/* ============================================================
   厦门市千仁塑料进出口有限公司 企业官网 · 全局样式
   ------------------------------------------------------------
   设计语言：暖纸底 / 石墨墨色 / 树脂琥珀，编辑排版风格
   结构说明（按注释分区查找）：
     01. 设计变量（改色 / 改字体只动这里）
     02. 基础重置与通用排版
     03. 通用组件（容器 / 标题 / 按钮 / 标签 / 图片占位）
     04. 页头 Header
     05. 页脚 Footer
     06. 右侧悬浮坞 Dock
     07. 滚动进场动效
     08. 首页各板块
     09. 内页通用页头
     10. 产品中心（品牌矩阵）
     11. 型号列表 / 型号详情
     12. 新闻中心
     13. 关于我们
     14. 联系我们 / 样品与资料（表单类页面）
     15. 响应式适配
   ============================================================ */

/* ---------- 01. 设计变量 ---------- */
:root {
  /* 颜色 */
  --paper:      #F3F0E9;   /* 暖纸底 */
  --paper-2:    #EAE5DA;   /* 纸底加深（底部说明带 / 斑马纹） */
  --card:       #FBF9F3;   /* 卡片底 */
  --ink:        #16181A;   /* 石墨墨色 */
  --ink-2:      #1C2024;   /* 深色卡 */
  --ink-3:      #33373A;   /* 深色描边 */
  --amber:      #C05A28;   /* 树脂琥珀 */
  --muted:      #5C615D;   /* 灰绿灰（辅助文字，与设计稿一致） */
  --line:       rgba(22, 24, 26, .16);        /* 浅色分割线 */
  --line-2:     #D8D2C4;                      /* 米灰描边（画布 D8D2C4） */
  --line-soft:  rgba(22, 24, 26, .08);
  --line-dark:  rgba(255, 255, 255, .14);     /* 深底分割线 */
  --muted-dark: rgba(255, 255, 255, .55);     /* 深底辅助文字 */

  /* 字体 */
  --f-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --f-sans:  "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-mono:  "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --f-brand: "Barlow", "Noto Sans SC", sans-serif;

  /* 尺寸（与设计稿 1440 版心、左右 80px 留白一致，实际内容宽 1280） */
  --wrap: 1440px;      /* 版心最大宽 */
  --gutter: 80px;      /* 两侧留白 */
  --radius: 2px;       /* 全站方角 */
  --ease: cubic-bezier(.22, .61, .36, 1);   /* 全站动效曲线 */
}

/* ---------- 02. 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--f-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol { list-style: none; }

button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: var(--amber); color: #fff; }

/* ---------- 03. 通用组件 ---------- */

/* 内容容器 */
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

/* 板块留白节奏 */
.section { padding: 96px 0; }
.section-dark { background: var(--ink); color: var(--paper); }

/* 小帽标（mono 琥珀字） */
.kicker {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--amber);
}
.kicker::before { content: "● "; font-size: 8px; vertical-align: 2px; }

/* 板块标题（衬线大标题） */
.title-xl {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 52px;
  line-height: 1.3;
}
.title-lg {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 40px;
  line-height: 1.4;
}
.title-md {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.45;
}

/* 板块头：左标题 + 右侧 mono 注释 */
.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 56px;
}
.sec-head .head-note {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
  padding-bottom: 10px;
}
.sec-head .head-text { display: flex; flex-direction: column; gap: 16px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
  transition: transform .24s var(--ease), background .24s var(--ease),
              color .24s var(--ease), box-shadow .24s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-dark   { background: var(--ink); color: var(--paper); }
.btn-dark:hover  { background: #000; }
.btn-amber  { background: var(--amber); color: #fff; }
.btn-amber:hover { background: #A94C1F; }
.btn-outline { border: 1px solid var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--paper); }
.btn-light  { border: 1px solid var(--line-dark); color: var(--paper); }
.btn-light:hover { background: var(--paper); color: var(--ink); }
.btn-sm { padding: 9px 18px; font-size: 12px; }

/* 小标签 chips */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--ink);
  background: var(--card);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.chip:hover { border-color: var(--amber); color: var(--amber); }

/* 深底下的 chips */
.section-dark .chip, .card-dark .chip {
  background: transparent;
  border-color: var(--line-dark);
  color: var(--paper);
}
.section-dark .chip:hover, .card-dark .chip:hover {
  border-color: var(--amber); color: #fff;
}

/* 等级标签（型号表用） */
.tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius);
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: #fff;
}
.tag-med  { background: #2F6B5A; }              /* 医疗级：青绿 */
.tag-food { background: var(--amber); }         /* 食品级：琥珀 */
.tag-gen  { background: var(--ink-3); }         /* 通用级：石墨 */
.tag-ht   { background: #8A4B2A; }              /* 耐热稳定：赭石 */
.tag-fr   { background: #7A2E2E; }              /* 阻燃：砖红 */
.tag-gf   { background: #4A4F6B; }              /* 玻纤增强：石板蓝 */
.tag-ext  { background: #3C444A; }              /* 挤出吹塑：深灰蓝 */
.tag-auto { background: #1F4E5F; }              /* 汽车安全件：深青 */
.tag-bio  { background: #4B6B3A; }              /* 生物基：橄榄绿 */

/* mono 小注释行 */
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--muted);
}
.meta-row .sep { color: rgba(22, 24, 26, .3); }
.section-dark .meta-row { color: var(--muted-dark); }

/* 图片占位（没图的地方统一用这个） */
.ph {
  position: relative;
  aspect-ratio: var(--ph-ratio, 4 / 3);
  background: var(--paper-2);
  border: 1px dashed rgba(22, 24, 26, .25);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.ph > span {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .15em;
  color: var(--muted);
}
/* 深色区里的占位 */
.section-dark .ph, .card-dark .ph {
  background: rgba(255, 255, 255, .05);
  border-color: rgba(255, 255, 255, .22);
}
.section-dark .ph > span, .card-dark .ph > span { color: var(--muted-dark); }

