/* ==========================================================================
   合一超市 · HEYI ORIENTAL LIVING
   视觉系统：宋氏美学 / 极简 / 留白
   --------------------------------------------------------------------------
   01 Tokens        02 Reset        03 Layout       04 Nav
   05 Hero          06 Section      07 Components   08 Product
   09 Footer        10 Motion       11 Responsive
   ========================================================================== */

/* ---------- 01 Tokens ---------------------------------------------------- */
:root{
  /* 墨色阶 —— 由浓至淡 */
  --ink:       #1B1A17;
  --ink-2:     #4A4741;
  --ink-3:     #8C877D;
  --ink-4:     #B6B0A4;

  /* 纸色阶 —— 宣纸到米白 */
  --paper:     #FBF9F4;
  --paper-2:   #F4F1E9;
  --paper-3:   #ECE7DC;

  /* 线 —— 只用来分割，不用来装饰 */
  --line:      #DED8CB;
  --line-soft: #EAE5DA;

  /* 点缀 —— 全站唯一的暖色，面积极小 */
  --cinnabar:  #9C3A28;
  --tea:       #7D6A4F;

  /* 字体 */
  --font-serif: "Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun","Songti TC",serif;
  --font-latin: "Cormorant Garamond","Times New Roman",Georgia,serif;

  /* 字号 */
  --fs-hero: clamp(72px, 13vw, 186px);
  --fs-disp: clamp(42px, 6.2vw, 88px);
  --fs-h1:   clamp(32px, 4.4vw, 58px);
  --fs-h2:   clamp(24px, 3.0vw, 38px);
  --fs-h3:   clamp(17px, 1.5vw, 21px);
  --fs-body: 15px;
  --fs-sm:   13px;
  --fs-xs:   11px;

  /* 尺度 */
  --maxw:   1280px;
  --gutter: clamp(22px, 5vw, 72px);
  --sec-y:  clamp(96px, 14vw, 190px);

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

/* ---------- 02 Reset ----------------------------------------------------- */
*,*::before,*::after{ box-sizing:border-box; }

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:110px;
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-serif);
  font-size:var(--fs-body);
  font-weight:300;
  line-height:2;
  letter-spacing:.045em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* 宣纸颗粒 —— 极淡，只在不经意间被看见 */
body::after{
  content:"";
  position:fixed; inset:0;
  z-index:9998;
  pointer-events:none;
  opacity:.032;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4,p,figure,blockquote{ margin:0; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
ul{ margin:0; padding:0; list-style:none; }
::selection{ background:var(--ink); color:var(--paper); }

/* ---------- 03 Layout ---------------------------------------------------- */
.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 var(--gutter); }
.wrap--narrow{ max-width:840px; }
.wrap--text{ max-width:660px; }

main{ position:relative; z-index:1; }

/* ---------- 04 Nav ------------------------------------------------------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  border-bottom:1px solid transparent;
  transition:background .6s var(--ease), border-color .6s var(--ease);
}
.nav.is-solid{
  background:rgba(251,249,244,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--line-soft);
}
.nav__inner{
  max-width:var(--maxw); margin:0 auto;
  padding:0 var(--gutter);
  height:76px;
  display:flex; align-items:center; justify-content:space-between; gap:24px;
}

.brand{ display:flex; align-items:center; gap:13px; }
.brand__seal{
  display:flex; align-items:center; justify-content:center;
  width:32px; height:32px;
  background:var(--cinnabar); color:var(--paper);
  font-size:18px; line-height:1; letter-spacing:0;
  border-radius:2px;
  padding-bottom:1px;
}
.brand__text{ font-size:15px; letter-spacing:.34em; text-indent:.34em; }

.nav__menu{ display:flex; align-items:center; gap:clamp(20px,3.2vw,46px); }
.nav__link{
  position:relative;
  font-size:14px; letter-spacing:.2em; text-indent:.2em;
  color:var(--ink-2);
  transition:color .45s var(--ease);
}
.nav__link::after{
  content:"";
  position:absolute; left:0; right:0; bottom:-7px;
  height:1px; background:var(--ink);
  transform:scaleX(0); transform-origin:left;
  transition:transform .55s var(--ease);
}
.nav__link:hover{ color:var(--ink); }
.nav__link:hover::after{ transform:scaleX(1); }
.nav__link.is-active{ color:var(--ink); }
.nav__link.is-active::after{ transform:scaleX(1); background:var(--cinnabar); }

