/* =============================================
   FUZIZHANG.COM — Allen Zhang Personal Site
   ============================================= */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:       #1a1a2e;
  --ink-light: #3d3d5c;
  --gold:      #c9a84c;
  --gold-light:#e8c86d;
  --gold-dim:  #f5e9c8;
  --cream:     #faf8f4;
  --white:     #ffffff;
  --dark-bg:   #0f0f1e;
  --dark-mid:  #16213e;
  --accent:    #2563eb;
  --accent2:   #1d4ed8;
  --border:    rgba(0,0,0,.08);
  --shadow:    0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.14);
  --radius:    12px;
  --radius-sm: 8px;
  --transition:0.25s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }

/* --- Section Headers --- */
.section-header { text-align: center; margin-bottom: 56px; }
.section-header.light .section-label,
.section-header.light .section-title,
.section-header.light .section-desc { color: var(--white); }
.section-label {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}
.section-title {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
  line-height: 1.3;
}
.section-desc {
  font-size: .97rem;
  color: var(--ink-light);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,.97);
  box-shadow: 0 2px 20px rgba(0,0,0,.08);
  padding: 12px 0;
  backdrop-filter: blur(12px);
}
.nav-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}
.logo-cn {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.3rem;
  color: var(--gold);
}
.logo-divider { color: rgba(255,255,255,.3); font-size: .9rem; }
.navbar.scrolled .logo-divider { color: var(--border); }
.logo-en {
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--white);
}
.navbar.scrolled .logo-en { color: var(--ink-light); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: .88rem;
  font-weight: 500;
  color: rgba(255,255,255,.85);
  transition: color var(--transition);
  position: relative;
}
.navbar.scrolled .nav-links a { color: var(--ink-light); }
.nav-links a:hover { color: var(--gold); }
.navbar.scrolled .nav-links a:hover { color: var(--gold); }

.nav-cta {
  background: var(--gold) !important;
  color: var(--ink) !important;
  padding: 8px 20px !important;
  border-radius: 50px !important;
  font-weight: 700 !important;
  font-size: .85rem !important;
  transition: background var(--transition), transform var(--transition) !important;
}
.nav-cta:hover { background: var(--gold-light) !important; transform: translateY(-1px); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Language toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border: 1.5px solid rgba(255,255,255,.3);
  border-radius: 50px;
  cursor: pointer;
  background: none;
  transition: border-color var(--transition);
  flex-shrink: 0;
}
.navbar.scrolled .lang-toggle { border-color: var(--border); }
.lang-toggle:hover { border-color: var(--gold); }
.lang-opt {
  font-size: .75rem;
  font-weight: 700;
  color: rgba(255,255,255,.45);
  transition: color var(--transition);
}
.navbar.scrolled .lang-opt { color: var(--ink-light); }
.lang-opt.active { color: var(--gold) !important; }
.lang-sep { font-size: .68rem; color: rgba(255,255,255,.25); }
.navbar.scrolled .lang-sep { color: rgba(0,0,0,.2); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}
.navbar.scrolled .nav-toggle span { background: var(--ink); }

/* =============================================
   HERO
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-mid) 50%, #1a1440 100%);
  padding: 120px 24px 80px;
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 20%, rgba(201,168,76,.12) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 80% 80%, rgba(37,99,235,.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  border: 1px solid rgba(201,168,76,.4);
  color: var(--gold);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 28px;
}

.hero-title {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.title-cn {
  font-family: 'Noto Serif SC', serif;
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}
.title-en {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.5rem, 4vw, 2.8rem);
  font-weight: 400;
  color: var(--gold);
  font-style: italic;
}

