/* =========================================================
   GLOBAL DESIGN SYSTEM
   ========================================================= */

:root {
  --color-accent: #f8a877;
  --color-dark: #2d3250;
  --color-secondary: #676f8d;
  --color-surface: #f8f7f4;
  --color-soft: #f1eee8;
  --color-panel: #424769;
  --color-white: #ffffff;

  --font-sans:
    "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-serif: "Source Serif 4", Georgia, serif;

  --container: 1180px;
  --radius-lg: 30px;

  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-white);
  color: var(--color-dark);
  font-family: var(--font-sans);
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

a {
  color: inherit;
}

main,
section {
  width: 100%;
}

section {
  isolation: isolate;
}

/* =========================================================
   01. HERO
   ========================================================= */

.teacher-hero {
  position: relative;
  overflow: hidden;
  padding: 120px 25px;
  color: var(--color-white);
  background:
    radial-gradient(
      circle at 80% 25%,
      rgba(248, 168, 119, 0.18),
      transparent 35%
    ),
    var(--color-dark);
}

.hero-container {
  width: min(var(--container), 100%);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  align-items: center;
  gap: 60px;
}

.hero-label,
.teacher-label,
.research-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.2em;
}

.hero-label,
.teacher-label,
.research-eyebrow {
  color: var(--color-accent);
}

.hero-label::before,
.teacher-label::before,
.research-eyebrow::before {
  content: "";
  width: 35px;
  height: 1px;
  flex: 0 0 auto;
  background: currentColor;
}

.hero-content h1 {
  margin: 28px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(45px, 5vw, 72px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--color-white);
}

.hero-content h1 span {
  display: block;
  color: var(--color-accent);
  font-style: italic;
}

.hero-content p {
  max-width: 520px;
  margin: 30px 0;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 35px;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 52px;
  padding: 16px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  transition:
    transform 0.35s var(--ease),
    background-color 0.35s ease,
    border-color 0.35s ease;
}

.primary-btn {
  background: var(--color-accent);
  color: var(--color-dark);
}

.primary-btn:hover {
  transform: translateY(-5px);
}

.secondary-btn {
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--color-white);
}

.secondary-btn:hover {
  background: var(--color-panel);
}

.hero-stats {
  display: flex;
  gap: 45px;
  margin-top: 65px;
}

.hero-stats div {
  display: flex;
  flex-direction: column;
}

.hero-stats strong {
  font-family: var(--font-serif);
  font-size: 32px;
}

.hero-stats span {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}

.hero-visual {
  position: relative;
  height: 620px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.teacher-image {
  position: relative;
  z-index: 3;
  width: 420px;
  height: 520px;
  overflow: hidden;
  border-radius: 220px 220px 35px 35px;
  border: 1px solid rgba(248, 168, 119, 0.45);
}

.teacher-image img,
.teacher-photo img,
.portrait-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-ring {
  position: absolute;
  width: 470px;
  height: 570px;
  border: 1px dashed rgba(248, 168, 119, 0.35);
  border-radius: 50%;
  animation: rotate-ring 25s linear infinite;
}

.experience-card {
  position: absolute;
  z-index: 5;
  left: 30px;
  bottom: 70px;
  padding: 22px 28px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 22px;
  background: var(--color-panel);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
}

.experience-card span {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--color-accent);
}

.experience-card strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 45px;
}

.experience-card small {
  color: rgba(255, 255, 255, 0.6);
}

.floating-dot {
  position: absolute;
  top: 80px;
  right: 70px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 30px var(--color-accent);
}

@keyframes rotate-ring {
  from {
    transform: rotate(0);
  }
  to {
    transform: rotate(360deg);
  }
}

/* =========================================================
   02. MARQUEE
   ========================================================= */

.brand-marquee {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: 25px 0;
  background: var(--color-panel);
  border-block: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-marquee::before,
.brand-marquee::after {
  content: "";
  position: absolute;
  z-index: 2;
  inset-block: 0;
  width: 70px;
  pointer-events: none;
}

.brand-marquee::before {
  left: 0;
  background: linear-gradient(to right, var(--color-panel), transparent);
}

.brand-marquee::after {
  right: 0;
  background: linear-gradient(to left, var(--color-panel), transparent);
}

.brand-marquee__track {
  display: flex;
  width: max-content;
  animation: marquee-scroll 38s linear infinite;
  will-change: transform;
}

.brand-marquee__group {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  white-space: nowrap;
}

.brand-marquee span {
  padding-inline: 30px;
  color: var(--color-white);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.09em;
}

.brand-marquee i {
  color: var(--color-accent);
  font-size: 13px;
  font-style: normal;
  line-height: 1;
}

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

/* =========================================================
   03. WHO IS THIS FOR?
   ========================================================= */

.learning-path-section {
  padding: 100px 25px;
  background: var(--color-surface);
  color: var(--color-dark);
}

.learning-path-container {
  width: min(1100px, 100%);
  margin-inline: auto;
}

.learning-header {
  max-width: 760px;
  margin-inline: auto;
  text-align: center;
}

.learning-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-secondary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.22em;
}

.learning-label::before,
.learning-label::after {
  content: "";
  width: 35px;
  height: 1px;
  background: var(--color-accent);
}

.learning-header h2 {
  margin: 25px 0;
  font-family: var(--font-serif);
  font-size: clamp(45px, 5vw, 68px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
}

.learning-header p {
  max-width: 620px;
  margin-inline: auto;
  color: var(--color-secondary);
  font-size: 16px;
  line-height: 1.8;
}

.learning-path-list {
  margin-top: 80px;
  border-top: 1px solid rgba(45, 50, 80, 0.15);
}

.learning-path-item {
  position: relative;
  display: grid;
  grid-template-columns: 80px 1fr 50px;
  align-items: center;
  padding: 35px 20px;
  overflow: hidden;
  border-bottom: 1px solid rgba(45, 50, 80, 0.15);
  text-decoration: none;
  transition:
    transform 0.45s var(--ease),
    background-color 0.45s ease,
    padding-left 0.45s var(--ease);
}

.learning-path-item::before {
  content: "";
  position: absolute;
  inset-block: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--color-accent);
  transition: height 0.4s ease;
}

.learning-path-item:hover {
  padding-left: 35px;
  background: var(--color-dark);
}

.learning-path-item:hover::before {
  height: 100%;
}

.path-number {
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.path-main h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  transition: color 0.35s ease;
}

.path-main p {
  max-width: 620px;
  margin: 14px 0 0;
  color: var(--color-secondary);
  font-size: 15px;
  line-height: 1.8;
  transition: color 0.35s ease;
}

.path-arrow {
  color: var(--color-secondary);
  font-size: 30px;
  transition:
    color 0.35s ease,
    transform 0.35s ease;
}

.learning-path-item:hover h3 {
  color: var(--color-white);
}

.learning-path-item:hover p {
  color: rgba(255, 255, 255, 0.7);
}

.learning-path-item:hover .path-arrow {
  color: var(--color-accent);
  transform: translateX(8px);
}

/* =========================================================
   04. LEARNING JOURNEY
   ========================================================= */

.learning-path {
  position: relative;
  overflow: hidden;
  padding: 130px 25px;
  background:
    radial-gradient(
      circle at 50% 0%,
      rgba(248, 168, 119, 0.18),
      transparent 35%
    ),
    var(--color-soft);
  color: var(--color-dark);
}

