/* ==========================================================================
   开全中心 · 共享样式（/assets/site.css）
   深海蓝基底 / 荧光青路径 / 珊瑚橙异常标记 / 奶油纸面正文
   ========================================================================== */

/* ---------- 1. reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

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

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

button, input, select, textarea { font: inherit; color: 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; height: 1px; background: rgba(168, 184, 200, .3); }

/* ---------- 2. 设计变量 ---------- */
:root {
  --deep-blue: #0B2A4A;
  --night-blue: #061827;
  --cyan: #00E5C7;
  --coral: #FF6B4A;
  --cream: #F6F1E7;
  --ink: #1C1A17;
  --mist: #A8B8C8;
  --mint: #B9FFF2;
  --peach: #FFE2DA;

  --glass: rgba(255, 255, 255, .10);
  --glass-strong: rgba(255, 255, 255, .18);
  --line-soft: rgba(168, 184, 200, .28);
  --line-cyan: rgba(0, 229, 199, .38);

  --radius-s: 10px;
  --radius-m: 16px;
  --radius-l: 24px;
  --page-max: 1180px;

  --font-head: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC",
    "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC",
    "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;

  --shadow-card: 0 26px 60px -34px rgba(6, 24, 39, .9);
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. 基础排印 ---------- */
body {
  background: var(--deep-blue);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.01em;
}

h1 { font-size: clamp(2rem, 5.2vw, 3.4rem); }
h2 { font-size: clamp(1.8rem, 4vw, 3.4rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.05rem; }

strong { font-weight: 700; }

::selection { background: var(--cyan); color: #04211d; }

/* ---------- 4. 通用布局 ---------- */
.wrap {
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

.wrap--narrow { max-width: 820px; }

.section { padding-block: clamp(48px, 7vw, 96px); }
.section--tight { padding-block: clamp(28px, 4vw, 56px); }

.stack { display: grid; gap: clamp(14px, 2vw, 22px); }

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); }

/* 奶油纸面分区：同时切换该区内的标签、眉标题与焦点色 */
.surface-cream {
  background: var(--cream);
  color: var(--ink);
}

.surface-cream .kicker { color: #0a6a5f; }
.surface-cream .path-marker { color: #5b6b78; }
.surface-cream .path-marker::before {
  background: #0a6a5f;
  box-shadow: 0 0 0 4px rgba(10, 106, 95, .14);
}
.surface-cream .tag--cyan {
  background: rgba(0, 229, 199, .22);
  color: #02564c;
  border-color: rgba(2, 86, 76, .32);
}
.surface-cream :focus-visible { outline-color: #0a6a5f; }

/* ---------- 5. 内容组件 ---------- */
.panel {
  background: var(--cream);
  color: var(--ink);
  border-radius: var(--radius-l);
  padding: clamp(20px, 3vw, 34px);
  box-shadow: var(--shadow-card);
}

.panel--peach {
  background: linear-gradient(160deg, var(--cream), var(--peach));
}

.glass {
  background: var(--glass);
  border: 1px solid var(--glass-strong);
  border-radius: var(--radius-l);
  padding: clamp(18px, 2.6vw, 30px);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.glass--solid { background: var(--glass-strong); }

.section-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.kicker {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .24em;
  color: var(--cyan);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1.6;
  border: 1px solid transparent;
}

.tag--cyan {
  background: rgba(0, 229, 199, .14);
  color: var(--mint);
  border-color: rgba(0, 229, 199, .45);
}

.tag--coral {
  background: rgba(255, 107, 74, .18);
  color: #FFD9CE;
  border-color: rgba(255, 107, 74, .55);
}

.tag--mist {
  background: rgba(168, 184, 200, .16);
  color: var(--mist);
  border-color: var(--line-soft);
}

.tag--ink {
  background: var(--deep-blue);
  color: var(--mint);
}

/* 面包屑 */
.crumbs { padding-block: 14px; }

.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  color: var(--mist);
}

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

.crumbs__list li + li::before {
  content: "/";
  color: rgba(168, 184, 200, .55);
}

.crumbs__list a:hover { color: var(--cyan); }

.crumbs__list [aria-current="page"] {
  color: var(--cream);
  font-weight: 700;
}

/* 路径隐喻图形 */
.pathline {
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(0, 229, 199, .15) 60%, rgba(0, 229, 199, 0) 100%);
}

