/* =========================================================
   365游入口 · 共享样式表 /assets/site.css
   骨架：深空蓝画布 + 悬浮胶囊导航 + 控制台式页脚
   ========================================================= */

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

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

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

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

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

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

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

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

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #070E1F;
  --ink-deep: #050A16;
  --ink-2: #0E2A5A;
  --ink-3: #12315F;
  --panel: #0B1A34;

  --orange: #FF6A1A;
  --magenta: #FF2E88;
  --mint: #00E0C6;
  --cream: #F5EFE0;
  --ember: #E8452C;
  --mist: #A8B8D8;
  --gold: #C9A227;

  --line: rgba(168, 184, 216, .2);
  --line-soft: rgba(168, 184, 216, .1);

  --radius-s: 12px;
  --radius-m: 20px;
  --radius-l: 30px;
  --pill: 999px;

  --page-max: 1320px;
  --page-pad: 40px;
  --header-pad: 40px;

  --font-display: "Archivo Black", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "IBM Plex Mono", "Noto Sans Mono CJK SC", ui-monospace, SFMono-Regular, Menlo, Consolas, "Microsoft YaHei", monospace;
  --font-data: var(--font-body);

  --shadow-hud: 0 22px 60px rgba(3, 7, 16, .62);
}

/* ---------- 3. 基础排版（中文） ---------- */
body {
  min-height: 100vh;
  overflow-x: hidden;
  background-color: var(--ink);
  background-image:
    linear-gradient(rgba(168, 184, 216, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 184, 216, .05) 1px, transparent 1px);
  background-size: 100% 110px, 110px 100%;
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  letter-spacing: .01em;
  word-break: break-word;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 极淡扫描线，制造故障艺术质感，不干扰文字 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(7, 14, 31, .16) 0 2px,
    rgba(7, 14, 31, 0) 2px 5px
  );
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.01em;
}

p { max-width: 72ch; }

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

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  border-radius: 6px;
}

#main-content:focus-visible { outline-offset: -4px; }

::selection { background: var(--orange); color: var(--ink); }

/* ---------- 4. 布局容器 ---------- */
.shell {
  width: min(var(--page-max), calc(100% - var(--page-pad) * 2));
  margin-inline: auto;
}

.shell--narrow { width: min(900px, calc(100% - var(--page-pad) * 2)); }

.section { padding: clamp(52px, 7vw, 108px) 0; }

.band { position: relative; }

.band--panel {
  background-color: var(--panel);
  border-block: 1px solid var(--line);
}

.band--ink2 {
  background-color: var(--ink-2);
  border-block: 1px solid var(--line-soft);
}

.band--cream {
  background-color: var(--cream);
  color: var(--ink);
}

.band--cream h1,
.band--cream h2,
.band--cream h3 { color: var(--ink); }

.band--ember {
  background-color: var(--ember);
  color: var(--cream);
}

/* 跳转链接 */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  transform: translateY(-180%);
  padding: 12px 20px;
  border-radius: var(--pill);
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-data);
  font-weight: 600;
  transition: transform .2s ease;
}

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

/* ---------- 5. 字体层级 ---------- */
.display-xl {
  font-family: var(--font-display);
  font-size: clamp(48px, 9vw, 128px);
  line-height: .92;
  letter-spacing: -.03em;
}

.display-l {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.6vw, 84px);
  line-height: .98;
  letter-spacing: -.02em;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.4vw, 52px);
  line-height: 1.06;
  letter-spacing: -.015em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--orange);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--orange);
}

.lede {
  font-size: clamp(16px, 1.4vw, 20px);
  color: var(--mist);
  line-height: 1.75;
  max-width: 72ch;
}

.text-mint { color: var(--mint); }
.text-orange { color: var(--orange); }
.text-magenta { color: var(--magenta); }
.text-muted { color: var(--mist); }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-family: var(--font-data);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1;
  transition: transform .2s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--orange);
  color: var(--ink-deep);
  box-shadow: 0 14px 34px rgba(255, 106, 26, .28);
}

