@charset "UTF-8";
/* =========================================================
   上海彦序服饰有限公司 — 官网样式
   设计语言参考 Hermès：大留白 / 衬线字 / 细线 / 克制配色
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root {
  /* 色彩 */
  --ivory:      #FDFBF7;
  --paper:      #FFFFFF;
  --sand:       #F5F1EA;
  --ink:        #16130F;
  --ink-soft:   #4A443C;
  --muted:      #8B8175;
  --line:       #E3DCD1;
  --line-soft:  #EFEAE2;
  --accent:     #B8622A;   /* 赭橙 —— 品牌主色 */
  --accent-dp:  #8C4A16;
  --accent-lt:  #E8D5C4;
  --night:      #1C1917;

  /* 字体 */
  --serif: "Cormorant Garamond", "Times New Roman", Georgia, "Noto Serif SC",
           "Source Han Serif SC", "Songti SC", STSong, SimSun, serif;
  --sans:  "Helvetica Neue", Helvetica, Arial, "PingFang SC",
           "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  /* 尺度 */
  --maxw:  1360px;
  --gut:   clamp(20px, 5vw, 64px);
  --sec:   clamp(72px, 11vw, 148px);
  --ease:  cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .02em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  margin: 0;
  line-height: 1.25;
  letter-spacing: .04em;
}
p { margin: 0 0 1.2em; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- 3. 通用排版件 ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gut); }
.wrap-narrow { max-width: 880px; }

.eyebrow {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 22px;
  display: flex; align-items: center; gap: 14px;
}
.eyebrow::after { content:""; flex: 0 0 46px; height: 1px; background: var(--accent); opacity: .55; }
.eyebrow.center { justify-content: center; }
.eyebrow.center::before { content:""; flex: 0 0 46px; height: 1px; background: var(--accent); opacity: .55; }

.h-display { font-size: clamp(34px, 5.4vw, 68px); line-height: 1.12; letter-spacing: .015em; }
.h-sec     { font-size: clamp(27px, 3.3vw, 44px); }
.h-card    { font-size: clamp(19px, 1.7vw, 25px); }
.lede      { font-family: var(--serif); font-size: clamp(17px, 1.5vw, 22px); line-height: 1.85; color: var(--ink-soft); }
.body-text { color: var(--ink-soft); font-size: 15.5px; line-height: 2.0; }

.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* 按钮 */
.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  padding: 17px 40px;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  transition: background .45s var(--ease), color .45s var(--ease), border-color .45s var(--ease);
}
.btn:hover { background: var(--ink); color: #fff; }
.btn-light { border-color: rgba(255,255,255,.75); color: #fff; }
.btn-light:hover { background: #fff; color: var(--ink); }
.btn-accent { border-color: var(--accent); color: var(--accent); }
.btn-accent:hover { background: var(--accent); color: #fff; }

/* 链接下划线动画 */
.ulink { position: relative; display: inline-block; padding-bottom: 3px; }
.ulink::after {
  content:""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: left;
  transition: transform .45s var(--ease);
}
.ulink:hover::after, .is-active .ulink::after { transform: scaleX(1); }

/* ---------- 4. 页头 ---------- */
.topbar {
  background: var(--ink);
  color: rgba(255,255,255,.82);
  font-size: 11.5px;
  letter-spacing: .16em;
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; height: 38px; gap: 20px; }
.topbar span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-right { display: flex; gap: 22px; flex: 0 0 auto; }
.topbar a:hover { color: #fff; }

.hd {
  position: sticky; top: 0; z-index: 90;
  background: rgba(253,251,247,.94);
  backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--line-soft);
  transition: box-shadow .4s var(--ease);
}
.hd.stuck { box-shadow: 0 1px 24px rgba(22,19,15,.07); }
.hd .wrap {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  height: 96px; gap: 24px;
  transition: height .4s var(--ease);
}
.hd.stuck .wrap { height: 74px; }

.nav-left  { display: flex; gap: 34px; justify-content: flex-end; }
.nav-right { display: flex; gap: 34px; justify-content: flex-start; }
.nav-link {
  font-size: 13px; letter-spacing: .16em; color: var(--ink-soft);
  position: relative; padding: 6px 0; white-space: nowrap;
  transition: color .35s var(--ease);
}
.nav-link::after {
  content:""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform .45s var(--ease);
}
.nav-link:hover, .nav-link.is-active { color: var(--accent); }
.nav-link:hover::after, .nav-link.is-active::after { transform: scaleX(1); }

.logo { text-align: center; display: block; }
.logo-mark {
  font-family: var(--serif);
  font-size: 27px; letter-spacing: .3em; text-indent: .3em;
  line-height: 1; color: var(--ink);
}
.logo-sub {
  font-size: 9.5px; letter-spacing: .42em; text-indent: .42em;
  color: var(--muted); margin-top: 8px; text-transform: uppercase;
}

