@charset "UTF-8";
/* ==========================================================================
   PTC CERAMIC — 站点样式
   设计取向：暖白瓷底 + 窑火陶土色主调，衬线标题、留白充足、克制的动效。
   目录：1 变量 2 重置 3 排版 4 布局 5 按钮/标签 6 顶栏 7 头部导航
        8 首屏 9 区块标题 10 品类卡 11 产品卡 12 关于 13 特性/承诺/流程
        14 品牌/证书/案例/图库 15 引言 16 CTA 17 页头/面包屑 18 筛选/分页
        19 详情 20 联系/表单 21 页脚 22 灯箱/回顶 23 动效 24 响应式
   ========================================================================== */

/* 1 ============================================================== 变量 */
:root {
  --bg: #faf7f2;
  --bg-2: #f3ede4;
  --surface: #ffffff;
  --surface-2: #fdfbf8;

  --ink: #1b1814;
  --ink-2: #3f3931;
  --muted: #8b8175;
  --muted-2: #a79d90;

  --line: #e7dfd3;
  --line-2: #f1eae0;

  --clay: #a94f2c;
  --clay-d: #8d3d1e;
  --clay-l: #c8704c;
  --clay-wash: #fbf1ec;
  --celadon: #4f7f6f;
  --celadon-wash: #eef5f1;
  --gold: #b8934a;

  --shadow-s: 0 1px 2px rgba(40, 30, 20, .04), 0 4px 14px -8px rgba(40, 30, 20, .16);
  --shadow-m: 0 2px 6px rgba(40, 30, 20, .05), 0 18px 40px -22px rgba(40, 30, 20, .3);
  --shadow-l: 0 34px 80px -46px rgba(40, 30, 20, .5);

  --r-s: 10px;
  --r: 16px;
  --r-l: 24px;
  --r-full: 999px;

  --wrap: 1240px;
  --head-h: 74px;

  --font-d: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", Georgia, "Times New Roman", serif;
  --font-b: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
            "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* 2 ============================================================== 重置 */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--head-h) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-b);
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; }
img { height: auto; }

/* [hidden] 必须真正隐藏：UA 样式表里 [hidden]{display:none} 的优先级极低，
   任何作者样式的 display 都会覆盖它（.lightbox 曾因此变成一层看不见却吃点击的全屏遮罩）。 */
[hidden] { display: none !important; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
ul, ol, dl, dd, figure, blockquote { margin: 0; padding: 0; }
li { list-style: none; }
fieldset { border: 0; margin: 0; padding: 0; }
legend { padding: 0; }
:focus-visible { outline: 2px solid var(--clay); outline-offset: 3px; border-radius: 4px; }

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

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: var(--r-s);
  transition: top .2s var(--ease);
}
.skip:focus { top: 12px; }

/* 3 ============================================================== 排版 */
h1, h2, h3, h4 {
  font-family: var(--font-d);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: .01em;
  color: var(--ink);
  text-wrap: balance;
}
h1 { font-size: clamp(2rem, 1.35rem + 2.8vw, 3.6rem); margin: 0 0 .6em; }
h2 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.5rem); margin: 0 0 .5em; }
h3 { font-size: 1.14rem; margin: 0 0 .4em; }
h4 { font-size: 1rem; margin: 0 0 .8em; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

.muted { color: var(--muted); }
b, strong { font-weight: 600; }

/* 4 ============================================================== 布局 */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 40px);
}

.sec { padding-block: clamp(56px, 7vw, 104px); }
.sec--alt { background: linear-gradient(180deg, var(--bg-2), #f7f2ea); }
.sec--alt::before { content: ""; display: block; height: 0; }
.sec--list { padding-top: clamp(24px, 3vw, 40px); }

.grid { display: grid; gap: clamp(14px, 1.6vw, 22px); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }

/* 5 ============================================================== 按钮/标签 */
.btn {
  --btn-bg: var(--ink);
  --btn-fg: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px;
  border-radius: var(--r-full);
  background: var(--btn-bg); color: var(--btn-fg);
  font-weight: 600; font-size: .94rem; line-height: 1;
  border: 1px solid transparent;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
              background-color .25s var(--ease), color .25s var(--ease), border-color .25s;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; fill: currentColor; flex: none; }
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-m); }
.btn:active { transform: translateY(0); }

.btn--primary { --btn-bg: var(--clay); }
.btn--primary:hover { --btn-bg: var(--clay-d); }
.btn--light { --btn-bg: #fff; --btn-fg: var(--ink); }
.btn--ghost {
  --btn-bg: transparent; --btn-fg: var(--ink);
  border-color: var(--line); box-shadow: none;
}
.btn--ghost:hover { --btn-bg: var(--surface); border-color: var(--ink); box-shadow: var(--shadow-s); }
.btn--lg { padding: 15px 30px; font-size: 1rem; }
.btn--sm { padding: 9px 16px; font-size: .85rem; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 7px;
  font-weight: 600; font-size: .95rem; color: var(--clay);
  border-bottom: 1px solid transparent; padding-bottom: 2px;
  transition: gap .25s var(--ease), border-color .25s;
}
.link-arrow svg { width: 17px; height: 17px; fill: currentColor; }
.link-arrow:hover { gap: 12px; border-color: var(--clay); }

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 15px; border-radius: var(--r-full);
  border: 1px solid var(--line); background: var(--surface);
  font-size: .88rem; font-weight: 500; color: var(--ink-2);
  transition: all .22s var(--ease); white-space: nowrap;
}
.pill:hover { border-color: var(--clay-l); color: var(--clay); transform: translateY(-1px); }
.pill.is-on {
  background: var(--ink); border-color: var(--ink); color: #fff;
}
.pill.is-on i { background: rgba(255, 255, 255, .2); color: #fff; }
.pill i {
  font-style: normal; font-size: .72rem; font-weight: 600;
  padding: 1px 6px; border-radius: var(--r-full);
  background: var(--bg-2); color: var(--muted);
}
.pill--sm { padding: 6px 13px; font-size: .83rem; }
.pill--ghost {
  background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .18);
  color: rgba(255, 255, 255, .78); font-size: .78rem;
}

