/* ===========================================================
   TKU GROUP — Brand Collective Site
   Visual system: warm paper, ink black, brick accent
   =========================================================== */

:root {
  --bg: #f4f2ed;
  --panel: #ffffff;
  --panel-2: #eeece6;
  --line: #ded9d1;
  --line-2: #c4bfb5;

  --ink: #14140f;
  --ink-2: #55534b;
  --ink-3: #8b877c;

  --accent: #b03a29;
  --accent-dim: #8a2c1f;
  --accent-lite: #ec6a4d;
  --paper: #f2f0eb;
  --paper-ink: #14140f;
  --dark: #14140f;

  --maxw: 1360px;
  --gutter: 44px;
  --header-h: 74px;

  --font: "Helvetica Neue", Helvetica, Inter, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", Arial, sans-serif;
  --font-display: "Arial Black", "Helvetica Neue", Helvetica, "PingFang SC",
    "Microsoft YaHei", sans-serif;

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

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
ul { list-style: none; }
::selection { background: var(--accent); color: #fff; }

/* ---------- Dark surfaces (photos, accent band, footer) ---------- */
.hero, .brand-hero, .brand-card, .cta-band, .ticker, .site-footer {
  color: var(--ink);
  --ink: #f6f5f1;
  --ink-2: rgba(246, 245, 241, 0.76);
  --ink-3: rgba(246, 245, 241, 0.54);
  --line: rgba(255, 255, 255, 0.16);
  --line-2: rgba(255, 255, 255, 0.3);
}
.site-footer { --accent: var(--accent-lite); }

/* 品牌标识为黑色透明 PNG，深色表面上反白 */
.hero__label-mark img,
.brand-card__logo,
.brand-hero__logo,
.footer-brand__marks img { filter: invert(1); }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 2;
}
.section { padding: 130px 0; }
.section--tight { padding: 84px 0; }
.section--panel { background: var(--panel); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- Typography ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 22px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--accent);
  display: inline-block;
}

.h1, .h2, .h3 { font-family: var(--font-display); font-weight: 900; line-height: 0.94; letter-spacing: -0.03em; text-transform: uppercase; }
.h1 { font-size: clamp(44px, 6.4vw, 104px); }
.h2 { font-size: clamp(34px, 4.4vw, 66px); }
.h3 { font-size: clamp(20px, 2vw, 26px); line-height: 1.1; letter-spacing: -0.01em; }

.cn-sub { font-family: var(--font); font-weight: 600; letter-spacing: 0.02em; }

.lead {
  font-size: 16.5px;
  color: var(--ink-2);
  line-height: 1.9;
  max-width: 62ch;
}
.muted { color: var(--ink-3); }

.section-head { margin-bottom: 64px; display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: end; }
.section-head .h2 { margin-bottom: 16px; }
.section-head .lead { margin-top: 4px; }
.section-head__aside { justify-self: end; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 50px;
  padding: 0 30px;
  border-radius: 0;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn--primary:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: var(--accent); }
.btn--outline { border-color: var(--line-2); color: var(--ink); }
.btn--outline:hover { border-color: var(--accent); color: var(--accent); }
.btn--ghost { border-color: transparent; color: var(--ink-2); padding: 0 4px; height: auto; }
.btn--ghost:hover { color: var(--accent); }
.btn--block { width: 100%; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  transition: gap 0.3s var(--ease), color 0.3s var(--ease);
}
.link-arrow:hover { gap: 16px; color: var(--accent); }

/* ---------- Top ticker ---------- */
.ticker {
  position: relative;
  z-index: 60;
  height: 32px;
  background: var(--accent);
  color: #fff;
  overflow: hidden;
  display: flex;
  align-items: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.ticker__track {
  display: flex;
  gap: 46px;
  white-space: nowrap;
  animation: ticker 34s linear infinite;
  padding-left: 46px;
}
.ticker__track span { display: inline-flex; align-items: center; gap: 46px; }
.ticker__track span::after { content: "✦"; }
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(244, 242, 237, 0.88);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--line);
  transition: background 0.4s var(--ease), height 0.4s var(--ease);
}
.site-header.is-stuck { height: 62px; background: rgba(244, 242, 237, 0.97); }

