/* ============================================================
   环亚体育 · 共享外壳样式  /assets/site.css
   深海蓝场域 / 熔岩橙标记 / 荧光青轨迹
   ============================================================ */

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

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

body { margin: 0; min-height: 100vh; }

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

button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }

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

ul, ol { list-style: none; margin: 0; padding: 0; }
dl, dt, dd { margin: 0; }
h1, h2, h3, h4, h5, h6, p, figure, blockquote { margin: 0; }
h1, h2, h3, h4, h5, h6 { font-size: inherit; font-weight: inherit; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色板 */
  --deep: #0B1B2E;
  --midnight: #061020;
  --graphite: #14263C;
  --lava: #FF6A2B;
  --lava-deep: #B8400F;
  --cyan: #2BE3C8;
  --mist: #E8F1F8;
  --steel: #8FA3B8;
  --red: #FF4D4D;
  --white: #FFFFFF;

  --text: #E8F1F8;
  --text-soft: #D3E0EC;
  --text-dim: #8FA3B8;
  --hair: rgba(143, 163, 184, 0.18);
  --hair-soft: rgba(143, 163, 184, 0.10);

  /* 字体 */
  --font-head: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: system-ui, -apple-system, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 尺度 */
  --shell: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --gap-s: 20px;
  --gap-m: 40px;
  --gap-l: 64px;
  --gap-xl: 96px;
  --cut: 18px;

  /* 切角 */
  --cut-panel: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  --cut-btn: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--deep);
  background-image:
    linear-gradient(rgba(143, 163, 184, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 163, 184, 0.055) 1px, transparent 1px);
  background-size: 88px 88px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.012em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; }

::selection { background: var(--lava); color: #08111D; }

#main-content { display: block; }

.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

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

.clip-btn:focus-visible,
.btn--primary:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan);
}

/* ---------- 4. 容器与节奏 ---------- */
.container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--gap-l); }
.section--tight { padding-block: var(--gap-m); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: var(--gap-m);
}

.section__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--white);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-num);
  font-size: 0.72rem;
  line-height: 1;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
}

.eyebrow::before {
  content: "";
  display: block;
  width: 26px;
  height: 2px;
  background: var(--lava);
}

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, rgba(43, 227, 200, 0.55), rgba(143, 163, 184, 0.14) 46%, transparent);
}

.slash {
  display: block;
  width: 76px;
  height: 6px;
  margin-top: 18px;
  background: repeating-linear-gradient(115deg, var(--lava) 0 6px, transparent 6px 15px);
  opacity: 0.85;
}

[data-section] {
  position: relative;
}

[data-section]::before {
  content: "";
  position: absolute;
  inset-inline-start: -16px;
  top: 0.4em;
  width: 3px;
  height: 1.5em;
  background: rgba(143, 163, 184, 0.28);
  transform: scaleY(0.45);
  transform-origin: top;
  transition: background-color .3s ease, transform .3s ease;
}

[data-section].is-current::before {
  background: var(--cyan);
  transform: scaleY(1);
}

/* ---------- 5. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.btn--primary {
  background: var(--lava);
  color: #0A1524;
  clip-path: var(--cut-btn);
}

.btn--primary:hover { background: #FF8149; }

.btn--ghost {
  border-color: rgba(143, 163, 184, 0.42);
  color: var(--mist);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn--quiet {
  background: rgba(43, 227, 200, 0.12);
  border-color: rgba(43, 227, 200, 0.38);
  color: var(--cyan);
}

.btn--quiet:hover { background: rgba(43, 227, 200, 0.22); }

/* ---------- 6. 通用面板 ---------- */
.panel {
  position: relative;
  background: var(--graphite);
  padding: clamp(22px, 3vw, 34px);
}

.panel--cut { clip-path: var(--cut-panel); }

.panel--edge { box-shadow: inset 0 0 0 1px var(--hair); }

/* ---------- 7. 标签 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  font-family: var(--font-num);
  font-size: 0.72rem;
  line-height: 1.4;
  letter-spacing: 0.08em;
  border: 1px solid rgba(143, 163, 184, 0.3);
  background: rgba(20, 38, 60, 0.6);
  color: var(--mist);
  white-space: nowrap;
}

.chip--hot { border-color: rgba(255, 106, 43, 0.5); color: var(--lava); }
.chip--cool { border-color: rgba(43, 227, 200, 0.42); color: var(--cyan); }

/* ---------- 8. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 14px;
  font-family: var(--font-num);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.crumbs a:hover { color: var(--cyan); }
.crumbs__sep { color: rgba(143, 163, 184, 0.5); }
.crumbs [aria-current="page"] { color: var(--mist); }

/* ---------- 9. 正文块 ---------- */
.prose {
  max-width: 70ch;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-soft);
}

.prose p + p { margin-top: 1.2em; }
.prose h2, .prose h3 {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-top: 1.6em;
}
.prose h2 { font-size: clamp(1.3rem, 2vw, 1.6rem); }
.prose h3 { font-size: 1.15rem; }
.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.prose strong { color: var(--white); font-weight: 700; }
.prose ul, .prose ol { margin-top: 1em; display: grid; gap: 0.5em; }
.prose ul { padding-left: 1.1em; list-style: none; }
.prose ul li { position: relative; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: -1.1em;
  top: 0.72em;
  width: 6px;
  height: 6px;
  background: var(--lava);
}
.prose ol { padding-left: 1.4em; list-style: decimal; }

