/* ==========================================================================
   微光摄影社 · Glimmer Photography Agency
   设计系统 —— "明亮胶片感" Bright Film
   柳铁一中微光摄影社 · 学生自主运营
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 纸与墨 */
  --paper:        #F7F2E9;
  --paper-2:      #EFE8DB;
  --paper-3:      #E6DDCD;
  --card:         #FFFDF8;
  --ink:          #1A1613;
  --ink-2:        #4C433A;
  --ink-3:        #8B8073;
  --ink-4:        #B3A89A;

  /* 强调色：暗房红 + 暖金 */
  --red:          #B03A22;
  --red-soft:     #C9553A;
  --gold:         #BF8B34;
  --gold-soft:    #D9A94E;

  /* 线 */
  --line:         rgba(26, 22, 19, .12);
  --line-soft:    rgba(26, 22, 19, .07);
  --line-strong:  rgba(26, 22, 19, .22);

  /* 字体 */
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono:  "SF Mono", "JetBrains Mono", "Cascadia Code", Consolas, monospace;

  /* 度量 */
  --wrap:   1240px;
  --wrap-n: 980px;
  --gap:    clamp(20px, 3vw, 40px);
  --sec-y:  clamp(76px, 11vw, 168px);
  --r:      4px;
  --r-lg:   10px;

  /* 阴影 */
  --sh-1: 0 1px 2px rgba(26,22,19,.05), 0 6px 18px -8px rgba(26,22,19,.14);
  --sh-2: 0 2px 6px rgba(26,22,19,.06), 0 22px 50px -20px rgba(26,22,19,.24);
  --sh-3: 0 40px 90px -30px rgba(26,22,19,.42);

  --ease: cubic-bezier(.22, .68, .24, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

/* ---------- 2. 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .012em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* 胶片颗粒 —— 全局覆膜 */
body::after {
  content: "";
  position: fixed;
  inset: -50%;
  z-index: 9000;
  pointer-events: none;
  opacity: .05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='320' height='320'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='320' height='320' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grainShift 1.1s steps(3) infinite;
}
@keyframes grainShift {
  0%   { transform: translate(0, 0); }
  33%  { transform: translate(-2%, 1.5%); }
  66%  { transform: translate(1.5%, -2%); }
  100% { transform: translate(0, 0); }
}

/* 纸面纹理光晕 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1100px 620px at 82% -8%,  rgba(191,139,52,.13), transparent 62%),
    radial-gradient(900px 560px at 4% 34%,   rgba(176,58,34,.06),  transparent 60%),
    radial-gradient(1200px 700px at 60% 108%, rgba(191,139,52,.08), transparent 66%);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }

::selection { background: var(--red); color: #fff; }

:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
  border-radius: 2px;
}

/* 滚动条 */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--paper-2); }
::-webkit-scrollbar-thumb {
  background: var(--ink-4);
  border-radius: 99px;
  border: 3px solid var(--paper-2);
}
::-webkit-scrollbar-thumb:hover { background: var(--ink-3); }

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.01em;
  margin: 0;
  color: var(--ink);
}

.display {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(2.9rem, 8.2vw, 7.4rem);
  line-height: 1.02;
  letter-spacing: -.022em;
  margin: 0;
}

.h1 { font-size: clamp(2.1rem, 4.6vw, 3.9rem); line-height: 1.16; }
.h2 { font-size: clamp(1.72rem, 3.3vw, 2.85rem); line-height: 1.2; }
.h3 { font-size: clamp(1.22rem, 2vw, 1.6rem); line-height: 1.34; }

.lede {
  font-size: clamp(1.02rem, 1.5vw, 1.24rem);
  line-height: 1.95;
  color: var(--ink-2);
  letter-spacing: .01em;
}

.muted { color: var(--ink-3); }
.serif { font-family: var(--serif); }

/* 章节眉标：ACT Ⅰ / 01 —— 影视剧片头感 */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .8em;
  font-family: var(--mono);
  font-size: .685rem;
  font-weight: 500;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.eyebrow::before {
  content: "";
  width: 34px; height: 1px;
  background: var(--ink-4);
  flex: none;
}
.eyebrow--red { color: var(--red); }
.eyebrow--red::before { background: var(--red); }
.eyebrow--light { color: rgba(255,255,255,.62); }
.eyebrow--light::before { background: rgba(255,255,255,.42); }

/* 竖排小字 */
.vertical {
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: .32em;
  font-family: var(--serif);
}

/* 中文标题里的装饰性分隔 */
.dot-sep {
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--gold);
  vertical-align: middle;
  margin: 0 .55em .18em;
}

