/* ══════════════════════════════════════════════════════════════
   摄影作品集 · 设计系统
   黑金 · 胶片 · 快门 · 启动序幕
   ══════════════════════════════════════════════════════════════ */

:root {
  /* ── 色彩：纯黑底 + 金色高亮，是"高级感"的核心配方 ── */
  --bg: #050505;
  --bg-2: #0a0a0a;
  --bg-3: #111111;
  --ink: #f5f4f1;
  --ink-dim: #a09d97;
  --ink-faint: #6a6862;
  --line: rgba(245, 244, 241, 0.1);
  --line-2: rgba(245, 244, 241, 0.18);

  /* 金色：sparsely 用，只在关键处点睛 */
  --gold: #c9a558;
  --gold-soft: rgba(201, 165, 88, 0.14);
  --gold-line: rgba(201, 165, 88, 0.32);

  /* ── 字体：思源宋体做标题（气韵），无衬线做 UI（清晰） ── */
  --font-display: "NSSC FS", "Noto Serif SC", "Source Han Serif SC",
    "Songti SC", "SimSun", serif;
  --font-ui: "Manrope", "Geist", system-ui, -apple-system,
    "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;

  /* ── 动效曲线 ── */
  --ease-dramatic: cubic-bezier(0.87, 0, 0.13, 1);
  --ease-expo-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --dur: 0.7s;
  --dur-fast: 0.28s;

  --gutter: clamp(1.25rem, 4.5vw, 4.5rem);
  --header-h: 4.5rem;
  --section-gap: clamp(5rem, 13vh, 11rem);
}

/* ═══════════ 基础重置 ═══════════ */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  /* 字号系统：原上界 17px 太小，大屏上正文偏小。
     改为 16 → 19.5px，并把斜率提到 0.32vw，
     保证 1280px 起就有 17.5px+，1920px 上约 19px。 */
  font-size: clamp(1rem, 0.94rem + 0.32vw, 1.219rem);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: #2a2a2a;
  border-radius: 99px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: #3d3d3d; }

img {
  display: block;
  max-width: 100%;
  height: auto;
  background: var(--bg-2);
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 4px;
}

::selection { background: var(--gold); color: var(--bg); }

/* ═══════════ 排印 ═══════════ */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.eyebrow--gold { color: var(--gold); }

.display {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 9vw, 7rem);
  line-height: 1;
  letter-spacing: -0.03em;
  font-weight: 400;
}

.title-lg {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3.25rem);
  letter-spacing: -0.02em;
  line-height: 1.14;
}

.title-md {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  letter-spacing: -0.01em;
}

.lede {
  font-size: clamp(1rem, 1.4vw, 1.1875rem);
  line-height: 1.85;
  color: var(--ink-dim);
  max-width: 44ch;
}

.muted { color: var(--ink-dim); }
.faint { color: var(--ink-faint); }
.gold { color: var(--gold); }

/* ═══════════ 布局 ═══════════ */

.shell {
  width: 100%;
  max-width: 1720px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

/* ═══════════ 胶片颗粒（全屏覆盖）═══════════ */

.grain {
  position: fixed;
  inset: -50%;
  z-index: 60;
  pointer-events: none;
  opacity: 0.032;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain-shift 6s steps(6) infinite;
}

@keyframes grain-shift {
  0% { transform: translate(0, 0); }
  16% { transform: translate(-3%, 4%); }
  33% { transform: translate(4%, -3%); }
  50% { transform: translate(-2%, -4%); }
  66% { transform: translate(3%, 3%); }
  83% { transform: translate(-4%, 2%); }
  100% { transform: translate(0, 0); }
}

/* ═══════════ 启动序幕 ═══════════ */

.boot {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: grid;
  place-items: center;
  background: var(--bg);
  animation: boot-curtain 2.1s var(--ease-dramatic) both;
  /* 动画结束后彻底移出渲染层，不拦截点击。
     不能只靠 keyframes 里的 visibility —— 它的插值行为不可靠，
     会留下一个看不见但仍挡屏幕的黑层。*/
  animation-fill-mode: both, forwards;
}

@keyframes boot-curtain {
  0%, 55% { opacity: 1; visibility: visible; }
  99.9% { opacity: 0; visibility: visible; }
  100% { opacity: 0; visibility: hidden; pointer-events: none; }
}

