/* ZINCH — 浅色产品官网（迈从式白底气质，独立视觉） */
:root {
  --bg: #ffffff;
  --bg-soft: #f4f5f7;
  --bg-muted: #eceef2;
  --surface: #ffffff;
  --border: rgba(17, 17, 17, 0.08);
  --border-strong: rgba(17, 17, 17, 0.14);
  --text: #111111;
  --text-secondary: #3d3d3d;
  --text-muted: #6b6f76;
  --text-dim: #9a9ea6;
  --accent: #0d7377;
  --accent-soft: rgba(13, 115, 119, 0.1);
  --warm: #8a6d4b;
  --danger: #b54a4a;
  --shadow: 0 20px 50px rgba(17, 17, 17, 0.08);
  --font-display: "Outfit", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-body: "Outfit", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --warn-h: 42px;
  --nav-h: 68px;
  --header-offset: calc(var(--warn-h) + var(--nav-h));
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: #c5c8ce #f4f5f7;
  font-size: 18px; /* 整体约大两号（原约 16px） */
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.is-locked {
  overflow: hidden;
}

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

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

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

ul {
  list-style: none;
}

.container {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.container-wide {
  width: min(1360px, calc(100% - 32px));
  margin-inline: auto;
}

/* ========== Nicotine warning bar ========== */
.nicotine-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  height: var(--warn-h);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 16px;
  background: #111;
  color: #f0f0f0;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-align: center;
  line-height: 1.35;
}

.nicotine-bar strong {
  color: #ffb4b4;
  font-weight: 700;
}

/* ========== 全幅轮播 Banner ========== */
.banner {
  padding-top: var(--header-offset);
  background: #0c0d10;
  box-sizing: border-box;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.banner__viewport {
  position: relative;
  width: 100%;
  flex: 1 1 auto;
  overflow: hidden;
  height: calc(100vh - var(--header-offset));
  height: calc(100dvh - var(--header-offset));
  min-height: calc(100vh - var(--header-offset));
  min-height: calc(100dvh - var(--header-offset));
}

.banner__track {
  position: relative;
  width: 100%;
  height: 100%;
}

.banner__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
  pointer-events: none;
}

.banner__slide.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 1;
}

.banner__img,
.banner__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.banner__video {
  background: #0c0d10;
}

.banner__mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(8, 9, 11, 0.78) 0%,
    rgba(8, 9, 11, 0.45) 42%,
    rgba(8, 9, 11, 0.12) 70%,
    transparent 100%
  );
  z-index: 1;
  pointer-events: none;
}

.banner__mask--video {
  background: linear-gradient(
    90deg,
    rgba(8, 9, 11, 0.72) 0%,
    rgba(8, 9, 11, 0.38) 40%,
    rgba(8, 9, 11, 0.1) 68%,
    transparent 100%
  );
}

.banner__sound {
  position: absolute;
  right: 20px;
  bottom: 56px;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  backdrop-filter: blur(6px);
  transition: opacity 0.25s, background 0.25s;
}

.banner__sound:hover {
  background: rgba(0, 0, 0, 0.72);
}

.banner__sound.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.banner__sound-icon {
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-radius: 2px;
  position: relative;
  flex-shrink: 0;
}

.banner__sound-icon::after {
  content: "";
  position: absolute;
  inset: -4px -2px;
  border-right: 2px solid currentColor;
  border-radius: 0 50% 50% 0;
  opacity: 0.85;
}

.banner__sound.is-muted .banner__sound-icon::before {
  content: "";
  position: absolute;
  left: -2px;
  top: 50%;
  width: 18px;
  height: 2px;
  background: currentColor;
  transform: translateY(-50%) rotate(-35deg);
  z-index: 1;
}

.banner__content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
  max-width: 520px;
  margin-left: max(24px, calc((100% - 1180px) / 2));
  padding: 0 24px 0 0;
  background: none;
  border: none;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.35);
}

.banner__tag {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: #9fe0dc;
  font-weight: 600;
  margin-bottom: 12px;
}

.banner__content h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.5vw, 4.4rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
  line-height: 1;
  color: #fff;
}