/* ---------- 4. 布局 ---------- */
.wrap   { width: min(100% - 2 * clamp(18px, 4vw, 52px), var(--wrap));   margin-inline: auto; position: relative; z-index: 1; }
.wrap-n { width: min(100% - 2 * clamp(18px, 4vw, 52px), var(--wrap-n)); margin-inline: auto; position: relative; z-index: 1; }
.section { padding-block: var(--sec-y); position: relative; }

.rule {
  height: 1px; border: 0; margin: 0;
  background: linear-gradient(90deg, var(--line-strong), var(--line-soft) 46%, transparent);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: clamp(16px, 4vw, 56px);
  margin-bottom: clamp(34px, 5vw, 66px);
}
.section-head__no {
  font-family: var(--mono);
  font-size: clamp(3rem, 9vw, 6.6rem);
  line-height: .78;
  font-weight: 500;
  color: transparent;
  -webkit-text-stroke: 1px var(--ink-4);
  letter-spacing: -.04em;
  user-select: none;
}

/* ---------- 5. 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 800;
  background: rgba(247, 242, 233, 0);
  border-bottom: 1px solid transparent;
  transition: background .45s var(--ease), border-color .45s var(--ease), backdrop-filter .45s;
}
.nav.is-stuck {
  background: rgba(247, 242, 233, .82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom-color: var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: clamp(62px, 7vw, 78px);
}
.nav__brand { display: flex; align-items: center; gap: 12px; flex: none; }
.nav__brand img { height: clamp(27px, 2.8vw, 33px); width: auto; }
.nav__brand-txt {
  display: flex; flex-direction: column;
  line-height: 1.16;
  font-family: var(--serif);
  font-weight: 900;
  font-size: .95rem;
  letter-spacing: .06em;
}
.nav__brand-txt small {
  font-family: var(--mono);
  font-size: .53rem;
  font-weight: 400;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.nav__links { display: flex; align-items: center; gap: clamp(10px, 2.1vw, 30px); }
.nav__link {
  position: relative;
  font-size: .875rem;
  letter-spacing: .1em;
  color: var(--ink-2);
  padding: 6px 2px;
  transition: color .3s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .42s var(--ease-out);
}
.nav__link:hover { color: var(--ink); }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--ink); font-weight: 600; }

.nav__cta {
  font-size: .82rem;
  letter-spacing: .12em;
  padding: 9px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  transition: background .35s var(--ease), color .35s var(--ease), border-color .35s;
}
.nav__cta:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.nav__cta.is-active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.nav__burger {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: none;
  cursor: pointer;
  position: relative;
}
.nav__burger i {
  position: absolute; left: 50%; top: 50%;
  width: 15px; height: 1.5px;
  background: var(--ink);
  transform: translate(-50%, -50%);
  transition: transform .3s var(--ease), opacity .3s;
}
.nav__burger i:nth-child(1) { transform: translate(-50%, -6px); }
.nav__burger i:nth-child(3) { transform: translate(-50%, 6px); }
.nav__burger.is-open i:nth-child(1) { transform: translate(-50%, -50%) rotate(45deg); }
.nav__burger.is-open i:nth-child(2) { opacity: 0; }
.nav__burger.is-open i:nth-child(3) { transform: translate(-50%, -50%) rotate(-45deg); }

.nav__drawer {
  position: fixed;
  inset: 0;
  z-index: 790;
  background: var(--paper);
  padding: 100px clamp(24px, 8vw, 60px) 44px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-101%);
  transition: transform .62s var(--ease-out);
  overflow-y: auto;
}
.nav__drawer.is-open { transform: translateY(0); }
.nav__drawer a {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(1.8rem, 8vw, 2.6rem);
  line-height: 1.5;
  padding: 6px 0;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  align-items: baseline;
  gap: .6em;
}
.nav__drawer a span {
  font-family: var(--mono);
  font-size: .6rem;
  font-weight: 400;
  color: var(--ink-4);
  letter-spacing: .2em;
}
.nav__drawer-foot {
  margin-top: auto;
  padding-top: 32px;
  font-size: .78rem;
  color: var(--ink-3);
  line-height: 2;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .7em;
  padding: 15px 32px;
  border-radius: 99px;
  font-size: .875rem;
  letter-spacing: .13em;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  transition: transform .38s var(--ease), background .38s var(--ease), color .38s, box-shadow .38s;
  box-shadow: var(--sh-1);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--sh-2); background: var(--red); border-color: var(--red); }
.btn__arrow { transition: transform .38s var(--ease-out); }
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); box-shadow: none; }
.btn--ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.btn--light { background: transparent; color: #fff; border-color: rgba(255,255,255,.42); box-shadow: none; }
.btn--light:hover { background: #fff; color: var(--ink); border-color: #fff; }

