/* ============================================================
   个人摄影作品网站 · Material Design 3 风格样式系统
   浅色 / 深色主题 · 动效 · 响应式
   ============================================================ */

/* ---------- 设计令牌：浅色主题 ---------- */
:root {
  color-scheme: light;

  --md-primary: #0B57D0;
  --md-on-primary: #FFFFFF;
  --md-primary-container: #D3E3FD;
  --md-on-primary-container: #041E49;

  --md-secondary: #526070;
  --md-on-secondary: #FFFFFF;
  --md-secondary-container: #D6E3F8;
  --md-on-secondary-container: #0F1D2D;

  --md-surface: #FFFFFF;
  --md-surface-dim: #DADEE2;
  --md-surface-container-lowest: #FFFFFF;
  --md-surface-container-low: #F7F9FC;
  --md-surface-container: #F1F4F8;
  --md-surface-container-high: #EBEEF2;
  --md-surface-container-highest: #E4E8EC;
  --md-on-surface: #191C20;
  --md-on-surface-variant: #44474E;
  --md-outline: #74777F;
  --md-outline-variant: #C4C7CF;
  --md-inverse-surface: #2E3136;
  --md-inverse-on-surface: #F1F4F8;
  --md-background: #F8FAFD;
  --md-on-background: #191C20;
  --md-error: #BA1A1A;
  --md-on-error: #FFFFFF;
  --md-error-container: #FFDAD6;
  --md-on-error-container: #410002;

  --shadow-1: 0 1px 2px rgba(0,0,0,.28), 0 1px 3px 1px rgba(0,0,0,.12);
  --shadow-2: 0 1px 2px rgba(0,0,0,.28), 0 2px 6px 2px rgba(0,0,0,.12);
  --shadow-3: 0 4px 8px 3px rgba(0,0,0,.14), 0 1px 3px rgba(0,0,0,.28);

  --r-lg: 28px;
  --r-md: 20px;
  --r-sm: 12px;
  --r-full: 999px;

  --font: "Roboto", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;

  --header-h: 64px;
  --container: 1120px;

  --ease-out: cubic-bezier(.2, 0, 0, 1);
  --ease-emph: cubic-bezier(.05, .7, .1, 1);

  /* 背景流光强度（浅色主题，深色主题会更高一些） */
  --flow-a1: 9%;
  --flow-a2: 7%;
  --flow-a3: 8%;
  --flow-beam: 6%;
}

/* ---------- 设计令牌：深色主题 ---------- */
html[data-theme="dark"] {
  color-scheme: dark;

  --md-primary: #A8C7FA;
  --md-on-primary: #062E6F;
  --md-primary-container: #0842A0;
  --md-on-primary-container: #D3E3FD;

  --md-secondary: #BBC7DB;
  --md-on-secondary: #253140;
  --md-secondary-container: #3B4857;
  --md-on-secondary-container: #D6E3F8;

  --md-surface: #111318;
  --md-surface-dim: #111318;
  --md-surface-container-lowest: #0C0E12;
  --md-surface-container-low: #191C21;
  --md-surface-container: #1D2026;
  --md-surface-container-high: #282B31;
  --md-surface-container-highest: #33363D;
  --md-on-surface: #E2E2E9;
  --md-on-surface-variant: #C4C6D0;
  --md-outline: #8E9099;
  --md-outline-variant: #44474E;
  --md-inverse-surface: #E2E2E9;
  --md-inverse-on-surface: #2E3136;
  --md-background: #111318;
  --md-on-background: #E2E2E9;
  --md-error: #FFB4AB;
  --md-on-error: #690005;
  --md-error-container: #93000A;
  --md-on-error-container: #FFDAD6;

  --shadow-1: 0 1px 3px rgba(0,0,0,.5), 0 1px 2px rgba(0,0,0,.4);
  --shadow-2: 0 1px 3px rgba(0,0,0,.5), 0 2px 6px 2px rgba(0,0,0,.4);
  --shadow-3: 0 4px 8px 3px rgba(0,0,0,.5), 0 1px 3px rgba(0,0,0,.5);

