/* =========================================================
   RESTONIC × VIBRELAX · Dual Brand Website
   ========================================================= */

:root {
  /* —— 色彩 —— */
  --ink: #1F1A14;          /* 主深棕（标题/文字） */
  --ink-soft: #3A3026;
  --ink-mute: #6B6259;     /* 段落 */
  --ink-faint: #9C9286;
  --line: #E8DCC8;         /* 浅驼分割线 */
  --paper: #F5EFE6;        /* 暖米背景 */
  --paper-deep: #EBE3D4;
  --cream: #FAF6EE;
  --gold: #B8956A;         /* 香槟金强调 (RESTONIC) */
  --gold-deep: #8C6E48;
  --gold-soft: #D9C5A6;
  --copper: #C8763E;      /* 铜色强调 (VIBRELAX) */
  --copper-deep: #A05E2C;
  --copper-soft: #E0A877;
  --green-deep: #2A3528;   /* 深绿（技术板块） */

  /* —— 字体 —— */
  --font-serif: "Noto Serif SC", "Cormorant Garamond", "Songti SC", serif;
  --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Cormorant Garamond", "Noto Serif SC", serif;

  /* —— 节奏 —— */
  --max-w: 1320px;
  --gutter: 32px;
  --radius: 4px;
  --radius-lg: 8px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--cream);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; transition: color .3s var(--ease); }
a:hover { color: var(--gold-deep); }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ========== 排版 ========== */
.section-head {
  text-align: left;
  margin-bottom: 80px;
  position: relative;
}
.section-head.center,
.section-head-light { text-align: center; }

.section-no {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
  margin-bottom: 24px;
  font-weight: 500;
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: 0.05em;
}
.section-title .title-cn {
  display: block;
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink);
}
.section-title .title-en {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(14px, 1.4vw, 18px);
  letter-spacing: 0.3em;
  color: var(--gold-deep);
  margin-top: 16px;
  font-weight: 500;
  text-transform: uppercase;
}

.section-lead {
  font-size: 17px;
  line-height: 1.9;
  color: var(--ink-mute);
  margin-top: 32px;
  max-width: 640px;
}
.section-head-light .section-lead,
.section-head.center .section-lead {
  margin-left: auto;
  margin-right: auto;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: all .4s var(--ease);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--ink);
  color: var(--cream);
}
.btn-primary:hover {
  background: var(--gold-deep);
  color: var(--cream);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -8px rgba(31, 26, 20, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}
.btn-ghost:hover {
  background: var(--ink);
  color: var(--cream);
}

.btn-full { width: 100%; justify-content: center; }

/* ========== 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: all .4s var(--ease);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(250, 246, 238, 0.92);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--cream);
  transition: color .4s var(--ease);
}
.navbar.scrolled .nav-logo { color: var(--ink); }

.nav-logo-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--cream);
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
}
.nav-logo-img {
  width: auto;
  height: 36px;
  object-fit: contain;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 18px;
  font-weight: 600;
  border: 1px solid currentColor;
  border-radius: 50%;
  color: var(--gold);
  background: rgba(0,0,0,0.05);
}
.logo-mark .logo-x {
  font-size: 11px;
  opacity: 0.5;
  margin: 0 1px;
}
.navbar.scrolled .logo-mark { background: transparent; }

.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-cn { font-family: var(--font-serif); font-weight: 600; font-size: 15px; letter-spacing: 0.06em; }
.logo-en { font-family: var(--font-display); font-style: italic; font-size: 11px; letter-spacing: 0.2em; color: var(--gold); margin-top: 2px; }

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}
.nav-link {
  position: relative;
  padding: 8px 0;
  color: var(--cream);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.05em;
  transition: color .3s var(--ease);
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.1;
}
.navbar.scrolled .nav-link { color: var(--ink); }

.nav-link .nav-en {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 11px;
  letter-spacing: 0.15em;
  opacity: 0.7;
  text-transform: uppercase;
}
.nav-link .nav-cn { font-size: 13px; margin-top: 3px; }

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  width: 0; height: 1px;
  background: currentColor;
  transition: width .3s var(--ease);
  transform: translateX(-50%);
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

.nav-link:hover { color: var(--gold); }
.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active { color: var(--gold-deep); }

