/* ==========================================================================
   EP TRIM — eptrim.com
   中英双语静态站样式表
   配色沿用壹品品牌规范：墨黑 / 暖白 / 深棕 / 驼棕（驼棕仅用于装饰，文字与按钮用可读品牌色）
   ========================================================================== */

/* ---------------------------------------------------------------- 1. Tokens */
:root {
  --ink: #14110f;
  --ink-soft: #241d18;
  --ink-2: #3a2a20;
  --paper: #faf8f5;
  --paper-2: #f2ede6;
  --paper-3: #e9e2d9;

  --brand: #8a5a3b;          /* 可读品牌色：正文/按钮/链接，暖白底 5.83:1 */
  --brand-strong: #734a30;   /* hover / active */
  --camel: #a9714b;          /* 仅装饰：细线、图标、边框 */
  --sand: #c9a57b;           /* 仅深底使用 */

  --muted: #6b645e;          /* 暖白/浅米底均达 4.5:1 以上 */
  --muted-dark: #a9a09a;     /* 深底次要文字 */
  --line: rgba(20, 17, 15, 0.12);
  --line-strong: rgba(20, 17, 15, 0.22);
  --line-dark: rgba(250, 248, 245, 0.16);

  --wrap: 1200px;
  --wrap-narrow: 820px;
  --gap: 32px;
  --sec-y: 120px;
  --sec-y-sm: 72px;
  --radius: 3px;

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

/* ---------------------------------------------------------------- 2. Reset */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-strong); }
button { font: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.25; color: var(--ink); }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}
:focus:not(:focus-visible) { outline: none; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--ink); color: #fff; padding: 12px 20px; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* ---------------------------------------------------------------- 3. Layout */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.wrap--narrow { max-width: var(--wrap-narrow); }
.section { padding: var(--sec-y) 0; }
.section--tight { padding: 72px 0; }
.section--paper { background: var(--paper-2); }
.section--dark { background: var(--ink); color: #ece7e1; }
.section--dark h1, .section--dark h2, .section--dark h3 { color: #fff; }

.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------------------------------------------------------------- 4. Type */
.eyebrow {
  display: inline-block;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 18px;
}
.section--dark .eyebrow { color: var(--sand); }
.page-head .eyebrow { color: var(--sand); }
.eyebrow::after {
  content: ""; display: block; width: 28px; height: 2px;
  background: var(--camel); margin-top: 10px;
}
.section-head--center .eyebrow::after { margin-left: auto; margin-right: auto; }

h1, .h1 { font-size: clamp(30px, 4.4vw, 54px); letter-spacing: -0.015em; font-weight: 600; }
h2, .h2 { font-size: clamp(24px, 2.7vw, 36px); letter-spacing: -0.01em; }
h3, .h3 { font-size: clamp(18px, 1.5vw, 21px); }
h4, .h4 { font-size: 15px; letter-spacing: 0.02em; }

.lead {
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.8;
  color: var(--muted);
}
.section--dark .lead { color: var(--muted-dark); }
.small { font-size: 13.5px; color: var(--muted); line-height: 1.7; }
.section--dark .small { color: var(--muted-dark); }

/* ---------------------------------------------------------------- 5. Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 26px;
  font-size: 13px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  border: 1px solid transparent; border-radius: var(--radius);
  cursor: pointer; transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.btn--primary { background: var(--brand); color: #fff; }
.btn--primary:hover { background: var(--brand-strong); color: #fff; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: var(--ink); color: var(--ink); }
/* 深底上的幽灵按钮（Hero / 内页页头 / 深色区块 / CTA 条） */
.hero .btn--ghost,
.page-head .btn--ghost,
.cta-band .btn--ghost,
.section--dark .btn--ghost { color: #fff; border-color: rgba(255, 255, 255, 0.5); }
.hero .btn--ghost:hover,
.page-head .btn--ghost:hover,
.cta-band .btn--ghost:hover,
.section--dark .btn--ghost:hover { color: #fff; border-color: #fff; background: rgba(255, 255, 255, 0.08); }
.btn--onDark { background: #fff; color: var(--ink); }
.btn--onDark:hover { background: var(--sand); color: var(--ink); }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }

.arrow-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
}
.arrow-link::after { content: "→"; transition: transform .18s ease; }
.arrow-link:hover::after { transform: translateX(4px); }