.learning-path::before {
  content: "";
  position: absolute;
  top: 25%;
  left: -140px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(248, 168, 119, 0.08);
  filter: blur(45px);
  pointer-events: none;
}

.learning-container {
  position: relative;
  z-index: 1;
  max-width: 1050px;
  margin-inline: auto;
}

.journey-map {
  position: relative;
  margin-top: 100px;
}

.journey-map::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(248, 168, 119, 0.45),
    transparent
  );
}

.journey-map::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  box-shadow: 0 0 25px rgba(248, 168, 119, 0.9);
  animation: journey-glow 5s infinite alternate;
}

@keyframes journey-glow {
  from {
    top: 0;
  }
  to {
    top: 90%;
  }
}

.journey-item {
  position: relative;
  display: flex;
  margin-bottom: 75px;
}

.journey-item:nth-child(even) {
  justify-content: flex-end;
}

.journey-node {
  position: absolute;
  z-index: 3;
  left: 50%;
  width: 68px;
  height: 68px;
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--color-panel), var(--color-dark));
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 15px 40px rgba(45, 50, 80, 0.25);
}

.journey-card {
  position: relative;
  width: 420px;
  padding: 40px;
  overflow: hidden;
  border: 1px solid rgba(45, 50, 80, 0.08);
  border-radius: 24px;
  background: var(--color-white);
  transition:
    transform 0.45s ease,
    background-color 0.45s ease,
    border-color 0.45s ease,
    box-shadow 0.45s ease;
}

.journey-card::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0.08;
  transition:
    transform 0.5s ease,
    opacity 0.5s ease;
}

.journey-card:hover {
  transform: translateY(-12px);
  background: var(--color-panel);
  box-shadow: 0 30px 65px rgba(45, 50, 80, 0.18);
}

.journey-card:hover::before {
  transform: scale(2);
  opacity: 0.12;
}

.card-top {
  position: relative;
  z-index: 2;
  display: block;
  margin-bottom: 16px;
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.journey-card h3 {
  position: relative;
  z-index: 2;
  margin: 0 0 18px;
  color: var(--color-dark);
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 500;
  line-height: 1.1;
  transition: color 0.4s ease;
}

.journey-card p {
  position: relative;
  z-index: 2;
  margin: 0;
  color: var(--color-secondary);
  font-size: 15px;
  line-height: 1.8;
  transition: color 0.4s ease;
}

.journey-card:hover h3 {
  color: var(--color-white);
}

.journey-card:hover p {
  color: rgba(255, 255, 255, 0.72);
}

.card-icon {
  position: absolute;
  right: 10px;
  bottom: 4px;
  z-index: 3;
  width: 45px;
  height: 45px;
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-dark);
  font-weight: 900;
  transition: transform 0.4s ease;
}

.journey-card:hover .card-icon {
  transform: rotate(12deg) scale(1.1);
}

/* =========================================================
   05. TESTIMONIALS
   ========================================================= */

.testimonial-experience {
  position: relative;
  overflow: hidden;
  padding: 135px 25px 120px;
  background:
    radial-gradient(
      circle at 50% -10%,
      rgba(248, 168, 119, 0.18),
      transparent 35%
    ),
    var(--color-dark);
  color: var(--color-white);
}

.testimonial-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  pointer-events: none;
}

.orb-one {
  top: 20%;
  left: -180px;
  width: 300px;
  height: 300px;
  background: var(--color-accent);
}

.orb-two {
  right: -180px;
  bottom: 5%;
  width: 350px;
  height: 350px;
  background: var(--color-secondary);
}

.testimonial-grid,
.research-grid {
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.7) 1px, transparent 1px);
  background-size: 70px 70px;
  pointer-events: none;
}

.testimonial-container {
  position: relative;
  z-index: 2;
  width: min(1280px, 100%);
  margin-inline: auto;
}

.testimonial-header {
  max-width: 720px;
  margin: 0 auto 75px;
  text-align: center;
}

.testimonial-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.22em;
}

.testimonial-eyebrow::before,
.testimonial-eyebrow::after {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--color-accent);
}

.testimonial-header h2 {
  margin: 25px 0;
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: clamp(48px, 6vw, 76px);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.045em;
}

.testimonial-header h2 em {
  color: var(--color-accent);
  font-style: italic;
}

.testimonial-header p {
  max-width: 610px;
  margin-inline: auto;
  color: rgba(255, 255, 255, 0.62);
  font-size: 16px;
  line-height: 1.8;
}

.testimonial-carousel {
  display: flex;
  align-items: center;
  gap: 18px;
}

.testimonial-viewport {
  flex: 1;
  min-width: 0;
}

.testimonial-stage {
  display: flex;
  gap: 22px;
  align-items: stretch;
  overflow-x: auto;
  overflow-y: visible;
  padding: 25px 10px 35px;
  margin: -25px -10px;
  scroll-behavior: smooth;
  scrollbar-width: none;
}

.testimonial-stage::-webkit-scrollbar {
  display: none;
}

.testimonial-card {
  position: relative;
  flex: 0 0 calc((100% - 44px) / 3);
  min-height: 560px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.055);
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.22);
  transition:
    transform 0.6s var(--ease),
    opacity 0.5s ease,
    filter 0.5s ease,
    border-color 0.5s ease,
    box-shadow 0.5s ease;
}

.testimonial-featured {
  border-color: rgba(248, 168, 119, 0.35);
}

.testimonial-image {
  position: relative;
  height: 330px;
  overflow: hidden;
}

.testimonial-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition:
    transform 0.8s var(--ease),
    filter 0.6s ease;
}

.image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(45, 50, 80, 0.05),
    rgba(45, 50, 80, 0.15) 40%,
    rgba(45, 50, 80, 0.9) 100%
  );
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 76px;
  height: 76px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-white);
  cursor: pointer;
  transition:
    transform 0.45s ease,
    background-color 0.45s ease,
    border-color 0.45s ease;
}

.play-icon {
  margin-left: 3px;
  font-size: 17px;
}

.video-label {
  position: absolute;
  left: 25px;
  bottom: 22px;
  color: var(--color-white);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.18em;
  opacity: 0.8;
}

.testimonial-content {
  padding: 30px 30px 35px;
}

.testimonial-category {
  display: block;
  margin-bottom: 15px;
  color: var(--color-accent);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.testimonial-content h3 {
  margin: 0;
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 29px;
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.testimonial-person {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 25px;
}

.person-line {
  width: 28px;
  height: 1px;
  background: var(--color-accent);
}

.testimonial-person strong,
.testimonial-person span {
  display: block;
}

.testimonial-person strong {
  font-size: 12px;
}

.testimonial-person span {
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 10px;
}

.testimonial-number {
  position: absolute;
  top: 23px;
  right: 24px;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(45, 50, 80, 0.35);
  color: var(--color-white);
  font-size: 10px;
  font-weight: 800;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.testimonial-card:hover {
  transform: translateY(-18px) scale(1.015);
  border-color: rgba(248, 168, 119, 0.45);
  box-shadow:
    0 40px 90px rgba(0, 0, 0, 0.34),
    0 0 60px rgba(248, 168, 119, 0.08);
}

