/* ==========================================================================
   HENG SHENG TISSUE — design system
   Paper / ink / pine. Editorial layout, hairline rules, mono spec labels.
   ========================================================================== */

:root {
  --paper: #f8f5ef;
  --paper-2: #f1ece1;
  --paper-3: #e8e1d3;
  --ink: #141a17;
  --ink-70: #4d554f;
  --ink-45: #7d857f;
  --line: rgba(20, 26, 23, 0.14);
  --line-soft: rgba(20, 26, 23, 0.08);
  --pine: #1f5a44;
  --pine-deep: #10352a;
  --pine-tint: #e4ede7;
  --clay: #a9502f;
  --wa: #25d366;

  --serif: "Instrument Serif", "Iowan Old Style", "Songti SC", "Noto Serif SC", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --gutter: clamp(20px, 5vw, 64px);
  --max: 1240px;
  --radius: 3px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 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(--sans);
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
h1, h2, h3, h4, p, figure, dl, dd, dt { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
::selection { background: var(--ink); color: var(--paper); }

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

/* ---------- type ---------- */
.display {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.02em;
}

h1.display { font-size: clamp(2.9rem, 6.2vw, 5.4rem); }
h2.display { font-size: clamp(2.2rem, 4.2vw, 3.6rem); }
h3.display { font-size: clamp(1.5rem, 2.4vw, 2rem); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.688rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-45);
  display: flex;
  align-items: center;
  gap: 0.7em;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  flex: none;
}

.eyebrow--bare::before { display: none; }

.lede {
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  line-height: 1.6;
  color: var(--ink-70);
  max-width: 56ch;
}

.mono-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-45);
}

/* ---------- layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(64px, 9vw, 128px); }
.section--tight { padding-block: clamp(44px, 6vw, 80px); }
.section--paper2 { background: var(--paper-2); }
.section--ink { background: var(--ink); color: var(--paper); }
.section--ink .lede { color: rgba(248, 245, 239, 0.66); }
.section--ink .eyebrow,
.section--ink .mono-label { color: rgba(248, 245, 239, 0.5); }

.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: clamp(32px, 4vw, 56px);
}

.section-head__text { max-width: 62ch; }
.section-head h2 { margin-top: 14px; }
.section-head .lede { margin-top: 18px; }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

/* ---------- buttons ---------- */
.btn {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.92em 1.5em;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bg);
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.35s var(--ease), background 0.25s, color 0.25s,
    border-color 0.25s;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }
.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--ink); }
.btn--light {
  --btn-bg: var(--paper);
  --btn-fg: var(--ink);
}
.btn--wa {
  --btn-bg: var(--wa);
  --btn-fg: #06281a;
  border-color: var(--wa);
}
.btn--sm { padding: 0.68em 1.1em; font-size: 0.8rem; }
.btn--block { width: 100%; }
.btn .arrow { transition: transform 0.35s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.875rem;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: border-color 0.25s;
}
.link-arrow:hover { border-color: var(--ink); }
.link-arrow svg { transition: transform 0.35s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- top bar ---------- */
.topbar {
  background: var(--ink);
  color: rgba(248, 245, 239, 0.72);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 36px;
}

.topbar__items { display: flex; gap: 26px; }
.topbar a:hover { color: var(--paper); }
.topbar__right { display: flex; align-items: center; gap: 26px; }

@media (max-width: 860px) {
  .topbar__items span:nth-child(2) { display: none; }
  .topbar__items { gap: 16px; }
  .topbar__right { gap: 16px; }
}
@media (max-width: 560px) {
  .topbar__items { display: none; }
}

/* ---------- header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(248, 245, 239, 0.86);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line-soft);
  transition: box-shadow 0.3s, border-color 0.3s;
}

.header.is-stuck {
  box-shadow: 0 10px 30px -22px rgba(20, 26, 23, 0.5);
  border-color: var(--line);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark { width: 34px; height: 34px; flex: none; color: var(--ink); }
.brand__name {
  font-family: var(--serif);
  font-size: 1.32rem;
  line-height: 1;
  letter-spacing: 0.01em;
}
.brand__sub {
  display: block;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-45);
  margin-top: 5px;
}

.nav { display: flex; align-items: center; gap: 30px; }
.nav__link {
  font-size: 0.875rem;
  position: relative;
  padding-block: 4px;
  color: var(--ink-70);
  transition: color 0.2s;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav__link:hover { color: var(--ink); }
.nav__link:hover::after,
.nav__link[aria-current="page"]::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { color: var(--ink); }