  --flow-a1: 15%;
  --flow-a2: 12%;
  --flow-a3: 13%;
  --flow-beam: 9%;
}

/* 跟随系统（未手动选择主题时） */
@media (prefers-color-scheme: dark) {
  html:not([data-theme]) {
    color-scheme: dark;
    --md-primary: #A8C7FA; --md-on-primary: #062E6F; --md-primary-container: #0842A0; --md-on-primary-container: #D3E3FD;
    --md-secondary: #BBC7DB; --md-on-secondary: #253140; --md-secondary-container: #3B4857; --md-on-secondary-container: #D6E3F8;
    --md-surface: #111318; --md-surface-dim: #111318; --md-surface-container-lowest: #0C0E12;
    --md-surface-container-low: #191C21; --md-surface-container: #1D2026; --md-surface-container-high: #282B31;
    --md-surface-container-highest: #33363D; --md-on-surface: #E2E2E9; --md-on-surface-variant: #C4C6D0;
    --md-outline: #8E9099; --md-outline-variant: #44474E; --md-inverse-surface: #E2E2E9; --md-inverse-on-surface: #2E3136;
    --md-background: #111318; --md-on-background: #E2E2E9;
    --md-error: #FFB4AB; --md-on-error: #690005; --md-error-container: #93000A; --md-on-error-container: #FFDAD6;
    --shadow-1: 0 1px 3px rgba(0,0,0,.5), 0 1px 2px rgba(0,0,0,.4);
    --shadow-2: 0 1px 3px rgba(0,0,0,.5), 0 2px 6px 2px rgba(0,0,0,.4);
    --shadow-3: 0 4px 8px 3px rgba(0,0,0,.5), 0 1px 3px rgba(0,0,0,.5);
    --flow-a1: 15%; --flow-a2: 12%; --flow-a3: 13%; --flow-beam: 9%;
  }
}

/* 主题切换时的平滑过渡（仅切换瞬间启用，避免常驻性能损耗） */
html.theme-anim, html.theme-anim body, html.theme-anim body * {
  transition: background-color .35s var(--ease-out), color .35s var(--ease-out),
              border-color .35s var(--ease-out), box-shadow .35s var(--ease-out),
              fill .35s var(--ease-out) !important;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--md-background);
  color: var(--md-on-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { display: block; max-width: 100%; }
a { color: var(--md-primary); text-decoration: none; }
button { font-family: inherit; }

::selection { background: var(--md-primary-container); color: var(--md-on-primary-container); }

:focus-visible { outline: 3px solid color-mix(in srgb, var(--md-primary) 45%, transparent); outline-offset: 2px; border-radius: 4px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .container { padding: 0 16px; } }

main { flex: 1; position: relative; z-index: 1; }
.footer { position: relative; z-index: 1; }

/* ---------- 背景流光（Apple 风格 · 低调） ---------- */
.bg-flow {
  position: fixed; inset: 0; z-index: 0;
  overflow: hidden; pointer-events: none;
}
.bg-flow .orb {
  position: absolute; border-radius: 50%;
  will-change: transform;
}
.bg-flow .orb1 {
  width: 64vmax; height: 64vmax; left: -20vmax; top: -24vmax;
  background: radial-gradient(circle, color-mix(in srgb, var(--md-primary) var(--flow-a1), transparent) 0%, transparent 66%);
  animation: orbDrift1 36s ease-in-out infinite alternate;
}
.bg-flow .orb2 {
  width: 56vmax; height: 56vmax; right: -18vmax; top: 8%;
  background: radial-gradient(circle, color-mix(in srgb, #00BCD4 var(--flow-a2), transparent) 0%, transparent 68%);
  animation: orbDrift2 44s ease-in-out infinite alternate;
}
.bg-flow .orb3 {
  width: 52vmax; height: 52vmax; left: 18%; bottom: -26vmax;
  background: radial-gradient(circle, color-mix(in srgb, var(--md-secondary) var(--flow-a3), transparent) 0%, transparent 70%);
  animation: orbDrift3 40s ease-in-out infinite alternate;
}
.bg-flow .beam {
  position: absolute; top: 0; left: -70vmax;
  width: 50vmax; height: 9vmax;
  background: linear-gradient(90deg, transparent,
    color-mix(in srgb, var(--md-primary) var(--flow-beam), transparent) 45%,
    color-mix(in srgb, var(--md-primary) calc(var(--flow-beam) * 1.4), transparent) 52%,
    transparent);
  transform: rotate(-22deg) translateY(26vmax);
  opacity: 0;
  animation: beamSweep 22s ease-in-out infinite;
}
@keyframes orbDrift1 { to { transform: translate(9vmax, 7vmax) scale(1.14); } }
@keyframes orbDrift2 { to { transform: translate(-8vmax, -6vmax) scale(1.1); } }
@keyframes orbDrift3 { to { transform: translate(7vmax, -9vmax) scale(1.12); } }
@keyframes beamSweep {
  0%   { opacity: 0; transform: rotate(-22deg) translate(-8vmax, 26vmax); }
  12%  { opacity: .75; }
  58%  { opacity: .5; }
  78%  { opacity: 0; transform: rotate(-22deg) translate(150vmax, 26vmax); }
  100% { opacity: 0; transform: rotate(-22deg) translate(150vmax, 26vmax); }
}

