/* ============================================================
   暖木星 · 品牌网站 — 全局设计系统
   设计方向：「暗色科技画布 × 暖色手工品牌灵魂」
   ============================================================ */

/* ---- Design Tokens ---- */
:root {
  /* Background */
  --bg-deepest: #06091e;
  --bg-primary: #0a0c22;
  --bg-surface: #0f112a;
  --bg-elevated: #171332;
  --bg-hover: #1e1838;

  /* Accent */
  --accent-copper: #d59b75;
  --accent-copper-hover: #e5ae88;
  --accent-rose: #c08070;
  --accent-blush: #e8bbba;
  --accent-gold: #d4a855;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #d59b75, #c08070);
  --gradient-brand: linear-gradient(135deg, #e8bbba, #d59b75);
  --gradient-surface: linear-gradient(180deg, #0f112a, #171332);
  --gradient-btn: linear-gradient(135deg, #d59b75, #c08070, #d4a855);

  /* Text */
  --text-primary: #efe8e0;
  --text-secondary: #9a8e98;
  --text-faint: rgba(180, 160, 155, 0.35);
  --text-hero: #f5f0ea;

  /* Border */
  --border-default: rgba(180, 155, 145, 0.12);
  --border-glow: rgba(213, 155, 117, 0.30);
  --border-copper: rgba(213, 155, 117, 0.45);

  /* Shadow */
  --shadow-card: 0 4px 24px rgba(5, 6, 18, 0.6);
  --shadow-card-lg: 0 12px 48px rgba(5, 6, 18, 0.7);
  --shadow-btn: 0 4px 20px rgba(180, 120, 90, 0.25);
  --shadow-btn-lg: 0 8px 36px rgba(180, 120, 90, 0.40);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  /* Easing */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Transition */
  --duration-fast: 0.25s;
  --duration-base: 0.4s;

  /* Semantic */
  --color-success: #7ab88a;
  --color-warning: #d4a855;
  --color-error: #c47070;

  /* Font stacks */
  --font-title-cn: 'ZCOOL KuaiLe', 'Ma Shan Zheng', cursive;
  --font-title-en: 'Outfit', 'Inter', system-ui, sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

/* ---- Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  background: var(--bg-deepest);
  color: var(--text-primary);
}
body {
  font-family: var(--font-body);
  background: var(--bg-deepest);
  overflow-x: hidden;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg-deepest); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent-copper), var(--accent-gold));
  border-radius: 10px;
}

/* ---- Selection ---- */
::selection { background: rgba(213, 155, 117, 0.35); color: #fff; }

/* ---- Utility ---- */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ============================================================
   GRAIN TEXTURE OVERLAY
   ============================================================ */
.grain-overlay {
  position: fixed; inset: 0; z-index: 60;
  pointer-events: none; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat; background-size: 200px 200px;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: 72px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 max(6%, 40px);
  background: rgba(10, 12, 34, 0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-default);
  transition: height 0.35s var(--ease-out),
              background 0.35s var(--ease-out),
              border-color 0.35s var(--ease-out);
}
nav.compact {
  height: 56px;
  background: rgba(10, 12, 34, 0.94);
  border-bottom-color: var(--border-glow);
}

nav .logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
  font-family: var(--font-title-cn);
  font-size: 1.3rem; font-weight: 400;
  background: var(--gradient-brand);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: font-size 0.35s var(--ease-out);
}
nav.compact .logo { font-size: 1.15rem; }

nav .logo-img {
  width: 36px; height: 36px; border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent-copper);
  transition: width 0.35s, height 0.35s;
}
nav.compact .logo-img { width: 30px; height: 30px; }

nav .links { display: flex; gap: 28px; list-style: none; align-items: center; }
nav .links a {
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.8rem; font-weight: 500;
  position: relative; padding: 4px 0;
  transition: color 0.3s;
}
nav .links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 100%; height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
  transform: scaleX(0); transform-origin: left center;
  transition: transform 0.35s var(--ease-out);
}
nav .links a:hover, nav .links a.active { color: var(--text-primary); }
nav .links a:hover::after, nav .links a.active::after { transform: scaleX(1); }

