/* ============================================================
   Design tokens
   ============================================================ */
:root {
  --ink: #0e1418;
  --ink-soft: #39434c;
  --muted: #6b7580;
  --bg: #ffffff;
  --bg-alt: #f5f6f6;
  --bg-deep: #0d1512;
  --line: #e2e5e7;
  --line-strong: #c9cfd3;

  --accent: #0f5c50;
  --accent-hover: #0a463c;
  --accent-soft: #e7f1ee;
  --accent-line: #bcd9d2;
  --amber: #e8a33d;

  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 16px;

  --shadow-s: 0 1px 2px rgba(14, 20, 24, 0.06);
  --shadow-m: 0 8px 24px -12px rgba(14, 20, 24, 0.18);
  --shadow-l: 0 24px 60px -28px rgba(14, 20, 24, 0.35);

  --container: 1200px;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(3.5rem, 7vw, 6rem);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif;
  --font-ar: "Segoe UI", Tahoma, "Noto Naskh Arabic", "Geeza Pro", Arial, sans-serif;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html[dir="rtl"] body {
  font-family: var(--font-ar);
  line-height: 1.8;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4,
p,
figure,
ul,
ol {
  margin: 0;
}

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

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

::selection {
  background: var(--accent);
  color: #fff;
}

/* ============================================================
   Layout primitives
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.section {
  padding-block: var(--section-y);
}

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

.section--tight {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.stack > * + * {
  margin-block-start: 1rem;
}

/* ============================================================
   Typography
   ============================================================ */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

html[dir="rtl"] .eyebrow {
  letter-spacing: 0;
  text-transform: none;
  font-size: 0.85rem;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: currentColor;
}

.h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 700;
  text-wrap: balance;
}

.h2 {
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
  text-wrap: balance;
}

.h3 {
  font-size: clamp(1.1rem, 1.6vw, 1.3rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 650;
}

.lead {
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  color: var(--ink-soft);
  max-width: 62ch;
}

.muted {
  color: var(--muted);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-block-end: clamp(2rem, 4vw, 3rem);
}

.section-head__text {
  max-width: 60ch;
}

.section-head__text .lead {
  margin-block-start: 0.85rem;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.35rem;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease,
    color 0.18s ease, transform 0.18s ease;
  white-space: nowrap;
}

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

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

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

.btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}

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

.btn--light {
  background: #fff;
  color: var(--ink);
}

.btn--light:hover {
  background: #eef1f1;
}

.btn--wire {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.btn--wire:hover {
  border-color: #fff;
}

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

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--accent);
}

.link-arrow svg {
  transition: transform 0.18s ease;
}

.link-arrow:hover svg {
  transform: translateX(3px);
}

html[dir="rtl"] .link-arrow svg {
  transform: scaleX(-1);
}

html[dir="rtl"] .link-arrow:hover svg {
  transform: scaleX(-1) translateX(3px);
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(12px);
  border-block-end: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.06rem;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  flex: none;
}

.brand__sub {
  display: block;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1;
  margin-block-start: 3px;
}

.nav {
  margin-inline-start: auto;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav__link {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding-block: 0.4rem;
  border-block-end: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

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

.nav__link[aria-current="page"] {
  color: var(--ink);
  border-block-end-color: var(--accent);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-inline-start: auto;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  transition: border-color 0.15s ease, color 0.15s ease;
}

.lang-switch:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  padding: 0.5rem;
  cursor: pointer;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  background: var(--bg-deep);
  color: #fff;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-end: 0;
  width: 46%;
  background: radial-gradient(
    120% 100% at 100% 0%,
    rgba(232, 163, 61, 0.16) 0%,
    rgba(15, 92, 80, 0.28) 42%,
    transparent 72%
  );
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-block: clamp(3.5rem, 7vw, 6.5rem);
}

.hero__text .eyebrow {
  color: var(--amber);
}

.hero .h1 {
  margin-block-start: 1.1rem;
}

.hero__lead {
  margin-block-start: 1.25rem;
  color: rgba(255, 255, 255, 0.76);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  max-width: 52ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block-start: 2rem;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-block-start: 2.25rem;
  padding-block-start: 1.5rem;
  border-block-start: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.hero__media {
  position: relative;
}

.hero__media img {
  width: 100%;
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-l);
}

.hero__badge {
  position: absolute;
  inset-block-end: 1.25rem;
  inset-inline-start: -1rem;
  background: #fff;
  color: var(--ink);
  border-radius: var(--radius-m);
  padding: 0.85rem 1.1rem;
  box-shadow: var(--shadow-m);
  font-size: 0.8rem;
  line-height: 1.35;
}

.hero__badge strong {
  display: block;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

/* ============================================================
   Trust bar
   ============================================================ */
.trust {
  border-block-end: 1px solid var(--line);
  background: #fff;
}

.trust__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2.5rem;
  padding-block: 1.35rem;
}

.trust__label {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

html[dir="rtl"] .trust__label {
  letter-spacing: 0;
  text-transform: none;
}

.trust__items {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.25rem;
  align-items: center;
  margin-inline-start: auto;
}

