/* ═══════════════════════════════════════════════
   IELTS STARTER — LANDING PAGE
   Style: Flow-inspired · Cream + Dark · Serif Editorial
   ═══════════════════════════════════════════════ */

/* ── DESIGN TOKENS ── */
:root {
  /* Colors */
  --cream:        #F5EDE0;
  --cream-dark:   #EDE3D4;
  --dark:         #1A1914;
  --dark-2:       #252420;

  --accent:       #7B5EA7;       /* lavender/purple */
  --accent-light: #C4A8D8;
  --accent-teal:  #2D5A3D;       /* forest green */
  --accent-teal-light: #4A8B62;

  --text-main:    #2A2820;
  --text-mid:     #6B6856;
  --text-light:   #9A9280;
  --text-cream:   #F5EDE0;
  --text-dark-mid:#B0AA9E;

  /* Typography */
  --font-serif:   'Playfair Display', Georgia, serif;
  --font-sans:    'Inter', system-ui, sans-serif;

  /* Spacing */
  --max-w:        1200px;
  --pad-x:        48px;

  /* Radius */
  --r-sm:   8px;
  --r-md:  16px;
  --r-lg:  28px;
  --r-pill: 100px;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html, body {
  font-family: var(--font-sans);
  background-color: var(--cream);
  background-image: radial-gradient(rgba(42,40,32,0.06) 2px, transparent 2px);
  background-size: 32px 32px;
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden; /* Cực kỳ quan trọng để chống tràn ngang */
  width: 100%;
  position: relative;
}

/* Fix chung cho tất cả các thẻ để không bao giờ tràn ngang */
* {
  max-width: 100vw;
}

/* Các thẻ tuyệt đối hoặc có width cố định phải được xử lý riêng */
.modal, .navbar, .site-footer, section {
  max-width: 100% !important;
}
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: all 0.22s ease;
  white-space: nowrap;
  text-decoration: none;
}

/* Lavender filled — primary action */
.btn--primary {
  background: var(--accent);
  color: #fff;
  padding: 14px 28px;
  font-size: 15px;
  letter-spacing: 0.01em;
  box-shadow: 0 2px 20px rgba(123,94,167,0.25);
}
.btn--primary:hover {
  background: #6A4D96;
  box-shadow: 0 4px 28px rgba(123,94,167,0.4);
  transform: translateY(-1px);
}

/* Outline — secondary */
.btn--secondary {
  background: transparent;
  color: var(--text-main);
  border: 1.5px solid rgba(42,40,32,0.25);
  padding: 13px 24px;
  font-size: 14px;
}
.btn--secondary:hover {
  border-color: var(--text-main);
  background: rgba(42,40,32,0.04);
}

/* Navbar CTA */
.btn--nav {
  background: var(--dark);
  color: var(--cream);
  padding: 10px 22px;
  font-size: 14px;
}
.btn--nav:hover {
  background: #2D2C26;
}

/* ════════════════════════════════════════
   NAVBAR
════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-x);
  height: 64px;
  background: rgba(245,237,224,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(42,40,32,0.08);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 18px;
  color: var(--text-main);
  font-weight: 700;
}
.navbar__logo em {
  font-style: italic;
  color: var(--accent);
}

.navbar__links {
  display: flex;
  gap: 32px;
}
.navbar__links a {
  font-size: 14px;
  color: var(--text-mid);
  transition: color 0.2s;
}
.navbar__links a:hover {
  color: var(--text-main);
}

/* ════════════════════════════════════════
   SECTION 1 — HERO
════════════════════════════════════════ */
.hero {
  padding: 120px var(--pad-x) 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px; /* Thu hẹp margin phía trên của video một cách rõ ràng */
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
}

/* ── Circular rotating text decoration ── */
.hero__circle-deco {
  position: absolute;
  left: -120px;
  top: 100px;
  width: 200px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.circle-svg {
  width: 200px;
  height: 200px;
  animation: rotateSlow 20s linear infinite;
  position: absolute;
}

