/* ============================================================
   朱梓彦 · personal site — base styles
   依据 design-spec.md 第 2-7 节
   ============================================================ */

:root {
  --bg: #DFF2FC;        /* 极淡天蓝 */
  --surface: #FCF8E7;   /* 奶油白卡片 */
  --ink: #2C4A6E;       /* 深蓝灰文字 */
  --ink-dark: #2C4A6E;  /* 与 ink 同色，保留语义位 */
  --acid: #95C2E2;      /* 柔和蓝 · 线条 / hover */
  --warm: #FF5436;      /* 暂未使用，保留 */
  --muted: rgba(44, 74, 110, 0.55);  /* 弱化文字 */
  --hairline: rgba(149, 194, 226, 0.7); /* 蓝色细线 */

  --font-display: "Lora", "PP Editorial New", "Fraunces",
                  "Source Han Serif SC", "Noto Serif SC",
                  "Songti SC", Georgia, serif;
  --font-body: "Lora", "Source Han Serif SC", "Noto Serif SC",
               "Songti SC", "PingFang SC", "Microsoft YaHei",
               Georgia, serif;
  --font-hand: "Caveat", "Homemade Apple",
               "LXGW WenKai", "霞鹜文楷", "Kaiti SC", cursive;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular",
               Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ============================================================
   PAGE LAYOUT (index hero)
   ============================================================ */

.page {
  position: relative;
  min-height: 100vh;
  padding: 32px clamp(24px, 5vw, 72px);
  padding-top: clamp(96px, 12vh, 132px);
  display: flex;
  flex-direction: column;
}

/* 固定顶栏：所有页面常驻 */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px clamp(24px, 5vw, 72px);
  background: linear-gradient(to bottom, var(--bg) 70%, rgba(223,242,252,0));
  pointer-events: none;
}
.topbar > * { pointer-events: auto; }

.brand {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.brand .brand-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--acid);
  border-radius: 50%;
  margin: 0 6px 3px 0;
  vertical-align: middle;
}

/* ===== menu 按钮 ===== */
.menu-btn {
  background: transparent;
  border: none;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 4px;
  cursor: pointer;
}

.menu-btn .menu-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
}

.menu-btn .menu-bars i {
  display: block;
  width: 26px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 360ms var(--ease), background 200ms ease;
}

.menu-btn:hover { color: var(--acid); }
.menu-btn:hover .menu-bars i { background: var(--acid); }
.menu-btn:hover .menu-bars i:first-child { transform: translateX(-4px); }
.menu-btn:hover .menu-bars i:last-child { transform: translateX(4px); }

/* ============================================================
   HERO
   ============================================================ */

.hero {
  flex: 1;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  align-items: center;
  gap: clamp(32px, 6vw, 96px);
  padding: clamp(40px, 8vh, 120px) 0 clamp(32px, 5vh, 80px);
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: clamp(20px, 3vh, 40px);
  height: 1px;
  background: var(--hairline);
}

.hero-left { position: relative; }

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 28px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.hero-eyebrow::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--hairline);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(44px, 6.4vw, 96px);
  line-height: 1.02;
  letter-spacing: -0.012em;
  margin: 0;
  font-style: italic;
}

.hero-title .line {
  display: block;
  opacity: 0;
  transform: translateY(28px);
  animation: rise 800ms var(--ease) forwards;
}
.hero-title .line:nth-child(1) { animation-delay: 120ms; }
.hero-title .line:nth-child(2) { animation-delay: 260ms; padding-left: clamp(28px, 7vw, 120px); }
.hero-title .line:nth-child(3) { animation-delay: 400ms; }

.hero-title em {
  font-style: italic;
  color: var(--ink);
  background-image: linear-gradient(transparent 72%, var(--acid) 72%, var(--acid) 96%, transparent 96%);
  background-repeat: no-repeat;
  padding: 0 0.04em;
}

@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

.hero-lede {
  margin: clamp(28px, 5vh, 56px) 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.65;
  color: rgba(44, 74, 110, 0.84);
}

/* ===== enter 按钮 ===== */
.enter-btn {
  display: inline-flex;
  align-items: baseline;
  gap: 14px;
  margin-top: clamp(24px, 4vh, 48px);
  padding: 0;
  background: transparent;
  border: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(28px, 3.2vw, 44px);
  cursor: pointer;
  letter-spacing: -0.01em;
  position: relative;
}

.enter-btn::after {
  content: "";
  position: absolute;
  left: 0; right: 14%;
  bottom: -6px;
  height: 1.5px;
  background: var(--ink);
  transform-origin: left;
  transition: transform 500ms var(--ease), background 200ms ease;
}

.enter-btn:hover { color: var(--acid); }
.enter-btn:hover::after { background: var(--acid); transform: scaleX(1.06); }
.enter-btn .arrow {
  display: inline-block;
  transition: transform 360ms var(--ease);
}
.enter-btn:hover .arrow { transform: translateX(8px); }

/* ===== 右侧：真人小照片 + 手写注释 ===== */
.hero-right {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.portrait {
  width: clamp(220px, 28vw, 340px);
  aspect-ratio: 4 / 5;
  position: relative;
  transition: transform 600ms var(--ease);
}

.portrait::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--hairline);
  pointer-events: none;
}

.portrait img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(0.15) contrast(1.02);
}

.portrait-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-align: center;
  padding: 16px;
}