.nav__toggle{
  display:none;
  width:42px; height:42px;
  align-items:center; justify-content:center;
  flex-direction:column; gap:5px;
}
.nav__toggle span{
  display:block; width:20px; height:1px; background:var(--ink);
  transition:transform .5s var(--ease), opacity .3s;
}
.nav__toggle.is-open span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2){ opacity:0; }
.nav__toggle.is-open span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

/* ---------- 05 Hero ------------------------------------------------------ */
.hero{
  position:relative;
  min-height:100vh;   /* 旧浏览器回退 */
  min-height:100svh;
  padding:130px 0 32px;
  display:flex; flex-direction:column;
}
.hero__center{
  flex:1;
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  text-align:center;
}
.hero__rule{
  display:block;
  width:1px;
  height:clamp(40px,7vh,84px);
  background:var(--line);
}
.hero__title{
  font-size:var(--fs-hero);
  font-weight:400;
  line-height:1.12;
  letter-spacing:.24em;
  text-indent:.24em;
  margin:clamp(20px,3.4vh,40px) 0;
}
.hero__en{
  margin-top:clamp(28px,4.6vh,52px);
  font-family:var(--font-latin);
  font-size:clamp(11px,1.05vw,14px);
  font-weight:300;
  letter-spacing:.52em;
  text-indent:.52em;
  text-transform:uppercase;
  color:var(--ink-3);
}
.hero__vtext{
  position:absolute;
  right:calc(var(--gutter) - 8px); top:50%;
  transform:translateY(-50%);
  writing-mode:vertical-rl;
  font-size:13px;
  letter-spacing:.62em;
  color:var(--ink-3);
}
.hero__foot{
  display:flex; align-items:flex-end; justify-content:space-between;
  gap:32px; flex-wrap:wrap;
  max-width:var(--maxw); width:100%;
  margin:0 auto; padding:0 var(--gutter);
}
.hero__desc{
  font-size:13px; line-height:2.2; letter-spacing:.16em;
  color:var(--ink-2);
}
.hero__scroll{
  display:flex; flex-direction:column; align-items:center; gap:14px;
  font-family:var(--font-latin);
  font-size:10px; letter-spacing:.4em; text-transform:uppercase;
  color:var(--ink-3);
}
.hero__scroll i{ font-style:normal; }
.hero__scroll span{
  display:block; width:1px; height:54px;
  background:linear-gradient(180deg,transparent,var(--ink-4));
  transform-origin:top;
  animation:scrollLine 2.8s var(--ease) infinite;
}
@keyframes scrollLine{
  0%,100%{ transform:scaleY(.25); opacity:.35; }
  50%    { transform:scaleY(1);   opacity:1;   }
}

/* 首页首屏变体（长标题 + 双按钮） */
.hero__brand{
  font-size:13px; letter-spacing:.44em; text-indent:.44em;
  color:var(--ink-3);
  margin-bottom:clamp(20px,3vh,34px);
}
.hero__title--sm{
  font-size:var(--fs-h1);
  font-weight:400; line-height:1.52;
  letter-spacing:.1em; text-indent:.1em;
  margin:clamp(14px,2.2vh,26px) 0 0;
}
.hero__lead{
  margin-top:clamp(22px,3.2vh,36px);
  max-width:620px;
  font-size:14.5px; line-height:2.15;
  color:var(--ink-2);
}
.hero__actions{
  display:flex; flex-wrap:wrap;
  gap:14px; justify-content:center;
  margin-top:clamp(30px,4.4vh,50px);
}

/* ---------- 06 Section --------------------------------------------------- */
.section{ padding:var(--sec-y) 0; }
.section--tight{ padding:calc(var(--sec-y) * .58) 0; }
.section--paper{ background:var(--paper-2); }
.section--line{ border-top:1px solid var(--line-soft); }

/* 首页主推产品 —— 紧贴首屏，间距为 0 */
.section--featured{ padding-top:0; }

.eyebrow{
  display:flex; align-items:center; gap:14px;
  font-size:var(--fs-sm); letter-spacing:.34em;
  color:var(--ink-3);
  margin-bottom:32px;
}
.eyebrow::before{ content:""; width:34px; height:1px; background:var(--line); }
.eyebrow--center{ justify-content:center; }
.eyebrow--center::after{ content:""; width:34px; height:1px; background:var(--line); }

.sec-head{ max-width:780px; }
.sec-head--center{ margin:0 auto; text-align:center; }
.sec-title{
  font-size:var(--fs-h1);
  font-weight:400; line-height:1.5;
  letter-spacing:.1em;
}
.sec-lead{
  margin-top:28px;
  font-size:15px; line-height:2.15; letter-spacing:.055em;
  color:var(--ink-2);
  max-width:620px;
}
.sec-head--center .sec-lead{ margin-left:auto; margin-right:auto; }