/* ---------- 顶部应用栏 ---------- */
.top-app-bar {
  position: sticky; top: 0; z-index: 60;
  height: var(--header-h);
  display: flex; align-items: center;
  background: color-mix(in srgb, var(--md-background) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow .25s var(--ease-out);
}
.top-app-bar.scrolled { box-shadow: var(--shadow-1); }
.app-inner {
  width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; gap: 12px;
}
@media (max-width: 600px) { .app-inner { padding: 0 16px; } }
.app-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 20px; font-weight: 600; letter-spacing: .01em;
  color: var(--md-on-background); margin-right: auto;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.app-title .logo {
  width: 30px; height: 30px; flex: none;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--md-primary), color-mix(in srgb, var(--md-primary) 60%, #00BCD4));
  display: grid; place-items: center; color: #fff;
  box-shadow: var(--shadow-1);
}
.app-title .logo svg { width: 18px; height: 18px; }

/* 图标按钮 */
.icon-btn {
  position: relative; overflow: hidden;
  width: 44px; height: 44px; border: none; border-radius: var(--r-full);
  background: transparent; color: var(--md-on-surface-variant);
  display: grid; place-items: center; cursor: pointer;
  transition: background .2s var(--ease-out);
  flex: none;
}
.icon-btn:hover { background: color-mix(in srgb, var(--md-on-surface) 8%, transparent); }
.icon-btn svg { width: 22px; height: 22px; }
.icon-btn .badge-dot {
  position: absolute; top: 7px; right: 7px; width: 9px; height: 9px;
  border-radius: 50%; background: var(--md-primary); border: 2px solid var(--md-background);
}

/* ---------- 按钮 ---------- */
.btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; padding: 0 24px;
  border: none; border-radius: var(--r-full);
  font-size: 14px; font-weight: 600; letter-spacing: .01em;
  cursor: pointer; user-select: none;
  transition: box-shadow .25s var(--ease-out), background .2s var(--ease-out), transform .15s var(--ease-out);
}
.btn:active { transform: scale(.97); }
.btn svg { width: 18px; height: 18px; flex: none; }

.btn-filled { background: var(--md-primary); color: var(--md-on-primary); box-shadow: var(--shadow-1); }
.btn-filled:hover { box-shadow: var(--shadow-2); }

.btn-tonal { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.btn-tonal:hover { box-shadow: var(--shadow-1); }

.btn-outlined {
  background: transparent; color: var(--md-primary);
  border: 1px solid var(--md-outline); box-shadow: none;
}
.btn-outlined:hover { background: color-mix(in srgb, var(--md-primary) 7%, transparent); }

.btn-text { background: transparent; color: var(--md-primary); padding: 0 16px; }
.btn-text:hover { background: color-mix(in srgb, var(--md-primary) 7%, transparent); }

.btn-danger { background: var(--md-error-container); color: var(--md-on-error-container); }
.btn-danger:hover { box-shadow: var(--shadow-1); }

.btn-block { width: 100%; }

/* ---------- 涟漪 ---------- */
.ripple {
  position: absolute; border-radius: 50%;
  background: currentColor; opacity: .14;
  transform: scale(0); animation: ripple .55s var(--ease-out) forwards;
  pointer-events: none;
}
@keyframes ripple { to { transform: scale(2.6); opacity: 0; } }

/* ---------- 入场动效 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s var(--ease-emph), transform .6s var(--ease-emph); transition-delay: var(--d, 0ms); }
.reveal.in { opacity: 1; transform: none; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes popIn { from { opacity: 0; transform: scale(.92); } to { opacity: 1; transform: scale(1); } }

.img-fade { opacity: 0; transition: opacity .6s var(--ease-out); }
.img-fade.loaded { opacity: 1; }