/* 实景图容器：统一裁切 + 微缩放悬停 */
.frame { overflow: hidden; border-radius: var(--radius); }
.frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .8s var(--ease);
}
.frame:hover img { transform: scale(1.03); }
.frame .img-caption {
  position: absolute; left: 16px; bottom: 14px;
  font-family: var(--f-mono); font-size: 10px;
  color: rgba(255, 255, 255, .85); letter-spacing: .1em;
}

/* ---------- 04. 页头 Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(243, 240, 233, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-scrolled { box-shadow: 0 6px 24px rgba(22, 24, 26, .08); }

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 48px;
  height: 76px;
}

/* 品牌区：logo 图 + 中英文名 */
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-logo { height: 46px; width: auto; }
.brand-name { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name strong {
  font-family: var(--f-brand);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .12em;
}
.brand-name small { font-size: 10px; letter-spacing: .3em; color: var(--muted); }

/* 主导航：绝对居中，与两侧 logo / 电话互不挤压 */
.site-nav {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 38px;
  margin-left: 0;
  white-space: nowrap;
}
.site-nav a {
  position: relative;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink);
  padding: 8px 0;
  transition: color .2s var(--ease);
}
.site-nav a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.site-nav a:hover, .site-nav a.active { color: var(--amber); }
.site-nav a:hover::after, .site-nav a.active::after { transform: scaleX(1); }

/* 头部右侧：电话 + CTA */
.header-side {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 22px;
}
.header-tel {
  font-family: var(--f-brand);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: .02em;
  color: var(--ink);
  text-decoration: none;
  transition: color .3s var(--ease);
}
.header-tel:hover { color: var(--amber); }

/* 中等宽度：收窄导航间距与电话字号，隐藏 CTA 避免与居中导航重叠 */
@media (max-width: 1280px) {
  .site-nav { gap: 30px; }
  .site-nav a { font-size: 15px; }
  .header-tel { font-size: 18px; }
  .header-side .btn-dark { display: none; }
}

/* 移动端汉堡按钮（桌面隐藏） */
.menu-toggle { display: none; width: 40px; height: 40px; position: relative; }
.menu-toggle span {
  position: absolute; left: 8px; right: 8px; height: 2px;
  background: var(--ink);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.menu-toggle span:nth-child(1) { top: 13px; }
.menu-toggle span:nth-child(2) { top: 19px; }
.menu-toggle span:nth-child(3) { top: 25px; }
.menu-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.menu-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 05. 页脚 Footer ---------- */
.site-footer { background: var(--ink); color: var(--paper); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding: 80px 0 64px;
}
.footer-brand { display: flex; flex-direction: column; gap: 20px; }
.footer-brand .brand-name small { color: var(--muted-dark); }
.footer-intro { font-size: 13px; line-height: 2; color: var(--muted-dark); max-width: 300px; }

.footer-col h4 {
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--amber);
  margin-bottom: 22px;
}
.footer-col li { margin-bottom: 12px; }
.footer-col a, .footer-col p {
  font-size: 13px;
  color: var(--muted-dark);
  transition: color .2s var(--ease);
}
.footer-col a:hover { color: var(--paper); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--line-dark);
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--muted-dark);
}
.footer-bottom a:hover { color: var(--paper); }

/* 页脚超大字标 */
.footer-mark {
  font-family: var(--f-brand);
  font-weight: 800;
  font-size: clamp(40px, 7.5vw, 108px);
  letter-spacing: .06em;
  line-height: .85;
  text-align: center;
  color: rgba(255, 255, 255, .05);
  user-select: none;
  padding: 8px 0 0;
  overflow: hidden;
}

/* ---------- 06. 右侧悬浮坞 Dock（SVG 图标 + 分项滑出面板） ---------- */
.dock {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
}
.dock-rail {
  display: flex;
  flex-direction: column;
  width: 56px;
  background: var(--ink);
  border: 1px solid var(--ink-3);
  border-radius: var(--radius);
  overflow: hidden;
}
.dock-rail li { display: contents; }
.dock-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  color: var(--muted-dark);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background .24s var(--ease), color .24s var(--ease);
}
.dock-btn + .dock-btn, .dock-rail li + li .dock-btn { border-top: 1px solid var(--line-dark); }
.dock-btn svg { width: 20px; height: 20px; }
.dock-btn:hover, .dock-btn.is-hot {
  color: #fff;
  background: var(--amber);
}

/* TOP 按钮：滚动 300px 后才出现 */
.dock-btn[data-item="top"] { opacity: 0; pointer-events: none; }
.dock.is-top-visible .dock-btn[data-item="top"] { opacity: 1; pointer-events: auto; }

/* 分项滑出面板：悬停哪个图标，滑出哪个面板 */
.dock-panel {
  position: absolute;
  right: 56px;
  width: 232px;
  background: var(--ink);
  border: 1px solid var(--ink-3);
  border-radius: var(--radius);
  padding: 18px 20px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(12px);
  transition: opacity .24s var(--ease), transform .24s var(--ease), visibility .24s;
}
.dock-panel[data-panel="top"]  { top: 0; }
.dock-panel[data-panel="tel"]  { top: 57px; }
.dock-panel[data-panel="wx"]   { top: 114px; }
.dock-panel[data-panel="mail"] { top: 171px; }
.dock.is-open .dock-panel.is-active { opacity: 1; visibility: visible; transform: none; }

.dock-cap {
  font-family: var(--f-mono);
  font-size: 9px;
  letter-spacing: .14em;
  color: #D97645;
  margin-bottom: 10px;
}
.dock-strong { font-family: var(--f-mono); font-size: 16px; font-weight: 500; color: #fff; }
.dock-panel .dock-note, .dock-note { margin-top: 6px; font-size: 11px; line-height: 1.7; color: var(--muted-dark); }
.dock-qr {
  width: 100%;
  background: #fff;
  padding: 10px;
  border-radius: var(--radius);
}
.dock-wx-id {
  margin-top: 10px;
  font-family: var(--f-mono);
  font-size: 13px;
  color: #fff;
}
.dock-wx-id + .dock-note { margin-top: 4px; }

