@charset "UTF-8";
/* =====================================================================
   QUADRA FIT — 设计系统落地层 (qf-system)
   来源：design-system/DESIGN.md（Google 格式设计规范）
   用途：6 个品牌站共用一套视觉体系；纯 CSS，无框架依赖。
   载入顺序：必须放在各站模板样式（style.css / natural.css）之后。
   ===================================================================== */

/* ---------------------------------------------------------------------
   1. 令牌
   --------------------------------------------------------------------- */
:root {
  /* 颜色 —— 三色基因 + 中性/表面/语义 */
  --qf-primary: #2C3327;
  --qf-secondary: #5F7548;
  --qf-tertiary: #4B5E39;
  --qf-neutral: #FBF8F2;
  --qf-surface: #FFFFFF;
  --qf-surface-alt: #F4F1E8;
  --qf-surface-warm: #EDF1E6;
  --qf-on-primary: #FBF8F2;
  --qf-on-secondary: #FFFFFF;
  --qf-on-surface: #2C3327;
  --qf-on-inverse: #FBF8F2;
  --qf-on-inverse-muted: #C8CFBE;
  --qf-body: #4A5343;
  --qf-muted: #66705A;
  --qf-subtle: #7C8574;
  --qf-border: #E6E2D6;
  --qf-border-soft: #F1EEE4;
  --qf-border-strong: #CFC9B4;
  --qf-selection: rgba(95, 117, 72, .18);
  --qf-scrim: rgba(44, 51, 39, .62);
  --qf-glow-sage: rgba(95, 117, 72, .07);
  --qf-glow-moss: rgba(44, 51, 39, .05);
  --qf-focus-ring: #4B5E39;
  --qf-error: #A8402F;
  --qf-success: #3F6B3A;
  --qf-warning: #8A5A11;
  --qf-channel-whatsapp: #0F7A3D;

  /* 字体栈 */
  --qf-font-display: Georgia, "Iowan Old Style", "Times New Roman", Cambria, "Songti SC", "Noto Serif", serif;
  --qf-font-body: Inter, "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --qf-font-arabic: "Noto Kufi Arabic", "IBM Plex Sans Arabic", Tajawal, "Geeza Pro", "Segoe UI", Tahoma, sans-serif;

  /* 字阶（clamp 连续变化，避免逐断点硬写） */
  --qf-display-xl: clamp(34px, 5.6vw, 72px);
  --qf-display-lg: clamp(30px, 4.2vw, 52px);
  --qf-heading-lg: clamp(26px, 3.1vw, 38px);
  --qf-heading-md: clamp(21px, 2.2vw, 26px);
  --qf-heading-sm: 19px;
  --qf-lede: clamp(17px, 1.6vw, 20px);
  --qf-body-size: 16.5px;
  --qf-body-sm: 14.5px;
  --qf-caption: 13px;
  --qf-label-caps: 11.5px;
  --qf-nav-link: 15px;
  --qf-btn-size: 15px;
  --qf-table: 14.5px;
  --qf-quote: clamp(21px, 2.4vw, 28px);

  /* 圆角 */
  --qf-r-none: 0px;
  --qf-r-xs: 4px;
  --qf-r-sm: 6px;
  --qf-r-md: 8px;
  --qf-r-lg: 12px;
  --qf-r-xl: 16px;
  --qf-r-pill: 9999px;

  /* 间距 */
  --qf-space-xs: 8px;
  --qf-space-sm: 16px;
  --qf-space-md: 24px;
  --qf-space-lg: 32px;
  --qf-space-xl: 48px;
  --qf-space-xxl: 64px;
  --qf-space-xxxl: 96px;
  --qf-section: clamp(56px, 8vw, 112px);
  --qf-gutter: clamp(16px, 2.6vw, 32px);
  --qf-container-max: 1200px;
  --qf-measure-body: 560px;
  --qf-measure-lede: 640px;
  --qf-measure-article: 640px;

  /* 动效 */
  --qf-motion-instant: 100ms;
  --qf-motion-fast: 150ms;
  --qf-motion-base: 240ms;
  --qf-motion-slow: 420ms;
  --qf-ease-standard: cubic-bezier(.2, 0, 0, 1);
  --qf-ease-settle: cubic-bezier(.16, 1, .3, 1);

  /* 深度 */
  --qf-shadow-hover: 0 14px 30px rgba(44, 51, 39, .09);
  --qf-shadow-overlay: 0 18px 40px rgba(16, 27, 23, .13);
  --qf-shadow-nav: 0 8px 24px rgba(44, 51, 39, .06);
}

