:root {
  color-scheme: light;
  --bg: #f5f5f7;
  --bg2: #ffffff;
  --surface: rgba(255,255,255,0.78);
  --surface2: #fbfbfd;
  --border: rgba(0,0,0,0.08);
  --border2: rgba(0,0,0,0.12);
  --text: #1d1d1f;
  --text2: #515154;
  --text3: #86868b;
  --orange: #ff6a00;
  --orange2: #ff9500;
  --green: #6fbf45;
  --blue: #0071e3;
  --orange-bg: rgba(255,106,0,0.08);
  --orange-border: rgba(255,106,0,0.22);
  --orange-glow: rgba(255,149,0,0.18);
  --gradient: linear-gradient(135deg, #ff6a00 0%, #ff9500 55%, #7ac943 100%);
  --glass: rgba(255,255,255,0.72);
  --shadow-sm: 0 8px 24px rgba(0,0,0,0.06);
  --shadow-md: 0 20px 60px rgba(0,0,0,0.08);
  --shadow-lg: 0 36px 90px rgba(0,0,0,0.12);
  --max: 1120px;
  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 50% 0%, rgba(255,255,255,0.96) 0, rgba(245,245,247,0) 36rem),
    linear-gradient(180deg, #fbfbfd 0%, var(--bg) 42%, #ffffff 100%);
  line-height: 1.5;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }

/* ═══ NAV · Apple-like translucent light bar ═══ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(251,251,253,0.74);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.nav-inner { height: 48px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { height: 26px; width: auto; display: block; filter: drop-shadow(0 1px 1px rgba(0,0,0,0.04)); }
.nav-links { display: flex; gap: 30px; font-size: 12px; color: rgba(29,29,31,0.78); font-weight: 500; letter-spacing: -0.01em; }
.nav-links a { transition: color 0.2s var(--ease); }
.nav-links a:hover { color: #000; }
.nav-cta {
  font-size: 12px; color: #fff; font-weight: 500;
  background: var(--blue); border: 1px solid rgba(0,113,227,0.24); border-radius: 980px;
  padding: 5px 13px; transition: all 0.2s var(--ease); box-shadow: 0 3px 10px rgba(0,113,227,0.16);
}
.nav-cta:hover { background: #147ce5; transform: translateY(-1px); }

/* ═══ HERO · bright product stage ═══ */
.hero {
  position: relative;
  padding: 132px 0 104px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(ellipse 72% 44% at 50% 26%, rgba(255,255,255,0.98), transparent 68%),
    radial-gradient(ellipse 36% 22% at 42% 58%, rgba(255,149,0,0.13), transparent 72%),
    radial-gradient(ellipse 32% 20% at 62% 56%, rgba(122,201,67,0.10), transparent 75%);
}
.hero::before {
  content: "";
  position: absolute; left: 50%; top: 78px; width: min(780px, 88vw); height: min(780px, 88vw);
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(255,255,255,0));
  border-radius: 50%; filter: blur(4px); opacity: 0.82; pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--text3); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 18px;
}
.hero-label::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--gradient); box-shadow: 0 0 18px var(--orange-glow); }
.hero h1 {
  font-size: clamp(48px, 8.2vw, 98px); font-weight: 700;
  letter-spacing: -0.065em; line-height: 1.03; margin-bottom: 24px;
  color: var(--text);
}
.hero h1 .accent {
  background: linear-gradient(100deg, #1d1d1f 0%, #616166 36%, #ff6a00 70%, #6fbf45 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-desc {
  font-size: clamp(18px, 2.2vw, 24px); color: var(--text2);
  max-width: 720px; margin: 0 auto 34px; line-height: 1.58; letter-spacing: -0.02em;
}
.hero-buttons { display: flex; gap: 14px; justify-content: center; margin-bottom: 56px; }
.hero-img {
  width: min(960px, 100%); margin: 0 auto; border-radius: 34px;
  overflow: hidden; border: 1px solid rgba(255,255,255,0.75);
  background: linear-gradient(180deg, #fff, #f2f2f4);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,0.9);
  transform: translateZ(0);
}
.hero-img img { width: 100%; height: auto; display: block; filter: saturate(1.04) contrast(1.02); }