.btn--sm { padding: 11px 22px; font-size: .8rem; }

/* ---------- 7. 照片：相纸白框 ---------- */
.frame {
  position: relative;
  background: var(--card);
  padding: clamp(8px, 1vw, 13px);
  border-radius: 3px;
  box-shadow: var(--sh-1);
  transition: transform .6s var(--ease-out), box-shadow .6s var(--ease);
  overflow: hidden;
}
.frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 1px;
  background: var(--paper-3);
}
.frame__cap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 3px 1px;
  font-family: var(--mono);
  font-size: .6rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.frame__cap b { font-weight: 500; color: var(--ink-2); }

/* 冲印相纸的暖调覆膜 */
.frame__tone {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(160deg, rgba(191,139,52,.10), rgba(176,58,34,.05) 52%, rgba(191,139,52,.07));
  mix-blend-mode: multiply;
  opacity: .8;
}

/* ---------- 8. 滚动入场 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 1s var(--ease-out), transform 1.05s var(--ease-out);
  transition-delay: var(--d, 0ms);
  will-change: opacity, transform;
}
[data-reveal].is-in { opacity: 1; transform: none; }

[data-reveal="mask"] { clip-path: inset(0 0 100% 0); transform: none; }
[data-reveal="mask"].is-in { clip-path: inset(0 0 0 0); transition: clip-path 1.15s var(--ease-out); }

[data-reveal="scale"] { transform: scale(1.04); opacity: 0; }
[data-reveal="scale"].is-in { transform: none; opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1 !important; transform: none !important; clip-path: none !important; }
  body::after { animation: none; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- 9. 页脚 ---------- */
.foot {
  background: var(--ink);
  color: rgba(255,255,255,.72);
  padding: clamp(52px, 7vw, 92px) 0 34px;
  margin-top: var(--sec-y);
  position: relative;
  overflow: hidden;
}
.foot::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(760px 340px at 88% 0%, rgba(191,139,52,.20), transparent 66%),
              radial-gradient(620px 320px at 6% 100%, rgba(176,58,34,.22), transparent 62%);
  pointer-events: none;
}
.foot__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 1fr));
  gap: clamp(30px, 5vw, 66px);
  position: relative;
}
.foot h4 {
  color: #fff;
  font-size: .78rem;
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: .26em;
  text-transform: uppercase;
  margin-bottom: 18px;
  opacity: .58;
}
.foot a { transition: color .3s, opacity .3s; }
.foot a:hover { color: var(--gold-soft); }
.foot__links { display: flex; flex-direction: column; gap: 9px; font-size: .875rem; }
.foot__logo { height: 40px; width: auto; margin-bottom: 18px; }
.foot__slogan {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.7;
  letter-spacing: .04em;
}
.foot__bar {
  margin-top: clamp(38px, 5vw, 64px);
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.12);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  justify-content: space-between;
  font-size: .72rem;
  line-height: 1.9;
  color: rgba(255,255,255,.44);
  position: relative;
}

/* ---------- 10. 灯箱 ---------- */
.lb {
  position: fixed;
  inset: 0;
  z-index: 9500;
  display: none;
  background: rgba(18, 15, 13, .93);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
}
.lb.is-open { display: grid; grid-template-rows: auto 1fr auto; }
.lb__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px clamp(14px, 3vw, 30px);
  color: rgba(255,255,255,.72);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.lb__stage {
  position: relative;
  display: grid;
  place-items: center;
  padding: 0 clamp(14px, 3vw, 30px);
  min-height: 0;
}
.lb__img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  object-fit: contain;
  border-radius: 2px;
  box-shadow: var(--sh-3);
  animation: lbIn .5s var(--ease-out);
}
@keyframes lbIn { from { opacity: 0; transform: scale(.975); } to { opacity: 1; transform: none; } }
.lb__cap {
  padding: 14px clamp(14px, 3vw, 30px) 22px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  color: #fff;
}
.lb__cap h3 { color: #fff; font-size: clamp(1.05rem, 2vw, 1.5rem); }
.lb__cap p { margin: 0; color: rgba(255,255,255,.5); font-size: .78rem; letter-spacing: .1em; }
.lb__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.28);
  background: rgba(255,255,255,.07);
  color: #fff;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background .3s, border-color .3s, transform .3s;
  backdrop-filter: blur(4px);
}
.lb__nav:hover { background: rgba(255,255,255,.18); border-color: rgba(255,255,255,.6); }
.lb__nav--prev { left: clamp(10px, 2.4vw, 30px); }
.lb__nav--next { right: clamp(10px, 2.4vw, 30px); }
.lb__close {
  border: 1px solid rgba(255,255,255,.28);
  background: none;
  color: #fff;
  border-radius: 99px;
  padding: 7px 16px;
  cursor: pointer;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .18em;
  transition: background .3s, color .3s;
}
.lb__close:hover { background: #fff; color: var(--ink); }
.lb__count { font-variant-numeric: tabular-nums; }

