/* ==========================================================================
   小野牛电商工具箱 · 全站公共样式
   ========================================================================== */

:root {
  --primary: #2b7fd4;
  --primary-dark: #1e6bb8;
  --bg: #f6f9fc;
  --card: #ffffff;
  --text: #2b3445;
  --text-2: #6b7688;
  --border: #e6ecf2;
  --radius: 14px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ===== 导航 ===== */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 62px;
}
.logo { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 700; }
.logo-img {
  width: 38px; height: 38px; border-radius: 10px;
  box-shadow: 0 2px 8px rgba(30,60,90,.15);
}
.nav-back { font-size: 14.5px; color: var(--text-2); font-weight: 600; }
.nav-back:hover { color: var(--primary); }

/* ===== 首屏 ===== */
.hero {
  text-align: center;
  padding: 60px 24px 30px;
  background:
    radial-gradient(600px 300px at 20% 0%, rgba(43,127,212,.10), transparent),
    radial-gradient(600px 300px at 80% 10%, rgba(43,127,212,.08), transparent);
}
.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, #e8f2fc, #d9ebfb);
  color: var(--primary);
  font-size: 24px; font-weight: 800; letter-spacing: 1px;
  padding: 12px 34px; border-radius: 999px;
  margin-bottom: 24px;
  box-shadow: 0 4px 14px rgba(43,127,212,.15);
}
.hero h1 { font-size: 44px; font-weight: 800; letter-spacing: 1px; }
.hero h1 .accent { color: var(--primary); }
.btn {
  display: inline-block; padding: 14px 38px;
  border-radius: 10px; font-size: 16px; font-weight: 700;
  transition: all .2s; text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(43,127,212,.30); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-ghost:hover { background: #f0f7fe; }

/* ===== 功能 + 下载区（左右布局） ===== */
.main-zone { padding: 28px 0 80px; }
.features-layout {
  display: grid; grid-template-columns: 1fr 330px; gap: 30px;
  align-items: start;
}
@media (max-width: 960px) { .features-layout { grid-template-columns: 1fr; } }

.cards-grid {
  margin-top: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
}
@media (max-width: 640px) { .cards-grid { grid-template-columns: 1fr; } }
.feature-card {
  position: relative;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px 22px;
  transition: all .25s;
  display: block;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(30,60,90,.12); }
.feature-card h3 { font-size: 18px; margin-bottom: 8px; }
.feature-card p { font-size: 14.5px; color: var(--text-2); line-height: 1.8; }
.feature-card p .hl { font-weight: 700; }
.feature-card.c-rec p .hl { color: var(--primary-dark); }
.feature-card.c-script p .hl { color: #17a06f; }
.feature-card.c-water p .hl { color: #f08a00; }
.feature-card.c-screen p .hl { color: #7c4ff0; }
.feature-card ul { margin-top: 10px; list-style: none; }
.feature-card li { font-size: 13.5px; color: var(--text-2); padding: 3px 0; }
.feature-card li::before { content: "✓ "; color: var(--primary); font-weight: 700; }
.feature-card li b { color: var(--text); font-weight: 600; }
.card-more { display: inline-block; margin-top: 12px; font-size: 13.5px; font-weight: 700; color: var(--primary); }
.card-more::after { content: " →"; }

/* 高亮主题 */
.feature-card.c-rec { border-top: 4px solid #2b7fd4; background: linear-gradient(180deg, #f2f8ff, #ffffff); }
.feature-card.c-rec .feature-icon { background: linear-gradient(135deg, #2b7fd4, #56a4ee); color: #fff; }
.feature-card.c-script { border-top: 4px solid #22b07d; background: linear-gradient(180deg, #f0fbf6, #ffffff); }
.feature-card.c-script .feature-icon { background: linear-gradient(135deg, #22b07d, #4fd3a8); color: #fff; }
.feature-card.c-water { border-top: 4px solid #ff9f2e; background: linear-gradient(180deg, #fff8ef, #ffffff); }
.feature-card.c-water .feature-icon { background: linear-gradient(135deg, #ff9f2e, #ffc06b); color: #fff; }
.feature-card.c-screen { border-top: 4px solid #8b5cf6; background: linear-gradient(180deg, #f7f3ff, #ffffff); }
.feature-card.c-screen .feature-icon { background: linear-gradient(135deg, #8b5cf6, #b18cff); color: #fff; }
.feature-icon {
  width: 52px; height: 52px; border-radius: 13px;
  background: #e8f2fc;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin-bottom: 14px;
}

