/* =========================================================
   270号仓库官网样式
   基准宽度 1920，内容区 1320 居中，全宽铺满
   ========================================================= */
:root {
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --blue-light: #EFF4FF;
  --ink: #18181B;
  --gray: #52525B;
  --gray-light: #A1A1AA;
  --bg-soft: #F9F9FB;
  --footer-bg: #1F2937;
  --radius-lg: 16px;
  --shadow-card: 0 4px 12px rgba(23, 33, 64, 0.05);
  --shadow-window: 0 20px 48px rgba(23, 33, 64, 0.14);
  --shadow-float: 0 10px 28px rgba(23, 33, 64, 0.16);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }

.container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all .2s ease;
  font-family: inherit;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-lg { height: 56px; padding: 0 32px; font-size: 17px; box-shadow: 0 6px 16px rgba(37, 99, 235, 0.30); }
.btn-sm { height: 40px; padding: 0 22px; font-size: 14px; border-radius: 10px; }
.btn-sm:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28); }

/* ============ Header ============ */
.header {
  height: 72px;
  border-bottom: 1px solid #EDEDF2;
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: var(--blue);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; letter-spacing: .5px;
}
.logo-name { font-size: 24px; font-weight: 700; color: var(--ink); }

/* ============ Hero ============ */
.hero {
  background: linear-gradient(90deg, #FFFFFF 0%, #EDF1FF 100%);
  border-bottom: 1px solid #EDEDF2;
}
.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 80px;
  padding: 112px 40px;
}
.hero-text { flex: 0 0 620px; }
.badge {
  display: inline-block;
  height: 36px;
  line-height: 36px;
  padding: 0 16px;
  border-radius: 999px;
  background: #EFF4FF;
  color: var(--blue);
  font-size: 14px; font-weight: 500;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 72px;
  font-weight: 700;
  line-height: 1.16;
  color: var(--ink);
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 20px;
  line-height: 1.7;
  color: var(--gray);
  max-width: 580px;
  margin-bottom: 36px;
}
.cta-row { margin-bottom: 40px; }
.trust-row { display: flex; gap: 28px; color: var(--gray); font-size: 16px; }
.trust-row span { position: relative; }
.trust-row span + span::before {
  content: "";
  position: absolute; left: -14px; top: 50%;
  width: 4px; height: 4px; border-radius: 50%;
  background: #D4D4D8; transform: translateY(-50%);
}

/* ---------- 搜索框 ---------- */
.hero-search {
  flex-shrink: 0;
  width: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.search-box {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border: 1px solid #E5E7EB;
  border-radius: 16px;
  padding: 6px 6px 6px 18px;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.08);
  transition: box-shadow .2s ease, border-color .2s ease;
}
.search-box:focus-within {
  border-color: var(--blue);
  box-shadow: 0 4px 24px rgba(37, 99, 235, 0.16);
}
.search-box svg { width: 22px; height: 22px; color: #9CA3AF; flex-shrink: 0; }
.search-box input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 16px;
  font-family: inherit;
  color: var(--ink);
  background: transparent;
  height: 44px;
}
.search-box input::placeholder { color: #9CA3AF; }
.search-box .btn { height: 44px; padding: 0 24px; border-radius: 12px; font-size: 15px; font-weight: 500; flex-shrink: 0; }
.search-hint {
  font-size: 14px;
  color: var(--gray-light);
  display: flex;
  gap: 8px;
  align-items: center;
}
.search-hint .tag {
  font-size: 12px;
  color: var(--blue);
  background: #EFF4FF;
  border-radius: 999px;
  padding: 3px 10px;
  cursor: pointer;
  transition: background .2s;
}
.search-hint .tag:hover { background: #DBEAFE; }
.search-count {
  font-size: 14px;
  color: var(--gray);
  margin-top: 4px;
}