.header-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 24px;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.logo em {
  font-style: normal;
  font-family: var(--font);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--accent);
  border: 1px solid var(--line-2);
  padding: 3px 6px;
  transform: translateY(-1px);
}

.nav { display: flex; align-items: center; gap: 32px; }
.nav a {
  position: relative;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding: 8px 0;
  transition: color 0.3s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width 0.32s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after, .nav a.is-active::after { width: 100%; }
.nav a.is-active { color: var(--accent); }

.header-actions { display: flex; align-items: center; gap: 14px; }
.header-actions .btn { height: 40px; padding: 0 20px; font-size: 11px; }

.burger {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line-2);
  background: transparent;
  cursor: pointer;
  position: relative;
}
.burger i {
  position: absolute; left: 11px;
  width: 18px; height: 1.5px;
  background: var(--ink);
  transition: all 0.32s var(--ease);
}
.burger i:nth-child(1) { top: 15px; }
.burger i:nth-child(2) { top: 20px; }
.burger i:nth-child(3) { top: 25px; }
.burger.is-open i:nth-child(1) { top: 20px; transform: rotate(45deg); }
.burger.is-open i:nth-child(2) { opacity: 0; }
.burger.is-open i:nth-child(3) { top: 20px; transform: rotate(-45deg); }

/* ---------- Home hero ---------- */
.hero {
  position: relative;
  min-height: calc(100vh - 106px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: stretch;
  overflow: hidden;
  background: #060606;
}
.hero__media { position: absolute; inset: 0; }
.hero__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.85;
  animation: heroZoom 18s var(--ease) forwards;
}
@keyframes heroZoom { from { transform: scale(1.08); } to { transform: scale(1); } }
.hero__media::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(6,6,6,0.72) 0%, rgba(6,6,6,0.25) 40%, rgba(6,6,6,0.95) 100%),
    linear-gradient(90deg, rgba(6,6,6,0.9) 0%, rgba(6,6,6,0.2) 60%);
}
.hero__inner {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 120px var(--gutter) 56px;
}
.hero__meta-top {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 34px;
}
.chip {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: 1px solid var(--line-2);
  color: var(--ink-2);
  padding: 6px 11px;
}
.chip--accent { background: var(--accent); color: #fff; border-color: var(--accent); }

.hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(52px, 9.4vw, 150px);
  line-height: 0.84;
  letter-spacing: -0.045em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero__title .outline {
  -webkit-text-stroke: 1.5px var(--ink);
  color: transparent;
}
.hero__title .accent { color: var(--accent-lite); }

.hero__desc {
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-2);
  max-width: 52ch;
  margin-bottom: 36px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero__labels {
  position: relative;
  z-index: 3;
  border-top: 1px solid rgba(255,255,255,0.12);
  background: rgba(8,8,8,0.6);
  backdrop-filter: blur(8px);
}
.hero__labels-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px var(--gutter);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  align-items: center;
}
.hero__label-mark {
  display: flex;
  align-items: center;
  gap: 14px;
  opacity: 0.55;
  transition: opacity 0.3s var(--ease);
}
.hero__label-mark:hover { opacity: 1; }
.hero__label-mark img { height: 22px; width: auto; max-width: 100px; object-fit: contain; }
.hero__label-mark span { font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-3); }

/* ---------- Page hero ---------- */
.page-hero {
  position: relative;
  padding: 128px 0 84px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: var(--panel);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: -70% -15%;
  background: radial-gradient(42% 52% at 72% 42%, rgba(176,58,41,0.11), transparent 72%);
  pointer-events: none;
}
.page-hero__inner { position: relative; z-index: 2; }
.page-hero .h1 { margin-bottom: 22px; }
.page-hero p { color: var(--ink-2); max-width: 60ch; font-size: 16.5px; }
.crumb {
  display: flex; gap: 10px;
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 30px;
}
.crumb a:hover { color: var(--accent); }
.crumb span:nth-child(2) { color: var(--line-2); }

