/* ==========================================================================
   十八游戏站 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 通用组件
   ========================================================================== */

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

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

body { margin: 0; }

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

[hidden] { display: none !important; }

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

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

ul, ol { padding: 0; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid #FFE45C;
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 2. 设计变量 ---------- */
:root {
  --c-cyan: #16E1E8;
  --c-orange: #FF7A29;
  --c-yellow: #FFE45C;
  --c-purple: #241542;
  --c-ink: #0E1030;
  --c-paper: #F3EFE4;
  --c-print: #14142B;
  --c-mist: #B8B4D6;
  --c-mint: #4CE0A8;
  --c-magenta: #FF4D8D;

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

  --shell: 1180px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --radius: 14px;
  --line-soft: rgba(243, 239, 228, .16);
  --line-cyan: rgba(22, 225, 232, .3);
  --ease: cubic-bezier(.22, .8, .24, 1);
}

/* ---------- 3. 中文排版与页面底色 ---------- */
body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.8;
  font-weight: 400;
  color: var(--c-paper);
  background-color: var(--c-ink);
  background-image:
    radial-gradient(1100px 620px at 10% -12%, rgba(36, 21, 66, .95), transparent 62%),
    radial-gradient(900px 520px at 94% 4%, rgba(22, 225, 232, .13), transparent 60%),
    radial-gradient(700px 500px at 50% 108%, rgba(255, 122, 41, .1), transparent 62%),
    repeating-linear-gradient(0deg, rgba(243, 239, 228, .022) 0 1px, transparent 1px 4px);
  background-attachment: fixed;
  letter-spacing: .01em;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: repeating-linear-gradient(90deg, rgba(243, 239, 228, .035) 0 1px, transparent 1px 88px);
  opacity: .55;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: .02em;
}

p { text-wrap: pretty; }

::selection {
  background: var(--c-cyan);
  color: var(--c-print);
}

/* ---------- 4. 内容容器与网格 ---------- */
.shell {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.75rem);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--offset { align-items: start; }

@media (min-width: 860px) {
  .grid--offset > *:nth-child(even) { margin-top: clamp(1.2rem, 3vw, 2.6rem); }
}

@media (max-width: 860px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 5. 滚动进度条 ---------- */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: rgba(22, 225, 232, .12);
  overflow: hidden;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-orange) 62%, var(--c-yellow));
  box-shadow: 0 0 14px rgba(22, 225, 232, .8);
  transition: width .12s linear;
}

/* ---------- 6. 页头 ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -120px;
  z-index: 200;
  padding: .65rem 1.1rem;
  background: var(--c-yellow);
  color: var(--c-print);
  font-weight: 800;
  font-size: .9rem;
  text-decoration: none;
  border-radius: 0 0 10px 10px;
  transition: top .2s var(--ease);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: linear-gradient(180deg, rgba(14, 16, 48, .98), rgba(14, 16, 48, .9));
  border-bottom: 1px solid var(--line-cyan);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow .28s var(--ease);
}

.site-header.is-condensed {
  box-shadow: 0 18px 40px -28px rgba(22, 225, 232, .75);
}

.masthead {
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding-block: clamp(.7rem, 1.8vw, 1.3rem) clamp(.4rem, 1.2vw, .9rem);
  display: grid;
  gap: .35rem;
  transition: padding .28s var(--ease);
}

.site-header.is-condensed .masthead { padding-block: .35rem .2rem; }

/* 刊头工具行 */
.masthead__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem 1rem;
}

.masthead__issue {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .22em;
  color: var(--c-mist);
  text-transform: uppercase;
  white-space: nowrap;
}

.masthead__tools {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
}

.season-badge {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .24rem .7rem;
  border: 1px solid rgba(76, 224, 168, .45);
  border-radius: 999px;
  background: rgba(76, 224, 168, .1);
  color: var(--c-mint);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  white-space: nowrap;
}

.season-badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-mint);
  box-shadow: 0 0 0 0 rgba(76, 224, 168, .7);
  animation: shiba-pulse 2.4s var(--ease) infinite;
}

