/* ==========================================================================
   三国志战棋天下 · 下载落地页
   基准：html font-size: 100px（桌面），768px 以下为 50px
   尺寸换算：设计像素 ÷ 100 = rem
   ========================================================================== */

:root {
  --ink-950: #080705;
  --ink-900: #0b0906;
  --ink-800: #12100b;
  --ink-700: #1a1610;
  --ink-600: #241f16;
  --gold: #c9a227;
  --gold-light: #e9cd82;
  --gold-soft: #b89a52;
  --cinnabar: #9b2b20;
  --cinnabar-light: #c14a34;
  --text: #ece4d3;
  --text-muted: #a89d86;
  --line: rgba(201, 162, 39, 0.16);
  --line-strong: rgba(201, 162, 39, 0.38);
  --serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC", "SimSun", serif;
  --kai: "Kaiti SC", "STKaiti", "KaiTi", "Songti SC", serif;
  --shadow-gold: 0 0.1rem 0.4rem rgba(201, 162, 39, 0.22);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

body {
  margin: 0;
  background-color: var(--ink-900);
  color: var(--text);
  font-family: var(--serif);
  font-size: 0.16rem;
  line-height: 1.75;
  letter-spacing: 0.01rem;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

.skip-link {
  position: absolute;
  top: -1rem;
  left: 0.2rem;
  z-index: 200;
  padding: 0.1rem 0.2rem;
  background: var(--gold);
  color: var(--ink-900);
  font-size: 0.14rem;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 0.1rem;
}

.container {
  width: 100%;
  max-width: 12rem;
  margin: 0 auto;
  padding: 0 0.4rem;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.08rem;
  padding: 0.14rem 0.38rem;
  border: 1px solid transparent;
  border-radius: 0.04rem;
  font-size: 0.16rem;
  line-height: 1.4;
  letter-spacing: 0.03rem;
  white-space: nowrap;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background-color 0.25s var(--ease), border-color 0.25s var(--ease),
    color 0.25s var(--ease);
}

.btn-primary {
  background: linear-gradient(135deg, #e7c987 0%, var(--gold) 55%, #a9841d 100%);
  color: #170f04;
  border-color: rgba(233, 205, 130, 0.6);
  box-shadow: 0 0.08rem 0.28rem rgba(201, 162, 39, 0.28);
  font-weight: 600;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0.14rem 0.4rem rgba(201, 162, 39, 0.42);
}

.btn-ghost {
  background: rgba(233, 205, 130, 0.04);
  color: var(--gold-light);
  border-color: var(--line-strong);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
  background: rgba(233, 205, 130, 0.1);
}

.btn-sm {
  padding: 0.1rem 0.28rem;
  font-size: 0.15rem;
}

.btn-lg {
  padding: 0.17rem 0.46rem;
  font-size: 0.17rem;
}

.btn-icon {
  font-size: 0.9em;
  line-height: 1;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 0.72rem;
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, rgba(11, 9, 6, 0.92), rgba(11, 9, 6, 0.4));
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease),
    height 0.3s var(--ease);
}

.site-header.is-scrolled {
  height: 0.62rem;
  background: rgba(8, 7, 5, 0.94);
  border-bottom-color: var(--line);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.3rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.12rem;
  flex-shrink: 0;
}

.brand-seal {
  width: 0.36rem;
  height: 0.36rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--cinnabar);
  color: #f6e9c8;
  font-family: var(--kai);
  font-size: 0.2rem;
  line-height: 1;
  border-radius: 0.03rem;
  box-shadow: inset 0 0 0 1px rgba(246, 233, 200, 0.35);
}

.brand-text {
  font-size: 0.18rem;
  letter-spacing: 0.06rem;
  color: var(--gold-light);
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.36rem;
}