.pathline--coral {
  background: linear-gradient(90deg, var(--coral) 0%, rgba(255, 107, 74, 0) 100%);
}

.path-marker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--mist);
}

.path-marker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 199, .15);
}

/* 正文排印 */
.prose {
  max-width: 72ch;
  color: var(--ink);
  line-height: 1.75;
}

.prose > * + * { margin-top: 1.1em; }

.prose h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); margin-top: 1.6em; }
.prose h3 { margin-top: 1.4em; }

.prose ul,
.prose ol {
  display: grid;
  gap: 8px;
  padding-left: 1.2em;
  list-style: disc;
}

.prose ol { list-style: decimal; }

.prose a {
  color: #0a6a5f;
  border-bottom: 1px solid rgba(10, 106, 95, .4);
}

.prose--light { color: rgba(246, 241, 231, .88); }
.prose--light a { color: var(--cyan); border-bottom-color: rgba(0, 229, 199, .5); }

/* 坐标索引（隐私中心、使用说明） */
.coord-index {
  display: grid;
  grid-template-columns: minmax(0, 180px) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.coord-index__nav ul {
  display: grid;
  gap: 4px;
  font-size: .8rem;
  letter-spacing: .06em;
}

.coord-index__nav a {
  display: block;
  padding: 6px 0 6px 14px;
  border-left: 1px solid var(--line-soft);
  color: var(--mist);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.coord-index__nav a:hover { color: var(--cyan); border-left-color: var(--cyan); }

.coord-index__nav a[aria-current="page"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  font-weight: 700;
}

/* 图片容器基础规则（页面阶段放图） */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-l);
  border: 1px solid var(--glass-strong);
  background:
    radial-gradient(120% 120% at 12% 0%, rgba(0, 229, 199, .22), rgba(0, 229, 199, 0) 55%),
    linear-gradient(160deg, #0B2A4A, #061827);
}

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

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

.media-frame--empty::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 48px 48px;
}

.media-frame__glow {
  position: absolute;
  inset: auto -10% -40% -10%;
  height: 70%;
  pointer-events: none;
  background: radial-gradient(60% 60% at 50% 100%, rgba(0, 229, 199, .28), rgba(0, 229, 199, 0));
}

.media-frame__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(6, 24, 39, .72);
  color: var(--mint);
  font-size: .72rem;
  letter-spacing: .14em;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.2;
  white-space: nowrap;
  transition: background .22s var(--ease), color .22s var(--ease),
    border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
}

.btn--primary {
  background: var(--cyan);
  color: #04211d;
  box-shadow: 0 10px 26px -16px rgba(0, 229, 199, .95);
}

.btn--primary:hover {
  background: var(--mint);
  transform: translateY(-1px);
  box-shadow: 0 14px 30px -14px rgba(0, 229, 199, .85);
}

.btn--ghost {
  border-color: rgba(168, 184, 200, .5);
  color: var(--cream);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0, 229, 199, .08);
}

.btn--alert {
  background: var(--coral);
  color: #2a0d05;
}

.btn--alert:hover { background: #ff8567; transform: translateY(-1px); }

/* ---------- 7. 焦点与动效协议 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

[data-js="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}

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

[data-js="on"] [data-reveal][data-delay="1"] { transition-delay: .08s; }
[data-js="on"] [data-reveal][data-delay="2"] { transition-delay: .16s; }
[data-js="on"] [data-reveal][data-delay="3"] { transition-delay: .24s; }
[data-js="on"] [data-reveal][data-delay="4"] { transition-delay: .32s; }

/* ---------- 8. 页头框架导航 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -70px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 0 0 12px 12px;
  background: var(--cyan);
  color: #04211d;
  font-size: .85rem;
  font-weight: 700;
  transition: top .2s var(--ease);
}

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

.site-frame {
  position: sticky;
  top: 0;
  z-index: 60;
  color: var(--cream);
  background: linear-gradient(180deg, rgba(6, 24, 39, .98), rgba(11, 42, 74, .96));
  border-bottom: 1px solid var(--line-cyan);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.frame-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 34px);
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: 12px clamp(16px, 4vw, 40px);
  min-height: 72px;
}