.hero-subtitle {
  font-size: clamp(.9rem, 1.5vw, 1.05rem);
  color: rgba(255,255,255,.7);
  margin-bottom: 28px;
  letter-spacing: .04em;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
}
.tag {
  font-size: .78rem;
  font-weight: 600;
  color: var(--gold-light);
  background: rgba(201,168,76,.12);
  border: 1px solid rgba(201,168,76,.25);
  padding: 5px 14px;
  border-radius: 50px;
  letter-spacing: .04em;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 40px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 20px 32px;
  backdrop-filter: blur(8px);
}
.stat { text-align: center; padding: 0 28px; }
.stat-num {
  display: block;
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label {
  font-size: .78rem;
  color: rgba(255,255,255,.6);
  letter-spacing: .04em;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.15);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-primary {
  background: var(--gold);
  color: var(--ink);
  font-weight: 700;
  font-size: .93rem;
  padding: 14px 32px;
  border-radius: 50px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(201,168,76,.35);
}
.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(201,168,76,.45);
}
.btn-secondary {
  border: 1.5px solid rgba(255,255,255,.35);
  color: rgba(255,255,255,.85);
  font-weight: 600;
  font-size: .93rem;
  padding: 13px 32px;
  border-radius: 50px;
  transition: all var(--transition);
}
.btn-secondary:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.4);
  font-size: .75rem;
  letter-spacing: .08em;
}
.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255,255,255,.3);
  border-bottom: 2px solid rgba(255,255,255,.3);
  transform: rotate(45deg);
  animation: bounce 1.8s infinite;
}
@keyframes bounce {
  0%,100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(5px); }
}

/* =============================================
   ABOUT
   ============================================= */
.about { background: var(--cream); }

.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 56px;
  align-items: start;
  margin-bottom: 64px;
}

.portrait-frame {
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark-bg), var(--dark-mid));
  aspect-ratio: 3/4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--gold-dim);
}
.portrait-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.about-nickname {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 16px;
}
.nickname-item {
  font-family: 'Noto Serif SC', serif;
  font-size: .85rem;
  font-weight: 700;
  color: var(--gold);
  background: rgba(201,168,76,.1);
  border: 1px solid rgba(201,168,76,.3);
  padding: 4px 14px;
  border-radius: 50px;
}

.about-intro p {
  font-size: 1rem;
  color: var(--ink-light);
  line-height: 1.9;
  margin-bottom: 28px;
}
.about-intro strong { color: var(--ink); }

.credentials { margin-bottom: 28px; }
.credentials-title {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--gold-dim);
}

.credential-list { display: flex; flex-direction: column; gap: 10px; }
.credential-item {
  display: flex;
  align-items: center;
  gap: 14px;
}
.credential-icon { font-size: 1.4rem; flex-shrink: 0; }
.credential-info { display: flex; flex-direction: column; }
.credential-degree { font-weight: 700; font-size: .93rem; color: var(--ink); }
.credential-school { font-size: .83rem; color: var(--ink-light); }

/* Timeline */
.timeline { display: flex; flex-direction: column; gap: 12px; }
.timeline-item { display: flex; align-items: flex-start; gap: 14px; }
.timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold-dim);
  border: 2px solid var(--gold);
  flex-shrink: 0;
  margin-top: 6px;
}
.timeline-dot.current { background: var(--gold); }
.timeline-content { display: flex; flex-direction: column; }
.timeline-org { font-weight: 700; font-size: .93rem; color: var(--ink); }
.timeline-role { font-size: .82rem; color: var(--ink-light); }

/* Honors */
.honors { text-align: center; }
.honors-title {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 28px;
}
.honors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.honor-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.honor-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.honor-icon { font-size: 1.6rem; margin-bottom: 10px; }
.honor-card p { font-size: .83rem; color: var(--ink-light); line-height: 1.7; }

/* =============================================
   PHILOSOPHY
   ============================================= */
.philosophy {
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-mid) 100%);
}

.philosophy-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}
.pillar {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: background var(--transition), transform var(--transition);
}
.pillar:hover {
  background: rgba(255,255,255,.08);
  transform: translateY(-4px);
}
.pillar-num {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(201,168,76,.3);
  line-height: 1;
  margin-bottom: 12px;
}
.pillar h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.pillar p {
  font-size: .88rem;
  color: rgba(255,255,255,.65);
  line-height: 1.85;
}
.pillar strong { color: var(--gold-light); }

