/* ========== Reset & Base ========== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --orange: #ff7a00;
  --orange-deep: #f83d01;
  --orange-soft: #fff1e8;
  --text-1: #111;
  --text-2: #333;
  --text-3: #666;
  --text-4: #999;
  --bg: #f5f6fa;
  --line: #eee;
  --dark: #0f0f1e;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 18px 40px rgba(255, 122, 0, 0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --container: 1200px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial,
    sans-serif;
  font-size: 14px;
  color: var(--text-1);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  border: 0;
}

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

ul,
li {
  list-style: none;
}

button {
  font-family: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 500;
  transition: transform var(--transition), box-shadow var(--transition),
    background var(--transition), color var(--transition);
  user-select: none;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(90deg, #fc480b 0%, #fc7300 100%);
  color: #fff;
  box-shadow: 0 10px 24px rgba(252, 72, 11, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(252, 72, 11, 0.4);
}

.btn--white {
  background: #fff;
  color: var(--orange);
  border: 2px solid #fff;
}

.btn--white:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(255, 255, 255, 0.25);
}

/* ========== Header ========== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: #fff;
  transition: box-shadow var(--transition);
}

.header.is-scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand__logo {
  width: 32px;
  height: 32px;
}

.brand__name {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-1);
}

.brand__sub {
  font-size: 12px;
  color: var(--text-4);
  letter-spacing: 2px;
}

.header__nav {
  display: flex;
  align-items: center;
  height: 100%;
  margin-left: 80px;
  gap: 40px;
}

.header__nav-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 100%;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-2);
  transition: color var(--transition);
}

.header__nav-item:hover {
  color: var(--orange);
}

.header__nav-item.is-active {
  color: var(--orange);
}

.header__nav-item.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 32px;
  height: 3px;
  background: var(--orange);
  border-radius: 3px;
  transform: translateX(-50%);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.header__phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 16px;
  border-radius: 999px;
  background: #f4f4f8;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
}

.header__phone img {
  width: 16px;
  height: 16px;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 120px;
  height: 42px;
  border-radius: 999px;
  background: var(--orange);
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  transition: transform var(--transition), box-shadow var(--transition);
}

.header__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(255, 122, 0, 0.35);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  height: 600px;
  background:
    linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.65) 0%,
      rgba(255, 255, 255, 0.25) 45%,
      rgba(255, 255, 255, 0) 70%
    ),
    url(./assets/images/FigmaDDSSlicePNG71ae724bba0121e0101e8f7653aa61c8.png)
      center center / cover no-repeat;
  overflow: hidden;
}

.hero__inner {
  --mx: 0;
  --my: 0;
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 30px;
  transform: translate3d(
    calc(var(--mx) * -10px),
    calc(var(--my) * -8px),
    0
  );
  transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero__title {
  font-size: 70px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-1);
  letter-spacing: 2px;
}

.hero__title span {
  display: block;
  opacity: 0;
  transform: translateY(40px);
  animation: hero-in 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.hero__title span:nth-of-type(1) {
  animation-delay: 0.15s;
}

.hero__title span:nth-of-type(2) {
  animation-delay: 0.32s;
}

.hero__title em {
  display: inline-block;
  position: relative;
  font-style: normal;
  color: var(--orange-deep);
  background: linear-gradient(
    90deg,
    #ff7a00 0%,
    #ffae3d 35%,
    #f83d01 65%,
    #ff7a00 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: hero-shine 4s linear infinite;
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1),
    filter 0.45s ease, letter-spacing 0.45s ease;
  cursor: default;
}

.hero__title em::after {
  content: "";
  position: absolute;
  left: 4%;
  right: 4%;
  bottom: -8px;
  height: 6px;
  border-radius: 6px;
  background: linear-gradient(90deg, #ff7a00 0%, #f83d01 100%);
  transform: scaleX(0);
  transform-origin: left center;
  opacity: 0.85;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.hero__title em:hover {
  transform: translateY(-6px) scale(1.08);
  letter-spacing: 4px;
  filter: drop-shadow(0 10px 18px rgba(248, 61, 1, 0.35));
}

