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

:root {
  --blue: #007AFF;
  --blue-hover: #0056CC;
  --green: #34C759;
  --orange: #FF9500;
  --red: #FF3B30;
  --purple: #AF52DE;
  --gray-50: #FAFAFA;
  --gray-100: #F2F2F7;
  --gray-200: #E5E5EA;
  --gray-300: #D1D1D6;
  --gray-400: #C7C7CC;
  --gray-500: #AEAEB2;
  --gray-600: #8E8E93;
  --gray-700: #636366;
  --gray-800: #48484A;
  --gray-900: #1C1C1E;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--gray-900);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ===== Header ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,var(--header-alpha,0.72));
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: background 0.15s linear;
}
.header::after {
  content: '';
  position: absolute;
  inset: 100% 0 -12px 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.04), transparent);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.header.scrolled::after {
  opacity: 1;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-img {
  height: 50px !important;
  width: auto !important;
  max-width: 220px;
  object-fit: contain;
  background: transparent;
  border-radius: 0;
  display: block;
}

.footer-brand .logo-img {
  height: 42px !important;
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.mobile-nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(0,122,255,.12);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(245,248,255,.9));
  color: var(--gray-900);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(15,23,42,.07), inset 0 1px 0 rgba(255,255,255,.85);
  transition: background .2s ease, border-color .2s ease, color .2s ease, transform .18s ease, box-shadow .2s ease;
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav-toggle:hover {
  background: #fff;
  border-color: rgba(0,122,255,.18);
  color: var(--blue);
}

.mobile-nav-toggle:active {
  transform: scale(.96);
}

body.mobile-nav-open .mobile-nav-toggle {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg,#4F6EF7,#2F6BFF);
  box-shadow: 0 10px 24px rgba(47,107,255,.22);
}

.mobile-nav-toggle svg {
  width: 21px;
  height: 21px;
}

.mobile-nav-backdrop {
  display: none;
}

/* Product mega dropdown — full-width premium panel */
.nav-dropdown {
  position: static;
  display: contents;
}
.nav-dropdown > .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.nav-dropdown > .nav-link::after {
  content: '';
  width: 6px;
  height: 6px;
  border-right: 1.8px solid currentColor;
  border-bottom: 1.8px solid currentColor;
  transform: translateY(-1px) rotate(45deg);
  transform-origin: center;
  opacity: .72;
  transition: transform .18s ease, opacity .18s ease;
}
.nav-dropdown.open > .nav-link::after {
  transform: translateY(2px) rotate(225deg);
  opacity: 1;
}
.nav-mega-dropdown {
  position: fixed;
  left: 0;
  right: 0;
  top: 72px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all .28s cubic-bezier(0.22,0.61,0.36,1);
  z-index: 99;
  pointer-events: none;
  background: #fff;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 20px 56px rgba(0,0,0,0.06);
  overflow: hidden;
}
.nav-mega-dropdown::before,
.nav-mega-dropdown::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}
.nav-mega-dropdown::before {
  width: 600px;
  height: 600px;
  top: -280px;
  left: -160px;
  background: rgba(225, 240, 255, 0.45);
  filter: blur(110px);
  animation: megaBlob1 18s ease-in-out infinite;
}
.nav-mega-dropdown::after {
  width: 500px;
  height: 500px;
  top: 60%;
  left: 70%;
  background: rgba(215, 232, 252, 0.4);
  filter: blur(95px);
  animation: megaBlob2 15s ease-in-out infinite;
}
@keyframes megaBlob1 {
  0%   { transform: translate(0, 0); }
  20%  { transform: translate(300px, 180px); }
  40%  { transform: translate(500px, -60px); }
  60%  { transform: translate(200px, 250px); }
  80%  { transform: translate(-80px, 100px); }
  100% { transform: translate(0, 0); }
}
@keyframes megaBlob2 {
  0%   { transform: translate(0, 0); }
  25%  { transform: translate(-350px, -200px); }
  50%  { transform: translate(-500px, 80px); }
  75%  { transform: translate(-150px, -300px); }
  100% { transform: translate(0, 0); }
}
.nav-dropdown.open .nav-mega-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}
.nav-mega-inner {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 32px 36px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 36px;
}
.mega-col { display: flex; flex-direction: column; gap: 6px; }
.mega-col-title {
  font-size: .65rem; font-weight: 700; color: #94a3b8;
  text-transform: uppercase; letter-spacing: .06em;
  padding-left: 6px; margin-bottom: 2px;
}
.nav-mega-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 12px;
  text-decoration: none;
  transition: all .22s ease;
  border: none;
  background: transparent;
}
.nav-mega-card:hover {
  background: #EEF2FF;
  transform: translateX(2px);
}
.nav-mega-card.nav-mega-card-large {
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 22px 18px;
  gap: 14px;
  background: #EEF2FF;
  border-radius: 14px;
}
.nav-mega-card.nav-mega-card-large:hover {
  background: #DBE4FF;
  transform: translateX(2px);
}
.nav-mega-card.nav-mega-placeholder {
  opacity: 0.3; pointer-events: none; cursor: default;
}
.nav-mega-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  position: relative;
}
.nav-mega-icon svg { width: 17px; height: 17px; stroke-width: 1.8; }
.nav-menu-icon img {
  width: 24px;
  height: 24px;
  object-fit: contain;
  display: block;
}
.nav-mega-icon .mega-icon-out { display: block; }
.nav-mega-icon .mega-icon-fill { display: none; }
.nav-mega-card:hover .nav-mega-icon .mega-icon-out { display: none; }
.nav-mega-card:hover .nav-mega-icon .mega-icon-fill { display: block; }
.nav-mega-card.nav-mega-card-large .nav-mega-icon {
  width: 42px; height: 42px; border-radius: 10px;
}
.nav-mega-card.nav-mega-card-large .nav-mega-icon svg { width: 22px; height: 22px; }
.nav-mega-text { display: flex; flex-direction: column; gap: 2px; }
.nav-mega-title { font-size: .82rem; font-weight: 700; color: #1e293b; line-height: 1; }
.nav-mega-desc { font-size: .72rem; color: #94a3b8; line-height: 1.3; }
.nav-mega-card-svc { position: relative; padding: 18px 14px 40px !important; min-height: 110px; }
.mega-btn {
  position: absolute; bottom: 10px; right: 20px;
  font-size: .64rem; font-weight: 600; color: #4F6EF7;
  background: #EEF2FF; padding: 3px 12px; border-radius: 6px;
  transition: all .2s;
}
.nav-mega-card-svc:hover .mega-btn { background: #4F6EF7; color: #fff; }