/* ---------- 10. 栅格 ---------- */
.grid { display: grid; gap: var(--gap-m); }
.grid--7-5 { grid-template-columns: 7fr 5fr; }
.grid--8-4 { grid-template-columns: 8fr 4fr; }
.grid--halves { grid-template-columns: 1fr 1fr; }

/* ---------- 11. 图片容器（页面阶段放 <img class="media-frame__img">） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--graphite);
  clip-path: var(--cut-panel);
  aspect-ratio: 16 / 9;
}

.media-frame__img,
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06) brightness(0.94);
}

.media-frame__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 14px 18px;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--mist);
  background: linear-gradient(0deg, rgba(6, 16, 32, 0.94), rgba(6, 16, 32, 0));
}

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

/* ---------- 12. 跳转与进度 ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: -9999px;
  z-index: 200;
  padding: 12px 20px;
  background: var(--lava);
  color: #08111D;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
}

.skip-link:focus { left: 12px; top: 12px; }

.progress-rail {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 150;
  background: rgba(143, 163, 184, 0.16);
  pointer-events: none;
}

.progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--lava));
}

/* ---------- 13. 页头 ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 120;
  background: linear-gradient(180deg, rgba(6, 16, 32, 0.99) 0%, rgba(6, 16, 32, 0.95) 100%);
  border-bottom: 1px solid var(--hair);
}

.masthead {
  overflow: hidden;
  max-height: 130px;
  border-bottom: 1px solid var(--hair-soft);
  transition: max-height .34s cubic-bezier(.4, 0, .2, 1), opacity .24s ease, padding .34s ease;
}

.site-head.is-stuck .masthead {
  max-height: 0;
  opacity: 0;
  border-color: transparent;
}

.masthead__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding-block: clamp(14px, 2.4vw, 24px);
}

.masthead__wing {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.masthead__wing--start { justify-content: flex-start; }
.masthead__wing--end { justify-content: flex-end; }

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  justify-self: center;
  min-width: 0;
}

.brand__mark {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  background: conic-gradient(from 205deg, var(--cyan), var(--lava) 55%, var(--cyan));
  clip-path: polygon(50% 0, 100% 26%, 100% 74%, 50% 100%, 0 74%, 0 26%);
}

.brand__text { display: block; min-width: 0; text-align: left; }

.brand__name {
  display: block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  line-height: 1.08;
  letter-spacing: 0.14em;
  color: var(--white);
}

.brand__sub {
  display: block;
  margin-top: 4px;
  font-family: var(--font-num);
  font-size: 0.58rem;
  line-height: 1.2;
  letter-spacing: 0.32em;
  color: var(--steel);
  text-transform: uppercase;
  white-space: nowrap;
}

.brand--foot .brand__name { font-size: 1.15rem; letter-spacing: 0.12em; }
.brand--foot .brand__sub { font-size: 0.55rem; letter-spacing: 0.26em; }
.brand--foot .brand__mark { width: 28px; height: 28px; }

/* 报头小按钮 */
.ghost-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  font-family: var(--font-num);
  font-size: 0.74rem;
  line-height: 1.2;
  letter-spacing: 0.14em;
  white-space: nowrap;
  color: var(--mist);
  background: rgba(20, 38, 60, 0.6);
  border: 1px solid rgba(143, 163, 184, 0.34);
  clip-path: var(--cut-btn);
  transition: color .2s ease, background-color .2s ease, border-color .2s ease;
}

.ghost-btn::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--cyan);
  flex: 0 0 auto;
}

.ghost-btn--rail::before { background: var(--lava); }

.ghost-btn:hover { color: var(--white); border-color: var(--cyan); }
.ghost-btn:focus-visible { outline: none; box-shadow: inset 0 0 0 2px var(--cyan); }

/* 导航带 */
.nav-dock {
  position: relative;
  display: flex;
  justify-content: center;
}

.nav-dock__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
}

.nav { display: flex; justify-content: center; }

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(6px, 1.6vw, 28px);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 15px 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  white-space: nowrap;
  transition: color .2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 9px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .28s ease;
}

.nav-link:hover { color: var(--white); }
.nav-link:hover::after { transform: scaleX(0.55); }

.nav-link[aria-current="page"] { color: var(--white); }
.nav-link[aria-current="page"]::after { transform: scaleX(1); }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  font-family: var(--font-num);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--mist);
  border: 1px solid rgba(143, 163, 184, 0.34);
  background: rgba(20, 38, 60, 0.6);
}

.nav-toggle__bars {
  display: block;
  width: 16px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: var(--cyan);
  margin-bottom: 3px;
}