/* ---------------------------------------------------------------- 6. Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250, 248, 245, 0.94);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  min-height: 76px;
}
.brand { display: flex; align-items: baseline; gap: 10px; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand__mark {
  display: inline-grid; place-items: center;
  width: 38px; height: 38px; border-radius: var(--radius);
  background: var(--ink); color: #fff;
  font-size: 14px; font-weight: 700; letter-spacing: 0.04em;
  align-self: center;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__latin { font-size: 17px; font-weight: 700; letter-spacing: 0.16em; }
.brand__sub { font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }

.site-nav ul { display: flex; align-items: center; gap: 26px; list-style: none; margin: 0; padding: 0; }
.site-nav a {
  display: inline-block;
  font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink); padding: 9px 0; border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--brand); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--camel); }
.header-tools { display: flex; align-items: center; gap: 16px; }
.lang-switch {
  font-size: 12px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 7px 12px;
  color: var(--ink); white-space: nowrap;
}
.lang-switch:hover { border-color: var(--ink); color: var(--ink); }

.burger {
  display: none; width: 42px; height: 38px; padding: 0;
  background: transparent; border: 1px solid var(--line-strong); border-radius: var(--radius);
  cursor: pointer; position: relative;
}
.burger span {
  position: absolute; left: 11px; right: 11px; height: 1.6px; background: var(--ink);
  transition: transform .2s ease, opacity .2s ease;
}
.burger span:nth-child(1) { top: 13px; }
.burger span:nth-child(2) { top: 18px; }
.burger span:nth-child(3) { top: 23px; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------------------------------------------------------------- 7. Hero */
.hero { position: relative; overflow: hidden; background: var(--ink); }
.hero__media { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__media picture { display: block; width: 100%; height: 100%; }
.hero__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(96deg, rgba(20,17,15,.9) 0%, rgba(20,17,15,.74) 42%, rgba(20,17,15,.36) 100%);
}
.hero__inner { position: relative; z-index: 2; padding: 132px 0 116px; max-width: 720px; }
.hero h1 { color: #fff; }
.hero__eyebrow { color: var(--sand); }
.hero__lead { color: #e2dbd3; font-size: clamp(16px, 1.4vw, 19px); line-height: 1.85; margin-top: 24px; max-width: 620px; }
.hero__points {
  display: flex; flex-wrap: wrap; gap: 12px 28px;
  list-style: none; margin: 36px 0 0; padding: 0;
}
.hero__points li {
  position: relative; padding-left: 18px;
  font-size: 13.5px; letter-spacing: 0.03em; color: #d9d2ca;
}
.hero__points li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 8px; height: 1.5px; background: var(--camel);
}

/* 内页页头 */
.page-head { background: var(--ink-2); color: #efe9e3; padding: 78px 0 66px; }
.page-head h1 { color: #fff; max-width: 20ch; }
.page-head .lead { color: #ded6cd; max-width: 660px; margin-top: 20px; }
.page-head a { color: var(--sand); }
.page-head a:hover { color: #fff; }

.crumbs { padding: 18px 0 0; font-size: 12.5px; color: var(--muted); }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.crumbs li::after { content: "/"; margin-left: 8px; color: var(--line-strong); }
.crumbs li:last-child::after { content: ""; }
.page-head .crumbs { color: var(--muted-dark); }
.page-head .crumbs a { color: var(--muted-dark); }
.page-head .crumbs a:hover { color: #fff; }

/* ---------------------------------------------------------------- 8. Facts */
.facts { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.facts__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.fact { padding: 40px 28px; border-right: 1px solid var(--line); }
.fact:last-child { border-right: 0; }
.fact__k {
  font-size: clamp(22px, 2.2vw, 30px); font-weight: 700; letter-spacing: -0.01em;
  color: var(--brand); margin-bottom: 10px; line-height: 1.1;
}
.fact__v { font-size: 13.5px; color: var(--muted); line-height: 1.7; }

/* ---------------------------------------------------------------- 9. Cards */
.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.card__media { aspect-ratio: 900 / 530; overflow: hidden; background: var(--paper-3); }
.card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.card:hover .card__media img { transform: scale(1.03); }
.card__body { padding: 26px 26px 30px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card__title { font-size: 17px; }
.card__title a { color: var(--ink); }
.card__title a:hover { color: var(--brand); }
.card__desc { font-size: 14px; color: var(--muted); line-height: 1.75; }
.card__meta { margin-top: auto; padding-top: 14px; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.card--flat { background: transparent; border: 0; }
.card--flat:hover { transform: none; }

