/* =========================================================
   Swan Edu - Stylesheet
   Design system: 沉稳学院派 · Deep Blue · Serif Display
   ========================================================= */

:root {
  --color-ink:        #0A2540;   /* primary deep blue */
  --color-ink-soft:   #163A5F;
  --color-ink-2:      #1F4068;
  --color-gold:       #B89766;   /* warm accent (sparingly) */
  --color-gold-soft:  #D8C29D;
  --color-paper:      #F7F4ED;   /* off-white */
  --color-paper-2:    #EEE9DC;
  --color-line:       #DAD3C2;
  --color-text:       #2A2F38;
  --color-text-soft:  #5A6271;
  --color-bg:         #FBFAF6;
  --color-white:      #ffffff;

  --shadow-sm: 0 1px 2px rgba(10,37,64,0.06), 0 2px 6px rgba(10,37,64,0.04);
  --shadow-md: 0 10px 30px rgba(10,37,64,0.08), 0 2px 6px rgba(10,37,64,0.05);
  --shadow-lg: 0 30px 60px rgba(10,37,64,0.15);

  --serif: "Cormorant Garamond", "Noto Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --sans:  "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;

  --radius-sm: 4px;
  --radius:    8px;
  --radius-lg: 18px;

  --container: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
button { font-family: inherit; cursor: pointer; border: none; background: transparent; color: inherit; }
ul { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4 { margin: 0; font-family: var(--serif); font-weight: 600; color: var(--color-ink); letter-spacing: 0.02em; line-height: 1.25; }
p { margin: 0; }
::selection { background: var(--color-ink); color: var(--color-paper); }

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: 10px 18px;
  z-index: 200;
}
.skip-link:focus { left: 16px; top: 16px; outline: 2px solid var(--color-gold); }

/* ---------- Layout ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
  width: 100%;
}

.section {
  padding: clamp(72px, 9vw, 120px) 0;
  position: relative;
}

.section-head {
  max-width: 760px;
  margin: 0 auto clamp(40px, 5vw, 64px);
  text-align: center;
}

.section-eyebrow {
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 18px;
  font-weight: 600;
}
.section-eyebrow.light { color: var(--color-gold-soft); }

.section-title {
  font-size: clamp(1.9rem, 3.4vw, 2.75rem);
  margin-bottom: 18px;
}
.section-title.light { color: var(--color-paper); }

.section-desc {
  font-size: 1.02rem;
  color: var(--color-text-soft);
  max-width: 640px;
  margin: 0 auto;
}
.section-desc.light { color: rgba(247,244,237,0.78); max-width: none; margin: 0; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 18px 0;
  background: rgba(251, 250, 246, 0);
  transition: background .35s var(--ease), padding .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(251, 250, 246, 0.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  padding: 12px 0;
  box-shadow: var(--shadow-sm);
}
.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  position: relative;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 8px;
  filter: drop-shadow(0 2px 6px rgba(10,37,64,0.12));
  transition: transform .4s var(--ease);
}
.brand:hover .brand-logo { transform: rotate(-6deg) scale(1.05); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-en {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.18em;
  color: var(--color-ink);
}
.brand-zh {
  font-family: var(--sans);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  color: var(--color-text-soft);
  margin-top: 4px;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-list a {
  font-size: 0.92rem;
  color: var(--color-ink-soft);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width .3s var(--ease);
}
.nav-list a:hover { color: var(--color-ink); }
.nav-list a:hover::after { width: 100%; }