.portrait:hover { transform: rotate(-2deg); }

.handnote {
  position: absolute;
  font-family: var(--font-hand);
  color: var(--ink);
  font-weight: 600;
  font-size: clamp(20px, 1.8vw, 28px);
  line-height: 1.2;
  pointer-events: none;
  white-space: nowrap;
  transition: transform 360ms var(--ease);
}

.handnote--top {
  top: 6%;
  right: -6%;
  transform: rotate(6deg);
}

.handnote--bottom {
  bottom: -8%;
  left: -4%;
  transform: rotate(-3deg);
}

.handnote:hover { transform: rotate(2deg); }

/* ===== 底部状态行 ===== */
.statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 20px;
}

.statusbar .status-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--acid);
  margin-right: 8px;
  animation: pulse 1.6s ease-in-out infinite;
  vertical-align: middle;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

/* ============================================================
   FULLSCREEN MENU OVERLAY
   ============================================================ */

.menu-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 380ms var(--ease), visibility 380ms;
  display: flex;
  flex-direction: column;
  padding: 32px clamp(24px, 5vw, 72px);
}

.menu-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.menu-overlay__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.menu-close {
  background: transparent;
  border: none;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  letter-spacing: 0.04em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 4px;
}

.menu-close .close-x {
  display: inline-block;
  width: 26px;
  height: 26px;
  position: relative;
}

.menu-close .close-x::before,
.menu-close .close-x::after {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 100%; height: 1.5px;
  background: var(--ink);
  transition: background 200ms ease;
}
.menu-close .close-x::before { transform: rotate(45deg); }
.menu-close .close-x::after  { transform: rotate(-45deg); }

.menu-close:hover { color: var(--acid); }
.menu-close:hover .close-x::before,
.menu-close:hover .close-x::after { background: var(--acid); }

/* ===== 菜单列表 ===== */
.menu-list {
  list-style: none;
  margin: auto 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.menu-item {
  position: relative;
  border-top: 1px solid var(--hairline);
  padding: clamp(12px, 1.8vh, 22px) 0;
  display: flex;
  align-items: baseline;
  gap: 28px;
}

.menu-item:last-child {
  border-bottom: 1px solid var(--hairline);
}

.menu-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
  width: 48px;
  flex-shrink: 0;
  align-self: center;
}

.menu-item__link {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(56px, 11vw, 160px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--ink);
  display: inline-block;
  position: relative;
  transition: color 280ms var(--ease), transform 380ms var(--ease);
  cursor: pointer;
}

.menu-item__cn {
  font-family: var(--font-hand);
  font-style: normal;
  font-size: clamp(18px, 1.6vw, 26px);
  color: var(--muted);
  margin-left: auto;
  align-self: end;
  padding-bottom: 12px;
  letter-spacing: 0.02em;
  transition: color 280ms ease, transform 380ms var(--ease);
}

.menu-item:hover .menu-item__link {
  color: var(--acid);
  transform: translateX(clamp(12px, 2vw, 32px));
}

.menu-item:hover .menu-item__cn {
  color: var(--acid);
  transform: rotate(-3deg);
}

/* hover 时浮现一根手绘曲线 */
.menu-item__squiggle {
  position: absolute;
  left: 64px;
  bottom: 6px;
  width: clamp(180px, 24vw, 360px);
  height: 22px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 320ms var(--ease), transform 420ms var(--ease);
  color: var(--acid);
}

.menu-item__squiggle path {
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  transition: stroke-dashoffset 620ms var(--ease);
}

.menu-item:hover .menu-item__squiggle {
  opacity: 1;
  transform: translateY(0);
}

.menu-item:hover .menu-item__squiggle path {
  stroke-dashoffset: 0;
}

.menu-overlay__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 24px;
}

/* 入场：菜单项依次浮入 */
.menu-overlay.is-open .menu-item {
  animation: menuIn 600ms var(--ease) both;
}
.menu-overlay.is-open .menu-item:nth-child(1) { animation-delay: 80ms; }
.menu-overlay.is-open .menu-item:nth-child(2) { animation-delay: 160ms; }
.menu-overlay.is-open .menu-item:nth-child(3) { animation-delay: 240ms; }
.menu-overlay.is-open .menu-item:nth-child(4) { animation-delay: 320ms; }

@keyframes menuIn {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   响应式
   ============================================================ */

@media (max-width: 880px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-title .line:nth-child(2) { padding-left: 0; }
  .hero-right { justify-content: flex-start; }
  .handnote--top { right: 4%; }
  .menu-item { gap: 16px; flex-wrap: wrap; }
  .menu-item__cn { margin-left: 0; padding-bottom: 0; }
  .menu-item__squiggle { left: 0; }
}

/* ============================================================
   占位空白页（about / projects / playground）
   ============================================================ */

.page-blank {
  min-height: 100vh;
  padding: clamp(96px, 12vh, 132px) clamp(24px, 5vw, 72px) 40px;
  display: flex;
  flex-direction: column;
}

.blank-back {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  align-self: flex-start;
  margin-bottom: 32px;
  transition: color 200ms ease;
}
.blank-back:hover { color: var(--acid); }

.blank-main {
  margin: auto 0;
  max-width: 880px;
}

.blank-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 24px;
}

.blank-title {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1.05;
  letter-spacing: -0.012em;
  margin: 0 0 28px;
  white-space: nowrap;
}

.blank-note {
  font-size: 17px;
  color: rgba(44, 74, 110, 0.78);
  max-width: 56ch;
  line-height: 1.6;
}

