/* 全域版型設定 */
:root {
  --bg: #f8f5ef;
  --bg-soft: #fffdf8;
  --paper: rgba(255, 252, 246, 0.82);
  --text: #2d3a36;
  --muted: #65746d;
  --primary: #6f9c95;
  --primary-deep: #4f726d;
  --accent: #d9be8f;
  --line: rgba(111, 156, 149, 0.18);
  --shadow: 0 20px 60px rgba(98, 115, 109, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans TC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(220, 235, 229, 0.95), transparent 32%),
    radial-gradient(circle at right center, rgba(240, 225, 196, 0.45), transparent 24%),
    linear-gradient(180deg, #fcfbf8 0%, #f6f2ea 100%);
  line-height: 1.7;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.section {
  padding: 92px 0;
  position: relative;
}

.section-head {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-head.center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-tag,
.eyebrow {
  margin: 0 0 12px;
  color: var(--primary-deep);
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
.brand-text strong {
  font-family: "Noto Serif TC", serif;
  line-height: 1.3;
}

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

.card-soft {
  background: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(252, 251, 248, 0.82);
  border-bottom: 1px solid rgba(111, 156, 149, 0.12);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #7ea8a1, #d8c090);
  color: #fff;
  font-family: "Noto Serif TC", serif;
  font-size: 1.25rem;
  box-shadow: 0 10px 24px rgba(111, 156, 149, 0.26);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-text strong {
  font-size: 1.05rem;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.84rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a {
  color: var(--text);
  font-size: 0.96rem;
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 14px;
  background: rgba(111, 156, 149, 0.1);
  cursor: pointer;
  padding: 10px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  margin: 6px 0;
  border-radius: 999px;
}

/* Footer */
.site-footer {
  padding: 24px 0 40px;
  text-align: center;
  color: var(--muted);
  font-size: 0.94rem;
}

/* Floating icons */
.floating-social {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.floating-social a {
  width: 52px;
  height: 52px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #7ea8a1, #d8c090);
  color: #fff;
  box-shadow: 0 12px 30px rgba(79, 114, 109, 0.25);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.floating-social a:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(79, 114, 109, 0.34);
}

.floating-social svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: calc(100% + 10px);
    background: rgba(255, 252, 246, 0.98);
    border: 1px solid rgba(111, 156, 149, 0.12);
    border-radius: 20px;
    padding: 16px;
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: 0.25s ease;
  }

  .site-header.menu-open .site-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
}