/* ============================================================
   Softmag Catalog — 极简 · 留白 · 精密
   配色取原站真实色值：浅鼠尾草底 + 深墨石板字 + 品牌绿 + 暖沙
   ============================================================ */

:root {
  --bg: #eef2f0;
  --bg-soft: #e7ece9;
  --surface: #ffffff;
  --ink: #17292f;
  --ink-2: #33474d;
  --muted: #66716d;
  --muted-2: #9daba6;
  --line: #d9deda;
  --line-soft: #e6ebe8;
  --thumb: #f5f8f6;
  --sage: #7fa69b;
  --sage-deep: #4d7a6c;
  --sage-tint: #e3ece8;
  --tan: #a68b6c;
  --radius: 14px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --nav-h: 76px;
  --max: 1340px;
  --pad: 44px;
}

* { box-sizing: border-box; }

/* 移动端点击/长按不再出现蓝色高亮块，改用各控件自己的 :active / hover 反馈 */
* { -webkit-tap-highlight-color: transparent; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Manrope", -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.locked { overflow: hidden; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; -webkit-appearance: none; appearance: none; }
img { display: block; max-width: 100%; -webkit-user-drag: none; }

/* 可点区域禁止长按选中文字（否则 iOS 会弹出蓝色选区） */
a,
button,
.card,
.chip,
.vt,
.btn,
.mnav a,
.mmenu a,
.f-quick,
.drawer-close,
.modal-close {
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

/* 替代蓝色高亮的轻量按压反馈 */
.card:active,
.chip:active,
.vt:active,
.btn:active,
.shop-list a:active,
.modal-cancel:active {
  opacity: .72;
}

/* 触摸设备上，点按后不给残留焦点框；键盘导航仍保留可见焦点 */
a:focus,
button:focus,
[tabindex]:focus {
  outline: none;
}

[hidden] { display: none !important; }

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

:focus-visible {
  outline: 2px solid var(--sage-deep);
  outline-offset: 3px;
}

/* ---------------------------------------------------------- 通用 */

.eyebrow {
  margin: 0 0 20px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--sage-deep);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 50px;
  padding: 0 32px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: .04em;
  transition: transform .35s var(--ease), background .3s, color .3s, box-shadow .35s var(--ease), border-color .3s;
  will-change: transform;
  cursor: pointer;
}

.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -16px rgba(23, 41, 47, .6);
}

.btn-ghost {
  color: var(--ink-2);
  border: 1px solid var(--line);
  background: transparent;
}
.btn-ghost:hover {
  border-color: var(--sage);
  color: var(--sage-deep);
  transform: translateY(-2px);
}

/* ---------------------------------------------------------- 导航 */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 97;
  height: var(--nav-h);
  transition: background .4s, backdrop-filter .4s, border-color .4s;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(238, 242, 240, .86);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--line);
}

.nav-inner {
  max-width: var(--max);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  gap: 38px;
}

.brand {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .22em;
  flex: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}

.nav-links > a,
.nav-drop-btn {
  position: relative;
  font-size: 13px;
  color: var(--ink-2);
  letter-spacing: .04em;
  padding: 6px 0;
  transition: color .25s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.nav-links > a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}

.nav-links > a:hover,
.nav-drop-btn:hover { color: var(--ink); }
.nav-links > a:hover::after { transform: scaleX(1); }

/* 资料中心下拉 */
.nav-drop { position: relative; }

.nav-drop-btn svg { transition: transform .3s var(--ease); }
.nav-drop.open .nav-drop-btn { color: var(--ink); }
.nav-drop.open .nav-drop-btn svg { transform: rotate(180deg); }

.nav-drop-menu {
  position: absolute;
  top: calc(100% + 16px);
  left: 50%;
  min-width: 300px;
  padding: 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 26px 50px -30px rgba(23, 41, 47, .4);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -6px);
  transition: opacity .25s, transform .3s var(--ease), visibility .25s;
}

.nav-drop-menu::before {
  content: "";
  position: absolute;
  top: -16px; left: 0; right: 0;
  height: 16px;
}

.nav-drop.open .nav-drop-menu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nav-drop-menu a {
  display: block;
  padding: 11px 14px;
  border-radius: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-2);
  transition: background .2s, color .2s;
}
.nav-drop-menu a:hover { background: var(--sage-tint); color: var(--sage-deep); }

