:root {
  --ink: #1f2428;
  --muted: #66706f;
  --paper: #fffaf2;
  --surface: #ffffff;
  --line: #ded8cc;
  --gold: #c8942c;
  --deep-gold: #8a6122;
  --green: #2f8f40;
  --red: #cf4a2f;
  --yellow: #d7a91f;
  --steel: #7c8588;
  --charcoal: #22201d;
  --shadow: 0 22px 70px rgba(38, 32, 24, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", system-ui, sans-serif;
  background:
    linear-gradient(180deg, rgba(255, 250, 242, 0.92), rgba(247, 248, 246, 1) 42%, #fffaf2 100%),
    #fffaf2;
  line-height: 1.65;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 14px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(31, 36, 40, 0.08);
  background: rgba(255, 250, 242, 0.88);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: #fff;
  background: conic-gradient(from 20deg, var(--green), var(--red), var(--yellow), var(--steel), var(--green));
  font-size: 22px;
  font-weight: 900;
  box-shadow: 0 10px 26px rgba(138, 97, 34, 0.28);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 18px;
  letter-spacing: 0;
}

.brand small {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 30px);
  color: #39413f;
  font-size: 15px;
}

.nav-links a {
  text-decoration: none;
}

.hero-section {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.96fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(34px, 6vw, 76px) clamp(20px, 5vw, 72px) clamp(46px, 7vw, 88px);
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 34%;
  background: linear-gradient(90deg, rgba(47, 143, 64, 0.12), rgba(207, 74, 47, 0.1), rgba(215, 169, 31, 0.18), rgba(124, 133, 136, 0.1));
  filter: blur(40px);
  transform: translateY(50%);
  pointer-events: none;
}

.hero-media {
  position: relative;
  z-index: 1;
  max-width: 520px;
  justify-self: center;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 8px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--deep-gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(42px, 6.2vw, 82px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 24px;
  line-height: 1.24;
}

.hero-copy {
  max-width: 620px;
  color: #3f4745;
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  color: #fff;
  background: var(--charcoal);
  box-shadow: 0 12px 30px rgba(31, 36, 40, 0.18);
}

.button.secondary {
  color: var(--ink);
  border-color: rgba(31, 36, 40, 0.18);
  background: rgba(255, 255, 255, 0.64);
}

.button.dark {
  background: #fff;
  color: var(--charcoal);
}

.button.light {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.42);
  background: transparent;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 520px;
  margin: 34px 0 0;
  overflow: hidden;
  border: 1px solid rgba(31, 36, 40, 0.12);
  border-radius: 8px;
  background: rgba(31, 36, 40, 0.12);
}

.hero-stats div {
  padding: 18px;
  background: rgba(255, 255, 255, 0.62);
}

.hero-stats dt {
  font-size: 28px;
  font-weight: 900;
  line-height: 1;
}

.hero-stats dd {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

section {
  padding: clamp(56px, 8vw, 112px) clamp(20px, 5vw, 72px);
}

.intro-section {
  max-width: 1120px;
  margin: 0 auto;
  padding-top: clamp(54px, 7vw, 94px);
  text-align: center;
}

.intro-section p {
  max-width: 820px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 20px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: end;
  max-width: 1220px;
  margin: 0 auto 34px;
}

.section-heading p {
  max-width: 520px;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 17px;
}

.energy-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.92fr) minmax(360px, 1.08fr);
  gap: 28px;
  max-width: 1220px;
  margin: 0 auto;
  align-items: stretch;
}

.feature-image,
.wide-image,
.proof-image,
.qr-panel {
  margin: 0;
}

.feature-image {
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.feature-image img {
  height: 100%;
  min-height: 480px;
  object-fit: cover;
}

figcaption {
  padding: 12px 16px;
  color: var(--muted);
  font-size: 13px;
  background: rgba(255, 255, 255, 0.84);
}

.energy-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.energy-card,
.process-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 36px rgba(31, 36, 40, 0.08);
}

.energy-card {
  min-height: 230px;
  padding: 24px;
  border-top: 8px solid var(--accent);
}

.energy-card.dynamo {
  --accent: var(--green);
}

.energy-card.blaze {
  --accent: var(--red);
}

.energy-card.tempo {
  --accent: var(--yellow);
}

.energy-card.steel {
  --accent: var(--steel);
}

.energy-tag {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.energy-card p,
.process-grid p,
.method-copy p,
.proof-section p {
  color: var(--muted);
}

.method-section {
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  max-width: 1360px;
  margin: 0 auto;
}

.method-copy {
  max-width: 540px;
}

.check-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  font-weight: 700;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: conic-gradient(var(--green), var(--red), var(--yellow), var(--steel), var(--green));
}

.wide-image,
.proof-image {
  overflow: hidden;
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.process-section {
  background: #f5f7f4;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  max-width: 1220px;
  margin: 0 auto;
}

.process-grid article {
  min-height: 260px;
  padding: 24px;
}

.process-grid span {
  display: block;
  margin-bottom: 24px;
  color: var(--deep-gold);
  font-size: 14px;
  font-weight: 900;
}

.proof-section {
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(460px, 1.28fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  max-width: 1360px;
  margin: 0 auto;
}

.cta-section {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) 240px;
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  margin: clamp(34px, 5vw, 70px) clamp(20px, 5vw, 72px);
  padding: clamp(36px, 6vw, 72px);
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(130deg, rgba(31, 36, 40, 0.94), rgba(70, 57, 38, 0.96)),
    var(--charcoal);
  box-shadow: var(--shadow);
}

.cta-section .section-kicker,
.cta-section p {
  color: rgba(255, 255, 255, 0.74);
}

.cta-copy {
  max-width: 760px;
}

.qr-panel {
  padding: 16px;
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
}

.qr-panel figcaption {
  padding-bottom: 0;
  text-align: center;
  font-weight: 900;
  background: transparent;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid rgba(31, 36, 40, 0.1);
}

.site-footer p {
  margin: 0;
}

@media (max-width: 1040px) {
  .hero-section,
  .energy-layout,
  .method-section,
  .proof-section {
    grid-template-columns: 1fr;
  }

  .hero-media {
    order: 2;
    max-width: 420px;
  }

  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-heading {
    display: block;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
  }

  .nav-links {
    display: none;
  }

  .hero-section {
    min-height: auto;
  }

  .hero-stats,
  .energy-grid,
  .process-grid,
  .cta-section {
    grid-template-columns: 1fr;
  }

  .hero-media {
    justify-self: start;
    max-width: min(100%, 360px);
  }

  .feature-image img {
    min-height: 340px;
  }

  .cta-section {
    margin-inline: 16px;
  }

  .qr-panel {
    max-width: 230px;
  }

  .site-footer {
    display: block;
  }

  .site-footer p + p {
    margin-top: 8px;
  }
}