/* ==========================================================================
   漫光年 MANLIGHT — design system
   深色电影感 · 晨光与雾青 · 克制的动效
   ========================================================================== */

@font-face {
  font-family: "ML Serif";
  font-style: normal;
  font-display: swap;
  font-weight: 600;
  src: url("../fonts/ml-serif.woff2") format("woff2");
}

@font-face {
  font-family: "Onest";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url("../fonts/onest-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --ink-0: #060807;
  --ink-1: #0a0c0b;
  --ink-2: #0e110f;
  --surface: #121514;
  --surface-2: #171b19;
  --surface-3: #1d2220;

  --line: rgba(238, 236, 227, 0.09);
  --line-2: rgba(238, 236, 227, 0.16);
  --line-3: rgba(238, 236, 227, 0.28);

  --text: #f3f1ea;
  --text-2: #a9b0aa;
  --text-3: #8a938d;

  --jade: #9ec6b1;
  --jade-deep: #6f9a84;
  --sand: #e8d9b6;
  --sand-deep: #c9b489;

  --font: "Onest", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans SC", "Source Han Sans SC", system-ui, sans-serif;
  --font-latin: "Onest", "Helvetica Neue", Arial, sans-serif;
  --font-display: "ML Serif", "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", serif;

  --shell: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 18px;
  --radius-sm: 12px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);

  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--ink-1);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  font-feature-settings: "kern" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body::before {
  /* 全站极细颗粒，避免大面积纯色显得平板 */
  content: "";
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

::selection {
  background: rgba(232, 217, 182, 0.24);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--sand);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--text);
  color: var(--ink-1);
  font-size: 13px;
  transform: translateY(-160%);
  transition: transform 0.3s var(--ease);
}
.skip:focus {
  transform: none;
}

/* ---------- 布局基元 ---------- */

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

.section {
  position: relative;
  padding-block: clamp(72px, 10vw, 148px);
}

.section--tight {
  padding-block: clamp(56px, 7vw, 96px);
}

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--line);
}

/* ---------- 文字 ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--text-3);
  white-space: nowrap;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}

.eyebrow--plain::before {
  display: none;
}

.display {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.5vw, 3.05rem);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.display--xl {
  font-size: clamp(2.6rem, 7.6vw, 6.2rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

.display em {
  font-style: normal;
  color: var(--sand);
}

.lead {
  margin: 0;
  font-size: clamp(1rem, 1.15vw, 1.125rem);
  line-height: 1.9;
  color: var(--text-2);
  max-width: 54ch;
}

.small {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-3);
}

.num {
  font-family: var(--font-latin);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ---------- 按钮 ---------- */

.btn {
  --btn-bg: var(--text);
  --btn-fg: #0b0d0c;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 26px;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.4s var(--ease), background 0.3s var(--ease),
    color 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.4s var(--ease);
  will-change: transform;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px -18px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.btn:active {
  transform: translateY(0);
}

.btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.4s var(--ease);
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  border: 1px solid var(--line-2);
}

.btn--ghost:hover {
  border-color: var(--line-3);
  background: rgba(255, 255, 255, 0.03);
}

.btn--sand {
  --btn-bg: linear-gradient(180deg, #efe1bf, #d9c69a);
  --btn-fg: #1a1509;
}

.btn--sm {
  min-height: 42px;
  padding: 0 20px;
  font-size: 13.5px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.textlink {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-2);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.textlink:hover {
  color: var(--text);
  border-color: var(--line-3);
}

.textlink svg {
  width: 14px;
  height: 14px;
  transition: transform 0.4s var(--ease);
}

.textlink:hover svg {
  transform: translate(2px, -2px);
}

/* ---------- 导航 ---------- */

.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--jade), var(--sand));
  z-index: 120;
  opacity: 0.85;
}

.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background 0.5s var(--ease), backdrop-filter 0.5s var(--ease),
    border-color 0.5s var(--ease);
  border-bottom: 1px solid transparent;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 48px);
}

.nav.is-stuck {
  background: rgba(9, 11, 10, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
}

.brand__mark {
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand__cn {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.brand__en {
  font-family: var(--font-latin);
  font-size: 8.5px;
  letter-spacing: 0.34em;
  color: var(--text-3);
  margin-top: 3px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 34px);
  margin-left: auto;
}

.nav__links a {
  position: relative;
  font-size: 13.5px;
  color: var(--text-2);
  padding-block: 6px;
  transition: color 0.3s var(--ease);
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--text);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.45s var(--ease);
}

.nav__links a:hover,
.nav__links a[aria-current="page"] {
  color: var(--text);
}

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

.nav__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}

.nav__ext {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-3);
  transition: color 0.3s var(--ease);
}

.nav__ext:hover {
  color: var(--text);
}

.nav__ext svg {
  width: 12px;
  height: 12px;
}

.nav__toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  place-items: center;
}

.nav__toggle span {
  display: block;
  width: 15px;
  height: 1px;
  background: var(--text);
  position: relative;
}

.nav__toggle span::before,
.nav__toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 15px;
  height: 1px;
  background: var(--text);
  transition: transform 0.35s var(--ease), opacity 0.3s;
}