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stats__item { padding: 44px 30px 40px; border-right: 1px solid var(--line); }
.stats__item:last-child { border-right: 0; }
.stats__value {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 4.6vw, 64px);
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 14px;
}
.stats__value sup { font-size: 0.34em; vertical-align: super; margin-left: 4px; color: var(--accent); }
.stats__label { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-3); }

/* ---------- Brand cards ---------- */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background: var(--line);
  border: 1px solid var(--line);
}
.brand-card {
  position: relative;
  display: block;
  background: var(--panel);
  overflow: hidden;
  min-height: 420px;
  transition: background 0.4s var(--ease);
}
.brand-card--wide { grid-column: span 2; min-height: 480px; }
.brand-card__media { position: absolute; inset: 0; }
.brand-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.55;
  transition: transform 1s var(--ease), opacity 0.5s var(--ease);
}
.brand-card:hover .brand-card__media img { transform: scale(1.05); opacity: 0.72; }
.brand-card__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,10,11,0.35) 0%, rgba(10,10,11,0.5) 45%, rgba(10,10,11,0.95) 100%);
}
.brand-card__body {
  position: relative;
  z-index: 2;
  padding: 38px 40px 40px;
  height: 100%;
  min-height: inherit;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.brand-card__top { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; }
.brand-card__role {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-2);
  border: 1px solid rgba(255,255,255,0.22);
  padding: 5px 9px;
}
.brand-card__index {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--accent-lite);
  letter-spacing: 0.04em;
}
.brand-card__logo { height: 34px; width: auto; max-width: 230px; object-fit: contain; margin-bottom: 20px; }
.brand-card--wide .brand-card__logo { height: 52px; max-width: 320px; }
.brand-card__tagline {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent-lite);
  margin-bottom: 12px;
}
.brand-card__intro { font-size: 14.5px; color: var(--ink-2); line-height: 1.8; max-width: 50ch; }
.brand-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.14);
}
.brand-card__tags { display: flex; flex-wrap: wrap; gap: 7px; }
.brand-card__tags span {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--ink-2);
  border: 1px solid var(--line-2);
  padding: 3px 8px;
}
.brand-card__go {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.brand-card:hover .brand-card__go { color: var(--accent); }

/* ---------- Brand editorial rows (brands page) ---------- */
.brand-row {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
  margin-bottom: 2px;
  background: var(--panel);
}
.brand-row:nth-child(even) .brand-row__media { order: 2; }
.brand-row__media { position: relative; min-height: 420px; overflow: hidden; }
.brand-row__media img { width: 100%; height: 100%; object-fit: cover; opacity: 0.9; }
.brand-row__body { padding: 54px 52px; display: flex; flex-direction: column; justify-content: center; }
.brand-row__logo { height: 40px; width: auto; max-width: 260px; object-fit: contain; margin-bottom: 26px; }
.brand-row__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 2.6vw, 38px);
  line-height: 0.96;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.brand-row__cn { font-size: 13px; letter-spacing: 0.22em; color: var(--accent); text-transform: uppercase; margin-bottom: 22px; }
.brand-row__text { font-size: 15px; color: var(--ink-2); line-height: 1.9; margin-bottom: 26px; }
.brand-row__meta { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 26px; margin-bottom: 30px; }
.brand-row__meta div { border-top: 1px solid var(--line); padding-top: 12px; }
.brand-row__meta dt { font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 5px; }
.brand-row__meta dd { font-size: 14px; font-weight: 600; }

/* brand compare table */
.compare { width: 100%; border-collapse: collapse; font-size: 14px; }
.compare th, .compare td { text-align: left; padding: 18px 20px; border-bottom: 1px solid var(--line); }
.compare th {
  font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 700; border-bottom-color: var(--line-2);
}
.compare td:first-child { font-weight: 700; white-space: nowrap; }
.compare tr:hover td { background: rgba(176,58,41,0.04); }