/* ============================================================
   CUSTOM CURSOR
   ============================================================ */

@media (pointer: fine) {
  html, body, a, button, [role="button"], .menu-item, .portrait,
  .menu-btn, .menu-close, .enter-btn, .hero-title {
    cursor: none;
  }
}

.cursor {
  position: fixed;
  top: 0; left: 0;
  width: 0; height: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0;
  will-change: transform;
  mix-blend-mode: normal;
}

.cursor.is-ready { opacity: 1; }
.cursor.is-out { opacity: 0; }

.cursor__dot,
.cursor__ring {
  position: absolute;
  top: 0; left: 0;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 180ms var(--ease),
              height 180ms var(--ease),
              background 200ms ease,
              border-color 200ms ease,
              opacity 200ms ease;
}

.cursor__dot {
  width: 10px;
  height: 10px;
  background: var(--ink);
}

.cursor__ring {
  width: 0;
  height: 0;
  border: 1.5px solid var(--acid);
  background: transparent;
  opacity: 0;
}

/* hover 到任何可点击元素：圆点缩小 + 大圈出现 */
.cursor.is-hover .cursor__dot {
  width: 4px;
  height: 4px;
  background: var(--acid);
}

.cursor.is-hover .cursor__ring {
  width: 36px;
  height: 36px;
  opacity: 1;
}

/* 文字标签 */
.cursor__label {
  position: absolute;
  top: 0; left: 22px;
  transform: translateY(-50%);
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--surface);
  padding: 6px 10px;
  border: 1px solid var(--acid);
  opacity: 0;
  transition: opacity 180ms var(--ease), transform 220ms var(--ease);
  pointer-events: none;
}

.cursor.is-hover.has-label .cursor__label {
  opacity: 1;
  transform: translate(8px, -50%);
  left: 22px;
}

/* 触屏设备 hide */
@media (pointer: coarse) {
  .cursor { display: none; }
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */

.about-page {
  padding-bottom: 0;
}

.about-page .brand { cursor: pointer; }

/* ===== about hero ===== */
.about-hero {
  padding: clamp(28px, 6vh, 72px) 0 clamp(40px, 7vh, 80px);
  position: relative;
  border-bottom: 1px solid var(--hairline);
}

.about-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 28px;
}

.about-headline {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(54px, 8.4vw, 120px);
  line-height: 1;
  letter-spacing: -0.015em;
  margin: 0;
}

.about-headline .line {
  display: block;
}
.about-headline .line:nth-child(2) { padding-left: clamp(40px, 10vw, 180px); }
.about-headline .line:nth-child(3) { padding-left: clamp(20px, 5vw, 80px); }

.about-headline em {
  font-style: italic;
  background-image: linear-gradient(transparent 72%, var(--acid) 72%, var(--acid) 96%, transparent 96%);
  background-repeat: no-repeat;
  padding: 0 0.04em;
}

.about-byline {
  margin: clamp(28px, 5vh, 56px) 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ===== block 通用 ===== */
.about-block {
  padding: clamp(56px, 9vh, 120px) 0;
  border-bottom: 1px solid var(--hairline);
  position: relative;
}

.about-block:last-of-type {
  border-bottom: 0;
}

.about-block__head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: clamp(24px, 4vh, 48px);
}

.about-block__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.about-block__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ===== self-eval 大段引用 ===== */
.about-block__content {
  display: grid;
  gap: 32px;
  align-items: start;
}

@media (min-width: 768px) {
  .about-block__content {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
}

.about-block__text {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(22px, 2.4vw, 34px);
  line-height: 1.45;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.about-block__text p {
  margin: 0;
}

.about-block__image {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.about-block__image img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(44, 74, 110, 0.15);
}

.about-pull {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(22px, 2.4vw, 34px);
  line-height: 1.45;
  letter-spacing: -0.005em;
  color: var(--ink);
  max-width: 32ch;
}

.about-pull em {
  font-style: italic;
  background-image: linear-gradient(transparent 72%, var(--acid) 72%, var(--acid) 96%, transparent 96%);
  background-repeat: no-repeat;
  padding: 0 0.04em;
}

/* ===== about 段落正文 ===== */
.about-prose {
  display: grid;
  grid-template-columns: minmax(0, 56ch);
  gap: 12px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(44, 74, 110, 0.92);
}

.about-prose p { margin: 0; }
.about-prose strong {
  font-weight: 600;
  background-image: linear-gradient(transparent 78%, var(--acid) 78%, var(--acid) 96%, transparent 96%);
  background-repeat: no-repeat;
  padding: 0 0.04em;
}

.about-prose__lead {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(18px, 1.6vw, 22px);
  margin: 0 0 18px;
  color: var(--ink);
  line-height: 1.6;
}

.about-prose__lead em { font-style: italic; }

/* 02 区右上角的小插画位 */
.about-illust {
  position: absolute;
  top: clamp(48px, 8vh, 100px);
  right: 0;
  width: clamp(180px, 22vw, 260px);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

/* 左上角小圆点装饰 */
.about-illust__dot {
  position: absolute;
  top: -3px;
  left: -3px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #95C2E2;
  z-index: 2;
  pointer-events: none;
}

/* 右下角手绘细线 */
.about-illust__line {
  position: absolute;
  width: 80px;
  height: 24px;
  right: -28px;
  bottom: -16px;
  pointer-events: none;
}

