/* ==========================================================================
   YAMCO — 亚美康联  |  Global stylesheet
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --paper: #fbf9f4;
  --paper-2: #f2ece1;
  --paper-3: #eae2d4;
  --white: #ffffff;

  --ink: #12191f;
  --ink-2: #3b464e;
  --muted: #77807d;

  --line: #e3dbcd;
  --line-2: #eee8dc;

  --brand: #b8342a;
  --brand-dk: #96281f;
  --navy: #0e2430;
  --navy-2: #16323f;
  --gold: #a9884f;

  --radius: 3px;
  --radius-lg: 6px;

  --max: 1240px;
  --gutter: clamp(20px, 4.4vw, 40px);
  --sp-section: clamp(64px, 8.2vw, 130px);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Hiragino Sans",
    "Yu Gothic", "Microsoft YaHei", "Noto Sans SC", "Noto Sans JP", sans-serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --header-h: 74px;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img,
video,
svg {
  display: block;
  max-width: 100%;
}
img {
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}
h1,
h2,
h3,
h4,
p,
figure,
ul,
ol,
dl {
  margin: 0;
}
ul,
ol {
  padding: 0;
  list-style: none;
}
table {
  border-collapse: collapse;
  width: 100%;
}
::selection {
  background: var(--brand);
  color: #fff;
}

html[lang="ja"] body {
  line-height: 1.85;
  letter-spacing: 0.01em;
}
html[lang="zh"] body {
  letter-spacing: 0.005em;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  padding-block: var(--sp-section);
  position: relative;
}
.section--tight {
  padding-block: clamp(44px, 5vw, 76px);
}
.section--paper2 {
  background: var(--paper-2);
}
.section--white {
  background: var(--white);
}
.section--dark {
  background: var(--navy);
  color: #f2eee6;
}
.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: #fff;
}

/* ---------- Typography ---------- */
.eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}
.eyebrow--plain::before {
  display: none;
}
.section--dark .eyebrow {
  color: var(--gold);
}

h1,
.h1 {
  font-size: clamp(2.15rem, 5vw, 4rem);
  line-height: 1.06;
  font-weight: 700;
  letter-spacing: -0.025em;
}
h2,
.h2 {
  font-size: clamp(1.6rem, 3.1vw, 2.6rem);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -0.02em;
}
h3,
.h3 {
  font-size: clamp(1.12rem, 1.5vw, 1.32rem);
  line-height: 1.4;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.lead {
  font-size: clamp(1rem, 1.25vw, 1.13rem);
  line-height: 1.78;
  color: var(--ink-2);
}
.section--dark .lead {
  color: rgba(242, 238, 230, 0.78);
}
.muted {
  color: var(--muted);
}
.small {
  font-size: 0.86rem;
  line-height: 1.65;
}
.tnum {
  font-variant-numeric: tabular-nums;
}

.section-head {
  display: grid;
  gap: 18px;
  max-width: 720px;
  margin-bottom: clamp(34px, 4vw, 58px);
}
.section-head--center {
  margin-inline: auto;
  text-align: center;
  justify-items: center;
}
.section-head p {
  color: var(--ink-2);
}
.section--dark .section-head p {
  color: rgba(242, 238, 230, 0.75);
}