.banner__desc {
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 28px;
  max-width: 34ch;
}

.banner__actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.banner .btn--primary {
  background: var(--accent);
  color: #fff;
  border: none;
}

.banner .btn--primary:hover {
  background: #0a5f62;
}

.banner__price {
  font-size: 1.35rem;
  font-weight: 600;
  color: #fff;
}

.banner__price em {
  font-style: normal;
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.65);
}

.banner__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  display: grid;
  place-items: center;
  backdrop-filter: blur(6px);
  transition: background 0.25s, transform 0.25s, border-color 0.25s;
}

.banner__arrow:hover {
  background: rgba(0, 0, 0, 0.62);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-50%) scale(1.05);
}

.banner__arrow--prev {
  left: 16px;
}

.banner__arrow--next {
  right: 16px;
}

.banner__dots {
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 8px;
}

.banner__dots button {
  width: 28px;
  height: 3px;
  background: rgba(255, 255, 255, 0.35);
  transition: width 0.3s, background 0.3s;
}

.banner__dots button.is-active {
  width: 40px;
  background: #fff;
}

/* ========== 产品系列自动轮播（横向方图） ========== */
.series-bar {
  padding-top: 48px;
  padding-bottom: 40px;
  overflow: hidden;
  background: #fff;
}

.series-bar__head {
  margin-bottom: 28px;
}

.series-nav {
  display: flex;
  gap: 8px;
}

.series-nav button {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 1.25rem;
  line-height: 1;
  display: grid;
  place-items: center;
  transition: background 0.2s, color 0.2s;
}

.series-nav button:hover {
  background: #111;
  color: #fff;
  border-color: #111;
}

.series-carousel {
  width: 100%;
  overflow: hidden;
  padding: 0 max(24px, calc((100% - 1180px) / 2));
}

.series-track {
  display: flex;
  gap: 16px;
  width: max-content;
  will-change: transform;
}

.series-item {
  flex: 0 0 clamp(150px, 17vw, 190px);
  text-align: center;
  transition: transform 0.3s var(--ease);
}

.series-item:hover {
  transform: translateY(-4px);
}

.series-item__thumb {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-soft);
  margin-bottom: 12px;
}

.series-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.45s var(--ease);
}

.series-item:hover .series-item__thumb img {
  transform: scale(1.05);
}

.series-item > span:last-child {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.series-grid {
  display: none;
}

/* ========== 商城商品卡（统一正方形图） ========== */
.mall-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.mall-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  padding: 16px 16px 20px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}

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

.mall-card__badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 1;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: #111;
  padding: 4px 8px;
}

.mall-card__img {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: var(--bg-soft);
  overflow: hidden;
  margin-bottom: 14px;
}

.mall-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.45s var(--ease);
}

.mall-card:hover .mall-card__img img {
  transform: scale(1.04);
}

.mall-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 650;
  margin-bottom: 4px;
}

.mall-card > p {
  font-size: 0.95rem;
  color: var(--text-dim);
  margin-bottom: 14px;
  flex: 1;
}

.mall-card__foot {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.mall-card__foot strong {
  font-size: 1.1rem;
}

.mall-card__buy {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 8px 16px;
  background: #111;
  color: #fff;
  transition: background 0.25s;
}

.mall-card:hover .mall-card__buy {
  background: var(--accent);
}

.feature-block__media img {
  width: 100%;
  height: 100%;
  max-height: 420px;
  object-fit: cover;
  object-position: center;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ========== 权益 ========== */
.benefits {
  padding: 28px 0;
  border-block: 1px solid var(--border);
  background: #fff;
}

.benefits__row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  text-align: center;
}

.benefits__item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.benefits__item span {
  font-size: 0.8rem;
  color: var(--text-dim);
}

@media (max-width: 1024px) {
  .series-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .benefits__row {
    grid-template-columns: repeat(3, 1fr);
  }

  .banner__content {
    margin-left: 16px;
    margin-right: 16px;
    max-width: calc(100% - 32px);
    padding: 0;
  }
}