/* ---------- 窗口叠层视觉（已废弃，保留兼容） ---------- */
.hero-visual {
  position: relative;
  width: 620px;
  height: 470px;
  flex-shrink: 0;
}
.window {
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow-window);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.window-bar {
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid #EDEDF2;
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #FF5F57; }
.dot-yellow { background: #FEBC2E; }
.dot-green { background: #28C840; }
.window-addr {
  flex: 1;
  height: 30px;
  border-radius: 8px;
  background: #F4F4F5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--gray-light);
}
.window-body {
  flex: 1;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.w-head { display: flex; justify-content: space-between; align-items: center; }
.w-title { font-size: 17px; font-weight: 700; }
.w-more { font-size: 13px; color: var(--blue); }
.w-search {
  height: 38px;
  border-radius: 8px;
  background: #F4F4F5;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  color: var(--gray-light);
  font-size: 13px;
}
.w-search svg { width: 16px; height: 16px; }
.w-app {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #F9F9FB;
  border-radius: 10px;
  padding: 12px 14px;
}
.w-app-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--blue);
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.w-app-icon svg { width: 20px; height: 20px; }
.w-app-info { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.w-app-name { font-size: 14px; font-weight: 600; }
.w-app-ver { font-size: 12px; color: var(--gray-light); }
.w-app-btn {
  height: 30px;
  padding: 0 14px;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  font-size: 12px;
  display: inline-flex; align-items: center;
}

/* 悬浮卡片 */
.float-card {
  position: absolute;
  background: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-float);
}
.float-ocr {
  left: 16px;
  bottom: 26px;
  width: 238px;
  padding: 14px;
}
.float-ocr p { font-size: 12px; color: #71717A; line-height: 18px; }
.float-card-head { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; margin-bottom: 8px; }
.float-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }
.float-toast {
  right: 6px;
  bottom: 22px;
  width: 282px;
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.toast-check {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: #10B981;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.toast-check svg { width: 18px; height: 18px; }
.toast-title { font-size: 14px; font-weight: 600; }
.toast-sub { font-size: 12px; color: #71717A; }

/* ============ 软件列表 ============ */
.apps {
  background: var(--bg-soft);
  padding: 104px 0;
}

/* ---------- 分类筛选标签 ---------- */
.category-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.cat-tag {
  font-size: 14px;
  color: var(--gray);
  background: #fff;
  border: 1px solid var(--line, #E6E7EB);
  border-radius: 999px;
  padding: 8px 20px;
  cursor: pointer;
  transition: all .2s ease;
}
.cat-tag:hover { border-color: var(--blue); color: var(--blue); }
.cat-tag.active {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
  font-weight: 500;
}
.section-head { margin-bottom: 48px; }
.section-head h2 { font-size: 36px; font-weight: 700; margin-bottom: 12px; }
.section-head p { font-size: 18px; color: var(--gray); }
.app-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.app-card {
  background: #fff;
  border: 1px solid #EDEDF2;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.app-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(23, 33, 64, 0.10); }
.app-icon {
  width: 56px; height: 56px;
  border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
}
.app-icon svg { width: 26px; height: 26px; }
.app-name { font-size: 24px; font-weight: 600; }
.app-desc { font-size: 16px; color: var(--gray); line-height: 1.75; }
.app-meta { font-size: 14px; color: var(--gray-light); }
.app-foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.app-dl-count { font-size: 14px; color: #71717A; }
.app-dl-btn {
  height: 40px;
  padding: 0 22px;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  display: inline-flex; align-items: center;
  cursor: pointer;
  border: none;
  transition: background .2s ease;
  font-family: inherit;
}
.app-dl-btn:hover { background: var(--blue-dark); }
.app-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.app-tag {
  font-size: 12px;
  color: var(--blue);
  background: #EFF4FF;
  border-radius: 999px;
  padding: 3px 10px;
}

/* ============ Footer ============ */
.footer {
  background: var(--footer-bg);
  padding: 64px 0 40px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 48px;
}
.footer-logo-row { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-name { font-size: 20px; font-weight: 700; color: #fff; }
.footer-tag { font-size: 14px; color: #A1A1AA; }
.footer-links { display: flex; gap: 72px; }
.footer-links-simple { display: flex; gap: 32px; align-items: center; }
.footer-links-simple a { font-size: 14px; color: #A1A1AA; transition: color .2s; text-decoration: none; }
.footer-links-simple a:hover { color: #fff; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 0; }
.footer-col a { font-size: 14px; color: #A1A1AA; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-divider { height: 1px; background: rgba(255,255,255,0.10); margin-bottom: 40px; }
.footer-bottom { display: flex; justify-content: space-between; font-size: 13px; color: #71717A; }

