/* =========================================================
   美狮贵宾梯子 · 中国玩家专区  —  /assets/site.css
   共享层：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================= */

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

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

body,
h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd {
  margin: 0;
}

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

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

table { border-collapse: collapse; width: 100%; }

/* ---------- 变量 ---------- */
:root {
  --ink-900: #0E1430;
  --ink-800: #1B2450;
  --ink-700: #2C3A73;
  --ink-600: #3A4B8F;

  --mane-500: #C98A2E;
  --mane-300: #E8B563;

  --amber-500: #FF8A1E;
  --amber-300: #FFB65C;

  --steel-400: #7C93A6;
  --steel-200: #A9BAC7;

  --paper: #F6EFE3;
  --paper-ink: #1B2450;

  --text: #F2F5FA;
  --text-dim: #B9C3D9;

  --line: rgba(169, 186, 199, 0.18);
  --line-strong: rgba(169, 186, 199, 0.34);
  --glass: rgba(44, 58, 115, 0.34);

  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;

  --shell: 1240px;

  --font-head: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC",
    "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC",
    "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas,
    "Courier New", monospace;
}

/* ---------- 基础 ---------- */
html, body { min-height: 100%; }

body {
  background-color: var(--ink-900);
  background-image:
    radial-gradient(1180px 680px at 84% -10%, rgba(201, 138, 46, 0.16), transparent 62%),
    radial-gradient(880px 620px at 2% 4%, rgba(44, 58, 115, 0.42), transparent 60%),
    linear-gradient(180deg, #101737 0%, #0E1430 44%, #0B1029 100%);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 全局梯格底纹，呼应信息层级 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(124, 147, 166, 0.055) 0 1px,
    transparent 1px 46px
  );
}

body > * { position: relative; z-index: 1; }

main {
  display: block;
  min-height: 40vh;
}

:focus-visible {
  outline: 2px solid var(--amber-300);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(255, 138, 30, 0.32);
  color: #FFFFFF;
}

/* ---------- 中文排版 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: 0.04em;
  color: var(--text);
}

p { text-wrap: pretty; }

strong { font-weight: 700; color: var(--mane-300); }

/* ---------- 布局 ---------- */
.shell {
  width: min(var(--shell), 100% - 2.4rem);
  margin-inline: auto;
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 11px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: background-color 0.2s ease, color 0.2s ease,
    border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--accent {
  background: linear-gradient(135deg, var(--amber-500), var(--mane-500));
  color: #1A0F03;
  border-color: rgba(255, 182, 92, 0.55);
  box-shadow: 0 10px 24px -14px rgba(255, 138, 30, 0.9);
}

.btn--accent:hover {
  background: linear-gradient(135deg, var(--amber-300), var(--amber-500));
}

.btn--ghost {
  background: rgba(44, 58, 115, 0.42);
  color: var(--text);
  border-color: var(--line-strong);
}

.btn--ghost:hover {
  background: rgba(44, 58, 115, 0.72);
  border-color: var(--mane-500);
  color: var(--mane-300);
}

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

.btn--line:hover {
  color: var(--mane-300);
  border-color: var(--mane-500);
}

/* ---------- 页头 ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 130;
  padding: 10px 18px;
  border-radius: 0 0 10px 10px;
  background: var(--amber-500);
  color: #1A0F03;
  font-size: 14px;
  font-weight: 700;
  transition: top 0.18s ease;
}

.skip-link:focus { top: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(14, 20, 48, 0.97), rgba(14, 20, 48, 0.9));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-upper {
  background: rgba(10, 15, 38, 0.9);
  border-bottom: 1px solid rgba(169, 186, 199, 0.12);
}

.header-upper__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 38px;
}

.header-brandline {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: 0 0 auto;
}

.header-meta__item {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--steel-200);
}

.header-meta__link {
  font-size: 13px;
  font-weight: 600;
  color: var(--amber-300);
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.header-meta__link:hover {
  color: var(--amber-500);
  border-bottom-color: currentColor;
}

.header-main {
  background:
    linear-gradient(180deg, rgba(22, 30, 69, 0.9), rgba(19, 26, 60, 0.86));
}

.header-main__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-block: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 1 auto;
  min-width: 0;
}

.brand__mark {
  position: relative;
  display: block;
  flex: 0 0 auto;
  width: 34px;
  height: 38px;
  border-radius: 9px;
  border: 1px solid rgba(232, 181, 99, 0.38);
  overflow: hidden;
  background-image:
    repeating-linear-gradient(
      180deg,
      rgba(169, 186, 199, 0.85) 0 1.5px,
      transparent 1.5px 8px
    ),
    linear-gradient(165deg, rgba(201, 138, 46, 0.32), rgba(255, 138, 30, 0.1));
  background-size: 14px 100%, 100% 100%;
  background-position: 10px 9px, 0 0;
  background-repeat: no-repeat, no-repeat;
}