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

.circle-text {
  font-size: 10.5px;
  fill: var(--text-mid);
  font-family: var(--font-sans);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.circle-center {
  font-size: 24px;
  color: var(--text-mid);
  position: relative;
  z-index: 1;
}

/* ── Hero Content ── */
.hero__content {
  padding-top: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__pre {
  font-size: 13px;
  font-family: var(--font-sans);
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 5.5vw, 5rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 32px;
  width: 100%;
}

/* "0" and "4 tháng" — italic serif, dark */
.hero__title em {
  font-style: italic;
  color: var(--text-main);
}

/* "6.0+" — bold, accented */
.hero__title strong {
  font-weight: 700;
  color: var(--accent);
  font-style: normal;
}

.hero__sub {
  font-size: 16px;
  color: var(--text-mid);
  line-height: 1.8;
  margin: 0 auto 40px;
  max-width: 500px;
}

.hero__cta-group {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.hero__note {
  font-size: 12.5px;
  color: var(--text-light);
  letter-spacing: 0.02em;
}

/* ── Hero Visual — Video Sales Letter (VSL) ── */
.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0;
  width: 100%; /* Ép chiều rộng để thẻ con max-width có thể bung hết cỡ */
}

/* ── Scrolling Arch Behind VSL ── */
.vsl-marquee {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100vw;
  height: 500px; /* Tăng theo viewBox */
  transform: translateY(-25%); /* Đẩy văn bản lên một tẹo cho cân đối */
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.marquee-text {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 700;
  text-transform: uppercase;
  fill: transparent;
  stroke: rgba(123,94,167,0.25);
  stroke-width: 1.5px;
  letter-spacing: 0.05em;
}

.vsl-wrapper {
  position: relative;
  width: 100%;
  max-width: 880px; /* Nhỏ lại một chút so với 1000px để trông vừa vặn hơn */
  margin: 0 auto;
  z-index: 10;
}

.vsl-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(42,40,32,0.12);
  background: var(--dark);
  cursor: pointer;
}

.vsl-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease, filter 0.3s ease;
  filter: brightness(0.85); /* Làm tối ảnh trực tiếp một chút */
}

.vsl-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to top, rgba(123, 94, 167, 0.5) 0%, rgba(0, 0, 0, 0.4) 100%);
  transition: background 0.3s ease;
}

.vsl-container:hover .vsl-cover {
  transform: scale(1.04);
}

.vsl-container:hover .vsl-overlay {
  background: linear-gradient(to top, rgba(123, 94, 167, 0.7) 0%, rgba(0, 0, 0, 0.5) 100%);
}

.vsl-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: var(--accent); /* Nổi bật hơn */
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 32px rgba(123,94,167,0.4);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.vsl-play-btn svg {
  margin-left: 4px;
}

.vsl-container:hover .vsl-play-btn {
  transform: translate(-50%, -50%) scale(1.1);
  background: #fff;
  color: #6A4D96;
}

.vsl-duration {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(26,25,20,0.7);
  color: #fff;
  font-size: 13px;
  font-family: var(--font-sans);
  font-weight: 500;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  backdrop-filter: blur(4px);
}

.vsl-caption {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
  font-size: 13.5px;
  color: var(--text-mid);
  font-weight: 500;
}

.vsl-pulse {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  position: relative;
}

.vsl-pulse::after {
  content: '';
  position: absolute;
  top: -4px; left: -4px; right: -4px; bottom: -4px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.4;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.5); opacity: 0.6; }
  100% { transform: scale(2.5); opacity: 0; }
}

/* ════════════════════════════════════════
   SECTION 2 — PAIN POINTS (Dark)
════════════════════════════════════════ */
.pain {
  background-color: var(--dark);
  background-image: radial-gradient(rgba(255,255,255,0.04) 2px, transparent 2px);
  background-size: 32px 32px;
  padding: 100px var(--pad-x) 0;
  position: relative;
}

.pain__container {
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: 80px;
}

.pain__header {
  text-align: center;
  margin-bottom: 60px;
}

.pain__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 4vw, 3.8rem);
  font-weight: 400;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.pain__title em {
  font-style: italic;
  color: var(--accent-light);
}