.nav__toggle span::before {
  top: -5px;
}
.nav__toggle span::after {
  top: 5px;
}

.nav.is-open .nav__toggle span {
  background: transparent;
}
.nav.is-open .nav__toggle span::before {
  transform: translateY(5px) rotate(45deg);
}
.nav.is-open .nav__toggle span::after {
  transform: translateY(-5px) rotate(-45deg);
}

/* 移动端抽屉 */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 99;
  display: grid;
  align-content: start;
  gap: 6px;
  padding: 96px clamp(20px, 6vw, 40px) 40px;
  background: rgba(8, 10, 9, 0.96);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease), visibility 0.4s;
}

.drawer.is-open {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.drawer a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 20px 2px;
  border-bottom: 1px solid var(--line);
  font-size: clamp(1.35rem, 6vw, 1.8rem);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.drawer a span {
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-3);
}

.drawer__foot {
  margin-top: 32px;
  display: grid;
  gap: 12px;
}

/* ---------- 首屏 ---------- */

.hero {
  position: relative;
  min-height: min(100svh, 900px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  isolation: isolate;
  padding-top: 120px;
}

.hero__stage {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: #070908;
}

.hero__shot {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.13) translate3d(var(--pointer-x, 0px), var(--pointer-y, 0px), 0);
  transition: opacity 1.35s var(--ease), transform 6.4s cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: opacity, transform;
}

.hero__shot.is-active {
  opacity: 1;
  transform: scale(1.035) translate3d(var(--pointer-x, 0px), var(--pointer-y, 0px), 0);
}

.hero__shot.is-active img {
  animation: hero-drift 7s cubic-bezier(0.2, 0.65, 0.25, 1) both;
}

@keyframes hero-drift {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}

.hero__shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.02);
}

.hero__shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6, 8, 7, 0.82) 0%, rgba(6, 8, 7, 0.18) 32%, rgba(6, 8, 7, 0.42) 62%, var(--ink-1) 97%),
    radial-gradient(120% 80% at 78% 18%, rgba(232, 217, 182, 0.1), transparent 55%),
    linear-gradient(90deg, rgba(6, 8, 7, 0.72), transparent 58%);
}

.hero__stage::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(115% 85% at 50% 110%, rgba(158, 198, 177, 0.08), transparent 62%);
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 0 var(--gutter) clamp(28px, 4vw, 56px);
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: clamp(20px, 3vw, 34px);
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(243, 241, 234, 0.66);
}

.hero__meta i {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
  font-style: normal;
}

.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.9rem, 8.6vw, 7rem);
  font-weight: 600;
  line-height: 1.03;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.hero__title span {
  display: block;
  overflow: hidden;
}

.hero__title b {
  display: block;
  font-weight: 600;
  transform: translateY(110%);
  opacity: 0;
  animation: rise 1.2s var(--ease) forwards;
}

.hero__title span:nth-child(2) b {
  animation-delay: 0.1s;
}
.hero__title span:nth-child(3) b {
  animation-delay: 0.2s;
}

.hero__title .fade-word {
  color: var(--sand);
}

@keyframes rise {
  to {
    transform: none;
    opacity: 1;
  }
}

.hero__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: clamp(24px, 4vw, 64px);
  margin-top: clamp(22px, 3vw, 32px);
  padding-top: clamp(22px, 3vw, 30px);
  border-top: 1px solid rgba(243, 241, 234, 0.14);
  opacity: 0;
  animation: soft-in 1.4s var(--ease) 0.45s forwards;
}

@keyframes soft-in {
  to {
    opacity: 1;
  }
}

.hero__lede {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(0.95rem, 1.15vw, 1.0625rem);
  line-height: 1.85;
  color: rgba(243, 241, 234, 0.76);
}

.hero__cta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hero__side {
  position: absolute;
  right: var(--gutter);
  bottom: clamp(28px, 4vw, 56px);
  z-index: 3;
  display: none;
}

/* 首屏镜头切换 */
.reel {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter) clamp(18px, 2.6vw, 28px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  padding-top: clamp(14px, 2vw, 20px);
}

.reel__list {
  display: flex;
  gap: clamp(10px, 2vw, 26px);
  overflow-x: auto;
  scrollbar-width: none;
}

.reel__list::-webkit-scrollbar {
  display: none;
}

.reel__item {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 32px;
  padding: 4px 2px;
  color: var(--text-3);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color 0.4s var(--ease);
}

.reel__item i {
  font-family: var(--font-latin);
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.16em;
  opacity: 0.65;
}

.reel__item::before {
  content: "";
  width: 0;
  height: 1px;
  background: var(--sand);
  transition: width 0.5s var(--ease);
}

.reel__item:hover,
.reel__item.is-active {
  color: var(--text);
}

.reel__item.is-active::before {
  width: 22px;
}

.reel__item.is-active {
  position: relative;
}

.reel__item.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -11px;
  height: 2px;
  background: linear-gradient(90deg, var(--sand), rgba(232, 217, 182, 0.12));
  transform: scaleX(0);
  transform-origin: left;
  animation: reel-progress var(--reel-duration, 5200ms) linear forwards;
}

