/* ==========================================================================
   LUMENOR — industrial lighting site
   Design tokens → layout primitives → components → pages
   ========================================================================== */

:root {
  --ink: #0d1520;
  --ink-2: #1c2734;
  --text: #3b4553;
  --muted: #6d7887;
  --faint: #98a2b0;
  --line: #e2e6ec;
  --line-2: #eef1f5;
  --surface: #ffffff;
  --alt: #f6f7f9;
  --alt-2: #eceff3;
  --accent: #d78a1f;
  --accent-ink: #b06d0c;
  --accent-soft: #fdf4e5;
  --ok: #1f7a4d;
  --err: #b23b3b;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --container: 1200px;
  --radius: 3px;
  --radius-lg: 6px;

  --shadow-sm: 0 1px 2px rgba(13, 21, 32, 0.06);
  --shadow-md: 0 6px 20px -8px rgba(13, 21, 32, 0.18);
  --shadow-lg: 0 24px 60px -28px rgba(13, 21, 32, 0.35);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.nav-open {
  overflow: hidden;
}

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

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

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 650;
  letter-spacing: -0.018em;
  line-height: 1.16;
  text-wrap: balance;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
}

::selection {
  background: var(--accent-soft);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- layout primitives ---------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.container--narrow {
  max-width: 880px;
}

.section {
  padding: clamp(56px, 7vw, 104px) 0;
}

.section--alt {
  background: var(--alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  max-width: 660px;
  margin-bottom: clamp(32px, 4vw, 52px);
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-ink);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
}

.section-head--center .eyebrow::before {
  display: none;
}

.section-title {
  font-size: clamp(26px, 3.4vw, 40px);
}

.section-sub {
  margin-top: 16px;
  font-size: clamp(15px, 1.2vw, 17px);
  color: var(--muted);
  line-height: 1.7;
}

/* ---------- buttons ---------- */

.btn {
  --btn-bg: var(--ink);
  --btn-fg: #fff;
  --btn-bd: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.25s var(--ease), background 0.2s, box-shadow 0.25s;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn--accent {
  --btn-bg: var(--accent);
  --btn-bd: var(--accent);
  --btn-fg: #1a1206;
}

.btn--accent:hover {
  --btn-bg: #c97d15;
  --btn-bd: #c97d15;
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-bd: var(--line);
}

.btn--ghost:hover {
  --btn-bd: var(--ink);
  box-shadow: var(--shadow-sm);
}

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

.btn .arrow {
  transition: transform 0.25s var(--ease);
}

.btn:hover .arrow {
  transform: translateX(3px);
}

/* ---------- header ---------- */

.header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.4vw, 36px);
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--ink);
}

.brand__mark {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand__name {
  font-size: 16px;
  font-weight: 750;
  letter-spacing: 0.06em;
}

.brand__tag {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 32px);
  margin-left: auto;
}

.nav__link {
  position: relative;
  padding: 6px 0;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-2);
  transition: color 0.2s;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1.5px;
  background: var(--accent);
  transition: right 0.3s var(--ease);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  right: 0;
}

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

/* language switcher */

.lang {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--alt);
}

.lang__item {
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-radius: 2px;
  transition: background 0.2s, color 0.2s;
}

.lang__item:hover {
  color: var(--ink);
}

.lang__item[aria-current="true"] {
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.header .btn {
  padding: 9px 16px;
  font-size: 13.5px;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  position: relative;
  width: 16px;
  height: 1.5px;
  background: var(--ink);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.25s var(--ease);
}

.nav-toggle span::before {
  top: -5px;
}

.nav-toggle span::after {
  top: 5px;
}

body.nav-open .nav-toggle span {
  background: transparent;
}

body.nav-open .nav-toggle span::before {
  transform: translateY(5px) rotate(45deg);
}

body.nav-open .nav-toggle span::after {
  transform: translateY(-5px) rotate(-45deg);
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 6vw, 88px) 0 clamp(56px, 6vw, 92px);
  background:
    radial-gradient(120% 90% at 100% 0%, #fff8ec 0%, transparent 55%),
    linear-gradient(180deg, #fbfcfd 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(13, 21, 32, 0.045) 1px, transparent 1px);
  background-size: 88px 100%;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  pointer-events: none;
}

.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.hero__title {
  font-size: clamp(32px, 4.6vw, 58px);
  letter-spacing: -0.028em;
  line-height: 1.08;
}