/* ---------------------------------------------------------------------
   2. 基础与版式
   --------------------------------------------------------------------- */
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body.qf-body,
body {
  background-color: var(--qf-neutral);
  color: var(--qf-body);
  font-family: var(--qf-font-body);
  font-size: var(--qf-body-size);
  line-height: 1.7;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--qf-selection); color: var(--qf-primary); }

/* 语义标题：衬线负责叙事 */
.qf-display-xl, .qf-display-lg, .qf-heading-lg, .qf-heading-md, .qf-heading-sm,
.qf-h1, .qf-h2, .qf-h3 {
  font-family: var(--qf-font-display);
  color: var(--qf-primary);
  font-weight: 600;
  margin: 0 0 var(--qf-space-sm);
  text-wrap: balance;
}
.qf-display-xl { font-size: var(--qf-display-xl); line-height: 1.06; letter-spacing: -.025em; }
.qf-display-lg { font-size: var(--qf-display-lg); line-height: 1.10; letter-spacing: -.022em; }
.qf-heading-lg { font-size: var(--qf-heading-lg); line-height: 1.16; letter-spacing: -.018em; }
.qf-heading-md { font-size: var(--qf-heading-md); line-height: 1.25; letter-spacing: -.012em; }
.qf-heading-sm { font-size: var(--qf-heading-sm); line-height: 1.35; letter-spacing: -.005em; }

.qf-lede { font-size: var(--qf-lede); line-height: 1.55; color: var(--qf-body); max-width: var(--qf-measure-lede); }
.qf-text  { color: var(--qf-body); max-width: var(--qf-measure-body); }
.qf-small { font-size: var(--qf-body-sm); line-height: 1.65; }
.qf-caption { font-size: var(--qf-caption); line-height: 1.6; letter-spacing: .01em; color: var(--qf-muted); }
.qf-muted { color: var(--qf-muted); }

/* 眉题：每屏最多一处 */
.qf-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: var(--qf-label-caps); font-weight: 700; line-height: 1.2;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--qf-secondary); margin: 0 0 var(--qf-space-sm);
}
.qf-eyebrow::before {
  content: ""; display: block; inline-size: 28px; block-size: 1px;
  background: var(--qf-secondary); flex: none;
}

.qf-link {
  color: var(--qf-secondary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--qf-motion-fast) var(--qf-ease-standard);
}
.qf-link:hover, .qf-link:focus { color: var(--qf-tertiary); }

:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--qf-focus-ring);
  outline-offset: 2px;
}

/* ---------------------------------------------------------------------
   3. 布局
   --------------------------------------------------------------------- */
.qf-container {
  inline-size: 100%;
  max-inline-size: var(--qf-container-max);
  margin-inline: auto;
  padding-inline: var(--qf-gutter);
}

.qf-section { display: block; padding-block: var(--qf-section); position: relative; }
/* 节奏纪律：紧 → 松 → 中 交替 */
.qf-section--tight { padding-block: clamp(32px, 4.4vw, 48px); }
.qf-section--loose { padding-block: clamp(64px, 9vw, 128px); }
.qf-section--surface { background: var(--qf-surface); }
.qf-section--alt { background: var(--qf-surface-alt); }
.qf-section--warm { background: var(--qf-surface-warm); }
.qf-section--canvas {
  background-color: var(--qf-neutral);
  background-image:
    radial-gradient(60% 50% at 88% 4%, var(--qf-glow-sage), transparent 62%),
    radial-gradient(46% 46% at 2% 100%, var(--qf-glow-moss), transparent 60%);
}
.qf-section--dark {
  background: var(--qf-primary);
  color: var(--qf-on-inverse);
  border-block: 1px solid rgba(251, 248, 242, .14);
  border-inline: 0;
}
.qf-section--dark .qf-heading-lg,
.qf-section--dark .qf-heading-md,
.qf-section--dark .qf-heading-sm,
.qf-section--dark .qf-display-lg { color: var(--qf-on-inverse); }
.qf-section--dark .qf-lede,
.qf-section--dark .qf-text { color: var(--qf-on-inverse-muted); }

.qf-grid { display: grid; gap: var(--qf-space-md); }
.qf-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.qf-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.qf-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.qf-split { display: grid; gap: clamp(24px, 3.4vw, 48px); align-items: center; }
@media (min-width: 1024px) {
  .qf-split--hero { grid-template-columns: 1.05fr 1fr; }
  .qf-split--asym { grid-template-columns: 7fr 5fr; }
}
@media (max-width: 1023px) {
  .qf-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qf-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 639px) {
  .qf-grid--2, .qf-grid--3, .qf-grid--4 { grid-template-columns: minmax(0, 1fr); }
}