.testimonial-card:hover .testimonial-image img {
  transform: scale(1.08);
  filter: saturate(1.1);
}

.testimonial-card:hover .play-button {
  transform: translate(-50%, -50%) scale(1.12);
  background: var(--color-accent);
  color: var(--color-dark);
  border-color: var(--color-accent);
}

.testimonial-stage:hover .testimonial-card:not(:hover) {
  opacity: 0.48;
  filter: blur(1.5px);
  transform: scale(0.97);
}

.testimonial-arrow {
  flex: 0 0 54px;
  width: 54px;
  height: 54px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-white);
  font-size: 20px;
  cursor: pointer;
  transition:
    transform 0.35s ease,
    background-color 0.35s ease,
    border-color 0.35s ease;
}

.testimonial-arrow:hover {
  transform: scale(1.1);
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-dark);
}

/* =========================================================
   06. RESEARCH
   ========================================================= */

.research-preview {
  position: relative;
  overflow: hidden;
  padding: 120px 25px;
  background:
    radial-gradient(
      circle at 15% 15%,
      rgba(248, 168, 119, 0.12),
      transparent 35%
    ),
    radial-gradient(
      circle at 90% 80%,
      rgba(103, 111, 141, 0.25),
      transparent 35%
    ),
    var(--color-dark);
  color: var(--color-white);
}

.research-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.22;
  pointer-events: none;
}

.research-glow-one {
  top: 20%;
  left: -160px;
  width: 320px;
  height: 320px;
  background: var(--color-accent);
}

.research-glow-two {
  right: -160px;
  bottom: 5%;
  width: 360px;
  height: 360px;
  background: var(--color-secondary);
}

.research-container {
  position: relative;
  z-index: 2;
  width: min(var(--container), 100%);
  margin-inline: auto;
}

.research-topline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 80px;
}

.research-topline span {
  color: rgba(255, 255, 255, 0.42);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.24em;
  white-space: nowrap;
}

.research-line {
  width: 55px;
  height: 1px;
  background: rgba(248, 168, 119, 0.42);
}

.research-main {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 90px;
  align-items: center;
}

.research-portrait-area {
  position: relative;
  min-height: 650px;
}

.portrait-frame {
  position: relative;
  width: 100%;
  max-width: 480px;
  height: 610px;
  margin-inline: auto;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 30px;
  background: var(--color-panel);
  box-shadow: 0 35px 90px rgba(0, 0, 0, 0.28);
}

.portrait-frame img {
  transition:
    transform 0.8s var(--ease),
    filter 0.6s ease;
}

.portrait-frame:hover img {
  transform: scale(1.045);
  filter: saturate(1.08);
}

.portrait-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(45, 50, 80, 0.02),
    transparent 45%,
    rgba(45, 50, 80, 0.88) 100%
  );
}

.portrait-label {
  position: absolute;
  left: 25px;
  bottom: 25px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.portrait-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 12px rgba(248, 168, 119, 0.9);
}

.portrait-index {
  position: absolute;
  top: 22px;
  right: 22px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.research-badge {
  position: absolute;
  top: -10px;
  right: -60px;
  width: 150px;
  height: 150px;
  border: 1px solid rgba(248, 168, 119, 0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(45, 50, 80, 0.72);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.badge-ring {
  position: absolute;
  inset: 9px;
  border: 1px dashed rgba(248, 168, 119, 0.38);
  border-radius: 50%;
  animation: research-rotate 20s linear infinite;
}

@keyframes research-rotate {
  from {
    transform: rotate(0);
  }
  to {
    transform: rotate(360deg);
  }
}

.badge-ring span {
  position: absolute;
  top: 50%;
  left: 50%;
  transform-origin: 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.badge-ring span:nth-child(1) {
  transform: rotate(-80deg) translateX(47px);
}
.badge-ring span:nth-child(2) {
  transform: rotate(10deg) translateX(47px);
}
.badge-ring span:nth-child(3) {
  transform: rotate(100deg) translateX(47px);
}
.badge-ring span:nth-child(4) {
  transform: rotate(190deg) translateX(47px);
}

.badge-center {
  position: relative;
  z-index: 2;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-dark);
  font-size: 17px;
  box-shadow: 0 0 35px rgba(248, 168, 119, 0.28);
}

.portrait-caption {
  position: absolute;
  left: -30px;
  bottom: 25px;
  width: 210px;
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  background: rgba(66, 71, 105, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.portrait-caption span {
  display: block;
  margin-bottom: 7px;
  color: var(--color-accent);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.portrait-caption p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.45;
}

.research-content {
  max-width: 620px;
}

.research-eyebrow {
  font-size: 10px;
  letter-spacing: 0.22em;
}

.research-content h2 {
  margin: 24px 0 25px;
  font-family: var(--font-serif);
  font-size: clamp(48px, 5vw, 72px);
  font-weight: 500;
  line-height: 0.97;
  letter-spacing: -0.045em;
}

.research-content h2 em {
  color: var(--color-accent);
  font-style: italic;
}

.research-intro {
  max-width: 570px;
  margin: 0 0 42px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 15px;
  line-height: 1.85;
}

.research-list {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.research-item {
  position: relative;
  display: grid;
  grid-template-columns: 42px 1fr 45px;
  gap: 18px;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-white);
  text-decoration: none;
  transition:
    padding 0.4s ease,
    background-color 0.4s ease;
}

.research-item:hover {
  padding-inline: 15px;
  background: rgba(255, 255, 255, 0.035);
}

.research-number {
  color: rgba(255, 255, 255, 0.3);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.research-item:hover .research-number {
  color: var(--color-accent);
}

.research-item-content span {
  display: block;
  margin-bottom: 7px;
  color: var(--color-accent);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.research-item-content h3 {
  margin: 0;
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 500;
  line-height: 1.2;
}

.research-item-status,
.research-item-journal {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  line-height: 1.5;
}

.research-item-status {
  margin-top: 12px;
  font-weight: 700;
}

.research-item-journal {
  color: rgba(255, 255, 255, 0.55);
}

.research-arrow {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  transition:
    transform 0.4s ease,
    background-color 0.4s ease,
    color 0.4s ease;
}

.research-item:hover .research-arrow {
  transform: rotate(8deg) scale(1.08);
  background: var(--color-accent);
  color: var(--color-dark);
}

.research-bottom {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 90px;
}

.research-bottom span {
  color: rgba(255, 255, 255, 0.28);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.2em;
  white-space: nowrap;
}

.research-bottom-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(248, 168, 119, 0.35), transparent);
}

/* =========================================================
   07. TEACHING PHILOSOPHY
   ========================================================= */

.teacher-philosophy {
  position: relative;
  overflow: hidden;
  padding: 80px 25px;
  background:
    radial-gradient(
      circle at 15% 20%,
      rgba(248, 168, 119, 0.12),
      transparent 35%
    ),
    radial-gradient(
      circle at 90% 80%,
      rgba(103, 111, 141, 0.25),
      transparent 35%
    ),
    var(--color-dark);
  color: var(--color-white);
}

.teacher-philosophy-container {
  max-width: 1180px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 0.9fr 1fr;
  gap: 90px;
  align-items: center;
}