.nav-progress {
  position: absolute;
  bottom: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--gold);
  transition: width .1s linear;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px; height: 1.5px;
  background: var(--cream);
  transition: all .3s var(--ease);
}
.navbar.scrolled .nav-toggle span { background: var(--ink); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: var(--cream);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.hero-image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  animation: heroZoom 20s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  from { transform: scale(1.05); }
  to { transform: scale(1.12); }
}
.hero-grain {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(31,26,20,0.55) 0%, rgba(31,26,20,0.35) 50%, rgba(31,26,20,0.7) 100%);
  mix-blend-mode: multiply;
}
.hero-vignette {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 70% 50%, transparent 0%, rgba(31,26,20,0.4) 90%),
    linear-gradient(90deg, rgba(31,26,20,0.5) 0%, transparent 60%);
}

.hero-meta {
  position: absolute;
  top: 50%; right: var(--gutter);
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold-soft);
  z-index: 2;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}
.meta-row { display: flex; align-items: center; gap: 8px; }
.meta-label { opacity: 0.6; }
.meta-value { color: var(--cream); }

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 920px;
  padding: 0 var(--gutter);
  margin: 0 auto;
  width: 100%;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--gold-soft);
  margin-bottom: 36px;
  text-transform: uppercase;
}
.eyebrow-dot {
  width: 6px; height: 6px;
  background: var(--gold);
  border-radius: 50%;
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(52px, 8.5vw, 124px);
  line-height: 0.95;
  letter-spacing: 0.01em;
  margin-bottom: 36px;
}
.title-line {
  display: block;
  opacity: 0;
  transform: translateY(40px);
  animation: titleIn 1.2s var(--ease-out) forwards;
}
.title-line-1 { animation-delay: 0.3s; }
.title-line-2 { animation-delay: 0.55s; }
.title-line-3 { animation-delay: 0.8s; }
.title-line em {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--gold-soft);
  font-weight: 400;
}
@keyframes titleIn {
  to { opacity: 1; transform: translateY(0); }
}

.hero-subtitle {
  font-size: clamp(16px, 1.5vw, 20px);
  line-height: 1.9;
  color: rgba(245, 239, 230, 0.85);
  margin-bottom: 56px;
  max-width: 580px;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) forwards;
  animation-delay: 1.1s;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) forwards;
  animation-delay: 1.3s;
}
.hero-actions .btn-primary {
  background: var(--gold);
  color: var(--ink);
}
.hero-actions .btn-primary:hover { background: var(--cream); }
.hero-actions .btn-ghost {
  color: var(--cream);
  border-color: rgba(245, 239, 230, 0.4);
}
.hero-actions .btn-ghost:hover {
  background: var(--cream);
  color: var(--ink);
  border-color: var(--cream);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--gold-soft);
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) forwards;
  animation-delay: 1.6s;
}
.scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, transparent, var(--gold));
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ========== 通用 Section ========== */
section { padding: 140px 0; position: relative; }

/* ========== Strategy / About ========== */
.strategy { background: var(--cream); }
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 32px;
  margin-top: 24px;
}
.about-lede {
  padding-right: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.lede-text {
  font-family: var(--font-serif);
  font-size: clamp(20px, 2vw, 28px);
  line-height: 1.6;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.lede-text strong {
  color: var(--gold-deep);
  font-weight: 600;
}
.lede-mark {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(72px, 9vw, 120px);
  line-height: 1;
  color: var(--gold);
  opacity: 0.18;
  margin-top: 60px;
  letter-spacing: 0.05em;
}

.about-card {
  background: var(--paper);
  padding: 56px 40px;
  border: 1px solid var(--line);
  position: relative;
  transition: all .5s var(--ease);
}
.about-card:hover {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
  transform: translateY(-6px);
}
.about-card:hover .card-title { color: var(--cream); }
.about-card:hover .card-quote { color: var(--gold-soft); }
.about-card:hover .card-body { color: rgba(245, 239, 230, 0.75); }
.about-card:hover .card-tags li { border-color: var(--gold-soft); color: var(--gold-soft); }
.about-card:hover .card-num { color: var(--gold); }

