/* ============================================
   Sumāto IoT Technology - Global Styles
   ============================================ */

:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.6rem);
  --text-3xl: clamp(2.8rem, 4vw, 5.8rem);
  --space-1: .25rem; --space-2: .5rem; --space-3: .75rem; --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem;
  --radius-sm: .375rem; --radius-md: .625rem; --radius-lg: .9rem; --radius-xl: 1.25rem; --radius-full: 9999px;
  --font-display: 'Satoshi', 'Inter', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
  --color-bg: #f4f6f4;
  --color-surface: #ffffff;
  --color-surface-2: #f8fbf8;
  --color-surface-offset: #eef3ef;
  --color-text: #13201a;
  --color-text-muted: #566d61;
  --color-text-faint: #7d9085;
  --color-text-inverse: #edf9f0;
  --color-border: rgba(18, 32, 25, 0.1);
  --color-divider: rgba(18, 32, 25, 0.08);
  --color-primary: #80e89f;
  --color-primary-strong: #153624;
  --color-primary-line: rgba(128, 232, 159, 0.4);
  --shadow-sm: 0 6px 24px rgba(13, 26, 19, 0.06);
  --shadow-md: 0 20px 60px rgba(13, 26, 19, 0.12);
  --content: 1160px;
  --hero-a: #030908;
  --hero-b: #071311;
  --hero-c: #0d1e18;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body { min-height: 100vh; background: var(--color-bg); color: var(--color-text); font: 400 var(--text-base)/1.6 var(--font-body); padding-top: 88px; padding-bottom: 56px; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; border: 0; background: none; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
.skip-link { position: absolute; top: -100px; left: var(--space-4); z-index: 100; background: #fff; color: #000; padding: var(--space-3) var(--space-4); }
.skip-link:focus { top: var(--space-4); }
.container { width: min(100% - 2rem, var(--content)); margin-inline: auto; }

/* ============================================
   HEADER (Fixed)
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background:
    radial-gradient(circle at 16% 25%, rgba(58, 162, 106, 0.24), transparent 30%),
    radial-gradient(circle at 58% 50%, rgba(135, 255, 188, 0.1), transparent 24%),
    linear-gradient(90deg, rgba(2, 8, 7, 0.98) 0%, rgba(5, 16, 14, 0.95) 34%, rgba(5, 18, 16, 0.9) 55%, rgba(2, 8, 7, 0.96) 100%),
    linear-gradient(180deg, var(--hero-b), var(--hero-a));
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(8px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}
.site-header.shrink .header-bar {
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-6) 0;
  transition: padding 0.3s ease;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: clamp(1.55rem, 1.2rem + 1vw, 2rem);
  font-weight: 900;
  letter-spacing: -.04em;
  color: var(--color-text-inverse);
}
.brand-mark {
  width: 11px;
  height: 11px;
  border-radius: 2px;
  background: var(--color-primary);
  box-shadow: 0 0 18px rgba(128, 232, 159, 0.7);
  transform: translateY(-8px);
}
nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--text-sm);
  color: rgba(237,249,240,.84);
}
nav a { color: rgba(237,249,240,.84); }
nav a:hover { color: #fff; }
nav a.active { color: #fff; font-weight: 700; }
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-full);
  padding: 4px;
  background: rgba(255,255,255,.04);
  backdrop-filter: blur(12px);
}
.lang-switch button {
  min-width: 48px;
  min-height: 36px;
  border-radius: var(--radius-full);
  color: rgba(237,249,240,.74);
  padding: 0 .9rem;
  font-size: var(--text-sm);
}
.lang-switch button.active {
  background: rgba(255,255,255,.94);
  color: #09120f;
  font-weight: 700;
}
/* ===== Header CTA 按鈕（白色金屬質感 + 固定寬度） ===== */
.header-cta {
  min-width: 160px;
  min-height: 44px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.03em;
  
