/* ========== 移动端响应式增强 mobile.css（在 style.css 之后加载）========== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; overflow-x: hidden; }
img, svg { max-width: 100%; }
/* 防止宽容器横向溢出 */
.page-container, .container, main, .main-content, .card, .modal-content, .feedback-modal { max-width: 100%; }

/* 汉堡开关：桌面端隐藏 */
.nav-toggle { display: none !important; }
.nav-toggle-label { display: none; }

/* ================= 平板 / 手机（≤768px） ================= */
@media (max-width: 768px) {
  /* 顶部信息条在手机端隐藏（内容冗余） */
  .top-bar { display: none !important; }

  /* ---- 导航栏 ---- */
  .navbar { height: auto !important; min-height: 56px !important; padding: 0 !important; }
  .nav-inner { flex-wrap: nowrap !important; padding: 0 16px !important; gap: 10px; position: relative; height: 56px !important; }
  .nav-brand a { font-size: 18px !important; letter-spacing: 0 !important; white-space: nowrap; }
  .nav-links { order: 1; display: none !important; position: absolute; top: 56px; left: 0; right: 0;
    flex-direction: column !important; gap: 0 !important; background: #fff; border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 8px 20px rgba(0,0,0,0.12); padding: 4px 16px; z-index: 200; }
  #navToggle:checked ~ .nav-links { display: flex !important; }
  .nav-links a { font-size: 15px !important; padding: 13px 0 !important; border-bottom: 1px solid #f0f0f0 !important; white-space: nowrap; }
  .nav-links a:last-child { border-bottom: none !important; }
  .nav-user { order: 2; display: flex; align-items: center; }
  .nav-login-btn { padding: 6px 12px !important; font-size: 13px !important; white-space: nowrap; }
  .nav-toggle-label { order: 3; margin-left: auto; display: flex !important; flex-direction: column;
    justify-content: center; align-items: center; gap: 4px; width: 36px; height: 36px; cursor: pointer; padding: 6px; }
  .nav-toggle-label span { display: block; width: 22px; height: 2px; background: #004898; border-radius: 2px; }

  /* ---- 横幅 ---- */
  .hero { height: auto !important; min-height: 0 !important; padding: 52px 18px 44px; }
  .hero-content { width: 100%; }
  .hero h1 { font-size: clamp(22px, 6.4vw, 30px) !important; letter-spacing: 1px !important;
    margin-bottom: 14px !important; line-height: 1.35 !important; }
  .hero-subtitle { font-size: 13.5px !important; letter-spacing: 1px !important; margin-bottom: 26px !important; line-height: 1.7; }
  .hero-btns { flex-direction: column !important; gap: 12px !important; width: 100%; max-width: 330px; margin: 0 auto; }
  .hero-btn { width: 100%; padding: 12px 14px !important; font-size: 15px !important; letter-spacing: 1px !important; white-space: nowrap; }

  /* ---- 功能入口图标：4 列均分 ---- */
  .entry-icons { display: grid !important; grid-template-columns: repeat(4, 1fr); gap: 14px !important; padding: 30px 12px; }
  .entry-icon-circle { width: 54px; height: 54px; margin-bottom: 8px; }
  .entry-icon-circle svg { width: 24px; height: 24px; }
  .entry-icon-label { font-size: 13px; text-align: center; }
  .entry-icon-item > span[style*="11px"] { font-size: 10px !important; text-align: center; line-height: 1.4; }

  /* ---- 内容区块 / 卡片 ---- */
  .section { padding: 42px 16px !important; }
  .section-title { font-size: 21px !important; margin-bottom: 30px !important; }
  .card-grid { grid-template-columns: 1fr !important; gap: 20px; }
  .feature-card { padding: 22px 18px !important; }

  /* ---- 页脚 ---- */
  .footer-inner { grid-template-columns: 1fr !important; gap: 26px !important; padding: 40px 20px !important; }
  .footer-col { margin: 0 !important; }

  /* ---- 悬浮“提建议”按钮缩小避让 ---- */
  .feedback-fab { right: 12px !important; bottom: 64px !important; padding: 8px 13px !important; font-size: 12.5px !important; }

  /* ---- 内页通用 ---- */
  .page-container { padding: 16px !important; }
  .page-title { font-size: 20px !important; line-height: 1.4; }
  .page-desc { font-size: 13.5px; }
  .operation-guide { padding: 14px !important; font-size: 13px; }
  .guide-list { padding-left: 20px; margin: 8px 0; }
  .card { padding: 16px !important; }
  .btn { white-space: nowrap; }
  /* 宽表格横向滚动兜底 */
  table { display: block; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
}

/* ================= 主流手机（≤480px） ================= */
@media (max-width: 480px) {
  .nav-inner { padding: 0 12px !important; gap: 8px; }
  .nav-brand a { font-size: 17px !important; }
  .nav-login-btn { padding: 6px 10px !important; font-size: 12.5px !important; }
  .hero { padding: 44px 14px 38px; }
  .hero-btns { max-width: 100%; }
  .entry-icons { gap: 8px !important; padding: 26px 8px; }
  .entry-icon-circle { width: 48px; height: 48px; }
  .entry-icon-label { font-size: 12px; }
  .section { padding: 34px 12px !important; }
}

/* ================= 超窄机型（≤360px，如小屏安卓 / iPhone SE） ================= */
@media (max-width: 360px) {
  .hero h1 { font-size: 21px !important; }
  .entry-icon-circle { width: 44px; height: 44px; }
}

/* ================= 内页上传区手机端细化 ================= */
@media (max-width: 768px) {
  /* 第一排：招标文件 / 营业执照 单列堆叠 */
  .upload-grid-row { grid-template-columns: 1fr !important; gap: 16px !important; margin-bottom: 20px; }
  .upload-area { padding: 24px 14px; }
  .upload-notice { font-size: 12px; padding-right: 68px; }
  .upload-notice p { margin: 4px 0; line-height: 1.6; }
  /* 固定格式多选：手机端 2 列 */
  .upload-col-full .fixed-templates-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 8px; }
  .fixed-template-item { font-size: 11px; padding: 7px 6px; }
  .template-count-inline { display: block; margin: 6px 0 0; line-height: 1.6; }
  /* 悬浮按钮更小、贴底，减少遮挡（单列后上传卡片全宽，居中文字不再被压） */
  .feedback-fab { right: 12px !important; bottom: 16px !important; padding: 7px 11px !important; font-size: 11.5px !important; }
}
@media (max-width: 360px) {
  .upload-col-full .fixed-templates-grid { grid-template-columns: 1fr !important; }
}