.teacher-image-area {
  position: relative;
}

.teacher-photo {
  position: relative;
  height: 650px;
  overflow: hidden;
  border: 1px solid rgba(248, 168, 119, 0.25);
  border-radius: 35px;
  background: var(--color-panel);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.35);
}

.floating-badge {
  position: absolute;
  z-index: 5;
  top: -35px;
  right: -35px;
  width: 150px;
  height: 150px;
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-panel);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
}

.badge-number {
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-size: 45px;
  line-height: 1;
}

.badge-text {
  margin-top: 10px;
  text-align: center;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.photo-decoration {
  position: absolute;
  top: -35px;
  left: -35px;
  width: 100px;
  height: 100px;
  border: 1px dashed rgba(248, 168, 119, 0.5);
  border-radius: 50%;
}

.teacher-philosophy-content h2 {
  margin: 28px 0;
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: clamp(45px, 5vw, 70px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
}

.teacher-philosophy-content h2 em {
  color: var(--color-accent);
  font-style: italic;
}

.teacher-intro {
  max-width: 560px;
  margin-bottom: 55px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 17px;
  line-height: 1.9;
}

.philosophy-items {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.philosophy-item {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 25px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  transition: transform 0.4s ease;
}

.philosophy-item:hover {
  transform: translateX(12px);
}

.item-number {
  padding-top: 8px;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 800;
}

.philosophy-item h3 {
  margin: 0 0 10px;
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 500;
}

.philosophy-item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  line-height: 1.8;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 1024px) {
  .teacher-hero {
    padding: 90px 30px;
  }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: 700px;
    margin-inline: auto;
  }

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

  .hero-content p {
    margin-inline: auto;
  }

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

  .hero-visual {
    height: 520px;
    margin-top: 20px;
  }

  .teacher-image {
    width: 350px;
    height: 450px;
  }

  .hero-ring {
    width: 410px;
    height: 510px;
  }

  .experience-card {
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%);
  }

  .floating-dot {
    right: 25%;
  }

  .testimonial-card {
    flex-basis: calc((100% - 22px) / 2);
  }

  .research-main {
    grid-template-columns: 1fr;
    gap: 70px;
  }

  .research-portrait-area {
    min-height: 550px;
    max-width: 600px;
    width: 100%;
    margin-inline: auto;
  }

  .portrait-frame {
    height: 520px;
    max-width: 600px;
  }

  .research-badge {
    right: -10px;
    top: 45px;
  }

  .portrait-caption {
    left: 15px;
    bottom: 10px;
  }

  .research-content {
    max-width: 700px;
    margin-inline: auto;
  }

  .teacher-philosophy-container {
    grid-template-columns: 1fr;
    gap: 70px;
  }

  .teacher-photo {
    height: 550px;
  }

  .floating-badge {
    right: 20px;
  }

  .journey-map::before,
  .journey-map::after {
    left: 32px;
  }

  .journey-item,
  .journey-item:nth-child(even) {
    justify-content: flex-start;
    padding-left: 90px;
  }

  .journey-node {
    left: 32px;
  }

  .journey-card {
    width: 100%;
  }
}

@media (max-width: 900px) {
  .testimonial-card {
    min-height: 530px;
  }

  .testimonial-arrow {
    flex-basis: 48px;
    width: 48px;
    height: 48px;
  }
}

@media (max-width: 768px) {
  .learning-path-section {
    padding: 80px 20px;
  }

  .learning-header h2 {
    font-size: 42px;
  }

  .learning-path-item {
    grid-template-columns: 50px 1fr;
    padding: 30px 5px;
  }

  .path-arrow {
    display: none;
  }

  .path-main h3 {
    font-size: 28px;
  }

  .brand-marquee {
    padding: 17px 0;
  }

  .brand-marquee span {
    padding-inline: 19px;
    font-size: 11px;
    letter-spacing: 0.08em;
  }

  .brand-marquee i {
    font-size: 10px;
  }

  .brand-marquee::before,
  .brand-marquee::after {
    width: 35px;
  }

  .brand-marquee__track {
    animation-duration: 30s;
  }

  .hero-content h1 {
    font-size: 42px;
  }

  .hero-content p {
    font-size: 15px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .primary-btn,
  .secondary-btn {
    width: 100%;
  }

  .hero-visual {
    height: 430px;
    margin-top: 40px;
  }

  .teacher-image {
    width: 280px;
    height: 360px;
  }

  .hero-ring {
    width: 330px;
    height: 410px;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 55px;
  }

  .hero-stats strong {
    font-size: 25px;
  }

  .hero-stats span {
    font-size: 9px;
  }

  .floating-dot {
    width: 12px;
    height: 12px;
    top: 25px;
  }

  .journey-map {
    margin-top: 60px;
  }

  .journey-item,
  .journey-item:nth-child(even) {
    padding-left: 70px;
    margin-bottom: 45px;
  }

  .journey-map::before,
  .journey-map::after {
    left: 25px;
  }

  .journey-node {
    left: 25px;
    width: 52px;
    height: 52px;
    font-size: 12px;
  }

  .journey-card {
    padding: 28px 24px;
    border-radius: 24px;
  }

  .journey-card h3 {
    font-size: 28px;
  }

  .journey-card p {
    font-size: 13px;
  }

  .card-icon {
    width: 38px;
    height: 38px;
    right: 18px;
    bottom: 18px;
  }

  .testimonial-experience {
    padding: 90px 18px;
  }

  .testimonial-header {
    margin-bottom: 45px;
  }

  .testimonial-header h2 {
    font-size: 43px;
  }

  .testimonial-header p {
    font-size: 14px;
  }

  .testimonial-carousel {
    gap: 5px;
  }

  .testimonial-card {
    flex-basis: 88%;
    min-height: 500px;
    border-radius: 24px;
  }

  .testimonial-stage {
    gap: 16px;
    padding-inline: 5px;
    margin-inline: -5px;
  }

  .testimonial-image {
    height: 280px;
  }

  .testimonial-content {
    padding: 25px 24px 1px;
  }

  .testimonial-content h3 {
    font-size: 16px;
  }

  .testimonial-stage:hover .testimonial-card:not(:hover) {
    opacity: 1;
    filter: none;
    transform: none;
  }

  .testimonial-card:hover {
    transform: translateY(-6px);
  }

  .testimonial-arrow {
    flex-basis: 42px;
    width: 42px;
    height: 42px;
    font-size: 17px;
  }

  .research-preview {
    padding: 80px 18px 70px;
  }

  .research-topline {
    margin-bottom: 55px;
  }

  .research-topline span {
    font-size: 7px;
    letter-spacing: 0.17em;
  }

  .research-line {
    width: 25px;
  }

  .research-portrait-area {
    min-height: 450px;
  }

  .portrait-frame {
    height: 420px;
    border-radius: 24px;
  }

  .research-badge {
    width: 115px;
    height: 115px;
    right: -5px;
    top: 25px;
  }

  .badge-center {
    width: 38px;
    height: 38px;
    font-size: 14px;
  }

  .badge-ring span {
    font-size: 5px;
  }

  .portrait-caption {
    left: 10px;
    bottom: 5px;
    width: 185px;
    padding: 15px;
  }