/* ---------- Single brand hero ---------- */
.brand-hero {
  position: relative;
  min-height: 76vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: #060606;
}
.brand-hero__media { position: absolute; inset: 0; }
.brand-hero__media img { width: 100%; height: 100%; object-fit: cover; opacity: 0.8; }
.brand-hero__media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(6,6,6,0.55) 0%, rgba(6,6,6,0.2) 35%, rgba(6,6,6,0.96) 100%);
}
.brand-hero__inner {
  position: relative; z-index: 2;
  width: 100%; max-width: var(--maxw);
  margin: 0 auto;
  padding: 120px var(--gutter) 62px;
}
.brand-hero__logo { height: clamp(40px, 6vw, 74px); width: auto; max-width: 78%; object-fit: contain; margin-bottom: 26px; }
.brand-hero__tagline {
  font-size: 12px; font-weight: 700; letter-spacing: 0.26em; text-transform: uppercase;
  color: var(--accent-lite); margin-bottom: 18px;
}
.brand-hero__desc { font-size: 17px; color: var(--ink-2); max-width: 58ch; line-height: 1.85; }
.brand-hero__bar {
  border-top: 1px solid rgba(255,255,255,0.14);
  margin-top: 40px;
  padding-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- Split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: start; }

/* ---------- Strengths ---------- */
.strengths { display: grid; grid-template-columns: repeat(4, 1fr); column-gap: 60px; border-top: 1px solid var(--line); }
.strength { position: relative; padding: 44px 0 46px; }
.strength + .strength::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: -30px;
  width: 1px; background: var(--line);
}
.strength__num {
  font-family: var(--font-display);
  font-size: 12px; letter-spacing: 0.14em; color: var(--accent); margin-bottom: 24px;
}
.strength__title { font-size: 17px; font-weight: 700; margin-bottom: 12px; letter-spacing: 0.01em; }
.strength__desc { font-size: 14px; color: var(--ink-2); line-height: 1.85; }

/* ---------- Process ---------- */
.process { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.step { border-top: 2px solid var(--line-2); padding-top: 26px; position: relative; transition: border-color 0.4s var(--ease); }
.step:hover { border-top-color: var(--accent); }
.step__no {
  font-family: var(--font-display); font-weight: 900;
  font-size: 30px; line-height: 1; letter-spacing: -0.03em;
  color: var(--line-2); margin-bottom: 16px;
}
.step:hover .step__no { color: var(--accent); }
.step__title { font-size: 16px; font-weight: 700; margin-bottom: 10px; }
.step__desc { font-size: 13.5px; color: var(--ink-2); line-height: 1.8; }

/* ---------- Timeline ---------- */
.timeline { border-top: 1px solid var(--line); }
.tl-item {
  display: grid; grid-template-columns: 150px 1fr; gap: 40px;
  padding: 34px 0; border-bottom: 1px solid var(--line);
  transition: padding-left 0.4s var(--ease), background 0.4s var(--ease);
}
.tl-item:hover { background: rgba(176,58,41,0.03); padding-left: 14px; }
.tl-item__year {
  font-family: var(--font-display); font-weight: 900;
  font-size: 30px; letter-spacing: -0.03em; color: var(--accent); line-height: 1;
}
.tl-item__title { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.tl-item__desc { font-size: 14.5px; color: var(--ink-2); max-width: 70ch; line-height: 1.8; }

/* ---------- Values ---------- */
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--line); border: 1px solid var(--line); }
.value { background: var(--panel); padding: 46px 38px; transition: background 0.4s var(--ease); }
.value:hover { background: var(--panel-2); }
.value__mark { width: 34px; height: 3px; background: var(--accent); margin-bottom: 28px; }
.value__title { font-size: 19px; font-weight: 700; margin-bottom: 12px; line-height: 1.4; }
.value__desc { font-size: 14.5px; color: var(--ink-2); line-height: 1.85; }