/* 主推卡：直播间录屏 */
.feature-card.featured {
  border: 2px solid var(--primary);
  background: linear-gradient(180deg, #eaf4ff, #ffffff);
  box-shadow: 0 12px 28px rgba(43,127,212,.22);
}
.feature-card.featured h3 { color: var(--primary-dark); }
.hot-badge {
  position: absolute; top: -13px; right: 14px;
  background: linear-gradient(135deg, #ff6b35, #ff3d68);
  color: #fff; font-size: 12px; font-weight: 700;
  padding: 4px 14px; border-radius: 999px;
  box-shadow: 0 4px 10px rgba(255,80,80,.35);
}

/* 下载盒（右侧，合并为一个框） */
.download-box {
  background: #fff;
  border: 2px solid var(--primary);
  border-radius: 16px;
  padding: 30px 26px;
  box-shadow: 0 14px 34px rgba(43,127,212,.18);
  text-align: center;
}
.download-box h3 { font-size: 22px; font-weight: 800; }
.download-box .dl-sub { font-size: 14px; color: var(--text-2); margin-top: 6px; }
.download-box .btn { display: block; width: 100%; margin-top: 18px; }
.dl-divider {
  display: flex; align-items: center; gap: 12px;
  color: #b3bec9; font-size: 13px; margin: 20px 0 4px;
}
.dl-divider::before, .dl-divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.dl-code { margin-top: 12px; font-size: 14px; color: var(--text-2); }
.dl-code b { color: var(--primary); font-size: 17px; }
.dl-free {
  margin-top: 16px; font-size: 13px; color: var(--text-2);
  background: #f2f8ff; border-radius: 8px; padding: 8px;
}

/* ===== 宣传区 ===== */
.showcase { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 70px 0; }
.section-title { text-align: center; margin-bottom: 44px; }
.section-title h2 { font-size: 30px; font-weight: 800; }
.section-title p { margin-top: 10px; color: var(--text-2); font-size: 16px; }
.shots { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 860px) { .shots { grid-template-columns: 1fr; } }
.shot-card {
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; background: var(--bg);
  box-shadow: 0 10px 26px rgba(30,60,90,.08);
  transition: all .25s;
}
.shot-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(30,60,90,.14); }
.shot-card img { width: 100%; }
.shot-card .caption {
  padding: 16px 20px; text-align: center;
  font-size: 15px; font-weight: 600; color: var(--text-2);
  background: #fff; border-top: 1px solid var(--border);
}
.showcase-points {
  margin-top: 44px;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px;
  text-align: center;
}
.point b { display: block; font-size: 26px; color: var(--primary); }
.point span { font-size: 14px; color: var(--text-2); }

/* 首页文字介绍区 */
.intro-wrap { padding: 0 0 70px; }

/* ===== 底部 ===== */
footer { background: #222c3a; color: #9aa7b8; text-align: center; padding: 34px 24px 30px; font-size: 14px; }
footer b { color: #fff; }
.foot-tags { margin-top: 8px; }
.foot-copy { margin-top: 18px; font-size: 12.5px; color: #6f7d8f; }
.foot-nav {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 8px 22px; margin-bottom: 18px; padding-bottom: 18px;
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.foot-nav a { font-size: 13.5px; color: #9aa7b8; }
.foot-nav a:hover { color: #fff; }
.site-stats {
  margin-top: 22px; padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.10);
  display: flex; justify-content: center; align-items: center;
  gap: 30px; flex-wrap: wrap;
}
.site-stats .stat { min-width: 104px; }
.site-stats .stat b {
  display: block; font-size: 25px; font-weight: 800; color: #fff;
  letter-spacing: .5px; font-variant-numeric: tabular-nums;
  transition: color .3s;
}
.site-stats .stat span { display: block; font-size: 12.5px; color: #8b98a9; margin-top: 2px; }
.stat-sep { width: 1px; height: 32px; background: rgba(255,255,255,.12); }