/* ---------- 07. 滚动进场动效 ---------- */
/* 用法：给元素加 data-reveal；父容器加 data-stagger 可自动错峰 */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  transition-delay: var(--d, 0s);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* 用户偏好减少动效时全部关闭 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- 08. 首页 ---------- */

/* 8.1 Hero · 四屏品牌轮播（还原画布 Carousel Slides：1440×720、左暗渐变、右下品牌牌、右下分页点） */
.hero-carousel {
  position: relative;
  height: 720px;
  background: #171717;
  overflow: hidden;
}
.hc-slide {
  position: absolute; inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity .8s var(--ease), visibility .8s;
}
.hc-slide.is-active { opacity: 1; visibility: visible; z-index: 1; }

/* 底图：激活时缓慢推近（Ken Burns），这就是 banner 的持续动画 */
.hc-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.08);
  transition: transform 7s linear;
}
.hc-slide.is-active .hc-img { transform: scale(1); }

/* 左侧暗渐变遮罩（与画布 Scrim 四段渐变一致） */
.hc-scrim {
  position: absolute; inset: 0;
  background: linear-gradient(90deg,
    rgba(10,10,8,.95) 0%,
    rgba(10,10,8,.80) 38%,
    rgba(10,10,8,.10) 72%,
    rgba(10,10,8,.05) 100%);
}

/* 文案块：距上 96px、距左 80px、宽 664（画布标注） */
.hc-copy {
  position: absolute;
  left: max(80px, calc(50% - 640px)); top: 96px;   /* 与 .wrap 版心左缘对齐 */
  width: min(664px, calc(100% - 160px));
  display: flex; flex-direction: column;
  gap: 26px;
}
.hc-copy > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}
.hc-slide.is-active .hc-copy > :nth-child(1) { transition-delay: .18s; }
.hc-slide.is-active .hc-copy > :nth-child(2) { transition-delay: .28s; }
.hc-slide.is-active .hc-copy > :nth-child(3) { transition-delay: .38s; }
.hc-slide.is-active .hc-copy > :nth-child(4) { transition-delay: .48s; }
.hc-slide.is-active .hc-copy > :nth-child(5) { transition-delay: .58s; }
.hc-slide.is-active .hc-copy > * { opacity: 1; transform: none; }

.hc-eyebrow {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: #C9BFB3;
}
.hc-dot { width: 6px; height: 6px; border-radius: 3px; flex-shrink: 0; }

.hc-title {
  font-family: var(--f-serif);
  font-weight: 900;
  font-size: 56px;
  line-height: 1.34;
  color: #F7F2EA;
}
.hc-sub {
  font-size: 16px;
  line-height: 1.75;
  color: #D9D1C4;
  max-width: 540px;
}
.hc-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hc-btn-primary {
  padding: 16px 28px;
  background: #BF5929;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background .3s var(--ease);
}
.hc-btn-primary:hover { background: #a84c20; }
.hc-btn-ghost {
  padding: 15px 26px;
  background: rgba(20,20,18,.35);
  color: #F7F2EA;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background .3s var(--ease);
}
.hc-btn-ghost:hover { background: rgba(20,20,18,.55); }
.hc-note {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: #B0A89C;
}

/* 右下品牌牌（Logo Plate：4px 竖条 + 品牌名 + mono 注） */
.hc-brand {
  position: absolute;
  right: max(96px, calc(50% - 624px)); bottom: 82px;   /* 版心对齐 + 让出悬浮坞通道 */
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .55s var(--ease) .5s, transform .55s var(--ease) .5s;
}
.hc-slide.is-active .hc-brand { opacity: 1; transform: none; }
.hc-brand-row { display: flex; align-items: center; gap: 12px; }
.hc-bar { width: 4px; height: 30px; flex-shrink: 0; }
.hc-brand-row strong {
  font-family: var(--f-sans);
  font-weight: 700;
  font-size: 28px;
  letter-spacing: .04em;
  color: #fff;
}
.hc-tagline {
  margin-top: 8px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: #C9BFB3;
}

/* 右下分页点：激活点拉长为 18px */
.hc-pager {
  position: absolute;
  right: max(96px, calc(50% - 624px)); bottom: 36px;   /* 版心对齐 + 让出悬浮坞通道 */
  display: flex; align-items: center; gap: 6px;
  z-index: 3;
}
.hc-dot-btn {
  width: 6px; height: 3px;
  border-radius: 1px;
  background: rgba(255,255,255,.4);
  padding: 0;
  transition: width .35s var(--ease), background .35s var(--ease);
}
.hc-dot-btn.is-active { width: 18px; background: #fff; }

/* 8.2 数据条 */
.stats { border-bottom: 1px solid var(--line); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: 44px 32px;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: none; padding-left: 0; }
.stat-num {
  font-family: var(--f-brand);
  font-weight: 800;
  font-size: 44px;
  line-height: 1.1;
}
.stat-num .unit { font-size: 18px; font-weight: 700; margin-left: 4px; color: var(--amber); }
.stat-label {
  margin-top: 8px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
}

/* 8.3 授权品牌带 */
.brands { border-bottom: 1px solid var(--line); }
.brands-band {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  padding: 36px 0;
}
.brand-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-left: 1px solid var(--line);
  font-family: var(--f-brand);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .1em;
  color: var(--ink);
  opacity: .55;
  transition: opacity .3s var(--ease), color .3s var(--ease);
  white-space: nowrap;
}
.brand-item:first-child { border-left: none; }
.brand-item:hover { opacity: 1; color: var(--amber); }

/* 8.4 品类卡片 */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px 28px;
}
.cat-card {
  position: relative;
  padding-top: 22px;
  border-top: 2px solid var(--ink);
  transition: border-color .3s var(--ease);
}
.cat-card::after {
  content: "→";
  position: absolute; right: 0; top: 22px;
  color: var(--muted);
  font-family: var(--f-mono);
  transition: transform .3s var(--ease), color .3s var(--ease);
}
.cat-card:hover { border-top-color: var(--amber); }
.cat-card:hover::after { color: var(--amber); transform: translateX(6px); }
.cat-code {
  font-family: var(--f-brand);
  font-weight: 800;
  font-size: 26px;
  letter-spacing: .06em;
}
.cat-name {
  margin-top: 4px;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 15px;
}
.cat-desc { margin-top: 10px; font-size: 13px; color: var(--muted); line-height: 1.8; }
.cat-note {
  margin-top: 40px;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--muted);
}