/* ---------- 头像 / 简介区（首页 Hero，紧凑版） ---------- */
.hero { position: relative; overflow: hidden; margin-top: 20px; }
.hero-card {
  position: relative; overflow: hidden;
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, var(--md-primary-container), color-mix(in srgb, var(--md-primary-container) 55%, var(--md-surface)) 62%, var(--md-surface));
  box-shadow: var(--shadow-1);
  padding: 30px 36px 28px;
  animation: fadeUp .7s var(--ease-emph) both;
}
@media (max-width: 720px) { .hero-card { padding: 22px 20px 20px; border-radius: var(--r-md); } }

/* 漂浮的柔光装饰（与页面流光背景呼应，保持低调） */
.hero-blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .3; pointer-events: none; }
.hero-blob.b1 { width: 300px; height: 300px; right: -70px; top: -110px; background: color-mix(in srgb, var(--md-primary) 42%, transparent); animation: blobFloat 16s ease-in-out infinite alternate; }
.hero-blob.b2 { width: 240px; height: 240px; left: 30%; bottom: -140px; background: color-mix(in srgb, #00BCD4 30%, transparent); animation: blobFloat 21s ease-in-out infinite alternate-reverse; }
@keyframes blobFloat { from { transform: translate(0, 0) scale(1); } to { transform: translate(-40px, 30px) scale(1.15); } }

.hero-body { position: relative; display: flex; gap: 28px; align-items: center; }
@media (max-width: 720px) { .hero-body { flex-direction: column; align-items: center; text-align: center; gap: 14px; } }

.avatar-wrap { flex: none; }
.avatar {
  width: 92px; height: 92px; border-radius: 50%;
  background: var(--md-surface-container-highest);
  border: 4px solid color-mix(in srgb, var(--md-surface) 80%, transparent);
  box-shadow: var(--shadow-3);
  object-fit: cover;
  display: grid; place-items: center; overflow: hidden;
  color: var(--md-on-surface-variant);
}
.avatar svg { width: 42px; height: 42px; opacity: .55; }
@media (max-width: 720px) { .avatar { width: 80px; height: 80px; } }

.hero-text { flex: 1; min-width: 0; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 700; letter-spacing: .14em;
  color: var(--md-primary);
  background: color-mix(in srgb, var(--md-primary) 10%, transparent);
  padding: 4px 12px; border-radius: var(--r-full);
  text-transform: uppercase;
}
.hero-name { font-size: clamp(19px, 2.6vw, 24px); font-weight: 700; margin: 8px 0 6px; color: var(--md-on-surface); letter-spacing: .01em; }
.hero-intro p { color: var(--md-on-surface-variant); font-size: 13.5px; margin-bottom: 7px; max-width: 62ch; }
@media (max-width: 720px) { .hero-intro p { margin-left: auto; margin-right: auto; } }
.hero-intro p:last-child { margin-bottom: 0; }
.hero-intro .typing-placeholder { color: var(--md-outline); font-style: italic; }

/* ---------- 板块 ---------- */
.section { padding: 56px 0 8px; }
@media (max-width: 720px) { .section { padding-top: 44px; } }
.section-head {
  display: flex; align-items: flex-end; gap: 16px; flex-wrap: wrap;
  margin-bottom: 24px;
}
.section-titles { flex: 1; min-width: 220px; }
.section-title { font-size: clamp(22px, 3vw, 28px); font-weight: 700; color: var(--md-on-surface); display: flex; align-items: center; gap: 12px; }
.section-title .rule { flex: none; width: 34px; height: 5px; border-radius: 3px; background: linear-gradient(90deg, var(--md-primary), color-mix(in srgb, var(--md-primary) 30%, transparent)); }
.section-sub { color: var(--md-on-surface-variant); font-size: 14px; margin-top: 6px; }
.section-empty { text-align: center; padding: 40px 0; color: var(--md-on-surface-variant); font-size: 14.5px; }

/* ---------- 照片网格 ---------- */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}
@media (max-width: 560px) { .photo-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } }

/* 首页精选卡片 */
.pcard {
  position: relative; overflow: hidden;
  border-radius: var(--r-md);
  background: var(--md-surface-container-low);
  box-shadow: var(--shadow-1);
  cursor: pointer;
  aspect-ratio: 4 / 3;
  transition: transform .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
.pcard:hover { transform: translateY(-4px); box-shadow: var(--shadow-3); }
.pcard img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease-emph); }
.pcard:hover img { transform: scale(1.07); }
.pcard .shade {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.62) 0%, rgba(0,0,0,0) 45%);
  opacity: 0; transition: opacity .3s var(--ease-out);
}
.pcard:hover .shade { opacity: 1; }
.pcard .pcap {
  position: absolute; left: 14px; right: 14px; bottom: 12px;
  color: #fff; font-size: 13.5px; font-weight: 600;
  display: flex; align-items: center; gap: 8px;
  opacity: 0; transform: translateY(8px);
  transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.pcard:hover .pcap { opacity: 1; transform: none; }
.pcard .count-chip {
  position: absolute; top: 10px; right: 10px;
  background: rgba(20, 22, 26, .55); color: #fff; backdrop-filter: blur(6px);
  font-size: 11.5px; font-weight: 600; padding: 3px 10px; border-radius: var(--r-full);
  display: flex; align-items: center; gap: 4px;
}
.pcard .count-chip svg { width: 13px; height: 13px; }

/* ---------- 详情页照片卡片 ---------- */
.detail-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px; }
@media (max-width: 560px) { .detail-grid { grid-template-columns: 1fr; gap: 18px; } }

.ditem {
  background: var(--md-surface-container-low);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-1);
  transition: transform .3s var(--ease-out), box-shadow .3s var(--ease-out);
  display: flex; flex-direction: column;
}
.ditem:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.ditem .dimg { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--md-surface-container-high); cursor: zoom-in; }
.ditem .dimg img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease-emph); }
.ditem:hover .dimg img { transform: scale(1.04); }
.ditem .dimg .zoom-hint {
  position: absolute; right: 10px; top: 10px;
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(20,22,26,.5); color: #fff; backdrop-filter: blur(6px);
  display: grid; place-items: center;
  opacity: 0; transition: opacity .25s;
}
.ditem:hover .dimg .zoom-hint { opacity: 1; }
.ditem .dimg .zoom-hint svg { width: 17px; height: 17px; }

.ditem .dbody { padding: 16px 18px 14px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.ditem .dcaption { font-size: 14.5px; color: var(--md-on-surface); line-height: 1.7; min-height: 2.4em; word-break: break-word; }
.ditem .dcaption:empty::before { content: "—"; color: var(--md-outline); }
.ditem .dmeta {
  margin-top: auto;
  display: flex; align-items: center; gap: 10px;
  padding-top: 12px; border-top: 1px solid var(--md-outline-variant);
}
.brand-logo { display: inline-flex; align-items: center; gap: 7px; color: var(--md-on-surface-variant); flex: 1; min-width: 0; }
.brand-logo img { max-height: 22px; width: auto; max-width: 120px; }
.brand-logo .brand-text { font-weight: 700; letter-spacing: .02em; white-space: nowrap; }
.brand-logo .brand-cam { font-size: 12px; color: var(--md-outline); font-weight: 500; letter-spacing: .03em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
/* 各厂商字标风格 */
.brand-nikon .brand-text { font-weight: 800; letter-spacing: .05em; }
.brand-canon .brand-text { font-style: italic; font-weight: 700; }
.brand-sony .brand-text { font-weight: 900; letter-spacing: -.01em; }
.brand-fujifilm .brand-text { font-weight: 900; text-transform: uppercase; letter-spacing: .04em; }
.brand-leica .brand-text { font-family: Georgia, "Times New Roman", serif; font-weight: 700; letter-spacing: .08em; }
.brand-other .brand-text { font-weight: 600; letter-spacing: .14em; text-transform: uppercase; opacity: .92; }

.icon-btn.small { width: 34px; height: 34px; }
.icon-btn.small svg { width: 17px; height: 17px; }

/* ---------- 详情页头部 ---------- */
.page-head { padding: 40px 0 8px; }
.page-head .back-row { display: flex; align-items: center; gap: 8px; margin-bottom: 18px; }
.page-head h1 { font-size: clamp(26px, 4vw, 34px); font-weight: 700; color: var(--md-on-surface); display: flex; align-items: center; gap: 14px; animation: fadeUp .5s var(--ease-emph) both; }
.page-head h1 .rule { width: 34px; height: 5px; border-radius: 3px; background: linear-gradient(90deg, var(--md-primary), transparent); flex: none; }
.page-head .pdesc { color: var(--md-on-surface-variant); font-size: 15px; margin-top: 12px; max-width: 68ch; animation: fadeUp .55s .06s var(--ease-emph) both; }
.page-head .pcount { margin-top: 12px; font-size: 13px; color: var(--md-outline); display: flex; align-items: center; gap: 6px; animation: fadeUp .55s .1s var(--ease-emph) both; }
.page-head .pcount svg { width: 15px; height: 15px; }