.about-card-restonic:hover { border-color: var(--gold); }
.about-card-vibrelax:hover { border-color: var(--copper); }
.about-card-vibrelax:hover .card-num { color: var(--copper); }
.about-card-vibrelax:hover .card-tags li { border-color: var(--copper-soft); color: var(--copper-soft); }
.about-card-vibrelax:hover .card-quote { color: var(--copper-soft); }

.card-num {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 56px;
  font-weight: 400;
  color: var(--gold-deep);
  line-height: 1;
  margin-bottom: 24px;
  transition: color .4s var(--ease);
}
.about-card-vibrelax .card-num { color: var(--copper-deep); }

.card-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
  color: var(--ink);
  transition: color .4s var(--ease);
}
.card-quote {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 20px;
  transition: color .4s var(--ease);
}
.card-body {
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-mute);
  margin-bottom: 28px;
  transition: color .4s var(--ease);
}
.card-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.card-tags li {
  font-size: 12px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-mute);
  transition: all .4s var(--ease);
}

/* ========== 品牌专属 Section ========== */
.brand-section {
  background: var(--paper);
  position: relative;
  overflow: hidden;
}
.brand-restonic { background: var(--cream); }
.brand-vibrelax { background: var(--paper); }

.brand-accent-bar {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 3px;
  background: var(--gold);
}
.brand-accent-copper { background: var(--copper); }

/* —— 品牌Hero网格 —— */
.brand-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 100px;
}
.brand-hero-reverse .brand-product-card { order: -1; }

/* Keep the RESTONIC introduction and image together without empty grid rows. */
.brand-restonic { padding: 80px 0; }
.restonic-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: auto 1fr;
  gap: 32px 60px;
  align-items: start;
}
.restonic-layout .section-head { grid-column: 1; margin-bottom: 0; }
.restonic-layout .brand-hero-text { grid-column: 1; grid-row: 2; }
.restonic-layout .brand-product-card { grid-column: 2; grid-row: 1 / span 2; }
.restonic-layout .section-lead { margin-top: 24px; }
.restonic-details {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px 60px;
  margin-top: 32px;
  border-top: 1px solid var(--line);
}
.restonic-details .product-desc { margin-bottom: 0; }
.restonic-details .product-spec { border-top: 0; padding-top: 0; }

@media (max-width: 1100px) {
  .restonic-layout { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto; gap: 32px; }
  .restonic-layout .section-head { grid-column: 1; grid-row: 1; }
  .restonic-layout .brand-product-card { grid-column: 1; grid-row: 2; width: 100%; max-width: 560px; justify-self: center; }
  .restonic-layout .brand-hero-text { grid-column: 1; grid-row: 3; }
  .restonic-details { grid-template-columns: minmax(0, 1fr); gap: 20px; }
}

@media (max-width: 900px) {
  section.brand-restonic { padding: 64px 0; }
}

.brand-pillars {
  display: flex;
  flex-direction: column;
  gap: 36px;
}
.pillar {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.pillar-label {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.25em;
  color: var(--gold-deep);
  margin-bottom: 8px;
}
.brand-vibrelax .pillar-label { color: var(--copper-deep); }
.pillar-text {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* —— 产品卡 —— */
.brand-product-card {
  position: relative;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.brand-product-card.visible { opacity: 1; transform: translateY(0); }

.product-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--paper-deep);
}
.product-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease);
}
.brand-product-card:hover .product-image img {
  transform: scale(1.04);
}
.product-tag {
  position: absolute;
  top: 24px; left: 24px;
  padding: 8px 18px;
  background: var(--cream);
  color: var(--ink);
  font-size: 12px;
  letter-spacing: 0.15em;
  font-family: var(--font-serif);
}
.product-tag-copper {
  background: var(--copper);
  color: var(--cream);
}

.product-meta {
  padding-top: 32px;
}
.product-sku {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
  margin-bottom: 12px;
}
.brand-vibrelax .product-sku { color: var(--copper-deep); }
.product-name {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  color: var(--ink);
}
.product-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-mute);
  margin-bottom: 24px;
}
.product-spec {
  list-style: none;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.product-spec li {
  font-size: 14px;
  padding: 8px 0;
  color: var(--ink-soft);
  display: flex;
  gap: 12px;
  align-items: center;
}
.product-spec li span {
  color: var(--gold);
  font-weight: 700;
}
.brand-vibrelax .product-spec li span { color: var(--copper); }