.tag {
  display: inline-block; padding: 5px 13px; border-radius: var(--r-full);
  background: var(--clay-wash); color: var(--clay); font-size: .84rem; font-weight: 500;
  transition: background-color .2s;
}
.tag:hover { background: #f6e4db; }
.tag--soft { background: var(--celadon-wash); color: var(--celadon); }

.ico { width: 22px; height: 22px; flex: none; }

/* 6 ============================================================== 顶栏 */
.topbar {
  background: var(--ink); color: rgba(255, 255, 255, .7);
  font-size: .82rem; line-height: 1;
}
.topbar__in {
  display: flex; align-items: center; gap: 22px;
  min-height: 40px; padding-block: 10px;
}
.topbar__item { display: inline-flex; align-items: center; gap: 7px; }
.topbar__item svg { width: 14px; height: 14px; fill: currentColor; opacity: .75; flex: none; }
.topbar__item a { transition: color .2s; }
.topbar__item a:hover { color: #fff; }
.topbar__right { margin-left: auto; color: rgba(255, 255, 255, .5); }

/* 7 ============================================================== 头部导航 */
.site-head {
  position: sticky; top: 0; z-index: 90;
  background: rgba(250, 247, 242, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, background-color .3s;
}
.site-head.is-stuck {
  border-color: var(--line);
  box-shadow: 0 8px 26px -22px rgba(40, 30, 20, .5);
  background: rgba(250, 247, 242, .94);
}
.head__in {
  display: flex; align-items: center; gap: 24px;
  min-height: var(--head-h);
}

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
/* 90x75 的锁标；环内小字在 52px 高度下只作装饰纹理，与老站原尺寸观感一致 */
.brand__mark { width: auto; height: 52px; color: #231815; flex: none; transition: transform .4s var(--ease); }
.brand:hover .brand__mark { transform: rotate(-7deg) scale(1.05); }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong {
  font-family: var(--font-d); font-size: 1.1rem; font-weight: 600; letter-spacing: .07em;
  color: var(--ink);
}
.brand__text small {
  font-size: .7rem; color: var(--muted); letter-spacing: .04em; margin-top: 2px;
}

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav__link {
  position: relative; padding: 9px 15px; border-radius: var(--r-full);
  font-size: .95rem; font-weight: 500; color: var(--ink-2);
  transition: color .22s, background-color .22s;
}
.nav__link::after {
  content: ""; position: absolute; left: 50%; bottom: 3px;
  width: 0; height: 2px; border-radius: 2px; background: var(--clay);
  transform: translateX(-50%); transition: width .28s var(--ease);
}
.nav__link:hover { color: var(--clay); }
.nav__link:hover::after { width: 18px; }
.nav__link.is-active { color: var(--ink); font-weight: 600; }
.nav__link.is-active::after { width: 18px; }
.nav__foot { display: none; }
/* 「旧版网站」入口：做成小胶囊标签，与主菜单区分 */
.nav__legacy {
  margin-left: 8px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: .84rem;
  line-height: 1;
  white-space: nowrap;
  transition: color .25s ease, border-color .25s ease, background .25s ease;
}
.nav__legacy::after { display: none; }
.nav__legacy:hover {
  color: var(--clay);
  border-color: var(--clay-l);
  background: var(--clay-wash);
}

.head__actions { display: flex; align-items: center; gap: 10px; flex: none; }
.lang {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 13px; border-radius: var(--r-full); border: 1px solid var(--line);
  font-size: .84rem; font-weight: 600; color: var(--ink-2);
  transition: all .22s var(--ease);
}
.lang svg { width: 15px; height: 15px; fill: currentColor; opacity: .8; }
.lang:hover { border-color: var(--ink); background: var(--surface); }

.burger {
  display: none; width: 42px; height: 42px; border-radius: var(--r-s);
  border: 1px solid var(--line); background: var(--surface);
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.burger span {
  display: block; width: 17px; height: 1.8px; border-radius: 2px; background: var(--ink);
  transition: transform .3s var(--ease), opacity .2s;
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.8px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.8px) rotate(-45deg); }

.nav__scrim {
  position: fixed; inset: 0; z-index: 88; background: rgba(27, 24, 20, .35);
  backdrop-filter: blur(2px); opacity: 0; pointer-events: none; transition: opacity .3s;
}
.nav__scrim.is-on { opacity: 1; pointer-events: auto; }

/* 8 ============================================================== 首屏 */
.hero { position: relative; overflow: hidden; padding-block: clamp(44px, 6vw, 84px) clamp(52px, 7vw, 96px); }
.hero__bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(58% 62% at 84% 26%, rgba(200, 112, 76, .16), transparent 68%),
    radial-gradient(46% 54% at 12% 84%, rgba(79, 127, 111, .12), transparent 70%),
    linear-gradient(180deg, #fdfbf8 0%, var(--bg) 46%, var(--bg-2) 100%);
}
.hero__bg::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(120, 100, 80, .07) 1px, transparent 0);
  background-size: 26px 26px;
  mask-image: radial-gradient(70% 70% at 50% 40%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(70% 70% at 50% 40%, #000 20%, transparent 80%);
}
.hero__in {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: clamp(28px, 4vw, 64px); align-items: center;
}

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: .8rem; font-weight: 600; letter-spacing: .1em; color: var(--clay);
  text-transform: uppercase;
  padding: 7px 15px 7px 12px; border-radius: var(--r-full);
  background: rgba(169, 79, 44, .07); border: 1px solid rgba(169, 79, 44, .16);
  margin-bottom: 22px;
}
.hero__eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--clay);
  box-shadow: 0 0 0 4px rgba(169, 79, 44, .14);
}
.hero__title { margin-bottom: 20px; letter-spacing: .005em; }
.hero__title em {
  font-style: normal; color: var(--clay);
  position: relative; white-space: nowrap;
}
.hero__title em::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .06em; height: .3em;
  background: linear-gradient(90deg, rgba(200, 112, 76, .26), rgba(200, 112, 76, .06));
  border-radius: 3px; z-index: -1;
}
.hero__desc {
  font-size: clamp(1rem, .96rem + .22vw, 1.1rem); color: var(--ink-2);
  max-width: 34em; margin-bottom: 30px;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }

