/* ============================================================
   new-landing.css
   Standalone stylesheet for frontend/pages/new_landing.html.
   All classes prefixed with .nl- to avoid collisions with the
   existing landing page styles.

   Layer order:
     1. Tokens (CSS custom properties)
     2. Reset / base
     3. Layout primitives (container, grid)
     4. Background (gradient, animated grid, floating orbs)
     5. Nav
     6. Buttons
     7. Reusable card primitives (glass, feature, path, stat)
     8. Sections (hero, tutor preview, features, paths,
        lifestyle, tutor pipeline, workflow, quote, pricing,
        cta, footer)
     9. Keyframes
    10. Responsive (768px, 1024px)
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root {
  --nl-bg: #031323;
  --nl-bg-deep: #020617;
  --nl-bg-mid: #082f49;
  --nl-bg-soft: #075985;
  --nl-slate-950: #020617;
  --nl-slate-900: #0f172a;
  --nl-slate-800: #1e293b;
  --nl-slate-400: #94a3b8;
  --nl-slate-300: #cbd5e1;
  --nl-slate-200: #e2e8f0;

  --nl-sky-100: #e0f2fe;
  --nl-sky-200: #bae6fd;
  --nl-sky-300: #7dd3fc;
  --nl-sky-400: #38bdf8;
  --nl-sky-500: #0ea5e9;
  --nl-sky-600: #0284c7;

  --nl-emerald-200: #a7f3d0;
  --nl-emerald-300: #6ee7b7;

  --nl-white-04: rgba(255, 255, 255, 0.04);
  --nl-white-05: rgba(255, 255, 255, 0.05);
  --nl-white-06: rgba(255, 255, 255, 0.06);
  --nl-white-07: rgba(255, 255, 255, 0.07);
  --nl-white-08: rgba(255, 255, 255, 0.08);
  --nl-white-09: rgba(255, 255, 255, 0.09);
  --nl-white-10: rgba(255, 255, 255, 0.10);
  --nl-white-12: rgba(255, 255, 255, 0.12);
  --nl-white-15: rgba(255, 255, 255, 0.15);
  --nl-white-20: rgba(255, 255, 255, 0.20);

  --nl-radius-sm: 0.75rem;
  --nl-radius-md: 1rem;
  --nl-radius-lg: 1.5rem;
  --nl-radius-xl: 1.7rem;
  --nl-radius-2xl: 2rem;
  --nl-radius-3xl: 2.5rem;

  --nl-shadow-sky: 0 0 35px rgba(56, 189, 248, 0.35);
  --nl-shadow-sky-soft: 0 0 55px rgba(56, 189, 248, 0.18);
  --nl-shadow-card: 0 25px 50px -12px rgba(2, 6, 23, 0.45);

  --nl-font-body: var(--font-main);
  --nl-font-display: var(--font-main);

  --nl-tracking-eyebrow: 0.3em;
}

/* ---------- 2. Reset / base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.nl-body {
  margin: 0;
  font-family: var(--nl-font-body);
  font-weight: 400;
  color: #ffffff;
  background-color: var(--nl-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* CRITICAL: theme.css has a global `body { overflow: hidden; height: 100vh }`
     intended for the in-app dashboard shell. When the landing loads, the body
     gets both `night` and `nl-body` classes, so that rule applies too and
     kills wheel scrolling (anchor jumps still work because scrollIntoView
     forces a scroll). Setting `min-height` alone is NOT enough — the
     inherited `height: 100vh` still wins. Override both axes explicitly:
     the page must grow to its content height and scroll vertically. */
  height: auto;
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  position: relative;
}

body.nl-body ::selection {
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
}

.nl-main {
  position: relative;
  min-height: 100vh;
  /* Clip horizontal overflow from off-screen floating orbs WITHOUT becoming
     a scroll container. `overflow-x: hidden` would make .nl-main a scroll
     container with computed overflow-y: auto (per CSS spec, when one axis
     is hidden the other is promoted to auto). Since .nl-main has no fixed
     height (just min-height: 100vh, it grows to its content), the implicit
     vertical scroll range is zero — wheel events would hit this dead
     scroll container and stop bubbling, leaving the page un-scrollable
     even though programmatic anchor scrolls still worked.
     `overflow-x: clip` clips visually but does NOT create a scroll
     container, so wheel events bubble normally to the document. */
  overflow-x: clip;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: 0;
  background: transparent;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--nl-font-display);
  font-weight: 400; /* Fredoka One is single-weight */
  letter-spacing: -0.02em;
  margin: 0;
}

p {
  margin: 0;
}

img, svg {
  display: inline-block;
  vertical-align: middle;
}

.nl-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 3. Layout primitives ---------- */
.nl-container {
  width: 100%;
  max-width: 80rem; /* 1280px */
  margin: 0 auto;
  padding: 0 1.25rem;
}

.nl-section {
  position: relative;
  padding: 6rem 1.25rem;
}

.nl-eyebrow {
  display: block;
  margin-bottom: 0.75rem;
  font-family: var(--nl-font-body);
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: var(--nl-tracking-eyebrow);
  text-transform: uppercase;
  color: rgba(186, 230, 253, 0.8);
}

.nl-h2 {
  font-size: 2.25rem;
  line-height: 1.05;
  color: #fff;
}

.nl-lead {
  margin-top: 1.25rem;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--nl-slate-300);
  max-width: 60ch;
}

/* ---------- 4. Background ---------- */
.nl-bg-gradient {
  position: fixed;
  inset: 0;
  z-index: -10;
  /* Other decor layers (.nl-grid-bg, .nl-orb-*) disable pointer-events; this
     one was missed. A fixed full-viewport element without pointer-events
     disabled can intercept wheel events in some stacking contexts. */
  pointer-events: none;
  background:
    radial-gradient(circle at top left, var(--nl-bg-soft) 0, transparent 34%),
    radial-gradient(circle at 80% 10%, var(--nl-sky-600) 0, transparent 28%),
    linear-gradient(135deg, var(--nl-bg-deep) 0%, var(--nl-bg-mid) 55%, var(--nl-bg) 100%);
}

.nl-grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.6;
  z-index: 0;
}

.nl-grid-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(circle at center, black, transparent 72%);
          mask-image: radial-gradient(circle at center, black, transparent 72%);
}

.nl-orb {
  position: absolute;
  border-radius: 9999px;
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
  animation: nl-float 7s ease-in-out infinite;
  will-change: transform;
}

.nl-orb--1 {
  left: -8rem;
  top: 5rem;
  width: 18rem;
  height: 18rem;
  background: rgba(56, 189, 248, 0.25);
  animation-delay: 0s;
}

.nl-orb--2 {
  right: -9rem;
  top: 20rem;
  width: 24rem;
  height: 24rem;
  background: rgba(59, 130, 246, 0.20);
  animation-delay: 1.1s;
}

.nl-orb--3 {
  bottom: 10rem;
  left: 33%;
  width: 20rem;
  height: 20rem;
  background: rgba(103, 232, 249, 0.10);
  animation-delay: 2.2s;
}

/* ---------- 5. Nav ---------- */
.nl-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  border-bottom: 1px solid var(--nl-white-10);
  background: rgba(2, 6, 23, 0.35);
  -webkit-backdrop-filter: blur(40px);
          backdrop-filter: blur(40px);
}

.nl-nav__inner {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  gap: 1rem;
}

.nl-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.nl-logo__mark {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 1rem;
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
  box-shadow: 0 10px 30px rgba(14, 165, 233, 0.30);
}

.nl-logo__pulse {
  position: absolute;
  top: -0.25rem;
  right: -0.25rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--nl-emerald-300);
  box-shadow: 0 0 0 4px var(--nl-slate-950);
}

.nl-logo__name {
  font-family: var(--nl-font-display);
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  color: #fff;
  line-height: 1;
}

.nl-logo__tag {
  display: block;
  margin-top: 2px;
  font-size: 0.75rem;
  color: rgba(224, 242, 254, 0.7);
}

.nl-nav__links {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

.nl-nav__link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--nl-slate-300);
  transition: background-color 0.2s, color 0.2s;
}

.nl-nav__link:hover {
  background: var(--nl-white-10);
  color: #fff;
}

.nl-nav__cta {
  display: none;
  align-items: center;
  gap: 0.75rem;
}

.nl-nav__menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 1rem;
  background: var(--nl-white-10);
  color: #fff;
}

/* ---------- 6. Buttons ---------- */
.nl-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 1rem;
  font-family: var(--nl-font-body);
  font-size: 0.875rem;
  font-weight: 800;
  line-height: 1;
  border: 1px solid transparent;
  transition: background-color 0.3s, color 0.3s, transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  text-decoration: none;
  white-space: nowrap;
}

.nl-btn--primary {
  background: var(--nl-sky-400);
  color: var(--nl-slate-950);
  box-shadow: var(--nl-shadow-sky);
}

.nl-btn--primary:hover {
  background: var(--nl-sky-300);
}

.nl-btn--secondary {
  background: var(--nl-white-10);
  color: #fff;
  border-color: var(--nl-white-15);
  -webkit-backdrop-filter: blur(20px);
          backdrop-filter: blur(20px);
}

.nl-btn--secondary:hover {
  background: var(--nl-white-15);
}

.nl-btn--ghost {
  color: var(--nl-sky-100);
  background: transparent;
}

.nl-btn--ghost:hover {
  background: var(--nl-white-10);
  color: #fff;
}

.nl-btn--dark {
  background: var(--nl-slate-950);
  color: #fff;
}

.nl-btn--dark:hover {
  background: var(--nl-slate-900);
}

.nl-btn--block {
  width: 100%;
}

/* ---------- 7. Card primitives ---------- */
.nl-glass {
  position: relative;
  border-radius: var(--nl-radius-2xl);
  border: 1px solid var(--nl-white-12);
  background: var(--nl-white-07);
  -webkit-backdrop-filter: blur(40px);
          backdrop-filter: blur(40px);
  box-shadow: 0 25px 50px -12px rgba(2, 47, 73, 0.25);
}

.nl-card {
  position: relative;
  border-radius: var(--nl-radius-xl);
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-06);
  padding: 1.5rem;
  -webkit-backdrop-filter: blur(20px);
          backdrop-filter: blur(20px);
  overflow: hidden;
  transition: transform 0.3s, background-color 0.3s, border-color 0.3s;
}

.nl-card:hover {
  transform: translateY(-4px);
  border-color: rgba(125, 211, 252, 0.35);
  background: rgba(255, 255, 255, 0.09);
}

.nl-card__glow {
  position: absolute;
  right: -2.5rem;
  top: -2.5rem;
  width: 7rem;
  height: 7rem;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.10);
  filter: blur(40px);
  transition: background-color 0.3s;
  pointer-events: none;
}

.nl-card:hover .nl-card__glow {
  background: rgba(125, 211, 252, 0.20);
}

.nl-icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1.25rem;
  border-radius: 1rem;
  background: rgba(125, 211, 252, 0.15);
  color: var(--nl-sky-200);
  box-shadow: inset 0 0 0 1px rgba(186, 230, 253, 0.15);
}

.nl-card__title {
  margin-bottom: 0.5rem;
  font-family: var(--nl-font-display);
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  color: #fff;
}

.nl-card__kicker {
  display: inline-flex;
  width: max-content;
  max-width: 100%;
  margin-bottom: 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(125, 211, 252, 0.22);
  background: rgba(14, 165, 233, 0.10);
  padding: 0.28rem 0.65rem;
  color: var(--nl-sky-200);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.2;
}

.nl-card__title a {
  color: inherit;
  text-decoration: none;
}

.nl-card__title a:hover {
  color: var(--nl-sky-200);
}

.nl-card__text {
  line-height: 1.75;
  color: var(--nl-slate-300);
  font-size: 0.95rem;
}

/* Stat cards */
.nl-stat {
  border-radius: 1.5rem;
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-05);
  padding: 1.25rem;
  -webkit-backdrop-filter: blur(20px);
          backdrop-filter: blur(20px);
}

.nl-stat__value {
  font-family: var(--nl-font-display);
  font-size: 1.875rem;
  color: #fff;
  letter-spacing: -0.02em;
}

.nl-stat__label {
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: var(--nl-slate-300);
}

/* ---------- 8. Sections ---------- */

/* Hero */
.nl-hero {
  position: relative;
  padding: 8rem 1.25rem 5rem;
}

.nl-hero__halo {
  position: absolute;
  left: 50%;
  top: 9rem;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  background: rgba(125, 211, 252, 0.20);
  filter: blur(70px);
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
}

.nl-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 80rem;
  margin: 0 auto;
}

.nl-hero__head {
  max-width: 56rem;
  margin: 0 auto;
  text-align: center;
}

.nl-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  border: 1px solid rgba(186, 230, 253, 0.20);
  background: rgba(125, 211, 252, 0.10);
  -webkit-backdrop-filter: blur(20px);
          backdrop-filter: blur(20px);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--nl-sky-100);
  margin-bottom: 1.5rem;
}

.nl-hero__title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
  color: #fff;
}

.nl-hero__subtitle {
  max-width: 42rem;
  margin: 1.75rem auto 0;
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--nl-slate-300);
}

.nl-hero__ctas {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2.25rem;
}

.nl-hero__trial {
  margin: 0.95rem auto 0;
  color: var(--nl-sky-100);
  font-size: 0.95rem;
  font-weight: 800;
}

.nl-hero__trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
  max-width: 56rem;
  margin: 1.15rem auto 0;
}

.nl-hero__trust span {
  display: inline-flex;
  align-items: center;
  min-height: 2.25rem;
  border: 1px solid rgba(186, 230, 253, 0.17);
  border-radius: 999px;
  background: rgba(2, 6, 23, 0.34);
  color: rgba(224, 242, 254, 0.82);
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 800;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nl-hero__preview {
  margin-top: 4rem;
}

.nl-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
}

/* TutorPreview */
.nl-tutor-preview {
  position: relative;
  margin: 0 auto;
  max-width: 64rem;
  padding: 1rem;
  overflow: hidden;
}

.nl-tutor-preview__glow-a,
.nl-tutor-preview__glow-b {
  position: absolute;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
}

.nl-tutor-preview__glow-a {
  right: -5rem;
  top: 2.5rem;
  background: rgba(56, 189, 248, 0.20);
}

.nl-tutor-preview__glow-b {
  bottom: -5rem;
  left: 5rem;
  background: rgba(37, 99, 235, 0.20);
}

.nl-tutor-preview__grid {
  position: relative;
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

.nl-tp-panel {
  border-radius: 1.5rem;
  border: 1px solid var(--nl-white-10);
  background: rgba(2, 6, 23, 0.55);
  padding: 1rem;
}

.nl-tp-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: 1rem;
}

.nl-tp-panel__eyebrow {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: var(--nl-tracking-eyebrow);
  color: rgba(186, 230, 253, 0.7);
}

.nl-tp-panel__title {
  margin-top: 0.25rem;
  font-family: var(--nl-font-display);
  font-size: 1.25rem;
  color: #fff;
}

.nl-tp-badge--synced {
  border-radius: 9999px;
  background: rgba(52, 211, 153, 0.15);
  color: var(--nl-emerald-200);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  box-shadow: inset 0 0 0 1px rgba(110, 231, 183, 0.20);
}

