/* ==========================================================================
   UI/UX GUIDELINES & BLUEPRINT CHO TRANG GIỚI THIỆU - LEANDIGI
   ĐỒNG BỘ 100% THEO THÔNG SỐ VÀ HỆ THỐNG THIẾT KẾ CỦA TRANG CHỦ
   ========================================================================== */

:root {
  /* Core Design Tokens — Đồng bộ tuyệt đối với Trang Chủ, Contact & Case Studies */
  --paper: #fdfbf7;
  --white: #ffffff;
  --soft: #f4efe4;
  --soft-2: #ecebe5;
  --ink: #17130b;
  --muted: #665f55;
  --gold: #efc334;
  --gold-2: #efc334;
  --gold-dark: #d99f16;
  --gold-badge: #faecc1;
  --gold-glow: rgba(239, 195, 52, 0.28);
  --line: rgba(23, 19, 11, .14);
  --dark-bg: #111319;
  --container: 1280px;
  --pad: clamp(20px, 3vw, 32px);
  --radius: 26px;
  --ease: cubic-bezier(.2, .8, .2, 1);

  /* Legacy aliases for backward compatibility */
  --bg-light: var(--paper);
  --bg-dark: var(--dark-bg);
  --color-main: var(--gold);
  --color-secondary: var(--muted);
  --color-accent: var(--gold-dark);
  --text-color: var(--ink);
  --bg-gradient-light: linear-gradient(to bottom, #fefbf4, var(--paper));
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: "Roboto", Arial, system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

/* Typography Hierarchy (Roboto) */
h1, h2, h3, h4 {
  font-family: "Roboto", Arial, system-ui, sans-serif;
  font-weight: 800;
  color: inherit;
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.6rem, 5.2vw, 4.2rem);
  letter-spacing: -.04em;
}

h2 {
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  letter-spacing: -.03em;
}

h3 {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -.02em;
}

h4 {
  font-size: 1rem;
}

p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ==========================================================================
   CONTAINER & KHUNG NỘI DUNG TOÀN HỆ THỐNG
   Quy chuẩn Max-width 1280px & Padding đồng bộ 100% với Header và Trang Chủ
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* Section Headings */
.section-heading-center {
  text-align: center;
  max-width: 860px;
  margin-inline: auto;
  margin-bottom: 50px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--gold-dark);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-heading-center h2 {
  font-size: clamp(2rem, 3.8vw, 2.85rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.035em;
  color: var(--ink);
}

/* Base Buttons — Đồng bộ 100% kích thước với hệ thống Button 2026 của Trang Chủ */
.button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  min-height: 68px;
  padding: 0 18px 0 30px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  font-family: "Roboto", Arial, system-ui, sans-serif;
  cursor: pointer;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s ease, color .2s ease;
}

.button:hover,
.btn:hover,
.btn-cta-giant:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(180, 128, 0, .24);
}

.button-gold,
.btn-primary {
  background: var(--gold);
  color: var(--ink);
}

.button-gold:hover,
.btn-primary:hover {
  background: var(--gold);
  color: var(--ink);
}

.button-gold .arrow,
.btn-cta-giant .arrow,
.btn .arrow {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  border-radius: 50%;
  background: rgba(10, 10, 10, .13);
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1;
  color: var(--ink);
  transition: transform .2s var(--ease);
}

.button:hover .arrow,
.btn:hover .arrow,
.btn-cta-giant:hover .arrow {
  transform: translateX(3px);
}

/* ==========================================================================
   1. HERO SECTION (Dark Mode: #111319 / var(--dark-bg))
   ========================================================================== */
.about-hero {
  background-color: #030712;
  color: #ffffff;
  padding-top: clamp(140px, 12vw, 175px);
  padding-bottom: clamp(40px, 6vw, 68px);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

/* Background Visuals: High-Tech Diagonal Prismatic Beams (Chuẩn theo mẫu tham chiếu SOFAR) */
.hero-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background: radial-gradient(ellipse 70% 60% at 85% 35%, #051937 0%, #030a17 55%, #02050d 100%);
}

/* Ambient Diffuse Aurora on Top Left */
.hero-aurora-teal-topleft {
  position: absolute;
  top: -120px;
  left: -100px;
  width: clamp(450px, 50vw, 750px);
  height: clamp(350px, 45vw, 600px);
  background: radial-gradient(circle, rgba(16, 185, 129, 0.18) 0%, rgba(6, 182, 212, 0.12) 35%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
}

