/* ============================================================
   USHOW — 新增模块样式（询盘表单 / 移动端汉堡菜单 / 详情页新增区块）
   依据 docs/design-spec.md v1.0，追加于 style.css / apple.css 之后。
   不改主色、不改字体栈；新增语义色仅做「文字 + 浅底 + 边框」三件套。
   ============================================================ */

:root {
  --danger: #B3261E;
  --danger-soft: #FDECEA;
  --success: #3B6D11;
  --success-soft: #EAF3DE;
  --success-line: #C6E0A8;
  --placeholder: #9AA9AE;
}

[hidden] { display: none !important; }

/* ============================================================
   1. 询盘表单
   ============================================================ */
.inquiry-card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 34px;
}

.inquiry-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 24px;
}

.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }

.field label {
  font-size: 14px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--ink);
}
.field .req { color: var(--danger); margin-left: 2px; }

.field input,
.field select,
.field textarea {
  width: 100%;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input, .field select { height: 48px; padding: 0 16px; }
.field textarea { min-height: 128px; padding: 14px 16px; resize: vertical; }
.field input::placeholder,
.field textarea::placeholder { color: var(--placeholder); }

.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 40px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4' fill='none' stroke='%23226D7A' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.field input:hover, .field select:hover, .field textarea:hover { border-color: #B7CDD3; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(34,109,122,0.18);
}

.field.is-error input,
.field.is-error select,
.field.is-error textarea {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(179,38,30,0.12);
}

.field-error {
  font-size: 13px;
  line-height: 1.5;
  font-weight: 500;
  color: var(--danger);
}
.field-error:empty { display: none; }

.inquiry-actions {
  grid-column: 1 / -1;
  margin-top: 4px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px 20px;
}
.inquiry-submit { min-width: 180px; }
.inquiry-hint {
  flex: 1 1 240px;
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

/* 首页留资区：按钮压在上面、提示在下面，整体居中（产品页表单仍保持左对齐） */
#contact .inquiry-actions {
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
#contact .inquiry-hint {
  flex: 0 0 auto;
  text-align: center;
}

.inquiry-copy {
  margin-left: 6px;
  padding: 3px 11px;
  border: 1px solid var(--success-line);
  border-radius: 999px;
  background: #fff;
  color: var(--success);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.inquiry-copy:hover { background: var(--success); border-color: var(--success); color: #fff; }

/* 剪贴板不可用时的兜底：把询盘内容摊开并全选，用户手动 Ctrl+C 即可 */
.inquiry-copy-src {
  display: block;
  width: 100%;
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid var(--success-line);
  border-radius: 8px;
  background: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink);
  resize: vertical;
}
.inquiry-copy-src[hidden] { display: none; }

.inquiry-success {
  display: none;
  grid-column: 1 / -1;
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid var(--success-line);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.5;
}
.inquiry-success.is-visible { display: block; }
.inquiry-success a { color: var(--success); font-weight: 600; text-decoration: underline; }

.inquiry-fallback {
  grid-column: 1 / -1;
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
}
.inquiry-fallback a { color: var(--primary); font-weight: 600; text-decoration: underline; }

/* 深底 Hero 的描边按钮（避免内联硬编码色值） */
.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.7);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.12); color: #fff; }

@media (max-width: 560px) {
  .inquiry-card { padding: 24px; border-radius: 14px; }
  .inquiry-form { grid-template-columns: 1fr; }
  .inquiry-actions { flex-direction: column; align-items: stretch; gap: 10px; }
  .inquiry-submit { width: 100%; justify-content: center; }
  /* 纵向排列时 flex-basis 会作用到高度上，必须放开 */
  .inquiry-hint { flex: 0 0 auto; text-align: center; }
  /* 手机端详情页区块间距收小 */
  .pd-cardlib { padding: 0 0 48px; }
  .pd-cardlib .apple-section-title { padding: 0 0 20px; }
  .pd-cases { padding: 0 0 48px; }
  .pd-cases .apple-section-title { padding: 0 0 22px; }
  .pd-features { padding-bottom: 48px; }
  .apple-spec-table th, .apple-spec-table td { font-size: 13px; padding: 10px 0; }
}

/* ============================================================
   2. 移动端汉堡菜单（断点沿用 960px，面板锚定导航条下方）
   ============================================================ */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: 8px;
  color: #fff;
}
.nav.scrolled .nav-toggle,
.nav.nav-light .nav-toggle { color: var(--ink); }

.nav-toggle .bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: #FFFFFF;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 16px 32px rgba(14,46,53,0.12);
  padding: 12px 24px 24px;
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
}
.mobile-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }

.mobile-menu a.mm-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.mobile-menu a.mm-link:hover { color: var(--primary); }
.mobile-menu .mm-cta { margin-top: 20px; width: 100%; }

@media (max-width: 960px) {
  .nav-toggle { display: flex; }
}
@media (max-width: 560px) {
  .nav-cta .btn { display: none; }
}