.frame-corner {
  position: absolute;
  top: 7px;
  width: 14px;
  height: 14px;
  border: 1px solid rgba(0, 229, 199, .55);
  pointer-events: none;
}

.frame-corner--tl { left: 7px; border-right: 0; border-bottom: 0; }
.frame-corner--tr { right: 7px; border-left: 0; border-bottom: 0; }

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

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(150deg, var(--cyan), #0fae9b);
  color: #04211d;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 900;
  box-shadow: 0 8px 20px -10px rgba(0, 229, 199, .95);
}

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

.brand__name {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: .02em;
}

.brand__slogan {
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--cyan);
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-nav__title { display: none; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 10px 2px;
  font-size: .95rem;
  font-weight: 600;
  color: rgba(246, 241, 231, .82);
  transition: color .2s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 4px;
  height: 2px;
  background: var(--cyan);
  transition: right .28s var(--ease);
}

.site-nav__link:hover { color: var(--cream); }
.site-nav__link:hover::after { right: 0; }

.site-nav__link[aria-current="page"] { color: var(--cyan); }
.site-nav__link[aria-current="page"]::after { right: 0; }

.site-nav__actions { display: none; }

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

.nav-toggle { display: none; }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 20px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}

.nav-toggle__label { letter-spacing: .14em; }

.frame-legend {
  display: flex;
  align-items: center;
  gap: 18px;
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: 0 clamp(16px, 4vw, 40px) 10px;
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--mist);
}

.frame-legend__rail {
  position: relative;
  flex: 0 0 auto;
  width: 64px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), rgba(0, 229, 199, 0));
}

.frame-legend__rail i {
  position: absolute;
  right: -3px;
  top: -3px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 199, .18);
}

.frame-legend__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
}

.frame-legend__list li {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.frame-legend__list li::before {
  content: "";
  width: 5px;
  height: 5px;
  border: 1px solid var(--coral);
  transform: rotate(45deg);
}

/* 滚动进度（由 JS 注入 .site-frame 内） */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  z-index: 3;
  background: rgba(168, 184, 200, .16);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--coral));
  transition: width .12s linear;
}

/* ---------- 9. 页脚 ---------- */
.site-foot {
  position: relative;
  background: var(--night-blue);
  color: var(--cream);
  border-top: 1px solid var(--line-cyan);
}

.site-foot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), rgba(0, 229, 199, .12) 45%, var(--coral));
  opacity: .85;
}

.site-foot__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 34px);
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 72px) clamp(16px, 4vw, 40px) clamp(20px, 3vw, 32px);
}

.foot-brand {
  display: grid;
  gap: 6px;
  align-content: start;
}

.foot-brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(150deg, var(--cyan), #0fae9b);
  color: #04211d;
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 900;
}

.foot-brand__name {
  margin-top: 8px;
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 900;
}

.foot-brand__slogan {
  font-size: .8rem;
  letter-spacing: .14em;
  color: var(--cyan);
}

.foot-brand__meta {
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--mist);
}

.foot-col { min-width: 0; }

.foot-col__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-family: var(--font-body);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--mist);
}

.foot-col__title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--cyan);
}

.foot-col__list { display: grid; gap: 2px; }

.foot-link {
  display: inline-block;
  padding: 6px 0;
  font-size: .92rem;
  color: rgba(246, 241, 231, .78);
  transition: color .2s var(--ease), transform .2s var(--ease);
}

.foot-link:hover {
  color: var(--cyan);
  transform: translateX(4px);
}

.foot-link--strong {
  color: #FFD2C6;
  font-weight: 700;
}

.foot-col--alert {
  padding: 18px 16px 20px;
  border-radius: var(--radius-m);
  border: 1px solid rgba(255, 107, 74, .45);
  background: linear-gradient(165deg, rgba(255, 107, 74, .18), rgba(255, 107, 74, .04));
}

.foot-col--alert .foot-col__title { color: #FFC9BC; }
.foot-col--alert .foot-col__title::before { background: var(--coral); }

.copy-chip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  width: 100%;
  margin-top: 6px;
  padding: 8px 10px;
  border: 1px dashed rgba(168, 184, 200, .35);
  border-radius: var(--radius-s);
  font-size: .8rem;
  text-align: left;
  color: rgba(246, 241, 231, .85);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.copy-chip:hover {
  border-color: var(--cyan);
  background: rgba(0, 229, 199, .08);
}

