/* ============================================================
   DESIGN SYSTEM — Tesla-Inspired × Alliance Adaptation
   ============================================================ */

/* COLOR TOKENS */
:root {
  --c-navy:      #1a3a5c;
  --c-navy-dark: #0f2540;
  --c-gold:      #c8a96e;
  --c-wine:      #8b2635;

  --c-white:     #ffffff;
  --c-ash:       #f5f5f5;
  --c-carbon:    #171a20;
  --c-graphite:  #393c41;
  --c-pewter:    #5c5e62;
  --c-silver:    #8e8e8e;
  --c-cloud:     #eeeeee;
  --c-pearl:     #d0d1d2;
  --c-glass:     rgba(255,255,255,0.82);

  --sp-1: 0.5rem;
  --sp-2: 1rem;
  --sp-3: 1.5rem;
  --sp-4: 2rem;
  --sp-6: 3rem;
  --sp-8: 4rem;
  --sp-12: 6rem;
  --sp-16: 8rem;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Inter', -apple-system, Arial, sans-serif;
  --font-chinese: 'Noto Serif SC', 'SimSun', serif;

  --t: 0.33s cubic-bezier(0.5, 0, 0, 0.75);

  --r-btn: 4px;
  --r-card: 12px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--c-graphite);
  line-height: 1.43;
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
::selection { background: var(--c-navy); color: var(--c-white); }

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 var(--sp-4);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--t), box-shadow var(--t);
}

.site-nav.scrolled {
  background: var(--c-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--c-cloud);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.nav-logo {
  height: 40px;
  width: auto;
  flex-shrink: 0;
}

.nav-wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-wordmark-cn {
  font-family: var(--font-chinese);
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-white);
  letter-spacing: 0.02em;
  transition: color var(--t);
}

.nav-wordmark-en {
  font-family: var(--font-body);
  font-size: 0.5625rem;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color var(--t);
}

/* 滚动时的品牌文字颜色 */
.site-nav.scrolled .nav-wordmark-cn {
  color: var(--c-carbon);
}

.site-nav.scrolled .nav-wordmark-en {
  color: var(--c-pewter);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.nav-link {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--c-white);
  padding: var(--sp-1) 0.75rem;
  border-radius: var(--r-btn);
  transition: color var(--t), background-color var(--t);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--c-gold);
  background: rgba(255,255,255,0.1);
}

.nav-link.highlight { color: var(--c-gold); }

/* 滚动时的文字颜色 */
.site-nav.scrolled .nav-link {
  color: var(--c-carbon);
}

.site-nav.scrolled .nav-link:hover {
  color: var(--c-navy);
  background: rgba(26,58,92,0.05);
}

.site-nav.scrolled .nav-link.highlight {
  color: var(--c-navy);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  background: var(--c-navy);
  color: var(--c-white);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: var(--r-btn);
  transition: background-color var(--t);
  margin-left: var(--sp-2);
}

.nav-cta:hover { background: var(--c-navy-dark); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-carbon);
  border-radius: 1px;
  transition: transform var(--t), opacity var(--t);
}

.nav-mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--c-white);
  z-index: 999;
  flex-direction: column;
  padding: 80px var(--sp-4) var(--sp-6);
  gap: var(--sp-2);
}

.nav-mobile.open { display: flex; }

.nav-mobile a {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--c-carbon);
  padding: var(--sp-2) 0;
  border-bottom: 1px solid var(--c-cloud);
}

.nav-mobile .nav-cta { margin: var(--sp-3) 0 0; width: 100%; justify-content: center; }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    165deg,
    rgba(15, 37, 64, 0.72) 0%,
    rgba(26, 58, 92, 0.55) 40%,
    rgba(15, 37, 64, 0.78) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--c-white);
  padding: 0 var(--sp-4);
  max-width: 860px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(200, 169, 110, 0.18);
  border: 1px solid rgba(200, 169, 110, 0.45);
  border-radius: 2rem;
  padding: 0.375rem 1rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--c-gold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}

.hero-badge-dot {
  width: 6px; height: 6px;
  background: var(--c-gold);
  border-radius: 50%;
}

.hero-title-en {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  margin-bottom: var(--sp-2);
}

.hero-title-cn {
  font-family: var(--font-chinese);
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-white);
  margin-bottom: var(--sp-2);
  letter-spacing: 0.04em;
}

.hero-title-sub {
  font-family: var(--font-chinese);
  font-size: clamp(1rem, 2.5vw, 1.375rem);
  font-weight: 400;
  color: rgba(255,255,255,0.78);
  margin-bottom: var(--sp-6);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-navy);
  color: var(--c-white);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.75rem 2rem;
  border-radius: var(--r-btn);
  min-height: 40px;
  min-width: 180px;
  transition: background-color var(--t), transform var(--t);
}