.btn--primary:hover { background: #ff7d38; }

.btn--ghost {
  border-color: var(--line);
  background: rgba(7, 14, 31, .5);
  color: var(--cream);
}

.btn--ghost:hover {
  border-color: var(--mint);
  color: var(--mint);
  background: rgba(0, 224, 198, .08);
}

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

/* ---------- 7. 面包屑 ---------- */
.crumbs {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
}

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

.crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(168, 184, 216, .5);
}

.crumbs a:hover { color: var(--orange); }

.crumbs [aria-current="page"] { color: var(--cream); }

/* ---------- 8. 网格 ---------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-12 { grid-column: span 12; }

/* ---------- 9. 图片容器（供页面阶段使用） ---------- */
.figure {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-radius: var(--radius-l);
  border: 1px solid var(--line);
  background: linear-gradient(145deg, var(--ink-2), var(--ink-deep));
}

.figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure--16x9 { aspect-ratio: 16 / 9; }
.figure--4x3 { aspect-ratio: 4 / 3; }
.figure--1x1 { aspect-ratio: 1 / 1; }
.figure--3x4 { aspect-ratio: 3 / 4; }

.figure--hud::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    rgba(0, 224, 198, .06) 0 1px,
    transparent 1px 6px
  );
}

.figure-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: .24em;
  color: rgba(168, 184, 216, .55);
  text-transform: uppercase;
}

.figure-caption {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 10. HUD 组件 ---------- */
.hud-panel {
  position: relative;
  padding: clamp(18px, 2.2vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--panel);
}

.hud-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(18px, 2.2vw, 30px);
  width: 54px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--orange);
}

.hud-title {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: .02em;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(38px, 5vw, 92px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cream);
}

.stat-value--outline {
  color: transparent;
  -webkit-text-stroke: 2px var(--orange);
}

.stat-label {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.meter {
  height: 8px;
  border-radius: var(--pill);
  background: rgba(168, 184, 216, .18);
  overflow: hidden;
}

.meter-fill {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: var(--mint);
  transition: width .8s cubic-bezier(.2, .7, .2, 1);
}

.meter-fill--orange { background: var(--orange); }
.meter-fill--magenta { background: var(--magenta); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: rgba(7, 14, 31, .55);
  font-family: var(--font-data);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--mist);
}

.chip--mint { color: var(--mint); border-color: rgba(0, 224, 198, .42); }
.chip--magenta { color: var(--magenta); border-color: rgba(255, 46, 136, .42); }
.chip--orange { color: var(--orange); border-color: rgba(255, 106, 26, .45); }
.chip--gold { color: var(--gold); border-color: rgba(201, 162, 39, .45); }

/* ---------- 11. 折叠内容组 ---------- */
.accordion { border-top: 1px solid var(--line); }

.accordion-item { border-bottom: 1px solid var(--line); }

.accordion-trigger {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 20px 4px;
  text-align: left;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.6vw, 22px);
  color: var(--cream);
  transition: color .2s ease;
}

.accordion-trigger::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 22px;
  line-height: 1;
  color: var(--orange);
  transition: transform .25s ease;
}

.accordion-trigger[aria-expanded="true"] { color: var(--mint); }

.accordion-trigger[aria-expanded="true"]::after {
  content: "+";
  transform: rotate(45deg);
  color: var(--mint);
}

.accordion-panel {
  padding: 0 4px 22px;
  color: var(--mist);
  max-width: 72ch;
}

.accordion-panel[hidden] { display: none; }

/* ---------- 12. 滚动显现 + 阅读进度 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s cubic-bezier(.2, .7, .2, 1);
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 120;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--orange), var(--magenta) 55%, var(--mint));
  pointer-events: none;
}

/* =========================================================
   13. 头部：悬浮胶囊导航
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 20px 0 12px;
  transition: padding .3s ease;
}