.trust__item {
  font-weight: 650;
  font-size: 0.95rem;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* ============================================================
   Stats
   ============================================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.stat {
  background: #fff;
  padding: 1.5rem 1.35rem;
}

.stat__value {
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.stat__label {
  display: block;
  margin-block-start: 0.55rem;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ============================================================
   Cards / grid
   ============================================================ */
.grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.5rem);
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}


.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 1.6rem;
}

.feature__icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-block-end: 1.1rem;
}

.feature .h3 {
  margin-block-end: 0.5rem;
}

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

/* Product card */
.product-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  transition: border-color 0.18s ease, box-shadow 0.18s ease,
    transform 0.18s ease;
}

.product-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-m);
  transform: translateY(-2px);
}

.product-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--bg-alt);
  overflow: hidden;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.product-card:hover .product-card__media img {
  transform: scale(1.03);
}

.product-card__tag {
  position: absolute;
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

html[dir="rtl"] .product-card__tag {
  letter-spacing: 0;
  text-transform: none;
}

.product-card__body {
  padding: 1.25rem 1.35rem 1.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.product-card__body .h3 {
  margin: 0;
}

.product-card__body p {
  color: var(--muted);
  font-size: 0.92rem;
  flex: 1;
}

.product-card__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-block: 0.35rem 0.5rem;
}

.chip {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  font-size: 0.76rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  /* 规格值都是拉丁文+单位，强制 LTR 才不会在阿拉伯语页面里被翻转成 "lm/W 150" */
  direction: ltr;
  unicode-bidi: isolate;
}

/* ============================================================
   Product detail
   ============================================================ */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  font-size: 0.85rem;
  color: var(--muted);
  padding-block-start: 1.5rem;
}

.breadcrumb a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.breadcrumb__sep {
  opacity: 0.5;
}

.pdp {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-block: clamp(1.5rem, 3vw, 2.5rem) var(--section-y);
  align-items: start;
}

.pdp__media img {
  width: 100%;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
}

.pdp__media-thumbs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-block-start: 0.75rem;
}

.pdp__media-thumbs img {
  border-radius: var(--radius-s);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  opacity: 0.85;
}

.pdp__title {
  margin-block-start: 0.85rem;
}

.pdp__summary {
  margin-block-start: 0.9rem;
  color: var(--ink-soft);
}

.pdp__facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  margin-block: 1.75rem;
}

.pdp__fact {
  background: #fff;
  padding: 0.9rem 1.1rem;
}

.pdp__fact dt {
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

html[dir="rtl"] .pdp__fact dt {
  letter-spacing: 0;
  text-transform: none;
}

.pdp__fact dd {
  margin: 0.2rem 0 0;
  font-weight: 600;
  font-size: 0.95rem;
  /* 规格值全是拉丁数字+单位，禁止阿拉伯语页面的双向算法把它拆开重排（"200 W" 变成 "W 200"） */
  direction: ltr;
  unicode-bidi: isolate;
  text-align: start;
}

.pdp__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* Spec table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.spec-table caption {
  text-align: start;
  font-weight: 650;
  padding-block-end: 0.75rem;
}

.spec-table th,
.spec-table td {
  padding: 0.75rem 1rem;
  border-block-end: 1px solid var(--line);
  text-align: start;
  vertical-align: top;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-block-end: none;
}

.spec-table th {
  width: 42%;
  background: var(--bg-alt);
  font-weight: 550;
  color: var(--ink-soft);
}

.spec-table td {
  font-variant-numeric: tabular-nums;
  direction: ltr;
  unicode-bidi: isolate;
  text-align: start;
}

.check-list {
  display: grid;
  gap: 0.65rem;
}

.check-list li {
  display: flex;
  gap: 0.65rem;
  align-items: start;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.check-list svg {
  flex: none;
  margin-block-start: 3px;
  color: var(--accent);
}

/* ============================================================
   CTA band
   ============================================================ */
.cta-band {
  position: relative;
  background: var(--bg-deep);
  color: #fff;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    90% 120% at 85% 10%,
    rgba(232, 163, 61, 0.14),
    transparent 60%
  );
}

.cta-band__inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: clamp(2.75rem, 5vw, 4rem);
}

.cta-band .h2 {
  max-width: 22ch;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.72);
  margin-block-start: 0.75rem;
  max-width: 46ch;
}

/* ============================================================
   Forms
   ============================================================ */
.form {
  display: grid;
  gap: 1rem;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field > label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.field .req {
  color: #b4453a;
}

.input,
.select,
.textarea {
  width: 100%;
  padding: 0.72rem 0.85rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  background: #fff;
  font-size: 0.95rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.textarea {
  min-height: 130px;
  resize: vertical;
}

.hint {
  font-size: 0.8rem;
  color: var(--muted);
}

.form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-block-start: 0.5rem;
}

