/* ============================================================
   华体网页版登录 · 共享样式表  /assets/site.css
   顺序：Reset → Tokens → Base → Utilities → Buttons → Header
        → Coord Rail → Footer → Components → Motion → Responsive
   ============================================================ */

/* ---------- 01 Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption, blockquote, dl, dd {
  margin: 0;
}

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

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

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

button { background: none; border: 0; padding: 0; cursor: pointer; }

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

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

hr { border: 0; }

/* ---------- 02 Tokens ---------- */
:root {
  /* 色彩 */
  --c-space: #071A2F;
  --c-ink: #0D2B45;
  --c-cyan: #18D6C8;
  --c-lime: #B7FF3C;
  --c-orange: #FF8A3D;
  --c-paper: #F2E8D6;
  --c-white: #EAF6F7;
  --c-slate: #7C98A6;
  --c-coal: #101820;
  --c-coral: #FF5C5C;

  /* 线条 */
  --line: rgba(124, 152, 166, 0.26);
  --line-strong: rgba(124, 152, 166, 0.46);
  --line-cyan: rgba(24, 214, 200, 0.34);
  --line-lime: rgba(183, 255, 60, 0.42);

  /* 字体 */
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 尺寸 */
  --w-max: 1320px;
  --gutter: clamp(16px, 3.4vw, 40px);
  --header-h: 64px;
  --cut: 20px;
  --radius-pill: 999px;
  --gap: clamp(16px, 2vw, 28px);

  /* 阴影与缓动 */
  --shadow-1: 0 12px 30px rgba(2, 10, 20, 0.42);
  --shadow-2: 0 22px 50px rgba(2, 10, 20, 0.58);
  --ease: cubic-bezier(0.22, 0.8, 0.28, 1);
}

/* ---------- 03 Base ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: clamp(16px, 0.5vw + 14.4px, 18px);
  font-weight: 400;
  line-height: 1.75;
  color: var(--c-white);
  background-color: var(--c-space);
  background-image:
    radial-gradient(1100px 620px at 82% -12%, rgba(24, 214, 200, 0.12), transparent 62%),
    radial-gradient(900px 520px at -6% 6%, rgba(255, 138, 61, 0.09), transparent 58%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

h1 { font-size: clamp(38px, 6vw, 76px); line-height: 1.06; }
h2 { font-size: clamp(27px, 3.4vw, 44px); }
h3 { font-size: clamp(20px, 2vw, 26px); letter-spacing: -0.01em; }
h4 { font-size: 1.05rem; font-weight: 700; letter-spacing: 0.01em; }

p { max-width: 74ch; }
p + p { margin-top: 1em; }

strong { font-weight: 700; color: var(--c-white); }

::selection { background: var(--c-lime); color: var(--c-coal); }

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

:focus:not(:focus-visible) { outline: none; }

#main-content { scroll-margin-top: 96px; }

/* ---------- 04 Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(44px, 7vw, 92px);
}

.section--paper {
  background: var(--c-paper);
  color: var(--c-coal);
}

.section--paper h2,
.section--paper h3,
.section--paper h4,
.section--paper strong { color: var(--c-coal); }

.section--paper .eyebrow { color: var(--c-ink); }
.section--paper .rule { background: linear-gradient(90deg, var(--c-ink), rgba(16, 24, 32, 0.05)); }

.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)); }

.mono { font-family: var(--font-mono); font-weight: 500; letter-spacing: 0.02em; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

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

.eyebrow--v {
  writing-mode: vertical-rl;
  letter-spacing: 0.32em;
  padding-block: 4px;
}

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

.num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-lime);
}

.rule {
  height: 1px;
  margin-block: clamp(24px, 4vw, 40px);
  background: linear-gradient(90deg, var(--c-cyan), rgba(24, 214, 200, 0.06) 62%, transparent);
}

/* 面包屑 */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-slate);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.breadcrumb a { transition: color 0.18s var(--ease); }
.breadcrumb a:hover { color: var(--c-lime); }

.breadcrumb li + li::before {
  content: "/";
  margin-right: 4px;
  color: var(--c-cyan);
}

.breadcrumb [aria-current="page"] { color: var(--c-white); }

/* ---------- 05 Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--c-white);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition:
    background-color 0.18s var(--ease),
    color 0.18s var(--ease),
    border-color 0.18s var(--ease),
    transform 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}

.btn--primary {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-coal);
}

.btn--primary:hover {
  background: var(--c-lime);
  border-color: var(--c-lime);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(183, 255, 60, 0.22);
}

.btn--ghost {
  background: rgba(24, 214, 200, 0.08);
  color: var(--c-white);
}

.btn--ghost:hover {
  background: rgba(24, 214, 200, 0.18);
  border-color: var(--c-cyan);
  color: var(--c-lime);
  transform: translateY(-2px);
}

.btn:active { transform: translateY(0); }

/* ---------- 06 Skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--c-lime);
  color: var(--c-coal);
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 3px solid var(--c-white);
  outline-offset: 2px;
}