  .portrait-caption p {
    font-size: 13px;
  }

  .research-content h2 {
    font-size: 42px;
  }

  .research-intro {
    font-size: 14px;
    line-height: 1.75;
  }

  .research-item {
    grid-template-columns: 32px 1fr 38px;
    gap: 12px;
    padding: 18px 0;
  }

  .research-item-content h3 {
    font-size: 19px;
  }

  .research-arrow {
    width: 34px;
    height: 34px;
  }

  .research-bottom {
    margin-top: 60px;
  }

  .research-bottom span {
    font-size: 7px;
  }

  .teacher-philosophy {
    padding: 80px 20px;
  }

  .teacher-photo {
    height: 430px;
    border-radius: 25px;
  }

  .floating-badge {
    width: 120px;
    height: 120px;
    top: -20px;
  }

  .badge-number {
    font-size: 35px;
  }

  .teacher-philosophy-content h2 {
    font-size: 40px;
  }

  .teacher-intro {
    font-size: 15px;
  }

  .philosophy-item {
    gap: 15px;
  }

  .philosophy-item h3 {
    font-size: 25px;
  }

  .philosophy-item:hover {
    transform: none;
  }
}

@media (max-width: 600px) {
  .learning-path {
    padding: 80px 20px;
  }

  .learning-header h2 {
    font-size: 40px;
  }

  .learning-header p {
    font-size: 14px;
  }
}

@media (max-width: 390px) {
  .hero-content h1 {
    font-size: 36px;
  }

  .hero-visual {
    height: 390px;
  }

  .teacher-image {
    width: 250px;
    height: 330px;
  }

  .hero-ring {
    width: 290px;
    height: 370px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-stats div {
    align-items: center;
  }

  .brand-marquee span {
    padding-inline: 16px;
    font-size: 10px;
  }

  .testimonial-card {
    flex-basis: 88%;
    min-height: 470px;
  }

  .testimonial-image {
    height: 250px;
  }

  .play-button {
    width: 65px;
    height: 65px;
  }

  .testimonial-arrow {
    flex-basis: 38px;
    width: 38px;
    height: 38px;
  }

  .research-content h2 {
    font-size: 37px;
  }

  .portrait-frame {
    height: 380px;
  }

  .research-portrait-area {
    min-height: 410px;
  }

  .research-badge {
    width: 100px;
    height: 100px;
  }

  .portrait-caption {
    width: 170px;
  }
}

/* =========================================================
   ACCESSIBILITY / PERFORMANCE
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-ring,
  .brand-marquee__track,
  .journey-map::after,
  .badge-ring {
    animation: none;
  }

  .primary-btn,
  .secondary-btn,
  .learning-path-item,
  .journey-card,
  .testimonial-card,
  .testimonial-image img,
  .play-button,
  .testimonial-arrow,
  .research-item,
  .research-arrow,
  .portrait-frame img,
  .philosophy-item {
    transition: none;
  }
}

/* =========================================================
   SHARED NAVIGATION + FOOTER
========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  color: var(--color-white);
  background: rgba(45, 50, 80, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.site-header__inner {
  width: min(1280px, 100%);
  min-height: 82px;
  padding: 0 28px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  color: var(--color-white);
  text-decoration: none;
}
.site-brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(248, 168, 119, 0.7);
  border-radius: 14px 14px 14px 4px;
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 26px;
  line-height: 1;
}
.site-brand__mark span {
  color: var(--color-accent);
}
.site-brand__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.15em;
}
.site-brand__text small {
  color: rgba(255, 255, 255, 0.48);
  font-size: 8px;
  letter-spacing: 0.22em;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 17px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  transition:
    color 0.25s ease,
    background 0.25s ease,
    border-color 0.25s ease;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
}
.site-nav .nav-test-link {
  margin-left: 7px;
  border: 1px solid rgba(248, 168, 119, 0.65);
  color: var(--color-accent);
}
.site-nav .nav-test-link:hover,
.site-nav .nav-test-link[aria-current="page"] {
  color: var(--color-dark);
  background: var(--color-accent);
}
.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  background: transparent;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 19px;
  height: 1px;
  margin: 5px auto;
  background: white;
  transition: transform 0.2s ease;
}
.site-footer {
  padding: 42px 25px;
  background: #222640;
  color: white;
}
.site-footer__inner {
  width: min(1180px, 100%);
  margin: auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px 35px;
}
.site-footer__inner > p {
  margin: 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 12px;
}
.site-brand--footer .site-brand__mark {
  width: 36px;
  height: 36px;
  font-size: 22px;
}
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.site-footer__links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 11px;
  text-decoration: none;
}
.site-footer__links a:hover {
  color: var(--color-accent);
}
.site-footer__copyright {
  grid-column: 1 / -1;
  padding-top: 17px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.32);
  font-size: 10px;
}

