/* ==========================================================================
   2cExam Online — single stylesheet
   Premium bilingual (Traditional Chinese / English) HK finance-exam-prep site.
   Modern fintech-meets-education: calm, trustworthy, blue -> emerald accent.
   --------------------------------------------------------------------------
   TABLE OF CONTENTS
   01. Design tokens (:root)
   02. Reset & base elements
   03. Layout primitives (container, section, eyebrow, headings)
   04. Buttons
   05. Header / nav / mobile menu
   06. Footer
   07. Hero
   08. Trusted-by strip
   09. Features
   10. Papers / exams grid + page-hero
   11. Pricing
   12. Testimonials
   13. FAQ
   14. CTA band
   15. Quiz setup
   16. Dashboard
   17. Auth
   18. Quiz runtime (engine-built DOM)
   19. Motion / reveal / reduced-motion
   ========================================================================== */

/* ==========================================================================
   01. DESIGN TOKENS
   ========================================================================== */
:root {
  /* Palette */
  --ink: #0b1324;            /* primary navy text */
  --ink-2: #1e293b;          /* secondary text */
  --muted: #5b6577;          /* muted grey text (AA on white) */
  --muted-2: #6b7689;        /* fainter, still ≥4.5:1 on white */
  --line: #e6eaf1;           /* hairline borders */
  --line-2: #eef1f6;

  --paper: #ffffff;          /* card / surface white */
  --bg: #f7f9fc;             /* page background */
  --bg-tint: #f0f4fb;        /* tinted section */

  --blue: #2563eb;
  --blue-bright: #3b82f6;
  --blue-deep: #1d4ed8;
  --emerald: #10b981;
  --emerald-deep: #059669;

  --warm: #f59e0b;           /* warm accent / amber */
  --gold: #fbbf24;           /* stars */
  --success: #16a34a;
  --danger: #e11d48;
  --danger-soft: #fb7185;

  /* Signature gradient */
  --grad: linear-gradient(120deg, #2563eb 0%, #3b82f6 42%, #10b981 100%);
  --grad-soft: linear-gradient(120deg, #2563eb 0%, #10b981 100%);
  --grad-deep: linear-gradient(135deg, #0b1f4d 0%, #143a8a 45%, #0c6b54 100%);

  /* Radii */
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;

  /* Layered soft shadows */
  --sh-xs: 0 1px 2px rgba(11, 19, 36, .05);
  --sh-sm: 0 2px 6px rgba(11, 19, 36, .06), 0 1px 2px rgba(11, 19, 36, .04);
  --sh-md: 0 8px 24px rgba(15, 30, 70, .08), 0 2px 6px rgba(15, 30, 70, .05);
  --sh-lg: 0 18px 48px rgba(15, 30, 70, .12), 0 6px 16px rgba(15, 30, 70, .07);
  --sh-xl: 0 32px 80px rgba(15, 30, 70, .18), 0 10px 28px rgba(15, 30, 70, .09);
  --sh-ring: 0 0 0 4px rgba(37, 99, 235, .18);

  /* Spacing scale */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;

  /* Layout */
  --container: 1160px;
  --container-narrow: 760px;
  --header-h: 72px;

  --font: 'Manrope', 'Noto Sans HK', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'SFMono-Regular', ui-monospace, 'JetBrains Mono', Menlo, Consolas, monospace;

  --ease: cubic-bezier(.16, .84, .44, 1);
}

/* ==========================================================================
   02. RESET & BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--blue); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--blue-deep); }

button { font: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--ink);
  text-wrap: balance;
}

ul { list-style: none; padding: 0; }

[hidden] { display: none !important; }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(37, 99, 235, .16); }

/* Helper text utilities used in markup */
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.center { text-align: center; }

/* ==========================================================================
   03. LAYOUT PRIMITIVES
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}
.container.narrow { max-width: var(--container-narrow); }

main { display: block; }

.section { padding-block: clamp(56px, 9vw, 104px); }

.section-tint {
  background: var(--bg-tint);
  background-image:
    radial-gradient(60% 80% at 85% -10%, rgba(16, 185, 129, .07), transparent 60%),
    radial-gradient(50% 70% at 0% 110%, rgba(37, 99, 235, .07), transparent 60%);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto clamp(36px, 5vw, 56px);
}
.section-head h2 { font-size: clamp(1.9rem, 4vw, 2.6rem); margin-top: 10px; }
.section-sub { color: var(--muted); font-size: 1.05rem; margin-top: 14px; }

.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue);
  background: linear-gradient(90deg, var(--blue), var(--emerald));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* Generic elevated card surface */
.card-elevated {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-md);
}

/* ==========================================================================
   04. BUTTONS
   ========================================================================== */
.btn {
  --btn-pad-y: 11px;
  --btn-pad-x: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-weight: 700;
  font-size: .95rem;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .2s var(--ease), box-shadow .25s var(--ease),
              background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
  user-select: none;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  color: #fff;
  background-image: var(--grad);
  background-size: 140% 140%;
  background-position: 0% 50%;
  box-shadow: 0 8px 20px rgba(37, 99, 235, .28), inset 0 1px 0 rgba(255, 255, 255, .18);
}
.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  background-position: 100% 50%;
  box-shadow: 0 14px 30px rgba(37, 99, 235, .36), inset 0 1px 0 rgba(255, 255, 255, .22);
}

.btn-ghost {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--line);
  box-shadow: var(--sh-xs);
}
.btn-ghost:hover {
  color: var(--blue-deep);
  border-color: rgba(37, 99, 235, .4);
  background: #fbfdff;
  transform: translateY(-1px);
  box-shadow: var(--sh-sm);
}

.btn-light {
  color: var(--blue-deep);
  background: #fff;
  box-shadow: 0 10px 24px rgba(0, 0, 0, .18);
}
.btn-light:hover { color: var(--blue-deep); transform: translateY(-2px); box-shadow: 0 16px 34px rgba(0, 0, 0, .24); }

.btn-lg { --btn-pad-y: 15px; --btn-pad-x: 28px; font-size: 1.02rem; }
.btn-block { display: flex; width: 100%; }

/* ==========================================================================
   05. HEADER / NAV
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .72);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s var(--ease), border-color .3s var(--ease), background-color .3s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(15, 30, 70, .07);
  background: rgba(255, 255, 255, .85);
}

.nav {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  flex-shrink: 0;
}
.brand:hover { color: var(--ink); }

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background-image: var(--grad);
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -.04em;
  box-shadow: 0 6px 16px rgba(37, 99, 235, .35), inset 0 1px 0 rgba(255, 255, 255, .3);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
  font-size: 1.06rem;
}
.brand-text em {
  font-style: normal;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--muted);
}

/* On desktop the menu wrapper is transparent: its children (links + CTAs)
   participate directly in the .nav flexbox. On mobile it becomes the dropdown. */
.nav-menu {
  display: contents;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.nav-links a {
  color: var(--ink-2);
  font-weight: 600;
  font-size: .94rem;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}
.nav-links a:hover { color: var(--blue-deep); background: rgba(37, 99, 235, .07); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-toggle {
  display: inline-grid;
  place-items: center;
  min-width: 38px;
  height: 38px;
  padding-inline: 8px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  font-weight: 700;
  font-size: .85rem;
  color: var(--ink-2);
  background: var(--paper);
}
.lang-toggle:hover { color: var(--blue-deep); border-color: rgba(37, 99, 235, .4); }

/* Hamburger */
.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  margin-left: auto;
  padding: 10px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--sh-xs);
}
.nav-burger span {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: var(--ink);
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
body.nav-open .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-burger span:nth-child(2) { opacity: 0; }
body.nav-open .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   06. FOOTER
   ========================================================================== */
.site-footer {
  background: var(--grad-deep);
  color: #cdd8ee;
  padding-block: clamp(48px, 7vw, 80px) 28px;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 100% at 80% 0%, rgba(16, 185, 129, .18), transparent 60%);
  pointer-events: none;
}
.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.brand-footer { color: #fff; }
.brand-footer:hover { color: #fff; }
.brand-footer .brand-text { color: #fff; }
.footer-tag { margin-top: 14px; max-width: 32ch; color: #aab8d6; font-size: .95rem; }

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.footer-cols h4 {
  color: #fff;
  font-size: .82rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.footer-cols a {
  display: block;
  color: #aab8d6;
  font-size: .94rem;
  padding: 5px 0;
}
.footer-cols a:hover { color: #fff; }

.footer-bottom {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: .82rem;
  color: #8294b8;
}

/* ==========================================================================
   07. HERO
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(48px, 8vw, 96px) clamp(56px, 9vw, 104px);
}
.hero-bg {
  position: absolute;
  inset: -10% -10% auto -10%;
  height: 130%;
  z-index: 0;
  background:
    radial-gradient(42% 50% at 18% 14%, rgba(37, 99, 235, .20), transparent 62%),
    radial-gradient(40% 46% at 88% 8%, rgba(16, 185, 129, .18), transparent 60%),
    radial-gradient(50% 60% at 65% 100%, rgba(59, 130, 246, .14), transparent 62%);
  filter: blur(12px);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(28% 30% at 30% 30%, rgba(16, 185, 129, .16), transparent 70%);
  animation: blob-float 18s ease-in-out infinite alternate;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: clamp(32px, 5vw, 64px);
}

.hero-copy { max-width: 620px; }
.hero-copy .eyebrow { margin-bottom: 18px; }

.hero-title {
  font-size: clamp(2.2rem, 5.2vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -.03em;
}
.hero-lead {
  margin-top: 22px;
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  color: var(--muted);
  max-width: 46ch;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.hero-stats {
  display: flex;
  gap: clamp(20px, 4vw, 44px);
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--ink);
}
.hero-stats span { font-size: .8rem; color: var(--muted); letter-spacing: .01em; }

/* Visual side */
.hero-visual {
  position: relative;
  perspective: 1200px;
  transform-style: preserve-3d;
}
.hero-img {
  width: 100%;
  max-width: 640px;
  margin-inline: auto;
  height: auto;
  filter: drop-shadow(0 30px 60px rgba(15, 30, 70, .16));
}

.hero-qcard {
  position: absolute;
  bottom: 6%;
  left: -4%;
  width: min(300px, 78%);
  padding: 18px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .78);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
  border: 1px solid rgba(255, 255, 255, .7);
  box-shadow: var(--sh-xl);
  transform-style: preserve-3d;
  transition: transform .25s var(--ease);
  will-change: transform;
}
.qcard-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.qcard-tag {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: #fff;
  background-image: var(--grad);
  padding: 4px 10px;
  border-radius: var(--r-pill);
}
.qcard-hot { font-size: .76rem; font-weight: 600; color: var(--warm); }
.qcard-q { font-size: .92rem; font-weight: 600; line-height: 1.5; color: var(--ink); }
.qcard-opts { display: flex; flex-direction: column; gap: 7px; margin-top: 14px; }
.qopt {
  font-size: .82rem;
  font-weight: 600;
  color: var(--ink-2);
  padding: 8px 12px;
  border-radius: var(--r-sm);
  background: rgba(15, 30, 70, .04);
  border: 1px solid var(--line);
}
.qopt.is-correct {
  color: var(--emerald-deep);
  background: rgba(16, 185, 129, .12);
  border-color: rgba(16, 185, 129, .4);
}

/* ==========================================================================
   08. TRUSTED-BY
   ========================================================================== */
.trusted { padding-block: clamp(28px, 4vw, 44px); border-bottom: 1px solid var(--line); }
.trusted-label {
  text-align: center;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 18px;
}
.trusted-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 14px;
}
.trusted-item {
  font-weight: 700;
  font-size: .9rem;
  color: var(--muted);
  padding: 8px 16px;
  border-radius: var(--r-pill);
  background: var(--paper);
  border: 1px solid var(--line);
}

/* ==========================================================================
   09. FEATURES
   ========================================================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feature-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-lg);
  border-color: rgba(37, 99, 235, .25);
}
.feature-card h3 { font-size: 1.22rem; margin-bottom: 8px; }
.feature-card p { color: var(--muted); font-size: .98rem; }

.feature-lg {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr;
  background:
    radial-gradient(70% 120% at 100% 0%, rgba(16, 185, 129, .08), transparent 60%),
    var(--paper);
}

.feature-icon {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  font-size: 1.5rem;
  border-radius: 14px;
  margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(37, 99, 235, .12), rgba(16, 185, 129, .12));
  border: 1px solid rgba(37, 99, 235, .14);
}

.feature-img {
  margin-top: 22px;
  width: 100%;
  border-radius: var(--r-md);
  border: 1px solid var(--line-2);
}
.feature-lg .feature-img { max-height: 280px; object-fit: cover; }