/* ---------- Products ---------- */
.filters {
  display: flex; flex-wrap: wrap; gap: 26px;
  margin-bottom: 44px; padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.filters__group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.filters__label {
  font-size: 10px; font-weight: 700; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-3); margin-right: 6px;
}
.filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--line-2);
  background: transparent;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  cursor: pointer;
  transition: all 0.28s var(--ease);
}
.filter-btn:hover { border-color: var(--ink-2); color: var(--ink); }
.filter-btn.is-active { background: var(--accent); border-color: var(--accent); color: #fff; }

.grid-products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--line); border: 1px solid var(--line); }
.product {
  background: var(--panel);
  display: flex;
  flex-direction: column;
  transition: background 0.4s var(--ease);
}
.product:hover { background: var(--panel-2); }
.product__media { position: relative; aspect-ratio: 1 / 1; overflow: hidden; background: var(--paper); }
.product__media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.9s var(--ease);
}
.product:hover .product__media img { transform: scale(1.05); }
.product__brand {
  position: absolute; left: 14px; top: 14px;
  font-size: 9.5px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  background: rgba(10,10,11,0.86); color: #fff;
  padding: 5px 9px;
  backdrop-filter: blur(4px);
}
.product__body { padding: 24px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.product__code { font-size: 10px; letter-spacing: 0.18em; color: var(--ink-3); text-transform: uppercase; }
.product__name { font-size: 17px; font-weight: 700; margin: 9px 0 5px; letter-spacing: 0.01em; }
.product__series { font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; }
.product__desc { font-size: 13.5px; color: var(--ink-2); line-height: 1.8; margin-bottom: 18px; }
.product__specs {
  margin-top: auto; border-top: 1px solid var(--line);
  padding-top: 14px; display: grid; gap: 7px;
}
.product__spec { display: flex; justify-content: space-between; gap: 14px; font-size: 12.5px; }
.product__spec dt { color: var(--ink-3); }
.product__spec dd { font-weight: 600; text-align: right; }

.empty-state {
  grid-column: 1 / -1;
  background: var(--panel);
  padding: 70px 30px;
  text-align: center;
  color: var(--ink-3);
  font-size: 14px;
}

/* ---------- Services ---------- */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--line); border: 1px solid var(--line); }
.service { background: var(--panel); padding: 40px 36px 44px; }
.service__title {
  font-family: var(--font-display); font-weight: 900;
  font-size: 20px; letter-spacing: -0.01em; text-transform: uppercase;
  margin-bottom: 24px; padding-bottom: 18px; border-bottom: 1px solid var(--line);
}
.service__list { display: grid; gap: 13px; }
.service__list li { position: relative; padding-left: 20px; font-size: 14px; color: var(--ink-2); }
.service__list li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 9px; height: 2px; background: var(--accent);
}