.nav-toggle__bars i:last-child { margin-bottom: 0; }

/* ---------- 14. 侧边数据条 ---------- */
.data-rail {
  position: fixed;
  right: 0;
  top: 40%;
  z-index: 110;
  width: 190px;
  background: rgba(6, 16, 32, 0.95);
  border: 1px solid rgba(143, 163, 184, 0.24);
  border-right: 0;
  clip-path: polygon(18px 0, 100% 0, 100% 100%, 18px 100%, 0 calc(100% - 18px), 0 18px);
  transition: transform .3s ease, opacity .3s ease;
}

.data-rail[data-open="false"] {
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
}

.data-rail__inner { padding: 18px 16px; }

.data-rail__flag {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 15px;
  font-family: var(--font-num);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.data-rail__flag i {
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  animation: railPulse 2.2s ease-in-out infinite;
}

@keyframes railPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(43, 227, 200, 0.55); }
  50% { opacity: .55; box-shadow: 0 0 0 6px rgba(43, 227, 200, 0); }
}

.data-rail__list { display: grid; gap: 13px; }

.data-rail__row {
  display: grid;
  gap: 2px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hair-soft);
}

.data-rail__row:last-child { border-bottom: 0; padding-bottom: 0; }

.data-rail__label {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.data-rail__value {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 1.12rem;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--white);
}

.data-rail__value--hot { color: var(--lava); }
.data-rail__value--cool { color: var(--cyan); }

.data-rail__link {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-num);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
  border-bottom: 1px solid rgba(43, 227, 200, 0.42);
  padding-bottom: 2px;
}

.data-rail__link:hover { color: var(--white); border-color: var(--white); }

/* ---------- 15. 快捷登录面板 ---------- */
.login-pop {
  position: fixed;
  right: var(--gutter);
  bottom: var(--gutter);
  z-index: 140;
  width: min(324px, calc(100vw - 32px));
  padding: 24px;
  background: var(--midnight);
  border: 1px solid rgba(43, 227, 200, 0.32);
  box-shadow: 0 34px 70px -34px rgba(0, 0, 0, 0.95);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.login-pop[hidden] { display: none; }

.login-pop__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--white);
  margin-bottom: 12px;
}

.login-pop__title::after {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  margin-top: 10px;
  background: var(--lava);
}

.login-pop__text {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-dim);
  margin-bottom: 20px;
}

.login-pop__cta { width: 100%; }

/* ---------- 16. 页脚 ---------- */
.site-foot {
  position: relative;
  margin-top: var(--gap-xl);
  padding-block: var(--gap-l) 28px;
  background: var(--midnight);
  border-top: 1px solid var(--hair);
}

.site-foot::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--lava) 55%, transparent);
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1.6fr;
  gap: 44px 32px;
  align-items: start;
}

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

.foot-col__title {
  margin-bottom: 16px;
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--steel);
}

.foot-list { display: grid; gap: 10px; }

.foot-link {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--mist);
  transition: color .2s ease, padding-left .2s ease;
}

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

.foot-note {
  margin-top: 16px;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.foot-contact { display: grid; gap: 15px; }

.foot-contact__row { display: grid; gap: 3px; }

.foot-contact__key {
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.foot-contact__val {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--mist);
  word-break: break-word;
}

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--hair-soft);
}

.foot-legal__line {
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--steel);
}

/* ---------- 17. 响应式 ---------- */
@media (max-width: 1180px) {
  .foot-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .foot-col--contact { grid-column: 1 / -1; }
  .foot-contact { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 28px; }
}

@media (max-width: 1024px) {
  .data-rail { display: none; }
  .ghost-btn--rail { display: none; }
  .grid--7-5, .grid--8-4 { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  :root { --gap-l: 52px; --gap-xl: 68px; }
  .grid--halves { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .masthead__inner { grid-template-columns: auto 1fr auto; gap: 10px; }
  .masthead__wing--start { justify-content: flex-start; }
  .brand { justify-self: center; }
  .brand__sub { display: none; }

  .nav-dock__inner { justify-content: flex-start; min-height: 50px; }

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

  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: block;
    background: var(--midnight);
    border-top: 1px solid var(--hair);
    border-bottom: 1px solid var(--hair);
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s cubic-bezier(.4, 0, .2, 1);
  }

  .nav[data-open="true"] {
    max-height: 78vh;
    overflow-y: auto;
  }

  .nav-list {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 0;
    padding: 4px 0 10px;
  }

  .nav-link {
    display: block;
    padding: 15px 14px;
    border-bottom: 1px solid var(--hair-soft);
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] { color: var(--cyan); }

  .nav-link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 3px;
    height: 18px;
    background: var(--cyan);
    transform: translateY(-50%);
  }

  .data-rail { display: none; }

  .login-pop { right: 16px; bottom: 16px; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .ghost-btn { padding: 8px 11px; font-size: 0.7rem; letter-spacing: 0.1em; }
  .brand__name { letter-spacing: 0.1em; }
  .foot-grid { grid-template-columns: 1fr; gap: 34px; }
  .foot-contact { grid-template-columns: 1fr; }
  .foot-legal { margin-top: 34px; }
  [data-section]::before { inset-inline-start: -10px; }
  .section__head { align-items: flex-start; }
}

/* ---------- 18. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

  .progress-bar { transition: none !important; }
}