/* ---------- 11. 通用小组件 ---------- */
.tag {
  display: inline-block;
  padding: 5px 13px;
  border: 1px solid var(--line);
  border-radius: 99px;
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--ink-3);
  background: rgba(255,255,255,.5);
}

.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__n {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  font-weight: 900;
  line-height: 1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.stat__n em { font-style: normal; font-size: .42em; color: var(--gold); margin-left: .18em; }
.stat__l { font-size: .76rem; letter-spacing: .16em; color: var(--ink-3); }

.kv { border-top: 1px solid var(--line); padding: 20px 0; display: grid; grid-template-columns: 118px minmax(0,1fr); gap: 18px; }
.kv dt { font-size: .72rem; letter-spacing: .18em; color: var(--ink-3); font-family: var(--mono); text-transform: uppercase; padding-top: 4px; }
.kv dd { margin: 0; color: var(--ink-2); }

/* 卷轴进场条 */
.marquee {
  overflow: hidden;
  border-block: 1px solid var(--line);
  padding: 17px 0;
  background: var(--paper-2);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee__track { display: flex; width: max-content; animation: marquee 42s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 2.2vw, 1.7rem);
  font-weight: 900;
  letter-spacing: .06em;
  padding-inline: 26px;
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: 26px;
  white-space: nowrap;
}
.marquee__item::after { content: "◦"; color: var(--gold); font-size: .7em; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* 调试 / 截图模式：?shot=1 —— 关闭一切动效，直接呈现最终状态 */
html.no-anim *,
html.no-anim *::before,
html.no-anim *::after {
  transition: none !important;
  animation: none !important;
}
html.no-anim [data-reveal] { opacity: 1 !important; transform: none !important; clip-path: none !important; }

/* ==========================================================================
   13. 片头遮罩
   ========================================================================== */
.curtain {
  position: fixed;
  inset: 0;
  z-index: 9800;
  background: var(--paper);
  display: grid;
  place-items: center;
  transition: transform 1s var(--ease-out), opacity .85s ease .12s;
}
.curtain.is-up { transform: translateY(-101%); opacity: 0; }
.curtain__inner { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.curtain__mark {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(2.4rem, 7vw, 4rem);
  letter-spacing: .1em;
  color: var(--ink);
  animation: curtainMark 1.5s var(--ease-out) both;
}
@keyframes curtainMark {
  from { opacity: 0; transform: translateY(14px) scale(.96); letter-spacing: .5em; }
  to   { opacity: 1; transform: none; letter-spacing: .1em; }
}
.curtain__bar {
  width: 78px; height: 1px;
  background: var(--ink-4);
  position: relative;
  overflow: hidden;
}
.curtain__bar::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--red);
  transform-origin: left;
  animation: curtainBar 1.25s var(--ease-out) both;
}
@keyframes curtainBar { from { transform: scaleX(0); } to { transform: scaleX(1); } }

/* ==========================================================================
   14. 首页 Hero —— 电影开场
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #16130F;
  color: #fff;
  margin-top: calc(-1 * clamp(62px, 7vw, 78px));
}
.hero__slides { position: absolute; inset: 0; }
.hero__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.6s var(--ease-out);
}
.hero__slide.is-on { opacity: 1; }
.hero__slide img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 56%;
  transform: scale(1.06);
  filter: saturate(1.1) contrast(1.05) brightness(1.14);
}
.hero__slide.is-on img { animation: kenburns 9s var(--ease-out) both; }
@keyframes kenburns { from { transform: scale(1.15) translate3d(0,1.4%,0); } to { transform: scale(1.03) translate3d(0,0,0); } }

.hero__veil {
  position: absolute; inset: 0;
  background:
    linear-gradient(to bottom, rgba(11,8,6,.52) 0%, rgba(11,8,6,.16) 14%, transparent 26%),
    linear-gradient(to top,  rgba(11,8,6,.90) 0%, rgba(11,8,6,.44) 20%, rgba(11,8,6,.10) 48%, rgba(11,8,6,.26) 74%, rgba(11,8,6,.62) 100%),
    linear-gradient(to right, rgba(11,8,6,.72) 0%, rgba(11,8,6,.28) 40%, rgba(11,8,6,0) 76%);
}
.hero__tone {
  position: absolute; inset: 0;
  background: linear-gradient(200deg, rgba(191,139,52,.20), transparent 46%, rgba(176,58,34,.16));
  mix-blend-mode: soft-light;
}

