/* ════════════════════════════════════════
   UPMHub · Light Design System
   Inspired by Apple
════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root {
  /* ── Surfaces ── */
  --bg:        #ffffff;
  --bg-1:      #f5f5f7;
  --bg-2:      #ffffff;
  --bg-3:      #f0f0f2;
  --bg-4:      #e8e8ed;

  /* ── Borders ── */
  --border:    rgba(0,0,0,.07);
  --border-2:  rgba(0,0,0,.12);
  --border-3:  rgba(0,0,0,.20);

  /* ── Text ── */
  --text:      #1d1d1f;
  --text-2:    #424245;
  --text-3:    #6e6e73;
  --text-4:    #a1a1a6;

  /* ── Accent (Apple blue) ── */
  --accent:        #0071e3;
  --accent-hover:  #0077ed;
  --accent-dim:    rgba(0,113,227,.08);
  --accent-glow:   rgba(0,113,227,.16);

  /* ── Semantic ── */
  --green:     #28cd41;
  --green-dim: rgba(40,205,65,.08);
  --red:       #ff3b30;
  --red-dim:   rgba(255,59,48,.08);
  --amber:     #ff9500;
  --amber-dim: rgba(255,149,0,.09);
  --cyan:      #32ade6;
  --cyan-dim:  rgba(50,173,230,.08);

  /* ── Radius ── */
  --r-xs: 6px;
  --r-sm: 10px;
  --r:    14px;
  --r-lg: 20px;
  --r-xl: 28px;

  /* ── Shadows (very restrained) ── */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 0 0 1px rgba(0,0,0,.04);
  --shadow:    0 4px 14px rgba(0,0,0,.08), 0 1px 3px rgba(0,0,0,.04);
  --shadow-md: 0 8px 28px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.05);
  --shadow-lg: 0 20px 52px rgba(0,0,0,.12), 0 4px 16px rgba(0,0,0,.07);
  --glow:      0 0 0 3px var(--accent-dim);

  /* ── Motion ── */
  --ease:        cubic-bezier(.4,0,.2,1);
  --ease-out:    cubic-bezier(0,0,.2,1);
  --ease-spring: cubic-bezier(.34,1.56,.64,1);
  --dur:         .16s;
  --dur-md:      .28s;

  /* ── Layout ── */
  --nav-h: 60px;

  /* Legacy aliases */
  --card-bg:   var(--bg-2);
  --gray-100:  var(--bg-3);
  --gray-200:  var(--border);
  --gray-400:  var(--text-3);
  --gray-500:  var(--text-2);
  --radius:    var(--r);
  --radius-xs: var(--r-xs);
  --radius-sm: var(--r-sm);
  --radius-lg: var(--r-lg);
  --radius-xl: var(--r-xl);
  --shadow-md: 0 8px 28px rgba(0,0,0,.10);
  --dur-md:    .28s;
}

/* ══════════════════════════════
   RESET
══════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont,
               'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 15px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main { flex: 1; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: 15px; }

/* ══════════════════════════════
   UTILITY
══════════════════════════════ */
.hidden { display: none !important; }
.container        { max-width: 1200px; margin: 0 auto; padding: 32px 20px; }
.container-narrow { max-width: 760px; }

/* ══════════════════════════════
   NAVBAR
══════════════════════════════ */
.navbar {
  position: sticky; top: 0; z-index: 200;
  height: var(--nav-h);
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid rgba(0,0,0,.08);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; height: 100%;
  display: flex; align-items: center; gap: 8px; padding: 0 20px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 17px; letter-spacing: -.3px;
  margin-right: 8px; flex-shrink: 0;
}
.logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, #0071e3, #32ade6);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; flex-shrink: 0;
}
.logo-text { color: var(--text); }

.nav-links {
  display: flex; align-items: center; gap: 2px; flex: 1;
}
.nav-link {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: var(--r-sm);
  font-size: 14px; font-weight: 500; color: var(--text-3);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-link:hover { background: rgba(0,0,0,.04); color: var(--text); }
.nav-link.active { background: var(--accent-dim); color: var(--accent); }

.nav-right {
  display: flex; align-items: center; gap: 8px; margin-left: auto;
}
#nav-auth { display: flex; align-items: center; gap: 8px; }
#nav-user { display: flex; align-items: center; }

.nav-avatar-wrap {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 8px; border-radius: var(--r-sm);
  cursor: pointer; position: relative;
  transition: background var(--dur) var(--ease);
}
.nav-avatar-wrap:hover { background: rgba(0,0,0,.04); }
.nav-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  object-fit: cover; border: 1.5px solid var(--border-2);
}
.nav-nickname { font-size: 14px; font-weight: 500; color: var(--text); }
.nav-arrow { color: var(--text-4); font-size: 11px; }

.user-menu {
  position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--bg); border: 1px solid var(--border-2);
  border-radius: var(--r-sm); padding: 6px;
  box-shadow: var(--shadow-md); min-width: 160px;
  animation: menuIn .15s var(--ease-out);
}
@keyframes menuIn { from { opacity:0; transform:translateY(-6px); } to { opacity:1; transform:translateY(0); } }
.user-menu a {
  display: block; padding: 8px 12px; border-radius: 6px;
  font-size: 14px; color: var(--text-2);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.user-menu a:hover { background: rgba(0,0,0,.04); color: var(--text); }
.user-menu hr { border: none; border-top: 1px solid var(--border); margin: 4px 0; }

/* ── Nav dropdowns ── */
.nav-dropdown { position: relative; }
.nav-dd-trigger {
  background: none; border: none;
  display: flex; align-items: center; gap: 5px;
  padding: 6px 12px; border-radius: var(--r-sm);
  font-size: 14px; font-weight: 500; color: var(--text-3);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  cursor: pointer;
}
.nav-dd-trigger:hover { background: rgba(0,0,0,.04); color: var(--text); }
.nav-dd-trigger.active { background: var(--accent-dim); color: var(--accent); }
.nav-dd-arrow {
  font-size: 10px; opacity: .7;
  transition: transform var(--dur) var(--ease);
  display: inline-block;
}
.nav-dd-trigger[aria-expanded="true"] .nav-dd-arrow { transform: rotate(180deg); }
.nav-dropdown-menu {
  position: absolute; top: calc(100% + 6px); left: 0;
  background: var(--bg); border: 1px solid var(--border-2);
  border-radius: var(--r-sm); padding: 6px;
  box-shadow: var(--shadow-md); min-width: 170px; z-index: 300;
  animation: menuIn .15s var(--ease-out);
}
.nav-dropdown-item {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 12px; border-radius: 6px;
  font-size: 14px; color: var(--text-2);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-dropdown-item:hover { background: rgba(0,0,0,.04); color: var(--text); }
.nav-dropdown-item.active { color: var(--accent); }

/* ── Mobile nav section labels ── */
.mobile-nav-section-label {
  padding: 10px 12px 4px;
  font-size: 11px; font-weight: 700; letter-spacing: .07em;
  color: var(--text-4); text-transform: uppercase;
}

.hamburger {
  display: none;
  background: none; border: none;
  color: var(--text-3); font-size: 20px;
  padding: 6px; border-radius: var(--r-xs);
  transition: background var(--dur) var(--ease);
  margin-left: auto;
}
.hamburger:hover { background: rgba(0,0,0,.04); }