/* ==========================================================================
   内页（功能详情页 / 教程 / FAQ）专用样式
   ========================================================================== */

/* 面包屑 */
.breadcrumb {
  padding: 18px 0 0;
  font-size: 13.5px; color: var(--text-2);
}
.breadcrumb a { color: var(--text-2); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-style: normal; margin: 0 7px; color: #b9c4d0; }

/* 内页头部 */
.page-hero {
  text-align: center;
  padding: 34px 24px 34px;
  background:
    radial-gradient(600px 300px at 50% 0%, rgba(43,127,212,.10), transparent);
}
.page-hero .kicker {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 1.5px;
  color: var(--primary); background: #e8f2fc; padding: 5px 14px;
  border-radius: 999px; margin-bottom: 16px;
}
.page-hero h1 { font-size: 38px; font-weight: 800; letter-spacing: .5px; line-height: 1.35; }
.page-hero .lead {
  max-width: 760px; margin: 16px auto 0;
  font-size: 16px; color: var(--text-2);
}

/* 内页主体 */
.page-main { padding: 10px 0 70px; }
.page-layout {
  display: grid; grid-template-columns: 1fr 320px; gap: 32px; align-items: start;
}
@media (max-width: 960px) { .page-layout { grid-template-columns: 1fr; } }

/* 正文排版 */
.article {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 34px 34px 38px;
  box-shadow: 0 2px 12px rgba(30,60,90,.04);
}
.article h2 {
  font-size: 22px; font-weight: 800; margin: 30px 0 12px;
  padding-left: 13px; border-left: 4px solid var(--primary);
  line-height: 1.5;
}
.article h2:first-child { margin-top: 0; }
.article h3 { font-size: 17px; font-weight: 700; margin: 22px 0 8px; }
.article p { font-size: 15.5px; color: #3f4a5a; margin-bottom: 13px; line-height: 1.9; }
.article p b, .article li b { color: var(--text); font-weight: 700; }
.article ul, .article ol { margin: 12px 0 16px 22px; }
.article li { font-size: 15px; color: #3f4a5a; margin-bottom: 7px; line-height: 1.85; }
.article .hl { color: var(--primary-dark); font-weight: 700; }
.article img { border-radius: 10px; border: 1px solid var(--border); margin: 16px 0; }

/* 要点卡片 */
.key-points {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px; margin: 18px 0 6px;
}
.key-point {
  background: #f7fafd; border: 1px solid var(--border);
  border-radius: 11px; padding: 15px 16px;
}
.key-point b { display: block; font-size: 15px; color: var(--primary-dark); margin-bottom: 4px; }
.key-point span { font-size: 13.5px; color: var(--text-2); line-height: 1.7; }

/* 步骤 */
.steps { margin: 16px 0 6px; counter-reset: step; }
.step {
  display: flex; gap: 14px; padding: 13px 0;
  border-bottom: 1px dashed #eef2f6;
}
.step:last-child { border-bottom: none; }
.step .no {
  counter-increment: step; flex: none;
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
}
.step .no::before { content: counter(step); }
.step .txt { flex: 1; }
.step .txt b { display: block; font-size: 15px; margin-bottom: 2px; }
.step .txt span { font-size: 14px; color: var(--text-2); line-height: 1.8; }

/* FAQ 折叠 */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.faq-item:last-child { border-bottom: none; }
.faq-item summary {
  cursor: pointer; font-size: 16px; font-weight: 700;
  list-style: none; display: flex; align-items: flex-start; gap: 10px;
  line-height: 1.6;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: "Q"; flex: none;
  width: 21px; height: 21px; border-radius: 6px;
  background: var(--primary); color: #fff;
  font-size: 12.5px; font-weight: 800;
  display: flex; align-items: center; justify-content: center; margin-top: 2px;
}
.faq-item[open] summary { color: var(--primary-dark); }
.faq-item .ans {
  padding: 11px 0 0 31px;
  font-size: 14.8px; color: var(--text-2); line-height: 1.9;
}