/* 流程图 */
.flow { counter-reset: flow; }
.flow__item {
  position: relative; padding: 30px 26px 30px 0; border-top: 1px solid var(--line);
  display: grid; grid-template-columns: 76px 1fr; gap: 24px; align-items: start;
}
.flow__n {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.06em;
  color: var(--brand); padding-top: 4px;
}
.flow__name { font-size: 17px; margin-bottom: 6px; }
.flow__desc { font-size: 14px; color: var(--muted); }
.section--dark .flow__item { border-top-color: var(--line-dark); }
.section--dark .flow__n { color: var(--sand); }
.section--dark .flow__desc { color: var(--muted-dark); }

/* ---------------------------------------------------------------- 10. Product grid */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filter {
  padding: 9px 16px; font-size: 12px; font-weight: 600; letter-spacing: 0.09em;
  text-transform: uppercase; background: transparent; color: var(--ink);
  border: 1px solid var(--line-strong); border-radius: var(--radius); cursor: pointer;
}
.filter:hover { border-color: var(--ink); }
.filter[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }

.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); }
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: border-color .2s ease, transform .2s ease;
}
.product-card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.product-card__media { aspect-ratio: 900 / 608; overflow: hidden; background: var(--paper-3); }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease; }
.product-card:hover .product-card__media img { transform: scale(1.035); }
.product-card__body { padding: 24px 24px 26px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.product-card__brand {
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--brand);
}
.product-card__title { font-size: 16.5px; }
.product-card__title a { color: var(--ink); }
.product-card__title a:hover { color: var(--brand); }
.product-card__specs { margin: 0; font-size: 13px; color: var(--muted); display: grid; gap: 5px; }
.product-card__specs div { display: flex; gap: 8px; }
.product-card__specs dt { min-width: 74px; color: var(--muted); }
.product-card__specs dd { margin: 0; color: var(--ink); }

/* ---------------------------------------------------------------- 11. Brand wall */
.brand-wall {
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 1px; background: var(--line); border: 1px solid var(--line);
}
.brand-wall__cell {
  min-width: 0; background: #fff; display: grid; place-items: center; padding: 26px 18px;
  aspect-ratio: 5 / 3;
}
.brand-wall__cell img {
  width: auto; max-width: 100%; max-height: 100%; object-fit: contain;
  filter: grayscale(1); opacity: .62; transition: filter .25s ease, opacity .25s ease;
}
.brand-wall__cell:hover img { filter: grayscale(0); opacity: 1; }

/* ---------------------------------------------------------------- 12. Split block */
.split { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 72px; align-items: center; }
.split--reverse .split__media { order: 2; }
.split__media img { border-radius: var(--radius); width: 100%; }
.split__body p { color: var(--muted); }
.section--dark .split__body p { color: var(--muted-dark); }
.stat-list { list-style: none; margin: 32px 0 0; padding: 0; display: grid; gap: 18px; }
.stat-list li { border-top: 1px solid var(--line); padding-top: 14px; }
.section--dark .stat-list li { border-top-color: var(--line-dark); }
.stat-list strong { display: block; font-size: 15px; font-weight: 600; }
.stat-list span { font-size: 13.5px; color: var(--muted); }
.section--dark .stat-list span { color: var(--muted-dark); }

/* ---------------------------------------------------------------- 13. CTA band */
.cta-band { background: var(--ink-2); color: #efe9e3; padding: 88px 0; }
.cta-band__inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 36px;
}
.cta-band h2 { color: #fff; max-width: 22ch; }
.cta-band p { color: #ded6cd; max-width: 56ch; margin-top: 14px; }

/* ---------------------------------------------------------------- 14. Prose */
.prose { max-width: 760px; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 2.2em; font-size: clamp(20px, 2vw, 26px); }
.prose h3 { margin-top: 1.8em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: .45em; color: var(--ink); }
.prose strong { font-weight: 600; }
.prose blockquote {
  margin: 2em 0; padding: 4px 0 4px 24px; border-left: 2px solid var(--camel);
  color: var(--muted); font-size: 16.5px;
}
.prose figure { margin: 2em 0; }
.prose figure img { width: 100%; border: 1px solid var(--line); border-radius: var(--radius); }
.prose figcaption { margin-top: 12px; font-size: 13px; color: var(--muted); }