/* 8.5 为什么是千仁 */
.why-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 64px;
  align-items: start;
}
.why-list { border-top: 1px solid var(--line); }
.why-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.why-num { font-family: var(--f-mono); font-size: 12px; color: var(--amber); padding-top: 6px; }
.why-item h3 { font-family: var(--f-serif); font-weight: 700; font-size: 19px; margin-bottom: 6px; }
.why-item p { font-size: 13px; color: var(--muted); }
.why-media { position: relative; }
.why-media .frame { aspect-ratio: 4 / 4.4; position: relative; }

/* 8.6 应用领域 Bento（深色） */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(3, minmax(150px, auto));
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}
.bento-media {
  grid-column: span 2;
  grid-row: span 3;
  position: relative;
  background: var(--ink-2);
}
.bento-media img { width: 100%; height: 100%; object-fit: cover; }
.bento-media .bento-media-label {
  position: absolute; left: 22px; bottom: 18px;
  font-family: var(--f-mono); font-size: 11px;
  color: rgba(255, 255, 255, .85); letter-spacing: .1em;
}
.bento-cell {
  background: var(--ink);
  padding: 26px 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  transition: background .3s var(--ease);
}
.bento-cell:hover { background: var(--ink-2); }
.bento-cell .no {
  font-family: var(--f-mono); font-size: 11px;
  color: var(--amber);
  order: 1;
}
.bento-cell h3 {
  font-family: var(--f-serif); font-weight: 700;
  font-size: 18px; color: var(--paper);
  order: 2;
}
.bento-cell p { font-size: 12px; color: var(--muted-dark); order: 3; }

/* 8.7 合作流程 */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.process-step { padding-top: 22px; border-top: 2px solid var(--ink); }
.process-step .no {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--amber);
}
.process-step h3 {
  margin-top: 12px;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 20px;
}
.process-step p { margin-top: 8px; font-size: 13px; color: var(--muted); }
.process-step .step-meta {
  margin-top: 16px;
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .08em;
}

/* 8.8 出口业务（深色全幅） */
.export-head { margin-bottom: 48px; }
.export-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.route-card {
  background: var(--ink-2);
  border: 1px solid var(--ink-3);
  border-radius: var(--radius);
  padding: 36px;
}
.route-card .title-md { margin: 14px 0 28px; }
.route-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-dark);
}
.route-row .label { font-family: var(--f-mono); font-size: 11px; color: var(--muted-dark); }
.route-row .value { font-size: 14px; color: var(--paper); text-align: right; }
.route-note {
  margin-top: 20px;
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--muted-dark);
  letter-spacing: .06em;
}
.export-list { border-top: 1px solid var(--line-dark); }
.export-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-dark);
}
.export-row .label { font-family: var(--f-mono); font-size: 12px; color: var(--muted-dark); padding-top: 3px; }
.export-row .value { font-size: 14px; color: var(--paper); }
.export-cta {
  margin-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.export-cta a {
  font-size: 15px;
  font-weight: 500;
  color: var(--amber);
  transition: transform .3s var(--ease);
}
.export-cta a:hover { transform: translateX(4px); }
.export-cta .note { font-family: var(--f-mono); font-size: 10px; color: var(--muted-dark); }
.port-strip {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--line-dark);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

/* 8.9 新闻三卡 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.news-card { display: flex; flex-direction: column; gap: 14px; }
.news-card .frame, .news-card .ph { aspect-ratio: 4 / 2.7; }
.news-date { font-family: var(--f-mono); font-size: 11px; color: var(--muted); }
.news-card h3 {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.5;
  transition: color .2s var(--ease);
}
.news-card:hover h3 { color: var(--amber); }
.news-card p { font-size: 13px; color: var(--muted); }

/* 8.10 琥珀 CTA 带 */
.cta-band { background: var(--amber); color: #fff; padding: 72px 0; }
.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.cta-band .title-lg { color: #fff; }
.cta-band .kicker { color: rgba(255, 255, 255, .8); }
.cta-band .kicker::before { color: rgba(255, 255, 255, .6); }
.cta-band .btn-dark:hover { background: var(--ink-2); }

/* ---------- 09. 内页通用页头 ---------- */
.page-head {
  padding: 88px 0 64px;
  border-bottom: 1px solid var(--line);
}
.page-head .head-text { display: flex; flex-direction: column; gap: 20px; }
.page-head .title-xl { max-width: 820px; }
.page-head .sub { font-size: 15px; color: var(--muted); max-width: 640px; }
.page-head .meta-row { margin-top: 6px; }

/* 面包屑 */
.crumb {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.crumb a:hover { color: var(--amber); }
.crumb .sep { color: rgba(22, 24, 26, .3); }
.crumb .current { color: var(--ink); }

/* ---------- 10. 产品中心：品牌矩阵 ---------- */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.brand-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.brand-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(22, 24, 26, .1);
  border-color: rgba(22, 24, 26, .3);
}
.brand-card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.brand-card-head h3 {
  font-family: var(--f-brand);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: .04em;
}
.brand-card-head .country { font-family: var(--f-mono); font-size: 11px; color: var(--muted); }
.brand-card .desc { font-size: 13px; color: var(--muted); line-height: 1.85; flex: 1; }
.brand-card .chips { display: flex; flex-wrap: wrap; gap: 8px; }
.brand-card-foot {
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--muted);
}
.brand-card-foot a { color: var(--amber); }

/* 「更多品牌」占位卡：虚线框 */
.brand-card.is-placeholder {
  background: transparent;
  border: 1px dashed rgba(22, 24, 26, .3);
  align-items: flex-start;
  justify-content: center;
}
.brand-card.is-placeholder:hover { transform: none; box-shadow: none; border-color: var(--amber); }
.brand-card.is-placeholder h3 { color: var(--muted); }
.brand-card.is-placeholder .ph {
  width: 100%; aspect-ratio: 4 / 1.2; margin-bottom: 4px;
}