/* ==========================================================================
   10. PAPERS / EXAMS GRID + PAGE-HERO
   ========================================================================== */
.page-hero {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding-block: clamp(56px, 9vw, 104px) clamp(36px, 5vw, 56px);
  background:
    radial-gradient(50% 80% at 50% -10%, rgba(37, 99, 235, .12), transparent 60%),
    radial-gradient(40% 60% at 85% 0%, rgba(16, 185, 129, .10), transparent 60%),
    var(--bg);
}
.page-title { font-size: clamp(2rem, 4.4vw, 3rem); margin-top: 12px; }
.page-lead { max-width: 56ch; margin: 16px auto 0; color: var(--muted); font-size: 1.08rem; }

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 26px;
}
.pill {
  font-size: .85rem;
  font-weight: 600;
  color: var(--ink-2);
  padding: 7px 16px;
  border-radius: var(--r-pill);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-xs);
}

.paper-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 22px;
}
.paper-card {
  display: flex;
  flex-direction: column;
  padding: 26px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  color: var(--ink);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.paper-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sh-lg);
  border-color: rgba(37, 99, 235, .28);
  color: var(--ink);
}
.paper-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.paper-no {
  display: inline-grid;
  place-items: center;
  min-width: 48px;
  height: 36px;
  padding-inline: 10px;
  font-weight: 800;
  font-size: .95rem;
  color: #fff;
  border-radius: var(--r-sm);
  background-image: var(--grad);
  box-shadow: 0 6px 14px rgba(37, 99, 235, .26);
}
.paper-count { font-size: .82rem; font-weight: 600; color: var(--muted); }
.paper-card h3 { font-size: 1.18rem; margin-bottom: 8px; }
.paper-card p { color: var(--muted); font-size: .95rem; flex-grow: 1; }

.paper-go {
  display: inline-block;
  margin-top: 16px;
  font-weight: 700;
  font-size: .9rem;
  color: var(--blue);
  transition: transform .2s var(--ease);
}
.paper-card:hover .paper-go { transform: translateX(4px); }

.paper-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 6px;
}
.topic-chip {
  font-size: .72rem;
  font-weight: 600;
  color: var(--ink-2);
  padding: 4px 10px;
  border-radius: var(--r-pill);
  background: rgba(37, 99, 235, .07);
  border: 1px solid rgba(37, 99, 235, .12);
}
.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.paper-actions .btn { flex: 1; min-width: 120px; }

/* ==========================================================================
   11. PRICING
   ========================================================================== */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: stretch;
}
.price-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
  border-radius: var(--r-xl);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); }
.price-card h3 { font-size: 1.3rem; }

.price-card.is-pop {
  border-color: transparent;
  background:
    linear-gradient(var(--paper), var(--paper)) padding-box,
    var(--grad) border-box;
  border: 2px solid transparent;
  box-shadow: var(--sh-xl);
  transform: scale(1.035);
}
.price-card.is-pop:hover { transform: scale(1.035) translateY(-4px); }

.price-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: #fff;
  padding: 6px 16px;
  border-radius: var(--r-pill);
  background-image: var(--grad);
  box-shadow: 0 8px 18px rgba(37, 99, 235, .3);
}

.price-amt {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 18px;
}
.price-amt .was {
  font-size: 1.05rem;
  color: var(--muted-2);
  text-decoration: line-through;
}
.price-amt .now {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--ink);
}
.price-period { font-size: .9rem; margin-top: 4px; }

.price-feats {
  display: flex;
  flex-direction: column;
  gap: 11px;
  margin: 22px 0;
  flex-grow: 1;
}
.price-feats li {
  position: relative;
  padding-left: 28px;
  font-size: .95rem;
  color: var(--ink-2);
}
.price-feats li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(16, 185, 129, .14);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23059669' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
}

/* ==========================================================================
   12. TESTIMONIALS
   ========================================================================== */
.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.testi-card {
  display: flex;
  flex-direction: column;
  padding: 28px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.testi-card:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); }
.testi-stars { color: var(--gold); letter-spacing: 2px; font-size: 1rem; margin-bottom: 14px; }
.testi-card blockquote {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink-2);
  flex-grow: 1;
}
.testi-card figcaption {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
  font-weight: 700;
  font-size: .95rem;
  color: var(--ink);
}
.testi-av {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-weight: 800;
  color: #fff;
  background-image: var(--grad);
  box-shadow: 0 6px 14px rgba(37, 99, 235, .3);
  flex-shrink: 0;
}

/* ==========================================================================
   13. FAQ
   ========================================================================== */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--paper);
  box-shadow: var(--sh-xs);
  overflow: hidden;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.faq-item[open] { border-color: rgba(37, 99, 235, .3); box-shadow: var(--sh-sm); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--blue);
  border-radius: 50%;
  background: rgba(37, 99, 235, .08);
  transition: transform .25s var(--ease), background-color .2s var(--ease);
}
.faq-item[open] summary::after { content: '–'; transform: rotate(180deg); background: rgba(16, 185, 129, .12); color: var(--emerald-deep); }
.faq-item p {
  padding: 0 22px 20px;
  color: var(--muted);
  font-size: .98rem;
  line-height: 1.7;
}

/* ==========================================================================
   14. CTA BAND
   ========================================================================== */
.cta-band {
  position: relative;
  overflow: hidden;
  padding-block: clamp(56px, 8vw, 88px);
  background: var(--grad-deep);
  text-align: center;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(40% 90% at 15% 0%, rgba(16, 185, 129, .28), transparent 60%),
    radial-gradient(40% 90% at 85% 100%, rgba(59, 130, 246, .3), transparent 60%);
  pointer-events: none;
}
.cta-band .container { position: relative; }
.cta-band h2 {
  color: #fff;
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  margin-bottom: 28px;
  max-width: 18ch;
  margin-inline: auto;
}

/* ==========================================================================
   15. QUIZ SETUP
   ========================================================================== */
.quiz-stage { padding-block: clamp(40px, 7vw, 80px); }

.quiz-setup {
  max-width: 720px;
  margin-inline: auto;
  padding: clamp(26px, 4vw, 40px);
}
.quiz-setup-head { text-align: center; margin-bottom: 28px; }
.quiz-setup-head h1 { font-size: clamp(1.6rem, 3.2vw, 2.1rem); margin-top: 8px; }

.setup-grid { display: flex; flex-direction: column; gap: 22px; }

.field { display: flex; flex-direction: column; gap: 8px; }
.field > label,
.field > span { font-weight: 700; font-size: .9rem; color: var(--ink-2); }
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.input,
select.input,
input.input {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: .98rem;
  color: var(--ink);
  background: #fbfcfe;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background-color .2s var(--ease);
  appearance: none;
}
.input:focus,
select.input:focus {
  outline: none;
  background: #fff;
  border-color: var(--blue-bright);
  box-shadow: var(--sh-ring);
}
select.input {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 18px;
  padding-right: 40px;
}

/* Mode cards (selectable) */
.mode-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.mode-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  text-align: left;
  padding: 18px;
  border-radius: var(--r-md);
  background: var(--paper);
  border: 1.5px solid var(--line);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.mode-card:hover { border-color: rgba(37, 99, 235, .35); transform: translateY(-2px); }
.mode-card strong { font-size: 1.02rem; color: var(--ink); }
.mode-card small { color: var(--muted); font-size: .84rem; line-height: 1.4; }
.mode-emoji { font-size: 1.5rem; margin-bottom: 4px; }
.mode-card.is-active {
  border-color: transparent;
  background:
    linear-gradient(var(--paper), var(--paper)) padding-box,
    var(--grad) border-box;
  border: 2px solid transparent;
  box-shadow: var(--sh-md), 0 0 0 4px rgba(37, 99, 235, .1);
}

/* Segmented control for papers */
.seg {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 5px;
  border-radius: var(--r-md);
  background: #eef2f8;
  border: 1px solid var(--line);
}
.seg-btn {
  flex: 1;
  min-width: 64px;
  padding: 9px 12px;
  font-weight: 700;
  font-size: .88rem;
  color: var(--muted);
  background: transparent;
  border: none;
  border-radius: var(--r-sm);
  transition: background-color .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease);
}
.seg-btn:hover { color: var(--ink); }
.seg-btn.is-active {
  color: var(--blue-deep);
  background: #fff;
  box-shadow: var(--sh-sm);
}

/* Checkbox row */
.check {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: .95rem;
  color: var(--ink-2);
  cursor: pointer;
}
.check input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--blue);
  cursor: pointer;
}

/* ==========================================================================
   16. DASHBOARD
   ========================================================================== */
.dash-stage { padding-block: clamp(40px, 6vw, 72px); }
.dash-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 36px;
}
.dash-head h1 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-top: 6px; word-break: break-word; }

.stat-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 52px;
}
.stat-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 26px 24px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
}
.stat-num { font-size: clamp(1.8rem, 3vw, 2.3rem); font-weight: 800; letter-spacing: -.03em; color: var(--ink); line-height: 1; }
.stat-label { font-size: .85rem; font-weight: 600; color: var(--muted); }
.stat-card.accent {
  color: #fff;
  background-image: var(--grad);
  border-color: transparent;
  box-shadow: var(--sh-md), 0 12px 28px rgba(37, 99, 235, .28);
}
.stat-card.accent .stat-num { color: #fff; }
.stat-card.accent .stat-label { color: rgba(255, 255, 255, .85); }

.dash-h2 { font-size: 1.4rem; margin: 48px 0 20px; }
.dash-stage .stat-cards + .dash-h2 { margin-top: 8px; }

.empty-state {
  padding: 48px 28px;
  text-align: center;
}
.empty-state p { color: var(--muted); margin-bottom: 18px; }

.table-wrap { overflow-x: auto; padding: 6px; }
.dash-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .94rem;
  min-width: 560px;
}
.dash-table th {
  text-align: left;
  padding: 14px 16px;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}
.dash-table td {
  padding: 14px 16px;
  color: var(--ink-2);
  border-bottom: 1px solid var(--line-2);
}
.dash-table tbody tr:nth-child(even) { background: #fafbfd; }
.dash-table tbody tr:hover { background: rgba(37, 99, 235, .04); }
.dash-table tbody tr:last-child td { border-bottom: none; }

.score-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-weight: 800;
  font-size: .82rem;
}
.score-badge.pass { color: var(--emerald-deep); background: rgba(16, 185, 129, .14); }
.score-badge.fail { color: var(--danger); background: rgba(225, 29, 72, .12); }

/* ==========================================================================
   17. AUTH
   ========================================================================== */
.auth-stage {
  display: grid;
  place-items: center;
  min-height: calc(100vh - var(--header-h));
  padding: clamp(32px, 6vw, 72px) 20px;
  background:
    radial-gradient(50% 60% at 20% 10%, rgba(37, 99, 235, .10), transparent 60%),
    radial-gradient(40% 50% at 90% 90%, rgba(16, 185, 129, .10), transparent 60%),
    var(--bg);
}
.auth-card {
  width: 100%;
  max-width: 440px;
  padding: clamp(28px, 4vw, 42px);
  text-align: center;
}
.auth-brand { justify-content: center; margin-bottom: 22px; }
.auth-card h1 { font-size: 1.7rem; }
.auth-card > .muted { margin-top: 8px; margin-bottom: 24px; }

.auth-form { display: flex; flex-direction: column; gap: 16px; text-align: left; }
.auth-form .field { gap: 6px; }
.auth-form .btn { margin-top: 6px; }

.auth-switch { margin-top: 22px; font-size: .92rem; }
.auth-switch a { font-weight: 700; }

.alert-error {
  padding: 12px 16px;
  margin-bottom: 18px;
  border-radius: var(--r-md);
  background: rgba(225, 29, 72, .08);
  border: 1px solid rgba(225, 29, 72, .25);
  color: var(--danger);
  font-size: .92rem;
  font-weight: 600;
  text-align: left;
}

/* ==========================================================================
   18. QUIZ RUNTIME (engine-built DOM)
   ========================================================================== */
.quiz-runtime { max-width: 820px; margin-inline: auto; }

/* --- Top bar --- */
.quiz-bar {
  position: sticky;
  top: calc(var(--header-h) + 8px);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 12px 16px;
  margin-bottom: 22px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  box-shadow: var(--sh-md);
}
.quiz-progress {
  flex: 1;
  min-width: 120px;
  height: 8px;
  border-radius: var(--r-pill);
  background: #e6eaf1;
  overflow: hidden;
}
.quiz-progress-fill {
  height: 100%;
  width: 0;
  border-radius: var(--r-pill);
  background-image: var(--grad);
  transition: width .4s var(--ease);
}
.quiz-timer {
  font-family: var(--mono);
  font-weight: 700;
  font-size: .95rem;
  color: var(--ink);
  padding: 5px 12px;
  border-radius: var(--r-sm);
  background: #eef2f8;
  font-variant-numeric: tabular-nums;
}
.quiz-timer.is-warning {
  color: var(--danger);
  background: rgba(225, 29, 72, .1);
  animation: pulse-warn 1.4s ease-in-out infinite;
}
.quiz-count-ind { font-size: .9rem; font-weight: 700; color: var(--muted); white-space: nowrap; }

