/* ============================================================
   照片故事多 · Photo Story — 设计系统
   纸感东方美学：宣纸米白 × 墨色 × 朱砂点缀
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --paper: #f6f1e7;
  --paper-2: #eee7d8;
  --card: #fcfaf4;
  --ink: #26211a;
  --ink-2: #5a5342;
  --ink-3: #746c58;
  --line: rgba(38, 33, 26, 0.12);
  --line-strong: rgba(38, 33, 26, 0.24);
  --accent: #a63a2b;
  --accent-2: #8e3123;
  --gold: #a8843c;
  --shadow-sm: 0 1px 2px rgba(38, 33, 26, 0.05), 0 10px 30px -14px rgba(38, 33, 26, 0.18);
  --shadow-lg: 0 40px 100px -30px rgba(20, 16, 10, 0.55);
  --radius: 14px;
  --maxw: 1264px;
  --font-display: "LXGW WenKai", "Kaiti SC", "STKaiti", "KaiTi", "FangSong", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC",
    "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --topbar-h: 62px;
  --stage-maxh: min(78vh, 780px);
}

[data-theme="dark"] {
  --paper: #16130e;
  --paper-2: #1e1a12;
  --card: #211c14;
  --ink: #eae3d2;
  --ink-2: #b6ad96;
  --ink-3: #8a8270;
  --line: rgba(234, 227, 210, 0.13);
  --line-strong: rgba(234, 227, 210, 0.28);
  --accent: #c25b48;
  --accent-2: #d06e5a;
  --gold: #c09a4e;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 30px -14px rgba(0, 0, 0, 0.5);
}

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

/* hidden 属性必须始终生效（组件自带 display 规则时尤其重要） */
[hidden] {
  display: none !important;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}

/* 纸张颗粒 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");
}

[data-theme="dark"] body::after {
  opacity: 0.06;
  mix-blend-mode: screen;
}

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

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

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

::selection {
  background: color-mix(in srgb, var(--accent) 80%, transparent);
  color: #f8f3e8;
}

:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 65%, transparent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(var(--maxw), 100% - 48px);
  margin-inline: auto;
}

section[id] {
  scroll-margin-top: calc(var(--topbar-h) + 24px);
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 80%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
}

.topbar-inner {
  width: min(var(--maxw), 100% - 48px);
  margin-inline: auto;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.brand-seal {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: var(--accent);
  color: #f7f2e7;
  display: grid;
  place-items: center;
  font-size: 16px;
  line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18), 0 2px 6px -2px rgba(166, 58, 43, 0.6);
}

.brand-en {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-left: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  font-size: 13.5px;
  letter-spacing: 0.1em;
  color: var(--ink-2);
  padding: 8px 14px;
  border-radius: 999px;
  transition: background 0.25s, color 0.25s;
  white-space: nowrap;
}

.nav a:hover {
  color: var(--ink);
  background: color-mix(in srgb, var(--ink) 6%, transparent);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  margin-left: 6px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  display: grid;
  place-items: center;
  color: var(--ink-2);
  transition: 0.25s;
}

.theme-toggle:hover {
  color: var(--ink);
  border-color: var(--line-strong);
  transform: rotate(18deg);
}

.theme-toggle svg {
  width: 17px;
  height: 17px;
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun,
:root:not([data-theme="dark"]) .theme-toggle .icon-moon {
  display: block;
}

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: clamp(64px, 11vh, 120px) 24px 0;
}

.hero-kicker {
  margin: 0 0 18px;
  font-size: 11.5px;
  letter-spacing: 0.5em;
  text-indent: 0.5em;
  color: var(--ink-3);
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(46px, 8vw, 92px);
  line-height: 1.12;
  letter-spacing: 0.08em;
  text-indent: 0.08em;
}

.hero-sub {
  margin: 20px auto 0;
  font-size: clamp(14px, 1.6vw, 16px);
  color: var(--ink-2);
  letter-spacing: 0.14em;
}

.hero-stats {
  margin-top: clamp(30px, 5vh, 44px);
  display: flex;
  justify-content: center;
}

.stat {
  padding: 4px 30px;
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat:first-child {
  border-left: 0;
}

.stat b {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 500;
  line-height: 1.1;
  color: var(--ink);
}

.stat span {
  font-size: 11.5px;
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  color: var(--ink-3);
}

/* ---------- 跑马灯 ---------- */
.marquee {
  margin-top: clamp(40px, 6vh, 64px);
  display: grid;
  gap: 14px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee-row {
  overflow: hidden;
}

.marquee-track {
  display: flex;
  gap: 14px;
  width: max-content;
  animation: marquee-move 110s linear infinite;
  will-change: transform;
}

.marquee-track.reverse {
  animation-direction: reverse;
  animation-duration: 130s;
}