.page-head{
  padding:clamp(148px,19vw,214px) 0 clamp(56px,7vw,92px);
  border-bottom:1px solid var(--line-soft);
}
.page-head__title{
  font-size:var(--fs-disp);
  font-weight:400; line-height:1.25;
  letter-spacing:.16em;
  text-indent:.16em;
}
.page-head__en{
  margin-top:22px;
  font-family:var(--font-latin);
  font-size:12px; letter-spacing:.46em; text-transform:uppercase;
  color:var(--ink-3);
}
.page-head__lead{
  margin-top:34px; max-width:620px;
  font-size:15px; line-height:2.15; color:var(--ink-2);
}

/* 大字引言 */
.display{
  font-size:var(--fs-h2);
  font-weight:400; line-height:1.75;
  letter-spacing:.085em;
}
.display em{ font-style:normal; color:var(--cinnabar); }

/* 编号条目（理念 / 标准） */
.principles{
  display:grid; grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
}
.principle{
  padding:clamp(38px,4vw,56px) clamp(16px,2.6vw,44px) 6px;
  border-left:1px solid var(--line-soft);
}
.principle:first-child{ border-left:0; padding-left:0; }
.principle:last-child{ padding-right:0; }
.principle__no{
  font-family:var(--font-latin);
  font-size:12px; letter-spacing:.32em;
  color:var(--cinnabar);
}
.principle__title{
  margin-top:24px;
  font-size:var(--fs-h3); font-weight:400;
  letter-spacing:.18em;
}
.principle__text{
  margin-top:16px;
  font-size:14px; line-height:2.15;
  color:var(--ink-2);
}

/* 清单（选物标准等） */
.list-lined{ border-top:1px solid var(--line); }
.list-lined li{
  display:grid; grid-template-columns:88px 1fr;
  gap:clamp(16px,3vw,48px);
  align-items:baseline;
  padding:clamp(22px,2.6vw,34px) 0;
  border-bottom:1px solid var(--line-soft);
}
.list-lined__key{
  font-size:var(--fs-h3); letter-spacing:.2em;
}
.list-lined__val{
  font-size:14px; line-height:2.1; color:var(--ink-2);
}

/* 数字条 */
.stats{
  display:grid; grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat{
  padding:clamp(30px,3.4vw,46px) 0;
  text-align:center;
  border-left:1px solid var(--line-soft);
}
.stat:first-child{ border-left:0; }
.stat__num{
  font-family:var(--font-latin);
  font-size:clamp(28px,3.4vw,44px);
  font-weight:400; line-height:1;
  letter-spacing:.04em;
}
.stat__label{
  margin-top:14px;
  font-size:12px; letter-spacing:.26em; color:var(--ink-3);
}

/* 分栏 */
.split{
  display:grid; grid-template-columns:1fr 1fr;
  gap:clamp(40px,6vw,110px);
  align-items:center;
}
.split--wide{ grid-template-columns:1.15fr .85fr; }

/* 竖排点缀 */
.vtext{
  writing-mode:vertical-rl;
  font-size:13px; letter-spacing:.56em;
  color:var(--ink-4);
}

/* ---------- 07 Components ------------------------------------------------ */
.btn{
  display:inline-flex; align-items:center; gap:16px;
  padding:17px 38px;
  border:1px solid var(--ink);
  font-size:13px; letter-spacing:.28em; text-indent:.28em;
  color:var(--ink);
  transition:background .55s var(--ease), color .55s var(--ease), border-color .55s var(--ease);
}
.btn:hover{ background:var(--ink); color:var(--paper); }
.btn__arrow{ transition:transform .55s var(--ease); text-indent:0; }
.btn:hover .btn__arrow{ transform:translateX(6px); }

.btn--ghost{ border-color:var(--line); }
.btn--ghost:hover{ background:none; border-color:var(--ink); color:var(--ink); }

.tlink{
  display:inline-flex; align-items:center; gap:14px;
  font-size:13px; letter-spacing:.26em;
  color:var(--ink-2);
  transition:color .45s var(--ease);
}
.tlink::after{
  content:"";
  width:28px; height:1px; background:var(--ink-3);
  transition:width .55s var(--ease), background .45s var(--ease);
}
.tlink:hover{ color:var(--ink); }
.tlink:hover::after{ width:48px; background:var(--cinnabar); }

