/* =========================================================
   传奇电子 · 共享样式表 /assets/site.css
   深空墨基底 · 电光青/电子紫/暖金强调 · 切角堆叠面板
   ========================================================= */

:root {
  --ink: #060B1A;
  --panel: #0C1630;
  --line: #16224A;
  --cyan: #19E3D6;
  --violet: #7A5CFF;
  --gold: #F2B441;
  --white: #E8EEF9;
  --mist: #8A97B8;
  --glow: #B9FFF7;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --wrap: 1280px;
  --measure: 40em;
  --cut: 14px;

  --t-fast: 180ms;
  --t-mid: 240ms;
  --t-slow: 480ms;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 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, figure, blockquote, dl, dd {
  margin: 0;
}

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

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

button, input, label, select, textarea {
  font: inherit;
  color: inherit;
}

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

/* ---------- 中文排版基础 ---------- */
body {
  font-family: var(--font-sans);
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.85;
  color: var(--white);
  background-color: var(--ink);
  background-image:
    linear-gradient(rgba(138, 151, 184, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(138, 151, 184, .05) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.16;
}

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

::selection {
  background: rgba(25, 227, 214, .28);
  color: #fff;
}

/* ---------- 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 44px);
}

.section {
  position: relative;
  padding-block: clamp(44px, 7vw, 88px);
}

.section__head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.section__title {
  font-size: clamp(26px, 3.4vw, 44px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.12;
}

.section__desc {
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.9;
  color: rgba(232, 238, 249, .82);
  max-width: var(--measure);
}

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.grid--2,
.grid--3 {
  grid-template-columns: 1fr;
}

@media (min-width: 760px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .grid--offset > *:nth-child(even) { margin-top: 28px; }
}

.stack {
  display: grid;
  gap: var(--stack-gap, 18px);
}

.prose {
  max-width: var(--measure);
}

.prose p { margin-bottom: 1.1em; }

.cut {
  clip-path: polygon(
    var(--cut) 0, 100% 0,
    100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%,
    0 100%, 0 var(--cut)
  );
}

/* ---------- 文本工具 ---------- */
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .01em;
  font-size: .88em;
}

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.lede {
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.9;
  color: rgba(232, 238, 249, .86);
  max-width: var(--measure);
}

.muted { color: var(--mist); }

/* ---------- 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 10px 20px;
  background: var(--cyan);
  color: #04121A;
  font-weight: 700;
  font-size: 14px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: top var(--t-fast) var(--ease);
}

.skip-link:focus {
  top: 10px;
}

.header-upper {
  background: linear-gradient(90deg, #060B1A 0%, #0A1330 52%, #060B1A 100%);
  border-bottom: 1px solid rgba(22, 34, 74, .9);
}

.header-upper__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 46px;
  padding-block: 3px;
}

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

.brand__mark {
  position: relative;
  padding-left: 15px;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: .08em;
  color: var(--white);
}

.brand__mark::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: translateY(-50%) rotate(45deg);
}

.brand__tagline {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  white-space: nowrap;
}

.signal-rail {
  display: flex;
  align-items: center;
  gap: 0;
  min-width: 0;
  max-width: 72%;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.signal-rail::-webkit-scrollbar { display: none; }

.signal-rail__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 18px;
  border-left: 1px dashed rgba(22, 34, 74, .95);
  white-space: nowrap;
  font-size: 12px;
}

.signal-rail__item:first-child { border-left: 0; }

.signal-rail__key {
  color: var(--mist);
  letter-spacing: .04em;
}

.signal-rail__val {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .02em;
}

.signal-rail__item:nth-child(2) .signal-rail__val { color: var(--violet); }
.signal-rail__item:nth-child(3) .signal-rail__val { color: var(--gold); }

.header-lower {
  position: relative;
  background: rgba(12, 22, 48, .94);
}

.header-lower__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 62px;
}

.main-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.main-nav__list::-webkit-scrollbar { display: none; }

.main-nav__item { flex: 0 0 auto; }

.main-nav__item--legal { display: none; }

.main-nav__link {
  display: block;
  padding: 9px 15px;
  font-size: 14.5px;
  letter-spacing: .01em;
  color: var(--white);
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.main-nav__link:hover {
  background: rgba(25, 227, 214, .1);
  color: var(--glow);
}

.main-nav__link[aria-current="page"] {
  background: var(--violet);
  color: #fff;
  font-weight: 700;
}

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  background: transparent;
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