.btn-outline {
  background: transparent;
  color: var(--blue);
  border: 1.5px solid var(--blue);
}
.btn-outline:hover {
  background: var(--blue);
  color: #fff;
}

/* ============ 返回首页按钮 ============ */
.btn-back-home {
  display: inline-flex; align-items: center; gap: 6px;
  height: 38px; padding: 0 18px;
  border-radius: 10px;
  background: var(--blue-light); color: var(--blue);
  font-size: 14px; font-weight: 500;
  border: 1px solid #DBE5FF;
  transition: all .2s ease;
}
.btn-back-home:hover {
  background: var(--blue); color: #fff;
  border-color: var(--blue);
}
.btn-back-home svg { width: 16px; height: 16px; }

.back-home-bottom {
  text-align: center;
  padding: 0 0 96px;
}
.back-home-bottom .btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  height: 50px; padding: 0 36px;
  border-radius: 12px;
  background: var(--blue); color: #fff;
  font-size: 15px; font-weight: 500;
  border: none; cursor: pointer;
  transition: background .2s, transform .2s;
}
.back-home-bottom .btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
}
.back-home-bottom .btn-primary svg { width: 18px; height: 18px; }

/* ============ 关于我们页面 ============ */
.about-hero {
  background: linear-gradient(135deg, #FFFFFF 0%, #EDF1FF 60%, #DBE5FF 100%);
  padding: 100px 0 120px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.about-hero::before {
  content: "";
  position: absolute;
  top: -120px; right: -80px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
}
.about-hero::after {
  content: "";
  position: absolute;
  bottom: -100px; left: -60px;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,0.04) 0%, transparent 70%);
}
.hero-badge {
  display: inline-block;
  height: 36px; line-height: 36px;
  padding: 0 18px; border-radius: 999px;
  background: #fff; color: var(--blue);
  font-size: 14px; font-weight: 500;
  margin-bottom: 28px;
  box-shadow: 0 2px 8px rgba(37,99,235,0.08);
}
.hero-title {
  font-size: 56px; font-weight: 700;
  line-height: 1.2; color: var(--ink);
  margin-bottom: 24px;
  position: relative; z-index: 1;
}
.hero-sub {
  font-size: 19px; line-height: 1.8;
  color: var(--gray);
  max-width: 680px; margin: 0 auto;
  position: relative; z-index: 1;
}
.stats-row {
  display: flex;
  justify-content: center;
  gap: 64px;
  margin-top: 56px;
  position: relative; z-index: 1;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 42px; font-weight: 700;
  color: var(--blue);
  line-height: 1;
}
.stat-label {
  font-size: 15px; color: var(--gray);
  margin-top: 8px;
}
.stat-divider {
  width: 1px; height: 48px;
  background: #D4D4D8;
  align-self: center;
}

/* Section */
.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-head h2 {
  font-size: 36px; font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 18px; color: var(--gray);
  max-width: 560px; margin: 0 auto;
}

/* Principle Cards */
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.principle-card {
  background: #fff;
  border: 1px solid #EDEDF2;
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform .2s ease, box-shadow .2s ease;
}
.principle-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(23, 33, 64, 0.10);
}
.principle-icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
}
.principle-icon svg { width: 30px; height: 30px; }
.icon-blue { background: #EFF4FF; }
.icon-blue svg { color: var(--blue); }
.icon-green { background: #ECFDF5; }
.icon-green svg { color: #10B981; }
.icon-orange { background: #FFF7ED; }
.icon-orange svg { color: #F97316; }
.principle-card h3 {
  font-size: 20px; font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
}
.principle-card p {
  font-size: 15px; color: var(--gray);
  line-height: 1.75;
}