@keyframes shiba-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(76, 224, 168, .65); }
  70%  { box-shadow: 0 0 0 9px rgba(76, 224, 168, 0); }
  100% { box-shadow: 0 0 0 0 rgba(76, 224, 168, 0); }
}

/* 站内检索 */
.site-search {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .26rem .4rem .26rem .8rem;
  border: 1px solid rgba(243, 239, 228, .2);
  border-radius: 999px;
  background: rgba(243, 239, 228, .06);
  transition: border-color .18s var(--ease), background .18s var(--ease);
}

.site-search:focus-within {
  border-color: var(--c-cyan);
  background: rgba(22, 225, 232, .1);
}

.site-search__label {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  color: var(--c-mist);
  white-space: nowrap;
}

.site-search__input {
  width: 12.5rem;
  min-width: 0;
  padding: .22rem .5rem .22rem 0;
  border: 0;
  background: transparent;
  outline: none;
  color: var(--c-paper);
  font-family: var(--font-sans);
  font-size: .88rem;
}

.site-search__input::placeholder { color: rgba(184, 180, 214, .58); }

.site-search__hint {
  padding-inline: .2rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--c-yellow);
}

.site-search--footer { width: 100%; }
.site-search--footer .site-search__input { width: 100%; }

/* 居中报头 */
.masthead__center {
  display: grid;
  justify-items: center;
  gap: .2rem;
  padding-block: clamp(.4rem, 1.6vw, .9rem);
  transition: padding .28s var(--ease);
}

.site-header.is-condensed .masthead__center { padding-block: .1rem; }

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: .55rem;
  text-decoration: none;
  color: var(--c-paper);
}

.brand__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.4vw, 3.1rem);
  line-height: .92;
  color: transparent;
  -webkit-text-stroke: 1.6px var(--c-cyan);
  text-shadow: 0 0 26px rgba(22, 225, 232, .5);
  letter-spacing: -.02em;
  transition: font-size .28s var(--ease);
}

@supports not ((-webkit-text-stroke: 1px red)) {
  .brand__num { color: var(--c-cyan); }
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  letter-spacing: .06em;
  transition: font-size .28s var(--ease);
}

.site-header.is-condensed .brand__num { font-size: clamp(1.3rem, 2.6vw, 1.8rem); }
.site-header.is-condensed .brand__name { font-size: clamp(1.05rem, 2.2vw, 1.4rem); }

.brand__tagline {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .36em;
  text-indent: .36em;
  color: var(--c-cyan);
}

.site-header.is-condensed .brand__tagline { display: none; }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  padding: .42rem .85rem;
  border: 1px solid rgba(22, 225, 232, .5);
  border-radius: 999px;
  background: rgba(22, 225, 232, .1);
  color: var(--c-cyan);
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: .82rem;
  cursor: pointer;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .24s var(--ease), top .24s var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { top: 10px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 5px; transform: rotate(-45deg); }

.nav-toggle__text { white-space: nowrap; }

/* 栏目条 */
.site-nav {
  background: rgba(36, 21, 66, .55);
  border-top: 1px solid rgba(22, 225, 232, .2);
  border-bottom: 1px solid rgba(22, 225, 232, .2);
  overflow: hidden;
  transition: max-height .38s var(--ease), border-color .3s var(--ease);
}

.site-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .18rem;
  margin: 0;
  padding: .5rem var(--gutter);
  list-style: none;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: .42rem;
  padding: .48rem .95rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--c-mist);
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: .94rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), background .18s var(--ease),
              border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.site-nav__link:hover {
  color: var(--c-paper);
  background: rgba(22, 225, 232, .12);
  border-color: rgba(22, 225, 232, .42);
}