/* ---- Hamburger Button ---- */
nav .hamburger {
  display: none;
  background: none; border: none; cursor: pointer;
  padding: 8px; z-index: 1100;
  font-size: 1.6rem; color: var(--accent-copper);
  transition: color 0.3s;
}
nav .hamburger:hover { color: var(--accent-copper-hover); }

/* Mobile nav overlay */
.nav-overlay {
  position: fixed; inset: 0; z-index: 1050;
  background: rgba(6, 9, 30, 0.96);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 28px;
  opacity: 0; visibility: hidden;
  transition: opacity 0.45s var(--ease-out), visibility 0.45s;
}
.nav-overlay.open {
  opacity: 1; visibility: visible;
}
.nav-overlay a {
  font-family: var(--font-title-cn);
  font-size: 1.5rem; color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s;
}
.nav-overlay a:hover,
.nav-overlay a.active {
  color: var(--accent-copper);
}

/* Mobile menu */
@media (max-width: 768px) {
  nav .links { display: none; }
  nav { padding: 0 5%; }
  nav .hamburger { display: block; }
}

/* ============================================================
   SECTIONS
   ============================================================ */
section {
  position: relative; z-index: 10;
  min-height: 100dvh;
  display: flex; flex-direction: column;
  padding: 120px max(6%, 40px) 100px;
}
section .inner { max-width: 1280px; width: 100%; margin: 0 auto; }

@media (max-width: 768px) {
  section { padding: 80px max(5%, 16px) 60px; }
}
@media (max-width: 480px) {
  section { padding: 80px 5% 60px; }
}

/* ---- Section Labels & Titles ---- */
.s-label {
  font-family: var(--font-title-en);
  font-size: 0.65rem; letter-spacing: 0.25em;
  color: var(--accent-gold); text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 600;
}
.s-label--line {
  display: flex; align-items: center; gap: 12px;
}
.s-label--line::before {
  content: ''; width: 18px; height: 1.5px;
  background: var(--accent-copper);
}

.s-title {
  font-family: var(--font-title-cn);
  font-size: clamp(1.8rem, 4vw, 3rem);
  margin-bottom: 12px; line-height: 1.25;
  color: var(--text-hero);
}
.s-title.gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.s-title mark {
  background: none; color: var(--accent-copper);
}

.s-sub {
  color: var(--text-secondary); font-size: 0.95rem;
  max-width: 480px; line-height: 1.7;
}

/* ---- Typography ---- */
.s-body {
  font-size: 0.95rem; line-height: 1.75;
  color: var(--text-secondary);
}
.s-body--large { font-size: 1.08rem; }

.caption {
  font-size: 0.8rem; color: var(--text-faint);
}

.s-number {
  font-family: var(--font-title-en);
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Divider ---- */
.s-divider {
  width: 60px; height: 2px;
  background: linear-gradient(90deg, var(--accent-copper), transparent);
  margin: 24px 0;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 32px; border-radius: var(--radius-full);
  font-size: 0.9rem; font-weight: 600;
  font-family: inherit; text-decoration: none; cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  border: none; outline: none; position: relative;
}
.btn:active { transform: scale(0.97); }

.btn-fill {
  background: var(--gradient-btn);
  color: #0a0c22;
  box-shadow: var(--shadow-btn);
}
.btn-fill:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-lg);
  filter: brightness(1.08);
}

.btn-line {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-default);
  backdrop-filter: blur(8px);
}
.btn-line:hover {
  border-color: var(--accent-copper);
  background: rgba(213, 155, 117, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(213, 155, 117, 0.12);
}