/* Ambient Electric Blue Glow on Right behind the beams */
.hero-aurora-blue-right {
  position: absolute;
  top: 10%;
  right: -80px;
  width: clamp(500px, 55vw, 850px);
  height: clamp(500px, 55vw, 850px);
  background: radial-gradient(circle, rgba(14, 165, 233, 0.25) 0%, rgba(37, 99, 235, 0.18) 40%, transparent 75%);
  filter: blur(95px);
  pointer-events: none;
}

/* Full SVG Canvas for Diagonal Prismatic Beams */
.hero-beams-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* Gentle energy pulse / shimmer on the beams */
.beam-ribbon {
  animation: hero-beam-pulse 8s ease-in-out infinite alternate;
}

.ribbon-1 { animation-delay: 0s; }
.ribbon-2 { animation-delay: 1.5s; }
.ribbon-3 { animation-delay: 3s; }
.ribbon-4 { animation-delay: 4.5s; }

@keyframes hero-beam-pulse {
  0% { opacity: 0.75; }
  100% { opacity: 0.92; }
}

/* Laser Streaks Pulse */
.beam-laser {
  animation: hero-laser-pulse 4.5s ease-in-out infinite alternate;
}

.laser-1 { animation-delay: 0s; }
.laser-2 { animation-delay: 1.2s; }
.laser-3 { animation-delay: 2.4s; }
.laser-4 { animation-delay: 3.6s; }

@keyframes hero-laser-pulse {
  0% { opacity: 0.75; }
  100% { opacity: 1; }
}

/* Speed Glints Floating Glare */
.glint-1 {
  animation: hero-glint-move 5s ease-in-out infinite alternate;
}

.glint-2 {
  animation: hero-glint-move 6s ease-in-out infinite alternate-reverse;
}

@keyframes hero-glint-move {
  0% { transform: translateY(0); opacity: 0.7; }
  100% { transform: translateY(40px); opacity: 1; }
}

/* Vignette ensuring clean typography readability */
.hero-beams-vignette {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(2, 5, 13, 0.85) 0%, rgba(2, 5, 13, 0.45) 45%, transparent 75%);
  pointer-events: none;
  z-index: 2;
}

.hero-container {
  position: relative;
  z-index: 2;
  width: 100%;
}

/* 2-Column Grid Layout */
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(36px, 5vw, 68px);
  align-items: center;
}

.hero-col-content {
  text-align: left;
}

.hero-col-content h1 {
  color: #ffffff;
  font-size: clamp(2.4rem, 4.2vw, 3.8rem);
  line-height: 1.1;
  letter-spacing: -.035em;
  margin-bottom: 22px;
}

.hero-col-content h1 .text-gold,
.hero-col-content h1 span {
  color: var(--gold, #efc334);
}

.hero-col-content .hero-sub {
  color: rgba(255, 255, 255, .72);
  font-size: clamp(1rem, 1.25vw, 1.15rem);
  line-height: 1.7;
  max-width: 580px;
  margin: 0 0 36px;
  font-weight: 400;
}

.hero-col-content .hero-actions {
  margin-bottom: 0;
}

/* Visual: Logo Favicon in White Circle Box with Ripple Waves */
.hero-col-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-ripple-container {
  position: relative;
  width: clamp(280px, 34vw, 380px);
  height: clamp(280px, 34vw, 380px);
  display: grid;
  place-items: center;
}

.hero-logo-box {
  position: relative;
  z-index: 5;
  width: clamp(120px, 13vw, 150px);
  height: clamp(120px, 13vw, 150px);
  border-radius: 50%;
  background: #ffffff;
  display: grid;
  place-items: center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .2), inset 0 2px 4px rgba(255, 255, 255, .8);
  transition: transform .3s var(--ease);
}

.hero-logo-box:hover {
  transform: scale(1.04);
}

.hero-logo-icon {
  width: clamp(56px, 6.5vw, 76px);
  height: auto;
  max-height: 80px;
  object-fit: contain;
  display: block;
}

/* Ripple wave rings */
.ripple-wave {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid rgba(239, 195, 52, .45);
  box-shadow: 0 0 24px rgba(239, 195, 52, .12), inset 0 0 24px rgba(239, 195, 52, .06);
  pointer-events: none;
  animation: hero-ripple-pulse 4.4s cubic-bezier(.25, .8, .25, 1) infinite;
}