.hero__title em:hover::after {
  transform: scaleX(1);
}

@keyframes hero-shine {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 200% 50%;
  }
}

@keyframes hero-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__subtitle {
  position: relative;
  margin-top: 24px;
  font-size: 26px;
  color: var(--text-2);
  letter-spacing: 1px;
  opacity: 0;
  transform: translateY(30px);
  animation: hero-in 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) 0.5s forwards;
}

.hero__subtitle::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 50%;
  width: 4px;
  height: 0;
  background: linear-gradient(180deg, var(--orange) 0%, var(--orange-deep) 100%);
  border-radius: 2px;
  transform: translateY(-50%);
  transition: height 0.5s ease, opacity 0.5s ease;
  opacity: 0;
}

.hero__subtitle:hover::before {
  height: 100%;
  opacity: 1;
}

.hero__subtitle:hover {
  color: var(--text-1);
}

.hero__btn {
  margin-top: 36px;
  height: 60px;
  padding: 0 36px;
  font-size: 22px;
  gap: 18px;
  opacity: 0;
  transform: translateY(30px);
  animation: hero-in 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) 0.7s forwards;
}

.hero__btn img {
  width: 22px;
  height: 18px;
}

/* ========== Anchor Nav ========== */
.anchor-nav {
  position: sticky;
  top: 72px;
  z-index: 90;
  background: #fff;
  box-shadow: 0 2px 6px rgba(114, 114, 114, 0.08);
}

.anchor-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: 80px;
}

.anchor-nav__item {
  position: relative;
  height: 100%;
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  font-size: 18px;
  color: var(--text-2);
  transition: color var(--transition);
}

.anchor-nav__item:hover {
  color: var(--orange);
}

.anchor-nav__item.is-active {
  color: var(--orange);
  font-weight: 600;
}

.anchor-nav__item.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 40px;
  height: 3px;
  background: var(--orange);
  border-radius: 3px;
  transform: translateX(-50%);
}

/* ========== Section base ========== */
.section {
  padding: 80px 0;
  background: #fff;
}

.section:nth-of-type(odd) {
  background: var(--bg);
}

.section__title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-1);
  text-align: center;
  margin-bottom: 50px;
  position: relative;
}

.section__title::after {
  content: "";
  display: block;
  width: 48px;
  height: 4px;
  margin: 16px auto 0;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-deep) 100%);
}

.section__title--left {
  text-align: left;
}

.section__title--left::after {
  margin: 16px 0 0;
}

/* ========== Intro ========== */
section.section.intro {
  background-color: #fff;
  background-image: url(./assets/images/bj.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 1200px auto;
}

.intro__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}

.stat {
  text-align: center;
  padding: 30px 10px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff 0%, #fff8f1 100%);
  transition: transform var(--transition), box-shadow var(--transition);
}

.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat__value {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
  color: var(--orange);
  line-height: 1;
}

.stat__value b {
  font-size: 56px;
  font-weight: 700;
  font-family: "D-DIN-PRO-Bold", "Helvetica Neue", Arial, sans-serif;
}

.stat__value i {
  font-style: normal;
  font-size: 20px;
  color: var(--text-2);
}

.stat__label {
  margin-top: 12px;
  font-size: 16px;
  color: var(--text-2);
}

.intro__card {
  display: grid;
  grid-template-columns: 647px 1fr;
  gap: 40px;
  align-items: center;
  padding: 30px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #fff7f0 0%, #ffe9d8 100%);
  box-shadow: var(--shadow-md);
}

.intro__img {
  width: 100%;
  height: 369px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