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--brand);
  --btn-fg: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease),
    border-color 0.25s var(--ease), color 0.25s var(--ease);
  white-space: nowrap;
}
.btn:hover {
  background: var(--brand-dk);
  transform: translateY(-1px);
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: rgba(18, 25, 31, 0.28);
}
.btn--ghost:hover {
  background: rgba(18, 25, 31, 0.05);
  border-color: var(--ink);
  color: var(--ink);
}
.section--dark .btn--ghost,
.hero .btn--ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}
.section--dark .btn--ghost:hover,
.hero .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}
.btn--light {
  background: #fff;
  color: var(--ink);
}
.btn--light:hover {
  background: var(--paper-2);
  color: var(--ink);
}
.btn--sm {
  padding: 10px 20px;
  font-size: 0.82rem;
}
.btn--block {
  width: 100%;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink);
  border-bottom: 1px solid rgba(18, 25, 31, 0.22);
  padding-bottom: 3px;
  transition: gap 0.25s var(--ease), border-color 0.25s var(--ease),
    color 0.25s var(--ease);
}
.link-arrow::after {
  content: "";
  width: 14px;
  height: 8px;
  background: currentColor;
  clip-path: polygon(0 45%, 68% 45%, 68% 15%, 100% 50%, 68% 85%, 68% 55%, 0 55%);
  transition: transform 0.25s var(--ease);
}
.link-arrow:hover {
  color: var(--brand);
  border-color: var(--brand);
  gap: 12px;
}
.section--dark .link-arrow {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}
.section--dark .link-arrow:hover {
  color: var(--gold);
  border-color: var(--gold);
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 80;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled,
.site-header--solid {
  background: rgba(251, 249, 244, 0.93);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--line);
}
.site-header.is-scrolled {
  box-shadow: 0 8px 30px -24px rgba(18, 25, 31, 0.5);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}
.logo__mark {
  font-size: 1.42rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1;
  color: var(--brand);
  padding-top: 2px;
}
.logo__rule {
  width: 1px;
  height: 20px;
  background: currentColor;
  opacity: 0.18;
}
.logo__sub {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  font-weight: 600;
  color: var(--ink-2);
  line-height: 1.2;
}
.site-header--onimage .logo__mark {
  color: #fff;
}
.site-header--onimage .logo__sub {
  color: rgba(255, 255, 255, 0.82);
}
.site-header--onimage .logo__rule {
  background: #fff;
  opacity: 0.35;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: clamp(6px, 1.6vw, 26px);
}
.nav__link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 550;
  letter-spacing: 0.02em;
  padding: 8px 4px;
  color: var(--ink-2);
  transition: color 0.2s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  bottom: 2px;
  height: 1px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--ink);
}
.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}
.site-header--onimage .nav__link {
  color: rgba(255, 255, 255, 0.86);
}
.site-header--onimage .nav__link:hover,
.site-header--onimage .nav__link[aria-current="page"] {
  color: #fff;
}
.site-header--onimage .nav__link::after {
  background: #fff;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

/* Language switch */
.lang {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.6);
}
.site-header--onimage .lang {
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.08);
}
.lang__btn {
  padding: 5px 11px;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  border-radius: 100px;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
  line-height: 1;
}
.lang__btn:hover {
  color: var(--ink);
}
.lang__btn[aria-pressed="true"] {
  background: var(--ink);
  color: #fff;
}
.site-header--onimage .lang__btn {
  color: rgba(255, 255, 255, 0.8);
}
.site-header--onimage .lang__btn[aria-pressed="true"] {
  background: #fff;
  color: var(--ink);
}

.header-cta {
  display: inline-flex;
}
.burger {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  margin-right: -8px;
}
.burger span {
  position: relative;
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), background 0.2s;
}
.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.3s var(--ease);
}
.burger span::before {
  top: -6px;
}
.burger span::after {
  top: 6px;
}
.site-header--onimage .burger span,
.site-header--onimage .burger span::before,
.site-header--onimage .burger span::after {
  background: #fff;
}
body.nav-open .burger span {
  background: transparent !important;
}
body.nav-open .burger span::before {
  transform: translateY(6px) rotate(45deg);
  background: var(--ink);
}
body.nav-open .burger span::after {
  transform: translateY(-6px) rotate(-45deg);
  background: var(--ink);
}

/* Drawer */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: var(--paper);
  padding: calc(var(--header-h) + 22px) var(--gutter) 40px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
    visibility 0.3s;
  overflow-y: auto;
}
body.nav-open .drawer {
  opacity: 1;
  visibility: visible;
  transform: none;
}
body.nav-open {
  overflow: hidden;
}
.drawer__link {
  font-size: 1.42rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.drawer__link small {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
}
.drawer__foot {
  margin-top: auto;
  padding-top: 30px;
  display: grid;
  gap: 14px;
}
.drawer__contact {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--ink-2);
}