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

.marquee-track img {
  height: 128px;
  width: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--paper-2);
}

@keyframes marquee-move {
  to {
    transform: translateX(-50%);
  }
}

/* ---------- 通用区段 ---------- */
.section {
  padding-top: clamp(72px, 9vw, 112px);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}

.section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(26px, 3.4vw, 36px);
  letter-spacing: 0.1em;
}

.section-sub {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--ink-3);
}

/* ---------- 筛选条 ---------- */
.filterbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 34px;
}

.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 15px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--ink-2);
  background: transparent;
  cursor: pointer;
  transition: 0.25s;
  white-space: nowrap;
}

.chip:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.chip.active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.chip .n {
  color: var(--ink-3);
  font-size: 11.5px;
  margin-left: 5px;
  transition: color 0.25s;
}

.chip.active .n {
  color: inherit;
  opacity: 0.62;
}

.chip.toggle::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-right: 8px;
  vertical-align: -2px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  transition: 0.2s;
}

.chip.toggle.active::before {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: inset 0 0 0 3px var(--paper);
}

.searchbox {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--line-strong);
  padding: 4px 2px;
  transition: border-color 0.25s;
}

.searchbox:focus-within {
  border-bottom-color: var(--accent);
}

.searchbox svg {
  width: 14px;
  height: 14px;
  color: var(--ink-3);
  flex: none;
}

.searchbox input {
  border: 0;
  outline: none;
  background: transparent;
  width: 190px;
  font-size: 13.5px;
  letter-spacing: 0.06em;
  padding: 5px 0;
}

.searchbox input::placeholder {
  color: var(--ink-3);
}

/* ---------- 通用小标签（灯箱题材等） ---------- */
.card-cat {
  position: absolute;
  top: 11px;
  left: 11px;
  z-index: 2;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-indent: 0.18em;
  padding: 4px 11px;
  border-radius: 999px;
  color: var(--ink-2);
  background: color-mix(in srgb, var(--paper) 84%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--line);
}

.empty-tip {
  text-align: center;
  color: var(--ink-3);
  font-size: 13.5px;
  letter-spacing: 0.1em;
  padding: 60px 0;
}

/* ---------- 风格图鉴 ---------- */
.style-group {
  margin-top: 52px;
}

.style-group:first-child {
  margin-top: 0;
}

.style-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}

.style-group-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 23px;
  letter-spacing: 0.1em;
  color: var(--ink);
}

.style-group-head .count {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}

.style-group-head .dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--sc-accent, var(--accent));
  transform: rotate(45deg) translateY(-1px);
  flex: none;
  align-self: center;
}

.style-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.style-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s cubic-bezier(0.2, 0.65, 0.2, 1), border-color 0.35s, box-shadow 0.35s;
}

.style-card.has-example {
  cursor: pointer;
}

.style-card.has-example:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--sc-accent, var(--accent)) 45%, var(--line));
  box-shadow: var(--shadow-sm);
}

.sc-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--paper-2);
}

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

.sc-img {
  transition: opacity 0.65s ease, transform 1s cubic-bezier(0.2, 0.65, 0.2, 1);
}

.style-card.has-example:hover .sc-img,
.style-card.has-example:focus-visible .sc-img {
  transform: scale(1.035);
}

.sc-alt {
  opacity: 0;
}

.style-card.has-example:hover .sc-alt,
.style-card.has-example:focus-visible .sc-alt {
  opacity: 1;
}

.sc-chip {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  max-width: calc(100% - 24px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--ink-2);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
}

.sc-state {
  position: absolute;
  bottom: 10px;
  right: 10px;
  z-index: 2;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-indent: 0.18em;
  color: #f6f0e2;
  background: rgba(22, 18, 12, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: 999px;
  padding: 3px 11px;
}

.sc-state .off {
  display: none;
}

.style-card.has-example:hover .sc-state .on,
.style-card.has-example:focus-visible .sc-state .on {
  display: none;
}

.style-card.has-example:hover .sc-state .off,
.style-card.has-example:focus-visible .sc-state .off {
  display: inline;
}

.sc-ph {
  display: grid;
  place-items: center;
  background-image: repeating-linear-gradient(
      45deg,
      color-mix(in srgb, var(--sc-accent, var(--accent)) 7%, transparent) 0 1px,
      transparent 1px 9px
    ),
    linear-gradient(180deg, color-mix(in srgb, var(--sc-accent, var(--accent)) 4%, transparent), transparent 70%);
}

.sc-stamp {
  font-family: var(--font-display);
  font-size: clamp(19px, 2vw, 24px);
  letter-spacing: 0.14em;
  text-indent: 0.14em;
  padding: 13px 20px;
  border: 1.5px solid color-mix(in srgb, var(--sc-accent, var(--accent)) 55%, transparent);
  color: color-mix(in srgb, var(--sc-accent, var(--accent)) 88%, var(--ink));
  border-radius: 7px;
  background: color-mix(in srgb, var(--card) 55%, transparent);
}