/* ============================================================
   GLASS CARD
   ============================================================ */
.glass-card {
  background: linear-gradient(135deg, rgba(15, 17, 42, 0.72), rgba(23, 19, 50, 0.48));
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  transition: all var(--duration-base) var(--ease-out);
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-card);
}
.glass-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(213, 155, 117, 0.05), transparent 60%);
  pointer-events: none; border-radius: inherit;
}
.glass-card:hover {
  border-color: var(--border-copper);
  transform: translateY(-4px);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(213, 155, 117, 0.3),
    0 0 30px rgba(213, 155, 117, 0.08);
}
.glass-card:hover::before {
  background: linear-gradient(135deg, rgba(213, 155, 117, 0.12), transparent 60%);
}

/* Featured variant */
.glass-card--featured {
  border-left: 3px solid var(--accent-copper);
  padding: 36px 28px;
}
.glass-card--featured:hover { border-left-width: 4px; }

/* ============================================================
   LOADING SCREEN
   ============================================================ */
#loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg-deepest);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  transition: opacity 0.7s var(--ease-out), visibility 0.7s;
}
#loader.hidden {
  opacity: 0; visibility: hidden; pointer-events: none;
}
#loader .ring-wrap { position: relative; width: 80px; height: 80px; margin-bottom: 28px; }
#loader .ring {
  position: absolute; inset: 0;
  border: 2.5px solid transparent; border-radius: 50%;
}
#loader .ring:nth-child(1) {
  border-top-color: var(--accent-copper); border-right-color: var(--accent-copper);
  animation: ring-spin 1.6s linear infinite;
}
#loader .ring:nth-child(2) {
  inset: 8px;
  border-bottom-color: var(--accent-gold); border-left-color: var(--accent-gold);
  animation: ring-spin 1.2s linear infinite reverse;
}
#loader .ring:nth-child(3) {
  inset: 16px;
  border-top-color: var(--accent-blush); border-left-color: var(--accent-blush);
  animation: ring-spin 0.9s ease-in-out infinite;
}
#loader .loader-text {
  font-family: var(--font-title-cn);
  font-size: 15px; letter-spacing: 0.15em;
  color: var(--accent-gold);
  animation: loader-pulse 1.8s ease-in-out infinite;
}
@keyframes ring-spin { to { transform: rotate(360deg); } }
@keyframes loader-pulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
}
.reveal.revealed { opacity: 1; transform: translateY(0); }

.reveal-left {
  opacity: 0; transform: translateX(-40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal-left.revealed { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0; transform: translateX(40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal-right.revealed { opacity: 1; transform: translateX(0); }

.reveal-scale {
  opacity: 0; transform: scale(0.9);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal-scale.revealed { opacity: 1; transform: scale(1); }

/* Stagger delays — 50ms increments */
.delay-1 { transition-delay: 0.05s; }
.delay-2 { transition-delay: 0.10s; }
.delay-3 { transition-delay: 0.15s; }
.delay-4 { transition-delay: 0.20s; }
.delay-5 { transition-delay: 0.25s; }
.delay-6 { transition-delay: 0.30s; }

/* ============================================================
   IMAGE FADE-IN
   ============================================================ */
img.fade-in {
  opacity: 0; transform: scale(0.96);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
img.fade-in.loaded { opacity: 1; transform: scale(1); }

/* ============================================================
   PAGE HERO BANNER (shared for sub-pages)
   ============================================================ */
.page-hero {
  min-height: 50vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding-top: 120px; padding-bottom: 60px;
}
.page-hero .page-hero-title {
  font-family: var(--font-title-cn);
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--text-hero);
  margin-bottom: 12px;
}
.page-hero .page-hero-sub {
  font-size: 1.05rem; color: var(--text-secondary);
  max-width: 520px;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  text-align: center; padding: 48px 6%;
  color: var(--text-secondary); font-size: 0.78rem;
  border-top: 1px solid var(--border-default);
  position: relative; z-index: 10;
  background: var(--bg-deepest);
}
footer .footer-brand {
  font-family: var(--font-title-cn);
  font-size: 0.9rem;
  background: var(--gradient-brand);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}
footer .footer-tagline { color: var(--text-faint); font-size: 0.72rem; margin: 4px 0 16px; }
footer .footer-links { display: flex; gap: 20px; justify-content: center; margin-bottom: 16px; }
footer .footer-links a {
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.78rem; transition: color 0.3s;
}
footer .footer-links a:hover { color: var(--accent-copper); }