/* ---------- 11. 型号列表 / 型号详情 ---------- */

/* 筛选 chips 行 */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.filter-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.filter-chips .chip { cursor: pointer; }
.filter-chips .chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.filter-search {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--ink);
  padding: 6px 2px;
}
.filter-search input {
  border: none; background: transparent; outline: none;
  font-family: var(--f-mono); font-size: 12px;
  width: 200px; color: var(--ink);
}
.filter-search input::placeholder { color: var(--muted); }

/* 分组表 */
.model-group { margin-bottom: 56px; }
.model-group-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.model-group-head h3 {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 20px;
}
.model-group-head .count { font-family: var(--f-mono); font-size: 11px; color: var(--muted); }

.model-table { border-top: 1px solid var(--line); }
.model-row {
  display: grid;
  grid-template-columns: 1.2fr .7fr 1.3fr 1.3fr auto;
  gap: 20px;
  align-items: center;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease);
}
.model-row:nth-child(even) { background: rgba(234, 229, 218, .55); }   /* 斑马纹 */
.model-row:hover { background: var(--paper-2); }
.model-row.head {
  padding: 10px 20px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--muted);
  background: transparent;
}
.model-row .code { font-family: var(--f-mono); font-weight: 500; font-size: 14px; }
.model-row .hard { font-family: var(--f-mono); font-size: 12px; color: var(--muted); }
.model-row .desc, .model-row .app { font-size: 13px; color: var(--muted); }
.model-row .cell-link { font-family: var(--f-mono); font-size: 11px; color: var(--amber); white-space: nowrap; }
.model-row a.cell-link:hover { text-decoration: underline; }

/* 工程师推荐 CTA */
.rec-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.rec-card h3 { font-family: var(--f-serif); font-weight: 700; font-size: 22px; margin-bottom: 6px; }
.rec-card p { font-size: 13px; color: var(--muted); }

/* 型号详情 */
.detail-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 64px;
  align-items: start;
}
.spec-table { border-top: 1px solid var(--line); margin-top: 36px; }
.spec-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.spec-row .label { color: var(--muted); }
.spec-row .label small {
  display: block;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .08em;
  color: rgba(22, 24, 26, .35);
}
.spec-row .value { font-family: var(--f-mono); font-size: 14px; }
.spec-note {
  margin-top: 16px;
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--muted);
}
.detail-side { display: flex; flex-direction: column; gap: 40px; }
.side-block h4 {
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--muted);
  margin-bottom: 16px;
}
.side-block .chips { display: flex; flex-wrap: wrap; gap: 8px; }
.side-block ul li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
  display: flex;
  justify-content: space-between;
}
.side-block ul li .mono { font-family: var(--f-mono); font-size: 11px; color: var(--muted); }
/* 深色 CTA 卡 */
.card-dark {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  padding: 32px;
}
.card-dark .kicker { margin-bottom: 14px; }
.card-dark .title-md { margin-bottom: 20px; }
.card-dark p { font-size: 13px; color: var(--muted-dark); margin-bottom: 24px; }

/* ---------- 12. 新闻中心 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: stretch;
  margin-bottom: 80px;
}
.feature-grid .frame { position: relative; min-height: 380px; }
.feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
  padding: 8px 0;
}
.feature-copy h2 {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 32px;
  line-height: 1.45;
}
.feature-copy p { font-size: 14px; color: var(--muted); }
.feature-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: 12px;
}
.feature-stats .stat { padding: 24px 20px; border-left: 1px solid var(--line); }
.feature-stats .stat:first-child { padding-left: 0; border-left: none; }
.feature-stats .stat-num { font-size: 30px; }

/* 新闻列表行 */
.news-list { border-top: 1px solid var(--line); }
.news-row {
  display: grid;
  grid-template-columns: 130px 110px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 26px 12px;
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease), padding-left .3s var(--ease);
}
.news-row:hover { background: rgba(234, 229, 218, .55); padding-left: 20px; }
.news-row .date { font-family: var(--f-mono); font-size: 12px; color: var(--muted); }
.news-row .cat {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--amber);
  border: 1px solid rgba(192, 90, 40, .4);
  padding: 4px 10px;
  border-radius: var(--radius);
  text-align: center;
}
.news-row h3 { font-family: var(--f-serif); font-weight: 700; font-size: 17px; }
.news-row .arrow { font-family: var(--f-mono); color: var(--muted); transition: transform .3s var(--ease), color .3s var(--ease); }
.news-row:hover .arrow { transform: translateX(6px); color: var(--amber); }

/* 订阅月报 */
.subscribe {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.subscribe h3 { font-family: var(--f-serif); font-weight: 700; font-size: 22px; margin-bottom: 6px; }
.subscribe p { font-size: 13px; color: var(--muted); }
.subscribe-form { display: flex; gap: 0; }
.subscribe-form input {
  width: 280px;
  padding: 13px 18px;
  border: 1px solid var(--ink);
  border-right: none;
  border-radius: var(--radius) 0 0 var(--radius);
  background: var(--card);
  font-family: var(--f-mono);
  font-size: 12px;
  outline: none;
}
.subscribe-form .btn { border-radius: 0 var(--radius) var(--radius) 0; }
.subscribe-msg {
  width: 100%;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--amber);
  min-height: 16px;
}

/* ---------- 13. 关于我们 ---------- */
.statement {
  padding: 110px 0 90px;
  border-bottom: 1px solid var(--line);
}
.statement .title-xl { max-width: 900px; }
.statement .title-xl em { font-style: normal; color: var(--amber); }
.statement .statement-sub {
  margin-top: 28px;
  max-width: 560px;
  color: var(--muted);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-story p { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.about-story .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.about-media .frame { aspect-ratio: 4 / 3; position: relative; }