/* --- Question card --- */
.q-card {
  padding: clamp(22px, 3vw, 32px);
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-md);
  margin-bottom: 22px;
}
.q-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.q-meta { font-size: .8rem; font-weight: 600; color: var(--muted-2); letter-spacing: .02em; }
.q-flag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .84rem;
  font-weight: 700;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: var(--r-pill);
  background: transparent;
  border: 1px solid var(--line);
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}
.q-flag:hover { color: var(--warm); border-color: rgba(245, 158, 11, .4); }
.q-flag.is-flagged {
  color: var(--warm);
  background: rgba(245, 158, 11, .12);
  border-color: rgba(245, 158, 11, .45);
}

.q-stem {
  font-size: clamp(1.08rem, 2vw, 1.25rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  white-space: pre-line;
  margin-bottom: 22px;
}

.q-options { display: flex; flex-direction: column; gap: 12px; }
.q-option {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 15px 18px;
  border-radius: var(--r-md);
  background: var(--paper);
  border: 1.5px solid var(--line);
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.5;
  transition: transform .15s var(--ease), border-color .2s var(--ease),
              background-color .2s var(--ease), box-shadow .2s var(--ease);
}
.q-option:hover { border-color: rgba(37, 99, 235, .4); background: #fbfdff; transform: translateY(-1px); }
.q-option-key {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-weight: 800;
  font-size: .9rem;
  color: var(--ink-2);
  background: #eef2f8;
  border: 1px solid var(--line);
  transition: inherit;
}
.q-option-text { padding-top: 3px; }

.q-option.is-selected {
  border-color: var(--blue);
  background: rgba(37, 99, 235, .07);
  box-shadow: var(--sh-ring);
}
.q-option.is-selected .q-option-key { color: #fff; background-image: var(--grad); border-color: transparent; }

.q-option.is-correct {
  border-color: var(--emerald);
  background: rgba(16, 185, 129, .1);
}
.q-option.is-correct .q-option-key { color: #fff; background: var(--emerald-deep); border-color: transparent; }

.q-option.is-wrong {
  border-color: var(--danger-soft);
  background: rgba(225, 29, 72, .08);
}
.q-option.is-wrong .q-option-key { color: #fff; background: var(--danger); border-color: transparent; }

.q-option.is-disabled { pointer-events: none; cursor: default; }
.q-option.is-disabled:hover { transform: none; }

/* Feedback */
.q-feedback {
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: #f7f9fc;
}
.q-feedback.is-correct { border-color: rgba(16, 185, 129, .35); background: rgba(16, 185, 129, .07); }
.q-feedback.is-wrong { border-color: rgba(225, 29, 72, .3); background: rgba(225, 29, 72, .06); }
.q-feedback-result { font-weight: 800; font-size: 1rem; margin-bottom: 8px; }
.q-feedback.is-correct .q-feedback-result { color: var(--emerald-deep); }
.q-feedback.is-wrong .q-feedback-result { color: var(--danger); }
.q-explanation { color: var(--ink-2); font-size: .96rem; line-height: 1.7; white-space: pre-line; }

/* Prev/next nav */
.q-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 26px;
}
.q-nav .btn { min-width: 120px; }

/* Navigator grid */
.q-navigator {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
  gap: 8px;
  padding: 18px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  margin-bottom: 26px;
}
.q-nav-cell {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: .85rem;
  color: var(--muted);
  border-radius: var(--r-sm);
  background: #eef2f8;
  border: 1px solid var(--line);
  transition: transform .15s var(--ease), box-shadow .2s var(--ease);
}
.q-nav-cell:hover { transform: translateY(-2px); }
.q-nav-cell.answered { color: #fff; background: var(--blue); border-color: transparent; }
.q-nav-cell.flagged { color: #fff; background: var(--warm); border-color: transparent; }
.q-nav-cell.correct { color: #fff; background: var(--emerald-deep); border-color: transparent; }
.q-nav-cell.wrong { color: #fff; background: var(--danger); border-color: transparent; }
.q-nav-cell.current { box-shadow: 0 0 0 3px var(--paper), 0 0 0 5px var(--blue); }

/* --- Results --- */
.quiz-results {
  text-align: center;
  padding: clamp(26px, 4vw, 44px);
  border-radius: var(--r-xl);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-lg);
}
.result-ring {
  --pct: 0;
  --ring-color: var(--blue);
  position: relative;
  display: grid;
  place-items: center;
  width: 180px;
  height: 180px;
  margin: 8px auto 24px;
  border-radius: 50%;
  background:
    conic-gradient(var(--ring-color) calc(var(--pct) * 1%), #e6eaf1 0);
}
.result-ring::before {
  content: '';
  position: absolute;
  inset: 16px;
  border-radius: 50%;
  background: var(--paper);
  box-shadow: inset 0 1px 4px rgba(15, 30, 70, .06);
}
.result-ring.pass { --ring-color: var(--emerald); }
.result-ring.fail { --ring-color: var(--danger); }
.result-score {
  position: relative;
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--ink);
}
.result-ring.pass .result-score { color: var(--emerald-deep); }
.result-ring.fail .result-score { color: var(--danger); }

.result-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin: 22px 0;
}
.result-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 96px;
  padding: 16px 20px;
  border-radius: var(--r-md);
  background: #f7f9fc;
  border: 1px solid var(--line);
  font-weight: 800;
  font-size: 1.5rem;
}
.result-stat.correct { color: var(--emerald-deep); background: rgba(16, 185, 129, .07); border-color: rgba(16, 185, 129, .25); }
.result-stat.wrong { color: var(--danger); background: rgba(225, 29, 72, .06); border-color: rgba(225, 29, 72, .22); }
.result-stat.skipped { color: var(--muted); }
.result-stat span { font-size: .78rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }

.result-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 26px 0 20px;
}
.result-filters button {
  padding: 8px 16px;
  font-weight: 700;
  font-size: .88rem;
  color: var(--muted);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}
.result-filters button:hover { color: var(--ink); border-color: rgba(37, 99, 235, .35); }
.result-filters button.is-active {
  color: #fff;
  background-image: var(--grad);
  border-color: transparent;
  box-shadow: 0 6px 14px rgba(37, 99, 235, .26);
}

.result-review {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 24px;
  text-align: left;
}
.result-retake { margin-top: 24px; }

/* --- Loading --- */
.quiz-loading {
  display: grid;
  place-items: center;
  gap: 18px;
  padding: 80px 20px;
  color: var(--muted);
  font-weight: 600;
}
.spinner {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 3px solid rgba(37, 99, 235, .18);
  border-top-color: var(--blue);
  animation: spin .8s linear infinite;
}

/* ==========================================================================
   19. MOTION / REVEAL
   ========================================================================== */
/* Hidden state applies ONLY when JS is confirmed (html.js, set synchronously in
   <head>). Without JS — or if the observer never fires — content stays visible. */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
}
.reveal.in-view {
  opacity: 1;
  transform: none;
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
/* Tasteful stagger for grid children */
.feature-grid .feature-card.reveal.in-view { transition-delay: calc(var(--i, 0) * 60ms); }

@keyframes spin { to { transform: rotate(360deg); } }

@keyframes blob-float {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(4%, -3%, 0) scale(1.08); }
  100% { transform: translate3d(-3%, 4%, 0) scale(.96); }
}

@keyframes pulse-warn {
  0%, 100% { opacity: 1; }
  50% { opacity: .55; }
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-lg { grid-column: span 2; }
}

@media (max-width: 900px) {
  /* Mobile nav: the whole menu (links + auth CTAs) drops down from the bar. */
  .nav-menu {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin: 0;
    padding: 16px 20px 24px;
    background: rgba(255, 255, 255, .97);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--sh-lg);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform .3s var(--ease), opacity .3s var(--ease);
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
  }
  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
  }
  .nav-links a { padding: 12px 14px; font-size: 1rem; border-radius: var(--r-md); }
  .nav-cta {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding-top: 10px;
    margin-top: 2px;
    border-top: 1px solid var(--line);
  }
  .nav-cta .btn { width: 100%; justify-content: center; }
  body.nav-open .nav-menu {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  body.nav-open { overflow: hidden; }
  .nav-burger { display: flex; margin-left: 4px; }
  /* Push the bar utilities (theme + language) to the right edge. */
  .nav-actions { margin-left: auto; gap: 8px; }

  /* Hero collapses */
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-copy { max-width: 100%; margin-inline: auto; }
  .hero-lead { margin-inline: auto; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { max-width: 460px; margin: 8px auto 0; order: -1; }
  .hero-qcard { left: 0; }

  .price-grid { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
  .price-card.is-pop { transform: none; }
  .price-card.is-pop:hover { transform: translateY(-4px); }
  .testi-grid { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .nav { gap: 12px; }
  .brand-text { font-size: .92rem; }
  .brand-text em { font-size: .62rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-lg { grid-column: span 1; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
  .field-row { grid-template-columns: 1fr; }
  .mode-cards { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .q-nav .btn { min-width: 0; flex: 1; }
  .dash-head { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 380px) {
  .container { padding-inline: 16px; }
  .stat-cards { grid-template-columns: 1fr; }
  .hero-stats { gap: 16px; }
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
  .hero-qcard { transform: none !important; }
}

/* ── Quiz engine helper states (toast + inline messages) ───────────── */
.quiz-message{
  max-width:560px;margin:48px auto;padding:32px;text-align:center;
  background:var(--surface,#fff);border:1px solid var(--border,#e6eaf2);
  border-radius:var(--r-lg,20px);box-shadow:var(--sh-md,0 8px 30px rgba(16,24,40,.08));
}
.quiz-message p{color:var(--muted,#5b6577);margin:0 0 20px}
.quiz-toast{
  position:fixed;left:50%;bottom:28px;transform:translateX(-50%);
  background:#0b1324;color:#fff;padding:12px 20px;border-radius:999px;
  font-weight:600;font-size:.9rem;box-shadow:0 12px 30px rgba(11,19,36,.35);
  z-index:120;max-width:90vw;text-align:center;
  animation:toastIn .25s ease;
}
.quiz-toast.is-error{background:#b42318}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,8px)}to{opacity:1}}
@media (prefers-reduced-motion: reduce){.quiz-toast{animation:none}}

/* ==========================================================================
   20. THEME TOGGLE (sun / moon) + anchor offset
   ========================================================================== */
:root { color-scheme: light; }

/* Sticky-header-aware anchor scrolling */
[id] { scroll-margin-top: calc(var(--header-h) + 20px); }

.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-2);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease), transform .2s var(--ease);
}
.theme-toggle:hover { color: var(--blue-deep); border-color: rgba(37, 99, 235, .4); transform: translateY(-1px); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .ico-sun { display: none; }
.theme-toggle .ico-moon { display: block; }

/* ==========================================================================
   21. DARK THEME
   --------------------------------------------------------------------------
   The whole design system is token-driven, so the palette swap cascades.
   Below the token block we patch the handful of surfaces that hard-code a
   light value (translucent glass bars, form fields, segmented controls…).
   ========================================================================== */
[data-theme="dark"] {
  color-scheme: dark;

  --ink: #eaf0fb;
  --ink-2: #c3cee2;
  --muted: #93a1bd;
  --muted-2: #6f7e9c;
  --line: rgba(148, 163, 184, .16);
  --line-2: rgba(148, 163, 184, .10);

  --paper: #121b30;          /* card / surface */
  --bg: #0b1220;             /* page background */
  --bg-tint: #0e1729;        /* tinted section */

  --blue: #5b8bff;
  --blue-bright: #6f9bff;
  --blue-deep: #93b4ff;
  --emerald: #2dd4a7;
  --emerald-deep: #34d399;

  --grad-deep: linear-gradient(135deg, #0a1430 0%, #122a63 45%, #0a4a3c 100%);

  --sh-xs: 0 1px 2px rgba(0, 0, 0, .4);
  --sh-sm: 0 2px 8px rgba(0, 0, 0, .45), 0 1px 2px rgba(0, 0, 0, .3);
  --sh-md: 0 10px 28px rgba(0, 0, 0, .5), 0 2px 6px rgba(0, 0, 0, .35);
  --sh-lg: 0 20px 52px rgba(0, 0, 0, .6), 0 6px 16px rgba(0, 0, 0, .4);
  --sh-xl: 0 34px 84px rgba(0, 0, 0, .68), 0 10px 28px rgba(0, 0, 0, .45);
  --sh-ring: 0 0 0 4px rgba(91, 139, 255, .26);
}

[data-theme="dark"] body { background: var(--bg); }
[data-theme="dark"] ::selection { background: rgba(91, 139, 255, .28); }