.about-illust__frame {
  width: 100%;
  aspect-ratio: 4/5;
  background: var(--surface);
  border: 1px solid var(--acid);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s var(--ease);
}

.about-illust__frame:hover {
  transform: rotate(1.5deg);
}

.about-illust__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-illust__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  line-height: 1.6;
}

.about-illust__cap { display: none; }

/* ===== timeline ===== */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.timeline__subhead {
  margin: 32px 0 0;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(18px, 1.8vw, 24px);
  color: var(--ink);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hairline);
}

.timeline__item {
  display: grid;
  grid-template-columns: clamp(140px, 18vw, 220px) 1fr;
  gap: clamp(20px, 4vw, 56px);
  padding: clamp(24px, 4vh, 40px) 0;
  border-top: 1px solid var(--hairline);
}

.timeline__item:last-child { border-bottom: 1px solid var(--hairline); }

.timeline__dates {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--muted);
  padding-top: 6px;
}

.timeline__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.timeline__name__en {
  display: block;
  font-family: var(--font-body);
  font-style: normal;
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-top: 6px;
}

.timeline__sub {
  margin: 0 0 14px;
  font-size: 15px;
  color: rgba(44, 74, 110, 0.86);
  line-height: 1.7;
}

.timeline__quote {
  margin: 14px 0 16px;
  padding: 0 0 0 20px;
  border-left: 2px solid var(--acid);
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.55;
  color: var(--ink);
  max-width: 44ch;
}

.timeline__link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  border: 0;
  border-bottom: 1px solid var(--acid);
  padding: 0 0 2px;
  background: transparent;
  cursor: pointer;
  display: inline-block;
  transition: color 200ms ease, border-color 200ms ease;
}

.timeline__link:hover {
  color: var(--acid);
  border-color: var(--ink);
}

.timeline__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.7;
}

.timeline__list__role {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  color: var(--ink);
}

.timeline__list__meta {
  color: rgba(44, 74, 110, 0.78);
}

/* ===== skill list ===== */
.skill-list {
  margin: 0;
  display: flex;
  flex-direction: column;
}

.skill-list__row {
  display: grid;
  grid-template-columns: clamp(140px, 18vw, 220px) 1fr;
  gap: clamp(20px, 4vw, 56px);
  align-items: baseline;
  padding: 18px 0;
  border-top: 1px solid var(--hairline);
}

.skill-list__row:last-child { border-bottom: 1px solid var(--hairline); }

.skill-list dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}

.skill-list dd {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(16px, 1.4vw, 20px);
  line-height: 1.5;
  color: var(--ink);
}

/* ===== work in progress ===== */
.wip-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.wip-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
  border-top: 1px solid var(--hairline);
}

.wip-list li:last-child { border-bottom: 1px solid var(--hairline); }

.wip-list__name {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(18px, 1.7vw, 22px);
  color: var(--ink);
}

.wip-list__status {
  font-family: var(--font-hand);
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--ink);
  background: var(--surface);
  padding: 4px 12px;
  border: 1px solid var(--acid);
  transform: rotate(-1.5deg);
  white-space: nowrap;
}

.about-page .statusbar {
  border-top: 1px solid var(--hairline);
  padding: clamp(24px, 4vh, 40px) 0;
}

/* ===== about page 响应式 ===== */
@media (max-width: 880px) {
  .about-headline .line:nth-child(2) { padding-left: 0; }
  .about-headline .line:nth-child(3) { padding-left: 0; }
  .about-illust {
    position: relative;
    top: auto; right: auto;
    width: 60%;
    margin: 32px 0 0 auto;
  }
  .timeline__item,
  .skill-list__row { grid-template-columns: 1fr; gap: 6px; }
  .timeline__dates { padding-top: 0; }
  .wip-list li { flex-wrap: wrap; }
}

/* ============================================================
   CERT LIGHTBOX
   ============================================================ */

.cert-lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 280ms var(--ease), visibility 280ms;
}

.cert-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.cert-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(44, 74, 110, 0.78);
  backdrop-filter: blur(4px);
  cursor: pointer;
}

.cert-lightbox__frame {
  position: relative;
  margin: 0;
  max-width: min(82vw, 920px);
  max-height: 86vh;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.cert-lightbox__frame img {
  max-width: 100%;
  max-height: 86vh;
  display: block;
  background: var(--surface);
  border: 1px solid var(--acid);
  transition: transform 320ms var(--ease);
  transform-origin: center;
}

/* 旋转 90° 时按高度限制宽度，避免溢出 */
.cert-lightbox__frame img.is-rotated {
  max-width: 86vh;
  max-height: min(82vw, 920px);
}

.cert-lightbox__close {
  position: fixed;
  top: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--ink);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: background 200ms ease, color 200ms ease, border-color 200ms ease;
}

.cert-lightbox__close .close-x {
  display: inline-block;
  width: 18px;
  height: 18px;
  position: relative;
}

.cert-lightbox__close .close-x::before,
.cert-lightbox__close .close-x::after {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 100%; height: 1.5px;
  background: var(--ink);
  transition: background 200ms ease;
}
.cert-lightbox__close .close-x::before { transform: rotate(45deg); }
.cert-lightbox__close .close-x::after  { transform: rotate(-45deg); }

.cert-lightbox__close:hover {
  background: var(--ink);
  color: var(--surface);
  border-color: var(--ink);
}
.cert-lightbox__close:hover .close-x::before,
.cert-lightbox__close:hover .close-x::after {
  background: var(--surface);
}