.rw-1 { animation-delay: 0s; }
.rw-2 { animation-delay: 1.1s; }
.rw-3 { animation-delay: 2.2s; }
.rw-4 { animation-delay: 3.3s; }

@keyframes hero-ripple-pulse {
  0% {
    width: clamp(120px, 13vw, 150px);
    height: clamp(120px, 13vw, 150px);
    opacity: .95;
    border-color: rgba(239, 195, 52, .55);
    transform: scale(1);
  }
  50% {
    opacity: .45;
    border-color: rgba(239, 195, 52, .3);
  }
  100% {
    width: 100%;
    height: 100%;
    opacity: 0;
    border-color: rgba(239, 195, 52, 0);
    transform: scale(1.08);
  }
}

/* Social Proof: Partner Logos Bar in Hero */
.hero-partners-wrap {
  margin-top: clamp(60px, 7vw, 92px);
  width: 100%;
  text-align: center;
  border-top: none;
  padding-top: 16px;
}

.hero-partners-title {
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  font-weight: 700;
  color: rgba(255, 255, 255, .48);
  margin-bottom: 26px;
}

.hero-partners-wrap .customer-slider.marquee {
  position: relative;
  overflow: hidden;
  width: 100%;
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}

.hero-partners-wrap .marquee-track {
  display: flex;
  width: max-content;
  animation: customer-marquee 36s linear infinite;
  will-change: transform;
}

.hero-partners-wrap .customer-slider:hover .marquee-track {
  animation-play-state: paused;
}

.hero-partners-wrap .marquee-group {
  display: flex;
  align-items: center;
  gap: 60px;
  padding-right: 60px;
}

.hero-partners-wrap .marquee-group img {
  height: 48px;
  max-width: 150px;
  width: auto;
  object-fit: contain;
  opacity: .55;
  filter: brightness(0) invert(1);
  transition: opacity .25s var(--ease), filter .25s var(--ease);
}

.hero-partners-wrap .marquee-group img:hover {
  opacity: 1;
  filter: brightness(1) invert(0);
}

@keyframes customer-marquee {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* Mobile & Tablet responsive for Hero */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 42px;
  }
  .hero-col-content {
    text-align: center;
  }
  .hero-col-content .hero-sub {
    margin-inline: auto;
  }
  .hero-ripple-container {
    width: 320px;
    height: 320px;
  }
}

@media (max-width: 680px) {
  .about-hero {
    padding-top: 130px;
    padding-bottom: 36px;
  }
  .hero-ripple-container {
    width: 260px;
    height: 260px;
  }
  .hero-logo-box {
    width: 105px;
    height: 105px;
  }
  .hero-logo-icon {
    width: 50px;
  }
  .hero-partners-wrap {
    margin-top: 48px;
    padding-top: 28px;
  }
  .hero-partners-wrap .marquee-group {
    gap: 40px;
    padding-right: 40px;
  }
  .hero-partners-wrap .marquee-group img {
    height: 40px;
    max-width: 120px;
  }
}

/* ==========================================================================
   SECTION HEADINGS & KICKERS (Unified Style)
   ========================================================================== */
.section-heading-center {
  text-align: center;
  max-width: 820px;
  margin: 0 auto clamp(40px, 5vw, 64px);
}

.section-kicker {
  display: inline-block;
  color: var(--gold-dark);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-heading-center h2 {
  font-size: clamp(2rem, 3.8vw, 3rem);
  font-weight: 900;
  letter-spacing: -.025em;
  color: var(--ink);
  line-height: 1.2;
  text-transform: uppercase;
  margin: 0;
}

/* ==========================================================================
   2. SỨ MỆNH & CÂU CHUYỆN (Story - Z-pattern: Trái ảnh Villa - Phải 4 Chỉ số)
   ========================================================================== */
.story-section {
  background: radial-gradient(circle at 10% 40%, rgba(248, 237, 203, .28) 0%, transparent 50%), transparent;
  padding: clamp(70px, 8vw, 110px) 0;
}

.story-container {
  display: flex;
  flex-direction: column;
  gap: clamp(54px, 7vw, 84px);
}

.story-z-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}

.z-right-image {
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
}

.story-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(23, 19, 11, .06);
  border: 1px solid rgba(23, 19, 11, .07);
  background: var(--white);
}

/* Media ảnh phong cảnh/thực tế (Villa Leandigi): Không hover zoom */
.story-media:not(.media-icon-card) img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.story-media figcaption {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(0, 0, 0, .5);
  color: #ffffff;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 700;
  backdrop-filter: blur(8px);
}