/* Glass / translucent bars */
[data-theme="dark"] .site-header { background: rgba(11, 18, 32, .68); }
[data-theme="dark"] .site-header.is-scrolled { background: rgba(11, 18, 32, .82); box-shadow: 0 6px 24px rgba(0, 0, 0, .5); }
[data-theme="dark"] .nav-menu { background: rgba(13, 22, 40, .97); }
[data-theme="dark"] .quiz-bar { background: rgba(13, 22, 40, .8); }
[data-theme="dark"] .hero-qcard { background: rgba(18, 27, 48, .82); border-color: rgba(148, 163, 184, .18); }

/* Theme toggle icon swap */
[data-theme="dark"] .theme-toggle .ico-sun { display: block; }
[data-theme="dark"] .theme-toggle .ico-moon { display: none; }

/* Form fields */
[data-theme="dark"] .input,
[data-theme="dark"] select.input,
[data-theme="dark"] input.input { background: #0e1830; color: var(--ink); }
[data-theme="dark"] .input:focus,
[data-theme="dark"] select.input:focus { background: #0f1c38; }
[data-theme="dark"] select.input {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2393a1bd' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
}

/* Tinted neutrals that were hard-coded light */
[data-theme="dark"] .seg { background: #0e1830; }
[data-theme="dark"] .seg-btn.is-active { background: #1b2848; color: var(--blue-deep); }
[data-theme="dark"] .q-option-key,
[data-theme="dark"] .q-nav-cell,
[data-theme="dark"] .quiz-timer { background: #1a2542; }
[data-theme="dark"] .q-option:hover { background: #16223f; }
[data-theme="dark"] .btn-ghost:hover { background: #16223f; }
[data-theme="dark"] .q-feedback { background: #0e1830; }
[data-theme="dark"] .qopt { background: rgba(255, 255, 255, .05); }
[data-theme="dark"] .result-stat { background: #0e1830; }
[data-theme="dark"] .quiz-progress { background: #1f2c4d; }
[data-theme="dark"] .result-ring { background: conic-gradient(var(--ring-color) calc(var(--pct) * 1%), #1f2c4d 0); }
[data-theme="dark"] .dash-table tbody tr:nth-child(even) { background: rgba(255, 255, 255, .025); }
[data-theme="dark"] .dash-table tbody tr:hover { background: rgba(91, 139, 255, .08); }
[data-theme="dark"] .quiz-message { background: var(--paper); border-color: var(--line); }
[data-theme="dark"] .feature-icon { background: linear-gradient(135deg, rgba(91, 139, 255, .18), rgba(45, 212, 167, .16)); border-color: rgba(91, 139, 255, .22); }
[data-theme="dark"] img.hero-img { filter: drop-shadow(0 30px 60px rgba(0, 0, 0, .55)); }

/* Smooth, contained theme cross-fade (skipped under reduced-motion) */
@media (prefers-reduced-motion: no-preference) {
  body, .site-header, .feature-card, .paper-card, .price-card, .testi-card,
  .q-card, .input, .seg, .stat-card { transition: background-color .35s var(--ease), border-color .35s var(--ease), color .35s var(--ease); }
}

/* ==========================================================================
   22. V2 COMPONENT LIBRARY
   Exam hub · exam detail · features page · quiz extras.
   Per-exam accent is passed inline as --accent / --accent2; everything else
   is token-driven so light & dark themes both work automatically.
   ========================================================================== */

/* --- Shared bits --------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .02em;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  color: var(--muted);
  background: var(--paper);
  white-space: nowrap;
}
.badge::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: .9; }
.badge.is-live { color: var(--emerald-deep); background: rgba(16, 185, 129, .10); border-color: rgba(16, 185, 129, .32); }
.badge.is-soon { color: var(--warm); background: rgba(245, 158, 11, .10); border-color: rgba(245, 158, 11, .32); }
.badge.is-info { color: var(--blue-deep); background: rgba(37, 99, 235, .08); border-color: rgba(37, 99, 235, .22); }
.badge.is-info::before, .badge.is-plain::before { display: none; }
.badge.is-plain { color: var(--ink-2); }

.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: .86rem; font-weight: 600; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--blue-deep); }
.breadcrumb .sep { opacity: .5; }
.breadcrumb .here { color: var(--ink-2); }

.section-head.start { text-align: left; max-width: 720px; margin-left: 0; margin-right: 0; }
.section-head.start h2 { margin-inline: 0; }

/* --- Exam hub (/exams) --------------------------------------------------- */
.exam-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 22px;
}
.exam-card {
  --accent: var(--blue);
  --accent2: var(--emerald);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 26px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  color: var(--ink);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.exam-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: .9;
}
.exam-card::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%);
  pointer-events: none;
  opacity: .7;
  transition: opacity .3s var(--ease);
}
.exam-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sh-lg);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  color: var(--ink);
}
.exam-card:hover::after { opacity: 1; }
.exam-card-top { position: relative; display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.exam-glyph {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 15px;
  font-size: 1.6rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent) 38%, transparent);
}
.exam-card h3 { position: relative; font-size: 1.32rem; margin-bottom: 4px; }
.exam-abbr { font-weight: 800; color: var(--accent); }
.exam-card-reg { position: relative; font-size: .82rem; font-weight: 600; color: var(--muted-2); margin-bottom: 12px; }
.exam-card p { position: relative; color: var(--muted); font-size: .96rem; flex-grow: 1; }
.exam-card-meta { position: relative; display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 16px; }
.exam-chip {
  font-size: .76rem;
  font-weight: 700;
  color: var(--ink-2);
  padding: 5px 11px;
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
}
.exam-card-foot { position: relative; display: flex; align-items: center; justify-content: space-between; }
.exam-go { font-weight: 800; font-size: .92rem; color: var(--accent); transition: transform .2s var(--ease); }
.exam-card:hover .exam-go { transform: translateX(4px); }

/* --- Exam detail (/exams/:slug) ----------------------------------------- */
.exam-hero {
  --accent: var(--blue);
  --accent2: var(--emerald);
  position: relative;
  overflow: hidden;
  padding-block: clamp(40px, 7vw, 80px) clamp(32px, 5vw, 52px);
  background:
    radial-gradient(48% 80% at 12% -10%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 60%),
    radial-gradient(42% 70% at 92% 0%, color-mix(in srgb, var(--accent2) 18%, transparent), transparent 60%),
    var(--bg);
}
.exam-hero-glyph {
  display: inline-grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 18px;
  font-size: 2rem;
  margin-bottom: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 12px 28px color-mix(in srgb, var(--accent) 38%, transparent);
}
.exam-hero h1 { font-size: clamp(1.9rem, 4.2vw, 2.9rem); max-width: 18ch; }
.exam-hero .exam-sub { font-size: 1.05rem; font-weight: 600; color: var(--accent); margin-top: 6px; }
.exam-hero .page-lead { margin-left: 0; }
.exam-hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.exam-hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.exam-hero .btn-primary { background-image: linear-gradient(120deg, var(--accent), var(--accent2)); }

/* Two-column overview + who-for */
.info-split { display: grid; grid-template-columns: 1.5fr 1fr; gap: 28px; align-items: start; }
.info-block h2 { font-size: 1.5rem; margin-bottom: 12px; }
.info-block p { color: var(--muted); font-size: 1.02rem; line-height: 1.8; }
.info-card {
  padding: 24px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
}
.info-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.info-card p { color: var(--muted); font-size: .96rem; }

/* Quick facts */
.fact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.fact {
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-xs);
}
.fact-label { font-size: .76rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 6px; }
.fact-value { font-size: 1rem; font-weight: 700; color: var(--ink); line-height: 1.45; }

/* Papers / syllabus list */
.syllabus-list { display: flex; flex-direction: column; gap: 18px; }
.syl-paper {
  --accent: var(--blue);
  padding: 24px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.syl-paper:hover { box-shadow: var(--sh-md); border-color: color-mix(in srgb, var(--accent) 30%, transparent); }
.syl-paper-head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 12px; }
.syl-no {
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  min-width: 46px;
  height: 40px;
  padding-inline: 10px;
  font-weight: 800;
  font-size: .95rem;
  color: #fff;
  border-radius: var(--r-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent2, var(--accent)));
  box-shadow: 0 6px 14px color-mix(in srgb, var(--accent) 30%, transparent);
}
.syl-paper-titles { flex-grow: 1; }
.syl-paper-titles h3 { font-size: 1.14rem; line-height: 1.3; }
.syl-paper-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 6px; font-size: .84rem; font-weight: 600; color: var(--muted); }
.syl-paper-meta span { display: inline-flex; align-items: center; gap: 5px; }
.syl-paper > p { color: var(--muted); font-size: .98rem; margin-bottom: 14px; }
.syl-topics { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 16px; }
.syl-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* Prep tips */
.tips-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.tip { display: flex; gap: 14px; padding: 18px 20px; border-radius: var(--r-md); background: var(--paper); border: 1px solid var(--line); box-shadow: var(--sh-xs); }
.tip-num {
  flex-shrink: 0;
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-weight: 800;
  font-size: .9rem;
  color: #fff;
  background-image: var(--grad);
}
.tip p { color: var(--ink-2); font-size: .96rem; line-height: 1.6; }

/* --- Features page (/features) ------------------------------------------ */
.func-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.func-card {
  padding: 26px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.func-card:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); border-color: rgba(37, 99, 235, .25); }
.func-ico {
  display: inline-grid;
  place-items: center;
  width: 50px;
  height: 50px;
  font-size: 1.5rem;
  border-radius: 14px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(37, 99, 235, .12), rgba(16, 185, 129, .12));
  border: 1px solid rgba(37, 99, 235, .14);
}
.func-card h3 { font-size: 1.16rem; margin-bottom: 8px; }
.func-card p { color: var(--muted); font-size: .96rem; line-height: 1.65; }

/* Mode showcase (3 big cards) */
.mode-showcase { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.mode-show {
  position: relative;
  overflow: hidden;
  padding: 30px 26px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
}
.mode-show::before { content: ''; position: absolute; inset: 0 0 auto 0; height: 4px; background: var(--grad); }
.mode-show-emoji { font-size: 2.2rem; margin-bottom: 14px; }
.mode-show h3 { font-size: 1.28rem; margin-bottom: 10px; }
.mode-show p { color: var(--muted); font-size: .98rem; line-height: 1.7; }

/* How-it-works steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step { position: relative; padding: 26px 22px; border-radius: var(--r-lg); background: var(--paper); border: 1px solid var(--line); box-shadow: var(--sh-xs); }
.step-num {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  font-weight: 800;
  font-size: 1.05rem;
  color: #fff;
  border-radius: 12px;
  background-image: var(--grad);
  box-shadow: 0 8px 18px rgba(37, 99, 235, .28);
}
.step h4 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: .94rem; line-height: 1.6; }

/* --- Quiz extras --------------------------------------------------------- */
.demo-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  margin-bottom: 18px;
  border-radius: var(--r-md);
  background: rgba(245, 158, 11, .1);
  border: 1px solid rgba(245, 158, 11, .32);
}
.demo-banner-tag { font-size: .9rem; font-weight: 700; color: var(--warm); }
.quiz-demo-pill {
  display: inline-block;
  margin-top: 14px;
  font-size: .85rem;
  font-weight: 700;
  color: var(--warm);
  padding: 6px 14px;
  border-radius: var(--r-pill);
  background: rgba(245, 158, 11, .1);
  border: 1px solid rgba(245, 158, 11, .3);
}

.q-actions { display: inline-flex; align-items: center; gap: 8px; }
.q-act {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .8rem;
  font-weight: 700;
  color: var(--muted);
  padding: 6px 11px;
  border-radius: var(--r-pill);
  background: transparent;
  border: 1px solid var(--line);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}
.q-act:hover { color: var(--blue-deep); border-color: rgba(37, 99, 235, .4); }
.q-act.is-active { color: var(--blue-deep); background: rgba(37, 99, 235, .1); border-color: rgba(37, 99, 235, .4); }
.q-act:disabled { opacity: .6; cursor: default; }

.q-note { margin-top: 16px; }
.q-note-area {
  width: 100%;
  min-height: 84px;
  padding: 12px 14px;
  font: inherit;
  font-size: .95rem;
  color: var(--ink);
  background: #fbfcfe;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  resize: vertical;
}
.q-note-area:focus { outline: none; border-color: var(--blue-bright); box-shadow: var(--sh-ring); background: var(--paper); }
[data-theme="dark"] .q-note-area { background: #0e1830; }
.q-note-status { display: inline-block; margin-top: 6px; font-size: .8rem; font-weight: 700; color: var(--emerald-deep); }