/* ============================================================
   PROJECTS PAGE
   ============================================================ */

.projects-page {
  min-height: 100vh;
  padding: clamp(96px, 12vh, 132px) clamp(24px, 5vw, 96px) 0;
  display: flex;
  flex-direction: column;
}

/* ===== hero ===== */
.proj-hero {
  padding: clamp(24px, 5vh, 64px) 0 clamp(56px, 10vh, 120px);
  border-bottom: 1px solid #A6D0F1;
}

.proj-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 24px;
}

.proj-hero__title {
  font-family: "Fraunces", var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(54px, 8.4vw, 120px);
  line-height: 1;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--ink);
}

.proj-hero__title em {
  font-style: italic;
  background-image: linear-gradient(transparent 72%, var(--acid) 72%, var(--acid) 96%, transparent 96%);
  background-repeat: no-repeat;
  padding: 0 0.04em;
}

.proj-hero__lede {
  margin: clamp(28px, 5vh, 56px) 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(44, 74, 110, 0.86);
  max-width: 38ch;
}

/* ===== single project ===== */
.proj {
  min-height: 100vh;
  padding: clamp(56px, 10vh, 120px) 0 clamp(56px, 10vh, 120px);
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(0, 1.4fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
  border-bottom: 1px solid #A6D0F1;
}

.proj:last-of-type { border-bottom: 0; }

/* ===== left: head ===== */
.proj__head {
  position: sticky;
  top: clamp(96px, 12vh, 132px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.proj__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.proj__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  line-height: 1.6;
}

.proj__title {
  font-family: "Fraunces", var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(34px, 4.4vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.012em;
  margin: 4px 0 0;
  color: var(--ink);
}

.proj__meta {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid #A6D0F1;
  padding-top: 18px;
}

.proj__meta li {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 12px;
  font-size: 14px;
  line-height: 1.6;
  align-items: baseline;
}

.proj__meta li span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.proj__meta li b {
  font-weight: 500;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 16px;
  color: var(--ink);
}

/* "进行中" chip */
.proj__chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--acid);
  padding: 4px 10px;
}

/* ===== right: body ===== */
.proj__body {
  font-size: 16px;
  line-height: 1.85;
  color: rgba(44, 74, 110, 0.92);
  max-width: 64ch;
}

.proj__body > p {
  margin: 0 0 18px;
}

.proj__steps {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.proj__steps > li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 18px;
  align-items: baseline;
  padding-top: 18px;
  border-top: 1px solid #A6D0F1;
}

.proj__steps > li:first-child { border-top: 0; padding-top: 0; }

.proj__steps__num {
  font-family: "Fraunces", var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: 28px;
  line-height: 1;
  color: var(--ink);
}

.proj__steps h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 600;
  font-size: 18px;
  color: var(--ink);
}

.proj__steps p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(44, 74, 110, 0.88);
}

/* ===== pull quote ===== */
.proj__pull {
  margin: 28px 0 0;
  padding: 6px 0 6px 22px;
  border-left: 2px solid var(--acid);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 56ch;
}

.proj__pull p { margin: 0; }
.proj__pull strong {
  font-weight: 600;
  font-style: italic;
  color: var(--ink);
}

.proj__pull--quiet {
  border-left-color: var(--muted);
  color: rgba(44, 74, 110, 0.78);
  font-size: 15px;
}

/* ===== 工具链单行 ===== */
.proj__toolchain {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--ink);
  display: flex;
  gap: 14px;
  align-items: baseline;
}

.proj__toolchain span {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ===== 踩坑记录折叠块 ===== */
.proj__pitfalls {
  margin: 24px 0 18px;
  background: var(--surface);
  border: 1px solid var(--hairline);
  padding: 0;
}

.proj__pitfalls summary {
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

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

.proj__pitfalls summary::before {
  content: '▸ ';
  display: inline-block;
  margin-right: 8px;
  transition: transform 180ms var(--ease);
}

.proj__pitfalls[open] summary::before {
  transform: rotate(90deg);
}

.proj__pitfalls__content {
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.proj__pitfalls__content h4 {
  margin: 16px 0 8px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.proj__pitfalls__content p {
  margin: 8px 0;
}

.proj__pitfalls__img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 16px 0;
  border: 1px solid var(--hairline);
  border-radius: 4px;
}

/* ===== 项目附件块 ===== */
.proj__pull--files {
  font-style: normal;
  font-family: var(--font-body);
  font-size: 15px;
  border-left-color: var(--acid);
}

.proj__pull--files p {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
}

.proj__files-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.proj__pull--files a {
  color: var(--ink);
  border-bottom: 1px solid var(--acid);
  padding-bottom: 1px;
  transition: color 200ms ease, border-color 200ms ease;
}

.proj__pull--files a:hover {
  color: var(--acid);
  border-color: var(--ink);
}

.proj__files-sep {
  color: var(--muted);
}

.proj__files-note {
  margin: 8px 0 0;
  font-size: 13px;
  font-style: italic;
  color: #6B8FA8;
  letter-spacing: 0.01em;
}

.proj__files-hint {
  margin: 6px 0 0;
  font-size: 12px;
  font-style: normal;
  color: #6B8FA8;
  letter-spacing: 0.01em;
}

