/* ===== CSS Variables ===== */
:root {
  --color-primary: #FF5722;
  --color-primary-light: #FF8A50;
  --color-primary-dark: #E64A19;
  --color-accent: #FF3D00;
  --color-dark: #0A0A14;
  --color-dark-secondary: #111122;
  --color-dark-tertiary: #1A1A30;
  --color-white: #FFFFFF;
  --color-gray-light: #A0A0B0;
  --color-gray: #666680;
  --color-border: rgba(255, 255, 255, 0.08);
  --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --container: 1200px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-main);
  color: var(--color-white);
  background: var(--color-dark);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Section ===== */
.section {
  padding: 120px 0;
  position: relative;
}

.section--dark {
  background: var(--color-dark-secondary);
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__label {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
  position: relative;
  padding-left: 48px;
}

.section__label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 36px;
  height: 2px;
  background: var(--color-primary);
  transform: translateY(-50%);
}

.section__label--light {
  color: var(--color-primary-light);
}

.section__label--light::before {
  background: var(--color-primary-light);
}

.section__title {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.5px;
}

.section__title--light {
  color: var(--color-white);
}

.text-accent {
  color: var(--color-primary);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 36px;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-main);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  letter-spacing: 0.5px;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(255, 87, 34, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 87, 34, 0.5);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
}

.nav--scrolled {
  background: rgba(10, 10, 20, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-white);
}

.nav__logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-sm);
  color: var(--color-white);
  font-size: 18px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-gray-light);
  transition: color var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav__link:hover {
  color: var(--color-white);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 10%, rgba(255, 87, 34, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 80%, rgba(255, 61, 0, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 80% 70%, rgba(255, 138, 80, 0.06) 0%, transparent 50%),
    var(--color-dark);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(255, 255, 255, 0.008) 2px,
      rgba(255, 255, 255, 0.008) 4px
    );
  pointer-events: none;
}

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

.hero__tag {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 6px;
  color: var(--color-primary-light);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.hero__title {
  font-size: clamp(40px, 8vw, 80px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.2s forwards;
}

.hero__title-accent {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  font-weight: 400;
  color: var(--color-gray-light);
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.6s forwards;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: 64px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.8s forwards;
}

.hero__stat {
  text-align: center;
}

.hero__stat-num {
  display: block;
  font-size: 40px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
}

.hero__stat-label {
  display: block;
  font-size: 13px;
  color: var(--color-gray-light);
  margin-top: 8px;
  letter-spacing: 1px;
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  animation: bounce 2s infinite;
  color: var(--color-gray-light);
  opacity: 0.6;
  transition: opacity var(--transition);
}

.hero__scroll:hover {
  opacity: 1;
  color: var(--color-primary);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-8px); }
  60% { transform: translateX(-50%) translateY(-4px); }
}

/* ===== About ===== */
.about__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
}

.about__company {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.about__text p {
  font-size: 16px;
  color: var(--color-gray-light);
  margin-bottom: 20px;
  line-height: 1.9;
}

.about__text strong {
  color: var(--color-white);
  font-weight: 600;
}

.about__visual {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about__card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.about__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.about__card:hover::before {
  transform: scaleX(1);
}

.about__card:hover {
  border-color: rgba(255, 87, 34, 0.3);
  transform: translateY(-4px);
}

.about__card-icon {
  font-size: 28px;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.about__card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.about__card p {
  font-size: 14px;
  color: var(--color-gray-light);
  line-height: 1.8;
}

/* ===== Features ===== */
.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(255, 87, 34, 0.08), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card:hover::after {
  opacity: 1;
}

.feature-card:hover {
  border-color: rgba(255, 87, 34, 0.4);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  color: var(--color-primary);
}

.feature-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card__desc {
  font-size: 14px;
  color: var(--color-gray-light);
  line-height: 1.8;
}

/* ===== Showcase ===== */
.showcase {
  background: var(--color-dark);
  overflow: hidden;
}

.showcase__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.showcase__title {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
}

.showcase__desc {
  font-size: 16px;
  color: var(--color-gray-light);
  line-height: 1.9;
  margin-bottom: 28px;
}

.showcase__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.showcase__list li {
  font-size: 15px;
  color: var(--color-gray-light);
  padding-left: 28px;
  position: relative;
}

