/* Gopeed 中文官网 - gopeed.net.cn
   品牌色取自 logo：主绿 #5dc76c，浅绿 #ade2b5
   扁平现代专业风 · 无 emoji · HTML5 响应式 */

:root {
  --green: #5dc76c;
  --green-deep: #3ba24d;
  --green-dark: #2f8a40;
  --green-light: #ade2b5;
  --green-bg: #f2faf3;
  --green-bg-2: #e6f6e9;
  --ink: #17252a;
  --ink-2: #3d4d53;
  --ink-3: #66757c;
  --line: #e3e9e5;
  --bg: #ffffff;
  --bg-soft: #f7faf8;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(23, 37, 42, 0.06);
  --shadow-lg: 0 10px 30px rgba(23, 37, 42, 0.1);
  --container: 1120px;
  --sans: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "SF Mono", Consolas, "Courier New", monospace;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.7;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--green-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

ul, ol { padding-left: 1.2em; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部通告 ---------- */
.topbar {
  background: var(--ink);
  color: #d9e5dd;
  font-size: 13px;
  text-align: center;
  padding: 8px 16px;
}
.topbar a { color: var(--green-light); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 头部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { display: flex; align-items: center; gap: 32px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand svg { flex: none; }
.brand .brand-sub { font-size: 12px; font-weight: 400; color: var(--ink-3); margin-left: 2px; }

.main-nav { display: flex; gap: 28px; margin-left: auto; }
.main-nav a { color: var(--ink-2); font-size: 15px; padding: 4px 0; }
.main-nav a:hover { color: var(--green-dark); text-decoration: none; }
.main-nav a[aria-current="page"] { color: var(--green-dark); font-weight: 600; }

.nav-actions { display: flex; gap: 12px; align-items: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  padding: 10px 22px;
  transition: background-color 0.2s, color 0.2s, box-shadow 0.2s, transform 0.1s;
  text-decoration: none !important;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--green); color: #fff; box-shadow: 0 4px 14px rgba(93, 199, 108, 0.35); }
.btn-primary:hover { background: var(--green-deep); }
.btn-outline { background: #fff; color: var(--green-dark); border: 1.5px solid var(--green); }
.btn-outline:hover { background: var(--green-bg); }
.btn-ghost { background: transparent; color: var(--ink-2); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--green); color: var(--green-dark); }
.btn-lg { padding: 14px 34px; font-size: 17px; border-radius: 10px; }
.btn-sm { padding: 7px 16px; font-size: 14px; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--ink);
}

/* ---------- Hero ---------- */
.hero { padding: 72px 0 64px; background: linear-gradient(180deg, var(--green-bg) 0%, #fff 100%); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.hero h1 { font-size: 42px; line-height: 1.25; letter-spacing: -0.5px; margin-bottom: 18px; }
.hero h1 .accent { color: var(--green-dark); }
.hero-desc { font-size: 17px; color: var(--ink-2); margin-bottom: 28px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 22px; }
.hero-meta { display: flex; gap: 24px; flex-wrap: wrap; font-size: 13.5px; color: var(--ink-3); }
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta svg { flex: none; }
.hero-figure { position: relative; }
.hero-figure img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.hero-figure figcaption { text-align: center; font-size: 12.5px; color: var(--ink-3); margin-top: 10px; }

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.section-head h2 { font-size: 30px; letter-spacing: -0.3px; margin-bottom: 12px; }
.section-head p { color: var(--ink-3); font-size: 16px; }
.kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--green-dark);
  text-transform: uppercase;
  background: var(--green-bg-2);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 14px;
}

/* 场景卡片 */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scene-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.scene-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.scene-card .icon-box {
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--green-bg-2);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.scene-card h3 { font-size: 18px; margin-bottom: 8px; }
.scene-card p { font-size: 14.5px; color: var(--ink-3); }

/* 优势卡片 */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feat-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.feat-card h3 { font-size: 17px; margin: 14px 0 8px; }
.feat-card .icon-box {
  width: 42px; height: 42px; border-radius: 9px;
  background: var(--green-bg-2);
  display: flex; align-items: center; justify-content: center;
}
.feat-card p { font-size: 14px; color: var(--ink-3); }

/* 数据条 */
.stats-band { background: var(--ink); color: #eef5f0; padding: 44px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stats-grid .num { font-size: 32px; font-weight: 800; color: var(--green); }
.stats-grid .lbl { font-size: 13.5px; color: #b9c8bf; margin-top: 4px; }

/* 平台 */
.platform-band { background: #fff; }
.platform-list { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.platform-chip {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14.5px;
  color: var(--ink-2);
  background: var(--bg-soft);
}

/* 版本横幅 */
.version-banner {
  border: 1px solid var(--green-light);
  background: var(--green-bg);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  margin-bottom: 36px;
}
.version-banner .v-tag {
  background: var(--green); color: #fff;
  font-weight: 700; font-size: 13px;
  border-radius: 6px; padding: 3px 10px;
}
.version-banner .v-note { font-size: 14px; color: var(--ink-2); flex: 1; min-width: 240px; }

