:root {
  --ink: #092016;
  --green: #4f684d;
  --green-dark: #092016;
  --lime: #eaf8db;
  --cream: #f6f0e5;
  --white: #ffffff;
  --line: rgba(9, 32, 22, 0.16);
  --font-tc: "Noto Sans TC", system-ui, sans-serif;
  --font-en: "Inter", "Noto Sans TC", system-ui, sans-serif;
  --font-display: "Noto Serif TC", "Noto Sans TC", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--lime);
  font-family: var(--font-tc);
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

video,
iframe {
  display: block;
}

video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #101710;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: grid;
  grid-template-columns: minmax(220px, 0.8fr) auto;
  align-items: center;
  min-height: 70px;
  padding: 0 28px;
  color: var(--ink);
  background: rgba(246, 240, 229, 0.84);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 46px;
  height: 46px;
  object-fit: cover;
  border-radius: 999px;
  box-shadow: 0 0 0 1px rgba(9, 32, 22, 0.18);
}

.brand strong {
  display: block;
  font-family: var(--font-en);
  font-size: 17px;
  font-style: italic;
  font-weight: 900;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: rgba(9, 32, 22, 0.68);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  font-weight: 800;
}

.nav-cta,
.button.primary {
  color: var(--white);
  background: var(--green-dark);
}

.nav-cta {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 20px;
}

.menu-toggle {
  display: none;
  justify-self: end;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 6px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: 760px;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 112px 24px 70px;
  text-align: center;
  background: var(--cream);
}

.hero-video,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-video {
  z-index: 0;
  opacity: 0.88;
}

.hero-overlay {
  z-index: 1;
  background:
    linear-gradient(rgba(246, 240, 229, 0.16), rgba(246, 240, 229, 0.24)),
    radial-gradient(circle at 50% 30%, rgba(246, 240, 229, 0.86), rgba(246, 240, 229, 0.22) 44%, rgba(246, 240, 229, 0) 70%);
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  justify-items: center;
  width: min(720px, 100%);
  padding-top: 34px;
}

.hero-kicker,
.section-kicker {
  margin: 0;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
h2 {
  margin: 18px 0;
  font-family: var(--font-display);
  font-size: clamp(42px, 6vw, 72px);
  font-weight: 600;
  line-height: 1.06;
}

.hero-subtitle {
  width: min(520px, 100%);
  margin: 0 0 26px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.65;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--green-dark);
  border-radius: 999px;
  padding: 0 24px;
  font-size: 14px;
  font-weight: 900;
  transition: transform 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.sound-toggle {
  position: absolute;
  right: clamp(18px, 3vw, 38px);
  bottom: clamp(18px, 3vw, 34px);
  z-index: 3;
  display: inline-grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid rgba(246, 240, 229, 0.72);
  border-radius: 999px;
  padding: 0;
  color: var(--white);
  background: rgba(9, 32, 22, 0.58);
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.sound-toggle svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.sound-toggle .icon-sound-on {
  display: none;
}

.sound-toggle .icon-sound-off {
  display: block;
}

.sound-toggle[aria-pressed="true"] {
  color: var(--white);
  background: var(--green);
}

.sound-toggle[aria-pressed="true"] .icon-sound-on {
  display: block;
}

.sound-toggle[aria-pressed="true"] .icon-sound-off {
  display: none;
}

.button.outline {
  color: var(--green-dark);
  background: transparent;
}

.button.full {
  width: 100%;
}

.training-process,
.about-section,
.environment-section,
.coaching-section,
.contact-section {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 92px 0;
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1fr);
  gap: 54px;
  align-items: end;
  margin-bottom: 34px;
}

.section-intro h2,
.section-intro p:last-child,
.environment-copy h2,
.environment-copy p,
.about-copy {
  margin: 0;
}

.section-intro p:last-child,
.about-copy p,
.environment-copy p,
.coach-text p,
.proof-quote span,
.contact-card dd,
.method-band p {
  color: rgba(9, 32, 22, 0.72);
  font-weight: 600;
  line-height: 1.85;
}

.process-videos {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.process-videos article {
  display: grid;
  gap: 12px;
}

.process-videos video {
  aspect-ratio: 9 / 16;
  height: auto;
  object-fit: cover;
  background: transparent;
  border-radius: 0;
}

.process-videos span {
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.method-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}

.method-band div {
  min-height: 240px;
  padding: 28px;
  background: var(--lime);
}

.method-band span {
  display: block;
  margin-bottom: 58px;
  color: var(--green);
  font-weight: 900;
}

.method-band h3,
.coach-text h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 600;
  line-height: 1.22;
}

.about-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.56fr);
  gap: 54px;
  align-items: center;
}

.about-text {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1fr);
  gap: 54px;
  align-items: start;
}