  /* ===== 白色金屬質感 ===== */
  background: linear-gradient(180deg, #ffffff 0%, #e8eceb 50%, #d5dbd9 100%);
  color: #1a2a24;
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 
    0 2px 12px rgba(0,0,0,0.10),
    inset 0 1px 0 rgba(255,255,255,0.9),
    inset 0 -2px 0 rgba(0,0,0,0.08);
  text-shadow: 0 1px 0 rgba(255,255,255,0.4);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

/* ===== 金屬光澤 overlay ===== */
.header-cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    ellipse at 30% 20%,
    rgba(255,255,255,0.6) 0%,
    transparent 60%
  );
  pointer-events: none;
  opacity: 0.6;
  transition: opacity 0.4s ease;
}

.header-cta:hover::before {
  opacity: 1;
}

/* ===== 懸浮效果 ===== */
.header-cta:hover {
  background: linear-gradient(180deg, #ffffff 0%, #f0f4f2 50%, #dde3e1 100%);
  box-shadow: 
    0 4px 20px rgba(0,0,0,0.15),
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -2px 0 rgba(0,0,0,0.05);
  transform: translateY(-2px) scale(1.02);
}

/* ===== 點擊效果 ===== */
.header-cta:active {
  transform: translateY(1px) scale(0.97);
  box-shadow: 
    0 1px 6px rgba(0,0,0,0.10),
    inset 0 1px 0 rgba(255,255,255,0.4),
    inset 0 -1px 0 rgba(0,0,0,0.1);
  transition-duration: 0.05s;
}

/* ===== 暗色主題下保持白色金屬 ===== */
[data-theme="dark"] .header-cta {
  background: linear-gradient(180deg, #f5f8f7 0%, #e0e6e4 50%, #ccd3d0 100%);
  border-color: rgba(255,255,255,0.4);
  color: #0b1411;
  box-shadow: 
    0 2px 12px rgba(0,0,0,0.25),
    inset 0 1px 0 rgba(255,255,255,0.9),
    inset 0 -2px 0 rgba(0,0,0,0.08);
}

[data-theme="dark"] .header-cta:hover {
  background: linear-gradient(180deg, #ffffff 0%, #e8eeec 50%, #d5ddd9 100%);
}

/* ============================================
   FOOTER (Fixed) - 精簡版
   ============================================ */
#site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(7, 17, 14, 0.92);
  backdrop-filter: blur(8px);
  color: rgba(237,249,240,.68);
  padding: var(--space-2) 0;
  border-top: 1px solid rgba(255,255,255,.06);
  min-height: 44px;
}