.nav-link {
  position: relative;
  font-size: 0.15rem;
  letter-spacing: 0.04rem;
  color: var(--text-muted);
  transition: color 0.25s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -0.08rem;
  width: 0;
  height: 1px;
  background: var(--gold);
  transform: translateX(-50%);
  transition: width 0.25s var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--gold-light);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.16rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.06rem;
  width: 0.4rem;
  height: 0.4rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 0.03rem;
}

.nav-toggle span {
  display: block;
  width: 0.2rem;
  height: 1px;
  margin: 0 auto;
  background: var(--gold-light);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(0.07rem) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-0.07rem) rotate(-45deg);
}

/* ---------- 主视觉 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 1.3rem 0 1rem;
  overflow: hidden;
  text-align: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("../assets/hero.jpg");
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  animation: heroZoom 24s ease-out forwards;
}

@keyframes heroZoom {
  to {
    transform: scale(1.14);
  }
}

.hero-veil {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 45%, rgba(11, 9, 6, 0.2) 0%, rgba(11, 9, 6, 0.72) 60%, rgba(8, 7, 5, 0.96) 100%),
    linear-gradient(180deg, rgba(8, 7, 5, 0.9) 0%, rgba(8, 7, 5, 0.45) 38%, rgba(8, 7, 5, 0.98) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-eyebrow {
  display: inline-block;
  padding: 0.06rem 0.2rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.02rem;
  font-size: 0.14rem;
  letter-spacing: 0.06rem;
  color: var(--gold-soft);
}

.hero-title {
  margin: 0.24rem 0 0.1rem;
  font-size: 0.78rem;
  line-height: 1.2;
  letter-spacing: 0.06rem;
  font-weight: 700;
  color: #f4e7c6;
  text-shadow: 0 0.04rem 0.24rem rgba(0, 0, 0, 0.8), 0 0 0.6rem rgba(201, 162, 39, 0.18);
}

.hero-sub {
  font-size: 0.26rem;
  letter-spacing: 0.04rem;
  color: var(--gold-light);
}

.hero-desc {
  max-width: 8.2rem;
  margin: 0.2rem auto 0;
  font-size: 0.17rem;
  line-height: 1.9;
  color: rgba(236, 228, 211, 0.8);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.16rem;
  margin-top: 0.4rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.3rem;
  margin-top: 0.56rem;
}

.hero-meta li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.04rem;
  padding-left: 0.3rem;
  border-left: 1px solid var(--line);
}

.hero-meta li:first-child {
  padding-left: 0;
  border-left: 0;
}

.hero-meta span {
  font-size: 0.13rem;
  letter-spacing: 0.06rem;
  color: var(--text-muted);
}

.hero-meta strong {
  font-size: 0.15rem;
  font-weight: 500;
  color: var(--gold-light);
}

.hero-disclaimer {
  margin-top: 0.24rem;
  font-size: 0.14rem;
  line-height: 1.7;
  letter-spacing: 0.02rem;
  color: rgba(168, 157, 134, 0.72);
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 0.3rem;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.08rem;
  transform: translateX(-50%);
  color: var(--text-muted);
}

.hero-scroll-line {
  width: 1px;
  height: 0.36rem;
  background: linear-gradient(180deg, transparent, var(--gold));
  animation: scrollPulse 2.2s ease-in-out infinite;
}

.hero-scroll-text {
  font-size: 0.12rem;
  letter-spacing: 0.08rem;
}

@keyframes scrollPulse {
  0%,
  100% {
    opacity: 0.2;
    transform: scaleY(0.6);
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
  }
}

/* ---------- 通用区块 ---------- */
.section {
  position: relative;
  padding: 1.2rem 0;
}

.section-head {
  max-width: 8rem;
  margin: 0 auto 0.7rem;
  text-align: center;
}

.section-label {
  font-size: 0.13rem;
  letter-spacing: 0.14rem;
  color: var(--cinnabar-light);
}

.section-title {
  margin-top: 0.1rem;
  font-size: 0.42rem;
  line-height: 1.35;
  letter-spacing: 0.04rem;
  color: #f0e3c4;
}