.nl-tp-tabs {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.nl-tp-tab {
  width: 100%;
  text-align: left;
  border-radius: 1rem;
  padding: 1rem;
  background: var(--nl-white-04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: background-color 0.2s, border-color 0.2s, transform 0.2s;
}

.nl-tp-tab:hover {
  background: var(--nl-white-07);
  transform: translateX(4px);
}

.nl-tp-tab.is-active {
  border-color: rgba(125, 211, 252, 0.40);
  background: rgba(125, 211, 252, 0.12);
}

.nl-tp-tab__row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nl-tp-tab__icon {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.08);
  color: var(--nl-sky-200);
}

.nl-tp-tab__title {
  font-weight: 800;
  color: #fff;
}

.nl-tp-tab__sub {
  display: block;
  font-size: 0.875rem;
  color: var(--nl-slate-400);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nl-tp-retrieve {
  margin-top: 1rem;
  border-radius: 1rem;
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-04);
  padding: 1rem;
}

.nl-tp-retrieve__head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--nl-sky-100);
}

.nl-tp-bar {
  height: 0.5rem;
  border-radius: 9999px;
  background: var(--nl-white-10);
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.nl-tp-bar__fill {
  display: block;
  height: 100%;
  border-radius: 9999px;
  background: var(--nl-sky-300);
}

.nl-tp-chat {
  border-radius: 1.5rem;
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-06);
  padding: 1rem;
}

.nl-tp-chat__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.nl-tp-chat__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nl-tp-chat__avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 1rem;
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
  box-shadow: 0 10px 25px rgba(14, 165, 233, 0.30);
}

.nl-tp-chat__name {
  font-family: var(--nl-font-display);
  color: #fff;
}

.nl-tp-chat__mode {
  font-size: 0.875rem;
  color: var(--nl-slate-400);
}

.nl-tp-chat__sparkle {
  color: var(--nl-sky-200);
}

.nl-tp-bubble--user {
  margin-left: auto;
  max-width: 82%;
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
  border-radius: 1.5rem;
  border-top-right-radius: 0.5rem;
  padding: 1rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.nl-tp-bubble--ai {
  max-width: 92%;
  border-radius: 1.5rem;
  border-top-left-radius: 0.5rem;
  border: 1px solid var(--nl-white-10);
  background: rgba(2, 6, 23, 0.65);
  color: var(--nl-slate-200);
  padding: 1rem 1.25rem;
  font-size: 0.875rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.nl-tp-formula {
  margin: 1rem 0;
  border-radius: 1rem;
  border: 1px solid rgba(186, 230, 253, 0.15);
  background: rgba(125, 211, 252, 0.10);
  color: var(--nl-sky-100);
  padding: 1rem;
  font-family: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95rem;
}

.nl-tp-citations {
  display: grid;
  gap: 0.5rem;
  font-size: 0.75rem;
  grid-template-columns: 1fr;
}

.nl-tp-citation {
  border-radius: 9999px;
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-05);
  padding: 0.5rem 0.75rem;
  color: var(--nl-slate-300);
}

.nl-tp-mini {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  padding-top: 0.25rem;
}

.nl-tp-mini__cell {
  border-radius: 1rem;
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-04);
  padding: 0.75rem;
  text-align: center;
}

.nl-tp-mini__val {
  font-family: var(--nl-font-display);
  font-size: 1.125rem;
  color: #fff;
}

.nl-tp-mini__label {
  font-size: 0.75rem;
  color: var(--nl-slate-400);
  margin-top: 0.25rem;
}

/* Features */
.nl-study-flow {
  padding-top: 5.5rem;
}

.nl-study-flow__head {
  max-width: 54rem;
  margin: 0 auto 2.25rem;
  text-align: center;
}

.nl-study-flow__title {
  font-size: clamp(2.15rem, 4vw, 3.65rem);
  line-height: 1.05;
  color: #fff;
}

.nl-study-flow__lead {
  max-width: 48rem;
  margin: 1.1rem auto 0;
  color: var(--nl-slate-300);
  font-size: 1.05rem;
  line-height: 1.7;
}

.nl-study-flow__rail {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  margin: 0 auto 2rem;
  max-width: 66rem;
  padding: 0.9rem;
  border: 1px solid rgba(125, 211, 252, 0.16);
  border-radius: 1.25rem;
  background: rgba(2, 6, 23, 0.38);
}

.nl-study-flow__rail span {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 2.25rem;
  border-radius: 999px;
  background: rgba(125, 211, 252, 0.11);
  color: var(--nl-sky-100);
  padding: 0.45rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 900;
  white-space: nowrap;
}

.nl-study-flow__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

.nl-study-step {
  position: relative;
  min-height: 11.5rem;
  overflow: hidden;
  border-radius: 1.25rem;
  border: 1px solid rgba(148, 163, 184, 0.17);
  background:
    linear-gradient(145deg, rgba(15, 23, 42, 0.86), rgba(8, 47, 73, 0.35)),
    rgba(255, 255, 255, 0.045);
  padding: 1.15rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.055);
}

.nl-study-step::after {
  content: "";
  position: absolute;
  right: -2.2rem;
  top: -2.2rem;
  width: 6.25rem;
  height: 6.25rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.10);
  pointer-events: none;
}

.nl-study-step b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  margin-bottom: 1rem;
  border-radius: 0.8rem;
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
  font-size: 0.78rem;
  font-weight: 1000;
}

.nl-study-step h3 {
  margin: 0;
  color: #fff;
  font-family: var(--nl-font-display);
  font-size: 1.08rem;
  letter-spacing: 0;
  line-height: 1.2;
}

.nl-study-step p {
  margin-top: 0.65rem;
  color: var(--nl-slate-300);
  font-size: 0.92rem;
  line-height: 1.65;
}

.nl-study-flow__explain {
  max-width: 58rem;
  margin: 1.6rem auto 0;
  border: 1px solid rgba(125, 211, 252, 0.18);
  border-radius: 1.25rem;
  background: rgba(125, 211, 252, 0.08);
  padding: 1.2rem 1.35rem;
  color: var(--nl-slate-200);
  line-height: 1.75;
  text-align: center;
}

.nl-features__head {
  max-width: 48rem;
  margin-bottom: 3rem;
}

.nl-features__title {
  font-size: 2.25rem;
  line-height: 1.05;
  color: #fff;
}

.nl-features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

/* Trust */
.nl-trust {
  padding-top: 2rem;
}

.nl-trust__wrap {
  display: grid;
  gap: 2rem;
  border: 1px solid rgba(125, 211, 252, 0.16);
  border-radius: 1.75rem;
  background:
    linear-gradient(135deg, rgba(2, 6, 23, 0.68), rgba(8, 47, 73, 0.38)),
    rgba(255, 255, 255, 0.045);
  padding: 1.25rem;
  box-shadow: var(--nl-shadow-card);
}

.nl-trust__intro {
  max-width: 34rem;
}

.nl-trust__title {
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.06;
  color: #fff;
}

.nl-trust__lead {
  margin-top: 1rem;
  color: var(--nl-slate-300);
  font-size: 1rem;
  line-height: 1.7;
}

.nl-trust__privacy {
  margin-top: 1rem;
  border: 1px solid rgba(110, 231, 183, 0.18);
  border-radius: 1rem;
  background: rgba(16, 185, 129, 0.10);
  color: var(--nl-emerald-200);
  padding: 0.95rem 1rem;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.55;
}

.nl-trust__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}

.nl-trust-card {
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 1.1rem;
  background: rgba(2, 6, 23, 0.42);
  padding: 1rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.045);
}

.nl-trust-card h3 {
  color: #fff;
  font-family: var(--nl-font-display);
  font-size: 1rem;
  letter-spacing: 0;
  line-height: 1.25;
}

.nl-trust-card p {
  margin-top: 0.55rem;
  color: var(--nl-slate-300);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Paths */
.nl-paths__intro {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.nl-paths__title {
  font-size: 2.25rem;
  line-height: 1.05;
  color: #fff;
}

.nl-paths__lead {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--nl-slate-300);
}

.nl-paths__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.nl-path-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--nl-radius-2xl);
  border: 1px solid var(--nl-white-10);
  background: rgba(255, 255, 255, 0.055);
  padding: 1.5rem;
  text-align: left;
  transition: transform 0.3s, background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
  color: #fff;
}

.nl-path-card:hover {
  transform: translateY(-6px);
  border-color: var(--nl-white-20);
  background: var(--nl-white-08);
}

.nl-path-card.is-active {
  border-color: rgba(125, 211, 252, 0.50);
  background: rgba(125, 211, 252, 0.12);
  box-shadow: var(--nl-shadow-sky-soft);
}

.nl-path-card__glow {
  position: absolute;
  right: -3.5rem;
  top: -3.5rem;
  width: 9rem;
  height: 9rem;
  border-radius: 50%;
  background: rgba(125, 211, 252, 0.10);
  filter: blur(60px);
  pointer-events: none;
}

.nl-path-card__head {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.nl-path-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 1rem;
  background: rgba(125, 211, 252, 0.15);
  color: var(--nl-sky-100);
  box-shadow: inset 0 0 0 1px rgba(186, 230, 253, 0.15);
}

.nl-path-card__eyebrow {
  border-radius: 9999px;
  background: var(--nl-white-10);
  color: var(--nl-sky-100);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.nl-path-card.is-active .nl-path-card__eyebrow {
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
}

.nl-path-card__title {
  position: relative;
  font-family: var(--nl-font-display);
  font-size: 1.5rem;
  color: #fff;
}

.nl-path-card__desc {
  position: relative;
  margin-top: 0.75rem;
  line-height: 1.7;
  color: var(--nl-slate-300);
}

.nl-path-card__items {
  position: relative;
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.nl-path-card__item {
  display: flex;
  gap: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--nl-slate-200);
}

.nl-check {
  flex: 0 0 auto;
  color: var(--nl-sky-300);
  margin-top: 0.125rem;
}

.nl-paths__detail {
  margin-top: 1.5rem;
  overflow: hidden;
  padding: 1.25rem;
}

.nl-paths__detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.nl-paths__hero-card {
  border-radius: 1.6rem;
  border: 1px solid var(--nl-white-10);
  background: rgba(2, 6, 23, 0.55);
  padding: 1.5rem;
}

.nl-paths__hero-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.nl-paths__hero-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 1rem;
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
  box-shadow: 0 10px 25px rgba(14, 165, 233, 0.30);
}

.nl-paths__hero-sub {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--nl-sky-200);
}

.nl-paths__hero-title {
  font-family: var(--nl-font-display);
  font-size: 1.5rem;
  color: #fff;
}

.nl-paths__hero-text {
  line-height: 1.75;
  color: var(--nl-slate-300);
}

.nl-paths__hero-items {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.nl-paths__hero-item {
  display: flex;
  gap: 0.75rem;
  border-radius: 1rem;
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-04);
  padding: 1rem;
  color: var(--nl-slate-200);
  font-size: 0.95rem;
  line-height: 1.5;
}

.nl-paths__preview {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.nl-paths__preview-card {
  border-radius: 1.5rem;
  border: 1px solid var(--nl-white-10);
  background: rgba(255, 255, 255, 0.055);
  padding: 1.25rem;
}

.nl-paths__preview-card .nl-icon-badge {
  color: var(--nl-sky-100);
}

.nl-paths__preview-title {
  font-family: var(--nl-font-display);
  font-size: 1.125rem;
  color: #fff;
}

.nl-paths__preview-text {
  margin-top: 0.5rem;
  line-height: 1.7;
  color: var(--nl-slate-300);
}

/* Lifestyle */
.nl-lifestyle__wrap {
  max-width: 80rem;
  margin: 0 auto;
  padding: 1.5rem;
  border-radius: var(--nl-radius-3xl);
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-06);
  -webkit-backdrop-filter: blur(40px);
          backdrop-filter: blur(40px);
}

.nl-lifestyle__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

.nl-lifestyle__title {
  font-size: 2.25rem;
  line-height: 1.05;
  color: #fff;
}

.nl-lifestyle__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.nl-lifestyle__card {
  border-radius: 1.5rem;
  border: 1px solid var(--nl-white-10);
  background: rgba(2, 6, 23, 0.45);
  padding: 1.25rem;
  transition: transform 0.3s, background-color 0.3s, border-color 0.3s;
}

.nl-lifestyle__card:hover {
  transform: translateY(-4px);
  border-color: rgba(125, 211, 252, 0.30);
  background: rgba(2, 6, 23, 0.60);
}

.nl-lifestyle__card-title {
  font-family: var(--nl-font-display);
  font-size: 1.25rem;
  color: #fff;
}

.nl-lifestyle__card-text {
  margin-top: 0.5rem;
  color: var(--nl-slate-300);
  line-height: 1.7;
}

/* Tutor pipeline */
.nl-tutor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

.nl-tutor__title {
  font-size: 2.25rem;
  line-height: 1.05;
  color: #fff;
}

.nl-tutor__items {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.nl-tutor__item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  border-radius: 1rem;
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-05);
  padding: 1rem;
  color: var(--nl-slate-200);
}

.nl-pipeline {
  padding: 1.25rem;
}

.nl-pipeline__panel {
  border-radius: 1.5rem;
  border: 1px solid var(--nl-white-10);
  background: rgba(2, 6, 23, 0.60);
  padding: 1.25rem;
}

.nl-pipeline__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--nl-white-10);
  padding-bottom: 1.25rem;
  margin-bottom: 1.25rem;
}

.nl-pipeline__eyebrow {
  font-size: 0.875rem;
  color: var(--nl-slate-400);
}

.nl-pipeline__title {
  font-family: var(--nl-font-display);
  font-size: 1.5rem;
  color: #fff;
}

.nl-pipeline__steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.nl-pipeline__step {
  display: flex;
  gap: 1rem;
  border-radius: 1.5rem;
  border: 1px solid var(--nl-white-10);
  background: rgba(255, 255, 255, 0.045);
  padding: 1rem;
}

.nl-pipeline__num {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 1rem;
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
  font-family: var(--nl-font-display);
  font-size: 0.95rem;
}

.nl-pipeline__step-title {
  font-family: var(--nl-font-display);
  font-size: 1.05rem;
  color: #fff;
}

.nl-pipeline__step-text {
  margin-top: 0.25rem;
  line-height: 1.7;
  color: var(--nl-slate-300);
}

/* Workflow */
.nl-workflow__wrap {
  padding: 1.5rem;
  border-radius: var(--nl-radius-3xl);
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-06);
  -webkit-backdrop-filter: blur(40px);
          backdrop-filter: blur(40px);
}

.nl-workflow__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.nl-workflow__title {
  font-size: 2.25rem;
  line-height: 1.05;
  color: #fff;
}

.nl-workflow__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.nl-workflow__card {
  border-radius: 1.5rem;
  border: 1px solid var(--nl-white-10);
  background: rgba(2, 6, 23, 0.45);
  padding: 1.25rem;
  transition: transform 0.3s, border-color 0.3s;
}

.nl-workflow__card:hover {
  transform: translateY(-4px);
  border-color: rgba(125, 211, 252, 0.30);
}