/* 4-Stat Box in Story Section (Replacing former logo emblem) */
.story-stats-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid rgba(23, 19, 11, .08);
  box-shadow: 0 20px 50px rgba(23, 19, 11, .06);
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
}

.story-stat-item {
  padding: clamp(26px, 3.2vw, 38px) clamp(22px, 2.6vw, 32px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: background .2s ease;
}

.story-stat-item:hover {
  background: rgba(239, 195, 52, .03);
}

.story-stat-item:nth-child(1) {
  border-right: 1px solid rgba(23, 19, 11, .08);
  border-bottom: 1px solid rgba(23, 19, 11, .08);
}

.story-stat-item:nth-child(2) {
  border-bottom: 1px solid rgba(23, 19, 11, .08);
}

.story-stat-item:nth-child(3) {
  border-right: 1px solid rgba(23, 19, 11, .08);
}

.story-stat-num {
  font-size: clamp(2.3rem, 3.6vw, 3.1rem);
  font-weight: 900;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}

.story-stat-num span {
  color: var(--gold-dark);
}

.story-stat-label {
  margin: 8px 0 0;
  font-size: .9rem;
  line-height: 1.5;
  color: var(--muted);
  font-weight: 500;
}

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

.story-tag-pill {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  background: var(--gold-badge);
  color: #7a5e1b;
  font-size: .76rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.story-desc h3 {
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
  font-weight: 800;
  color: var(--ink);
  line-height: 1.25;
  letter-spacing: -.025em;
  margin: 4px 0 0;
}

.story-desc p {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.75;
  margin: 0;
}

/* ==========================================================================
   4. HÀNH TRÌNH PHÁT TRIỂN (Timeline - Trục thời gian hiện đại)
   ========================================================================== */
.timeline-section {
  background: transparent;
  padding: clamp(70px, 8vw, 110px) 0;
}

.timeline-flow {
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline-flow::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(to bottom, var(--gold), rgba(239, 195, 52, .2));
  transform: translateX(-50%);
  border-radius: 2px;
}

.timeline-node {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 54px;
  width: 100%;
}

.timeline-node:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: 50%;
  top: 26px;
  transform: translateX(-50%);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gold);
  border: 4px solid #ffffff;
  box-shadow: 0 0 0 2px var(--gold-dark), 0 4px 12px rgba(239, 195, 52, .35);
  z-index: 2;
}

.timeline-card {
  width: calc(50% - 48px);
  background: var(--white);
  border: 1px solid rgba(23, 19, 11, .08);
  border-radius: 22px;
  padding: 32px 30px;
  box-shadow: 0 16px 36px rgba(23, 19, 11, .04);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
}

.timeline-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 50px rgba(23, 19, 11, .08);
  border-color: rgba(239, 195, 52, .5);
}

.timeline-node:nth-child(odd) .timeline-card {
  margin-right: auto;
  text-align: left;
}

.timeline-node:nth-child(even) .timeline-card {
  margin-left: auto;
  text-align: left;
}

.timeline-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.timeline-year {
  display: inline-block;
  background: var(--gold-badge);
  color: #7a5e1b;
  font-size: .85rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: .02em;
}

.timeline-badge {
  font-size: .78rem;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .1em;
}

.timeline-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 10px;
  line-height: 1.35;
}

.timeline-card p {
  color: var(--muted);
  font-size: .98rem;
  line-height: 1.7;
  margin: 0;
}

.timeline-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 6px 16px;
  background: rgba(239, 195, 52, .14);
  border-radius: 999px;
  font-size: .82rem;
  font-weight: 700;
  color: #7a5e1b;
}

/* ==========================================================================
   5. GIÁ TRỊ CỐT LÕI (Cards - Lưới 3 cột phong cách hiện đại)
   ========================================================================== */
.beliefs-section {
  background: radial-gradient(circle at 85% 60%, rgba(246, 230, 185, .35) 0%, transparent 50%), transparent;
  padding: clamp(70px, 8vw, 110px) 0;
}

.belief-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.5vw, 32px);
}

.belief-card {
  background: var(--white);
  border-radius: 24px;
  padding: 40px 32px;
  box-shadow: 0 16px 40px rgba(23, 19, 11, .04);
  border: 1px solid rgba(23, 19, 11, .08);
  display: flex;
  flex-direction: column;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
}

