/* 洛赫 LOWHEARTH 官网 · 品牌样式
   静奢 Quiet Luxury：大量留白、克制、高级感
   配色：0B0B0C 黑 / EFEAE3 米白 / C69B6D 铜棕 */

:root {
  --black: #0B0B0C;
  --ink: #1a1a1b;
  --cream: #EFEAE3;
  --cream-light: #F7F4EF;
  --copper: #C69B6D;
  --copper-dark: #A87F55;
  --grey: #6b6b6f;
  --white: #ffffff;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  color: var(--ink);
  background: var(--cream-light);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.en {
  font-family: "Montserrat", "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0.06em;
}

/* 顶部导航 */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  background: rgba(11, 11, 12, 0.85);
  backdrop-filter: blur(12px);
  color: var(--cream);
}
.nav .brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.12em;
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav .brand .zh { font-weight: 600; }
.nav .brand .divider { color: var(--copper); font-weight: 300; }
.nav .links { display: flex; gap: 32px; }
.nav .links a {
  color: var(--cream);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.04em;
  opacity: 0.85;
  transition: opacity 0.2s, color 0.2s;
}
.nav .links a:hover { opacity: 1; color: var(--copper); }

/* Hero */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--white);
  overflow: hidden;
}
.hero img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.55);
}
.hero .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(11,11,12,0.35), rgba(11,11,12,0.75));
}
.hero .content {
  position: relative;
  z-index: 2;
  padding: 0 24px;
}
.hero .kicker {
  font-size: 14px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 300;
  letter-spacing: 0.06em;
  line-height: 1.2;
  margin-bottom: 24px;
}
.hero .sub {
  font-size: 18px;
  font-weight: 300;
  opacity: 0.9;
  max-width: 640px;
  margin: 0 auto 40px;
}
.btn {
  display: inline-block;
  padding: 16px 44px;
  border: 1px solid var(--copper);
  color: var(--white);
  text-decoration: none;
  font-size: 15px;
  letter-spacing: 0.1em;
  transition: background 0.25s, color 0.25s;
}
.btn:hover { background: var(--copper); color: var(--black); }
.btn.solid { background: var(--copper); color: var(--black); }
.btn.solid:hover { background: var(--copper-dark); border-color: var(--copper-dark); }

/* 通用区块 */
.section { padding: 96px 48px; max-width: 1200px; margin: 0 auto; }
.section.tight { padding: 72px 48px; }
.section.dark { background: var(--black); color: var(--cream); max-width: none; }
.section.dark .inner { max-width: 1200px; margin: 0 auto; }

.section-title {
  font-size: 13px;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 16px;
}
.section h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 300;
  letter-spacing: 0.03em;
  margin-bottom: 24px;
}
.section .lead {
  font-size: 17px;
  color: var(--grey);
  max-width: 720px;
  font-weight: 300;
}
.section.dark .lead { color: #a8a8ad; }

/* 品牌定位 */
.positioning {
  text-align: center;
  background: var(--white);
}
.positioning .big-line {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 300;
  letter-spacing: 0.04em;
  line-height: 1.6;
  max-width: 900px;
  margin: 0 auto;
}
.positioning .big-line em {
  font-style: normal;
  color: var(--copper);
}

/* 三柱优势 */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  text-align: center;
}
.pillars .num {
  font-size: 42px;
  font-weight: 200;
  color: var(--copper);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.pillars h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
.pillars p { font-size: 15px; color: var(--grey); font-weight: 300; }

/* 产品入口 */
.product-entry {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.product-entry img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  box-shadow: 0 30px 60px rgba(0,0,0,0.12);
}
.product-entry .info h3 {
  font-size: 30px;
  font-weight: 400;
  margin-bottom: 8px;
}
.product-entry .info .model {
  color: var(--copper);
  letter-spacing: 0.15em;
  font-size: 14px;
  margin-bottom: 20px;
}
.product-entry .info p {
  color: var(--grey);
  font-weight: 300;
  margin-bottom: 28px;
}
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
  margin-bottom: 28px;
  font-size: 14px;
}
.spec-grid .k { color: var(--grey); }
.spec-grid .v { text-align: right; font-weight: 600; }

/* 生活方式 */
.lifestyle { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.lifestyle .card { position: relative; overflow: hidden; }
.lifestyle .card img {
  width: 100%; height: 480px; object-fit: cover;
  transition: transform 0.6s ease;
}
.lifestyle .card:hover img { transform: scale(1.04); }
.lifestyle .card .cap {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 48px 28px 24px;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  color: var(--white);
  font-size: 16px;
  letter-spacing: 0.06em;
}

/* 双入口 */
.dual-entry { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.dual-entry a {
  display: block;
  padding: 48px;
  border: 1px solid rgba(198,155,109,0.35);
  text-decoration: none;
  color: var(--cream);
  transition: background 0.25s;
}
.dual-entry a:hover { background: rgba(198,155,109,0.08); }
.dual-entry .tag {
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 12px;
}
.dual-entry h3 { font-size: 24px; font-weight: 300; margin-bottom: 12px; }
.dual-entry p { font-size: 14px; color: #a8a8ad; font-weight: 300; }

/* 页脚 */
.footer {
  background: var(--black);
  color: var(--cream);
  padding: 64px 48px;
}
.footer .inner { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 24px; }
.footer .brand { font-size: 18px; letter-spacing: 0.12em; font-weight: 700; }
.footer .slogan { font-size: 13px; color: #8a8a8f; letter-spacing: 0.05em; }
.footer .copy { font-size: 12px; color: #5a5a5f; }

/* 产品详情页 */
.detail-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 140px 48px 80px;
  max-width: 1200px;
  margin: 0 auto;
}
.detail-hero img {
  width: 100%;
  background: var(--white);
  box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}
.detail-hero .title h1 { font-size: 40px; font-weight: 300; }
.detail-hero .title .model { color: var(--copper); letter-spacing: 0.15em; margin: 8px 0 20px; }

table.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
table.spec th, table.spec td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid #e6e0d8;
}
table.spec th { width: 40%; color: var(--grey); font-weight: 400; }
table.spec td { font-weight: 600; }

/* 图文模块 */
.media-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.media-row img { width: 100%; box-shadow: 0 20px 40px rgba(0,0,0,0.08); }
.media-row.flip { direction: rtl; }
.media-row.flip > * { direction: ltr; }

/* 响应式 */
@media (max-width: 860px) {
  .nav { padding: 14px 20px; }
  .nav .links { gap: 16px; }
  .section, .section.tight { padding: 64px 24px; }
  .pillars { grid-template-columns: 1fr; gap: 40px; }
  .product-entry, .lifestyle, .dual-entry, .detail-hero, .media-row { grid-template-columns: 1fr; }
  .detail-hero { padding: 120px 24px 60px; }
}

/* 真标（取自用户矢量源文件，非手绘） */
.nav .brand { text-decoration: none; }
.nav .brand img { height: 22px; width: auto; display: block; }
.footer .brand img.ftlogo { height: 26px; width: auto; display: block; margin-bottom: 8px; }
@media (max-width: 640px) {
  .nav { padding: 12px 16px; }
  .nav .brand img { height: 17px; }
  .nav .links { gap: 12px; }
  .nav .links a { font-size: 12px; letter-spacing: 0; white-space: nowrap; }
  .footer .brand img.ftlogo { height: 20px; }
}
@media (max-width: 380px) {
  .nav .links { gap: 9px; }
  .nav .links a { font-size: 11px; }
}