.lang-toggle {
  border: 1px solid var(--color-ink-soft);
  color: var(--color-ink-soft);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  font-weight: 600;
  transition: all .25s var(--ease);
}
.lang-toggle:hover {
  background: var(--color-ink);
  color: var(--color-paper);
  border-color: var(--color-ink);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 4px;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 2px;
  transition: transform .3s var(--ease), background .3s var(--ease), color .3s var(--ease), box-shadow .3s var(--ease);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--color-ink);
  color: var(--color-paper);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  background: var(--color-ink-2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-ink);
}
.btn-ghost:hover {
  background: var(--color-ink);
  color: var(--color-paper);
  transform: translateY(-2px);
}
.btn-light {
  background: var(--color-paper);
  color: var(--color-ink);
}
.btn-light:hover {
  background: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px 0 80px;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 20%, rgba(184,151,102,0.10), transparent 45%),
    radial-gradient(circle at 80% 80%, rgba(22,58,95,0.12), transparent 45%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-paper) 100%);
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(10,37,64,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10,37,64,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at center, black 30%, transparent 70%);
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-content { max-width: 640px; }
.eyebrow {
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 28px;
  position: relative;
  padding-left: 56px;
}
.eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 44px;
  height: 1px;
  background: var(--color-gold);
}
.hero-title {
  font-size: clamp(2.6rem, 5.8vw, 4.8rem);
  font-weight: 600;
  line-height: 1.1;
  color: var(--color-ink);
  margin-bottom: 18px;
  font-family: var(--serif);
  letter-spacing: 0.005em;
}
.hero-title span { display: block; }
.hero-title-en {
  font-family: var(--serif);
  font-weight: 600;
}
.hero-title-em {
  font-style: italic;
  font-weight: 500;
  color: var(--color-ink-soft);
  position: relative;
  display: inline-block;
}
.hero-title-em::after {
  content: "";
  display: block;
  width: 64px;
  height: 2px;
  background: var(--color-gold);
  margin-top: 14px;
}
.hero-tagline {
  font-family: "Noto Serif SC", serif;
  font-weight: 500;
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  color: var(--color-ink);
  letter-spacing: 0.18em;
  margin-bottom: 24px;
}
:root[data-lang="en"] .hero-tagline {
  font-family: var(--serif);
  font-style: italic;
  letter-spacing: 0.02em;
}
.hero-sub {
  font-size: 1.08rem;
  color: var(--color-text-soft);
  margin-bottom: 40px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}
.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  border-top: 1px solid var(--color-line);
  padding-top: 32px;
}
.hero-meta li { display: flex; flex-direction: column; }
.hero-meta strong {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--color-ink);
  font-weight: 600;
  margin-bottom: 4px;
}
.hero-meta span {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.hero-card {
  background: linear-gradient(180deg, #fff 0%, var(--color-paper) 100%);
  border: 1px solid var(--color-line);
  padding: 56px 52px;
  text-align: center;
  width: min(420px, 100%);
  position: relative;
  box-shadow: var(--shadow-lg);
  border-radius: 2px;
}
.hero-card::before, .hero-card::after {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(184,151,102,0.4);
  pointer-events: none;
}
.hero-card::after { inset: 18px; border-color: rgba(10,37,64,0.08); }
.hero-logo {
  width: 96px;
  height: 96px;
  margin: 0 auto 24px;
  border-radius: 8px;
  box-shadow: 0 6px 18px rgba(10,37,64,0.18);
}
.hero-card-line {
  width: 60px;
  height: 1px;
  background: var(--color-gold);
  margin: 0 auto 24px;
}
.hero-card-en {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: 0.32em;
  color: var(--color-ink);
}
.hero-card-zh {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 0.92rem;
  letter-spacing: 0.24em;
  margin: 14px 0 28px;
  color: var(--color-ink-soft);
}
.hero-card-cap {
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  color: var(--color-text-soft);
}

.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 36px;
  border: 1px solid var(--color-ink-soft);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.scroll-hint span {
  width: 2px;
  height: 8px;
  background: var(--color-ink-soft);
  border-radius: 2px;
  animation: scroll-dot 1.8s var(--ease) infinite;
}
@keyframes scroll-dot {
  0%   { transform: translateY(0); opacity: 1; }
  60%  { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------- About ---------- */
.about { background: var(--color-bg); }
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}
.about-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  padding: 36px 30px;
  position: relative;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.about-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-gold-soft);
}
.about-num {
  font-family: var(--serif);
  font-style: italic;
  font-size: 2.2rem;
  color: var(--color-gold);
  font-weight: 500;
  margin-bottom: 16px;
}
.about-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}
.about-card p {
  font-size: 0.96rem;
  color: var(--color-text-soft);
}