@media (max-width: 768px) {
  .series-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .banner__arrow {
    width: 36px;
    height: 36px;
    font-size: 1.3rem;
  }
}

/* ========== 开屏描边画字（迈从式） ========== */
.splash {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  transition: opacity 0.55s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.55s;
}

.splash.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.splash__stage {
  width: min(420px, 82vw);
  height: auto;
  display: grid;
  place-items: center;
}

.splash__draw {
  width: 100%;
  height: auto;
  overflow: visible;
}

.splash__stroke {
  fill: none;
  stroke: #111;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: splashDraw 1.05s cubic-bezier(0.45, 0, 0.2, 1) forwards;
}

.splash__stroke:nth-child(1) { animation-delay: 0.04s; }
.splash__stroke:nth-child(2) { animation-delay: 0.2s; }
.splash__stroke:nth-child(3) { animation-delay: 0.34s; }
.splash__stroke:nth-child(4) { animation-delay: 0.5s; }
.splash__stroke:nth-child(5) { animation-delay: 0.68s; }

@keyframes splashDraw {
  to {
    stroke-dashoffset: 0;
  }
}

/* ========== Age Gate ========== */
.age-gate {
  position: fixed;
  inset: 0;
  z-index: 9990;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  transition: opacity 0.45s var(--ease), visibility 0.45s;
}

.age-gate.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.age-gate__panel {
  text-align: center;
  padding: 48px 40px;
  max-width: 420px;
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow);
}

.age-gate__brand {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.35rem;
  letter-spacing: 0.42em;
  margin-bottom: 28px;
  margin-right: -0.42em;
}

.age-gate__title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 600;
  margin-bottom: 12px;
}

.age-gate__desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 32px;
}

.age-gate__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.age-gate__note {
  margin-top: 24px;
  font-size: 0.72rem;
  color: var(--text-dim);
  line-height: 1.55;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 50px;
  padding: 0 28px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: background 0.3s var(--ease), color 0.3s, border-color 0.3s, transform 0.3s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--text);
  color: #fff;
}

.btn--primary:hover {
  background: var(--accent);
}

.btn--ghost {
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
}

.btn--ghost:hover {
  border-color: var(--text);
}

.btn--ghost-light {
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: transparent;
  color: #fff;
}

.btn--ghost-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.btn--outline-light {
  border: 1px solid var(--border-strong);
  color: var(--text);
}

.btn--outline-light:hover {
  background: var(--text);
  color: #fff;
}

.btn--sm {
  height: 38px;
  padding: 0 18px;
  font-size: 0.8rem;
}

/* ========== Nav ========== */
.site-header {
  position: fixed;
  top: var(--warn-h);
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.03);
  transition: box-shadow 0.3s;
}

.site-header.scrolled {
  background: #ffffff;
  backdrop-filter: none;
  border-bottom-color: var(--border);
  box-shadow: 0 4px 18px rgba(17, 17, 17, 0.06);
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.35rem;
  letter-spacing: 0.38em;
  margin-right: -0.38em;
  z-index: 2;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav__links a {
  padding: 8px 14px;
  font-size: 1rem;
  color: var(--text-muted);
  transition: color 0.25s;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--text);
}

.nav__dropdown {
  position: relative;
}

.nav__dropdown > a {
  display: inline-flex;
}

.nav__mega {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 180px;
  padding: 10px 0;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  z-index: 20;
}

.nav__dropdown:hover .nav__mega {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__mega a {
  display: block;
  padding: 10px 18px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.nav__mega a:hover {
  color: var(--text);
  background: var(--bg-soft);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav__lang {
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  z-index: 2;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.3s, opacity 0.3s;
}

.nav__toggle.open span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

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

.nav__toggle.open span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: stretch;
  padding-top: var(--nav-h);
  overflow: hidden;
  background:
    radial-gradient(ellipse 55% 45% at 78% 42%, rgba(13, 115, 119, 0.07), transparent 60%),
    linear-gradient(180deg, #fafbfc 0%, #ffffff 45%, #f3f5f8 100%);
}

