/* ==========================================================================
   摄影人生官网 · 共享样式
   设计语言：深色全屏影像 + 琥珀强调色 + 摄影工作台质感
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌与基础重置
   -------------------------------------------------------------------------- */
:root {
  --bg: #08090b;
  --bg-soft: #0b0d10;
  --panel: #101317;
  --panel-2: #15191e;
  --panel-3: #1b2026;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #f2f4f7;
  --muted: #9aa3ae;
  --dim: #6c7581;
  --accent: #f0a35e;
  --accent-bright: #ffc48a;
  --accent-soft: rgba(240, 163, 94, 0.12);
  --accent-ink: #1a1207;
  --danger: #ff7d6b;

  --font-sans: "Segoe UI", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei",
    system-ui, -apple-system, sans-serif;
  --font-mono: "Cascadia Code", "SFMono-Regular", "JetBrains Mono", Consolas,
    monospace;

  --container: 1440px;
  --gutter: clamp(20px, 4.4vw, 72px);
  --header-h: 72px;
  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

[hidden] {
  display: none !important;
}

body.no-scroll {
  overflow: hidden;
}

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

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

button {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

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

/* --------------------------------------------------------------------------
   2. 通用布局与工具类
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(72px, 9vw, 148px);
}

.section--tight {
  padding-block: clamp(56px, 6vw, 96px);
}

.section--flush-top {
  padding-top: 0;
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 13px;
  font-weight: 600;
  transform: translateY(-160%);
  transition: transform 0.25s var(--ease);
}

.skip-link:focus {
  transform: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}

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

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

.display {
  font-size: clamp(2.75rem, 6.4vw, 5.8rem);
  line-height: 1.08;
  font-weight: 300;
  letter-spacing: 0.01em;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.2;
  font-weight: 300;
  letter-spacing: 0.01em;
}

.section-head {
  max-width: 900px;
  margin-bottom: clamp(36px, 5vw, 64px);
}

.section-head .section-title {
  margin-top: 18px;
}

.section-head--split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  max-width: none;
}

.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex: 0 0 auto;
}

.lede {
  margin-top: 20px;
  max-width: 62ch;
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  line-height: 1.85;
  color: var(--muted);
}

.muted {
  color: var(--muted);
}

.dim {
  color: var(--dim);
}

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

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 6px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.link-arrow::after {
  content: "→";
  color: var(--accent);
  transition: transform 0.25s var(--ease);
}

.link-arrow:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   3. 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.25s var(--ease), color 0.25s var(--ease),
    border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn--primary:hover {
  background: var(--accent-bright);
}

.btn--ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.btn--ghost:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.07);
}

.btn--on-image {
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
  background: rgba(8, 9, 11, 0.18);
  backdrop-filter: blur(6px);
}

.btn--on-image:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: #fff;
}

.btn--sm {
  min-height: 38px;
  padding: 0 18px;
  font-size: 12px;
}

.btn--lg {
  min-height: 54px;
  padding: 0 34px;
  font-size: 15px;
}

.btn--block {
  display: flex;
  width: 100%;
}

.btn__hint {
  font-family: var(--font-mono);
  font-size: 10px;
  opacity: 0.65;
}

/* --------------------------------------------------------------------------
   4. 顶部导航
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, rgba(8, 9, 11, 0.72) 0%, rgba(8, 9, 11, 0) 100%);
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease),
    backdrop-filter 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled,
.site-header--solid {
  background: rgba(8, 9, 11, 0.88);
  border-bottom-color: var(--line);
  backdrop-filter: blur(14px);
}

.site-header__inner {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand__mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.16),
    0 8px 22px rgba(0, 0, 0, 0.35);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand__sub {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--dim);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  margin-left: auto;
}

.site-nav__link {
  position: relative;
  padding: 6px 0;
  font-size: 13px;
  color: rgba(242, 244, 247, 0.74);
  transition: color 0.25s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

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

.site-nav__link.is-active::after,
.site-nav__link:hover::after {
  transform: scaleX(1);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 8px;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  position: absolute;
  left: 12px;
  right: 12px;
  height: 1px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle span:nth-child(1) {
  top: 16px;
}

.nav-toggle span:nth-child(2) {
  top: 24px;
}

body.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

body.nav-open .nav-toggle span:nth-child(2) {
  transform: translateY(-4px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   5. 首页 Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
}

.hero__media,
.hero__scrim {
  position: absolute;
  inset: 0;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
  animation: heroDrift 28s var(--ease) forwards;
}

@keyframes heroDrift {
  from {
    transform: scale(1.04) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.12) translate3d(0, -1.4%, 0);
  }
}