@keyframes reel-progress {
  to { transform: scaleX(1); }
}

.reel__hint {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-latin);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-3);
  white-space: nowrap;
}

.reel__hint svg {
  width: 14px;
  height: 14px;
  animation: nudge 2.4s var(--ease) infinite;
}

@keyframes nudge {
  0%,
  100% {
    transform: translateY(-1px);
  }
  50% {
    transform: translateY(3px);
  }
}

/* ---------- 跑马灯 ---------- */

.marquee {
  position: relative;
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: var(--ink-0);
  padding-block: 18px;
  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;
  gap: 0;
  width: max-content;
  animation: slide 42s linear infinite;
}

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

.marquee__track span {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  padding-inline: 22px;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(169, 176, 170, 0.72);
  white-space: nowrap;
}

.marquee__track span::after {
  content: "◦";
  color: var(--jade);
  opacity: 0.55;
  font-size: 10px;
}

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

/* ---------- 段落标题 ---------- */

.head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: clamp(24px, 5vw, 80px);
  align-items: end;
  margin-bottom: clamp(40px, 5vw, 72px);
}

.head__index {
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--text-3);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.head__index::after {
  content: "";
  height: 1px;
  width: 36px;
  background: var(--line-2);
}

.head__aside {
  padding-bottom: 6px;
}

.head__aside .lead {
  margin-left: auto;
}

/* 滚动显现 */
.js .reveal {
  opacity: 0;
  transform: translate3d(0, 42px, 0) scale(0.985);
  filter: blur(5px);
  transition: opacity 1.15s var(--ease), transform 1.25s var(--ease), filter 1.1s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
  filter: blur(0);
}

.reveal {
  opacity: 1;
}

.reveal[data-delay="1"] {
  transition-delay: 0.08s;
}
.reveal[data-delay="2"] {
  transition-delay: 0.16s;
}
.reveal[data-delay="3"] {
  transition-delay: 0.24s;
}
.reveal[data-delay="4"] {
  transition-delay: 0.32s;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .hero__title b {
    transform: none;
    opacity: 1;
  }
  .hero__body {
    opacity: 1;
  }
}

/* ---------- 01 创作流程 · 交互步骤 ---------- */

.flow {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}

.steps {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding: 24px 8px 24px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  width: 100%;
  transition: padding 0.5s var(--ease);
}

.step__no {
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-3);
  padding-top: 5px;
  transition: color 0.4s var(--ease);
}

.step__title {
  margin: 0;
  font-size: clamp(1.05rem, 1.35vw, 1.25rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-2);
  transition: color 0.4s var(--ease);
}

.step__desc {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-3);
  max-width: 42ch;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.6s var(--ease), opacity 0.5s var(--ease),
    margin 0.6s var(--ease);
}

.step::after {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  bottom: -1px;
  width: 1px;
  background: var(--sand);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform 0.6s var(--ease);
}

.step:hover .step__title {
  color: var(--text);
}

.step.is-active {
  padding-left: 18px;
}

.step.is-active .step__no {
  color: var(--sand);
}

.step.is-active .step__title {
  color: var(--text);
}

.step.is-active .step__desc {
  max-height: 120px;
  opacity: 1;
  margin-top: 10px;
}

.step.is-active::after {
  transform: scaleY(1);
}

.step__hint {
  display: none;
}

/* 面板 */
.flow__stage {
  position: relative;
  min-height: 458px;
}

.panel {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: clamp(18px, 2.2vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.008) 46%, transparent),
    var(--surface);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) scale(0.995);
  transition: opacity 0.55s var(--ease), transform 0.7s var(--ease), visibility 0.55s;
  overflow: hidden;
}

.panel.is-active {
  opacity: 1;
  visibility: visible;
  transform: none;
  z-index: 2;
}

.panel.is-active .panel__bar,
.panel.is-active .script,
.panel.is-active .prompt,
.panel.is-active .refs,
.panel.is-active .variants,
.panel.is-active .progressbar,
.panel.is-active .queue,
.panel.is-active .filmstrip,
.panel.is-active .timeline,
.panel.is-active .beats {
  animation: panel-rise 0.75s var(--ease) both;
}

.panel.is-active .script { animation-delay: 0.08s; }
.panel.is-active .beats,
.panel.is-active .queue,
.panel.is-active .timeline { animation-delay: 0.18s; }

@keyframes panel-rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-latin);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
}

.panel__dots {
  display: flex;
  gap: 5px;
}

.panel__dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--line-3);
}

.panel__label {
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.script {
  font-size: clamp(1.05rem, 1.5vw, 1.32rem);
  line-height: 1.75;
  letter-spacing: -0.01em;
  color: var(--text);
}

.script mark {
  background: linear-gradient(180deg, transparent 62%, rgba(232, 217, 182, 0.22) 62%);
  color: var(--sand);
}