/* 侧边下载 CTA */
.side-cta {
  background: #fff; border: 2px solid var(--primary);
  border-radius: 16px; padding: 26px 22px; text-align: center;
  box-shadow: 0 14px 34px rgba(43,127,212,.16);
}
.side-cta h3 { font-size: 19px; font-weight: 800; margin-bottom: 6px; }
.side-cta .sub { font-size: 13.5px; color: var(--text-2); margin-bottom: 4px; }
.side-cta .btn { display: block; width: 100%; margin-top: 14px; padding: 13px 20px; font-size: 15px; }
.side-cta .dl-code { font-size: 13.5px; }
.side-cta .dl-free { font-size: 12.5px; }
.side-links {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 22px; margin-top: 18px;
}
.side-links h4 { font-size: 15px; font-weight: 800; margin-bottom: 10px; }
.side-links a {
  display: block; padding: 8px 0; font-size: 14px; color: var(--text-2);
  border-bottom: 1px dashed #eef2f6;
}
.side-links a:last-child { border-bottom: none; }
.side-links a:hover { color: var(--primary); }
.side-links a::before { content: "· "; color: var(--primary); font-weight: 800; }

/* 底部转化条 */
.cta-bar {
  background: linear-gradient(135deg, #2b7fd4, #1e6bb8);
  border-radius: 16px; padding: 34px 30px; text-align: center;
  color: #fff; margin-top: 34px;
}
.cta-bar h3 { font-size: 23px; font-weight: 800; }
.cta-bar p { font-size: 14.5px; color: rgba(255,255,255,.88); margin-top: 8px; }
.cta-bar .btn {
  background: #fff; color: var(--primary); margin-top: 20px;
  box-shadow: 0 8px 22px rgba(0,0,0,.18);
}
.cta-bar .btn:hover { transform: translateY(-2px); }
.cta-bar .btn-ghost-w {
  display: inline-block; margin-left: 12px; padding: 14px 30px;
  border: 1.5px solid rgba(255,255,255,.6); border-radius: 10px;
  color: #fff; font-size: 15px; font-weight: 700;
}
.cta-bar .btn-ghost-w:hover { background: rgba(255,255,255,.14); }

/* 相关阅读 */
.related { margin-top: 26px; }
.related h3 { font-size: 17px; font-weight: 800; margin-bottom: 14px; }
.related-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px;
}
.related-item {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px; transition: all .22s;
}
.related-item:hover { border-color: var(--primary); box-shadow: 0 8px 20px rgba(43,127,212,.12); }
.related-item b { display: block; font-size: 15px; margin-bottom: 4px; }
.related-item span { font-size: 13.5px; color: var(--text-2); line-height: 1.75; }

/* 教程列表 */
.guide-list { display: grid; gap: 14px; }
.guide-item {
  display: block; background: #fff; border: 1px solid var(--border);
  border-radius: 12px; padding: 18px 20px; transition: all .22s;
}
.guide-item:hover { border-color: var(--primary); box-shadow: 0 8px 22px rgba(43,127,212,.12); }
.guide-item .tag {
  display: inline-block; font-size: 12px; font-weight: 700;
  color: var(--primary); background: #e8f2fc;
  padding: 2px 9px; border-radius: 5px; margin-bottom: 8px;
}
.guide-item b { display: block; font-size: 16px; margin-bottom: 5px; }
.guide-item span { font-size: 14px; color: var(--text-2); line-height: 1.8; }

/* ===== 手机端适配 ===== */
@media (max-width: 960px) {
  .container { padding: 0 18px; }
  .hero { padding: 42px 18px 22px; }
  .hero-badge { font-size: 15px; padding: 9px 18px; line-height: 1.5; }
  .hero h1 { font-size: 30px; line-height: 1.35; }
  .main-zone { padding: 20px 0 52px; }
  .features-layout { gap: 18px; }
  /* 手机上把下载入口提到最前，方便直接下载 */
  .download-box { order: -1; }
  .feature-card { padding: 20px 16px; }
  .showcase { padding: 44px 0; }
  .section-title { margin-bottom: 30px; }
  .section-title h2 { font-size: 24px; }
  .showcase-points { margin-top: 30px; }