.hero__scrim {
  background:
    linear-gradient(90deg, rgba(6, 7, 9, 0.9) 0%, rgba(6, 7, 9, 0.58) 42%, rgba(6, 7, 9, 0.08) 78%),
    linear-gradient(0deg, var(--bg) 0%, rgba(8, 9, 11, 0.55) 26%, rgba(8, 9, 11, 0) 62%),
    linear-gradient(180deg, rgba(8, 9, 11, 0.55) 0%, rgba(8, 9, 11, 0) 24%);
}

.hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: calc(var(--header-h) + 40px) var(--gutter) clamp(72px, 10vh, 126px);
}

.hero__title {
  margin-top: 24px;
  max-width: 15ch;
}

.hero__line {
  display: block;
}

.hero__sub {
  margin-top: 28px;
  max-width: 54ch;
  font-size: clamp(1rem, 1.35vw, 1.2rem);
  line-height: 1.85;
  color: rgba(242, 244, 247, 0.8);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.hero__specs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin-top: 52px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(242, 244, 247, 0.62);
}

.hero__spec {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 18px;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
}

.hero__spec:first-child {
  padding-left: 0;
  border-left: 0;
}

.hero__spec b {
  color: var(--accent);
  font-weight: 500;
}

.hero__scroll {
  position: absolute;
  right: clamp(20px, 4vw, 56px);
  bottom: 40px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.28em;
  color: rgba(242, 244, 247, 0.55);
  writing-mode: vertical-rl;
}

.hero__scroll::after {
  content: "";
  width: 1px;
  height: 56px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), transparent);
  animation: scrollPulse 2.4s var(--ease) infinite;
}

@keyframes scrollPulse {
  0%,
  100% {
    opacity: 0.25;
    transform: scaleY(0.6);
    transform-origin: top;
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
    transform-origin: top;
  }
}

/* --------------------------------------------------------------------------
   6. 子页面 Hero
   -------------------------------------------------------------------------- */
.page-hero {
  position: relative;
  min-height: 64vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
  padding-top: var(--header-h);
}

.page-hero--short {
  min-height: 52vh;
}

.page-hero__media,
.page-hero__scrim {
  position: absolute;
  inset: 0;
}

.page-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 45%;
}

.page-hero__scrim {
  background:
    linear-gradient(90deg, rgba(6, 7, 9, 0.9) 0%, rgba(6, 7, 9, 0.5) 55%, rgba(6, 7, 9, 0.22) 100%),
    linear-gradient(0deg, var(--bg) 2%, rgba(8, 9, 11, 0.3) 45%, rgba(8, 9, 11, 0.55) 100%);
}

.page-hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding: 80px var(--gutter) clamp(56px, 8vh, 96px);
}

.page-hero__title {
  margin-top: 20px;
  max-width: 18ch;
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  line-height: 1.12;
  font-weight: 300;
}

.page-hero__sub {
  margin-top: 24px;
  max-width: 60ch;
  color: rgba(242, 244, 247, 0.78);
  font-size: 1rem;
  line-height: 1.85;
}

.page-hero__eyebrow {
  margin-top: 22px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb span {
  opacity: 0.45;
}

/* --------------------------------------------------------------------------
   7. 宣言与数据
   -------------------------------------------------------------------------- */
.manifesto {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}

.manifesto__lead {
  font-size: clamp(1.45rem, 2.5vw, 2.1rem);
  line-height: 1.55;
  font-weight: 300;
  letter-spacing: 0.01em;
}

.manifesto__body {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.9;
}

.manifesto__body p + p {
  margin-top: 18px;
}

.manifesto__body strong {
  color: var(--text);
  font-weight: 500;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: clamp(56px, 7vw, 96px);
  border-top: 1px solid var(--line);
}

.stat {
  padding: 30px 28px 0 0;
}

.stat + .stat {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.stat__value {
  font-size: clamp(2.4rem, 4.4vw, 4rem);
  line-height: 1;
  font-weight: 300;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stat__value em {
  font-style: normal;
  font-size: 0.42em;
  color: var(--accent);
  margin-left: 4px;
}

.stat__label {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text);
}

.stat__note {
  margin-top: 4px;
  font-size: 12px;
  color: var(--dim);
}

/* --------------------------------------------------------------------------
   8. 功能叙事
   -------------------------------------------------------------------------- */
.feature {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: clamp(32px, 6vw, 92px);
  align-items: center;
}

.feature + .feature {
  margin-top: clamp(80px, 10vw, 160px);
}

.feature--reverse .feature__copy {
  order: 2;
}

.feature--reverse .feature__media {
  order: 1;
}

.feature__index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.feature__title {
  margin-top: 16px;
  font-size: clamp(1.9rem, 3.5vw, 3.2rem);
  line-height: 1.22;
  font-weight: 300;
  letter-spacing: 0.01em;
}

.feature__text {
  margin-top: 22px;
  max-width: 48ch;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.9;
}