.brand__mark::before,
.brand__mark::after {
  content: "";
  position: absolute;
  top: 7px;
  bottom: 7px;
  width: 2px;
  border-radius: 2px;
  background: var(--mane-300);
}

.brand__mark::before { left: 9px; }
.brand__mark::after { right: 9px; }

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.2;
  color: var(--text);
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  line-height: 1.5;
  color: var(--steel-200);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: rgba(44, 58, 115, 0.4);
  color: var(--text);
  font-size: 13.5px;
  font-weight: 600;
}

.nav-toggle:hover { border-color: var(--mane-500); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 20px;
  height: 14px;
  flex: 0 0 auto;
}

.nav-toggle__bars i {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--mane-300);
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.nav-toggle__bars i:nth-child(1) { top: 0; }
.nav-toggle__bars i:nth-child(2) { top: 6px; right: 6px; }
.nav-toggle__bars i:nth-child(3) { top: 12px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) {
  opacity: 0;
  transform: scaleX(0.4);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.site-nav {
  display: block;
  background: rgba(10, 15, 38, 0.94);
  border-top: 1px solid var(--line);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 15px 15px 16px;
  font-size: 14.5px;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  transition: color 0.18s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--amber-500);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s ease;
}

.site-nav__link:hover { color: var(--text); }
.site-nav__link:hover::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] {
  color: var(--mane-300);
  font-weight: 600;
}

.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.site-nav__note {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--steel-400);
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(44px, 7vw, 96px);
  background-image:
    radial-gradient(900px 340px at 80% 0%, rgba(201, 138, 46, 0.13), transparent 70%),
    linear-gradient(180deg, #121A3C 0%, #0C1128 100%);
  border-top: 1px solid var(--line-strong);
  color: var(--text-dim);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--mane-500), var(--amber-500) 38%, transparent 88%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr 1.5fr;
  gap: clamp(24px, 3vw, 44px);
  padding-block: clamp(34px, 5vw, 58px);
}

.footer-brand__name {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--text);
}

.footer-brand__desc {
  margin-top: 12px;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.footer-brand__mono {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--steel-400);
}

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--mane-300);
  margin-bottom: 14px;
}

.footer-list a {
  display: inline-block;
  padding-block: 6px;
  font-size: 14.5px;
  color: var(--text-dim);
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.footer-list a:hover {
  color: var(--amber-300);
  border-bottom-color: rgba(255, 182, 92, 0.5);
}

.footer-facts li {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  word-break: break-word;
}

.footer-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--steel-400);
}

.footer-local {
  display: flex;
  align-items: baseline;
  gap: 18px;
  flex-wrap: wrap;
  padding-block: 20px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.footer-local__title {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--amber-300);
}

.footer-local__text {
  font-size: 14px;
  color: var(--text-dim);
  max-width: 72ch;
}

.footer-base {
  background: rgba(8, 12, 30, 0.72);
  padding-block: 16px;
}

.footer-base__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-base__copy {
  font-size: 13px;
  color: var(--text-dim);
}

.footer-base__icp {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--steel-200);
}

/* ---------- 通用内容组件 ---------- */
.page-head {
  padding-block: clamp(30px, 5vw, 62px) clamp(16px, 3vw, 30px);
}

.page-head__eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--amber-300);
}

.page-head__title {
  margin-top: 12px;
  font-size: clamp(28px, 4.4vw, 46px);
  letter-spacing: 0.04em;
  line-height: 1.18;
}

.page-head__lead {
  max-width: 64ch;
  margin-top: 14px;
  font-size: 16.5px;
  color: var(--text-dim);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}

.section-head__title {
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: 0.04em;
}

.section-head__index {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--steel-400);
}

.breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--steel-400);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumbs li + li::before {
  content: "/";
  color: var(--steel-400);
}

.breadcrumbs a { color: var(--text-dim); }
.breadcrumbs a:hover { color: var(--amber-300); }
.breadcrumbs [aria-current="page"] { color: var(--steel-200); }

.prose {
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

.prose h2,
.prose h3 {
  color: var(--text);
  margin-top: 1.6em;
  margin-bottom: 0.5em;
  font-size: clamp(20px, 2.5vw, 25px);
}

.prose p + p { margin-top: 1em; }
.prose ul { margin-top: 0.8em; }

.prose li {
  position: relative;
  padding-left: 18px;
  margin-top: 0.45em;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 2px;
  border-radius: 2px;
  background: var(--mane-500);
}

.prose--paper {
  max-width: none;
  background: var(--paper);
  color: var(--paper-ink);
  border-radius: var(--radius-l);
  padding: clamp(20px, 3vw, 36px);
  box-shadow: 0 26px 60px -40px rgba(0, 0, 0, 0.9);
}

.prose--paper h2,
.prose--paper h3,
.prose--paper strong { color: var(--paper-ink); }