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal, .reveal-left, .reveal-right, .reveal-scale { opacity: 1; transform: none; }
  img.fade-in { opacity: 1; transform: none; }
  #loader { display: none; }
}

/* ============================================================
   HERO SECTION (index)
   ============================================================ */
#hero { justify-content: center; padding-top: 120px; padding-bottom: 80px; }
#hero .hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px; align-items: center;
  max-width: 1280px; width: 100%; margin: 0 auto;
}
#hero .hero-text { text-align: left; }
#hero .hero-text .s-label { margin-bottom: 20px; }
#hero .hero-text h1 {
  font-family: var(--font-title-cn);
  font-size: clamp(2.8rem, 7vw, 5.8rem);
  line-height: 1.08; margin-bottom: 20px;
  color: var(--text-hero);
}
#hero .hero-text h1 .hl {
  background: var(--gradient-brand);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
#hero .hero-text .hero-sub {
  color: var(--text-secondary); font-size: 1.05rem;
  max-width: 420px; line-height: 1.8; margin-bottom: 32px;
}
#hero .hero-text .hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
#hero .hero-visual {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-default);
  background: rgba(15, 17, 42, 0.5);
}
#hero .hero-visual canvas { width: 100%; height: 100%; }

@media (max-width: 900px) {
  #hero .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  #hero .hero-text { text-align: center; }
  #hero .hero-text .hero-sub { margin-left: auto; margin-right: auto; }
  #hero .hero-text .hero-ctas { justify-content: center; }
  #hero .hero-visual { aspect-ratio: 16/9; max-height: 350px; }
}
@media (max-width: 480px) {
  #hero .hero-text h1 { font-size: clamp(2rem, 10vw, 3rem); }
  #hero .hero-visual { max-height: 280px; }
  #hero .hero-grid { gap: 28px; }
  #hero .hero-text .hero-sub { font-size: 0.9rem; }
}

/* ============================================================
   BRAND SPLIT — 阴阳双品牌
   ============================================================ */
#brand-split { padding-top: 100px; padding-bottom: 100px; }
#brand-split .brand-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 1080px; margin: 0 auto;
}
#brand-split .brand-card {
  padding: 36px 30px;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
}
#brand-split .brand-card .brand-icon {
  font-size: 2.4rem;
  margin-bottom: 4px;
}
#brand-split .brand-card h3 {
  font-family: var(--font-title-cn);
  font-size: 1.35rem; margin-bottom: 4px;
}
#brand-split .brand-card .brand-tag {
  font-size: 0.72rem; font-weight: 600;
  padding: 2px 10px; border-radius: var(--radius-full);
  background: rgba(213, 155, 117, 0.12);
  color: var(--accent-copper);
  margin-left: 8px;
}
#brand-split .brand-card p {
  font-size: 0.88rem; color: var(--text-secondary);
  line-height: 1.7; max-width: 380px;
}
#brand-split .brand-card ul {
  list-style: none; display: flex; flex-direction: column; gap: 8px;
  font-size: 0.82rem; color: var(--text-secondary);
  margin-top: 8px;
}
#brand-split .brand-card ul li::before {
  content: '✦'; color: var(--accent-copper); margin-right: 8px;
}

@media (max-width: 768px) {
  #brand-split .brand-grid { grid-template-columns: 1fr; }
  #brand-split .brand-card { padding: 24px 20px; }
  #brand-split .brand-card h3 { font-size: 1.2rem; }
  #brand-split .brand-card p { font-size: 0.82rem; }
  #brand-split .brand-card ul { font-size: 0.76rem; }
  #brand-split .brand-card .brand-icon { font-size: 2rem; }
}