/* ---------- Hero (home) ---------- */
.hero {
  position: relative;
  min-height: min(92vh, 900px);
  display: flex;
  align-items: flex-end;
  padding-top: calc(var(--header-h) + 40px);
  padding-bottom: clamp(38px, 5vw, 64px);
  background: var(--navy);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% 55%;
  animation: heroZoom 18s var(--ease) forwards;
}
@keyframes heroZoom {
  from {
    transform: scale(1.06);
  }
  to {
    transform: scale(1);
  }
}
.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
      100deg,
      rgba(9, 20, 27, 0.92) 0%,
      rgba(9, 20, 27, 0.72) 34%,
      rgba(9, 20, 27, 0.34) 62%,
      rgba(9, 20, 27, 0.55) 100%
    ),
    linear-gradient(to top, rgba(9, 20, 27, 0.85), transparent 55%);
}
.hero__inner {
  position: relative;
  width: 100%;
}
.hero .eyebrow {
  color: var(--gold);
}
.hero h1 {
  max-width: 15em;
  margin-block: 20px 0;
  text-wrap: balance;
  color: #fff;
}
.hero__sub {
  max-width: 34em;
  margin-top: 22px;
  font-size: clamp(0.98rem, 1.2vw, 1.1rem);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 46px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.62);
}
.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.hero__meta span::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
}

/* Page hero (inner pages) */
.page-hero {
  padding-top: calc(var(--header-h) + clamp(48px, 7vw, 96px));
  padding-bottom: clamp(30px, 4vw, 56px);
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
}
.page-hero__inner {
  display: grid;
  gap: 16px;
}
.page-hero p {
  color: var(--ink-2);
  max-width: 46em;
}
.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 6px;
}
.crumbs a:hover {
  color: var(--brand);
}
.crumbs span::after {
  content: "/";
  margin-left: 8px;
  opacity: 0.5;
}

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.stat {
  padding: 30px clamp(10px, 2vw, 26px) 30px 0;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}
.stat:last-child {
  border-right: 0;
}
.stat__num {
  font-size: clamp(1.9rem, 3.4vw, 2.9rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.stat__num em {
  font-style: normal;
  font-size: 0.55em;
  font-weight: 600;
  color: var(--gold);
  margin-left: 2px;
}
.stat__label {
  margin-top: 8px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: rgba(242, 238, 230, 0.62);
}
.stat__note {
  margin-top: 3px;
  font-size: 0.74rem;
  color: rgba(242, 238, 230, 0.38);
}

/* ---------- Product cards ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(16px, 2.2vw, 30px);
}
.pcard {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease),
    border-color 0.3s;
}
.pcard:hover {
  transform: translateY(-4px);
  border-color: var(--paper-3);
  box-shadow: 0 26px 50px -36px rgba(18, 25, 31, 0.45);
}
.pcard__media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(180deg, #fdfcfa, #f3eee6);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6%;
}
.pcard__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.7s var(--ease);
}
.pcard:hover .pcard__media img {
  transform: scale(1.035);
}
.pcard__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--brand);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(184, 52, 42, 0.2);
  padding: 5px 10px;
  border-radius: 100px;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.pcard__body {
  padding: clamp(20px, 2.4vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.pcard__model {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}
.pcard__name {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  font-weight: 680;
  letter-spacing: -0.015em;
  line-height: 1.3;
}
.pcard__desc {
  font-size: 0.92rem;
  color: var(--ink-2);
  line-height: 1.7;
}
.pcard__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}
.chip {
  font-size: 0.74rem;
  letter-spacing: 0.02em;
  color: var(--ink-2);
  background: var(--paper-2);
  border-radius: 100px;
  padding: 5px 11px;
  line-height: 1.3;
}
.pcard__foot {
  margin-top: auto;
  padding-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-top: 1px solid var(--line-2);
}

/* Coming soon tile */
.pcard--soon {
  display: grid;
  place-items: center;
  text-align: center;
  background: transparent;
  border-style: dashed;
  border-color: var(--line);
  min-height: 260px;
  padding: 30px;
  gap: 8px;
}
.pcard--soon:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--paper-3);
}
.pcard--soon strong {
  font-size: 1.05rem;
  font-weight: 650;
}
.pcard--soon span {
  font-size: 0.85rem;
  color: var(--muted);
  max-width: 24em;
}