.caret {
  display: inline-block;
  width: 1px;
  height: 1.05em;
  background: var(--sand);
  vertical-align: -0.16em;
  margin-left: 3px;
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.panel__foot {
  margin-top: auto;
  padding-top: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--text-3);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 11px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 11.5px;
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.02);
}

.chip--sand {
  border-color: rgba(232, 217, 182, 0.32);
  color: var(--sand);
}

.chip--jade {
  border-color: rgba(158, 198, 177, 0.28);
  color: var(--jade);
}

.prompt {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.28);
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-2);
}

.prompt b {
  color: var(--text);
  font-weight: 500;
}

.refs {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.refs figure {
  margin: 0;
  flex: 1;
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 3;
}

.refs img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
}

.refs figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px 8px 6px;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.82);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.72));
}

.variants {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 4px;
}

.variants figure {
  margin: 0;
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
}

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

.variants figure.is-pick {
  border-color: rgba(232, 217, 182, 0.55);
  box-shadow: 0 0 0 1px rgba(232, 217, 182, 0.18);
}

.variants figure.is-pick::after {
  content: "已选用";
  position: absolute;
  top: 6px;
  right: 6px;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(232, 217, 182, 0.92);
  color: #1a1509;
  font-size: 9.5px;
  letter-spacing: 0.06em;
}

.progressbar {
  margin-top: 16px;
  height: 3px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.progressbar i {
  display: block;
  height: 100%;
  width: 78%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--jade), var(--sand));
}

/* 时间线 */
.timeline {
  display: grid;
  gap: 8px;
  margin-top: auto;
}

.tl-row {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.tl-row span {
  font-family: var(--font-latin);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--text-3);
}

.tl-bar {
  display: flex;
  gap: 3px;
  height: 34px;
}

.tl-bar i {
  display: block;
  border-radius: 6px;
  background: var(--surface-3);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.tl-bar i::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(158, 198, 177, 0.22), rgba(232, 217, 182, 0.12));
  opacity: 0.5;
}

.tl-bar i.hot::after {
  opacity: 1;
}

/* ---------- 02 素材 ---------- */

.assets-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(14px, 1.8vw, 22px);
}

.asset {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  transition: border-color 0.5s var(--ease), transform 0.6s var(--ease);
}

.asset:hover {
  border-color: var(--line-2);
  transform: translateY(-4px);
}

.asset__media {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

.asset__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 1.4s var(--ease), filter 0.6s var(--ease);
  filter: saturate(0.9) brightness(0.92);
}

.asset:hover .asset__media img {
  transform: scale(1.07);
  filter: saturate(1) brightness(1);
}

.asset__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(8, 10, 9, 0.86) 100%);
}

.asset__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  font-family: var(--font-latin);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(243, 241, 234, 0.8);
  padding: 5px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  backdrop-filter: blur(6px);
  background: rgba(0, 0, 0, 0.24);
}

.asset__cap {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  z-index: 2;
}

.asset__cap h3 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.asset__cap p {
  margin: 0;
  font-size: 12px;
  color: rgba(243, 241, 234, 0.66);
  line-height: 1.7;
}

.asset__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  font-size: 12px;
  color: var(--text-3);
  border-top: 1px solid var(--line);
}

.asset__meta b {
  font-family: var(--font-latin);
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-2);
}

/* ---------- 03 工作台 ---------- */

.bench {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 40%), var(--ink-2);
  box-shadow: 0 60px 140px -80px rgba(0, 0, 0, 1), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.bench__bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.015);
}

.bench__lights {
  display: flex;
  gap: 6px;
}

.bench__lights i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #2b302d;
}

.bench__bar p {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--text-3);
}

.bench__bar .chip {
  margin-left: auto;
  font-size: 10px;
  padding: 3px 9px;
}

.bench__body {
  display: grid;
  grid-template-columns: 196px minmax(0, 1fr) 246px;
  min-height: 468px;
}

.bench__rail {
  border-right: 1px solid var(--line);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(0, 0, 0, 0.16);
}

.bench__rail h4 {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 500;
}

.rail-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 9px;
  border-radius: 8px;
  font-size: 12.5px;
  color: var(--text-3);
  transition: background 0.3s, color 0.3s;
}

.rail-item i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.6;
}

.rail-item.is-on {
  background: rgba(255, 255, 255, 0.055);
  color: var(--text);
}

.rail-sep {
  height: 1px;
  background: var(--line);
  margin: 10px 0;
}

.bench__canvas {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 18px;
  gap: 12px;
}

.bench__canvas .frame {
  position: relative;
  flex: 1;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #0a0c0b;
}

.bench__canvas .frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bench__canvas .frame .badge {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(8, 10, 9, 0.6);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-family: var(--font-latin);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: rgba(243, 241, 234, 0.85);
}

.bench__strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.bench__strip figure {
  margin: 0;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  opacity: 0.55;
  transition: opacity 0.4s, border-color 0.4s;
}

.bench__strip figure:hover,
.bench__strip figure.is-on {
  opacity: 1;
  border-color: var(--line-3);
}

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

.bench__inspector {
  border-left: 1px solid var(--line);
  padding: 16px 15px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: rgba(0, 0, 0, 0.12);
}