.site-nav__link[aria-current="page"] {
  color: var(--c-ink);
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  box-shadow: 0 0 24px -6px rgba(22, 225, 232, .9);
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  padding-top: 1px;
  background: linear-gradient(180deg, rgba(36, 21, 66, .9), rgba(14, 16, 48, .99));
  border-top: 1px solid var(--line-cyan);
  color: var(--c-mist);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(620px 320px at 8% 0%, rgba(22, 225, 232, .16), transparent 68%),
    radial-gradient(520px 300px at 96% 12%, rgba(255, 122, 41, .14), transparent 66%),
    repeating-linear-gradient(90deg, rgba(243, 239, 228, .045) 0 1px, transparent 1px 72px);
}

.footer__inner {
  position: relative;
  z-index: 1;
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding-block: clamp(2.2rem, 5vw, 3.6rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 3vw, 2.4rem);
}

@media (min-width: 700px) {
  .footer__inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1080px) {
  .footer__inner { grid-template-columns: 1.5fr 1fr 1fr 1.35fr; }
}

.footer-block { min-width: 0; }

.footer-brand {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1.1;
  color: var(--c-paper);
}

.footer-brand__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05em;
  line-height: 1;
  color: var(--c-orange);
}

@supports (-webkit-text-stroke: 1px red) {
  .footer-brand__num {
    color: transparent;
    -webkit-text-stroke: 1.6px var(--c-orange);
    text-shadow: 0 0 26px rgba(255, 122, 41, .4);
  }
}

.footer-slogan {
  margin-top: .5rem;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: .84rem;
  letter-spacing: .34em;
  text-indent: .34em;
  color: var(--c-cyan);
}

.footer-status {
  margin-top: .7rem;
  display: flex;
  align-items: flex-start;
  gap: .5rem;
  max-width: 30em;
  font-size: .88rem;
  line-height: 1.7;
  color: var(--c-mist);
}

.status-dot {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: .62em;
  border-radius: 50%;
  background: var(--c-mint);
  box-shadow: 0 0 10px rgba(76, 224, 168, .9);
}

.footer-search { margin-top: 1.1rem; max-width: 24rem; }

.footer-heading {
  margin-bottom: .9rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .24em;
  color: var(--c-cyan);
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .52rem;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--c-mist);
  font-size: .95rem;
  text-decoration: none;
  transition: color .16s var(--ease), transform .16s var(--ease);
}

.footer-links a::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: rgba(22, 225, 232, .55);
  transform: rotate(45deg);
  transition: background .16s var(--ease);
}

.footer-links a:hover { color: var(--c-paper); transform: translateX(3px); }
.footer-links a:hover::before { background: var(--c-orange); }

.footer-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .75rem;
}

.footer-contact__label {
  display: block;
  margin-bottom: .2rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .18em;
  color: rgba(184, 180, 214, .72);
  text-transform: uppercase;
}

.footer-contact__text {
  font-size: .9rem;
  color: var(--c-paper);
  word-break: break-word;
}

.copy-chip {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .3rem .65rem;
  border: 1px solid rgba(243, 239, 228, .2);
  border-radius: 8px;
  background: rgba(243, 239, 228, .06);
  color: var(--c-paper);
  font-family: var(--font-mono);
  font-size: .82rem;
  text-align: left;
  cursor: pointer;
  word-break: break-all;
  transition: border-color .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
}

.copy-chip::after {
  content: "复制";
  flex: none;
  padding-left: .5rem;
  border-left: 1px solid rgba(243, 239, 228, .22);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--c-cyan);
}

.copy-chip:hover {
  border-color: var(--c-cyan);
  background: rgba(22, 225, 232, .12);
}

.copy-chip[data-copied="true"] {
  border-color: rgba(76, 224, 168, .6);
  background: rgba(76, 224, 168, .12);
}

.copy-chip[data-copied="true"]::after { content: "已复制"; color: var(--c-mint); }

.footer__legal {
  position: relative;
  z-index: 1;
  width: min(var(--shell), calc(100% - var(--gutter) * 2));
  margin-inline: auto;
  padding: 1.1rem 0 2rem;
  border-top: 1px solid rgba(243, 239, 228, .14);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem 1.6rem;
  font-size: .8rem;
  color: var(--c-mist);
}