/* ---------- Capability ---------- */
.caps { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }
.cap { padding: 42px 32px; border-right: 1px solid var(--line); }
.cap:last-child { border-right: 0; }
.cap__value { font-family: var(--font-display); font-weight: 900; font-size: 32px; letter-spacing: -0.03em; margin-bottom: 8px; color: var(--accent); }
.cap__label { font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-3); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 2px; background: var(--line); border: 1px solid var(--line); }
.contact-col { background: var(--panel); padding: 48px 46px; }
.info-list { display: grid; gap: 0; }
.info-item { display: grid; grid-template-columns: 92px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.info-item:first-child { border-top: 1px solid var(--line); }
.info-item dt { font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); padding-top: 4px; }
.info-item dd { font-size: 14.5px; font-weight: 500; }
.info-item dd a:hover { color: var(--accent); }
.info-item .sub { display: block; font-size: 12.5px; font-weight: 400; color: var(--ink-3); margin-top: 5px; line-height: 1.6; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 8px; color: var(--ink-3); }
.field label .req { color: var(--accent); }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px;
  border: 1px solid var(--line-2);
  background: #fff;
  border-radius: 0;
  font-size: 14.5px;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: #a9a49a; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); background: #fff;
}
.field textarea { resize: vertical; min-height: 120px; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: #ff5a3c; }
.field-error { display: block; font-size: 11.5px; color: #c02d18; margin-top: 6px; letter-spacing: 0.03em; }
.form-note { font-size: 12px; color: var(--ink-3); margin-top: 16px; line-height: 1.7; }
.form-status { display: none; margin-top: 18px; padding: 16px 18px; font-size: 13.5px; line-height: 1.7; }
.form-status.is-ok { display: block; background: rgba(176,58,41,0.08); border-left: 3px solid var(--accent); }
.form-status.is-err { display: block; background: rgba(255,90,60,0.08); border-left: 3px solid #ff5a3c; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 24px 0; background: transparent; border: 0; cursor: pointer; text-align: left;
  font-size: 16px; font-weight: 600; color: var(--ink);
}
.faq-q i { position: relative; flex: none; width: 14px; height: 14px; }
.faq-q i::before, .faq-q i::after { content: ""; position: absolute; background: var(--ink-2); transition: transform 0.3s var(--ease); }
.faq-q i::before { left: 0; top: 6.5px; width: 14px; height: 1.5px; }
.faq-q i::after { left: 6.5px; top: 0; width: 1.5px; height: 14px; }
.faq-item.is-open .faq-q i::after { transform: rotate(90deg); opacity: 0; }
.faq-item.is-open .faq-q { color: var(--accent); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.42s var(--ease); }
.faq-a p { padding: 0 0 26px; color: var(--ink-2); font-size: 14.5px; max-width: 80ch; line-height: 1.85; }

/* ---------- Map ---------- */
.map-block { display: grid; grid-template-columns: 1fr 1.15fr; gap: 44px; align-items: center; border: 1px solid var(--line); background: var(--panel); padding: 36px; }
.map-visual { position: relative; aspect-ratio: 4 / 3; background: #fbfaf7; border: 1px solid var(--line); overflow: hidden; }
.map-visual::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(176,58,41,0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(176,58,41,0.13) 1px, transparent 1px);
  background-size: 32px 32px;
}
.map-visual::after {
  content: ""; position: absolute; left: 46%; top: 44%;
  width: 12px; height: 12px; background: var(--accent); border-radius: 50%;
  box-shadow: 0 0 0 8px rgba(176,58,41,0.16), 0 0 0 18px rgba(176,58,41,0.06);
  animation: pulse 2.6s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 5px rgba(176,58,41,0.22), 0 0 0 12px rgba(176,58,41,0.08); }
  70% { box-shadow: 0 0 0 12px rgba(176,58,41,0.05), 0 0 0 22px rgba(176,58,41,0.02); }
  100% { box-shadow: 0 0 0 5px rgba(176,58,41,0.22), 0 0 0 12px rgba(176,58,41,0.08); }
}
.map-visual span {
  position: absolute; left: calc(46% + 22px); top: calc(44% - 6px); z-index: 2;
  font-size: 10px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  background: var(--accent); color: #fff; padding: 4px 8px;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--accent);
  color: #fff;
  padding: 96px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "TKU";
  position: absolute;
  right: -3%; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 340px;
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: rgba(255,255,255,0.13);
  pointer-events: none;
}
.cta-band__inner { position: relative; z-index: 2; max-width: 900px; }
.cta-band h2 {
  font-family: var(--font-display); font-weight: 900;
  font-size: clamp(32px, 4.6vw, 68px); line-height: 0.94; letter-spacing: -0.035em;
  text-transform: uppercase; margin-bottom: 20px;
}
.cta-band p { color: rgba(255,255,255,0.84); max-width: 52ch; margin-bottom: 34px; font-size: 16px; }
.cta-band .btn--primary { background: #0a0a0b; color: #fff; border-color: #0a0a0b; }
.cta-band .btn--primary:hover { background: #fff; color: var(--accent); border-color: #fff; }