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

/* language switch */
.lang { position: relative; }
.lang__btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.5em 0.7em;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: border-color 0.2s;
}
.lang__btn:hover { border-color: var(--ink); }
.lang__btn svg { width: 10px; height: 10px; transition: transform 0.25s; }
.lang.is-open .lang__btn svg { transform: rotate(180deg); }

.lang__menu {
  position: absolute;
  top: calc(100% + 8px);
  inset-inline-end: 0;
  min-width: 172px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 24px 48px -28px rgba(20, 26, 23, 0.4);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.22s, transform 0.22s, visibility 0.22s;
  z-index: 100;
}
.lang.is-open .lang__menu { opacity: 1; visibility: visible; transform: none; }

.lang__opt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 0.6em 0.75em;
  background: none;
  border: 0;
  border-radius: 2px;
  font-size: 0.85rem;
  text-align: start;
  cursor: pointer;
}
.lang__opt span:last-child {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--ink-45);
}
.lang__opt:hover { background: var(--paper-2); }
.lang__opt[aria-selected="true"] { background: var(--pine-tint); }

/* burger */
.burger {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}
.burger span {
  display: block;
  width: 17px;
  height: 1px;
  background: var(--ink);
  position: relative;
}
.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 17px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.25s;
}
.burger span::before { top: -5px; }
.burger span::after { top: 5px; }

/* mobile drawer */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: var(--paper);
  padding: 24px var(--gutter) 40px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transform: translateY(-100%);
  transition: transform 0.45s var(--ease);
  overflow-y: auto;
}
.drawer.is-open { transform: none; }
.drawer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.drawer__close {
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  width: 42px;
  height: 42px;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}
.drawer__link {
  font-family: var(--serif);
  font-size: 1.9rem;
  padding-block: 14px;
  border-bottom: 1px solid var(--line-soft);
}
.drawer__foot { margin-top: auto; padding-top: 32px; display: grid; gap: 12px; }

@media (max-width: 980px) {
  .nav { display: none; }
  .burger { display: inline-flex; }
  .header__actions .btn { display: none; }
}
@media (max-width: 560px) {
  .brand__sub { display: none; }
}

/* ---------- hero ---------- */
.hero { position: relative; padding-top: clamp(36px, 5vw, 64px); padding-bottom: clamp(40px, 6vw, 84px); }

.hero__grid {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: clamp(28px, 4.5vw, 64px);
  align-items: end;
}

.hero h1 { margin-top: 22px; }
.hero h1 em { font-style: italic; color: var(--pine); }
.hero .lede { margin-top: 24px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.hero__notes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin-top: 38px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-70);
}
.hero__notes li { display: flex; align-items: center; gap: 8px; }
.hero__notes li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--pine);
  flex: none;
}

.hero__media { position: relative; }
.hero__media img {
  width: 100%;
  aspect-ratio: 4 / 4.6;
  object-fit: cover;
  border-radius: var(--radius);
}
.hero__badge {
  position: absolute;
  inset-inline-start: -18px;
  bottom: 26px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
  box-shadow: 0 22px 40px -30px rgba(0, 0, 0, 0.6);
  max-width: 220px;
}
.hero__badge dt {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-45);
}
.hero__badge dd { font-family: var(--serif); font-size: 1.22rem; margin-top: 4px; line-height: 1.2; }

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; align-items: start; }
  .hero__media img { aspect-ratio: 4 / 3.4; }
  .hero__badge { inset-inline-start: auto; inset-inline-end: 14px; bottom: 14px; max-width: 190px; }
}

/* ---------- marquee ---------- */
.marquee {
  border-block: 1px solid var(--line);
  overflow: hidden;
  padding-block: 16px;
  background: var(--paper);
}
.marquee__track {
  display: flex;
  gap: 48px;
  width: max-content;
  animation: marquee 34s linear infinite;
}
.marquee__track span {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-45);
  display: flex;
  align-items: center;
  gap: 48px;
  white-space: nowrap;
}
.marquee__track span::after {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--pine);
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.stats__item {
  padding: 26px 22px 24px 0;
  border-inline-end: 1px solid var(--line);
}
.stats__item:last-child { border-inline-end: 0; }
.stats__item dt {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-45);
}
.stats__item dd {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  margin-top: 10px;
  line-height: 1.1;
}
@media (max-width: 760px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .stats__item:nth-child(2) { border-inline-end: 0; }
  .stats__item:nth-child(1),
  .stats__item:nth-child(2) { border-bottom: 1px solid var(--line); }
}