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

.btn--primary {
  background: var(--cyan);
  color: #04121A;
}

.btn--primary:hover {
  background: var(--glow);
  color: #04121A;
}

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--white);
}

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

.btn--gold {
  background: var(--gold);
  color: #1A1000;
}

.btn--gold:hover { background: #FFCB63; }

.btn--violet {
  background: var(--violet);
  color: #fff;
}

.btn--violet:hover { background: #8E74FF; }

.btn--sm {
  padding: 7px 14px;
  font-size: 13px;
}

/* ---------- 移动导航开关 ---------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--white);
  font-size: 13px;
  letter-spacing: .06em;
  cursor: pointer;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 2px;
  background: var(--cyan);
  box-shadow: 0 -5px 0 var(--cyan), 0 5px 0 var(--cyan);
  transition: background var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars {
  background: var(--gold);
  box-shadow: 0 -5px 0 var(--gold), 0 5px 0 var(--gold);
}

.nav-toggle__text { font-weight: 700; }

/* ---------- 滚动进度光带 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 80;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 55%, var(--gold));
  transition: transform 120ms linear;
}

@media (max-width: 1140px) {
  .header-actions .btn--ghost { display: none; }
}

/* ---------- 头部移动端 ---------- */
@media (max-width: 900px) {
  .header-upper__inner {
    justify-content: flex-start;
    gap: 14px;
    min-height: 42px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .header-upper__inner::-webkit-scrollbar { display: none; }

  .brand__tagline { display: none; }

  .signal-rail {
    max-width: none;
    flex: 0 0 auto;
  }

  .signal-rail__item { padding: 0 12px; }

  .header-lower__inner {
    justify-content: flex-end;
    min-height: 56px;
  }

  .header-actions { display: none; }

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

  .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    padding: 14px clamp(16px, 4vw, 44px) 26px;
    max-height: min(72vh, 540px);
    overflow-y: auto;
    background: var(--panel);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 48px rgba(3, 6, 16, .72);
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  }

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

  .main-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    overflow: visible;
  }

  .main-nav__link {
    padding: 12px 14px;
    font-size: 16px;
  }

  .main-nav__item--legal { display: block; }

  .main-nav__item--legal .main-nav__link {
    font-size: 13.5px;
    color: var(--mist);
  }

  .main-nav__item--legal .main-nav__link:hover { color: var(--glow); }
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  background: #0A1226;
  border-top: 1px solid var(--line);
  color: var(--white);
}

.footer-rail {
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 48%, var(--gold));
  opacity: .85;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  padding-block: clamp(36px, 5vw, 64px);
}

@media (min-width: 900px) {
  .footer-inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

.footer-brand {
  display: grid;
  align-content: start;
  gap: 14px;
}

.footer-brand__mark {
  position: relative;
  padding-left: 17px;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: .1em;
}

.footer-brand__mark::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 7px;
  height: 7px;
  background: var(--gold);
  transform: translateY(-50%) rotate(45deg);
}

.footer-brand__note {
  max-width: 30em;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(232, 238, 249, .76);
}

.footer-meta {
  display: grid;
  gap: 8px;
  margin-top: 4px;
  font-size: 13px;
}

.footer-meta li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--line);
}

.footer-meta__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
  white-space: nowrap;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 560px) {
  .footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.footer-col__heading {
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--cyan);
}

.footer-col__list {
  display: grid;
  gap: 9px;
}

.footer-link {
  font-size: 14.5px;
  color: rgba(232, 238, 249, .78);
  transition: color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}

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

.footer-contact {
  grid-column: 1 / -1;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
}

.footer-contact__heading {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--violet);
}

.footer-contact__list {
  display: grid;
  gap: 12px;
}

.footer-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.footer-contact__key {
  min-width: 72px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.footer-contact__val { color: var(--white); }

.footer-contact__note {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 52em;
}

.copy-btn {
  padding: 3px 10px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

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

.copy-btn[data-busy="1"] {
  border-color: var(--gold);
  color: var(--gold);
}

.footer-bottom {
  background: var(--ink);
  border-top: 1px solid var(--line);
}

.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 20px;
  font-size: 12.5px;
  color: var(--mist);
}

.footer-icp {
  font-family: var(--font-mono);
  letter-spacing: .04em;
  color: var(--mist);
}

.footer-footnote {
  flex: 1 1 260px;
  min-width: 0;
  color: var(--mist);
}

.footer-copy {
  font-family: var(--font-mono);
  color: rgba(138, 151, 184, .82);
}

/* ---------- 面板 ---------- */
.panel {
  --band: var(--cyan);
  position: relative;
  padding: clamp(26px, 3.2vw, 40px) clamp(20px, 3vw, 34px) clamp(20px, 3vw, 34px);
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
}