/* Report modal */
.report-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(11, 19, 36, .55);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  animation: toastIn .2s ease;
}
.report-modal {
  width: 100%;
  max-width: 440px;
  padding: 26px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--sh-xl);
}
.report-modal-title { font-size: 1.2rem; margin-bottom: 16px; }
.report-reasons { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 14px; }
.report-reason {
  padding: 10px 12px;
  font-weight: 700;
  font-size: .88rem;
  color: var(--muted);
  background: var(--paper);
  border: 1.5px solid var(--line);
  border-radius: var(--r-md);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}
.report-reason:hover { color: var(--ink); border-color: rgba(37, 99, 235, .4); }
.report-reason.is-active { color: var(--blue-deep); background: rgba(37, 99, 235, .08); border-color: var(--blue); }
.report-comment {
  width: 100%;
  min-height: 80px;
  padding: 12px 14px;
  font: inherit;
  font-size: .95rem;
  color: var(--ink);
  background: #fbfcfe;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  resize: vertical;
  margin-bottom: 18px;
}
.report-comment:focus { outline: none; border-color: var(--blue-bright); box-shadow: var(--sh-ring); background: var(--paper); }
[data-theme="dark"] .report-comment { background: #0e1830; }
.report-actions { display: flex; justify-content: flex-end; gap: 10px; }

/* Three-mode setup grid */
.mode-cards { grid-template-columns: repeat(3, 1fr); }

/* --- Responsive ---------------------------------------------------------- */
@media (max-width: 900px) {
  .info-split { grid-template-columns: 1fr; }
  .mode-showcase { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .mode-cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .report-reasons { grid-template-columns: 1fr; }
  .exam-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   ADMIN CONSOLE  (/admin)
   ========================================================================== */
.admin-breakdown { margin: -6px 0 4px; font-size: .9rem; }
.admin-card { padding: 22px; margin-bottom: 8px; }
.admin-card > p { margin-top: 0; }
.admin-help { margin: 12px 0 16px; font-size: .9rem; }
.admin-help summary { cursor: pointer; font-weight: 600; color: var(--blue-deep); }
.admin-help ul { margin: 12px 0; padding-left: 20px; }
.admin-help li { margin: 5px 0; color: var(--ink-2); }
.admin-help code {
  background: var(--bg-tint); border: 1px solid var(--line);
  border-radius: 6px; padding: 1px 6px; font-size: .85em;
}
.admin-sample {
  background: var(--bg-tint); border: 1px solid var(--line);
  border-radius: var(--r-sm); padding: 12px; overflow-x: auto;
  font-size: .8rem; line-height: 1.5; white-space: pre;
}
.admin-textarea {
  width: 100%; box-sizing: border-box; resize: vertical;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: .85rem; line-height: 1.5; padding: 14px;
  border: 1px solid var(--line); border-radius: var(--r-md);
  background: var(--paper); color: var(--ink);
}
.admin-textarea:focus { outline: 2px solid var(--blue-bright); outline-offset: 1px; border-color: transparent; }
.admin-actions { display: flex; gap: 12px; margin-top: 14px; }
.admin-result {
  margin-top: 16px; padding: 14px 16px; border-radius: var(--r-md);
  border: 1px solid var(--line); font-size: .92rem; line-height: 1.5;
}
.admin-result.ok   { background: rgba(16,185,129,.08); border-color: rgba(16,185,129,.35); }
.admin-result.warn { background: rgba(245,158,11,.09); border-color: rgba(245,158,11,.4); }
.admin-result.err  { background: rgba(225,29,72,.07);  border-color: rgba(225,29,72,.35); }
.admin-result ul { margin: 8px 0 0; padding-left: 20px; }
.admin-result details summary { cursor: pointer; font-weight: 600; }
.admin-count {
  display: inline-block; min-width: 22px; text-align: center;
  background: var(--blue); color: #fff; border-radius: var(--r-pill);
  font-size: .8rem; padding: 1px 8px; vertical-align: middle;
}
.admin-reports td { vertical-align: top; }
.admin-qtext { font-weight: 400; }
.admin-report-actions { white-space: nowrap; }
.btn-sm { padding: 5px 12px; font-size: .82rem; }

[data-theme="dark"] .admin-help code,
[data-theme="dark"] .admin-sample,
[data-theme="dark"] .admin-textarea { background: var(--bg-tint); color: var(--ink); }

/* ==========================================================================
   PER-PAPER LANDING PAGE  (/exams/:slug/:code)
   ========================================================================== */
.paper-hero {
  background:
    radial-gradient(1200px 400px at 12% -10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%),
    var(--bg-tint);
  padding: 40px 0 52px;
  border-bottom: 1px solid var(--line);
}
.paper-eyebrow { display: inline-block; font-weight: 700; color: var(--accent); font-size: .92rem; margin-bottom: 8px; }
.paper-hero h1 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); line-height: 1.15; margin: 0 0 12px; }
.paper-fact-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.paper-fact {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 18px 16px; text-align: center; border-top: 3px solid var(--accent);
}
.paper-fact-v { display: block; font-size: 1.5rem; font-weight: 800; color: var(--ink); }
.paper-fact-k { display: block; font-size: .82rem; color: var(--muted); margin-top: 4px; }

.chapter-bars { display: flex; flex-direction: column; gap: 14px; max-width: 640px; }
.chapter-bar-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; font-size: .95rem; }
.chapter-bar-track { height: 10px; border-radius: var(--r-pill); background: var(--bg-tint); overflow: hidden; }
.chapter-bar-track span {
  display: block; height: 100%; border-radius: var(--r-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.btn-ghost-light { background: rgba(255,255,255,.14); color: #fff; border: 1px solid rgba(255,255,255,.4); }
.btn-ghost-light:hover { background: rgba(255,255,255,.24); }
.syl-guide-link { align-self: center; font-weight: 600; color: var(--accent); font-size: .92rem; }

/* ==========================================================================
   BLOG INDEX  (/blog)
   ========================================================================== */
.blog-hero { padding-bottom: 8px; }
.blog-group { padding-top: 24px; padding-bottom: 24px; }
.blog-group-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.blog-group-head h2 { font-size: 1.4rem; margin: 0; }
.blog-group-glyph { margin-right: 6px; }
.blog-group-link { font-weight: 600; color: var(--accent); white-space: nowrap; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
.blog-card {
  display: flex; flex-direction: column; gap: 10px;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 22px; transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  border-top: 3px solid var(--accent);
}
.blog-card:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(2,8,23,.10); border-color: var(--accent); }
.blog-card-top { display: flex; align-items: center; justify-content: space-between; }
.blog-cat { font-size: .76rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--accent); }
.blog-card h3 { font-size: 1.12rem; line-height: 1.3; margin: 0; color: var(--ink); }
.blog-card p { font-size: .92rem; color: var(--muted); margin: 0; flex-grow: 1; line-height: 1.55; }
.blog-card-meta { font-size: .8rem; color: var(--muted-2); }

/* ==========================================================================
   BLOG ARTICLE  (/blog/:slug)
   ========================================================================== */
.container-narrow { max-width: 760px; }
.article-hero {
  background:
    radial-gradient(1100px 360px at 50% -20%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%),
    var(--bg-tint);
  padding: 36px 0 32px; border-bottom: 1px solid var(--line); text-align: left;
}
.article-cat { display: inline-block; font-weight: 700; color: var(--accent); font-size: .9rem; margin-bottom: 10px; }
.article-hero h1 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); line-height: 1.2; margin: 0 0 14px; }
.article-meta { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: .9rem; }
.article-body { padding: 36px 0 56px; }
.article-body h2 { font-size: 1.4rem; margin: 36px 0 12px; }
.article-body p { line-height: 1.75; color: var(--ink-2); margin: 0 0 16px; }
.article-lead { font-size: 1.12rem; color: var(--ink) !important; }
.article-facts { margin: 0 0 18px; padding-left: 4px; list-style: none; }
.article-facts li { padding: 8px 0; border-bottom: 1px dashed var(--line); line-height: 1.6; color: var(--ink-2); }
.article-facts strong { color: var(--ink); }
.article-topics { margin: 12px 0 8px; }
.article-plan { margin: 0 0 20px; padding-left: 22px; }
.article-plan li { margin: 0 0 16px; line-height: 1.6; }
.article-plan strong { display: block; margin-bottom: 4px; color: var(--ink); }
.article-plan p { margin: 0; }
.article-cta {
  margin: 32px 0; padding: 26px; border-radius: var(--r-lg);
  background: var(--bg-tint); border: 1px solid var(--line); border-left: 4px solid var(--accent);
}
.article-cta h3 { margin: 0 0 8px; font-size: 1.2rem; }
.article-cta p { margin: 0 0 16px; }
.article-related { margin-top: 40px; border-top: 1px solid var(--line); padding-top: 24px; }
.related-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.related-item {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 14px 16px; font-weight: 600; color: var(--ink); transition: border-color .15s ease, transform .15s ease;
}
.related-item:hover { border-color: var(--accent); transform: translateX(2px); }
.related-arrow { color: var(--accent); }
.article-disclaimer { margin-top: 32px; font-size: .82rem; }

@media (max-width: 720px) {
  .paper-fact-row { grid-template-columns: repeat(2, 1fr); }
}

/* ==========================================================================
   ADMIN MANAGEMENT (questions / analytics / results)
   ========================================================================== */
.admin-nav { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 22px; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.admin-nav-link {
  padding: 7px 14px; border-radius: var(--r-pill); font-weight: 600; font-size: .9rem;
  color: var(--muted); border: 1px solid transparent;
}
.admin-nav-link:hover { background: var(--bg-tint); color: var(--ink); }
.admin-nav-link.is-active { background: var(--blue); color: #fff; }

.admin-filter { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 16px; margin-bottom: 14px; }
.admin-input {
  padding: 9px 12px; border: 1px solid var(--line); border-radius: var(--r-sm);
  background: var(--paper); color: var(--ink); font-size: .92rem; font-family: inherit;
}
.admin-input:focus { outline: 2px solid var(--blue-bright); outline-offset: 1px; border-color: transparent; }
.admin-input-grow { flex: 1 1 240px; }
.admin-resultcount { margin: 6px 2px 10px; font-size: .88rem; }
.admin-pager { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; }

.exam-pill {
  display: inline-block; font-size: .72rem; font-weight: 700; text-transform: uppercase;
  padding: 2px 8px; border-radius: var(--r-pill); background: var(--bg-tint); color: var(--ink-2);
}
.admin-qprev { max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.admin-qtable td { vertical-align: middle; }
.score-badge.mid { background: rgba(245,158,11,.15); color: #b45309; }

/* Editor form */
.admin-editor { padding: 22px; display: flex; flex-direction: column; gap: 16px; }
.editor-row { display: flex; flex-wrap: wrap; gap: 14px; }
.editor-row.two > .editor-field { flex: 1 1 320px; }
.editor-field { display: flex; flex-direction: column; gap: 6px; flex: 1 1 auto; }
.editor-field > span { font-size: .82rem; font-weight: 600; color: var(--muted); }
.editor-field .admin-input { width: 100%; box-sizing: border-box; }
.editor-check { flex-direction: row; align-items: center; gap: 8px; align-self: flex-end; padding-bottom: 9px; }
.editor-check span { color: var(--ink); font-weight: 600; }
.admin-mono { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: .85rem; }
/* Per-paper pricing editor */
.admin-subcard { margin: 6px 0 2px; padding: 14px 16px; border: 1px dashed var(--line); border-radius: 12px; background: var(--surface-2, rgba(0,0,0,.02)); }
.admin-subcard > summary { cursor: pointer; font-weight: 700; color: var(--ink); }
.admin-subcard > p { margin: 10px 0 14px; }
.pp-family { margin-bottom: 14px; }
.pp-family-head { margin: 6px 0 8px; font-size: .9rem; color: var(--ink); }
.pp-row { align-items: center; gap: 10px; margin-bottom: 8px; }
.pp-paper-label { flex: 0 0 90px; font-size: .82rem; font-weight: 600; color: var(--muted); }
.pp-slot { display: inline-flex; gap: 6px; }
.pp-slot .pp-d { width: 78px; }
.pp-slot .pp-p { width: 104px; }
.admin-danger { margin-top: 22px; padding-top: 18px; border-top: 1px dashed var(--line); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #be123c; }

@media (max-width: 640px) {
  .admin-qprev { max-width: 160px; }
}

/* ==========================================================================
   PARITY BATCH — resume, case studies, dashboard depth, settings/XML
   ========================================================================== */
/* Resume banner (quiz setup) */
.resume-banner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  background: linear-gradient(120deg, rgba(37,99,235,.10), rgba(16,185,129,.10));
  border: 1px solid var(--line); border-left: 4px solid var(--blue);
  border-radius: var(--r-md); padding: 14px 16px; margin-bottom: 18px;
}
.resume-banner-text { font-weight: 600; color: var(--ink); }
.resume-banner-actions { display: flex; gap: 8px; }

/* Case-study stem */
.q-case { margin: 0 0 14px; border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; background: var(--bg-tint); }
.q-case-head { font-weight: 700; font-size: .9rem; padding: 8px 12px; background: var(--paper); border-bottom: 1px solid var(--line); color: var(--ink-2); }
.q-case-frame { width: 100%; border: 0; display: block; background: #fff; min-height: 80px; }