.nav-link {
  text-decoration: none;
  color: var(--gray-600);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
  letter-spacing: 0.02em;
  line-height: 1;
}

.nav-link:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

.nav-link.nav-active {
  background: rgba(20,28,236,0.07);
  color: #141cec;
}
.nav-link.nav-active:hover {
  background: rgba(20,28,236,0.12);
  color: #141cec;
}

.nav-highlight {
  background: rgba(0,122,255,0.08);
  color: var(--blue) !important;
  font-weight: 600;
  border-radius: 8px;
  letter-spacing: 0.02em;
  padding: 8px 14px;
  font-size: 0.85rem;
  line-height: 1;
  transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.nav-highlight:hover {
  background: var(--blue) !important;
  color: #fff !important;
  box-shadow: 0 4px 14px rgba(0,122,255,0.28);
}

#navUser:not([data-nav-ready="1"]) {
  visibility: hidden;
}

#navUser {
  flex: 0 0 122px;
  width: 122px;
  min-height: 32px;
  margin-left: 88px;
  justify-content: center;
  box-sizing: border-box;
}

#navUser.nav-highlight {
  width: auto;
  min-width: auto;
  flex-basis: auto;
}

.lang-dropdown + #navUser {
  margin-left: 0;
}

/* logged-in user badge */
.nav-user {
  display: inline-flex;
  align-items: center;
  position: relative;
  gap: 7px;
  text-decoration: none;
  padding: 0;
  border-radius: 0;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1;
  color: var(--gray-800);
  background: transparent;
  justify-content: flex-end;
  transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.nav-user-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 7px;
  padding: 2px 0;
  width: 100%;
}

.nav-user .nav-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.nav-user .nav-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nav-user:hover {
  color: var(--blue);
  background: transparent;
  box-shadow: none;
}

.nav-user-name {
  max-width: 72px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-user-caret {
  color: var(--gray-400);
  transition: transform .18s ease, color .18s ease;
}

.nav-user.open .nav-user-caret,
.nav-user:hover .nav-user-caret,
.nav-user:focus-within .nav-user-caret {
  transform: rotate(180deg);
  color: var(--blue);
}

.nav-user-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 132px;
  padding: 7px;
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 14px 36px rgba(15,23,42,.12);
  z-index: 100;
}