.nav-lang {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .06em;
  transition: color .25s;
}
.nav-lang:hover { color: var(--ink); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 40px;
  padding: 0 22px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .06em;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -12px rgba(23, 41, 47, .62);
}

.nav-burger { display: none; }

/* ---------------------------------------------------------- 移动端菜单 */

.mmenu {
  position: fixed;
  inset: 0;
  z-index: 96;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform .5s var(--ease), opacity .35s, visibility .5s;
  padding-top: calc(var(--nav-h) + 8px);
}

.mmenu.open {
  transform: none;
  opacity: 1;
  visibility: visible;
}

.mmenu-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px var(--pad) 20px;
}

.mmenu-body > a,
.mmenu-acc {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 0;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.mmenu-acc span { color: var(--muted-2); font-size: 18px; transition: transform .3s; }
.mmenu-acc[aria-expanded="true"] span { transform: rotate(45deg); }

.mmenu-sub {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s var(--ease);
  border-bottom: 1px solid var(--line);
}
.mmenu-sub.open { max-height: 160px; }
.mmenu-sub a {
  display: block;
  padding: 14px 0 14px 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.mmenu-foot {
  padding: 18px var(--pad) calc(26px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--line);
}
.mmenu-foot .btn { width: 100%; }

/* ---------------------------------------------------------- Hero */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-h) + 30px) var(--pad) 140px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1080px 640px at 50% 24%, #ffffff 0%, rgba(255, 255, 255, 0) 62%),
    radial-gradient(900px 560px at 80% 92%, #dae4df 0%, rgba(218, 228, 223, 0) 72%),
    radial-gradient(780px 520px at 8% 12%, #e3eae6 0%, rgba(227, 234, 230, 0) 74%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 46%;
  width: min(820px, 92vw);
  height: min(820px, 92vw);
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(127, 166, 155, .15) 0%, rgba(127, 166, 155, 0) 66%);
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 980px;
}

.hero .eyebrow { margin-bottom: 34px; }

.hero h1 {
  margin: 0;
  font-size: clamp(40px, 5.4vw, 82px);
  font-weight: 300;
  line-height: 1.42;
  letter-spacing: .02em;
}

.hero h1 .sage { color: var(--sage); }

.hero .lede {
  margin: 42px auto 0;
  max-width: 620px;
  font-size: 14.5px;
  line-height: 2.15;
  letter-spacing: .01em;
  color: var(--muted);
}

.hero-actions {
  margin-top: 54px;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 44px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  color: var(--muted-2);
  z-index: 1;
}

.scroll-hint span {
  font-size: 9.5px;
  letter-spacing: .34em;
}

.scroll-hint i {
  width: 1px;
  height: 46px;
  background: linear-gradient(to bottom, var(--sage), rgba(127, 166, 155, 0));
  animation: drop 2.4s var(--ease) infinite;
  transform-origin: top;
}

@keyframes drop {
  0%   { transform: scaleY(0); opacity: 0; }
  35%  { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(1) translateY(18px); opacity: 0; }
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  animation: rise .95s var(--ease) forwards;
}
.reveal.d1 { animation-delay: .12s; }
.reveal.d2 { animation-delay: .26s; }
.reveal.d3 { animation-delay: .4s; }

@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------------------------------------------------------- 筛选 */

.catalog {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* 背景改用不透明纯色：原来用 backdrop-filter 模糊，滚动 / 折叠时每帧都要重采样背景，
   在手机上是最主要的一处掉帧来源；底色与页面同色，肉眼看不出差别但省掉整层模糊 */
.filters {
  position: sticky;
  top: var(--nav-h);
  z-index: 60;
  margin: 0 calc(var(--pad) * -1);
  padding: 16px var(--pad) 14px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  /* 吸顶投影做到伪元素上，用 opacity 过渡（走合成层），不再让 box-shadow 每帧重绘 */
}