.hero__inner {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: clamp(20px, 3vw, 34px);
  padding-block: clamp(66px, 8vw, 92px) clamp(30px, 3.6vw, 50px);
}
.hero__topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 22px;
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: rgba(255,255,255,.78);
  border-top: 1px solid rgba(255,255,255,.24);
  padding-top: 14px;
  text-shadow: 0 1px 5px rgba(0,0,0,.9), 0 0 20px rgba(0,0,0,.6);
  flex: none;
}
.hero__topbar b { font-weight: 500; color: #fff; }

.hero__main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: clamp(18px, 3vw, 46px);
}
.hero__kicker {
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 0 0 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,.6);
}
.hero__title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(2.9rem, 10.5vw, 8.2rem);
  line-height: 1;
  letter-spacing: .06em;
  margin: 0 0 16px;
  color: #fff;
  text-shadow: 0 20px 54px rgba(0,0,0,.5);
}
.hero__title i {
  display: block;
  font-style: normal;
  font-size: .24em;
  letter-spacing: .3em;
  font-weight: 900;
  color: rgba(255,255,255,.78);
  margin-top: .62em;
  text-shadow: none;
}
.hero__slogan {
  font-family: var(--serif);
  font-size: clamp(.98rem, 1.75vw, 1.42rem);
  letter-spacing: .1em;
  color: rgba(255,255,255,.94);
  margin: 0;
  max-width: 46ch;
  line-height: 1.75;
  text-shadow: 0 3px 18px rgba(0,0,0,.6);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 28px; }

.hero__footbar {
  margin-top: 0;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,.2);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 32px;
  flex-wrap: wrap;
  flex: none;
}
.hero__dots { display: flex; align-items: center; gap: 9px; }
.hero__dot {
  width: 30px; height: 2px;
  background: rgba(255,255,255,.28);
  border: 0; padding: 0;
  cursor: pointer;
  transition: background .4s, width .5s var(--ease-out);
}
.hero__dot.is-on { background: var(--gold-soft); width: 54px; }
.hero__hint {
  font-family: var(--mono);
  font-size: .63rem;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: rgba(255,255,255,.55);
  display: flex;
  align-items: center;
  gap: 11px;
}
.hero__hint span { animation: bob 2.4s ease-in-out infinite; display: inline-block; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(5px); } }

@media (max-width: 900px) {
  .hero__topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 7px;
    font-size: .58rem;
    letter-spacing: .16em;
  }
  .hero__title i { letter-spacing: .3em; }
  .hero__footbar { gap: 14px; }
  .hero__hint { display: none; }
}

/* ==========================================================================
   15. 理念 / 引文
   ========================================================================== */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(26px, 5vw, 76px);
  align-items: center;
}
.split--rev > :first-child { order: 2; }

.quote {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.6vw, 3rem);
  line-height: 1.5;
  letter-spacing: .04em;
  margin: 0;
}
.quote::before {
  content: "「";
  color: var(--gold);
  margin-right: .08em;
}
.quote::after {
  content: "」";
  color: var(--gold);
  margin-left: .08em;
}

.prose p { margin: 0 0 1.15em; color: var(--ink-2); line-height: 1.95; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--ink); font-weight: 600; }

/* 引言块 */
.pull {
  border-left: 2px solid var(--red);
  padding: 4px 0 4px clamp(18px, 2.4vw, 30px);
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.9vw, 1.4rem);
  line-height: 1.85;
  color: var(--ink);
  font-weight: 600;
}

/* 编号列表 */
.nlist { counter-reset: n; display: grid; gap: 0; }
.nlist__item {
  counter-increment: n;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(16px, 2.6vw, 34px);
  padding: clamp(20px, 2.8vw, 32px) 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.nlist__item:last-child { border-bottom: 1px solid var(--line); }
.nlist__item::before {
  content: counter(n, decimal-leading-zero);
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--gold);
  padding-top: .42em;
}
.nlist__item h3 { margin-bottom: .4em; }
.nlist__item p { margin: 0; color: var(--ink-2); }

/* ==========================================================================
   16. 作品网格 + 筛选
   ========================================================================== */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: clamp(26px, 3.4vw, 42px);
}
.filter {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.55);
  border-radius: 99px;
  padding: 9px 20px;
  font-size: .8rem;
  letter-spacing: .1em;
  color: var(--ink-2);
  cursor: pointer;
  transition: all .34s var(--ease);
  display: inline-flex;
  align-items: center;
  gap: .55em;
}
.filter b {
  font-family: var(--mono);
  font-size: .62rem;
  font-weight: 400;
  color: var(--ink-4);
  transition: color .34s;
}
.filter:hover { border-color: var(--ink-3); color: var(--ink); }
.filter.is-on { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.filter.is-on b { color: var(--gold-soft); }

/* 瀑布流：作品比例天生有横有竖，用多列排布让参差看起来是画册感，而不是"行内留白" */
.grid-works {
  columns: 3;
  column-gap: clamp(14px, 2vw, 28px);
}
.grid-works--wide { columns: 4; }