.copy-chip__key {
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--mist);
}

.copy-chip__val {
  font-variant-numeric: tabular-nums;
  word-break: break-all;
}

.copy-chip__tag {
  margin-left: auto;
  padding: 2px 8px;
  border: 1px solid rgba(0, 229, 199, .45);
  border-radius: 999px;
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--cyan);
}

.copy-chip[data-copied="true"] {
  border-color: var(--cyan);
  background: rgba(0, 229, 199, .12);
}

.copy-chip[data-copied="true"] .copy-chip__tag {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04211d;
}

.copy-chip[data-copied="false"] .copy-chip__tag {
  border-color: rgba(255, 107, 74, .6);
  color: var(--coral);
}

.foot-addr {
  padding-top: 6px;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--mist);
}

.site-foot__base {
  display: grid;
  gap: 12px;
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: 18px clamp(16px, 4vw, 40px) 30px;
  border-top: 1px solid rgba(168, 184, 200, .2);
}

.foot-note {
  max-width: 78ch;
  font-size: .76rem;
  line-height: 1.7;
  color: var(--mist);
}

.foot-base__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--mist);
}

.foot-icp { color: var(--mist); }
.foot-copy { color: rgba(168, 184, 200, .75); }

/* ---------- 10. 响应式 ---------- */
@media (min-width: 640px) {
  .site-foot__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .site-foot__inner {
    grid-template-columns: 1.2fr .95fr 1.05fr 1fr 1.25fr;
  }
}

@media (min-width: 1280px) {
  body::before,
  body::after {
    content: "";
    position: fixed;
    top: 0;
    bottom: 0;
    width: 1px;
    z-index: 5;
    pointer-events: none;
    background: linear-gradient(180deg,
      rgba(0, 229, 199, .3),
      rgba(0, 229, 199, 0) 32%,
      rgba(255, 107, 74, 0) 68%,
      rgba(255, 107, 74, .22));
  }
  body::before { left: 14px; }
  body::after { right: 14px; }
}

@keyframes nav-drop {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 980px) {
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    justify-content: flex-start;
    max-height: min(74vh, 560px);
    overflow-y: auto;
    padding: 18px clamp(16px, 5vw, 40px) 26px;
    background: linear-gradient(180deg, rgba(6, 24, 39, .99), rgba(11, 42, 74, .99));
    border-bottom: 1px solid var(--line-cyan);
    box-shadow: 0 34px 60px -34px rgba(0, 0, 0, .95);
    animation: nav-drop .26s var(--ease) both;
  }

  .site-frame[data-open="true"] .site-nav,
  .site-nav[data-open="true"] { display: block; }

  .site-nav__title {
    display: block;
    margin-bottom: 12px;
    font-size: .7rem;
    letter-spacing: .26em;
    color: var(--mist);
  }

  .site-nav__list {
    display: grid;
    gap: 2px;
  }

  .site-nav__link {
    display: block;
    padding: 12px 4px;
    font-size: 1rem;
    border-bottom: 1px dashed rgba(168, 184, 200, .2);
  }

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

  .site-nav__link[aria-current="page"] {
    padding-left: 14px;
    border-left: 2px solid var(--cyan);
  }

  .site-nav__actions {
    display: flex;
    gap: 10px;
    margin-top: 18px;
  }

  .site-nav__actions .btn { flex: 1 1 auto; }

  .frame-actions { display: none; }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    padding: 9px 14px;
    border: 1px solid var(--line-soft);
    border-radius: 999px;
    color: var(--cream);
    font-size: .8rem;
    transition: border-color .2s var(--ease), color .2s var(--ease);
  }

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

  .site-frame[data-open="true"] .nav-toggle {
    border-color: var(--cyan);
    color: var(--cyan);
  }

  .site-frame[data-open="true"] .nav-toggle__bars i:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .site-frame[data-open="true"] .nav-toggle__bars i:nth-child(2) {
    opacity: 0;
  }

  .site-frame[data-open="true"] .nav-toggle__bars i:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .frame-legend { display: none; }
}

@media (max-width: 760px) {
  .coord-index { grid-template-columns: 1fr; }
  .frame-bar { min-height: 64px; }
  .brand__slogan { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  html { scroll-behavior: auto; }

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