.intro__text {
  position: relative;
  padding: 20px 10px 20px 40px;
}

.intro__quote {
  position: absolute;
  top: -20px;
  left: 0;
  font-size: 80px;
  font-family: serif;
  color: var(--orange);
  opacity: 0.4;
  line-height: 1;
}

.intro__text p {
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.9;
  text-indent: 2em;
}

/* ========== Culture ========== */
.culture__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 27px;
}

.culture-card {
  position: relative;
  padding: 36px 30px 40px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  text-align: center;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.culture-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-top: 3px solid transparent;
  border-radius: var(--radius);
  transition: border-color var(--transition);
  pointer-events: none;
}

.culture-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.culture-card:hover::before {
  border-top-color: var(--orange);
}

.culture-card__icon {
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.culture-card__icon img {
  width: 118px;
  height: auto;
}

.culture-card__title {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 12px;
}

.culture-card__desc {
  font-size: 16px;
  color: var(--text-3);
}

/* ========== Future / Timeline ========== */
section.section.future {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(
      ellipse 900px 600px at 12% 18%,
      rgba(255, 122, 0, 0.22) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse 800px 600px at 90% 85%,
      rgba(72, 130, 255, 0.18) 0%,
      transparent 60%
    ),
    linear-gradient(135deg, #0a1024 0%, #131a37 45%, #0c1126 100%);
}

section.section.future::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(
    ellipse at center,
    #000 25%,
    transparent 82%
  );
  mask-image: radial-gradient(
    ellipse at center,
    #000 25%,
    transparent 82%
  );
  pointer-events: none;
  z-index: 0;
}

section.section.future::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(255, 122, 0, 0.4) 50%,
    transparent 100%
  );
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
}

section.section.future > .container {
  position: relative;
  z-index: 1;
}

section.section.future .section__title {
  color: #fff;
}

/* ----- Timeline color tweaks for dark background ----- */
.future .timeline-step__year {
  color: rgba(255, 255, 255, 0.4);
}

.future .timeline-step__label {
  color: rgba(255, 255, 255, 0.55);
}

.future .timeline-step:hover {
  color: var(--orange);
}

.future .timeline-step:hover .timeline-step__year {
  color: rgba(255, 255, 255, 0.85);
}

.future .timeline-step:hover .timeline-step__label {
  color: #fff;
}

.future .timeline-step.is-active .timeline-step__year {
  color: var(--orange);
}

.future .timeline-step.is-active .timeline-step__label {
  color: #fff;
}

.future .timeline-step__dot {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 122, 0, 0.55);
}

.future .timeline-step.is-active .timeline-step__dot {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 6px rgba(255, 122, 0, 0.18),
    0 0 22px rgba(255, 122, 0, 0.55);
}

.future .timeline__track {
  background: linear-gradient(
    90deg,
    rgba(255, 122, 0, 0.18) 0%,
    rgba(255, 122, 0, 0.28) 50%,
    rgba(255, 122, 0, 0.18) 100%
  );
}

.timeline {
  --steps: 3;
  --active: 0;
  --node: 14px;
  --rail-h: 2px;
  --rail-pad: 10px;
  --year-h: 56px;
  --row-gap: 18px;
}

.timeline__rail {
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--steps), 1fr);
  padding: var(--rail-pad) 0 60px;
}

.timeline__track {
  position: absolute;
  left: calc(100% / var(--steps) / 2);
  right: calc(100% / var(--steps) / 2);
  top: calc(
    var(--rail-pad) + var(--year-h) + var(--row-gap) + var(--node) / 2 -
      var(--rail-h) / 2
  );
  height: var(--rail-h);
  background: linear-gradient(
    90deg,
    rgba(255, 122, 0, 0.18) 0%,
    rgba(255, 122, 0, 0.28) 50%,
    rgba(255, 122, 0, 0.18) 100%
  );
  border-radius: var(--rail-h);
  z-index: 0;
}