.sc-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 9px;
}

.sc-body {
  padding: 15px 16px 17px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  flex: 1;
}

.sc-body h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 17.5px;
  letter-spacing: 0.07em;
}

.sc-body p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-2);
}

.sc-feel {
  margin-top: auto;
  padding-top: 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
}

/* ---------- 页脚 ---------- */
.footer {
  margin-top: clamp(80px, 10vw, 130px);
  border-top: 1px solid var(--line);
  padding: 44px 24px 58px;
  text-align: center;
}

.footer p {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
}

.footer p.sub {
  margin-top: 8px;
  font-size: 11px;
}

/* ---------- 灯箱 ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: clamp(10px, 2.6vw, 36px);
}

.lightbox[hidden] {
  display: none;
}

.lb-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(22, 18, 12, 0.74);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: fade-in 0.3s ease;
}

[data-theme="dark"] .lb-backdrop {
  background: rgba(5, 4, 3, 0.82);
}

.lb-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  width: min(1240px, 100%);
  height: min(86vh, 800px);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: lb-in 0.4s cubic-bezier(0.2, 0.7, 0.2, 1);
}

@keyframes lb-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.985);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
}

.lb-stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(14px, 2vw, 26px);
  background: color-mix(in srgb, var(--paper) 55%, var(--paper-2));
  min-width: 0;
  min-height: 0;
}

.lb-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 50% 42%, transparent 55%, color-mix(in srgb, var(--ink) 5%, transparent));
  pointer-events: none;
}

.lb-img {
  max-width: 100%;
  max-height: var(--stage-maxh);
  border-radius: 10px;
  box-shadow: 0 24px 60px -22px rgba(20, 16, 10, 0.5);
  transition: opacity 0.3s ease;
}

.lb-img.swap {
  opacity: 0;
}

.cmp {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(14px, 2vw, 26px);
}

.cmp[hidden] {
  display: none;
}

.cmp-frame {
  position: relative;
  max-width: 100%;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 24px 60px -22px rgba(20, 16, 10, 0.5);
}

.cmp-base {
  max-width: 100%;
  max-height: var(--stage-maxh);
}

.cmp-top {
  position: absolute;
  inset: 0;
  clip-path: inset(0 0 0 45%);
}

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

.cmp-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 45%;
  width: 2px;
  margin-left: -1px;
  background: rgba(246, 240, 226, 0.92);
  box-shadow: 0 0 14px rgba(0, 0, 0, 0.45);
  pointer-events: none;
}

.cmp-knob {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(246, 240, 226, 0.96);
  color: #26211a;
  display: grid;
  place-items: center;
  font-size: 16px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

.cmp-range {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
}

.cmp-label {
  position: absolute;
  bottom: 12px;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-indent: 0.24em;
  color: #f6f0e2;
  background: rgba(22, 18, 12, 0.5);
  backdrop-filter: blur(4px);
  padding: 4px 12px;
  border-radius: 999px;
  pointer-events: none;
}

.cmp-label.left {
  left: 12px;
}

.cmp-label.right {
  right: 12px;
}

/* ---------- 对比方式切换 ---------- */
.cmp-modes {
  display: flex;
  gap: 6px;
  margin-top: 12px;
}

.cmp-modes .chip {
  padding: 5px 13px;
  font-size: 12px;
}

/* ---------- 双图 / 多图并排对比 ---------- */
.cmp-multi {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: clamp(14px, 2vw, 26px);
}

.cmp-multi[data-count="3"] {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cmp-multi[hidden] {
  display: none;
}

.cmp-pane {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  min-width: 0;
  min-height: 0;
  background: none;
  border: 0;
  font: inherit;
  color: inherit;
}

button.cmp-pane {
  cursor: pointer;
}

.cmp-pane-img {
  flex: 0 1 auto;
  min-height: 0;
  display: grid;
  place-items: center;
}

.cmp-pane-img img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 10px;
  box-shadow: 0 18px 44px -22px rgba(20, 16, 10, 0.5);
  transition: box-shadow 0.3s;
}

.cmp-pane.active .cmp-pane-img img {
  box-shadow: 0 18px 44px -22px rgba(20, 16, 10, 0.5),
    0 0 0 2px color-mix(in srgb, var(--accent) 62%, transparent);
}

button.cmp-pane:hover .cmp-pane-img img {
  box-shadow: 0 20px 48px -22px rgba(20, 16, 10, 0.55),
    0 0 0 2px color-mix(in srgb, var(--ink) 38%, transparent);
}

button.cmp-pane:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 12px;
}

.cmp-pane-cap {
  display: block;
  text-align: center;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  color: var(--ink-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cmp-pane.is-original .cmp-pane-cap {
  color: var(--ink-3);
}