.prose--paper li::before { background: var(--mane-500); }

.card {
  background: rgba(27, 36, 80, 0.66);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: clamp(18px, 2.4vw, 26px);
}

.glass {
  background: var(--glass);
  border: 1px solid rgba(169, 186, 199, 0.22);
  border-radius: var(--radius-l);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.panel {
  background: rgba(14, 20, 48, 0.7);
  border: 1px solid var(--line);
  border-left: 3px solid var(--mane-500);
  border-radius: var(--radius-s);
  padding: clamp(16px, 2vw, 22px);
}

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

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  background: rgba(255, 182, 92, 0.14);
  color: var(--amber-300);
  border: 1px solid rgba(255, 182, 92, 0.28);
}

.ladder-rule {
  height: 22px;
  margin-block: clamp(24px, 4vw, 44px);
  background-image: repeating-linear-gradient(
    90deg,
    rgba(124, 147, 166, 0.42) 0 2px,
    transparent 2px 14px
  );
  background-size: auto 6px;
  background-repeat: repeat-x;
  background-position: 0 50%;
  opacity: 0.65;
}

/* ---------- 响应式图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background-color: var(--ink-800);
  background-image: repeating-linear-gradient(
    180deg,
    rgba(124, 147, 166, 0.16) 0 2px,
    transparent 2px 12px
  );
  isolation: isolate;
}

.media-frame > img,
.media-frame > svg,
.media-frame > picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(14, 20, 48, 0) 46%, rgba(14, 20, 48, 0.58));
}

.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--wide { aspect-ratio: 21 / 9; }

/* ---------- 显现动画 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

[data-reveal="in"] {
  opacity: 1;
  transform: none;
}

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 100;
  pointer-events: none;
  background: rgba(14, 20, 48, 0.4);
}

.scroll-progress__bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--mane-500), var(--amber-500));
  box-shadow: 0 0 12px rgba(255, 138, 30, 0.6);
  transition: width 0.12s linear;
}

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 18px;
  bottom: 22px;
  z-index: 95;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(44, 58, 115, 0.95), rgba(20, 27, 60, 0.95));
  color: var(--mane-300);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.24s ease, transform 0.24s ease, visibility 0.24s ease,
    border-color 0.2s ease, color 0.2s ease;
  box-shadow: 0 16px 32px -20px rgba(0, 0, 0, 0.95);
}

.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  border-color: var(--amber-500);
  color: var(--amber-300);
}

.to-top__mark {
  position: relative;
  display: block;
  width: 16px;
  height: 16px;
  color: currentColor;
}

.to-top__mark::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 10px;
  border-left: 2px solid currentColor;
  border-top: 2px solid currentColor;
  border-radius: 1px;
  transform: translate(-50%, -28%) rotate(45deg);
}

.to-top__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 2px;
  height: 12px;
  border-radius: 2px;
  background: currentColor;
  transform: translate(-50%, -50%);
}

/* ---------- 断点 ---------- */
@media (max-width: 1080px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }

  .footer-brand { grid-column: 1 / -1; }
  .footer-brand__desc { max-width: 56ch; }
}

@media (max-width: 860px) {
  .header-upper { display: none; }

  .header-main__inner {
    flex-wrap: wrap;
    row-gap: 10px;
    padding-block: 12px;
  }

  .brand { order: 1; flex: 1 1 auto; }
  .nav-toggle { order: 2; display: inline-flex; }

  .header-actions {
    order: 3;
    flex: 1 0 100%;
    gap: 8px;
  }

  .header-actions .btn {
    flex: 1 1 0;
    font-size: 14px;
    padding-inline: 10px;
  }

  .site-nav {
    display: none;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
  }

  .site-nav[data-open] { display: block; }

  .site-nav__inner {
    display: block;
    padding-block: 6px 16px;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__link {
    width: 100%;
    justify-content: flex-start;
    padding: 14px 2px;
    border-bottom: 1px solid var(--line);
    font-size: 15.5px;
  }

  .site-nav__link::after { display: none; }

  .site-nav__link[aria-current="page"] {
    color: var(--amber-300);
    box-shadow: inset 3px 0 0 var(--amber-500);
    padding-left: 12px;
  }

  .site-nav__note {
    display: block;
    margin-top: 14px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 26px 20px;
  }

  .footer-brand { grid-column: 1 / -1; }

  .footer-local {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 640px) {
  body { font-size: 16px; }

  .shell { width: min(var(--shell), 100% - 1.7rem); }

  .brand__name { font-size: 15.5px; letter-spacing: 0.04em; }
  .brand__sub { font-size: 10px; letter-spacing: 0.16em; }
  .brand__mark { width: 30px; height: 34px; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-base__inner { flex-direction: column; align-items: flex-start; }

  .to-top { right: 14px; bottom: 16px; width: 44px; height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .btn:hover { transform: none; }

  .to-top {
    transition: opacity 0.001ms linear, visibility 0.001ms linear;
    transform: none;
  }
}