/* ---------- Feature grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.feature {
  background: var(--paper);
  padding: clamp(22px, 2.6vw, 34px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.feature__icon {
  width: 40px;
  height: 40px;
  color: var(--brand);
}
.feature__icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.feature h3 {
  font-size: 1.02rem;
  margin-top: 4px;
}
.feature p {
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.72;
}

/* ---------- Split ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 76px);
  align-items: center;
}
.split--media-right {
  grid-template-columns: 1.05fr 0.95fr;
}
.split__media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper-2);
}
.split__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}
.split__body {
  display: grid;
  gap: 18px;
  align-content: center;
}
.split--tall .split__media img {
  aspect-ratio: 3 / 4;
}

.media-stack {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr 1fr;
}
.media-stack img {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  aspect-ratio: 3 / 4;
}
.media-stack img:first-child {
  aspect-ratio: 3 / 4;
}

/* ---------- Cert list ---------- */
.certs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.cert {
  font-size: 0.74rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink-2);
  background: var(--white);
}
.section--dark .cert {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.22);
  color: rgba(255, 255, 255, 0.8);
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: clamp(12px, 2vw, 26px);
  padding-top: 54px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 22px;
  height: 1px;
  background: var(--line);
}
.tl-item {
  position: relative;
  padding-top: 26px;
}
.tl-item::before {
  content: "";
  position: absolute;
  top: -38px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--brand);
  transform: translateY(-50%);
  margin-top: 0.5px;
}
.tl-year {
  font-size: 1.36rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--brand);
  line-height: 1;
}
.tl-title {
  margin-top: 10px;
  font-size: 0.94rem;
  font-weight: 620;
  line-height: 1.5;
}
.tl-note {
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.65;
}

/* ---------- Dark band CTA ---------- */
.cta-band {
  position: relative;
  background: var(--navy);
  color: #fff;
  overflow: hidden;
}
.cta-band__bg {
  position: absolute;
  inset: 0;
  opacity: 0.28;
}
.cta-band__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    var(--navy) 12%,
    rgba(14, 36, 48, 0.82) 55%,
    rgba(14, 36, 48, 0.55)
  );
}
.cta-band__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  padding-block: clamp(50px, 6vw, 84px);
}
.cta-band h2 {
  max-width: 20em;
  color: #fff;
}
.cta-band p {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.72);
  max-width: 34em;
  font-size: 0.95rem;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: rgba(242, 238, 230, 0.66);
  padding-top: clamp(48px, 6vw, 76px);
  font-size: 0.88rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: clamp(36px, 4vw, 54px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .logo__mark {
  color: #fff;
}
.footer-brand .logo__sub {
  color: rgba(255, 255, 255, 0.6);
}
.footer-brand p {
  margin-top: 16px;
  max-width: 26em;
  line-height: 1.75;
  font-size: 0.86rem;
}
.footer-col h4 {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.42);
  font-weight: 600;
  margin-bottom: 14px;
}
.footer-col li + li {
  margin-top: 9px;
}
.footer-col a:hover {
  color: #fff;
}
.footer-contact {
  display: grid;
  gap: 9px;
}
.footer-contact dt {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.34);
}
.footer-contact dd {
  margin: 0 0 6px;
  color: rgba(255, 255, 255, 0.82);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 22px;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.38);
}
.footer-bottom a:hover {
  color: rgba(255, 255, 255, 0.8);
}
.footer-langs {
  display: flex;
  gap: 14px;
}