/* Story Section */
.story-layout {
  display: flex;
  align-items: center;
  gap: 64px;
}
.story-text { flex: 1; }
.story-text h2 {
  font-size: 32px; font-weight: 700;
  color: var(--ink);
  margin-bottom: 20px;
}
.story-text p {
  font-size: 16px; color: var(--gray);
  line-height: 1.9;
  margin-bottom: 16px;
}
.story-visual {
  flex-shrink: 0;
  width: 440px;
  height: 340px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-window);
  position: relative;
  overflow: hidden;
}
.story-visual::before {
  content: "270";
  font-size: 200px;
  font-weight: 800;
  color: rgba(255,255,255,0.08);
  position: absolute;
  line-height: 1;
}
.story-visual-text {
  text-align: center;
  color: #fff;
  position: relative; z-index: 1;
}
.story-visual-text .big {
  font-size: 28px; font-weight: 700;
  margin-bottom: 8px;
}
.story-visual-text .small {
  font-size: 15px;
  opacity: 0.85;
}

/* Contact */
.contact-card {
  background: #fff;
  border: 1px solid #EDEDF2;
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  box-shadow: var(--shadow-card);
  max-width: 760px;
  margin: 0 auto;
}
.contact-card h2 {
  font-size: 28px; font-weight: 700;
  margin-bottom: 16px;
}
.contact-card p {
  font-size: 16px; color: var(--gray);
  line-height: 1.8;
  margin-bottom: 32px;
}
.contact-methods {
  display: flex;
  justify-content: center;
  gap: 24px;
}
.contact-method {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 20px 28px;
  transition: transform .2s ease;
}
.contact-method:hover { transform: translateY(-2px); }
.contact-method-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--blue-light);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-method-icon svg { width: 20px; height: 20px; color: var(--blue); }
.contact-method-label { font-size: 13px; color: var(--gray-light); }
.contact-method-value { font-size: 16px; font-weight: 500; color: var(--ink); }

/* ============ 常见问题页面 ============ */
.faq-hero {
  background: linear-gradient(135deg, #FFFFFF 0%, #EDF1FF 100%);
  padding: 80px 0 64px;
  text-align: center;
  border-bottom: 1px solid #EDEDF2;
}
.faq-hero h1 {
  font-size: 48px; font-weight: 700; color: var(--ink);
  margin-bottom: 16px;
}
.faq-hero p {
  font-size: 18px; color: var(--gray);
  max-width: 560px; margin: 0 auto 36px;
}
.faq-search-wrap {
  max-width: 600px; margin: 0 auto;
  position: relative;
}
.faq-search {
  display: flex; align-items: center; gap: 10px;
  background: #fff;
  border: 1.5px solid #E5E7EB;
  border-radius: 14px;
  padding: 8px 8px 8px 20px;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.08);
  transition: box-shadow .2s ease, border-color .2s ease;
}
.faq-search:focus-within {
  border-color: var(--blue);
  box-shadow: 0 4px 24px rgba(37, 99, 235, 0.16);
}
.faq-search svg { width: 20px; height: 20px; color: #9CA3AF; flex-shrink: 0; }
.faq-search input {
  flex: 1; border: none; outline: none;
  font-size: 16px; font-family: inherit; color: var(--ink);
  background: transparent; height: 40px;
}
.faq-search input::placeholder { color: #9CA3AF; }

.category-tabs {
  display: flex; justify-content: center; gap: 10px;
  flex-wrap: wrap; margin-top: 32px;
}
.cat-pill {
  font-size: 14px; color: var(--gray);
  background: #fff; border: 1px solid #E6E7EB;
  border-radius: 999px; padding: 8px 20px;
  cursor: pointer; transition: all .2s ease;
}
.cat-pill:hover { border-color: var(--blue); color: var(--blue); }
.cat-pill.active {
  background: var(--blue); color: #fff;
  border-color: var(--blue); font-weight: 500;
}