.section-desc {
  margin-top: 0.14rem;
  font-size: 0.16rem;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- 游戏特色 ---------- */
.features {
  background: var(--ink-800);
}

.features::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(201, 162, 39, 0.07), transparent 60%);
  pointer-events: none;
}

.feature-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.24rem;
}

.feature-card {
  padding: 0.32rem 0.28rem;
  background: linear-gradient(165deg, rgba(36, 31, 22, 0.95), rgba(18, 16, 11, 0.95));
  border: 1px solid var(--line);
  border-radius: 0.04rem;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
}

.feature-card:hover {
  transform: translateY(-0.06rem);
  border-color: var(--line-strong);
  box-shadow: 0 0.16rem 0.4rem rgba(0, 0, 0, 0.45);
}

.feature-icon {
  width: 0.52rem;
  height: 0.52rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 0.03rem;
  background: rgba(201, 162, 39, 0.06);
}

.feature-icon svg {
  width: 0.3rem;
  height: 0.3rem;
  fill: none;
  stroke: var(--gold-light);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-title {
  margin: 0.24rem 0 0.1rem;
  font-size: 0.19rem;
  line-height: 1.5;
  letter-spacing: 0.02rem;
  text-wrap: balance;
  color: #f0e3c4;
}

.feature-text {
  font-size: 0.16rem;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- 战场截图 ---------- */
.screenshots {
  background: var(--ink-950);
}

.shot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.24rem;
}

.shot-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.03rem;
  background: var(--ink-700);
}

.shot-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(8, 7, 5, 0.65));
  pointer-events: none;
}

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

.shot:hover .shot-frame img {
  transform: scale(1.06);
}

.shot:hover .shot-frame {
  border-color: var(--line-strong);
}

.shot figcaption {
  padding-top: 0.16rem;
  font-size: 0.15rem;
  letter-spacing: 0.04rem;
  text-align: center;
  color: var(--gold-soft);
}

/* ---------- 下载专区 ---------- */
.download {
  background: var(--ink-800);
}

.download::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(155, 43, 32, 0.16), transparent 55%),
    radial-gradient(circle at 85% 70%, rgba(201, 162, 39, 0.08), transparent 50%);
  pointer-events: none;
}

.download-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1.25fr 0.95fr;
  gap: 0.5rem;
  padding: 0.6rem;
  background: linear-gradient(150deg, rgba(30, 25, 17, 0.96), rgba(14, 12, 8, 0.96));
  border: 1px solid var(--line-strong);
  border-radius: 0.04rem;
  box-shadow: 0 0.24rem 0.6rem rgba(0, 0, 0, 0.5);
}

.download-main {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.download-title {
  font-size: 0.3rem;
  letter-spacing: 0.04rem;
  color: #f0e3c4;
}

.download-version {
  margin-top: 0.08rem;
  font-size: 0.15rem;
  letter-spacing: 0.03rem;
  color: var(--gold-soft);
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.16rem;
  margin: 0.3rem 0 0.2rem;
}

.download-note {
  max-width: 6.4rem;
  font-size: 0.14rem;
  line-height: 1.8;
  color: rgba(168, 157, 134, 0.8);
}

.download-specs {
  padding: 0.28rem 0.32rem;
  background: rgba(8, 7, 5, 0.45);
  border: 1px solid var(--line);
  border-radius: 0.03rem;
}

.spec-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.2rem;
  padding: 0.12rem 0;
  border-bottom: 1px dashed rgba(201, 162, 39, 0.12);
}

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

.spec-row dt {
  font-size: 0.15rem;
  color: var(--text-muted);
}

.spec-row dd {
  font-size: 0.15rem;
  text-align: right;
  color: var(--text);
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 0.6rem 0 0.4rem;
  background: var(--ink-950);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.4rem 0.6rem;
  align-items: start;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.12rem;
}

.footer-name {
  font-size: 0.18rem;
  letter-spacing: 0.04rem;
  color: var(--gold-light);
}