/* 引用 */
.quote{
  text-align:center;
  padding:var(--sec-y) 0;
}
.quote__text{
  font-size:var(--fs-h2);
  font-weight:400; line-height:1.85;
  letter-spacing:.1em;
}
.quote__source{
  margin-top:36px;
  font-size:12px; letter-spacing:.32em;
  color:var(--ink-3);
}
.quote__mark{
  display:block; margin:0 auto 40px;
  width:1px; height:56px; background:var(--line);
}

/* 名片 / 门店 */
.store-card{
  padding:clamp(30px,3.4vw,44px) 0;
  border-top:1px solid var(--line);
}
.store-card__head{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:20px; flex-wrap:wrap;
  margin-bottom:26px;
}
.store-card__name{
  font-size:var(--fs-h3); font-weight:400; letter-spacing:.18em;
}
.store-card__tag{
  font-size:11px; letter-spacing:.28em; color:var(--cinnabar);
}
.store-card__rows{ display:grid; gap:10px; }
.store-card__row{
  display:grid; grid-template-columns:76px 1fr;
  gap:18px;
  font-size:13.5px; line-height:2; color:var(--ink-2);
}
.store-card__row dt{ color:var(--ink-3); letter-spacing:.2em; }
.store-card__row dd{ margin:0; }
.store-card__row a:hover{ color:var(--cinnabar); }

/* ---------- 08 Product --------------------------------------------------- */
.products{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:clamp(34px,4vw,60px) clamp(18px,2.4vw,36px);
}
.products--3{ grid-template-columns:repeat(3,1fr); }
.products--2{ grid-template-columns:repeat(2,1fr); }

.product{ position:relative; }
.product__art{
  position:relative;
  aspect-ratio:1/1;
  display:flex; align-items:center; justify-content:center;
  background:var(--paper-2);
  overflow:hidden;
  transition:background .7s var(--ease);
}
.product__art svg{
  width:58%; max-width:186px;
  color:var(--ink-4);
  transition:color .7s var(--ease), transform .9s var(--ease);
}
.product:hover .product__art{ background:var(--paper-3); }
.product:hover .product__art svg{ color:var(--ink-2); transform:translateY(-5px); }

/* 卡片内的主图轮播：铺满图区，圆点悬浮在底部 */
.product__art .media-scroll{
  position:absolute; inset:0;
  display:flex; flex-direction:column;
}
.product__art .media-scroll__track{ flex:1; min-height:0; }
.product__art .media-scroll__slide{ height:100%; }
.product__art .media-scroll__media{
  width:100%; height:100%;
  max-height:100%;
  object-fit:cover;
}
.product__art .media-scroll__dots{
  position:absolute; left:0; right:0; bottom:12px;
  padding:0;
}
.product__art .media-scroll__dots i{
  width:4px; height:4px;
  background:var(--ink-4);
  opacity:.55;
}
.product__art .media-scroll__dots i.is-on{
  background:var(--cinnabar);
  opacity:1;
}

/* 产品卡图片悬停放大（首页主推 / 列表卡通用） */
.product__art .pmedia,
.product__art .media-scroll__media{
  transition:transform 1.1s var(--ease);
}
.product:hover .product__art .pmedia,
.product:hover .product__art .media-scroll__media{
  transform:scale(1.06);
}

.product__info{ padding-top:22px; }
.product__cat{
  font-size:var(--fs-xs); letter-spacing:.32em;
  color:var(--ink-3);
}
.product__name{
  margin-top:11px;
  font-size:16px; font-weight:400;
  letter-spacing:.13em;
}
.product__meta{
  margin-top:9px;
  font-size:12px; letter-spacing:.09em;
  color:var(--ink-3);
}
.product__price{
  margin-top:15px;
  font-family:var(--font-latin);
  font-size:16px; letter-spacing:.06em;
}

/* 价格层级：数字主视觉，「元」与后缀（起等）小字弱化 */
.price__unit,
.price__suffix{
  font-family:var(--font-cn, inherit);
  font-size:.6em;
  letter-spacing:.08em;
  color:var(--ink-3);
  margin-left:3px;
}
.product__badge{
  position:absolute; top:14px; left:14px;
  font-size:10px; letter-spacing:.26em;
  color:var(--cinnabar);
}