.cmp-pane.active .cmp-pane-cap {
  color: var(--accent-2);
}

.lb-side {
  display: flex;
  flex-direction: column;
  padding: 26px 26px 22px;
  border-left: 1px solid var(--line);
  overflow-y: auto;
  scrollbar-width: thin;
}

.lb-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-right: 46px;
}

.lb-count {
  font-size: 11.5px;
  letter-spacing: 0.3em;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.lb-cat {
  position: static;
  backdrop-filter: none;
}

.lb-title {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 27px;
  letter-spacing: 0.08em;
}

.lb-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.lb-tabs .chip {
  padding: 6px 13px;
  font-size: 12.5px;
}

.lb-compare {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-top: 18px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink-2);
  cursor: pointer;
  user-select: none;
  width: fit-content;
}

.lb-compare input {
  appearance: none;
  -webkit-appearance: none;
  width: 38px;
  height: 21px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ink) 16%, transparent);
  position: relative;
  cursor: pointer;
  transition: 0.3s;
  margin: 0;
  flex: none;
}

.lb-compare input::after {
  content: "";
  position: absolute;
  top: 2.5px;
  left: 2.5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--paper);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  transition: 0.3s;
}

.lb-compare input:checked {
  background: var(--accent);
}

.lb-compare input:checked::after {
  transform: translateX(17px);
}

.lb-desc {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-2);
  letter-spacing: 0.03em;
}

.lb-desc .desc-name {
  display: block;
  font-family: var(--font-display);
  font-size: 15.5px;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 7px;
}

.lb-desc .feel-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.lb-desc .feel-chips span {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent-2);
  border: 1px solid color-mix(in srgb, var(--accent) 32%, var(--line));
  border-radius: 999px;
  padding: 3px 10px;
}

.lb-nav {
  margin-top: auto;
  padding-top: 22px;
  display: flex;
  gap: 10px;
}

.btn {
  flex: 1;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  cursor: pointer;
  transition: 0.25s;
  white-space: nowrap;
}

.btn:hover {
  border-color: var(--line-strong);
  color: var(--ink);
  background: color-mix(in srgb, var(--ink) 5%, transparent);
}

.lb-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 6;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--card) 78%, transparent);
  backdrop-filter: blur(8px);
  color: var(--ink-2);
  font-size: 20px;
  line-height: 1;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: 0.3s;
}

.lb-close:hover {
  color: var(--ink);
  border-color: var(--line-strong);
  transform: rotate(90deg);
}

/* ---------- 进场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.75s ease, transform 0.75s cubic-bezier(0.2, 0.65, 0.2, 1);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .lb-panel {
    grid-template-columns: 1fr;
    grid-template-rows: max-content max-content;
    height: min(92vh, 900px);
    overflow-y: auto;
  }

  .lb-side {
    border-left: 0;
    border-top: 1px solid var(--line);
    overflow: visible;
  }

  .lb-stage {
    min-height: 46vh;
  }

  .lb-nav {
    margin-top: 6px;
  }

  :root {
    --stage-maxh: 44vh;
  }
}

@media (max-width: 720px) {
  .container,
  .topbar-inner {
    width: calc(100% - 36px);
  }

  .brand-en {
    display: none;
  }

  .nav {
    gap: 2px;
  }

  .nav a {
    font-size: 12.5px;
    padding: 7px 9px;
  }

  .brand {
    font-size: 17px;
    gap: 8px;
  }

  .brand-seal {
    width: 25px;
    height: 25px;
    font-size: 14px;
  }

  .theme-toggle {
    width: 32px;
    height: 32px;
    margin-left: 2px;
  }

  .hero-stats {
    gap: 0;
  }

  .stat {
    padding: 4px 18px;
  }

  .stat b {
    font-size: 24px;
  }

  .marquee-track img {
    height: 92px;
  }

  .filterbar {
    gap: 7px;
  }

  .searchbox {
    margin-left: 0;
    width: 100%;
  }

  .searchbox input {
    width: 100%;
  }

  .lightbox {
    padding: 0;
  }

  .lb-panel {
    width: 100%;
    height: 100%;
    border-radius: 0;
    border: 0;
  }

  /* 并排对比在窄屏改为纵向堆叠、全宽展示 */
  .lb-stage.multi-on {
    align-items: flex-start;
  }

  .lb-stage.multi-on .lb-img {
    display: none;
  }

  .cmp-multi,
  .cmp-multi[data-count="3"] {
    position: relative;
    inset: auto;
    width: 100%;
    grid-template-columns: 1fr;
  }

  .lb-close {
    position: fixed;
  }
}

/* ---------- 无障碍 / 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .marquee-track {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}