.qf-section-head { margin-block-end: clamp(28px, 3.4vw, 40px); }
.qf-section-head .qf-lede { margin-block-end: 0; }

/* ---------------------------------------------------------------------
   4. 按钮 / 胶囊 / 徽章
   --------------------------------------------------------------------- */
.qf-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-block-size: 48px; padding: 15px 30px;
  font-family: var(--qf-font-body); font-size: var(--qf-btn-size); font-weight: 700;
  line-height: 1; letter-spacing: .02em; text-decoration: none;
  border-radius: var(--qf-r-md); border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--qf-motion-fast) var(--qf-ease-standard),
              color var(--qf-motion-fast) var(--qf-ease-standard),
              border-color var(--qf-motion-fast) var(--qf-ease-standard),
              transform var(--qf-motion-fast) var(--qf-ease-standard);
  -webkit-appearance: none; appearance: none;
}
.qf-btn--primary { background-color: var(--qf-secondary); color: var(--qf-on-secondary); }
.qf-btn--primary:hover, .qf-btn--primary:focus-visible {
  background-color: var(--qf-tertiary); color: var(--qf-on-secondary); transform: translateY(-1px);
}
.qf-btn--primary:active { background-color: var(--qf-primary); transform: translateY(0); }

.qf-btn--secondary { background-color: transparent; color: var(--qf-primary); border-color: var(--qf-border-strong); }
.qf-btn--secondary:hover, .qf-btn--secondary:focus-visible {
  background-color: var(--qf-surface); color: var(--qf-secondary); border-color: var(--qf-secondary);
}

.qf-btn--onDark { background-color: var(--qf-on-primary); color: var(--qf-primary); }
.qf-btn--onDark:hover, .qf-btn--onDark:focus-visible { background-color: #fff; color: var(--qf-primary); }

.qf-btn--tertiary {
  min-block-size: 44px; padding: 8px 0; border: 0; background: none;
  color: var(--qf-secondary); font-size: var(--qf-nav-link); font-weight: 600;
}
.qf-btn--tertiary:hover, .qf-btn--tertiary:focus-visible { color: var(--qf-tertiary); }
.qf-btn--block { inline-size: 100%; }

/* 胶囊筛选：横向滚动，不用下拉框 */
.qf-chips {
  display: flex; gap: var(--qf-space-xs);
  overflow-x: auto; scroll-snap-type: x proximity;
  padding-block-end: 6px; -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.qf-chips::-webkit-scrollbar { display: none; }
.qf-chip {
  flex: none; scroll-snap-align: start;
  display: inline-flex; align-items: center; justify-content: center;
  min-block-size: 44px; padding: 0 16px;
  background: var(--qf-surface); border: 1px solid var(--qf-border);
  border-radius: var(--qf-r-pill);
  font-size: var(--qf-nav-link); font-weight: 600; line-height: 1.4;
  color: var(--qf-body); text-decoration: none; cursor: pointer;
  transition: background-color var(--qf-motion-fast) var(--qf-ease-standard),
              color var(--qf-motion-fast) var(--qf-ease-standard),
              border-color var(--qf-motion-fast) var(--qf-ease-standard);
}
.qf-chip:hover, .qf-chip:focus-visible { background: var(--qf-surface-warm); color: var(--qf-tertiary); border-color: var(--qf-border-strong); }
.qf-chip.is-active { background: var(--qf-secondary); color: var(--qf-on-secondary); border-color: var(--qf-secondary); }

/* 徽章（纯展示，无交互） */
.qf-badge {
  display: inline-flex; align-items: center; block-size: 24px; padding: 0 10px;
  background: var(--qf-surface-warm); color: var(--qf-tertiary);
  border-radius: var(--qf-r-pill);
  font-size: var(--qf-label-caps); font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
}
.qf-badge--cert {
  block-size: 28px; border-radius: var(--qf-r-xs);
  background: var(--qf-surface-alt); border: 1px solid var(--qf-border);
  color: var(--qf-muted); letter-spacing: .08em;
}