/* =========================================================
   INNER PAGES — LESSONS + RESEARCH
========================================================= */
.inner-page {
  min-height: 60vh;
}
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 110px max(25px, calc((100% - 1180px) / 2)) 115px;
}
.page-hero--dark {
  color: white;
  background:
    radial-gradient(
      circle at 80% 20%,
      rgba(248, 168, 119, 0.18),
      transparent 31%
    ),
    radial-gradient(
      circle at 5% 100%,
      rgba(103, 111, 141, 0.28),
      transparent 34%
    ),
    var(--color-dark);
}
.page-hero__eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--color-accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.2em;
}
.page-hero__eyebrow > span {
  width: 27px;
  height: 1px;
  background: currentColor;
}
.page-hero h1 {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 26px 0;
  font-family: var(--font-serif);
  font-size: clamp(48px, 7vw, 86px);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.045em;
}
.page-hero h1 em {
  color: var(--color-accent);
  font-weight: 500;
}
.page-hero > p {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 0 32px;
  color: rgba(255, 255, 255, 0.67);
  font-size: 16px;
  line-height: 1.85;
}
.page-hero .primary-btn {
  gap: 12px;
}
.page-hero__orbit {
  position: absolute;
  right: 9%;
  top: 50%;
  width: 260px;
  height: 260px;
  border: 1px dashed rgba(248, 168, 119, 0.25);
  border-radius: 50%;
  transform: translateY(-50%);
  animation: research-rotate 30s linear infinite;
}
.page-hero__orbit::before,
.page-hero__orbit::after {
  content: "";
  position: absolute;
  inset: 25px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}
.page-hero__orbit::after {
  inset: 65px;
  border-color: rgba(248, 168, 119, 0.25);
}
.page-hero__orbit span {
  position: absolute;
  color: rgba(255, 255, 255, 0.45);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.15em;
}
.page-hero__orbit span:nth-child(1) {
  top: 25px;
  left: 50%;
  transform: translateX(-50%);
}
.page-hero__orbit span:nth-child(2) {
  right: -8px;
  top: 50%;
}
.page-hero__orbit span:nth-child(3) {
  bottom: 25px;
  left: 50%;
  transform: translateX(-50%);
}
.lesson-catalog,
.research-themes {
  padding: 105px 25px;
  background: var(--color-surface);
}
.section-heading {
  max-width: 740px;
  margin: 0 auto 55px;
  text-align: center;
}
.section-heading > span {
  color: var(--color-secondary);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.2em;
}
.section-heading h2,
.publication-records h2,
.research-page-intro h2,
.lesson-next-step h2 {
  margin: 20px 0;
  color: var(--color-dark);
  font-family: var(--font-serif);
  font-size: clamp(38px, 5vw, 60px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.035em;
}
.section-heading h2 em,
.research-page-intro h2 em,
.publication-records h2 em,
.lesson-next-step h2 em {
  color: var(--color-secondary);
  font-weight: 500;
}
.section-heading p {
  max-width: 610px;
  margin: auto;
  color: var(--color-secondary);
  font-size: 14px;
  line-height: 1.8;
}
.lesson-grid {
  width: min(1180px, 100%);
  margin: auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.lesson-card {
  position: relative;
  min-height: 330px;
  padding: 32px 30px;
  overflow: hidden;
  border: 1px solid rgba(45, 50, 80, 0.09);
  border-radius: 24px;
  box-shadow: 0 16px 45px rgba(45, 50, 80, 0.045);
  transition:
    transform 0.4s var(--ease),
    background 0.4s ease,
    border-color 0.4s ease,
    box-shadow 0.4s ease;
}
.lesson-card::before {
  content: "";
  position: absolute;
  top: -78px;
  right: -78px;
  width: 155px;
  height: 155px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0.09;
  transition: transform 0.5s ease;
}
.lesson-card:hover {
  transform: translateY(-8px);
  background: var(--color-panel);
  border-color: rgba(248, 168, 119, 0.5);
  box-shadow: 0 28px 60px rgba(45, 50, 80, 0.15);
}
.lesson-card:hover::before {
  transform: scale(1.8);
}
.lesson-card__number {
  position: absolute;
  top: 26px;
  right: 27px;
  color: #a1a4b5;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.lesson-card__tag {
  display: block;
  margin-top: 33px;
  color: #c17d54;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.18em;
}
.lesson-card h3 {
  position: relative;
  margin: 13px 0;
  color: var(--color-dark);
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 500;
  line-height: 1.08;
}
.lesson-card p {
  position: relative;
  margin: 0 0 25px;
  color: var(--color-secondary);
  font-size: 12px;
  line-height: 1.85;
}
.lesson-card a {
  position: relative;
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: var(--color-dark);
  font-size: 10px;
  font-weight: 800;
  text-decoration: none;
}
.lesson-card a span {
  color: #c17d54;
  font-size: 17px;
  transition: transform 0.3s ease;
}
.lesson-card:hover h3,
.lesson-card:hover a {
  color: white;
}
.lesson-card:hover p {
  color: rgba(255, 255, 255, 0.7);
}
.lesson-card:hover .lesson-card__number {
  color: var(--color-accent);
}
.lesson-card:hover .lesson-card__tag,
.lesson-card:hover a span {
  color: var(--color-accent);
}
.lesson-card:hover a span {
  transform: translate(3px, -3px);
}
.lesson-card--featured {
  border-color: rgba(248, 168, 119, 0.5);
}
.lesson-card--outline {
  background: transparent;
  border-style: dashed;
}
.lesson-next-step {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 75px max(25px, calc((100% - 1180px) / 2));
  background: #ede9e1;
}
.lesson-next-step > div {
  max-width: 700px;
}
.lesson-next-step > div > span {
  color: var(--color-secondary);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.2em;
}
.lesson-next-step h2 {
  margin: 14px 0;
  font-size: clamp(34px, 4vw, 50px);
}
.lesson-next-step p {
  max-width: 620px;
  margin: 0;
  color: var(--color-secondary);
  font-size: 13px;
  line-height: 1.8;
}
.publications-hero {
  padding-bottom: 90px;
}
.publications-hero .page-hero__orbit {
  display: none;
}
.publications-hero h1 {
  max-width: 960px;
}
.publications-hero > p {
  max-width: 690px;
}
.publications-hero__signature {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 52px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.2em;
}
.signature-symbol {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(248, 168, 119, 0.55);
  border-radius: 50%;
  color: var(--color-accent);
  font-size: 20px;
}
.publications-hero__signature i {
  color: var(--color-accent);
  font-style: normal;
}
.signature-rule {
  width: 100px;
  height: 1px;
  background: linear-gradient(90deg, rgba(248, 168, 119, 0.6), transparent);
}
.research-page-intro {
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  align-items: center;
  gap: clamp(45px, 8vw, 110px);
  padding: 110px max(25px, calc((100% - 1180px) / 2));
  background: white;
}
.research-page-intro__portrait {
  position: relative;
  max-width: 460px;
}
.research-page-intro__portrait img {
  display: block;
  width: 100%;
  height: 540px;
  object-fit: cover;
  border-radius: 28px 28px 100px 28px;
  background: var(--color-panel);
}
.research-page-intro__portrait span {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  color: white;
  background: rgba(45, 50, 80, 0.72);
  backdrop-filter: blur(12px);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.16em;
}
.research-page-intro__text h2 {
  margin-top: 22px;
}
.research-page-intro__text p {
  color: var(--color-secondary);
  font-size: 14px;
  line-height: 1.9;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 17px;
  color: var(--color-dark);
  font-size: 11px;
  font-weight: 800;
  text-decoration: none;
}
.text-link span {
  color: #c17d54;
  font-size: 18px;
}
.research-themes {
  background: #f0ede7;
}
.theme-grid {
  width: min(1180px, 100%);
  margin: auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.theme-card {
  position: relative;
  min-height: 270px;
  padding: 32px;
  border: 1px solid rgba(45, 50, 80, 0.1);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.72);
  transition:
    transform 0.35s ease,
    box-shadow 0.35s ease;
}
.theme-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 55px rgba(45, 50, 80, 0.09);
}
.theme-card > span {
  color: #b87953;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.16em;
}
.theme-card h3 {
  max-width: 270px;
  margin: 24px 0 12px;
  color: var(--color-dark);
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.08;
}
.theme-card p {
  max-width: 300px;
  color: var(--color-secondary);
  font-size: 12px;
  line-height: 1.85;
}
.theme-mark {
  position: absolute;
  right: 24px;
  bottom: 18px;
  color: rgba(248, 168, 119, 0.75);
  font-size: 25px;
}
.publication-records {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  align-items: center;
  gap: 70px;
  padding: 100px max(25px, calc((100% - 1180px) / 2));
  background: white;
}
.publication-records h2 {
  font-size: clamp(36px, 4vw, 54px);
}
.publication-records > div:first-child p {
  color: var(--color-secondary);
  font-size: 13px;
  line-height: 1.85;
}
.publication-empty {
  padding: 34px;
  border: 1px dashed rgba(45, 50, 80, 0.25);
  border-radius: 22px;
  background: var(--color-surface);
}
.publication-empty__icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
  border-radius: 50%;
  background: var(--color-dark);
  color: var(--color-accent);
}
.publication-empty strong {
  display: block;
  color: var(--color-dark);
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 500;
}
.publication-empty p {
  margin-bottom: 0;
  color: var(--color-secondary);
  font-size: 12px;
  line-height: 1.8;
}