.faq-section { padding: 72px 0 96px; background: var(--bg-soft); }
.faq-list {
  max-width: 840px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 16px;
}
.faq-card-loading {
  text-align: center; padding: 48px;
  color: var(--gray-light); font-size: 15px;
}
.faq-card {
  background: #fff;
  border: 1px solid #EDEDF2;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow .2s ease, border-color .2s ease;
}
.faq-card:hover {
  border-color: #C7D2FE;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.08);
}
.faq-card-header {
  display: flex; align-items: center; gap: 16px;
  padding: 22px 28px;
  cursor: pointer;
  transition: background .2s ease;
}
.faq-card-header:hover { background: #FAFAFC; }
.faq-q-badge {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--blue-light);
  color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
  flex-shrink: 0;
}
.faq-card-title {
  flex: 1;
  font-size: 17px; font-weight: 600;
  color: var(--ink);
}
.faq-toggle {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-light);
  transition: transform .3s ease, color .2s;
  flex-shrink: 0;
}
.faq-card.open .faq-toggle {
  transform: rotate(180deg);
  color: var(--blue);
}
.faq-toggle svg { width: 18px; height: 18px; }
.faq-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.faq-card.open .faq-card-body {
  max-height: 300px;
}
.faq-card-answer {
  padding: 0 28px 24px 76px;
  font-size: 15px; color: var(--gray);
  line-height: 1.85;
}
.faq-card-answer a { color: var(--blue); }
.faq-card-answer a:hover { text-decoration: underline; }

.still-questions {
  max-width: 840px; margin: 48px auto 0;
  text-align: center;
  background: #fff;
  border: 1px solid #EDEDF2;
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  box-shadow: var(--shadow-card);
}
.still-questions h3 {
  font-size: 22px; font-weight: 600;
  color: var(--ink); margin-bottom: 10px;
}
.still-questions p {
  font-size: 15px; color: var(--gray);
  margin-bottom: 24px;
}
.still-questions .btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 32px;
  border-radius: 12px;
  background: var(--blue); color: #fff;
  font-size: 15px; font-weight: 500;
  border: none; cursor: pointer;
  transition: background .2s;
}
.still-questions .btn-primary:hover { background: var(--blue-dark); }
.btn-back-text {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 16px;
  font-size: 14px; color: var(--gray);
  transition: color .2s;
}
.btn-back-text:hover { color: var(--blue); }
.btn-back-text svg { width: 16px; height: 16px; }

/* ============ 软件详情页 ============ */
.detail-body {
  background: var(--bg-soft);
}

/* Hero 区 */
.detail-hero { padding: 48px 0 0; }
.detail-hero-card {
  display: flex; gap: 56px; align-items: center;
  background: #fff; border-radius: 20px;
  padding: 56px 64px;
  box-shadow: var(--shadow-card);
}
.detail-hero-left {
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  flex-shrink: 0;
}
.detail-app-icon {
  width: 160px; height: 160px; border-radius: 32px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 32px rgba(37, 99, 235, .2);
}
.detail-app-icon svg { width: 64px; height: 64px; }
.detail-app-iconname { font-size: 20px; font-weight: 700; color: var(--ink); }
.detail-hero-right { flex: 1; min-width: 0; }
.detail-app-title { font-size: 36px; font-weight: 700; color: var(--ink); margin-bottom: 14px; }
.detail-app-desc { font-size: 16px; color: var(--gray); line-height: 1.6; margin-bottom: 18px; }
.detail-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.detail-tag {
  display: inline-flex; align-items: center;
  height: 28px; padding: 0 12px; border-radius: 6px;
  background: #F3F4F6; color: #6B7280;
  font-size: 12px; font-weight: 500;
}
.detail-tag-blue { background: #EFF6FF; color: var(--blue); }
.detail-meta { display: flex; gap: 20px; flex-wrap: wrap; font-size: 13px; color: #9CA3AF; margin-bottom: 22px; }
.detail-dl-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.detail-dl-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-width: 168px; height: 52px; padding: 0 28px;
  border-radius: 12px; background: var(--blue); color: #fff;
  font-size: 16px; font-weight: 600; border: none; cursor: pointer;
  box-shadow: 0 6px 16px rgba(37, 99, 235, .3);
  transition: background .2s, transform .2s;
  position: relative;
  overflow: hidden;
}
.detail-dl-btn:hover { background: var(--blue-dark); transform: translateY(-1px); }
.detail-dl-btn:disabled {
  cursor: default;
  transform: none;
  opacity: 0.95;
}
.dl-icon { font-size: 20px; line-height: 1; }