.boot__blades {
  position: absolute;
  width: min(62vmin, 460px);
  aspect-ratio: 1;
  animation: boot-blades 2.1s var(--ease-dramatic) both;
}

.boot__blade {
  position: absolute;
  inset: 0;
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  background: #0d0d0d;
  transform-origin: 50% 50%;
}
.boot__blade:nth-child(1) { transform: rotate(0deg); }
.boot__blade:nth-child(2) { transform: rotate(60deg); }
.boot__blade:nth-child(3) { transform: rotate(120deg); }
.boot__blade:nth-child(4) { transform: rotate(180deg); }
.boot__blade:nth-child(5) { transform: rotate(240deg); }
.boot__blade:nth-child(6) { transform: rotate(300deg); }

@keyframes boot-blades {
  0% { clip-path: inset(50% 50% 50% 50%); }
  40%, 100% { clip-path: inset(0 0 0 0); }
}

.boot__glow {
  position: absolute;
  width: min(62vmin, 460px);
  aspect-ratio: 1;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(201, 165, 88, 0.5) 0%,
    rgba(201, 165, 88, 0.12) 28%,
    transparent 62%
  );
  animation: boot-glow 2.1s ease-out both;
}

@keyframes boot-glow {
  0% { opacity: 0; transform: scale(0.4); }
  45% { opacity: 1; transform: scale(1); }
  100% { opacity: 0.5; transform: scale(1.3); }
}

.boot__title {
  position: relative;
  z-index: 2;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.5vw, 3rem);
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  animation: boot-title 2.1s ease-out both;
}

@keyframes boot-title {
  0%, 25% { opacity: 0; letter-spacing: 0.6em; }
  50%, 75% { opacity: 1; letter-spacing: 0.3em; }
  100% { opacity: 0; letter-spacing: 0.24em; }
}

.boot__sub {
  position: absolute;
  bottom: 12%;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  animation: boot-title 2.1s ease-out 0.15s both;
}

/* ═══════════ 胶片条 ═══════════ */

.filmstrip {
  position: relative;
  overflow: hidden;
  background: #000;
  z-index: 40;
}

.filmstrip__sprockets {
  height: 16px;
  background-image: radial-gradient(
    ellipse 4.5px 3px at center,
    rgba(255, 255, 255, 0.16) 98%,
    transparent 100%
  );
  background-size: 26px 16px;
  background-repeat: repeat-x;
  background-position: center;
}

.filmstrip__track {
  display: flex;
  width: max-content;
  animation: film-roll 68s linear infinite;
}

.filmstrip--bottom .filmstrip__track { animation-direction: reverse; }

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

.filmstrip__frame {
  width: clamp(90px, 11vw, 168px);
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-inline: 1px solid rgba(255, 255, 255, 0.08);
  flex: none;
}

.filmstrip__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.1) brightness(0.82);
  transition: filter 0.6s var(--ease-smooth);
}

.filmstrip__frame:hover img {
  filter: grayscale(0) contrast(1) brightness(1);
}

/* ═══════════ 顶栏 ═══════════ */

.hdr {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: linear-gradient(
    to bottom,
    rgba(5, 5, 5, 0.9) 0%,
    rgba(5, 5, 5, 0.6) 60%,
    transparent 100%
  );
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.hdr__in {
  width: 100%;
  max-width: 1720px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.hdr__brand {
  font-family: var(--font-display);
  font-size: 1.1875rem;
  letter-spacing: 0.18em;
  white-space: nowrap;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  /* 「家源」二字用金色 */
  color: var(--gold);
}

.hdr__brand em {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  /* 拼音用白色（带透明度，避免过于抢眼） */
  color: rgba(245, 244, 241, 0.72);
}

.hdr__nav { display: flex; align-items: center; gap: clamp(1.1rem, 2.6vw, 2.4rem); }

.hdr__link {
  font-size: 0.9375rem;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
  position: relative;
  padding-block: 0.4rem;
  transition: color var(--dur-fast) var(--ease-smooth);
  white-space: nowrap;
}

.hdr__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s var(--ease-expo-out);
}