.mobile-nav {
  position: fixed; top: var(--nav-h); left: 0; right: 0;
  background: rgba(255,255,255,.97); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px 20px; z-index: 199;
}
.mobile-nav-link {
  display: block; padding: 11px 12px;
  font-size: 15px; color: var(--text-2);
  border-radius: var(--r-sm);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.mobile-nav-link:hover { background: rgba(0,0,0,.04); color: var(--text); }
.mobile-fx {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 12px;
  font-size: 13px;
}
.mobile-fx-pair { color: var(--text-3); font-weight: 500; }
.mobile-fx-rate { font-weight: 700; color: var(--accent); }
#mobile-auth-links, #mobile-user-links { display: flex; flex-direction: column; gap: 4px; }
#mobile-auth-links a, #mobile-user-links a {
  display: block; padding: 10px 12px;
  font-size: 14px; color: var(--text-2);
  border-radius: var(--r-sm);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
#mobile-auth-links a:hover, #mobile-user-links a:hover {
  background: rgba(0,0,0,.04); color: var(--text);
}

/* ══════════════════════════════
   BUTTONS
══════════════════════════════ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--r-sm);
  font-size: 14px; font-weight: 600;
  border: none; cursor: pointer;
  transition: all var(--dur) var(--ease);
  white-space: nowrap; letter-spacing: -.1px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 1px 2px rgba(0,113,227,.2);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0,113,227,.28);
}
.btn-outline {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border-2);
}
.btn-outline:hover {
  background: rgba(0,0,0,.04);
  color: var(--text);
  border-color: var(--border-3);
}
.btn-danger {
  background: var(--red-dim);
  color: var(--red);
  border: 1px solid rgba(255,59,48,.2);
}
.btn-danger:hover { background: rgba(255,59,48,.13); }
.btn-white {
  background: #fff; color: #1d1d1f;
  border: 1px solid var(--border-2);
}
.btn-white:hover { background: var(--bg-3); transform: translateY(-1px); }
.btn-outline-white {
  background: transparent; color: #fff;
  border: 1px solid rgba(255,255,255,.4);
}
.btn-outline-white:hover { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.6); }
.btn-sm    { padding: 6px 12px; font-size: 13px; }
.btn-lg    { padding: 11px 24px; font-size: 15px; }
.btn-block { width: 100%; justify-content: center; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none !important; }

/* ══════════════════════════════
   ALERT / TOAST
══════════════════════════════ */
.alert-container {
  position: fixed; top: 76px; right: 20px; z-index: 9999;
  display: flex; flex-direction: column; gap: 8px; width: 320px;
}
.alert {
  padding: 13px 16px; border-radius: var(--r-sm);
  font-size: 14px; font-weight: 500;
  background: var(--bg); border: 1px solid var(--border-2);
  color: var(--text);
  animation: alertIn .2s var(--ease-out);
  box-shadow: var(--shadow-md);
}
@keyframes alertIn { from { opacity:0; transform:translateX(20px); } to { opacity:1; transform:translateX(0); } }
.alert-success { border-color: rgba(40,205,65,.3); color: #1a7f32; background: var(--green-dim); }
.alert-error   { border-color: rgba(255,59,48,.3); color: var(--red); background: var(--red-dim); }
.alert-info    { border-color: var(--border-2); }

/* ══════════════════════════════
   HERO
══════════════════════════════ */
.hero {
  position: relative; overflow: hidden;
  background: var(--bg-1);
  padding: 60px 20px 80px;
  text-align: center;
}
/* Subtle ambient color */
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 15% 110%, rgba(0,113,227,.07) 0%, transparent 60%),
    radial-gradient(ellipse 55% 45% at 85% -5%, rgba(50,173,230,.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(0,113,227,.03) 0%, transparent 70%);
  pointer-events: none;
}
/* Dot grid */
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(0,0,0,.07) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}
.hero-inner { position: relative; z-index: 1; max-width: 900px; margin: 0 auto; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,113,227,.07);
  border: 1px solid rgba(0,113,227,.15);
  border-radius: 999px;
  padding: 4px 12px; font-size: 12px; font-weight: 500; color: var(--accent);
  margin-bottom: 18px; letter-spacing: .2px;
}
.hero h1 {
  font-size: clamp(1.6rem, 4.5vw, 2.8rem);
  font-weight: 700; line-height: 1.15;
  letter-spacing: -.04em;
  margin-bottom: 12px;
}
.hero h1 .brand {
  color: var(--text);
}
.hero h1 strong {
  background: linear-gradient(135deg, var(--accent) 0%, var(--cyan) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p {
  font-size: clamp(13px, 1.6vw, 15px); color: var(--text-3);
  margin-bottom: 24px; line-height: 1.65;
}
.hero-groups {
  display: flex; flex-direction: row; align-items: stretch; gap: 10px;
  width: 100%; justify-content: center;
}
.hero-group {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: rgba(255,255,255,.65);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 14px;
  padding: 12px 16px;
  flex: 1; min-width: 0;
  box-shadow: 0 1px 8px rgba(0,0,0,.05);
}
.hero-group-label {
  display: flex; align-items: center; gap: 5px;
  font-size: 10px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
  color: var(--text-3);
  width: 100%; padding-bottom: 8px;
  border-bottom: 1px solid rgba(0,0,0,.06);
}
.hero-btns {
  display: flex; align-items: center; justify-content: center;
  gap: 6px; flex-wrap: wrap;
}
.hero-btns .btn-lg { padding: 8px 14px; font-size: 13px; }
.hero-wave {
  position: absolute; bottom: -1px; left: 0; right: 0; pointer-events: none;
}
.hero-wave svg { width: 100%; height: 60px; }

/* Stats strip */
.hero-stats {
  background: var(--bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 20px;
}
.hero-stats-inner {
  max-width: 700px; margin: 0 auto;
  display: flex; justify-content: center; gap: 0;
}
.stat-pill {
  text-align: center; flex: 1; padding: 8px 16px;
  border-right: 1px solid var(--border);
}
.stat-pill:last-child { border-right: none; }
.stat-num {
  font-size: 22px; font-weight: 700; letter-spacing: -.03em;
  color: var(--text);
}
.stat-lbl { font-size: 12px; color: var(--text-4); margin-top: 2px; font-weight: 500; }

/* ══════════════════════════════
   NAVBAR FX RATE
══════════════════════════════ */
.nav-fx {
  display: flex; align-items: center; gap: 5px;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  background: var(--accent-dim);
  font-size: 12px;
  white-space: nowrap;
}
.nav-fx-pair {
  color: var(--text-3); font-weight: 500;
}
.nav-fx-rate {
  font-weight: 700; color: var(--accent); letter-spacing: -.01em;
}
.nav-fx-time {
  color: var(--text-4); font-size: 11px;
}
@media (max-width: 768px) {
  .nav-fx-time { display: none; }
}
@media (max-width: 480px) {
  .nav-fx { padding: 3px 7px; }
  .nav-fx-pair { display: none; }
  #nav-auth .btn-sm { padding: 4px 8px; font-size: 12px; }
}