.nav-user-menu::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -10px;
  height: 10px;
  background: transparent;
}

.nav-user[data-dropdown-ready="1"].open .nav-user-menu,
.nav-user[data-dropdown-ready="1"]:hover .nav-user-menu,
.nav-user[data-dropdown-ready="1"]:focus-within .nav-user-menu {
  display: grid;
  gap: 2px;
}

.nav-user-menu::before {
  content: '';
  position: absolute;
  top: -6px;
  right: 18px;
  width: 10px;
  height: 10px;
  background: #fff;
  border-left: 1px solid var(--gray-200);
  border-top: 1px solid var(--gray-200);
  transform: rotate(45deg);
}

.nav-user-menu-item {
  display: block;
  padding: 9px 11px;
  border-radius: 8px;
  color: var(--gray-700);
  font-size: .82rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
}

.nav-user-menu-item:hover {
  color: var(--blue);
  background: #F5F7FF;
}

.nav-user-menu-logout {
  margin-top: 3px;
  border-top: 1px solid var(--gray-100);
  color: #EF4444;
}

.nav-user-menu-logout:hover {
  color: #DC2626;
  background: #FEF2F2;
}

/* ===== Language Dropdown ===== */
.lang-dropdown {
  position: relative;
  flex: 0 0 84px;
  width: 84px;
}
.lang-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 8px 14px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  line-height: 1;
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.lang-btn:hover {
  background: var(--gray-100);
}
.lang-btn svg:not(.lang-chevron) {
  flex-shrink: 0;
  color: var(--gray-400);
}
.lang-chevron {
  flex-shrink: 0;
  color: var(--gray-400);
  transition: transform 0.2s ease;
}
.lang-dropdown.open .lang-chevron {
  transform: rotate(180deg);
}
.lang-dropdown.open .lang-btn {
  background: var(--gray-100);
}
.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  box-shadow: 0 10px 36px rgba(0,0,0,0.1);
  padding: 6px;
  min-width: 130px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.2s ease;
  z-index: 200;
}
.lang-dropdown.open .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.lang-menu a {
  display: block;
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--gray-700);
  text-decoration: none;
  transition: all 0.15s ease;
}
.lang-menu a:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}
.lang-menu a.active {
  background: rgba(0,122,255,0.07);
  color: var(--blue);
  font-weight: 600;
}

/* ===== Hero ===== */
.hero {
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(217deg, #ffffff, #eef4ff, #f5f0ff, #fef9f0, #f0faf5, #ffffff);
  background-size: 160% 160%;
  animation: heroFlow 30s ease infinite;
}
@keyframes heroFlow {
  0% { background-position: 0% 0%; }
  15% { background-position: 35% 15%; }
  28% { background-position: 65% 35%; }
  40% { background-position: 25% 55%; }
  53% { background-position: 50% 20%; }
  66% { background-position: 70% 40%; }
  78% { background-position: 15% 50%; }
  90% { background-position: 45% 60%; }
  100% { background-position: 0% 0%; }
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 36px;
  position: relative;
  z-index: 1;
  padding-top: 40px;
  padding-bottom: 40px;
}


.hero-content {
  max-width: 680px;
  animation: fadeInUp .8s cubic-bezier(0.22,0.61,0.36,1) both;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--gray-900);
}

.gradient-text {
  background: linear-gradient(135deg, #007AFF, #5856D6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 0;
  animation: fadeInUp .8s .12s cubic-bezier(0.22,0.61,0.36,1) both;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  animation: fadeInUp .8s .24s cubic-bezier(0.22,0.61,0.36,1) both;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-top: 2px;
}

/* Sign Illustration */
.hero-visual {
  flex-shrink: 0;
}

.sign-illustration {
  width: 280px;
  height: auto;
  filter: drop-shadow(0 8px 32px rgba(100,130,180,0.12));
  animation: gentlePulse 3s ease-in-out infinite;
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: -0.01em;
  box-shadow: 0 2px 8px rgba(0,122,255,0.2);
}

.btn-primary:hover {
  background: var(--blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,122,255,0.35);
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  background: var(--gray-100);
  color: var(--gray-800);
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: -0.01em;
}

.btn-secondary:hover {
  background: #fff;
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0,0,0,0.06);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  background: #fff;
  color: var(--blue);
  border: 2px solid var(--blue);
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-outline:hover {
  background: #F0F6FF;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0,122,255,0.12);
}