.hero__sub {
  max-width: 30em;
  margin-top: 22px;
  font-size: clamp(15px, 1.25vw, 17.5px);
  line-height: 1.72;
  color: var(--muted);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero__points {
  display: grid;
  gap: 9px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.hero__point {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-2);
}

.hero__point svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: var(--accent);
}

.hero__media {
  position: relative;
}

.hero__img {
  position: relative;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--alt);
  box-shadow: var(--shadow-lg);
}

.hero__badge {
  position: absolute;
  left: -14px;
  bottom: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-md);
}

.hero__badge-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.hero__badge-label {
  font-size: 11.5px;
  line-height: 1.35;
  color: var(--muted);
  max-width: 12em;
}

/* ---------- stats ---------- */

.stats {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stats__item {
  padding: 30px clamp(12px, 2vw, 28px) 30px 0;
  border-right: 1px solid var(--line-2);
}

.stats__item:last-child {
  border-right: 0;
}

.stats__value {
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stats__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
}

.stats__label {
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- product cards ---------- */

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: clamp(16px, 2vw, 24px);
}

.card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}

.card:hover {
  transform: translateY(-3px);
  border-color: #d3d9e2;
  box-shadow: var(--shadow-md);
}

.card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: linear-gradient(160deg, #f7f8fa, #e9edf2);
  border-bottom: 1px solid var(--line-2);
}

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

.card:hover .card__media img {
  transform: scale(1.035);
}

.card__model {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 4px 8px;
  border-radius: 2px;
  background: rgba(13, 21, 32, 0.82);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  backdrop-filter: blur(4px);
}

.card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 18px 20px 20px;
}

.card__title {
  font-size: 16.5px;
  font-weight: 650;
  line-height: 1.35;
}

.card__desc {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.card__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.chip {
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--alt);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.02em;
  color: var(--ink-2);
  white-space: nowrap;
}

.card__foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--line-2);
}

.card__price-label {
  font-size: 11px;
  color: var(--faint);
}

.card__price {
  font-size: 15.5px;
  font-weight: 650;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.card__price span {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--muted);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-ink);
  white-space: nowrap;
}

/* ---------- feature / why cards ---------- */

.why-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;
}

.why-card {
  padding: clamp(20px, 2.4vw, 30px);
  background: var(--surface);
}

.why-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent-ink);
}

.why-card__title {
  font-size: 15.5px;
  font-weight: 650;
}

.why-card__text {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- CTA band ---------- */

.cta-band {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #dfe4eb;
}

.cta-band::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -60%;
  width: 60%;
  height: 220%;
  background: radial-gradient(closest-side, rgba(215, 138, 31, 0.22), transparent);
  pointer-events: none;
}

.cta-band__inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: clamp(20px, 4vw, 56px);
  padding: clamp(40px, 5vw, 64px) 0;
}

.cta-band__title {
  max-width: 22em;
  color: #fff;
  font-size: clamp(22px, 2.6vw, 32px);
}

.cta-band__sub {
  max-width: 42em;
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.7;
  color: #aab5c4;
}

.cta-band .btn--accent {
  flex-shrink: 0;
}

/* ---------- page header (inner pages) ---------- */

.page-head {
  padding: clamp(36px, 4.4vw, 64px) 0 clamp(24px, 3vw, 36px);
  background: linear-gradient(180deg, #fbfcfd, #fff);
  border-bottom: 1px solid var(--line);
}

.page-head--slim {
  padding: 20px 0 18px;
}

.page-head--slim .breadcrumb {
  margin-bottom: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--faint);
}

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

.breadcrumb__sep {
  color: #cfd6e0;
}

.page-title {
  font-size: clamp(28px, 3.6vw, 42px);
}

.page-sub {
  max-width: 46em;
  margin-top: 14px;
  font-size: clamp(14.5px, 1.15vw, 16.5px);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- filters ---------- */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(24px, 3vw, 36px);
}

.filter {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-2);
  font-size: 13.5px;
  font-weight: 500;
  transition: all 0.2s;
}

.filter:hover {
  border-color: var(--ink);
}

.filter[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

/* ---------- product detail ---------- */

.pd {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.pd__media {
  position: sticky;
  top: 92px;
}

.pd__img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3.2;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--alt);
  box-shadow: var(--shadow-sm);
}

.pd__model {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-ink);
}

.pd__title {
  font-size: clamp(24px, 2.8vw, 34px);
}

.pd__summary {
  margin-top: 14px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--muted);
}

.pd__price {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 24px 0;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  background: var(--alt);
}

.pd__price-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.pd__price-label {
  font-size: 12.5px;
  color: var(--muted);
}