.work {
  position: relative;
  cursor: zoom-in;
  border: 0; padding: 0; background: none;
  text-align: left;
  display: block;
  width: 100%;
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  page-break-inside: avoid;
  margin: 0 0 clamp(16px, 2.2vw, 30px);
  animation: workIn .7s var(--ease-out) both;
}
@keyframes workIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.work__ph {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: 3px;
  background: var(--paper-3);
  box-shadow: var(--sh-1);
  transition: box-shadow .5s var(--ease), transform .55s var(--ease-out);
}
.work__ph::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(20,16,13,.72), rgba(20,16,13,.08) 46%, transparent 72%);
  opacity: 0;
  transition: opacity .5s var(--ease);
  pointer-events: none;
}
.work img {
  width: 100%;
  height: auto;              /* 必须显式声明：否则 <img height> 属性会被当成固定高度，aspect-ratio 失效 */
  aspect-ratio: var(--ar, 3 / 2);
  object-fit: cover;
  transition: transform .95s var(--ease-out), filter .5s;
  display: block;
}
.work:hover .work__ph { transform: translateY(-5px); box-shadow: var(--sh-2); }
.work:hover .work__ph::after { opacity: 1; }
.work:hover img { transform: scale(1.055); }

.work__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 3px 0;
}
.work__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: .98rem;
  letter-spacing: .02em;
  color: var(--ink);
}
.work__group {
  font-family: var(--mono);
  font-size: .6rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-4);
  white-space: nowrap;
}
.work__zoom {
  position: absolute;
  right: 13px; bottom: 13px;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,.94);
  color: var(--ink);
  display: grid;
  place-items: center;
  opacity: 0;
  transform: translateY(8px) scale(.9);
  transition: all .42s var(--ease-out);
  box-shadow: var(--sh-1);
  pointer-events: none;
}
.work:hover .work__zoom { opacity: 1; transform: none; }

.work.is-hidden { display: none; }

.works-more {
  margin-top: clamp(30px, 4.4vw, 54px);
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.works-empty {
  text-align: center;
  padding: 70px 0;
  color: var(--ink-3);
  font-family: var(--serif);
  font-size: 1.1rem;
}

@media (max-width: 1000px) {
  .grid-works { columns: 2; }
  .grid-works--wide { columns: 2; }
}
@media (max-width: 620px) {
  .split { grid-template-columns: 1fr; }
  .split--rev > :first-child { order: 0; }
}

/* ==========================================================================
   17. 分屏 / 双栏图组
   ========================================================================== */
.duo {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 26px);
}
.duo .frame:first-child { transform: translateY(clamp(-26px, -3vw, -10px)) rotate(-.5deg); }
.duo .frame:last-child  { transform: translateY(clamp(10px, 3vw, 26px)) rotate(.5deg); }
.duo:hover .frame { transform: translateY(0) rotate(0); }

.trio {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(12px, 1.8vw, 22px);
  align-items: start;
}
.trio > :nth-child(2) { margin-top: clamp(18px, 3.4vw, 44px); }

/* 横幅宽图 */
.banner-img {
  position: relative;
  border-radius: 3px;
  overflow: hidden;
  box-shadow: var(--sh-2);
  aspect-ratio: 21 / 9;
  background: var(--paper-3);
}
.banner-img img { width: 100%; height: 100%; object-fit: cover; }
.banner-img__cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: clamp(20px, 3vw, 42px);
  background: linear-gradient(to top, rgba(16,13,11,.85), transparent);
  color: #fff;
}
.banner-img__cap h3 { color: #fff; margin-bottom: .3em; }
.banner-img__cap p { margin: 0; font-size: .85rem; color: rgba(255,255,255,.74); letter-spacing: .04em; }

@media (max-width: 620px) {
  .duo { grid-template-columns: 1fr; }
  .duo .frame:first-child, .duo .frame:last-child { transform: none; }
  .trio { grid-template-columns: 1fr; }
  .trio > :nth-child(2) { margin-top: 0; }
  .banner-img { aspect-ratio: 4 / 3; }
}