.site-header[data-shrunk="true"] { padding: 8px 0 6px; }

.header-rail {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  width: min(var(--page-max), calc(100% - var(--header-pad) * 2));
  margin-inline: auto;
  padding: 10px 12px 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: linear-gradient(100deg, rgba(14, 42, 90, .94), rgba(7, 14, 31, .9));
  box-shadow: var(--shadow-hud);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: padding .3s ease, border-radius .3s ease, background-color .3s ease;
}

.site-header[data-shrunk="true"] .header-rail {
  padding: 6px 12px 6px 14px;
  border-radius: var(--pill);
  border-color: rgba(255, 106, 26, .28);
}

/* 品牌标记 */
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 4px 8px 4px 4px;
  border-radius: var(--pill);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--orange);
  color: var(--ink-deep);
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: -.02em;
  box-shadow: 0 0 22px rgba(255, 106, 26, .45);
  transition: width .3s ease, height .3s ease, border-radius .3s ease;
}

.site-header[data-shrunk="true"] .brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  font-size: 13px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: .01em;
  color: var(--cream);
}

.brand-tagline {
  max-height: 22px;
  overflow: hidden;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--mist);
  transition: opacity .25s ease, max-height .25s ease;
}

.site-header[data-shrunk="true"] .brand-tagline {
  opacity: 0;
  max-height: 0;
}

/* 导航胶囊 */
.nav-capsule {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border: 1px solid var(--line-soft);
  border-radius: var(--pill);
  background: rgba(7, 14, 31, .58);
}

.nav-item { display: flex; }

.nav-link {
  display: inline-block;
  padding: 9px 15px;
  border-radius: var(--pill);
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--mist);
  white-space: nowrap;
  transition: color .2s ease, background-color .2s ease;
}

.nav-link:hover {
  color: var(--cream);
  background: rgba(255, 106, 26, .16);
}

.nav-link[aria-current="page"] {
  color: var(--ink-deep);
  background: var(--orange);
  box-shadow: 0 8px 20px rgba(255, 106, 26, .35);
}

/* 实用舱 */
.header-utils {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: auto;
}

.util-btn {
  padding: 11px 18px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-family: var(--font-data);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .05em;
  white-space: nowrap;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.util-btn--primary {
  background: var(--orange);
  color: var(--ink-deep);
  box-shadow: 0 10px 26px rgba(255, 106, 26, .3);
}

.util-btn--primary:hover { background: #ff7d38; }

.util-btn--ghost {
  border-color: rgba(0, 224, 198, .38);
  background: rgba(0, 224, 198, .07);
  color: var(--mint);
}

.util-btn--ghost:hover {
  border-color: var(--mint);
  background: rgba(0, 224, 198, .16);
}

/* 移动端按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(7, 14, 31, .6);
  color: var(--cream);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: .08em;
}

.nav-toggle-bars {
  width: 20px;
  height: 14px;
  background:
    linear-gradient(var(--cream), var(--cream)) 0 0 / 100% 2px no-repeat,
    linear-gradient(var(--cream), var(--cream)) 0 6px / 100% 2px no-repeat,
    linear-gradient(var(--cream), var(--cream)) 0 12px / 100% 2px no-repeat;
  transition: background .2s ease;
}

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

.site-header[data-open="true"] .nav-toggle-bars {
  background:
    linear-gradient(var(--orange), var(--orange)) 0 0 / 100% 2px no-repeat,
    linear-gradient(var(--orange), var(--orange)) 0 6px / 100% 2px no-repeat,
    linear-gradient(var(--orange), var(--orange)) 0 12px / 100% 2px no-repeat;
}

.nav-toggle-label { line-height: 1; }

/* =========================================================
   14. 页脚：控制台底栏
   ========================================================= */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  border-top: 3px solid var(--orange);
  background-color: #0A1730;
  color: var(--cream);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--magenta), var(--mint) 40%, transparent 85%);
  opacity: .8;
}