.timeline__progress {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: calc(100% * (var(--active) / max(var(--steps) - 1, 1)));
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-deep) 100%);
  border-radius: inherit;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline__progress::after {
  content: "";
  position: absolute;
  right: -3px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange-deep);
  transform: translateY(-50%);
  box-shadow: 0 0 12px rgba(248, 61, 1, 0.55);
  opacity: 0;
  transition: opacity 0.4s;
}

.timeline.is-ready .timeline__progress::after {
  opacity: 1;
}

.timeline-step {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--row-gap);
  padding: 0;
  background: none;
  border: 0;
  cursor: pointer;
  color: var(--text-3);
  z-index: 2;
  transition: color var(--transition);
}

.timeline-step:focus-visible {
  outline: 2px dashed var(--orange);
  outline-offset: 8px;
  border-radius: 12px;
}

.timeline-step__year {
  height: var(--year-h);
  display: inline-flex;
  align-items: center;
  font-family: "D-DIN-PRO-Bold", "Helvetica Neue", Arial, sans-serif;
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-4);
  transition: color var(--transition), transform var(--transition);
}

.timeline-step__node {
  position: relative;
  width: var(--node);
  height: var(--node);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.timeline-step__dot {
  width: var(--node);
  height: var(--node);
  border-radius: 50%;
  background: #fff;
  border: 2px solid #ffc999;
  transition: background var(--transition), border-color var(--transition),
    transform var(--transition);
}

.timeline-step__node::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: rgba(255, 122, 0, 0.18);
  transform: scale(0);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-step__node::after {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 2px solid rgba(255, 122, 0, 0.35);
  opacity: 0;
}

.timeline-step__label {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-3);
  transition: color var(--transition), font-weight var(--transition);
}

.timeline-step:hover {
  color: var(--orange);
}

.timeline-step:hover .timeline-step__year {
  color: var(--text-2);
}

.timeline-step:hover .timeline-step__dot {
  border-color: var(--orange);
  transform: scale(1.15);
}

.timeline-step.is-active .timeline-step__year {
  color: var(--orange-deep);
  transform: translateY(-2px);
}

.timeline-step.is-active .timeline-step__dot {
  background: var(--orange);
  border-color: var(--orange);
  transform: scale(1.1);
}

.timeline-step.is-active .timeline-step__node::before {
  transform: scale(1);
}

.timeline-step.is-active .timeline-step__node::after {
  animation: timeline-ripple 1.6s ease-out infinite;
}

.timeline-step.is-active .timeline-step__label {
  color: var(--text-1);
  font-weight: 600;
}

@keyframes timeline-ripple {
  0% {
    transform: scale(1);
    opacity: 0.6;
  }
  100% {
    transform: scale(2.3);
    opacity: 0;
  }
}

.timeline__panels {
  position: relative;
  min-height: 240px;
  margin-top: 30px;
  padding: 50px 80px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(15, 15, 30, 0.06);
  overflow: hidden;
}

.timeline__panels::before {
  content: "";
  position: absolute;
  top: -10px;
  left: calc(
    (100% / var(--steps)) / 2 +
      (100% - 100% / var(--steps)) * (var(--active) / max(var(--steps) - 1, 1)) -
      10px
  );
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 4px 4px 0 0;
  transform: rotate(45deg);
  transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -2px -2px 6px rgba(15, 15, 30, 0.03);
}

.timeline__panels::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(255, 122, 0, 0.06) 0%,
    rgba(255, 122, 0, 0) 70%
  );
  pointer-events: none;
}

.timeline__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid #f0e0d2;
  color: var(--orange);
  font-size: 24px;
  line-height: 1;
  font-weight: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(255, 122, 0, 0.12);
  cursor: pointer;
  z-index: 3;
  transition: transform var(--transition), box-shadow var(--transition),
    background var(--transition), color var(--transition);
}