/* ---------- Product detail ---------- */
.pd-hero {
  padding-top: calc(var(--header-h) + clamp(26px, 4vw, 46px));
  background: linear-gradient(180deg, var(--paper-2), var(--paper));
  border-bottom: 1px solid var(--line);
  padding-bottom: clamp(30px, 4vw, 54px);
}
.pd-hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(24px, 4vw, 60px);
  align-items: center;
  margin-top: 18px;
}
.pd-hero__media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3.4;
  padding: 5%;
}
.pd-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.pd-hero__body {
  display: grid;
  gap: 16px;
  align-content: center;
}
.pd-hero__model {
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.pd-hero h1 {
  font-size: clamp(1.85rem, 3.6vw, 3rem);
}
.pd-hero__tagline {
  font-size: clamp(0.98rem, 1.2vw, 1.08rem);
  color: var(--ink-2);
  line-height: 1.75;
  max-width: 34em;
}
.pd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.keynums {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}
.keynum {
  background: var(--paper);
  padding: clamp(18px, 2.4vw, 28px) clamp(12px, 1.6vw, 22px);
}
.keynum__v {
  font-size: clamp(1.15rem, 2vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.keynum__l {
  margin-top: 6px;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* Feature rows on product page */
.frow {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4.5vw, 64px);
  align-items: center;
}
.frow + .frow {
  margin-top: clamp(46px, 6vw, 88px);
}
.frow:nth-child(even) .frow__media {
  order: 2;
}
.frow__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper-2);
}
.frow__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.frow__body {
  display: grid;
  gap: 14px;
  align-content: center;
}
.frow__body p {
  color: var(--ink-2);
  font-size: 0.95rem;
}
.frow__index {
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--brand);
  font-weight: 650;
}
.bullets {
  display: grid;
  gap: 9px;
  margin-top: 4px;
}
.bullets li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--ink-2);
  line-height: 1.65;
}
.bullets li::before {
  content: "";
  flex: 0 0 auto;
  width: 5px;
  height: 5px;
  margin-top: 0.62em;
  border-radius: 50%;
  background: var(--brand);
}

/* Detail gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.gallery__item {
  position: relative;
  background: #fff;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: zoom-in;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5%;
}
.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.5s var(--ease);
}
.gallery__item:hover img {
  transform: scale(1.05);
}

/* Spec table */
.spec-table {
  border-top: 1px solid var(--ink);
  font-size: 0.92rem;
}
.spec-table tr {
  border-bottom: 1px solid var(--line);
}
.spec-table th,
.spec-table td {
  padding: 15px 12px 15px 0;
  text-align: left;
  vertical-align: top;
}
.spec-table th {
  width: 32%;
  font-weight: 600;
  color: var(--muted);
  font-size: 0.84rem;
  letter-spacing: 0.03em;
}
.spec-table td {
  color: var(--ink);
  font-weight: 550;
  font-variant-numeric: tabular-nums;
}
.spec-table td.is-tbd {
  color: var(--muted);
  font-weight: 400;
}
.spec-note {
  margin-top: 14px;
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.6;
}

/* Video */
.video-block {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #0c1a22;
  aspect-ratio: 16 / 9;
}
.video-block video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #0c1a22;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: rgba(10, 16, 21, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4vw;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease), visibility 0.25s;
}
.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 2px;
}
.lightbox__close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
}
.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* ---------- Forms ---------- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.field {
  display: grid;
  gap: 7px;
}
.field--full {
  grid-column: 1 / -1;
}
.field label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  font-weight: 600;
}
.field input,
.field textarea,
.field select {
  font: inherit;
  font-size: 0.92rem;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}
.field textarea {
  min-height: 128px;
  resize: vertical;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(18, 25, 31, 0.06);
}
.form-hint {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.6;
}

/* Contact cards */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(28px, 5vw, 70px);
  align-items: start;
}
.info-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.info-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 4px;
}
.info-item dt {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.info-item dd {
  margin: 0;
  font-size: 1rem;
  color: var(--ink);
  line-height: 1.6;
}
.tbd {
  display: inline-block;
  font-size: 0.86rem;
  color: var(--muted);
  border-bottom: 1px dashed var(--line);
}
.form-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 38px);
}

/* ---------- Reveal animation ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
  transition-delay: var(--d, 0ms);
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