.pain__subtitle {
  font-size: 16px;
  color: var(--text-dark-mid);
}

.pain__accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pain__item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: all 0.3s ease;
}

.pain__item[open] {
  background: rgba(196,168,216,0.05);
  border-color: rgba(196,168,216,0.2);
}

.pain__question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 18px;
  color: #fff;
}
.pain__question::-webkit-details-marker { display: none; }

.pain__question > span {
  display: flex;
  align-items: center;
}

.pain__icon {
  margin-right: 14px;
  width: 28px;
  height: 28px;
  color: var(--accent-light);
  flex-shrink: 0;
}

.pain__toggle {
  position: relative;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}
.pain__toggle::before, .pain__toggle::after {
  content: '';
  position: absolute;
  background: var(--text-dark-mid);
  transition: all 0.3s ease;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.pain__toggle::before { width: 14px; height: 2px; }
.pain__toggle::after { height: 14px; width: 2px; }

.pain__item[open] .pain__toggle::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.pain__item[open] .pain__toggle::before { background: var(--accent-light); }

.pain__answer {
  padding: 0 32px 32px;
  font-size: 15.5px;
  color: var(--text-dark-mid);
  line-height: 1.8;
}

.pain__answer strong {
  color: #fff;
  font-weight: 500;
}

/* ── Bottom Truth ── */
.pain__truth {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px 0 80px;
  border-top: 1px solid rgba(255,255,255,0.07);
  text-align: center;
}

.pain__truth p {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
  max-width: 700px;
  margin: 0 auto;
}

.pain__truth em {
  font-style: italic;
  color: var(--accent-light);
}

/* ════════════════════════════════════════
   SECTION 3 — SOLUTION
════════════════════════════════════════ */
.solution {
  padding: 120px var(--pad-x);
  background-color: var(--cream);
  background-image: radial-gradient(rgba(42,40,32,0.05) 2px, transparent 2px);
  background-size: 32px 32px;
}

.solution__container {
  max-width: 1000px;
  margin: 0 auto;
}

.section-pre {
  font-size: 13px;
  font-family: var(--font-sans);
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 4vw, 3.8rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  color: var(--text-main);
}
.section-title em {
  font-style: italic;
  color: var(--accent);
}
.value-stack .section-title { color: #fff; }
.value-stack .section-title em { color: var(--accent-light); }

.solution__header {
  text-align: center;
  max-width: 1000px;
  margin: 0 auto 80px;
}

.solution__quote {
  margin-top: 24px;
  font-family: var(--font-sans);
  font-size: 20px;
  font-style: italic;
  font-weight: 500;
  color: var(--accent);
  padding: 16px 24px;
  border-left: 3px solid var(--accent);
  background: rgba(123,94,167,0.06);
  display: inline-block;
  border-radius: var(--r-md); /* Bo góc box */
}

/* ── Roadmap Grid Cards ── */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.roadmap-card {
  position: relative;
  background: rgba(123,94,167,0.02); /* Cực kỳ nhạt */
  border: 1px solid rgba(123,94,167,0.15); /* Viền mỏng, sắc nét */
  border-radius: var(--r-md);
  padding: 32px 24px;
  text-align: left;
  box-shadow: 0 4px 20px rgba(0,0,0,0.01);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}

.roadmap-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.rc__number {
  position: absolute;
  top: -10px;
  right: -10px;
  font-family: var(--font-serif);
  font-size: 80px;
  font-weight: 700;
  color: rgba(123,94,167,0.06);
  line-height: 1;
  pointer-events: none;
}

.rc__week {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 6px 12px;
  border-radius: var(--r-pill);
  margin-bottom: 20px;
}

.rc__desc {
  font-family: var(--font-sans);
  font-size: 15.5px;
  color: var(--text-mid);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.rc__desc strong {
  color: var(--text-main);
  font-weight: 700;
}