.hdr__link:hover,
.hdr__link[aria-current="page"] { color: var(--ink); }

.hdr__link:hover::after,
.hdr__link[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hdr__burger {
  display: none;
  width: 40px; height: 40px;
  margin-right: -10px;
  position: relative; z-index: 131;
}

.hdr__burger span {
  position: absolute;
  left: 9px;
  width: 22px; height: 1px;
  background: var(--ink);
  transition: transform 0.4s var(--ease-dramatic), opacity 0.3s;
}
.hdr__burger span:nth-child(1) { top: 16px; }
.hdr__burger span:nth-child(2) { top: 20px; }
.hdr__burger span:nth-child(3) { top: 24px; }

.hdr__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.hdr__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hdr__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }

/* ═══════════ 滚动进场 ═══════════ */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1s var(--ease-expo-out), transform 1s var(--ease-expo-out);
  transition-delay: var(--d, 0ms);
}
[data-reveal].in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .grain, .filmstrip__track { animation: none !important; }
  .boot { display: none; }
}

/* ═══════════ 页脚 ═══════════ */

.ftr {
  border-top: 1px solid var(--line);
  padding-block: 3.5rem 4rem;
  margin-top: var(--section-gap);
}

.ftr__in {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
  align-items: baseline;
  justify-content: space-between;
}

.ftr__note { font-size: 0.9375rem; color: var(--ink-faint); line-height: 1.9; }

/* ═══════════ 工具 ═══════════ */

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip {
  position: absolute;
  top: 0; left: 50%;
  transform: translate(-50%, -110%);
  z-index: 600;
  padding: 0.7rem 1.4rem;
  background: var(--gold);
  color: var(--bg);
  font-size: 0.8125rem;
  transition: transform 0.25s var(--ease-expo-out);
}
.skip:focus { transform: translate(-50%, 0.5rem); }

/* ══════════════════════════════════════════════════════
   首屏：全屏大图 + 呼吸 + 快门帘
   ══════════════════════════════════════════════════════ */

.hero {
  position: relative;
  height: 100svh;
  min-height: 32rem;
  overflow: hidden;
  background: #000;
}

.hero__stage { position: absolute; inset: 0; }

.hero__slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transition: opacity 1.4s var(--ease-smooth);
}
.hero__slide.is-active { opacity: 1; }

.hero__img {
  width: 100%; height: 100%;
  object-fit: cover;
  /* 从大到小缓推，模拟镜头稳定后的呼吸感 */
  animation: hero-zoom 12s var(--ease-smooth) forwards;
}

@keyframes hero-zoom {
  0% { transform: scale(1.14); }
  100% { transform: scale(1); }
}

/* 非激活时保持轻微漂移，激活后重置 */
.hero__slide:not(.is-active) .hero__img {
  animation: hero-drift 30s ease-in-out infinite alternate;
}

@keyframes hero-drift {
  0% { transform: scale(1.06) translate(0, 0); }
  100% { transform: scale(1.12) translate(-1.5%, 1%); }
}

/* 暗角：让视线集中在画面中心 */
.hero__veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 90% 70% at 50% 45%, transparent 40%, rgba(0,0,0,.55) 100%),
    linear-gradient(to top, rgba(0,0,0,.92) 0%, rgba(0,0,0,.28) 38%, transparent 65%),
    linear-gradient(to bottom, rgba(0,0,0,.6) 0%, transparent 28%);
}

/* 底部轻微呼吸的光晕 */
.hero__breathe {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 40% at 50% 100%, rgba(201,165,88,.07), transparent 70%);
  animation: hero-vig 9s var(--ease-smooth) infinite alternate;
  pointer-events: none;
}

@keyframes hero-vig {
  0% { opacity: .5; }
  100% { opacity: 1; }
}

.hero__cap {
  position: absolute;
  left: var(--gutter);
  bottom: clamp(6rem, 15vh, 9rem);
  max-width: min(32ch, 80vw);
  z-index: 2;
}

.hero__cap-kicker {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.1rem;
}

.hero__cap-kicker span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
}

/* 金色短线 */
.hero__cap-kicker::after {
  content: "";
  width: clamp(2rem, 6vw, 5rem);
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.hero__cap-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6.5vw, 5rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  text-shadow: 0 4px 40px rgba(0, 0, 0, 0.6);
}