.btn-primary,
.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 44px; padding: 11px 23px; border-radius: 980px;
  font-weight: 500; font-size: 15px; cursor: pointer; transition: all 0.22s var(--ease);
}
.btn-primary { background: var(--blue); color: #fff; border: 1px solid rgba(0,113,227,0.18); box-shadow: 0 12px 28px rgba(0,113,227,0.18); }
.btn-primary:hover { transform: translateY(-2px); background: #147ce5; box-shadow: 0 18px 36px rgba(0,113,227,0.22); }
.btn-secondary { background: rgba(255,255,255,0.72); color: var(--blue); border: 1px solid rgba(0,113,227,0.22); backdrop-filter: blur(14px); }
.btn-secondary:hover { background: rgba(255,255,255,0.95); transform: translateY(-2px); }

/* ═══ SECTION ═══ */
section { padding: 112px 0; }
.eyebrow {
  font-size: 13px; color: var(--orange); font-weight: 700;
  letter-spacing: 0.11em; text-transform: uppercase; margin-bottom: 14px;
}
.section-title {
  font-size: clamp(38px, 5.8vw, 68px); font-weight: 700;
  letter-spacing: -0.055em; line-height: 1.06; margin-bottom: 18px;
  color: var(--text);
}
.section-desc { font-size: 20px; color: var(--text2); max-width: 640px; line-height: 1.65; letter-spacing: -0.02em; }

/* ═══ FEATURE ROW ═══ */
.feature-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 64px; }
.feature-item {
  min-height: 230px;
  background: var(--surface);
  padding: 38px 32px; border: 1px solid rgba(255,255,255,0.72); border-radius: 28px;
  box-shadow: var(--shadow-sm); backdrop-filter: blur(18px);
  transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease), background 0.24s var(--ease);
}
.feature-item:hover { transform: translateY(-5px); background: #fff; box-shadow: var(--shadow-md); }
.feature-item h3 { font-size: 21px; font-weight: 650; margin-bottom: 10px; letter-spacing: -0.02em; }
.feature-item p { font-size: 14px; color: var(--text2); line-height: 1.75; }
.feature-item .icon { font-size: 30px; margin-bottom: 18px; filter: saturate(1.06); }

/* ═══ PRODUCT GRID ═══ */
.product-section {
  background: linear-gradient(180deg, #f5f5f7 0%, #fff 42%, #f5f5f7 100%);
}
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 64px; }
.product-card {
  border-radius: 30px; overflow: hidden;
  background: #fff; border: 1px solid rgba(0,0,0,0.06);
  box-shadow: var(--shadow-sm);
  transition: all 0.28s var(--ease);
}
.product-card:hover { transform: translateY(-7px) scale(1.005); box-shadow: var(--shadow-lg); border-color: rgba(0,0,0,0.08); }
.product-card-img {
  width: 100%; aspect-ratio: 1; display: block; object-fit: cover;
  background: linear-gradient(180deg, #fbfbfd, #f0f0f2);
}
.product-card-body { padding: 26px 26px 28px; }
.product-card-body h4 { font-size: 19px; font-weight: 650; margin-bottom: 7px; letter-spacing: -0.025em; }
.product-card-body p { font-size: 14px; color: var(--text2); line-height: 1.68; }
.product-card-body .tag {
  display: inline-block; font-size: 11px; color: var(--orange);
  background: rgba(255,106,0,0.08); border: 1px solid rgba(255,106,0,0.18);
  padding: 4px 10px; border-radius: 980px; margin-bottom: 12px; font-weight: 600;
}

/* ═══ SUPPLY ═══ */
.supply-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 64px; }
.supply-card {
  padding: 34px 26px; border-radius: 28px;
  background: #fff; border: 1px solid rgba(0,0,0,0.06);
  box-shadow: var(--shadow-sm); transition: all 0.24s var(--ease);
}
.supply-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.supply-card .num { font-size: 46px; font-weight: 760; letter-spacing: -0.055em; color: var(--text); line-height: 1; margin-bottom: 14px; }
.supply-card .num::after { content: ""; display: block; width: 28px; height: 3px; margin-top: 14px; border-radius: 99px; background: var(--gradient); }
.supply-card h3 { font-size: 17px; font-weight: 650; margin-bottom: 8px; }
.supply-card p { font-size: 13px; color: var(--text2); line-height: 1.7; }