.nl-workflow__card-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 1rem;
  background: var(--nl-white-10);
  color: var(--nl-sky-200);
  margin-bottom: 1rem;
}

.nl-workflow__card-title {
  font-family: var(--nl-font-display);
  font-size: 1.25rem;
  color: #fff;
}

.nl-workflow__card-text {
  margin-top: 0.5rem;
  line-height: 1.7;
  color: var(--nl-slate-300);
}

/* Quote */
.nl-quote {
  text-align: center;
}

.nl-quote__inner {
  max-width: 64rem;
  margin: 0 auto;
}

.nl-quote__icon {
  margin: 0 auto 1.5rem;
  color: var(--nl-sky-200);
}

.nl-quote__title {
  font-size: clamp(1.75rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: #fff;
}

.nl-quote__text {
  margin: 1.5rem auto 0;
  max-width: 42rem;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--nl-slate-300);
}

/* Pricing */
.nl-pricing__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.nl-pricing__title {
  font-size: 2.25rem;
  line-height: 1.05;
  color: #fff;
}

.nl-pricing__lead {
  margin-top: 1.5rem;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--nl-slate-300);
}

.nl-pricing__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.35rem;
}

.nl-pricing__trust span {
  display: inline-flex;
  align-items: center;
  min-height: 2.1rem;
  border-radius: 999px;
  border: 1px solid rgba(125, 211, 252, 0.20);
  background: rgba(125, 211, 252, 0.08);
  color: var(--nl-sky-100);
  padding: 0.42rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 850;
  line-height: 1.2;
}

.nl-pricing__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.nl-price-card {
  padding: 1.5rem;
}

.nl-price-card--pro {
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(125, 211, 252, 0.30);
}

.nl-price-card__pop {
  position: absolute;
  right: 1.25rem;
  top: 1.25rem;
  border-radius: 9999px;
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 900;
}

.nl-price-card__name {
  font-family: var(--nl-font-display);
  font-size: 1.5rem;
  color: #fff;
}

.nl-price-card__sub {
  margin-top: 0.5rem;
  color: var(--nl-slate-300);
}

.nl-price-card__price {
  margin-top: 1.5rem;
  font-family: var(--nl-font-display);
  font-size: 2.5rem;
  color: #fff;
  line-height: 1;
  display: block;
}

.nl-price-card__today {
  display: block;
}

.nl-price-card__per {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--nl-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--nl-slate-400);
}

.nl-price-card__items {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  color: var(--nl-slate-300);
}

.nl-price-card__item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nl-price-card__cta {
  margin-top: 1.75rem;
}

.nl-price-legal {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(2, 6, 23, 0.30);
  padding: 0.95rem 1rem;
  color: var(--nl-slate-300);
}

.nl-price-legal summary {
  cursor: pointer;
  color: var(--nl-sky-100);
  font-weight: 900;
}

.nl-price-legal summary::marker {
  color: var(--nl-sky-300);
}

.nl-price-legal p {
  margin-top: 0.75rem;
  line-height: 1.65;
  font-size: 0.9rem;
}

/* FAQ */
.nl-faq {
  position: relative;
}

.nl-faq::before {
  content: "";
  position: absolute;
  inset: 4rem auto auto 50%;
  width: min(56rem, 82vw);
  height: 22rem;
  border-radius: 9999px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.16), rgba(14, 165, 233, 0.04) 45%, transparent 70%);
  filter: blur(26px);
  transform: translateX(-50%);
  pointer-events: none;
}

.nl-faq__head {
  position: relative;
  max-width: 54rem;
  margin: 0 auto 2.25rem;
  text-align: center;
}

.nl-faq__title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.05;
  color: #fff;
}

.nl-faq__lead {
  margin-top: 1rem;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--nl-slate-300);
}

.nl-faq__list {
  position: relative;
  display: grid;
  gap: 0.9rem;
  max-width: 64rem;
  margin: 0 auto;
}

.nl-faq__item {
  position: relative;
  border-radius: 0.95rem;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.58)),
    rgba(15, 23, 42, 0.72);
  box-shadow:
    0 18px 45px rgba(2, 6, 23, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.nl-faq__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--nl-sky-200), rgba(125, 211, 252, 0.12));
  opacity: 0;
  transition: opacity 0.2s ease;
}

.nl-faq__item:hover {
  transform: translateY(-2px);
  border-color: rgba(125, 211, 252, 0.34);
  box-shadow:
    0 24px 55px rgba(2, 6, 23, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.nl-faq__item[open] {
  border-color: rgba(125, 211, 252, 0.48);
  background:
    linear-gradient(135deg, rgba(8, 47, 73, 0.58), rgba(15, 23, 42, 0.82)),
    rgba(15, 23, 42, 0.84);
}

.nl-faq__item[open]::before {
  opacity: 1;
}

.nl-faq__item summary {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 4.35rem;
  padding: 1.05rem 4.5rem 1.05rem 1.35rem;
  color: #fff;
  font-weight: 800;
  line-height: 1.35;
  cursor: pointer;
  list-style: none;
  outline: none;
}

.nl-faq__item summary::marker {
  content: "";
}

.nl-faq__item summary::-webkit-details-marker {
  display: none;
}

.nl-faq__item summary:focus-visible {
  box-shadow: inset 0 0 0 2px rgba(125, 211, 252, 0.72);
}

.nl-faq__item summary::before,
.nl-faq__item summary::after {
  content: "";
  position: absolute;
  right: 1.85rem;
  top: 50%;
  width: 0.8rem;
  height: 2px;
  border-radius: 9999px;
  background: #e0f2fe;
  transform: translateY(-50%);
  transition: transform 0.2s ease, opacity 0.2s ease;
  z-index: 1;
}

.nl-faq__item summary span {
  min-width: 0;
}

.nl-faq__item summary::selection {
  background: rgba(125, 211, 252, 0.28);
}

.nl-faq__item summary:hover {
  color: var(--nl-sky-100);
}

.nl-faq__item summary:active {
  color: #fff;
}

.nl-faq__item summary {
  counter-increment: faq;
}

.nl-faq__item summary > * {
  position: relative;
}

.nl-faq__item summary::before {
  box-shadow: 0 0 0 12px rgba(125, 211, 252, 0.10), 0 0 0 22px rgba(125, 211, 252, 0.035);
}

.nl-faq__item summary::after {
  transform: translateY(-50%) rotate(90deg);
}

.nl-faq__item[open] summary::after {
  opacity: 0;
  transform: translateY(-50%) rotate(0deg);
}

.nl-faq__answer {
  border-top: 1px solid var(--nl-white-10);
  padding: 0 1.35rem 1.25rem;
  color: var(--nl-slate-300);
  line-height: 1.75;
  background: rgba(2, 6, 23, 0.22);
}

.nl-faq__answer p {
  margin-top: 0.9rem;
}

.nl-faq__answer p:first-child {
  color: var(--nl-slate-200);
}

/* CTA banner */
.nl-cta {
  padding: 2.5rem 1.25rem 7rem;
}

.nl-cta__wrap {
  max-width: 80rem;
  margin: 0 auto;
  padding: 2rem;
  border-radius: var(--nl-radius-3xl);
  border: 1px solid rgba(186, 230, 253, 0.20);
  background: var(--nl-sky-300);
  color: var(--nl-slate-950);
  box-shadow: 0 0 70px rgba(56, 189, 248, 0.35);
}

.nl-cta__grid {
  display: grid;
  align-items: center;
  gap: 2rem;
  grid-template-columns: 1fr;
}

.nl-cta__title {
  font-size: clamp(2rem, 5vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--nl-slate-950);
}

.nl-cta__text {
  margin-top: 1rem;
  max-width: 42rem;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: #1e293b;
}

.nl-cta__line {
  margin-top: 1rem;
  color: #082f49;
  font-weight: 950;
}

.nl-cta__actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: stretch;
}

.nl-cta__secondary {
  background: rgba(2, 6, 23, 0.10);
  border-color: rgba(2, 6, 23, 0.16);
  color: #082f49;
}

.nl-cta__secondary:hover {
  background: rgba(2, 6, 23, 0.16);
  color: #020617;
}

/* Footer */
.nl-footer {
  border-top: 1px solid var(--nl-white-10);
  padding: 2.5rem 1.25rem;
}

.nl-footer__inner {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--nl-slate-400);
}

.nl-footer__links {
  display: flex;
  gap: 1.25rem;
}

.nl-footer__links a {
  transition: color 0.2s;
}

.nl-footer__links a:hover {
  color: #fff;
}

/* ---------- 9. Keyframes ---------- */
@keyframes nl-float {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-24px) scale(1.08);
  }
}

/* ---------- 10. Responsive ---------- */
@media (min-width: 640px) {
  .nl-hero__ctas {
    flex-direction: row;
  }
  .nl-cta__grid {
    grid-template-columns: 1fr auto;
  }
  .nl-cta__actions {
    align-items: flex-end;
  }
  .nl-tp-citations {
    grid-template-columns: 1fr 1fr;
  }
  .nl-study-flow__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .nl-section {
    padding: 6rem 2rem;
  }
  .nl-container {
    padding: 0 2rem;
  }
  .nl-hero {
    padding: 10rem 2rem 7rem;
  }
  .nl-cta {
    padding: 2.5rem 2rem 7rem;
  }
  .nl-footer {
    padding: 2.5rem 2rem;
  }
  .nl-hero__stats {
    grid-template-columns: repeat(3, 1fr);
  }
  .nl-features__grid {
    grid-template-columns: 1fr 1fr;
  }
  .nl-study-flow__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .nl-lifestyle__cards {
    grid-template-columns: repeat(3, 1fr);
  }
  .nl-lifestyle__wrap {
    padding: 2.5rem;
  }
  .nl-workflow__wrap {
    padding: 2.5rem;
  }
  .nl-workflow__cards {
    grid-template-columns: 1fr 1fr;
  }
  .nl-pricing__cards {
    grid-template-columns: 1fr;
  }
  .nl-paths__preview {
    grid-template-columns: repeat(3, 1fr);
  }
  .nl-footer__inner {
    flex-direction: row;
    align-items: center;
  }
  .nl-tutor-preview {
    padding: 1.25rem;
  }
  .nl-tutor-preview__glow-a {
    width: 16rem;
    height: 16rem;
  }
  .nl-cta__wrap {
    padding: 3rem;
  }
  .nl-features__title,
  .nl-paths__title,
  .nl-tutor__title,
  .nl-pricing__title {
    font-size: 3rem;
  }
  .nl-lifestyle__title,
  .nl-workflow__title {
    font-size: 2.75rem;
  }
  .nl-hero__title {
    font-size: clamp(3.5rem, 8vw, 6rem);
  }
  .nl-hero__subtitle {
    font-size: 1.25rem;
  }
}

@media (min-width: 1024px) {
  .nl-nav__links {
    display: inline-flex;
  }
  .nl-nav__cta {
    display: inline-flex;
  }
  .nl-nav__menu-btn {
    display: none;
  }
  .nl-features__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .nl-study-flow__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .nl-trust__wrap {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: center;
    padding: 2rem;
  }
  .nl-trust__grid {
    grid-template-columns: 1fr 1fr;
  }
  .nl-paths__intro {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: end;
  }
  .nl-paths__grid {
    grid-template-columns: 1fr 1fr;
  }
  .nl-paths__detail-grid {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: stretch;
  }
  .nl-lifestyle__grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
  .nl-tutor-grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
  .nl-workflow__grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
  .nl-pricing__grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
  .nl-tutor-preview__grid {
    grid-template-columns: 0.92fr 1.08fr;
  }
  .nl-features__title,
  .nl-paths__title,
  .nl-tutor__title,
  .nl-pricing__title {
    font-size: 3.75rem;
  }
  .nl-hero__title {
    font-size: clamp(4rem, 9vw, 7rem);
  }
}

/* ============================================================
   Task-02: interactivity layer animation states
   ============================================================ */

/* Scroll-triggered fade-in (IntersectionObserver toggles .is-visible) */
.nl-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease-out, transform 0.55s ease-out;
  will-change: opacity, transform;
}
.nl-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Mobile nav: hamburger / X icon swap */
.nl-nav__menu-icon--x { display: none; }
.nl-nav__menu-btn.is-open .nl-nav__menu-icon--menu { display: none; }
.nl-nav__menu-btn.is-open .nl-nav__menu-icon--x { display: inline-block; }

/* Mobile nav dropdown */
.nl-nav__mobile {
  display: none;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  border-top: 1px solid var(--nl-white-10, rgba(255, 255, 255, 0.1));
  background: rgba(2, 6, 23, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.nl-nav.is-open .nl-nav__mobile {
  display: flex;
}
.nl-nav__mobile-link {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: 1rem;
  color: var(--nl-slate-200, #e2e8f0);
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.2s ease;
}
.nl-nav__mobile-link:hover,
.nl-nav__mobile-link:focus-visible {
  background: var(--nl-white-10, rgba(255, 255, 255, 0.1));
  color: #ffffff;
}

/* Hide hamburger on desktop, hide mobile dropdown on desktop */
@media (min-width: 768px) {
  .nl-nav__mobile,
  .nl-nav.is-open .nl-nav__mobile {
    display: none;
  }
}

/* Reduced motion: kill reveal transition entirely */
@media (prefers-reduced-motion: reduce) {
  .nl-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===================== Language toggle button ===================== */
.nl-lang-btn {
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.nl-lang-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}
.nl-lang-btn:focus-visible {
  outline: 2px solid rgba(125, 211, 252, 0.6);
  outline-offset: 2px;
}

/* ============================================================
   PRODUCT PREVIEW MODAL (.nl-pv)
   Scene-based interactive preview opened by "Watch preview".
   ============================================================ */
html.nl-pv-open,
body.nl-pv-open {
  overflow: hidden;
}

.nl-pv {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(0.75rem, 3vw, 2rem);
}
.nl-pv[hidden] {
  display: none;
}

.nl-pv__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.72);
  -webkit-backdrop-filter: blur(10px);
          backdrop-filter: blur(10px);
  animation: nl-pv-fade 0.25s ease;
}

.nl-pv__dialog {
  position: relative;
  width: min(1040px, 100%);
  max-height: min(92vh, 760px);
  display: flex;
  flex-direction: column;
  padding: clamp(1rem, 2.4vw, 1.6rem);
  border-radius: var(--nl-radius-2xl);
  border: 1px solid rgba(148, 163, 184, 0.24);
  background:
    radial-gradient(circle at 18% 0%, rgba(56, 189, 248, 0.14), transparent 38%),
    linear-gradient(145deg, #101827 0%, #132235 58%, #0b1322 100%);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.55);
  animation: nl-pv-pop 0.32s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  isolation: isolate;
}

.nl-pv__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  flex: 0 0 auto;
}
.nl-pv__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--nl-sky-100);
  letter-spacing: 0.01em;
}
.nl-pv__brand-dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 999px;
  background: var(--nl-sky-400);
  box-shadow: var(--nl-shadow-sky);
}
.nl-pv__head-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.nl-pv__switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--nl-white-12);
  background: var(--nl-white-06);
  color: var(--nl-slate-200);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.nl-pv__switch[hidden] {
  display: none;
}
.nl-pv__switch svg {
  transform: rotate(180deg);
}
.nl-pv__switch:hover {
  background: var(--nl-white-10);
  color: #fff;
}
.nl-pv__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  border: 1px solid var(--nl-white-12);
  background: var(--nl-white-06);
  color: var(--nl-slate-200);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.nl-pv__close:hover {
  background: var(--nl-white-12);
  color: #fff;
  border-color: var(--nl-white-20);
}