/* ════════════════════════════════════════
   SECTION 4 — VALUE STACK
════════════════════════════════════════ */
.value-stack {
  padding: 100px var(--pad-x) 120px;
  background-color: var(--dark);
  background-image: radial-gradient(rgba(255,255,255,0.04) 2px, transparent 2px);
  background-size: 32px 32px;
  color: #fff;
  position: relative;
}

.vs__container {
  max-width: 800px;
  margin: 0 auto;
}

.vs__header {
  text-align: center;
  margin-bottom: 60px;
}

.vs__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 48px;
}

.vs__item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 24px;
  border-radius: var(--r-md);
  transition: transform 0.2s;
}

.vs__item:hover { transform: translateY(-3px); }

.vs__item--bonus {
  border-color: rgba(196,168,216,0.2);
}

.vs__item--highlight {
  background: rgba(196,168,216,0.1);
  border-color: var(--accent-light);
}

.vs__icon {
  color: var(--accent-light);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.vs__item--bonus .vs__icon { color: #fff; }

.vs__text { flex-grow: 1; }

.vs__text h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.vs__text p {
  font-size: 14px;
  color: var(--text-dark-mid);
  line-height: 1.5;
}

.bonus-tag {
  background: var(--accent-light);
  color: #111;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.bonus-tag--red {
  background: #ff4757;
  color: #fff;
}

.vs__price {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 500;
  color: rgba(255,255,255,0.5);
  text-align: right;
  min-width: 100px;
}

.vs__summary {
  background: rgba(0,0,0,0.2);
  border: 1px dashed rgba(196,168,216,0.3);
  padding: 48px;
  border-radius: var(--r-md);
  text-align: center;
}

.vs__total-line {
  font-size: 20px;
  color: var(--text-dark-mid);
  margin-bottom: 12px;
}

.vs__old-value {
  text-decoration: line-through;
  opacity: 0.6;
  .roadmap-grid { grid-template-columns: 1fr; }
}

.vs__offer-line {
  font-size: 26px;
  color: #fff;
  margin-bottom: 16px;
}

.vs__new-value {
  font-size: 40px;
  font-weight: 700;
  color: var(--accent-light);
}

.vs__savings {
  display: inline-block;
  background: rgba(255,71,87,0.1);
  color: #ff4757;
  padding: 8px 20px;
  border-radius: var(--r-pill);
  font-weight: 600;
  margin-bottom: 40px;
  border: 1px solid rgba(255,71,87,0.2);
}

.vs__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.vs__timer {
  font-size: 13.5px;
  color: var(--text-dark-mid);
}

/* ════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════ */
@media (max-width: 900px) {
  :root { --pad-x: 24px; }

  .navbar__links { display: none; }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 100px;
    text-align: center;
    gap: 48px;
  }

  .hero__circle-deco { display: none; }

  .hero__pre { justify-content: center; }
  .hero__sub { margin: 0 auto 40px; }
  .hero__cta-group { justify-content: center; }

  .hero__visual { padding-top: 0; }

  .pain__question { font-size: 17px; padding: 20px; }
  .pain__answer { padding: 0 20px 24px; }
  
  .roadmap-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

/* ── Section 6: Testimonials Carousel ── */
.testimonials {
  padding: 120px 0;
  background-color: var(--cream);
  background-image: radial-gradient(rgba(42,40,32,0.05) 2px, transparent 2px);
  background-size: 32px 32px;
  overflow: hidden;
}

.testi__header {
  text-align: center;
  margin-bottom: 60px;
  padding: 0 var(--pad-x);
}
.testi__header .section-title { color: var(--text-main); }
.testi__header .section-pre { color: var(--accent); }

.testi__carousel {
  width: 100%;
  display: flex;
}

.testi__track {
  display: flex;
  gap: 32px;
  padding-left: 32px;
  animation: testiScroll 40s linear infinite;
}

@keyframes testiScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - 16px)); }
}

.testi__card {
  width: 400px;
  flex-shrink: 0;
  background: rgba(123,94,167,0.02); /* Style roadmap */
  border: 1px solid rgba(123,94,167,0.15); /* Style roadmap */
  padding: 40px;
  border-radius: var(--r-md);
  display: flex;
  flex-direction: column;
}