/* 文章页版式 */
.article-head { padding: 60px 0 0; }
.article-head h1 { max-width: 26ch; }
.article-meta {
  display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 22px;
  font-size: 12.5px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted);
}
.article-body { padding: 56px 0 var(--sec-y); }

.edit-band {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 40px 0; margin-bottom: 56px;
}
.edit-band__n {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em;
  color: var(--brand); margin-bottom: 12px;
}

/* ---------------------------------------------------------------- 15. Spec list */
.spec-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 30px 26px;
}
.spec-list { margin: 0; display: grid; gap: 0; }
.spec-list > div {
  display: grid; grid-template-columns: 108px 1fr; gap: 18px;
  padding: 13px 0; border-bottom: 1px solid var(--line);
}
.spec-list > div:last-child { border-bottom: 0; }
.spec-list dt { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); padding-top: 2px; }
.spec-list dd { margin: 0; font-size: 14.5px; }

/* 产品详情：竖版工艺图 */
.detail-figure { border: 1px solid var(--line); background: #fff; border-radius: var(--radius); overflow: hidden; }
.detail-figure__scroll { max-height: 78vh; overflow-y: auto; overscroll-behavior: contain; }
.detail-figure__scroll img { width: 100%; }
.detail-figure__bar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 18px; border-top: 1px solid var(--line); background: var(--paper-2);
  font-size: 12.5px; color: var(--muted);
}

/* ---------------------------------------------------------------- 16. Report */
.report-figures { display: grid; gap: 32px; }
.report-figure { border: 1px solid var(--line); background: #fff; border-radius: var(--radius); padding: 16px; }
.report-figure img { width: 100%; }
.report-figure figcaption { margin-top: 12px; font-size: 13px; color: var(--muted); }

/* ---------------------------------------------------------------- 17. FAQ */
.faq { border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary {
  cursor: pointer; list-style: none; position: relative;
  padding: 20px 44px 20px 0; font-size: 16.5px; font-weight: 600; color: var(--ink);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  font-size: 20px; font-weight: 400; color: var(--brand); line-height: 1;
}
.faq__item[open] summary::after { content: "\2013"; }
.faq__item summary:hover { color: var(--brand); }
.faq__answer { padding: 0 44px 22px 0; }
.faq__answer p { color: var(--muted); font-size: 15px; margin: 0; }

/* ---------------------------------------------------------------- 18. Contact */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 72px; align-items: start; }
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 26px; }
.contact-list li { border-top: 1px solid var(--line); padding-top: 16px; }
.contact-list dt,
.contact-list .k {
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 7px;
}
.contact-list .v { font-size: 16px; line-height: 1.7; }
.contact-list a { color: var(--ink); border-bottom: 1px solid var(--line-strong); }
.contact-list a:hover { color: var(--brand); border-bottom-color: var(--brand); }

.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; }
.form__row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 18px; }
.field label { font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.field input, .field textarea {
  font: inherit; font-size: 15px; color: var(--ink);
  padding: 12px 14px; background: var(--paper);
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  width: 100%; transition: border-color .16s ease, background-color .16s ease;
}
.field input:focus, .field textarea:focus { background: #fff; border-color: var(--brand); outline: none; }
.field textarea { min-height: 150px; resize: vertical; }
.field--full { grid-column: 1 / -1; }
.form__foot { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 8px; }
.form__status { font-size: 13.5px; color: var(--brand); }
.form__status[hidden] { display: none; }
.req { color: var(--brand); }

/* ---------------------------------------------------------------- 19. Footer */
.site-footer { background: var(--ink); color: #cfc7bf; padding: 76px 0 30px; font-size: 14px; }
.site-footer__grid {
  display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 48px;
  padding-bottom: 44px; border-bottom: 1px solid var(--line-dark);
}
.site-footer .brand__mark { background: #fff; color: var(--ink); }
.site-footer .brand__latin { color: #fff; letter-spacing: 0.16em; font-weight: 700; }
.site-footer .brand__sub { color: var(--muted-dark); }
.site-footer__tagline { margin-top: 18px; color: var(--sand); font-size: 14px; letter-spacing: 0.04em; }
.site-footer h3 {
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase;
  color: #fff; margin-bottom: 16px;
}
.site-footer a { color: #cfc7bf; }
.site-footer a:hover { color: #fff; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.site-footer__bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px;
  padding-top: 26px; font-size: 12.5px; color: var(--muted-dark);
}
.site-footer__note { margin-top: 18px; font-size: 12.5px; color: var(--muted-dark); max-width: 46ch; }