.feature__list {
  margin-top: 30px;
  display: grid;
  gap: 14px;
}

.feature__list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: rgba(242, 244, 247, 0.82);
  line-height: 1.7;
}

.feature__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--accent);
}

.feature__media {
  position: relative;
  min-width: 0;
}

.feature__more {
  margin-top: 28px;
}

.feature__caption {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--dim);
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   9. 应用窗口 Mockup
   -------------------------------------------------------------------------- */
.app-window {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: 0 50px 90px -40px rgba(0, 0, 0, 0.85),
    0 0 0 1px rgba(255, 255, 255, 0.02) inset;
}

.app-window__bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.app-window__dots {
  display: flex;
  gap: 6px;
}

.app-window__dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
}

.app-window__title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--dim);
}

.app-window__tag {
  margin-left: auto;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 10px;
  color: var(--muted);
}

.app-window__body {
  padding: clamp(16px, 2.4vw, 26px);
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.panel-kicker {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--dim);
}

.panel-value {
  margin-top: 6px;
  font-size: clamp(1.8rem, 2.6vw, 2.4rem);
  line-height: 1.1;
  font-weight: 300;
  font-variant-numeric: tabular-nums;
}

.panel-value span {
  font-size: 12px;
  color: var(--muted);
  margin-left: 6px;
}

.panel-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid rgba(240, 163, 94, 0.28);
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 10.5px;
  white-space: nowrap;
}

.panel-chip::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.panel-block + .panel-block {
  margin-top: 20px;
}

.panel-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 11px;
  color: var(--muted);
}

.panel-label span {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.panel-block img {
  width: 100%;
  height: auto;
}

.heat-legend {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 8px;
  font-size: 9px;
  color: var(--dim);
}

.heat-legend i {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: #1b1e24;
}

.heat-legend i:nth-child(2) {
  background: #3a2a19;
}

.heat-legend i:nth-child(3) {
  background: #6b4423;
}

.heat-legend i:nth-child(4) {
  background: #a8642f;
}

.heat-legend i:nth-child(5) {
  background: #f0a35e;
}

.panel-cols {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 18px;
  margin-top: 20px;
}

.panel-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(255, 255, 255, 0.015);
}

.focal-list {
  display: grid;
  gap: 12px;
  margin-top: 4px;
}

.focal-row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 34px;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}

.focal-row__bar {
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}

.focal-row__bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(240, 163, 94, 0.45), var(--accent));
}

.focal-row b {
  font-weight: 500;
  color: var(--text);
  text-align: right;
}

.app-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 10.5px;
  color: var(--dim);
}

.app-status__dot {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.app-status__dot::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #6bd39a;
  box-shadow: 0 0 0 3px rgba(107, 211, 154, 0.12);
}

.app-status__action {
  padding: 5px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text);
  font-size: 10px;
}

/* 人物卡片 */
.person-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.person-card {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: var(--panel-3);
  aspect-ratio: 4 / 4.6;
}

.person-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.person-card:hover img {
  transform: scale(1.04);
}

.person-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 58%;
  background: linear-gradient(0deg, rgba(5, 6, 8, 0.88), transparent);
  pointer-events: none;
}

.person-card__meta {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 10px;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 8px;
}

.person-card__name {
  font-size: 12px;
  color: #fff;
}

.person-card__count {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: rgba(255, 255, 255, 0.6);
}

.person-card__badge {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 1;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(8, 9, 11, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(6px);
  font-family: var(--font-mono);
  font-size: 8.5px;
  color: rgba(255, 255, 255, 0.82);
}

/* 选片 */
.filmstrip__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.filmstrip__title {
  font-size: 12px;
  color: var(--text);
}

.filmstrip__meta {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  color: var(--dim);
}

.filmstrip__rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.filmstrip__rail--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.filmstrip__rail--three .frame {
  aspect-ratio: 4 / 3;
}

.frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
  aspect-ratio: 4 / 5;
}

.frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.94);
  transition: transform 0.5s var(--ease), filter 0.5s var(--ease);
}

.frame:hover img {
  transform: scale(1.03);
  filter: none;
}

.frame--best {
  border-color: rgba(240, 163, 94, 0.7);
  box-shadow: 0 0 0 1px rgba(240, 163, 94, 0.25),
    0 16px 36px -18px rgba(240, 163, 94, 0.55);
}

.frame__score {
  position: absolute;
  left: 8px;
  top: 8px;
  z-index: 1;
  padding: 3px 7px;
  border-radius: 5px;
  background: rgba(8, 9, 11, 0.72);
  backdrop-filter: blur(6px);
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: #fff;
}

.frame--best .frame__score {
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}