/* =========================================================
   FREE LEVEL TEST
========================================================= */
.level-test-page {
  background: var(--color-surface);
}
.test-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 60px;
  padding: 95px max(25px, calc((100% - 1180px) / 2)) 90px;
  overflow: hidden;
  color: white;
  background:
    radial-gradient(
      circle at 85% 45%,
      rgba(248, 168, 119, 0.16),
      transparent 30%
    ),
    var(--color-dark);
}
.test-hero__copy {
  position: relative;
  z-index: 1;
}
.test-hero h1 {
  margin: 22px 0;
  font-family: var(--font-serif);
  font-size: clamp(45px, 5.7vw, 70px);
  font-weight: 500;
  line-height: 0.99;
  letter-spacing: -0.04em;
}
.test-hero h1 em {
  color: var(--color-accent);
}
.test-hero__copy > p {
  max-width: 650px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  line-height: 1.9;
}
.test-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 25px;
  margin-top: 30px;
}
.test-meta span {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 9px;
  font-weight: 700;
}
.test-meta i {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid rgba(248, 168, 119, 0.4);
  border-radius: 50%;
  color: var(--color-accent);
  font-size: 8px;
  font-style: normal;
}
.test-visual {
  position: relative;
  display: grid;
  place-items: center;
  width: min(100%, 340px);
  aspect-ratio: 1;
  margin-inline: auto;
}
.test-visual__orbit {
  position: absolute;
  inset: 4%;
  border: 1px dashed rgba(248, 168, 119, 0.42);
  border-radius: 50%;
  animation: research-rotate 30s linear infinite;
}
.test-visual__orbit::before {
  content: "";
  position: absolute;
  inset: 16%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}
.test-visual__center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 52%;
  aspect-ratio: 1;
  border: 1px solid rgba(248, 168, 119, 0.55);
  border-radius: 50%;
  background: linear-gradient(145deg, #424769, #2d3250);
  box-shadow:
    0 20px 65px rgba(0, 0, 0, 0.22),
    0 0 0 12px rgba(248, 168, 119, 0.04);
}
.test-visual__center span,
.test-visual__center small {
  color: rgba(255, 255, 255, 0.55);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.22em;
}
.test-visual__center strong {
  margin: 9px 0;
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-size: clamp(25px, 3vw, 36px);
  font-weight: 500;
}
.test-level {
  position: absolute;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(248, 168, 119, 0.5);
  border-radius: 50%;
  color: var(--color-accent);
  background: #343955;
  font-size: 10px;
  font-weight: 800;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}
.test-level--a1 {
  top: 12%;
  left: 18%;
}
.test-level--b1 {
  top: 43%;
  right: 0;
}
.test-level--c1 {
  bottom: 8%;
  left: 35%;
}
.test-area {
  padding: 80px 20px 95px;
}
.test-panel {
  width: min(780px, 100%);
  min-height: 420px;
  margin: auto;
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid rgba(45, 50, 80, 0.1);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 25px 80px rgba(45, 50, 80, 0.09);
}
.test-panel__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}
.test-stage-label,
.test-result__eyebrow {
  color: #b87953;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.18em;
}
.test-panel__top h2 {
  margin: 11px 0 0;
  color: var(--color-dark);
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 500;
}
.test-count {
  padding: 9px 12px;
  border: 1px solid rgba(45, 50, 80, 0.12);
  border-radius: 999px;
  color: var(--color-dark);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}
.test-count i {
  color: var(--color-secondary);
  font-style: normal;
  font-weight: 500;
}
.test-progress {
  height: 4px;
  margin: 25px 0 32px;
  overflow: hidden;
  border-radius: 99px;
  background: #ece9e4;
}
.test-progress span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--color-accent);
  transition: width 0.35s ease;
}
.test-instruction {
  margin: 0 0 12px;
  color: var(--color-secondary);
  font-size: 11px;
}
.test-question {
  margin: 0 0 24px;
  color: var(--color-dark);
  font-family: var(--font-serif);
  font-size: clamp(25px, 4vw, 34px);
  font-weight: 500;
  line-height: 1.2;
}
.test-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 11px;
}
.test-option {
  min-height: 58px;
  padding: 14px 16px;
  border: 1px solid rgba(45, 50, 80, 0.13);
  border-radius: 13px;
  background: white;
  color: var(--color-dark);
  text-align: left;
  cursor: pointer;
  font-size: 13px;
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    transform 0.2s ease;
}
.test-option:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  background: #fffaf6;
}
.test-option:focus-visible {
  outline: 3px solid rgba(248, 168, 119, 0.5);
  outline-offset: 2px;
}
.test-option:disabled {
  cursor: default;
  opacity: 0.78;
}
.test-option.is-selected {
  border-color: var(--color-dark);
  background: #f1eee8;
}
.test-feedback {
  min-height: 22px;
  margin-top: 16px;
  color: var(--color-secondary);
  font-size: 12px;
}
.test-feedback.is-correct {
  color: #26764f;
}
.test-feedback.is-incorrect {
  color: #a64c43;
}
.test-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}
.test-actions .primary-btn,
.result-actions .primary-btn {
  border: 0;
  cursor: pointer;
}
.test-actions button[hidden],
.test-result[hidden] {
  display: none !important;
}
.test-result {
  padding-top: 10px;
  text-align: center;
}
.test-result__level {
  display: grid;
  place-items: center;
  width: 132px;
  height: 132px;
  margin: 24px auto;
  border: 1px solid rgba(248, 168, 119, 0.65);
  border-radius: 50%;
  color: var(--color-accent);
  background: var(--color-dark);
  box-shadow: 0 0 0 12px rgba(248, 168, 119, 0.07);
  font-family: var(--font-serif);
  font-size: 42px;
}
.test-result h3 {
  margin: 10px 0;
  color: var(--color-dark);
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 500;
}
.test-result > p:not(.test-disclaimer) {
  max-width: 500px;
  margin: 0 auto;
  color: var(--color-secondary);
  font-size: 13px;
  line-height: 1.8;
}
.result-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 25px;
}
.secondary-btn--dark {
  border-color: rgba(45, 50, 80, 0.25);
  color: var(--color-dark);
}
.secondary-btn--dark:hover {
  background: var(--color-dark);
  color: white;
}
.test-disclaimer {
  margin: 25px auto 0;
  color: #8a8d9e;
  font-size: 10px;
  line-height: 1.7;
}
.test-privacy-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin: 22px auto 0;
  color: var(--color-secondary);
  font-size: 10px;
  text-align: center;
}
.test-privacy-note span {
  color: #b87953;
}