/* ============================================
   HERO (首頁)
   ============================================ */
.hero {
  position: relative;
  overflow: hidden;
  color: var(--color-text-inverse);
  background:
    radial-gradient(circle at 16% 25%, rgba(58, 162, 106, 0.24), transparent 30%),
    radial-gradient(circle at 58% 50%, rgba(135, 255, 188, 0.1), transparent 24%),
    linear-gradient(90deg, rgba(2, 8, 7, 0.98) 0%, rgba(5, 16, 14, 0.95) 34%, rgba(5, 18, 16, 0.9) 55%, rgba(2, 8, 7, 0.96) 100%),
    linear-gradient(180deg, var(--hero-b), var(--hero-a));
  min-height: calc(100vh - 88px - 56px);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, rgba(128, 232, 159, 0.04) 0, rgba(128, 232, 159, 0.04) 1px, transparent 1px, transparent 92px),
    repeating-linear-gradient(0deg, rgba(128, 232, 159, 0.025) 0, rgba(128, 232, 159, 0.025) 1px, transparent 1px, transparent 82px);
  pointer-events: none;
  opacity: .52;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.02), transparent 22%), radial-gradient(circle at 23% 72%, rgba(64, 164, 110, .18), transparent 24%);
  pointer-events: none;
}
.wave-field {
  position: absolute;
  inset: auto 0 0 0;
  height: 36%;
  opacity: .8;
  pointer-events: none;
}
.wave-field svg { width: 100%; height: 100%; }
.wave-field path { fill: none; stroke: rgba(128, 232, 159, 0.22); stroke-width: 1.2; }
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(480px, .92fr) minmax(540px, 1.08fr);
  gap: var(--space-10);
  align-items: center;
  min-height: calc(100vh - 88px - 56px);
  padding: var(--space-8) 0 var(--space-16);
}
.hero-copy { max-width: 580px; min-height: 500px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: var(--text-xs);
  color: rgba(128,232,159,.95);
  margin-bottom: var(--space-6);
}
.eyebrow::before {
  content: "";
  width: 48px;
  height: 1px;
  background: var(--color-primary-line);
}
.hero-copy h1 {
  font-size: clamp(3.7rem, 7vw, 6.8rem);
  line-height: .94;
  letter-spacing: -.055em;
  font-weight: 900;
  min-height: 8rem;
}
.hero-subtitle {
  display: block;
  font-size: clamp(1.9rem, 3.8vw, 3.5rem);
  margin-top: var(--space-3);
  letter-spacing: -.03em;
  min-height: 4.8rem; 
}
.hero-copy p {
  color: rgba(237,249,240,.74);
  max-width: 34ch;
  margin: var(--space-6) 0 var(--space-8);
  font-size: clamp(1rem, 1rem + .18vw, 1.18rem);
  min-height: 7.5rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  min-height: 56px;
}
.btn-primary, .btn-secondary {
  min-height: 48px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 700;
}
.btn-primary {
  background: rgba(16, 35, 25, 0.9);
  border: 1px solid rgba(128,232,159,.38);
  color: #edf9f0;
}
.btn-primary:hover {
  background: rgba(30, 55, 45, 0.95);
  border-color: rgba(128,232,159,.6);
}
.btn-secondary {
  border: 1px solid rgba(255,255,255,.14);
  color: rgba(237,249,240,.84);
}
.btn-secondary:hover {
  border-color: rgba(255,255,255,.3);
  color: #fff;
}
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: var(--space-4);
  margin-top: var(--space-10);
  max-width: 560px;
  min-height: 120px; 
}
.metric {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(10px);