.timeline__nav--prev {
  left: 18px;
}

.timeline__nav--next {
  right: 18px;
}

.timeline__nav:hover {
  background: var(--orange);
  color: #fff;
  transform: translateY(-50%) scale(1.08);
  box-shadow: 0 10px 22px rgba(255, 122, 0, 0.28);
}

.timeline-panel {
  position: absolute;
  inset: 50px 80px;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 48px;
  align-items: center;
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  pointer-events: none;
}

.timeline-panel.is-active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.timeline-panel__icon {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fff7ef 0%, #ffe2cc 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: inset 0 -6px 18px rgba(255, 122, 0, 0.1);
}

.timeline-panel__icon::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 122, 0, 0.35);
}

.timeline-panel__icon img {
  width: 80px;
  height: 80px;
}

.timeline-panel__year {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-deep) 100%);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
  box-shadow: 0 8px 18px rgba(255, 122, 0, 0.25);
}

.timeline-panel__year::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  opacity: 0.9;
}

.timeline-panel__title {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.timeline-panel__desc {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-2);
  max-width: 640px;
}

/* ========== Values (accordion) ========== */
section.section.values {
  background: #fff;
}

.values__grid {
  display: flex;
  gap: 16px;
  height: 420px;
}

.value-card {
  position: relative;
  flex: 1 1 0;
  min-width: 96px;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  outline: none;
  color: #fff;
  transition: flex 0.7s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.4s ease;
}

.value-card.is-active {
  flex: 3 1 0;
  box-shadow: 0 20px 40px rgba(255, 122, 0, 0.25);
}

.value-card:focus-visible {
  box-shadow: 0 0 0 3px rgba(255, 122, 0, 0.6);
}

.value-card__bg {
  position: absolute;
  inset: 0;
  background-color: #1a1a2a;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 0.8s ease;
}

.value-card.is-active .value-card__bg {
  transform: scale(1);
}

.value-card__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(15, 15, 30, 0.35) 0%,
    rgba(15, 15, 30, 0.88) 100%
  );
}

.value-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
  opacity: 0;
  transition: opacity 0.55s ease;
}

.value-card.is-active .value-card__overlay {
  opacity: 1;
}

.value-card__content {
  position: relative;
  z-index: 1;
  height: 100%;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
}

.value-card__index {
  font-family: "D-DIN-PRO-Bold", "Helvetica Neue", Arial, sans-serif;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 2px;
  opacity: 0.55;
  transition: opacity 0.4s ease, font-size 0.4s ease;
}

.value-card.is-active .value-card__index {
  opacity: 1;
  font-size: 32px;
}

.value-card__main {
  margin-top: auto;
  transition: margin 0.5s ease;
}

.value-card.is-active .value-card__main {
  margin-top: 32px;
}

.value-card__quote {
  display: block;
  height: 0;
  margin-bottom: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 60px;
  line-height: 0.6;
  opacity: 0;
  overflow: hidden;
  transition: opacity 0.4s ease, height 0.45s ease, margin 0.45s ease;
}

.value-card.is-active .value-card__quote {
  height: 36px;
  margin-bottom: 14px;
  opacity: 0.85;
}

.value-card__title {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 1px;
  white-space: nowrap;
  transition: font-size 0.4s ease;
}

.value-card.is-active .value-card__title {
  font-size: 28px;
}

.value-card__desc {
  margin-top: 0;
  max-height: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.92);
  opacity: 0;
  transform: translateY(8px);
  overflow: hidden;
  transition: opacity 0.4s ease, max-height 0.5s ease,
    transform 0.4s ease, margin 0.4s ease;
}

.value-card.is-active .value-card__desc {
  margin-top: 14px;
  max-height: 120px;
  opacity: 1;
  transform: translateY(0);
}

.value-card__icon {
  width: 42px;
  height: 42px;
  margin-top: 18px;
  opacity: 0;
  transform: translateY(8px);
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.25));
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.value-card.is-active .value-card__icon {
  opacity: 1;
  transform: translateY(0);
}