@media (max-width: 900px) {
  .site-header__inner {
    min-height: 72px;
    padding-inline: 22px;
  }
  .nav-toggle {
    display: block;
  }
  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 5px;
    padding: 14px 22px 22px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(45, 50, 80, 0.98);
    box-shadow: 0 20px 35px rgba(0, 0, 0, 0.15);
  }
  .site-nav.is-open {
    display: flex;
  }
  .site-nav a {
    justify-content: space-between;
    padding-inline: 16px;
  }
  .site-nav .nav-test-link {
    margin: 5px 0 0;
  }
  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }
  .site-footer__inner > p {
    grid-column: 1 / -1;
    grid-row: 2;
  }
  .site-footer__links {
    grid-column: 1 / -1;
  }
  .page-hero__orbit {
    right: -90px;
    opacity: 0.65;
  }
  .lesson-grid,
  .theme-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .research-page-intro {
    grid-template-columns: 1fr;
    gap: 50px;
  }
  .research-page-intro__portrait {
    width: min(460px, 100%);
    margin-inline: auto;
  }
  .research-page-intro__text {
    max-width: 700px;
    margin-inline: auto;
  }
  .publication-records {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .test-hero {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .test-visual {
    width: min(280px, 70vw);
  }
}
@media (max-width: 600px) {
  .site-header__inner {
    padding-inline: 17px;
  }
  .site-brand__mark {
    width: 38px;
    height: 38px;
  }
  .site-brand__text {
    font-size: 10px;
  }
  .site-footer {
    padding: 35px 20px;
  }
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .site-footer__inner > p,
  .site-footer__links,
  .site-footer__copyright {
    grid-column: auto;
  }
  .site-footer__inner > p {
    grid-row: auto;
  }
  .page-hero {
    padding: 80px 20px 85px;
  }
  .page-hero h1 {
    font-size: 46px;
  }
  .page-hero > p {
    font-size: 14px;
  }
  .page-hero__orbit {
    width: 180px;
    height: 180px;
    top: auto;
    bottom: -65px;
    right: -50px;
    transform: none;
  }
  .lesson-catalog,
  .research-themes {
    padding: 75px 18px;
  }
  .section-heading {
    margin-bottom: 38px;
  }
  .section-heading h2 {
    font-size: 39px;
  }
  .lesson-grid,
  .theme-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .lesson-card {
    min-height: 280px;
    padding: 28px 25px;
  }
  .lesson-card h3 {
    font-size: 28px;
  }
  .lesson-next-step {
    align-items: flex-start;
    flex-direction: column;
    padding: 65px 20px;
    gap: 25px;
  }
  .lesson-next-step .primary-btn {
    width: auto;
  }
  .publications-hero__signature {
    margin-top: 35px;
  }
  .research-page-intro {
    padding: 75px 20px;
  }
  .research-page-intro__portrait img {
    height: 420px;
    border-bottom-right-radius: 70px;
  }
  .research-page-intro h2 {
    font-size: 40px;
  }
  .theme-card {
    min-height: 235px;
    padding: 27px;
  }
  .publication-records {
    padding: 75px 20px;
  }
  .publication-records h2 {
    font-size: 39px;
  }
  .test-hero {
    padding: 70px 20px 55px;
  }
  .test-hero h1 {
    font-size: 43px;
  }
  .test-hero__copy > p {
    font-size: 13px;
  }
  .test-meta {
    gap: 12px;
  }
  .test-area {
    padding: 55px 14px 70px;
  }
  .test-panel {
    padding: 24px 18px;
    border-radius: 22px;
  }
  .test-panel__top h2 {
    font-size: 30px;
  }
  .test-count {
    font-size: 10px;
  }
  .test-options {
    grid-template-columns: 1fr;
    gap: 9px;
  }
  .test-option {
    min-height: 52px;
  }
  .test-actions {
    justify-content: stretch;
  }
  .test-actions .primary-btn {
    width: 100%;
  }
  .result-actions {
    flex-direction: column;
  }
  .result-actions > * {
    width: 100%;
  }
}
@media (prefers-reduced-motion: reduce) {
  .page-hero__orbit,
  .test-visual__orbit {
    animation: none;
  }
  .lesson-card,
  .theme-card,
  .test-progress span {
    transition: none;
  }
}

/* =========================================================
   CONTACT LINKS + LESSON CTA
   ========================================================= */
.contact-icon {
  display: block;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.contact-icon path:last-child {
  fill: currentColor;
  stroke: none;
}

.site-nav .nav-contact-link {
  gap: 9px;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.site-nav .nav-contact-link:hover {
  color: var(--color-accent);
  border-color: rgba(248, 168, 119, 0.55);
  background: rgba(248, 168, 119, 0.08);
}

.site-nav .nav-contact-link[aria-disabled="true"],
.footer-contact-link[aria-disabled="true"],
.contact-cta[aria-disabled="true"] {
  cursor: default;
}

.site-footer__links .footer-contact-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.footer-contact-link .contact-icon {
  width: 16px;
  height: 16px;
}

.lesson-next-step--contact {
  gap: 35px;
}

.lesson-next-step__actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.lesson-next-step .contact-cta {
  gap: 10px;
  color: var(--color-dark);
  background: var(--color-accent);
}

.lesson-next-step .contact-cta:hover {
  color: var(--color-white);
  background: var(--color-dark);
}

.lesson-next-step .contact-cta .contact-icon {
  width: 19px;
  height: 19px;
}

.lesson-next-step .lesson-test-cta {
  border: 1px solid rgba(45, 50, 80, 0.2);
  color: var(--color-dark);
}

.lesson-next-step .lesson-test-cta:hover {
  border-color: var(--color-dark);
  background: rgba(45, 50, 80, 0.06);
}

@media (max-width: 900px) {
  .lesson-next-step__actions {
    align-items: stretch;
  }
}

@media (max-width: 600px) {
  .site-nav .nav-contact-link {
    justify-content: flex-start;
  }

  .lesson-next-step__actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .lesson-next-step__actions .primary-btn,
  .lesson-next-step__actions .secondary-btn {
    width: 100%;
  }
}

/* MARYAM SARDAR — CSS-built brand mark */
.site-brand {
  gap: 12px;
}
.site-brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 0;
  color: #f8a877;
  overflow: visible;
}
.site-brand__monogram {
  position: relative;
  z-index: 2;
  font-family: var(--font-serif);
  font-size: 39px;
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.12em;
  color: #fff;
}
.site-brand__monogram span {
  color: var(--color-accent);
  font-style: italic;
}
.site-brand__book {
  position: absolute;
  left: 3px;
  right: 1px;
  bottom: 2px;
  height: 10px;
  border-bottom: 2px solid var(--color-accent);
  border-radius: 0 0 50% 50%;
  transform: perspective(30px) rotateX(18deg);
}
.site-brand__book::before,
.site-brand__book::after {
  content: "";
  position: absolute;
  bottom: -2px;
  width: 50%;
  height: 8px;
  border-top: 1px solid rgba(248, 168, 119, 0.85);
}
.site-brand__book::before {
  left: 0;
  transform: skewY(9deg);
}
.site-brand__book::after {
  right: 0;
  transform: skewY(-9deg);
}
.site-brand__text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.13em;
  line-height: 1.02;
}
.site-brand__text strong {
  color: var(--color-accent);
  font-weight: 500;
}
.site-brand__text small {
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.58);
  font-family: var(--font-sans);
  font-size: 7px;
  font-weight: 700;
  letter-spacing: 0.19em;
  white-space: nowrap;
}
.site-brand--footer .site-brand__mark {
  width: 42px;
  height: 42px;
}
.site-brand--footer .site-brand__monogram {
  font-size: 34px;
}
.site-brand--footer .site-brand__text {
  font-size: 15px;
}
.site-brand--footer .site-brand__text small {
  font-size: 6px;
}
@media (max-width: 600px) {
  .site-brand {
    gap: 8px;
  }
  .site-brand__mark {
    width: 41px;
    height: 43px;
  }
  .site-brand__monogram {
    font-size: 34px;
  }
  .site-brand__text {
    font-size: 14px;
    letter-spacing: 0.11em;
  }
  .site-brand__text small {
    font-size: 6px;
    letter-spacing: 0.14em;
  }
}