.btn-primary:hover { background: var(--c-navy-dark); transform: translateY(-1px); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.40);
  color: var(--c-white);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.75rem 2rem;
  border-radius: var(--r-btn);
  min-height: 40px;
  min-width: 160px;
  backdrop-filter: blur(4px);
  transition: background-color var(--t), border-color var(--t), transform var(--t);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.20);
  border-color: rgba(255,255,255,0.65);
  transform: translateY(-1px);
}

.hero-scroll-hint {
  position: absolute;
  bottom: var(--sp-4);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
  color: rgba(255,255,255,0.45);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-scroll-line {
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.45), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  51%  { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  background: var(--c-carbon);
  padding: var(--sp-6) var(--sp-4);
}

.stats-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: var(--sp-3) var(--sp-2);
  position: relative;
}

.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 1px;
  background: rgba(255,255,255,0.12);
}

.stat-number {
  font-family: var(--font-body);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--c-white);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-number span { color: var(--c-gold); }

.stat-label {
  font-size: 0.75rem;
  font-weight: 400;
  color: rgba(255,255,255,0.50);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ============================================================
   SECTION COMMON
   ============================================================ */
.section { padding: var(--sp-16) var(--sp-4); }
.section-sm { padding: var(--sp-12) var(--sp-4); }
.section-ash { background: var(--c-ash); }
.section-dark { background: var(--c-carbon); }
.section-navy { background: var(--c-navy); }
.section-light { background: var(--c-white); }
.container { max-width: 1200px; margin: 0 auto; }

.container-narrow {
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
}

.section-eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-2);
}

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

.section-title {
  font-family: var(--font-chinese);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--c-carbon);
  line-height: 1.25;
  margin-bottom: var(--sp-2);
  letter-spacing: 0.01em;
}

.section-dark .section-title { color: var(--c-white); }

.section-subtitle {
  font-size: 1rem;
  color: var(--c-pewter);
  line-height: 1.7;
  max-width: 600px;
}

.section-dark .section-subtitle { color: rgba(255,255,255,0.55); }
.section-subtitle.center { margin: 1rem auto 0; text-align: center; }

/* ============================================================ 
   MISSION SECTION
   ============================================================ */
.mission {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: center;
  margin-top: var(--sp-8);
}

.mission-text p {
  font-size: 1rem;
  color: var(--c-graphite);
  line-height: 1.9;
  margin-bottom: var(--sp-3);
}

.mission-text p:last-child { margin-bottom: 0; }

.mission-image {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-card);
  aspect-ratio: 4/3;
}

.mission-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.mission-image:hover img { transform: scale(1.03); }

.mission-image-accent {
  position: absolute;
  bottom: -1px; right: -1px;
  width: 160px;
  height: 120px;
  background: var(--c-gold);
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
  z-index: 1;
}

/* ============================================================
   SERVICE CARDS
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
  margin-top: var(--sp-8);
}

.service-card {
  border-radius: var(--r-card);
  overflow: hidden;
  position: relative;
  aspect-ratio: 3/4;
  cursor: pointer;
}

.service-card-bg {
  position: absolute;
  inset: 0;
}

.service-card-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.service-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(15, 37, 64, 0.20) 0%,
    rgba(15, 37, 64, 0.82) 100%
  );
  transition: background var(--t);
}

.service-card:hover .service-card-overlay {
  background: linear-gradient(
    to bottom,
    rgba(15, 37, 64, 0.35) 0%,
    rgba(15, 37, 64, 0.92) 100%
  );
}

.service-card:hover .service-card-bg img { transform: scale(1.04); }

.service-card-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--sp-4);
  color: var(--c-white);
}

.service-card-icon {
  width: 44px; height: 44px;
  background: rgba(200,169,110,0.20);
  border: 1px solid rgba(200,169,110,0.40);
  border-radius: var(--r-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-3);
  font-size: 1.25rem;
  transition: background var(--t), transform var(--t);
}

.service-card:hover .service-card-icon {
  background: rgba(200,169,110,0.30);
  transform: translateY(-2px);
}

.service-card-title {
  font-family: var(--font-chinese);
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
  letter-spacing: 0.02em;
}

.service-card-title-en {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-2);
}

.service-card-desc {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.65;
  margin-bottom: var(--sp-3);
}

.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--c-gold);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--t), transform var(--t);
}

.service-card:hover .service-card-link {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   COURSES SECTION
   ============================================================ */
.courses-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  margin-top: var(--sp-8);
}

.course-card {
  border-radius: var(--r-card);
  overflow: hidden;
  position: relative;
  aspect-ratio: 16/9;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.course-card-bg {
  position: absolute;
  inset: 0;
}