/* ===== Section Styles ===== */
section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  text-align: center;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--gray-500);
  text-align: center;
  margin-bottom: 48px;
}

/* ===== Upload Section ===== */
.upload-section {
  background: #fff;
}

.upload-card {
  max-width: 760px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}

/* Step Indicator */
.step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 36px;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--gray-400);
  transition: var(--transition);
}

.step-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--gray-100);
  color: var(--gray-400);
  transition: var(--transition);
}

.step.active .step-circle {
  background: var(--blue);
  color: #fff;
}

.step.active {
  color: var(--blue);
  font-weight: 600;
}

.step.completed .step-circle {
  background: var(--green);
  color: #fff;
}

.step.completed {
  color: var(--green);
}

.step-line {
  width: 60px;
  height: 2px;
  background: var(--gray-200);
  margin: 0 8px 24px;
  transition: var(--transition);
}

.step.completed + .step-line {
  background: var(--green);
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--gray-50);
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--blue);
  background: #F0F6FF;
}

.upload-icon {
  margin-bottom: 16px;
  opacity: 0.6;
}

.upload-text {
  font-size: 1.05rem;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.upload-link {
  color: var(--blue);
  font-weight: 600;
}

.upload-hint {
  font-size: 0.85rem;
  color: var(--gray-400);
}

/* File Info */
.file-info {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--gray-50);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  margin-top: 20px;
}

.file-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.file-name {
  font-weight: 600;
  color: var(--gray-900);
}

.file-size {
  font-size: 0.85rem;
  color: var(--gray-500);
}

.btn-remove {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: var(--transition);
}

.btn-remove:hover {
  background: #FFE5E5;
}

/* Certificate Selection */
.cert-selection {
  margin-top: 28px;
}

.cert-selection h3,
.sign-options h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--gray-800);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.cert-card {
  cursor: pointer;
}

.cert-card input {
  display: none;
}

.cert-card-content {
  padding: 16px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  transition: var(--transition);
}

.cert-card input:checked + .cert-card-content {
  border-color: var(--blue);
  background: #F0F6FF;
}

.cert-card-content:hover {
  border-color: var(--blue);
}

.cert-name {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.cert-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.cert-badge.free {
  background: #E8F8ED;
  color: var(--green);
}

.cert-badge.busy {
  background: #FFF3E0;
  color: var(--orange);
}

.cert-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--gray-500);
}

/* Sign Options */
.sign-options {
  margin-top: 28px;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--gray-50);
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--gray-700);
  cursor: pointer;
  transition: var(--transition);
}

.option-item:hover {
  background: var(--gray-100);
}

.option-item input[type="checkbox"] {
  accent-color: var(--blue);
  width: 16px;
  height: 16px;
}

/* Sign Button */
.btn-sign {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 28px;
  padding: 16px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: -0.2px;
}

.btn-sign:hover:not(:disabled) {
  background: var(--blue-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,122,255,0.3);
}

.btn-sign:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 480px;
  max-width: 90vw;
  box-shadow: var(--shadow-lg);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.btn-close {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  color: var(--gray-500);
  transition: var(--transition);
}

.btn-close:hover {
  background: var(--gray-100);
  color: var(--gray-800);
}

.modal-body {
  text-align: center;
}

/* Progress Ring */
.progress-ring {
  position: relative;
  display: inline-flex;
  margin-bottom: 28px;
}

.progress-ring svg circle:last-child {
  transition: stroke-dashoffset 0.5s ease;
}

.progress-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.progress-percent {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: -0.03em;
}

/* Progress Steps */
.progress-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}

.progress-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--gray-400);
  transition: var(--transition);
}

.progress-step .step-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--gray-300);
  flex-shrink: 0;
  transition: var(--transition);
}

.progress-step.active {
  color: var(--blue);
  background: #F0F6FF;
}

.progress-step.active .step-icon {
  border-color: var(--blue);
  background: var(--blue);
  animation: pulse 1.5s infinite;
}

.progress-step.completed {
  color: var(--green);
}

.progress-step.completed .step-icon {
  border-color: var(--green);
  background: var(--green);
}

.progress-step.completed .step-icon::after {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,122,255,0.4); }
  50% { box-shadow: 0 0 0 6px rgba(0,122,255,0); }
}

/* ===== Success Modal ===== */
.modal-success {
  text-align: center;
  width: 440px;
}

.success-icon {
  margin-bottom: 16px;
}

.modal-success h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--green);
  margin-bottom: 6px;
}

