/* TURNER Flying Blade — brand experience */
@font-face {
  font-family: "Syne";
  font-style: normal;
  font-weight: 400 800;
  font-display: optional;
  src: url("../fonts/syne-latin-68b623f0e4.woff2") format("woff2");
}

:root {
  --bg: #050505;
  --bg-elevated: #0c0c0c;
  --bg-soft: #111111;
  --fg: #f4f4f2;
  --fg-muted: #9a9a94;
  --fg-dim: #5c5c56;
  --accent: #e8d84a;
  --metal: #c8c8c4;
  --line: rgba(255, 255, 255, 0.08);
  --font-display: "Syne", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Syne", sans-serif;
  --nav-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --space: clamp(1.25rem, 4vw, 3.5rem);
  --max: 72rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.65;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: #111;
  border-radius: 0.25rem;
}

.skip-link:focus {
  top: 1rem;
}

/* Nav */
.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space);
  background: linear-gradient(180deg, rgba(5, 5, 5, 0.72), rgba(5, 5, 5, 0));
  backdrop-filter: blur(0);
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease);
}

.site-nav.is-solid {
  background: rgba(5, 5, 5, 0.78);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.site-nav__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.22em;
}

.site-nav__links {
  display: flex;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.site-nav__links a {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  transition: color 0.25s ease;
}

.site-nav__links a:hover,
.site-nav__links a:focus-visible {
  color: var(--fg);
}

/* Type */
.eyebrow {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
}

h2 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 1.4rem + 2.8vw, 4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.lede {
  margin: 0;
  max-width: 28rem;
  color: var(--fg-muted);
  font-weight: 300;
  font-size: clamp(1rem, 0.95rem + 0.35vw, 1.2rem);
  line-height: 1.75;
}

.section {
  position: relative;
  padding: clamp(5rem, 12vh, 9rem) 0;
}

.section__inner {
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
}

/* Reveal */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: end start;
  isolation: isolate;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero__video {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  transition: transform 1.2s var(--ease);
}

.hero.is-scrolled .hero__video {
  transform: scale(1.12);
}

.hero__veil {
  z-index: 2;
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 5, 5, 0.35) 0%, rgba(5, 5, 5, 0.15) 35%, rgba(5, 5, 5, 0.82) 100%),
    radial-gradient(ellipse 80% 60% at 50% 20%, transparent 0%, rgba(5, 5, 5, 0.45) 100%);
  transition: opacity 0.8s ease;
}

.hero.is-scrolled .hero__veil {
  opacity: 1;
  background:
    linear-gradient(180deg, rgba(5, 5, 5, 0.5) 0%, rgba(5, 5, 5, 0.35) 40%, rgba(5, 5, 5, 0.92) 100%);
}

.hero__content {
  padding: 0 var(--space) clamp(5.5rem, 14vh, 8rem);
  max-width: 48rem;
}

.brand-title {
  margin: 0 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.brand-title__zh {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.2rem, 2rem + 6vw, 7.5rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
}

.brand-title__en {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.1rem, 0.9rem + 1.2vw, 1.85rem);
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--metal);
}

.hero__support {
  margin: 0;
  color: var(--fg-muted);
  font-weight: 300;
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.1rem);
  letter-spacing: 0.08em;
}

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 1.75rem;
  transform: translateX(-50%);
  width: 1px;
  height: 3rem;
  background: linear-gradient(180deg, var(--accent), transparent);
  opacity: 0.7;
}

.hero__scroll span {
  position: absolute;
  inset: 0 auto auto 50%;
  width: 5px;
  height: 5px;
  margin-left: -2px;
  border-radius: 50%;
  background: var(--accent);
  animation: drip 1.8s var(--ease) infinite;
}

@keyframes drip {
  0% { top: 0; opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* Philosophy */
.section--philosophy {
  min-height: 70svh;
  display: grid;
  place-items: center;
  padding-inline: var(--space);
  background:
    radial-gradient(ellipse 70% 50% at 50% 40%, rgba(232, 216, 74, 0.05), transparent 70%),
    var(--bg);
}

.philosophy {
  margin: 0;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 1.2rem + 3vw, 3.75rem);
  line-height: 1.25;
  letter-spacing: 0.06em;
}

/* Form */
.section--form {
  background:
    linear-gradient(180deg, #050505 0%, #0a0a0a 40%, #121214 100%);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  margin-bottom: clamp(3rem, 8vw, 6rem);
}

.form-stage {
  position: relative;
  min-height: clamp(22rem, 50vw, 34rem);
  display: grid;
  place-items: center;
}

.form-stage__primary,
.form-stage__secondary {
  position: absolute;
  width: min(78%, 26rem);
  filter: drop-shadow(0 30px 50px rgba(0, 0, 0, 0.55));
  transition: transform 0.8s var(--ease);
}

.form-stage__primary {
  left: -4%;
  transform: rotate(82deg) translateY(0.5rem);
}

.form-stage__secondary {
  right: -6%;
  width: min(70%, 22rem);
  transform: rotate(98deg) translateY(-0.75rem);
}

.form-stage.is-visible .form-stage__primary {
  transform: rotate(84deg) translateY(0);
}