  min-height: 170px;
  display: flex;
  flex-direction: column;
}
.metric strong {
  display: block;
  font-size: var(--text-lg);
  letter-spacing: -.02em;
  min-height: 2.2rem;
}
.metric span {
  display: block;
  margin-top: .1rem;
  color: rgba(237,249,240,.66);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: .08em;
  min-height: 3.6rem;
}
.radar-wrap {
  display: grid;
  place-items: center;
  min-height: 700px;
  min-width: 540px; 
}
.radar-panel {
  position: relative;
  width: min(100%, 720px);
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  background:
    radial-gradient(circle at center, rgba(128,232,159,.22) 0%, rgba(37,101,64,.2) 18%, rgba(7,17,14,.12) 40%, rgba(0,0,0,0) 62%),
    repeating-radial-gradient(circle at center, rgba(128,232,159,.16) 0 1px, transparent 1px 72px),
    repeating-conic-gradient(from 0deg, rgba(255,255,255,.028) 0deg 1deg, transparent 1deg 12deg),
    radial-gradient(circle at center, rgba(6,17,14,.96) 0%, rgba(3,11,9,.92) 72%, rgba(2,6,5,0) 73%);
  border: 1px solid rgba(169,255,199,.16);
  box-shadow: inset 0 0 90px rgba(128,232,159,.06), 0 0 120px rgba(26, 96, 62, .18);
}
.radar-panel::before {
  content: "";
  position: absolute;
  inset: 50%;
  transform: translate(-50%,-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ebffef;
  box-shadow: 0 0 20px rgba(169,255,199,.85);
  z-index: 5;
}
.radar-panel::after {
  content: "";
  position: absolute;
  inset: 11%;
  border-radius: 50%;
  border: 1px solid rgba(169,255,199,.08);
}
.radar-sweep {
  position: absolute;
  inset: -8%;
  background: conic-gradient(from 212deg, transparent 0deg, transparent 300deg, rgba(179,255,206,.12) 322deg, rgba(196,255,214,.84) 344deg, rgba(128,232,159,.18) 360deg);
  filter: blur(2px);
  animation: rotateSweep 8s linear infinite;
  mix-blend-mode: screen;
}
.radar-line {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 47%;
  height: 2px;
  transform-origin: 0 50%;
  background: linear-gradient(90deg, rgba(196,255,214,.94), rgba(196,255,214,.04));
  box-shadow: 0 0 12px rgba(196,255,214,.6);
  animation: rotateLine 8s linear infinite;
}
.radar-x, .radar-y {
  position: absolute;
  background: rgba(255,255,255,.08);
}
.radar-x { left: 6%; right: 6%; top: 50%; height: 1px; }
.radar-y { top: 6%; bottom: 6%; left: 50%; width: 1px; }
.ping {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #c8ffd7;
  box-shadow: 0 0 0 0 rgba(200,255,215,.5), 0 0 16px rgba(200,255,215,.7);
  animation: pulse 2.8s ease-out infinite;
}
.p1 { top: 21%; left: 62%; animation-delay: .2s; }
.p2 { top: 66%; left: 73%; animation-delay: 1.1s; }
.p3 { top: 32%; left: 24%; animation-delay: 2s; }
.p4 { top: 75%; left: 38%; animation-delay: .8s; }
.radar-label {
  position: absolute;
  color: rgba(237,249,240,.74);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: .08em;
}
.radar-label strong {
  display: block;
  color: #f2fff5;
  font-size: var(--text-sm);
  text-transform: none;
  letter-spacing: -.01em;
}
.label-a { top: 14%; left: 56%; }
.label-b { top: 46%; left: 8%; }
.label-c { top: 45%; right: 8%; text-align: right; }
.label-d { bottom: 10%; left: 45%; text-align: center; }