/* ═══ COOP ═══ */
.coop-section { background: linear-gradient(180deg, #fff 0%, #f5f5f7 100%); }
.coop-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 64px; }
.coop-card {
  padding: 38px 34px; border-radius: 30px;
  background: rgba(255,255,255,0.82); border: 1px solid rgba(0,0,0,0.06);
  box-shadow: var(--shadow-sm); backdrop-filter: blur(16px);
  transition: all 0.24s var(--ease);
}
.coop-card:hover { transform: translateY(-5px); background: #fff; box-shadow: var(--shadow-md); }
.coop-card .step { font-size: 12px; color: var(--orange); font-weight: 750; letter-spacing: 0.12em; margin-bottom: 14px; }
.coop-card h4 { font-size: 21px; font-weight: 650; margin-bottom: 10px; letter-spacing: -0.02em; }
.coop-card p { font-size: 14px; color: var(--text2); line-height: 1.75; }

/* ═══ CTA ═══ */
.cta {
  padding: 132px 0; text-align: center;
  background:
    radial-gradient(ellipse 46% 40% at 50% 50%, rgba(255,149,0,0.12), transparent 72%),
    linear-gradient(180deg, #f5f5f7, #ffffff);
}
.cta h2 {
  font-size: clamp(38px, 6vw, 68px); font-weight: 700;
  letter-spacing: -0.055em; line-height: 1.07; margin-bottom: 20px;
}
.cta p { font-size: 20px; color: var(--text2); max-width: 560px; margin: 0 auto 34px; line-height: 1.65; letter-spacing: -0.02em; }

/* ═══ FOOTER ═══ */
.footer { padding: 40px 0; border-top: 1px solid rgba(0,0,0,0.08); background: #f5f5f7; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.footer-logo { height: 18px; }
.footer-copy { font-size: 12px; color: var(--text3); }
.footer-links { display: flex; gap: 20px; font-size: 12px; color: var(--text3); }
.footer-links a:hover { color: var(--text); }

/* ═══ PAGE HERO ═══ */
.page-hero {
  padding: 132px 0 86px; text-align: center;
  background:
    radial-gradient(ellipse 52% 42% at 50% 24%, rgba(255,255,255,0.98), transparent 70%),
    radial-gradient(ellipse 34% 28% at 50% 62%, rgba(255,149,0,0.10), transparent 72%);
}
.page-hero h1 { font-size: clamp(42px, 6.4vw, 76px); font-weight: 700; letter-spacing: -0.055em; line-height: 1.06; margin-bottom: 18px; }
.page-hero .desc { font-size: 20px; color: var(--text2); max-width: 680px; margin: 0 auto; line-height: 1.68; letter-spacing: -0.02em; }

.article { max-width: 760px; margin: 0 auto; }
.article h2 { font-size: 31px; font-weight: 700; letter-spacing: -0.035em; margin: 56px 0 16px; }
.article p { font-size: 17px; color: var(--text2); line-height: 1.85; margin-bottom: 16px; }
.article blockquote {
  margin: 30px 0; padding: 30px; border-radius: 26px;
  background: #fff; border: 1px solid rgba(0,0,0,0.06); border-left: 4px solid var(--orange);
  box-shadow: var(--shadow-sm); font-size: 17px; color: var(--text2); line-height: 1.85;
}
main > section img[style*="border-radius"] { box-shadow: var(--shadow-lg); border: 1px solid rgba(255,255,255,0.72); background: #fff; }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 1024px) {
  .feature-row, .product-grid, .supply-row { grid-template-columns: repeat(2, 1fr); }
  .coop-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .container { width: min(var(--max), calc(100% - 32px)); }
  .nav-links { display: none; }
  .feature-row, .product-grid, .supply-row { grid-template-columns: 1fr; }
  section { padding: 76px 0; }
  .hero { padding: 112px 0 72px; }
  .hero-buttons { flex-direction: column; align-items: center; margin-bottom: 40px; }
  .btn-primary, .btn-secondary { width: min(260px, 100%); }
  .hero-img, .product-card, .coop-card, .feature-item, .supply-card { border-radius: 24px; }
}