.footer-slogan {
  font-size: 0.13rem;
  letter-spacing: 0.08rem;
  color: var(--text-muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.28rem;
  padding-top: 0.06rem;
}

.footer-nav a {
  font-size: 0.15rem;
  color: var(--text-muted);
  transition: color 0.25s var(--ease);
}

.footer-nav a:hover {
  color: var(--gold-light);
}

.footer-legal {
  grid-column: 1 / -1;
  padding-top: 0.28rem;
  border-top: 1px solid rgba(201, 162, 39, 0.1);
  font-size: 0.14rem;
  line-height: 1.9;
  color: rgba(168, 157, 134, 0.78);
}

/* ---------- 回到顶部 ---------- */
.to-top {
  position: fixed;
  right: 0.32rem;
  bottom: 0.32rem;
  z-index: 90;
  width: 0.44rem;
  height: 0.44rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: rgba(18, 16, 11, 0.9);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--gold-light);
  font-size: 0.18rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(0.1rem);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
    visibility 0.3s var(--ease), border-color 0.3s var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  border-color: var(--gold);
}

/* ---------- 轻提示 ---------- */
#siteToast {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  z-index: 160;
  max-width: 8rem;
  padding: 0.14rem 0.32rem;
  background: rgba(8, 7, 5, 0.95);
  border: 1px solid var(--line-strong);
  border-radius: 0.04rem;
  font-size: 0.15rem;
  line-height: 1.6;
  text-align: center;
  color: var(--gold-light);
  box-shadow: 0 0.12rem 0.4rem rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 0.16rem);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
    visibility 0.3s var(--ease);
  pointer-events: none;
}

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

/* ---------- 入场动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(0.24rem);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

.feature-card:nth-child(2),
.shot:nth-child(2) {
  transition-delay: 0.1s;
}

.feature-card:nth-child(3),
.shot:nth-child(3) {
  transition-delay: 0.2s;
}

.feature-card:nth-child(4) {
  transition-delay: 0.3s;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .download-panel {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .hero-title {
    font-size: 0.66rem;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 50px;
  }

  body {
    font-size: 0.32rem;
    letter-spacing: 0.005rem;
  }

  .container {
    padding: 0 0.4rem;
    max-width: 100%;
  }

  .site-header {
    height: 1.2rem;
  }

  .site-header.is-scrolled {
    height: 1.04rem;
  }

  .brand-seal {
    width: 0.6rem;
    height: 0.6rem;
    font-size: 0.34rem;
  }

  .brand-text {
    font-size: 0.32rem;
    letter-spacing: 0.04rem;
  }

  .header-download {
    display: none;
  }

  .nav-toggle {
    display: flex;
    width: 0.72rem;
    height: 0.72rem;
    gap: 0.1rem;
  }

  .nav-toggle span {
    width: 0.32rem;
  }

  .nav-toggle.is-open span:nth-child(1) {
    transform: translateY(0.11rem) rotate(45deg);
  }

  .nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-0.11rem) rotate(-45deg);
  }

  .nav {
    position: fixed;
    top: 1.2rem;
    left: 0;
    right: 0;
    z-index: 99;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.2rem 0.4rem 0.3rem;
    background: rgba(8, 7, 5, 0.98);
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    visibility: hidden;
    transition: transform 0.35s var(--ease), visibility 0.35s var(--ease);
  }

  .nav.is-open {
    transform: none;
    visibility: visible;
  }

  .nav-link {
    padding: 0.24rem 0;
    font-size: 0.32rem;
    border-bottom: 1px solid rgba(201, 162, 39, 0.1);
  }

  .nav-link::after {
    display: none;
  }

  .btn {
    font-size: 0.3rem;
    padding: 0.22rem 0.5rem;
    gap: 0.12rem;
  }

  .btn-sm {
    padding: 0.18rem 0.36rem;
    font-size: 0.28rem;
  }

  .btn-lg {
    padding: 0.28rem 0.56rem;
    font-size: 0.32rem;
  }

  .hero {
    min-height: 92vh;
    min-height: 92svh;
    padding: 1.8rem 0 1.2rem;
  }