.field {
  display: grid;
  gap: 7px;
}

.field > span {
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}

.field > div {
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.3);
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-2);
}

.field > div.one-line {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.field select,
.field .select {
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.3);
  font-size: 12px;
  color: var(--text-2);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.field .select i {
  font-style: normal;
  color: var(--text-3);
  font-size: 10px;
}

.bench__go {
  margin-top: auto;
  display: grid;
  gap: 8px;
}

.bench__go button {
  padding: 11px;
  border-radius: 9px;
  background: linear-gradient(180deg, #efe1bf, #d9c69a);
  color: #1a1509;
  font-size: 12.5px;
  font-weight: 600;
}

.bench__go p {
  margin: 0;
  text-align: center;
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

.bench__note {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--text-3);
  background: rgba(0, 0, 0, 0.14);
}

.bench__note i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--jade);
  box-shadow: 0 0 10px var(--jade);
}

/* 特性列表 */
.feats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 34px);
  margin-top: clamp(32px, 4vw, 52px);
}

.feat {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.feat h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.feat p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--text-3);
}

.feat__no {
  display: block;
  font-family: var(--font-latin);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--jade);
  margin-bottom: 14px;
  opacity: 0.8;
}

/* ---------- 04 智能协作 ---------- */

.collab {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.collab__shot {
  position: relative;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 50px 120px -70px #000;
}

.collab__shot img {
  width: 100%;
  display: block;
  opacity: 0.96;
  filter: saturate(0.78) hue-rotate(-6deg) contrast(1.03) brightness(0.97);
}

.collab__shot figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--text-3);
}

.collab__shot figcaption b {
  font-weight: 500;
  color: var(--text-2);
}

.checks {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.checks li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-2);
}

.checks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 10px;
  height: 10px;
  border: 1px solid rgba(158, 198, 177, 0.55);
  border-radius: 50%;
}

.checks li::after {
  content: "";
  position: absolute;
  left: 5.5px;
  top: 12px;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--jade);
}

/* ---------- 05 模型与中转站 ---------- */

.relay {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(24px, 4vw, 64px);
  padding: clamp(26px, 3.4vw, 44px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    radial-gradient(90% 130% at 88% 0%, rgba(232, 217, 182, 0.09), transparent 58%),
    radial-gradient(80% 120% at 0% 100%, rgba(158, 198, 177, 0.07), transparent 60%),
    var(--surface);
}

.relay__steps {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
  align-content: start;
}

.relay__step {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.relay__step span {
  font-family: var(--font-latin);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--sand);
  padding-top: 4px;
}

.relay__step h4 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 600;
}

.relay__step p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--text-3);
}

.relay__domain {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-latin);
  letter-spacing: 0.08em;
  color: var(--text-2);
  font-size: 13px;
}

/* ---------- 下载区块 ---------- */

.dl {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid var(--line-2);
  padding: clamp(30px, 5vw, 68px);
  background: var(--ink-0);
  isolation: isolate;
}

.dl__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.dl__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
  filter: saturate(0.72) contrast(1.02);
}

.dl__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(6, 8, 7, 0.96) 12%, rgba(6, 8, 7, 0.72) 52%, rgba(6, 8, 7, 0.9) 100%);
}

.dl__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: end;
}

.dl h2 {
  margin: 14px 0 0;
  font-size: clamp(1.9rem, 3.6vw, 3rem);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.dl p.lead {
  margin-top: 16px;
  max-width: 44ch;
}

.dl__meta {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-2);
}

.dl__meta div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-2);
  font-size: 12.5px;
  color: var(--text-3);
}

.dl__meta b {
  font-family: var(--font-latin);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text);
  font-size: 13px;
}

.dl__actions {
  margin-top: 26px;
}

.copyfield {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 8px 8px 16px;
  border: 1px dashed var(--line-3);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.24);
  font-size: 12.5px;
  color: var(--text-2);
}

.copyfield code {
  font-family: var(--font-latin);
  letter-spacing: 0.18em;
  color: var(--sand);
  font-size: 13px;
}

.copyfield button {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 11.5px;
  color: var(--text);
  transition: background 0.3s;
}

.copyfield button:hover {
  background: rgba(255, 255, 255, 0.16);
}

.copyfield button.is-done {
  background: rgba(158, 198, 177, 0.2);
  color: var(--jade);
}

/* ---------- FAQ ---------- */

.faq {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.faq__list {
  border-top: 1px solid var(--line);
}

.qa {
  border-bottom: 1px solid var(--line);
}

.qa summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 2px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(0.98rem, 1.2vw, 1.08rem);
  font-weight: 500;
  color: var(--text-2);
  transition: color 0.3s;
}

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

.qa summary:hover {
  color: var(--text);
}

.qa summary i {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  border: 1px solid var(--line-3);
  border-radius: 50%;
  transition: transform 0.45s var(--ease), border-color 0.3s;
}

.qa summary i::before,
.qa summary i::after {
  content: "";
  position: absolute;
  inset: 50% 3px auto;
  height: 1px;
  background: var(--text-3);
}