.frame__badge {
  position: absolute;
  right: 8px;
  top: 8px;
  z-index: 1;
  padding: 3px 7px;
  border-radius: 5px;
  background: rgba(240, 163, 94, 0.92);
  color: var(--accent-ink);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.frame__check {
  position: absolute;
  right: 8px;
  bottom: 8px;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  background: rgba(8, 9, 11, 0.35);
  color: transparent;
  font-size: 10px;
}

.frame__check.is-checked {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.filmstrip__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  color: var(--dim);
}

.filmstrip__foot b {
  color: var(--accent);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   10. 水印模板展示
   -------------------------------------------------------------------------- */
.watermark {
  background:
    radial-gradient(1200px 500px at 85% 0%, rgba(240, 163, 94, 0.06), transparent 62%),
    var(--bg-soft);
  border-block: 1px solid var(--line);
}

.template-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.chip {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 11px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.015);
}

.chip--on {
  border-color: rgba(240, 163, 94, 0.4);
  color: var(--accent);
  background: var(--accent-soft);
}

.wm-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(12px, 1.6vw, 22px);
}

.wm-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.wm-card {
  min-width: 0;
}

.wm-card__canvas {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-m);
  background: var(--panel-2);
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line);
}

.wm-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}

.wm-card:hover .wm-card__img {
  transform: scale(1.035);
}

.wm-card__cap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
}

.wm-card__name {
  font-size: 13px;
  color: var(--text);
}

.wm-card__code {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--dim);
}

/* 白边模板 */
.wm-card--band .wm-card__canvas::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 23%;
  background: #f6f4ef;
}

.wm-band {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 23%;
  padding: 0 7%;
  color: #1a1c20;
}

.wm-band__title {
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(11px, 1.1vw, 15px);
  letter-spacing: 0.06em;
}

.wm-band__params {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: clamp(5.5px, 0.55vw, 7.5px);
  letter-spacing: 0.08em;
  color: #6d6a63;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 极简模板 */
.wm-minimal {
  position: absolute;
  left: 7%;
  bottom: 8%;
  z-index: 1;
  color: #fff;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.35);
}

.wm-minimal::before {
  content: "";
  display: block;
  width: 34px;
  height: 1px;
  margin-bottom: 8px;
  background: rgba(255, 255, 255, 0.8);
}

.wm-minimal__title {
  font-size: clamp(11px, 1.15vw, 15px);
  letter-spacing: 0.14em;
}

.wm-minimal__params {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: clamp(5.5px, 0.55vw, 7.5px);
  letter-spacing: 0.1em;
  opacity: 0.75;
}

/* 杂志模板 */
.wm-magazine {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  padding: 10% 7% 7%;
  background: linear-gradient(0deg, rgba(5, 6, 8, 0.86), transparent);
  color: #fff;
}

.wm-magazine__kicker {
  font-family: var(--font-mono);
  font-size: clamp(5.5px, 0.5vw, 7px);
  letter-spacing: 0.24em;
  color: var(--accent);
}

.wm-magazine__title {
  margin-top: 5px;
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(15px, 1.7vw, 24px);
  line-height: 1;
  letter-spacing: 0.04em;
}

.wm-magazine__params {
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: clamp(5px, 0.5vw, 7px);
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.6);
}

/* 拍立得模板 */
.wm-card--polaroid .wm-card__canvas {
  background: #f4f1e9;
  padding: 7% 7% 19%;
}

.wm-card--polaroid .wm-card__img {
  border-radius: 2px;
}

.wm-polaroid {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  padding: 0 8% 6%;
  text-align: center;
  color: #4a463d;
}

.wm-polaroid__title {
  font-family: Georgia, "Songti SC", serif;
  font-style: italic;
  font-size: clamp(10px, 1vw, 13px);
}

.wm-polaroid__params {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: clamp(5px, 0.48vw, 6.5px);
  letter-spacing: 0.1em;
  color: #8a8578;
}

/* --------------------------------------------------------------------------
   11. 分享浏览器 Mockup
   -------------------------------------------------------------------------- */
.share-window {
  border-radius: var(--radius-l);
  overflow: hidden;
  background: #f3f1ec;
  color: #1c1e21;
  box-shadow: 0 50px 90px -40px rgba(0, 0, 0, 0.85);
}

.share-window__bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  background: #e8e5de;
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

.share-window__dots {
  display: flex;
  gap: 5px;
}

.share-window__dots i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.16);
}

.browser-address {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.72);
  font-family: var(--font-mono);
  font-size: 9px;
  color: #6d7169;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.browser-address::before {
  content: "●";
  font-size: 6px;
  color: #5aa06f;
}

.share-body {
  padding: clamp(14px, 2vw, 22px);
}

.share-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.share-toolbar__title {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.share-toolbar__sub {
  margin-top: 2px;
  font-size: 9.5px;
  color: #83877f;
}

