --c-border: #e2e7e5;
  --c-text: #333333;
  --c-text-2: #555555;
  --c-muted: #8a9490;
  --radius: 8px;
  --header-h: 88px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 251, 250, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--c-border);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.logo-img {
  /* 与导航栏等高, 不再溢出 */
  height: var(--header-h);
  width: auto;
  display: block;
}

.logo-slogan {
  color: #9cc253;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 4px;
  line-height: 1.5;
}

.main-nav {
  margin-left: auto;
  display: flex;
  gap: 46px;
}

.main-nav a {
  position: relative;
  font-size: 18px;
  color: #222;
  padding: 6px 0;
  transition: color .2s;
}

.main-nav a:hover { color: var(--c-primary); }

.main-nav a.active { color: var(--c-primary); }

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -8px;
  width: 34px;
  height: 3px;
  border-radius: 2px;
  background: var(--c-primary);
}

.btn-login {
  flex-shrink: 0;
  background: var(--c-primary);
  color: #fff;
  font-size: 16px;
  padding: 10px 30px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: filter .2s;
}
.btn-login:hover { filter: brightness(1.08); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 26px;
  color: var(--c-dark-green);
  cursor: pointer;
}

/* ---------------- 首页 Hero (整幅品牌大图, 文字已烘焙在图内) ---------------- */
.hero {
  background: var(--c-bg);
  line-height: 0;
}
.hero-img {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------------- 通用段落 ---------------- */
.section { padding: 90px 0; }
.section.band { background: var(--c-band); }

.section-title {
  text-align: center;
  font-size: 40px;
  font-weight: 800;
  letter-spacing: 2px;
  color: #1c1c1c;
}
.section-title.green { color: var(--c-title-green); }

.section-sub {
  text-align: center;
  color: #9cc253;
  font-size: 17px;
  margin-top: 18px;
}
.section-sub.gray { color: var(--c-text-2); }

/* 子页面顶部横幅 */
.page-hero {
  background: var(--c-band);
  padding: 96px 24px;
  text-align: center;
}
.page-hero h1 {
  font-size: 46px;
  font-weight: 800;
  letter-spacing: 2px;
  color: #1c1c1c;
}
.page-hero p {
  max-width: 860px;
  margin: 26px auto 0;
  color: var(--c-text-2);
  font-size: 17px;
}

/* ---------------- 我们是谁 / 品牌故事 ---------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
  margin-top: 70px;
}
.about-text p {
  color: var(--c-text-2);
  font-size: 16.5px;
  margin-bottom: 26px;
  text-align: justify;
}
.about-text .lead strong { color: var(--c-dark-green); }
.about-img img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(60, 90, 60, .12);
}

/* ---------------- 卡片栅格 (核心能力/平台优势/分类) ---------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  margin-top: 64px;
}
.card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }

.feature-card {
  background: var(--c-card);
  border-radius: var(--radius);
  padding: 40px 34px 46px;
  transition: transform .25s, box-shadow .25s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 26px rgba(60, 90, 60, .10);
}
.feature-card.center { text-align: center; }

.icon-sq {
  width: 62px;
  height: 62px;
  border-radius: 10px;
  background: var(--c-dark-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 30px;
}
.icon-sq svg { width: 30px; height: 30px; stroke: #fff; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.feature-card.center .icon-sq { margin: 0 auto 26px; background: none; }
.feature-card.center .icon-sq svg { width: 44px; height: 44px; stroke: var(--c-dark-green); stroke-width: 2.2; }

.feature-card h3 { font-size: 21px; margin-bottom: 16px; color: #1c1c1c; }
.feature-card p { color: var(--c-text-2); font-size: 15.5px; }
.feature-card .count { color: var(--c-muted); font-size: 15px; margin-top: 10px; }

/* ---------------- 步骤卡片 (标准化流程/合作流程) ---------------- */
.step-card {
  background: var(--c-card-white);
  border-radius: var(--radius);
  padding: 46px 30px;
  text-align: center;
}
.step-card .num {
  font-size: 44px;
  font-weight: 800;
  color: #cfe0d3;
  letter-spacing: 2px;
}
.step-card h3 { font-size: 20px; margin: 14px 0 16px; color: #1c1c1c; }
.step-card p { color: var(--c-text-2); font-size: 15.5px; }

/* ---------------- 首页轮播 (我们能做什么) ---------------- */
.carousel {
  margin-top: 64px;
  overflow: hidden;
  position: relative;
}
.carousel-track {
  display: flex;
  gap: 8.67px;   /* 轮播图间距: 原 26px 的三分之一 */
  transition: transform .45s cubic-bezier(.22, .61, .36, 1);
  will-change: transform;
}
.slide {
  flex: 0 0 46%;
  min-width: 300px;
}
.slide img {
  width: 100%;
  height: auto;
  border-radius: 4px;
}
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 40px;
}
.carousel-dots button {
  width: 10px;
  height: 10px;
  border-radius: 6px;
  border: none;
  background: #c3cdc6;
  cursor: pointer;
  padding: 0;
  transition: all .25s;
}
.carousel-dots button.active { width: 26px; background: var(--c-dark-green); }