/* ---------- 页脚 ---------- */
.footer { margin-top: 72px; padding: 34px 0 30px; border-top: 1px solid var(--md-outline-variant); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 14px; text-align: center; }
.footer .f-title { font-size: 15px; font-weight: 600; color: var(--md-on-surface); letter-spacing: .02em; }
.footer-notice {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; color: var(--md-on-surface-variant);
  background: color-mix(in srgb, var(--md-on-surface) 4%, transparent);
  border: 1px solid var(--md-outline-variant);
  padding: 8px 18px; border-radius: var(--r-full);
  max-width: 640px; line-height: 1.7;
}
.footer-notice svg { width: 15px; height: 15px; flex: none; color: var(--md-primary); }
.footer .f-copy { font-size: 12px; color: var(--md-outline); }
.footer .admin-link {
  font-size: 12px; color: var(--md-outline);
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 14px; border-radius: var(--r-full);
  transition: color .2s, background .2s;
}
.footer .admin-link:hover { color: var(--md-primary); background: color-mix(in srgb, var(--md-primary) 8%, transparent); }
.footer .admin-link svg { width: 13px; height: 13px; }

/* ---------- 灯箱 ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(8, 10, 14, .9); backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity .3s var(--ease-out);
  padding: 20px;
}
.lightbox.open { opacity: 1; pointer-events: auto; }
.lb-stage { max-width: min(1080px, 92vw); max-height: 100%; display: flex; flex-direction: column; align-items: center; gap: 14px; animation: popIn .35s var(--ease-emph) both; }
.lb-stage img { max-width: min(1080px, 92vw); max-height: 74vh; object-fit: contain; border-radius: var(--r-sm); box-shadow: var(--shadow-3); }
.lb-cap { color: #e8eaf0; font-size: 14.5px; text-align: center; max-width: 720px; line-height: 1.7; }
.lb-meta { display: flex; align-items: center; gap: 12px; color: #b9bdc9; font-size: 13px; }
.lb-meta .brand-logo { color: #d5d8e0; }
.lb-close, .lb-prev, .lb-next {
  position: absolute; width: 46px; height: 46px; border-radius: 50%;
  border: none; background: rgba(255,255,255,.12); color: #fff;
  display: grid; place-items: center; cursor: pointer;
  transition: background .2s;
}
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background: rgba(255,255,255,.24); }
.lb-close { top: 20px; right: 20px; }
.lb-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 20px; top: 50%; transform: translateY(-50%); }
.lb-close svg, .lb-prev svg, .lb-next svg { width: 22px; height: 22px; }
@media (max-width: 640px) { .lb-prev { left: 8px; } .lb-next { right: 8px; } }
.lb-download { display: inline-flex; align-items: center; gap: 8px; background: var(--md-primary); color: #fff; border-radius: var(--r-full); padding: 9px 20px; font-size: 13.5px; font-weight: 600; transition: filter .2s; }
.lb-download:hover { filter: brightness(1.1); }
.lb-download svg { width: 16px; height: 16px; }

/* ---------- 对话框 ---------- */
.dialog-scrim {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(8, 10, 14, .5); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
  opacity: 0; pointer-events: none; transition: opacity .25s var(--ease-out);
}
.dialog-scrim.open { opacity: 1; pointer-events: auto; }
.dialog {
  width: min(440px, 100%); border-radius: var(--r-lg);
  background: var(--md-surface-container-high);
  color: var(--md-on-surface);
  box-shadow: var(--shadow-3);
  padding: 26px 26px 20px;
  animation: popIn .3s var(--ease-emph) both;
}
.dialog h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.dialog p { font-size: 14.5px; color: var(--md-on-surface-variant); margin-bottom: 18px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

/* ---------- Snackbar ---------- */
.snackbar {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 80px);
  z-index: 120; display: flex; align-items: center; gap: 10px;
  background: var(--md-inverse-surface); color: var(--md-inverse-on-surface);
  padding: 12px 20px; border-radius: var(--r-sm);
  box-shadow: var(--shadow-3); font-size: 14px;
  opacity: 0; pointer-events: none;
  transition: transform .3s var(--ease-emph), opacity .3s var(--ease-out);
  max-width: min(560px, calc(100vw - 32px));
}
.snackbar.show { transform: translate(-50%, 0); opacity: 1; pointer-events: auto; }
.snackbar.err { background: var(--md-error); color: var(--md-on-error); }
.snackbar svg { width: 18px; height: 18px; flex: none; }