.hero__stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px; padding-top: 26px; border-top: 1px solid var(--line);
}
.hero__stats dt {
  font-family: var(--font-d); font-size: clamp(1.5rem, 1.2rem + .9vw, 2rem);
  font-weight: 600; color: var(--ink); line-height: 1.1;
}
.hero__stats dt span { color: var(--clay); }
.hero__stats dd { font-size: .82rem; color: var(--muted); margin-top: 4px; }

.hero__stage { position: relative; aspect-ratio: 1 / .96; min-height: 340px; }
.hero__disc {
  position: absolute; inset: 6% 4% 8% 6%; border-radius: 50%;
  background: radial-gradient(circle at 34% 28%, #fff 0%, #f7ede2 42%, #efe0cd 78%, #e7d3ba 100%);
  box-shadow: inset 0 -30px 60px -30px rgba(120, 80, 40, .28), var(--shadow-l);
}
.hero__ring {
  position: absolute; inset: -2% 0 0 -2%; border-radius: 50%;
  border: 1px dashed rgba(169, 79, 44, .28);
  animation: spin 60s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hero__p {
  position: absolute; margin: 0;
  filter: drop-shadow(0 26px 30px rgba(80, 55, 30, .22));
  animation: float 7s ease-in-out infinite;
}
.hero__p img { width: 100%; height: 100%; object-fit: contain; }
.hero__p--1 { width: 56%; left: 6%; bottom: 6%; z-index: 3; }
.hero__p--2 { width: 34%; right: 2%; top: 6%; z-index: 2; animation-delay: -2.4s; }
.hero__p--3 { width: 28%; right: 12%; bottom: 2%; z-index: 1; animation-delay: -4.6s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero__badge {
  position: absolute; left: 0; top: 12%; z-index: 4;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 9px 15px; border-radius: var(--r-full);
  background: rgba(255, 255, 255, .9); backdrop-filter: blur(8px);
  border: 1px solid var(--line); box-shadow: var(--shadow-s);
  font-size: .78rem; font-weight: 600; color: var(--celadon);
}
.hero__badge svg { width: 16px; height: 16px; flex: none; }

/* 9 ============================================================== 区块标题 */
.sechead { max-width: 46em; margin-bottom: clamp(26px, 3.2vw, 44px); }
.sechead--center { margin-inline: auto; text-align: center; }
.sechead__kicker {
  display: inline-block; font-size: .77rem; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase; color: var(--clay);
  margin-bottom: 12px;
}
.sechead__title { margin-bottom: 12px; }
.sechead__desc { color: var(--muted); margin: 0; font-size: 1rem; }
.sechead-row {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
}
.sechead-row .sechead { margin-bottom: clamp(26px, 3.2vw, 44px); }

/* 10 ============================================================= 品类卡 */
.cats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(14px, 1.6vw, 22px); }
.ccard {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--r-l); overflow: hidden;
  transition: transform .38s var(--ease), box-shadow .38s var(--ease), border-color .3s;
}
.ccard:hover { transform: translateY(-6px); box-shadow: var(--shadow-m); border-color: var(--line); }
.ccard__stage {
  position: relative; display: grid; place-items: center; aspect-ratio: 1 / .92;
  background: radial-gradient(112% 100% at 50% 4%, #fff, #f5efe6 58%, #ece2d3);
  overflow: hidden;
}
.ccard__stage img {
  width: 78%; height: 78%; object-fit: contain;
  transition: transform .55s var(--ease);
  filter: drop-shadow(0 16px 18px rgba(80, 55, 30, .16));
}
.ccard:hover .ccard__stage img { transform: scale(1.07) translateY(-4px); }
.ccard__body {
  display: flex; flex-direction: column; gap: 3px;
  padding: 18px 20px 20px; border-top: 1px solid var(--line-2);
}
.ccard__kicker { font-size: .7rem; font-weight: 700; letter-spacing: .12em; color: var(--muted-2); text-transform: uppercase; }
.ccard__title { font-family: var(--font-d); font-size: 1.22rem; font-weight: 600; }
.ccard__meta {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 6px;
  font-size: .82rem; color: var(--muted);
}
.ccard__meta svg { width: 15px; height: 15px; fill: var(--clay); transition: transform .3s var(--ease); }
.ccard:hover .ccard__meta svg { transform: translateX(4px); }

/* 11 ============================================================= 产品卡 */
.pcard {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--r); overflow: hidden;
  transition: transform .36s var(--ease), box-shadow .36s var(--ease), border-color .3s;
}
.pcard:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); border-color: var(--line); }

.pcard__stage {
  position: relative; display: grid; place-items: center; aspect-ratio: 1;
  background: radial-gradient(120% 100% at 50% 0%, #fff 0%, #f7f2e9 52%, #efe6d8 100%);
  overflow: hidden;
}
.pcard__stage img {
  position: relative; z-index: 1;
  width: 82%; height: 82%; object-fit: contain;
  transition: transform .5s var(--ease);
  filter: drop-shadow(0 12px 14px rgba(80, 55, 30, .14));
}
.pcard:hover .pcard__stage img { transform: translateY(-5px) scale(1.06); }
.pcard__glow {
  position: absolute; inset: auto 18% 6% 18%; height: 14%;
  border-radius: 50%; filter: blur(7px);
  background: radial-gradient(50% 50% at 50% 50%, rgba(120, 80, 40, .2), transparent 72%);
  opacity: .75; transition: opacity .4s, transform .4s var(--ease);
}
.pcard:hover .pcard__glow { opacity: 1; transform: scaleX(1.08); }
.pcard__stage::before {   /* 悬停时一层暖光 */
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(70% 60% at 50% 106%, rgba(200, 112, 76, .16), transparent 70%);
  opacity: 0; transition: opacity .4s;
}
.pcard:hover .pcard__stage::before { opacity: 1; }