.qa summary i::after {
  transform: rotate(90deg);
  transition: transform 0.45s var(--ease);
}

.qa[open] summary {
  color: var(--text);
}

.qa[open] summary i {
  transform: rotate(180deg);
  border-color: var(--sand);
}

.qa[open] summary i::after {
  transform: rotate(0);
}

.qa__body {
  padding: 0 2px 22px;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--text-3);
  animation: qa-in 0.5s var(--ease);
}

@keyframes qa-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
}

.qa__body a {
  color: var(--text-2);
  border-bottom: 1px solid var(--line-3);
}

/* ---------- 页脚 ---------- */

.footer {
  position: relative;
  background: var(--ink-0);
  border-top: 1px solid var(--line);
  padding-top: clamp(48px, 6vw, 76px);
  overflow: hidden;
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1.75fr);
  gap: clamp(30px, 5vw, 80px);
  padding-bottom: clamp(36px, 5vw, 56px);
}

.footer__brand p {
  margin: 18px 0 0;
  max-width: 30ch;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--text-3);
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.footer__col h4 {
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 500;
}

.footer__col a,
.footer__col p {
  display: block;
  margin: 0 0 11px;
  padding-block: 3px;
  font-size: 13px;
  color: var(--text-2);
  transition: color 0.3s;
}

.footer__col a:hover {
  color: var(--text);
}

.footer__col .qq {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer__col .qq code {
  font-family: var(--font-latin);
  letter-spacing: 0.04em;
  color: var(--text);
}

.footer__word {
  font-family: var(--font-latin);
  font-weight: 600;
  font-size: clamp(3.6rem, 13vw, 11rem);
  line-height: 0.86;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(238, 236, 227, 0.09);
  user-select: none;
  padding-bottom: 10px;
  white-space: nowrap;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-block: 22px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-3);
}

.footer__bottom nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer__bottom a:hover {
  color: var(--text-2);
}

/* ---------- 通用卡片 / 内容页 ---------- */

.page-head {
  position: relative;
  padding-top: clamp(120px, 15vw, 190px);
  padding-bottom: clamp(36px, 5vw, 64px);
  overflow: hidden;
  isolation: isolate;
}

.page-head::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto;
  height: 120%;
  z-index: -1;
  background: radial-gradient(58% 60% at 22% 0%, rgba(158, 198, 177, 0.1), transparent 62%),
    radial-gradient(46% 50% at 82% 8%, rgba(232, 217, 182, 0.08), transparent 60%);
  pointer-events: none;
}

.page-head h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.6vw, 4rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.page-head .lead {
  margin-top: 18px;
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-3);
}

.crumbs a:hover {
  color: var(--text-2);
}

.crumbs span {
  opacity: 0.4;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 248px), 1fr));
  gap: 16px;
}

.card {
  padding: clamp(20px, 2.4vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.4s, transform 0.5s var(--ease);
}

.card:hover {
  border-color: var(--line-2);
  transform: translateY(-3px);
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.02rem;
  font-weight: 600;
}

.card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--text-3);
}

.card .chip {
  margin-bottom: 16px;
}

.doc {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
  padding-block: clamp(32px, 5vw, 72px);
}

.doc__toc {
  position: sticky;
  top: 104px;
  display: grid;
  gap: 4px;
  padding-top: 4px;
}

.doc__toc h4 {
  margin: 0 0 12px;
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 500;
}

.doc__toc a {
  padding: 7px 0;
  font-size: 13px;
  color: var(--text-3);
  border-left: 1px solid var(--line);
  padding-left: 14px;
  transition: color 0.3s, border-color 0.3s;
}

.doc__toc a:hover,
.doc__toc a.is-on {
  color: var(--text);
  border-color: var(--sand);
}

.doc__main {
  display: grid;
  gap: clamp(36px, 4.4vw, 56px);
  min-width: 0;
}

.block {
  scroll-margin-top: 100px;
}

.block h2 {
  margin: 0 0 16px;
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.block h2 .idx {
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--sand);
  margin-right: 12px;
  vertical-align: 2px;
}

.block p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.95;
  color: var(--text-2);
  max-width: 66ch;
}

.block p.small {
  color: var(--text-3);
}

.block ol,
.block ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  max-width: 64ch;
}

.block ol li,
.block ul li {
  position: relative;
  padding-left: 30px;
  font-size: 13.8px;
  line-height: 1.9;
  color: var(--text-2);
  counter-increment: step;
}

.block ol {
  counter-reset: step;
}

.block ol li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-latin);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--sand);
  opacity: 0.85;
}

.block ul li::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--jade);
  opacity: 0.7;
}

.note {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 2px solid rgba(232, 217, 182, 0.5);
  border-radius: 0 12px 12px 0;
  background: rgba(255, 255, 255, 0.02);
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-3);
  max-width: 66ch;
}

.kv {
  display: grid;
  border-top: 1px solid var(--line);
  max-width: 66ch;
  margin-top: 8px;
}

.kv div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-3);
}

.kv b {
  font-family: var(--font-latin);
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.02em;
}

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
  gap: 14px;
  max-width: 72ch;
}

