/* ===== Lamy Cashmere — 基础样式 ===== */
:root {
  --paper: #f7f3ec;
  --paper-2: #efe8dc;
  --ink: #17140f;
  --ink-soft: #3d372e;
  --muted: #7a7164;
  --gold: #b8914f;
  --gold-soft: #d9c3a0;
  --line: rgba(23, 20, 15, 0.12);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia,
           "Songti SC", "Noto Serif SC", "Source Han Serif SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue",
          "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3 { margin: 0; font-weight: 400; font-family: var(--serif); line-height: 1.15; letter-spacing: 0; }

p { margin: 0; }

.container { width: min(1240px, 100% - 2 * clamp(20px, 5vw, 72px)); margin-inline: auto; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  padding: 20px clamp(20px, 5vw, 56px);
  transition: background 0.4s var(--ease), padding 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.nav.is-solid {
  background: rgba(247, 243, 236, 0.92);
  backdrop-filter: blur(12px);
  padding-block: 14px;
  box-shadow: 0 1px 0 var(--line);
}
.nav__brand { display: flex; align-items: center; gap: 10px; }
.nav__brand img { width: 34px; height: 34px; }
.nav__brand span {
  font-family: var(--serif); font-size: 19px; letter-spacing: 0.04em; color: #fff;
  transition: color 0.4s var(--ease);
}
.nav.is-solid .nav__brand span { color: var(--ink); }
.nav__links { display: flex; align-items: center; gap: clamp(16px, 2.4vw, 34px); }
.nav__links a {
  font-size: 13.5px; letter-spacing: 0.08em; color: rgba(255, 255, 255, 0.86);
  transition: color 0.3s var(--ease);
}
.nav.is-solid .nav__links a { color: var(--ink-soft); }
.nav__links a:hover { color: var(--gold); }
.nav__lang {
  border: 1px solid rgba(255, 255, 255, 0.45); border-radius: 999px;
  padding: 4px 12px; font-size: 12px; letter-spacing: 0.12em;
}
.nav.is-solid .nav__lang { border-color: var(--line); }
.nav__toggle { display: none; }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  background: #14110d;
  color: #fff;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: -20%;
  background: radial-gradient(60% 50% at 20% 30%, rgba(184, 145, 79, 0.16), transparent 70%);
  pointer-events: none;
}
.hero__grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 5vw, 80px);
  align-items: center;
  padding-block: clamp(120px, 16vh, 170px) clamp(60px, 8vh, 90px);
}
.hero__eyebrow {
  font-size: 11.5px; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--gold-soft); margin-bottom: 26px;
}
.hero h1 {
  font-size: clamp(2.5rem, 5.6vw, 5rem);
  line-height: 1.06; letter-spacing: -0.01em;
}
.hero p {
  margin-top: 26px; max-width: 44ch;
  font-size: clamp(15px, 1.4vw, 17px); line-height: 1.85;
  color: rgba(255, 255, 255, 0.7);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.hero__media {
  position: relative;
  height: min(70vh, 720px);
  overflow: hidden;
  animation: heroIn 1.4s var(--ease) both;
}
.hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: 52% 45%; }
.hero__media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20, 17, 13, 0.05), rgba(20, 17, 13, 0.45)),
              rgba(184, 145, 79, 0.1);
  mix-blend-mode: multiply;
}
.hero__cap {
  position: absolute; right: 0; bottom: 0; z-index: 2;
  padding: 10px 16px; background: rgba(20, 17, 13, 0.55);
  font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase; color: rgba(255,255,255,.75);
  backdrop-filter: blur(6px);
}
@keyframes heroIn { from { opacity: 0; transform: translateY(24px) scale(1.02); } to { opacity: 1; transform: none; } }

html.is-fullshot .hero { min-height: 0; }
html.no-anim .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
html.no-anim .hero__media { animation: none !important; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 28px; border-radius: 2px;
  font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase;
  border: 1px solid transparent;
  transition: all 0.35s var(--ease);
}
.btn--solid { background: var(--gold); color: #17140f; }
.btn--solid:hover { background: #cda969; }
.btn--ghost { border-color: rgba(255, 255, 255, 0.55); color: #fff; }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.12); }
.btn--dark { border-color: var(--ink); color: var(--ink); }
.btn--dark:hover { background: var(--ink); color: var(--paper); }

/* ---------- 通用版块 ---------- */
.section { padding-block: clamp(72px, 11vw, 140px); }
.section--tight { padding-block: clamp(56px, 7vw, 96px); }
.section--paper2 { background: var(--paper-2); }
.section--dark { background: #17140f; color: var(--paper); }

.eyebrow {
  display: block; font-size: 11.5px; letter-spacing: 0.26em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 18px;
}
.section--dark .eyebrow { color: var(--gold-soft); }

.h2 { font-size: clamp(1.9rem, 3.6vw, 3.1rem); max-width: 22ch; }
.lede { margin-top: 22px; max-width: 58ch; color: var(--muted); font-size: 15.5px; }
.section--dark .lede { color: rgba(247, 243, 236, 0.68); }

.head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 28px; }

/* ---------- 数字 ---------- */
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 4vw, 56px); }
.fact { border-top: 1px solid var(--line); padding-top: 22px; }
.fact b { display: block; font-family: var(--serif); font-weight: 400; font-size: clamp(1.6rem, 3vw, 2.5rem); line-height: 1.1; }
.fact span { display: block; margin-top: 8px; font-size: 13px; color: var(--muted); letter-spacing: 0.04em; }