.footer__legal-copy { font-family: var(--font-mono); letter-spacing: .02em; }
.footer__legal-meta { color: rgba(184, 180, 214, .82); }

.footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.1rem;
}

.footer__legal-links a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px dashed rgba(184, 180, 214, .45);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.footer__legal-links a:hover { color: var(--c-cyan); border-color: var(--c-cyan); }

.to-top {
  margin-left: auto;
  padding: .42rem .95rem;
  border: 1px solid rgba(22, 225, 232, .5);
  border-radius: 999px;
  background: transparent;
  color: var(--c-cyan);
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: .8rem;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}

.to-top:hover {
  background: var(--c-cyan);
  color: var(--c-ink);
  transform: translateY(-2px);
}

/* ---------- 8. 通用按钮 / 标签 / 胶囊 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .78rem 1.4rem;
  border: 1.5px solid transparent;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: .98rem;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform .18s var(--ease), background .18s var(--ease),
              color .18s var(--ease), border-color .18s var(--ease), box-shadow .18s var(--ease);
}

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

.btn--primary {
  background: var(--c-orange);
  color: var(--c-print);
  box-shadow: 0 16px 32px -18px rgba(255, 122, 41, .95);
}

.btn--primary:hover { background: var(--c-yellow); }

.btn--ghost {
  background: transparent;
  color: var(--c-cyan);
  border-color: rgba(22, 225, 232, .55);
}

.btn--ghost:hover {
  background: rgba(22, 225, 232, .14);
  color: var(--c-paper);
  border-color: var(--c-cyan);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .2rem .62rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .05em;
  white-space: nowrap;
}

.tag--new { background: var(--c-yellow); color: var(--c-print); }
.tag--ok { background: rgba(76, 224, 168, .16); color: var(--c-mint); border-color: rgba(76, 224, 168, .45); }
.tag--warn { background: rgba(255, 77, 141, .14); color: var(--c-magenta); border-color: rgba(255, 77, 141, .45); }
.tag--outline { background: transparent; color: var(--c-cyan); border-color: rgba(22, 225, 232, .5); }

.mono-chip {
  display: inline-block;
  padding: .16rem .52rem;
  border: 1px solid rgba(243, 239, 228, .18);
  border-radius: 6px;
  background: rgba(243, 239, 228, .08);
  color: var(--c-yellow);
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .02em;
  white-space: nowrap;
}

/* ---------- 9. 长卷区块与说明牌 ---------- */
.section-band {
  position: relative;
  padding-block: clamp(2.4rem, 6vw, 5rem);
  border-top: 1px solid var(--line-cyan);
}

.section-band::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(52px, 12vw, 168px);
  height: 6px;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-orange));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

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

.num-badge {
  display: inline-grid;
  place-items: center;
  min-width: 2.4rem;
  padding: .12rem .5rem;
  border-radius: 6px;
  background: var(--c-cyan);
  color: var(--c-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .9rem;
  letter-spacing: .04em;
}

.plate {
  position: relative;
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(36, 21, 66, .94), rgba(14, 16, 48, .94));
  overflow: hidden;
  transition: transform .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.plate::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-cyan), transparent 78%);
}

.plate:hover {
  transform: translateY(-4px);
  border-color: rgba(22, 225, 232, .5);
  box-shadow: 0 26px 46px -30px rgba(22, 225, 232, .95);
}

.plate__label {
  display: block;
  margin-bottom: .6rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--c-cyan);
  text-transform: uppercase;
}

.plate--paper {
  background: var(--c-paper);
  border-color: var(--c-print);
  color: var(--c-print);
}

.plate--paper .plate__label { color: #6B5B8A; }
.plate--paper::after { background: linear-gradient(90deg, var(--c-orange), transparent 78%); }