/* ---- Branch chooser ---- */
.nl-pv__chooser {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  padding: clamp(1rem, 4vw, 2.5rem) 0;
}
.nl-pv__chooser[hidden] {
  display: none;
}
.nl-pv__chooser-title {
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 800;
  margin: 0 0 0.5rem;
}
.nl-pv__chooser-sub {
  color: var(--nl-slate-300);
  margin: 0 auto 2rem;
  max-width: 42ch;
  font-size: 0.95rem;
}
.nl-pv__choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  max-width: 620px;
  width: 100%;
  margin: 0 auto;
}
.nl-pv__choice {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
  text-align: left;
  padding: 1.3rem;
  border-radius: var(--nl-radius-lg);
  border: 1px solid var(--nl-white-12);
  background: var(--nl-white-05);
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.nl-pv__choice:hover,
.nl-pv__choice:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(125, 211, 252, 0.5);
  background: var(--nl-white-09);
  box-shadow: var(--nl-shadow-sky-soft);
  outline: none;
}
.nl-pv__choice .nl-icon-badge {
  margin: 0;
}
.nl-pv__choice-title {
  font-size: 1.05rem;
  font-weight: 800;
  margin: 0;
}
.nl-pv__choice-sub {
  font-size: 0.85rem;
  color: var(--nl-slate-300);
  margin: 0;
}

/* ---- Scene player ---- */
.nl-pv__player {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.nl-pv__player[hidden] {
  display: none;
}
.nl-pv__stage {
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(1rem, 2.5vw, 2rem);
  align-items: center;
  min-height: 0;
  overflow: hidden;
}
.nl-pv__visual {
  position: relative;
  min-height: 300px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
/* Inner mock card uses the same glass language as the hero tutor preview. */
.nl-pv__mock {
  width: 100%;
  border-radius: var(--nl-radius-lg);
  border: 1px solid var(--nl-white-10);
  background: linear-gradient(160deg, rgba(8, 47, 73, 0.55), rgba(2, 6, 23, 0.55));
  -webkit-backdrop-filter: blur(20px);
          backdrop-filter: blur(20px);
  box-shadow: var(--nl-shadow-card);
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.nl-pv__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.nl-pv__eyebrow {
  text-transform: uppercase;
  letter-spacing: var(--nl-tracking-eyebrow);
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--nl-sky-300);
  margin: 0 0 0.6rem;
}
.nl-pv__headline {
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 0.7rem;
}
.nl-pv__body {
  color: var(--nl-slate-300);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
}
.nl-pv__cta {
  margin-top: 1.2rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
}
.nl-pv__cta[hidden] {
  display: none;
}
.nl-pv__closing {
  font-size: 0.85rem;
  color: var(--nl-sky-200);
  line-height: 1.5;
  margin: 0;
}
.nl-pv__replay {
  background: none;
  border: none;
  color: var(--nl-slate-300);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 0;
}
.nl-pv__replay:hover {
  color: #fff;
}

/* Scene enter transition */
.nl-pv__stage {
  transition: opacity 0.32s ease, transform 0.32s ease;
}
.nl-pv__stage.is-leaving {
  opacity: 0;
  transform: translateY(10px);
}

/* ---- Nav + chapter dots ---- */
.nl-pv__nav {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--nl-white-08);
}
.nl-pv__navbtn {
  flex: 0 0 auto;
  padding: 0.55rem 1rem;
  border-radius: 0.85rem;
  border: 1px solid var(--nl-white-12);
  background: var(--nl-white-06);
  color: #fff;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s;
}
.nl-pv__navbtn:hover:not(:disabled) {
  background: var(--nl-white-12);
}
.nl-pv__navbtn:disabled {
  opacity: 0.4;
  cursor: default;
}
.nl-pv__navbtn--primary {
  background: var(--nl-sky-400);
  color: var(--nl-slate-950);
  border-color: transparent;
  box-shadow: var(--nl-shadow-sky);
}
.nl-pv__navbtn--primary:hover:not(:disabled) {
  background: var(--nl-sky-300);
}
.nl-pv__dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  flex: 1 1 auto;
}
.nl-pv__dot {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: none;
  color: var(--nl-slate-400);
  font: inherit;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.nl-pv__dot:hover {
  color: var(--nl-slate-200);
}
.nl-pv__dot-pip {
  position: relative;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
  background: var(--nl-white-20);
  overflow: hidden;
  flex: 0 0 auto;
}
.nl-pv__dot.is-active {
  color: #fff;
  background: var(--nl-white-08);
  border-color: var(--nl-white-12);
}
.nl-pv__dot.is-active .nl-pv__dot-pip {
  background: var(--nl-sky-400);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.7);
}
.nl-pv__dot.is-done .nl-pv__dot-pip {
  background: var(--nl-sky-600);
}
/* Autoplay countdown fill on the active pip */
.nl-pv__dot.is-active.is-playing .nl-pv__dot-pip::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.85);
  transform-origin: left center;
  animation: nl-pv-countdown linear forwards;
  animation-duration: var(--nl-pv-dwell, 4000ms);
}
/* Hover/focus pauses autoplay (JS); freeze the countdown to match. */
.nl-pv__dialog:hover .nl-pv__dot.is-active.is-playing .nl-pv__dot-pip::after,
.nl-pv__dialog:focus-within .nl-pv__dot.is-active.is-playing .nl-pv__dot-pip::after {
  animation-play-state: paused;
}

/* ---- Mock sub-components (reused across scenes) ---- */
.nl-pv-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.7rem;
  border-radius: 0.7rem;
  border: 1px solid var(--nl-white-08);
  background: var(--nl-white-05);
  font-size: 0.8rem;
}
.nl-pv-row__icon {
  display: inline-flex;
  color: var(--nl-sky-300);
  flex: 0 0 auto;
}
.nl-pv-row__name {
  font-weight: 700;
  color: var(--nl-slate-200);
}
.nl-pv-row__meta {
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--nl-slate-400);
}
.nl-pv-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.14);
  border: 1px solid rgba(56, 189, 248, 0.32);
  color: var(--nl-sky-100);
  font-size: 0.72rem;
  font-weight: 700;
}
.nl-pv-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.nl-pv-bubble {
  padding: 0.7rem 0.85rem;
  border-radius: 0.85rem;
  font-size: 0.82rem;
  line-height: 1.5;
}
.nl-pv-bubble--user {
  align-self: flex-end;
  background: var(--nl-sky-400);
  color: var(--nl-slate-950);
  font-weight: 700;
  border-bottom-right-radius: 0.3rem;
  max-width: 90%;
}
.nl-pv-bubble--ai {
  background: var(--nl-white-07);
  border: 1px solid var(--nl-white-10);
  color: var(--nl-slate-200);
  border-bottom-left-radius: 0.3rem;
}
.nl-pv-bar {
  height: 0.5rem;
  border-radius: 999px;
  background: var(--nl-white-08);
  overflow: hidden;
}
.nl-pv-bar__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--nl-sky-500), var(--nl-sky-300));
}
.nl-pv-ans__line {
  display: flex;
  gap: 0.5rem;
  font-size: 0.8rem;
  line-height: 1.5;
  padding: 0.15rem 0;
}
.nl-pv-ans__label {
  flex: 0 0 5.2rem;
  color: var(--nl-sky-300);
  font-weight: 800;
}
.nl-pv-ans__val {
  color: var(--nl-slate-200);
}
.nl-pv-formula {
  margin: 0.2rem 0;
  padding: 0.5rem 0.7rem;
  border-radius: 0.6rem;
  background: rgba(2, 6, 23, 0.5);
  border: 1px solid var(--nl-white-08);
  font-family: var(--font-mono, monospace);
  color: var(--nl-sky-200);
  font-size: 0.82rem;
  text-align: center;
}
.nl-pv-tiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}
.nl-pv-tile {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.7rem;
  border-radius: 0.75rem;
  border: 1px solid var(--nl-white-08);
  background: var(--nl-white-05);
}
.nl-pv-tile__icon {
  color: var(--nl-sky-300);
}
.nl-pv-tile__name {
  font-size: 0.78rem;
  font-weight: 800;
  color: #fff;
}
.nl-pv-tile__sub {
  font-size: 0.68rem;
  color: var(--nl-slate-400);
}
.nl-pv-ring {
  width: 92px;
  height: 92px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  margin: 0 auto;
  background:
    radial-gradient(closest-side, rgba(2, 6, 23, 0.85) 78%, transparent 80% 100%),
    conic-gradient(var(--nl-sky-400) 64%, var(--nl-white-10) 0);
  color: #fff;
  font-weight: 800;
  font-size: 1.05rem;
}
.nl-pv-streak {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 800;
  color: var(--nl-emerald-200);
}
.nl-pv-badge {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(110, 231, 183, 0.14);
  border: 1px solid rgba(110, 231, 183, 0.3);
  color: var(--nl-emerald-200);
  font-size: 0.68rem;
  font-weight: 800;
}
.nl-pv-flip {
  position: relative;
  min-height: 96px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1rem;
  border-radius: 0.85rem;
  border: 1px solid var(--nl-white-10);
  background: linear-gradient(150deg, rgba(56, 189, 248, 0.12), rgba(2, 6, 23, 0.4));
}
.nl-pv-flip__front {
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
}
.nl-pv-flip__back {
  font-size: 0.85rem;
  color: var(--nl-sky-200);
  margin-top: 0.3rem;
}

.nl-pv-german-scene {
  min-height: 17.5rem;
  gap: 0.72rem;
  background:
    radial-gradient(circle at 14% 12%, rgba(110, 231, 183, 0.11), transparent 34%),
    radial-gradient(circle at 88% 4%, rgba(56, 189, 248, 0.10), transparent 32%),
    linear-gradient(160deg, rgba(6, 78, 59, 0.34), rgba(2, 6, 23, 0.58));
}
.nl-pv-german-plan {
  display: grid;
  gap: 0.55rem;
}
.nl-pv-german-plan .nl-pv-row {
  opacity: 0;
  transform: translateY(8px);
  animation: nl-pv-german-rise 0.44s ease forwards;
}
.nl-pv-german-plan .nl-pv-row:nth-child(2) {
  animation-delay: 0.18s;
}
.nl-pv-german-plan .nl-pv-row:nth-child(3) {
  animation-delay: 0.36s;
}
.nl-pv-german-card {
  min-height: 8.8rem;
  padding: 0;
  overflow: hidden;
  perspective: 900px;
}
.nl-pv-german-card__inner {
  position: relative;
  width: 100%;
  min-height: 8.8rem;
  transform-style: preserve-3d;
  animation: nl-pv-german-flip 4.2s ease-in-out infinite;
}
.nl-pv-german-card__face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 0.28rem;
  padding: 1rem;
  backface-visibility: hidden;
}
.nl-pv-german-card__face strong {
  color: #fff;
  font-size: 1.35rem;
  font-weight: 900;
}
.nl-pv-german-card__face span {
  color: var(--nl-sky-100);
  font-size: 0.78rem;
  font-weight: 800;
}
.nl-pv-german-card__face small {
  color: var(--nl-slate-400);
  font-size: 0.68rem;
  font-weight: 800;
}
.nl-pv-german-card__face--back {
  transform: rotateY(180deg);
}
.nl-pv-german-article {
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.16);
  border: 1px solid rgba(56, 189, 248, 0.34);
}
.nl-pv-german-card__chips .nl-pv-chip {
  opacity: 0;
  transform: translateY(7px);
  animation: nl-pv-german-rise 0.35s ease forwards;
  animation-delay: 2.25s;
}
.nl-pv-german-card__chips .nl-pv-chip:nth-child(2) {
  animation-delay: 2.45s;
}
.nl-pv-german-chat .nl-pv-bubble p {
  margin: 0;
}
.nl-pv-german-question,
.nl-pv-german-answer {
  opacity: 0;
  transform: translateY(8px);
  animation: nl-pv-german-rise 0.42s ease forwards;
}
.nl-pv-german-answer {
  animation-delay: 0.85s;
}
.nl-pv-german-rule {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0.45rem;
  margin-top: 0.55rem;
}
.nl-pv-german-rule span,
.nl-pv-german-rule strong {
  padding: 0.46rem 0.55rem;
  border-radius: 0.55rem;
  text-align: center;
  font-size: 0.76rem;
}
.nl-pv-german-rule span {
  background: rgba(148, 163, 184, 0.12);
  color: var(--nl-slate-300);
  text-decoration: line-through;
}
.nl-pv-german-rule strong {
  background: rgba(110, 231, 183, 0.16);
  border: 1px solid rgba(110, 231, 183, 0.35);
  color: var(--nl-emerald-100);
}
.nl-pv-german-input {
  display: grid;
  align-items: center;
  min-height: 2.55rem;
  padding: 0.55rem 0.7rem;
  border-radius: 0.8rem;
  border: 1px solid rgba(56, 189, 248, 0.28);
  background: rgba(2, 6, 23, 0.46);
  color: #fff;
  font-weight: 850;
  overflow: hidden;
}
.nl-pv-german-input span {
  display: inline-block;
  max-width: 0;
  white-space: nowrap;
  overflow: hidden;
  animation: nl-pv-german-type 2.2s steps(31, end) forwards;
}
.nl-pv-german-input span::after {
  content: '';
  display: inline-block;
  width: 1px;
  height: 1em;
  margin-left: 2px;
  background: var(--nl-sky-200);
  vertical-align: -0.12em;
  animation: nl-pv-caret 0.8s steps(1, end) infinite;
}
.nl-pv-german-sentences .nl-pv-row,
.nl-pv-german-sentences .nl-pv-chips {
  opacity: 0;
  transform: translateY(8px);
  animation: nl-pv-german-rise 0.38s ease forwards;
}
.nl-pv-german-sentences .nl-pv-row:nth-child(3) {
  animation-delay: 1.2s;
}
.nl-pv-german-sentences .nl-pv-chips {
  animation-delay: 2.25s;
}
.nl-pv-german-game__q {
  padding: 0.8rem;
  border-radius: 0.85rem;
  background: rgba(2, 6, 23, 0.42);
  border: 1px solid var(--nl-white-08);
  color: #fff;
  font-weight: 900;
  text-align: center;
}
.nl-pv-german-game .nl-pv-chip {
  min-width: 4.25rem;
  justify-content: center;
  transform: translateY(4px);
  animation: nl-pv-german-option 3.2s ease-in-out infinite;
}
.nl-pv-german-game .nl-pv-chip:nth-child(2) {
  animation-delay: 0.12s;
}
.nl-pv-german-game .nl-pv-chip:nth-child(3) {
  animation-delay: 0.24s;
}
.nl-pv-german-game .nl-pv-chip.is-correct {
  background: rgba(110, 231, 183, 0.18);
  border-color: rgba(110, 231, 183, 0.55);
  color: var(--nl-emerald-100);
  animation-name: nl-pv-german-correct;
}
.nl-pv-german-feedback {
  align-self: flex-start;
  padding: 0.42rem 0.65rem;
  border-radius: 999px;
  background: rgba(110, 231, 183, 0.14);
  border: 1px solid rgba(110, 231, 183, 0.32);
  color: var(--nl-emerald-100);
  font-size: 0.72rem;
  font-weight: 900;
  opacity: 0;
  transform: translateY(6px);
  animation: nl-pv-german-rise 0.36s ease forwards;
  animation-delay: 1.4s;
}
.nl-pv-german-progress .nl-pv-bar__fill {
  transform: scaleX(0);
  transform-origin: left center;
  animation: nl-pv-german-progress-fill 1.8s ease forwards;
}
.nl-pv-german-progress .nl-pv-bar:nth-of-type(2) .nl-pv-bar__fill {
  animation-delay: 0.35s;
}
.nl-pv-german-cta {
  align-items: center;
  text-align: center;
}
.nl-pv-german-cta .nl-pv-tile__icon {
  animation: nl-pv-send-pulse 1.05s ease-in-out infinite;
}
.nl-pv-german-cta__word {
  color: #fff;
  font-size: 1.55rem;
  font-weight: 950;
}
.nl-pv-german-cta__line {
  max-width: 22rem;
  color: var(--nl-slate-300);
  font-size: 0.82rem;
  line-height: 1.45;
}