/* ==========================================================================
   18. 深色区块（戏剧段落）
   ========================================================================== */
.dark {
  background: #17130F;
  color: rgba(255,255,255,.78);
  position: relative;
  overflow: hidden;
  padding-block: var(--sec-y);
}
.dark::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(880px 460px at 76% 10%, rgba(191,139,52,.19), transparent 64%),
              radial-gradient(700px 400px at 8% 96%, rgba(176,58,34,.20), transparent 62%);
  pointer-events: none;
}
.dark h1, .dark h2, .dark h3, .dark h4 { color: #fff; }
.dark .lede { color: rgba(255,255,255,.72); }
.dark .quote { color: #fff; }
.dark .prose p { color: rgba(255,255,255,.74); }
.dark .prose strong { color: #fff; }
.dark .nlist__item { border-color: rgba(255,255,255,.14); }
.dark .nlist__item h3 { color: #fff; }
.dark .nlist__item p { color: rgba(255,255,255,.72); }
.dark .tag { border-color: rgba(255,255,255,.2); color: rgba(255,255,255,.7); background: rgba(255,255,255,.05); }
.dark .stat__n { color: #fff; }
.dark .stat__l { color: rgba(255,255,255,.55); }
.dark .kv { border-color: rgba(255,255,255,.14); }
.dark .kv dt { color: rgba(255,255,255,.5); }
.dark .kv dd { color: rgba(255,255,255,.78); }
.dark .rule { background: linear-gradient(90deg, rgba(255,255,255,.3), rgba(255,255,255,.06) 46%, transparent); }
.dark .section-head__no { -webkit-text-stroke-color: rgba(255,255,255,.3); }
.dark .step { border-top-color: var(--gold-soft); }
.dark .step__no { color: var(--gold-soft); }
.dark .works-empty { color: rgba(255,255,255,.5); }

/* 全出血大图段落 */
.fullbleed {
  position: relative;
  min-height: clamp(420px, 76vh, 780px);
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
}
.fullbleed img.bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.fullbleed__veil {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(11,8,6,.90) 0%, rgba(11,8,6,.52) 34%, rgba(11,8,6,.22) 62%, rgba(11,8,6,.34) 100%);
}
.fullbleed__body { position: relative; padding-block: clamp(46px, 8vw, 96px); }
.fullbleed h1, .fullbleed h2, .fullbleed h3, .fullbleed h4 { color: #fff; }
.fullbleed .lede { color: rgba(255,255,255,.82); }
.fullbleed .stat__n { color: #fff; }
.fullbleed .stat__l { color: rgba(255,255,255,.62); }
.fullbleed .stat__n em { color: var(--gold-soft); }

/* ==========================================================================
   19. 数据条
   ========================================================================== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(20px, 3.4vw, 46px);
}
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ==========================================================================
   20. 关于页
   ========================================================================== */
.page-head {
  padding-top: clamp(110px, 15vw, 176px);
  padding-bottom: clamp(38px, 5vw, 62px);
  position: relative;
}
.page-head__title {
  font-size: clamp(2.5rem, 7vw, 5.4rem);
  line-height: 1.06;
  letter-spacing: -.015em;
  margin: 20px 0 22px;
}
.page-head__lede { max-width: 62ch; }

.infobar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 40px);
  padding: clamp(22px, 3vw, 32px) 0;
  border-block: 1px solid var(--line);
  margin-top: clamp(28px, 4vw, 46px);
}
@media (max-width: 760px) { .infobar { grid-template-columns: 1fr; } }

/* 承诺卡片 */
.pledges {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 24px);
}
.pledge {
  background: var(--card);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  padding: clamp(22px, 2.8vw, 34px);
  box-shadow: var(--sh-1);
  transition: transform .5s var(--ease-out), box-shadow .5s;
}
.pledge:hover { transform: translateY(-4px); box-shadow: var(--sh-2); }
.pledge__ico {
  width: 42px; height: 42px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--paper-2);
  margin-bottom: 18px;
}
.pledge h3 { font-size: 1.14rem; margin-bottom: .55em; }
.pledge p { margin: 0; font-size: .9rem; color: var(--ink-2); line-height: 1.9; }
@media (max-width: 860px) { .pledges { grid-template-columns: 1fr; } }

/* 团队成员 / 岗位 */
.roles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(14px, 2vw, 22px); }
@media (max-width: 720px) { .roles { grid-template-columns: 1fr; } }
.role {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(20px, 2.6vw, 30px);
  background: rgba(255,255,255,.5);
}
.role h3 { font-size: 1.06rem; margin-bottom: .45em; }
.role p { margin: 0; font-size: .875rem; color: var(--ink-2); }

/* ==========================================================================
   21. 加入页
   ========================================================================== */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(16px, 2.4vw, 28px); }
.step { position: relative; padding-top: 26px; border-top: 2px solid var(--ink); }
.step__no {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .2em;
  color: var(--red);
  display: block;
  margin-bottom: 12px;
}
.step h3 { font-size: 1.05rem; margin-bottom: .5em; }
.step p { margin: 0; font-size: .855rem; color: var(--ink-2); }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

