/* ============================================
   希望的錨 Anchor of Hope — 起始骨架樣式
   色彩系統：
   --navy-deep:  #16233B  深海／夜色
   --navy-mid:   #1F3654  次要深色
   --gold:       #D4A24C  破曉之光（主要強調色）
   --mist:       #EDF1F0  淺霧色（淺色區塊背景，取代常見的米白）
   --olive:      #6B7B4F  青橄欖項目色
   --rose:       #A65B4B  亞拿項目色
   --ink:        #1C1F22  內文深色
   ============================================ */

:root {
  --navy-deep: #16233b;
  --navy-mid: #1f3654;
  --gold: #d4a24c;
  --gold-soft: #e8c98a;
  --mist: #edf1f0;
  --olive: #6b7b4f;
  --rose: #a65b4b;
  --ink: #1c1f22;
  --ink-soft: #4a5057;
  --font-display: "Fraunces", "Noto Serif TC", serif;
  --font-body: "Work Sans", "Noto Sans TC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation: none !important;
    transition: none !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--mist);
  line-height: 1.7;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

/* ---------- Nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(22, 35, 59, 0.92);
  backdrop-filter: blur(6px);
  color: var(--mist);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-nav .brand {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--mist);
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  margin: 0;
  padding: 0;
  font-size: 0.92rem;
}

.site-nav a.nav-link {
  text-decoration: none;
  color: var(--mist);
  opacity: 0.82;
  transition: opacity 0.2s ease;
}

.site-nav a.nav-link:hover {
  opacity: 1;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: radial-gradient(ellipse at 50% -10%, var(--navy-mid), var(--navy-deep) 65%);
  color: var(--mist);
  padding: clamp(4rem, 10vw, 7rem) 0 clamp(5rem, 12vw, 8rem);
  overflow: hidden;
  text-align: center;
}

.hero .anchor-mark {
  width: 64px;
  height: 64px;
  margin: 0 auto 2rem;
  color: var(--gold);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  margin: 0 0 0.5rem;
  letter-spacing: 0.01em;
}

.hero .subtitle {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.2rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 0 0 2rem;
}

.hero p.lede {
  max-width: 42rem;
  margin: 0 auto;
  font-size: 1.08rem;
  color: rgba(237, 241, 240, 0.86);
}

.hero .cta-row {
  margin-top: 2.5rem;
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.6rem;
  border-radius: 999px;
  font-size: 0.95rem;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--gold);
  color: var(--navy-deep);
}

.btn-primary:hover {
  box-shadow: 0 8px 22px rgba(212, 162, 76, 0.35);
}

.btn-ghost {
  border: 1px solid rgba(237, 241, 240, 0.4);
  color: var(--mist);
}

.btn-ghost:hover {
  border-color: var(--mist);
}

/* ---------- Section shell ---------- */
section {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.section-head {
  max-width: 40rem;
  margin: 0 0 3rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.4vw, 2.4rem);
  margin: 0.4rem 0 0;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

@media (max-width: 720px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
}

.about-grid p {
  color: var(--ink-soft);
  font-size: 1.02rem;
}

.stat-card {
  background: #fff;
  border: 1px solid rgba(22, 35, 59, 0.08);
  border-radius: 14px;
  padding: 1.6rem;
}

.stat-card .stat {
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: var(--navy-deep);
}

.stat-card .stat-label {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin-top: 0.25rem;
}

.stat-card + .stat-card {
  margin-top: 1rem;
}

/* ---------- Projects ---------- */
.projects {
  background: #fff;
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

@media (max-width: 720px) {
  .project-grid {
    grid-template-columns: 1fr;
  }
}

.project-card {
  border-radius: 18px;
  padding: 2.2rem;
  color: var(--mist);
  position: relative;
  overflow: hidden;
}

.project-card.olive {
  background: linear-gradient(160deg, var(--olive), #4e5b38);
}

.project-card.rose {
  background: linear-gradient(160deg, var(--rose), #7a4038);
}

.project-card .eyebrow {
  color: rgba(237, 241, 240, 0.75);
}

.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin: 0.5rem 0 0.9rem;
}

.project-card p {
  color: rgba(237, 241, 240, 0.9);
  font-size: 0.98rem;
}

.project-card a.card-link {
  display: inline-block;
  margin-top: 1.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(237, 241, 240, 0.5);
  padding-bottom: 2px;
}

/* ---------- Support / CTA band ---------- */
.support-band {
  background: var(--navy-deep);
  color: var(--mist);
  text-align: center;
}

.support-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  margin: 0 0 1rem;
}

.support-band p {
  max-width: 34rem;
  margin: 0 auto 2rem;
  color: rgba(237, 241, 240, 0.82);
}

/* ---------- Footer ---------- */
footer {
  background: var(--navy-mid);
  color: rgba(237, 241, 240, 0.7);
  font-size: 0.85rem;
  padding: 2.5rem 0;
}

footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}

/* ---------- Focus states ---------- */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}