  .hero-bg {
    background-position: 58% center;
  }

  .hero-eyebrow {
    padding: 0.1rem 0.24rem;
    font-size: 0.24rem;
    letter-spacing: 0.06rem;
  }

  .hero-title {
    margin: 0.28rem 0 0.12rem;
    font-size: 0.68rem;
    letter-spacing: 0.03rem;
  }

  .hero-sub {
    font-size: 0.34rem;
    line-height: 1.6;
  }

  .hero-desc {
    margin-top: 0.24rem;
    font-size: 0.3rem;
    line-height: 1.85;
  }

  .hero-actions {
    flex-direction: column;
    align-self: stretch;
    gap: 0.2rem;
    margin-top: 0.48rem;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-meta {
    gap: 0.2rem 0.24rem;
    margin-top: 0.5rem;
  }

  .hero-meta li {
    padding-left: 0.24rem;
  }

  .hero-meta span {
    font-size: 0.22rem;
  }

  .hero-meta strong {
    font-size: 0.26rem;
  }

  .hero-disclaimer {
    margin-top: 0.3rem;
    font-size: 0.28rem;
  }

  .hero-scroll {
    display: none;
  }

  .section {
    padding: 1.3rem 0;
  }

  .section-head {
    margin-bottom: 0.6rem;
  }

  .section-label {
    font-size: 0.24rem;
    letter-spacing: 0.06rem;
  }

  .section-title {
    margin-top: 0.12rem;
    font-size: 0.5rem;
  }

  .section-desc {
    margin-top: 0.18rem;
    font-size: 0.3rem;
    line-height: 1.8;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .feature-card {
    padding: 0.44rem 0.4rem;
  }

  .feature-icon {
    width: 0.9rem;
    height: 0.9rem;
  }

  .feature-icon svg {
    width: 0.52rem;
    height: 0.52rem;
  }

  .feature-title {
    margin: 0.28rem 0 0.12rem;
    font-size: 0.36rem;
  }

  .feature-text {
    font-size: 0.3rem;
    line-height: 1.8;
  }

  .shot-grid {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

  .shot figcaption {
    padding-top: 0.2rem;
    font-size: 0.28rem;
  }

  .download-panel {
    padding: 0.5rem 0.4rem;
    gap: 0.44rem;
  }

  .download-title {
    font-size: 0.44rem;
  }

  .download-version {
    font-size: 0.28rem;
  }

  .download-actions {
    flex-direction: column;
    gap: 0.2rem;
    margin: 0.36rem 0 0.28rem;
  }

  .download-actions .btn {
    width: 100%;
  }

  .download-note {
    font-size: 0.26rem;
    max-width: 100%;
  }

  .download-specs {
    padding: 0.12rem 0.3rem;
  }

  .spec-row {
    padding: 0.2rem 0;
    gap: 0.2rem;
  }

  .spec-row dt,
  .spec-row dd {
    font-size: 0.28rem;
  }

  .site-footer {
    padding: 0.8rem 0 0.6rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 0.36rem;
  }

  .footer-brand .brand-seal {
    width: 0.6rem;
    height: 0.6rem;
    font-size: 0.34rem;
  }

  .footer-name {
    font-size: 0.34rem;
  }

  .footer-slogan {
    font-size: 0.24rem;
  }

  .footer-nav {
    gap: 0.4rem;
    padding-top: 0;
  }

  .footer-nav a {
    font-size: 0.28rem;
  }

  .footer-legal {
    padding-top: 0.32rem;
    font-size: 0.26rem;
  }

  .to-top {
    right: 0.4rem;
    bottom: 0.4rem;
    width: 0.8rem;
    height: 0.8rem;
    font-size: 0.34rem;
  }

  #siteToast {
    bottom: 1.6rem;
    max-width: calc(100% - 0.8rem);
    padding: 0.24rem 0.4rem;
    font-size: 0.28rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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