.philosophy-note {
  background: rgba(201,168,76,.08);
  border: 1px solid rgba(201,168,76,.2);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
}
.philosophy-note p { font-size: .88rem; color: rgba(255,255,255,.75); line-height: 1.85; }
.philosophy-note strong { color: var(--gold-light); }

/* =============================================
   COURSES
   ============================================= */
.courses { background: var(--white); }

.course-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.tab-btn {
  font-size: .88rem;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 50px;
  border: 1.5px solid var(--border);
  color: var(--ink-light);
  transition: all var(--transition);
}
.tab-btn:hover { border-color: var(--gold); color: var(--gold); }
.tab-btn.active {
  background: var(--ink);
  color: var(--white);
  border-color: var(--ink);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.course-intro {
  background: var(--cream);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 28px;
}
.course-intro h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}
.course-intro p {
  font-size: .9rem;
  color: var(--ink-light);
  line-height: 1.85;
  margin-bottom: 8px;
}

/* TOEFL format box */
.toefl-intro-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 16px;
}
.toefl-intro-box h4 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--gold-dim);
}
.toefl-intro-box p {
  font-size: .87rem;
  color: var(--ink-light);
  line-height: 1.85;
  margin-bottom: 10px;
}
.toefl-format { margin-top: 16px; }
.toefl-format h5 {
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}
.toefl-sections { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px; }
.toefl-section {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 14px;
  background: var(--cream);
  border-radius: var(--radius-sm);
  font-size: .85rem;
}
.section-name {
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
  min-width: 100px;
}
.section-detail { color: var(--ink-light); }
.toefl-note { font-size: .82rem; color: var(--ink-light); line-height: 1.8; margin-bottom: 4px; }
.toefl-note strong { color: var(--ink); }

/* Stages grid */
.stages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stage-card {
  background: var(--cream);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.stage-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.stage-card.sprint {
  background: linear-gradient(135deg, var(--dark-bg), var(--dark-mid));
  border-color: rgba(201,168,76,.2);
}
.stage-card.sprint .stage-badge.sprint { background: var(--gold); color: var(--ink); }
.stage-card.sprint .stage-target,
.stage-card.sprint .stage-items li,
.stage-card.sprint .stage-hours { color: rgba(255,255,255,.75); }

.stage-header { display: flex; flex-direction: column; gap: 6px; }
.stage-badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 3px 12px;
  border-radius: 50px;
  width: fit-content;
}
.stage-badge.foundation { background: #dbeafe; color: #1d4ed8; }
.stage-badge.improve    { background: #dcfce7; color: #15803d; }
.stage-badge.advanced   { background: #fef9c3; color: #a16207; }
.stage-badge.sprint     { background: var(--gold-dim); color: var(--ink); }
.stage-target { font-size: .78rem; color: var(--ink-light); }

.stage-items { display: flex; flex-direction: column; gap: 7px; flex: 1; }
.stage-items li {
  font-size: .8rem;
  color: var(--ink-light);
  line-height: 1.6;
  padding-left: 12px;
  position: relative;
}
.stage-items li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-size: 1.1rem;
  line-height: 1.4;
}
.stage-items strong { color: var(--ink); }

.stage-hours {
  font-size: .75rem;
  color: var(--gold);
  font-weight: 600;
  padding: 8px 10px;
  background: rgba(201,168,76,.08);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(201,168,76,.2);
  line-height: 1.5;
}

/* GRE contact CTA */
.gre-contact-cta {
  margin-top: 16px;
  padding: 20px;
  background: linear-gradient(135deg, rgba(37,99,235,.06), rgba(29,78,216,.06));
  border: 1px solid rgba(37,99,235,.2);
  border-radius: var(--radius);
  text-align: center;
}
.gre-contact-cta p { font-size: .9rem; color: var(--ink-light); margin-bottom: 14px; }