/* Dashboard exam tabs + weak rows + notes */
.dash-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 18px; }
.dash-tab { padding: 7px 16px; border-radius: var(--r-pill); font-weight: 600; font-size: .9rem; color: var(--muted); border: 1px solid var(--line); }
.dash-tab:hover { background: var(--bg-tint); color: var(--ink); }
.dash-tab.is-active { background: var(--blue); color: #fff; border-color: var(--blue); }
.dash-table .row-weak td { background: rgba(225,29,72,.05); }
.note-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.note-card { padding: 16px; }
.note-card-meta { font-size: .8rem; color: var(--muted); margin-bottom: 6px; }
.note-card-q { font-size: .85rem; margin: 0 0 8px; }
.note-card-text { font-size: .95rem; color: var(--ink); white-space: pre-line; margin: 0; }

/* Attempt review */
.review-summary { justify-content: flex-start; gap: 14px; margin: 8px 0 20px; }
.review-list { display: flex; flex-direction: column; gap: 16px; }
.review-badge { font-weight: 800; font-size: 1.1rem; }
.review-badge.ok { color: var(--success); }
.review-badge.bad { color: var(--danger); }
.review-badge.skip { color: var(--muted-2); }
.q-your-tag { margin-left: auto; font-size: .72rem; font-weight: 700; color: var(--blue-deep); align-self: center; }

/* XML import progress */
.xml-progress { height: 10px; background: var(--bg-tint); border-radius: var(--r-pill); overflow: hidden; margin: 14px 0; }
#xml-progress-fill { height: 100%; width: 2%; background: linear-gradient(90deg, var(--blue), var(--emerald)); transition: width .2s ease; }

[data-theme="dark"] .q-case-frame { background: #0b1220; }

/* ==========================================================================
   LIGHT-FIRST POLISH · PRODUCT TOUR · CSS MOCK SCREENSHOTS
   ========================================================================== */
.skip-link {
  position: absolute; left: -9999px; top: 8px; z-index: 200;
  background: var(--blue); color: #fff; padding: 10px 16px; border-radius: var(--r-sm); font-weight: 600;
}
.skip-link:focus { left: 12px; }
:focus-visible { outline: 2px solid var(--blue-bright); outline-offset: 2px; border-radius: 4px; }

.hero-trust { margin-top: 14px; font-size: .9rem; }
.feature-how { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-direction: column; gap: 7px; }
.feature-how li { position: relative; padding-left: 22px; font-size: .92rem; color: var(--ink-2); line-height: 1.4; }
.feature-how li::before { content: "\2713"; position: absolute; left: 0; color: var(--emerald-deep); font-weight: 800; }

/* Device frame — makes a CSS mock read as a real screenshot */
.device-frame {
  border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden;
  background: var(--paper); box-shadow: 0 24px 60px rgba(2,8,23,.12), 0 4px 14px rgba(2,8,23,.06);
}
.device-bar {
  display: flex; align-items: center; gap: 7px; padding: 10px 14px;
  background: var(--bg-tint); border-bottom: 1px solid var(--line);
}
.device-dot { width: 10px; height: 10px; border-radius: 50%; background: #cfd6e2; }
.device-dot:nth-child(1) { background: #ff5f57; } .device-dot:nth-child(2) { background: #febc2e; } .device-dot:nth-child(3) { background: #28c840; }
.device-url { margin-left: 10px; font-size: .76rem; color: var(--muted); background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-pill); padding: 3px 12px; }
.device-screen { padding: 18px; background: var(--paper); }
.hero-visual .device-frame { max-width: 480px; margin-left: auto; }

/* Mock question card */
.mock-qcard { display: flex; flex-direction: column; gap: 12px; }
.mock-qhead { display: flex; align-items: center; justify-content: space-between; font-size: .8rem; }
.mock-tag { font-weight: 700; color: var(--blue-deep); background: var(--bg-tint); border-radius: var(--r-pill); padding: 3px 10px; }
.mock-hot { color: var(--warm); font-weight: 600; }
.mock-acts { color: var(--muted-2); letter-spacing: 2px; }
.mock-q { font-weight: 600; color: var(--ink); line-height: 1.5; margin: 0; }
.mock-q.sm { font-size: .9rem; font-weight: 500; color: var(--muted); }
.mock-opts { display: flex; flex-direction: column; gap: 8px; }
.mock-opt { border: 1px solid var(--line); border-radius: var(--r-md); padding: 10px 14px; font-size: .92rem; color: var(--ink-2); background: var(--paper); }
.mock-opt.is-correct { border-color: var(--emerald); background: rgba(16,185,129,.10); color: var(--emerald-deep); font-weight: 600; }
.mock-opt.is-wrong { border-color: var(--danger-soft); background: rgba(225,29,72,.07); color: var(--danger); }
.mock-expl { font-size: .86rem; color: var(--ink-2); background: var(--bg-tint); border-left: 3px solid var(--emerald); border-radius: 8px; padding: 10px 12px; line-height: 1.5; }
.mock-expl strong { color: var(--ink); }

/* Mock exam bar + navigator */
.mock-exam { display: flex; flex-direction: column; gap: 14px; }
.mock-bar { display: flex; align-items: center; gap: 12px; }
.mock-progress { flex: 1; height: 8px; border-radius: 999px; background: var(--bg-tint); overflow: hidden; }
.mock-progress span { display: block; height: 100%; background: linear-gradient(90deg, var(--blue), var(--emerald)); }
.mock-timer { font-weight: 700; color: var(--danger); font-variant-numeric: tabular-nums; }
.mock-submit { background: var(--blue); color: #fff; font-size: .8rem; font-weight: 600; padding: 5px 12px; border-radius: var(--r-pill); }
.mock-nav { display: grid; grid-template-columns: repeat(6, 1fr); gap: 7px; }
.mock-cell { aspect-ratio: 1; display: flex; align-items: center; justify-content: center; border-radius: 8px; font-size: .78rem; font-weight: 600; background: var(--bg-tint); color: var(--muted); border: 1px solid var(--line); }
.mock-cell.s-a { background: rgba(37,99,235,.12); color: var(--blue-deep); border-color: transparent; }
.mock-cell.s-c { background: rgba(16,185,129,.16); color: var(--emerald-deep); border-color: transparent; }
.mock-cell.s-w { background: rgba(225,29,72,.12); color: var(--danger); border-color: transparent; }
.mock-cell.s-f { background: rgba(245,158,11,.18); color: #b45309; border-color: transparent; }
.mock-cell.s-x { background: var(--bg-tint); }

/* Mock dashboard */
.mock-dash { display: flex; flex-direction: column; gap: 14px; }
.mock-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mock-stat { background: var(--bg-tint); border: 1px solid var(--line); border-radius: var(--r-md); padding: 12px; text-align: center; }
.mock-stat b { display: block; font-size: 1.4rem; color: var(--ink); }
.mock-stat span { font-size: .74rem; color: var(--muted); }
.mock-weak { display: flex; flex-direction: column; gap: 9px; }
.mock-weak-row { display: grid; grid-template-columns: 1fr 90px 36px; align-items: center; gap: 10px; font-size: .82rem; color: var(--ink-2); }
.mock-weak-row .bar { height: 8px; border-radius: 999px; background: var(--bg-tint); overflow: hidden; }
.mock-weak-row .bar b { display: block; height: 100%; background: var(--danger-soft); }
.mock-weak-row.ok .bar b { background: var(--emerald); }
.mock-weak-row em { font-style: normal; font-weight: 700; color: var(--danger); text-align: right; }
.mock-weak-row.ok em { color: var(--emerald-deep); }

/* Mock bilingual */
.mock-lang { display: flex; flex-direction: column; gap: 14px; }
.mock-lang-toggle { display: inline-flex; align-self: flex-start; border: 1px solid var(--line); border-radius: var(--r-pill); overflow: hidden; font-size: .82rem; font-weight: 600; }
.mock-lang-toggle span { padding: 6px 16px; color: var(--muted); }
.mock-lang-toggle span.on { background: var(--blue); color: #fff; }
.mock-lang-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.mock-lang-cols h5 { margin: 0 0 6px; font-size: .74rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.mock-lang-cols p { margin: 0; font-size: .9rem; color: var(--ink); line-height: 1.5; }

/* Tour — pure-CSS tabbed gallery (radio + sibling combinator, no JS) */
.tour { position: relative; }
.tour > input[type="radio"] { position: absolute; opacity: 0; pointer-events: none; }
.tour-tabs { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 26px; }
.tour-tabs label {
  cursor: pointer; padding: 9px 18px; border-radius: var(--r-pill); font-weight: 600; font-size: .92rem;
  color: var(--muted); border: 1px solid var(--line); background: var(--paper); transition: all .15s ease;
}
.tour-tabs label:hover { color: var(--ink); border-color: var(--blue-bright); }
.tour-panel { display: none; grid-template-columns: 1.1fr .9fr; gap: 36px; align-items: center; }
#tour-study:checked ~ .tour-stage .tour-study,
#tour-exam:checked ~ .tour-stage .tour-exam,
#tour-dash:checked ~ .tour-stage .tour-dash,
#tour-lang:checked ~ .tour-stage .tour-lang { display: grid; }
#tour-study:checked ~ .tour-tabs label[for="tour-study"],
#tour-exam:checked ~ .tour-tabs label[for="tour-exam"],
#tour-dash:checked ~ .tour-tabs label[for="tour-dash"],
#tour-lang:checked ~ .tour-tabs label[for="tour-lang"] { background: var(--blue); color: #fff; border-color: var(--blue); }
.tour-copy h3 { font-size: 1.5rem; margin: 0 0 12px; }
.tour-copy p { color: var(--muted); font-size: 1.05rem; line-height: 1.7; }

@media (max-width: 820px) {
  .tour-panel { grid-template-columns: 1fr; gap: 20px; }
  .hero-visual .device-frame { margin: 0 auto; }
}
@media (prefers-reduced-motion: reduce) {
  .tour-tabs label { transition: none; }
}

/* Mock-UI legibility in dark mode (light is default; these only apply on toggle) */
[data-theme="dark"] .mock-cell.s-f { color: #fbbf24; }
[data-theme="dark"] .mock-cell.s-a { color: #93c5fd; }
[data-theme="dark"] .mock-cell.s-c { color: #6ee7b7; }
[data-theme="dark"] .mock-cell.s-w { color: #fda4af; }
[data-theme="dark"] .mock-weak-row em { color: #fda4af; }
[data-theme="dark"] .mock-weak-row.ok em { color: #6ee7b7; }

/* Real screenshots inside device frames */
.device-frame.shot .device-screen { padding: 0; }
.shot-img { display: block; width: 100%; height: auto; }
/* Features page screenshot rows (zig-zag) */
.shot-rows { display: flex; flex-direction: column; gap: 48px; }
.shot-row { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.shot-row:nth-child(even) .shot-row-media { order: -1; }
.shot-row-copy h3 { font-size: 1.45rem; margin: 0 0 12px; }
.shot-row-copy p { color: var(--muted); font-size: 1.05rem; line-height: 1.7; margin: 0 0 14px; }
/* Paper-detail screenshot */
.paper-shot { max-width: 560px; margin: 8px auto 0; }
@media (max-width: 820px) {
  .shot-row { grid-template-columns: 1fr; gap: 20px; }
  .shot-row:nth-child(even) .shot-row-media { order: 0; }
}

/* ==========================================================================
   MULTI-DEVICE MOCKUP (practise on any platform)
   ========================================================================== */
.device-cluster {
  display: flex; align-items: flex-end; justify-content: center;
  gap: 0; margin: 8px auto 0; max-width: 760px; padding: 10px 0;
}
.device-cluster .dev img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top center; }

/* Laptop */
.dev-laptop { position: relative; z-index: 2; width: min(520px, 60vw); flex: 0 0 auto; }
.dev-laptop .dev-screen {
  border: 12px solid #1f2937; border-bottom: 0; border-radius: 16px 16px 0 0;
  aspect-ratio: 16 / 10; overflow: hidden; background: #0b1220;
  box-shadow: 0 22px 50px rgba(2, 8, 23, .18);
}
.dev-laptop .dev-base {
  width: 122%; margin-left: -11%; height: 16px;
  background: linear-gradient(#e2e8f0, #aeb8c7); border-radius: 0 0 14px 14px;
  box-shadow: 0 10px 18px rgba(2, 8, 23, .14); position: relative;
}
.dev-laptop .dev-base::after {
  content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 96px; height: 7px; background: #94a3b8; border-radius: 0 0 8px 8px;
}

/* Tablet — sits left, behind the laptop */
.dev-tablet {
  position: relative; z-index: 1; width: 178px; flex: 0 0 auto;
  margin: 0 -52px 26px 0; border: 11px solid #1f2937; border-radius: 22px;
  aspect-ratio: 3 / 4; overflow: hidden; background: #0b1220;
  box-shadow: 0 16px 34px rgba(2, 8, 23, .16);
}