.share-toolbar__count {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: #6d7169;
}

.share-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.share-item {
  position: relative;
  overflow: hidden;
  border-radius: 7px;
  aspect-ratio: 1 / 1;
  background: #ddd9d1;
}

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

.share-item__dl {
  position: absolute;
  top: 6px;
  right: 6px;
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 50%;
  background: rgba(8, 9, 11, 0.42);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 10px;
  line-height: 1;
}

.share-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.share-foot__note {
  font-size: 9.5px;
  color: #83877f;
}

.share-foot__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 999px;
  background: #1c1e21;
  color: #fff;
  font-size: 10px;
}

/* --------------------------------------------------------------------------
   12. 工作流
   -------------------------------------------------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
}

.step {
  padding: 26px 26px 0 0;
  border-top: 1px solid var(--line);
}

.step + .step {
  padding-left: 26px;
  border-left: 1px solid var(--line);
}

.step__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.step__title {
  margin-top: 16px;
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.step__text {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.step__meta {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

/* --------------------------------------------------------------------------
   13. 隐私
   -------------------------------------------------------------------------- */
.privacy {
  position: relative;
  overflow: hidden;
  background: var(--bg-soft);
  border-block: 1px solid var(--line);
  padding-block: clamp(72px, 9vw, 140px);
}

.privacy__ghost {
  position: absolute;
  top: -0.16em;
  right: -0.04em;
  z-index: 0;
  font-size: clamp(6rem, 17vw, 17rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.055);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}

.privacy__head {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.privacy__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(40px, 5vw, 64px);
  background: var(--line);
  border: 1px solid var(--line);
}

.privacy-item {
  padding: clamp(22px, 3vw, 34px);
  background: var(--bg-soft);
}

.privacy-item__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 500;
}

.privacy-item__title svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
}

.privacy-item__text {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}

.privacy__note {
  position: relative;
  z-index: 1;
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

/* --------------------------------------------------------------------------
   14. 规格与环境
   -------------------------------------------------------------------------- */
.specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(32px, 5vw, 72px);
}

.specs__title {
  margin-bottom: 18px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--dim);
  font-family: var(--font-mono);
  text-transform: uppercase;
}

.spec-row {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
}

.spec-row:last-child {
  border-bottom: 1px solid var(--line);
}

.spec-row__key {
  color: var(--dim);
}

.spec-row__val {
  color: var(--text);
  line-height: 1.7;
}

.format-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   15. 结尾 CTA
   -------------------------------------------------------------------------- */
.cta {
  position: relative;
  min-height: 76vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  text-align: center;
}

.cta__media,
.cta__scrim {
  position: absolute;
  inset: 0;
}

.cta__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 55%;
}

.cta__scrim {
  background:
    radial-gradient(700px 400px at 50% 60%, rgba(8, 9, 11, 0.28), rgba(8, 9, 11, 0.78) 72%),
    linear-gradient(0deg, var(--bg) 0%, rgba(8, 9, 11, 0.35) 40%, rgba(8, 9, 11, 0.65) 100%);
}

.cta__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 880px;
  margin-inline: auto;
  padding: clamp(80px, 12vw, 150px) var(--gutter);
}

.cta__title {
  margin-top: 20px;
  font-size: clamp(2.2rem, 4.8vw, 4.2rem);
  line-height: 1.15;
  font-weight: 300;
}

.cta__text {
  margin: 22px auto 0;
  max-width: 52ch;
  color: rgba(242, 244, 247, 0.78);
  font-size: 1rem;
  line-height: 1.85;
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 34px;
}

.cta__meta {
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: rgba(242, 244, 247, 0.5);
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   16. 页脚
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: clamp(48px, 6vw, 80px) 0 28px;
  background: var(--bg);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 64px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.footer-brand__text {
  max-width: 34ch;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--dim);
}

.footer-col__title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}

.footer-col ul {
  display: grid;
  gap: 11px;
}

.footer-col a {
  font-size: 13px;
  color: var(--muted);
  transition: color 0.2s var(--ease);
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-meta {
  display: grid;
  gap: 11px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--dim);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: clamp(36px, 5vw, 64px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  color: var(--dim);
}

.footer-bottom a {
  color: var(--dim);
  border-bottom: 1px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.footer-bottom a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* --------------------------------------------------------------------------
   17. 功能页
   -------------------------------------------------------------------------- */
.subnav {
  position: sticky;
  top: var(--header-h);
  z-index: 60;
  background: rgba(8, 9, 11, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.subnav__inner {
  display: flex;
  gap: 30px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.subnav__link {
  position: relative;
  flex: 0 0 auto;
  padding: 16px 0;
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}

.subnav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.28s var(--ease);
}

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

.subnav__link.is-active::after {
  transform: scaleX(1);
}

.detail {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
  padding-block: clamp(56px, 7vw, 104px);
  border-top: 1px solid var(--line);
}