@keyframes nl-pv-german-rise {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes nl-pv-german-flip {
  0%, 38% { transform: rotateY(0); }
  52%, 88% { transform: rotateY(180deg); }
  100% { transform: rotateY(360deg); }
}
@keyframes nl-pv-german-type {
  to { max-width: 24rem; }
}
@keyframes nl-pv-german-option {
  50% { transform: translateY(0); }
}
@keyframes nl-pv-german-correct {
  45%, 70% {
    transform: translateY(0) scale(1.04);
    box-shadow: 0 0 0 8px rgba(110, 231, 183, 0.12);
  }
}
@keyframes nl-pv-german-progress-fill {
  to { transform: scaleX(1); }
}

@media (prefers-reduced-motion: reduce) {
  .nl-pv-german-plan .nl-pv-row,
  .nl-pv-german-card__inner,
  .nl-pv-german-card__chips .nl-pv-chip,
  .nl-pv-german-question,
  .nl-pv-german-answer,
  .nl-pv-german-input span,
  .nl-pv-german-input span::after,
  .nl-pv-german-sentences .nl-pv-row,
  .nl-pv-german-sentences .nl-pv-chips,
  .nl-pv-german-game .nl-pv-chip,
  .nl-pv-german-feedback,
  .nl-pv-german-progress .nl-pv-bar__fill,
  .nl-pv-german-cta .nl-pv-tile__icon {
    animation: none;
    opacity: 1;
    transform: none;
  }
  .nl-pv-german-input span {
    max-width: none;
  }
}

.nl-pv-ask-scene {
  --nl-pv-ask-cycle: 7600ms;
  min-height: 21rem;
  gap: 0.65rem;
  background:
    radial-gradient(circle at 88% 0%, rgba(34, 211, 238, 0.12), transparent 34%),
    linear-gradient(160deg, rgba(8, 47, 73, 0.50), rgba(2, 6, 23, 0.58));
}
.nl-pv-ask-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--nl-white-08);
}
.nl-pv-ask-title,
.nl-pv-ask-context {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
}
.nl-pv-ask-title {
  color: #fff;
  font-weight: 900;
  font-size: 0.84rem;
}
.nl-pv-ask-title svg {
  color: var(--nl-sky-300);
}
.nl-pv-ask-context {
  flex: 0 1 auto;
  padding: 0.24rem 0.52rem;
  border-radius: 999px;
  border: 1px solid rgba(125, 211, 252, 0.24);
  background: rgba(56, 189, 248, 0.10);
  color: var(--nl-sky-100);
  font-size: 0.64rem;
  font-weight: 800;
  white-space: nowrap;
}
.nl-pv-ask-chat {
  display: flex;
  flex-direction: column;
  gap: 0.52rem;
  min-height: 0;
}
.nl-pv-ask-composer {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.45rem;
  padding: 0.55rem 0.6rem;
  border-radius: 0.85rem;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(2, 6, 23, 0.46);
  color: rgba(226, 232, 240, 0.82);
  overflow: hidden;
}
.nl-pv-ask-composer svg {
  color: rgba(125, 211, 252, 0.82);
}
.nl-pv-ask-typed {
  min-width: 0;
  width: auto;
  max-width: none;
  white-space: nowrap;
  overflow: hidden;
  font-size: 0.76rem;
  font-weight: 750;
}
.nl-pv-ask-typed::after {
  content: '';
  display: inline-block;
  width: 1px;
  height: 1em;
  margin-left: 2px;
  vertical-align: -0.12em;
  background: var(--nl-sky-200);
  animation: nl-pv-caret 0.8s steps(1, end) infinite;
}
.nl-pv-ask-send {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.58rem;
  display: inline-grid;
  place-items: center;
  background: var(--nl-sky-400);
  color: #061021;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}
.nl-pv-ask-send.is-live {
  opacity: 1;
  transform: translateY(0) scale(1);
  animation: nl-pv-send-pulse 0.85s ease-in-out infinite;
}
.nl-pv-ask-user {
  opacity: 0;
  transform: translateY(8px);
  overflow: hidden;
  transition: opacity 0.28s ease, transform 0.28s ease, max-height 0.28s ease;
}
.nl-pv-ask-thinking {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  padding: 0.62rem 0.72rem;
  border-radius: 0.85rem 0.85rem 0.85rem 0.3rem;
  border: 1px solid var(--nl-white-10);
  background: var(--nl-white-07);
  opacity: 0;
  overflow: hidden;
  transition: opacity 0.28s ease, transform 0.28s ease, max-height 0.28s ease;
}
.nl-pv-ask-thinking span {
  width: 0.34rem;
  height: 0.34rem;
  border-radius: 999px;
  background: var(--nl-sky-300);
  animation: nl-pv-dot 0.78s ease-in-out infinite;
}
.nl-pv-ask-thinking span:nth-child(2) {
  animation-delay: 0.12s;
}
.nl-pv-ask-thinking span:nth-child(3) {
  animation-delay: 0.24s;
}
.nl-pv-ask-status {
  display: grid;
  gap: 0.34rem;
  width: min(21rem, 72%);
  align-self: flex-start;
  padding: 0.55rem 0.65rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(125, 211, 252, 0.16);
  background: rgba(56, 189, 248, 0.08);
  color: var(--nl-sky-100);
  font-size: 0.68rem;
  font-weight: 850;
  opacity: 0;
  transform: translateY(8px);
  overflow: hidden;
  transition: opacity 0.28s ease, transform 0.28s ease, max-height 0.28s ease;
}
.nl-pv-ask-status i {
  position: relative;
  height: 0.28rem;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(125, 211, 252, 0.14);
}
.nl-pv-ask-status i::after {
  content: '';
  position: absolute;
  inset: 0;
  width: 46%;
  border-radius: inherit;
  background: linear-gradient(90deg, transparent, var(--nl-sky-300), transparent);
  transform: translateX(-110%);
  animation: nl-pv-status-scan 1.15s ease-in-out infinite;
}
.nl-pv-ask-answer {
  position: relative;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease, max-height 0.35s ease;
}
.nl-pv-ask-answer p {
  margin: 0;
}
.nl-pv-ask-answer p + .nl-pv-formula,
.nl-pv-ask-answer .nl-pv-formula + p,
.nl-pv-ask-answer p + .nl-pv-chips {
  margin-top: 0.5rem;
}
.nl-pv-ask-answer::after {
  display: none;
}
.nl-pv-ask-answer .nl-pv-chip {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.28s ease, transform 0.28s ease;
}

@keyframes nl-pv-caret {
  50% { opacity: 0; }
}
@keyframes nl-pv-send-pulse {
  50% { box-shadow: 0 0 0 8px rgba(56, 189, 248, 0.16); }
}
@keyframes nl-pv-dot {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.45; }
  40% { transform: translateY(-3px); opacity: 1; }
}
@keyframes nl-pv-status-scan {
  to { transform: translateX(220%); }
}

@media (max-width: 640px) {
  .nl-pv-ask-scene {
    min-height: 23rem;
  }
  .nl-pv-ask-head {
    align-items: flex-start;
  }
  .nl-pv-ask-context {
    max-width: 10rem;
    white-space: normal;
    line-height: 1.2;
  }
  .nl-pv-ask-composer {
    align-items: start;
  }
  .nl-pv-ask-typed {
    width: 100%;
    white-space: normal;
    line-height: 1.35;
  }
  .nl-pv-ask-answer {
    max-height: 22rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nl-pv-ask-typed {
    width: 100%;
    animation: none;
  }
  .nl-pv-ask-send,
  .nl-pv-ask-user,
  .nl-pv-ask-status,
  .nl-pv-ask-answer {
    opacity: 1;
    transform: none;
    animation: none;
  }
  .nl-pv-ask-answer {
    max-height: none;
  }
  .nl-pv-ask-thinking {
    display: none;
  }
}