/* =============================================
   RESULTS
   ============================================= */
.results {
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-mid) 100%);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.result-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: var(--radius);
  padding: 24px 18px;
  text-align: center;
  transition: background var(--transition), transform var(--transition);
}
.result-card:hover {
  background: rgba(255,255,255,.1);
  transform: translateY(-3px);
}
.result-card.highlight {
  border-color: rgba(201,168,76,.35);
  background: rgba(201,168,76,.07);
}
.result-school {
  font-size: .85rem;
  font-weight: 700;
  color: rgba(255,255,255,.75);
  margin-bottom: 12px;
  line-height: 1.4;
}
.result-scores { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.score-badge {
  font-size: .75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 50px;
}
.score-badge.toefl { background: rgba(37,99,235,.2); color: #93c5fd; border: 1px solid rgba(37,99,235,.3); }
.score-badge.ielts { background: rgba(22,163,74,.2); color: #86efac; border: 1px solid rgba(22,163,74,.3); }
.score-badge.sat   { background: rgba(168,85,247,.2); color: #d8b4fe; border: 1px solid rgba(168,85,247,.3); }
.score-badge.act   { background: rgba(234,88,12,.2); color: #fdba74; border: 1px solid rgba(234,88,12,.3); }
.score-badge.gre   { background: rgba(201,168,76,.2); color: var(--gold-light); border: 1px solid rgba(201,168,76,.3); }

.result-note { font-size: .72rem; color: rgba(255,255,255,.45); margin-top: 8px; }

/* =============================================
   PRICING
   ============================================= */
.pricing { background: var(--cream); }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}
.price-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}
.price-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}
.price-card.popular {
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(201,168,76,.15);
}
.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold);
  color: var(--ink);
  font-size: .72rem;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: 50px;
  white-space: nowrap;
}
.price-type {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 6px;
}
.price-subject {
  font-family: 'Noto Serif SC', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 14px;
}
.price-amount {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
}
.price-amount span { font-size: .8rem; color: var(--ink-light); font-weight: 400; }
.price-features { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }
.price-features li {
  font-size: .83rem;
  color: var(--ink-light);
  display: flex;
  align-items: center;
  gap: 8px;
}
.price-features li::before { content: '✓'; color: var(--gold); font-weight: 700; }

.price-btn {
  display: block;
  text-align: center;
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: 600;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  transition: all var(--transition);
}
.price-btn:hover { background: var(--ink); color: var(--white); }
.price-btn.popular-btn { background: var(--gold); color: var(--ink); border-color: var(--gold); }
.price-btn.popular-btn:hover { background: var(--gold-light); border-color: var(--gold-light); }

.pricing-note {
  text-align: center;
  font-size: .82rem;
  color: var(--ink-light);
  font-style: italic;
}

/* =============================================
   FAQ
   ============================================= */
.faq { background: var(--white); }

.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item.open { box-shadow: var(--shadow); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 22px;
  font-size: .93rem;
  font-weight: 600;
  color: var(--ink);
  text-align: left;
  gap: 12px;
  transition: background var(--transition);
}
.faq-question:hover { background: var(--cream); }
.faq-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--cream);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 400;
  flex-shrink: 0;
  transition: background var(--transition), transform var(--transition);
}
.faq-item.open .faq-icon {
  background: var(--gold);
  color: var(--ink);
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-answer.open { max-height: 300px; }
.faq-answer p {
  padding: 0 22px 18px;
  font-size: .88rem;
  color: var(--ink-light);
  line-height: 1.85;
}

/* =============================================
   BOOKING
   ============================================= */
.booking {
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-mid) 100%);
}

.booking-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

/* Zoom embed */
.zoom-embed-wrap {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 600px;
  display: flex;
  flex-direction: column;
}
.zoom-embed-header {
  padding: 18px 24px;
  background: rgba(201,168,76,.08);
  border-bottom: 1px solid rgba(201,168,76,.15);
  display: flex;
  align-items: center;
  gap: 10px;
}
.zoom-embed-header span {
  font-size: .83rem;
  font-weight: 600;
  color: var(--gold-light);
  letter-spacing: .04em;
}
.zoom-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}
.zoom-embed-wrap iframe {
  flex: 1;
  border: none;
  width: 100%;
  min-height: 550px;
}