.success-info {
  color: var(--gray-500);
  margin-bottom: 24px;
}

.success-details {
  background: var(--gray-50);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 24px;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 0.9rem;
}

.detail-row span:first-child {
  color: var(--gray-500);
}

.detail-row span:last-child {
  font-weight: 600;
}

.detail-row + .detail-row {
  border-top: 1px solid var(--gray-200);
}

.success-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.success-actions .btn-primary,
.success-actions .btn-secondary {
  flex: 1;
  justify-content: center;
}

.install-guide {
  background: #FFF9E6;
  border-radius: var(--radius);
  padding: 16px;
  text-align: left;
}

.install-guide h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--orange);
}

.install-guide p {
  font-size: 0.85rem;
  color: var(--gray-700);
  line-height: 1.6;
}

/* ===== Features ===== */
.features-section {
  background: linear-gradient(180deg, #F9FAFB 0%, #fff 100%);
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: #fff;
  border-radius: 20px;
  padding: 36px 28px 32px;
  text-align: center;
  transition: all .35s cubic-bezier(.4,0,.2,1);
  border: 1px solid #F1F5F9;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
  opacity: 0;
  display: none;
  transition: opacity .35s;
}

.feature-card::after {
  content: '';
  position: absolute;
  width: 150px;
  height: 150px;
  right: -54px;
  top: -54px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 34%, rgba(79,110,247,.18), rgba(79,110,247,.06) 42%, transparent 70%);
  opacity: .72;
  pointer-events: none;
  transition: transform .35s ease, opacity .35s ease;
}

.feature-card:nth-child(2)::after {
  background:
    radial-gradient(circle at 34% 34%, rgba(34,197,94,.16), rgba(34,197,94,.055) 42%, transparent 70%);
}

.feature-card:nth-child(3)::after {
  background:
    radial-gradient(circle at 34% 34%, rgba(245,158,11,.17), rgba(245,158,11,.055) 42%, transparent 70%);
}

.feature-card:nth-child(4)::after {
  background:
    radial-gradient(circle at 34% 34%, rgba(236,72,153,.15), rgba(236,72,153,.052) 42%, transparent 70%);
}

.feature-card:nth-child(5)::after {
  background:
    radial-gradient(circle at 34% 34%, rgba(20,184,166,.16), rgba(20,184,166,.052) 42%, transparent 70%);
}

.feature-card:nth-child(6)::after {
  background:
    radial-gradient(circle at 34% 34%, rgba(139,92,246,.16), rgba(139,92,246,.052) 42%, transparent 70%);
}

.feature-card:hover {
  border-color: #E2E8F0;
  box-shadow: 0 20px 50px rgba(0,0,0,.06);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover::after {
  opacity: .95;
  transform: scale(1.08) translate(-3px, 3px);
}

.feature-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  transition: transform .35s;
  position: relative;
  z-index: 1;
}

.feature-card:hover .feature-icon-wrap {
  transform: scale(1.08);
}

.feature-icon-svg {
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-card-text h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.feature-card-text p {
  font-size: .85rem;
  color: var(--gray-500);
  line-height: 1.65;
  position: relative;
  z-index: 1;
}

/* Section header row */
.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
}

.view-all-link {
  font-size: 0.9rem;
  color: var(--blue);
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.15s;
}
.view-all-link:hover {
  color: var(--blue-hover);
}

/* ===== Pricing ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  background: #fff;
  border-radius: 20px;
  padding: 36px 28px 28px;
  position: relative;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  border: 1px solid transparent;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.pricing-card.featured {
  border-color: var(--blue);
  box-shadow: 0 0 0 1px var(--blue), 0 8px 32px rgba(0,122,255,0.1);
}

.pricing-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--blue), #5856D6);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.pricing-header {
  margin-bottom: 24px;
}

.pricing-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--gray-800);
}

.price {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--gray-900);
  line-height: 1;
  margin-bottom: 4px;
}

.currency {
  font-size: 1.1rem;
  font-weight: 600;
  vertical-align: top;
  margin-right: 1px;
}

.period {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-500);
}

.pricing-header p {
  font-size: 0.82rem;
  color: var(--gray-500);
  margin-top: 8px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 24px;
  text-align: left;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.88rem;
  color: var(--gray-700);
}

.pricing-features li .check {
  width: 20px;
  height: 20px;
  background: #E8F8ED;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pricing-features li .check::after {
  content: '✓';
  color: var(--green);
  font-size: 0.65rem;
  font-weight: 700;
}