.burger {
  display: none; width: 40px; height: 40px; border: 0; background: none;
  position: relative; margin-left: auto;
}
.burger i {
  position: absolute; left: 8px; right: 8px; height: 1px; background: var(--ink);
  transition: transform .4s var(--ease), opacity .3s;
}
.burger i:nth-child(1) { top: 15px; }
.burger i:nth-child(2) { top: 24px; }
.burger.on i:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.burger.on i:nth-child(2) { transform: translateY(-4.5px) rotate(-45deg); }

/* 移动端抽屉 */
.drawer {
  position: fixed; inset: 96px 0 auto; z-index: 89;
  background: var(--ivory); border-bottom: 1px solid var(--line);
  display: none; padding: 20px var(--gut) 34px;
}
.drawer.on { display: block; }
.drawer a {
  display: block; font-family: var(--serif); font-size: 21px;
  padding: 14px 0; border-bottom: 1px solid var(--line-soft); color: var(--ink);
}
.drawer a.is-active { color: var(--accent); }

/* ---------- 5. 主视觉 ---------- */
.hero { position: relative; height: clamp(560px, 92vh, 940px); overflow: hidden; background: var(--night); }
.hero-media { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero::after {
  content:""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,16,12,.46) 0%, rgba(20,16,12,.26) 42%, rgba(20,16,12,.62) 100%);
}
.hero-inner {
  position: relative; z-index: 2; height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; color: #fff; padding: 0 var(--gut);
}
.hero .eyebrow { color: #fff; opacity: .85; }
.hero .eyebrow::after, .hero .eyebrow::before { background: #fff; }
.hero h1 { color: #fff; text-shadow: 0 2px 30px rgba(0,0,0,.28); margin-bottom: 26px; }
.hero-sub {
  font-family: var(--serif); font-size: clamp(15px, 1.5vw, 21px);
  max-width: 720px; color: rgba(255,255,255,.9); line-height: 1.9; margin-bottom: 42px;
}
.hero-cta { display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; }

/* 内页页头 */
.phead {
  position: relative; height: clamp(320px, 46vh, 500px);
  display: flex; align-items: flex-end; overflow: hidden; background: var(--night);
}
.phead img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.phead::after {
  content:""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,16,12,.30), rgba(20,16,12,.66));
}
.phead .wrap { position: relative; z-index: 2; padding-bottom: clamp(40px, 6vw, 72px); color: #fff; }
.phead h1 { color: #fff; }
.phead .eyebrow { color: #fff; opacity: .8; margin-bottom: 16px; }
.phead .eyebrow::after { background: #fff; }
.crumb { font-size: 11.5px; letter-spacing: .18em; color: rgba(255,255,255,.75); margin-top: 20px; }
.crumb a:hover { color: #fff; }

/* ---------- 6. 区块骨架 ---------- */
.sec { padding: var(--sec) 0; }
.sec-tight { padding: clamp(48px, 7vw, 92px) 0; }
.sec-sand { background: var(--sand); }
.sec-night { background: var(--night); color: #fff; }
.sec-night .body-text, .sec-night .lede { color: rgba(255,255,255,.74); }
.sec-night .eyebrow { color: var(--accent-lt); }
.sec-night h2, .sec-night h3 { color: #fff; }

.sec-head { text-align: center; max-width: 780px; margin: 0 auto clamp(48px, 6vw, 84px); }
.sec-head .h-sec { margin-bottom: 22px; }

/* ---------- 7. 数据条 ---------- */
.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, 4vw, 52px) 18px; text-align: center; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat b {
  display: block; font-family: var(--serif); font-weight: 400;
  font-size: clamp(30px, 3.6vw, 50px); line-height: 1; color: var(--ink);
  letter-spacing: .01em;
}
.stat b i { font-style: normal; font-size: .5em; margin-left: 3px; color: var(--accent); }
.stat span { display: block; margin-top: 14px; font-size: 12px; letter-spacing: .2em; color: var(--muted); }

/* ---------- 8. 图文分栏 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(36px, 6vw, 96px); align-items: center; }
.split.flip .split-media { order: 2; }
.split-media { position: relative; overflow: hidden; }
.split-media img { width: 100%; aspect-ratio: 4/5; object-fit: cover; transition: transform 1.2s var(--ease); }
.split-media:hover img { transform: scale(1.045); }
.split-media.tall img { aspect-ratio: 3/4; }
.split-media.wide img { aspect-ratio: 16/10; }
.split-media figcaption {
  font-size: 11.5px; letter-spacing: .16em; color: var(--muted); margin-top: 14px;
}
.split-body .h-sec { margin-bottom: 26px; }