.filters::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 34px;
  pointer-events: none;
  /* 多段色标模拟指数衰减：近处稍浓、远处迅速化开。
     原来「起点 .1 一路线性到 0」只有 20px，衰减是等速的，
     视觉上就是一条边界清晰的灰带 —— 生硬感来自这里。 */
  background: linear-gradient(to bottom,
    rgba(23, 41, 47, .052) 0%,
    rgba(23, 41, 47, .046) 10%,
    rgba(23, 41, 47, .037) 22%,
    rgba(23, 41, 47, .027) 36%,
    rgba(23, 41, 47, .018) 52%,
    rgba(23, 41, 47, .010) 70%,
    rgba(23, 41, 47, .004) 86%,
    rgba(23, 41, 47, 0) 100%);
  opacity: 0;
  transition: opacity .34s ease;
  will-change: opacity;
}

.filters.stuck::after { opacity: 1; }

/* 移动端折叠筛选：锚点 + 「快速筛选」窄条（桌面端不显示，样式在移动端媒体查询里） */
.f-anchor { height: 0; }
.f-quick { display: none; }

.filters-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.filter-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-row {
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

.filter-label {
  flex: none;
  width: 62px;
  padding-top: 6px;
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: .04em;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  min-width: 0;
}

.chip {
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 11.5px;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid transparent;
  transition: background .25s, color .25s, border-color .25s;
  white-space: nowrap;
}

.chip:hover { background: var(--sage-tint); color: var(--sage-deep); }

.chip.on { background: var(--ink); color: #fff; }
.chip.on:hover { background: var(--ink); color: #fff; }

.chip .n {
  margin-left: 5px;
  font-size: 10px;
  opacity: .45;
}

/* 搜索 + 视图切换 */
.filters-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
}

.search {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 9px;
  height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .8);
  border: 1px solid var(--line);
  color: var(--muted-2);
  transition: border-color .25s, background .25s;
}
.search:focus-within { border-color: var(--sage); background: #fff; }

.search input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: none;
  outline: none;
  font: inherit;
  font-size: 12.5px;
  color: var(--ink);
}
.search input::placeholder { color: var(--muted-2); }
.search input::-webkit-search-cancel-button { -webkit-appearance: none; }

.view-toggle {
  flex: none;
  display: flex;
  gap: 2px;
  padding: 3px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .8);
  border: 1px solid var(--line);
}

.vt {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 13px;
  border-radius: 999px;
  font-size: 11.5px;
  color: var(--muted);
  transition: background .25s, color .25s;
}
.vt:hover { color: var(--ink); }
.vt.on { background: var(--ink); color: #fff; }

/* ---------------------------------------------------------- 目录头 */

.catalog-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 58px 0 30px;
  border-bottom: 1px solid var(--line);
}

.catalog-head .eyebrow { margin-bottom: 12px; }

.catalog-head h2 {
  margin: 0;
  font-size: 26px;
  font-weight: 500;
  letter-spacing: .02em;
}

.count {
  margin: 0 0 4px;
  font-size: 12.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* ---------------------------------------------------------- 卡片网格 */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
  gap: 22px;
  padding: 30px 0 20px;
}

.card {
  background: var(--surface);
  border: 1px solid rgba(23, 41, 47, .07);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .4s;
  opacity: 0;
  transform: translateY(14px);
  animation: cardIn .7s var(--ease) forwards;
}

@keyframes cardIn { to { opacity: 1; transform: none; } }

.card:hover {
  transform: translateY(-5px);
  border-color: var(--sage);
  box-shadow: 0 24px 46px -28px rgba(23, 41, 47, .3);
}

.card-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--thumb);
  overflow: hidden;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform .8s var(--ease);
  padding: 4%;
  mix-blend-mode: multiply;
}

.card:hover .card-thumb img { transform: scale(1.045); }

.card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(227, 236, 232, .92);
  backdrop-filter: blur(6px);
  font-size: 10.5px;
  color: var(--sage-deep);
  letter-spacing: .02em;
}

.card-off {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(23, 41, 47, .72);
  backdrop-filter: blur(6px);
  font-size: 10px;
  letter-spacing: .04em;
  color: #fff;
}

.card-noimg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #bfcdc8;
}

.card-body { padding: 15px 17px 18px; }

.card-name {
  margin: 0;
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--ink);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 44px;
}

.card-model {
  margin: 8px 0 0;
  font-size: 11.5px;
  color: var(--muted-2);
  letter-spacing: .04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-foot {
  margin-top: 14px;
  padding-top: 13px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.card-price {
  font-size: 14.5px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