/* ===== next link 共用 ===== */
.next-link {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  color: var(--ink);
  font-family: "Fraunces", var(--font-display);
  font-style: italic;
  font-size: 32px;
  line-height: 1.15;
  letter-spacing: -0.01em;
  transition: color 220ms var(--ease);
  padding-bottom: 16px;
}

.next-link em {
  font-style: italic;
  background-image: linear-gradient(transparent 72%, var(--acid) 72%, var(--acid) 96%, transparent 96%);
  background-repeat: no-repeat;
  padding: 0 0.04em;
}

.next-link__squiggle {
  width: clamp(180px, 24vw, 360px);
  height: 22px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 280ms var(--ease), transform 360ms var(--ease);
  color: var(--acid);
}

.next-link__squiggle path {
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  transition: stroke-dashoffset 620ms var(--ease);
}

.next-link:hover { color: var(--acid); }
.next-link:hover .next-link__squiggle { opacity: 1; transform: translateY(0); }
.next-link:hover .next-link__squiggle path { stroke-dashoffset: 0; }

.next-link--disabled { pointer-events: none; }

.next-nav {
  padding: clamp(48px, 7vh, 88px) 0 clamp(40px, 6vh, 72px);
  border-top: 1px solid #A6D0F1;
  margin-top: clamp(40px, 6vh, 72px);
}

/* ============================================================
   PLAYGROUND PAGE
   ============================================================ */

.play-page {
  min-height: 100vh;
  padding: clamp(96px, 12vh, 132px) clamp(24px, 5vw, 96px) 0;
  display: flex;
  flex-direction: column;
}

/* ===== intro ===== */
.play-intro {
  padding: clamp(24px, 5vh, 56px) 0 clamp(48px, 8vh, 96px);
  border-bottom: 1px solid #A6D0F1;
}

.play-intro__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 28px;
}

.play-intro__quote {
  margin: 0;
  padding: 0;
  border: 0;
  font-family: "Fraunces", var(--font-display);
  font-style: italic;
  font-size: clamp(28px, 3.2vw, 44px);
  line-height: 1.35;
  color: var(--ink);
  max-width: 28ch;
  letter-spacing: -0.01em;
}

/* ===== block 通用 ===== */
.play-block {
  padding: clamp(48px, 8vh, 96px) 0;
  border-bottom: 1px solid #A6D0F1;
}

.play-block:last-of-type { border-bottom: 0; }

.play-block__head {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: clamp(24px, 4vh, 40px);
}

.play-block__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.play-block__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}

/* ===== traits 散排版 ===== */
.play-scatter {
  padding: clamp(48px, 8vh, 96px) 0;
  border-bottom: 1px solid #A6D0F1;
}

.play-scatter__head {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: clamp(48px, 6vh, 72px);
}

.play-scatter__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.play-scatter__eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}

.play-scatter__items {
  position: relative;
  min-height: 400px;
  max-width: 900px;
}

.play-scatter__item {
  position: absolute;
  max-width: 320px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 320ms var(--ease);
}

.play-scatter__item p {
  margin: 0;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.7;
  color: var(--ink);
  font-family: var(--font-body);
}

.play-scatter__item strong {
  font-weight: 600;
}

.play-scatter__item--1 {
  top: 0;
  left: 5%;
  transform: rotate(-1.5deg);
  font-size: 18px;
}

.play-scatter__item--2 {
  top: 140px;
  right: 8%;
  transform: rotate(2deg);
  font-size: 16px;
}

.play-scatter__item--3 {
  top: 280px;
  left: 15%;
  transform: rotate(-0.8deg);
  font-size: 17px;
}

.play-scatter__item:hover {
  transform: rotate(0deg) scale(1.02);
}

.play-scatter__doodle {
  align-self: flex-start;
  opacity: 0.8;
}

/* ===== 小红书板块 ===== */
.play-xhs {
  max-width: 640px;
}

.play-xhs__desc {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.play-xhs__note {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  padding-left: 20px;
  border-left: 2px solid var(--hairline);
}

/* ===== 横向滚动照片带 ===== */
.play-marquee {
  width: 100%;
  overflow: hidden;
  margin-top: 8px;
}

.play-marquee__track {
  display: flex;
  gap: 20px;
  animation: marqueeScroll 20s linear infinite;
  will-change: transform;
}

.play-marquee:hover .play-marquee__track {
  animation-play-state: paused;
}

@keyframes marqueeScroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.play-marquee__photo {
  flex-shrink: 0;
}

.play-marquee__frame {
  width: 280px;
  height: 360px;
  background: var(--surface);
  border: 12px solid var(--surface);
  border-radius: 4px;
  box-shadow: 0 2px 12px rgba(44, 74, 110, 0.08);
  overflow: hidden;
  transition: transform 320ms var(--ease), box-shadow 280ms ease;
  position: relative;
}

.play-marquee__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.play-marquee__frame:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px rgba(44, 74, 110, 0.15);
}

.play-marquee__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-align: center;
  background: rgba(149, 194, 226, 0.08);
}

@media (max-width: 880px) {
  .play-scatter__items {
    position: static;
    min-height: auto;
    display: flex;
    flex-direction: column;
    gap: 32px;
  }

  .play-scatter__item {
    position: static !important;
    transform: none !important;
    max-width: 100%;
  }

  .play-marquee__frame {
    width: 220px;
    height: 280px;
    border-width: 10px;
  }

  .play-marquee__track {
    gap: 16px;
  }
}

/* ============================================================
   COPY TOAST (邮箱复制提示)
   ============================================================ */