/* ---------------------------------------------------------------------
   5. 卡片
   --------------------------------------------------------------------- */
.qf-card {
  background: var(--qf-surface);
  border: 1px solid var(--qf-border);
  border-radius: var(--qf-r-md);
  padding: 28px;
  transition: transform var(--qf-motion-base) var(--qf-ease-standard),
              box-shadow var(--qf-motion-base) var(--qf-ease-standard),
              border-color var(--qf-motion-fast) var(--qf-ease-standard);
}
.qf-card:hover, .qf-card:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--qf-shadow-hover);
  border-color: var(--qf-secondary);
}
/* 能力块：顶部强调条（刻意不用左彩条，避免模板特征） */
.qf-card--advantage { border-block-start: 3px solid var(--qf-secondary); }
.qf-card--advantage .qf-card__icon { color: var(--qf-secondary); margin-block-end: var(--qf-space-sm); }
.qf-card--advantage .qf-card__icon svg { inline-size: 24px; block-size: 24px; display: block; }
.qf-card__title { font-family: var(--qf-font-display); font-size: var(--qf-heading-sm); font-weight: 600; color: var(--qf-primary); margin: 0 0 8px; }
.qf-card__text { font-size: var(--qf-body-sm); line-height: 1.65; color: var(--qf-body); margin: 0; }
.qf-card--plain { background: none; border: 0; padding: 0; }
.qf-card--plain:hover { transform: none; box-shadow: none; }

/* 客户评价 */
.qf-quote {
  font-family: var(--qf-font-display);
  font-size: 34px; line-height: 1; color: var(--qf-secondary);
  margin: 0 0 12px;
}
.qf-quote-text {
  font-size: var(--qf-body-size); line-height: 1.7; color: var(--qf-body);
  margin: 0 0 var(--qf-space-md);
}
.qf-quote-meta {
  border-block-start: 1px solid var(--qf-border-soft);
  padding-block-start: var(--qf-space-sm);
}
.qf-quote-name { font-size: var(--qf-body-sm); font-weight: 600; color: var(--qf-primary); }
.qf-quote-org { font-size: var(--qf-caption); color: var(--qf-muted); }

/* 评价吸附轨道（手机/平板） */
.qf-rail {
  display: grid; grid-auto-flow: column; grid-auto-columns: 85%;
  gap: var(--qf-space-sm);
  overflow-x: auto; scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch; scrollbar-width: none;
  padding-block-end: 6px;
}
.qf-rail > * { scroll-snap-align: center; }
.qf-rail::-webkit-scrollbar { display: none; }
@media (min-width: 640px) { .qf-rail { grid-auto-columns: 48%; } }
@media (min-width: 1024px) { .qf-rail { grid-auto-flow: row; grid-template-columns: repeat(3, minmax(0, 1fr)); overflow: visible; } }

/* 品类 / 产品卡：图通铺 + 底部遮罩 */
.qf-media-card {
  position: relative; display: block; overflow: hidden;
  border-radius: var(--qf-r-md); border: 1px solid var(--qf-border);
  background: var(--qf-surface-alt); text-decoration: none;
  transition: transform var(--qf-motion-base) var(--qf-ease-standard),
              box-shadow var(--qf-motion-base) var(--qf-ease-standard),
              border-color var(--qf-motion-fast) var(--qf-ease-standard);
}
.qf-media-card:hover, .qf-media-card:focus-visible {
  transform: translateY(-2px); box-shadow: var(--qf-shadow-hover); border-color: var(--qf-secondary);
}
.qf-media-card__img { display: block; inline-size: 100%; block-size: 100%; object-fit: cover; object-position: center; }
.qf-media-card__frame { aspect-ratio: 4 / 5; overflow: hidden; }
.qf-media-card__frame > img { transition: transform var(--qf-motion-slow) var(--qf-ease-settle); }
.qf-media-card:hover .qf-media-card__frame > img { transform: scale(1.03); }
.qf-media-card__overlay {
  position: absolute; inset-inline: 0; inset-block-end: 0;
  padding: 32px;
  background-image: linear-gradient(180deg, rgba(44, 51, 39, 0) 44%, var(--qf-scrim) 100%);
  color: var(--qf-on-inverse);
}
.qf-media-card__title { font-family: var(--qf-font-display); font-size: var(--qf-heading-sm); font-weight: 600; color: var(--qf-on-inverse); margin: 0; }
.qf-media-card__meta { font-size: var(--qf-caption); color: rgba(251, 248, 242, .82); }