.hero__cap-sub {
  margin-top: 1.1rem;
  font-size: clamp(0.875rem, 1.2vw, 1rem);
  color: rgba(245, 244, 241, 0.68);
  line-height: 1.75;
  max-width: 34ch;
}

/* ── 底部信息条 ── */
.hero__bar {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.5rem var(--gutter) 2rem;
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  color: rgba(245, 244, 241, 0.6);
  font-variant-numeric: tabular-nums;
}
.hero__count b { color: var(--gold); font-weight: 400; }
.hero__sep { width: 1.5rem; height: 1px; background: rgba(245,244,241,.25); }

.hero__dots { display: flex; align-items: center; gap: 0.6rem; }

.hero__dot {
  width: 30px; height: 1.5px;
  background: rgba(245, 244, 241, 0.25);
  position: relative;
  overflow: hidden;
  transition: background var(--dur-fast) var(--ease-smooth);
}
.hero__dot::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
}
.hero__dot.is-active::after { animation: dotfill 6.5s linear forwards; }
@keyframes dotfill { to { transform: scaleX(1); } }
.hero__dot:hover { background: rgba(245, 244, 241, 0.5); }

.hero__scroll {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(245, 244, 241, 0.5);
}
.hero__scroll svg { animation: nudge 2.4s var(--ease-smooth) infinite; }
@keyframes nudge {
  0%, 100% { transform: translateY(0); opacity: .4; }
  50% { transform: translateY(5px); opacity: 1; }
}

/* ── 快门帘（切换时的黑幕） ── */
.shutter-curtain {
  position: absolute;
  inset: 0;
  z-index: 8;
  background: #000;
  pointer-events: none;
}
.shutter-curtain.run { animation: shutter-curtain var(--shutter-dur, 0.55s) var(--ease-dramatic) both; }

@keyframes shutter-curtain {
  0% { clip-path: inset(0 0 0 0); opacity: 1; }
  49% { clip-path: inset(0 0 0 0); opacity: 1; }
  50% { clip-path: inset(50% 0 50% 0); opacity: 1; }
  100% { clip-path: inset(50% 0 50% 0); opacity: 0; }
}

/* 快门闪光 */
.shutter-flash {
  position: absolute;
  inset: 0;
  z-index: 9;
  background: #fff;
  opacity: 0;
  pointer-events: none;
}
.shutter-flash.run { animation: shutter-flash 0.42s ease-out; }

@keyframes shutter-flash {
  0% { opacity: 0; }
  12% { opacity: .3; }
  100% { opacity: 0; }
}

/* ══════════════════════════════════════════════════════
   系列区块：编辑式排版 + 瀑布流
   ══════════════════════════════════════════════════════ */

.series { position: relative; }

.series__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.series__head-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 1.15rem;
  border-bottom: 1px solid var(--line);
}

.series__count {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

.series__name { margin-bottom: 0.5rem; }

.series__tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  color: var(--gold);
  margin-bottom: 1.5rem;
}

.series__desc {
  color: var(--ink-dim);
  max-width: 48ch;
  line-height: 1.9;
}

/* ── 网格 ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr));
  gap: clamp(0.75rem, 1.5vw, 1.25rem);
  align-items: start;
}

.grid__item {
  margin: 0;
  transition-delay: calc(var(--i, 0) * 50ms);
}

.grid__btn {
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  background: none;
  border: none;
}

.grid__frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--bg-2);
}

.grid__img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(0.28) contrast(1.05) brightness(0.92);
  transition:
    transform 1.2s var(--ease-expo-out),
    filter 0.7s var(--ease-smooth);
}

/* 悬停：从灰度走向彩色 + 推近 */
.grid__btn:hover .grid__img,
.grid__btn:focus-visible .grid__img {
  transform: scale(1.06);
  filter: grayscale(0) contrast(1) brightness(1);
}

.grid__glare {
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(245, 244, 241, 0.06);
  transition: box-shadow 0.5s var(--ease-smooth);
}
.grid__btn:hover .grid__glare {
  box-shadow: inset 0 0 0 1px var(--gold-line);
}