.hero__mist {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 35% 28% at 65% 55%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(ellipse 20% 18% at 40% 40%, rgba(13, 115, 119, 0.05), transparent);
  animation: mistDrift 16s ease-in-out infinite alternate;
}

@keyframes mistDrift {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(2%, 1%) scale(1.05);
  }
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.35;
}

.hero__slides {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 0 0 72px;
  display: flex;
  align-items: center;
}

.hero__slide {
  display: none;
  width: 100%;
  min-height: calc(100vh - var(--nav-h) - 72px);
  min-height: calc(100dvh - var(--nav-h) - 72px);
  align-items: center;
}

.hero__slide.active {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 32px;
  animation: heroIn 0.85s var(--ease);
}

@keyframes heroIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__copy {
  max-width: 520px;
  padding: 24px 0;
}

.hero__brand {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7.5vw, 5.8rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
  color: var(--text);
}

.hero__brand span {
  display: block;
  font-size: 0.22em;
  font-weight: 600;
  letter-spacing: 0.32em;
  color: var(--accent);
  margin-bottom: 14px;
}

.hero__headline {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.hero__sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 38ch;
  margin-bottom: 32px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}

.device {
  position: relative;
  width: min(260px, 52vw);
  aspect-ratio: 1 / 2.35;
  border-radius: 36px;
  background: linear-gradient(155deg, #2a3038 0%, #12151a 42%, #1c222a 100%);
  box-shadow:
    var(--shadow),
    0 8px 24px rgba(17, 17, 17, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
  animation: deviceFloat 6.5s ease-in-out infinite;
}

@keyframes deviceFloat {
  0%,
  100% {
    transform: translateY(0) rotate(-1.5deg);
  }
  50% {
    transform: translateY(-12px) rotate(1deg);
  }
}

.device::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 28%);
  pointer-events: none;
}

.device__screen {
  position: absolute;
  top: 18%;
  left: 50%;
  transform: translateX(-50%);
  width: 42%;
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, rgba(126, 210, 205, 0.95), transparent 55%),
    radial-gradient(circle at 60% 70%, rgba(196, 165, 116, 0.35), transparent 50%),
    #0a0c10;
  box-shadow: 0 0 36px rgba(13, 115, 119, 0.35);
}

.device__body-line {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 28%;
  height: 2px;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 2px;
}

.device__body-line--1 {
  top: 42%;
}

.device__body-line--2 {
  top: 48%;
}

.device__tip {
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 36%;
  height: 14px;
  border-radius: 8px 8px 4px 4px;
  background: linear-gradient(180deg, #3a424e, #1a1f26);
}

.device--pro {
  border-radius: 20px;
  aspect-ratio: 1 / 1.85;
  background: linear-gradient(160deg, #3a424c, #16191e 50%, #252b34);
}

.device--pro .device__screen {
  top: 12%;
  width: 55%;
  aspect-ratio: 16 / 10;
  border-radius: 8px;
}

.device--air {
  width: min(190px, 40vw);
  aspect-ratio: 1 / 3.2;
  border-radius: 40px;
  background: linear-gradient(180deg, #f2f4f6 0%, #c8ced6 45%, #9aa3ae 100%);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.device--air .device__screen {
  background:
    radial-gradient(circle at 40% 35%, rgba(13, 115, 119, 0.55), transparent 60%),
    #e8ecf0;
  box-shadow: 0 0 24px rgba(13, 115, 119, 0.2);
}

.device--air .device__body-line {
  background: rgba(0, 0, 0, 0.1);
}

.device--air .device__tip {
  background: linear-gradient(180deg, #dfe3e8, #aeb6c0);
}

.hero__specs {
  position: absolute;
  bottom: 6%;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.hero__specs span + span::before {
  content: "·";
  margin-right: 20px;
  color: var(--accent);
}

.hero__dots {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  gap: 8px;
}

.hero__dot {
  width: 28px;
  height: 3px;
  background: rgba(17, 17, 17, 0.15);
  transition: background 0.3s, width 0.3s;
}

.hero__dot.active {
  width: 40px;
  background: var(--text);
}

/* ========== Sections ========== */
.section {
  padding: 96px 0;
  position: relative;
}