.form-stage.is-visible .form-stage__secondary {
  transform: rotate(96deg) translateY(0);
}

.form-photo {
  margin: 0;
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
  overflow: hidden;
  border-radius: 0.15rem;
}

.form-photo img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

/* Vibe */
.section--vibe {
  padding: 0;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 32%);
  align-content: center;
  background: #090909;
  overflow: hidden;
}

.vibe-media {
  position: absolute;
  inset: 0 32% 0 0;
  z-index: 0;
}

.vibe-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 75%, #090909 100%);
  pointer-events: none;
}

.vibe-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left center;
  filter: brightness(0.55) saturate(0.9);
}

.vibe-media__pulse {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 60% 45%, rgba(232, 216, 74, 0.12), transparent 45%);
  animation: pulse 2.4s ease-in-out infinite;
  pointer-events: none;
  mix-blend-mode: screen;
}

@keyframes pulse {
  0%, 100% { opacity: 0.35; transform: scale(1); }
  50% { opacity: 0.85; transform: scale(1.04); }
}

.vibe-copy {
  position: relative;
  z-index: 1;
  grid-column: 2;
  width: auto;
  margin: 0;
  padding: clamp(6rem, 12vh, 9rem) clamp(1.5rem, 3vw, 3rem) 2.5rem;
}

.vibe-copy h2 {
  font-size: clamp(1.6rem, 2.25vw, 2.75rem);
  line-height: 1.3;
  letter-spacing: 0;
}

.vibe-copy .lede {
  color: rgba(244, 244, 242, 0.78);
  font-size: 1rem;
}

.vibe-copy .spec {
  margin-top: 2rem;
  flex-wrap: wrap;
  gap: 0.5rem 0.85rem;
}

.vibe-copy .spec__num {
  font-family: var(--font-body);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.8rem, 4vw, 4.5rem);
}

.spec {
  margin: 2.5rem 0 0;
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  opacity: 1;
  transform: none;
  transition: opacity 1s var(--ease) 0.35s, transform 1s var(--ease) 0.35s;
}

.spec.is-lit {
  opacity: 1;
  transform: none;
}

.spec__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 1.5rem + 4vw, 5.5rem);
  letter-spacing: -0.03em;
  color: var(--accent);
  line-height: 1;
}

.spec__unit {
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
}

.vibe-clip {
  position: relative;
  z-index: 1;
  grid-column: 2;
  width: auto;
  margin: 0 clamp(1.5rem, 3vw, 3rem) clamp(3rem, 8vh, 5rem);
  border-radius: 0.15rem;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.vibe-clip video {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* Teeth */
.section--teeth {
  background:
    linear-gradient(180deg, #0e0e10 0%, #080808 100%);
}

.teeth-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  margin-bottom: clamp(3rem, 7vw, 5rem);
}

.teeth-visual {
  display: grid;
  place-items: center;
  min-height: 26rem;
  padding: 1.5rem;
  background:
    radial-gradient(circle at 50% 55%, rgba(255, 255, 255, 0.06), transparent 55%);
}

.teeth-visual img {
  width: min(92%, 28rem);
  filter: drop-shadow(0 28px 40px rgba(0, 0, 0, 0.5));
}

.teeth-scene {
  margin: 0;
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
  overflow: hidden;
}

.teeth-scene img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  filter: saturate(0.8);
}

/* Colors */
.section--colors {
  padding-top: clamp(4rem, 10vh, 7rem);
  padding-bottom: clamp(3rem, 6vh, 4rem);
  background: #f2f1ec;
  color: #111;
}

.section--colors .eyebrow {
  color: #8a7a18;
}

.section--colors h2 {
  color: #111;
}

.colors-head {
  width: min(100% - 2 * var(--space), var(--max));
  margin: 0 auto 2rem;
}

.colors-track {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--space);
  padding-inline: var(--space);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.colors-track::-webkit-scrollbar {
  display: none;
}

.color-panel {
  position: relative;
  flex: 0 0 min(88vw, 42rem);
  scroll-snap-align: center;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: 0.2rem;
  isolation: isolate;
}

.color-panel__bg {
  position: absolute;
  inset: 0;
}

.color-panel__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--ease);
}

.color-panel:hover .color-panel__bg img,
.color-panel.is-active .color-panel__bg img {
  transform: scale(1.04);
}

.color-panel__label {
  position: absolute;
  left: clamp(1.25rem, 3vw, 2rem);
  bottom: clamp(1.25rem, 3vw, 2rem);
  z-index: 1;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.color-panel--gray .color-panel__label {
  color: #111;
  text-shadow: 0 1px 12px rgba(255, 255, 255, 0.4);
}

.color-panel--black .color-panel__label,
.color-panel--gold .color-panel__label {
  color: #fff;
}

.color-panel__en {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 1.1rem + 2vw, 3rem);
  line-height: 1;
  letter-spacing: -0.02em;
}

.color-panel__zh {
  margin: 0.45rem 0 0;
  font-size: 1rem;
  letter-spacing: 0.28em;
  opacity: 0.85;
}