/* Skip link */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 var(--radius) 0;
}
.skip:focus {
  left: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav {
    display: none;
  }
  .burger {
    display: inline-flex;
  }
  .header-cta {
    display: none;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    row-gap: 34px;
  }
  .timeline {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 34px;
    padding-top: 40px;
  }
  .timeline::before {
    display: none;
  }
  .tl-item::before {
    display: none;
  }
  .tl-item {
    padding-top: 0;
    padding-left: 16px;
    border-left: 1px solid var(--line);
  }
}

@media (max-width: 860px) {
  :root {
    --header-h: 64px;
  }
  body {
    font-size: 16px;
  }
  .split,
  .split--media-right,
  .frow,
  .contact-grid,
  .pd-hero__grid {
    grid-template-columns: 1fr;
    gap: clamp(20px, 5vw, 34px);
  }
  .frow:nth-child(even) .frow__media {
    order: 0;
  }
  .split--tall .split__media img {
    aspect-ratio: 4 / 3;
  }
  .stats {
    grid-template-columns: 1fr 1fr;
  }
  .stat {
    padding-block: 22px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }
  .stat:nth-child(2n) {
    border-right: 0;
    padding-left: 16px;
  }
  .stat:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
  .product-grid {
    grid-template-columns: 1fr;
  }
  .gallery {
    grid-template-columns: repeat(3, 1fr);
  }
  .keynums {
    grid-template-columns: 1fr 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .hero {
    min-height: 82vh;
  }
  .hero__meta {
    gap: 8px 18px;
  }
  .pd-hero__media {
    aspect-ratio: 4 / 3;
  }
  .section-head {
    margin-bottom: 30px;
  }
}

@media (max-width: 560px) {
  .logo__sub {
    display: none;
  }
  .logo__rule {
    display: none;
  }
  .gallery {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .timeline {
    grid-template-columns: 1fr;
  }
  .cta-band__inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .spec-table th {
    width: 40%;
  }
  .lang__btn {
    padding: 5px 8px;
  }
  .btn {
    padding: 13px 22px;
  }
  .hero__actions .btn {
    flex: 1 1 auto;
  }
}

/* Print */
@media print {
  .site-header,
  .drawer,
  .cta-band,
  .site-footer,
  .hero__media {
    display: none !important;
  }
  body {
    background: #fff;
  }
}

/* ---------- Dark 3-column grid (partner models) ---------- */
.feature-grid--dark {
  grid-template-columns: repeat(3, 1fr);
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.14);
}
.feature--dark {
  background: var(--navy);
}
.feature--dark p {
  color: rgba(242, 238, 230, 0.68);
}
.feature__num {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  font-weight: 650;
}
@media (max-width: 860px) {
  .feature-grid--dark {
    grid-template-columns: 1fr;
  }
}

/* ---------- Product imagery blending ---------- */
.pcard__media img,
.gallery__item img {
  mix-blend-mode: multiply;
}

/* ---------- Fixes: ghost button & certs on dark surfaces ---------- */
.cta-band .btn--ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.42);
}
.cta-band .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
}
.site-footer .cert {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.72);
}

/* ---------- Key numbers wrapper ---------- */
.keynums-wrap {
  padding-block: clamp(30px, 4vw, 52px);
}

/* ---------- Gallery: float products on section background ---------- */
.gallery__item {
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 3%;
}
.gallery__item:hover {
  background: rgba(255, 255, 255, 0.55);
}
.video-block video {
  object-fit: cover;
}

/* ---------- Japanese line breaking ---------- */
html[lang="ja"] body {
  word-break: auto-phrase;
  line-break: strict;
}

/* ---------- Mobile hero contrast ---------- */
@media (max-width: 860px) {
  .hero__media img {
    object-position: 58% 60%;
  }
  .hero__media::after {
    background: linear-gradient(
        to top,
        rgba(9, 20, 27, 0.96) 0%,
        rgba(9, 20, 27, 0.86) 34%,
        rgba(9, 20, 27, 0.45) 68%,
        rgba(9, 20, 27, 0.55) 100%
      );
  }
  .hero h1 {
    font-size: clamp(1.85rem, 8.6vw, 2.5rem);
  }
}