.card-price small {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--muted-2);
  margin-right: 2px;
}

.card-sample {
  font-size: 10.5px;
  color: var(--tan);
  white-space: nowrap;
}

.empty {
  padding: 90px 0 70px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

/* ---------------------------------------------------------- 表格视图 */

.table-wrap {
  margin: 26px 0 10px;
  background: var(--surface);
  border: 1px solid rgba(23, 41, 47, .08);
  border-radius: var(--radius);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.ptable {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 13px;
}

.ptable thead th {
  text-align: left;
  padding: 14px 18px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
  background: #fbfcfb;
}

.ptable th.num { text-align: right; }

.ptable tbody tr {
  border-bottom: 1px solid var(--line-soft);
  cursor: pointer;
  transition: background .2s;
}
.ptable tbody tr:last-child { border-bottom: 0; }
.ptable tbody tr:hover { background: #f7faf8; }

.ptable td {
  padding: 13px 18px;
  color: var(--ink-2);
  vertical-align: middle;
}

.ptable td.num { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink); }

.ptable td:nth-child(2),
.ptable td:nth-child(3),
.ptable td:nth-child(5),
.ptable td:nth-child(6) { white-space: nowrap; }

.pt-product {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
}

.pt-thumb {
  position: relative;
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: var(--thumb);
  overflow: hidden;
}
.pt-thumb img { width: 100%; height: 100%; object-fit: contain; padding: 3px; mix-blend-mode: multiply; }
.pt-thumb .card-noimg svg { width: 16px; height: 16px; }

.pt-name {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}
.pt-name b {
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 340px;
}
.pt-name span { font-size: 11px; color: var(--muted-2); letter-spacing: .04em; }

.pill {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11px;
  background: var(--sage-tint);
  color: var(--sage-deep);
  white-space: nowrap;
}

.pill-off { background: #eceeed; color: var(--muted); }

/* ---------------------------------------------------------- 分页 */

.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 26px 0 80px;
}

.pager button {
  height: 38px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--ink-2);
  background: var(--surface);
  transition: border-color .25s, color .25s, transform .3s var(--ease);
}
.pager button:hover:not(:disabled) { border-color: var(--sage); color: var(--sage-deep); transform: translateY(-1px); }
.pager button:disabled { opacity: .38; cursor: default; }

.pager span {
  font-size: 12.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  min-width: 62px;
  text-align: center;
}

/* ---------------------------------------------------------- 优势 */

.features {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.features-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 76px var(--pad);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 54px;
}

.features-inner article { position: relative; }

.f-num {
  display: block;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--sage);
  margin-bottom: 16px;
}

.features-inner h3 {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .04em;
}

.features-inner p {
  margin: 0;
  font-size: 13px;
  line-height: 2;
  color: var(--muted);
}

/* ---------------------------------------------------------- About */

.about { background: var(--bg); }

.about-inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 110px var(--pad);
  text-align: center;
}

.about h2 {
  margin: 0 0 26px;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 400;
  letter-spacing: .01em;
}

.about-text {
  margin: 0 auto;
  max-width: 620px;
  font-size: 14.5px;
  line-height: 2.15;
  color: var(--muted);
}

.stats {
  display: flex;
  justify-content: center;
  gap: 70px;
  margin-top: 62px;
  padding-top: 44px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; gap: 8px; }

.stat b {
  font-size: 30px;
  font-weight: 400;
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.stat span { font-size: 11.5px; color: var(--muted); letter-spacing: .04em; }

/* ---------------------------------------------------------- 页脚 */

.footer {
  background: var(--ink);
  color: #cfd6d4;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 72px var(--pad) 56px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
}

.footer-brand {
  display: block;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .22em;
  color: #fff;
  margin-bottom: 18px;
}

.f-brand p {
  margin: 0;
  font-size: 12.5px;
  line-height: 2;
  color: #93a09c;
  max-width: 320px;
}

.f-col h5 {
  margin: 0 0 18px;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: #7e8d89;
}

.f-col button,
.f-col a {
  display: block;
  font-size: 12.5px;
  color: #cfd6d4;
  padding: 0;
  margin-bottom: 12px;
  text-align: left;
  transition: color .25s;
}
.f-col button:hover,
.f-col a:hover { color: var(--sage); }