.detail:first-of-type {
  border-top: 0;
}

.detail--reverse .detail__copy {
  order: 2;
}

.detail--reverse .detail__media {
  order: 1;
}

.detail__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.detail__kicker svg {
  width: 18px;
  height: 18px;
}

.detail__title {
  margin-top: 16px;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  line-height: 1.25;
  font-weight: 300;
}

.detail__text {
  margin-top: 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.detail__list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.detail__list li {
  position: relative;
  padding-left: 22px;
  font-size: 13.5px;
  color: rgba(242, 244, 247, 0.82);
  line-height: 1.75;
}

.detail__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 10px;
  height: 1px;
  background: var(--accent);
}

.detail__specs {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 24px;
}

.detail__media {
  min-width: 0;
}

.detail__frame {
  padding: clamp(14px, 2vw, 22px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--panel);
}

.detail__frame + .detail__frame {
  margin-top: 12px;
}

/* EXIF 信息面板 */
.exif-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
}

.exif-thumb {
  overflow: hidden;
  border-radius: 10px;
  aspect-ratio: 4 / 5;
  background: var(--panel-3);
}

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

.exif-info {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.exif-head {
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  color: var(--muted);
}

.exif-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--dim);
}

.exif-row b {
  font-weight: 400;
  color: var(--text);
}

.histogram {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 46px;
  margin-top: 12px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.02);
}

.histogram i {
  flex: 1;
  border-radius: 1px 1px 0 0;
  background: linear-gradient(0deg, rgba(240, 163, 94, 0.25), rgba(240, 163, 94, 0.9));
}

.histogram-label {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

/* 数据面板 */
.data-panel {
  padding: 4px 0;
}

.data-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.data-row:last-child {
  border-bottom: 0;
}

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

.data-row span {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--dim);
}

.data-panel__head {
  display: flex;
  align-items: center;
  gap: 9px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  color: var(--dim);
}

.data-panel__head svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

/* 能力网格 */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.capability {
  padding: 28px 26px 30px 0;
  border-bottom: 1px solid var(--line);
}

.capability:not(:nth-child(3n + 1)) {
  padding-left: 26px;
  border-left: 1px solid var(--line);
}

.capability__title {
  font-size: 15px;
  font-weight: 500;
}

.capability__text {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
}

.capability__tag {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.tech-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.tech-strip__label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: var(--dim);
  text-transform: uppercase;
}

.tech-strip__note {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--dim);
}

/* --------------------------------------------------------------------------
   18. 使用指南
   -------------------------------------------------------------------------- */
.guide-steps {
  display: grid;
  gap: 0;
}

.guide-step {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) minmax(0, 0.8fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: start;
  padding-block: clamp(30px, 4vw, 48px);
  border-top: 1px solid var(--line);
}

.guide-step:last-child {
  border-bottom: 1px solid var(--line);
}

.guide-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.guide-step__title {
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  font-weight: 400;
  line-height: 1.35;
}

.guide-step__text {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

.guide-step__aside {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--panel);
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}

.guide-step__aside b {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 500;
}

.table-wrap {
  overflow-x: auto;
  border-top: 1px solid var(--line);
}

.shortcut-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 13px;
}

.shortcut-table th {
  padding: 12px 16px 12px 0;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  font-weight: 500;
  border-bottom: 1px solid var(--line);
}

.shortcut-table td {
  padding: 15px 16px 15px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  vertical-align: middle;
}

.shortcut-table td:first-child {
  color: var(--text);
  width: 42%;
}

.kbd {
  display: inline-block;
  min-width: 24px;
  padding: 3px 7px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text);
  text-align: center;
}

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

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

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  color: var(--text);
  transition: color 0.2s var(--ease);
}

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

.faq summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 300;
  color: var(--accent);
  transition: transform 0.25s var(--ease);
}

.faq details[open] summary::after {
  transform: rotate(45deg);
}

.faq summary:hover {
  color: var(--accent);
}

.faq__answer {
  max-width: 74ch;
  padding: 0 0 24px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--muted);
}

.faq__answer p + p {
  margin-top: 10px;
}

.faq__answer a {
  color: var(--accent);
  border-bottom: 1px solid rgba(240, 163, 94, 0.35);
}

/* --------------------------------------------------------------------------
   19. 下载页
   -------------------------------------------------------------------------- */
.download-hero {
  padding-top: calc(var(--header-h) + 40px);
  padding-bottom: clamp(48px, 6vw, 80px);
  background:
    radial-gradient(1000px 460px at 78% -10%, rgba(240, 163, 94, 0.1), transparent 60%),
    var(--bg);
}

.download-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
  margin-top: 34px;
}