/* ---------- 10. 图片容器（页面阶段放 img） ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid rgba(243, 239, 228, .18);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(22, 225, 232, .16), rgba(255, 122, 41, .16)),
    repeating-linear-gradient(45deg, rgba(243, 239, 228, .05) 0 8px, transparent 8px 16px),
    var(--c-purple);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(14, 16, 48, .22) 0 1px, transparent 1px 3px);
  opacity: .55;
}

.media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--diag { clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 96%); }
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.media-frame__tag {
  position: absolute;
  left: .8rem;
  bottom: .8rem;
  z-index: 2;
  padding: .22rem .6rem;
  border-radius: 6px;
  background: var(--c-yellow);
  color: var(--c-print);
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
}

/* ---------- 11. 正文容器 / 面包屑 / 展开项 ---------- */
.prose { max-width: 38em; }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font-size: clamp(1.5rem, 3.2vw, 2.1rem); }
.prose h3 { font-size: clamp(1.15rem, 2.4vw, 1.45rem); }
.prose a { color: var(--c-cyan); text-decoration: underline; text-underline-offset: 3px; }
.prose ul,
.prose ol { padding-left: 1.25em; }
.prose li + li { margin-top: .4em; }
.prose strong { color: var(--c-yellow); font-weight: 800; }
.prose blockquote {
  padding: .2em 0 .2em 1.1em;
  border-left: 3px solid var(--c-cyan);
  color: var(--c-mist);
}

.breadcrumb {
  margin-top: 1.2rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--c-mist);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: .45rem;
  color: rgba(184, 180, 214, .5);
}

.breadcrumb a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px dashed rgba(184, 180, 214, .45);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.breadcrumb a:hover { color: var(--c-cyan); border-color: var(--c-cyan); }
.breadcrumb [aria-current="page"] { color: var(--c-paper); }

.disclosure {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(36, 21, 66, .5);
  overflow: hidden;
}

.disclosure + .disclosure { margin-top: .7rem; }

.disclosure > summary {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .9rem 1.1rem;
  cursor: pointer;
  font-weight: 800;
  color: var(--c-paper);
  list-style: none;
  transition: background .18s var(--ease);
}

.disclosure > summary::-webkit-details-marker { display: none; }

.disclosure > summary::before {
  content: "+";
  flex: none;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: rgba(22, 225, 232, .18);
  color: var(--c-cyan);
  font-family: var(--font-mono);
  font-size: .85rem;
}

.disclosure[open] > summary::before { content: "−"; background: var(--c-cyan); color: var(--c-ink); }
.disclosure > summary:hover { background: rgba(22, 225, 232, .08); }

.disclosure > *:not(summary) {
  padding-inline: 1.1rem;
  padding-bottom: 1rem;
}

/* ---------- 12. 显现动效 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}

.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1; transform: none; }
  .season-badge__dot { animation: none; }
}

/* ---------- 13. 响应式外壳 ---------- */
@media (max-width: 1080px) {
  .site-search__input { width: 10rem; }
}

@media (max-width: 860px) {
  body { font-size: 16px; }

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

  .masthead__issue { display: none; }

  .masthead__tools {
    width: 100%;
    margin-left: 0;
    justify-content: space-between;
  }

  .site-search { flex: 1 1 auto; }
  .site-search__input { width: 100%; }

  .site-nav {
    max-height: 0;
    border-bottom-color: transparent;
  }

  .site-nav[data-open="true"] {
    max-height: 30rem;
    border-bottom-color: rgba(22, 225, 232, .3);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: .12rem;
    padding: .6rem var(--gutter) 1rem;
    overflow: visible;
  }

  .site-nav__link {
    width: 100%;
    border-radius: 10px;
    justify-content: flex-start;
    padding: .7rem .9rem;
  }

  .footer__legal { flex-direction: column; align-items: flex-start; }
  .to-top { margin-left: 0; }
}

@media (max-width: 600px) {
  .brand__tagline { letter-spacing: .24em; text-indent: .24em; }
  .site-search__label { display: none; }
  .site-search { padding-left: .8rem; }
  .masthead__tools { gap: .5rem; }
  .footer__legal { padding-bottom: 1.6rem; }
}