/* 悬停时左下角浮出金色序号 */
.grid__idx {
  position: absolute;
  left: 0.85rem;
  bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.45s var(--ease-smooth), transform 0.45s var(--ease-smooth);
  text-shadow: 0 1px 8px rgba(0,0,0,.8);
}
.grid__btn:hover .grid__idx { opacity: 1; transform: translateY(0); }

.grid__cap {
  margin-top: 0.8rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--ink-faint);
  font-family: var(--font-display);
}

/* ══════════════════════════════════════════════════════
   关于预告 / 章节引言
   ══════════════════════════════════════════════════════ */

.statement {
  padding-block: clamp(6rem, 16vh, 13rem);
  text-align: center;
}

.statement__text {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 3rem);
  line-height: 1.5;
  letter-spacing: -0.01em;
  max-width: 20ch;
  margin-inline: auto;
}

.statement__text em {
  font-style: normal;
  color: var(--gold);
}

.statement__link {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 2.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line-2);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  transition: color var(--dur-fast) var(--ease-smooth),
              border-color var(--dur-fast) var(--ease-smooth),
              gap var(--dur-fast) var(--ease-smooth);
}
.statement__link:hover {
  color: var(--gold);
  border-color: var(--gold);
  gap: 1.15rem;
}

/* ══════════════════════════════════════════════════════
   作品总览页
   ══════════════════════════════════════════════════════ */

.head {
  padding-top: calc(var(--header-h) + clamp(4rem, 10vh, 8rem));
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}
.head h1 { margin-top: 1.25rem; }
.head .lede { margin-top: 1.5rem; }

.jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-bottom: clamp(3rem, 7vh, 5rem);
}

.jump__item {
  display: inline-flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.7rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 99px;
  font-size: 0.875rem;
  color: var(--ink-dim);
  transition: color var(--dur-fast) var(--ease-smooth),
              border-color var(--dur-fast) var(--ease-smooth),
              background var(--dur-fast) var(--ease-smooth);
}
.jump__item:hover {
  color: var(--ink);
  border-color: var(--gold-line);
  background: var(--gold-soft);
}
.jump__n {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.block { scroll-margin-top: calc(var(--header-h) + 1.5rem); }

.block__head {
  max-width: 46rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}
.block__head-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}
.block__n {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  color: var(--gold);
}
.block__tag {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  color: var(--ink-dim);
}
.block__desc {
  margin-top: 1rem;
  color: var(--ink-dim);
  line-height: 1.9;
  max-width: 48ch;
}

/* ══════════════════════════════════════════════════════
   照片详情页
   ══════════════════════════════════════════════════════ */

.p { padding-top: calc(var(--header-h) + 1.5rem); }

.p__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1720px;
  margin-inline: auto;
  padding: 1.5rem var(--gutter) 2.5rem;
}

.p__back {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
  transition: color var(--dur-fast) var(--ease-smooth), gap var(--dur-fast) var(--ease-smooth);
}
.p__back:hover { color: var(--gold); gap: 1rem; }

.p__count {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

.p__figure {
  margin: 0;
  padding-inline: var(--gutter);
}

.p__img {
  width: 100%;
  max-width: 88rem;
  margin-inline: auto;
  border-radius: 1px;
  animation: hero-zoom 14s var(--ease-smooth) both;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
}

.p__info {
  padding-top: clamp(2.5rem, 6vw, 4rem);
  max-width: 88rem;
}

.p__title {
  font-size: clamp(1.85rem, 4.8vw, 3.5rem);
  letter-spacing: -0.02em;
  line-height: 1.08;
}

.p__series {
  margin-top: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.p__caption {
  margin-top: 2rem;
  max-width: 48ch;
  font-family: var(--font-display);
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  line-height: 1.95;
  color: var(--ink-dim);
}

.p__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem 4rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.p__fact dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.6rem;
}
.p__fact dd {
  font-size: 0.9375rem;
  color: var(--ink);
  font-family: var(--font-display);
}

/* 下一张：整块可点 */
.p__next {
  position: relative;
  display: block;
  margin-top: clamp(4.5rem, 12vh, 9rem);
  padding: clamp(3rem, 7vw, 5.5rem) var(--gutter);
  border-top: 1px solid var(--line);
  overflow: hidden;
  transition: background var(--dur) var(--ease-smooth);
}
.p__next:hover { background: var(--bg-2); }

