/* ============================================================
   1973牌局 · /assets/site.css
   共享层：reset / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   ============================================================ */

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--c-dusk);
  color: var(--c-paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption, blockquote, dl, dd, dt {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

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

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

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

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

/* ---------------- 变量 ---------------- */
:root {
  --c-ink: #0B1110;
  --c-dusk: #101A1A;
  --c-table: #142E27;
  --c-pine: #1E4A3B;
  --c-paper: #E8E2D4;
  --c-paper-2: #F5F0E6;
  --c-gold: #D8A94B;
  --c-gold-lift: #E4BA63;
  --c-clay: #B85C48;
  --c-line: #8FA79B;
  --c-zinc: #5C6B66;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 1180px;
  --gut: clamp(18px, 4vw, 48px);
  --dur: 200ms;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------------- 容器与工具类 ---------------- */
.pj-container {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.pj-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}

.pj-hr {
  display: block;
  height: 1px;
  border: 0;
  background: rgba(143, 167, 155, .28);
  margin-block: 28px;
}

.pj-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------------- 跳转链接 ---------------- */
.pj-skip {
  position: fixed;
  left: 14px;
  top: -72px;
  z-index: 200;
  display: inline-block;
  padding: 10px 20px;
  background: var(--c-gold);
  color: var(--c-ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  border-radius: 2px;
  transition: top var(--dur) var(--ease);
}

.pj-skip:focus,
.pj-skip:focus-visible {
  top: 14px;
}

/* ============================================================
   头部
   ============================================================ */
.pj-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--c-dusk);
  color: var(--c-paper);
  border-top: 3px solid var(--c-gold);
  border-bottom: 1px solid rgba(143, 167, 155, .22);
  box-shadow: 0 16px 34px -28px rgba(0, 0, 0, .95);
}

.pj-header__bar {
  background: var(--c-table);
  border-bottom: 1px solid rgba(143, 167, 155, .18);
}

.pj-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.pj-header__navrow {
  background: var(--c-dusk);
}

.pj-header__navrow .pj-header__inner {
  min-height: 56px;
}

.pj-header__tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.pj-header__coord {
  margin-inline-start: 26px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--c-zinc);
  white-space: nowrap;
}

/* 品牌 */
.pj-brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-width: 0;
}

.pj-brand__mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: .08em;
  line-height: 1.2;
  color: var(--c-paper-2);
  white-space: nowrap;
}

.pj-brand__tagline {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-line);
  padding-inline-start: 14px;
  border-inline-start: 1px solid rgba(143, 167, 155, .35);
  white-space: nowrap;
}

/* 订阅找回 */
.pj-recover__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid rgba(216, 169, 75, .55);
  border-radius: 2px;
  background: transparent;
  color: var(--c-gold);
  font-size: 13px;
  letter-spacing: .1em;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.pj-recover__btn:hover {
  background: rgba(216, 169, 75, .13);
}

.pj-recover__btn[aria-expanded="true"] {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-ink);
}

.pj-recover__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-clay);
  box-shadow: 0 0 0 3px rgba(184, 92, 72, .22);
  flex-shrink: 0;
}

.pj-recover__btn[aria-expanded="true"] .pj-recover__dot {
  background: var(--c-ink);
  box-shadow: none;
}

.pj-recover__panel {
  background: var(--c-pine);
  border-bottom: 1px solid rgba(216, 169, 75, .3);
  color: var(--c-paper);
  animation: pj-drop var(--dur) var(--ease) both;
}

.pj-recover__panel[hidden] {
  display: none;
}

@keyframes pj-drop {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: none; }
}

.pj-recover__panelinner {
  display: grid;
  gap: 16px;
  align-items: center;
  padding-block: 18px 20px;
}

.pj-recover__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--c-paper-2);
}

.pj-recover__steps {
  display: grid;
  gap: 8px 28px;
  margin-top: 10px;
  counter-reset: step;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(232, 226, 212, .82);
}

.pj-recover__step {
  position: relative;
  padding-inline-start: 26px;
}

.pj-recover__step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  inset-inline-start: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--c-gold);
}

/* 主导航 */
.pj-nav {
  margin-inline-start: auto;
}

.pj-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 34px);
}

.pj-nav__item {
  display: block;
}

.pj-nav__link {
  position: relative;
  display: inline-block;
  padding-block: 7px;
  font-size: 15px;
  letter-spacing: .05em;
  color: var(--c-paper);
  transition: color var(--dur) var(--ease);
}

.pj-nav__link::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.pj-nav__link:hover {
  color: var(--c-gold);
}

.pj-nav__link:hover::after {
  transform: scaleX(1);
}

.pj-nav__link[aria-current="page"] {
  color: var(--c-gold);
}

.pj-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

/* 移动导航按钮 */
.pj-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border: 1px solid rgba(143, 167, 155, .4);
  border-radius: 2px;
  background: transparent;
  color: var(--c-paper);
  font-size: 13px;
  letter-spacing: .12em;
  cursor: pointer;
}