/* ---- Product tour replica screens ---- */
.nl-pv__dialog {
  width: min(1280px, 100%);
}
.nl-pv__stage {
  grid-template-columns: minmax(0, 1.7fr) minmax(280px, 0.62fr);
}
.nl-pv__visual {
  min-height: 520px;
}
.nl-tour {
  position: relative;
  width: 100%;
  max-width: 850px;
  aspect-ratio: 16 / 10;
  border-radius: 1.25rem;
  overflow: hidden;
  background: #061021;
  border: 1px solid rgba(125, 211, 252, 0.22);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.38);
}
.nl-tour__screen {
  position: absolute;
  inset: 0;
}
.nl-mini-shell {
  height: 100%;
  display: flex;
  align-items: stretch;
  gap: 0.65rem;
  background:
    radial-gradient(circle at 72% 8%, rgba(59, 130, 246, 0.16), transparent 28%),
    linear-gradient(135deg, #071226, #0e1b31);
  color: #e5edf8;
  font-size: 0.72rem;
}
.nl-mini-nav {
  width: 80px;
  margin: 14px 0 14px 14px;
  padding: 14px 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 28px;
  background: rgba(15, 23, 42, 0.78);
  -webkit-backdrop-filter: blur(24px);
          backdrop-filter: blur(24px);
  box-shadow:
    0 18px 54px rgba(0, 0, 0, 0.42),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  display: flex;
  flex-direction: column;
  gap: 0;
  flex: 0 0 auto;
  overflow: visible;
}
.nl-mini-toggle {
  display: none;
  width: 44px;
  height: 44px;
  min-height: 44px;
  flex: 0 0 44px;
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  color: #cbd5e1;
  padding: 0;
}
.nl-mini-brand {
  display: none;
  justify-content: center;
  align-items: center;
  height: 56px;
  margin: 0 0 16px;
}
.nl-mini-brand span {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, rgba(59, 130, 246, 0.32), rgba(59, 130, 246, 0.14));
  border: 1px solid rgba(147, 197, 253, 0.30);
  color: #fff;
  font-weight: 900;
  font-size: 1.05rem;
  line-height: 1;
  padding-bottom: 2px;
  box-shadow:
    0 0 18px rgba(59, 130, 246, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.10);
}
.nl-mini-brand strong {
  display: none;
}
.nl-mini-nav-list {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  overflow: hidden;
}
.nl-mini-nav__item {
  position: relative;
  width: 56px;
  height: 56px;
  flex: 0 0 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: 1.25rem;
  color: rgba(148, 163, 184, 1);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.045);
}
.nl-mini-nav__icon {
  width: 40px;
  height: 40px;
  border-radius: 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  color: rgba(203, 213, 225, 1);
}
.nl-mini-nav__item svg {
  width: 1.5rem;
  height: 1.5rem;
  stroke-width: 2.15;
}
.nl-mini-nav__item b {
  display: none;
}
.nl-mini-nav__item.is-active {
  background: rgba(59, 130, 246, 0.18);
  border-color: rgba(147, 197, 253, 0.35);
  color: #fff;
  box-shadow: 0 0 24px rgba(59, 130, 246, 0.22);
}
.nl-mini-nav__item.is-active .nl-mini-nav__icon {
  background: rgba(59, 130, 246, 0.22);
  border-color: rgba(147, 197, 253, 0.40);
  color: #fff;
  box-shadow:
    0 0 14px rgba(59, 130, 246, 0.30),
    inset 0 1px 0 rgba(255, 255, 255, 0.10);
}
.nl-mini-nav__item.is-tour-hover {
  border-color: rgba(125, 211, 252, 0.62);
  background: rgba(59, 130, 246, 0.24);
  box-shadow:
    0 0 0 1px rgba(56, 189, 248, 0.20),
    0 0 22px rgba(56, 189, 248, 0.28);
}
.nl-mini-nav__item.is-tour-hover .nl-mini-nav__icon {
  color: #fff;
  border-color: rgba(186, 230, 253, 0.48);
  background: rgba(59, 130, 246, 0.28);
}
.nl-mini-nav__item.is-active::before {
  content: '';
  position: absolute;
  left: -0.48rem;
  top: 50%;
  width: 3px;
  height: 1.5rem;
  transform: translateY(-50%);
  border-radius: 999px;
  background: #60a5fa;
  box-shadow: 0 0 12px rgba(96, 165, 250, 0.7);
}
.nl-mini-divider {
  width: 56px;
  height: 1px;
  margin: 4px 0;
  background: rgba(255, 255, 255, 0.10);
  flex: 0 0 auto;
}
.nl-mini-nav-list > .nl-mini-divider:last-child {
  display: none;
}
.nl-mini-night {
  margin-top: auto;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 1.25rem;
  display: grid;
  place-items: center;
  align-self: center;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.nl-mini-main {
  min-width: 0;
  flex: 1 1 auto;
  padding: 0.7rem 0.7rem 0.7rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.nl-mini-top {
  min-height: 2.55rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  border-radius: 0.95rem;
  background: rgba(15, 23, 42, 0.72);
  border: 1px solid rgba(148, 163, 184, 0.14);
}
.nl-mini-scroll {
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.nl-mini-top span {
  color: rgba(186, 230, 253, 0.78);
  font-weight: 800;
}
.nl-mini-empty-dashboard {
  flex: 1 1 auto;
  min-height: 27rem;
  border-radius: 1rem;
  border: 1px solid rgba(125, 211, 252, 0.16);
  background: rgba(8, 15, 31, 0.22);
}
.nl-mini-hero,
.nl-mini-dashboard-hero {
  padding: 1rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.18), rgba(15, 23, 42, 0.88));
  border: 1px solid rgba(125, 211, 252, 0.22);
}
.nl-mini-hero span,
.nl-mini-dashboard-hero span,
.nl-mini-course-head span,
.nl-mini-practice span,
.nl-mini-chat-top span,
.nl-mini-sd-hero span {
  color: #7dd3fc;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.55rem;
  font-weight: 900;
}
.nl-mini-hero h4,
.nl-mini-dashboard-hero h4,
.nl-mini-course-head h4,
.nl-mini-practice h4,
.nl-mini-sd-hero h4,
.nl-mini-pdf__page h4 {
  margin: 0.3rem 0 0;
  color: #fff;
  font-size: 1rem;
}
.nl-mini-dashboard-hero p,
.nl-mini-sd-hero p {
  margin: 0.35rem 0 0;
  color: rgba(226, 232, 240, 0.72);
}
.nl-mini-grid,
.nl-mini-folder-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}
.nl-mini-grid--dense {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.45rem;
}
.nl-mini-card,
.nl-mini-folder-grid div,
.nl-mini-course-card,
.nl-mini-modal,
.nl-mini-practice__panel,
.nl-mini-flashcards,
.nl-mini-chatbot aside,
.nl-mini-chatbot section {
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(15, 23, 42, 0.86);
  border-radius: 0.85rem;
  padding: 0.7rem;
}
.nl-mini-card b,
.nl-mini-folder-grid b,
.nl-mini-course-card b,
.nl-mini-practice b {
  display: block;
  color: #fff;
  font-size: 0.72rem;
}
.nl-mini-card span,
.nl-mini-folder-grid span,
.nl-mini-course-card span,
.nl-mini-flashcards small {
  display: block;
  color: rgba(203, 213, 225, 0.72);
  font-size: 0.62rem;
  line-height: 1.35;
  margin-top: 0.22rem;
}
.nl-mini-course-head {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
}
.nl-mini-sd-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.8rem;
  padding: 1rem;
  border-radius: 1.2rem;
  overflow: hidden;
  border: 1px solid rgba(125, 211, 252, 0.22);
  background:
    radial-gradient(circle at 86% 18%, rgba(14, 165, 233, 0.20), transparent 32%),
    linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(8, 47, 73, 0.55));
}
.nl-mini-sd-hero h4 {
  font-size: 1.35rem;
}
.nl-mini-sd-hero aside {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: stretch;
}
.nl-mini-sem,
.nl-mini-add,
.nl-mini-sd-controls button {
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 0.8rem;
  background: rgba(255, 255, 255, 0.06);
  color: #e2e8f0;
  font-weight: 900;
  padding: 0.55rem 0.7rem;
  font-size: 0.66rem;
}
.nl-mini-add {
  background: #fff;
  color: #0f172a;
}
.nl-mini-sd-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.7rem;
}
.nl-mini-sd-stats b {
  padding: 0.32rem 0.5rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(226, 232, 240, 0.9);
  font-size: 0.58rem;
}
.nl-mini-sd-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.55rem;
}
.nl-mini-sd-controls div {
  border-radius: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.045);
  padding: 0.6rem 0.75rem;
  color: rgba(226, 232, 240, 0.62);
  font-weight: 800;
}
.nl-mini-course-head button,
.nl-mini-practice button {
  border: 0;
  border-radius: 0.75rem;
  background: #38bdf8;
  color: #051224;
  font-weight: 900;
  padding: 0.55rem 0.75rem;
  font-size: 0.68rem;
}
.nl-mini-course-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto 1fr;
  gap: 0.65rem;
}
.nl-mini-course-layout--real {
  grid-template-columns: 1.15fr 0.85fr;
}
.nl-mini-course-card {
  min-height: 7.6rem;
  background:
    radial-gradient(circle at 90% 10%, rgba(59, 130, 246, 0.18), transparent 34%),
    linear-gradient(145deg, rgba(15, 23, 42, 0.94), rgba(8, 47, 73, 0.65));
}
.nl-mini-course-icon {
  width: 2.2rem;
  height: 2.2rem;
  display: grid;
  place-items: center;
  border-radius: 0.75rem;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.25);
  margin-bottom: 0.45rem;
}
.nl-mini-progress {
  height: 0.35rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
  margin-top: 0.75rem;
}
.nl-mini-progress i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #38bdf8, #93c5fd);
}
.nl-mini-statrow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.25rem;
  margin-top: 0.55rem;
}
.nl-mini-statrow em {
  margin: 0;
  padding: 0.24rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.045);
  color: rgba(226, 232, 240, 0.8);
  font-size: 0.5rem;
  font-style: normal;
  text-align: center;
}
.nl-mini-course-card strong {
  display: block;
  margin-top: 0.6rem;
  padding: 0.45rem;
  border-radius: 0.65rem;
  background: #fff;
  color: #0f172a;
  text-align: center;
  font-size: 0.64rem;
}
.nl-mini-course-card em {
  display: inline-flex;
  margin-top: 1rem;
  color: #bae6fd;
  font-style: normal;
  font-weight: 900;
}
.nl-mini-modal {
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.34);
}
.nl-mini-modal span {
  color: #7dd3fc;
  font-weight: 900;
}
.nl-mini-modal b,
.nl-mini-modal small {
  display: block;
  margin-top: 0.35rem;
}
.nl-mini-folder-grid {
  grid-column: 1 / -1;
}
.nl-mini-course-opened {
  grid-column: 1 / -1;
  border-radius: 1rem;
  border: 1px solid rgba(125, 211, 252, 0.22);
  background:
    radial-gradient(circle at 80% 0%, rgba(14, 165, 233, 0.16), transparent 34%),
    rgba(15, 23, 42, 0.88);
  padding: 0.75rem;
}
.nl-mini-course-opened-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.55rem;
}
.nl-mini-course-opened-head b {
  color: #fff;
}
.nl-mini-course-opened-head span {
  color: #7dd3fc;
  font-size: 0.62rem;
  font-weight: 900;
}
.nl-mini-studip {
  height: 100%;
  overflow: hidden;
  color: #e2e8f0;
}
.nl-mini-studip .sd-shell {
  max-width: none;
  margin: 0;
  padding: 0;
}
.nl-mini-studip .sd-hero {
  position: relative;
  padding: 1rem 1.05rem;
  margin-bottom: 0.65rem;
  border-radius: 1.05rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.16), rgba(15, 23, 42, 0.45) 60%, rgba(99, 102, 241, 0.12));
}
.nl-mini-studip .sd-hero-glow {
  position: absolute;
  top: -40%;
  right: -8%;
  width: 55%;
  height: 220%;
  background: radial-gradient(closest-side, rgba(96, 165, 250, 0.28), transparent 70%);
  pointer-events: none;
  filter: blur(8px);
}
.nl-mini-studip .sd-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 9.3rem;
  gap: 0.95rem;
  align-items: center;
}
.nl-mini-studip .sd-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(226, 232, 240, 0.88);
  font-size: 0.55rem;
  font-weight: 800;
}
.nl-mini-studip .sd-hero-eyebrow svg {
  color: rgba(147, 197, 253, 0.95);
}
.nl-mini-studip .sd-hero-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0.55rem 0 0.35rem;
  color: #fff;
  font-size: 1.45rem;
  line-height: 1.05;
  font-weight: 900;
}
.nl-mini-studip .sd-hero-emoji {
  font-size: 1.28rem;
}
.nl-mini-studip .sd-hero-sub {
  margin: 0 0 0.65rem;
  max-width: 29rem;
  color: rgba(226, 232, 240, 0.72);
  font-size: 0.66rem;
  line-height: 1.45;
}
.nl-mini-studip .sd-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
}
.nl-mini-studip .sd-hero-stat {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.34rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(226, 232, 240, 0.9);
  font-size: 0.56rem;
  font-weight: 800;
}
.nl-mini-studip .sd-hero-stat-dot {
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 999px;
  background: #06d6a0;
  box-shadow: 0 0 8px rgba(6, 214, 160, 0.7);
}
.nl-mini-studip .sd-hero-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.nl-mini-studip .sem-btn,
.nl-mini-studip .sd-add-btn,
.nl-mini-studip .sd-layout-btn {
  min-height: 2.3rem;
  border-radius: 0.75rem;
  font-family: inherit;
  font-size: 0.66rem;
  font-weight: 900;
}
.nl-mini-studip .sem-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}
.nl-mini-studip .sd-add-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.38rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid rgba(96, 165, 250, 0.5);
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff;
  box-shadow: 0 10px 28px -8px rgba(37, 99, 235, 0.6);
}
.nl-mini-studip .sd-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.55rem;
  align-items: center;
  margin-bottom: 0.65rem;
}
.nl-mini-studip .sd-search-wrap {
  position: relative;
  min-width: 0;
}
.nl-mini-studip .sd-search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(147, 197, 253, 0.62);
  pointer-events: none;
}
.nl-mini-studip .sd-search-input {
  min-height: 2.65rem;
  padding: 0.75rem 0.75rem 0.75rem 2.15rem;
  border-radius: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: #e2e8f0;
  font-size: 0.66rem;
  font-weight: 800;
  display: flex;
  align-items: center;
}
.nl-mini-studip .nl-mini-type-placeholder {
  color: rgba(226, 232, 240, 0.42);
}
.nl-mini-studip .nl-mini-type-value {
  color: #fff;
}
.nl-mini-studip .nl-mini-type-value:not(:empty)::after {
  content: '';
  display: inline-block;
  width: 1px;
  height: 0.8em;
  margin-left: 2px;
  background: #7dd3fc;
  vertical-align: -0.08em;
  animation: nl-type-caret 0.8s steps(1) infinite;
}
@keyframes nl-type-caret {
  50% { opacity: 0; }
}
.nl-mini-studip .sd-search-drop {
  display: none;
  position: absolute;
  z-index: 12;
  top: calc(100% + 0.35rem);
  left: 0;
  right: 0;
  padding: 0.35rem;
  border-radius: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(15, 23, 42, 0.95);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.42);
}
.nl-mini-search-option {
  padding: 0.5rem 0.65rem;
  border-radius: 0.6rem;
  color: #e2e8f0;
  background: rgba(59, 130, 246, 0.15);
  font-size: 0.62rem;
  font-weight: 850;
}
.nl-mini-studip .sd-layout-btn {
  padding: 0.65rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(226, 232, 240, 0.9);
}
.nl-mini-studip .sd-course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}
.nl-mini-studip .sd-empty-state {
  grid-column: 1 / -1;
  min-height: 8.3rem;
  padding: 1.55rem 1rem;
  text-align: center;
  border-radius: 1.05rem;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.02);
}
.nl-mini-studip .sd-empty-icon {
  font-size: 1.65rem;
  margin-bottom: 0.45rem;
  opacity: 0.7;
}
.nl-mini-studip .sd-empty-title {
  color: #fff;
  font-size: 0.78rem;
  font-weight: 900;
}
.nl-mini-studip .sd-empty-sub {
  max-width: 18rem;
  margin: 0.25rem auto 0;
  color: rgba(226, 232, 240, 0.62);
  font-size: 0.62rem;
  line-height: 1.35;
}
.nl-mini-studip .sd-course-card {
  --sd-card-accent: #2563eb;
  position: relative;
  display: none;
  flex-direction: column;
  gap: 0.65rem;
  min-height: 12rem;
  padding: 1rem 1.05rem;
  border-radius: 1.05rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015)), rgba(15, 23, 42, 0.4);
  color: inherit;
}
.nl-mini-studip .sd-course-card.is-created {
  display: flex;
  animation: nl-course-card-created 520ms ease both;
}
.nl-mini-studip .sd-course-card.is-tour-hover,
.nl-mini-studip .sd-search-input.is-tour-hover,
.nl-mini-studip .sd-add-btn.is-tour-hover,
.nl-mini-studip .sd-course-open-btn.is-tour-hover {
  border-color: rgba(125, 211, 252, 0.62);
  box-shadow:
    0 0 0 1px rgba(56, 189, 248, 0.20),
    0 0 22px rgba(56, 189, 248, 0.28);
}
.nl-mini-studip .sd-course-bar {
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--sd-card-accent), rgba(96, 165, 250, 0.55));
}
.nl-mini-studip .sd-del-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}
.nl-mini-studip .sd-course-head {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding-right: 2rem;
}
.nl-mini-studip .sd-course-icon {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border-radius: 0.7rem;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.28);
}
.nl-mini-studip .sd-course-name {
  margin: 0;
  color: #fff;
  font-size: 0.82rem;
  line-height: 1.2;
  font-weight: 900;
}
.nl-mini-studip .sd-course-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.38rem;
}
.nl-mini-studip .sd-course-chip {
  padding: 0.26rem 0.48rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
  color: rgba(226, 232, 240, 0.82);
  font-size: 0.55rem;
  font-weight: 800;
}
.nl-mini-studip .sd-course-empty-msg {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem;
  border-radius: 0.8rem;
  border: 1px dashed rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.02);
}
.nl-mini-studip .sd-course-empty-msg-title {
  color: #fff;
  font-size: 0.66rem;
  font-weight: 850;
}
.nl-mini-studip .sd-course-empty-msg-sub {
  margin-top: 0.18rem;
  color: rgba(226, 232, 240, 0.6);
  font-size: 0.58rem;
  line-height: 1.35;
}
.nl-mini-studip .sd-course-open-btn {
  width: 100%;
  margin-top: auto;
  padding: 0.65rem;
  border: 0;
  border-radius: 0.75rem;
  background: #fff;
  color: #0f172a;
  font-size: 0.66rem;
  font-weight: 900;