.p__next-label {
  display: block;
  margin-bottom: 1rem;
  color: var(--gold);
}
.p__next-title {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.75rem);
  letter-spacing: -0.02em;
  line-height: 1.14;
}
.p__next-series {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.8125rem;
  color: var(--ink-faint);
}

.p__next-thumb {
  position: absolute;
  right: var(--gutter);
  bottom: clamp(3rem, 7vw, 5.5rem);
  width: clamp(7rem, 16vw, 13rem);
  overflow: hidden;
  border-radius: 1px;
  opacity: 0.4;
  transform: translateY(0.5rem);
  transition: opacity 0.6s var(--ease-smooth), transform 0.6s var(--ease-smooth);
}
.p__next-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(0.4);
}
.p__next:hover .p__next-thumb { opacity: 1; transform: translateY(0); }
.p__next:hover .p__next-thumb img { filter: grayscale(0); }

/* ══════════════════════════════════════════════════════
   关于页
   ══════════════════════════════════════════════════════ */

.body {
  display: grid;
  gap: clamp(3rem, 6vw, 5rem);
  max-width: 64rem;
  padding-bottom: var(--section-gap);
}

.col .h {
  font-size: 1.125rem;
  letter-spacing: 0.02em;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.75rem;
}

.col p {
  color: var(--ink-dim);
  line-height: 1.95;
  font-size: 1rem;
}
.col p + p { margin-top: 1.15rem; }

.places__row {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1.25rem;
  padding-block: 1.1rem;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.places__row:last-child { border-bottom: 0; }
.places__row dt {
  font-family: var(--font-display);
  font-size: 1.125rem;
}
.places__row dd {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.14em;
}

/* ══════════════════════════════════════════════════════
   404
   ══════════════════════════════════════════════════════ */

.nf {
  min-height: 76svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding-top: var(--header-h);
}
.nf h1 { margin-top: 1.25rem; }
.nf .lede { margin-top: 1.5rem; }
.nf__link {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 2.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line-2);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  transition: color var(--dur-fast) var(--ease-smooth),
              border-color var(--dur-fast) var(--ease-smooth),
              gap var(--dur-fast) var(--ease-smooth);
}
.nf__link:hover { color: var(--gold); border-color: var(--gold); gap: 1.15rem; }

/* ══════════════════════════════════════════════════════
   灯箱
   ══════════════════════════════════════════════════════ */

.lb {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 4vw, 3rem);
}
.lb[hidden] { display: none; }

.lb__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 3, 3, 0.985);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: fade 0.4s var(--ease-smooth);
}
@keyframes fade { from { opacity: 0; } }

.lb__figure {
  position: relative;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  max-width: 100%;
  max-height: 100%;
}

.lb__img {
  max-width: 100%;
  max-height: 74svh;
  width: auto;
  object-fit: contain;
  opacity: 1;
  transition: opacity 0.45s var(--ease-smooth);
  -webkit-user-select: none;
  user-select: none;
  animation: lb-rise 0.6s var(--ease-expo-out) both;
}
@keyframes lb-rise {
  from { opacity: 0; transform: scale(0.97) translateY(10px); }
}
.lb__img.is-loading { opacity: 0.35; }

.lb__cap {
  text-align: center;
  max-width: 58ch;
  animation: lb-cap-in 0.6s var(--ease-expo-out) 0.14s both;
}
@keyframes lb-cap-in {
  from { opacity: 0; transform: translateY(10px); }
}

.lb__series {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
}
.lb__title {
  font-size: clamp(1.125rem, 2.2vw, 1.625rem);
  margin-top: 0.6rem;
}
.lb__text {
  margin-top: 0.9rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  color: var(--ink-dim);
  line-height: 1.85;
}
.lb__text[hidden] { display: none; }

.lb__close, .lb__nav {
  position: absolute;
  z-index: 2;
  display: grid;
  place-items: center;
  color: var(--ink-dim);
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 99px;
  transition: color var(--dur-fast) var(--ease-smooth),
              border-color var(--dur-fast) var(--ease-smooth),
              background var(--dur-fast) var(--ease-smooth);
}
.lb__close:hover, .lb__nav:hover {
  color: var(--gold);
  border-color: var(--gold-line);
  background: rgba(17, 17, 17, 0.95);
}