/* ══════════════════════════════
   SECTION PREVIEW (Homepage)
══════════════════════════════ */
.section-preview {
  margin-bottom: 56px;
}
.section-preview-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}
.section-preview-title { display: flex; align-items: center; gap: 14px; }
.section-icon {
  width: 44px; height: 44px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.section-preview-title h2 {
  font-size: 18px; font-weight: 700; letter-spacing: -.02em;
}
.section-preview-title p { font-size: 13px; color: var(--text-3); margin-top: 2px; }
.section-preview-footer { margin-top: 16px; }
.preview-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.preview-list { display: flex; flex-direction: column; gap: 8px; }
.preview-loading { display: flex; justify-content: center; padding: 40px; }
.preview-empty { color: var(--text-3); font-size: 14px; padding: 24px 0; }
.preview-empty a { color: var(--accent); }

/* Tools card grid */
.tools-card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.tools-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r); padding: 18px 20px;
  text-decoration: none; color: inherit;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), transform var(--dur-md) var(--ease-spring), box-shadow var(--dur-md) var(--ease);
}
.tools-card:hover {
  border-color: var(--accent); transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.tools-card-icon { font-size: 32px; flex-shrink: 0; line-height: 1; }
.tools-card-info { flex: 1; min-width: 0; }
.tools-card-name { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.tools-card-desc { font-size: 12px; color: var(--text-3); line-height: 1.4; }
.tools-card-arrow { font-size: 12px; color: var(--accent); font-weight: 600; flex-shrink: 0; white-space: nowrap; }

/* Preview cards */
.preview-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r); overflow: hidden; cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), transform var(--dur-md) var(--ease-spring), box-shadow var(--dur-md) var(--ease);
}
.preview-card:hover {
  border-color: var(--border-2);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.preview-card-img-wrap { height: 130px; overflow: hidden; background: var(--bg-3); }
.preview-card-img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.preview-card:hover .preview-card-img { transform: scale(1.04); }
.preview-card-img-ph {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; color: var(--text-4);
}
.preview-card-body { padding: 12px; }
.preview-card-badges { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 8px; }
.preview-card-title { font-size: 14px; font-weight: 600; color: var(--text); line-height: 1.4; margin-bottom: 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.preview-card-meta { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-3); }
.preview-author-avatar { width: 18px; height: 18px; border-radius: 50%; object-fit: cover; }
.preview-price { color: var(--accent); font-weight: 600; margin-left: auto; }
.preview-date { color: var(--text-4); margin-left: auto; }

/* Help preview item */
.help-preview-item {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-sm); cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.help-preview-item:hover { border-color: var(--border-2); box-shadow: var(--shadow); transform: translateY(-1px); }
.help-preview-left { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.help-preview-body { flex: 1; min-width: 0; }
.help-preview-title { font-size: 14px; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.help-preview-meta { font-size: 12px; color: var(--text-3); margin-top: 2px; }

/* ══════════════════════════════
   PAGE BANNER
══════════════════════════════ */
.page-banner {
  padding: 48px 20px;
  text-align: center;
  position: relative; overflow: hidden;
  background: var(--bg-1);
  border-bottom: 1px solid var(--border);
}
.page-banner::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(0,0,0,.05) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.page-banner-posts::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(0,113,227,.09) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner-items::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(50,173,230,.08) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner-helps::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(255,149,0,.08) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner-rentals::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(52,199,89,.09) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner-carpools::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(50,173,230,.10) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner-guides::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(175,82,222,.09) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner-reviews::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(255,149,0,.09) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner-market::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(52,199,89,.09) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner-inner { position: relative; z-index: 1; }
.page-banner h1 { font-size: 28px; font-weight: 700; letter-spacing: -.03em; margin-bottom: 8px; }
.page-banner p  { font-size: 15px; color: var(--text-3); }

/* ══════════════════════════════
   FILTER BAR
══════════════════════════════ */
.filter-bar {
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: var(--nav-h); z-index: 100;
}
.filter-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  min-height: 52px;
}
.filter-tabs, .type-filter {
  display: flex; align-items: center; gap: 4px; flex-wrap: wrap;
}
.tab-btn, .type-btn {
  padding: 5px 12px; border-radius: 999px;
  border: 1px solid transparent;
  font-size: 13px; font-weight: 500; color: var(--text-3);
  background: none;
  transition: all var(--dur) var(--ease); cursor: pointer;
}
.tab-btn:hover, .type-btn:hover { color: var(--text); background: var(--bg-3); }
.tab-btn.active, .type-btn.active {
  background: var(--accent-dim);
  border-color: rgba(0,113,227,.18);
  color: var(--accent);
}
.type-filter { padding-left: 12px; border-left: 1px solid var(--border); }
.inline-search {
  margin-left: auto; display: flex; align-items: center;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: 999px; overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.inline-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.inline-search input {
  background: none; border: none; outline: none;
  padding: 7px 14px; font-size: 13px; color: var(--text); width: 180px;
}
.inline-search input::placeholder { color: var(--text-4); }
.inline-search button {
  background: none; border: none; padding: 7px 12px;
  color: var(--text-3); font-size: 15px;
  transition: color var(--dur) var(--ease);
}
.inline-search button:hover { color: var(--accent); }

/* Pill-style select for filter bars (faculty, category, etc.) */
.filter-select {
  appearance: none; -webkit-appearance: none;
  font-family: inherit; font-size: 13px; font-weight: 500;
  color: var(--text-3); background: none;
  border: 1px solid transparent; border-radius: 999px;
  padding: 5px 26px 5px 12px; cursor: pointer; outline: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236e6e73'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center; background-size: 9px 5px;
  transition: all var(--dur) var(--ease);
  max-width: 220px; text-overflow: ellipsis;
}
.filter-select:hover { color: var(--text); background-color: var(--bg-3); }
.filter-select:focus  { border-color: rgba(0,113,227,.18); background-color: var(--bg-3); }
.filter-select.has-value {
  background-color: var(--accent-dim); border-color: rgba(0,113,227,.18); color: var(--accent);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%230071e3'/%3E%3C/svg%3E");
}

/* Posts header */
.posts-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 20px;
}
.posts-count { font-size: 13px; color: var(--text-3); font-weight: 500; }
.search-tag {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-2);
  background: var(--bg-3); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 999px;
}
.clear-search {
  background: none; border: none; color: var(--text-3); font-size: 16px;
  cursor: pointer; line-height: 1; padding: 0 2px;
  transition: color var(--dur) var(--ease);
}
.clear-search:hover { color: var(--red); }

/* ══════════════════════════════
   CARDS GRID
══════════════════════════════ */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.post-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r); overflow: hidden; cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), transform var(--dur-md) var(--ease-spring), box-shadow var(--dur-md) var(--ease);
  display: flex; flex-direction: column;
  animation: cardIn .35s var(--ease-out) both;
}
@keyframes cardIn { from { opacity:0; transform:translateY(14px); } to { opacity:1; transform:translateY(0); } }
.post-card:hover {
  border-color: rgba(0,113,227,.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.post-card:nth-child(1)  { animation-delay: .04s; }
.post-card:nth-child(2)  { animation-delay: .08s; }
.post-card:nth-child(3)  { animation-delay: .12s; }
.post-card:nth-child(4)  { animation-delay: .16s; }
.post-card:nth-child(5)  { animation-delay: .20s; }
.post-card:nth-child(6)  { animation-delay: .24s; }
.post-card:nth-child(7)  { animation-delay: .28s; }
.post-card:nth-child(8)  { animation-delay: .32s; }
.post-card:nth-child(n+9){ animation-delay: .36s; }