}
@keyframes nl-course-card-created {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.nl-mini-course-view {
  height: 100%;
  overflow: hidden;
  color: #e2e8f0;
}
.nl-mini-course-view .co-inner {
  width: 100%;
  padding: 0;
}
.nl-mini-course-view .co-topnav {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.55rem;
  align-items: center;
  margin-bottom: 0.55rem;
}
.nl-mini-course-view .co-back-btn,
.nl-mini-course-view .co-study-btn,
.nl-mini-course-view .co-tool-btn {
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(255, 255, 255, 0.05);
  color: rgba(226, 232, 240, 0.9);
  border-radius: 999px;
  font-size: 0.6rem;
  font-weight: 900;
  min-height: 1.9rem;
  padding: 0.38rem 0.65rem;
}
.nl-mini-course-view .co-topnav-title {
  min-width: 0;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 950;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nl-mini-course-view .co-hero {
  position: relative;
  padding: 0.85rem;
  margin-bottom: 0.55rem;
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.16), rgba(15, 23, 42, 0.35) 65%), rgba(15, 23, 42, 0.55);
}
.nl-mini-course-view .co-hero-glow {
  position: absolute;
  inset: -35% -12% auto auto;
  width: 45%;
  height: 170%;
  background: radial-gradient(closest-side, rgba(96, 165, 250, 0.26), transparent 70%);
}
.nl-mini-course-view .co-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 14rem;
  gap: 0.85rem;
  align-items: center;
}
.nl-mini-course-view .co-hero-title {
  margin: 0 0 0.25rem;
  color: #fff;
  font-size: 1.15rem;
  line-height: 1.1;
  font-weight: 950;
}
.nl-mini-course-view .co-hero-sub {
  margin: 0;
  color: rgba(226, 232, 240, 0.68);
  font-size: 0.62rem;
  line-height: 1.35;
}
.nl-mini-course-view .co-hero-progress {
  padding: 0.65rem;
  border-radius: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.035);
}
.nl-mini-course-view .co-hero-progress-head {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.58rem;
  font-weight: 900;
  color: rgba(226, 232, 240, 0.86);
}
.nl-mini-course-view .co-hero-progress-track,
.nl-mini-course-view .co-upmodal-bar-track {
  height: 0.34rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
  margin-top: 0.42rem;
}
.nl-mini-course-view .co-hero-progress-fill,
.nl-mini-course-view .co-upmodal-bar-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb, #06d6a0);
  transition: width 0.35s ease;
}
.nl-mini-course-view .co-hero-progress-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.25rem;
  margin-top: 0.5rem;
}
.nl-mini-course-view .co-hero-stat-pill {
  padding: 0.22rem 0.28rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: rgba(226, 232, 240, 0.75);
  font-size: 0.49rem;
  text-align: center;
  font-weight: 850;
}
.nl-mini-course-view .co-card {
  padding: 0;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(15, 23, 42, 0.46);
  overflow: hidden;
}
.nl-mini-course-view .co-course-tabs {
  display: flex;
  gap: 0.35rem;
  padding: 0.48rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.nl-mini-course-view .co-course-tab {
  border: 1px solid transparent;
  background: transparent;
  color: rgba(226, 232, 240, 0.62);
  border-radius: 999px;
  padding: 0.42rem 0.72rem;
  font-size: 0.6rem;
  font-weight: 900;
}
.nl-mini-course-view .co-course-tab.active {
  color: #fff;
  border-color: rgba(59, 130, 246, 0.45);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.32), rgba(14, 165, 233, 0.22));
}
.nl-mini-course-view .co-files-inner-card {
  padding: 0.75rem;
}
.nl-mini-course-view .co-panel-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: start;
}
.nl-mini-course-view .co-panel-title {
  margin: 0;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 950;
}
.nl-mini-course-view .co-panel-sub {
  margin: 0.18rem 0 0;
  color: rgba(226, 232, 240, 0.58);
  font-size: 0.58rem;
}
.nl-mini-course-view .co-files-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: flex-end;
  max-width: 23rem;
}
.nl-mini-course-view .co-upload-btn {
  border-color: rgba(6, 214, 160, 0.35);
  background: rgba(6, 214, 160, 0.1);
  color: rgba(134, 239, 172, 0.95);
}
.nl-mini-course-view .co-files-search-row {
  margin: 0.65rem 0;
}
.nl-mini-course-view .co-files-search-wrap {
  position: relative;
}
.nl-mini-course-view .co-files-search-icon {
  position: absolute;
  left: 0.7rem;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(147, 197, 253, 0.55);
}
.nl-mini-course-view .co-files-search-input {
  min-height: 2.25rem;
  display: flex;
  align-items: center;
  padding: 0.6rem 0.75rem 0.6rem 2rem;
  border-radius: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: rgba(226, 232, 240, 0.42);
  font-size: 0.62rem;
  font-weight: 800;
}
.nl-mini-course-view .co-separate-files {
  border-radius: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.025);
  padding: 0.68rem;
}
.nl-mini-course-view .co-separate-files-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.nl-mini-course-view .co-separate-files-title {
  color: #fff;
  font-size: 0.68rem;
  font-weight: 900;
}
.nl-mini-course-view .co-separate-files-sub,
.nl-mini-course-view .co-files-loading {
  color: rgba(226, 232, 240, 0.55);
  font-size: 0.58rem;
}
.nl-mini-course-view .co-files-loading {
  padding: 0.75rem 0.25rem;
}
.nl-mini-course-view .co-file {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 0.78rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(6, 214, 160, 0.32);
  background: rgba(6, 214, 160, 0.08);
}
.nl-mini-course-view .co-file.is-visible {
  display: flex;
  animation: nl-course-card-created 520ms ease both;
}
.nl-mini-course-view .co-file-name {
  flex: 1;
  min-width: 0;
  color: #fff;
  font-size: 0.66rem;
  font-weight: 900;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nl-mini-course-view .co-file-meta {
  color: rgba(226, 232, 240, 0.62);
  font-size: 0.56rem;
  font-weight: 800;
}
.nl-file-picker {
  position: absolute;
  z-index: 8;
  right: 1.5rem;
  top: 6.1rem;
  width: 20rem;
  border-radius: 0.95rem;
  border: 1px solid rgba(147, 197, 253, 0.24);
  background: rgba(8, 15, 31, 0.96);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.46);
  padding: 0.65rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px) scale(0.98);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.nl-file-picker.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.nl-file-picker__bar {
  display: flex;
  justify-content: space-between;
  color: #e2e8f0;
  font-size: 0.62rem;
  margin-bottom: 0.55rem;
}
.nl-file-picker__bar span {
  color: rgba(226, 232, 240, 0.55);
}
.nl-file-picker__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.45rem;
  align-items: center;
  padding: 0.55rem;
  border-radius: 0.7rem;
  background: rgba(59, 130, 246, 0.14);
  border: 1px solid rgba(96, 165, 250, 0.30);
}
.nl-file-picker__row strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #fff;
  font-size: 0.62rem;
}
.nl-file-picker__row em {
  color: rgba(226, 232, 240, 0.6);
  font-style: normal;
  font-size: 0.55rem;
}
.nl-file-picker button {
  width: 100%;
  margin-top: 0.55rem;
  padding: 0.55rem;
  border: 0;
  border-radius: 0.7rem;
  background: #3b82f6;
  color: #fff;
  font-size: 0.62rem;
  font-weight: 900;
}
.nl-mini-upload-modal {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: rgba(2, 6, 23, 0.48);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.nl-mini-upload-modal.is-visible {
  opacity: 1;
}
.nl-tour--upload-flow .nl-upload-popover {
  z-index: 14;
}
.nl-tour--upload-flow .nl-upload-cursor {
  z-index: 15;
}
.nl-mini-upload-modal .co-upmodal {
  width: min(32rem, 92%);
  border-radius: 1rem;
  border: 1px solid rgba(147, 197, 253, 0.20);
  background: rgba(2, 6, 23, 0.88);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.70), 0 0 34px rgba(59, 130, 246, 0.14);
  overflow: hidden;
}
.nl-mini-upload-modal .co-upmodal-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nl-mini-upload-modal .co-upmodal-head-icon {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 0.65rem;
  color: #93c5fd;
  background: rgba(37, 99, 235, 0.18);
}
.nl-mini-upload-modal .co-upmodal-head-title {
  margin: 0;
  color: #fff;
  font-size: 0.88rem;
}
.nl-mini-upload-modal .co-upmodal-head-sub,
.nl-mini-upload-modal .co-upmodal-foot p {
  margin: 0.12rem 0 0;
  color: #94a3b8;
  font-size: 0.62rem;
}
.nl-mini-upload-modal .co-upmodal-close {
  margin-left: auto;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(255, 255, 255, 0.04);
  color: #cbd5e1;
}
.nl-mini-upload-modal .co-upmodal-body {
  padding: 1rem;
}
.nl-mini-upload-modal .co-upmodal-hero {
  text-align: center;
}
.nl-mini-upload-modal .co-upmodal-hero h2 {
  margin: 0.5rem 0 0.18rem;
  color: #fff;
  font-size: 0.95rem;
}
.nl-mini-upload-modal .co-upmodal-hero p {
  margin: 0;
  color: #94a3b8;
  font-size: 0.66rem;
}
.nl-mini-upload-file {
  display: inline-flex;
  padding: 0.36rem 0.58rem;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.14);
  color: #dbeafe;
  font-size: 0.6rem;
  font-weight: 900;
}
.nl-mini-upload-modal .co-upmodal-stages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.55rem;
  margin-top: 0.85rem;
}
.nl-mini-upload-modal .co-upmodal-stage {
  text-align: center;
  padding: 0.65rem 0.4rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}
.nl-mini-upload-modal .co-upmodal-stage[data-state="active"] {
  border-color: rgba(99, 102, 241, 0.45);
  background: rgba(99, 102, 241, 0.10);
}
.nl-mini-upload-modal .co-upmodal-stage[data-state="complete"] {
  border-color: rgba(34, 197, 94, 0.40);
  background: rgba(34, 197, 94, 0.08);
}
.nl-mini-upload-modal .co-upmodal-stage-title {
  margin: 0.2rem 0 0;
  color: #e2e8f0;
  font-size: 0.66rem;
  font-weight: 900;
}
.nl-mini-upload-modal .co-upmodal-stage-status {
  margin: 0.12rem 0 0;
  color: #94a3b8;
  font-size: 0.55rem;
}
.nl-mini-upload-modal .co-upmodal-bars {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 0.85rem;
}
.nl-mini-upload-modal .co-upmodal-bar-label {
  display: flex;
  justify-content: space-between;
  color: #cbd5e1;
  font-size: 0.6rem;
}
.nl-mini-upload-modal .co-upmodal-foot {
  padding: 0.75rem 1rem 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}
.nl-mini-course-view .is-tour-hover,
.nl-file-picker .is-tour-hover,
.nl-mini-upload-modal .is-tour-hover {
  outline: 1px solid rgba(125, 211, 252, 0.70);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.20), 0 0 22px rgba(56, 189, 248, 0.28);
}
.nl-mini-upload-drop {
  margin-top: 0.6rem;
  padding: 0.7rem;
  border-radius: 0.8rem;
  border: 1px dashed rgba(125, 211, 252, 0.36);
  background: rgba(56, 189, 248, 0.08);
  color: #bae6fd;
  text-align: center;
  font-weight: 900;
  font-size: 0.68rem;
}
.nl-mini-pdf {
  position: relative;
  min-height: 390px;
  border-radius: 1rem;
  overflow: hidden;
  background: #030712;
  border: 1px solid rgba(148, 163, 184, 0.15);
}
.nl-mini-pdf__toolbar {
  display: flex;
  justify-content: space-between;
  padding: 0.55rem 0.75rem;
  background: rgba(15, 23, 42, 0.96);
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
}
.nl-mini-pdf__page {
  position: absolute;
  left: 1.1rem;
  top: 3.2rem;
  bottom: 1.1rem;
  right: 13.3rem;
  padding: 1.2rem;
  background: #f8fafc;
  color: #111827;
  border-radius: 0.55rem;
  text-align: center;
}
.nl-mini-pdf__page p {
  color: #334155;
}
.nl-mini-formula {
  margin-top: 1rem;
  color: #dc2626;
  font-size: 1rem;
  font-family: Georgia, serif;
}
.nl-mini-rail {
  position: absolute;
  right: 0.65rem;
  top: 3.2rem;
  width: 4rem;
  display: grid;
  gap: 0.45rem;
}
.nl-mini-rail button,
.nl-mini-chatbot aside button {
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(15, 23, 42, 0.9);
  color: #cbd5e1;
  border-radius: 0.65rem;
  padding: 0.45rem;
  font-weight: 900;
  font-size: 0.58rem;
}
.nl-mini-rail button.is-active,
.nl-mini-chatbot aside button.is-active {
  background: #2563eb;
  color: #fff;
}
.nl-mini-ai-drawer {
  position: absolute;
  right: 5.2rem;
  top: 3.2rem;
  bottom: 1.1rem;
  width: 12rem;
  border-radius: 0.9rem;
  padding: 0.75rem;
  background: linear-gradient(180deg, rgba(15, 27, 48, 0.98), rgba(8, 15, 31, 0.98));
  border: 1px solid rgba(125, 211, 252, 0.25);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.nl-mini-ai-drawer span {
  color: #7dd3fc;
  font-weight: 900;
}
.nl-mini-ai-drawer p,
.nl-mini-ai-drawer div {
  margin: 0;
  border-radius: 0.65rem;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.55rem;
  color: #dbeafe;
  line-height: 1.35;
}
.nl-mini-practice,
.nl-mini-chatbot {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  min-height: 360px;
}
.nl-mini-step {
  margin-top: 0.45rem;
  padding: 0.45rem;
  border-radius: 0.55rem;
  background: rgba(255, 255, 255, 0.055);
  color: #cbd5e1;
}
.nl-mini-step.is-active {
  background: rgba(56, 189, 248, 0.15);
  color: #fff;
}
.nl-mini-practice button {
  margin-top: 0.7rem;
}
.nl-mini-flashcard {
  margin-top: 0.55rem;
  border-radius: 0.75rem;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(125, 211, 252, 0.22);
  padding: 0.7rem;
}
.nl-mini-flashcard p {
  margin: 0.25rem 0 0;
  color: #e0f2fe;
  line-height: 1.35;
}
.nl-mini-chatbot aside,
.nl-mini-chatbot section {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.nl-mini-chat-top {
  display: flex;
  justify-content: space-between;
}
.nl-mini-msg {
  max-width: 86%;
  border-radius: 0.85rem;
  padding: 0.65rem;
  line-height: 1.35;
}
.nl-mini-msg.user {
  align-self: flex-end;
  background: #38bdf8;
  color: #082f49;
  font-weight: 800;
}
.nl-mini-msg.bot {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
}
.nl-mini-msg small {
  display: block;
  margin-top: 0.5rem;
  color: #93c5fd;
}
.nl-mini-composer {
  margin-top: auto;
  border-radius: 0.8rem;
  padding: 0.65rem;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.16);
  color: #94a3b8;
}
.nl-tour-cursor {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1.05rem;
  height: 1.05rem;
  z-index: 8;
  transform: translate(-50%, -50%);
  pointer-events: none;
  filter: drop-shadow(0 8px 12px rgba(0, 0, 0, 0.45));
}
.nl-tour-cursor::before {
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  border-left: 0.95rem solid #fff;
  border-top: 0.6rem solid transparent;
  border-bottom: 0.6rem solid transparent;
  transform: rotate(-22deg);
}
.nl-tour-cursor::after {
  content: '';
  position: absolute;
  left: 0.34rem;
  top: 0.32rem;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 999px;
  background: #38bdf8;
  box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.5);
  animation: nl-tour-pulse 1.6s ease-out infinite;
}
.nl-shell-cursor {
  position: absolute;
  left: 0;
  top: 0;
  width: 1.05rem;
  height: 1.05rem;
  z-index: 9;
  pointer-events: none;
  transform: translate(0, 0);
  transition: transform 560ms cubic-bezier(0.2, 0.8, 0.2, 1);
  filter: drop-shadow(0 10px 14px rgba(0, 0, 0, 0.48));
}
.nl-shell-cursor::before {
  content: '';
  position: absolute;
  width: 0;
  height: 0;
  border-left: 0.95rem solid #fff;
  border-top: 0.6rem solid transparent;
  border-bottom: 0.6rem solid transparent;
  transform: rotate(-22deg);
}
.nl-shell-cursor::after {
  content: '';
  position: absolute;
  left: 0.34rem;
  top: 0.32rem;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 999px;
  background: #38bdf8;
  box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.5);
  animation: nl-tour-pulse 1.6s ease-out infinite;
}
.nl-shell-popover {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 8;
  width: min(18rem, calc(100% - 8rem));
  min-height: 3.6rem;
  padding: 0.6rem 0.7rem;
  border-radius: 0.85rem;
  color: #e0f2fe;
  background: rgba(8, 15, 31, 0.94);
  border: 1px solid rgba(125, 211, 252, 0.28);
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.34);
  pointer-events: none;
  transform: translate(0, 0);
  transition: transform 560ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.nl-shell-popover strong {
  display: block;
  margin-bottom: 0.18rem;
  font-size: 0.76rem;
  line-height: 1.15;
  font-weight: 900;
}
.nl-shell-popover span {
  display: block;
  color: rgba(203, 213, 225, 0.94);
  font-size: 0.66rem;
  line-height: 1.3;
  font-weight: 750;
}
.nl-tour-call {
  position: absolute;
  z-index: 7;
  padding: 0.32rem 0.55rem;
  border-radius: 999px;
  background: rgba(8, 15, 31, 0.94);
  border: 1px solid rgba(125, 211, 252, 0.28);
  color: #e0f2fe;
  font-size: 0.62rem;
  font-weight: 900;
  opacity: 0;
  transform: translate(1.15rem, -50%);
  animation: nl-tour-call 1.7s ease both;
  white-space: nowrap;
}
.nl-tour-click {
  position: absolute;
  z-index: 6;
  width: 1.9rem;
  height: 1.9rem;
  margin: -0.95rem 0 0 -0.95rem;
  border-radius: 999px;
  border: 2px solid rgba(56, 189, 248, 0.88);
  opacity: 0;
  pointer-events: none;
  animation: nl-tour-click 0.72s ease-out both;
}
.tour-cursor-pages { animation: nl-tour-pages 8.4s ease-in-out infinite; }
.tour-cursor-courses { animation: nl-tour-courses 7.4s ease-in-out infinite; }
.tour-cursor-rail { animation: nl-tour-rail 7.4s ease-in-out infinite; }
.tour-cursor-practice { animation: nl-tour-practice 6.6s ease-in-out infinite; }
.tour-cursor-chatbot { animation: nl-tour-chatbot 7s ease-in-out infinite; }