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: clamp(var(--space-12), 7vw, var(--space-20)) 0;
}
.section-light {
  background: linear-gradient(180deg, #f4f6f4 0%, #ffffff 100%);
}
.section-white {
  background: #ffffff;
}
.section-dark {
  background: #06110f;
  color: var(--color-text-inverse);
  position: relative;
  overflow: hidden;
}
.section-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(128,232,159,.16), transparent 28%), radial-gradient(circle at 22% 82%, rgba(64,164,110,.12), transparent 24%);
  pointer-events: none;
}
.section-head {
  display: grid;
  grid-template-columns: 1.6fr 0.4fr;
  gap: var(--space-10);
  align-items: end;
  margin-bottom: var(--space-10);
  position: relative;
  z-index: 2;
}
.section-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: .18em;
  color: #4f865f;
  margin-bottom: var(--space-3);
  font-weight: 700;
}
.section-dark .section-label { color: rgba(128,232,159,.95); }
.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -.04em;
  font-weight: 900;
  max-width: 16ch;
  white-space: nowrap;
}
.section-intro {
  color: var(--color-text-muted);
  max-width: 58ch;
}
.section-dark .section-intro { color: rgba(237,249,240,.74); }

/* ============================================
   FEATURE GRID
   ============================================ */
.feature-grid {
  display: grid;
  grid-template-columns: 1.05fr repeat(4, 1fr);
  gap: var(--space-5);
}
.intro-card, .feature-card, .about-panel, .solution-card, .contact-panel, .contact-info {
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}
.intro-card, .feature-card, .about-panel, .contact-panel {
  background: rgba(255,255,255,.9);
  border: 1px solid var(--color-border);
}
.intro-card { background: linear-gradient(180deg, #fbfcfb, #f3f7f4); }
.feature-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-height: 250px;
}
.feature-icon {
  width: 48px;
  height: 48px;
  color: #457d57;
}
.feature-card h3, .intro-card h3, .about-panel h3, .solution-card h3, .contact-panel h3, .contact-info h3 {
  font-size: 1.18rem;
  letter-spacing: -.02em;
}
.feature-card p, .intro-card p, .about-panel p, .contact-panel p {
  color: var(--color-text-muted);
}
.arrow-link {
  margin-top: auto;
  color: #4f865f;
  font-weight: 700;
  font-size: var(--text-sm);
}
.arrow-link:hover {
  color: #2a5c3a;
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: var(--space-5);
}
.about-panel ul {
  margin-top: var(--space-5);
  display: grid;
  gap: var(--space-3);
  list-style: none;
}
.about-panel li {
  position: relative;
  padding-left: 1.15rem;
  color: var(--color-text-muted);
}
.about-panel li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: #4f865f;
}

/* ============================================
   SOLUTIONS
   ============================================ */
.solution-grid-white {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: var(--space-5);
}
.solution-card-white {
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  background: rgba(255,255,255,.9);
  border: 1px solid var(--color-border);
  min-height: 220px;
}
.solution-card-white small {
  display: inline-flex;
  margin-bottom: var(--space-4);
  padding: .35rem .7rem;
  border-radius: var(--radius-full);
  background: rgba(79, 134, 95, 0.12);
  color: #4f865f;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 700;
}
.solution-card-white p {
  color: var(--color-text-muted);
}

/* ============================================
   CONTACT
   ============================================ */
.contact-box {
  display: grid;
  grid-template-columns: 1fr .95fr;
  gap: var(--space-8);
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: var(--space-4);
  margin-top: var(--space-6);
}
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field.full { grid-column: 1 / -1; }
label { font-size: var(--text-sm); font-weight: 700; }
input, textarea {
  width: 100%;
  min-height: 48px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: #fbfcfb;
  padding: .85rem 1rem;
  color: var(--color-text);
}
input:focus, textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: transparent;
}
textarea { min-height: 160px; resize: vertical; }
.submit-btn {
  margin-top: var(--space-5);
  min-height: 48px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-md);
  background: #11271c;
  color: #effaf2;
  font-weight: 700;
}
.submit-btn:hover {
  background: #1a3a2a;
}
.contact-info {
  background: linear-gradient(180deg, #0b1714, #10211b);
  color: var(--color-text-inverse);
  border: 1px solid rgba(255,255,255,.08);
}
.info-list {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-6);
}
.info-block span {
  display: block;
  color: rgba(237,249,240,.62);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: var(--space-2);
}
.info-block a, .info-block p { color: #f2fff6; }
.info-block a:hover { color: #ffffff; }
.wa-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 10px 16px;
  border-radius: 9999px;
  background: #25D366 !important;
  color: #ffffff !important;
  font-weight: 600;
  border: none;
  transition: all 0.2s ease;
}
.wa-btn:hover {
  background: #1da851 !important;
  transform: scale(1.02);
}
.wa-btn svg {
  fill: #ffffff !important;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes rotateSweep {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes rotateLine {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(200,255,215,.5), 0 0 16px rgba(200,255,215,.7); }
  70% { box-shadow: 0 0 0 18px rgba(200,255,215,0), 0 0 18px rgba(200,255,215,.2); }
  100% { box-shadow: 0 0 0 0 rgba(200,255,215,0), 0 0 16px rgba(200,255,215,.1); }
}

/* ============================================
   HAMBURGER MENU (Mobile)
   ============================================ */

/* Hamburger 按鈕 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 4px;
  z-index: 1001;
  margin-left: var(--space-2);
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: rgba(237,249,240,0.9);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ===== 手機版導航（滑出選單） ===== */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6) 0 var(--space-8);
  background: rgba(7, 17, 14, 0.98);
  backdrop-filter: blur(12px);
  border-top: 1px solid rgba(255,255,255,0.06);
  margin: 0 calc(-1 * var(--space-4));
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  transition: all 0.3s ease;
}