/* 筛选 */
.filter{
  display:flex; flex-wrap:wrap;
  gap:clamp(18px,3vw,40px);
  padding-bottom:30px;
  border-bottom:1px solid var(--line);
  margin-bottom:clamp(46px,6vw,80px);
}
.filter__btn{
  position:relative;
  padding-bottom:7px;
  font-size:13px; letter-spacing:.26em;
  color:var(--ink-3);
  transition:color .45s var(--ease);
}
.filter__btn::after{
  content:"";
  position:absolute; left:0; right:0; bottom:0;
  height:1px; background:var(--cinnabar);
  transform:scaleX(0); transform-origin:left;
  transition:transform .5s var(--ease);
}
.filter__btn:hover{ color:var(--ink); }
.filter__btn.is-active{ color:var(--ink); }
.filter__btn.is-active::after{ transform:scaleX(1); }

.product.is-hidden{ display:none; }

/* 分类索引 */
.cat-index{
  display:flex; flex-wrap:wrap;
  gap:clamp(18px,3.6vw,54px);
  padding:34px 0;
  border-bottom:1px solid var(--line);
}
.cat-index a{
  display:flex; align-items:baseline; gap:11px;
  font-size:14px; letter-spacing:.24em;
  color:var(--ink-2);
  transition:color .45s var(--ease);
}
.cat-index a:hover{ color:var(--cinnabar); }
.cat-index em{
  font-style:normal;
  font-family:var(--font-latin);
  font-size:11px; letter-spacing:.2em;
  color:var(--ink-4);
}

/* 分类区块头 */
.cat-head{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:24px; flex-wrap:wrap;
  padding-bottom:26px;
  border-bottom:1px solid var(--line);
  margin-bottom:clamp(40px,5vw,64px);
}
.cat-head__title{
  font-size:var(--fs-h2); font-weight:400; letter-spacing:.16em;
}
.cat-head__en{
  font-family:var(--font-latin);
  font-size:11px; letter-spacing:.42em; text-transform:uppercase;
  color:var(--ink-3);
}

/* ---------- 09 Footer ---------------------------------------------------- */
.footer{
  background:var(--paper-2);
  border-top:1px solid var(--line);
  padding:clamp(66px,8vw,116px) 0 40px;
}
.footer__grid{
  display:grid;
  grid-template-columns:1.5fr repeat(3,1fr);
  gap:clamp(34px,4.4vw,70px);
}
.footer__brand{
  font-size:22px; letter-spacing:.38em; text-indent:.38em;
}
.footer__tag{
  margin-top:18px;
  font-size:12px; letter-spacing:.22em;
  color:var(--ink-3);
}
.footer__seal{
  display:inline-flex; align-items:center; justify-content:center;
  width:44px; height:44px;
  margin-top:28px;
  border:1px solid var(--cinnabar);
  color:var(--cinnabar);
  font-size:13px; letter-spacing:.06em;
  border-radius:3px;
  opacity:.85;
}
.footer__title{
  font-size:12px; letter-spacing:.32em;
  color:var(--ink-3);
  margin-bottom:24px;
}
.footer__list li{
  margin-bottom:13px;
  font-size:13px; letter-spacing:.11em;
  color:var(--ink-2);
}
.footer__list a:hover{ color:var(--cinnabar); }
.footer__bottom{
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; flex-wrap:wrap;
  margin-top:clamp(50px,6vw,84px);
  padding-top:28px;
  border-top:1px solid var(--line-soft);
  font-size:11px; letter-spacing:.18em;
  color:var(--ink-3);
}

/* ==========================================================================
   09b 内容组件（产品详情 / 规格 / 分类）
   ========================================================================== */

/* 分类卡 —— 首页三大产品分类 */
.cats{
  display:grid; grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
}
.cat{
  display:block;
  padding:clamp(36px,4vw,54px) clamp(16px,2.6vw,44px) 6px;
  border-left:1px solid var(--line-soft);
}
.cat:first-child{ border-left:0; padding-left:0; }
.cat:last-child{ padding-right:0; }
.cat__no{
  font-family:var(--font-latin);
  font-size:12px; letter-spacing:.32em;
  color:var(--cinnabar);
}
.cat__title{
  margin-top:22px;
  font-size:var(--fs-h3); font-weight:400;
  letter-spacing:.2em;
  transition:color .45s var(--ease);
}
.cat:hover .cat__title{ color:var(--cinnabar); }
.cat__sub{
  margin-top:12px;
  font-size:13px; letter-spacing:.14em;
  color:var(--ink-3);
}
.cat__text{
  margin-top:20px;
  font-size:14px; line-height:2.15;
  color:var(--ink-2);
}
.cat__more{ margin-top:26px; }