.pd__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.pd__meta-item {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.pd__meta-label {
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--faint);
}

.pd__meta-value {
  margin-top: 3px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}

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

.block {
  margin-top: clamp(40px, 5vw, 64px);
  padding-top: clamp(28px, 3.4vw, 40px);
  border-top: 1px solid var(--line);
}

.block__title {
  font-size: 19px;
  margin-bottom: 18px;
}

.prose p {
  margin-bottom: 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}

.prose p:last-child {
  margin-bottom: 0;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.spec-table tr {
  border-bottom: 1px solid var(--line-2);
}

.spec-table tr:last-child {
  border-bottom: 0;
}

.spec-table th {
  width: 40%;
  padding: 11px 12px 11px 0;
  text-align: left;
  font-weight: 500;
  color: var(--muted);
  vertical-align: top;
}

.spec-table td {
  padding: 11px 0;
  color: var(--ink);
  font-weight: 550;
  font-variant-numeric: tabular-nums;
}

.feature-list {
  display: grid;
  gap: 10px;
}

.feature-list li {
  position: relative;
  padding-left: 26px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 12px;
  height: 7px;
  border-left: 1.6px solid var(--accent);
  border-bottom: 1.6px solid var(--accent);
  transform: rotate(-45deg);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--alt);
  font-size: 13px;
  color: var(--ink-2);
}

/* ---------- about page ---------- */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.about-figure {
  position: relative;
}

.about-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
}

.cap-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.cap-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  background: var(--surface);
  font-size: 14.5px;
  color: var(--text);
}

.cap-list .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  padding-top: 3px;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.cert {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.cert__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-ink);
}

.cert__text {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-2);
}

/* ---------- contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.info-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.info-item {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  background: var(--surface);
}

.info-item__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--alt);
  color: var(--ink-2);
}

.info-item__label {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
}

.info-item__value {
  margin-top: 2px;
  font-size: 14.5px;
  color: var(--ink);
  word-break: break-word;
}

.info-item__value a:hover {
  color: var(--accent-ink);
}

/* ---------- form ---------- */

.form-card {
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 12.5px;
  font-weight: 550;
  color: var(--ink-2);
}

.field label .req {
  color: var(--accent);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fcfdfe;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.field textarea {
  min-height: 118px;
  resize: vertical;
  line-height: 1.6;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(215, 138, 31, 0.13);
}

.field input::placeholder,
.field textarea::placeholder {
  color: #b3bbc6;
}

.form-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 20px;
}

.form-note {
  flex: 1 1 200px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--faint);
}

.form-status {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.5;
  display: none;
}

.form-status.is-ok {
  display: block;
  color: var(--ok);
}

.form-status.is-err {
  display: block;
  color: var(--err);
}

/* ---------- footer ---------- */

.footer {
  padding: clamp(44px, 5vw, 64px) 0 28px;
  background: var(--ink);
  color: #98a4b4;
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr) minmax(0, 1.3fr);
  gap: clamp(28px, 4vw, 56px);
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer .brand {
  color: #fff;
}

.footer .brand__tag {
  color: #6c7787;
}

.footer__desc {
  max-width: 30em;
  margin-top: 16px;
  font-size: 13.5px;
  line-height: 1.7;
}

.footer__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #6c7787;
}

.footer__links {
  display: grid;
  gap: 9px;
}

.footer__links a,
.footer__links span {
  font-size: 13.5px;
  color: #b3bdcb;
}

.footer__links a:hover {
  color: #fff;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 24px;
  font-size: 12.5px;
  color: #6c7787;
}

/* ---------- reveal animation ---------- */

.reveal {
  opacity: 1;
}

.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  will-change: opacity, transform;
}

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

.no-motion .reveal,
.no-motion .js .reveal {
  opacity: 1;
  transform: none;
  transition: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
  .card:hover,
  .btn:hover {
    transform: none;
  }
}

/* ---------- responsive ---------- */

@media (max-width: 1024px) {
  .hero__grid,
  .pd,
  .about-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__media {
    order: -1;
    max-width: 620px;
  }

  .pd__media {
    position: static;
  }

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

  .footer__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .footer__grid > :first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .nav,
  .header__actions .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header__inner {
    height: 60px;
  }

  .nav {
    position: fixed;
    inset: 60px 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 20px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s var(--ease);
  }

  body.nav-open .nav {
    display: flex;
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    padding: 14px 0;
    border-bottom: 1px solid var(--line-2);
    font-size: 16px;
  }