/* 服务清单 */
.checklist { margin-top: 30px; border-top: 1px solid var(--line); }
.checklist li {
  display: flex; gap: 16px; align-items: baseline;
  padding: 15px 0; border-bottom: 1px solid var(--line-soft);
  font-size: 15px; color: var(--ink-soft);
}
.checklist li::before {
  content:""; flex: 0 0 16px; height: 1px; background: var(--accent);
  transform: translateY(-6px);
}

/* ---------- 9. 卡片网格 ---------- */
.grid { display: grid; gap: clamp(24px, 3vw, 40px); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card { display: block; }
.card-media { position: relative; overflow: hidden; background: var(--sand); }
.card-media img {
  width: 100%; aspect-ratio: 4/5; object-fit: cover;
  transition: transform 1.1s var(--ease), filter 1.1s var(--ease);
}
.card:hover .card-media img { transform: scale(1.06); }
.card-media.wide img { aspect-ratio: 3/2; }
.card-media.sq img { aspect-ratio: 1/1; }
.card-media .tag {
  position: absolute; left: 0; bottom: 0; z-index: 2;
  background: var(--ivory); color: var(--ink);
  font-size: 10.5px; letter-spacing: .22em; padding: 9px 16px;
}
.card-body { padding: 22px 0 0; }
.card-body h3 { margin-bottom: 10px; transition: color .35s var(--ease); }
.card:hover .card-body h3 { color: var(--accent); }
.card-body p { font-size: 14.5px; color: var(--muted); margin: 0; line-height: 1.9; }

/* 品类卡（文字覆层） */
.pcard { position: relative; overflow: hidden; display: block; background: var(--night); }
.pcard img {
  width: 100%; aspect-ratio: 3/4; object-fit: cover;
  transition: transform 1.2s var(--ease), opacity .8s var(--ease);
}
.pcard::after {
  content:""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,16,12,.05) 40%, rgba(20,16,12,.72) 100%);
  transition: opacity .6s var(--ease);
}
.pcard:hover img { transform: scale(1.07); }
.pcap {
  position: absolute; z-index: 3; left: 0; right: 0; bottom: 0;
  padding: clamp(22px, 2.6vw, 36px); color: #fff;
}
.pcap h3 { color: #fff; font-size: clamp(21px, 2vw, 28px); margin-bottom: 8px; }
.pcap span { font-size: 11.5px; letter-spacing: .2em; opacity: .82; }

/* ---------- 10. 品牌墙 ---------- */
.brands {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
.brand {
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: clamp(26px, 3vw, 42px) 16px; text-align: center;
  transition: background .45s var(--ease);
}
.brand:hover { background: #fff; }
.brand .zh {
  font-family: var(--serif); font-size: clamp(15px, 1.4vw, 19px);
  letter-spacing: .12em; display: block;
}
.brand .en {
  font-size: 9.5px; letter-spacing: .26em; color: var(--muted);
  text-transform: uppercase; margin-top: 8px; display: block;
}

/* ---------- 11. 荣誉 ---------- */
.honor {
  border: 1px solid var(--line); padding: clamp(28px, 3vw, 42px);
  background: #fff; transition: border-color .45s var(--ease), transform .45s var(--ease);
  height: 100%;
}
.honor:hover { border-color: var(--accent); transform: translateY(-4px); }
.honor .yr {
  font-size: 10.5px; letter-spacing: .24em; color: var(--accent); display: block; margin-bottom: 16px;
}
.honor h4 { font-size: 18px; margin-bottom: 12px; line-height: 1.6; }
.honor p { font-size: 13.5px; color: var(--muted); margin: 0; line-height: 1.9; }

/* ---------- 12. 新闻 ---------- */
.news-item {
  display: grid; grid-template-columns: 300px 1fr; gap: clamp(24px, 3vw, 48px);
  padding: clamp(26px, 3vw, 40px) 0; border-bottom: 1px solid var(--line);
  align-items: center; transition: background .4s var(--ease);
}
.news-item:hover { background: #fff; }
.news-item .card-media img { aspect-ratio: 16/10; }
.news-meta {
  display: flex; gap: 18px; align-items: center;
  font-size: 11px; letter-spacing: .18em; color: var(--muted); margin-bottom: 14px;
}
.news-meta .cat { color: var(--accent); }
.news-item h3 { font-size: clamp(19px, 1.9vw, 26px); margin-bottom: 12px; transition: color .35s; }
.news-item:hover h3 { color: var(--accent); }
.news-item p { font-size: 14.5px; color: var(--muted); margin: 0; }