.pj-nav-toggle__box {
  display: grid;
  gap: 4px;
  width: 18px;
}

.pj-nav-toggle__bar {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.pj-nav-toggle__text {
  line-height: 1;
}

/* 阅读进度 */
.pj-progress {
  position: absolute;
  inset-inline: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(143, 167, 155, .14);
  pointer-events: none;
}

.pj-progress__bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--c-clay), var(--c-gold));
  transition: width 90ms linear;
}

/* ============================================================
   页脚
   ============================================================ */
.pj-footer {
  background: var(--c-ink);
  color: var(--c-paper);
  border-top: 1px solid rgba(216, 169, 75, .24);
}

.pj-footer__rule {
  height: 6px;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(216, 169, 75, .65) 0 22px,
    transparent 22px 44px
  );
  opacity: .8;
}

.pj-footer__inner {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  padding-block: clamp(38px, 6vw, 72px) clamp(28px, 4vw, 48px);
  grid-template-columns: 1fr;
}

.pj-footer__brandcol {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.pj-footer__brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3vw, 32px);
  letter-spacing: .08em;
  line-height: 1.2;
  color: var(--c-paper-2);
}

.pj-footer__line {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--c-line);
}

.pj-footer__since {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--c-zinc);
}

.pj-footer__brandcol .pj-btn {
  margin-top: 22px;
}

.pj-footer__cols {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.pj-footer__col {
  min-width: 0;
}

.pj-footer__heading {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .22em;
  color: var(--c-gold);
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(143, 167, 155, .22);
}

.pj-footer__list {
  display: grid;
  gap: 11px;
}

.pj-footer__link {
  display: inline-block;
  font-size: 14.5px;
  color: rgba(232, 226, 212, .86);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.pj-footer__link:hover {
  color: var(--c-gold);
  transform: translateX(4px);
}

.pj-footer__col--contact .pj-footer__list {
  gap: 18px;
}

.pj-footer__item {
  display: block;
}

.pj-footer__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--c-zinc);
  margin-bottom: 3px;
}

.pj-footer__value {
  display: block;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(232, 226, 212, .92);
  overflow-wrap: anywhere;
}

.pj-copy {
  margin-top: 7px;
  padding: 3px 11px;
  border: 1px solid rgba(143, 167, 155, .35);
  border-radius: 2px;
  background: transparent;
  color: var(--c-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  cursor: pointer;
  transition: background var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.pj-copy:hover {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-ink);
}

.pj-copy.is-copied {
  background: var(--c-pine);
  border-color: var(--c-pine);
  color: var(--c-paper-2);
}

.pj-footer__note {
  margin-top: 20px;
  max-width: 44ch;
  padding-inline-start: 12px;
  border-inline-start: 2px solid rgba(184, 92, 72, .65);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-zinc);
}

.pj-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 18px 30px;
  border-top: 1px solid rgba(143, 167, 155, .18);
  font-size: 12.5px;
  color: var(--c-zinc);
}

.pj-footer__legal {
  font-family: var(--font-mono);
  letter-spacing: .08em;
}

.pj-footer__copy {
  line-height: 1.6;
}

/* ============================================================
   通用按钮
   ============================================================ */
.pj-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1.4;
  text-align: center;
  cursor: pointer;
  transition: background var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

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

.pj-btn--gold {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-ink);
}

.pj-btn--gold:hover {
  background: var(--c-gold-lift);
  border-color: var(--c-gold-lift);
}

.pj-btn--ghost {
  background: transparent;
  border-color: rgba(216, 169, 75, .5);
  color: var(--c-gold);
}

.pj-btn--ghost:hover {
  background: rgba(216, 169, 75, .12);
}

.pj-btn--sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* ============================================================
   面包屑
   ============================================================ */
.pj-breadcrumb {
  padding-block: 14px;
  border-bottom: 1px solid rgba(143, 167, 155, .18);
}

.pj-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--c-zinc);
}

.pj-breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.pj-breadcrumb__item + .pj-breadcrumb__item::before {
  content: "/";
  color: rgba(143, 167, 155, .5);
}

.pj-breadcrumb__link {
  color: var(--c-line);
  transition: color var(--dur) var(--ease);
}

.pj-breadcrumb__link:hover {
  color: var(--c-gold);
}

/* ============================================================
   纵向章节与纸面正文
   ============================================================ */
.pj-section {
  position: relative;
  padding-block: clamp(48px, 8vw, 110px);
}

.pj-section--paper {
  background: var(--c-paper-2);
  color: var(--c-ink);
}

.pj-section--table {
  background: var(--c-table);
  color: var(--c-paper);
}

.pj-eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.pj-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -.02em;
  color: rgba(216, 169, 75, .55);
  transition: color var(--dur) var(--ease);
}

.pj-chapter {
  position: relative;
}

.pj-chapter.is-current .pj-num {
  color: var(--c-gold);
}

.pj-section--paper .pj-num {
  color: rgba(30, 74, 59, .55);
}

.pj-section--paper .pj-chapter.is-current .pj-num {
  color: var(--c-pine);
}

.pj-prose {
  background: var(--c-paper-2);
  color: var(--c-ink);
  padding: clamp(22px, 4vw, 48px);
  border-inline-start: 3px solid var(--c-gold);
}