/* 卡片文案三层：标题（最大、最深）→ 介绍（次级）→ 编号（最小、最淡、贴底） */
.pcard__body {
  display: flex; flex-direction: column; gap: 4px; flex: 1;
  padding: 15px 17px 14px; border-top: 1px solid var(--line-2);
}
.pcard__title {
  font-family: var(--font-d); font-size: 1.05rem; font-weight: 600;
  line-height: 1.38; color: var(--ink); letter-spacing: .01em;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;   /* 英文名最长 28 字符，两行封顶不撑破卡片 */
}
.pcard__desc {
  font-size: .82rem; color: var(--ink-2); line-height: 1.5;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.pcard__foot {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  margin-top: auto; padding-top: 10px; border-top: 1px dashed var(--line-2);
}
.pcard__code {
  font-size: .73rem; color: var(--muted-2); letter-spacing: .05em;
  font-variant-numeric: tabular-nums; word-break: break-all;
}
.pcard__arrow svg { width: 16px; height: 16px; fill: var(--clay); opacity: 0; transform: translateX(-5px); transition: all .3s var(--ease); }
.pcard:hover .pcard__arrow svg { opacity: 1; transform: translateX(0); }

/* 12 ============================================================= 关于 */
.about {
  display: grid; grid-template-columns: 1.02fr 1fr;
  gap: clamp(30px, 4.4vw, 72px); align-items: center;
}
.about--flip .about__media { order: 2; }
.about--flip .about__copy { order: 1; }

.about__media { position: relative; }
.about__collage {
  display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: repeat(2, 1fr);
  gap: 12px; aspect-ratio: 1 / .92;
}
.about__collage--tall { aspect-ratio: 1 / 1; }
.about__shot {
  position: relative; margin: 0; overflow: hidden;
  border-radius: var(--r); background: var(--bg-2);
  box-shadow: var(--shadow-s);
}
.about__shot img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.about__shot:hover img { transform: scale(1.05); }
.about__shot--1 { border-top-left-radius: var(--r-l); }
.about__shot--3 { border-bottom-right-radius: var(--r-l); }
.about__shot--3, .about__shot--4 { grid-row: span 1; }

/* 产品砖墙：抠图产品居中摆在暖白瓷底上，配一道落地投影，像样品架 */
.about__collage--ware .about__shot {
  background: linear-gradient(155deg, #fffdfa 0%, #f6f0e7 100%);
}
.about__collage--ware .about__shot img {
  object-fit: contain; box-sizing: border-box; padding: 9%;
}
.about__collage--ware .about__shot::after {
  content: ""; position: absolute; left: 20%; right: 20%; bottom: 8%; height: 7%;
  border-radius: 50%; pointer-events: none;
  background: radial-gradient(50% 50% at 50% 50%, rgba(92, 70, 48, .17), transparent 72%);
}
.about__collage--ware .about__shot:hover img { transform: scale(1.05); }

.about__seal {
  position: absolute; right: -8px; bottom: -14px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  width: 106px; height: 106px; border-radius: 50%;
  background: var(--clay); color: #fff; text-align: center;
  box-shadow: 0 18px 40px -18px rgba(169, 79, 44, .7);
  border: 3px solid var(--bg);
}
.about__seal strong { font-family: var(--font-d); font-size: 1.7rem; line-height: 1; }
.about__seal small { font-size: .66rem; opacity: .82; margin-top: 4px; letter-spacing: .04em; }

.about__lead { font-size: 1.03rem; color: var(--ink-2); }
.about__note { color: var(--muted); font-size: .93rem; }
.about__cta { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; margin-top: 28px; }

/* 13 ================================================== 特性/承诺/流程 */
.features { gap: clamp(14px, 1.6vw, 22px); }
.fcard {
  background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--r-l); padding: 28px 24px 26px;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .3s;
}
.fcard:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); border-color: var(--line); }
.fcard__ico {
  display: grid; place-items: center; width: 46px; height: 46px; margin-bottom: 18px;
  border-radius: 13px; background: var(--clay-wash); color: var(--clay);
  transition: background-color .3s, color .3s;
}
.fcard:hover .fcard__ico { background: var(--clay); color: #fff; }
.fcard h3 { font-size: 1.1rem; }
.fcard p { color: var(--muted); font-size: .92rem; margin: 0; }

.promises {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px; background: var(--line-2); border: 1px solid var(--line-2);
  border-radius: var(--r-l); overflow: hidden;
}
.promises--center { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.promise {
  display: flex; gap: 16px; padding: 26px 24px; background: var(--surface);
  transition: background-color .3s;
}
.promise:hover { background: var(--surface-2); }
.promise__ico {
  display: grid; place-items: center; width: 42px; height: 42px; flex: none;
  border-radius: 12px; background: var(--celadon-wash); color: var(--celadon);
}
.promise h3 { font-size: 1rem; margin-bottom: 6px; }
.promise p { font-size: .88rem; color: var(--muted); margin: 0; }

.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(14px, 1.6vw, 22px); }
.step {
  position: relative; padding: 26px 22px 24px;
  background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--r-l);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.step:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); }
.step__no {
  display: block; font-family: var(--font-d); font-size: 1.9rem; font-weight: 600;
  color: var(--clay); opacity: .28; line-height: 1; margin-bottom: 14px;
}
.step h3 { font-size: 1.02rem; }
.step p { font-size: .88rem; color: var(--muted); margin: 0; }