.form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(24px, 3.4vw, 46px);
  box-shadow: var(--sh-1);
}
.field { margin-bottom: 22px; }
.field label {
  display: block;
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--ink-3);
  font-family: var(--mono);
  text-transform: uppercase;
  margin-bottom: 9px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--paper);
  font: inherit;
  font-size: .92rem;
  color: var(--ink);
  transition: border-color .3s, background .3s, box-shadow .3s;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--red);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(176,58,34,.09);
}
.field--row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 620px) { .field--row { grid-template-columns: 1fr; } }

.checks { display: flex; flex-wrap: wrap; gap: 10px; }
.check {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .55em;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 99px;
  font-size: .84rem;
  cursor: pointer;
  transition: all .3s var(--ease);
  background: var(--paper);
  user-select: none;
}
.check input { position: absolute; opacity: 0; pointer-events: none; }
.check:hover { border-color: var(--ink-3); }
.check:has(input:checked) { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.check:has(input:focus-visible) { outline: 2px solid var(--red); outline-offset: 2px; }

.form__note {
  margin-top: 20px;
  font-size: .78rem;
  color: var(--ink-3);
  line-height: 1.9;
}

.faq { display: grid; gap: 0; }
.faq details {
  border-top: 1px solid var(--line);
  padding: 4px 0;
}
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: clamp(18px, 2.4vw, 26px) 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  transition: color .3s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--sans);
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--ink-4);
  transition: transform .4s var(--ease-out), color .3s;
  flex: none;
}
.faq details[open] summary::after { transform: rotate(45deg); color: var(--red); }
.faq summary:hover { color: var(--red); }
.faq__body { padding: 0 0 clamp(20px, 2.6vw, 30px); color: var(--ink-2); max-width: 68ch; }
.faq__body p { margin: 0 0 1em; }
.faq__body p:last-child { margin-bottom: 0; }

/* 招新海报墙 */
.posters { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(14px, 2vw, 24px); }
.posters img {
  width: 100%; border-radius: 3px; box-shadow: var(--sh-1);
  transition: transform .6s var(--ease-out), box-shadow .6s;
}
.posters img:hover { transform: translateY(-6px) scale(1.012); box-shadow: var(--sh-2); }
@media (max-width: 720px) { .posters { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* 吉祥物旁白 */
.mascot-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(18px, 3vw, 38px);
  align-items: center;
}
.mascot-row img { width: clamp(96px, 13vw, 156px); }
.bubble {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(18px, 2.4vw, 26px) clamp(20px, 2.6vw, 30px);
  font-size: .9rem;
  line-height: 1.9;
  color: var(--ink-2);
  box-shadow: var(--sh-1);
}
.bubble::before {
  content: "";
  position: absolute;
  left: -7px; top: 50%;
  width: 12px; height: 12px;
  background: var(--card);
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transform: translateY(-50%) rotate(45deg);
}
@media (max-width: 560px) {
  .mascot-row { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .bubble::before { display: none; }
}

/* ==========================================================================
   22. 首页沉浸式导航（覆盖在深色 Hero 上时反白）
   ========================================================================== */
body.has-hero .nav:not(.is-stuck) { color: #fff; }
body.has-hero .nav:not(.is-stuck) .nav__link { color: rgba(255, 255, 255, .8); }
body.has-hero .nav:not(.is-stuck) .nav__link:hover,
body.has-hero .nav:not(.is-stuck) .nav__link.is-active { color: #fff; }
body.has-hero .nav:not(.is-stuck) .nav__brand-txt { color: #fff; }
body.has-hero .nav:not(.is-stuck) .nav__brand-txt small { color: rgba(255, 255, 255, .62); }
body.has-hero .nav:not(.is-stuck) .nav__cta { border-color: rgba(255, 255, 255, .44); color: #fff; }
body.has-hero .nav:not(.is-stuck) .nav__cta:hover { background: #fff; color: var(--ink); border-color: #fff; }
body.has-hero .nav:not(.is-stuck) .nav__burger { border-color: rgba(255, 255, 255, .44); }
body.has-hero .nav:not(.is-stuck) .nav__burger i { background: #fff; }
body.has-hero .nav:not(.is-stuck) .nav__link::after { background: var(--gold-soft); }
body.has-hero .nav:not(.is-stuck) .nav__brand img { filter: drop-shadow(0 1px 6px rgba(0, 0, 0, .5)); }

/* ==========================================================================
   23. 响应式收尾
   ========================================================================== */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__burger { display: block; }
  .foot__grid { grid-template-columns: 1fr 1fr; }
  .foot__grid > :first-child { grid-column: 1 / -1; }
  .section-head { grid-template-columns: 1fr; }
  .section-head__no { font-size: clamp(2.4rem, 13vw, 4rem); }
  .kv { grid-template-columns: 1fr; gap: 6px; }
}
@media (max-width: 560px) {
  body { font-size: 15.5px; }
  .foot__grid { grid-template-columns: 1fr; }
  .lb__nav { width: 44px; height: 44px; }
}