.pricing-features li.disabled {
  color: var(--gray-400);
}

.pricing-features li.disabled span {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid var(--gray-300);
  flex-shrink: 0;
}

.pricing-btn {
  justify-content: center;
  border-radius: 10px;
  padding: 8px 22px;
  font-size: 0.82rem;
  cursor: pointer;
  font-weight: 600;
  font-family: inherit;
  transition: all 0.2s;
}

.pricing-card .btn-primary {
  box-shadow: 0 2px 8px rgba(0,122,255,0.18);
}

.pricing-card .btn-outline {
  background: #fff;
  border: 1.5px solid var(--gray-200);
  color: var(--gray-700);
}

.pricing-card .btn-outline:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: #F8FAFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0,0,0,0.06);
}

/* ===== History ===== */
.history-section {
  background: #fff;
}

.history-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.history-table th {
  text-align: left;
  padding: 14px 18px;
  font-weight: 600;
  color: var(--gray-500);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.history-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-800);
}

.history-table tr:last-child td {
  border-bottom: none;
}

.history-table tr:hover td {
  background: var(--gray-50);
}

.app-cell {
  display: flex;
  align-items: center;
  gap: 10px;
}

.app-avatar {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
}

.status-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
}

.status-badge.success {
  background: #E8F8ED;
  color: var(--green);
}

.status-badge.pending {
  background: #FFF3E0;
  color: var(--orange);
}

.status-badge.failed {
  background: #FDEFEC;
  color: var(--red);
}

.action-link {
  color: var(--blue);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  margin-right: 12px;
}

.action-link:hover {
  text-decoration: underline;
}

.action-link.muted {
  color: var(--gray-400);
  cursor: default;
}

.action-link.muted:hover {
  text-decoration: none;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 80px 0;
  background: var(--gray-50);
}

.faq-grid {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 1px 4px rgba(100,80,160,0.04);
  border: 1px solid rgba(140,120,200,0.08);
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 4px 20px rgba(100,80,160,0.08);
}

.faq-item.open {
  box-shadow: 0 4px 24px rgba(100,80,160,0.1);
  border-color: rgba(140,120,200,0.18);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--gray-800);
  user-select: none;
  transition: color 0.2s;
}

.faq-item.open .faq-question {
  color: var(--blue);
}

.faq-arrow {
  flex-shrink: 0;
  transition: transform 0.3s ease;
  color: var(--gray-400);
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
  color: var(--blue);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.open .faq-answer {
  max-height: 400px;
}

.faq-answer p {
  padding: 0 28px 22px;
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.75;
}

.faq-empty {
  text-align: center;
  padding: 48px;
  color: var(--gray-400);
  font-size: 0.95rem;
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  background: #fff;
  border-bottom: 1px solid var(--gray-100);
  padding: 0;
}
.breadcrumb-bar .container {
  display: flex;
  align-items: center;
  min-height: 44px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.84rem;
  color: var(--gray-400);
  padding: 10px 0;
}
.breadcrumb a {
  color: var(--gray-500);
  text-decoration: none;
  font-weight: 450;
  transition: color 0.15s;
  border-radius: 6px;
  padding: 3px 8px;
  margin: 0 -8px;
}
.breadcrumb a:hover {
  color: var(--blue);
  background: rgba(0,122,255,0.04);
}
.breadcrumb .sep {
  color: var(--gray-300);
  font-size: 0.7rem;
  flex-shrink: 0;
  user-select: none;
}
.breadcrumb .sep svg {
  display: block;
}
.breadcrumb .current {
  color: var(--gray-800);
}
/* ===== Articles ===== */
.articles-section {
  background: #fff;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.08);
  border-color: transparent;
}

.article-card-accent {
  height: 4px;
  flex-shrink: 0;
}

.article-card-body {
  padding: 24px 28px 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-summary {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-date {
  font-size: 0.78rem;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--gray-100);
}

.article-card-empty {
  text-align: center;
  padding: 48px;
  color: var(--gray-400);
  grid-column: 1 / -1;
}

@media (max-width: 640px) {
  .articles-grid { grid-template-columns: 1fr; }
}

/* ===== Footer ===== */
.footer {
  background: var(--gray-900);
  color: #fff;
  padding: 64px 0 0;
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 5%;
  right: 5%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(79,110,247,0.25), rgba(124,111,246,0.18), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: #fff;
  text-decoration: none;
}
.footer-brand .logo span {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
}
.footer-brand p {
  font-size: 0.84rem;
  color: var(--gray-500);
  line-height: 1.75;
  max-width: 250px;
}