/* ---------- 07 Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 12px var(--gutter);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 26, 47, 0.94) 0%, rgba(7, 26, 47, 0.72) 62%, rgba(7, 26, 47, 0) 100%);
}

.scroll-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-lime) 62%, var(--c-orange));
  pointer-events: none;
}

.header-frame {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(10px, 2vw, 28px);
  max-width: var(--w-max);
  min-height: var(--header-h);
  margin-inline: auto;
  padding: 8px 10px 8px 16px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-pill);
  background: linear-gradient(118deg, rgba(13, 43, 69, 0.96), rgba(7, 26, 47, 0.92));
  box-shadow: var(--shadow-1);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
}

.header-frame::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 22%;
  width: 120px;
  height: 1px;
  transform: translateY(-50%) rotate(-24deg);
  background: linear-gradient(90deg, transparent, rgba(24, 214, 200, 0.5), transparent);
  pointer-events: none;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand__mark {
  width: 30px;
  height: 30px;
  flex: none;
  background-image:
    linear-gradient(135deg, var(--c-cyan) 0 56%, transparent 56%),
    linear-gradient(315deg, var(--c-lime) 0 44%, transparent 44%);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
  transition: transform 0.2s var(--ease);
}

.brand:hover .brand__mark { transform: rotate(-8deg); }

.brand__text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.15;
}

.brand__name {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--c-white);
}

.brand__line {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--c-cyan);
}

/* 主导航 */
.primary-nav { min-width: 0; }

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

.primary-nav__list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 13px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
  color: var(--c-white);
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.primary-nav__list a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 7px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--c-lime);
  transform: translateX(-50%);
  transition: width 0.2s var(--ease);
}

.primary-nav__list a:hover {
  color: var(--c-lime);
  background-color: rgba(24, 214, 200, 0.1);
}

.primary-nav__list a:hover::after { width: 14px; }

.primary-nav__list a[aria-current="page"] {
  background-color: var(--c-lime);
  color: var(--c-coal);
  font-weight: 700;
}

.primary-nav__list a[aria-current="page"]::after { width: 0; }

.primary-nav__list a[aria-current="page"]:hover {
  background-color: var(--c-lime);
  color: var(--c-coal);
}

/* 头部动作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-pill);
  background: rgba(24, 214, 200, 0.08);
  color: var(--c-white);
  font-size: 14px;
  font-weight: 700;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.nav-toggle:hover {
  background: rgba(24, 214, 200, 0.18);
  border-color: var(--c-cyan);
}

.nav-toggle__box {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle__box span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--c-lime);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(2) {
  opacity: 0;
}

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

/* ---------- 08 Coord Rail ---------- */
.coord-rail {
  position: fixed;
  top: 50%;
  right: 14px;
  z-index: 70;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px 6px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-pill);
  background: rgba(7, 26, 47, 0.8);
  box-shadow: var(--shadow-1);
  transform: translateY(-50%);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.coord-rail__cap {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--c-slate);
  writing-mode: vertical-rl;
}

.coord-rail__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.coord-rail__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 74px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--c-white);
  writing-mode: vertical-rl;
  transition:
    background-color 0.18s var(--ease),
    color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.coord-rail__link:hover {
  background: rgba(24, 214, 200, 0.16);
  border-color: var(--line-cyan);
  color: var(--c-lime);
}

.coord-rail__link[aria-current="page"] {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-coal);
}

/* ---------- 09 Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 100px);
  padding-block: clamp(40px, 6vw, 76px) clamp(26px, 4vw, 40px);
  overflow: hidden;
  color: var(--c-white);
  background-color: var(--c-coal);
  border-top: 1px solid var(--line-cyan);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(115deg, transparent 41.6%, rgba(24, 214, 200, 0.08) 41.8%, rgba(24, 214, 200, 0.08) 42.6%, transparent 42.8%),
    linear-gradient(115deg, transparent 58.4%, rgba(183, 255, 60, 0.06) 58.6%, rgba(183, 255, 60, 0.06) 59.2%, transparent 59.4%),
    radial-gradient(760px 320px at 88% 0%, rgba(24, 214, 200, 0.12), transparent 70%);
}

.footer-shell {
  position: relative;
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(240px, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: start;
  padding-bottom: clamp(26px, 4vw, 42px);
  border-bottom: 1px solid var(--line);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand__mark {
  width: 34px;
  height: 34px;
  flex: none;
  background-image:
    linear-gradient(135deg, var(--c-cyan) 0 56%, transparent 56%),
    linear-gradient(315deg, var(--c-lime) 0 44%, transparent 44%);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.footer-brand__word {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.footer-brand__name {
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.footer-brand__tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
}

.footer-summary {
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(234, 246, 247, 0.8);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 52px);
  padding-block: clamp(28px, 4vw, 46px);
}

.footer-col__title {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
}

.footer-col__title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--c-lime);
}

.footer-col__list li + li { margin-top: 2px; }

.footer-col__list a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  font-size: 15px;
  color: rgba(234, 246, 247, 0.88);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.footer-col__list a:hover {
  color: var(--c-lime);
  transform: translateX(3px);
}