/* ---------- category cards ---------- */
.cats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(14px, 1.6vw, 22px);
}
.cat {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-2);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.cat:hover { transform: translateY(-4px); box-shadow: 0 26px 40px -34px rgba(20, 26, 23, 0.55); }
.cat__img { overflow: hidden; aspect-ratio: 1 / 1; }
.cat__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.cat:hover .cat__img img { transform: scale(1.045); }
.cat__body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.cat__index { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; color: var(--ink-45); }
.cat__name { font-family: var(--serif); font-size: 1.24rem; line-height: 1.15; }
.cat__desc { font-size: 0.82rem; color: var(--ink-70); line-height: 1.5; }
.cat__foot { margin-top: auto; padding-top: 12px; display: flex; align-items: center; justify-content: space-between; }
.cat__count { font-family: var(--mono); font-size: 0.64rem; color: var(--ink-45); letter-spacing: 0.08em; }

@media (max-width: 1000px) { .cats { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .cats { grid-template-columns: 1fr; } }

/* ---------- product cards ---------- */
.grid-products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(18px, 2.4vw, 34px);
}

.pcard {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s, transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.pcard:hover {
  border-color: var(--line);
  transform: translateY(-3px);
  box-shadow: 0 30px 44px -38px rgba(20, 26, 23, 0.6);
}
.pcard__media { position: relative; overflow: hidden; aspect-ratio: 4 / 3.1; background: var(--paper-2); }
.pcard__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.pcard:hover .pcard__media img { transform: scale(1.04); }
.pcard__tag {
  position: absolute;
  top: 12px;
  inset-inline-start: 12px;
  background: rgba(248, 245, 239, 0.94);
  border-radius: 2px;
  padding: 5px 9px;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-70);
}
.pcard__body { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.pcard__brand { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--pine); }
.pcard__name { font-family: var(--serif); font-size: 1.32rem; line-height: 1.18; }
.pcard__specs { display: grid; gap: 0; margin-top: 2px; }
.pcard__specs div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-block: 7px;
  border-top: 1px solid var(--line-soft);
  font-size: 0.8rem;
}
.pcard__specs dt { color: var(--ink-45); }
.pcard__specs dd { font-family: var(--mono); font-size: 0.76rem; text-align: end; }
.pcard__foot { margin-top: auto; padding-top: 6px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }

@media (max-width: 980px) { .grid-products { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid-products { grid-template-columns: 1fr; } }

/* brand group */
.brand-group { padding-top: clamp(36px, 4vw, 56px); }
.brand-group + .brand-group { border-top: 1px solid var(--line); margin-top: clamp(36px, 4vw, 56px); }
.brand-group__head {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(18px, 4vw, 60px);
  align-items: end;
  margin-bottom: clamp(22px, 3vw, 34px);
}
.brand-group__title { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.brand-group__cn { font-family: var(--serif); font-size: 1.1rem; color: var(--ink-45); }
.brand-group__copy { font-size: 0.92rem; color: var(--ink-70); max-width: 52ch; }
@media (max-width: 760px) { .brand-group__head { grid-template-columns: 1fr; } }

/* filters */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.chip {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 0.5em 1em;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  white-space: nowrap;
}
.chip:hover { border-color: var(--ink); }
.chip.is-active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.chip__count { font-family: var(--mono); font-size: 0.62rem; opacity: 0.6; margin-inline-start: 6px; }

/* ---------- spec / feature blocks ---------- */
.feature-list { display: grid; gap: 0; margin-top: 28px; }
.feature-list__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 16px;
  padding-block: 18px;
  border-top: 1px solid var(--line);
}
.feature-list__num { font-family: var(--mono); font-size: 0.66rem; color: var(--ink-45); padding-top: 5px; }
.feature-list h3 { font-size: 1rem; font-weight: 600; letter-spacing: -0.01em; }
.feature-list p { font-size: 0.88rem; color: var(--ink-70); margin-top: 6px; }

.figure-stack { position: relative; }
.figure-stack img { width: 100%; border-radius: var(--radius); aspect-ratio: 4 / 4.4; object-fit: cover; }
.figure-stack__cap {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-45);
}