/* Phone — sits right, in front */
.dev-phone {
  position: relative; z-index: 3; width: 124px; flex: 0 0 auto;
  margin: 0 0 10px -54px; border: 8px solid #0f172a; border-radius: 26px;
  aspect-ratio: 9 / 19; overflow: hidden; background: #0b1220;
  box-shadow: 0 18px 36px rgba(2, 8, 23, .22);
}
.dev-phone::before {
  content: ""; position: absolute; top: 6px; left: 50%; transform: translateX(-50%);
  width: 46px; height: 5px; background: #0f172a; border-radius: 999px; z-index: 4;
}

@media (max-width: 560px) {
  .device-cluster { transform: scale(.82); transform-origin: top center; margin-bottom: -28px; }
  .dev-tablet { display: none; }
  .dev-laptop { width: 72vw; }
  .dev-phone { margin-left: -44px; }
}

/* Paper page: stats inside the hero + "other papers" links */
.paper-hero-facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 30px; max-width: 720px; }
.paper-links { display: flex; flex-wrap: wrap; gap: 12px; }
.paper-link {
  display: flex; align-items: center; gap: 10px; flex: 1 1 230px; max-width: 360px;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 12px 16px; transition: border-color .15s ease, transform .15s ease;
}
.paper-link:hover { border-color: var(--accent); transform: translateY(-2px); }
.paper-link.is-current { border-color: var(--accent); background: var(--bg-tint); }
.paper-link-code {
  display: inline-flex; align-items: center; justify-content: center; min-width: 34px; height: 34px;
  border-radius: 8px; background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff; font-weight: 800; font-size: .85rem; padding: 0 7px; flex: 0 0 auto;
}
.paper-link-name { font-weight: 600; color: var(--ink); font-size: .92rem; line-height: 1.3; }
.paper-link-live { margin-left: auto; color: var(--success); font-size: .6rem; }
@media (max-width: 640px) { .paper-hero-facts { grid-template-columns: repeat(2, 1fr); } }

/* ==========================================================================
   PAPER PAGE — contentful sections (sample Q, why, comparison, trust)
   ========================================================================== */
.paper-trust { margin-top: 16px; font-size: .9rem; }
.paper-stars { color: var(--gold); letter-spacing: 1px; }

/* Sample question card */
.sample-card { background: var(--paper); border: 1px solid var(--line); border-top: 3px solid var(--accent); border-radius: var(--r-lg); padding: 24px; box-shadow: 0 12px 30px rgba(2,8,23,.06); }
.sample-meta { font-size: .82rem; color: var(--muted); margin-bottom: 10px; }
.sample-q { font-size: 1.1rem; font-weight: 600; color: var(--ink); line-height: 1.6; margin: 0 0 16px; white-space: pre-line; }
.sample-opts { display: flex; flex-direction: column; gap: 9px; margin-bottom: 16px; }
.sample-opt { display: flex; align-items: flex-start; gap: 12px; border: 1px solid var(--line); border-radius: var(--r-md); padding: 11px 14px; color: var(--ink-2); line-height: 1.5; }
.sample-opt.is-correct { border-color: var(--emerald); background: rgba(16,185,129,.08); color: var(--emerald-deep); font-weight: 600; }
.sample-opt-key { flex: 0 0 auto; width: 24px; height: 24px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--bg-tint); font-weight: 700; font-size: .8rem; }
.sample-opt.is-correct .sample-opt-key { background: var(--emerald); color: #fff; }
.sample-reveal { margin: 4px 0 16px; border-top: 1px dashed var(--line); padding-top: 14px; }
.sample-reveal summary { cursor: pointer; font-weight: 600; color: var(--accent); }
.sample-answer { margin: 10px 0 6px; }
.sample-expl { color: var(--ink-2); line-height: 1.7; margin: 0; white-space: pre-line; }

/* Why cards */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.why-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 24px; border-top: 3px solid var(--accent); }
.why-ico { font-size: 1.8rem; margin-bottom: 10px; }
.why-card h3 { font-size: 1.08rem; margin: 0 0 8px; color: var(--ink); }
.why-card p { color: var(--muted); font-size: .96rem; line-height: 1.65; margin: 0; }

/* Comparison table */
.compare-table { width: 100%; border-collapse: collapse; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; }
.compare-table th, .compare-table td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); font-size: .95rem; }
.compare-table thead th { background: var(--bg-tint); font-weight: 700; color: var(--ink); }
.compare-table td { color: var(--ink-2); }
.compare-table .c-us { text-align: center; font-weight: 700; color: var(--emerald-deep); background: rgba(16,185,129,.06); }
.compare-table th.c-us { color: var(--blue-deep); background: rgba(37,99,235,.08); }
.compare-table .c-them { text-align: center; color: var(--muted); }
.compare-table tbody tr:last-child td { border-bottom: 0; }

@media (max-width: 820px) { .why-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   IN-QUIZ DISPLAY-LANGUAGE TOGGLE (中 / EN / 中英)
   ========================================================================== */
.t-zh, .t-en { display: block; }
[data-disp="zh"] .t-en { display: none; }
[data-disp="en"] .t-zh { display: none; }
[data-disp="both"] .t-en { color: var(--muted); font-size: .95em; margin-top: 3px; }
/* keep the answer-key letter etc. unaffected — only .t-zh/.t-en are toggled */

.quiz-bar { flex-wrap: wrap; }
.quiz-disp { display: inline-flex; border: 1px solid var(--line); border-radius: var(--r-pill); overflow: hidden; background: var(--paper); }
.quiz-disp-btn { padding: 6px 12px; font-size: .82rem; font-weight: 600; color: var(--muted); background: transparent; border: 0; cursor: pointer; line-height: 1.4; }
.quiz-disp-btn + .quiz-disp-btn { border-left: 1px solid var(--line); }
.quiz-disp-btn.is-active { background: var(--blue); color: #fff; }
[data-theme="dark"] .quiz-disp { background: var(--paper); }

/* ==========================================================================
   PAYMENTS — Free vs Paid table, paywall banners, checkout success
   ========================================================================== */
.plan-compare { max-width: 640px; margin: 0 auto; }
.pc-table { width: 100%; border-collapse: collapse; background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; }
.pc-table th, .pc-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); font-size: .95rem; }
.pc-table thead th { background: var(--bg-tint); font-weight: 700; color: var(--ink); text-align: center; }
.pc-table thead th:first-child { text-align: left; }
.pc-table td:not(:first-child), .pc-table th:not(:first-child) { text-align: center; width: 28%; }
.pc-table td { color: var(--ink-2); }
.pc-paid-col { background: rgba(37,99,235,.06); }
.pc-table thead th.pc-paid-col { background: rgba(37,99,235,.12); color: var(--blue-deep); }
.pc-tick { color: var(--muted-2); font-weight: 700; }
.pc-tick.paid { color: var(--emerald-deep); }
.pc-cross { color: var(--danger-soft); }
.pc-text { font-size: .85rem; }
.pc-table tbody tr:last-child td { border-bottom: 0; }
.pc-buy { text-align: center; margin-top: 22px; }
.pc-price { font-size: 1.5rem; margin-bottom: 12px; }
.pc-price strong { color: var(--ink); }
.pc-note { font-size: .82rem; margin-top: 10px; }

/* Free-preview / paywall banner inside the quiz runtime */
.preview-banner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  background: rgba(245,158,11,.12); border: 1px solid rgba(245,158,11,.4);
  border-radius: var(--r-md); padding: 12px 16px; margin-bottom: 16px;
}
.preview-banner-tag { font-weight: 600; color: #b45309; }
[data-theme="dark"] .preview-banner-tag { color: #fbbf24; }
/* Banked-wrong conversion hook — positive (emerald) variant of the preview banner. */
.preview-banner.banked-wrong { background: rgba(16,185,129,.12); border-color: rgba(16,185,129,.4); }
.preview-banner.banked-wrong .preview-banner-tag { color: var(--emerald-deep); }
[data-theme="dark"] .preview-banner.banked-wrong .preview-banner-tag { color: #34d399; }
/* "Free preview" tag on a dashboard recent-attempt row (its review is locked). */
.tag-preview { display: inline-block; margin-left: 8px; padding: 1px 8px; border-radius: var(--r-pill); font-size: .72rem; font-weight: 700; background: rgba(245,158,11,.14); color: #b45309; vertical-align: middle; }
[data-theme="dark"] .tag-preview { color: #fbbf24; }

/* Locked explanation (free users) */
.q-expl-lock {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 12px;
  background: var(--bg-tint); border: 1px dashed var(--line); border-radius: var(--r-md); padding: 12px 14px;
}
.q-expl-lock-txt { color: var(--muted); font-weight: 600; font-size: .9rem; }
.q-expl-lock-btn { margin-left: auto; background: var(--blue); color: #fff; font-weight: 600; font-size: .82rem; padding: 6px 14px; border-radius: var(--r-pill); }

/* Checkout success */
.checkout-ok { padding: 32px 0; }
.checkout-ok-mark { width: 72px; height: 72px; margin: 0 auto 18px; border-radius: 50%; background: rgba(16,185,129,.14); color: var(--emerald-deep); font-size: 2.2rem; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.exam-hero-cta.center { justify-content: center; display: flex; gap: 12px; flex-wrap: wrap; }

.q-feedback.is-locked { background: rgba(245,158,11,.08); border: 1px solid rgba(245,158,11,.35); }
.q-feedback.is-locked .q-feedback-result { color: #b45309; }
[data-theme="dark"] .q-feedback.is-locked .q-feedback-result { color: #fbbf24; }

/* ===== Admin: members & memberships ===== */
.mb-badge{display:inline-block;padding:.15rem .55rem;border-radius:999px;font-size:.78rem;font-weight:600;line-height:1.5;white-space:nowrap}
.mb-free{background:#eef1f5;color:#5b6472}
.mb-paid{background:#e6f4ec;color:#1d7a46}
.mb-all{background:#eae6fb;color:#5a3ec8}
.mb-exp{background:#fbeaea;color:#b13b3b}
.mb-actions{display:flex;flex-wrap:wrap;gap:.35rem;align-items:center}
.mb-inline{display:inline-flex;align-items:center;gap:.25rem;margin:0}
.mb-days{width:4.5rem;padding:.25rem .4rem;font-size:.82rem}
.mb-danger{color:#b13b3b}
.mb-danger:hover{background:#fbeaea}
.admin-pager{display:flex;gap:1rem;align-items:center;justify-content:center;margin:1.25rem 0}
.small{font-size:.85rem}

/* ===== Admin: Stripe setup guide ===== */
.sg-status{display:flex;flex-direction:column;gap:.2rem;padding:1rem 1.25rem;border-radius:12px;background:#fff7e6;border:1px solid #f0d59a;margin:1rem 0}
.sg-status.is-ready{background:#e9f7ef;border-color:#a9dcc0}
.sg-status strong{font-size:1.05rem}
.sg-checklist{list-style:none;margin:0 0 1.5rem;padding:.5rem .75rem}
.sg-check{display:flex;align-items:center;gap:.6rem;padding:.55rem .25rem;border-bottom:1px solid #eef1f5;font-size:.95rem}
.sg-check:last-child{border-bottom:none}
.sg-tick{display:inline-flex;align-items:center;justify-content:center;width:1.5rem;height:1.5rem;border-radius:50%;background:#eef1f5;color:#8a93a2;font-weight:700;font-size:.8rem}
.sg-check.is-ok .sg-tick{background:#1d7a46;color:#fff}
.sg-state{margin-left:auto;font-size:.78rem;color:#8a93a2}
.sg-check.is-ok .sg-state{color:#1d7a46}
.sg-copy{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;margin:.5rem 0}
.sg-copy code{background:#0f1726;color:#d6e2ff;padding:.5rem .75rem;border-radius:8px;font-size:.9rem;word-break:break-all}
.sg-steps{list-style:none;counter-reset:none;margin:0;padding:0;display:grid;gap:1rem}
.sg-step{padding:1.1rem 1.25rem}
.sg-step h3{margin:0 0 .4rem;font-size:1.02rem}
.sg-step p{margin:0;color:#3a4250;line-height:1.6}
.sg-step code{background:#eef1f5;padding:.05rem .35rem;border-radius:5px;font-size:.86em}