.pj-prose > * + * {
  margin-top: 1.05em;
}

.pj-prose h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: .02em;
  color: var(--c-ink);
}

.pj-prose h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-pine);
}

.pj-prose p {
  max-width: 68ch;
  line-height: 1.8;
}

.pj-prose a {
  color: #8f3f2b;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.pj-prose ul {
  list-style: disc;
  padding-inline-start: 1.3em;
}

.pj-prose ol {
  list-style: decimal;
  padding-inline-start: 1.3em;
}

.pj-prose li + li {
  margin-top: .4em;
}

.pj-prose code {
  font-family: var(--font-mono);
  font-size: .92em;
  background: rgba(16, 26, 26, .09);
  padding: 1px 6px;
  border-radius: 2px;
}

/* ============================================================
   网格 / 卡片 / 标签 / 图片容器
   ============================================================ */
.pj-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  grid-template-columns: 1fr;
}

.pj-card {
  background: var(--c-table);
  border: 1px solid rgba(143, 167, 155, .2);
  border-top: 2px solid var(--c-gold);
  padding: clamp(18px, 3vw, 28px);
  color: var(--c-paper);
  transition: background var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.pj-card:hover {
  background: var(--c-pine);
  border-color: rgba(216, 169, 75, .5);
  transform: translateY(-3px);
}

.pj-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid rgba(216, 169, 75, .35);
  border-radius: 2px;
  background: rgba(216, 169, 75, .14);
  color: var(--c-gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  line-height: 1.6;
}

.pj-tag--old {
  background: rgba(184, 92, 72, .18);
  border-color: rgba(184, 92, 72, .5);
  color: #E09280;
}

.pj-media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid rgba(143, 167, 155, .22);
  background-color: var(--c-table);
  background-image:
    radial-gradient(120% 90% at 18% 8%, rgba(30, 74, 59, .92) 0%, rgba(16, 26, 26, .96) 62%),
    linear-gradient(160deg, #142E27 0%, #101A1A 72%);
}

.pj-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(143, 167, 155, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 167, 155, .12) 1px, transparent 1px);
  background-size: 32px 32px;
}

.pj-media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

/* ============================================================
   滚动显现（JS 加 .pj-reveal，进入视口加 .is-in）
   ============================================================ */
.pj-reveal {
  transition: opacity 260ms var(--ease), transform 260ms var(--ease);
}

:root.pj-motion .pj-reveal {
  opacity: 0;
  transform: translateY(14px);
}

:root.pj-motion .pj-reveal.is-in {
  opacity: 1;
  transform: none;
}

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

@media (min-width: 820px) {
  .pj-recover__panelinner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 24px;
  }

  .pj-recover__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .pj-grid--3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pj-footer__inner {
    grid-template-columns: minmax(230px, .85fr) 2fr;
    align-items: start;
  }
}

@media (max-width: 1024px) {
  .pj-header__coord {
    display: none;
  }
}

@media (max-width: 860px) {
  .pj-nav-toggle {
    display: inline-flex;
  }

  .pj-header__navrow .pj-header__inner {
    flex-wrap: wrap;
    gap: 10px;
    padding-block: 10px;
  }

  .pj-nav {
    display: none;
    flex: 0 0 100%;
    width: 100%;
    margin-inline-start: 0;
    padding-block: 4px 12px;
    border-top: 1px solid rgba(143, 167, 155, .18);
  }

  .pj-header[data-open="true"] .pj-nav {
    display: block;
  }

  .pj-header[data-open="true"] .pj-nav-toggle {
    color: var(--c-gold);
    border-color: rgba(216, 169, 75, .55);
  }

  .pj-header[data-open="true"] .pj-nav-toggle__bar:nth-child(1) {
    transform: translateY(5.5px) rotate(45deg);
  }

  .pj-header[data-open="true"] .pj-nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  .pj-header[data-open="true"] .pj-nav-toggle__bar:nth-child(3) {
    transform: translateY(-5.5px) rotate(-45deg);
  }

  .pj-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .pj-nav__link {
    display: block;
    padding-block: 13px;
    font-size: 16px;
    border-bottom: 1px solid rgba(143, 167, 155, .16);
  }

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

  .pj-nav__link[aria-current="page"] {
    padding-inline-start: 12px;
    border-inline-start: 2px solid var(--c-gold);
  }

  .pj-header__coord {
    display: none;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .pj-brand__tagline {
    display: none;
  }

  .pj-recover__btn {
    padding: 7px 12px;
    font-size: 12px;
  }

  .pj-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ============================================================
   降低动效
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

  :root.pj-motion .pj-reveal,
  :root.pj-motion .pj-reveal.is-in {
    opacity: 1;
    transform: none;
  }

  .pj-btn:hover,
  .pj-card:hover,
  .pj-footer__link:hover {
    transform: none;
  }
}