/* 时间线 */
.timeline { border-left: 1px solid var(--line); margin-left: 8px; }
.timeline-item {
  position: relative;
  padding: 0 0 40px 40px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -5px; top: 8px;
  width: 9px; height: 9px;
  background: var(--amber);
  border-radius: 50%;
}
.timeline-year { font-family: var(--f-mono); font-size: 12px; color: var(--amber); letter-spacing: .1em; }
.timeline-item h3 {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 19px;
  margin: 6px 0 4px;
}
.timeline-item p { font-size: 13px; color: var(--muted); }

/* ---------- 14. 表单类页面（联系 / 样品与资料） ---------- */
.form-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 64px;
  align-items: start;
}
.form-field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }
.form-field label {
  font-size: 13px;
  font-weight: 500;
}
.form-field label small { font-weight: 400; color: var(--muted); margin-left: 6px; }
.form-field input, .form-field textarea, .form-field select {
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  font-family: var(--f-sans);
  font-size: 14px;
  color: var(--ink);
  outline: none;
  transition: border-color .2s var(--ease);
}
.form-field input:focus, .form-field textarea:focus {
  border-color: var(--amber);
}
.form-field input::placeholder, .form-field textarea::placeholder { color: rgba(22, 24, 26, .35); }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-note {
  margin-top: 16px;
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--muted);
}
.form-msg { margin-top: 14px; font-family: var(--f-mono); font-size: 11px; color: var(--amber); min-height: 16px; }

/* 侧栏联系信息 */
.info-block { margin-bottom: 36px; }
.info-block h4 {
  font-family: var(--f-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--muted);
  margin-bottom: 16px;
}
.info-line {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}
.info-line .label { font-family: var(--f-mono); font-size: 11px; color: var(--muted); padding-top: 3px; }
.info-line .value { text-align: right; }
.info-line .value .mono { font-family: var(--f-mono); font-size: 14px; }
/* 三地仓点小卡 */
.depot-grid { display: grid; gap: 14px; }
.depot-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: border-color .2s var(--ease);
}
.depot-card:hover { border-color: var(--amber); }
.depot-card h5 { font-size: 14px; font-weight: 700; }
.depot-card p { font-size: 12px; color: var(--muted); margin-top: 2px; }
.depot-card .tag-tag {
  font-family: var(--f-mono); font-size: 10px;
  color: var(--amber); letter-spacing: .08em;
  white-space: nowrap;
}

/* 样品与资料页 */
.sample-grid {
  display: grid;
  grid-template-columns: 460px 1fr;
  gap: 56px;
  align-items: start;
}
/* 左侧深色联系人卡 */
.contact-card {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  padding: 40px;
  position: sticky;
  top: 110px;
}
.contact-card .kicker { margin-bottom: 28px; }
.contact-person { display: flex; align-items: center; gap: 18px; }
.avatar {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--amber);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 22px;
  color: #fff;
  flex-shrink: 0;
}
.contact-person h3 { font-family: var(--f-serif); font-weight: 700; font-size: 26px; }
.contact-person p { font-size: 12px; color: var(--muted-dark); margin-top: 2px; }
.contact-card .qr-wrap {
  display: flex;
  gap: 20px;
  align-items: center;
  margin: 30px 0;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line-dark);
}
.contact-card .dock-qr { width: 168px; flex-shrink: 0; }
.qr-note h5 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.qr-note p { font-size: 12px; color: var(--muted-dark); line-height: 1.8; }
.contact-line { padding: 16px 0; border-bottom: 1px solid var(--line-dark); }
.contact-line .label { font-family: var(--f-mono); font-size: 10px; letter-spacing: .14em; color: var(--muted-dark); }
.contact-line .value { margin-top: 6px; font-family: var(--f-mono); font-size: 20px; color: #fff; }
.contact-line .value.small { font-size: 14px; font-family: var(--f-mono); }

/* 右侧可索取清单 */
.request-list { border-top: 1px solid var(--line); }
.request-row {
  display: grid;
  grid-template-columns: 44px 200px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 22px 8px;
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease);
}
.request-row:hover { background: rgba(234, 229, 218, .55); }
.request-row .no { font-family: var(--f-mono); font-size: 12px; color: var(--amber); }
.request-row h3 { font-size: 16px; font-weight: 700; }
.request-row .desc { font-size: 13px; color: var(--muted); }
.request-row .file {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: var(--radius);
  white-space: nowrap;
}
.request-extra { margin-top: 44px; display: flex; flex-direction: column; gap: 20px; }
.request-extra .label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
}
.stock-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.stock-chips .chip { font-family: var(--f-mono); font-size: 12px; }
.hint-line {
  border-left: 3px solid var(--amber);
  padding: 6px 0 6px 20px;
}
.hint-line strong { font-size: 17px; font-family: var(--f-serif); display: block; margin-bottom: 4px; }
.hint-line p { font-size: 13px; color: var(--muted); }

/* 底部三栏说明带 */
.notes-band {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  padding: 56px 0;
}
.notes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.note-item { padding-top: 20px; border-top: 2px solid var(--ink); position: relative; }
.note-item .no { font-family: var(--f-mono); font-size: 11px; color: var(--amber); position: absolute; top: -8px; left: 0; background: var(--paper-2); padding-right: 8px; }
.note-item h3 { font-family: var(--f-serif); font-weight: 700; font-size: 17px; margin-bottom: 8px; }
.note-item p { font-size: 13px; color: var(--muted); }

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-carousel { height: 600px; }
  .cat-grid, .process-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-grid { grid-template-columns: repeat(2, 1fr); }
  .brands-band { grid-template-columns: repeat(4, 1fr); row-gap: 20px; }
  .brand-item:nth-child(5) { border-left: none; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .bento-grid { grid-template-columns: repeat(2, 1fr); grid-template-rows: auto; }
  .bento-media { grid-column: span 2; grid-row: span 1; aspect-ratio: 16 / 8; }
}

@media (max-width: 860px) {
  :root { --gutter: 24px; }
  .hero-carousel { height: 560px; }
  .hc-copy { left: 24px; top: 64px; width: calc(100% - 48px); gap: 20px; }
  .hc-title { font-size: 38px; line-height: 1.3; }
  .hc-sub { font-size: 14px; }
  .hc-brand { right: 72px; bottom: 70px; }
  .hc-brand-row strong { font-size: 20px; }
  .hc-pager { right: 72px; bottom: 22px; }
  .section { padding: 64px 0; }
  .title-xl { font-size: 36px; }
  .title-lg { font-size: 30px; }