.course-card-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.course-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(139, 38, 53, 0.85) 0%,
    rgba(15, 37, 64, 0.88) 100%
  );
  transition: background var(--t);
}

.course-card:hover .course-card-overlay {
  background: linear-gradient(
    135deg,
    rgba(139, 38, 53, 0.75) 0%,
    rgba(15, 37, 64, 0.78) 100%
  );
}

.course-card:hover .course-card-bg img { transform: scale(1.04); }

.course-card-content {
  position: relative;
  z-index: 1;
  padding: var(--sp-4) var(--sp-6);
  display: flex;
  flex-direction: column;
  height: 100%;
  justify-content: flex-end;
}

.course-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: rgba(200,169,110,0.20);
  border: 1px solid rgba(200,169,110,0.45);
  border-radius: 2rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--c-gold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
  width: fit-content;
}

.course-card-title {
  font-family: var(--font-chinese);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 0.375rem;
  letter-spacing: 0.02em;
}

.course-card-org {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(255,255,255,0.60);
  letter-spacing: 0.04em;
  margin-bottom: var(--sp-2);
}

.course-card-desc {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.68);
  line-height: 1.65;
  margin-bottom: var(--sp-3);
}

.course-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--sp-3);
}

.course-tag {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.20);
  border-radius: 2rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.6875rem;
  font-weight: 400;
  color: rgba(255,255,255,0.78);
}

.course-card-actions {
  display: flex;
  gap: var(--sp-2);
  align-items: center;
}

.course-btn-primary {
  display: inline-flex;
  align-items: center;
  background: var(--c-gold);
  color: var(--c-carbon);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: var(--r-btn);
  min-height: 36px;
  transition: background var(--t), transform var(--t);
}

.course-btn-primary:hover { background: #d4b87a; transform: translateY(-1px); }

.course-btn-text {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: rgba(255,255,255,0.70);
  transition: color var(--t);
}

.course-btn-text:hover { color: var(--c-white); }

/* ============================================================
   NEWS SECTION
   ============================================================ */
.news-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--sp-6);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}

.news-card {
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--c-white);
  transition: box-shadow var(--t), transform var(--t);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  transform: translateY(-3px);
}

.news-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--c-ash);
}

.news-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-card:hover .news-card-img img { transform: scale(1.05); }

.news-card-body {
  padding: var(--sp-3);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-2);
}

.news-tag {
  background: var(--c-ash);
  color: var(--c-navy);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  border-radius: 2px;
}

.news-tag.wine { background: rgba(139,38,53,0.08); color: var(--c-wine); }
.news-tag.gold { background: rgba(200,169,110,0.12); color: #9a7d4a; }

.news-date { font-size: 0.6875rem; color: var(--c-silver); }

.news-card-title {
  font-family: var(--font-chinese);
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-carbon);
  line-height: 1.5;
  margin-bottom: var(--sp-2);
  flex: 1;
  transition: color var(--t);
}

.news-card:hover .news-card-title { color: var(--c-navy); }

.news-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-2);
  border-top: 1px solid var(--c-cloud);
  margin-top: auto;
}

.news-author { font-size: 0.6875rem; color: var(--c-pewter); }

.news-read-link {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--c-navy);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: gap var(--t);
}

.news-card:hover .news-read-link { gap: 0.5rem; }

.news-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-navy);
  transition: gap var(--t);
}

.news-more:hover { gap: 0.75rem; }

/* ============================================================
   MEMBERS LOGO WALL
   ============================================================ */
.members-section {
  padding: var(--sp-12) 0;
  overflow: hidden;
}

.members-track-wrapper {
  position: relative;
  margin-top: var(--sp-8);
}

.members-track-wrapper::before,
.members-track-wrapper::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
}

.members-track-wrapper::before {
  left: 0;
  background: linear-gradient(to right, var(--c-ash), transparent);
}

.members-track-wrapper::after {
  right: 0;
  background: linear-gradient(to left, var(--c-ash), transparent);
}

.members-track {
  display: flex;
  gap: var(--sp-6);
  animation: scrollLogos 28s linear infinite;
  width: max-content;
}

.members-track:hover { animation-play-state: paused; }

@keyframes scrollLogos {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.member-logo-item {
  flex-shrink: 0;
  width: 140px;
  height: 70px;
  background: var(--c-white);
  border: 1px solid var(--c-cloud);
  border-radius: var(--r-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-2);
  transition: border-color var(--t), box-shadow var(--t);
}

.member-logo-item:hover {
  border-color: var(--c-pearl);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.member-logo-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(20%);
  opacity: 0.7;
  transition: filter var(--t), opacity var(--t);
}