/* ============================================================
   PRODUCT CARDS (index + products page)
   ============================================================ */
#gallery { padding-top: 100px; padding-bottom: 100px; }
#gallery .gallery-header { margin-bottom: 48px; }
#gallery .gallery-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 16px;
  max-width: 1280px; margin: 0 auto;
}
#gallery .prod-card {
  padding: 24px 20px;
  display: flex; flex-direction: column;
  align-items: flex-start; gap: 12px;
}
#gallery .prod-card.featured { grid-row: span 2; }
#gallery .prod-card .prod-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-sm);
  display: block;
  background: linear-gradient(135deg, rgba(15,17,42,0.85), rgba(23,19,50,0.7));
}
#gallery .prod-card.featured .prod-img { aspect-ratio: 3/2; }
#gallery .prod-card .prod-name {
  font-weight: 700; font-size: 1rem;
  font-family: var(--font-title-cn);
}
#gallery .prod-card .prod-price {
  font-family: var(--font-title-en);
  font-size: 1.1rem; font-weight: 700;
  color: var(--accent-gold);
}
#gallery .prod-card .prod-desc {
  font-size: 0.78rem; color: var(--text-secondary); line-height: 1.6;
}
/* Product spec tags */
.prod-tags {
  display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px;
}
.spec-tag {
  font-size: 0.66rem; padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(213, 155, 117, 0.08);
  color: var(--accent-copper);
  font-weight: 600;
}

@media (max-width: 768px) {
  #gallery .gallery-grid { grid-template-columns: 1fr 1fr; }
  #gallery .prod-card.featured { grid-row: span 1; grid-column: span 2; }
  #gallery .prod-card .prod-img { aspect-ratio: 1/1; }
  #gallery .prod-card.featured .prod-img { aspect-ratio: 1/1; }
  #gallery .prod-card { padding: 18px 14px; }
  #gallery .prod-card .prod-name { font-size: 0.9rem; }
  #gallery .prod-card .prod-desc { font-size: 0.72rem; }
}
@media (max-width: 480px) {
  #gallery .gallery-grid { grid-template-columns: 1fr; }
  #gallery .prod-card.featured { grid-column: span 1; }
}

/* ============================================================
   NFC SECTION (index)
   ============================================================ */
#nfc { padding-top: 100px; padding-bottom: 100px; }
#nfc .nfc-header { margin-bottom: 48px; }
#nfc .nfc-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
  max-width: 1280px; margin: 0 auto;
}
#nfc .nfc-card {
  padding: 30px 22px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  cursor: pointer;
}
#nfc .nfc-card:nth-child(1) { grid-column: 1/6; }
#nfc .nfc-card:nth-child(2) { grid-column: 6/13; margin-top: 24px; }
#nfc .nfc-card:nth-child(3) { grid-column: 2/7; margin-top: -16px; }
#nfc .nfc-card:nth-child(4) { grid-column: 7/12; margin-top: -16px; }
#nfc .nfc-card:hover {
  border-color: var(--accent-gold);
  box-shadow: 0 0 36px rgba(212, 168, 85, 0.12);
}
#nfc .nfc-card .nfc-icon {
  font-size: 2rem; line-height: 1;
}
#nfc .nfc-card .nfc-name {
  font-weight: 700; font-size: 0.95rem;
  font-family: var(--font-title-cn);
}
#nfc .nfc-card .nfc-desc {
  font-size: 0.76rem; color: var(--text-secondary); line-height: 1.6;
}
#nfc .nfc-card .nfc-type-tag {
  font-size: 0.65rem; padding: 2px 10px; border-radius: var(--radius-full);
  background: rgba(213, 155, 117, 0.1); color: var(--accent-copper);
  font-weight: 600;
}
#nfc .nfc-tagline {
  text-align: center; margin-top: 32px;
  color: var(--accent-gold); font-weight: 600; font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}