/* ═══ THEME SWITCHER ═══ */
.theme-toggle {
  appearance: none;
  border: 1px solid rgba(0,0,0,0.10);
  background: rgba(255,255,255,0.68);
  color: rgba(29,29,31,0.78);
  border-radius: 980px;
  padding: 5px 12px;
  font: inherit;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.35;
  cursor: pointer;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: all 0.2s var(--ease);
}
.theme-toggle:hover { color: #000; background: #fff; transform: translateY(-1px); }

/* ═══ NIGHT MODE · keep as optional switch, daytime remains default ═══ */
html[data-theme="dark"] {
  --bg: #000000;
  --bg2: #0a0a0a;
  --surface: rgba(20,20,22,0.82);
  --surface2: #161616;
  --border: rgba(255,255,255,0.08);
  --border2: rgba(255,255,255,0.12);
  --text: #f5f5f7;
  --text2: rgba(245,245,247,0.68);
  --text3: rgba(245,245,247,0.45);
  --shadow-sm: 0 8px 24px rgba(0,0,0,0.24);
  --shadow-md: 0 20px 60px rgba(0,0,0,0.34);
  --shadow-lg: 0 36px 90px rgba(0,0,0,0.46);
}
html[data-theme="dark"] body {
  background:
    radial-gradient(circle at 50% 0%, rgba(32,32,36,0.86) 0, rgba(0,0,0,0) 34rem),
    linear-gradient(180deg, #101012 0%, #000 48%, #080808 100%);
}
html[data-theme="dark"] .nav {
  background: rgba(22,22,23,0.72);
  border-bottom-color: rgba(255,255,255,0.08);
}
html[data-theme="dark"] .nav-links { color: rgba(245,245,247,0.72); }
html[data-theme="dark"] .nav-links a:hover { color: #fff; }
html[data-theme="dark"] .theme-toggle {
  border-color: rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.08);
  color: rgba(245,245,247,0.78);
}
html[data-theme="dark"] .theme-toggle:hover { color: #fff; background: rgba(255,255,255,0.14); }
html[data-theme="dark"] .hero,
html[data-theme="dark"] .page-hero {
  background:
    radial-gradient(ellipse 58% 40% at 50% 26%, rgba(255,106,0,0.10), transparent 70%),
    radial-gradient(ellipse 34% 22% at 62% 56%, rgba(122,201,67,0.08), transparent 75%);
}
html[data-theme="dark"] .hero::before { background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0)); }
html[data-theme="dark"] .hero h1 .accent {
  background: linear-gradient(100deg, #f5f5f7 0%, #b8b8bd 38%, #ff9500 72%, #7ac943 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
html[data-theme="dark"] .hero-img,
html[data-theme="dark"] .product-card,
html[data-theme="dark"] .feature-item,
html[data-theme="dark"] .supply-card,
html[data-theme="dark"] .coop-card,
html[data-theme="dark"] .article blockquote {
  background: var(--surface);
  border-color: rgba(255,255,255,0.08);
}
html[data-theme="dark"] .product-section,
html[data-theme="dark"] .coop-section,
html[data-theme="dark"] .cta {
  background: linear-gradient(180deg, #000 0%, #101012 52%, #000 100%);
}
html[data-theme="dark"] .product-card-img { background: #0a0a0a; }
html[data-theme="dark"] .supply-card .num { color: var(--text); }
html[data-theme="dark"] .footer { background: #080808; border-top-color: rgba(255,255,255,0.08); }