.showcase__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 12px;
  height: 2px;
  background: var(--color-primary);
}

.showcase__visual {
  position: relative;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.showcase__shape {
  width: 280px;
  height: 360px;
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.15), rgba(255, 138, 80, 0.05));
  border: 1px solid rgba(255, 87, 34, 0.2);
  border-radius: 40% 60% 60% 40% / 40% 40% 60% 60%;
  animation: morph 8s ease-in-out infinite;
  display: flex;
  align-items: center;
  justify-content: center;
}

.showcase__shape::after {
  content: '';
  width: 160px;
  height: 220px;
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.25), rgba(255, 138, 80, 0.1));
  border-radius: 50% 50% 40% 60% / 60% 40% 50% 50%;
  border: 1px solid rgba(255, 87, 34, 0.3);
}

.showcase__shape--small {
  position: absolute;
  top: 10%;
  right: 5%;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.2), rgba(255, 61, 0, 0.1));
  border: 1px solid rgba(255, 87, 34, 0.3);
  border-radius: 60% 40% 50% 50% / 50% 60% 40% 50%;
  animation: morph 6s ease-in-out infinite reverse;
  height: auto;
}

@keyframes morph {
  0%, 100% { border-radius: 40% 60% 60% 40% / 40% 40% 60% 60%; }
  25% { border-radius: 60% 40% 50% 50% / 50% 60% 40% 50%; }
  50% { border-radius: 45% 55% 40% 60% / 60% 45% 55% 40%; }
  75% { border-radius: 55% 45% 60% 40% / 40% 55% 45% 60%; }
}

/* ===== Process ===== */
.process__timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}

.process__timeline::before {
  content: '';
  position: absolute;
  top: 42px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
  opacity: 0.3;
  z-index: 0;
}

.process__step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.process__step-num {
  display: inline-block;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--color-primary-light);
  margin-bottom: 16px;
}

.process__step-icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.1), rgba(255, 61, 0, 0.05));
  border: 2px solid rgba(255, 87, 34, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-light);
  transition: all var(--transition);
  position: relative;
  z-index: 1;
}

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

.process__step:hover .process__step-icon {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 0 40px rgba(255, 87, 34, 0.4);
  transform: scale(1.1);
}

.process__step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.process__step p {
  font-size: 14px;
  color: var(--color-gray-light);
  line-height: 1.8;
}

/* ===== Contact ===== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact__item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.contact__item-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.1), rgba(255, 61, 0, 0.05));
  border: 1px solid rgba(255, 87, 34, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.contact__item-icon svg {
  width: 22px;
  height: 22px;
}

.contact__item h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact__item p {
  font-size: 14px;
  color: var(--color-gray-light);
}

.contact__form {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact__form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact__input {
  width: 100%;
  padding: 14px 18px;
  font-size: 14px;
  font-family: var(--font-main);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  outline: none;
  transition: all var(--transition);
}

.contact__input::placeholder {
  color: var(--color-gray);
}

.contact__input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(255, 87, 34, 0.1);
}

.contact__textarea {
  resize: vertical;
  min-height: 120px;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-dark-secondary);
  border-top: 1px solid var(--color-border);
  padding: 40px 0 24px;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: flex-start;
  justify-content: space-between;
}

.footer__brand {
  max-width: 280px;
}

.footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-white);
}

.footer__brand p {
  font-size: 13px;
  color: var(--color-gray);
}

.footer__links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.footer__links a {
  font-size: 14px;
  color: var(--color-gray-light);
  transition: color var(--transition);
}

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

.footer__copy {
  width: 100%;
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  margin-top: 8px;
}

.footer__copy p {
  font-size: 13px;
  color: var(--color-gray);
}

/* ===== Scroll Reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process__timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 24px;
  }

  .process__timeline::before {
    display: none;
  }

  .showcase__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .showcase__visual {
    height: 300px;
    order: -1;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 320px;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    gap: 32px;
    background: rgba(10, 10, 20, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: right var(--transition);
    z-index: 1000;
  }

  .nav__links.active {
    right: 0;
  }

  .nav__toggle {
    display: flex;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .features__grid {
    grid-template-columns: 1fr;
  }

  .hero__stats {
    gap: 32px;
  }

  .hero__stat-num {
    font-size: 32px;
  }

  .process__timeline {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact__form-row {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer__links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }
}