/* Card image */
.card-img-wrap {
  position: relative; width: 100%; height: 180px;
  overflow: hidden; background: var(--bg-3); flex-shrink: 0;
}
.card-img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.post-card:hover .card-img { transform: scale(1.04); }
.card-img-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(29,29,31,.35) 0%, transparent 55%);
  pointer-events: none;
}
.card-img-badges {
  position: absolute; bottom: 10px; left: 10px;
  display: flex; gap: 5px; flex-wrap: wrap;
  pointer-events: none;
}
.badge-on-img { }
.card-img-placeholder {
  width: 100%; height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 8px;
}
.placeholder-icon { font-size: 32px; opacity: .35; }
.placeholder-label { font-size: 12px; color: var(--text-4); font-weight: 500; }

/* Card body */
.card-body { padding: 14px; flex: 1; display: flex; flex-direction: column; }
.card-type-row { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 8px; }
.card-title {
  font-size: 15px; font-weight: 600; color: var(--text);
  margin-bottom: 6px; line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card-desc {
  font-size: 13px; color: var(--text-3); line-height: 1.55;
  margin-bottom: 12px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card-footer {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; margin-top: auto;
}
.card-author-info { display: flex; align-items: center; gap: 7px; min-width: 0; }
.card-author-avatar { width: 22px; height: 22px; border-radius: 50%; object-fit: cover; flex-shrink: 0; border: 1px solid var(--border); }
.card-author-text { display: flex; flex-direction: column; min-width: 0; }
.card-author { font-size: 12px; font-weight: 500; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card-date { font-size: 11px; color: var(--text-4); }
.card-budget {
  font-size: 13px; font-weight: 700; color: var(--accent);
  flex-shrink: 0; white-space: nowrap;
}

/* ══════════════════════════════
   HELP LIST
══════════════════════════════ */
.helps-list { display: flex; flex-direction: column; gap: 8px; }
.help-card {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r); cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
  animation: cardIn .35s var(--ease-out) both;
}
.help-card:hover {
  border-color: var(--border-2);
  box-shadow: var(--shadow);
  transform: translateX(3px);
}
.help-card-left { flex-shrink: 0; }
.help-card-avatar { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border); }
.help-card-body { flex: 1; min-width: 0; }
.help-card-title { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 4px; line-height: 1.4; }
.help-card-desc { font-size: 13px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 6px; }
.help-card-meta { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-4); flex-wrap: wrap; }
.help-deadline { color: var(--amber); font-weight: 500; }
.help-card-arrow { color: var(--text-4); font-size: 18px; flex-shrink: 0; transition: transform var(--dur) var(--ease), color var(--dur) var(--ease); }
.help-card:hover .help-card-arrow { transform: translateX(4px); color: var(--accent); }

/* ══════════════════════════════
   BADGES
══════════════════════════════ */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 9px; border-radius: 999px;
  font-size: 11px; font-weight: 600; letter-spacing: .2px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.badge-buy    { background: var(--accent-dim); color: var(--accent); border-color: rgba(0,113,227,.18); }
.badge-sell   { background: var(--cyan-dim);   color: #1a8cc7;   border-color: rgba(50,173,230,.22); }
.badge-pin    { background: var(--amber-dim);  color: #c47800;  border-color: rgba(255,149,0,.22); }
.badge-type   { }
.badge-cat    { background: var(--bg-3); color: var(--text-2); border-color: var(--border); }
.badge-cat-light { background: var(--bg-3); color: var(--text-3); border-color: var(--border); }
.badge-cond   { background: var(--green-dim); color: #1a7a2e; border-color: rgba(40,205,65,.22); }
.badge-help    { background: var(--amber-dim); color: #c47800; border-color: rgba(255,149,0,.22); }
.badge-rent    { background: var(--green-dim); color: #1a7a2e; border-color: rgba(52,199,89,.22); }
.badge-carpool { background: var(--cyan-dim);  color: #1a6e9a; border-color: rgba(50,173,230,.22); }
.badge-review  { background: rgba(88,86,214,.08); color: #5856d6; border-color: rgba(88,86,214,.22); }

/* ══════════════════════════════
   SKELETON
══════════════════════════════ */
@keyframes shimmer {
  0% { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--bg-3) 25%, var(--bg-4) 50%, var(--bg-3) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--r-xs);
}
.skeleton-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r); overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.skeleton-img   { height: 180px; border-radius: 0; }
.skeleton-body  { padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.skeleton-line  { height: 14px; }
.w-full { width: 100%; }
.w-3-4  { width: 75%; }
.w-1-2  { width: 50%; }

/* ══════════════════════════════
   LOADING SPINNER
══════════════════════════════ */
.detail-loading {
  display: flex; flex-direction: column; align-items: center;
  gap: 16px; padding: 80px 20px; color: var(--text-3); font-size: 14px;
}
.spinner {
  width: 36px; height: 36px;
  border: 2px solid var(--border-2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.preview-loading { display: flex; justify-content: center; padding: 40px; }

/* ══════════════════════════════
   EMPTY STATE
══════════════════════════════ */
.posts-empty {
  text-align: center; padding: 80px 20px; color: var(--text-3);
}
.empty-illustration { font-size: 48px; margin-bottom: 16px; opacity: .5; }
.empty-icon { font-size: 40px; margin-bottom: 12px; }
.posts-empty h3 { font-size: 18px; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }
.posts-empty p  { font-size: 14px; margin-bottom: 24px; }

/* ══════════════════════════════
   PAGINATION
══════════════════════════════ */
.pagination {
  display: flex; align-items: center; justify-content: center;
  gap: 4px; margin-top: 40px; flex-wrap: wrap;
}
.pagination button {
  padding: 7px 13px; border-radius: var(--r-sm);
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text-2); font-size: 13px; font-weight: 500;
  transition: all var(--dur) var(--ease);
}
.pagination button:hover { border-color: var(--border-2); background: var(--bg-3); color: var(--text); }
.pagination button.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.pg-ellipsis { padding: 0 6px; color: var(--text-4); font-size: 14px; }

/* ══════════════════════════════
   DETAIL PAGE
══════════════════════════════ */
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-3);
  margin-bottom: 24px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-3); transition: color var(--dur) var(--ease); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--text-4); }

.post-detail-wrap { min-height: 300px; }
.detail-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}
.detail-img-wrap { height: 360px; overflow: hidden; background: var(--bg-3); }
.detail-img { width: 100%; height: 100%; object-fit: cover; }
.detail-body { padding: 32px; }
.detail-badges { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.detail-title {
  font-size: 26px; font-weight: 700; letter-spacing: -.03em;
  line-height: 1.3; margin-bottom: 20px; color: var(--text);
}
.detail-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.detail-meta-item {
  display: flex; align-items: center; gap: 6px;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 7px 12px;
  font-size: 13px;
}
.meta-label { color: var(--text-3); }
.meta-val { color: var(--text); font-weight: 600; }
.detail-section { margin-bottom: 28px; }
.detail-section h2 { font-size: 13px; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: .07em; margin-bottom: 12px; }
.detail-desc { font-size: 15px; color: var(--text-2); line-height: 1.75; }
.detail-actions { display: flex; gap: 10px; flex-wrap: wrap; padding-top: 16px; border-top: 1px solid var(--border); margin-top: 24px; }