@media (max-width: 768px) {
  #nfc .nfc-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  #nfc .nfc-card { grid-column: span 1 !important; margin-top: 0 !important; padding: 24px 18px; }
  #nfc .nfc-card .nfc-name { font-size: 0.88rem; }
  #nfc .nfc-card .nfc-desc { font-size: 0.72rem; }
}
@media (max-width: 480px) {
  #nfc .nfc-grid { grid-template-columns: 1fr; gap: 12px; }
  #nfc .nfc-card { padding: 20px 16px; }
}

/* ============================================================
   CONTACT SECTION (index + contact page)
   ============================================================ */
#contact { padding-top: 100px; padding-bottom: 100px; }
#contact .contact-header { margin-bottom: 48px; }
#contact .contact-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  max-width: 1280px; margin: 0 auto;
}
#contact .contact-card {
  padding: 28px 20px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
#contact .contact-card:nth-child(1) { grid-column: span 2; }
#contact .contact-card:nth-child(2) { grid-column: span 3; }
#contact .contact-card:nth-child(3) { grid-column: span 2; }
#contact .contact-card:nth-child(4) { grid-column: span 3; }
#contact .contact-card .contact-icon {
  font-size: 1.5rem;
}
#contact .contact-card .contact-name {
  font-weight: 600; font-size: 0.85rem;
}
#contact .contact-card .contact-value {
  color: var(--text-secondary); font-size: 0.78rem;
}
#contact .contact-card .contact-qr {
  width: 120px; height: 120px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-default);
  object-fit: contain;
}
/* Social link buttons */
#contact .social-links {
  display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;
  margin-top: 20px;
}
#contact .social-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; border-radius: var(--radius-full);
  background: rgba(213, 155, 117, 0.08);
  border: 1px solid var(--border-default);
  color: var(--text-primary); text-decoration: none;
  font-size: 0.85rem; font-weight: 500;
  transition: all var(--duration-fast) var(--ease-out);
}
#contact .social-btn:hover {
  border-color: var(--accent-copper);
  background: rgba(213, 155, 117, 0.15);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  #contact .contact-grid { grid-template-columns: 1fr 1fr; }
  #contact .contact-card { grid-column: span 1 !important; padding: 22px 16px; }
}
@media (max-width: 480px) {
  #contact .contact-grid { grid-template-columns: 1fr; }
  #contact .contact-card .contact-qr { width: 100px; height: 100px; }
  #contact .contact-card { padding: 20px 14px; }
}

/* ============================================================
   PRODUCTS PAGE
   ============================================================ */
#products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1280px; margin: 0 auto;
  padding-bottom: 80px;
}
#products-grid .product-detail-card {
  padding: 28px 22px;
  display: flex; flex-direction: column; gap: 14px;
}
#products-grid .product-detail-card .prod-detail-img {
  width: 100%; aspect-ratio: 4/3;
  object-fit: cover; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(15,17,42,0.85), rgba(23,19,50,0.7));
}
#products-grid .product-detail-card .prod-detail-spec {
  display: flex; gap: 8px; flex-wrap: wrap;
}
#products-grid .product-detail-card .spec-tag {
  font-size: 0.68rem; padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(213, 155, 117, 0.08);
  color: var(--accent-copper);
  font-weight: 600;
}

/* NFC highlight card */
.nfc-highlight-card {
  max-width: 800px; margin: 60px auto 80px;
  padding: 40px 36px; text-align: center;
  border-color: var(--accent-gold);
}
.nfc-highlight-card .nfc-highlight-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin-top: 24px; text-align: left;
}
.nfc-highlight-card .nfc-highlight-item {
  padding: 18px 16px; border-radius: var(--radius-sm);
  background: rgba(15, 17, 42, 0.5);
  border: 1px solid var(--border-default);
}