.form__status {
  font-size: 0.88rem;
  font-weight: 600;
}

.form__status[data-state="ok"] {
  color: var(--accent);
}

.form__status[data-state="error"] {
  color: #b4453a;
}

.hp {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ============================================================
   Page head (inner pages)
   ============================================================ */
.page-head {
  background: var(--bg-alt);
  border-block-end: 1px solid var(--line);
  padding-block: clamp(2.5rem, 5vw, 4rem) clamp(2rem, 4vw, 3rem);
}

.page-head .h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  margin-block-start: 0.9rem;
  max-width: 22ch;
}

.page-head .lead {
  margin-block-start: 1rem;
}

/* ============================================================
   Contact layout
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.contact-list {
  display: grid;
  gap: 1.35rem;
  margin-block-start: 2rem;
}

.contact-list__item {
  display: flex;
  gap: 0.9rem;
  align-items: start;
}

.contact-list__icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
}

.contact-list__label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

html[dir="rtl"] .contact-list__label {
  letter-spacing: 0;
  text-transform: none;
}

.contact-list__value {
  font-weight: 550;
  overflow-wrap: anywhere;
}

.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: var(--shadow-s);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, 0.66);
  padding-block: clamp(3rem, 5vw, 4.5rem) 2rem;
  font-size: 0.9rem;
}

.site-footer .brand {
  color: #fff;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.footer__col > h2,
.footer__col > h3 {
  color: #fff;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-block-end: 1rem;
  font-weight: 600;
}

html[dir="rtl"] .footer__col > h2,
html[dir="rtl"] .footer__col > h3 {
  letter-spacing: 0;
  text-transform: none;
}

.footer__links {
  display: grid;
  gap: 0.55rem;
}

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

.footer__about {
  margin-block-start: 1rem;
  max-width: 34ch;
  line-height: 1.7;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  margin-block-start: clamp(2.5rem, 4vw, 3.5rem);
  padding-block-start: 1.5rem;
  border-block-start: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ============================================================
   Utilities
   ============================================================ */
.sr-only {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

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

.prose h2 {
  font-size: 1.3rem;
  margin-block: 2rem 0.75rem;
}

.prose p + p {
  margin-block-start: 0.85rem;
}

.prose p {
  color: var(--ink-soft);
}

.timeline {
  display: grid;
  gap: 1.5rem;
  border-inline-start: 1px solid var(--line);
  padding-inline-start: 1.5rem;
}

.timeline__item {
  position: relative;
}

.timeline__item::before {
  content: "";
  position: absolute;
  inset-inline-start: calc(-1.5rem - 5px);
  inset-block-start: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px #fff;
}

.timeline__year {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.04em;
}


/* ============================================================
   WhatsApp floating button
   ============================================================ */
.wa-float {
  position: fixed;
  inset-block-end: clamp(1rem, 3.5vw, 1.5rem);
  inset-inline-end: clamp(1rem, 3.5vw, 1.5rem);
  z-index: 60;
  display: grid;
  place-items: center;
  inline-size: 56px;
  block-size: 56px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  box-shadow: 0 12px 28px -10px rgba(37, 211, 102, 0.75), 0 2px 10px rgba(14, 20, 24, 0.18);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.wa-float:hover,
.wa-float:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -10px rgba(37, 211, 102, 0.85), 0 2px 10px rgba(14, 20, 24, 0.22);
}

.wa-float > svg {
  inline-size: 28px;
  block-size: 28px;
}

/* 桌面端悬停提示，移动端不显示 */
@media (min-width: 761px) {
  .wa-float::after {
    content: attr(data-wa-label);
    position: absolute;
    inset-inline-end: calc(100% + 12px);
    white-space: nowrap;
    background: var(--ink);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.4rem 0.65rem;
    border-radius: 6px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease;
  }

  .wa-float:hover::after,
  .wa-float:focus-visible::after {
    opacity: 1;
  }
}

@media (max-width: 760px) {
  .wa-float {
    inline-size: 52px;
    block-size: 52px;
  }
  .wa-float > svg {
    inline-size: 26px;
    block-size: 26px;
  }
}
/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 980px) {
  .hero__inner,
  .split,
  .pdp,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero::after {
    width: 100%;
    opacity: 0.6;
  }

  .hero__media {
    order: -1;
  }

  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

  .nav-toggle {
    display: inline-flex;
  }

  .header__actions {
    margin-inline-start: auto;
  }

  .grid--3,
  .grid--4,
  .grid--2,
  .form__row,
  .pdp__facts {
    grid-template-columns: 1fr;
  }

  .site-header__inner {
    min-height: 64px;
  }

  /* mobile nav panel */
  .nav--open {
    display: block;
    position: absolute;
    inset-block-start: 100%;
    inset-inline: 0;
    background: #fff;
    border-block-end: 1px solid var(--line);
    padding: 1rem var(--pad) 1.5rem;
    box-shadow: var(--shadow-m);
  }

  .nav--open .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
  }

  .nav--open .nav__link {
    display: block;
    padding-block: 0.65rem;
    border-block-end: 1px solid var(--line);
  }

  .hero__badge {
    inset-inline-start: 0.75rem;
    inset-block-end: 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}