.testi__stars {
  color: #ffb800;
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
}

.testi__quote {
  font-family: var(--font-sans); /* Font không chân */
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  margin-bottom: 24px;
  flex-grow: 1;
}

.testi__author {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid rgba(123,94,167,0.1);
}

.testi__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  background: #eee;
}

.testi__meta strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}

.testi__meta span {
  font-size: 13px;
  color: var(--text-mid);
}

@media (max-width: 900px) {
  .testi__card { width: 320px; padding: 30px; }
}

/* ── Section 7: FAQ ── */
.faq {
  padding: 120px var(--pad-x);
  background-color: var(--dark);
  color: #fff;
  background-image: radial-gradient(rgba(255,255,255,0.03) 2px, transparent 2px);
  background-size: 40px 40px;
}

.faq__container {
  max-width: 800px;
  margin: 0 auto;
}

.faq__header {
  text-align: center;
  margin-bottom: 60px;
}
.faq__header .section-title { color: #fff; }
.faq__header .section-title em { color: var(--accent-light); font-style: italic; }
.faq__header .section-pre { color: var(--accent-light); }

.faq__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq__item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--r-md);
  overflow: hidden;
}

.faq__question {
  padding: 24px 32px;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s;
}

.faq__question:hover {
  background: rgba(255,255,255,0.05);
}

.faq__question::after {
  content: '+';
  font-size: 24px;
  font-weight: 300;
  color: var(--accent-light);
}

.faq__answer {
  padding: 0 32px 32px;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255,255,255,0.7);
}

/* ── Section 8: Final CTA Premium ── */
.final-cta {
  padding: 60px var(--pad-x) 120px;
  background-color: var(--dark);
  background-image: radial-gradient(rgba(255,255,255,0.03) 2px, transparent 2px);
  background-size: 32px 32px;
  position: relative;
  overflow: hidden;
}

/* Urgency Bar */
.fc__urgency-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,80,50,0.1);
  border: 1px solid rgba(255,80,50,0.25);
  color: #ff8066;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 100px;
  width: 100%;
  justify-content: center;
  margin-bottom: 12px;
  letter-spacing: 0.01em;
}

.fc__urgency-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff5032;
  animation: pulse-red 1.2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse-red {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.fc__timer {
  font-weight: 800;
  font-size: 16px;
  font-family: var(--font-sans);
  letter-spacing: 0.05em;
  color: #ff6b52;
}

.fc__container {
  max-width: 1100px;
  margin: 0 auto;
}

/* Main Card */
.fc__card {
  position: relative;
  background: linear-gradient(135deg, #1a1828 0%, #12111f 50%, #1a1828 100%);
  border: 1px solid rgba(123,94,167,0.3);
  border-radius: 40px;
  padding: 72px 64px;
  overflow: hidden;
  box-shadow: 0 60px 120px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.05) inset;
}

/* Animated border glow */
.fc__card::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 41px;
  background: linear-gradient(90deg, var(--accent), #a78bfa, var(--accent-light), var(--accent));
  background-size: 300% 100%;
  animation: borderGlow 4s linear infinite;
  z-index: -1;
}

@keyframes borderGlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

/* Glow orbs */
.fc__glow {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.fc__glow--left {
  background: rgba(123,94,167,0.18);
  top: -100px;
  left: -100px;
  animation: glowPulse 5s ease-in-out infinite alternate;
}

.fc__glow--right {
  background: rgba(196,168,216,0.1);
  bottom: -100px;
  right: -100px;
  animation: glowPulse 5s ease-in-out infinite alternate-reverse;
}

@keyframes glowPulse {
  from { opacity: 0.6; transform: scale(1); }
  to   { opacity: 1; transform: scale(1.15); }
}

/* Layout 2 cột */
.fc__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}

/* LEFT: Content */
.fc__left { text-align: left; }

.fc__pre-label {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent-light);
  margin-bottom: 20px;
}

.fc__headline {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3vw, 2.6rem);
  font-weight: 400;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 20px;
}