/* 规格表 —— 展示价 / 机芯 / 镜面 … */
.spec{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 clamp(24px,3.4vw,52px);
  border-top:1px solid var(--line);
}
.spec__row{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:16px;
  padding:14px 0;
  border-bottom:1px solid var(--line-soft);
}
.spec__k{
  font-size:12px; letter-spacing:.24em;
  color:var(--ink-3);
  white-space:nowrap;
}
.spec__v{ font-size:14px; letter-spacing:.08em; }
.spec__v--price{
  font-family:var(--font-latin);
  font-size:18px; letter-spacing:.04em;
}

/* 要点列表 */
.points{ display:grid; gap:15px; }
.points li{
  position:relative;
  padding-left:24px;
  font-size:14px; line-height:2;
  color:var(--ink-2);
}
.points li::before{
  content:"";
  position:absolute; left:0; top:.95em;
  width:11px; height:1px;
  background:var(--ink-4);
}

/* 标签 */
.tags{ display:flex; flex-wrap:wrap; gap:10px; }
.tags span{
  padding:7px 15px;
  border:1px solid var(--line);
  border-radius:2px;
  font-size:12px; letter-spacing:.14em;
  color:var(--ink-2);
}

/* 声明块 */
.note{
  padding:clamp(22px,2.8vw,32px) clamp(22px,3vw,38px);
  background:var(--paper-2);
  font-size:12.5px; line-height:2.05; letter-spacing:.06em;
  color:var(--ink-3);
}

/* 区块小标题 */
.blockhead{
  display:flex; align-items:center; gap:12px;
  font-size:15px; letter-spacing:.2em;
  margin-bottom:22px;
}
.blockhead::before{
  content:"";
  width:3px; height:14px;
  background:var(--cinnabar);
}

/* 产品详情条目 */
.piece{ padding:clamp(56px,7vw,104px) 0; border-top:1px solid var(--line); }
.piece:first-of-type{ border-top:0; }
.piece__head{ margin-bottom:clamp(30px,3.6vw,48px); }
.piece__no{
  display:block;
  font-family:var(--font-latin);
  font-size:12px; letter-spacing:.32em;
  color:var(--cinnabar);
  margin-bottom:16px;
}
.piece__title{
  font-size:var(--fs-h2); font-weight:400;
  letter-spacing:.14em; line-height:1.4;
}
.piece__sub{
  margin-top:16px;
  font-size:13px; letter-spacing:.18em;
  color:var(--ink-3);
}
.piece__lead{
  margin-top:22px;
  font-size:15px; line-height:2.1;
  color:var(--ink-2);
  max-width:640px;
}
.piece__grid{
  display:grid;
  grid-template-columns:.82fr 1.18fr;
  gap:clamp(40px,6vw,104px);
  align-items:start;
}
.piece__art{
  display:flex; align-items:center; justify-content:center;
  aspect-ratio:1/1;
  background:var(--paper-2);
}
.piece__art svg{ width:64%; max-width:280px; color:var(--ink-3); }
.piece__block + .piece__block{ margin-top:clamp(34px,4vw,50px); }
.piece__body{
  font-size:14.5px; line-height:2.15;
  color:var(--ink-2);
}

/* 关键词行 */
.keywords{
  display:flex; flex-wrap:wrap; align-items:center;
  gap:clamp(14px,2.4vw,30px);
  font-size:13px; letter-spacing:.2em;
  color:var(--ink-3);
}
.keywords i{ font-style:normal; color:var(--line); }

/* 整理中 / 空状态 */
.placeholder{
  text-align:center;
  padding:clamp(60px,9vw,130px) 0;
}
.placeholder__mark{
  display:block; margin:0 auto clamp(32px,4vw,48px);
  width:1px; height:clamp(50px,7vh,86px);
  background:var(--line);
}

/* 联系信息 */
.contact-line{
  display:flex; align-items:baseline; gap:18px; flex-wrap:wrap;
}
.contact-line__num{
  font-family:var(--font-latin);
  font-size:clamp(26px,3.6vw,42px);
  letter-spacing:.06em;
}

/* ---------- 10 Motion ---------------------------------------------------- */
body.js .reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity 1.05s var(--ease), transform 1.05s var(--ease);
  transition-delay:calc(var(--d,0) * 90ms);
  will-change:opacity, transform;
}
body.js .reveal.is-in{ opacity:1; transform:none; }

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  body.js .reveal{ opacity:1; transform:none; transition:none; }
  .hero__scroll span{ animation:none; }
}