  .nav__link::after {
    display: none;
  }

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

  .stats__item {
    padding: 20px 16px 20px 0;
  }

  .stats__item:nth-child(2) {
    border-right: 0;
  }

  .stats__item:nth-child(1),
  .stats__item:nth-child(2) {
    border-bottom: 1px solid var(--line-2);
  }

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

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

  .hero__badge {
    left: 8px;
    bottom: 8px;
    padding: 10px 12px;
  }

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

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

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

/* --------------------------------------------------------------------------
   XFLY overrides — 产品照片为白底影棚图，图片容器统一改白
   -------------------------------------------------------------------------- */
.card__media {
  background: #fff;
}

.pd__img,
.hero__img {
  background: #fff;
  object-fit: contain;
  padding: 4px;
}

.hero__img {
  aspect-ratio: 4 / 3;
}

.about-figure img {
  background: #fff;
}

.card__price--ask {
  font-weight: 600;
  color: var(--muted, #64707f);
  letter-spacing: 0.01em;
}

.pd__price-num {
  letter-spacing: -0.01em;
}

/* --------------------------------------------------------------------------
   RTL — 阿拉伯文排版镜像
   -------------------------------------------------------------------------- */
[dir="rtl"] {
  --font-sans: "SF Arabic", "Geeza Pro", "Noto Sans Arabic", "Segoe UI",
    Tahoma, "PingFang SC", "Microsoft YaHei", sans-serif;
}

[dir="rtl"] body {
  font-family: var(--font-sans);
}

/* 阿拉伯文不使用字距，否则连写会断开 */
[dir="rtl"],
[dir="rtl"] .eyebrow,
[dir="rtl"] .btn,
[dir="rtl"] .nav__link,
[dir="rtl"] .chip,
[dir="rtl"] .card__model,
[dir="rtl"] .tag,
[dir="rtl"] .footer__title,
[dir="rtl"] .block__title {
  letter-spacing: 0;
}

[dir="rtl"] h1,
[dir="rtl"] h2,
[dir="rtl"] h3,
[dir="rtl"] .hero__title,
[dir="rtl"] .page-title,
[dir="rtl"] .section-title {
  line-height: 1.34;
}

/* 统计条：分隔线换到左侧，内边距镜像 */
[dir="rtl"] .stats__item {
  padding: 30px 0 30px clamp(12px, 2vw, 28px);
  border-right: 0;
  border-left: 1px solid var(--line-2);
}

[dir="rtl"] .stats__item:last-child {
  border-left: 0;
}

/* 参数表：标签列靠右 */
[dir="rtl"] .spec-table th {
  padding: 11px 0 11px 12px;
  text-align: right;
}

/* 特性列表：勾选符号移到右端 */
[dir="rtl"] .feature-list li {
  padding-left: 0;
  padding-right: 26px;
}

[dir="rtl"] .feature-list li::before {
  left: auto;
  right: 0;
}

/* 价格块强调边换边 */
[dir="rtl"] .pd__price {
  border-left: 1px solid var(--line);
  border-right: 3px solid var(--accent);
}

/* 首页角标 */
[dir="rtl"] .hero__badge {
  left: auto;
  right: -14px;
}

/* 箭头图标镜像 */
[dir="rtl"] .btn svg,
[dir="rtl"] .card__link svg {
  transform: scaleX(-1);
}

[dir="rtl"] .card__link:hover svg,
[dir="rtl"] .btn:hover svg {
  transform: scaleX(-1) translateX(3px);
}

@media (max-width: 860px) {
  [dir="rtl"] .stats__item {
    padding: 20px 0 20px 16px;
  }

  [dir="rtl"] .stats__item:nth-child(2) {
    border-left: 0;
  }

  [dir="rtl"] .hero__badge {
    left: auto;
    right: 8px;
  }
}

/* 技术参数表的小节标题行 */
.spec-table__group th {
  padding: 20px 0 8px;
  text-align: left;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-ink);
  border-bottom: 1px solid var(--line);
}

.spec-table tr.spec-table__group:first-child th {
  padding-top: 0;
}

[dir="rtl"] .spec-table__group th {
  padding: 20px 0 8px;
  text-align: right;
  letter-spacing: 0;
}

/* 技术参数表的小节标题行 */
.spec-table__group th {
  padding: 20px 0 8px;
  text-align: left;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-ink);
  border-bottom: 1px solid var(--line);
}

.spec-table tr.spec-table__group:first-child th {
  padding-top: 0;
}

[dir="rtl"] .spec-table__group th {
  padding: 20px 0 8px;
  text-align: right;
  letter-spacing: 0;
}