/* Twinco landing page — 2026 refresh */
:root {
  --bg: #050c18;
  --bg-soft: #081222;
  --surface: #0b1729;
  --surface-2: #0e1d33;
  --surface-3: #122641;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f7ff;
  --muted: #9aaacc;
  --muted-2: #7385a8;
  --blue: #38c7ff;
  --blue-2: #79dcff;
  --green: #06c755;
  --violet: #9a7bff;
  --gold: #f5cc7b;
  /* 系統中文字體排在 webfont 之後，讓字型還沒載入時就有正確的中文字形可用 */
  --font: 'Noto Sans TC', 'PingFang TC', 'Microsoft JhengHei', 'Hiragino Sans TC',
          -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --content: 1160px;
  --radius: 28px;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 94px; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--text);
  background: var(--bg);
  font-family: var(--font);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, summary { font: inherit; }

.skip-link {
  position: fixed;
  left: 18px;
  top: 12px;
  z-index: 1000;
  padding: 10px 16px;
  border-radius: 10px;
  color: #04130a;
  background: #fff;
  transform: translateY(-160%);
  transition: transform 0.2s;
}
.skip-link:focus { transform: none; }

.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.nav.scrolled {
  border-color: var(--line);
  background: rgba(5, 12, 24, 0.86);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.nav-inner {
  width: min(calc(100% - 40px), var(--content));
  min-height: 82px;
  margin: auto;
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-logo img { width: 48px; height: 48px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--text); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  transition: transform 0.2s var(--ease), box-shadow 0.2s, background 0.2s, border-color 0.2s;
}
.button:hover { transform: translateY(-2px); }
.button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(56, 199, 255, 0.62);
  outline-offset: 4px;
}
.button--line {
  color: #fff;
  background: var(--green);
  box-shadow: 0 12px 32px rgba(6, 199, 85, 0.22);
}
.button--line:hover { background: #09b951; box-shadow: 0 16px 38px rgba(6, 199, 85, 0.3); }
.button--ghost, .button--outline {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
}
.button--ghost:hover, .button--outline:hover { border-color: rgba(56, 199, 255, 0.48); background: rgba(56, 199, 255, 0.08); }
.button--large { min-height: 56px; padding-inline: 28px; }
.button--nav { min-height: 42px; padding-inline: 18px; font-size: 0.84rem; }

.hero {
  position: relative;
  min-height: min(900px, 100svh);
  display: grid;
  align-items: center;
  padding: 132px 0 72px;
  overflow: hidden;
  background:
    radial-gradient(circle at 72% 42%, rgba(56, 199, 255, 0.11), transparent 33%),
    radial-gradient(circle at 84% 70%, rgba(154, 123, 255, 0.13), transparent 30%),
    linear-gradient(180deg, #050c18 0%, #071020 100%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image: radial-gradient(rgba(91, 192, 255, 0.14) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(to bottom, transparent 6%, #000 35%, transparent 93%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 6%, #000 35%, transparent 93%);
}
.hero-inner {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 40px), var(--content));
  margin: auto;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(500px, 1.1fr);
  align-items: center;
  gap: clamp(34px, 5vw, 76px);
}
.eyebrow {
  margin: 0 0 18px;
  color: var(--blue-2);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.eyebrow-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px rgba(6, 199, 85, 0.75);
}
.hero h1 {
  margin: 0;
  max-width: 680px;
  font-size: clamp(3rem, 5.6vw, 5.2rem);
  font-weight: 900;
  line-height: 1.13;
  letter-spacing: -0.06em;
}
.hero h1 span {
  color: transparent;
  background: linear-gradient(100deg, #fff 0%, var(--blue-2) 38%, #7ef1d0 100%);
  -webkit-background-clip: text;
  background-clip: text;
}
.hero-lead {
  max-width: 620px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.trust-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 24px 0 0;
  padding: 0;
  color: var(--muted-2);
  list-style: none;
  font-size: 0.82rem;
}
.trust-pills li::before { content: '✓'; margin-right: 7px; color: #65dc9b; }
.hero-visual {
  position: relative;
  min-width: 0;
  filter: drop-shadow(0 36px 70px rgba(0, 0, 0, 0.34));
}
.hero-visual > img {
  width: 100%;
  aspect-ratio: 1.56;
  border: 1px solid rgba(121, 220, 255, 0.16);
  border-radius: 34px;
  object-fit: cover;
  object-position: center;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
}
.brief-card {
  position: absolute;
  left: -36px;
  bottom: -72px;
  width: min(310px, 56%);
  padding: 18px;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 20px;
  background: rgba(9, 22, 39, 0.88);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.brief-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 10px; }
.brief-time { color: var(--blue-2); font-size: 0.78rem; font-weight: 800; }
.brief-status { color: #80dfa8; font-size: 0.67rem; }
.brief-card > strong { display: block; margin-bottom: 12px; font-size: 1rem; }
.brief-row { display: grid; grid-template-columns: 28px 1fr; gap: 8px; padding: 9px 0; border-top: 1px solid var(--line); font-size: 0.75rem; }
.brief-row > span:first-child { color: var(--blue); font-size: 1rem; }
.brief-row small { color: var(--muted-2); }
.scroll-cue {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 24px;
  color: var(--muted-2);
  font-size: 0.72rem;
  text-decoration: none;
  transform: translateX(-50%);
}
.scroll-cue span { display: inline-block; margin-left: 7px; color: var(--blue); animation: nudge 1.8s ease-in-out infinite; }
@keyframes nudge { 50% { transform: translateY(5px); } }

.section { padding: clamp(78px, 9vw, 132px) 0; border-top: 1px solid var(--line); }
.section-inner { width: min(calc(100% - 40px), var(--content)); margin: auto; }
.section-heading { max-width: 720px; margin-bottom: clamp(38px, 5vw, 64px); }
.section-heading h2, .trust-layout h2, .cta h2, .faq-heading h2 {
  margin: 0;
  font-size: clamp(2.15rem, 4.4vw, 3.8rem);
  line-height: 1.2;
  letter-spacing: -0.045em;
}
.section-heading > p:last-child, .trust-layout > div > p:not(.eyebrow), .cta-copy > p:not(.eyebrow), .faq-heading > p:not(.eyebrow) {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.03rem;
}
.section--scenarios { background: linear-gradient(180deg, #071020 0%, #081424 100%); }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scenario-card {
  position: relative;
  min-height: 330px;
  padding: 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(18, 38, 65, 0.92), rgba(9, 20, 36, 0.95));
}
.scenario-card::after {
  content: '';
  position: absolute;
  right: -45px;
  bottom: -60px;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56,199,255,0.18), transparent 70%);
}
.scenario-card:nth-child(2)::after { background: radial-gradient(circle, rgba(6,199,85,0.15), transparent 70%); }
.scenario-card:nth-child(3)::after { background: radial-gradient(circle, rgba(154,123,255,0.18), transparent 70%); }
.scenario-number { position: absolute; right: 24px; top: 22px; color: rgba(255,255,255,0.13); font-size: 2rem; font-weight: 900; }
.scenario-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  margin-bottom: 34px;
  border: 1px solid rgba(121,220,255,0.22);
  border-radius: 16px;
  color: var(--blue-2);
  background: rgba(56,199,255,0.08);
  font-size: 1.35rem;
}
.scenario-time { margin: 0 0 6px; color: var(--blue-2); font-size: 0.76rem; font-weight: 700; letter-spacing: 0.08em; }
.scenario-card h3 { margin: 0; font-size: 1.35rem; }
.scenario-card > p:last-child { margin: 14px 0 0; color: var(--muted); font-size: 0.92rem; }

.feature-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 1.1fr);
  align-items: center;
  gap: clamp(38px, 6vw, 88px);
  min-height: 600px;
  margin-top: 28px;
  padding: clamp(30px, 5vw, 70px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(14,29,51,0.98), rgba(7,17,31,0.98));
  box-shadow: var(--shadow);
}
.feature-panel--assistant { grid-template-columns: minmax(440px, 1.05fr) minmax(0, 0.95fr); }
.feature-panel--fortune {
  grid-template-columns: minmax(0, 0.9fr) minmax(440px, 1.1fr);
  background: linear-gradient(135deg, rgba(25,24,59,0.95), rgba(7,19,38,0.98));
}
.feature-kicker {
  display: inline-block;
  margin-bottom: 18px;
  padding: 6px 12px;
  border: 1px solid rgba(56,199,255,0.25);
  border-radius: 999px;
  color: var(--blue-2);
  background: rgba(56,199,255,0.08);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.feature-kicker--fortune { border-color: rgba(245,204,123,0.3); color: var(--gold); background: rgba(245,204,123,0.07); }
.feature-copy h3 { margin: 0; font-size: clamp(2rem, 3.7vw, 3.35rem); line-height: 1.22; letter-spacing: -0.045em; }
.feature-copy > p:not(.fine-print) { margin: 20px 0 0; color: var(--muted); }
.check-list { display: grid; gap: 12px; margin: 26px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 28px; color: #cbd7ee; font-size: 0.9rem; }
.check-list li::before { content: '✓'; position: absolute; left: 0; color: #72e5a5; font-weight: 800; }
.fine-print { margin: 24px 0 0; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted-2); font-size: 0.73rem; }

.feature-art {
  position: relative;
  width: 100%;
  max-width: 520px;
  margin: auto;
}
.feature-art::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid rgba(121, 220, 255, 0.16);
  border-radius: 26px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.025);
}
.feature-art > img {
  width: 100%;
  aspect-ratio: 3 / 2;
  border-radius: 26px;
  object-fit: cover;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.34);
}
.feature-art--automation { filter: drop-shadow(0 24px 44px rgba(19, 146, 196, 0.08)); }
.feature-art--context { filter: drop-shadow(0 24px 44px rgba(115, 85, 220, 0.1)); }
.capability-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-top: 26px; }
.capability-grid span { padding: 11px 13px; border: 1px solid var(--line); border-radius: 12px; color: #c7d3e8; background: rgba(255,255,255,0.035); font-size: 0.77rem; }
.capability-grid span::before { content: '✦'; margin-right: 7px; color: var(--blue); }

.fortune-visual { position: relative; }
.fortune-visual > img { width: 100%; border: 1px solid rgba(255,255,255,0.12); border-radius: 26px; box-shadow: 0 30px 70px rgba(0,0,0,0.36); }
.fortune-card { position: absolute; left: -28px; right: 28px; bottom: -24px; display: grid; gap: 6px; padding: 18px 20px; border: 1px solid rgba(255,255,255,0.17); border-radius: 18px; background: rgba(12,21,45,0.88); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.fortune-card span { color: var(--gold); font-size: 0.7rem; font-weight: 700; }
.fortune-card strong { font-size: 0.9rem; }
.fortune-card small { color: var(--muted-2); font-size: 0.63rem; }

.section--how { background: linear-gradient(180deg, #081424, #071020); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.step { position: relative; min-height: 290px; padding: 30px; border: 1px solid var(--line); border-radius: 22px; background: rgba(255,255,255,0.025); }
.step:not(:last-child)::after { content: '→'; position: absolute; right: -22px; top: 75px; z-index: 2; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; color: var(--blue); background: #081424; }
.step-number { position: absolute; top: 24px; right: 24px; color: rgba(255,255,255,0.12); font-size: 1.8rem; font-weight: 900; }
.step-icon { width: 62px; height: 62px; display: grid; place-items: center; margin-bottom: 30px; border-radius: 18px; color: #fff; background: linear-gradient(135deg, rgba(6,199,85,0.9), rgba(28,165,105,0.9)); font-size: 0.72rem; font-weight: 900; }
.step:nth-child(2) .step-icon { background: linear-gradient(135deg, #2e84dd, #6f79e8); font-size: 1.35rem; }
.step:nth-child(3) .step-icon { background: linear-gradient(135deg, #7554d2, #a476e8); font-size: 1.4rem; }
.step h3 { margin: 0; font-size: 1.25rem; }
.step p { margin: 12px 0 0; color: var(--muted); font-size: 0.87rem; }

.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); align-items: stretch; gap: 18px; }
.plan-card { position: relative; display: flex; flex-direction: column; padding: 32px; border: 1px solid var(--line); border-radius: 24px; background: linear-gradient(160deg, rgba(18,38,65,0.78), rgba(8,18,33,0.92)); }
.plan-card--featured { border-color: rgba(56,199,255,0.42); box-shadow: 0 20px 60px rgba(26,131,180,0.14); transform: translateY(-10px); }
.popular-badge { position: absolute; right: 18px; top: 18px; padding: 5px 10px; border-radius: 999px; color: var(--blue-2); background: rgba(56,199,255,0.1); font-size: 0.62rem; font-weight: 700; }
.plan-head { display: grid; gap: 2px; }
.plan-head span { color: var(--blue-2); font-size: 0.73rem; font-weight: 800; letter-spacing: 0.12em; }
.plan-head strong { font-size: 1.55rem; }
.plan-card > p { min-height: 54px; margin: 14px 0 0; color: var(--muted); font-size: 0.84rem; }
.plan-card ul { display: grid; gap: 14px; margin: 26px 0 30px; padding: 24px 0; border-block: 1px solid var(--line); list-style: none; color: #cbd7eb; font-size: 0.86rem; }
.plan-card li { display: flex; align-items: center; gap: 9px; }
.plan-card li strong { color: #fff; font-size: 1.1rem; }
.plan-yes { color: #70e7a5; font-weight: 800; }
.plan-no { color: var(--muted-2); }
.plan-card .button { width: 100%; margin-top: auto; }
.plan-note { max-width: 780px; margin: 30px auto 0; color: var(--muted-2); font-size: 0.75rem; text-align: center; }

.section--trust { background: linear-gradient(135deg, rgba(9,29,41,0.95), rgba(9,19,37,0.98)); }
.trust-layout { display: grid; grid-template-columns: 1fr 0.82fr; gap: clamp(42px, 8vw, 110px); align-items: center; }
.text-link { display: inline-flex; align-items: center; gap: 10px; margin-top: 26px; color: var(--blue-2); font-weight: 700; text-decoration: none; }
.text-link span { transition: transform 0.2s; }
.text-link:hover span { transform: translateX(4px); }
.trust-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.trust-list li { display: grid; grid-template-columns: 38px 1fr; gap: 14px; align-items: center; padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,0.025); }
.trust-list li > span { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: #6ce19f; background: rgba(6,199,85,0.1); font-weight: 800; }
.trust-list li div { display: grid; gap: 3px; }
.trust-list strong { font-size: 0.9rem; }
.trust-list small { color: var(--muted); font-size: 0.73rem; }

.cta { position: relative; overflow: hidden; }
.cta-glow { position: absolute; inset: 0; background: radial-gradient(circle at 48% 60%, rgba(56,199,255,0.18), transparent 35%), radial-gradient(circle at 68% 40%, rgba(154,123,255,0.16), transparent 36%); pointer-events: none; }
.cta-inner { position: relative; width: min(calc(100% - 40px), var(--content)); margin: auto; display: grid; grid-template-columns: 1fr auto; gap: 70px; align-items: center; padding: clamp(42px, 6vw, 76px); border: 1px solid var(--line-strong); border-radius: 32px; background: rgba(12,27,48,0.8); box-shadow: var(--shadow); }
.cta-copy { max-width: 680px; }
.cta-copy .button { margin-top: 30px; }
.qr-card { display: grid; grid-template-columns: 142px 1fr; gap: 18px; align-items: center; padding: 16px; border: 1px solid var(--line); border-radius: 22px; background: rgba(255,255,255,0.04); }
.qr-card img { width: 142px; height: 142px; padding: 8px; border-radius: 14px; background: #fff; }
.qr-card div { display: grid; gap: 4px; min-width: 150px; }
.qr-card strong { font-size: 0.88rem; }
.qr-card span { color: var(--muted); font-size: 0.7rem; }

.faq { background: #071020; }
.faq-layout { display: grid; grid-template-columns: 0.68fr 1fr; gap: clamp(50px, 8vw, 110px); align-items: start; }
.faq-heading { position: sticky; top: 120px; }
.faq-list { display: grid; }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list details:first-child { border-top: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 24px 54px 24px 0; cursor: pointer; font-weight: 700; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: '+'; position: absolute; right: 4px; top: 20px; width: 32px; height: 32px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--blue-2); font-size: 1.1rem; transition: transform 0.25s var(--ease), background 0.25s; }
.faq-list details[open] summary::after { transform: rotate(45deg); background: rgba(56,199,255,0.08); }
.faq-list details p { margin: -4px 50px 24px 0; color: var(--muted); font-size: 0.9rem; }
.faq-list details p a { color: var(--blue-2); }

.footer { border-top: 1px solid var(--line); background: #040a14; }
.footer-inner { width: min(calc(100% - 40px), var(--content)); min-height: 150px; margin: auto; display: grid; grid-template-columns: auto 1fr auto; gap: 30px; align-items: center; }
.footer-brand { display: flex; align-items: center; gap: 11px; }
.footer-brand div { display: grid; line-height: 1.3; }
.footer-brand strong { font-size: 1rem; }
.footer-brand span { color: var(--muted-2); font-size: 0.65rem; }
.footer-links { display: flex; justify-content: center; gap: 24px; }
.footer-links a { color: var(--muted); font-size: 0.75rem; text-decoration: none; }
.footer-links a:hover { color: var(--text); }
.footer-inner > p { margin: 0; color: var(--muted-2); font-size: 0.68rem; }

/* Shared legal pages */
.brand-mark {
  display: inline-flex;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
}
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.brand-text { display: block; }
.nav-cta {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  color: #fff;
  background: var(--green);
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
}
.inner-hero {
  padding: 150px 20px 72px;
  border-bottom: 1px solid var(--line);
  text-align: center;
  background: var(--bg-soft);
}
.inner-hero-label {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--blue-2);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}
.inner-hero h1 { margin: 0 0 12px; font-size: clamp(2.2rem, 5vw, 3.6rem); letter-spacing: -0.04em; }
.inner-hero .inner-updated { margin: 0; color: var(--muted-2); font-size: 0.82rem; }
.inner-content { width: min(calc(100% - 40px), 760px); margin: auto; padding: 76px 0 120px; }
.inner-content h2 { margin: 50px 0 16px; font-size: 1.35rem; letter-spacing: -0.02em; }
.inner-content h2:first-child { margin-top: 0; }
.inner-content p, .inner-content ul { color: var(--muted); font-size: 0.94rem; line-height: 1.9; }
.inner-content p { margin: 0 0 16px; }
.inner-content ul { margin: 0 0 18px; padding-left: 24px; }
.inner-content li { margin-bottom: 7px; }
.inner-content a { color: var(--blue-2); text-underline-offset: 3px; }
.footer-logo { font-weight: 800; }
.footer-by { color: var(--muted-2); font-size: 0.72rem; }
.footer-sep { color: var(--muted-2); }
.footer-copy { color: var(--muted-2); font-size: 0.68rem; }

.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.75s var(--ease), transform 0.75s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1080px) {
  .nav-links { gap: 16px; }
  .nav-links a[href="#scenarios"], .nav-links a[href="#how-it-works"] { display: none; }
  .hero-inner { grid-template-columns: minmax(0, 0.9fr) minmax(430px, 1.1fr); }
  .brief-card { left: -18px; }
  .feature-panel, .feature-panel--assistant, .feature-panel--fortune { grid-template-columns: 1fr 1fr; gap: 40px; }
  .cta-inner { gap: 36px; }
  .qr-card { grid-template-columns: 120px; text-align: center; }
  .qr-card img { width: 120px; height: 120px; }
  .qr-card div { min-width: 120px; }
  .footer-inner { grid-template-columns: 1fr auto; }
  .footer-links { grid-row: 2; justify-content: flex-start; padding-bottom: 24px; }
  .footer-inner > p { grid-column: 2; grid-row: 2; padding-bottom: 24px; }
}

@media (max-width: 820px) {
  html { scroll-padding-top: 82px; }
  .nav-inner { min-height: 72px; }
  .nav-logo img { width: 42px; height: 42px; }
  .nav-links { display: none; }
  .hero { min-height: auto; padding: 118px 0 90px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-copy { max-width: 680px; }
  .hero-visual { margin-top: 26px; }
  .hero-visual > img { max-height: 540px; object-position: 58% center; }
  .brief-card { left: 18px; bottom: -52px; }
  .scroll-cue { display: none; }
  .scenario-grid { grid-template-columns: 1fr; }
  .scenario-card { min-height: 250px; }
  .feature-panel, .feature-panel--assistant, .feature-panel--fortune { grid-template-columns: 1fr; min-height: auto; }
  .feature-panel--assistant .feature-art { order: 2; }
  .feature-panel--assistant .feature-copy { order: 1; }
  .feature-art { margin-top: 12px; }
  .fortune-visual { margin-top: 16px; }
  .steps, .plan-grid { grid-template-columns: 1fr; }
  .step { min-height: 240px; }
  .step:not(:last-child)::after { content: '↓'; left: 50%; right: auto; top: auto; bottom: -22px; transform: translateX(-50%); }
  .plan-card--featured { transform: none; }
  .trust-layout, .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .cta-inner { grid-template-columns: 1fr; }
  .qr-card { grid-template-columns: 130px 1fr; justify-self: start; text-align: left; }
  .qr-card img { width: 130px; height: 130px; }
}

@media (max-width: 560px) {
  .nav-inner, .hero-inner, .section-inner, .cta-inner, .footer-inner { width: min(calc(100% - 28px), var(--content)); }
  .nav-logo span { display: none; }
  .button--nav { min-height: 40px; padding-inline: 15px; font-size: 0.78rem; }
  .hero { padding-top: 104px; }
  .hero h1 { font-size: clamp(2.25rem, 9.4vw, 3rem); }
  .hero-lead { font-size: 1rem; }
  .hero-actions { display: grid; }
  .hero-actions .button { width: 100%; }
  .trust-pills { display: grid; gap: 7px; }
  .hero-visual > img { aspect-ratio: auto; max-height: none; border-radius: 24px; object-fit: contain; object-position: center; }
  .brief-card { left: 12px; right: 12px; bottom: -58px; width: auto; }
  .brief-card .brief-row:last-child { display: none; }
  .section { padding-block: 76px; }
  .section--scenarios { padding-top: 110px; }
  .scenario-card, .feature-panel, .plan-card, .step { padding: 24px; border-radius: 20px; }
  .feature-panel { margin-inline: -2px; }
  .feature-copy h3 { font-size: 2rem; }
  .feature-art { margin-inline: -10px; width: calc(100% + 20px); }
  .feature-art::after, .feature-art > img { border-radius: 20px; }
  .capability-grid { grid-template-columns: 1fr; }
  .fortune-card { left: 12px; right: 12px; bottom: -36px; }
  .feature-panel--fortune { padding-bottom: 66px; }
  .cta-inner { padding: 30px 22px; border-radius: 24px; }
  .qr-card { grid-template-columns: 96px 1fr; width: 100%; padding: 12px; }
  .qr-card img { width: 96px; height: 96px; }
  .faq-list summary { padding-block: 21px; font-size: 0.92rem; }
  .footer-inner { grid-template-columns: 1fr; padding: 34px 0; }
  .footer-links { grid-row: auto; flex-wrap: wrap; padding: 0; }
  .footer-inner > p { grid-column: auto; grid-row: auto; padding: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* ─────────────────────────────────────────────────────────────
   互動式情境展示（sim）

   取代原本三張純文字的 .scenario-card。使用者反映「文字量過大、缺乏閱讀耐心」，
   而這一段正是整頁最需要「show」而不是「tell」的位置。

   ⚠️ 漸進增強：所有對話內容都寫在 HTML 裡。動畫只在 `.js` 存在時才隱藏元素，
   所以沒有 JS、爬蟲、或 prefers-reduced-motion 的情況下一律看得到完整內容。
   ───────────────────────────────────────────────────────────── */
/* 桌機兩欄：左邊是分頁按鈕（直向一排），右邊固定放示意動畫。
   原本是「按鈕橫向一排在上、手機置中在下」，手機兩側各留一大片空白，
   整段看起來很空。兩欄之後左欄承接按鈕與註記，右欄的寬度也被明確限制住。 */
.sim {
  display: grid;
  /* 右欄直接鎖成示意畫面的寬度，不用 1fr。用 1fr 的話右欄會被拉到整個容器寬，
     480px 的畫面靠左擺，空白只是從兩側換到右側。兩欄加起來約 860px 再置中，
     整組才是一個緊湊的構圖。 */
  grid-template-columns: minmax(240px, 300px) minmax(0, 480px);
  justify-content: center;
  gap: 16px clamp(64px, 8vw, 112px);
  align-items: start;
  margin-top: 34px;
}

.sim-tabs {
  display: grid;
  grid-column: 1;
  grid-row: 1;
  grid-template-columns: 1fr;
  gap: 10px;
}
.sim-tab {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  color: var(--muted);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
}
.sim-tab:hover { border-color: var(--line-strong); color: var(--text); }
.sim-tab.is-active {
  border-color: rgba(56, 199, 255, 0.45);
  background: linear-gradient(140deg, rgba(56, 199, 255, 0.14), rgba(154, 123, 255, 0.1));
  color: var(--text);
}
/* 直排時左側色條比整塊變色更容易掃視「現在在第幾個」 */
.sim-tab { position: relative; overflow: hidden; }
.sim-tab::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--blue), var(--violet));
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}
.sim-tab.is-active::before { opacity: 1; }
.sim-tab:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.sim-tab-time { font-size: 0.7rem; letter-spacing: 0.14em; color: var(--blue); }
.sim-tab.is-active .sim-tab-time { color: var(--blue-2); }
.sim-tab-title { font-size: 0.95rem; font-weight: 700; }

.sim-stage { display: grid; grid-column: 2; grid-row: 1 / span 2; }
/* 三個 panel 疊在同一格，避免切換分頁時整頁高度跳動 */
.sim-panel { grid-area: 1 / 1; }
.sim-panel[hidden] { display: none; }

.sim-phone {
  width: 100%;
  max-width: 480px;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: #eef3f6;
  box-shadow: 0 26px 60px rgba(3, 10, 22, 0.5);
}
.sim-phone-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  color: #132238;
  background: #fff;
  border-bottom: 1px solid #dfe5ed;
}
.sim-phone-head img { border-radius: 9px; }
.sim-phone-head div { display: grid; line-height: 1.25; }
.sim-phone-head strong { font-size: 0.86rem; }
.sim-phone-head span { color: #758196; font-size: 0.66rem; }
.sim-time { margin-left: auto; color: #8b97a9; font-size: 0.7rem; }

.sim-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 360px;
  padding: 22px 18px 20px;
  background: linear-gradient(180deg, #e9f0f4, #dce7ed);
}

/* ⚠️ 直向堆疊，不是橫向。
   quick reply 那排（.sim-quick）是氣泡的**兄弟節點**，`display: flex` 會讓它跟氣泡
   並排，於是整排膠囊擠出對話框外面。改成 column 之後氣泡在上、按鈕在下，
   左右對齊改由 align-items 決定。 */
.sim-item { display: flex; flex-direction: column; align-items: flex-start; }
.sim-item--user { align-items: flex-end; }

.sim-bubble {
  max-width: 84%;
  padding: 11px 14px;
  border-radius: 16px;
  color: #17263a;
  font-size: 0.83rem;
  line-height: 1.65;
  box-shadow: 0 5px 14px rgba(45, 69, 91, 0.1);
}
.sim-bubble--user { border-bottom-right-radius: 4px; background: #9ce889; }
.sim-bubble--bot { border-bottom-left-radius: 4px; background: #fff; }
.sim-bubble--photo { display: inline-flex; align-items: center; gap: 6px; }

.sim-event {
  display: grid;
  gap: 2px;
  margin-top: 9px;
  padding: 9px 11px;
  border-left: 3px solid var(--green);
  border-radius: 8px;
  background: #f3f7f4;
}
.sim-event strong { font-size: 0.82rem; }
.sim-event small { color: #6a7789; font-size: 0.72rem; }

/* 模擬 LINE 的 quick reply：橫向捲動的膠囊，貼在氣泡下方 */
/* 佔滿對話框寬度並在自己內部橫向捲動——比照 LINE 的 quick reply。
   沒有 width/max-width 的話，膠囊總寬會把父層撐開而不是自己捲。 */
.sim-quick { display: flex; width: 100%; max-width: 100%; gap: 7px; margin-top: 9px; overflow-x: auto; padding-bottom: 3px; scrollbar-width: thin; }
.sim-quick span {
  flex: 0 0 auto;
  padding: 6px 12px;
  border: 1px solid var(--green);
  border-radius: 999px;
  color: #06904a;
  background: rgba(255, 255, 255, 0.92);
  font-size: 0.72rem;
  white-space: nowrap;
}

.sim-card { width: 100%; overflow: hidden; border-radius: 16px; color: #17233a; background: #fff; box-shadow: 0 10px 26px rgba(34, 59, 87, 0.16); }
.sim-card-head { display: grid; gap: 2px; padding: 14px 16px 10px; }
.sim-card-head strong { font-size: 0.95rem; }
.sim-card-head small { color: #7c8798; font-size: 0.7rem; }
.sim-card-row { display: flex; gap: 11px; padding: 10px 16px; border-top: 1px solid #eef1f5; }
.sim-card-row strong { display: block; font-size: 0.82rem; }
.sim-card-row p { margin: 2px 0 0; color: #6c7889; font-size: 0.75rem; }
.sim-icon { display: grid; place-items: center; width: 30px; height: 30px; flex: 0 0 auto; border-radius: 9px; font-size: 0.85rem; }
.sim-icon--blue { color: #1b7fd4; background: #e3f0fb; }
.sim-icon--violet { color: #6f4fd8; background: #ece7fc; }
.sim-card-note { padding: 11px 16px 14px; border-top: 1px solid #eef1f5; color: #6c7889; font-size: 0.75rem; line-height: 1.6; }

.sim-caption {
  margin: auto 0 0;
  padding: 10px 12px;
  border-radius: 11px;
  color: #65758a;
  background: rgba(255, 255, 255, 0.7);
  font-size: 0.72rem;
  text-align: center;
}

.sim-typing { display: inline-flex; gap: 4px; padding: 12px 15px; border-radius: 16px; border-bottom-left-radius: 4px; background: #fff; box-shadow: 0 5px 14px rgba(45, 69, 91, 0.1); }
.sim-typing i { width: 6px; height: 6px; border-radius: 50%; background: #a9b5c5; animation: sim-blink 1.3s infinite; }
.sim-typing i:nth-child(2) { animation-delay: 0.18s; }
.sim-typing i:nth-child(3) { animation-delay: 0.36s; }
@keyframes sim-blink { 0%, 60%, 100% { opacity: 0.32; } 30% { opacity: 1; } }

.sim-hint {
  grid-column: 1;
  grid-row: 2;
  margin: 4px 0 0;
  color: var(--muted-2);
  font-size: 0.74rem;
  line-height: 1.7;
  text-align: left;
}

/* 動畫只在有 JS 時生效；沒有 JS 就是一張完整的靜態對話 */
.js .sim--animated .sim-item,
.js .sim--animated .sim-caption {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
}
.js .sim--animated .sim-item.is-shown,
.js .sim--animated .sim-caption.is-shown { opacity: 1; transform: none; }
/* typing 指示器播完就收起來，不佔位置 */
.js .sim--animated .sim-item[data-sim-typing].is-done { display: none; }

/* 平板／窄桌機：兩欄擠不下就退回單欄，按鈕轉為橫向三格 */
@media (max-width: 980px) {
  /* 容器放寬到 560px 是為了三格橫排的按鈕：卡在 460px 的話每格只剩 147px，
     「收到晨間簡報」會被擠到換行。手機本身仍維持 460px 置中。 */
  .sim { grid-template-columns: minmax(0, 560px); justify-content: center; gap: 20px; }
  .sim-tabs { grid-column: 1; grid-row: auto; grid-template-columns: repeat(3, 1fr); }
  .sim-stage { grid-column: 1; grid-row: auto; }
  .sim-hint { grid-column: 1; grid-row: auto; text-align: center; margin-top: 4px; }
  .sim-phone { max-width: 460px; margin: 0 auto; }
  /* 單欄時色條改壓在上緣，才不會跟橫向卡片的左邊界打架 */
  .sim-tab::before { inset: 0 0 auto 0; width: auto; height: 3px; background: linear-gradient(90deg, var(--blue), var(--violet)); }
}

/* 手機：三格橫排會被壓到看不清楚，改回直向清單 */
@media (max-width: 720px) {
  .sim-tabs { grid-template-columns: 1fr; gap: 8px; }
  .sim-tab { display: flex; align-items: baseline; gap: 10px; padding: 12px 14px; }
  .sim-tab::before { inset: 0 auto 0 0; width: 3px; height: auto; background: linear-gradient(180deg, var(--blue), var(--violet)); }
  .sim-body { min-height: 320px; }
}

@media (prefers-reduced-motion: reduce) {
  /* 逐則揭露本身就是動畫，關掉之後直接顯示完整對話 */
  .js .sim--animated .sim-item,
  .js .sim--animated .sim-caption { opacity: 1; transform: none; }
  .sim-typing i { animation: none; opacity: 0.6; }
}