/* ---------- 11 Responsive ------------------------------------------------ */
@media (max-width:1080px){
  :root{ --fs-hero: clamp(60px, 11vw, 130px); }
  .products{ grid-template-columns:repeat(3,1fr); }
  .products--3{ grid-template-columns:repeat(3,1fr); }
  .principles{ grid-template-columns:1fr; }
  .principle{
    border-left:0;
    border-top:1px solid var(--line-soft);
    padding:clamp(30px,4vw,42px) 0;
  }
  .principle:first-child{ border-top:0; padding-top:clamp(38px,4vw,56px); }
  .cats{ grid-template-columns:1fr; }
  .cat{
    border-left:0;
    border-top:1px solid var(--line-soft);
    padding:clamp(30px,4vw,42px) 0;
  }
  .cat:first-child{ border-top:0; padding-top:clamp(36px,4vw,54px); }
  .footer__grid{ grid-template-columns:1fr 1fr; }
  .media-scroll__media{ max-height:480px; }
}

@media (max-width:820px){
  :root{ --fs-hero: clamp(52px, 13vw, 96px); }
  html{ scroll-padding-top:88px; }
  .nav__inner{ height:66px; }
  .nav__menu{
    position:fixed; inset:0;
    flex-direction:column; align-items:center; justify-content:center;
    gap:34px;
    background:var(--paper);
    opacity:0; visibility:hidden;
    transition:opacity .5s var(--ease), visibility .5s;
  }
  .nav__menu.is-open{ opacity:1; visibility:visible; }
  .nav__menu .nav__link{ font-size:22px; letter-spacing:.34em; }
  .nav__toggle{ display:flex; }
  .nav.is-solid{ background:rgba(251,249,244,.94); }
  .nav:has(.nav__menu.is-open){ background:var(--paper); }

  .hero{ padding-top:112px; }
  .hero__vtext{ display:none; }
  .split, .split--wide{ grid-template-columns:1fr; gap:clamp(34px,7vw,54px); }

  .piece__grid{ grid-template-columns:1fr; gap:clamp(32px,6vw,48px); }
  .piece__art svg{ width:52%; }
  .piece__art img.pmedia,
  .piece__art video.pmedia{ max-height:440px; }

  .products, .products--3, .products--2{ grid-template-columns:repeat(2,1fr); }
  .stats{ grid-template-columns:repeat(2,1fr); }
  .stat{ border-top:1px solid var(--line-soft); }
  .stat:nth-child(1), .stat:nth-child(2){ border-top:0; }
  .stat:nth-child(3){ border-left:0; }
  .media-scroll__media{ max-height:420px; }
}

@media (max-width:560px){
  body{ font-size:14px; line-height:1.95; }
  html{ scroll-padding-top:80px; }
  .hero{ padding-top:100px; padding-bottom:36px; }
  .hero__brand{ letter-spacing:.3em; text-indent:.3em; }
  .hero__title--sm{ letter-spacing:.06em; text-indent:.06em; }
  .hero__lead{ font-size:13.5px; }
  .hero__actions{ gap:10px; }
  .btn{ padding:14px 26px; font-size:12px; }
  .hero__foot{ flex-direction:column; align-items:flex-start; gap:26px; }
  .hero__scroll{ flex-direction:row; align-items:center; gap:12px; }
  .hero__scroll span{
    width:44px; height:1px;
    background:linear-gradient(90deg,transparent,var(--ink-4));
    animation:none;
  }
  .products, .products--3, .products--2{ grid-template-columns:1fr; gap:44px; }
  .product__art img.pmedia,
  .product__art video.pmedia{ max-height:260px; }
  .list-lined li{ grid-template-columns:1fr; gap:8px; }
  .spec{ grid-template-columns:1fr; }
  .piece__art svg{ width:60%; }
  .piece__art img.pmedia,
  .piece__art video.pmedia{ max-height:380px; }
  .media-scroll__media{ max-height:380px; }
  .detail-media{ gap:14px; }
  .footer__grid{ grid-template-columns:1fr; gap:40px; }
  .footer__bottom{ flex-direction:column; align-items:flex-start; }
  .store-card__row{ grid-template-columns:1fr; gap:2px; }
  .store-card__row dt{ font-size:11px; letter-spacing:.24em; }
  .contact-line{ justify-content:center; }
}

/* ---------- 12 Product media（真实图片 / 视频） --------------------------- */

.pmedia{
  display:block;
  width:100%;
  height:auto;
  object-fit:contain;
}

/* 首页与分类卡片里的产品图：1:1 容器，按上传图填充裁切 */
.product__art img.pmedia,
.product__art video.pmedia{
  width:100%;
  height:100%;
  max-height:none;
  margin:0;
  object-fit:cover;
}