.fc__headline em {
  color: var(--accent-light);
  font-style: italic;
}

.fc__sub {
  font-family: var(--font-sans);
  font-size: 16px;
  color: rgba(255,255,255,0.55);
  line-height: 1.7;
  margin-bottom: 36px;
}

/* Checklist */
.fc__checklist {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.fc__check-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: 15px;
  color: rgba(255,255,255,0.8);
}

.fc__check-item svg {
  color: var(--accent-light);
  flex-shrink: 0;
}

/* RIGHT: Price Card */
.fc__price-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 28px;
  padding: 48px 40px;
  text-align: center;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.fc__price-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-light), transparent);
}

.fc__price-tag-badge {
  display: inline-block;
  background: rgba(123,94,167,0.25);
  border: 1px solid rgba(196,168,216,0.3);
  color: var(--accent-light);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.15em;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.fc__price-strike {
  font-family: var(--font-sans);
  font-size: 16px;
  color: rgba(255,255,255,0.35);
  margin-bottom: 8px;
}

.fc__price-strike s { text-decoration: line-through; }

.fc__price-big {
  font-family: var(--font-sans);
  font-size: 68px;
  font-weight: 900;
  color: #fff;
  line-height: 1;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: priceShimmer 3s ease-in-out infinite alternate;
}

@keyframes priceShimmer {
  from { filter: brightness(1); }
  to   { filter: brightness(1.2); }
}

.fc__saving-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,232,122,0.1);
  border: 1px solid rgba(0,232,122,0.3);
  color: #00e87a;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 32px;
}

/* CTA Button - pulse glow */
.fc__cta-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 18px 32px;
  background: linear-gradient(135deg, var(--accent) 0%, #a855f7 100%);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 800;
  border-radius: var(--r-pill);
  text-decoration: none;
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: btnPulse 2s ease-in-out infinite;
}

@keyframes btnPulse {
  0%, 100% { box-shadow: 0 8px 30px rgba(123,94,167,0.4); }
  50%       { box-shadow: 0 8px 50px rgba(168,85,247,0.7); }
}

.fc__cta-btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  animation: btnShine 2.5s ease-in-out infinite;
}

@keyframes btnShine {
  0%   { left: -100%; }
  50%  { left: 150%; }
  100% { left: 150%; }
}

.fc__cta-btn:hover {
  transform: translateY(-2px) scale(1.02);
}

.fc__cta-note {
  font-family: var(--font-sans);
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  margin-bottom: 24px;
}

/* Social proof */
.fc__social-proof {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.fc__avatars {
  display: flex;
}

.fc__avatars img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.1);
  margin-left: -8px;
  object-fit: cover;
}

.fc__avatars img:first-child { margin-left: 0; }

.fc__social-proof span {
  font-family: var(--font-sans);
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

@media (max-width: 900px) {
  .fc__layout { grid-template-columns: 1fr; gap: 48px; }
  .fc__left { text-align: center; }
  .fc__card { padding: 48px 32px; }
  .fc__price-big { font-size: 52px; }
}

.fc__card {
  background: var(--dark);
  color: #fff;
  border-radius: 40px;
  padding: 80px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 40px 100px rgba(0,0,0,0.2);
}

.fc__card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(123,94,167,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.fc__card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: radial-gradient(rgba(255,255,255,0.02) 2px, transparent 2px);
  background-size: 24px 24px;
}

.fc__content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.fc__content .section-pre {
  color: var(--accent-light);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}

.fc__content .section-title {
  color: #fff;
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 4vw, 3.8rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.fc__content .section-title em {
  color: var(--accent-light);
  font-style: italic;
}

.fc__text {
  font-family: var(--font-sans);
  font-size: 18px;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.6;
}

.fc__features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.fc__feature-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 32px 24px;
  border-radius: var(--r-md);
  transition: transform 0.3s ease, background 0.3s ease;
}

.fc__feature-item:hover {
  transform: translateY(-5px);
  background: rgba(255,255,255,0.08);
}

.fc__feature-icon {
  width: 52px;
  height: 52px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin: 0 auto 16px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.fc__feature-icon svg { width: 26px; height: 26px; }