.member-logo-item:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

.member-logo-placeholder {
  font-family: var(--font-chinese);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--c-pewter);
  text-align: center;
  line-height: 1.4;
}

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner {
  position: relative;
  overflow: hidden;
  padding: var(--sp-16) var(--sp-4);
  text-align: center;
}

.cta-banner-bg {
  position: absolute;
  inset: 0;
}

.cta-banner-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
}

.cta-banner-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 37, 64, 0.88);
}

.cta-banner-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
}

.cta-banner-title {
  font-family: var(--font-chinese);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: var(--sp-3);
  line-height: 1.3;
}

.cta-banner-sub {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: var(--sp-6);
  line-height: 1.7;
}

.cta-banner-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.btn-gold {
  display: inline-flex;
  align-items: center;
  background: var(--c-gold);
  color: var(--c-carbon);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.875rem 2.25rem;
  border-radius: var(--r-btn);
  min-height: 44px;
  transition: background var(--t), transform var(--t);
}

.btn-gold:hover { background: #d4b87a; transform: translateY(-1px); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(255,255,255,0.35);
  color: var(--c-white);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.875rem 2.25rem;
  border-radius: var(--r-btn);
  min-height: 44px;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(4px);
  transition: background var(--t), border-color var(--t), transform var(--t);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.55);
  transform: translateY(-1px);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--c-carbon);
  color: var(--c-white);
}

.footer-main { padding: var(--sp-12) var(--sp-4); }

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--sp-8);
}

.footer-brand p {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.48);
  line-height: 1.8;
  margin-top: var(--sp-3);
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.footer-social-link {
  width: 36px; height: 36px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--r-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  transition: border-color var(--t), color var(--t), background var(--t);
}

.footer-social-link:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
  background: rgba(200,169,110,0.08);
}

.footer-col-title {
  font-family: var(--font-chinese);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-white);
  margin-bottom: var(--sp-3);
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.48);
  transition: color var(--t);
}

.footer-link:hover { color: rgba(255,255,255,0.85); }
.footer-link.accent { color: var(--c-gold); }
.footer-link.accent:hover { color: #d4b87a; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--sp-4);
}

.footer-bottom-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.30);
}

.footer-legal {
  display: flex;
  gap: var(--sp-3);
}

.footer-legal a {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.30);
  transition: color var(--t);
}

.footer-legal a:hover { color: rgba(255,255,255,0.65); }

/* ============================================================
   CHAT BAR
   ============================================================ */
.chat-bar {
  position: fixed;
  bottom: var(--sp-4);
  right: var(--sp-4);
  z-index: 900;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  background: var(--c-white);
  border: 1px solid var(--c-cloud);
  border-radius: var(--r-card);
  padding: 0.625rem 0.75rem 0.625rem 1rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  transition: box-shadow var(--t), transform var(--t);
}

.chat-bar:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,0.16);
  transform: translateY(-2px);
}

.chat-bar-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--c-carbon);
}

.chat-bar-cta {
  display: inline-flex;
  align-items: center;
  background: var(--c-navy);
  color: var(--c-white);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.375rem 0.875rem;
  border-radius: var(--r-btn);
  transition: background var(--t);
}

.chat-bar-cta:hover { background: var(--c-navy-dark); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); gap: var(--sp-3); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .stats-inner { grid-template-columns: repeat(3, 1fr); }
  .stat-item:nth-child(4)::before,
  .stat-item:nth-child(5)::before { display: none; }

  .mission { grid-template-columns: 1fr; gap: var(--sp-6); }
  .mission-image { order: -1; }

  .services-grid { grid-template-columns: 1fr; }
  .service-card { aspect-ratio: 16/9; }

  .courses-grid { grid-template-columns: 1fr; }
  .course-card { aspect-ratio: 4/3; }

  .news-grid { grid-template-columns: 1fr; }
  .news-header { flex-direction: column; align-items: flex-start; gap: var(--sp-2); }

  .footer-inner { grid-template-columns: 1fr; gap: var(--sp-6); }
  .footer-bottom-inner { flex-direction: column; align-items: flex-start; }

  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary { width: 100%; max-width: 280px; }

  .cta-banner-actions { flex-direction: column; }
  .btn-gold,
  .btn-outline { width: 100%; max-width: 280px; justify-content: center; }

  .chat-bar { bottom: var(--sp-2); right: var(--sp-2); }
}

@media (max-width: 480px) {
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2n+1)::before { display: none; }
}

/* FOCUS */
*:focus-visible {
  outline: 2px solid var(--c-navy);
  outline-offset: 3px;
  border-radius: 2px;
}

.icon {
  display: inline-block;
  width: 1em; height: 1em;
  vertical-align: middle;
}