/* 分类页详情里的产品大图 */
.piece__art img.pmedia{
  width:100%;
  max-height:560px;
}
.piece__art video.pmedia{
  width:100%;
  max-height:560px;
  background:#111;
}

/* 主图组 —— 多图 / 视频横向滚动展示 */
.media-scroll{ position:relative; width:100%; }
.media-scroll__track{
  display:flex;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.media-scroll__track::-webkit-scrollbar{ display:none; }
.media-scroll__slide{
  flex:0 0 100%;
  min-width:0;
  scroll-snap-align:center;
  display:flex; align-items:center; justify-content:center;
}
.media-scroll__media{
  width:100%;
  max-height:560px;
  object-fit:contain;
}
.media-scroll__dots{
  display:flex; justify-content:center; gap:8px;
  padding:16px 0 2px;
}
.media-scroll__dots i{
  width:5px; height:5px;
  border-radius:50%;
  background:var(--line);
  transition:background .4s var(--ease), transform .4s var(--ease);
}
.media-scroll__dots i.is-on{
  background:var(--cinnabar);
  transform:scale(1.35);
}

/* 产品详情页媒体 —— 电商详情页比例（3:4），无缝纵向铺陈 */
.piece__detail{
  margin-top:clamp(40px,5vw,64px);
}
.detail-media{
  display:grid; gap:0;
}
.detail-media__item{
  margin:0 auto;
  width:100%;
  max-width:820px;
  aspect-ratio:3/4;
  display:flex; align-items:center; justify-content:center;
  background:var(--paper-2);
  overflow:hidden;
}
.detail-media__media{
  width:100%; height:100%;
  object-fit:contain;
  display:block;
}
.detail-media__item video{
  background:#111;
}

/* ---------- 13 产品独立详情页（电商式） ----------------------------------- */

.pd-head{
  padding:clamp(128px,16vw,178px) 0 0;
}
.pd-crumb{
  display:flex; align-items:center; gap:12px; flex-wrap:wrap;
  font-size:12.5px; letter-spacing:.14em;
  color:var(--ink-3);
}
.pd-crumb a{
  color:var(--ink-3);
  transition:color .45s var(--ease);
}
.pd-crumb a:hover{ color:var(--ink); }
.pd-crumb em{
  font-style:normal;
  color:var(--ink-2);
  white-space:nowrap;
  overflow:hidden; text-overflow:ellipsis;
  max-width:52vw;
}

.pd{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:clamp(38px,5.4vw,88px);
  align-items:start;
}

/* 左：主图轮播 */
.pd__media{
  position:relative;
  background:var(--paper-2);
  overflow:hidden;
}
.pd__media .media-scroll__media{
  width:100%;
  max-height:640px;
  object-fit:contain;
}
.pd__media > svg,
.pd__media > .pmedia{
  width:100%;
  max-height:640px;
  object-fit:contain;
}

/* 右：信息栏 */
.pd__info{
  position:sticky; top:110px;
  padding:clamp(6px,1vw,16px) 0;
}
.pd__badge{
  font-size:11px; letter-spacing:.28em;
  color:var(--cinnabar);
  margin-bottom:14px;
}
.pd__name{
  margin-top:14px;
  font-size:var(--fs-h2);
  font-weight:400;
  letter-spacing:.1em; line-height:1.55;
}
.pd__sub{
  margin-top:20px;
  font-size:14.5px; line-height:2.15;
  color:var(--ink-2);
}
.pd__price{
  margin-top:26px;
  font-family:var(--font-latin);
  font-size:clamp(26px,3vw,34px);
  letter-spacing:.05em;
  padding-bottom:22px;
  border-bottom:1px solid var(--line-soft);
}
.pd__tagline{
  margin-top:22px;
  font-size:14px; line-height:2.1;
  color:var(--ink-2);
}
.pd__cta{
  display:flex; flex-wrap:wrap;
  gap:14px;
  margin-top:clamp(30px,3.6vw,44px);
}
.pd__hint{
  margin-top:22px;
  font-size:12px; letter-spacing:.16em;
  color:var(--ink-3);
}

/* 规格参数在详情页里放宽 */
.pd-specs{ max-width:860px; }

@media (max-width:820px){
  .pd{ grid-template-columns:1fr; gap:clamp(30px,6vw,44px); }
  .pd__info{ position:static; }
  .pd__media .media-scroll__media{ max-height:440px; }
  .pd__media > svg,
  .pd__media > .pmedia{ max-height:440px; }
  .pd-head{ padding-top:110px; }
}