  /* 头部：导航折叠 */
  .site-nav {
    position: fixed;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: .3s var(--ease);
    z-index: 99;
  }
  .site-nav.is-open { transform: none; opacity: 1; visibility: visible; }
  .site-nav a { padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
  .site-nav a::after { display: none; }
  .menu-toggle { display: block; margin-left: auto; }
  .header-side { margin-left: 0; }
  .header-tel { display: none; }

  /* 多栏布局塌成单栏 */
  .hero-grid, .why-grid, .export-grid, .detail-grid,
  .form-grid, .about-grid, .feature-grid, .sample-grid { grid-template-columns: 1fr; gap: 44px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 24px 20px; }
  .stat:nth-child(odd) { border-left: none; padding-left: 0; }
  .stat:first-child { padding: 24px 20px 24px 0; }
  .news-grid { grid-template-columns: 1fr; }
  .cat-grid, .process-grid { grid-template-columns: 1fr; gap: 24px; }
  .model-row { grid-template-columns: 1fr 1fr; }
  .model-row.head { display: none; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 8px; }
  .cta-band-inner { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; padding: 56px 0 40px; }
  .contact-card { position: static; }
  .request-row { grid-template-columns: 44px 1fr auto; }
  .request-row .desc { grid-column: 2 / -1; }
  .notes-grid { grid-template-columns: 1fr; gap: 28px; }
  .form-row-2 { grid-template-columns: 1fr; }
  .subscribe { flex-direction: column; align-items: flex-start; }
  .subscribe-form input { width: 200px; }
}

@media (max-width: 600px) {
  .bento-grid { grid-template-columns: 1fr; }
  .bento-media { grid-column: span 1; }
  .brand-grid { grid-template-columns: 1fr; }
  .brands-band { grid-template-columns: repeat(2, 1fr); }
  .brand-item:nth-child(odd) { border-left: none; }
  .news-row { grid-template-columns: 1fr auto; }
  .news-row .date { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 1fr; }
  .dock { right: 12px; }
  .dock-rail { width: 48px; }
  .dock-btn { width: 48px; height: 48px; }
  .dock-panel { display: none; }   /* 移动端折叠：隐藏展开面板 */
  .sample-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   8.11 材料矩阵（还原画布 Materials Section：8 张 306×128 颗粒图卡）
   ============================================================ */
.mat-sec { padding-bottom: 96px; }
.mat-sec .sec-head { margin-bottom: 40px; }
.sec-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 10px;
  white-space: nowrap;
  transition: color .3s var(--ease);
}
.sec-link-arrow { width: 16px; height: 16px; transition: transform .3s var(--ease); }
.sec-link:hover { color: var(--amber); }
.sec-link:hover .sec-link-arrow { transform: translateX(6px); }

.mat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.mat-tile {
  position: relative;
  display: flex;
  align-items: stretch;
  gap: 12px;
  height: 128px;
  background: var(--paper-2);
  border-radius: 2px;
  overflow: hidden;
  text-decoration: none;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.mat-tile:hover { transform: translateY(-4px); box-shadow: 0 10px 24px rgba(22, 24, 26, .08); }
.mat-img {
  position: relative;
  flex: 0 0 84px;
  overflow: hidden;
}
.mat-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s var(--ease);
}
.mat-tile:hover .mat-img img { transform: scale(1.08); }
/* 颗粒图右侧向卡片底色渐隐（画布 Fade Mask） */
.mat-img::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg,
    rgba(234, 229, 218, 0) 0%,
    rgba(234, 229, 218, .45) 42%,
    rgba(234, 229, 218, 1) 85%);
}
.mat-body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 20px 22px 0;
  min-width: 0;
}
.mat-code-row { display: flex; align-items: baseline; gap: 10px; }
.mat-code {
  font-family: var(--f-brand);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: .05em;
  color: var(--ink);
  line-height: 1;
}
.mat-cn { font-size: 11px; color: var(--muted); }
.mat-desc { font-size: 12px; line-height: 1.7; color: var(--muted); }
.mat-note {
  margin-top: 28px;
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--muted);
}

/* ============================================================
   8.12 应用领域 Bento（还原画布 Applications Section：悬停切换大图）
   ============================================================ */
.apps-sec { padding: 96px 0; }
.apps-sec .sec-head { margin-bottom: 40px; }
.apps-sec .sec-head .head-note { color: var(--muted-dark); }
.bento { display: flex; flex-direction: column; gap: 16px; }
.bento-row1 {
  display: grid;
  grid-template-columns: 632px 1fr;
  gap: 16px;
  height: 420px;
}
.bento-row2 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  height: 240px;
}
.bento-main {
  display: flex;
  flex-direction: column;
  background: var(--ink-2);
  border-radius: 2px;
  overflow: hidden;
}
.bento-media {
  position: relative;
  height: 244px;
  overflow: hidden;
  background: #20242a;
}
.bento-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity .5s var(--ease), transform .8s var(--ease);
}
.bento-img.is-active { opacity: 1; transform: scale(1); }
.bento-media-label {
  position: absolute; left: 22px; bottom: 16px;
  font-family: var(--f-mono); font-size: 10px;
  letter-spacing: .14em;
  color: rgba(255, 255, 255, .85);
  background: rgba(16, 19, 21, .55);
  padding: 6px 12px;
  border-radius: 2px;
}
.bento-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 28px;
  flex: 1;
}
.bento-body h3 {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 24px;
  color: var(--paper);
}
.bento-body p { font-size: 13px; line-height: 1.8; color: #9BA29C; }
.bento-tags {
  margin-top: auto;
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--amber);
}
.bento-colr { display: flex; flex-direction: column; gap: 16px; }
.bento-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 28px;
  background: var(--ink-2);
  border-radius: 2px;
  cursor: pointer;
  transition: background .3s var(--ease);
  overflow: hidden;
}
.bento-colr .bento-card { flex: 1; }
.bento-card:hover { background: #20242A; }
.bento-card h3 {
  font-family: var(--f-serif);
  font-weight: 700;
  font-size: 22px;
  color: var(--paper);
}
.bento-card p { font-size: 12px; line-height: 1.8; color: #9BA29C; flex: 1; }
.bento-tags-sm {
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--amber);
}
/* 悬停线：默认 20% 亮度，激活 100%（画布 Hover Line） */
.hover-line {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--amber);
  opacity: .2;
  transform-origin: left;
  transition: opacity .3s var(--ease);
}
.bento-card.is-hot .hover-line,
.bento-card:hover .hover-line { opacity: 1; }