.section--tight {
  padding: 56px 0 80px;
}

.section--soft {
  background: var(--bg-soft);
}

.section__label {
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
  font-weight: 600;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 12px;
}

.section__desc {
  color: var(--text-muted);
  max-width: 48ch;
  font-size: 1.12rem;
}

.section__head {
  margin-bottom: 40px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}

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

/* ========== Categories ========== */
.categories {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.category {
  position: relative;
  min-height: 240px;
  padding: 28px 24px;
  background: var(--bg-soft);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  transition: background 0.35s, transform 0.35s var(--ease);
}

.category:hover {
  background: var(--bg-muted);
  transform: translateY(-3px);
}

.category__glow {
  position: absolute;
  top: -15%;
  right: -8%;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-soft), transparent 70%);
  transition: transform 0.45s var(--ease);
}

.category:hover .category__glow {
  transform: scale(1.25);
}

.category__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 650;
  margin-bottom: 6px;
  position: relative;
}

.category__meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  position: relative;
}

.category__link {
  position: relative;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.category__link::after {
  content: "→";
  transition: transform 0.3s;
}

.category:hover .category__link::after {
  transform: translateX(4px);
}

/* ========== Feature blocks ========== */
.feature-block {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  min-height: 520px;
  background: var(--bg-soft);
  overflow: hidden;
}

.feature-block--reverse .feature-block__media {
  order: 2;
}

.feature-block__media {
  position: relative;
  background: var(--bg-soft);
  display: block;
  place-items: center;
  padding: 0;
  overflow: hidden;
  min-height: 420px;
}

.feature-block__media img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  object-position: center;
  display: block;
}

.feature-block__content {
  padding: clamp(36px, 5vw, 64px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #fff;
}

.feature-block__tag {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--warm);
  font-weight: 600;
  margin-bottom: 14px;
}

.feature-block__title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.12;
  margin-bottom: 14px;
}

.feature-block__text {
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 40ch;
}

.feature-block__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}

.feature-block__stats strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.feature-block__stats span {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

/* ========== Products ========== */
.product-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.product-tab {
  padding: 9px 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}

.product-tab.active,
.product-tab:hover {
  color: var(--text);
  border-color: var(--border);
  background: var(--bg-soft);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.product-card {
  display: flex;
  flex-direction: column;
  transition: transform 0.35s var(--ease);
}

.product-card:hover {
  transform: translateY(-4px);
}

.product-card__media {
  aspect-ratio: 1 / 1;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  display: block;
  margin-bottom: 14px;
  position: relative;
  overflow: hidden;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.45s var(--ease);
}

.product-card:hover .product-card__media img {
  transform: scale(1.04);
}

.product-card__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: #fff;
  border: 1px solid var(--border);
  padding: 4px 9px;
  font-weight: 600;
}

.product-card__name {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 650;
  margin-bottom: 4px;
}

.product-card__spec {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.product-card__price {
  font-size: 0.95rem;
  font-weight: 650;
}

.product-card__price span {
  font-weight: 400;
  color: var(--text-dim);
  font-size: 0.8rem;
  margin-left: 4px;
}

/* ========== Brand ========== */
.brand-banner {
  position: relative;
  min-height: 480px;
  display: grid;
  place-items: center;
  text-align: center;
  overflow: hidden;
  border-block: 1px solid var(--border);
}

.brand-banner__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 20%, rgba(13, 115, 119, 0.12), transparent 50%),
    linear-gradient(160deg, #f0f3f6, #ffffff 55%, #e8ecf1);
}

.brand-banner__content {
  position: relative;
  z-index: 1;
  padding: 64px 24px;
  max-width: 620px;
}

.brand-banner__title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
}

.brand-banner__text {
  color: var(--text-muted);
  margin-bottom: 28px;
  font-size: 1.02rem;
}

/* ========== Philosophy ========== */
.philosophy {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.philosophy__item {
  background: var(--bg-soft);
  padding: 36px 28px;
  transition: background 0.3s;
}

.philosophy__item:hover {
  background: var(--bg-muted);
}

.philosophy__num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 18px;
}

.philosophy__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 650;
  margin-bottom: 10px;
}