.footer-col h4 {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gray-400);
  margin-bottom: 18px;
  letter-spacing: 0.03em;
}
.footer-col a {
  display: block;
  color: var(--gray-500);
  text-decoration: none;
  font-size: 0.84rem;
  padding: 4px 0;
  transition: color 0.2s ease;
}
.footer-col a:hover {
  color: #e0e0e0;
}

.footer-friendly {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 20px;
  text-align: center;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 22px 0 28px;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: var(--gray-600);
}
.footer-icp {
  display: block;
  margin-top: 8px;
  color: var(--gray-500);
  font-size: 0.78rem;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--gray-900);
  color: #fff;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  z-index: 2000;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  background: var(--green);
}

.toast.error {
  background: var(--red);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
    gap: 48px;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-title {
    font-size: 2.4rem;
  }

  .cert-grid {
    grid-template-columns: 1fr 1fr;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .pricing-card.featured {
    transform: none;
  }

  .pricing-card.featured:hover {
    transform: translateY(-2px);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 1.8rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .upload-card {
    padding: 24px 16px;
  }

  .step-line {
    width: 30px;
  }

  .cert-grid {
    grid-template-columns: 1fr;
  }

  .options-grid {
    grid-template-columns: 1fr 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .success-actions {
    flex-direction: column;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .mobile-nav-backdrop {
    display: block;
    position: fixed;
    top: var(--mobile-nav-top, 72px);
    right: 0;
    bottom: 0;
    left: 0;
    height: var(--mobile-nav-height, calc(100vh - 72px));
    z-index: 1001;
    background: rgba(15,23,42,.18);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, visibility .2s ease;
  }

  body.mobile-nav-open .mobile-nav-backdrop {
    opacity: 1;
    visibility: visible;
  }

  body.mobile-nav-open {
    overflow: hidden;
  }

  .nav {
    position: fixed;
    top: var(--mobile-nav-top, 72px);
    right: 0;
    bottom: 0;
    height: var(--mobile-nav-height, calc(100vh - 72px));
    max-height: var(--mobile-nav-height, calc(100vh - 72px));
    z-index: 1002;
    width: min(86vw, 340px);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 18px;
    background: rgba(255,255,255,.98);
    border-left: 1px solid rgba(0,0,0,.06);
    box-shadow: -18px 0 44px rgba(15,23,42,.12);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
    transform: translateX(100%);
    transition: transform .24s cubic-bezier(.22,.61,.36,1);
  }

  body.mobile-nav-open .nav {
    transform: translateX(0);
  }

  .nav-link,
  .lang-btn,
  .nav-highlight,
  #navUser {
    width: 100%;
    min-height: 42px;
    justify-content: flex-start;
    margin-left: 0;
    padding: 11px 12px;
    font-size: .92rem;
    line-height: 1.2;
  }

  #navUser {
    flex: 0 0 auto;
  }

  .nav-dropdown {
    display: block;
    position: relative;
  }

  .nav-dropdown > .nav-link {
    display: flex;
    justify-content: space-between;
  }

  .nav-mega-dropdown {
    position: static;
    display: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    margin: 4px 0 8px;
    border: 1px solid var(--gray-100);
    border-radius: 12px;
    box-shadow: none;
    background: #F8FAFF;
  }

  .nav-dropdown.open .nav-mega-dropdown {
    display: block;
  }

  .nav-mega-dropdown::before,
  .nav-mega-dropdown::after {
    display: none;
  }

  .nav-mega-inner {
    padding: 10px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .mega-col {
    gap: 4px;
  }

  .mega-col-title {
    padding: 8px 6px 2px;
  }

  .nav-mega-card {
    padding: 9px 8px;
    border-radius: 10px;
  }

  .lang-dropdown {
    width: 100%;
    flex: 0 0 auto;
  }

  .lang-menu {
    position: static;
    width: 100%;
    margin-top: 4px;
    box-shadow: none;
  }

  .nav-user {
    display: flex;
    justify-content: flex-start;
  }

  .nav-user-trigger {
    justify-content: flex-start;
  }

  .nav-user-menu {
    position: static;
    min-width: 0;
    width: 100%;
    margin-top: 8px;
    box-shadow: none;
  }

  .nav-user-menu::before,
  .nav-user-menu::after {
    display: none;
  }
}

@media (max-width: 900px) {
  .header .container {
    height: 68px;
    padding: 0 16px;
  }