.split > div {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.018);
}

.split h3 {
  margin: 0 0 6px;
  font-size: 13.5px;
  font-weight: 600;
}

.split p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--text-3);
}

/* ---------- 响应式 ---------- */

@media (min-width: 1180px) {
  .hero__side {
    display: block;
  }
}

@media (max-width: 1080px) {
  .bench__body {
    grid-template-columns: 168px minmax(0, 1fr);
  }
  .bench__inspector {
    display: none;
  }
  .hero__body {
    grid-template-columns: 1fr;
    gap: 22px;
  }
}

@media (max-width: 980px) {
  .nav__links {
    display: none;
  }
  .nav__toggle {
    display: grid;
  }
  .nav__actions .btn {
    display: none;
  }
  .head,
  .faq,
  .collab,
  .relay,
  .dl__grid,
  .footer__top {
    grid-template-columns: 1fr;
  }
  .head__aside .lead {
    margin-left: 0;
  }
  .flow {
    grid-template-columns: 1fr;
  }
  .flow__stage {
    min-height: 0;
    display: grid;
  }
  .panel {
    position: relative;
    inset: auto;
    display: none;
    min-height: 380px;
  }
  .panel.is-active {
    display: flex;
  }
  .assets-grid {
    grid-template-columns: 1fr 1fr;
  }
  .asset__media {
    aspect-ratio: 1 / 1;
  }
  .doc {
    grid-template-columns: 1fr;
  }
  .doc__toc {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--line);
  }
  .doc__toc h4 {
    width: 100%;
    margin-bottom: 4px;
  }
  .doc__toc a {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 12px;
  }
  .feats {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .collab__shot {
    order: -1;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 15px;
  }
  .hero {
    min-height: 92svh;
    padding-top: 100px;
  }
  .hero__title {
    letter-spacing: -0.03em;
  }
  .hero__cta .btn {
    flex: 1 1 auto;
  }
  .reel {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .reel__hint {
    display: none;
  }
  .assets-grid,
  .footer__cols {
    grid-template-columns: 1fr;
  }
  .bench__body {
    grid-template-columns: 1fr;
  }
  .bench__rail {
    display: none;
  }
  .bench__strip {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer__word {
    -webkit-text-stroke-width: 0.8px;
  }
  .copyfield {
    width: 100%;
    justify-content: space-between;
  }
}

/* ---------- 补充分节与细节 ---------- */

.band {
  background:
    radial-gradient(70% 60% at 100% 0%, rgba(158, 198, 177, 0.05), transparent 60%),
    var(--ink-2);
  border-block: 1px solid var(--line);
}

.step > span:last-child {
  display: block;
  min-width: 0;
}

.step__title {
  display: block;
}

.step__desc {
  display: block;
}

.faq__list a {
  color: var(--text-2);
}

@media (max-width: 720px) {
  .hero__meta span:nth-child(4),
  .hero__meta span:nth-child(5) {
    display: none;
  }
}

/* 生成队列与胶片条 */
.queue {
  display: grid;
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.q-row {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 10px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--text-3);
}

.q-row > span:nth-child(2) {
  color: var(--text-2);
}

.q-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-3);
}

.q-dot.ok {
  background: var(--jade);
  box-shadow: 0 0 8px rgba(158, 198, 177, 0.5);
}

.q-dot.run {
  background: var(--sand);
  animation: pulse 1.8s var(--ease) infinite;
}

.q-dot.err {
  background: #c98a7a;
}

@keyframes pulse {
  50% {
    opacity: 0.25;
  }
}

.filmstrip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 20px;
}

.filmstrip figure {
  position: relative;
  margin: 0;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 16 / 9;
}

.filmstrip img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.75;
}

.filmstrip figcaption {
  position: absolute;
  left: 6px;
  bottom: 5px;
  font-family: var(--font-latin);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: rgba(243, 241, 234, 0.8);
}

.timeline {
  margin-top: 0;
  gap: 8px;
}

.tl-bar {
  height: 38px;
}

@media (max-width: 980px) {
  .panel {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .hero__meta > *:nth-child(n + 4) {
    display: none;
  }
  .panel {
    padding: 16px;
  }
  .filmstrip {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 引言段 */
.quote {
  border-top: 1px solid var(--line);
  background: radial-gradient(60% 120% at 50% 0%, rgba(232, 217, 182, 0.05), transparent 60%);
}

.quote__in {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 32px;
}

.quote blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.4vw, 3.7rem);
  line-height: 1.32;
  letter-spacing: 0.005em;
  font-weight: 500;
  color: var(--text);
  text-wrap: balance;
}

.quote blockquote em {
  font-style: normal;
  color: var(--sand);
}

.quote figcaption {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  font-size: 12px;
  color: var(--text-3);
  padding-bottom: 10px;
  text-align: right;
}

.quote figcaption span {
  font-family: var(--font-latin);
  font-size: 10px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  opacity: 0.8;
}

@media (max-width: 720px) {
  .quote__in {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .quote figcaption {
    align-items: flex-start;
    text-align: left;
    padding-bottom: 0;
  }
}