/* ---------------- 时间轴 (我们做了什么) ---------------- */
.timeline-scroll {
  margin-top: 64px;
  overflow-x: auto;
  padding-bottom: 18px;
  scrollbar-color: var(--c-dark-green) #dfe4e1;
}
.timeline-track {
  display: flex;
  gap: 26px;
  padding: 4px;
}
.timeline-card {
  flex: 0 0 360px;
  background: var(--c-card-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 40px 34px 56px;
  min-height: 300px;
}
.timeline-card .date {
  display: inline-block;
  background: #ddebdd;
  color: #4c7a4c;
  font-size: 14.5px;
  padding: 6px 18px;
  border-radius: 20px;
}
.timeline-card h3 { font-size: 21px; margin: 26px 0 18px; color: #1c1c1c; }
.timeline-card p { color: var(--c-text-2); font-size: 15.5px; }
.scroll-hint {
  text-align: center;
  color: var(--c-text-2);
  font-size: 15px;
  margin-top: 26px;
}

/* ---------------- 文章卡片 (精选文章) ---------------- */
.article-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-top: 46px;
}
.article-card {
  background: var(--c-card-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 40px 44px 52px;
  transition: box-shadow .25s, transform .25s;
}
.article-card:hover { box-shadow: 0 12px 26px rgba(60, 90, 60, .10); transform: translateY(-3px); }
.article-meta { display: flex; align-items: center; gap: 18px; }
.article-meta .tag {
  background: #ddebdd;
  color: #4c7a4c;
  font-size: 14px;
  padding: 5px 14px;
  border-radius: 4px;
}
.article-meta time { color: var(--c-muted); font-size: 15px; }
.article-card h3 { font-size: 21px; margin: 24px 0 16px; color: #1c1c1c; }
.article-card p { color: var(--c-text-2); font-size: 15.5px; }

.section-title.left { text-align: left; }

/* ---------------- 合作伙伴 ---------------- */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 64px;
}
.partner-card {
  background: var(--c-card);
  border-radius: var(--radius);
  text-align: center;
  padding: 40px 20px;
}
.partner-card h3 { font-size: 19px; color: #1c1c1c; }
.partner-card p { color: var(--c-muted); font-size: 15px; margin-top: 12px; }

/* ---------------- 核心理念 (文案单行展示, 避免末字孤行) ---------------- */
.value-card {
  background: var(--c-card-white);
  border-radius: var(--radius);
  text-align: center;
  padding: 52px 20px;
}
.value-card h3 { color: var(--c-dark-green); font-size: 24px; margin-bottom: 22px; }
.value-card p { color: var(--c-text-2); font-size: 15px; letter-spacing: 0; }

/* ---------------- 愿景与使命 ---------------- */
.vm-block { max-width: 860px; margin: 0 auto; text-align: center; }
.vm-block + .vm-block { margin-top: 80px; }
.vm-block h3 { font-size: 26px; color: #1c1c1c; margin-bottom: 30px; }
.vm-block p { color: var(--c-text-2); font-size: 16.5px; text-align: left; }

/* ---------------- CTA 横幅 ---------------- */
.cta-band {
  background: var(--c-band);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding: 84px 24px;
  text-align: center;
}
.cta-band h2 { font-size: 32px; color: #1c1c1c; letter-spacing: 1px; }
.cta-band p { color: var(--c-text-2); font-size: 17px; margin-top: 24px; }
.btn-cta {
  display: inline-block;
  margin-top: 44px;
  background: var(--c-dark-green);
  color: #fff;
  font-size: 17px;
  padding: 16px 52px;
  border-radius: 6px;
  transition: filter .2s;
}
.btn-cta:hover { filter: brightness(1.12); }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--c-bg); padding-top: 80px; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 70px;
}
.footer-grid h4 { font-size: 19px; color: #1c1c1c; margin-bottom: 34px; }
.footer-grid li { margin-bottom: 26px; }
.footer-grid a { color: var(--c-muted); font-size: 16px; transition: color .2s; }
.footer-grid a:hover { color: var(--c-primary); }

.footer-bar {
  background: var(--c-footer-bar);
  color: #f0f4ec;
  text-align: center;
  font-size: 15px;
  padding: 22px 16px;
}
.footer-bar span { margin: 0 14px; }

/* ---------------- 响应式 ---------------- */
/* 三列理念卡: 仅在容器满宽(>=1280)时三列, 更窄改单列, 保证文案单行不出孤字 */
@media (max-width: 1279px) {
  .card-grid.cols-3 {
    grid-template-columns: 1fr;
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .article-grid { grid-template-columns: 1fr; }
  .slide { flex: 0 0 70%; }
  .hero-title { font-size: 46px; }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fbfcfb;
    flex-direction: column;
    gap: 0;
    padding: 12px 0;
    border-bottom: 1px solid var(--c-border);
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 14px 32px; }
  .main-nav a.active::after { display: none; }
  .nav-toggle { display: block; margin-left: auto; }
  .btn-login { margin-left: 0; padding: 8px 22px; }
  .logo-img { height: 44px; }
  .logo-slogan { display: none; }
  .card-grid, .card-grid.cols-3, .partner-grid, .footer-grid { grid-template-columns: 1fr; }
  .card-grid.cols-3 { max-width: none; }
  .slide { flex: 0 0 88%; }
  .section { padding: 60px 0; }
  .section-title { font-size: 30px; }
  .page-hero h1 { font-size: 34px; }
  .timeline-card { flex: 0 0 300px; }
  .header-inner { gap: 12px; }
}