.copy-toast {
  position: fixed;
  bottom: 40px;
  right: 40px;
  background: var(--ink);
  color: var(--surface);
  padding: 16px 24px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  z-index: 9999;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 280ms var(--ease), transform 320ms var(--ease);
  pointer-events: none;
  box-shadow: 0 4px 16px rgba(44, 74, 110, 0.2);
}

.copy-toast.is-show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 880px) {
  .copy-toast {
    bottom: 24px;
    right: 24px;
    left: 24px;
    font-size: 12px;
    padding: 14px 20px;
  }
}

/* ===== 世界地图 ===== */
.play-world-map {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.play-world-map__container {
  width: 100%;
  height: 600px;
  background: transparent;
  border: 1px solid var(--hairline);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  cursor: grab;
}

.play-world-map__container:active {
  cursor: grabbing;
}

/* 视口层：承载 transform */
.play-world-map__viewport {
  width: 100%;
  height: 100%;
  position: relative;
  transform-origin: 0 0;
  will-change: transform;
  transition: transform 0.2s ease-out;
}

/* 图片包裹层：确保热区和图片严格对齐 */
.play-world-map__image-wrapper {
  position: relative;
  width: 100%;
  display: block;
}

/* 地图图片 */
.play-world-map__img {
  display: block;
  width: 100%;
  height: auto;
  user-select: none;
  pointer-events: none;
}

/* 热区层：覆盖在图片上，使用百分比定位 */
.play-world-map__hotspots {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 单个热区 */
.play-world-map__hotspot {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  pointer-events: auto;
  transition: all 0.2s var(--ease);
}

/* 重点城市热区 */
.play-world-map__hotspot--major {
  background: #95C2E2;
  opacity: 0.8;
}

.play-world-map__hotspot--major:hover {
  width: 20px;
  height: 20px;
  opacity: 1;
  box-shadow: 0 0 12px rgba(149, 194, 226, 0.6);
}

/* 普通地点热区 */
.play-world-map__hotspot--minor {
  background: #A6D0F1;
  opacity: 0.7;
  width: 12px;
  height: 12px;
}

.play-world-map__hotspot--minor:hover {
  width: 16px;
  height: 16px;
  opacity: 1;
  box-shadow: 0 0 8px rgba(166, 208, 241, 0.5);
}

/* 圆点 */
.play-map-pin__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #95C2E2;
  cursor: pointer;
  transition: all 220ms var(--ease);
  box-shadow: 0 2px 4px rgba(44, 74, 110, 0.15);
}

.play-map-pin--minor .play-map-pin__dot {
  width: 5px;
  height: 5px;
  background: #A6D0F1;
}

.play-map-pin--major:hover .play-map-pin__dot {
  width: 12px;
  height: 12px;
  background: #2C4A6E;
  transform: scale(1.1);
}

.play-map-pin--minor:hover .play-map-pin__dot {
  width: 8px;
  height: 8px;
  background: #2C4A6E;
}

/* 重点城市卡片 */
.play-map-pin__card {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 200px;
  background: var(--surface);
  border: 1px solid var(--acid);
  padding: 12px 14px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms var(--ease), transform 280ms var(--ease), visibility 220ms;
  pointer-events: none;
  box-shadow: 0 8px 20px rgba(44, 74, 110, 0.12);
  z-index: 20;
}

.play-map-pin--major:hover .play-map-pin__card {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.play-map-pin__card h4 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.play-map-pin__card p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink);
}

/* 小地点标签 */
.play-map-pin__label {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--ink);
  color: var(--surface);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms var(--ease), transform 240ms var(--ease), visibility 200ms;
  pointer-events: none;
  border-radius: 2px;
  white-space: nowrap;
  z-index: 15;
}

.play-map-pin--minor:hover .play-map-pin__label {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.play-world-map__controls {
  position: absolute;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 10;
}

.play-world-map__btn {
  width: 40px;
  height: 40px;
  background: var(--surface);
  border: 1px solid var(--hairline);
  color: var(--ink);
  font-size: 24px;
  font-weight: 300;
  line-height: 1;
  cursor: pointer;
  transition: background 200ms ease, border-color 200ms ease, transform 200ms var(--ease);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
}

.play-world-map__btn:hover {
  background: var(--bg);
  border-color: var(--acid);
  transform: scale(1.05);
}

.play-world-map__btn:active {
  transform: scale(0.95);
}

/* 地图热区样式 */
.map-hotspot {
  position: absolute;
  width: 12px;
  height: 12px;
  background: #A6D0F1;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  pointer-events: auto;
  opacity: 0.7;
  transition: all 0.2s var(--ease);
}

.map-hotspot:hover {
  width: 16px;
  height: 16px;
  opacity: 1;
  box-shadow: 0 0 8px rgba(166, 208, 241, 0.5);
}

.map-hotspot--featured {
  width: 16px;
  height: 16px;
  background: #95C2E2;
  opacity: 0.8;
}

.map-hotspot--featured:hover {
  width: 20px;
  height: 20px;
  opacity: 1;
  box-shadow: 0 0 12px rgba(149, 194, 226, 0.6);
}

/* Tooltip 样式 */
.map-tooltip {
  position: fixed;
  background: var(--surface);
  border: 1px solid var(--acid);
  padding: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.2s var(--ease);
  max-width: 280px;
  box-shadow: 0 8px 20px rgba(44, 74, 110, 0.12);
}