/* Contact box */
.contact-box {
  display: flex; align-items: center; gap: 14px;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 16px 18px;
}
.contact-icon { font-size: 20px; flex-shrink: 0; }
.contact-label { font-size: 12px; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 2px; }
.contact-value { font-size: 16px; font-weight: 600; color: var(--text); }
.contact-locked {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: var(--bg-3); border: 1px solid var(--border); border-radius: var(--r-sm);
  padding: 24px; text-align: center;
  color: var(--text-3); font-size: 14px;
}
.contact-locked span { font-size: 24px; }

/* Author box */
.author-box {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 14px 16px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.author-box:hover { background: var(--bg-4); border-color: var(--border-2); }
.author-avatar { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; border: 1.5px solid var(--border-2); }
.author-name { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 2px; }
.author-sub  { font-size: 12px; color: var(--text-3); }

/* Error box */
.error-box {
  text-align: center; padding: 80px 20px; color: var(--text-3);
}
.error-box h2 { font-size: 20px; font-weight: 600; color: var(--text-2); margin-bottom: 20px; }

/* ══════════════════════════════
   FORMS
══════════════════════════════ */
.page-header { margin-bottom: 32px; }
.page-header h1 { font-size: 26px; font-weight: 700; letter-spacing: -.03em; margin-bottom: 6px; }
.page-header p  { font-size: 14px; color: var(--text-3); }

.form-section { margin-bottom: 24px; }
.section-label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--text-2); margin-bottom: 10px; letter-spacing: -.01em;
}
.required { color: var(--red); }

.form-group { margin-bottom: 20px; position: relative; }
.form-group label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--text-2); margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select,
.form-select {
  width: 100%;
  background: var(--bg); border: 1px solid var(--border-2);
  border-radius: var(--r-sm); color: var(--text);
  padding: 11px 14px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  outline: none; appearance: none;
}
/* Custom chevron for all form selects (appearance:none hides the native one) */
.form-group select,
.form-select {
  padding-right: 36px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M0 0l6 8 6-8z' fill='%236e6e73'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 10px 7px;
  cursor: pointer;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus,
.form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-4); }
.form-group textarea { resize: vertical; min-height: 120px; line-height: 1.6; }
select option  { background: var(--bg); color: var(--text); }
select optgroup { font-style: normal; font-weight: 700; background: var(--bg-3); color: var(--text-2); }
.form-group select:invalid { color: var(--text-4); }
.char-count {
  position: absolute; right: 14px; bottom: 12px;
  font-size: 11px; color: var(--text-4); pointer-events: none;
}
.form-hint { font-size: 12px; color: var(--text-4); margin-top: 5px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.price-input-wrap { display: flex; gap: 0; align-items: stretch; }
.price-input-wrap select {
  width: auto; flex-shrink: 0; min-width: 0;
  padding: 11px 28px 11px 12px;
  border-radius: var(--r-sm) 0 0 var(--r-sm);
  border-right: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236e6e73'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center;
  cursor: pointer;
}
.price-input-wrap input { flex: 1; width: auto; min-width: 0; border-radius: 0 var(--r-sm) var(--r-sm) 0; }

.form-actions {
  display: flex; gap: 10px; justify-content: flex-end;
  padding-top: 24px; border-top: 1px solid var(--border); margin-top: 8px;
}

/* ── Utility checkboxes (租房表单) ── */
.utils-checks { display: flex; flex-wrap: wrap; gap: 10px; }
.util-check { cursor: pointer; user-select: none; }
.util-check input[type="checkbox"] { display: none; }
.util-check-label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 20px;
  border: 1.5px solid var(--border);
  background: var(--bg-2); color: var(--text-2);
  font-size: 13px; font-weight: 500;
  transition: border-color .15s, background .15s, color .15s;
}
.util-check input:checked + .util-check-label {
  border-color: var(--primary);
  background: rgba(139,92,246,.12);
  color: var(--primary);
}
.util-check-label .util-icon { font-size: 16px; line-height: 1; }

/* 电费单价行 */
.elec-rate-row { display: flex; align-items: center; gap: 8px; margin-top: 12px; }
.elec-rate-row input { flex: 1; max-width: 160px; }
.elec-rate-unit { font-size: 13px; color: var(--text-3); white-space: nowrap; }

/* 详情页 utilities 展示 */
.utils-display { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.util-tag {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 12px; border-radius: 14px; font-size: 12px; font-weight: 600;
}
.util-tag.included  { background: var(--green-dim); color: #1a7a2e; border: 1px solid rgba(52,199,89,.22); }
.util-tag.excluded  { background: var(--bg-3); color: var(--text-3); border: 1px solid var(--border); }

/* Type selector (post create) */
.type-selector { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.type-opt { cursor: pointer; }
.type-opt input { display: none; }
.type-opt-card {
  padding: 20px; border-radius: var(--r); text-align: center;
  background: var(--bg); border: 1.5px solid var(--border);
  transition: all var(--dur) var(--ease);
}
.type-opt-card:hover { border-color: var(--border-2); background: var(--bg-3); }
.type-opt input:checked + .type-opt-card,
.type-opt-card.selected {
  border-color: var(--accent);
  background: var(--accent-dim);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.type-opt-icon  { font-size: 28px; margin-bottom: 8px; }
.type-opt-title { font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.type-opt-desc  { font-size: 12px; color: var(--text-3); }

/* Condition selector (item create) */
.cond-selector { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; }
.cond-opt { cursor: pointer; }
.cond-opt input { display: none; }
.cond-opt-card {
  padding: 14px 10px; border-radius: var(--r-sm); text-align: center;
  background: var(--bg); border: 1.5px solid var(--border);
  transition: all var(--dur) var(--ease);
}
.cond-opt-card:hover { border-color: var(--border-2); background: var(--bg-3); }
.cond-opt input:checked + .cond-opt-card,
.cond-opt-card.selected {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.cond-opt-icon  { font-size: 22px; margin-bottom: 6px; }
.cond-opt-title { font-size: 13px; font-weight: 600; color: var(--text); }

/* Image upload */
.upload-area {
  border: 1.5px dashed var(--border-2); border-radius: var(--r);
  padding: 40px 20px; text-align: center; cursor: pointer;
  background: var(--bg-3); position: relative;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
  overflow: hidden;
}
.upload-area:hover { border-color: var(--accent); background: var(--accent-dim); }
.upload-icon { font-size: 36px; margin-bottom: 10px; }
.upload-area p { font-size: 14px; color: var(--text-2); margin-bottom: 4px; }
.upload-hint { font-size: 12px; color: var(--text-4) !important; }
#image-preview { width: 100%; max-height: 260px; object-fit: contain; }