/* ========== CTA Banner ========== */
.cta-banner {
  background: url(./assets/images/bj2.png) center / cover no-repeat;
  color: #fff;
}

.cta-banner__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 60px 20px;
  text-align: center;
}

.cta-banner__text h3 {
  font-size: 36px;
  font-weight: 600;
  margin-bottom: 12px;
}

.cta-banner__text p {
  font-size: 18px;
  opacity: 0.9;
}

.cta-banner--flush {
  margin-bottom: 0;
}

.cta-banner--flush + .footer,
.cta-banner--flush ~ .footer {
  margin-top: 0;
}

/* ========== Contact ========== */
.contact {
  background: var(--bg);
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 60px;
  align-items: center;
  background: #fff;
  padding: 60px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.contact__company {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-1);
  margin: 20px 0;
}

.contact__list {
  margin-bottom: 32px;
  text-align: left;
}

.contact__list li {
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 16px;
  color: var(--text-2);
  text-align: left;
}

.contact__list li span {
  flex: 0 0 auto;
  color: var(--text-4);
}

.contact__qr {
  text-align: center;
  padding: 24px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff7f0 0%, #fff 100%);
}

.contact__qr img {
  width: 220px;
  height: 220px;
  margin: 0 auto;
  object-fit: contain;
}

.contact__qr p {
  margin-top: 16px;
  font-size: 16px;
  color: var(--text-2);
}

/* ========== Footer ========== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 24px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__brand-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: #fff;
}

.footer__brand-top img {
  width: 36px;
  height: 36px;
}

.footer__brand-top span {
  font-size: 22px;
  font-weight: 600;
}

.footer__intro {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer__phone {
  font-size: 22px;
  font-weight: 700;
  color: var(--orange);
}

.footer__links h4 {
  font-size: 16px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 20px;
}

.footer__links a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  padding: 8px 0;
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--orange);
}

.footer__qr {
  text-align: center;
}

.footer__qr img {
  width: 140px;
  height: 140px;
  margin: 0 auto;
  border-radius: 8px;
  background: #fff;
  padding: 8px;
}

.footer__qr p {
  margin-top: 12px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

.footer__copy {
  text-align: center;
  margin-top: 24px;
  padding: 0 20px;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.4);
}

/* ========== Back to Top ========== */
.back-to-top {
  position: fixed;
  right: 32px;
  bottom: 48px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(255, 122, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: opacity var(--transition), transform var(--transition);
  z-index: 200;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--orange-deep);
  transform: translateY(-4px);
}

/* ========== Reveal animation ========== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Responsive — Tablet ( < 1024px )
   ============================================================ */
@media (max-width: 1024px) {
  .container {
    padding: 0 24px;
  }

  /* Header: shrink nav gap */
  .header__nav {
    margin-left: 32px;
    gap: 24px;
  }

  /* Hero */
  .hero {
    height: 480px;
  }
  .hero__title {
    font-size: 52px;
  }
  .hero__subtitle {
    font-size: 22px;
  }

  /* Anchor nav slightly smaller */
  .anchor-nav__item {
    font-size: 16px;
  }

  /* Section paddings */
  .section {
    padding: 60px 0;
  }
  .section__title {
    font-size: 30px;
    margin-bottom: 40px;
  }

  /* Intro */
  .intro__card {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .intro__img {
    height: 320px;
  }
  .intro__text {
    padding: 16px;
  }

  /* Culture */
  .culture__grid {
    gap: 16px;
  }

  /* Timeline */
  .timeline__panels {
    padding: 40px 60px;
  }
  .timeline-panel {
    inset: 40px 60px;
    grid-template-columns: 120px 1fr;
    gap: 28px;
  }
  .timeline-panel__icon {
    width: 120px;
    height: 120px;
  }
  .timeline-panel__icon img {
    width: 64px;
    height: 64px;
  }
  .timeline-panel__title {
    font-size: 24px;
  }