/* 新闻筛选 */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: clamp(36px, 4vw, 56px); }
.filters button {
  border: 1px solid var(--line); background: transparent; color: var(--ink-soft);
  font-size: 12px; letter-spacing: .16em; padding: 11px 24px;
  transition: all .4s var(--ease);
}
.filters button:hover { border-color: var(--accent); color: var(--accent); }
.filters button.on { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ---------- 13. 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border-top: 1px solid var(--line); }
.step { padding: clamp(26px, 3vw, 40px) 22px; border-right: 1px solid var(--line); position: relative; }
.step:last-child { border-right: 0; }
.step i {
  font-style: normal; font-family: var(--serif); font-size: 34px;
  color: var(--accent-lt); display: block; margin-bottom: 16px; line-height: 1;
}
.step h4 { font-size: 17px; margin-bottom: 10px; }
.step p { font-size: 13.5px; color: var(--muted); line-height: 1.85; margin: 0; }

/* ---------- 14. 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 96px); }
.info-row { padding: 22px 0; border-bottom: 1px solid var(--line-soft); display: grid; grid-template-columns: 120px 1fr; gap: 18px; }
.info-row dt { font-size: 11.5px; letter-spacing: .2em; color: var(--muted); }
.info-row dd { margin: 0; font-size: 15.5px; color: var(--ink); line-height: 1.8; }
.info-row dd small { display: block; font-size: 13px; color: var(--muted); margin-top: 4px; }

.form-row { margin-bottom: 26px; }
.form-row label { display: block; font-size: 11.5px; letter-spacing: .2em; color: var(--muted); margin-bottom: 10px; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%; border: 0; border-bottom: 1px solid var(--line);
  background: transparent; padding: 12px 0; font-family: var(--sans);
  font-size: 15px; color: var(--ink); outline: none;
  transition: border-color .4s var(--ease);
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus { border-color: var(--accent); }
.form-row textarea { resize: vertical; min-height: 108px; }
.form-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 18px; line-height: 1.8; }

/* ---------- 15. 画廊 ---------- */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gallery figure { margin: 0; overflow: hidden; background: var(--sand); }
.gallery img {
  width: 100%; aspect-ratio: 1/1; object-fit: cover;
  transition: transform 1.1s var(--ease);
}
.gallery figure:hover img { transform: scale(1.06); }

/* ---------- 16. 页脚 ---------- */
.ft { background: var(--ink); color: rgba(255,255,255,.68); padding: clamp(56px, 7vw, 96px) 0 0; }
.ft h5 {
  font-family: var(--sans); font-size: 11px; letter-spacing: .24em;
  color: #fff; text-transform: uppercase; margin: 0 0 22px; font-weight: 400;
}
.ft a { color: rgba(255,255,255,.68); transition: color .35s var(--ease); }
.ft a:hover { color: #fff; }
.ft-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: clamp(28px, 4vw, 60px); padding-bottom: clamp(40px, 5vw, 64px); }
.ft-brand .logo-mark { color: #fff; }
.ft-brand .logo-sub { color: rgba(255,255,255,.5); }
.ft-brand p { font-size: 13.5px; line-height: 1.95; margin-top: 22px; max-width: 340px; }
.ft-list li { margin-bottom: 12px; font-size: 13.5px; }
.ft-bottom {
  border-top: 1px solid rgba(255,255,255,.14); padding: 24px 0 30px;
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  font-size: 12px; color: rgba(255,255,255,.5);
}

/* ---------- 17. 滚动动效 ---------- */
.rv { opacity: 0; transform: translateY(26px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.rv.in { opacity: 1; transform: none; }
.rv-d1 { transition-delay: .1s; } .rv-d2 { transition-delay: .2s; }
.rv-d3 { transition-delay: .3s; } .rv-d4 { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1080px) {
  .hd .wrap { grid-template-columns: auto 1fr auto; height: 78px; }
  .nav-left, .nav-right { display: none; }
  .logo { text-align: left; }
  .logo-mark { font-size: 21px; }
  .burger { display: block; }
  .hero { height: clamp(520px, 78vh, 720px); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .split.flip .split-media { order: 0; }
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .g3 { grid-template-columns: repeat(2, 1fr); }
  .brands { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step { border-bottom: 1px solid var(--line); }
  .step:nth-child(2n) { border-right: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .ft-top { grid-template-columns: 1fr 1fr; }
  .news-item { grid-template-columns: 220px 1fr; }
}

@media (max-width: 720px) {
  body { font-size: 15px; }
  .topbar-right { gap: 14px; }
  .topbar span:first-child { display: none; }
  .g2, .g3, .g4, .gallery { grid-template-columns: 1fr; }
  .brands { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line); }
  .stat:last-child { border-bottom: 0; }
  .steps { grid-template-columns: 1fr; }
  .step { border-right: 0; }
  .news-item { grid-template-columns: 1fr; }
  .news-item .card-media { max-width: 100%; }
  .form-2 { grid-template-columns: 1fr; }
  .ft-top { grid-template-columns: 1fr; }
  .info-row { grid-template-columns: 1fr; gap: 6px; }
  .hero-cta .btn { width: 100%; text-align: center; }
}

/* ---------- 19. 打印 / 可访问性 ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }