/* ============================================================
   守識 KeeperSight — 設計 tokens（未來多分頁共用此檔）
   色彩鎖定：米杏 / 琥珀金 / 墨灰 / 靛藍（禁紅、橘紅、粉、鮮綠）
   ============================================================ */
:root {
  --bg: #FAF6EB;        /* 米杏 */
  --ink: #2C2A26;       /* 墨灰 */
  --gold: #C9A961;      /* 琥珀金 */
  --indigo: #1E3A5F;    /* 靛藍 */
  --ink-soft: #5A564E;  /* 墨灰 70% 語意色 */
  --gold-soft: #E4D5B3; /* 琥珀金淡化，分隔線用 */
  --serif: "Noto Serif TC", "PMingLiU", serif;
  --sans: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  --container: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(250, 246, 235, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gold-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
}

.brand-zh {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--ink);
  letter-spacing: 0.35em;
  margin-right: -0.35em;
}

.brand-en {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 28px;
}

.site-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}

.site-nav a:hover { color: var(--gold); }

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0 104px;
  text-align: center;
}

.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  color: var(--gold);
  margin-bottom: 20px;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(2rem, 5.5vw, 3.2rem);
  letter-spacing: 0.14em;
  color: var(--indigo);
  text-wrap: balance;
}

.tagline {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 3vw, 1.55rem);
  letter-spacing: 0.22em;
  color: var(--ink);
  margin-top: 22px;
}

.tagline::after {
  content: "";
  display: block;
  width: 56px;
  height: 2px;
  background: var(--gold);
  margin: 30px auto 0;
}

.hero-actions {
  margin-top: 40px;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 13px 32px;
  border-radius: 3px;
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  transition: opacity 0.2s, background 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--gold);
  color: #FFFDF7;
  font-weight: 500;
}

.btn-primary:hover { opacity: 0.88; }

.btn-ghost {
  border: 1px solid var(--gold);
  color: var(--indigo);
}

.btn-ghost:hover {
  background: var(--gold);
  color: #FFFDF7;
}

.btn-wide { margin-top: 36px; }

/* ---------- Sections ---------- */
.section {
  padding: 84px 0;
  scroll-margin-top: 64px; /* sticky header 高度 */
  text-align: center;
}

.section-eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: 12px;
}

.section h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: 0.16em;
  color: var(--indigo);
  margin-bottom: 48px;
}

/* ---------- Services ---------- */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.card {
  background: #FFFDF7;
  border: 1px solid var(--gold-soft);
  border-top: 3px solid var(--gold);
  border-radius: 4px;
  padding: 40px 28px 36px;
}

.card-icon {
  width: 46px;
  height: 46px;
  margin: 0 auto 20px;
  color: var(--gold);
}

.card-icon svg { width: 100%; height: 100%; }

.card h3 {
  font-family: var(--serif);
  font-size: 1.18rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink);
  margin-bottom: 12px;
}

.card-sub {
  font-size: 0.92rem;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
}

.card-sub .dot { color: var(--gold); }

/* ---------- About ---------- */
.section-about {
  border-top: 1px solid var(--gold-soft);
  border-bottom: 1px solid var(--gold-soft);
}

.section-about h2 { margin-bottom: 8px; }

.about-title {
  font-size: 1rem;
  letter-spacing: 0.32em;
  color: var(--gold);
  margin-bottom: 26px;
}

.about-creds {
  list-style: none;
  max-width: 480px;
  margin: 0 auto 32px;
}

.about-creds li {
  font-size: 0.98rem;
  color: var(--ink);
  letter-spacing: 0.08em;
  padding: 12px 8px;
  border-bottom: 1px solid var(--gold-soft);
  text-wrap: balance;
}

.about-creds li:first-child {
  border-top: 1px solid var(--gold-soft);
}

.about-line {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
}

/* ---------- Contact ---------- */
.section-contact {
  background: var(--indigo);
  color: var(--bg);
}

.section-contact .section-eyebrow { color: var(--gold); }

.section-contact h2 { color: var(--bg); }

.contact-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  max-width: 420px;
  margin: 0 auto;
}

.contact-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid rgba(201, 169, 97, 0.35);
  padding-bottom: 12px;
}

.contact-label {
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.contact-list a {
  color: var(--bg);
  text-decoration: none;
  font-size: 1.02rem;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

.contact-list a:hover { color: var(--gold); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--indigo);
  border-top: 1px solid rgba(201, 169, 97, 0.35);
  padding: 26px 0;
  text-align: center;
}

.site-footer p {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(250, 246, 235, 0.65);
}

/* ---------- 桌機（≥768px）---------- */
@media (min-width: 768px) {
  .hero { padding: 128px 0 136px; }

  .cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .section { padding: 96px 0; }
}

/* ---------- 手機微調（≤400px）---------- */
@media (max-width: 400px) {
  .site-nav { gap: 18px; }
  .brand-en { display: none; }
}