.belief-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 50px rgba(23, 19, 11, .08);
  border-color: rgba(239, 195, 52, .5);
}

.belief-highlight {
  border-color: rgba(239, 195, 52, .3);
}

.belief-icon-badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gold-badge);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin-bottom: 24px;
  box-shadow: 0 6px 18px rgba(239, 195, 52, .24);
  transition: transform .25s ease;
  flex-shrink: 0;
}

.belief-card:hover .belief-icon-badge {
  transform: translateY(-2px);
}

.belief-icon-badge img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  display: block;
}

.belief-body h3 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: -.02em;
}

.belief-body p {
  color: var(--muted);
  font-size: .98rem;
  line-height: 1.7;
  margin: 0;
}

/* ==========================================================================
   6. CTA CUỐI TRANG (Dark Mode Banner: Đồng bộ phong cách Case Studies & Hero)
   ========================================================================== */
.about-cta-section {
  padding: clamp(60px, 8vw, 110px) 0;
  background: transparent;
}

.about-cta-card {
  background: var(--dark-bg);
  border-radius: 30px;
  padding: clamp(48px, 6vw, 76px) clamp(24px, 5vw, 64px);
  text-align: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .2);
}

.about-cta-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, rgba(239, 195, 52, .16) 0%, transparent 70%);
  pointer-events: none;
}

.about-cta-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin-inline: auto;
}

.about-cta-kicker {
  display: inline-block;
  color: var(--gold);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.about-cta-card h2 {
  color: #ffffff;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  letter-spacing: -.025em;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
}

.about-cta-desc {
  color: rgba(255, 255, 255, .75);
  font-size: clamp(.98rem, 1.25vw, 1.1rem);
  line-height: 1.65;
  max-width: 600px;
  margin: 0 auto 28px;
}

.about-cta-channels {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-bottom: 34px;
  font-size: .95rem;
  color: rgba(255, 255, 255, .85);
}

.about-cta-channels strong {
  color: #ffffff;
}

.about-cta-channels a {
  color: var(--gold);
  text-decoration: none;
  transition: opacity .2s;
}

.about-cta-channels a:hover {
  opacity: .85;
}

.btn-cta-gold {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  min-height: 56px;
  padding: 0 16px 0 30px;
  border-radius: 999px;
  background: var(--gold);
  color: #0a0a0a;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
  box-shadow: 0 6px 20px rgba(239, 195, 52, .4);
}

.btn-cta-gold:hover {
  transform: translateY(-2px);
  background: #f4ca3b;
  box-shadow: 0 10px 28px rgba(239, 195, 52, .55);
}

.btn-cta-gold .arrow-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(10, 10, 10, .14);
  display: grid;
  place-items: center;
  font-size: 1.15rem;
  line-height: 1;
  transition: transform .2s ease;
}

.btn-cta-gold:hover .arrow-circle {
  transform: translateX(3px);
}

/* ==========================================================================
   MOTION REVEAL & ACCESSIBILITY
   ========================================================================== */
.skip-link {
  position: fixed;
  z-index: 999;
  top: 10px;
  left: 10px;
  padding: 10px 18px;
  background: var(--gold);
  color: var(--ink);
  font-weight: 700;
  transform: translateY(-160%);
  border-radius: 8px;
}

.skip-link:focus {
  transform: none;
}

.reveal {
  opacity: 1;
  transform: none;
}

.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .65s var(--ease), transform .65s var(--ease);
}

.js .reveal.visible {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 1024px) {
  .story-z-block,
  .z-right-image {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .z-right-image .story-desc {
    order: 1;
  }
  .z-right-image .story-stats-card {
    order: 2;
  }
  .belief-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .timeline-flow::before {
    left: 20px;
  }
  .timeline-marker {
    left: 20px;
  }
  .timeline-card {
    width: calc(100% - 50px);
    margin-left: 50px !important;
    margin-right: 0 !important;
    padding: 24px;
  }
}

@media (max-width: 640px) {
  .story-stats-card {
    grid-template-columns: 1fr;
  }
  .story-stat-item:nth-child(1),
  .story-stat-item:nth-child(2),
  .story-stat-item:nth-child(3) {
    border-right: none;
    border-bottom: 1px solid rgba(23, 19, 11, .08);
  }
  .belief-card {
    padding: 30px 22px;
  }
  .about-cta-channels {
    flex-direction: column;
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  .js .reveal {
    opacity: 1;
    transform: none;
  }
  .marquee-track {
    animation: none;
  }
}