/* ---------- 产品卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(18px, 3vw, 40px); }
.card { position: relative; overflow: hidden; background: var(--paper-2); }
.card__media { aspect-ratio: 4 / 3; overflow: hidden; }
.card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.9s var(--ease); }
.card:hover .card__media img { transform: scale(1.045); }
.card__body { padding: 24px 26px 28px; display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; }
.card h3 { font-size: clamp(1.15rem, 1.8vw, 1.45rem); }
.card p { margin-top: 8px; font-size: 13.5px; color: var(--muted); max-width: 34ch; }
.card__idx { font-family: var(--serif); font-size: 13px; color: var(--gold); letter-spacing: 0.1em; padding-top: 4px; }

/* ---------- 图文分栏 ---------- */
.split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(28px, 6vw, 90px); align-items: center; }
.split--rev .split__media { order: 2; }
.split__media { position: relative; }
.split__media img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.split__media figcaption {
  position: absolute; left: 0; bottom: 0; background: var(--paper);
  padding: 10px 18px; font-size: 11.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted);
}

/* ---------- 工厂条 ---------- */
.strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; background: var(--line); }
.strip figure { margin: 0; position: relative; overflow: hidden; background: #ddd; }
.strip img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; filter: saturate(0.85); transition: transform 0.9s var(--ease), filter 0.6s var(--ease); }
.strip figure:hover img { transform: scale(1.04); filter: saturate(1); }
.strip figcaption {
  position: absolute; inset: auto 0 0; padding: 14px 16px;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: #fff;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.62));
}

/* ---------- 优势列表 ---------- */
.whys { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 clamp(24px, 5vw, 80px); }
.why { padding: 26px 0; border-top: 1px solid rgba(247, 243, 236, 0.16); }
.why h3 { font-size: 1.3rem; }
.why p { margin-top: 10px; color: rgba(247, 243, 236, 0.62); font-size: 14px; max-width: 42ch; }

/* ---------- CTA ---------- */
.cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 32px; }
.cta h2 { font-size: clamp(1.8rem, 3.4vw, 2.9rem); max-width: 18ch; }

/* ---------- 页脚 ---------- */
.footer { background: #17140f; color: rgba(247, 243, 236, 0.62); padding-block: 64px 36px; }
.footer__top { display: grid; grid-template-columns: 1.2fr 0.8fr 0.8fr; gap: 40px; }
.footer__brand img { width: 40px; height: 40px; margin-bottom: 16px; }
.footer__brand b { font-family: var(--serif); font-weight: 400; font-size: 20px; color: var(--paper); letter-spacing: 0.04em; display: block; }
.footer p { font-size: 13.5px; line-height: 1.9; }
.footer h4 { margin: 0 0 14px; font-size: 11.5px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold-soft); font-weight: 500; }
.footer a:hover { color: var(--paper); }
.footer__bottom {
  margin-top: 56px; padding-top: 22px; border-top: 1px solid rgba(247, 243, 236, 0.12);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 12px; letter-spacing: 0.06em;
}

/* ---------- 内页头 ---------- */
.page-head { padding-top: clamp(130px, 16vw, 190px); padding-bottom: clamp(40px, 6vw, 70px); }
.page-head h1 { font-size: clamp(2.2rem, 5vw, 4.2rem); max-width: 18ch; }
.page-head p { margin-top: 20px; max-width: 54ch; color: var(--muted); }

/* ---------- 产品详情行 ---------- */
.prow { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(24px, 5vw, 72px); align-items: center; padding-block: clamp(36px, 6vw, 72px); border-top: 1px solid var(--line); }
.prow:nth-child(even) .prow__media { order: 2; }
.prow__media img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.prow h2 { font-size: clamp(1.5rem, 2.6vw, 2.2rem); }
.prow p { margin-top: 16px; color: var(--muted); font-size: 15px; }
.specs { margin: 22px 0 26px; padding: 0; list-style: none; display: grid; gap: 10px; }
.specs li { display: flex; gap: 14px; font-size: 13.5px; color: var(--ink-soft); }
.specs li::before { content: "—"; color: var(--gold); }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 6vw, 90px); }
.field { margin-bottom: 22px; }
.field label { display: block; font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.field input, .field textarea {
  width: 100%; padding: 12px 2px; border: 0; border-bottom: 1px solid var(--line);
  background: transparent; font: inherit; font-size: 15px; color: var(--ink); outline: none;
  transition: border-color 0.3s var(--ease);
}
.field input:focus, .field textarea:focus { border-bottom-color: var(--gold); }
.field textarea { resize: vertical; min-height: 110px; }
.info-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 26px; }
.info-list dt { font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); margin-bottom: 6px; }
.info-list dd { margin: 0; font-size: 15.5px; }

/* ---------- 滚动出现 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

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

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .cards, .split, .strip, .prow, .contact-grid, .whys, .footer__top { grid-template-columns: 1fr; }
  .strip { grid-template-columns: repeat(2, 1fr); }
  .prow:nth-child(even) .prow__media { order: 0; }
  .facts { grid-template-columns: 1fr; gap: 18px; }
  .nav__links { display: none; }
  .nav__links.is-open {
    display: flex; flex-direction: column; align-items: flex-start; gap: 18px;
    position: absolute; inset: 100% 0 auto; padding: 26px clamp(20px, 5vw, 56px) 30px;
    background: var(--paper); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
  }
  .nav__links.is-open a { color: var(--ink-soft); font-size: 15px; }
  .nav__toggle {
    display: inline-flex; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; cursor: pointer;
  }
  .nav__toggle span { width: 22px; height: 1.5px; background: #fff; transition: background 0.3s var(--ease); }
  .nav.is-solid .nav__toggle span { background: var(--ink); }
  .split__media img { aspect-ratio: 4 / 3; }
  .hero__grid { grid-template-columns: 1fr; padding-block: 120px 60px; }
  .hero__media { height: 52vh; order: -1; }
  .hero h1 { font-size: clamp(2.2rem, 9vw, 3.2rem); }
}