.philosophy__text {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========== FAQ ========== */
.faq {
  max-width: 720px;
}

.faq__item {
  border-bottom: 1px solid var(--border);
}

.faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  text-align: left;
  font-size: 1rem;
  font-weight: 550;
}

.faq__q svg {
  flex-shrink: 0;
  transition: transform 0.3s;
}

.faq__item.open .faq__q svg {
  transform: rotate(45deg);
}

.faq__a {
  display: none;
  padding: 0 0 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.faq__item.open .faq__a {
  display: block;
  animation: heroIn 0.35s var(--ease);
}

/* ========== Footer ========== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 28px;
  background: var(--bg-soft);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 36px;
  margin-bottom: 40px;
}

.footer__brand {
  font-family: var(--font-display);
  font-weight: 300;
  letter-spacing: 0.38em;
  margin-right: -0.38em;
  font-size: 1.15rem;
  margin-bottom: 14px;
}

.footer__tagline {
  color: var(--text-dim);
  font-size: 0.875rem;
  max-width: 28ch;
  line-height: 1.7;
}

.footer__col h4 {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.footer__col a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  transition: color 0.25s;
}

.footer__col a:hover {
  color: var(--accent);
}

.footer__contact {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.footer__contact h4 {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 10px;
  color: var(--text-dim);
}

.footer__contact p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.footer__warn {
  color: var(--danger);
  opacity: 0.9;
}

/* ========== Inner pages ========== */
.page-hero {
  padding: calc(var(--header-offset) + 56px) 0 40px;
  border-bottom: 1px solid var(--border);
  background: #fff;
}

.page-hero--mall {
  background: var(--bg-soft);
}

.page-hero__row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.page-hero p {
  color: var(--text-muted);
  max-width: 48ch;
}

.page-hero__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chip {
  height: 38px;
  padding: 0 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  background: #fff;
  border: 1px solid var(--border);
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.filter-chip:hover,
.filter-chip.is-active {
  color: #fff;
  background: #111;
  border-color: #111;
}

/* Brand page */
.brand-hero {
  position: relative;
  margin-top: var(--header-offset);
  height: clamp(380px, 52vw, 560px);
  overflow: hidden;
  background: var(--bg-soft);
}

.brand-hero__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-hero__mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.94) 0%,
    rgba(255, 255, 255, 0.82) 36%,
    rgba(255, 255, 255, 0.2) 70%,
    transparent 100%
  );
}

.brand-hero__copy {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 560px;
}

.brand-hero__copy h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.12;
  margin-bottom: 14px;
}

.brand-hero__copy > p:last-child {
  color: var(--text-muted);
  max-width: 36ch;
}

.brand-story {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.brand-story__text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 1.02rem;
}

.brand-story__text .btn {
  margin-top: 12px;
}

.brand-story__media {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--bg-soft);
}

.brand-story__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.craft-card {
  background: #fff;
  border: 1px solid var(--border);
  padding: 14px 14px 22px;
}

.craft-card__img {
  aspect-ratio: 16 / 11;
  overflow: hidden;
  background: var(--bg-soft);
  margin-bottom: 16px;
}

.craft-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.craft-card__num {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 8px;
}

.craft-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.craft-card > p:last-child {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.responsibility {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
  padding: 40px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
}

.responsibility .section__desc,
.responsibility > div > p {
  color: var(--text-muted);
  margin-bottom: 20px;
}

.responsibility__list {
  display: grid;
  gap: 12px;
}

.responsibility__list li {
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Support page */
.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.support-card {
  display: block;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid var(--border);
  transition: transform 0.3s var(--ease), box-shadow 0.3s, border-color 0.3s;
}

.support-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(13, 115, 119, 0.25);
}

.support-card__icon {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 18px;
}

.support-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.support-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 18px;
}

.support-card__link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.support-split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: center;
}

.policy-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.policy-item {
  padding: 22px 20px;
  background: #fff;
  border: 1px solid var(--border);
}

.policy-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.policy-item span {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.contact-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 36px 0;
}