  .logo {
    min-width: 0;
    max-width: calc(100% - 54px);
  }

  .logo-img {
    height: 42px !important;
    max-width: 168px;
  }

  .logo-text {
    max-width: 170px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 1rem;
  }

  .mobile-nav-toggle {
    display: inline-flex;
    flex: 0 0 40px;
  }

  .mobile-nav-backdrop {
    display: block;
    position: fixed;
    top: var(--mobile-nav-top, 68px);
    right: 0;
    bottom: 0;
    left: 0;
    height: var(--mobile-nav-height, calc(100vh - 68px));
    z-index: 1001;
    background: rgba(15,23,42,.16);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, visibility .2s ease;
  }

  body.mobile-nav-open {
    overflow: hidden;
  }

  body.mobile-nav-open .mobile-nav-backdrop {
    opacity: 1;
    visibility: visible;
  }

  .nav {
    position: fixed;
    top: var(--mobile-nav-top, 68px);
    right: 0;
    bottom: 0;
    height: var(--mobile-nav-height, calc(100vh - 68px));
    max-height: var(--mobile-nav-height, calc(100vh - 68px));
    z-index: 1002;
    width: min(78vw, 300px);
    min-width: 248px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 5px;
    padding: 12px;
    background: linear-gradient(180deg, rgba(255,255,255,.99), rgba(248,250,255,.99));
    border-left: 1px solid rgba(0,0,0,.06);
    box-shadow: -16px 0 42px rgba(15,23,42,.14);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
    overscroll-behavior: contain;
    contain: layout paint;
    transform: translate3d(102%,0,0);
    transition: transform .24s cubic-bezier(.22,.61,.36,1);
  }

  body.mobile-nav-open .nav {
    transform: translateX(0);
  }

  .nav-link,
  .lang-btn,
  .nav-highlight,
  #navUser {
    width: 100%;
    min-height: 38px;
    justify-content: flex-start;
    margin-left: 0;
    padding: 9px 10px;
    font-size: .88rem;
    line-height: 1.2;
  }

  #navUser {
    flex: 0 0 auto;
  }

  .nav-dropdown {
    display: block;
    position: relative;
  }

  .nav-dropdown > .nav-link {
    display: flex;
    justify-content: space-between;
    background: rgba(79,110,247,.05);
  }

  .nav-mega-dropdown {
    position: static;
    display: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    margin: 5px 0 8px;
    max-height: none;
    border: 1px solid var(--gray-100);
    border-radius: 10px;
    box-shadow: none;
    background: rgba(248,250,255,.94);
    overflow: hidden;
  }

  .nav-dropdown.open .nav-mega-dropdown {
    display: block;
  }

  .nav-mega-dropdown::before,
  .nav-mega-dropdown::after {
    display: none;
  }

  .nav-mega-inner {
    padding: 7px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .mega-col {
    gap: 3px;
  }

  .mega-col-title {
    padding: 6px 6px 1px;
    margin: 0;
    font-size: .62rem;
  }

  .nav-mega-card,
  .nav-mega-card.nav-mega-card-svc {
    min-height: auto;
    padding: 7px !important;
    border-radius: 9px;
    gap: 8px;
  }

  .nav-mega-card:hover {
    transform: none;
  }

  .nav-mega-icon {
    width: 28px;
    height: 28px;
  }

  .nav-menu-icon img {
    width: 28px;
    height: 28px;
  }

  .nav-mega-title {
    font-size: .8rem;
    line-height: 1.18;
  }

  .nav-mega-desc {
    font-size: .68rem;
    line-height: 1.25;
  }

  .mega-btn {
    position: static;
    margin-left: auto;
    padding: 3px 8px;
    font-size: .62rem;
    white-space: nowrap;
  }

  .lang-dropdown {
    width: 100%;
    flex: 0 0 auto;
  }

  .lang-menu {
    position: static;
    width: 100%;
    margin-top: 4px;
    box-shadow: none;
  }

  .nav-user {
    display: flex;
    justify-content: flex-start;
  }

  .nav-user-trigger {
    justify-content: flex-start;
  }

  .nav-user-menu {
    position: static;
    min-width: 0;
    width: 100%;
    margin-top: 8px;
    box-shadow: none;
  }

  .nav-user-menu::before,
  .nav-user-menu::after {
    display: none;
  }
}

/* ===== Hero Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes gentlePulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.04);
  }
}