/* 14 ============================================ 品牌/证书/案例/图库 */
.brands {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 14px; margin-bottom: clamp(30px, 3.6vw, 52px);
}
.brands__item {
  font-family: var(--font-d); font-size: 1.24rem; letter-spacing: .04em;
  padding: 14px 34px; border-radius: var(--r);
  background: var(--surface); border: 1px solid var(--line);
  color: var(--ink-2); box-shadow: var(--shadow-s);
  transition: transform .3s var(--ease), color .3s, border-color .3s;
}
.brands--lg .brands__item { font-size: 1.5rem; padding: 20px 46px; }
.brands__item:hover { transform: translateY(-3px); color: var(--clay); border-color: var(--clay-l); }
.brands__item--soft {
  font-family: var(--font-b); font-size: .86rem; letter-spacing: 0;
  padding: 12px 22px; color: var(--muted); box-shadow: none;
}
.brands__note { text-align: center; font-size: .84rem; color: var(--muted-2); max-width: 62ch; margin-inline: auto; }

.certs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(16px, 2vw, 28px); }
.certs--wide { max-width: 880px; margin-inline: auto; }
.certcard {
  margin: 0; background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--r-l); overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.certcard:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); }
.certcard__stage {
  position: relative; display: block; background: #f5f2ec;
  padding: 22px; cursor: zoom-in;
}
.certcard__stage img { width: 100%; height: auto; border-radius: var(--r-s); box-shadow: var(--shadow-s); }
.certcard__zoom {
  position: absolute; right: 34px; bottom: 34px;
  padding: 7px 14px; border-radius: var(--r-full);
  background: rgba(27, 24, 20, .78); color: #fff; font-size: .78rem; font-weight: 600;
  opacity: 0; transform: translateY(6px); transition: all .3s var(--ease);
  backdrop-filter: blur(6px);
}
.certcard:hover .certcard__zoom { opacity: 1; transform: translateY(0); }
.certcard figcaption { padding: 18px 22px 20px; border-top: 1px solid var(--line-2); }
.certcard figcaption strong { display: block; font-family: var(--font-d); font-size: 1.04rem; }
.certcard figcaption small { color: var(--muted); font-size: .84rem; }

.famgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(16px, 2vw, 26px); }
.famcard {
  margin: 0; background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--r-l); overflow: hidden; cursor: zoom-in;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.famcard:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); }
.famcard img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .6s var(--ease); }
.famcard:hover img { transform: scale(1.04); }
.famcard figcaption { padding: 15px 20px 17px; font-size: .9rem; color: var(--ink-2); border-top: 1px solid var(--line-2); }

.gallery { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: clamp(10px, 1.3vw, 18px); }
.gallery__item {
  position: relative; margin: 0; overflow: hidden; border-radius: var(--r);
  background: var(--bg-2); aspect-ratio: 4 / 3; cursor: zoom-in;
  grid-column: span 2; box-shadow: var(--shadow-s);
}
.gallery__item--wide { grid-column: span 3; }
.gallery__item img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.gallery__item:hover img { transform: scale(1.06); }
.gallery__item::after {
  content: ""; position: absolute; inset: 0;
  box-shadow: inset 0 0 0 1px rgba(40, 30, 20, .06);
  border-radius: inherit; pointer-events: none;
}

/* 产品砖墙版图库：正方形磁贴 + 居中抠图，可点开灯箱看大图 */
.gallery--ware { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.gallery--ware .gallery__item {
  grid-column: span 1; aspect-ratio: 1 / 1;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(155deg, #fffdfa 0%, #f6f0e7 100%);
}
.gallery--ware .gallery__item img {
  width: 100%; height: 100%; object-fit: contain;
  box-sizing: border-box; padding: 8%;
}
.gallery--ware .gallery__item::before {
  content: ""; position: absolute; left: 22%; right: 22%; bottom: 9%; height: 6%;
  border-radius: 50%; pointer-events: none;
  background: radial-gradient(50% 50% at 50% 50%, rgba(92, 70, 48, .16), transparent 72%);
}

/* 15 ============================================================= 引言 */
.quote {
  position: relative; margin: 0; text-align: center;
  padding: clamp(38px, 5vw, 66px) clamp(20px, 5vw, 70px);
  background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--r-l); box-shadow: var(--shadow-s);
}
.quote__mark {
  display: block; font-family: var(--font-d); font-size: 4.4rem; line-height: .5;
  color: var(--clay); opacity: .22; margin-bottom: 6px;
}
.quote p {
  font-family: var(--font-d); font-size: clamp(1.15rem, 1rem + 1.1vw, 1.7rem);
  line-height: 1.6; color: var(--ink); max-width: 34em; margin: 0 auto 18px;
}
.quote cite {
  font-style: normal; font-size: .82rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--clay);
}

/* 16 ============================================================== CTA */
.cta { padding-block: clamp(20px, 3vw, 40px) clamp(56px, 7vw, 96px); }
.cta__in {
  display: flex; align-items: center; justify-content: space-between;
  gap: clamp(24px, 4vw, 60px); flex-wrap: wrap;
  padding: clamp(34px, 4.4vw, 62px) clamp(28px, 4.4vw, 64px);
  border-radius: var(--r-l); color: #fff;
  background:
    radial-gradient(80% 130% at 88% 10%, rgba(200, 112, 76, .55), transparent 62%),
    radial-gradient(70% 120% at 4% 96%, rgba(79, 127, 111, .34), transparent 60%),
    linear-gradient(120deg, #241f19 0%, #332a21 54%, #42352a 100%);
  box-shadow: var(--shadow-l);
}
.cta__in h2 { color: #fff; margin-bottom: 10px; }
.cta__in p { color: rgba(255, 255, 255, .72); max-width: 42ch; margin: 0; }
.cta__side { display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.cta__meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: .85rem; color: rgba(255, 255, 255, .66); }
.cta__meta span { display: inline-flex; align-items: center; gap: 8px; }
.cta__meta .ico { width: 17px; height: 17px; opacity: .8; }