.f-addr {
  margin: 0 0 14px;
  font-size: 12.5px;
  line-height: 1.95;
  color: #93a09c;
}

.f-wx { color: var(--sage) !important; }

.footer-bar {
  max-width: var(--max);
  margin: 0 auto;
  padding: 22px var(--pad) 30px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 11.5px;
  color: #6f7d79;
}

/* ---------------------------------------------------------- 详情抽屉 */

.drawer-mask {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(23, 41, 47, .36);
  backdrop-filter: blur(3px);
  opacity: 0;
  transition: opacity .45s var(--ease);
}
.drawer-mask.on { opacity: 1; }

.drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  z-index: 101;
  width: min(600px, 100%);
  background: var(--surface);
  transform: translateX(102%);
  transition: transform .55s var(--ease);
  overflow-y: auto;
  overscroll-behavior: contain;
  box-shadow: -30px 0 70px -40px rgba(23, 41, 47, .45);
}

.drawer.on { transform: none; }

/* 关闭按钮：放在抽屉外层 + fixed。
   放在抽屉内部时，absolute 会跟着内容一起滚动（实测滚 800px 后跑到 -786px），
   sticky 又会在顶部占掉一条高度（就是那条「白带」的来源）。
   外层 fixed 同时解决两者：贴顶、不占位、不随滚动。 */
.drawer-close {
  position: fixed;
  top: 14px;
  right: 14px;
  margin: 0;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  border: 1px solid rgba(23, 41, 47, .07);
  box-shadow: 0 2px 10px -3px rgba(23, 41, 47, .22);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--ink);
  z-index: 102;
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px) scale(.94);
  transition: opacity .28s ease, transform .38s var(--ease), visibility 0s .38s,
              background .25s;
}
.drawer.on + .drawer-close {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity .3s ease .12s, transform .45s var(--ease) .05s, visibility 0s,
              background .25s;
}
.drawer-close:hover { background: var(--sage-tint); }
.drawer-close:hover svg { transform: rotate(90deg); }
.drawer-close svg { transition: transform .32s var(--ease); }

.drawer-body { padding: 0 0 40px; }

/* 详情主图：产品图统一 1:1，铺满抽屉宽度、水平居中，不再留 7% 白边 */
.d-hero {
  width: 100%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.d-hero img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  margin: 0 auto;
  mix-blend-mode: multiply;
}

.d-main { padding: 30px 36px 0; }

.d-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.d-main h2 {
  margin: 0 0 12px;
  font-size: 21px;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: .01em;
}

.d-codes {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 11.5px;
  color: var(--muted-2);
  letter-spacing: .04em;
}
.d-codes span b { font-weight: 500; color: var(--muted); }

.d-pricebox {
  margin-top: 24px;
  padding: 20px 22px;
  border-radius: 12px;
  background: #f7faf8;
  border: 1px solid var(--line-soft);
}

.d-price-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.d-price-row > span {
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: .04em;
}

.d-price-row b {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
}
.d-price-row b small { font-size: 14px; font-weight: 500; margin-right: 2px; }

.d-sample {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--tan);
}

/* 批量报价 */
.d-bulk { margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--line); }

.d-bulk-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
}
.d-bulk-head h4 {
  margin: 0;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--ink-2);
}
.d-bulk-head span { font-size: 11px; color: var(--muted-2); }

.d-bulk-list { display: flex; flex-direction: column; gap: 1px; }

.d-bulk-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 12px;
  font-size: 12.5px;
  background: #fff;
  border: 1px solid var(--line-soft);
}
.d-bulk-row:first-child { border-radius: 8px 8px 0 0; }
.d-bulk-row:last-child { border-radius: 0 0 8px 8px; }
.d-bulk-row span { color: var(--muted); font-variant-numeric: tabular-nums; }
.d-bulk-row b { font-weight: 500; color: var(--ink); font-variant-numeric: tabular-nums; }

/* 表头行 */
.d-bulk-th {
  background: #f2f6f4;
  padding: 8px 12px;
}
.d-bulk-th span,
.d-bulk-th b {
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--muted);
}