  /* Values — 2x2 grid */
  .values__grid {
    flex-wrap: wrap;
    height: auto;
  }
  .value-card {
    flex: 1 1 calc(50% - 8px);
    min-width: 0;
    height: 320px;
  }
  .value-card.is-active {
    flex: 1 1 calc(50% - 8px);
  }

  /* CTA */
  .cta-banner__inner {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }

  /* Contact */
  .contact__inner {
    grid-template-columns: 1fr;
    padding: 40px;
    gap: 32px;
  }

  /* Footer */
  .footer__inner {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 32px;
  }
}

/* ============================================================
   Responsive — Mobile ( < 768px )
   ============================================================ */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  /* ----- Header ----- */
  .header {
    height: 56px;
  }
  .header__inner {
    height: 56px;
  }
  .brand__name {
    font-size: 18px;
  }
  .brand__sub {
    display: none;
  }
  .header__nav {
    display: none;
  }
  .header__phone {
    display: none;
  }
  .header__cta {
    width: auto;
    height: 36px;
    padding: 0 16px;
    font-size: 14px;
  }

  /* ----- Hero ----- */
  .hero {
    height: 420px;
  }
  .hero__title {
    font-size: 38px;
    letter-spacing: 1px;
  }
  .hero__subtitle {
    font-size: 16px;
    margin-top: 20px;
  }
  .hero__btn {
    margin-top: 24px;
    height: 48px;
    padding: 0 24px;
    font-size: 16px;
  }
  .hero__inner {
    /* Disable parallax on mobile */
    transform: none !important;
  }

  /* ----- Anchor nav: horizontal scroll ----- */
  .anchor-nav {
    top: 56px;
  }
  .anchor-nav__inner {
    justify-content: flex-start;
    height: 56px;
    gap: 20px;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .anchor-nav__inner::-webkit-scrollbar {
    display: none;
  }
  .anchor-nav__item {
    flex-shrink: 0;
    font-size: 15px;
    height: 56px;
  }

  /* ----- Section base ----- */
  .section {
    padding: 48px 0;
  }
  .section__title {
    font-size: 24px;
    margin-bottom: 28px;
  }
  .section__title::after {
    width: 36px;
    height: 3px;
    margin-top: 12px;
  }

  /* ----- Intro ----- */
  section.section.intro {
    background-size: cover;
  }
  .intro__card {
    grid-template-columns: 1fr;
  }
  .intro__stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 32px;
  }
  .stat {
    padding: 18px 8px;
  }
  .stat__value b {
    font-size: 32px;
  }
  .stat__value i {
    font-size: 14px;
  }
  .stat__label {
    font-size: 13px;
    margin-top: 8px;
  }
  .intro__card {
    padding: 16px;
    gap: 16px;
  }
  .intro__img {
    height: 200px;
  }
  .intro__text {
    padding: 8px;
  }
  .intro__quote {
    font-size: 56px;
    top: -16px;
  }
  .intro__text p {
    font-size: 14px;
    line-height: 1.8;
  }

  /* ----- Culture ----- */
  .culture__grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .culture-card {
    padding: 28px 20px;
  }
  .culture-card__title {
    font-size: 20px;
  }
  .culture-card__desc {
    font-size: 14px;
  }