/* 17 ======================================================== 页头/面包屑 */
.pagehead {
  position: relative; padding-block: clamp(30px, 4vw, 54px) clamp(24px, 3vw, 38px);
  background: linear-gradient(180deg, #fdfbf8, var(--bg));
  border-bottom: 1px solid var(--line-2);
}
.pagehead--sub { padding-block: 20px 0; border-bottom: 0; background: none; }
.pagehead__title { margin: 14px 0 10px; }
.pagehead__desc { color: var(--muted); max-width: 60ch; margin: 0; }
.pagehead__desc b { color: var(--clay); font-weight: 700; }

.crumb { display: flex; align-items: center; gap: 9px; font-size: .84rem; color: var(--muted); flex-wrap: wrap; }
.crumb a { transition: color .2s; }
.crumb a:hover { color: var(--clay); }
.crumb__sep { color: var(--line); }
.crumb [aria-current] { color: var(--ink-2); font-weight: 500; }

/* 18 ======================================================== 筛选/分页 */
.filters {
  display: flex; flex-direction: column; gap: 16px;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--r-l); margin-bottom: clamp(26px, 3vw, 40px);
}
.filters__row { display: flex; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.filters__row + .filters__row { padding-top: 16px; border-top: 1px dashed var(--line); }
.filters__row legend {
  flex: none; width: 68px; padding-top: 8px;
  font-size: .8rem; font-weight: 700; letter-spacing: .08em;
  color: var(--muted-2); text-transform: uppercase;
}
.pills { display: flex; flex-wrap: wrap; gap: 8px; flex: 1 1 auto; }

.filters__tools {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding-top: 16px; border-top: 1px dashed var(--line);
}
.search {
  position: relative; display: flex; align-items: center; flex: 1 1 260px; max-width: 400px;
}
.search svg {
  position: absolute; left: 14px; width: 17px; height: 17px;
  color: var(--muted-2); pointer-events: none;
}
.search input {
  width: 100%; padding: 11px 16px 11px 40px;
  border: 1px solid var(--line); border-radius: var(--r-full);
  background: var(--surface-2); font-size: .92rem;
  transition: border-color .22s, background-color .22s, box-shadow .22s;
}
.search input::placeholder { color: var(--muted-2); }
.search input:focus {
  outline: none; border-color: var(--clay-l); background: #fff;
  box-shadow: 0 0 0 4px rgba(169, 79, 44, .1);
}
.search input::-webkit-search-cancel-button { cursor: pointer; }

.select { display: inline-flex; align-items: center; gap: 8px; font-size: .86rem; color: var(--muted); }
.select select {
  padding: 10px 14px; border: 1px solid var(--line); border-radius: var(--r-full);
  background: var(--surface-2); font-size: .9rem; cursor: pointer;
  transition: border-color .22s;
}
.select select:hover { border-color: var(--clay-l); }
.filters__clear { font-size: .86rem; color: var(--muted); border-bottom: 1px dashed currentColor; }
.filters__clear:hover { color: var(--clay); }

.pager {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  margin-top: clamp(34px, 4vw, 56px); flex-wrap: wrap;
}
.pager__nav {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 18px; border-radius: var(--r-full);
  border: 1px solid var(--line); background: var(--surface);
  font-size: .9rem; font-weight: 500; transition: all .22s var(--ease);
}
.pager__nav svg { width: 16px; height: 16px; fill: currentColor; }
.pager__nav:hover { border-color: var(--ink); transform: translateY(-1px); }
.pager__nav.is-off { opacity: .38; pointer-events: none; }
.pager__nums { display: inline-flex; align-items: center; gap: 5px; }
.pager__nums a, .pager__nums .is-cur {
  display: grid; place-items: center; min-width: 38px; height: 38px; padding-inline: 10px;
  border-radius: var(--r-s); font-size: .9rem; font-weight: 500;
  transition: all .2s var(--ease);
}
.pager__nums a { border: 1px solid transparent; color: var(--ink-2); }
.pager__nums a:hover { background: var(--surface); border-color: var(--line); color: var(--clay); }
.pager__nums .is-cur { background: var(--ink); color: #fff; font-weight: 600; }
.pager__gap { color: var(--muted-2); padding-inline: 2px; }

.empty {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: clamp(50px, 7vw, 90px) 20px; text-align: center;
  background: var(--surface); border: 1px dashed var(--line); border-radius: var(--r-l);
}
.empty__ico {
  display: grid; place-items: center; width: 58px; height: 58px;
  border-radius: 50%; background: var(--clay-wash); color: var(--clay); margin-bottom: 4px;
}
.empty h3 { margin: 0; }
.empty p { color: var(--muted); margin-bottom: 10px; }

/* 19 ============================================================ 详情 */
.detail {
  display: grid; grid-template-columns: 1.08fr .92fr;
  gap: clamp(28px, 4vw, 64px); align-items: start;
}
.detail__media { position: sticky; top: calc(var(--head-h) + 24px); }
.dstage {
  position: relative; margin: 0; display: grid; place-items: center;
  aspect-ratio: 1; border-radius: var(--r-l); overflow: hidden;
  background: radial-gradient(120% 100% at 50% 0%, #fff 0%, #f8f3ea 50%, #eee4d5 100%);
  border: 1px solid var(--line-2); cursor: zoom-in;
}
.dstage img {
  width: 84%; height: 84%; object-fit: contain;
  filter: drop-shadow(0 24px 28px rgba(80, 55, 30, .18));
  transition: transform .5s var(--ease);
}
.dstage:hover img { transform: scale(1.04); }
.dstage__hint {
  display: flex; align-items: center; justify-content: center; gap: 7px;
  margin: 12px 0 0; font-size: .84rem; color: var(--muted);
}
.dstage__hint svg { width: 16px; height: 16px; }

.detail__title { font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.5rem); margin-bottom: 16px; }
.detail__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }

.spec {
  border-top: 1px solid var(--line); margin-bottom: 26px;
}
.spec > div {
  display: flex; gap: 18px; padding: 13px 2px;
  border-bottom: 1px solid var(--line-2);
}
.spec dt {
  flex: none; width: 92px; font-size: .86rem; color: var(--muted);
}
.spec dd { flex: 1 1 auto; font-size: .95rem; font-weight: 500; color: var(--ink); margin: 0; }

.detail__desc { margin-bottom: 28px; }
.detail__desc h2 { font-size: 1rem; font-family: var(--font-b); font-weight: 700; letter-spacing: .04em; color: var(--muted-2); text-transform: uppercase; margin-bottom: 10px; }
.detail__desc p { font-size: .96rem; color: var(--ink-2); }
.detail__desc p.muted { font-size: .89rem; color: var(--muted); margin-top: 10px; }

.detail__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
.detail__back { font-size: .9rem; }

/* 20 ======================================================== 联系/表单 */
.contact { display: grid; grid-template-columns: .86fr 1.14fr; gap: clamp(28px, 3.6vw, 56px); align-items: start; }
.contact__h {
  font-family: var(--font-d); font-size: 1.4rem; margin-bottom: 20px;
  padding-bottom: 14px; border-bottom: 1px solid var(--line);
}
.contact__lede { color: var(--muted); font-size: .93rem; margin-bottom: 24px; }
.contact__note { font-size: .84rem; color: var(--muted-2); margin-top: 20px; }

.infocard {
  display: flex; gap: 14px; padding: 18px 20px; margin-bottom: 12px;
  background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--r); transition: border-color .3s, transform .3s var(--ease);
}
.infocard:hover { border-color: var(--line); transform: translateX(3px); }
.infocard__ico {
  display: grid; place-items: center; width: 40px; height: 40px; flex: none;
  border-radius: 11px; background: var(--clay-wash); color: var(--clay);
}
.infocard h3 {
  font-family: var(--font-b); font-size: .78rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 8px;
}
.infocard p { font-size: .92rem; color: var(--ink-2); margin-bottom: 5px; }
.infocard p:last-child { margin-bottom: 0; }
.infocard a { border-bottom: 1px solid transparent; transition: all .2s; }
.infocard a:hover { color: var(--clay); border-color: var(--clay); }
.infocard--links { background: var(--celadon-wash); border-color: rgba(79, 127, 111, .2); }
.infocard--links .infocard__ico { background: rgba(79, 127, 111, .14); color: var(--celadon); }

.contact__form {
  padding: clamp(24px, 3vw, 38px);
  background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--r-l); box-shadow: var(--shadow-s);
}
.qform { display: flex; flex-direction: column; gap: 18px; }
.qform__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field > span { font-size: .84rem; font-weight: 600; color: var(--ink-2); }
.field > span i { color: var(--clay); font-style: normal; }
.field input, .field textarea {
  width: 100%; padding: 12px 15px;
  border: 1px solid var(--line); border-radius: var(--r-s);
  background: var(--surface-2); font-size: .94rem; resize: vertical;
  transition: border-color .22s, background-color .22s, box-shadow .22s;
}
.field input::placeholder, .field textarea::placeholder { color: var(--muted-2); }
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--clay-l); background: #fff;
  box-shadow: 0 0 0 4px rgba(169, 79, 44, .1);
}
.field--full { grid-column: 1 / -1; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.qform__foot {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  padding-top: 6px;
}
.qform__privacy { font-size: .82rem; color: var(--muted-2); margin: 0; }

.alert {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 17px; border-radius: var(--r-s); font-size: .92rem; margin-bottom: 16px;
}
.alert--ok { background: var(--celadon-wash); color: #36604f; border: 1px solid rgba(79, 127, 111, .24); }
.alert--err { background: #fdf0ec; color: var(--clay-d); border: 1px solid rgba(169, 79, 44, .24); }
.alert .ico { width: 19px; height: 19px; }

/* 21 ============================================================ 页脚 */
.site-foot {
  background: #1e1a15; color: rgba(255, 255, 255, .62);
  padding-top: clamp(48px, 6vw, 76px); margin-top: clamp(40px, 5vw, 70px);
  font-size: .9rem;
}
.foot__grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1.2fr 1.1fr;
  gap: clamp(26px, 3.4vw, 52px);
}
.brand--foot .brand__mark { color: #f4efe6; }
.brand--foot .brand__text strong { color: #fff; }
.brand--foot .brand__text small { color: rgba(255, 255, 255, .45); }
.foot__tag { margin: 18px 0 20px; font-size: .88rem; line-height: 1.75; }
.foot__badges { display: flex; flex-wrap: wrap; gap: 8px; }
.foot__col h4 {
  font-family: var(--font-b); font-size: .78rem; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase; color: rgba(255, 255, 255, .44);
  margin-bottom: 16px;
}
.foot__h4--mt { margin-top: 24px; }
.foot__col a, .foot__col p { display: block; margin-bottom: 10px; font-size: .89rem; transition: color .2s; }
.foot__col a:hover { color: var(--clay-l); }
.foot__col p { margin-bottom: 10px; }

.foot__bottom {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  flex-wrap: wrap; margin-top: clamp(38px, 4.6vw, 62px);
  padding-block: 22px; border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: .81rem; color: rgba(255, 255, 255, .42);
}
.foot__meta { display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.foot__meta a { transition: color .2s; }
.foot__meta a:hover { color: var(--clay-l); }
.dot { width: 3px; height: 3px; border-radius: 50%; background: currentColor; opacity: .5; }

/* 22 ======================================================= 灯箱/回顶 */
.totop {
  position: fixed; right: clamp(16px, 2.4vw, 30px); bottom: clamp(16px, 2.4vw, 30px);
  z-index: 80; width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--ink); color: #fff; box-shadow: var(--shadow-m);
  opacity: 0; transform: translateY(14px); pointer-events: none;
  transition: all .32s var(--ease);
}
.totop svg { width: 20px; height: 20px; fill: currentColor; }
.totop.is-on { opacity: 1; transform: translateY(0); pointer-events: auto; }
.totop:hover { background: var(--clay); }