.fc__feature-item p {
  color: #fff;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
}

.fc__price-wrap {
  margin-bottom: 48px;
}

.fc__price-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}

.fc__price-actual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.fc__price-label {
  font-family: var(--font-sans);
  font-size: 32px;
  color: #fff;
  font-weight: 500;
}

.fc__price-value {
  font-family: var(--font-sans);
  font-size: 72px;
  color: var(--accent-light);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.fc__price-old {
  font-family: var(--font-sans);
  font-size: 18px;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
  margin-bottom: 12px;
}

.strikethrough {
  text-decoration: line-through;
  opacity: 0.8;
}

.fc__savings-pill {
  display: inline-block;
  background: rgba(0, 255, 127, 0.08); /* Xanh lá nhạt */
  color: #00ff7f; /* Xanh lá sáng */
  border: 1px solid rgba(0, 255, 127, 0.3);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 32px;
  border-radius: 100px;
  margin-top: 8px;
}

@media (max-width: 600px) {
  .fc__price-label { font-size: 20px; }
  .fc__price-value { font-size: 48px; }
  .fc__savings-pill { font-size: 13px; padding: 10px 20px; }
}

.fc__footer {
  margin-top: 32px;
  font-family: var(--font-sans);
  font-size: 14px;
  color: rgba(255,255,255,0.4);
}

/* ── Footer Adjustment ── */
.site-footer {
  padding: 40px var(--pad-x);
  background: var(--dark);
  color: rgba(255,255,255,0.4);
}

.footer__container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer__logo {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.footer__logo em {
  font-style: italic;
  color: var(--accent-light);
}

.footer__copyright {
  font-family: var(--font-sans);
  font-size: 13px;
}

.footer__links {
  display: flex;
  gap: 24px;
}

.footer__links a {
  font-family: var(--font-sans);
  font-size: 13px;
  transition: color 0.2s;
}

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

.footer__contact {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-sans);
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}

.footer__contact a {
  transition: color 0.2s;
}

.footer__contact a:hover {
  color: #fff;
}

.footer__divider {
  opacity: 0.3;
}

@media (max-width: 900px) {
  .testi__grid { grid-template-columns: 1fr; }
  .fc__features { flex-direction: column; gap: 12px; align-items: center; }
  .fc__card { padding: 60px 40px; }
  .fc__price { font-size: 40px; }
}

@media (max-width: 600px) {
  .testimonials, .faq, .final-cta { padding: 80px var(--pad-x); }
  .fc__card { border-radius: 24px; padding: 40px 24px; }
}
/* ── Modals & Popups ── */
.modal {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal__overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(18,17,31,0.85);
  backdrop-filter: blur(12px);
}

.modal__content {
  position: relative;
  background: #ffffff;
  width: 90%;
  max-width: 480px;
  padding: 48px 40px;
  border-radius: 32px;
  box-shadow: 0 40px 100px rgba(0,0,0,0.5);
  transform: translateY(40px);
  transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  z-index: 2001;
}

.modal.active .modal__content {
  transform: translateY(0);
}

.modal__close {
  position: absolute;
  top: 24px; right: 24px;
  background: none;
  border: none;
  font-size: 32px;
  color: #333;
  cursor: pointer;
  line-height: 1;
  opacity: 0.3;
  transition: opacity 0.2s;
}

.modal__close:hover { opacity: 1; }

.modal__header { margin-bottom: 32px; text-align: center; }

.modal__title {
  font-family: var(--font-serif);
  font-size: 28px;
  color: #12111f;
  margin-bottom: 12px;
}

.modal__title em { color: var(--accent); font-style: italic; }

.modal__subtitle {
  font-family: var(--font-sans);
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

.modal__form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}

.form-group label {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: #12111f;
}

.form-group input {
  padding: 16px 20px;
  border: 2px solid #eee;
  border-radius: 12px;
  font-family: var(--font-sans);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
  background: #fcfcfc;
}

.form-group input:focus {
  border-color: var(--accent);
  background: #fff;
}

.modal__btn-submit {
  padding: 18px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-top: 10px;
  border: none;
  cursor: pointer;
}