@media (max-width: 640px) {
  .theme-toggle { padding: 5px 10px; }
}

/* ═══ STRONG THEME OVERRIDE · 202606021154 ═══ */
html[data-theme="dark"],
body[data-theme="dark"] { color-scheme: dark; }
html[data-theme="dark"] body,
body[data-theme="dark"] {
  color: #f5f5f7 !important;
  background: #000 !important;
}
html[data-theme="dark"] .nav {
  background: rgba(0,0,0,0.82) !important;
  border-bottom: 1px solid rgba(255,255,255,0.14) !important;
}
html[data-theme="dark"] .nav-logo,
body[data-theme="dark"] .nav-logo { filter: brightness(1.15) drop-shadow(0 1px 1px rgba(255,255,255,0.12)); }
html[data-theme="dark"] .hero,
body[data-theme="dark"] .hero,
html[data-theme="dark"] .page-hero,
body[data-theme="dark"] .page-hero {
  background:
    radial-gradient(ellipse 72% 46% at 50% 26%, rgba(255,106,0,0.20), transparent 68%),
    radial-gradient(ellipse 45% 28% at 62% 58%, rgba(111,191,69,0.14), transparent 72%),
    linear-gradient(180deg, #050505 0%, #111114 48%, #000 100%) !important;
}
html[data-theme="dark"] .hero::before { opacity: 0 !important; }
html[data-theme="dark"] .product-section,
body[data-theme="dark"] .product-section,
html[data-theme="dark"] .coop-section,
body[data-theme="dark"] .coop-section,
html[data-theme="dark"] .cta,
body[data-theme="dark"] .cta {
  background: linear-gradient(180deg, #000 0%, #121216 50%, #000 100%) !important;
}
html[data-theme="dark"] section:not(.hero):not(.page-hero):not(.product-section):not(.coop-section):not(.cta),
body[data-theme="dark"] section:not(.hero):not(.page-hero):not(.product-section):not(.coop-section):not(.cta) {
  background: #000 !important;
}
html[data-theme="dark"] .hero-img,
html[data-theme="dark"] .product-card,
html[data-theme="dark"] .feature-item,
html[data-theme="dark"] .supply-card,
html[data-theme="dark"] .coop-card,
html[data-theme="dark"] .article blockquote,
body[data-theme="dark"] .hero-img,
body[data-theme="dark"] .product-card,
body[data-theme="dark"] .feature-item,
body[data-theme="dark"] .supply-card,
body[data-theme="dark"] .coop-card,
body[data-theme="dark"] .article blockquote {
  color: #f5f5f7 !important;
  background: linear-gradient(180deg, rgba(35,35,39,0.96), rgba(18,18,20,0.96)) !important;
  border-color: rgba(255,255,255,0.16) !important;
  box-shadow: 0 24px 70px rgba(0,0,0,0.72) !important;
}
html[data-theme="dark"] .product-card-img,
body[data-theme="dark"] .product-card-img { background: #111 !important; filter: brightness(0.82) contrast(1.08); }
html[data-theme="dark"] h1,
html[data-theme="dark"] h2,
html[data-theme="dark"] h3,
html[data-theme="dark"] h4,
html[data-theme="dark"] .section-title,
body[data-theme="dark"] h1,
body[data-theme="dark"] h2,
body[data-theme="dark"] h3,
body[data-theme="dark"] h4,
body[data-theme="dark"] .section-title { color: #f5f5f7 !important; }
html[data-theme="dark"] p,
html[data-theme="dark"] .hero-desc,
html[data-theme="dark"] .section-desc,
html[data-theme="dark"] .page-hero .desc,
html[data-theme="dark"] .article p,
html[data-theme="dark"] .product-card-body p,
html[data-theme="dark"] .feature-item p,
html[data-theme="dark"] .supply-card p,
html[data-theme="dark"] .coop-card p,
body[data-theme="dark"] p,
body[data-theme="dark"] .hero-desc,
body[data-theme="dark"] .section-desc,
body[data-theme="dark"] .page-hero .desc,
body[data-theme="dark"] .article p,
body[data-theme="dark"] .product-card-body p,
body[data-theme="dark"] .feature-item p,
body[data-theme="dark"] .supply-card p,
body[data-theme="dark"] .coop-card p { color: rgba(245,245,247,0.70) !important; }
html[data-theme="dark"] .theme-toggle,
body[data-theme="dark"] .theme-toggle {
  background: #f5f5f7 !important;
  color: #1d1d1f !important;
  border-color: rgba(255,255,255,0.28) !important;
  box-shadow: 0 8px 24px rgba(255,255,255,0.10) !important;
}
html[data-theme="dark"] .footer,
body[data-theme="dark"] .footer { background: #000 !important; border-top-color: rgba(255,255,255,0.14) !important; }