.mobile-nav.open {
  display: flex;
  animation: slideDown 0.3s ease;
}

.mobile-nav a {
  color: rgba(237,249,240,0.85);
  font-size: var(--text-lg);
  font-weight: 500;
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color 0.2s ease;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: #ffffff;
}

.mobile-nav a:last-child {
  border-bottom: none;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1100px) {
  .hero { min-height: auto; }
  nav { display: none; }
  .hero-grid, .section-head, .feature-grid, .about-grid, .solution-grid-white, .contact-box {
    grid-template-columns: 1fr;
  }
  .radar-wrap { min-height: 420px; min-width: auto; }
  .hero-grid { min-height: auto; }
}

@media (max-width: 1100px) {
  .desktop-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    margin: 0 calc(-1 * var(--space-4));
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
}

@media (min-width: 1101px) {
  .mobile-nav {
    display: none !important;
  }
}

/* ===== 手機版 Header 排列修正 ===== */
@media (max-width: 720px) {
  .header-bar {
    flex-wrap: wrap;
    padding: var(--space-3) 0;
  }
  
  .header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-left: auto;
  }
  
  .hamburger {
    order: 10;
    margin-left: var(--space-2);
  }
  
  .lang-switch {
    order: 1;
  }
  
  .header-cta {
    display: none !important;
  }
  
  .hamburger {
    order: 3;
  }
}

/* 手機版細微調整 */
@media (max-width: 720px) {
  .hamburger span {
    width: 22px;
    height: 2px;
  }
  .hamburger.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .hamburger.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
}

/* ============================================
   MOBILE FULL OPTIMIZATION (720px)
   ============================================ */
@media (max-width: 720px) {
  body { 
    padding-top: 64px; 
    padding-bottom: 48px; 
    background: #030908;
  }
  
  .container {
    width: min(100% - 1rem, var(--content));
  }

  .header-bar {
    padding: var(--space-2) 0;
    gap: var(--space-3);
    flex-wrap: wrap;
  }
  
  .brand {
    font-size: clamp(1.2rem, 4vw, 1.5rem);
  }
  
  .brand-mark {
    width: 8px;
    height: 8px;
    transform: translateY(-4px);
  }
  
  .header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-left: auto;
  }
  
  .lang-switch button {
    min-width: 32px;
    min-height: 28px;
    font-size: 0.7rem;
    padding: 0 0.5rem;
  }
  
  .header-cta {
    display: none !important;
  }
  
  .hamburger {
    order: 10;
    margin-left: var(--space-1);
    padding: 4px 2px;
    gap: 4px;
  }
  
  .hamburger span {
    width: 18px;
    height: 2px;
  }
  .hamburger.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .hamburger.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .mobile-nav a {
    font-size: var(--text-base);
    padding: var(--space-2) 0;
  }

  .hero {
    min-height: calc(100vh - 64px);  /* 減去 Header 高度 */
    padding-top: var(--space-2);
    padding-bottom: var(--space-4);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  
  .hero-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-2) 0 var(--space-4);
    min-height: auto;
    width: 100%;
  }
  
  .hero-copy {
    max-width: 100%;
    min-height: auto;
    padding: 0;
    order: 1;
    width: 100%;
  }

  /* ✅ 手機版隱藏雷達 */
  .radar-wrap {
    display: none !important;
  }
  
  .eyebrow {
    font-size: 0.6rem;
    margin-bottom: var(--space-3);
    justify-content: center;
  }
  
  .eyebrow::before {
    width: 24px;
  }
  
  .hero-copy h1 {
    font-size: clamp(2.2rem, 10vw, 3rem);
    min-height: auto;
    text-align: center;
  }
  
  .hero-subtitle {
    font-size: clamp(1rem, 4vw, 1.4rem);
    min-height: auto;
    text-align: center;
    margin-top: var(--space-1);
  }
  
  .hero-copy p {
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    min-height: auto;
    margin: var(--space-3) auto;
    max-width: 100%;
    text-align: center;
    padding: 0 var(--space-2);
  }
  