.footer-rail {
  width: min(var(--page-max), calc(100% - var(--page-pad) * 2));
  margin-inline: auto;
  padding: clamp(44px, 5vw, 72px) 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, minmax(120px, .8fr)) 1.35fr;
  gap: clamp(24px, 3vw, 48px);
}

.footer-brand { display: flex; flex-direction: column; gap: 18px; }

.footer-line {
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-dock {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.dock-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 13px;
  border: 1px dashed rgba(168, 184, 216, .35);
  border-radius: var(--pill);
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist);
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.dock-chip:hover {
  color: var(--ink-deep);
  background: var(--mint);
  border-color: var(--mint);
}

.footer-col { display: flex; flex-direction: column; gap: 14px; }

.footer-col-title {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cream);
}

.footer-col-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 8px;
  height: 8px;
  background: var(--orange);
  border-radius: 2px;
}

.footer-links { display: flex; flex-direction: column; gap: 2px; }

.footer-links a {
  display: inline-block;
  padding: 5px 0;
  font-size: 14.5px;
  color: var(--mist);
  transition: color .2s ease, transform .2s ease;
}

.footer-links a:hover {
  color: var(--mint);
  transform: translateX(4px);
}

.footer-contact { display: flex; flex-direction: column; gap: 10px; }

.footer-contact li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.6;
}

.footer-contact-key {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--orange);
}

.footer-contact-val { color: var(--mist); word-break: break-all; }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 28px;
  margin-top: clamp(32px, 4vw, 54px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist);
}

.footer-copy { margin: 0; }

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-legal-links a:hover { color: var(--mint); }

.footer-icp { color: rgba(168, 184, 216, .75); }

/* =========================================================
   15. 响应式
   ========================================================= */
@media (max-width: 1180px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col--contact { grid-column: span 3; }
}

@media (max-width: 1080px) {
  .nav-link { padding: 9px 11px; font-size: 13.5px; }
  .util-btn { padding: 10px 14px; font-size: 13px; }
}

@media (max-width: 960px) {
  :root { --page-pad: 20px; --header-pad: 16px; }

  .header-rail {
    flex-wrap: wrap;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 24px;
  }

  .site-header[data-shrunk="true"] .header-rail { padding: 8px 10px; }

  .brand-tagline { display: none; }

  .brand-mark { width: 38px; height: 38px; border-radius: 12px; font-size: 13px; }

  .brand-name { font-size: 17px; }

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

  .util-btn--ghost { display: none; }

  .nav-capsule {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 10px);
    display: none;
    justify-content: stretch;
  }

  .site-header[data-open="true"] .nav-capsule { display: flex; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 4px;
    padding: 10px;
    border-radius: 22px;
    border-color: rgba(255, 106, 26, .3);
    background: rgba(9, 18, 38, .98);
    box-shadow: var(--shadow-hud);
  }

  .nav-item { display: block; }

  .nav-link {
    display: block;
    padding: 14px 16px;
    border-radius: 14px;
    font-size: 16px;
  }

  .nav-link[aria-current="page"] {
    box-shadow: none;
  }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-col--contact { grid-column: span 2; }
}

@media (max-width: 900px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9 { grid-column: span 6; }
}

@media (max-width: 640px) {
  :root { --page-pad: 16px; --header-pad: 14px; }

  body { font-size: 16px; }

  .header-rail { gap: 8px; }

  .util-btn--primary { padding: 10px 14px; font-size: 12.5px; }

  .nav-toggle-label { display: none; }

  .nav-toggle { padding: 11px 13px; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-col--contact { grid-column: span 1; }

  .footer-base { justify-content: flex-start; }

  .btn { width: 100%; justify-content: center; }

  .footer-actions .btn { width: auto; }
}

/* =========================================================
   16. 无障碍：减少动效
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0ms !important;
  }

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

  .btn:hover,
  .footer-links a:hover {
    transform: none;
  }
}