/* 产品卡（信息在图上，无价格/无加购/无评分） */
.qf-product { display: block; background: var(--qf-surface); border: 1px solid var(--qf-border); border-radius: var(--qf-r-md); overflow: hidden; text-decoration: none; transition: transform var(--qf-motion-base) var(--qf-ease-standard), box-shadow var(--qf-motion-base) var(--qf-ease-standard), border-color var(--qf-motion-fast) var(--qf-ease-standard); }
.qf-product:hover, .qf-product:focus-visible { transform: translateY(-2px); box-shadow: var(--qf-shadow-hover); border-color: var(--qf-secondary); }
.qf-product__frame { aspect-ratio: 1 / 1; overflow: hidden; background: var(--qf-surface); }
.qf-product__frame > img { inline-size: 100%; block-size: 100%; object-fit: cover; transition: transform var(--qf-motion-slow) var(--qf-ease-settle); }
.qf-product:hover .qf-product__frame > img { transform: scale(1.03); }
.qf-product__frame--contain > img { object-fit: contain; padding: 8%; }
.qf-product__body { padding: 18px; }
.qf-product__name {
  font-family: var(--qf-font-display); font-size: var(--qf-heading-sm); font-weight: 600; color: var(--qf-primary);
  margin: 0 0 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.qf-product__desc {
  font-size: var(--qf-body-sm); color: var(--qf-body); margin: 0 0 12px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* 询盘面板：全站每页最多一个深色重音 */
.qf-inquiry {
  background: var(--qf-primary); color: var(--qf-on-inverse);
  border-radius: var(--qf-r-xl); padding: clamp(28px, 4.4vw, 56px);
  border: 1px solid rgba(251, 248, 242, .14);
  background-image:
    radial-gradient(58% 62% at 92% 6%, rgba(95, 117, 72, .22), transparent 64%),
    radial-gradient(46% 50% at 4% 96%, rgba(95, 117, 72, .14), transparent 62%);
}
.qf-inquiry .qf-heading-lg, .qf-inquiry .qf-heading-md { color: var(--qf-on-inverse); }
.qf-inquiry .qf-lede, .qf-inquiry .qf-text, .qf-inquiry .qf-caption { color: var(--qf-on-inverse-muted); }
.qf-inquiry__actions { display: flex; flex-wrap: wrap; gap: var(--qf-space-sm); margin-block-start: var(--qf-space-md); }
.qf-inquiry__channels { display: flex; flex-wrap: wrap; gap: var(--qf-space-md); margin-block-start: var(--qf-space-md); font-size: var(--qf-body-sm); }
.qf-inquiry__channels a { color: var(--qf-on-inverse-muted); text-decoration: none; border-block-end: 1px solid transparent; transition: color var(--qf-motion-fast) var(--qf-ease-standard), border-color var(--qf-motion-fast) var(--qf-ease-standard); }
.qf-inquiry__channels a:hover, .qf-inquiry__channels a:focus-visible { color: var(--qf-on-inverse); border-block-end-color: var(--qf-on-inverse); }

/* ---------------------------------------------------------------------
   6. 信任条
   --------------------------------------------------------------------- */
.qf-trust { display: grid; gap: 0; border: 1px solid var(--qf-border-soft); border-radius: var(--qf-r-lg); background: var(--qf-surface); overflow: hidden; }
.qf-trust__item {
  display: flex; align-items: center; gap: 12px;
  padding: var(--qf-space-md);
  font-size: var(--qf-body-sm); color: var(--qf-body);
}
.qf-trust__item svg { inline-size: 24px; block-size: 24px; flex: none; color: var(--qf-secondary); }
@media (min-width: 1024px) {
  .qf-trust { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .qf-trust__item + .qf-trust__item { border-inline-start: 1px solid var(--qf-border-soft); }
}
@media (min-width: 640px) and (max-width: 1023px) {
  .qf-trust { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qf-trust__item:nth-child(even) { border-inline-start: 1px solid var(--qf-border-soft); }
  .qf-trust__item:nth-child(n+3) { border-block-start: 1px solid var(--qf-border-soft); }
}
@media (max-width: 639px) {
  .qf-trust { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .qf-trust__item { flex-direction: column; align-items: flex-start; gap: 8px; }
  .qf-trust__item:nth-child(even) { border-inline-start: 1px solid var(--qf-border-soft); }
  .qf-trust__item:nth-child(n+3) { border-block-start: 1px solid var(--qf-border-soft); }
}