/* ============================================================
   3. 产品详情页新增区块
   ============================================================ */
.pd-breadcrumb {
  padding: 20px 0 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
}
.pd-breadcrumb a { color: var(--muted); }
.pd-breadcrumb a:hover { color: var(--primary); }
.pd-breadcrumb .sep { margin: 0 8px; color: var(--placeholder); }

.pd-about { padding: 72px 0 0; }
.pd-about h2 {
  text-align: center;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--apple-ink, #1D1D1F);
  margin-bottom: 20px;
}
.pd-about p {
  max-width: 720px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.75;
  color: var(--apple-gray, #6E6E73);
}

.pd-features { padding: 64px 0; }
.pd-features .apple-section-title,
.pd-gallery .apple-section-title { padding: 0 0 32px; }
.pd-features-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px 56px;
}
.feature-item { display: flex; gap: 12px; align-items: flex-start; }
.feature-item .fi-ico {
  flex: none;
  width: 28px;
  height: 28px;
  margin-top: 1px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
}
.feature-item span { font-size: 16px; line-height: 1.5; font-weight: 500; color: var(--apple-ink, #1D1D1F); }

.pd-gallery { padding: 0 0 80px; }
.pd-gallery-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
.pd-gallery-grid .apple-detail-media { aspect-ratio: 4 / 3; border-radius: 24px; }

/* ---------- 细节+色卡 2×2（四格横图） ---------- */
.pd-merged-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 32px;
}
.pd-merged-grid figure { margin: 0; }
.pd-merged-grid .apple-detail-media {
  aspect-ratio: 4 / 3;
  border-radius: 24px;
  overflow: hidden;
}
.pd-merged-grid figcaption {
  text-align: center;
  font-size: 13.5px;
  color: var(--apple-gray, #6E6E73);
  margin-top: 10px;
}

/* ---------- 色卡全貌（仅当前产品，竖屏图；一行均分宽度） ---------- */
.pd-cardlib { padding: 0 0 80px; }
.pd-cardlib .apple-section-title { padding: 0 0 28px; }
.pd-cardlib-row { display: flex; gap: 32px; }
.pd-cardlib-row figure { margin: 0; flex: 1 1 0; min-width: 0; cursor: zoom-in; }
.pd-cardlib-row img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 20px;
  display: block;
  background: var(--apple-card, #fff);
}
.pd-cardlib-dl {
  margin-top: 28px;
  text-align: center;
}

/* ---------- 色卡灯箱（点击缩略图看高清大图） ---------- */
.lb {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lb[hidden] { display: none; }
.lb img {
  max-width: 92vw;
  max-height: 84vh;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.lb-close {
  position: absolute;
  top: 18px;
  right: 22px;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}
.lb-close:hover { background: rgba(255, 255, 255, 0.28); }
.lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 32px;
  line-height: 1;
  cursor: pointer;
}
.lb-nav:hover { background: rgba(255, 255, 255, 0.28); }
.lb-prev { left: 18px; }
.lb-next { right: 18px; }
.lb-nav:disabled { opacity: 0.25; cursor: default; }
.lb-count {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 14px;
  background: rgba(0, 0, 0, 0.45);
  padding: 6px 16px;
  border-radius: 20px;
}

@media (max-width: 560px) {
  .pd-merged-grid { gap: 14px; }
  .pd-merged-grid--gallery { grid-template-columns: 1fr; }
  .pd-cardlib-row { gap: 14px; }
}

.pd-cases { padding: 0 0 80px; }
.pd-cases .apple-section-title { padding: 0 0 32px; }
.pd-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.case-card .case-media {
  aspect-ratio: 4 / 3;
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 16px;
}
.case-card .case-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.case-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--apple-ink, #1D1D1F);
  margin-bottom: 6px;
}
.case-card p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--apple-gray, #6E6E73);
}

.pd-notfound { text-align: center; padding: 96px 0 120px; }
.pd-notfound h2 {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--apple-ink, #1D1D1F);
  margin-bottom: 16px;
}
.pd-notfound p {
  font-size: 17px;
  color: var(--apple-gray, #6E6E73);
  margin-bottom: 32px;
}

/* 产品卡徽标（数据驱动：Ready Stock / Color Card，不沿用 dealer 语义） */
.apple-badge.stock { background: #EAF3DE; color: #3B6D11; }
.apple-badge.colorcard { background: var(--accent-soft); color: var(--primary); }

@media (max-width: 560px) {
  .pd-about { padding: 48px 0 0; }
  .pd-features { padding: 48px 0; }
  .pd-features-grid { gap: 16px 32px; }
  .pd-gallery-grid { grid-template-columns: 1fr; }
  .pd-cases { padding: 0 0 56px; }
  .pd-cases-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   4. 无障碍 · 动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .nav-toggle .bar { transition: none; }
  .mobile-menu { transition: none; }
  html { scroll-behavior: auto; }
}