.contact-band p {
  color: var(--text-muted);
  margin-top: 6px;
}

@media (max-width: 1024px) {
  .brand-story,
  .responsibility,
  .support-split {
    grid-template-columns: 1fr;
  }

  .craft-grid,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .policy-list {
    grid-template-columns: 1fr;
  }
}

/* ========== Product showcase carousel ========== */
.product-showcase {
  padding: 56px 0 64px;
  background: #0c0d10;
  color: #fff;
}

.product-showcase__head {
  text-align: center;
  margin-bottom: 28px;
}

.product-showcase .section__label {
  color: #9fe0dc;
}

.product-showcase .section__title {
  color: #fff;
}

.product-showcase__stage {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  padding: 0 56px;
}

.product-showcase__viewport {
  overflow: hidden;
  border-radius: 4px;
}

.product-showcase__track {
  position: relative;
  height: clamp(420px, 58vw, 560px);
}

.product-showcase__slide {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.55s var(--ease), visibility 0.55s;
  background: #14161b;
  color: #fff;
}

.product-showcase__slide.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 1;
}

.product-showcase__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-showcase__info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(24px, 4vw, 48px);
  gap: 10px;
}

.product-showcase__info span {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #9fe0dc;
}

.product-showcase__info strong {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.product-showcase__info p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 28ch;
}

.product-showcase__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  display: grid;
  place-items: center;
  transition: background 0.25s, border-color 0.25s;
}

.product-showcase__arrow:hover {
  background: rgba(0, 0, 0, 0.55);
  border-color: rgba(255, 255, 255, 0.5);
}

.product-showcase__arrow--prev {
  left: 0;
}

.product-showcase__arrow--next {
  right: 0;
}

.product-showcase__names {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 4px;
  margin-top: 28px;
  padding: 0 20px;
}

.product-showcase__names button {
  padding: 10px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.45);
  border-bottom: 2px solid transparent;
  transition: color 0.25s, border-color 0.25s;
}

.product-showcase__names button:hover {
  color: rgba(255, 255, 255, 0.85);
}

.product-showcase__names button.is-active {
  color: #fff;
  border-bottom-color: var(--accent);
}

@media (max-width: 768px) {
  .product-showcase__stage {
    padding: 0 44px;
  }

  .product-showcase__slide {
    grid-template-columns: 1fr;
  }

  .product-showcase__track {
    height: auto;
    min-height: 520px;
  }

  .product-showcase__slide img {
    height: 280px;
  }

  .product-showcase__info {
    padding: 22px 20px 28px;
  }

  .product-showcase__names button {
    padding: 8px 12px;
    font-size: 0.78rem;
  }
}

/* ========== Keystone / Vecig inspired sections ========== */
.lineup {
  padding: 56px 0 24px;
}

.lineup__row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.lineup__card {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: #111;
}

.lineup__card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.lineup__card:hover img {
  transform: scale(1.06);
}

.lineup__meta {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 20px 18px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
  color: #fff;
}

.lineup__meta span {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.75;
  margin-bottom: 4px;
}

.lineup__meta strong {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
}

.cat-dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 12px max(16px, calc((100% - 1360px) / 2));
}

.cat-dual__item {
  position: relative;
  min-height: clamp(240px, 32vw, 380px);
  overflow: hidden;
  display: block;
}

.cat-dual__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.6s var(--ease);
}

.cat-dual__item:hover img {
  transform: scale(1.05);
}

.cat-dual__copy {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  color: #fff;
  background: linear-gradient(transparent 30%, rgba(0, 0, 0, 0.7));
}

.cat-dual__copy p {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 8px;
  opacity: 0.85;
}

.cat-dual__copy h3 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 500;
  margin-bottom: 12px;
}

.cat-dual__copy span {
  font-size: 0.85rem;
  font-weight: 600;
}

.fit-band {
  background: #0f1115;
  color: #fff;
  padding: 64px 0;
}

.fit-band .section__label {
  color: #9fe0dc;
}

.fit-band .section__title {
  color: #fff;
}

.fit-band__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.fit-band__inner p {
  max-width: 48ch;
  color: rgba(255, 255, 255, 0.72);
  margin-top: 10px;
}