/* ---------- calculator ---------- */
.calc {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(24px, 4vw, 60px);
  align-items: start;
}
.calc__form {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(20px, 2.6vw, 30px);
  display: grid;
  gap: 16px;
}
.calc__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.calc__out { display: grid; gap: 0; }
.calc__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-block: 14px;
  border-bottom: 1px solid var(--line-soft);
}
.calc__row dt { font-size: 0.84rem; color: var(--ink-70); }
.calc__row dd { font-family: var(--mono); font-size: 0.95rem; }
.calc__row dd strong { font-family: var(--serif); font-size: 1.5rem; font-weight: 400; }
.calc__note { font-size: 0.76rem; color: var(--ink-45); line-height: 1.55; margin-top: 14px; }
@media (max-width: 860px) { .calc { grid-template-columns: 1fr; } }

/* ---------- forms ---------- */
.field { display: grid; gap: 7px; }
.field > label {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-70);
}
.field .req { color: var(--clay); }
input,
select,
textarea {
  width: 100%;
  font: inherit;
  font-size: 0.92rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0.75em 0.85em;
  transition: border-color 0.2s, background 0.2s;
  appearance: none;
}
textarea { resize: vertical; min-height: 110px; line-height: 1.55; }
input:hover, select:hover, textarea:hover { border-color: rgba(20, 26, 23, 0.3); }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--pine);
  background: #fffdf9;
}
input::placeholder, textarea::placeholder { color: #a3a9a4; }
select {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23141a17' stroke-width='1.4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-inline-end: 34px;
}
[dir="rtl"] select { background-position: left 12px center; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .col-2 { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

.form-note { font-size: 0.76rem; color: var(--ink-45); line-height: 1.55; }

/* ---------- accordion ---------- */
.acc { border-top: 1px solid var(--line); }
.acc__item { border-bottom: 1px solid var(--line); }
.acc__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: none;
  border: 0;
  padding: 22px 0;
  text-align: start;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
}
.acc__icon { position: relative; width: 14px; height: 14px; flex: none; }
.acc__icon::before,
.acc__icon::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 6px;
  width: 14px;
  height: 1px;
  background: var(--ink);
  transition: transform 0.3s var(--ease);
}
.acc__icon::after { transform: rotate(90deg); }
.acc__btn[aria-expanded="true"] .acc__icon::after { transform: rotate(0deg); }
.acc__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s var(--ease);
}
.acc__panel > div { overflow: hidden; }
.acc__panel p { padding-bottom: 22px; font-size: 0.9rem; color: var(--ink-70); max-width: 68ch; }
.acc__btn[aria-expanded="true"] + .acc__panel { grid-template-rows: 1fr; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; }
.cta-band__inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(24px, 4vw, 60px);
  align-items: end;
}
.cta-band h2 { margin-top: 16px; }
.cta-band h2 em { font-style: italic; color: #a8cdb9; }
.cta-band__actions { display: flex; flex-direction: column; gap: 14px; align-items: flex-start; }
.cta-band .note { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(248, 245, 239, 0.45); }
@media (max-width: 800px) { .cta-band__inner { grid-template-columns: 1fr; } }

/* ---------- footer ---------- */
.footer { background: var(--ink); color: rgba(248, 245, 239, 0.7); padding-top: clamp(48px, 6vw, 80px); }
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 0.7fr 1fr;
  gap: clamp(24px, 3vw, 48px);
  padding-bottom: 48px;
}
.footer .brand__name { color: var(--paper); }
.footer .brand__sub { color: rgba(248, 245, 239, 0.42); }
.footer__blurb { font-size: 0.86rem; line-height: 1.65; margin-top: 18px; max-width: 34ch; }
.footer h4 {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(248, 245, 239, 0.42);
  margin-bottom: 16px;
  font-weight: 400;
}
.footer__list { display: grid; gap: 10px; font-size: 0.86rem; }
.footer__list a:hover { color: var(--paper); }
.footer__bottom {
  border-top: 1px solid rgba(248, 245, 239, 0.12);
  padding-block: 22px 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(248, 245, 239, 0.4);
}
@media (max-width: 900px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer__grid { grid-template-columns: 1fr; } }

/* ---------- floating whatsapp ---------- */
.fab {
  position: fixed;
  inset-inline-end: 20px;
  bottom: 20px;
  z-index: 80;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--wa);
  color: #06281a;
  display: grid;
  place-items: center;
  box-shadow: 0 16px 30px -14px rgba(37, 211, 102, 0.8);
  transition: transform 0.3s var(--ease);
}
.fab:hover { transform: scale(1.06); }
.fab svg { width: 26px; height: 26px; }