.form-note {
  text-align: center;
  font-family: var(--font-sans);
  font-size: 12px;
  color: #999;
}

/* Success Modal View */
.modal__content--success {
  text-align: center;
  padding: 64px 40px;
}

.modal__success-icon {
  width: 80px;
  height: 80px;
  background: rgba(0,232,122,0.1);
  color: #00e87a;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 28px;
}

.modal__success-icon svg { width: 40px; height: 40px; }

.modal__message {
  font-family: var(--font-sans);
  font-size: 15px;
  color: #555;
  line-height: 1.8;
  margin-bottom: 36px;
}

.btn--full { width: 100%; display: flex; justify-content: center; }

/* ════════════════════════════════════════
   FINAL MOBILE OPTIMIZATION (Unified)
   ════════════════════════════════════════ */
@media (max-width: 768px) {
  :root {
    --pad-x: 20px;
  }

  body { font-size: 15px; }

  /* Navbar */
  .navbar { display: none !important; }

  /* Hero Section */
  .hero {
    padding: 60px 20px 60px;
    gap: 40px;
  }
  .hero__title {
    font-size: clamp(1.8rem, 8.5vw, 2.4rem); 
    line-height: 1.25;
    margin-bottom: 24px;
    text-align: center;
    word-wrap: break-word;
  }
  .hero__sub {
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 32px;
    padding: 0;
    br { display: none; }
  }
  .hero__cta-group {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 12px;
  }
  .btn {
    width: 100%;
    justify-content: center;
    padding: 16px 20px;
    font-size: 15px;
  }
  .hero__note { font-size: 11px; margin-top: 10px; }
  .vsl-marquee, .marquee-svg, .marquee-content { display: none !important; }
  .hero__circle-deco { display: none !important; }

  /* Pain Points */
  .pain__grid { grid-template-columns: 1fr; gap: 16px; }
  .pain__item { padding: 24px; }
  .pain__truth h3 { font-size: 24px; }

  /* Roadmap */
  .roadmap-grid { grid-template-columns: 1fr; gap: 20px; }
  .roadmap-item { padding: 32px 24px; }

  /* Value Stack */
  .value-stack { padding: 80px 20px; }
  .vs__item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
  }
  .vs__icon { width: 44px; height: 44px; }
  .vs__price { text-align: left; min-width: auto; font-size: 16px; margin-top: 8px; font-weight: 700; color: #fff; }
  .vs__summary { padding: 32px 20px; }
  .vs__new-value { font-size: 32px; }

  /* Testimonials */
  .testi__card { width: 280px; padding: 24px; }
  .testi__quote { font-size: 14px; }

  /* FAQ */
  .faq { padding: 80px 20px; }
  .faq__question { padding: 18px 20px; font-size: 15px; }
  .faq__answer { padding: 0 20px 20px; font-size: 14px; }

  /* Section 8 - Final CTA Card (MEGA CARD) */
  .final-cta { padding: 80px 20px; }
  .fc__card {
    padding: 40px 20px;
    border-radius: 24px;
    text-align: center;
  }
  .fc__layout { grid-template-columns: 1fr; gap: 32px; }
  .fc__headline {
    font-size: 26px !important;
    line-height: 1.25 !important;
    margin-bottom: 20px;
    height: auto !important;
  }
  .fc__price-big { font-size: 44px; }
  .fc__price-card { margin-top: 0; box-shadow: 0 10px 30px rgba(0,0,0,0.3); }
  .fc__timer-box { padding: 10px 16px; margin-bottom: 20px; }
  .fc__timer { font-size: 16px; }
  .fc__cta-btn { font-size: 15px; padding: 16px 20px; }

  /* Lead Modal */
  .modal__content {
    width: 92%;
    padding: 32px 20px;
    border-radius: 24px;
  }
  .modal__title { font-size: 22px; }
  .modal__subtitle { font-size: 13px; }
  .form-group label { font-size: 12px; }
  .modal__btn-submit { font-size: 14px; }
}