/* ---------- Footer ---------- */
.site-footer { background: var(--dark); padding: 80px 0 34px; border-top: 1px solid var(--line); }
.footer-top {
  display: grid; grid-template-columns: 1.7fr 1fr 1fr 1fr;
  gap: 50px; padding-bottom: 52px; border-bottom: 1px solid var(--line);
}
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p { font-size: 14px; color: var(--ink-2); max-width: 38ch; line-height: 1.85; }
.footer-brand__marks { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 26px; align-items: center; }
.footer-brand__marks img { height: 16px; width: auto; opacity: 0.45; transition: opacity 0.3s var(--ease); }
.footer-brand__marks img:hover { opacity: 1; }
.footer-col h4 {
  font-size: 10px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 20px; font-weight: 700;
}
.footer-col li { margin-bottom: 11px; font-size: 13.5px; color: var(--ink-2); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  padding-top: 26px; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-size: 11.5px; letter-spacing: 0.06em; color: var(--ink-3);
}

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.75s var(--ease), transform 0.75s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  :root { --gutter: 30px; }
  .section { padding: 100px 0; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .grid-products, .services, .values { grid-template-columns: repeat(2, 1fr); }
  .strengths { grid-template-columns: repeat(2, 1fr); column-gap: 44px; }
  .strength { padding: 34px 0; }
  .strength + .strength::before { left: -22px; }
  .strength:nth-child(2n + 1)::before { display: none; }
  .strength:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .process { grid-template-columns: repeat(3, 1fr); gap: 26px 20px; }
  .caps { grid-template-columns: repeat(2, 1fr); }
  .cap:nth-child(2n) { border-right: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .brand-row { grid-template-columns: 1fr; }
  .brand-row:nth-child(even) .brand-row__media { order: 0; }
  .brand-row__media { min-height: 320px; }
  .section-head { grid-template-columns: 1fr; }
  .section-head__aside { justify-self: start; }
}

@media (max-width: 900px) {
  .nav {
    position: fixed; top: 62px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--panel); border-top: 1px solid var(--line);
    padding: 0 var(--gutter);
    max-height: 0; overflow: hidden;
    transition: max-height 0.42s var(--ease);
  }
  .nav.is-open { max-height: 420px; }
  .nav a { padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
  .burger { display: block; }
  .header-actions .btn { display: none; }
  .hero__labels-inner { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .brand-grid { grid-template-columns: 1fr; }
  .brand-card--wide { grid-column: span 1; }
  .brand-card { min-height: 380px; }
  .brand-card--wide { min-height: 400px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stats__item:nth-child(2n) { border-right: 0; }
  .stats__item { border-bottom: 1px solid var(--line); }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .form-card, .contact-col { padding: 34px 26px; }
  .map-block { grid-template-columns: 1fr; gap: 28px; }
  .compare th, .compare td { padding: 14px 12px; font-size: 13px; }
}

@media (max-width: 640px) {
  :root { --gutter: 20px; --header-h: 64px; }
  .section { padding: 76px 0; }
  .grid-products, .services, .values, .strengths, .process, .caps { grid-template-columns: 1fr; }
  .grid-products, .services, .values { background: var(--line); }
  .strength { border-right: 0; border-bottom: 1px solid var(--line); padding: 30px 0; }
  .strength + .strength::before { display: none; }
  .cap { border-right: 0; border-bottom: 1px solid var(--line); }
  .form-row { grid-template-columns: 1fr; }
  .brand-row__body { padding: 34px 24px; }
  .brand-row__meta { grid-template-columns: 1fr; }
  .tl-item { grid-template-columns: 1fr; gap: 8px; }
  .info-item { grid-template-columns: 1fr; gap: 4px; }
  .hero__meta-top { gap: 8px; }
  .hero__title { letter-spacing: -0.03em; }
  .cta-band::before { font-size: 180px; }
  .footer-top { grid-template-columns: 1fr; }
  .filters { gap: 16px; }
  .filters__group { width: 100%; }
  .compare { font-size: 12px; }
  .compare th, .compare td { padding: 11px 8px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}