/* 隐藏的阶梯单价 */
.d-hidden {
  font-size: 15px;
  line-height: 1;
  letter-spacing: .2em;
  color: var(--muted) !important;
  font-weight: 500;
}

.d-sec { padding: 28px 0; border-bottom: 1px solid var(--line-soft); }
.d-sec:last-of-type { border-bottom: 0; }

.d-sec h4 {
  margin: 0 0 18px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
}

.spec-list { display: flex; flex-direction: column; gap: 14px; }

.spec-row {
  display: flex;
  gap: 18px;
  font-size: 13px;
  line-height: 1.75;
}

.spec-row dt {
  flex: none;
  width: 92px;
  color: var(--muted);
}

.spec-row dd {
  margin: 0;
  color: var(--ink-2);
  flex: 1;
  word-break: break-word;
}

.d-desc {
  margin: 0;
  font-size: 13px;
  line-height: 2;
  color: var(--ink-2);
}

.d-desc + .d-desc { margin-top: 12px; }

.d-pills { display: flex; flex-wrap: wrap; gap: 7px; }

.d-pill {
  padding: 5px 13px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-2);
}

.d-cta {
  position: sticky;
  bottom: 0;
  margin-top: 8px;
  padding: 16px 36px calc(16px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  display: flex;
  gap: 10px;
}

.d-cta .btn { flex: 1; height: 46px; padding: 0 18px; }

/* ---------------------------------------------------------- 弹窗 */

.modal-mask {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: rgba(23, 41, 47, .42);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity .35s var(--ease);
}
.modal-mask.on { opacity: 1; }

.modal {
  position: fixed;
  z-index: 121;
  left: 50%;
  top: 50%;
  width: min(440px, calc(100vw - 40px));
  max-height: calc(100svh - 40px);
  overflow-y: auto;
  padding: 42px 40px 34px;
  background: var(--surface);
  border-radius: 22px;
  text-align: center;
  transform: translate(-50%, -46%) scale(.97);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity .35s var(--ease), transform .45s var(--ease), visibility .35s;
  box-shadow: 0 44px 90px -40px rgba(23, 41, 47, .55);
}

.modal.on {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: auto;
  visibility: visible;
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--muted);
  transition: background .25s, color .25s;
}
.modal-close:hover { background: var(--sage-tint); color: var(--ink); }

.modal-eyebrow {
  margin: 0 0 12px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--muted);
}

.modal-title {
  margin: 0 0 28px;
  font-size: 25px;
  font-weight: 400;
  letter-spacing: .04em;
}

/* 购买渠道 */
.shop-list { display: flex; flex-direction: column; gap: 10px; }

.shop-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 20px;
  border-radius: 12px;
  background: #f7faf8;
  border: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--ink);
  letter-spacing: .04em;
  transition: background .25s, border-color .25s, transform .3s var(--ease), color .25s;
}

.shop-list a svg { color: var(--muted-2); transition: color .25s, transform .3s var(--ease); }

.shop-list a:hover {
  background: var(--sage-tint);
  border-color: var(--sage);
  color: var(--sage-deep);
  transform: translateY(-1px);
}
.shop-list a:hover svg { color: var(--sage-deep); transform: translate(2px, -2px); }

.modal-cancel {
  margin-top: 22px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .06em;
  padding: 6px 12px;
  transition: color .25s;
}
.modal-cancel:hover { color: var(--ink); }

/* 离开确认 */
.modal-exit { padding-bottom: 26px; }
.modal-exit .modal-title { margin-bottom: 14px; }
.modal-exit .modal-note { margin-top: 0; font-size: 12.5px; }

.exit-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 28px;
}
.exit-actions .btn { width: 100%; height: 50px; }
.exit-actions .modal-cancel { margin-top: 10px; }

/* 微信 */
.qr-box {
  width: min(272px, 74vw);
  margin: 0 auto;
  padding: 14px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
}

.qr-box img { width: 100%; height: auto; }

.qr-hint { display: none; }

.modal-note {
  margin: 24px 0 0;
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
}

.modal-hours {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--tan);
}

/* toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 42px;
  z-index: 200;
  transform: translate(-50%, 16px);
  padding: 12px 22px;
  border-radius: 999px;
  background: rgba(23, 41, 47, .94);
  color: #fff;
  font-size: 12.5px;
  letter-spacing: .04em;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s, transform .4s var(--ease);
}
.toast.on { opacity: 1; transform: translate(-50%, 0); }