/* ══════════════════════════════
   AUTH PAGES
══════════════════════════════ */
.auth-wrap {
  min-height: calc(100vh - var(--nav-h));
  display: flex; align-items: center; justify-content: center;
  padding: 40px 20px;
  background: var(--bg-1);
  position: relative; overflow: hidden;
}
.auth-wrap::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(0,113,227,.08) 0%, transparent 60%);
  pointer-events: none;
}
.auth-card {
  position: relative; z-index: 1;
  background: var(--bg); border: 1px solid var(--border-2);
  border-radius: var(--r-xl); padding: 44px 40px;
  width: 100%; max-width: 420px;
  box-shadow: var(--shadow-lg);
}
.auth-header { text-align: center; margin-bottom: 32px; }
.auth-logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 700; margin-bottom: 24px;
  text-decoration: none; color: var(--text);
}
.auth-header h1 { font-size: 24px; font-weight: 700; letter-spacing: -.03em; margin-bottom: 8px; }
.auth-header p  { font-size: 14px; color: var(--text-3); }
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.auth-footer { margin-top: 24px; text-align: center; font-size: 14px; color: var(--text-3); }
.auth-footer a { color: var(--accent); }
.auth-footer a:hover { text-decoration: underline; }

.pw-wrap { position: relative; }
.pw-wrap input { padding-right: 44px; }
.pw-toggle {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--text-4); font-size: 16px;
  transition: color var(--dur) var(--ease);
}
.pw-toggle:hover { color: var(--text-2); }

/* ══════════════════════════════
   PROFILE
══════════════════════════════ */
.profile-header { margin-bottom: 32px; }
.profile-cover {
  height: 140px; border-radius: var(--r-lg) var(--r-lg) 0 0;
  background: linear-gradient(135deg, rgba(0,113,227,.12) 0%, rgba(50,173,230,.10) 50%, rgba(0,113,227,.06) 100%);
  position: relative;
}
.profile-cover::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(0,0,0,.05) 1px, transparent 1px);
  background-size: 24px 24px;
  border-radius: inherit;
}
.profile-header-body {
  display: flex; align-items: flex-end; gap: 20px;
  background: var(--bg); border: 1px solid var(--border);
  border-top: none; border-radius: 0 0 var(--r-lg) var(--r-lg);
  padding: 0 28px 24px; flex-wrap: wrap;
}
.profile-avatar {
  width: 80px; height: 80px; border-radius: 50%;
  border: 3px solid var(--bg);
  object-fit: cover;
  margin-top: -40px; flex-shrink: 0;
  box-shadow: var(--shadow);
}
.profile-info { flex: 1; padding-top: 16px; }
.profile-name { font-size: 22px; font-weight: 700; letter-spacing: -.03em; margin-bottom: 6px; }
.profile-email, .profile-joined {
  font-size: 13px; color: var(--text-3);
  display: flex; align-items: center; gap: 5px;
}

.profile-section { }
.profile-tabs {
  display: flex; gap: 4px; flex-wrap: wrap;
  border-bottom: 1px solid var(--border); padding-bottom: 4px;
  margin-bottom: 24px;
}
.profile-tab {
  padding: 8px 16px; border-radius: var(--r-sm) var(--r-sm) 0 0;
  border: none; background: none;
  font-size: 14px; font-weight: 500; color: var(--text-3);
  cursor: pointer; transition: all var(--dur) var(--ease);
  position: relative;
}
.profile-tab:hover { color: var(--text); }
.profile-tab.active { color: var(--accent); }
.profile-tab.active::after {
  content: ''; position: absolute; bottom: -5px; left: 0; right: 0;
  height: 2px; background: var(--accent); border-radius: 1px;
}
.tab-count {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: 999px; padding: 1px 7px; font-size: 11px;
  margin-left: 4px; font-weight: 600; color: var(--text-3);
}
.profile-tab-content { display: none; }
.profile-tab-content.active { display: block; }

/* ══════════════════════════════
   MODAL
══════════════════════════════ */
.modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.35); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  animation: fadeIn .2s var(--ease-out);
}
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
.modal-card {
  background: var(--bg); border: 1px solid var(--border-2);
  border-radius: var(--r-xl); padding: 36px;
  width: 100%; max-width: 460px;
  box-shadow: var(--shadow-lg);
  animation: slideUp .25s var(--ease-out);
}
@keyframes slideUp { from { opacity:0; transform: translateY(20px); } to { opacity:1; transform: translateY(0); } }
.modal-card h2 { font-size: 20px; font-weight: 700; letter-spacing: -.02em; margin-bottom: 24px; }

/* Avatar upload in modal */
.avatar-upload-wrap {
  width: 80px; height: 80px; border-radius: 50%;
  overflow: hidden; cursor: pointer; position: relative;
  border: 2px solid var(--border-2);
  margin-bottom: 12px;
}
.avatar-upload-preview { width: 100%; height: 100%; object-fit: cover; }
.avatar-upload-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,.45); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.avatar-upload-wrap:hover .avatar-upload-overlay { opacity: 1; }

/* ══════════════════════════════
   COMMENTS
══════════════════════════════ */
.comments-section { margin-top: 8px; }
.comments-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 28px;
  box-shadow: var(--shadow-sm);
}
.comments-title {
  font-size: 18px; font-weight: 700; letter-spacing: -.02em;
  margin-bottom: 20px; color: var(--text);
}
.comments-count {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: 999px; padding: 1px 8px; font-size: 12px;
  margin-left: 6px; font-weight: 600; color: var(--text-3); vertical-align: middle;
}
.comment-input-wrap {
  display: flex; gap: 12px; margin-bottom: 24px;
  padding-bottom: 24px; border-bottom: 1px solid var(--border);
}
.comment-avatar { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; flex-shrink: 0; border: 1px solid var(--border); }
.comment-input-inner { flex: 1; }
.comment-input-inner textarea {
  width: 100%; background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--r-sm); color: var(--text); padding: 10px 12px;
  resize: none; outline: none; font-size: 14px; line-height: 1.6;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.comment-input-inner textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.comment-input-inner textarea::placeholder { color: var(--text-4); }
.comment-input-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 8px;
}
.comment-char-count { font-size: 12px; color: var(--text-4); }
.comment-login-hint { margin-bottom: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.comments-list { display: flex; flex-direction: column; gap: 16px; }
.comment-item { display: flex; gap: 12px; }
.comment-body { flex: 1; }
.comment-meta {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 6px;
}
.comment-author { font-size: 13px; font-weight: 600; color: var(--text); }
.comment-time   { font-size: 12px; color: var(--text-4); }
.comment-delete {
  margin-left: auto; background: none; border: none;
  color: var(--text-4); font-size: 18px; line-height: 1; cursor: pointer;
  transition: color var(--dur) var(--ease);
}
.comment-delete:hover { color: var(--red); }
.comment-content { font-size: 14px; color: var(--text-2); line-height: 1.65; }
.comments-empty { color: var(--text-4); font-size: 14px; text-align: center; padding: 24px 0; }

/* ══════════════════════════════
   FAB
══════════════════════════════ */
.fab {
  position: fixed; bottom: 28px; right: 28px; z-index: 150;
  width: 54px; height: 54px; border-radius: 50%;
  background: var(--accent);
  color: #fff; font-size: 24px; font-weight: 300;
  border: none; box-shadow: 0 4px 20px rgba(0,113,227,.3), var(--shadow-md);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--dur-md) var(--ease-spring);
}
.fab:hover { transform: scale(1.1) rotate(90deg); box-shadow: 0 8px 28px rgba(0,113,227,.38); }