/* ---------- page hero ---------- */
.page-hero { padding-top: clamp(40px, 5vw, 70px); padding-bottom: clamp(28px, 3vw, 44px); }
.page-hero h1 { margin-top: 20px; max-width: 20ch; }
.page-hero .lede { margin-top: 22px; }
.page-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-45);
}

/* ---------- notices ---------- */
.notice {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-inline-start: 2px solid var(--pine);
  border-radius: 2px;
  background: var(--pine-tint);
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--ink-70);
}
.notice strong { color: var(--ink); font-weight: 600; }

/* ---------- contact page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}
.contact-info { display: grid; gap: 0; border-top: 1px solid var(--line); }
.ci { padding-block: 20px; border-bottom: 1px solid var(--line); }
.ci dt {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-45);
}
.ci dd { margin-top: 7px; font-size: 1rem; }
.ci dd a { border-bottom: 1px solid var(--line); }
.ci dd a:hover { border-color: var(--ink); }
.ci dd small { display: block; font-size: 0.8rem; color: var(--ink-45); margin-top: 4px; }

.form-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(22px, 3vw, 36px);
}
.form-card__head { margin-bottom: 24px; }
.form-card__head h2 { margin-top: 12px; }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.form-actions .btn { flex: 1 1 200px; }

.wa-preview {
  margin-top: 20px;
  border: 1px dashed var(--line);
  border-radius: 2px;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--ink-70);
  white-space: pre-wrap;
  background: rgba(241, 236, 225, 0.5);
  display: none;
}
.wa-preview.is-visible { display: block; }

@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- steps ---------- */
.steps { display: grid; gap: 0; border-top: 1px solid var(--line); }
.steps__item {
  display: grid;
  grid-template-columns: 60px 0.9fr 1.1fr;
  gap: clamp(14px, 3vw, 40px);
  padding-block: clamp(20px, 2.6vw, 30px);
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.steps__num { font-family: var(--mono); font-size: 0.7rem; color: var(--ink-45); padding-top: 6px; }
.steps__item h3 { font-family: var(--serif); font-size: clamp(1.2rem, 1.9vw, 1.5rem); line-height: 1.2; }
.steps__item p { font-size: 0.9rem; color: var(--ink-70); }
@media (max-width: 760px) {
  .steps__item { grid-template-columns: 40px 1fr; }
  .steps__item p { grid-column: 2; }
}

/* ---------- brand cards (about) ---------- */
.brands-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.brand-cell { background: var(--paper); padding: clamp(20px, 2.6vw, 32px); }
.brand-cell__name { font-family: var(--serif); font-size: 1.5rem; }
.brand-cell__cn { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.12em; color: var(--ink-45); margin-top: 6px; }
.brand-cell p { font-size: 0.86rem; color: var(--ink-70); margin-top: 12px; }
@media (max-width: 700px) { .brands-grid { grid-template-columns: 1fr; } }

/* ---------- reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
[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; }
}

/* ---------- RTL ---------- */
[dir="rtl"] .eyebrow { letter-spacing: 0.06em; }
[dir="rtl"] .marquee__track { animation-direction: reverse; }
[dir="rtl"] .arrow { transform: scaleX(-1); }
[dir="rtl"] .btn:hover .arrow,
[dir="rtl"] .link-arrow:hover svg { transform: translateX(-4px) scaleX(-1); }
[dir="rtl"] .hero__badge { text-align: start; }
[dir="rtl"] body { letter-spacing: 0; }

/* phone numbers, emails and codes must stay LTR inside RTL text */
a[href^="https://wa.me"],
a[href^="mailto:"],
a[href^="tel:"],
.contact-info dd a,
[dir="rtl"] .topbar__right a {
  direction: ltr;
  unicode-bidi: isolate;
}

/* utilities */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.mt-0 { margin-top: 0; }
.mt-2 { margin-top: 10px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 20px; }
.mt-6 { margin-top: 30px; }
.mt-8 { margin-top: 40px; }
.h3-like { font-size: clamp(1.45rem, 2.4vw, 2rem); line-height: 1.15; }
.pcard__specs dd .u { font-size: 0.68em; color: var(--ink-45); letter-spacing: 0; }
.form-card .form-actions .btn svg { flex: none; }
#formError { color: var(--clay); }