/* ============================================================
   8.13 产品中心 · 筛选条与品牌卡（还原画布 Filter Bar / Brand Grid）
   ============================================================ */
.ph-prod { padding: 64px 0 48px; }

/* 带背景图的页头（型号列表 / 型号详情，画布同款暗色实拍图 + 渐变遮罩） */
.ph-img {
  position: relative;
  padding: 110px 0 76px;
  color: var(--paper);
  background: var(--ink-3) center / cover no-repeat;
  border-bottom: none;
}
.ph-img::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(22, 24, 26, .88) 0%, rgba(22, 24, 26, .62) 45%, rgba(22, 24, 26, .32) 100%);
}
.ph-img .wrap.head-text { position: relative; z-index: 1; }
.ph-img .title-xl { color: #F7F2EB; }
.ph-img .sub { color: #D5CCBD; }
.ph-img .meta-row { color: #D5CCBD; }
.ph-img .meta-row .sep { color: rgba(247, 242, 235, .35); }
.pfilter { padding-bottom: 28px; }
.pfilter-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.fchips { display: flex; gap: 10px; flex-wrap: wrap; }
.fchip {
  padding: 10px 20px;
  font-size: 13px;
  font-family: var(--f-sans);
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 2px;
  cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.fchip:hover { border-color: var(--ink); }
.fchip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
  font-weight: 500;
}
.fsearch {
  display: block;
  width: 280px;
}
.fsearch input {
  width: 100%;
  padding: 11px 18px;
  font-size: 13px;
  font-family: var(--f-sans);
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 2px;
  outline: none;
  transition: border-color .25s var(--ease);
}
.fsearch input::placeholder { color: var(--muted); }
.fsearch input:focus { border-color: var(--ink); }

.brand-matrix { padding-bottom: 0; }
.bgrid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
/* 悬停时绕行一圈的琥珀描边角度（用于 conic-gradient 动画） */
@property --ring {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: true;
}
.bcard {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 216px;
  padding: 26px 26px 22px;
  background: var(--paper-2);   /* 与首页材料矩阵卡片同底 */
  border: 1px solid var(--line-2);
  border-radius: 2px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
/* 1px 琥珀线从左上角起笔，绕一圈铺满整条边框 */
.bcard::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: inherit;
  background: conic-gradient(from -90deg,
      var(--amber) 0deg,
      var(--amber) calc(var(--ring) - 9deg),
      rgba(192, 90, 40, 0) var(--ring),
      rgba(192, 90, 40, 0) 360deg);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s var(--ease);
}
.bcard:hover {
  transform: translateY(-4px);
  border-color: rgba(192, 90, 40, .3);
  box-shadow: 0 14px 32px rgba(22, 24, 26, .08);
}
.bcard:hover::before {
  opacity: 1;
  animation: cardRing 1s var(--ease) forwards;
}
@keyframes cardRing {
  from { --ring: 0deg; }
  to   { --ring: 360deg; }
}
.bcard.is-hidden { display: none; }
.bcard-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.bcard-lockup { display: flex; align-items: center; gap: 12px; min-width: 0; }
.bcard-logo {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 90px;
  height: 54px;
  flex-shrink: 0;
}
.bcard-logo img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; }
.bcard-logo.is-text strong {
  font-family: var(--f-brand);
  font-weight: 700;
  font-size: 20px;
  color: var(--ink);
}
.bcard-cn { font-size: 13px; color: var(--muted); }
.bcard-country {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--muted);
  white-space: nowrap;
}
.bcard-desc { font-size: 13px; line-height: 1.8; color: var(--muted); }
.bcard-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.bchip {
  padding: 6px 12px;
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 11px;
  color: var(--ink);
  border: 1px solid var(--line-2);
  border-radius: 2px;
}
/* 品牌卡上的品类 chip 可点击，直达该品类型号列表 */
a.bchip {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
a.bchip::after {
  content: "→";
  font-size: 10px;
  opacity: .45;
  transition: opacity .2s var(--ease);
}
a.bchip:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
a.bchip:hover::after { opacity: 1; }
.bcard-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: auto;
  padding-top: 6px;
}
.bcard-count {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--muted);
}
.bcard-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  transition: color .3s var(--ease);
}
.bcard-arrow { width: 16px; height: 16px; transition: transform .3s var(--ease); }
.bcard-link:hover { color: var(--amber); }
.bcard-link:hover .bcard-arrow { transform: translateX(6px); }
.bfoot {
  padding: 22px 18px 72px;
  font-size: 12px;
  color: var(--muted);
}

/* ============================================================
   8.14 响应式补充（材料矩阵 / Bento / 品牌卡 / 悬浮坞面板）
   ============================================================ */
@media (max-width: 1080px) {
  .mat-grid { grid-template-columns: repeat(2, 1fr); }
  .bento-row1 { grid-template-columns: 1fr; height: auto; }
  .bento-media { height: 280px; }
  .bento-colr .bento-card { min-height: 170px; }
  .bento-row2 { grid-template-columns: 1fr; height: auto; }
  .bento-row2 .bento-card { min-height: 150px; }
  .bgrid { grid-template-columns: 1fr; }
  .bcard { min-height: 0; }
}
@media (max-width: 860px) {
  .mat-grid { grid-template-columns: 1fr; }
  .mat-tile { height: 112px; }
  .header-tel { font-size: 14px; }
  .dock { right: 12px; }
  .dock-panel { width: 216px; }
}

.ph-prod .title-xl { max-width: none; }