/* ══════════════════════════════
   FOOTER
══════════════════════════════ */
.footer {
  text-align: center; padding: 40px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg-1);
  color: var(--text-4); font-size: 13px;
}
.footer-logo { font-size: 22px; margin-bottom: 10px; }
.footer p { margin-bottom: 4px; color: var(--text-3); }
.footer-sub { font-size: 12px; color: var(--text-4); margin-top: 4px; }
.footer-links {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px;
  margin: 16px 0 10px;
}
.footer-link-card {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg); color: var(--text-2);
  font-size: 12px; font-weight: 500;
  text-decoration: none; transition: border-color .15s, color .15s, box-shadow .15s;
  white-space: nowrap;
}
.footer-link-card:hover {
  border-color: var(--accent); color: var(--accent);
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
}
.footer-link-card .flc-icon { font-size: 13px; flex-shrink: 0; }
.footer-link-card .flc-arrow { font-size: 10px; opacity: .45; }
.footer-meta { font-size: 12px; margin: 4px 0; }
.footer-meta a { color: var(--text-4); text-decoration: none; }
.footer-meta a:hover { color: var(--accent); }

/* ══════════════════════════════
   ADMIN
══════════════════════════════ */
.admin-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin-bottom: 32px;
}
.stat-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r); padding: 22px;
  box-shadow: var(--shadow-sm);
}
.stat-card-value { font-size: 32px; font-weight: 700; letter-spacing: -.04em; color: var(--text); }
.stat-card-label { font-size: 13px; color: var(--text-3); margin-top: 4px; }
.stat-card-accent { border-color: rgba(0,113,227,.15); background: var(--accent-dim); }
.stat-card-accent .stat-card-value { color: var(--accent); }

.admin-section { margin-bottom: 40px; }
.admin-section-title {
  font-size: 16px; font-weight: 700; color: var(--text);
  margin-bottom: 16px; padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}

.admin-table-wrap {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r); overflow: auto;
  box-shadow: var(--shadow-sm);
}
.admin-table {
  width: 100%; border-collapse: collapse; font-size: 13px;
}
.admin-table th {
  padding: 11px 14px; text-align: left;
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
  color: var(--text-3); border-bottom: 1px solid var(--border);
  background: var(--bg-1); white-space: nowrap;
}
.admin-table td {
  padding: 11px 14px; border-bottom: 1px solid var(--border);
  color: var(--text-2); vertical-align: middle;
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--bg-1); }
.admin-table a { color: var(--accent); }
.admin-status-active   { color: var(--green); font-weight: 600; }
.admin-status-deleted  { color: var(--text-4); text-decoration: line-through; }

.admin-filter {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-bottom: 16px; align-items: center;
}
.admin-filter input, .admin-filter select {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 7px 12px;
  color: var(--text); font-size: 13px; outline: none;
  transition: border-color var(--dur) var(--ease);
}
.admin-filter input:focus, .admin-filter select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
select option { background: var(--bg); color: var(--text); }

.admin-nav-tabs {
  display: flex; gap: 4px; flex-wrap: wrap;
  background: var(--bg-1); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 4px; margin-bottom: 24px;
}
.admin-nav-tab {
  padding: 7px 16px; border-radius: var(--r-xs);
  border: none; background: none;
  font-size: 13px; font-weight: 500; color: var(--text-3);
  cursor: pointer; transition: all var(--dur) var(--ease);
}
.admin-nav-tab:hover { background: var(--bg-4); color: var(--text); }
.admin-nav-tab.active { background: var(--bg); color: var(--text); box-shadow: var(--shadow-sm); }

.admin-pagination { display: flex; gap: 4px; margin-top: 16px; }
.admin-pagination button {
  padding: 5px 11px; border-radius: var(--r-xs);
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text-2); font-size: 12px; cursor: pointer;
  transition: all var(--dur) var(--ease);
}
.admin-pagination button:hover { border-color: var(--accent); color: var(--accent); }
.admin-pagination button.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.admin-pagination button:disabled { opacity: .4; cursor: not-allowed; }

/* ══════════════════════════════
   NOTIFICATION POPUP
══════════════════════════════ */
.notif-overlay {
  position: fixed; inset: 0; z-index: 2000;
  flex: none;           /* 不参与 body flex 布局 */
  background: rgba(0,0,0,.32);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  animation: fadeIn .2s var(--ease-out);
}
.notif-card {
  background: var(--bg);
  border: 1px solid var(--border-2);
  border-radius: var(--r-xl);
  padding: 32px 36px 28px;
  width: 100%; max-width: 440px;
  box-shadow: var(--shadow-lg);
  animation: slideUp .25s var(--ease-out);
}
.notif-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 18px;
}
.notif-icon {
  font-size: 24px; flex-shrink: 0;
  width: 44px; height: 44px;
  background: var(--accent-dim);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
}
.notif-title {
  font-size: 18px; font-weight: 700;
  letter-spacing: -.02em; color: var(--text);
}
.notif-body {
  font-size: 14px; color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 28px;
  max-height: 260px; overflow-y: auto;
  padding-right: 4px;
}
.notif-actions {
  display: flex; gap: 10px; justify-content: flex-end;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}
.notif-btn-mute {
  background: none; border: 1px solid var(--border-2);
  border-radius: var(--r-sm); padding: 8px 16px;
  font-size: 13px; font-weight: 500; color: var(--text-3);
  cursor: pointer; transition: all var(--dur) var(--ease);
}
.notif-btn-mute:hover { background: var(--bg-3); color: var(--text-2); border-color: var(--border-3); }
.notif-btn-close {
  background: var(--accent); border: none;
  border-radius: var(--r-sm); padding: 8px 20px;
  font-size: 13px; font-weight: 600; color: #fff;
  cursor: pointer; transition: all var(--dur) var(--ease);
}
.notif-btn-close:hover { background: var(--accent-hover); transform: translateY(-1px); }

/* ══════════════════════════════
   LANGUAGE PICKER
══════════════════════════════ */
.lang-pick-overlay {
  position: fixed; inset: 0; z-index: 3000;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  animation: fadeIn .2s var(--ease-out);
}
.lang-pick-card {
  background: var(--bg);
  border: 1px solid var(--border-2);
  border-radius: var(--r-xl);
  padding: 40px 36px 36px;
  width: 100%; max-width: 420px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  animation: slideUp .28s var(--ease-out);
}
.lang-pick-logo { font-size: 40px; margin-bottom: 12px; }
.lang-pick-title {
  font-size: 20px; font-weight: 700;
  color: var(--text); margin-bottom: 4px; letter-spacing: -.02em;
}
.lang-pick-sub {
  font-size: 13px; color: var(--text-3); margin-bottom: 28px;
}
.lang-pick-options {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.lang-pick-btn {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 20px 12px 18px;
  border: 1.5px solid var(--border-2);
  border-radius: var(--r-lg);
  background: var(--bg);
  cursor: pointer; transition: border-color .15s, box-shadow .15s, transform .15s;
}
.lang-pick-btn:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 18px rgba(0,113,227,.12);
  transform: translateY(-2px);
}
.lang-pick-btn .lpb-flag { font-size: 32px; }
.lang-pick-btn .lpb-name {
  font-size: 15px; font-weight: 700; color: var(--text);
}
.lang-pick-btn .lpb-sub {
  font-size: 11px; color: var(--text-3);
}

/* ══════════════════════════════
   MISC
══════════════════════════════ */
input[type="date"]::-webkit-calendar-picker-indicator { opacity: .5; cursor: pointer; }
input[type="number"] { -moz-appearance: textfield; }
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; }