.colors-dots {
  display: flex;
  justify-content: center;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.colors-dots button {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: rgba(17, 17, 17, 0.25);
  transition: transform 0.25s ease, background 0.25s ease;
}

.colors-dots button.is-active {
  background: #111;
  transform: scale(1.25);
}

/* EDC */
.section--edc {
  background: var(--bg);
}

.edc-spread {
  width: min(100% - 2 * var(--space), var(--max));
  margin: 0 auto clamp(2.5rem, 6vw, 4rem);
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: clamp(1rem, 2.5vw, 1.75rem);
}

.edc-spread figure {
  margin: 0;
  overflow: hidden;
}

.edc-spread img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.edc-spread__main {
  min-height: clamp(22rem, 55vw, 36rem);
}

.edc-spread__side {
  display: grid;
  grid-template-rows: 1fr auto;
  gap: clamp(1rem, 2.5vw, 1.75rem);
}

.edc-spread__side figure {
  min-height: 14rem;
}

.edc-copy {
  padding: 0.5rem 0.25rem 0;
}

.edc-hand {
  margin: 0;
  width: min(100% - 2 * var(--space), var(--max));
  margin-inline: auto;
  overflow: hidden;
}

.edc-hand img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  filter: contrast(1.05) saturate(0.85);
}

/* Close */
.section--close {
  padding-top: clamp(4rem, 10vh, 7rem);
  padding-bottom: 0;
  background:
    radial-gradient(ellipse 60% 40% at 50% 30%, rgba(232, 216, 74, 0.06), transparent 65%),
    #000;
}

.close-stage {
  width: min(100% - 2 * var(--space), 52rem);
  margin: 0 auto;
  text-align: center;
}

.close-stage__art {
  width: 100%;
  margin: 0 auto 2.5rem;
  border-radius: 0.15rem;
}

.close-lockup__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 1.5rem + 3vw, 4rem);
  letter-spacing: -0.02em;
}

.close-lockup__en {
  margin: 0.6rem 0 1.75rem;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.42em;
  font-size: 0.85rem;
  color: var(--metal);
}

.close-lockup__line {
  margin: 0;
  color: var(--fg-muted);
  letter-spacing: 0.16em;
  font-weight: 300;
}

.site-footer {
  margin-top: clamp(4rem, 10vh, 7rem);
  padding: 1.5rem var(--space);
  border-top: 1px solid var(--line);
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--fg-dim);
}

/* Responsive */
@media (max-width: 860px) {
  .section--vibe {
    grid-template-columns: 1fr;
  }

  .vibe-media {
    position: relative;
    inset: auto;
    aspect-ratio: 1;
  }

  .vibe-media::after {
    background: linear-gradient(180deg, transparent 75%, #090909 100%);
  }

  .vibe-copy {
    grid-column: 1;
    padding: 2rem var(--space);
  }

  .vibe-copy h2 {
    font-size: clamp(2rem, 5vw, 2.75rem);
  }

  .form-grid,
  .teeth-grid,
  .edc-spread {
    grid-template-columns: 1fr;
  }

  .form-stage {
    min-height: 20rem;
    order: -1;
  }

  .teeth-visual {
    min-height: 16rem;
  }

  .edc-spread__main {
    min-height: 18rem;
  }

  .vibe-clip {
    grid-column: 1;
    margin-left: var(--space);
    margin-right: var(--space);
    width: auto;
  }

  .teeth-scene img,
  .edc-hand img {
    aspect-ratio: 16 / 10;
  }
}

@media (max-width: 560px) {
  .site-nav__links a {
    letter-spacing: 0.06em;
  }

  .brand-title__en {
    letter-spacing: 0.18em;
  }

  .form-stage {
    min-height: 18rem;
  }

  .form-stage__primary {
    left: -18%;
    width: min(95%, 22rem);
  }

  .form-stage__secondary {
    right: -20%;
    width: min(88%, 19rem);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

  .hero__video,
  .hero.is-scrolled .hero__video,
  .color-panel__bg img {
    transform: none !important;
    transition: none !important;
  }

  .form-stage__primary {
    transform: rotate(84deg) !important;
    transition: none !important;
  }

  .form-stage__secondary {
    transform: rotate(96deg) !important;
    transition: none !important;
  }

  .hero__scroll span,
  .vibe-media__pulse {
    animation: none;
  }

  .spec {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Existing website registration retained for publication. */
.site-footer__icp { display: inline-block; margin-top: .65rem; color: var(--fg-muted); font-size: .75rem; letter-spacing: .03em; }
.site-footer__icp:hover { text-decoration: underline; }

.hero__poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero.is-playing .hero__video { opacity: 1; }
.video-toggle { position: absolute; z-index: 3; right: var(--space); bottom: 1.75rem; padding: .55rem .8rem; border: 1px solid #ffffff55; border-radius: 2rem; background: #05050566; color: #f4f4f2; font-size: .7rem; letter-spacing: .1em; }
.video-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.reveal.is-pending:not(.is-visible) { opacity: 0; transform: translateY(2.25rem); }
.spec.is-pending:not(.is-lit) { opacity: 0; transform: translateY(1rem); }