/* ---------- Courses ---------- */
.courses { background: linear-gradient(180deg, var(--color-paper) 0%, var(--color-bg) 100%); }
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.course-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  padding: 40px 32px 36px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-ink-soft);
}
.course-card--featured {
  background: var(--color-ink);
  color: var(--color-paper);
  border-color: var(--color-ink);
}
.course-card--featured .course-title { color: var(--color-paper); }
.course-card--featured .course-desc { color: rgba(247,244,237,0.82); }
.course-card--featured .course-list li { color: rgba(247,244,237,0.92); border-color: rgba(247,244,237,0.18); }
.course-card--featured:hover { box-shadow: 0 30px 60px rgba(10,37,64,0.4); }
.course-tag {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
  padding: 4px 10px;
  text-transform: uppercase;
  background: rgba(184,151,102,0.08);
}
.course-title {
  font-size: 1.45rem;
  margin-bottom: 16px;
}
.course-desc {
  font-size: 0.96rem;
  color: var(--color-text-soft);
  margin-bottom: 24px;
  flex-grow: 1;
}
.course-list { margin-top: 10px; }
.course-list li {
  font-size: 0.9rem;
  padding: 10px 0;
  border-top: 1px solid var(--color-line);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 10px;
}
.course-list li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--color-gold);
  border-radius: 50%;
  flex-shrink: 0;
}
.course-link {
  margin-top: auto;
  font-weight: 600;
  color: var(--color-ink);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--color-ink);
  align-self: flex-start;
  padding-bottom: 2px;
  transition: gap .25s var(--ease), color .25s var(--ease);
}
.course-link:hover { color: var(--color-gold); border-color: var(--color-gold); }

/* ---------- Resources (dark band) ---------- */
.resources {
  background:
    radial-gradient(circle at 30% 30%, rgba(184,151,102,0.18), transparent 50%),
    linear-gradient(135deg, var(--color-ink) 0%, var(--color-ink-2) 100%);
  color: var(--color-paper);
  overflow: hidden;
}
.resources-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.resources-text { max-width: 600px; }
.resources-list {
  margin: 28px 0 36px;
}
.resources-list li {
  font-size: 1rem;
  color: rgba(247,244,237,0.85);
  padding: 12px 0;
  border-bottom: 1px solid rgba(247,244,237,0.12);
}
.resources-list li:last-child { border-bottom: none; }

.resources-visual {
  position: relative;
  display: flex;
  justify-content: center;
  perspective: 1200px;
}
.resource-stack {
  position: relative;
  width: 340px;
  height: 440px;
  transform-style: preserve-3d;
}
.resource-paper {
  position: absolute;
  inset: 0;
  background: var(--color-paper);
  border-radius: 2px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform .5s var(--ease);
}
.paper-1 { transform: rotate(-8deg) translate(-22px, 16px); background: #ECE6D2; }
.paper-2 { transform: rotate(4deg) translate(18px, 6px); background: #F2EBD7; }
.paper-3 {
  transform: rotate(-1deg);
  background: var(--color-paper);
  border: 1px solid var(--color-line);
}
.paper-stamp {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  color: var(--color-ink);
  border: 1px solid var(--color-ink);
  padding: 6px 12px;
  align-self: flex-start;
  margin-bottom: 12px;
}
.paper-line {
  height: 8px;
  background: rgba(10,37,64,0.22);
  border-radius: 2px;
}
.paper-line.short { width: 60%; }
.resources:hover .paper-1 { transform: rotate(-10deg) translate(-30px, 18px); }
.resources:hover .paper-2 { transform: rotate(6deg) translate(24px, 6px); }
.resources:hover .paper-3 { transform: rotate(-2deg) translateY(-6px); }

/* ---------- Faculty ---------- */
.faculty { background: var(--color-bg); }
.faculty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.faculty-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  padding: 40px 32px;
  text-align: center;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.faculty-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.faculty-avatar {
  width: 88px;
  height: 88px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-ink-2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-paper);
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-md);
}
.faculty-card h3 {
  font-size: 1.25rem;
  margin-bottom: 6px;
}
.faculty-role {
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 14px;
  font-weight: 600;
}
.faculty-bio {
  font-size: 0.95rem;
  color: var(--color-text-soft);
}

/* ---------- Testimonials ---------- */
.testimonials { background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-paper) 100%); }
.testi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}
.testi-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  padding: 40px 32px 32px;
  margin: 0;
  position: relative;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.testi-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.testi-card::before {
  content: "\201C";
  position: absolute;
  top: 6px;
  left: 22px;
  font-family: var(--serif);
  font-size: 5rem;
  color: var(--color-gold-soft);
  line-height: 1;
}
.testi-card blockquote {
  margin: 24px 0 20px;
  font-family: var(--serif);
  font-size: 1.12rem;
  line-height: 1.55;
  color: var(--color-ink);
  font-style: italic;
}
.testi-card figcaption {
  border-top: 1px solid var(--color-line);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
}
.testi-card figcaption strong {
  font-size: 0.96rem;
  color: var(--color-ink);
  font-weight: 600;
  margin-bottom: 2px;
}
.testi-card figcaption span {
  font-size: 0.82rem;
  color: var(--color-text-soft);
  letter-spacing: 0.06em;
}