.relay__models {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.collab__shot img {
  border-radius: 10px;
}

.collab__shot figcaption {
  padding-inline: 6px;
}

/* 说明页小示意 */
.mini {
  margin-top: 22px;
  max-width: 460px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent), var(--surface);
  overflow: hidden;
  box-shadow: 0 30px 70px -50px #000;
}

.mini__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-3);
}

.mini__dots {
  display: flex;
  gap: 4px;
}

.mini__dots i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--line-3);
}

.mini__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-3);
}

.mini__row:last-child {
  border-bottom: 0;
}

.mini__row b {
  font-family: var(--font-latin);
  font-weight: 500;
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--text-2);
}

.mini-shot {
  margin: 22px 0 0;
  max-width: 460px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}

.mini-shot img {
  width: 100%;
  display: block;
  filter: saturate(0.78) hue-rotate(-6deg) brightness(0.97);
}

.mini-shot figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--text-3);
}

.next {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: radial-gradient(70% 140% at 0% 0%, rgba(158, 198, 177, 0.06), transparent 60%), var(--surface);
}

.next h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 600;
}

.next p {
  margin: 0;
  font-size: 13px;
  color: var(--text-3);
}

/* 移动端节奏收紧 */
@media (max-width: 720px) {
  .section {
    padding-block: 60px;
  }
  .section--tight {
    padding-block: 44px;
  }
  .hero__shot img {
    object-position: 58% 58%;
  }
  .asset__media {
    aspect-ratio: 4 / 3;
  }
  .collab__shot img {
    max-height: 340px;
    object-fit: cover;
    object-position: top center;
  }
  .dl {
    padding: 26px 20px;
  }
  .relay {
    padding: 22px 18px;
  }
  .next {
    padding: 20px;
  }
  .footer__word {
    font-size: clamp(2.6rem, 15vw, 4.2rem);
  }
}

.dl h2 {
  font-family: var(--font-display);
  letter-spacing: 0.01em;
  line-height: 1.24;
}

/* 抽屉里的主按钮不受列表字号影响 */
.drawer__foot a.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 26px;
  min-height: 50px;
  border-bottom: 0;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.drawer__foot p {
  margin: 4px 2px 0;
}

.drawer__foot .small {
  color: var(--text-3);
}

/* 分镜要素 */
.beats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.beats div {
  display: grid;
  gap: 5px;
}

.beats span {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.beats b {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  line-height: 1.5;
}

@media (max-width: 560px) {
  .beats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 10px;
  }
}

/* 动态细节：进度、视差与界面微反馈 */
.hero__stage {
  perspective: 900px;
}

.hero__shot {
  transform-origin: 50% 45%;
}

.hero__shot img {
  transform: translate3d(calc(var(--pointer-x, 0px) * 0.45), calc(var(--pointer-y, 0px) * 0.45), 0);
  transition: transform 1.2s var(--ease), filter 1s var(--ease);
}

.hero__shot.is-active img {
  filter: saturate(1.04) contrast(1.04);
}

.hero__meta,
.hero__body,
.reel {
  transition: transform 0.8s var(--ease);
}

.hero__meta { transform: translate3d(calc(var(--pointer-x, 0px) * -0.15), 0, 0); }
.hero__body { transform: translate3d(calc(var(--pointer-x, 0px) * -0.08), 0, 0); }

.step.is-active::after {
  animation: step-trace 4.7s linear infinite;
}

@keyframes step-trace {
  from { transform: scaleY(0.05); }
  to { transform: scaleY(1); }
}

.progressbar i {
  animation: generate-progress 3.8s ease-in-out infinite alternate;
}

@keyframes generate-progress {
  from { width: 38%; }
  to { width: 88%; }
}

.bench__canvas .frame img {
  transition: opacity 0.35s ease, transform 1s var(--ease);
}

.bench__canvas .frame img.is-swapping {
  animation: frame-swap 0.65s var(--ease) both;
}

@keyframes frame-swap {
  from { opacity: 0.35; transform: scale(1.035); filter: blur(3px); }
  to { opacity: 1; transform: scale(1); filter: blur(0); }
}

.bench__strip figure {
  cursor: pointer;
  transform: translateY(0);
  transition: opacity 0.4s, border-color 0.4s, transform 0.4s var(--ease);
}

.bench__strip figure:hover,
.bench__strip figure:focus-visible {
  transform: translateY(-3px);
}

.asset:hover .asset__tag {
  border-color: rgba(232, 217, 182, 0.52);
  color: var(--sand);
}

.relay__step,
.card,
.feat,
.qa {
  transition: border-color 0.45s var(--ease), transform 0.45s var(--ease), background 0.45s var(--ease);
}

.relay__step:hover,
.card:hover {
  transform: translateY(-4px);
}

@media (prefers-reduced-motion: reduce) {
  .step.is-active::after,
  .progressbar i,
  .hero__shot.is-active img,
  .bench__canvas .frame img.is-swapping {
    animation: none !important;
  }
  .hero__meta,
  .hero__body,
  .reel,
  .hero__shot img {
    transform: none !important;
  }
}