/* ---------- 表单（后台） ---------- */
.field { position: relative; margin-bottom: 18px; }
.field label {
  display: block; font-size: 12.5px; font-weight: 600; letter-spacing: .04em;
  color: var(--md-on-surface-variant); margin-bottom: 6px;
}
.field input, .field textarea, .field select {
  width: 100%; font-family: inherit; font-size: 15px;
  color: var(--md-on-surface);
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out), background .2s;
}
.field textarea { resize: vertical; min-height: 110px; line-height: 1.7; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--md-primary);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--md-primary) 28%, transparent);
}
.field input::placeholder, .field textarea::placeholder { color: var(--md-outline); }
.field .hint { font-size: 12px; color: var(--md-outline); margin-top: 5px; }

/* ---------- 卡片容器（后台面板等） ---------- */
.panel {
  background: var(--md-surface-container-low);
  border-radius: var(--r-md);
  padding: 24px;
  box-shadow: var(--shadow-1);
}
@media (max-width: 600px) { .panel { padding: 18px; } }
.panel h2 { font-size: 18px; font-weight: 700; color: var(--md-on-surface); margin-bottom: 4px; }
.panel .panel-sub { font-size: 13.5px; color: var(--md-on-surface-variant); margin-bottom: 18px; }

/* ---------- 标签页 ---------- */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 26px; }
.tab {
  position: relative; overflow: hidden;
  border: none; background: transparent; cursor: pointer;
  padding: 10px 20px; border-radius: var(--r-full);
  font-size: 14.5px; font-weight: 600; color: var(--md-on-surface-variant);
  transition: background .2s, color .2s;
  display: inline-flex; align-items: center; gap: 8px;
}
.tab svg { width: 17px; height: 17px; }
.tab:hover { background: color-mix(in srgb, var(--md-on-surface) 6%, transparent); }
.tab.active { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }

/* ---------- 上传拖拽区 ---------- */
.dropzone {
  border: 2px dashed var(--md-outline-variant);
  border-radius: var(--r-md);
  padding: 38px 20px;
  text-align: center; cursor: pointer;
  color: var(--md-on-surface-variant);
  transition: border-color .2s, background .2s, transform .15s;
}
.dropzone:hover, .dropzone.drag { border-color: var(--md-primary); background: color-mix(in srgb, var(--md-primary) 6%, transparent); }
.dropzone.drag { transform: scale(1.01); }
.dropzone svg { width: 44px; height: 44px; margin: 0 auto 10px; color: var(--md-primary); opacity: .85; }
.dropzone .dz-title { font-size: 15px; font-weight: 600; color: var(--md-on-surface); }
.dropzone .dz-sub { font-size: 12.5px; margin-top: 4px; }

/* ---------- 后台照片行 ---------- */
.prow {
  display: grid; grid-template-columns: 28px 96px 1fr; gap: 14px;
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--r-sm);
  padding: 14px 14px 14px 8px;
  margin-bottom: 12px;
  transition: box-shadow .2s, border-color .2s, opacity .2s;
}
.prow:hover { box-shadow: var(--shadow-1); border-color: var(--md-outline); }
.prow.dragging { opacity: .45; border-style: dashed; border-color: var(--md-primary); box-shadow: var(--shadow-2); }
.prow .drag-handle {
  display: grid; place-items: start center;
  color: var(--md-outline); cursor: grab; padding-top: 4px;
  align-self: stretch;
}
.prow .drag-handle:hover { color: var(--md-primary); }
.prow .drag-handle:active { cursor: grabbing; }
.prow .drag-handle svg { width: 20px; height: 20px; }
.prow .pthumb {
  width: 96px; height: 72px; border-radius: 8px; object-fit: cover;
  background: var(--md-surface-container-highest);
}
.prow .pfields { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.prow .row1 { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.prow input[type="text"] {
  flex: 1; min-width: 140px;
  font-family: inherit; font-size: 13.5px; color: var(--md-on-surface);
  background: var(--md-surface-container);
  border: 1px solid var(--md-outline-variant); border-radius: 8px;
  padding: 8px 10px;
}
.prow input[type="text"]:focus { outline: none; border-color: var(--md-primary); box-shadow: 0 0 0 2px color-mix(in srgb, var(--md-primary) 25%, transparent); }
.prow textarea {
  width: 100%; font-family: inherit; font-size: 13.5px; color: var(--md-on-surface);
  background: var(--md-surface-container); border: 1px solid var(--md-outline-variant);
  border-radius: 8px; padding: 8px 10px; resize: vertical; min-height: 44px; line-height: 1.6;
}
.prow textarea:focus { outline: none; border-color: var(--md-primary); box-shadow: 0 0 0 2px color-mix(in srgb, var(--md-primary) 25%, transparent); }
.prow .row-actions { display: flex; gap: 4px; align-items: center; margin-left: auto; }
.prow .save-state { font-size: 11.5px; color: var(--md-outline); margin-right: 6px; }
.prow .brand-preview { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--md-on-surface-variant); }