.lb__close { top: 1.25rem; right: 1.25rem; width: 42px; height: 42px; }
.lb__nav { top: 50%; transform: translateY(-50%); width: 48px; height: 48px; }
.lb__nav--prev { left: 1.25rem; }
.lb__nav--next { right: 1.25rem; }

.lb__counter {
  position: absolute;
  top: 1.5rem;
  left: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

.lb__loading {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.lb__loading[hidden] { display: none; }

/* ══════════════════════════════════════════════════════
   光标对焦框
   ══════════════════════════════════════════════════════ */

.focus-ring {
  position: fixed;
  top: 0; left: 0;
  z-index: 400;
  pointer-events: none;
  width: 52px; height: 52px;
  /* 居中靠 JS 的 translate3d(-50%,-50%) 之外改用负 margin 会有亚像素误差，
     这里保持 0，靠 JS 精确计算中心点 */
  border: 1px solid var(--gold-line);
  border-radius: 2px;
  opacity: 0;
  /* 位置完全由 JS 的 rAF 驱动，CSS 不设transform，
     否则两套定位会打架。初始隐藏即可。 */
  transition: opacity 0.25s var(--ease-smooth);
  will-change: transform;
}

.focus-ring::before,
.focus-ring::after {
  content: "";
  position: absolute;
  background: var(--gold);
}
.focus-ring::before {
  left: 50%; top: -5px; bottom: -5px;
  width: 1px;
  transform: translateX(-50%);
}
.focus-ring::after {
  top: 50%; left: -5px; right: -5px;
  height: 1px;
  transform: translateY(-50%);
}

/* 悬停在可点元素上：环收缩变实 */
body.cursor-ring .focus-ring {
  opacity: 1;
}
body.cursor-ring .focus-ring.is-active {
  /* 只改边框与背景，不动 transform —— 位置由 JS 独占控制 */
  border-color: var(--gold);
  background: var(--gold-soft);
  box-shadow: 0 0 0 6px rgba(201, 165, 88, 0.08);
}

/* 点击反馈：瞬间收缩一下，模拟快门 */
body.cursor-ring .focus-ring.is-fire {
  border-color: var(--gold);
  background: rgba(201, 165, 88, 0.28);
  transition: none;
}

@media (hover: none), (pointer: coarse) {
  .focus-ring { display: none; }
}

/* ══════════════════════════════════════════════════════
   滚动提示（内容区顶部）
   ══════════════════════════════════════════════════════ */

.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 1.75rem;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(245, 244, 241, 0.45);
}
.scroll-cue__line {
  width: 1px;
  height: 2.5rem;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: cue 2.2s var(--ease-smooth) infinite;
}
@keyframes cue {
  0%, 100% { opacity: .3; transform: scaleY(.6); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* ══════════════════════════════════════════════════════
   响应式
   ══════════════════════════════════════════════════════ */

@media (min-width: 1100px) {
  .grid__item--portrait { grid-row: span 2; }
  .grid__item--portrait .grid__frame { aspect-ratio: 3/4 !important; }
}

@media (max-width: 768px) {
  .hdr__nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.25rem;
    background: rgba(5, 5, 5, 0.985);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s var(--ease-dramatic), visibility 0.5s;
    z-index: 130;
  }
  .hdr__nav.is-open { opacity: 1; visibility: visible; }
  .hdr__nav a {
    font-family: var(--font-display);
    font-size: 1.875rem;
    letter-spacing: 0.08em;
  }
  .hdr__burger { display: block; }
}

@media (max-width: 640px) {
  .grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
  }
  .grid__item--portrait { grid-row: auto; }
  .grid__item--portrait .grid__frame { aspect-ratio: 3/4 !important; }
  .grid__cap { display: none; }
  .grid__idx { display: none; }

  .hero__dots, .hero__hint, .scroll-cue { display: none; }
  .hero__bar { padding-bottom: 1.5rem; }
  .hero__cap { bottom: 5rem; }