.footer-col__list a[aria-current="page"] {
  color: var(--c-lime);
  font-weight: 700;
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 14px clamp(24px, 4vw, 56px);
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--cut) 4px var(--cut) 4px;
  background: rgba(24, 214, 200, 0.05);
}

.footer-contact__item {
  max-width: 100%;
  font-size: 15px;
  word-break: break-word;
  color: var(--c-white);
}

.footer-contact__key {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  margin-top: clamp(22px, 3vw, 32px);
  padding-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--line);
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(234, 246, 247, 0.72);
}

.footer-note {
  max-width: 62ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-slate);
}

/* ---------- 10 Components ---------- */
.panel {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--cut) 4px var(--cut) 4px;
  background: linear-gradient(152deg, rgba(13, 43, 69, 0.92), rgba(7, 26, 47, 0.86));
  transition:
    transform 0.2s var(--ease),
    border-color 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}

.panel:hover {
  transform: translateY(-3px);
  border-color: var(--line-cyan);
  box-shadow: var(--shadow-2);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-pill);
  background: rgba(24, 214, 200, 0.08);
  color: var(--c-cyan);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.chip--lime {
  border-color: var(--line-lime);
  background: rgba(183, 255, 60, 0.12);
  color: var(--c-lime);
}

.chip--orange {
  border-color: rgba(255, 138, 61, 0.45);
  background: rgba(255, 138, 61, 0.12);
  color: var(--c-orange);
}

.chip--coral {
  border-color: rgba(255, 92, 92, 0.45);
  background: rgba(255, 92, 92, 0.12);
  color: var(--c-coral);
}

/* 图片容器基础规则 */
.media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--cut) 4px var(--cut) 4px;
  background-image:
    radial-gradient(120% 90% at 14% 8%, rgba(24, 214, 200, 0.32), transparent 62%),
    radial-gradient(100% 84% at 92% 86%, rgba(255, 138, 61, 0.24), transparent 60%),
    linear-gradient(136deg, var(--c-ink), var(--c-space));
}

.media > img,
.media > video,
.media > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--portrait { aspect-ratio: 3 / 4; }

.media--empty::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  mix-blend-mode: screen;
  background-image:
    linear-gradient(115deg, transparent 45.6%, rgba(183, 255, 60, 0.34) 45.9%, transparent 46.5%),
    linear-gradient(115deg, transparent 57.4%, rgba(24, 214, 200, 0.3) 57.7%, transparent 58.4%);
}

.media__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--c-white);
  background: linear-gradient(180deg, transparent, rgba(7, 26, 47, 0.86));
}

/* ---------- 11 Motion ---------- */
[data-reveal] {
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

html[data-js="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
}

html[data-js="on"] [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .panel:hover,
  .btn:hover,
  .footer-col__list a:hover,
  .brand:hover .brand__mark {
    transform: none;
  }
}

/* ---------- 12 Responsive ---------- */
@media (min-width: 1081px) and (max-width: 1260px) {
  .primary-nav__list a { padding: 0 9px; font-size: 14px; }
  .brand__line { display: none; }
  .header-actions .btn { padding: 0 16px; font-size: 14px; }
}

@media (max-width: 1180px) {
  .coord-rail {
    top: auto;
    right: 0;
    bottom: 0;
    left: 0;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 12px calc(8px + env(safe-area-inset-bottom, 0px));
    border: 0;
    border-top: 1px solid var(--line-cyan);
    border-radius: 0;
    background: rgba(7, 26, 47, 0.96);
    box-shadow: 0 -10px 26px rgba(2, 10, 20, 0.5);
    transform: none;
  }

  .coord-rail__cap { display: none; }

  .coord-rail__list {
    flex-direction: row;
    gap: 8px;
  }

  .coord-rail__link {
    width: auto;
    min-width: 84px;
    height: 42px;
    padding: 0 14px;
    font-size: 13px;
    letter-spacing: 0.08em;
    writing-mode: horizontal-tb;
  }

  body { padding-bottom: 72px; }
}

@media (max-width: 1080px) {
  .primary-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    padding: 10px;
    border: 1px solid var(--line-cyan);
    border-radius: 20px;
    background: linear-gradient(160deg, rgba(13, 43, 69, 0.98), rgba(7, 26, 47, 0.98));
    box-shadow: var(--shadow-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
  }

  .primary-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .primary-nav__list a {
    justify-content: flex-start;
    min-height: 48px;
    padding: 0 16px;
    border-radius: 14px;
    font-size: 15.5px;
  }

  .primary-nav__list a::after { display: none; }

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

@media (max-width: 860px) {
  .header-frame { padding: 8px 8px 8px 14px; }
  .header-frame::after { display: none; }
  .footer-top { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .footer-nav { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .footer-contact { flex-direction: column; gap: 12px; }
  .footer-base { flex-direction: column; align-items: flex-start; }
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  .brand__text { display: none; }
  .nav-toggle__label { display: none; }
  .nav-toggle { padding: 0 12px; }
  .header-actions .btn { padding: 0 14px; font-size: 13.5px; }
  .coord-rail__link { min-width: 72px; }
}

@media (max-width: 400px) {
  .header-actions .btn { display: none; }
}