/* ---------- 登录 / 建号页 ---------- */
.auth-wrap { position: relative; z-index: 1; min-height: calc(100vh - var(--header-h) - 200px); display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.auth-card {
  width: min(420px, 100%);
  background: var(--md-surface-container-low);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-2);
  padding: 36px 34px;
  animation: popIn .4s var(--ease-emph) both;
}
.auth-card .auth-logo {
  width: 56px; height: 56px; border-radius: 16px; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--md-primary), color-mix(in srgb, var(--md-primary) 60%, #00BCD4));
  display: grid; place-items: center; color: #fff; box-shadow: var(--shadow-2);
}
.auth-card .auth-logo svg { width: 30px; height: 30px; }
.auth-card h1 { font-size: 22px; font-weight: 700; text-align: center; color: var(--md-on-surface); margin-bottom: 6px; }
.auth-card .auth-sub { text-align: center; font-size: 13.5px; color: var(--md-on-surface-variant); margin-bottom: 24px; }

/* ---------- 后台布局 ---------- */
.admin-body { background: var(--md-background); }
.admin-head h1 { font-size: 24px; font-weight: 700; color: var(--md-on-surface); display: flex; align-items: center; gap: 12px; margin-bottom: 4px; }
.admin-head h1 svg { width: 26px; height: 26px; color: var(--md-primary); }
.admin-head .admin-sub { color: var(--md-on-surface-variant); font-size: 14px; margin-bottom: 24px; }
.admin-section { margin-bottom: 34px; }
.admin-section > h2 { font-size: 16.5px; font-weight: 700; color: var(--md-on-surface); margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.admin-section > h2 svg { width: 19px; height: 19px; color: var(--md-primary); }

.avatar-editor { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.avatar-editor .avatar { width: 108px; height: 108px; }

.upload-progress { margin: 12px 0; display: flex; flex-direction: column; gap: 6px; }
.upload-progress .bar { height: 6px; border-radius: 3px; background: var(--md-surface-container-high); overflow: hidden; }
.upload-progress .bar i { display: block; height: 100%; width: 0; background: var(--md-primary); border-radius: 3px; transition: width .3s var(--ease-out); }
.upload-progress .txt { font-size: 12.5px; color: var(--md-on-surface-variant); }

/* 提示条 */
.callout {
  display: flex; gap: 10px; align-items: flex-start;
  background: var(--md-secondary-container); color: var(--md-on-secondary-container);
  border-radius: var(--r-sm); padding: 12px 16px; font-size: 13.5px; line-height: 1.7;
  margin-bottom: 18px;
}
.callout svg { width: 18px; height: 18px; flex: none; margin-top: 2px; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--md-outline-variant); border-radius: 6px; border: 2px solid var(--md-background); }
::-webkit-scrollbar-thumb:hover { background: var(--md-outline); }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- 悬浮按钮（FAB，管理员登录后显示） ---------- */
.fab-wrap { position: fixed; right: 24px; bottom: 26px; z-index: 70; animation: popIn .4s var(--ease-emph) both; }
.fab {
  display: inline-flex; align-items: center; gap: 10px;
  height: 56px; padding: 0 24px 0 20px;
  background: var(--md-primary-container); color: var(--md-on-primary-container);
  border-radius: 16px;
  box-shadow: var(--shadow-3);
  font-size: 14.5px; font-weight: 700; letter-spacing: .01em;
  transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out), filter .2s;
}
.fab:hover { transform: translateY(-3px); filter: brightness(1.03); }
.fab svg { width: 22px; height: 22px; }
@media (max-width: 600px) { .fab-wrap { right: 16px; bottom: 18px; } .fab { height: 52px; padding: 0 18px 0 16px; } }

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