.map-tooltip.is-visible {
  opacity: 1;
}

.map-tooltip__photo {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}

.map-tooltip__text {
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
}

.map-tooltip__text strong {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.map-tooltip__text span {
  font-size: 13px;
  color: var(--ink);
  opacity: 0.85;
}

/* 旧地图样式保留（以防需要） */
.play-map {
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
}

.play-map__svg {
  width: 100%;
  height: auto;
  display: block;
  background: transparent;
}

.play-map__pin {
  cursor: pointer;
  transition: r 220ms var(--ease), fill 200ms ease, stroke-width 200ms ease;
}

.play-map__pin--major {
  filter: drop-shadow(0 1px 2px rgba(44, 74, 110, 0.15));
}

.play-map__pin--major:hover {
  r: 12;
  fill: #2C4A6E;
}

.play-map__pin--minor:hover {
  r: 8;
  fill: #2C4A6E;
}

/* 重点城市卡片 */
.play-map__card {
  position: absolute;
  top: 0;
  left: 0;
  width: 220px;
  background: var(--surface);
  border: 1px solid var(--acid);
  padding: 16px;
  z-index: 20;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, calc(-100% - 20px)) translateY(8px);
  transition: opacity 220ms var(--ease), transform 280ms var(--ease), visibility 220ms;
  pointer-events: none;
  box-shadow: 0 8px 24px rgba(44, 74, 110, 0.12);
}

.play-map__card.is-show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, calc(-100% - 20px)) translateY(0);
}

.play-map__card-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.play-map__card-text {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink);
}

.play-map__card-photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: rgba(149, 194, 226, 0.12);
  border: 1px dashed var(--hairline);
  display: flex;
  align-items: center;
  justify-content: center;
}

.play-map__card-placeholder {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* 小地点 tooltip */
.play-map__tooltip {
  position: absolute;
  top: 0;
  left: 0;
  background: var(--ink);
  color: var(--surface);
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  z-index: 15;
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, calc(-100% - 12px)) translateY(4px);
  transition: opacity 200ms var(--ease), transform 240ms var(--ease), visibility 200ms;
  pointer-events: none;
  border-radius: 2px;
  white-space: nowrap;
}

.play-map__tooltip.is-show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, calc(-100% - 12px)) translateY(0);
}

.play-map-placeholder {
  max-width: 800px;
  aspect-ratio: 2 / 1;
  background: var(--surface);
  border: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.play-map-placeholder__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.play-map-placeholder__icon {
  font-size: 48px;
  opacity: 0.6;
}

.play-map-placeholder__text {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ===== grid ===== */
/* 已移除，改用 collage 拼贴布局 */

/* ===== bottom footer ===== */
.play-foot {
  padding: clamp(56px, 10vh, 120px) 0 clamp(48px, 8vh, 96px);
  border-top: 1px solid #A6D0F1;
  margin-top: clamp(40px, 6vh, 72px);
}

/* ===== 底部 teaser ===== */
.proj__teaser {
  margin: 0;
  padding: clamp(40px, 6vh, 72px) 0 clamp(8px, 1vh, 16px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
}

/* ===== bottom next ===== */
.proj-foot {
  padding: clamp(56px, 10vh, 120px) 0;
  border-top: 1px solid #A6D0F1;
}

.proj-foot__next {
  display: inline-flex;
  flex-direction: column;
  gap: 8px;
  color: var(--ink);
  transition: color 240ms var(--ease);
}

.proj-foot__next__small {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.proj-foot__next__big {
  font-family: "Fraunces", var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1;
}
.proj-foot__next__big em {
  background-image: linear-gradient(transparent 72%, var(--acid) 72%, var(--acid) 96%, transparent 96%);
  background-repeat: no-repeat;
  padding: 0 0.04em;
}

.proj-foot__next__hint {
  font-family: var(--font-hand);
  font-size: 22px;
  color: var(--ink);
  transform: rotate(-2deg);
  align-self: flex-start;
  margin-top: 4px;
}

.proj-foot__next:hover { color: var(--acid); }

/* ===== 响应式 ===== */
@media (max-width: 880px) {
  .proj {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 80px 0;
  }
  .proj__head {
    position: static;
    top: auto;
  }
}

/* ============================================================
   PDF MODAL
   ============================================================ */

.pdf-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 300ms var(--ease), visibility 300ms;
}

.pdf-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.pdf-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(44, 74, 110, 0.85);
  backdrop-filter: blur(6px);
  cursor: pointer;
}

.pdf-modal__content {
  position: relative;
  width: 90vw;
  height: 90vh;
  max-width: 1200px;
  background: var(--surface);
  border: 1px solid var(--acid);
  z-index: 1;
  display: flex;
  flex-direction: column;
}

.pdf-modal__close {
  position: absolute;
  top: -48px;
  right: 0;
  width: 44px;
  height: 44px;
  border: 1px solid var(--surface);
  background: var(--surface);
  color: var(--ink);
  font-size: 32px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: background 200ms ease, color 200ms ease, border-color 200ms ease;
  font-family: var(--font-body);
  padding: 0;
}

.pdf-modal__close:hover {
  background: var(--ink);
  color: var(--surface);
  border-color: var(--ink);
}

.pdf-modal__iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

@media (max-width: 880px) {
  .pdf-modal__content {
    width: 95vw;
    height: 85vh;
  }
  .pdf-modal__close {
    top: -42px;
    width: 40px;
    height: 40px;
    font-size: 28px;
  }
}