/* —— 内容策略 —— */
.content-strategy {
  border-top: 1px solid var(--line);
  padding-top: 60px;
}
.strategy-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 12px;
}
.strategy-header h4 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
}
.strategy-rule {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.15em;
  color: var(--gold-deep);
}
.brand-vibrelax .strategy-rule { color: var(--copper-deep); }

.strategy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.strategy-card {
  padding: 32px 28px;
  background: var(--cream);
  border: 1px solid var(--line);
  transition: all .4s var(--ease);
}
.brand-vibrelax .strategy-card {
  background: var(--paper);
}
.strategy-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}
.brand-vibrelax .strategy-card:hover { border-color: var(--copper); }

.strategy-platform {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 16px;
  letter-spacing: 0.15em;
  color: var(--gold-deep);
  margin-bottom: 16px;
  font-weight: 600;
}
.strategy-platform-tiktok { color: var(--copper-deep); }
.strategy-platform-ig { color: var(--copper-deep); }
.strategy-platform-amazon { color: var(--copper-deep); }
.brand-restonic .strategy-platform-tiktok,
.brand-restonic .strategy-platform-ig,
.brand-restonic .strategy-platform-amazon { color: var(--gold-deep); }

.strategy-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-mute);
}

/* —— 投放预算条 —— */
.budget-row {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.budget-label {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
  margin-bottom: 16px;
}
.budget-bar {
  display: flex;
  height: 56px;
  border-radius: var(--radius);
  overflow: hidden;
}
.budget-seg {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--cream);
  transition: filter .3s var(--ease);
}
.budget-seg:hover { filter: brightness(1.1); }
.seg-oct { background: var(--gold-deep); }
.seg-nov { background: var(--gold); }
.seg-dec { background: var(--gold-soft); color: var(--ink); }

/* —— 产品矩阵 —— */
.product-matrix {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.matrix-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 32px;
}
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.matrix-item {
  padding: 40px 28px;
  background: var(--cream);
  border: 1px solid var(--line);
  text-align: center;
  transition: all .4s var(--ease);
}
.matrix-item:hover {
  border-color: var(--copper);
  transform: translateY(-4px);
}
.matrix-icon {
  width: 48px; height: 48px;
  margin: 0 auto 20px;
  color: var(--copper-deep);
}
.matrix-icon svg { width: 100%; height: 100%; }
.matrix-item h5 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ink);
}
.matrix-item p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-mute);
}

/* ========== Technology ========== */
.technology {
  background: var(--ink);
  color: var(--cream);
  position: relative;
  overflow: hidden;
}
.values-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(184, 149, 106, 0.08), transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(200, 118, 62, 0.06), transparent 50%);
  pointer-events: none;
}
.technology .section-title .title-cn { color: var(--cream); }
.technology .section-title .title-en { color: var(--gold); }
.technology .section-lead { color: rgba(245, 239, 230, 0.7); }

/* —— 技术流 —— */
.tech-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 24px;
  align-items: center;
  margin-bottom: 80px;
}

.tech-core {
  display: flex;
  justify-content: center;
}
.tech-core-inner {
  text-align: center;
  padding: 48px 36px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  width: 200px; height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.tech-core-label {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0.25em;
  color: var(--gold);
  margin-bottom: 12px;
}
.tech-core-inner h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--cream);
  margin-bottom: 8px;
}
.tech-core-inner p {
  font-size: 13px;
  color: rgba(245, 239, 230, 0.65);
  line-height: 1.5;
}

.tech-branch {
  display: flex;
  align-items: center;
  gap: 20px;
}
.tech-branch-arrow {
  font-family: var(--font-display);
  font-size: 32px;
  color: var(--gold);
  opacity: 0.5;
}

.tech-branch-card {
  padding: 36px 28px;
  border: 1px solid rgba(184, 149, 106, 0.25);
  background: rgba(245, 239, 230, 0.03);
  transition: all .5s var(--ease);
}
.tech-branch-gold { border-color: var(--gold); }
.tech-branch-copper { border-color: var(--copper); }
.tech-branch-card:hover {
  background: rgba(245, 239, 230, 0.06);
  transform: translateY(-4px);
}
.tech-brand {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.25em;
  margin-bottom: 12px;
  font-weight: 600;
}
.tech-branch-gold .tech-brand { color: var(--gold); }
.tech-branch-copper .tech-brand { color: var(--copper-soft); }
.tech-branch-card h4 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--cream);
  margin-bottom: 12px;
}
.tech-branch-card p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 239, 230, 0.65);
}