.about-copy {
  display: grid;
  gap: 22px;
}

.about-copy .button {
  width: max-content;
  margin-top: 8px;
}

.about-side-video video {
  aspect-ratio: 9 / 16;
  height: auto;
  object-fit: cover;
  background: transparent;
}

.about-film {
  position: relative;
  height: clamp(420px, 58vw, 680px);
  overflow: hidden;
}

.about-film::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(9, 32, 22, 0.78), rgba(9, 32, 22, 0.08));
}

.about-film div {
  position: absolute;
  left: max(24px, calc((100vw - 1200px) / 2));
  bottom: 42px;
  z-index: 1;
  width: min(520px, calc(100% - 48px));
  color: var(--white);
}

.about-film .section-kicker {
  color: var(--cream);
}

.environment-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.52fr) minmax(0, 1fr);
  gap: 48px;
  align-items: stretch;
}

.environment-video {
  display: grid;
  place-items: center;
  background: var(--cream);
  overflow: hidden;
}

.environment-video video {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 16;
  height: clamp(340px, 42vw, 560px);
  object-fit: cover;
  background: transparent;
}

.coaching-section {
  display: grid;
  gap: 34px;
}

.instructor-clips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  justify-content: center;
}

.instructor-clips video {
  height: clamp(280px, 31vw, 390px);
}

.booking-strip {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 46px;
  align-items: center;
  padding: 68px max(24px, calc((100vw - 1200px) / 2));
  color: var(--white);
  background: var(--green-dark);
}

.booking-strip h2 {
  margin: 0;
}

.booking-strip ol {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(255, 255, 255, 0.24);
}

.booking-strip li {
  padding: 22px;
  background: var(--green-dark);
  font-weight: 800;
}

.booking-strip span {
  display: block;
  margin-bottom: 16px;
  color: var(--cream);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 42px;
}

.contact-card {
  background: var(--cream);
  border: 1px solid var(--line);
  padding: 34px;
}

.contact-card dl {
  margin: 28px 0 0;
  border-top: 1px solid var(--line);
}

.contact-card dl > div {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.contact-card dt {
  color: var(--green);
  font-weight: 900;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.map-embed {
  margin-top: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.map-embed iframe {
  width: 100%;
  height: 340px;
  border: 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  padding: 24px 28px;
  color: var(--white);
  background: var(--green-dark);
  font-size: 13px;
  font-weight: 800;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 1040px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    gap: 14px;
    font-size: 13px;
  }

  .section-intro,
  .about-section,
  .about-text,
  .environment-section,
  .booking-strip,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .method-band {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-videos video,
  .about-side-video video,
  .instructor-clips video {
    height: auto;
  }
}

@media (max-width: 760px) {
  .site-header {
    min-height: 64px;
    padding: 0 18px;
  }

  .brand small {
    display: none;
  }

  .brand-logo {
    width: 40px;
    height: 40px;
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 64px 0 auto;
    display: grid;
    gap: 0;
    padding: 14px 22px 22px;
    background: rgba(246, 240, 229, 0.97);
    box-shadow: 0 18px 40px rgba(9, 32, 22, 0.14);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .site-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-cta {
    margin-top: 12px;
  }

  .hero {
    min-height: 680px;
    padding: 92px 18px 56px;
  }

  .hero-content {
    padding-top: 44px;
  }

  .hero h1,
  h2 {
    font-size: clamp(36px, 11vw, 54px);
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .sound-toggle {
    right: 18px;
    bottom: 18px;
    width: 44px;
    height: 44px;
  }

  .training-process,
  .about-section,
  .environment-section,
  .coaching-section,
  .contact-section {
    width: calc(100% - 36px);
    padding: 68px 0;
  }

  .about-text {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .method-band {
    grid-template-columns: 1fr;
  }

  .method-band div {
    min-height: 190px;
  }

  .method-band span {
    margin-bottom: 34px;
  }

  .process-videos,
  .instructor-clips {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(250px, 78vw);
    grid-template-columns: none;
    overflow-x: auto;
    padding-bottom: 12px;
    scroll-snap-type: x mandatory;
  }

  .process-videos article,
  .instructor-clips video {
    scroll-snap-align: start;
  }

  .process-videos video,
  .about-side-video video,
  .instructor-clips video {
    height: auto;
  }

  .about-film {
    height: 430px;
  }

  .environment-video video {
    height: auto;
    object-fit: cover;
  }

  .booking-strip {
    grid-template-columns: 1fr;
    padding: 58px 18px;
  }

  .booking-strip ol {
    grid-template-columns: 1fr;
  }

  .contact-card {
    padding: 24px;
  }

  .contact-card dl > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .contact-actions .button {
    width: 100%;
  }

  .site-footer {
    display: grid;
    gap: 12px;
    padding: 24px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}