/* ---------- Contact ---------- */
.contact { background: var(--color-bg); }
.contact-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.contact-text .section-eyebrow,
.contact-text .section-title,
.contact-text .section-desc {
  text-align: left;
  margin-left: 0;
  margin-right: 0;
}
.contact-text .section-eyebrow { margin-bottom: 16px; }
.contact-text .section-desc { max-width: 520px; margin-bottom: 40px; }
.contact-list { display: flex; flex-direction: column; gap: 20px; }
.contact-list li {
  display: grid;
  grid-template-columns: 96px 1fr;
  align-items: center;
  padding: 16px 0;
  border-top: 1px solid var(--color-line);
}
.contact-list li:last-child { border-bottom: 1px solid var(--color-line); }
.contact-label {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  font-weight: 600;
}
.contact-value {
  font-size: 1.05rem;
  color: var(--color-ink);
  font-weight: 500;
}
a.contact-value:hover { color: var(--color-gold); }

.contact-qr {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  padding: 36px;
  text-align: center;
  box-shadow: var(--shadow-md);
  position: relative;
}
.contact-qr::before, .contact-qr::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(184,151,102,0.4);
  pointer-events: none;
}
.qr-frame {
  width: 220px;
  height: 220px;
  margin: 0 auto 22px;
  padding: 10px;
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}
.qr-frame img { width: 100%; height: 100%; object-fit: contain; }
.qr-cap {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
  position: relative;
  z-index: 1;
}
.qr-sub {
  font-size: 0.88rem;
  color: var(--color-text-soft);
  position: relative;
  z-index: 1;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: rgba(247,244,237,0.75);
  padding: 56px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}
.footer-logo {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  filter: brightness(1.1);
}
.footer-name {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-paper);
  font-size: 1.05rem;
}
.footer-tag {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--color-gold-soft);
  margin-top: 4px;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}
.footer-nav a {
  font-size: 0.9rem;
  color: rgba(247,244,237,0.7);
  transition: color .25s var(--ease);
}
.footer-nav a:hover { color: var(--color-gold-soft); }
.footer-copy {
  text-align: right;
  font-size: 0.85rem;
  color: rgba(247,244,237,0.55);
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  will-change: opacity, transform;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }
.reveal[data-delay="4"] { transition-delay: .4s; }

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

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-inner,
  .resources-inner,
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .hero-card { width: min(360px, 100%); padding: 40px 32px; }
  .resources-visual { margin-top: 16px; }
  .resource-stack { width: 280px; height: 360px; }
  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer-brand { justify-content: center; }
  .footer-copy { text-align: center; }
}

@media (max-width: 760px) {
  .container { padding: 0 20px; }

  /* Dropdown mobile menu */
  .nav-list {
    position: absolute;
    top: calc(100% + 6px);
    right: 20px;
    left: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--color-white);
    border: 1px solid var(--color-line);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    width: min(260px, calc(100vw - 40px));
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s var(--ease);
  }
  .nav-list.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-list li { width: 100%; }
  .nav-list a {
    display: block;
    width: 100%;
    font-family: var(--sans);
    font-size: 0.95rem;
    color: var(--color-ink);
    padding: 12px 22px;
    text-align: left;
    border-radius: 0;
  }
  .nav-list a::after { display: none; }
  .nav-list a:hover,
  .nav-list a.active {
    background: var(--color-paper);
    color: var(--color-ink);
  }

  .menu-toggle { display: flex; position: relative; z-index: 95; }
  .primary-nav { gap: 12px; }
  .lang-toggle { padding: 6px 12px; font-size: 0.72rem; }

  .hero { padding: 120px 0 60px; min-height: auto; }
  .hero-title { font-size: clamp(2rem, 9vw, 2.6rem); }
  .hero-meta {
    grid-template-columns: 1fr;
    gap: 18px;
    padding-top: 24px;
  }
  .hero-actions { gap: 12px; }
  .btn { padding: 12px 22px; font-size: 0.9rem; width: 100%; }
  .hero-actions .btn { flex: 1; }
  .scroll-hint { display: none; }

  .contact-list li {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .contact-label { letter-spacing: 0.16em; }

  .qr-frame { width: 180px; height: 180px; }
}

@media (max-width: 420px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .brand-zh { display: none; }
  .brand-en { font-size: 1.1rem; }
}