/* ---------------------------------------------------------------------
   7. 表单
   --------------------------------------------------------------------- */
.qf-field { margin-block-end: var(--qf-space-sm); }
.qf-field__label { display: block; font-size: var(--qf-nav-link); font-weight: 600; color: var(--qf-primary); margin-block-end: 8px; }
.qf-input, .qf-select, .qf-textarea {
  inline-size: 100%; block-size: 48px; padding: 0 16px;
  background: var(--qf-surface); color: var(--qf-body);
  border: 1px solid var(--qf-border); border-radius: var(--qf-r-sm);
  font-family: var(--qf-font-body); font-size: var(--qf-body-size);
  transition: border-color var(--qf-motion-fast) var(--qf-ease-standard);
  -webkit-appearance: none; appearance: none;
}
.qf-textarea { block-size: 140px; padding: 12px 16px; resize: vertical; max-inline-size: 100%; }
.qf-select {
  padding-inline-end: 40px; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--qf-body) 50%), linear-gradient(135deg, var(--qf-body) 50%, transparent 50%);
  background-position: calc(100% - 20px) calc(50% + 1px), calc(100% - 15px) calc(50% + 1px);
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.qf-input::placeholder, .qf-textarea::placeholder { color: var(--qf-muted); }
.qf-input:focus, .qf-select:focus, .qf-textarea:focus {
  border-color: var(--qf-secondary);
  outline: 2px solid var(--qf-focus-ring); outline-offset: 2px;
}
.qf-helper { font-size: var(--qf-caption); color: var(--qf-muted); margin-block-start: 6px; }
.qf-error { font-size: var(--qf-caption); color: var(--qf-error); margin-block-start: 6px; }
.qf-input[aria-invalid="true"], .qf-textarea[aria-invalid="true"] { border-color: var(--qf-error); }

/* ---------------------------------------------------------------------
   8. 导航 与 页脚
   --------------------------------------------------------------------- */
.qf-nav {
  background: var(--qf-neutral);
  border-block-end: 1px solid transparent;
  transition: border-color var(--qf-motion-base) var(--qf-ease-standard),
              box-shadow var(--qf-motion-base) var(--qf-ease-standard);
}
.qf-nav.is-scrolled { border-block-end-color: var(--qf-border); box-shadow: var(--qf-shadow-nav); }
.qf-nav__link {
  display: inline-flex; align-items: center; block-size: 44px; padding-inline: 12px;
  border-radius: var(--qf-r-sm); color: var(--qf-body);
  font-size: var(--qf-nav-link); font-weight: 600; text-decoration: none;
  transition: background-color var(--qf-motion-fast) var(--qf-ease-standard), color var(--qf-motion-fast) var(--qf-ease-standard);
}
.qf-nav__link:hover, .qf-nav__link:focus-visible { background: var(--qf-surface-warm); color: var(--qf-tertiary); }
.qf-nav__link.is-active { background: var(--qf-surface-warm); color: var(--qf-secondary); }

.qf-footer {
  background: var(--qf-primary); color: var(--qf-on-inverse);
  padding-block: clamp(40px, 5.4vw, 64px) var(--qf-space-md);
  font-size: var(--qf-body-sm);
  border-block-start: 1px solid rgba(251, 248, 242, .14);
}
.qf-footer__grid { display: grid; gap: clamp(24px, 3.4vw, 48px); }
@media (min-width: 1024px) { .qf-footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; } }
@media (min-width: 640px) and (max-width: 1023px) { .qf-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.qf-footer__title { font-family: var(--qf-font-display); font-size: var(--qf-heading-sm); font-weight: 600; color: var(--qf-on-inverse); margin: 0 0 var(--qf-space-sm); }
.qf-footer__link { display: block; color: var(--qf-on-inverse-muted); text-decoration: none; padding-block: 5px; transition: color var(--qf-motion-fast) var(--qf-ease-standard); }
.qf-footer__link:hover, .qf-footer__link:focus-visible { color: var(--qf-on-inverse); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.qf-footer__bottom {
  border-block-start: 1px solid rgba(251, 248, 242, .14);
  margin-block-start: clamp(28px, 3.4vw, 48px); padding-block-start: var(--qf-space-sm);
  display: flex; flex-wrap: wrap; gap: var(--qf-space-sm); align-items: center; justify-content: space-between;
  color: var(--qf-on-inverse-muted); font-size: var(--qf-caption);
}

/* 移动端底部常驻询盘条 */
.qf-sticky-bar { display: none; }
@media (max-width: 767px) {
  .qf-sticky-bar {
    position: fixed; inset-inline: 12px; inset-block-end: 12px; z-index: 900;
    display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
    block-size: 56px; border-radius: var(--qf-r-xl);
    background: var(--qf-primary); border: 1px solid rgba(251, 248, 242, .18);
    box-shadow: var(--qf-shadow-overlay);
    padding-block-end: env(safe-area-inset-bottom, 0);
    transition: opacity var(--qf-motion-base) var(--qf-ease-standard), transform var(--qf-motion-base) var(--qf-ease-standard);
  }
  .qf-sticky-bar.is-hidden { opacity: 0; transform: translateY(16px); pointer-events: none; }
  .qf-sticky-bar a {
    display: flex; align-items: center; justify-content: center; gap: 6px;
    min-block-size: 44px; color: var(--qf-on-inverse); text-decoration: none;
    font-size: var(--qf-body-sm); font-weight: 600;
  }
  .qf-sticky-bar a + a { border-inline-start: 1px solid rgba(251, 248, 242, .14); }
}