/* —— 协同 —— */
.tech-synergy {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(184, 149, 106, 0.15);
  border: 1px solid rgba(184, 149, 106, 0.15);
}
.synergy-item {
  background: var(--ink);
  padding: 48px 32px;
  transition: background .5s var(--ease);
}
.synergy-item:hover { background: #2a241d; }
.synergy-num {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 24px;
}
.synergy-item h5 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--cream);
  margin-bottom: 12px;
}
.synergy-item p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 239, 230, 0.65);
}

/* ========== Roadmap / Timeline ========== */
.roadmap { background: var(--cream); }

.timeline {
  position: relative;
  padding-left: 40px;
}
.timeline-track {
  position: absolute;
  left: 8px;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--gold) 0%, var(--copper) 50%, var(--gold) 100%);
}

.timeline-item {
  position: relative;
  padding-bottom: 56px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  transition-delay: var(--delay, 0s);
}
.timeline-item.visible { opacity: 1; transform: translateY(0); }
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -40px;
  top: 4px;
  width: 17px; height: 17px;
  border-radius: 50%;
  border: 3px solid var(--cream);
  z-index: 1;
}
.timeline-dot-gold { background: var(--gold); box-shadow: 0 0 0 2px var(--gold); }
.timeline-dot-copper { background: var(--copper); box-shadow: 0 0 0 2px var(--copper); }

.timeline-content {
  padding: 0;
}
.timeline-date {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
  margin-bottom: 12px;
}
.timeline-content h4 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 16px;
}
.timeline-brands {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.brand-tag {
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  border-radius: 999px;
}
.brand-tag-gold {
  background: rgba(184, 149, 106, 0.12);
  color: var(--gold-deep);
  border: 1px solid var(--gold-soft);
}
.brand-tag-copper {
  background: rgba(200, 118, 62, 0.12);
  color: var(--copper-deep);
  border: 1px solid var(--copper-soft);
}
.timeline-content p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-mute);
  max-width: 760px;
}

/* ========== Numbers ========== */
.numbers {
  background: var(--ink);
  color: var(--cream);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
.numbers::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(184, 149, 106, 0.1), transparent 70%);
}
.numbers .container { position: relative; z-index: 1; }
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.number-item {
  padding: 24px;
  position: relative;
}
.number-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  width: 1px; height: 60px;
  background: rgba(184, 149, 106, 0.3);
}
.number-value {
  font-family: var(--font-display);
  font-size: clamp(52px, 6.5vw, 84px);
  font-weight: 500;
  color: var(--gold);
  line-height: 1;
  letter-spacing: 0.02em;
}
.number-suffix {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(24px, 3vw, 38px);
  color: var(--gold-soft);
  margin-left: 4px;
}
.number-label {
  display: block;
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.15em;
  color: rgba(245, 239, 230, 0.7);
  margin-top: 16px;
}

/* ========== Contact ========== */
.contact { background: var(--cream); }
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  margin-top: 80px;
}
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding-top: 12px;
}
.contact-item {
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.contact-label {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
  margin-bottom: 12px;
  text-transform: uppercase;
}
.contact-item p {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 400;
  color: var(--ink);
}
.contact-item a:hover { color: var(--gold-deep); }

/* Match both contact actions, including link and button line-height differences. */
.contact-shop .btn,
.contact-form > .btn {
  height: 56px;
  min-height: 56px;
  padding-top: 0;
  padding-bottom: 0;
  flex-shrink: 0;
}

@media (min-width: 901px) {
  .contact-info { padding-bottom: 57px; }
  .contact-shop { margin-top: auto; }
  .contact-form { display: flex; flex-direction: column; }
  .contact-form > .btn { margin-top: auto; }
}

/* —— 表单 —— */
.contact-form {
  background: var(--paper);
  padding: 56px 48px;
  border: 1px solid var(--line);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group { margin-bottom: 24px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--ink);
  letter-spacing: 0.05em;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 0;
  border: none;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  font-family: inherit;
  background: transparent;
  color: var(--ink);
  transition: border-color .3s var(--ease);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-bottom-color: var(--gold-deep);
}
.form-group textarea { resize: vertical; min-height: 100px; }