/* ===== Per-paper duration buy tiers (PlanCompare) ===== */
.pc-tiers{margin-top:1.5rem}
.pc-tiers-head{font-weight:600;text-align:center;margin:.25rem 0 1rem}
.pc-tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.9rem}
.pc-tier{position:relative;display:flex;flex-direction:column;align-items:center;gap:.25rem;margin:0;padding:1.2rem .9rem;border:1px solid #e5e9f0;border-radius:14px;background:#fff;text-align:center}
.pc-tier.is-best{border-color:var(--accent,#4f46e5);box-shadow:0 8px 24px rgba(79,70,229,.14)}
.pc-tier-badge{position:absolute;top:-.7rem;left:50%;transform:translateX(-50%);background:var(--accent,#4f46e5);color:#fff;font-size:.7rem;font-weight:700;padding:.15rem .65rem;border-radius:999px;white-space:nowrap}
.pc-tier-days{font-weight:700;font-size:1.05rem}
.pc-tier-price{font-size:1.7rem;font-weight:800;color:var(--accent,#4f46e5);line-height:1.1}
.pc-tier-sub{font-size:.8rem}
.pc-tier-until{font-size:.78rem}
.pc-tier .btn{margin-top:.6rem;width:100%}
.price-until{font-size:.8rem;margin-top:-.35rem}
@media (max-width:640px){.pc-tier-grid{grid-template-columns:1fr}}

/* ===== Paper hero: text + interactive trial card ===== */
.paper-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:2.25rem;align-items:start}
.paper-hero-main{min-width:0}
.paper-hero-trial{position:sticky;top:1rem}
.trial-card{background:#fff;border-radius:18px;padding:1.3rem 1.25rem;box-shadow:0 16px 48px rgba(8,15,40,.18);color:#0f1726}
.trial-head{display:flex;justify-content:space-between;align-items:center;gap:.5rem;margin-bottom:.7rem}
.trial-tag{background:var(--accent,#4f46e5);color:#fff;font-weight:700;font-size:.74rem;padding:.22rem .65rem;border-radius:999px;white-space:nowrap}
.trial-qid{font-size:.76rem;color:#8a93a2}
.trial-q{font-weight:600;margin:.1rem 0 .9rem;line-height:1.55;font-size:1.02rem}
.trial-opts{display:flex;flex-direction:column;gap:.5rem}
.trial-opt{display:flex;align-items:center;gap:.65rem;text-align:left;width:100%;padding:.62rem .75rem;border:1px solid #e5e9f0;border-radius:11px;background:#fff;cursor:pointer;font:inherit;color:inherit;transition:border-color .15s,background .15s}
.trial-opt:hover:not(:disabled){border-color:var(--accent,#4f46e5);background:#f7f8fc}
.trial-opt:disabled{cursor:default}
.trial-opt-key{display:inline-flex;align-items:center;justify-content:center;width:1.65rem;height:1.65rem;border-radius:50%;background:#eef1f5;font-weight:700;font-size:.82rem;flex:none}
.trial-opt.is-correct{border-color:#1d7a46;background:#e9f7ef}
.trial-opt.is-correct .trial-opt-key{background:#1d7a46;color:#fff}
.trial-opt.is-wrong{border-color:#b13b3b;background:#fbeaea}
.trial-opt.is-wrong .trial-opt-key{background:#b13b3b;color:#fff}
.trial-feedback{margin:.85rem 0 0;padding:.8rem .9rem;border-radius:11px;background:#f5f7fb}
.trial-feedback.ok{background:#e9f7ef}
.trial-feedback.bad{background:#fff7e6}
.trial-verdict{display:block;margin-bottom:.25rem}
.trial-answer{margin:.15rem 0 0;font-size:.9rem}
.trial-expl{margin:.4rem 0 0;font-size:.88rem;color:#3a4250;line-height:1.55}
.trial-card .btn{margin-top:.9rem}
@media (max-width:880px){.paper-hero-grid{grid-template-columns:1fr;gap:1.5rem}.paper-hero-trial{position:static}}

/* ===== Footer regulator strip (text wordmarks + non-affiliation slider) ===== */
.reg-strip{border-top:1px solid var(--line);padding:1.6rem 0 .25rem}
.reg-strip-label{text-align:center;font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 1rem}
.reg-marquee{overflow:hidden;position:relative;-webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.reg-track{display:flex;gap:1rem;width:max-content;animation:reg-scroll 38s linear infinite}
.reg-marquee:hover .reg-track{animation-play-state:paused}
.reg-chip{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.2rem;min-width:10rem;padding:.75rem 1.15rem;border:1px solid var(--line);border-radius:12px;background:var(--paper)}
.reg-abbr{font-weight:800;font-size:1.05rem;letter-spacing:.02em;color:var(--ink)}
.reg-name{font-size:.72rem;line-height:1.3;text-align:center;color:var(--muted)}
.reg-disclaimer{max-width:62rem;margin:1.2rem auto 0;text-align:center;font-size:.76rem;line-height:1.65;color:var(--muted)}
@keyframes reg-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){
  .reg-track{animation:none;flex-wrap:wrap;justify-content:center;width:auto}
  .reg-marquee{-webkit-mask-image:none;mask-image:none}
}

/* ===== Legal / Terms page ===== */
.legal-doc{max-width:50rem}
.legal-clause{margin:1.6rem 0}
.legal-clause h2{font-size:1.05rem;margin:0 0 .5rem;color:var(--ink)}
.legal-clause p{margin:0 0 .7rem;color:var(--ink-2);line-height:1.7;font-size:.95rem}
.legal-note{margin-top:2rem;font-size:.82rem;font-style:italic}
.reg-terms-link{color:var(--blue);text-decoration:underline;white-space:nowrap}

/* ===== "Built for candidates across…" industry slider ===== */
.trusted-marquee{overflow:hidden;position:relative;margin-top:.5rem;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.trusted-track{display:flex;gap:1rem;width:max-content;animation:trusted-scroll 30s linear infinite}
.trusted-track .trusted-item{flex:none}
.trusted-marquee:hover .trusted-track{animation-play-state:paused}
@keyframes trusted-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){
  .trusted-track{animation:none;flex-wrap:wrap;justify-content:center;width:auto}
  .trusted-marquee{-webkit-mask-image:none;mask-image:none}
}

/* ===== Brand logo (graduation cap + question-bank database) ===== */
.brand-logo{width:42px;height:42px;flex:none;color:var(--ink);display:block}
.brand-footer .brand-logo{width:34px;height:34px}
@media (max-width:640px){.brand-logo{width:36px;height:36px}}

/* ===== Trusted-by partner logos ===== */
.partner-track{gap:3.25rem;align-items:center}
.partner{display:inline-flex;align-items:center;justify-content:center}
.partner-logo{height:44px;width:auto;max-width:150px;object-fit:contain;opacity:.78;filter:grayscale(1);transition:opacity .2s ease,filter .2s ease}
.partner-logo:hover{opacity:1;filter:grayscale(0)}
.partner-name{align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;letter-spacing:.01em;color:var(--muted);white-space:nowrap}
@media (max-width:640px){.partner-logo{height:34px}.partner-track{gap:2.25rem}}

/* ===== Dashboard: my membership / renewal ===== */
.mem-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-bottom:8px}
.mem-card{padding:18px 20px;border-left:4px solid var(--line)}
.mem-card.is-ok{border-left-color:var(--success)}
.mem-card.is-soon{border-left-color:var(--warm)}
.mem-card.is-expired{border-left-color:var(--danger)}
.mem-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}
.mem-badge{font-size:.74rem;font-weight:700;padding:.15rem .55rem;border-radius:var(--r-pill);background:var(--bg-tint);color:var(--muted);white-space:nowrap}
.mem-card.is-ok .mem-badge{background:rgba(16,185,129,.14);color:var(--emerald-deep)}
.mem-card.is-soon .mem-badge{background:rgba(245,158,11,.16);color:#b45309}
.mem-card.is-expired .mem-badge{background:rgba(225,29,72,.12);color:var(--danger)}
.mem-meta{font-size:.9rem;color:var(--ink-2);margin:0 0 12px}

/* ===== Home: free vs paid emphasis (免費任做) ===== */
.freepaid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:840px;margin:0 auto}
.fp-card{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 26px;box-shadow:var(--sh-sm)}
.fp-card h3{margin:0 0 4px;font-size:1.2rem}
.fp-price{font-size:1.5rem;font-weight:800;margin:0 0 14px;color:var(--ink)}
.fp-card ul{list-style:none;margin:0 0 18px;padding:0;display:flex;flex-direction:column;gap:10px}
.fp-card li{position:relative;padding-left:26px;color:var(--ink-2);line-height:1.45}
.fp-card li::before{content:"✓";position:absolute;left:0;top:0;font-weight:800}
.fp-free{border-top:4px solid var(--success)}
.fp-free li::before{color:var(--success)}
.fp-paid{border-top:4px solid var(--blue)}
.fp-paid li::before{color:var(--blue)}
.fp-tag{position:absolute;top:-12px;right:18px;background:var(--blue);color:#fff;font-size:.74rem;font-weight:700;padding:.2rem .7rem;border-radius:var(--r-pill)}
@media (max-width:720px){.freepaid{grid-template-columns:1fr;max-width:440px}}

/* ===== WhatsApp CTAs + payment-method note ===== */
.wa-fab{position:fixed;right:18px;bottom:18px;z-index:60;display:inline-flex;align-items:center;gap:8px;background:#25D366;color:#fff;padding:12px 16px;border-radius:999px;box-shadow:0 10px 28px rgba(0,0,0,.20);font-weight:700;font-size:.92rem}
.wa-fab svg{width:24px;height:24px;flex:none}
.wa-fab:hover{background:#1ebe5d;color:#fff}
.wa-fab-txt{white-space:nowrap}
@media (max-width:560px){.wa-fab .wa-fab-txt{display:none}.wa-fab{padding:14px;border-radius:50%}}
.wa-btn{display:inline-flex;align-items:center;gap:8px;background:#25D366;color:#fff;font-weight:700;padding:10px 20px;border-radius:999px;font-size:.92rem}
.wa-btn:hover{background:#1ebe5d;color:#fff}
.pc-pay{font-size:.82rem;color:var(--ink-2);text-align:center;margin:.85rem auto .25rem;line-height:1.55;max-width:560px}
.pay-methods{max-width:640px;margin-left:auto;margin-right:auto;line-height:1.55}
.auth-note{font-size:.82rem;line-height:1.5;margin:-.25rem 0 .5rem}

/* ===== Auth password hint ===== */
.auth-hint{font-size:.8rem;line-height:1.45;margin:-.3rem 0 .35rem;color:var(--muted)}

/* ===== Background brand watermark (subtle, tiled, theme-aware) ===== */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-repeat:repeat;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='360' height='220'%3E%3Ctext x='8' y='120' font-family='Manrope,Arial,sans-serif' font-size='22' font-weight='700' fill='%230b1324' fill-opacity='0.04' transform='rotate(-24 180 110)'%3EEasyExamQuestionBank.com%3C/text%3E%3C/svg%3E");
}
[data-theme="dark"] body::before{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='360' height='220'%3E%3Ctext x='8' y='120' font-family='Manrope,Arial,sans-serif' font-size='22' font-weight='700' fill='%23ffffff' fill-opacity='0.05' transform='rotate(-24 180 110)'%3EEasyExamQuestionBank.com%3C/text%3E%3C/svg%3E");
}

/* ===== Pricing grid w/ free card (free + 3 paid tiers) ===== */
.price-grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.price-card.is-free{border-top:4px solid var(--success)}
.price-badge-free{background:var(--success)!important}

/* ===== Calendar date chip on paper pricing tiers ===== */
.cal-until{font-size:.74rem;color:var(--muted);margin-top:.3rem}
.cal-chip{display:inline-flex;flex-direction:column;align-items:center;width:66px;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--paper);margin:.2rem auto .15rem;box-shadow:var(--sh-sm)}
.cal-chip-m{width:100%;background:var(--blue);color:#fff;font-size:.66rem;font-weight:800;letter-spacing:.06em;padding:2px 0;text-align:center}
.cal-chip-d{font-size:1.5rem;font-weight:800;line-height:1.15;color:var(--ink);padding-top:2px}
.cal-chip-y{font-size:.66rem;color:var(--muted);padding-bottom:3px}

/* ===== Admin "live now" progress bar ===== */
.live-bar{display:block;height:7px;border-radius:99px;background:var(--line);overflow:hidden;max-width:170px;margin-bottom:3px}
.live-bar span{display:block;height:100%;background:var(--grad);border-radius:99px}

/* ===== Paper pricing: free card alongside paid tiers (4-up) ===== */
.pc-tier-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.pc-tier-free{border-style:dashed}
.pc-free-badge{background:var(--success)!important}
@media (max-width:520px){.pc-tier-grid{grid-template-columns:1fr 1fr}}

/* ===== Admin: clickable reported question ===== */
.admin-qlink{color:inherit;text-decoration:none;display:inline-block}
.admin-qlink:hover strong{color:var(--blue);text-decoration:underline}

/* ===== Admin guide cards ===== */
.guide-card{margin-bottom:14px}
.guide-card h2{font-size:1.05rem;margin:0 0 .5rem}
.guide-card p{margin:0 0 .55rem;line-height:1.65;font-size:.92rem}