/* ---------------------------------------------------------------------
   9. 动效系统（稳健优先）
   规范要求：默认即可见；隐藏态只能由 JS 添加的根类触发；双向无方向条件；
   首帧补偿 + 多事件兜底 + 3s 超时 + CSS 失效保护。
   --------------------------------------------------------------------- */
html.qf-motion [data-reveal] {
  transition: opacity var(--qf-motion-slow) var(--qf-ease-standard),
              transform var(--qf-motion-slow) var(--qf-ease-settle);
  animation: qf-reveal-failsafe 1ms linear 3.2s forwards;
}
html.qf-motion [data-reveal]:not(.is-revealed) {
  opacity: 0;
  transform: translateY(12px);
}
html.qf-motion [data-reveal].is-revealed { opacity: 1; transform: none; }
@keyframes qf-reveal-failsafe { to { opacity: 1; transform: none; } }

/* 同屏错峰 ≤ 80ms */
html.qf-motion [data-reveal][data-reveal-delay="1"] { transition-delay: 40ms; }
html.qf-motion [data-reveal][data-reveal-delay="2"] { transition-delay: 80ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.qf-motion [data-reveal] {
    opacity: 1 !important; transform: none !important;
    transition: none !important; animation: none !important;
  }
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
  .qf-zoom, .qf-shift { transform: none !important; }
}

/* ---------------------------------------------------------------------
   10. RTL（阿拉伯语）
   --------------------------------------------------------------------- */
[dir="rtl"] body, [dir="rtl"] {
  font-family: var(--qf-font-arabic);
}
[dir="rtl"] .qf-display-xl, [dir="rtl"] .qf-display-lg,
[dir="rtl"] .qf-heading-lg, [dir="rtl"] .qf-heading-md, [dir="rtl"] .qf-heading-sm,
[dir="rtl"] .qf-card__title, [dir="rtl"] .qf-media-card__title, [dir="rtl"] .qf-product__name,
[dir="rtl"] .qf-footer__title, [dir="rtl"] .qf-h1, [dir="rtl"] .qf-h2, [dir="rtl"] .qf-h3 {
  font-family: var(--qf-font-arabic);
  letter-spacing: 0 !important;
  font-style: normal;
}
[dir="rtl"] body { font-size: 17.5px; line-height: 1.75; }
[dir="rtl"] .qf-eyebrow, [dir="rtl"] .qf-badge { letter-spacing: 0 !important; }
[dir="rtl"] .qf-select {
  background-position: 20px calc(50% + 1px), 25px calc(50% + 1px);
  padding-inline-end: 16px; padding-inline-start: 40px;
}
[dir="rtl"] .qf-btn__arrow { transform: scaleX(-1); }
[dir="rtl"] .qf-quote-org, [dir="rtl"] .qf-caption { letter-spacing: 0; }

/* ---------------------------------------------------------------------
   11. 模板桥接层：把既有 ftco / Bootstrap 结构映射到设计系统
   （只做「外观归一」，不改结构；站点间差异只允许出现在字标 / Hero 素材 / 品类排序）
   --------------------------------------------------------------------- */
/* 首屏 */
.qf-hero { position: relative; overflow: hidden; background-color: var(--qf-neutral); background-image: radial-gradient(60% 50% at 88% 4%, var(--qf-glow-sage), transparent 62%), radial-gradient(46% 46% at 2% 100%, var(--qf-glow-moss), transparent 60%); }
.qf-hero__media { border-radius: var(--qf-r-xl); overflow: hidden; border: 1px solid var(--qf-border); background: var(--qf-surface-alt); }
.qf-hero__media > img { inline-size: 100%; block-size: 100%; object-fit: cover; object-position: center 42%; }
@media (max-width: 1023px) { .qf-hero__media { aspect-ratio: 3 / 2; } }
@media (min-width: 1024px) { .qf-hero__media { aspect-ratio: 5 / 6; } }
.qf-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-block-start: var(--qf-space-md); }
@media (max-width: 639px) { .qf-actions { flex-direction: column; } .qf-actions > * { inline-size: 100%; } }

/* 优势清单：三角/圆点标记用逻辑属性定位 */
.qf-list { list-style: none; margin: 0; padding: 0; }
.qf-list > li { position: relative; padding-inline-start: 22px; line-height: 1.72; margin-block-end: 9px; color: var(--qf-body); }
.qf-list > li::before {
  content: ""; position: absolute; inset-inline-start: 0; inset-block-start: .62em;
  inline-size: 6px; block-size: 6px; border-radius: var(--qf-r-pill);
  background: var(--qf-secondary);
}