.fit-band__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.fit-band .btn--ghost {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.fit-band .btn--ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.spotlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.spotlight-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}

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

.spotlight-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.spotlight-card > div {
  padding: 16px 18px 20px;
}

.spotlight-card span {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.spotlight-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 8px;
  line-height: 1.35;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tech-card {
  padding: 28px 24px;
  border: 1px solid var(--border);
  background: #fff;
}

.tech-card__num {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 16px;
}

.tech-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.tech-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.advantage {
  padding: 56px 0;
  background: var(--bg-soft);
}

.advantage .section__title {
  margin-bottom: 28px;
}

.advantage__row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.advantage__item {
  display: block;
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--border);
  transition: border-color 0.25s, transform 0.25s;
}

.advantage__item:hover {
  border-color: var(--text);
  transform: translateY(-2px);
}

.advantage__item strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.advantage__item span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.wholesale {
  padding: 72px 0;
  background: #111;
  color: #fff;
}

.wholesale .section__label {
  color: #9fe0dc;
}

.wholesale .section__title {
  color: #fff;
}

.wholesale__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}

.wholesale__inner p {
  max-width: 48ch;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 10px;
}

.discover-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 12px max(16px, calc((100% - 1360px) / 2)) 48px;
}

.discover-duo__card {
  position: relative;
  min-height: 280px;
  overflow: hidden;
  display: block;
  color: #fff;
}

.discover-duo__card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.discover-duo__card:hover img {
  transform: scale(1.05);
}

.discover-duo__card > div {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  background: linear-gradient(transparent 35%, rgba(0, 0, 0, 0.72));
}

.discover-duo__card span {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.8;
  margin-bottom: 8px;
}

.discover-duo__card h3 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 500;
}

.subscribe {
  padding: 48px 0 64px;
  border-top: 1px solid var(--border);
}

.subscribe__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.subscribe__inner p {
  color: var(--text-muted);
  margin-top: 8px;
}

.subscribe__form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.subscribe__form input {
  height: 46px;
  min-width: 260px;
  padding: 0 16px;
  border: 1px solid var(--border-strong);
  font: inherit;
  outline: none;
}

.subscribe__form input:focus {
  border-color: var(--text);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .hero__slide.active {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 28px;
  }

  .hero__copy {
    order: 1;
    padding-bottom: 12px;
  }

  .hero__visual {
    order: 0;
    min-height: 340px;
  }

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

  .feature-block,
  .feature-block--reverse {
    grid-template-columns: 1fr;
  }

  .feature-block--reverse .feature-block__media {
    order: 0;
  }

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

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

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

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

@media (max-width: 768px) {
  .nav__links,
  .nav__actions .btn {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__links.mobile-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.98);
    padding: 96px 32px 48px;
    gap: 4px;
    z-index: 1;
  }

  .nav__links.mobile-open a {
    font-size: 1.2rem;
    padding: 14px 0;
    color: var(--text);
  }

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

  .category {
    min-height: 180px;
  }

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

  .feature-block__stats {
    grid-template-columns: 1fr;
  }

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

  .hero__specs {
    display: none;
  }

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

  .cat-dual {
    grid-template-columns: 1fr;
  }

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

  .tech-grid,
  .advantage__row,
  .discover-duo {
    grid-template-columns: 1fr;
  }

  .fit-band__inner,
  .wholesale__inner,
  .subscribe__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav__links.mobile-open {
    padding-top: calc(var(--header-offset) + 24px);
  }

  .nav__mega {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 12px;
    background: transparent;
  }
}

/* ========== Back to top ========== */
.back-top {
  position: fixed;
  right: 22px;
  bottom: 28px;
  z-index: 90;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--text);
  color: #fff;
  font-size: 1.25rem;
  line-height: 1;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), background 0.2s;
}

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

.back-top:hover {
  background: var(--accent);
}

@media (max-width: 768px) {
  .back-top {
    right: 16px;
    bottom: 20px;
    width: 44px;
    height: 44px;
  }
}