.download-hero__title {
  margin-top: 18px;
  font-size: clamp(2.4rem, 4.8vw, 4.2rem);
  line-height: 1.14;
  font-weight: 300;
}

.download-hero__sub {
  margin-top: 20px;
  max-width: 48ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.download-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.download-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--dim);
  text-transform: uppercase;
}

.release-panel {
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    radial-gradient(500px 260px at 100% 0%, rgba(240, 163, 94, 0.08), transparent 65%),
    var(--panel);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.8);
}

.release-panel__top {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.release-panel__logo {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14),
    0 10px 26px rgba(0, 0, 0, 0.35);
}

.release-panel__name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.release-panel__ver {
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--dim);
}

.release-panel__latest {
  margin-left: auto;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
}

.release-panel__rows {
  padding: 6px 0 2px;
}

.release-panel__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.release-panel__row b {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 400;
  color: var(--text);
  text-align: right;
}

.release-panel .btn {
  margin-top: 20px;
}

.release-panel__note {
  margin-top: 12px;
  font-size: 10.5px;
  color: var(--dim);
  text-align: center;
}

.release-panel__qr {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(255, 255, 255, 0.02);
}

.release-panel__qr-img {
  flex: 0 0 auto;
  width: 112px;
  height: 112px;
  padding: 6px;
  border-radius: 8px;
  background: #fff;
}

.release-panel__qr-title {
  font-size: 12.5px;
  color: var(--text);
}

.release-panel__qr-note {
  margin-top: 4px;
  font-size: 10.5px;
  line-height: 1.65;
  color: var(--dim);
}

.download-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 22px);
}

.download-cards--single {
  grid-template-columns: minmax(0, 640px);
}

.download-card {
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--panel);
}

.download-card--primary {
  border-color: rgba(240, 163, 94, 0.42);
  background:
    radial-gradient(500px 240px at 100% 0%, rgba(240, 163, 94, 0.08), transparent 65%),
    var(--panel);
}

.download-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.download-card__title {
  font-size: 1.15rem;
  font-weight: 500;
}

.download-card__desc {
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
}

.download-card__badge {
  flex: 0 0 auto;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.download-card__body {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--dim);
  display: grid;
  gap: 8px;
}

.file-info__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.file-info__row b {
  font-weight: 400;
  color: var(--muted);
}

.download-card .btn {
  margin-top: 24px;
}

.download-card__note {
  margin-top: 12px;
  font-size: 10.5px;
  color: var(--dim);
  text-align: center;
}

.pan-code {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 6px 13px;
  border: 1px solid rgba(240, 163, 94, 0.3);
  border-radius: 999px;
  background: var(--accent-soft);
  font-size: 11px;
  color: var(--muted);
}

.pan-code b {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.pan-hint {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 14px;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--dim);
}

.pan-hint::before {
  content: "↗";
  color: var(--accent);
}

.notice {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  padding: 14px 16px;
  border: 1px solid rgba(240, 163, 94, 0.24);
  border-radius: var(--radius-m);
  background: rgba(240, 163, 94, 0.06);
  font-size: 12px;
  line-height: 1.75;
  color: var(--muted);
}

.notice svg {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 2px;
  color: var(--accent);
}

.install-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.install-step {
  padding: 24px 26px 0 0;
}

.install-step + .install-step {
  padding-left: 26px;
  border-left: 1px solid var(--line);
}

.install-step__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.install-step__title {
  margin-top: 12px;
  font-size: 1rem;
  font-weight: 500;
}

.install-step__text {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   20. 提示消息
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  z-index: 300;
  max-width: min(90vw, 460px);
  padding: 13px 22px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(20, 24, 29, 0.96);
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(12px);
  font-size: 12.5px;
  color: var(--text);
  text-align: center;
  transform: translate(-50%, 12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* --------------------------------------------------------------------------
   21. 进入动画（默认可见，JS 就绪后才隐藏，保证失败可降级）
   -------------------------------------------------------------------------- */
.reveal-ready {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}

.reveal-ready.is-visible {
  opacity: 1;
  transform: none;
}

.reveal-ready[data-reveal-delay="1"] {
  transition-delay: 0.08s;
}

.reveal-ready[data-reveal-delay="2"] {
  transition-delay: 0.16s;
}

.reveal-ready[data-reveal-delay="3"] {
  transition-delay: 0.24s;
}

/* --------------------------------------------------------------------------
   22. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .site-nav {
    gap: 26px;
  }

  .wm-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .wm-card__canvas {
    aspect-ratio: 4 / 4.2;
  }
}

@media (max-width: 1024px) {
  .feature,
  .detail {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }

  .feature--reverse .feature__copy,
  .feature--reverse .feature__media,
  .detail--reverse .detail__copy,
  .detail--reverse .detail__media {
    order: initial;
  }