.lightbox {
  position: fixed; inset: 0; z-index: 200;
  display: grid; place-items: center; padding: clamp(18px, 4vw, 54px);
  background: rgba(22, 19, 15, .88); backdrop-filter: blur(6px);
  opacity: 0; pointer-events: none; transition: opacity .28s var(--ease);
}
.lightbox.is-on { opacity: 1; pointer-events: auto; }
.lightbox img {
  max-width: min(1100px, 92vw); max-height: 88vh; width: auto; height: auto;
  border-radius: var(--r); background: #fff; padding: 10px;
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, .8);
  transform: scale(.96); transition: transform .32s var(--ease);
}
.lightbox.is-on img { transform: scale(1); }
.lightbox__x {
  position: absolute; right: clamp(16px, 3vw, 34px); top: clamp(16px, 3vw, 30px);
  width: 44px; height: 44px; border-radius: 50%; font-size: 1.7rem; line-height: 1;
  color: #fff; background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .2);
  display: grid; place-items: center; transition: background-color .2s;
}
.lightbox__x:hover { background: rgba(255, 255, 255, .22); }

/* 404 */
.nf { text-align: center; }
.nf__in { display: flex; flex-direction: column; align-items: center; gap: 8px; padding-block: clamp(40px, 7vw, 90px); }
.nf__code {
  font-family: var(--font-d); font-size: clamp(4rem, 3rem + 8vw, 9rem);
  line-height: 1; color: var(--clay); opacity: .16; font-weight: 600;
}
.nf h1 { margin-bottom: 6px; }
.nf p { color: var(--muted); }
.nf__cta { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 22px; }

/* 23 ============================================================ 动效 */
.reveal {
  opacity: 0; transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

/* 24 ========================================================== 响应式 */
@media (max-width: 1120px) {
  .grid--5 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .promises--center { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot__grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .foot__col:last-child { grid-column: span 3; }
  .foot__col:last-child h4:first-of-type { margin-top: 0; }
}

@media (max-width: 980px) {
  :root { --head-h: 66px; }

  .topbar__right { display: none; }

  .nav {
    position: fixed; top: 0; right: 0; bottom: 0; z-index: 89;
    width: min(84vw, 340px); margin: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 84px 22px 30px;
    background: var(--bg); border-left: 1px solid var(--line);
    box-shadow: -20px 0 60px -30px rgba(40, 30, 20, .5);
    /* 闭合态曾经是 translateX(102%)：抽屉跑到视口右侧外面，把布局视口整个撑宽
       （390 的手机会变成 724，右侧多出一条能横向拖动的空白）。
       改成"原地淡入 + 轻微放大"——盒子始终留在视口内，不产生任何横向溢出，
       同时避开 overflow-x:clip/hidden（实测两者都会让顶栏的 position:sticky 失效）。 */
    visibility: hidden; opacity: 0;
    transform-origin: 100% 50%; transform: scale(.97);
    transition: transform .34s var(--ease), opacity .3s var(--ease), visibility .34s;
    overflow-y: auto;
  }
  .nav.is-open { visibility: visible; opacity: 1; transform: none; }
  .nav__link { padding: 14px 16px; border-radius: var(--r-s); font-size: 1.02rem; }
  .nav__link::after { display: none; }
  .nav__link.is-active { background: var(--clay-wash); }
  .nav__foot { display: block; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
  .nav__legacy { align-self: flex-start; margin: 10px 16px 0; padding: 9px 15px; font-size: .92rem; }
  .nav__foot .btn { width: 100%; }

  .burger { display: flex; }
  .head__cta { display: none; }

  .hero__in { grid-template-columns: 1fr; gap: 40px; }
  .hero__stage { order: -1; aspect-ratio: 1 / .8; min-height: 300px; max-width: 560px; margin-inline: auto; width: 100%; }
  .hero__copy { text-align: left; }
  .hero__stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .about, .detail, .contact { grid-template-columns: 1fr; }
  .about--flip .about__media { order: 0; }
  .about--flip .about__copy { order: 1; }
  .about__media { max-width: 620px; }
  .detail__media { position: static; }
  .dstage { max-width: 560px; }

  .certs, .famgrid { grid-template-columns: 1fr; }
  .famgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .gallery__item, .gallery__item--wide { grid-column: span 2; }

  .brands--lg .brands__item { font-size: 1.2rem; padding: 15px 28px; }
}

@media (max-width: 720px) {
  .grid--5, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps, .promises, .promises--center { grid-template-columns: 1fr; }
  .qform__grid { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 8px; }
  .hero__badge { left: auto; right: 0; top: 2%; }
  .hero__p--1 { width: 62%; }
  .hero__p--2 { width: 38%; }
  .hero__p--3 { width: 32%; }

  .foot__grid { grid-template-columns: 1fr 1fr; }
  .foot__brand { grid-column: span 2; }
  .foot__col:last-child { grid-column: span 2; }
  .foot__bottom { flex-direction: column; align-items: flex-start; }

  .filters__row { flex-direction: column; gap: 10px; }
  .filters__row legend { width: auto; padding-top: 0; }
  .search { max-width: none; }
  .brands__item { padding: 12px 24px; font-size: 1.1rem; }

  .certs--wide { max-width: none; }
  .certcard__stage { padding: 14px; }

  .about__seal { width: 90px; height: 90px; right: 0; bottom: -10px; }
  .about__seal strong { font-size: 1.4rem; }

  .detail__cta .btn, .hero__cta .btn { flex: 1 1 auto; }
  .spec dt { width: 76px; }
}

@media (max-width: 420px) {
  .brand__text small { display: none; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .famgrid { grid-template-columns: 1fr; }
  .cta__in { padding: 28px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-head, .topbar, .totop, .cta, .site-foot, .filters, .pager { display: none; }
  body { background: #fff; }
  .pcard, .ccard, .fcard { break-inside: avoid; }
}