@media (max-width: 768px) {
  #products-grid { grid-template-columns: 1fr 1fr; }
  .nfc-highlight-card .nfc-highlight-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  #products-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   PRICING PAGE
   ============================================================ */
#pricing-content {
  max-width: 1080px; margin: 0 auto; padding-bottom: 80px;
}
#pricing-content .pricing-sequence { margin-bottom: 60px; }
#pricing-content .pricing-sequence .seq-header {
  margin-bottom: 32px; text-align: center;
}
#pricing-content .pricing-table {
  display: grid; gap: 12px;
}
#pricing-content .pricing-row {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 8px;
  padding: 14px 20px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-default);
  background: rgba(15, 17, 42, 0.4);
  align-items: center;
}
#pricing-content .pricing-row.header {
  background: rgba(213, 155, 117, 0.08);
  border-color: var(--border-copper);
  font-weight: 700; font-size: 0.82rem;
  color: var(--accent-copper);
}
#pricing-content .pricing-row .price {
  font-family: var(--font-title-en); font-weight: 700;
  color: var(--accent-gold); text-align: center;
}
#pricing-content .pricing-note {
  font-size: 0.78rem; color: var(--text-faint);
  text-align: center; margin-top: 8px;
}

/* Steps */
#pricing-content .steps {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 12px; margin-top: 32px;
}
#pricing-content .step {
  padding: 24px 16px; text-align: center;
}
#pricing-content .step .step-num {
  font-family: var(--font-title-en); font-size: 2rem; font-weight: 900;
  color: var(--accent-copper); margin-bottom: 8px;
}
#pricing-content .step .step-label {
  font-weight: 600; font-size: 0.95rem;
}
#pricing-content .step .step-arrow {
  color: var(--accent-gold); font-size: 1.2rem;
  position: absolute; right: -14px; top: 50%;
  transform: translateY(-50%);
}

@media (max-width: 768px) {
  #pricing-content .steps { grid-template-columns: repeat(2, 1fr); }
  #pricing-content .pricing-row { grid-template-columns: 1fr 1fr; font-size: 0.78rem; gap: 6px; padding: 12px 16px; }
  #pricing-content .pricing-row.header { display: none; }
  #pricing-content .pricing-table { gap: 8px; }
}
@media (max-width: 480px) {
  #pricing-content .steps { grid-template-columns: 1fr; gap: 10px; }
  #pricing-content .pricing-row { grid-template-columns: 1fr; text-align: center; font-size: 0.74rem; padding: 14px 14px; gap: 4px; }
  #pricing-content .pricing-row > span:first-child { font-weight: 700; color: var(--accent-copper); font-size: 0.84rem; }
  #pricing-content .pricing-row > span:last-child { font-size: 0.7rem; color: var(--text-faint); }
}

/* ============================================================
   CONTACT PAGE — About story
   ============================================================ */
#about-story {
  max-width: 720px; margin: 0 auto 80px;
  text-align: center;
}
#about-story .story-text {
  font-size: 1.05rem; line-height: 2;
  color: var(--text-secondary);
}
#about-story .story-text strong {
  color: var(--accent-copper);
}

/* ============================================================
   RESPONSIVE UTILITY
   ============================================================ */
@media (max-width: 768px) {
  .glass-card { padding: 20px 18px; }
  .glass-card--featured { padding: 24px 20px; }
  .s-title { font-size: clamp(1.6rem, 5vw, 2.4rem); }
  .page-hero .page-hero-title { font-size: clamp(1.8rem, 6vw, 2.8rem); }
}
@media (max-width: 480px) {
  .btn { padding: 12px 24px; font-size: 0.82rem; }
  .glass-card { padding: 16px 14px; }
  .glass-card--featured { padding: 20px 16px; }
  .s-title { font-size: clamp(1.4rem, 7vw, 2rem); }
  .page-hero .page-hero-title { font-size: clamp(1.6rem, 8vw, 2.2rem); }
  .s-sub { font-size: 0.85rem; }
  .s-body { font-size: 0.88rem; }
  .s-label { font-size: 0.6rem; }
}