  .feature__copy {
    max-width: 680px;
  }

  .manifesto {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .stat-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stat:nth-child(3) {
    border-left: 0;
    padding-left: 0;
  }

  .stat:nth-child(n + 3) {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .step:nth-child(3) {
    border-left: 0;
    padding-left: 0;
  }

  .step:nth-child(n + 3) {
    margin-top: 30px;
  }

  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .capability:nth-child(3n + 1) {
    padding-left: 0;
    border-left: 0;
  }

  .capability:nth-child(2n) {
    padding-left: 26px;
    border-left: 1px solid var(--line);
  }

  .download-hero__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .guide-step {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .guide-step__aside {
    grid-column: 2;
  }
}

@media (max-width: 960px) {
  .site-header {
    background: rgba(8, 9, 11, 0.88);
    backdrop-filter: blur(14px);
    border-bottom-color: var(--line);
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 99;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px var(--gutter) 32px;
    background: rgba(8, 9, 11, 0.98);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.8);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
      visibility 0.3s;
  }

  body.nav-open .site-nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav__link {
    padding: 18px 0;
    font-size: 18px;
    border-bottom: 1px solid var(--line);
  }

  .site-nav__link::after {
    display: none;
  }

  .site-header__actions {
    margin-left: auto;
  }

  .site-header__actions .btn--version {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .hero__scroll {
    display: none;
  }

  .subnav {
    top: var(--header-h);
  }

  .panel-cols {
    grid-template-columns: minmax(0, 1fr);
  }

  .specs {
    grid-template-columns: minmax(0, 1fr);
  }

  .download-cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .install-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .install-step {
    padding-right: 0;
  }

  .install-step + .install-step {
    margin-top: 24px;
    padding-top: 24px;
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .exif-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .exif-thumb {
    aspect-ratio: 16 / 10;
  }
}

@media (max-width: 720px) {
  :root {
    --header-h: 64px;
  }

  .brand__sub {
    display: none;
  }

  .hero {
    min-height: 92vh;
    min-height: 92svh;
  }

  .hero__media img {
    object-position: 62% center;
  }

  .hero__scrim {
    background:
      linear-gradient(90deg, rgba(6, 7, 9, 0.84) 0%, rgba(6, 7, 9, 0.42) 65%, rgba(6, 7, 9, 0.2) 100%),
      linear-gradient(0deg, var(--bg) 0%, rgba(8, 9, 11, 0.5) 32%, rgba(8, 9, 11, 0.15) 70%),
      linear-gradient(180deg, rgba(8, 9, 11, 0.6) 0%, rgba(8, 9, 11, 0) 30%);
  }

  .hero__title {
    max-width: 12ch;
  }

  .hero__actions .btn {
    flex: 1 1 100%;
  }

  .hero__specs {
    gap: 10px 0;
  }

  .hero__spec {
    padding: 0 12px;
    font-size: 9px;
    letter-spacing: 0.08em;
  }

  .page-hero {
    min-height: 54vh;
  }

  .stat-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .stat,
  .stat + .stat {
    padding-left: 0;
    border-left: 0;
  }

  .stat + .stat {
    margin-top: 22px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
  }

  .steps,
  .privacy__grid,
  .download-cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .step,
  .step + .step {
    padding-left: 0;
    border-left: 0;
  }

  .step + .step {
    margin-top: 26px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
  }

  .section-head--split {
    display: block;
  }

  .section-head--split .section-actions {
    margin-top: 20px;
  }

  .section-head--split .lede {
    margin-top: 16px;
  }

  .wm-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .wm-card__canvas {
    aspect-ratio: 4 / 4.4;
  }

  .wm-card__name {
    font-size: 14px;
  }

  .person-grid {
    gap: 8px;
  }

  .panel-head {
    flex-direction: column;
    gap: 10px;
  }

  .filmstrip__rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .share-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .manifesto__lead {
    font-size: 1.4rem;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .capability-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .capability,
  .capability:nth-child(2n),
  .capability:not(:nth-child(3n + 1)) {
    padding-left: 0;
    border-left: 0;
  }

  .guide-step {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .guide-step__aside {
    grid-column: 1;
  }

  .detail {
    padding-block: 48px;
  }

  .spec-row {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 12px;
    font-size: 12.5px;
  }

  .download-hero__actions .btn {
    flex: 1 1 100%;
  }

  .toast {
    bottom: 20px;
    border-radius: 14px;
  }
}

@media (max-width: 420px) {
  .brand__name {
    font-size: 13px;
  }

  .site-header__actions .btn--primary {
    display: none;
  }

  .filmstrip__rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .share-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* --------------------------------------------------------------------------
   23. 动效降级
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal-ready {
    opacity: 1;
    transform: none;
  }

  .hero__media img {
    transform: none;
  }
}