/* 规格表 */
.qf-specs { border-collapse: collapse; inline-size: 100%; font-size: var(--qf-table); }
.qf-specs th, .qf-specs td { padding: 13px 0; text-align: start; border-block-end: 1px solid var(--qf-border-soft); vertical-align: top; }
.qf-specs th { color: var(--qf-muted); font-weight: 500; inline-size: 134px; }
.qf-specs td { color: var(--qf-body); font-weight: 500; }
@media (max-width: 639px) {
  .qf-specs th, .qf-specs td { display: block; inline-size: auto; border: 0; padding-block: 2px; }
  .qf-specs tr { display: block; padding-block: 10px; border-block-end: 1px solid var(--qf-border-soft); }
}

/* 长文 */
.qf-article { max-inline-size: var(--qf-measure-article); }
.qf-article > p { margin: 0 0 1em; line-height: 1.7; }
.qf-article h2 { font-family: var(--qf-font-display); font-size: var(--qf-heading-md); margin-block: 48px 16px; color: var(--qf-primary); }
.qf-article h3 { font-family: var(--qf-font-display); font-size: var(--qf-heading-sm); margin-block: 32px 12px; color: var(--qf-primary); }
.qf-article img { border-radius: var(--qf-r-md); aspect-ratio: 3 / 2; object-fit: cover; inline-size: 100%; block-size: auto; margin-block: var(--qf-space-lg); }
.qf-article blockquote {
  font-family: var(--qf-font-display); font-size: var(--qf-quote); line-height: 1.32;
  margin-block: 48px; border: 0; padding: 0; color: var(--qf-primary);
}
.qf-article table { inline-size: 100%; border-collapse: collapse; font-size: var(--qf-table); margin-block: var(--qf-space-md); }
.qf-article th { background: var(--qf-surface-alt); color: var(--qf-muted); font-size: var(--qf-label-caps); letter-spacing: .16em; text-transform: uppercase; padding: 12px; text-align: start; }
.qf-article td { padding: 12px; border-block-end: 1px solid var(--qf-border-soft); color: var(--qf-body); }

/* 面包屑 */
.qf-breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: var(--qf-caption); color: var(--qf-muted); margin-block-end: 30px; }
.qf-breadcrumb a { color: var(--qf-muted); text-decoration: none; }
.qf-breadcrumb a:hover { color: var(--qf-secondary); }
.qf-breadcrumb__sep { color: var(--qf-secondary); }

/* 语言切换：与设计系统一致的胶囊下拉 */
.qf-lang .quadra-lang-select,
select.quadra-lang-select {
  max-inline-size: 200px; cursor: pointer;
  padding: 6px 30px 6px 13px;
  border: 1px solid var(--qf-border); border-radius: var(--qf-r-pill);
  background-color: transparent; color: var(--qf-body);
  font-family: var(--qf-font-body); font-size: var(--qf-caption); font-weight: 600; letter-spacing: .02em;
  -webkit-appearance: none; appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: calc(100% - 16px) calc(50% + 1px), calc(100% - 11px) calc(50% + 1px);
  background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
  transition: border-color var(--qf-motion-base) var(--qf-ease-standard);
}
select.quadra-lang-select:hover { border-color: var(--qf-secondary); }
select.quadra-lang-select option { color: #111; background: #fff; }
[dir="rtl"] select.quadra-lang-select {
  padding: 6px 13px 6px 30px;
  background-position: 16px calc(50% + 1px), 11px calc(50% + 1px);
}
@media (max-width: 991px) { select.quadra-lang-select { max-inline-size: none; inline-size: 100%; } }

/* 反模板化：清爽化既有模板残留 */
.qf-section { background-clip: padding-box; }
.qf-section .ftco-animate, .qf-section .wow, .qf-section [data-aos] { will-change: auto; }

/* ---------------------------------------------------------------------
   12. 停用旧模板的入场隐藏态
   旧规则 .ftco-animate{opacity:0;visibility:hidden} 只在 waypoints 以
   direction==='down' 成功触发时才还原 —— 带锚点进入 / 中途刷新时会永久
   不可见。现由 qf-motion（默认可见 + 双向触发 + 多重兜底）接管。
   选择器特异性刻意高于 .ftco-animate 而低于 html.qf-motion [data-reveal]...，
   因此带 data-reveal 的元素仍能正常播放新动效。
   --------------------------------------------------------------------- */
body .ftco-animate, body .wow, body [data-aos] { opacity: 1; visibility: visible; transform: none; }
body .ftco-animate.animated { animation: none; }