  /* ----- Future / Timeline ----- */
  section.section.future {
    padding: 48px 0;
  }
  .future .section__title {
    color: #fff;
  }
  .timeline {
    --year-h: 36px;
    --row-gap: 12px;
  }
  .timeline__rail {
    padding: 6px 0 30px;
  }
  .timeline-step__year {
    font-size: 24px;
  }
  .timeline-step__label {
    font-size: 12px;
    text-align: center;
  }
  .timeline__panels {
    padding: 24px 20px;
    min-height: auto;
    margin-top: 20px;
  }
  .timeline-panel {
    position: relative;
    inset: auto;
    grid-template-columns: 1fr;
    gap: 14px;
    text-align: center;
    transform: none;
  }
  .timeline-panel:not(.is-active) {
    display: none;
  }
  .timeline-panel__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
  }
  .timeline-panel__icon img {
    width: 48px;
    height: 48px;
  }
  .timeline-panel__title {
    font-size: 20px;
    margin-bottom: 8px;
  }
  .timeline-panel__desc {
    font-size: 14px;
  }
  .timeline__nav {
    width: 32px;
    height: 32px;
    font-size: 18px;
  }
  .timeline__nav--prev {
    left: 6px;
  }
  .timeline__nav--next {
    right: 6px;
  }

  /* ----- Values — vertical accordion ----- */
  .values__grid {
    flex-direction: column;
    flex-wrap: nowrap;
    height: auto;
  }
  .value-card {
    flex: 0 0 auto;
    width: 100%;
    height: 88px;
    min-width: 0;
    transition: height 0.55s cubic-bezier(0.4, 0, 0.2, 1),
      box-shadow 0.4s ease;
  }
  .value-card.is-active {
    flex: 0 0 auto;
    width: 100%;
    height: 260px;
  }
  .value-card__content {
    padding: 18px 20px;
  }
  .value-card__index {
    font-size: 22px;
  }
  .value-card.is-active .value-card__index {
    font-size: 24px;
  }
  .value-card__title {
    font-size: 18px;
  }
  .value-card.is-active .value-card__title {
    font-size: 22px;
  }
  .value-card__desc {
    font-size: 13px;
  }
  .value-card.is-active .value-card__desc {
    max-height: 140px;
  }

  /* ----- CTA banner ----- */
  .cta-banner__inner {
    flex-direction: column;
    gap: 18px;
    padding: 36px 16px;
    text-align: center;
  }
  .cta-banner__text h3 {
    font-size: 22px;
    margin-bottom: 8px;
  }
  .cta-banner__text p {
    font-size: 14px;
  }

  /* ----- Contact ----- */
  .contact__inner {
    padding: 24px;
    gap: 24px;
    border-radius: var(--radius);
  }
  .contact__company {
    font-size: 18px;
    margin: 12px 0;
  }
  .contact__list li {
    font-size: 14px;
    padding: 8px 0;
  }
  .contact__qr {
    padding: 16px;
  }
  .contact__qr img {
    width: 180px;
    height: 180px;
  }

  /* ----- Footer ----- */
  .footer {
    padding: 40px 0 calc(28px + env(safe-area-inset-bottom, 0px));
    overflow: visible;
  }
  .footer__inner {
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding-bottom: 28px;
    text-align: center;
  }
  .footer__brand,
  .footer__links,
  .footer__qr {
    width: 100%;
  }
  .footer__brand-top {
    justify-content: center;
  }
  .footer__intro {
    max-width: 100%;
    word-break: break-word;
  }
  .footer__links h4 {
    margin-bottom: 12px;
  }
  .footer__links a {
    padding: 6px 0;
  }
  .footer__qr {
    padding-top: 4px;
  }
  .footer__qr img {
    width: 120px;
    height: 120px;
  }
  .footer__copy {
    padding: 0 16px calc(8px + env(safe-area-inset-bottom, 0px));
    word-break: break-word;
  }

  /* ----- Back to top ----- */
  .back-to-top {
    right: 16px;
    bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
}

/* ============================================================
   Responsive — Small Phones ( < 480px )
   ============================================================ */
@media (max-width: 480px) {
  .hero__title {
    font-size: 32px;
  }
  .hero__subtitle {
    font-size: 14px;
  }
  .intro__stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat__value b {
    font-size: 28px;
  }
  .timeline-step__year {
    font-size: 20px;
  }
  .timeline-step__label {
    font-size: 11px;
  }
}