/* ---------------------------------------------------------- 响应式 */

@media (max-width: 1180px) {
  :root { --pad: 32px; }
  .nav-links { gap: 24px; }
  .footer-inner { grid-template-columns: 1.4fr 1fr 1fr; row-gap: 40px; }
  .f-contact { grid-column: span 3; }
}

@media (max-width: 980px) {
  .nav-links, .nav-lang, .nav-cta { display: none; }

  .brand { margin-right: auto; }

  .nav-burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 0 9px;
    margin-right: -9px;
  }

  .nav-burger span {
    display: block;
    height: 1.4px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform .4s var(--ease), opacity .3s;
  }

  body.menu-open .nav-burger span:first-child { transform: translateY(3.2px) rotate(45deg); }
  body.menu-open .nav-burger span:last-child { transform: translateY(-3.2px) rotate(-45deg); }

  .features-inner { grid-template-columns: 1fr; gap: 34px; padding: 56px var(--pad); }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 34px;
    padding: 56px var(--pad) 40px;
  }
  .f-brand { grid-column: span 2; }
  .f-contact { grid-column: span 2; }
}

@media (max-width: 860px) {
  :root { --pad: 20px; --nav-h: 64px; }

  .hero { padding: calc(var(--nav-h) + 24px) var(--pad) 120px; min-height: 100svh; }
  .hero .eyebrow { margin-bottom: 26px; font-size: 9.5px; letter-spacing: .26em; }
  .hero h1 { font-size: clamp(32px, 9.2vw, 46px); line-height: 1.5; letter-spacing: .01em; }
  .hero .lede { margin-top: 30px; font-size: 13px; line-height: 2; max-width: 340px; }
  .br-desk { display: none; }
  .hero-actions { margin-top: 38px; gap: 10px; }
  .hero-actions .btn { height: 46px; padding: 0 26px; font-size: 13px; }
  .scroll-hint { bottom: 28px; gap: 10px; }
  .scroll-hint i { height: 34px; }

  /* ---------- 筛选区（移动端）：压扁高度 + 滚动收起为「快速筛选」窄条 ---------- */
  /* 不再让 padding 参与过渡：sticky 元素改 padding 会每帧重排整块筛选区 */
  .filters {
    padding: 8px var(--pad) 8px;
    /* padding 也参与过渡：收起时 8px→4px，不参与的话这一下会瞬跳 4px */
    transition: padding .28s cubic-bezier(.32, .72, 0, 1);
  }
  .filters-inner { gap: 0; }

  .filter-rows { gap: 2px; }
  .filter-row { flex-direction: row; align-items: center; gap: 9px; }

  .filter-label {
    flex: none;
    width: 44px;
    padding-top: 0;
    font-size: 10px;
    line-height: 1.2;
    letter-spacing: .02em;
    color: var(--muted-2);
    white-space: nowrap;
  }

  .chips {
    flex: 1;
    width: auto;
    max-width: 100%;
    min-width: 0;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 1px;
    scrollbar-width: none;
    /* 去掉 -webkit-overflow-scrolling：iOS 13+ 已默认惯性滚动，
       保留反而会额外创建合成层，折叠动画时更卡 */
  }
  .chips::-webkit-scrollbar { display: none; }
  .chip { padding: 4px 10px; font-size: 11px; }

  .filters-bar { gap: 8px; padding-top: 8px; margin-top: 7px; }
  .search { height: 34px; padding: 0 12px; }
  .search input { font-size: 12px; }
  .vt span { display: none; }
  .vt { height: 34px; padding: 0 10px; }

  /* 可折叠内容：默认完全展开，收起时由 JS 写入 max-height:0
     - contain 把重排/重绘范围锁在这一块内，不波及下方卡片网格
     - 曲线改成头快尾稳的 (.32,.72,0,1)，时长压到 .26s，收尾不拖泥带水
     - visibility 等高度动画结束后再切，收起后彻底不参与绘制 */
  .f-collapse {
    overflow: hidden;
    contain: layout paint;
    visibility: visible;
    transition: max-height .28s cubic-bezier(.32, .72, 0, 1),
                opacity .28s ease,
                visibility 0s;
  }