/* 下载卡片 */
.dl-platform-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 48px; }
.dl-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  text-align: center;
}
.dl-card .os-name { font-size: 19px; font-weight: 700; margin: 12px 0 4px; }
.dl-card .os-arch { font-size: 13px; color: var(--ink-3); margin-bottom: 18px; }
.dl-card .dl-note { font-size: 12.5px; color: var(--ink-3); margin-top: 12px; }

/* 版本表格 */
.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
table.dl-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 720px; }
.dl-table th, .dl-table td { text-align: left; padding: 13px 18px; border-bottom: 1px solid var(--line); }
.dl-table th { background: var(--bg-soft); font-weight: 700; color: var(--ink-2); white-space: nowrap; }
.dl-table tr:last-child td { border-bottom: none; }
.dl-table td { color: var(--ink-2); }
.dl-table .t-name { font-weight: 600; color: var(--ink); white-space: nowrap; }
.dl-table code { font-family: var(--mono); font-size: 13px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 4px; padding: 1px 6px; }

/* 帮助步骤 / 文档 */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: step; }
.step-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; position: relative; }
.step-card .step-no {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--green); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 15px;
  margin-bottom: 14px;
}
.step-card h3 { font-size: 16.5px; margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--ink-3); }

.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; margin-bottom: 14px; overflow: hidden; }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 15.5px;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--green-dark); font-weight: 400; transition: transform 0.2s; }
.faq-item[open] summary::after { content: "−"; }
.faq-item .faq-body { padding: 0 20px 16px; font-size: 14.5px; color: var(--ink-2); }
.faq-item .faq-body p + p { margin-top: 8px; }

/* CTA */
.cta-band { background: linear-gradient(135deg, var(--green-deep) 0%, var(--green-dark) 100%); color: #fff; text-align: center; padding: 64px 24px; }
.cta-band h2 { font-size: 28px; margin-bottom: 12px; }
.cta-band p { color: #d9efdd; margin-bottom: 26px; }
.cta-band .btn { background: #fff; color: var(--green-dark); }

/* 关于页数字 */
.about-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.about-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.about-card h3 { font-size: 17px; margin-bottom: 10px; }
.about-card p, .about-card li { font-size: 14.5px; color: var(--ink-2); }
.about-card ul { margin-top: 8px; }

/* 页脚 */
.site-footer { background: var(--ink); color: #aebbb3; padding: 56px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 19px; margin-bottom: 14px; }
.site-footer p { color: #8fa398; }
.site-footer h4 { color: #e6efe9; font-size: 14.5px; margin-bottom: 14px; }
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: #aebbb3; }
.footer-col a:hover { color: var(--green-light); }
.footer-bottom { border-top: 1px solid #2b3a31; padding: 18px 0; font-size: 13px; color: #7f938a; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ---------- 下载弹窗 ---------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(10, 18, 14, 0.55);
  display: none;
  align-items: center; justify-content: center;
  z-index: 1000;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.2s;
}
.modal-overlay.open { display: flex; opacity: 1; }
.modal-box {
  background: #fff;
  border-radius: 16px;
  max-width: 720px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
  padding: 32px;
  position: relative;
}
.modal-close {
  position: absolute; top: 14px; right: 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  width: 34px; height: 34px;
  font-size: 18px; line-height: 1;
  cursor: pointer; color: var(--ink-2);
}
.modal-close:hover { background: var(--green-bg); color: var(--green-dark); }
.modal-box h3 { font-size: 20px; margin-bottom: 6px; }
.modal-sub { font-size: 13.5px; color: var(--ink-3); margin-bottom: 24px; }
.qr-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.qr-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 16px;
  text-align: center;
  background: var(--bg-soft);
}
.qr-box {
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 200px;
  margin: 0 auto 14px;
  background: #fff;
  border: 2px dashed var(--green-light);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-3);
  font-size: 12.5px;
  overflow: hidden;
}
.qr-box img { width: 100%; height: 100%; object-fit: contain; }
.qr-item .qr-name { font-weight: 700; font-size: 15px; }
.qr-item .qr-tip { font-size: 12.5px; color: var(--ink-3); margin-top: 2px; }
.modal-foot { margin-top: 22px; font-size: 12.5px; color: var(--ink-3); text-align: center; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: 34px; }
  .scene-grid, .feat-grid, .steps-grid, .dl-platform-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 16px 24px 20px;
    gap: 14px;
    box-shadow: var(--shadow-lg);
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .nav-actions .btn-ghost { display: none; }
  .qr-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .section { padding: 52px 0; }
  .hero { padding: 48px 0; }
  .hero h1 { font-size: 28px; }
  .scene-grid, .feat-grid, .steps-grid, .dl-platform-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-actions .btn { width: 100%; }
}

/* 无障碍：键盘焦点 */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--green-dark);
  outline-offset: 2px;
  border-radius: 4px;
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}