  .page-hero { padding: 26px 18px 26px; }
  .page-hero h1 { font-size: 27px; }
  .page-hero .lead { font-size: 15px; }
  .page-layout { gap: 20px; }
  .side-cta { order: -1; }
  .article { padding: 24px 20px 28px; }
  .article h2 { font-size: 19.5px; }
  .article p, .article li { font-size: 15px; }
  .cta-bar { padding: 26px 20px; }
  .cta-bar h3 { font-size: 20px; }
  .cta-bar .btn-ghost-w { display: block; margin: 12px 0 0; }
}
@media (max-width: 640px) {
  body { -webkit-text-size-adjust: 100%; }
  .navbar .container { height: 54px; }
  .logo { font-size: 16px; gap: 8px; }
  .logo-img { width: 32px; height: 32px; border-radius: 8px; }
  .nav-back { font-size: 13.5px; }
  .hero { padding: 34px 16px 18px; }
  .hero-badge { font-size: 13.5px; padding: 8px 15px; }
  .hero h1 { font-size: 25px; }
  .main-zone { padding: 16px 0 44px; }
  .cards-grid { gap: 12px; }
  .feature-card { padding: 18px 14px; border-radius: 12px; }
  .feature-card h3 { font-size: 16.5px; }
  .feature-card p { font-size: 13.5px; line-height: 1.75; }
  .feature-card li { font-size: 12.8px; }
  .feature-icon { width: 42px; height: 42px; font-size: 21px; border-radius: 11px; margin-bottom: 10px; }
  .btn { padding: 13px 20px; font-size: 15px; }
  .download-box { border-radius: 14px; padding: 20px 16px; }
  .download-box h3 { font-size: 19px; }
  .download-box .dl-sub { font-size: 13px; }
  .dl-code, .dl-free { font-size: 12.5px; }
  .shot-card .caption { font-size: 13.5px; padding: 12px 14px; }
  .showcase-points { grid-template-columns: 1fr 1fr; gap: 14px 10px; }
  .point b { font-size: 20px; }
  .point span { font-size: 12.5px; }
  footer { padding: 26px 18px 24px; font-size: 13px; line-height: 1.6; }
  .foot-nav { gap: 6px 16px; margin-bottom: 14px; padding-bottom: 14px; }
  .foot-nav a { font-size: 12.8px; }
  .site-stats { margin-top: 18px; padding-top: 16px; gap: 16px 20px; }
  .site-stats .stat { min-width: 88px; }
  .site-stats .stat b { font-size: 19px; }
  .site-stats .stat span { font-size: 11.5px; }
  .stat-sep { display: none; }
  .foot-copy { margin-top: 14px; }

  .breadcrumb { padding-top: 14px; font-size: 12.8px; }
  .page-hero { padding: 20px 16px 22px; }
  .page-hero h1 { font-size: 22px; }
  .page-hero .lead { font-size: 14px; margin-top: 12px; }
  .page-main { padding-bottom: 50px; }
  .intro-wrap { padding: 0 0 50px; }
  .article { padding: 20px 15px 24px; border-radius: 12px; }
  .article h2 { font-size: 18px; margin: 24px 0 10px; }
  .article h3 { font-size: 16px; }
  .article p, .article li { font-size: 14.5px; line-height: 1.85; }
  .article ul, .article ol { margin-left: 18px; }
  .key-points { grid-template-columns: 1fr; gap: 10px; }
  .side-cta { border-radius: 14px; padding: 20px 16px; }
  .side-cta h3 { font-size: 17.5px; }
  .side-links { padding: 16px 18px; }
  .cta-bar { border-radius: 14px; padding: 22px 16px; }
  .cta-bar h3 { font-size: 18px; }
  .related-grid { grid-template-columns: 1fr; }
  .faq-item summary { font-size: 15px; }
  .faq-item .ans { font-size: 14.2px; padding-left: 0; padding-top: 9px; }
}
@media (max-width: 380px) {
  .hero h1 { font-size: 22px; }
  .hero-badge { font-size: 12.5px; }
  .page-hero h1 { font-size: 20px; }
}