.form-error {
  display: block;
  color: #b85450;
  font-size: 12px;
  margin-top: 6px;
  min-height: 16px;
}
.form-success {
  display: none;
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(184, 149, 106, 0.15);
  color: var(--gold-deep);
  font-size: 14px;
  text-align: center;
  border: 1px solid var(--gold);
}
.form-success.show { display: block; }

/* ========== Footer ========== */
.footer {
  background: var(--ink);
  color: rgba(245, 239, 230, 0.7);
  padding: 100px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 80px;
  padding-bottom: 80px;
  border-bottom: 1px solid rgba(184, 149, 106, 0.2);
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--cream);
  margin-bottom: 24px;
}
.footer-logo-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--cream);
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}
.footer-logo-img {
  width: auto;
  height: 42px;
  object-fit: contain;
}
.footer-tagline {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 239, 230, 0.7);
  max-width: 380px;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer-col h5 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--cream);
  margin-bottom: 24px;
  letter-spacing: 0.1em;
}
.footer-col a {
  display: block;
  font-size: 14px;
  padding: 6px 0;
  color: rgba(245, 239, 230, 0.6);
  transition: color .3s var(--ease);
}
.footer-col a:hover { color: var(--gold); }

.footer-bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(245, 239, 230, 0.4);
  letter-spacing: 0.05em;
}
.footer-mark {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--gold);
}

/* ========== 滚动揭示 ========== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
  transition-delay: var(--delay, 0s);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ========== 响应式 ========== */
@media (max-width: 1100px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
  .about-lede { grid-column: span 2; padding-right: 0; }
  .lede-mark { margin-top: 32px; }
  .brand-hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .brand-hero-reverse .brand-product-card { order: 0; }
  .tech-flow { grid-template-columns: 1fr; gap: 32px; }
  .tech-branch { justify-content: center; }
  .tech-core { margin: 0 auto; }
  .tech-synergy { grid-template-columns: 1fr 1fr; }
  .strategy-grid { grid-template-columns: 1fr 1fr; }
  .matrix-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  :root { --gutter: 20px; }
  section { padding: 100px 0; }

  .nav-menu {
    position: fixed;
    top: 0; right: -100%;
    width: 80%; max-width: 360px;
    height: 100vh;
    background: var(--ink);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 80px 40px;
    gap: 28px;
    transition: right .4s var(--ease);
    z-index: 99;
  }
  .nav-menu.active { right: 0; }
  .nav-menu .nav-link { color: var(--cream); }
  .nav-menu .nav-link .nav-en { color: var(--gold); }
  .nav-toggle { display: flex; z-index: 101; }

  .hero-meta { display: none; }

  .about-grid { grid-template-columns: 1fr; }
  .about-lede { grid-column: span 1; }
  .about-card { padding: 40px 28px; }

  .brand-hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .brand-hero-reverse .brand-product-card { order: 0; }

  .strategy-grid { grid-template-columns: 1fr; gap: 16px; }
  .matrix-grid { grid-template-columns: 1fr; gap: 16px; }

  .tech-flow { grid-template-columns: 1fr; }
  .tech-branch { flex-direction: column; }
  .tech-branch-arrow { transform: rotate(90deg); }
  .tech-synergy { grid-template-columns: 1fr; }
  .synergy-item { padding: 36px 28px; }

  .numbers-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px 20px;
  }
  .number-item::after { display: none; }

  .contact-wrapper { grid-template-columns: 1fr; gap: 60px; }
  .contact-form { padding: 40px 28px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .footer-top { grid-template-columns: 1fr; gap: 60px; padding-bottom: 60px; }
  .footer-cols { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 560px) {
  .hero-title { font-size: clamp(40px, 11vw, 64px); }
  .hero-content { padding-top: 80px; }
  .hero-actions .btn { padding: 14px 24px; }
  .tech-synergy { grid-template-columns: 1fr; }
  .numbers-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .lede-mark { font-size: 72px; }
  .budget-bar { flex-direction: column; height: auto; }
  .budget-seg { padding: 14px 0; }
  .timeline { padding-left: 32px; }
  .timeline-dot { left: -32px; }
}