  /* 窄条：用「高度 0 ↔ 34px」过渡，而不是 display:none ↔ flex。
     原来 display 一切换就瞬间多出 34px 高，而此时上面内容还没开始收，
     整块会先被撑高再缩回去 —— 那一下「跳」就是这么来的。 */
  .f-quick {
    display: flex;
    align-items: center;
    gap: 7px;
    width: 100%;
    height: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    background: none;
    border: 0;
    font: inherit;
    text-align: left;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: height .28s cubic-bezier(.32, .72, 0, 1), opacity .22s ease;
  }
  .filters.is-slim .f-quick {
    height: 34px;
    opacity: 1;
    pointer-events: auto;
  }
  .f-quick:active { opacity: .62; }
  .fq-funnel { flex: none; color: var(--muted-2); }
  .fq-text {
    font-size: 10.5px;
    letter-spacing: .18em;
    color: var(--muted);
  }
  .fq-sum {
    margin-left: auto;
    font-size: 11px;
    letter-spacing: .02em;
    color: var(--ink-2);
    font-variant-numeric: tabular-nums;
  }
  .fq-ico { flex: none; color: var(--muted); transition: transform .3s ease; }

  /* 收起态：只剩一条窄条 */
  .filters.is-slim { padding: 4px var(--pad); }
  .filters.is-slim:not(.is-open) .f-collapse {
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    transition: max-height .28s cubic-bezier(.32, .72, 0, 1),
                opacity .26s ease,
                visibility 0s .28s;
  }
  .filters.is-open .fq-ico { transform: rotate(180deg); }

  .catalog-head { padding: 34px 0 18px; }
  .catalog-head h2 { font-size: 21px; }
  .count { font-size: 11.5px; }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    padding: 18px 0 8px;
  }

  .card-body { padding: 12px 12px 14px; }
  .card-name { font-size: 12px; line-height: 1.6; min-height: 38px; }
  .card-model { font-size: 10.5px; margin-top: 6px; }
  .card-foot { margin-top: 11px; padding-top: 10px; }
  .card-price { font-size: 13px; }
  .card-sample { font-size: 9.5px; }
  .card-tag { top: 8px; left: 8px; padding: 3px 8px; font-size: 9.5px; }
  .card-off { top: 8px; right: 8px; padding: 3px 8px; font-size: 9px; }

  .pager { padding: 20px 0 60px; gap: 12px; }
  .pager button { height: 36px; padding: 0 16px; font-size: 12px; }

  .about-inner { padding: 72px var(--pad); }
  .about h2 { font-size: 23px; line-height: 1.5; }
  .about-text { font-size: 13.5px; line-height: 2; }
  .stats { gap: 30px; margin-top: 40px; padding-top: 30px; }
  .stat b { font-size: 24px; }

  .footer-inner { grid-template-columns: 1fr; gap: 32px; padding: 48px var(--pad) 34px; }
  .f-brand, .f-contact { grid-column: auto; }
  .footer-bar { padding: 20px var(--pad) 28px; font-size: 11px; }

  .drawer { width: 100%; }
  .d-main { padding: 24px 22px 0; }
  .d-main h2 { font-size: 18px; }
  .d-price-row b { font-size: 23px; }
  .d-hero { aspect-ratio: auto; }
  .d-sec { padding: 24px 0; }
  .spec-row { gap: 12px; font-size: 12.5px; }
  .spec-row dt { width: 78px; }
  .d-cta { padding: 14px 22px calc(14px + env(safe-area-inset-bottom)); }
  .d-cta .btn { height: 44px; font-size: 12.5px; }

  .modal { padding: 36px 24px 28px; border-radius: 20px; }
  .modal-title { font-size: 21px; margin-bottom: 22px; }
  .modal-eyebrow { font-size: 9.5px; }
  .qr-hint { display: block; margin: 14px 0 0; font-size: 11px; color: var(--muted-2); }
  .shop-list a { height: 52px; font-size: 13.5px; }
  .modal-note { margin-top: 20px; font-size: 12.5px; }
}

@media (max-width: 380px) {
  .hero h1 { font-size: 29px; }
  .grid { gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}