.nl-tour--pages .nl-tour-call {
  animation: nl-tour-step-call 8.4s ease-in-out infinite both;
}
.nl-tour--pages .nl-tour-click {
  width: 3.5rem;
  height: 3.5rem;
  margin: -1.75rem 0 0 -1.75rem;
  border-color: rgba(56, 189, 248, 0.92);
  animation: nl-tour-step-click 8.4s ease-in-out infinite both;
}

.nl-tour--courses .nl-mini-add {
  animation: nl-tour-target 1.1s ease 0s both;
}
.nl-tour--courses .nl-mini-modal {
  opacity: 0;
  transform: translateY(8px) scale(0.96);
  animation: nl-course-modal 2.1s ease 0.95s both;
}
.nl-tour--courses .nl-mini-course-card {
  transform-origin: center;
  animation: nl-course-card-open 1.15s ease 2.45s both;
}
.nl-tour--courses .nl-mini-course-opened {
  opacity: 0;
  transform: translateY(14px);
  animation: nl-course-workspace-in 0.75s ease 3.2s both;
}
.nl-tour--courses .nl-mini-folder-grid div {
  opacity: 0;
  transform: translateY(10px);
  animation: nl-course-workspace-in 0.55s ease both;
}
.nl-tour--courses .nl-mini-folder-grid div:nth-child(1) { animation-delay: 3.85s; }
.nl-tour--courses .nl-mini-folder-grid div:nth-child(2) { animation-delay: 4.15s; }
.nl-tour--courses .nl-mini-folder-grid div:nth-child(3) { animation-delay: 4.45s; }
.nl-tour--courses .nl-mini-upload-drop {
  opacity: 0;
  transform: scale(0.96);
  animation: nl-course-upload-in 0.75s ease 5.15s both;
}
.nl-tour--rail .nl-mini-rail button {
  animation: nl-tour-target 0.85s ease both;
}
.nl-tour--rail .nl-mini-rail button:nth-child(1) { animation-delay: 0s; }
.nl-tour--rail .nl-mini-rail button:nth-child(2) { animation-delay: 1.4s; }
.nl-tour--rail .nl-mini-rail button:nth-child(3) { animation-delay: 2.8s; }
.nl-tour--rail .nl-mini-rail button:nth-child(4) { animation-delay: 4.2s; }
.nl-tour--rail .nl-mini-ai-drawer {
  opacity: 0;
  transform: translateX(14px);
  animation: nl-course-workspace-in 0.75s ease 0.55s both;
}
.nl-tour--rail .nl-mini-ai-drawer div:last-child {
  animation: nl-tour-target 1.4s ease 5.3s both;
}
.nl-tour--practice .nl-mini-practice button {
  animation: nl-tour-target 1.2s ease 2.4s both;
}
.nl-tour--practice .nl-mini-step {
  opacity: 0;
  transform: translateY(8px);
  animation: nl-course-workspace-in 0.45s ease both;
}
.nl-tour--practice .nl-mini-step:nth-of-type(1) { animation-delay: 2.8s; }
.nl-tour--practice .nl-mini-step:nth-of-type(2) { animation-delay: 3.05s; }
.nl-tour--practice .nl-mini-step:nth-of-type(3) { animation-delay: 3.3s; }
.nl-tour--practice .nl-mini-step:nth-of-type(4) { animation-delay: 3.55s; }
.nl-mini-quiz-ready {
  opacity: 0;
  margin-top: 0.5rem;
  padding: 0.45rem;
  border-radius: 0.65rem;
  color: #bbf7d0;
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(74, 222, 128, 0.28);
  font-weight: 900;
  animation: nl-course-workspace-in 0.55s ease 4.15s both;
}
.nl-tour--practice .nl-mini-flashcards {
  opacity: 0;
  transform: translateY(12px);
  animation: nl-course-workspace-in 0.65s ease 4.25s both;
}
.nl-tour--chatbot .nl-mini-chatbot aside button.is-active {
  animation: nl-tour-target 1.1s ease 0s both;
}
.nl-tour--chatbot .nl-mini-msg.user {
  opacity: 0;
  transform: translateY(10px);
  animation: nl-course-workspace-in 0.55s ease 1.75s both;
}
.nl-tour--chatbot .nl-mini-msg.bot {
  opacity: 0;
  transform: translateY(10px);
  animation: nl-course-workspace-in 0.7s ease 3.25s both;
}
.nl-tour--chatbot .nl-mini-composer {
  animation: nl-tour-target 1s ease 1.55s both;
}

@keyframes nl-tour-pulse {
  0% { box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.45); }
  70% { box-shadow: 0 0 0 12px rgba(56, 189, 248, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}
@keyframes nl-tour-call {
  0%, 100% { opacity: 0; transform: translateY(6px); }
  18%, 82% { opacity: 1; transform: translateY(0); }
}
@keyframes nl-tour-click {
  0% { opacity: 0; transform: scale(0.55); }
  20% { opacity: 1; transform: scale(0.75); }
  100% { opacity: 0; transform: scale(1.8); }
}
@keyframes nl-tour-step-call {
  0%, 17%, 100% { opacity: 0; transform: translate(1rem, -50%) scale(0.96); }
  3%, 13% { opacity: 1; transform: translate(1.25rem, -50%) scale(1); }
}
@keyframes nl-tour-step-click {
  0%, 17%, 100% { opacity: 0; transform: scale(0.92); }
  3%, 12% { opacity: 1; transform: scale(1); }
  16% { opacity: 0; transform: scale(1.14); }
}
@keyframes nl-tour-target {
  0%, 100% { box-shadow: none; transform: none; }
  45% { box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.18), 0 0 24px rgba(56, 189, 248, 0.32); transform: translateY(-1px); }
}
@keyframes nl-course-modal {
  0% { opacity: 0; transform: translateY(8px) scale(0.96); }
  18%, 72% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-6px) scale(0.98); }
}
@keyframes nl-course-card-open {
  0%, 100% { transform: none; box-shadow: none; }
  45% { transform: scale(1.025); box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.18), 0 22px 40px rgba(0, 0, 0, 0.36); }
}
@keyframes nl-course-workspace-in {
  to { opacity: 1; transform: translateY(0) translateX(0) scale(1); }
}
@keyframes nl-course-upload-in {
  to { opacity: 1; transform: scale(1); }
}
@keyframes nl-tour-pages {
  0%, 13% { left: 6.5%; top: 10.9%; }
  17%, 30% { left: 6.5%; top: 23%; }
  34%, 47% { left: 6.5%; top: 35%; }
  51%, 64% { left: 6.5%; top: 47.1%; }
  68%, 81% { left: 6.5%; top: 59.1%; }
  85%, 100% { left: 6.5%; top: 71.2%; }
}
@keyframes nl-tour-courses {
  0%, 16% { left: 77%; top: 17%; }
  22%, 38% { left: 43%; top: 39%; }
  44%, 58% { left: 29%; top: 65%; }
  64%, 78% { left: 58%; top: 55%; }
  86%, 100% { left: 71%; top: 73%; }
}
@keyframes nl-tour-rail {
  0%, 16% { left: 93.5%; top: 24%; }
  22%, 38% { left: 93.5%; top: 30.7%; }
  44%, 58% { left: 93.5%; top: 37.2%; }
  64%, 78% { left: 93.5%; top: 43.7%; }
  86%, 100% { left: 79%; top: 61%; }
}
@keyframes nl-tour-practice {
  0%, 20% { left: 17%; top: 31%; }
  28%, 48% { left: 40%; top: 33%; }
  56%, 74% { left: 75%; top: 32%; }
  84%, 100% { left: 29%; top: 72%; }
}
@keyframes nl-tour-chatbot {
  0%, 22% { left: 22%; top: 19%; }
  30%, 52% { left: 63%; top: 75%; }
  60%, 82% { left: 57%; top: 45%; }
  90%, 100% { left: 76%; top: 18%; }
}

/* Screen-reader-only live region */
.nl-pv__sr {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes nl-pv-fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes nl-pv-pop {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes nl-pv-countdown {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* Responsive: stack visual over copy */
@media (max-width: 720px) {
  .nl-pv {
    align-items: flex-start;
    overflow-y: auto;
  }
  .nl-pv__dialog {
    max-height: none;
  }
  .nl-pv__stage {
    grid-template-columns: 1fr;
    align-content: start;
    overflow-y: auto;
  }
  .nl-pv__visual {
    min-height: 300px;
  }
  .nl-tour {
    aspect-ratio: 4 / 3;
  }
  .nl-mini-shell {
    gap: 0.45rem;
    font-size: 0.62rem;
  }
  .nl-mini-nav {
    width: 3.85rem;
    margin: 0.45rem 0 0.45rem 0.45rem;
    padding: 0.42rem 0.28rem;
    border-radius: 1.35rem;
  }
  .nl-mini-nav__item {
    width: 2.7rem;
    height: 2.7rem;
    flex-basis: 2.7rem;
    border-radius: 0.95rem;
  }
  .nl-mini-toggle,
  .nl-mini-night {
    width: 2.7rem;
    height: 2.7rem;
  }
  .nl-mini-brand {
    height: 2.8rem;
  }
  .nl-mini-brand span {
    width: 2.1rem;
    height: 2.1rem;
  }
  .nl-mini-divider {
    width: 2.7rem;
  }
  .nl-mini-main {
    padding: 0.45rem 0.45rem 0.45rem 0;
  }
  .nl-mini-sd-hero,
  .nl-mini-sd-controls,
  .nl-mini-course-layout--real {
    grid-template-columns: 1fr;
  }
  .nl-mini-grid,
  .nl-mini-folder-grid,
  .nl-mini-practice,
  .nl-mini-chatbot {
    grid-template-columns: 1fr;
  }
  .nl-mini-pdf__page {
    right: 6rem;
  }
  .nl-mini-ai-drawer {
    display: none;
  }
  .nl-mini-rail {
    width: 4.5rem;
  }
  .nl-tour-call {
    display: none;
  }
  .nl-pv__choices {
    grid-template-columns: 1fr;
  }
  .nl-pv__dot-label {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nl-pv__backdrop,
  .nl-pv__dialog {
    animation: none;
  }
  .nl-pv__stage {
    transition: none;
  }
  .nl-pv__dot.is-active.is-playing .nl-pv__dot-pip::after {
    animation: none;
  }
  .nl-shell-cursor,
  .nl-shell-popover {
    transition: none;
  }
  .nl-shell-cursor::after {
    animation: none;
  }
}

/* Performance polish: keep the look, remove the live paint work that made
   scrolling and the preview feel heavy on real devices. */
body.nl-body .nl-orb {
  animation: none;
  filter: none;
  opacity: 0.16;
  transform: none;
  will-change: auto;
}

body.nl-body .nl-hero__halo {
  filter: none;
  opacity: 0.42;
  transform: none !important;
}

body.nl-body .nl-glass,
body.nl-body .nl-nav,
body.nl-body .nl-nav__mobile,
body.nl-body .nl-tutor-preview,
body.nl-body .nl-paths__detail,
body.nl-body .nl-price-card,
body.nl-body .nl-pv__backdrop,
body.nl-body .nl-pv__dialog,
body.nl-body .nl-pv__mock {
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
}

body.nl-body .nl-pv__backdrop {
  background: rgba(2, 6, 23, 0.9);
}

body.nl-body .nl-pv__dialog,
.nl-pv .nl-pv__dialog {
  background:
    radial-gradient(circle at 18% 0%, rgba(56, 189, 248, 0.14), transparent 38%),
    linear-gradient(145deg, #101827 0%, #132235 58%, #0b1322 100%) !important;
  border-color: rgba(148, 163, 184, 0.24);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.55);
}

body.nl-body .nl-card__glow,
body.nl-body .nl-tutor-preview__glow-a,
body.nl-body .nl-tutor-preview__glow-b {
  filter: none;
  opacity: 0.24;
}

body.nl-body .nl-reveal {
  transition-duration: 0.28s;
  will-change: auto;
}

body.nl-body .nl-pv__stage {
  transition-duration: 0.12s;
}

body.nl-body .nl-pv__dot.is-active.is-playing .nl-pv__dot-pip::after {
  animation: none;
}

/* ===================== Back-to-top button =====================
   Injected by new-landing.js. Fixed to the bottom-right; fades in once
   the user has scrolled past the hero. Sits above page content but below
   the preview modal (z-index 2000). */
body.nl-body .nl-to-top {
  position: fixed;
  right: clamp(16px, 4vw, 36px);
  bottom: clamp(16px, 4vw, 32px);
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 999px;
  border: 1px solid var(--nl-white-15);
  background: linear-gradient(135deg, var(--nl-sky-500), var(--nl-sky-600));
  color: #ffffff;
  box-shadow: 0 14px 36px rgba(2, 6, 23, 0.5);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.9);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0s linear 0.22s,
    background 0.18s ease;
}
body.nl-body .nl-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  transition: opacity 0.22s ease, transform 0.22s ease, background 0.18s ease;
}
body.nl-body .nl-to-top:hover {
  background: linear-gradient(135deg, var(--nl-sky-400), var(--nl-sky-500));
  transform: translateY(-2px) scale(1.04);
}
body.nl-body .nl-to-top:active {
  transform: translateY(0) scale(0.96);
}
body.nl-body .nl-to-top:focus-visible {
  outline: 2px solid var(--nl-sky-200);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce) {
  body.nl-body .nl-to-top {
    transition: opacity 0.22s ease, visibility 0s linear 0.22s;
    transform: none;
  }
  body.nl-body .nl-to-top.is-visible {
    transform: none;
  }
  body.nl-body .nl-to-top:hover {
    transform: none;
  }
}