/* ══════════════════════════════
   RESPONSIVE
══════════════════════════════ */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-nickname { display: none; }
  .nav-arrow { display: none; }

  .hero { padding: 44px 16px 56px; }
  .hero h1 { letter-spacing: -.03em; }
  .hero-groups { flex-wrap: wrap; }
  .hero-group { flex: 1 1 180px; }

  .posts-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
  .preview-grid { grid-template-columns: 1fr 1fr; }
  .cond-selector { grid-template-columns: repeat(2,1fr); }
  .form-row { grid-template-columns: 1fr; }

  .detail-body { padding: 20px; }
  .detail-img-wrap { height: 240px; }
  .detail-title { font-size: 21px; }

  .auth-card { padding: 32px 24px; }

  .profile-header-body { padding: 0 18px 20px; }
  .profile-name { font-size: 18px; }

  .type-selector { grid-template-columns: 1fr; }

  .comments-card { padding: 20px 16px; }

  .filter-inner { padding: 8px 16px; gap: 8px; }
  .inline-search input { width: 120px; }
  .type-filter { display: none; }

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

  .hero-stats-inner { gap: 0; }
  .stat-pill { padding: 8px 8px; }
  .stat-num { font-size: 18px; }
}

@media (max-width: 480px) {
  .preview-grid { grid-template-columns: 1fr; }
  .posts-grid { grid-template-columns: 1fr; }
  .admin-grid { grid-template-columns: 1fr; }
  .hero-group { flex: 1 1 140px; }
  .card-img-wrap { height: 150px; }
  .tools-card-grid { grid-template-columns: 1fr; }
}

/* ══════════════════════════════
   REVIEWS (教师评价)
══════════════════════════════ */
.form-tip-box {
  background: rgba(88,86,214,.06);
  border: 1px solid rgba(88,86,214,.18);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  font-size: 14px;
  color: #5856d6;
  margin-bottom: 24px;
  line-height: 1.6;
}

/* Star rating input (create form) */
.star-rating-input {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
}
.star-btn {
  background: none;
  border: none;
  font-size: 30px;
  color: var(--border-3);
  padding: 0 2px;
  line-height: 1;
  transition: color .12s var(--ease), transform .12s var(--ease-spring);
}
.star-btn:hover,
.star-btn.active { color: #ff9500; transform: scale(1.15); }
.star-label {
  margin-left: 10px;
  font-size: 13px;
  color: var(--text-3);
}

/* Stars display (listing & detail) */
.stars-wrap,
.stars-display { display: inline-flex; gap: 2px; }
.star-filled { color: #ff9500; }
.star-empty  { color: var(--border-3); }
.stars-num   { font-size: 13px; color: var(--text-3); margin-left: 4px; align-self: center; }

/* Reviews list card extras */
.review-meta-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 4px 0 6px;
  font-size: 15px;
}
.review-faculty-tag {
  font-size: 12px;
  color: #5856d6;
  background: rgba(88,86,214,.08);
  border: 1px solid rgba(88,86,214,.16);
  border-radius: 6px;
  padding: 2px 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 260px;
}
.review-course-tag {
  font-size: 14px;
  color: var(--text-3);
  font-weight: 400;
}

/* Preview card mini stars */
.review-stars-sm {
  font-size: 14px;
  color: #ff9500;
  margin: 4px 0;
  letter-spacing: 1px;
}

/* Detail page */
.review-detail-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.review-course-name {
  font-size: 15px;
  color: var(--text-3);
  margin-top: 4px;
}
.review-rating-block {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 28px;
  flex-shrink: 0;
}
.faculty-en {
  display: block;
  font-size: 12px;
  color: var(--text-4);
  margin-top: 2px;
}

/* Reviews list layout reuses .help-card */
.reviews-list { display: flex; flex-direction: column; gap: 12px; }

/* ══════════════════════════════
   TOOLS — PAGE BANNER
══════════════════════════════ */
.page-banner-tools::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 100%, rgba(0,113,227,.10) 0%, transparent 70%);
  pointer-events: none;
}

/* ══════════════════════════════
   TOOLS — CURRENCY CALCULATOR
══════════════════════════════ */
.fx-calc-page {
  max-width: 480px; margin: 56px auto 80px; padding: 0 20px;
}
.fx-calc-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 32px;
  box-shadow: var(--shadow-md);
}
.fx-calc-rate-display {
  text-align: center; padding: 4px 0 28px;
  border-bottom: 1px solid var(--border); margin-bottom: 28px;
}
.fx-calc-rate-line {
  font-size: 15px; color: var(--text-3); margin-bottom: 4px;
}
.fx-calc-rate-line strong { color: var(--accent); font-size: 20px; font-weight: 700; letter-spacing: -.02em; }
.fx-calc-rate-sub { font-size: 12px; color: var(--text-4); margin-top: 8px; }

.fx-calc-inputs { display: flex; flex-direction: column; gap: 10px; }
.fx-calc-row {
  background: var(--bg-1); border: 1.5px solid var(--border);
  border-radius: var(--r); padding: 14px 18px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.fx-calc-row:focus-within {
  border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim);
  background: var(--bg);
}
.fx-calc-label {
  font-size: 11px; font-weight: 700; letter-spacing: .06em;
  color: var(--text-4); text-transform: uppercase; margin-bottom: 8px;
}
.fx-calc-input-wrap { display: flex; align-items: baseline; gap: 6px; }
.fx-calc-symbol { font-size: 20px; font-weight: 700; color: var(--text-3); flex-shrink: 0; }
.fx-calc-input {
  flex: 1; border: none; background: transparent;
  font-size: 30px; font-weight: 700; color: var(--text);
  letter-spacing: -.03em; outline: none; width: 100%;
  -moz-appearance: textfield;
}
.fx-calc-input::placeholder { color: var(--border-3); }
.fx-calc-input::-webkit-inner-spin-button,
.fx-calc-input::-webkit-outer-spin-button { -webkit-appearance: none; }

.fx-calc-swap { display: flex; justify-content: center; margin: 2px 0; }
.fx-calc-swap-btn {
  background: var(--bg-3); border: 1px solid var(--border-2);
  border-radius: 50%; width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; cursor: pointer; color: var(--text-3);
  transition: background var(--dur) var(--ease-spring),
              border-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              transform var(--dur-md) var(--ease-spring);
}
.fx-calc-swap-btn:hover {
  background: var(--accent-dim); border-color: rgba(0,113,227,.25);
  color: var(--accent); transform: rotate(180deg);
}

.fx-calc-footer {
  margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.fx-calc-updated { font-size: 12px; color: var(--text-4); }
.fx-calc-refresh {
  background: none; border: 1px solid var(--border-2);
  border-radius: var(--r-sm); padding: 5px 12px;
  font-size: 12px; font-weight: 500; color: var(--text-3);
  cursor: pointer; display: flex; align-items: center; gap: 5px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.fx-calc-refresh:hover { background: var(--bg-3); color: var(--text); border-color: var(--border-3); }
.fx-calc-refresh:disabled { opacity: .45; cursor: not-allowed; }
.fx-refresh-icon { display: inline-block; transition: transform .6s var(--ease); }
.fx-calc-refresh.spinning .fx-refresh-icon { animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 480px) {
  .fx-calc-card { padding: 24px 18px; }
  .fx-calc-input { font-size: 26px; }
}