/* Fallback link */
.zoom-fallback {
  padding: 32px 24px;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.zoom-fallback p { font-size: .9rem; color: rgba(255,255,255,.65); line-height: 1.7; }
.zoom-fallback a.btn-primary { display: inline-block; }

/* Contact card */
.booking-contact { position: sticky; top: 100px; }
.contact-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 28px 24px;
}
.contact-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.contact-icon { font-size: 1.3rem; }
.contact-label {
  display: block;
  font-size: .72rem;
  color: rgba(255,255,255,.45);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.contact-value { font-size: .9rem; font-weight: 600; color: var(--white); }

.wechat-qr { margin: 20px 0; text-align: center; }
.qr-placeholder {
  background: rgba(255,255,255,.08);
  border: 1px dashed rgba(255,255,255,.2);
  border-radius: var(--radius-sm);
  padding: 28px;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.qr-icon {
  width: 80px; height: 80px;
  border-radius: 8px;
  background: rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  font-weight: 700;
  color: var(--gold-light);
  text-align: center;
  line-height: 1.5;
}
.qr-placeholder p { font-size: .78rem; color: rgba(255,255,255,.45); }
.contact-note { display: flex; flex-direction: column; gap: 6px; margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.08); }
.contact-note p { font-size: .8rem; color: rgba(255,255,255,.55); line-height: 1.6; }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--dark-bg);
  padding: 48px 0 24px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 36px;
  gap: 32px;
}
.footer-brand .logo-cn { font-size: 1.2rem; }
.footer-brand .logo-divider { color: rgba(255,255,255,.2); }
.footer-brand .logo-en { color: rgba(255,255,255,.6); font-size: .88rem; }
.footer-brand p {
  font-size: .82rem;
  color: rgba(255,255,255,.35);
  margin-top: 10px;
  line-height: 1.7;
}
.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
}
.footer-links a {
  font-size: .83rem;
  color: rgba(255,255,255,.45);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 20px;
  text-align: center;
}
.footer-bottom p { font-size: .78rem; color: rgba(255,255,255,.25); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 240px 1fr; gap: 36px; }
  .stages-grid { grid-template-columns: repeat(2, 1fr); }
  .results-grid { grid-template-columns: repeat(3, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .honors-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }

  /* Navbar mobile */
  .nav-toggle { display: flex; }
  .nav-right { gap: 10px; }
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    height: 100vh;
    width: 280px;
    background: var(--dark-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 32px 32px;
    gap: 20px;
    transition: right 0.3s ease;
    box-shadow: -4px 0 24px rgba(0,0,0,.3);
  }
  .nav-links.open { right: 0; }
  .nav-links a { color: rgba(255,255,255,.8); font-size: 1rem; }
  .nav-cta { margin-top: 8px; }

  .about-grid { grid-template-columns: 1fr; }
  .about-portrait { display: grid; grid-template-columns: 160px 1fr; gap: 20px; align-items: center; }
  .portrait-frame { aspect-ratio: auto; min-height: 160px; }
  .about-nickname { justify-content: flex-start; }

  .philosophy-pillars { grid-template-columns: 1fr; }
  .stages-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; }
  .honors-grid { grid-template-columns: 1fr; }

  .booking-layout { grid-template-columns: 1fr; }
  .booking-contact { position: static; }

  .hero-stats { padding: 16px 20px; gap: 0; }
  .stat { padding: 0 16px; }
  .stat-num { font-size: 1.6rem; }

  .footer-top { flex-direction: column; }
  .footer-links { gap: 16px; }

  .toefl-section { flex-direction: column; gap: 4px; }
}

@media (max-width: 480px) {
  .hero-title { flex-direction: column; gap: 4px; }
  .results-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { width: 40px; height: 1px; }
  .about-portrait { grid-template-columns: 1fr; }
  .portrait-frame { max-width: 180px; margin: 0 auto; }
}