.panel--violet { --band: var(--violet); }
.panel--gold { --band: var(--gold); }

.panel__band {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 12px;
  background: linear-gradient(90deg, var(--band), transparent 78%);
  opacity: .9;
  pointer-events: none;
}

.panel__body { position: relative; }

/* ---------- 轨道 ---------- */
.rail {
  display: flex;
  gap: clamp(14px, 2vw, 22px);
  padding: 8px 4px 28px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x proximity;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.rail:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.rail::-webkit-scrollbar { height: 4px; }
.rail::-webkit-scrollbar-track { background: transparent; }
.rail::-webkit-scrollbar-thumb { background: var(--line); }

.rail__item {
  position: relative;
  flex: 0 0 min(320px, 80vw);
  scroll-snap-align: start;
  padding: 26px 22px 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  transition: transform var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}

.rail__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--cyan), transparent 86%);
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease);
  pointer-events: none;
}

.rail__item:hover,
.rail__item:focus-within {
  transform: translateY(-4px);
  border-color: rgba(25, 227, 214, .5);
}

.rail__item:hover::before,
.rail__item:focus-within::before { opacity: 1; }

@media (min-width: 900px) {
  .rail__item:nth-child(even) { margin-top: 16px; }
}

.rail__index {
  display: inline-block;
  margin-bottom: 14px;
  padding: 1px 7px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

/* ---------- 说明牌 ---------- */
.label-card {
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--cyan);
}

.label-card--violet { border-left-color: var(--violet); }
.label-card--gold { border-left-color: var(--gold); }

.label-card__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--mist);
}

.label-card__title {
  margin: 6px 0;
  font-size: clamp(17px, 1.6vw, 20px);
  font-weight: 800;
  letter-spacing: -.01em;
}

.label-card__text {
  font-size: .94em;
  line-height: 1.8;
  color: rgba(232, 238, 249, .82);
}

/* ---------- 分段控件（纯 CSS） ---------- */
.segment {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 3px;
  padding: 4px;
  background: var(--ink);
  border: 1px solid var(--line);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.segment__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.segment__label {
  padding: 8px 16px;
  font-size: 14px;
  color: var(--mist);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.segment__label:hover { color: var(--glow); }

.segment__input:checked + .segment__label {
  background: var(--violet);
  color: #fff;
  font-weight: 700;
}

.segment__input:focus-visible + .segment__label {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 索引轴 ---------- */
.index-axis {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.index-axis__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  color: var(--mist);
  transition: color var(--t-fast) var(--ease);
}

.index-axis__item::before {
  content: "";
  width: 16px;
  height: 1px;
  background: currentColor;
  opacity: .6;
  transition: width var(--t-fast) var(--ease);
}

.index-axis__item.is-active {
  color: var(--cyan);
}

.index-axis__item.is-active::before {
  width: 26px;
  opacity: 1;
  background: var(--cyan);
}

/* ---------- 分隔带 ---------- */
.divider-band {
  height: 1px;
  margin: clamp(30px, 5vw, 60px) 0;
  background: linear-gradient(90deg, transparent, var(--line) 12%, var(--violet) 50%, var(--line) 88%, transparent);
  opacity: .7;
}

/* ---------- 图片容器 ---------- */
.figure { margin: 0; }

.figure__frame {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: linear-gradient(140deg, #0C1630 0%, #060B1A 72%);
  border: 1px solid var(--line);
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
}

.figure__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(122, 92, 255, .1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 92, 255, .1) 1px, transparent 1px);
  background-size: 36px 36px;
}

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

.figure__placeholder {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
}

.figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

.figure--wide .figure__frame { aspect-ratio: 21 / 9; }
.figure--tall .figure__frame { aspect-ratio: 4 / 5; }
.figure--square .figure__frame { aspect-ratio: 1 / 1; }

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid rgba(25, 227, 214, .35);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.tag--violet {
  border-color: rgba(122, 92, 255, .4);
  color: var(--violet);
}

.tag--gold {
  border-color: rgba(242, 180, 65, .4);
  color: var(--gold);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-block: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.breadcrumb__link {
  color: var(--mist);
  transition: color var(--t-fast) var(--ease);
}

.breadcrumb__link:hover { color: var(--glow); }

.breadcrumb__sep { opacity: .5; }

.breadcrumb__current { color: var(--white); }

/* ---------- 显现动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 焦点可见 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 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;
  }

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

  .rail__item:hover,
  .rail__item:focus-within,
  .btn:hover {
    transform: none;
  }

  .scroll-progress { transition: none; }
}