/* 下载进度条 */
.dl-progress-track {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 100%;
  background: rgba(255,255,255,0.15);
  z-index: 0;
  opacity: 0;
  transition: opacity .2s;
}
.dl-progress-track.active { opacity: 1; }
.dl-progress-fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: rgba(255,255,255,0.35);
  width: 0%;
  transition: width 0.15s linear;
  z-index: 1;
}
.dl-text {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.detail-safety { font-size: 13px; color: #9CA3AF; }

.detail-loading, .detail-error { text-align: center; padding: 120px 0; color: var(--gray); font-size: 16px; }
.detail-error p { margin-bottom: 24px; }

/* 内容区 */
.detail-content { padding: 48px 0 104px; }
.detail-content-inner { display: flex; flex-direction: column; gap: 48px; }
.detail-section-title { font-size: 24px; font-weight: 700; color: var(--ink); margin-bottom: 24px; }

/* 功能特点卡片 */
.detail-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.detail-feat-card {
  background: #fff; border-radius: 16px;
  padding: 28px;
  display: flex; flex-direction: column; gap: 12px;
  box-shadow: var(--shadow-card);
  transition: transform .2s, box-shadow .2s;
}
.detail-feat-card:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(11, 13, 20, .08); }
.detail-feat-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: #EFF6FF; color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
}
.detail-feat-title { font-size: 17px; font-weight: 600; color: var(--ink); }
.detail-feat-desc { font-size: 14px; color: var(--gray); line-height: 1.6; }

/* 详细介绍 */
.detail-card {
  background: #fff; border-radius: 16px;
  padding: 36px 40px;
  box-shadow: var(--shadow-card);
}
.detail-p { font-size: 15px; color: #374151; line-height: 1.8; margin-bottom: 16px; }
.detail-p:last-child { margin-bottom: 0; }

/* 软件截图 */
.detail-shots { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.detail-shot { margin: 0; }
.detail-shot-img {
  border-radius: 16px; overflow: hidden;
  border: 1px solid #ECECF1;
  box-shadow: var(--shadow-card);
  background: #F3F4F6;
}
.detail-shot-img img { display: block; width: 100%; height: auto; min-height: 200px; object-fit: cover; }
.detail-shot figcaption { text-align: center; font-size: 13px; color: #9CA3AF; margin-top: 12px; }

/* 底部下载区 */
.detail-bottom {
  background: #fff; border-radius: 20px;
  padding: 48px 40px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  box-shadow: var(--shadow-card);
}
.detail-bottom-title { font-size: 28px; font-weight: 700; color: var(--ink); }
.detail-bottom-desc { font-size: 15px; color: var(--gray); }
.detail-bottom .detail-dl-btn { min-width: 200px; height: 56px; font-size: 17px; }
.detail-bottom-meta { font-size: 13px; color: #9CA3AF; }

/* 返回首页按钮（Header） */
.back-arrow { font-size: 14px; }

/* ============ 响应式 ============ */
@media (max-width: 1400px) {
  .hero-inner { padding: 96px 40px; gap: 48px; }
  .hero-text { flex-basis: 520px; }
  .hero-title { font-size: 60px; }
  .hero-search { width: 440px; }
}
@media (max-width: 1100px) {
  .hero-inner { flex-direction: column; padding: 72px 24px; }
  .hero-text { flex-basis: auto; max-width: 100%; text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .trust-row { justify-content: center; }
  .hero-search { width: 100%; max-width: 520px; }
  .app-grid { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 40px; }
  .container { padding: 0 24px; }
  /* About page */
  .principle-grid { grid-template-columns: 1fr; }
  .story-layout { flex-direction: column; }
  .story-visual { width: 100%; max-width: 440px; }
  .stats-row { flex-direction: column; gap: 32px; }
  .stat-divider { display: none; }
  .contact-methods { flex-direction: column; }
  /* FAQ page */
  .faq-card-answer { padding-left: 28px; }
  /* Detail page */
  .detail-hero-card { flex-direction: column; text-align: center; padding: 40px 24px; gap: 32px; }
  .detail-hero-right { display: flex; flex-direction: column; align-items: center; }
  .detail-tags { justify-content: center; }
  .detail-meta { justify-content: center; }
  .detail-dl-row { justify-content: center; }
  .detail-features { grid-template-columns: 1fr; }
  .detail-shots { grid-template-columns: 1fr; }
}