  .lb { padding: 1rem; }
  .lb__nav {
    top: auto;
    bottom: 1.25rem;
    transform: none;
    width: 44px; height: 44px;
  }
  .lb__nav--prev { left: 1rem; }
  .lb__nav--next { right: 1rem; }
  .lb__img { max-height: 62svh; }
  .lb__counter { top: 1.75rem; left: 1.25rem; }

  .p__next-thumb { width: 5.5rem; opacity: 0.3; }
  .places__row { grid-template-columns: 1fr; gap: 0.3rem; }
}

/* ══════════════════════════════════════════════════════════════
   系列导航幕：序幕之后、Hero 之前的选择层
   ══════════════════════════════════════════════════════════════ */

.gate {
  position: fixed;
  inset: 0;
  z-index: 450;
  display: grid;
  place-items: center;
  background: rgba(5, 5, 5, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: calc(var(--header-h) + 2rem) var(--gutter) 3rem;
  overflow-y: auto;
  animation: gate-in 0.9s var(--ease-expo-out) 2.1s both;
}

/* 序幕期间保持隐藏，序幕结束后淡入 */
@keyframes gate-in {
  0% { opacity: 0; visibility: hidden; }
  99% { visibility: visible; }
  100% { opacity: 1; visibility: visible; }
}

.gate[hidden] { display: none; }

.gate__inner {
  width: 100%;
  max-width: 68rem;
  margin-inline: auto;
  text-align: center;
}

.gate__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.25rem;
}

.gate__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4.5vw, 3.5rem);
  letter-spacing: 0.02em;
  line-height: 1.2;
  margin-bottom: 0.85rem;
}

.gate__sub {
  font-size: 1.0625rem;
  color: var(--ink-faint);
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
  font-family: var(--font-display);
}

/* ── 系列按钮网格 ── */
.gate__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: clamp(0.75rem, 1.6vw, 1.15rem);
  list-style: none;
  padding: 0;
  margin: 0 0 clamp(2rem, 5vw, 3rem);
}

.gate__item { margin: 0; }

.gate__btn {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  text-align: left;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: border-color 0.5s var(--ease-smooth),
              transform 0.5s var(--ease-expo-out);
}

.gate__btn:hover,
.gate__btn:focus-visible {
  border-color: var(--gold-line);
  transform: translateY(-3px);
}

/* 悬停时露出底图 */
.gate__bg {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.7s var(--ease-smooth);
}
.gate__btn:hover .gate__bg,
.gate__btn:focus-visible .gate__bg {
  opacity: 0.5;
}

.gate__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(5, 5, 5, 0.92) 0%,
    rgba(5, 5, 5, 0.55) 45%,
    rgba(5, 5, 5, 0.3) 100%
  );
}

.gate__inner-text {
  position: relative;
  z-index: 2;
  padding: clamp(1.5rem, 3vw, 2.25rem) clamp(1.25rem, 2.5vw, 1.75rem);
  min-height: clamp(11rem, 20vw, 14rem);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.gate__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--gold);
  margin-bottom: 0.7rem;
}

.gate__name {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 0.4rem;
}

.gate__tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--ink-dim);
  transition: color 0.4s var(--ease-smooth);
}
.gate__btn:hover .gate__tag { color: var(--gold); }

.gate__count {
  position: absolute;
  top: clamp(1.25rem, 2.5vw, 1.75rem);
  right: clamp(1.25rem, 2.5vw, 1.75rem);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  z-index: 2;
  font-variant-numeric: tabular-nums;
}

/* ── 底部动作 ── */
.gate__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 3vw, 2.5rem);
}

.gate__skip {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line-2);
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  color: var(--ink-dim);
  transition: color 0.35s var(--ease-smooth),
              border-color 0.35s var(--ease-smooth),
              gap 0.35s var(--ease-smooth);
}
.gate__skip:hover {
  color: var(--gold);
  border-color: var(--gold);
  gap: 1.1rem;
}
.gate__skip svg { animation: nudge 2.4s var(--ease-smooth) infinite; }

@media (max-width: 640px) {
  .gate { padding-top: calc(var(--header-h) + 1.5rem); }
  .gate__list { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .gate__inner-text {
    padding: 1.25rem 1rem;
    min-height: 9rem;
  }
  .gate__count { display: none; }
  .gate__tag { font-size: 0.5625rem; letter-spacing: 0.14em; }
}