  .hero-actions {
    justify-content: center;
    min-height: auto;
    gap: var(--space-2);
  }
  
  .btn-primary, .btn-secondary {
    min-height: 36px;
    padding: 0 var(--space-4);
    font-size: var(--text-xs);
    gap: var(--space-2);
  }

  .hero-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
    max-width: 100%;
    min-height: auto;
    margin-top: var(--space-4);
  }
  
  .metric {
    min-height: 80px;
    padding: var(--space-2);
    border-radius: var(--radius-md);
  }
  
  .metric strong {
    font-size: var(--text-sm);
    min-height: auto;
  }
  
  .metric span {
    font-size: 0.55rem;
    min-height: auto;
    text-transform: none;
    letter-spacing: 0.04em;
  }

    /* ===== Footer（跟隨內容） ===== */
  #site-footer {
    position: fixed;
    margin-top: 0;
    padding: var(--space-3) 0;
    min-height: auto;
    background: rgba(7, 17, 14, 1);
  }

  .footer-row {
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    text-align: center;
    font-size: var(--text-xs);
  }

  .section {
    padding: var(--space-6) 0;
  }
  
  .section-head {
    grid-template-columns: 1fr;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
  }
  
  .section-title {
    font-size: clamp(1.2rem, 4.5vw, 1.6rem) !important;
    max-width: 100%;
    white-space: normal;
    line-height: 1.2;
  }
  
  .section-intro {
    font-size: var(--text-sm);
    max-width: 100%;
  }
  
  .section-label {
    font-size: 0.6rem;
  }

  .feature-grid,
  .about-grid,
  .solution-grid {
    grid-template-columns: 1fr !important;
    gap: var(--space-3);
  }
  
  .feature-card,
  .about-panel,
  .solution-card,
  .contact-panel,
  .contact-info {
    padding: var(--space-4) !important;
    min-height: auto;
  }
  
  .feature-card h3,
  .about-panel h3,
  .solution-card h3,
  .contact-panel h3 {
    font-size: 1rem;
  }
  
  .feature-card p,
  .about-panel p,
  .solution-card p {
    font-size: var(--text-sm);
  }
  
  .feature-icon {
    width: 32px;
    height: 32px;
  }

  .category-block {
    margin-top: var(--space-4);
  }
  
  .category-header {
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
  }
  
  .category-header h3 {
    font-size: 1.1rem;
  }
  
  .category-header .badge {
    font-size: 0.55rem;
    padding: 0.1rem 0.5rem;
    margin-left: 0;
  }
  
  .category-header .category-icon {
    width: 24px;
    height: 24px;
  }
  
  .solution-card .card-icon {
    width: 28px;
    height: 28px;
  }
  
  .solution-card h4 {
    font-size: 0.95rem;
    min-height: auto;
  }

  .contact-box {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .form-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  
  input, textarea {
    min-height: 36px;
    font-size: var(--text-sm);
    padding: 0.5rem 0.7rem;
  }
  
  textarea {
    min-height: 100px;
  }
  
  .submit-btn {
    min-height: 36px;
    font-size: var(--text-sm);
  }
  
  .contact-info-grid {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }
  
  .contact-info-grid .label {
    border-bottom: none;
    padding-bottom: 0;
  }
  
  .contact-info-grid .value {
    border-bottom: 1px solid rgba(255,255,255,0.06);
    padding-top: 0;
  }
  
  .wa-btn-grid {
    padding: 6px 12px;
    font-size: var(--text-xs);
  }
  .wa-btn-grid svg {
    width: 14px;
    height: 14px;
  }

  .footer-row {
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    text-align: center;
    font-size: var(--text-xs);
  }
  
  #site-footer {
    padding: var(--space-2) 0;
    min-height: 36px;
  }

  .lang-switch {
    order: 1;
  }
  .header-cta {
    order: 2;
  }
  .hamburger {
    order: 3;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}