/* ---------------------------------------------------------------- 20. To top */
.totop {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 42px; height: 42px; display: grid; place-items: center;
  background: var(--ink); color: #fff; border: 0; border-radius: var(--radius);
  cursor: pointer; opacity: 0; transform: translateY(10px); pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
}
.totop[data-visible="true"] { opacity: 1; transform: none; pointer-events: auto; }
.totop:hover { background: var(--brand); }

/* ---------------------------------------------------------------- 21. Language splash */
.splash {
  min-height: 100vh; display: grid; place-items: center; text-align: center;
  background: var(--ink); color: #ece7e1; padding: 40px 24px;
}
.splash__mark {
  display: inline-grid; place-items: center; width: 62px; height: 62px; margin: 0 auto 26px;
  background: #fff; color: var(--ink); font-weight: 700; letter-spacing: 0.05em;
  border-radius: var(--radius);
}
.splash h1 { color: #fff; font-size: clamp(30px, 6vw, 52px); letter-spacing: 0.14em; }
.splash__tagline { color: var(--sand); margin-top: 14px; letter-spacing: 0.06em; }
.splash__choices { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; margin-top: 44px; }
.splash__choices a {
  min-width: 190px; padding: 18px 26px; border: 1px solid rgba(255,255,255,.34);
  border-radius: var(--radius); color: #fff; font-size: 15px;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease;
}
.splash__choices a:hover { background: #fff; color: var(--ink); border-color: #fff; }
.splash__choices small { display: block; font-size: 12px; letter-spacing: 0.06em; opacity: .7; margin-top: 5px; }
.splash__hint { margin-top: 30px; font-size: 12.5px; color: var(--muted-dark); }

/* ---------------------------------------------------------------- 22. Motion */
.reveal { opacity: 0; transform: translateY(16px); }
.reveal.is-in { opacity: 1; transform: none; transition: opacity .6s ease, transform .6s ease; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------------------------------------------------------------- 23. Responsive */
@media (max-width: 1080px) {
  :root { --sec-y: 88px; --sec-y-sm: 60px; --gap: 24px; }
  .brand-wall { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .facts__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact:nth-child(2) { border-right: 0; }
  .fact:nth-child(1), .fact:nth-child(2) { border-bottom: 1px solid var(--line); }
  .split { gap: 44px; }
  .contact-grid { gap: 44px; }
}

@media (max-width: 920px) {
  .site-nav {
    position: fixed; inset: 76px 0 auto 0; background: var(--paper);
    border-bottom: 1px solid var(--line); padding: 18px 28px 26px;
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: opacity .2s ease, transform .2s ease, visibility .2s;
    max-height: calc(100vh - 76px); overflow-y: auto;
  }
  .site-nav.is-open { transform: none; opacity: 1; visibility: visible; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav li { border-bottom: 1px solid var(--line); }
  .site-nav a { display: block; padding: 15px 2px; font-size: 13px; border-bottom: 0; }
  .site-nav a[aria-current="page"] { color: var(--brand); }
  .burger { display: block; }
  .grid--3, .grid--4, .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split, .contact-grid { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .hero__inner { padding: 96px 0 84px; }
}

@media (max-width: 640px) {
  :root { --sec-y: 64px; --sec-y-sm: 48px; --gap: 20px; }
  body { font-size: 15.5px; }
  .wrap { padding: 0 20px; }
  .grid--2, .grid--3, .grid--4, .product-grid { grid-template-columns: 1fr; }
  .brand-wall { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .facts__grid { grid-template-columns: 1fr; }
  .fact { border-right: 0; border-bottom: 1px solid var(--line); }
  .fact:last-child { border-bottom: 0; }
  .flow__item { grid-template-columns: 1fr; gap: 8px; }
  .site-footer__grid { grid-template-columns: 1fr; }
  .brand__sub { display: none; }
  .hero__inner { padding: 76px 0 68px; }
  .page-head { padding: 56px 0 48px; }
  .form { padding: 24px; }
  .form__row { grid-template-columns: 1fr; gap: 0; }
  .spec-list > div { grid-template-columns: 1fr; gap: 4px; }
  .cta-band { padding: 64px 0; }
  .product-card__specs dt { min-width: 66px; }
}